feat: buffer tracing logs before console init

minor format updates from copilot's commit

.pre-commit-config.yaml

@@ -20,3 +20,15 @@ repos:
         language: system
         types: [rust]
         pass_filenames: false
+      - id: cargo-check
+        name: cargo check
+        entry: cargo check --all-targets
+        language: system
+        types_or: [rust, cargo, cargo-lock]
+        pass_filenames: false
+      - id: cargo-check-wasm
+        name: cargo check for wasm32-unknown-emscripten
+        entry: cargo check --all-targets --target=wasm32-unknown-emscripten
+        language: system
+        types_or: [rust, cargo, cargo-lock]
+        pass_filenames: false

Cargo.lock

@@ -252,6 +252,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "circular-buffer"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23bdce1da528cadbac4654b5632bfcd8c6c63e25b1d42cea919a95958790b51d"
+
 [[package]]
 name = "concurrent-queue"
 version = "2.5.0"
@@ -316,6 +322,12 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "diff"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
+
 [[package]]
 name = "disqualified"
 version = "1.0.0"
@@ -528,6 +540,12 @@ version = "2.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
 
+[[package]]
+name = "micromap"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18c087666f377f857b49564f8791b481260c67825d6b337e1e38ddf54a985a88"
+
 [[package]]
 name = "nonmax"
 version = "0.5.5"
@@ -553,6 +571,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "num-width"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "faede9396d7883a8c9c989e0b53c984bf770defb5cb8ed6c345b4c0566cf32b9"
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -571,13 +595,17 @@ version = "0.2.0"
 dependencies = [
  "anyhow",
  "bevy_ecs",
+ "bitflags 2.9.1",
+ "circular-buffer",
  "glam 0.30.5",
- "lazy_static",
  "libc",
- "once_cell",
+ "micromap",
+ "num-width",
+ "parking_lot",
  "pathfinding",
  "phf",
- "rand 0.9.2",
+ "pretty_assertions",
+ "rand",
  "sdl2",
  "serde",
  "serde_json",
@@ -586,6 +614,7 @@ dependencies = [
  "strum",
  "strum_macros",
  "thiserror",
+ "thousands",
  "tracing",
  "tracing-error",
  "tracing-subscriber",
@@ -637,29 +666,30 @@ dependencies = [
 
 [[package]]
 name = "phf"
-version = "0.11.3"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+checksum = "913273894cec178f401a31ec4b656318d95473527be05c0752cc41cdc32be8b7"
 dependencies = [
  "phf_macros",
  "phf_shared",
+ "serde",
 ]
 
 [[package]]
 name = "phf_generator"
-version = "0.11.3"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+checksum = "2cbb1126afed61dd6368748dae63b1ee7dc480191c6262a3b4ff1e29d86a6c5b"
 dependencies = [
+ "fastrand",
  "phf_shared",
- "rand 0.8.5",
 ]
 
 [[package]]
 name = "phf_macros"
-version = "0.11.3"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f84ac04429c13a7ff43785d75ad27569f2951ce0ffd30a3321230db2fc727216"
+checksum = "d713258393a82f091ead52047ca779d37e5766226d009de21696c4e667044368"
 dependencies = [
  "phf_generator",
  "phf_shared",
@@ -670,9 +700,9 @@ dependencies = [
 
 [[package]]
 name = "phf_shared"
-version = "0.11.3"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+checksum = "06005508882fb681fd97892ecff4b7fd0fee13ef1aa569f8695dae7ab9099981"
 dependencies = [
  "siphasher",
 ]
@@ -698,6 +728,16 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "pretty_assertions"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ae130e2f271fbc2ac3a40fb1d07180839cdbbe443c7a27e1e3c13c5cac0116d"
+dependencies = [
+ "diff",
+ "yansi",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.95"
@@ -722,30 +762,15 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
-[[package]]
-name = "rand"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
-dependencies = [
- "rand_core 0.6.4",
-]
-
 [[package]]
 name = "rand"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
- "rand_core 0.9.3",
+ "rand_core",
 ]
 
-[[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-
 [[package]]
 name = "rand_core"
 version = "0.9.3"
@@ -986,24 +1011,30 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.12"
+version = "2.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
+checksum = "0b0949c3a6c842cbde3f1686d6eea5a010516deb7085f79db747562d4102f41e"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.12"
+version = "2.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
+checksum = "cc5b44b4ab9c2fdd0e0512e6bece8388e214c0749f5862b114cc5b7a25daf227"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
+[[package]]
+name = "thousands"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3bf63baf9f5039dadc247375c29eb13706706cfde997d0330d05aa63a77d8820"
+
 [[package]]
 name = "thread_local"
 version = "1.1.7"
@@ -1427,3 +1458,9 @@ checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
 dependencies = [
  "bitflags 2.9.1",
 ]
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"

Cargo.toml

@@ -6,25 +6,29 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tracing = { version = "0.1.40", features = ["max_level_debug", "release_max_level_debug"]}
+tracing = { version = "0.1.41", features = ["max_level_debug", "release_max_level_debug"]}
 tracing-error = "0.2.0"
 tracing-subscriber = {version = "0.3.17", features = ["env-filter"]}
-lazy_static = "1.5.0"
 sdl2 = { version = "0.38.0", features = ["image", "ttf"] }
 spin_sleep = "1.3.2"
 rand = { version = "0.9.2", default-features = false, features = ["small_rng", "os_rng"] }
 pathfinding = "4.14"
-once_cell = "1.21.3"
-thiserror = "2.0"
+thiserror = "2.0.14"
 anyhow = "1.0"
-glam = { version = "0.30.5", features = [] }
-serde = { version = "1.0.219", features = ["derive"] }
+glam = "0.30.5"
 serde_json = "1.0.142"
 smallvec = "1.15.1"
 strum = "0.27.2"
 strum_macros = "0.27.2"
-phf = { version = "0.11", features = ["macros"] }
+phf = { version = "0.12.1", features = ["macros"] }
 bevy_ecs = "0.16.1"
+bitflags = "2.9.1"
+parking_lot = "0.12.3"
+micromap = "0.1.0"
+thousands = "0.2.0"
+pretty_assertions = "1.4.1"
+num-width = "0.1.0"
+circular-buffer = "1.1.0"
 
 [profile.release]
 lto = true
@@ -63,4 +67,7 @@ libc = "0.2.175"
 [build-dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-phf = { version = "0.11", features = ["macros"] }
+phf = { version = "0.12.1", features = ["macros"] }
+
+[package.metadata.cargo-machete]
+ignored = ["phf"]

build.rs

@@ -19,6 +19,15 @@ struct MapperFrame {
     height: u16,
 }
 
+impl MapperFrame {
+    fn to_u16vec2_format(self) -> String {
+        format!(
+            "MapperFrame {{ pos: glam::U16Vec2::new({}, {}), size: glam::U16Vec2::new({}, {}) }}",
+            self.x, self.y, self.width, self.height
+        )
+    }
+}
+
 fn main() {
     let path = Path::new(&env::var("OUT_DIR").unwrap()).join("atlas_data.rs");
     let mut file = BufWriter::new(File::create(&path).unwrap());
@@ -37,12 +46,7 @@ fn main() {
     .unwrap();
 
     for (name, frame) in atlas_mapper.frames {
-        writeln!(
-            &mut file,
-            "    \"{}\" => MapperFrame {{ x: {}, y: {}, width: {}, height: {} }},",
-            name, frame.x, frame.y, frame.width, frame.height
-        )
-        .unwrap();
+        writeln!(&mut file, "    \"{}\" => {},", name, frame.to_u16vec2_format()).unwrap();
     }
 
     writeln!(&mut file, "}};").unwrap();

src/app.rs

@@ -1,11 +1,9 @@
 use std::time::{Duration, Instant};
 
-use glam::Vec2;
-use sdl2::render::{Canvas, ScaleMode, Texture, TextureCreator};
+use sdl2::render::TextureCreator;
 use sdl2::ttf::Sdl2TtfContext;
-use sdl2::video::{Window, WindowContext};
+use sdl2::video::WindowContext;
 use sdl2::{AudioSubsystem, EventPump, Sdl, VideoSubsystem};
-use tracing::{error, warn};
 
 use crate::error::{GameError, GameResult};
 
@@ -13,14 +11,28 @@ use crate::constants::{CANVAS_SIZE, LOOP_TIME, SCALE};
 use crate::game::Game;
 use crate::platform::get_platform;
 
+/// Main application wrapper that manages SDL initialization, window lifecycle, and the game loop.
+///
+/// Handles platform-specific setup, maintains consistent frame timing, and delegates
+/// game logic to the contained `Game` instance. The app manages focus state to
+/// optimize CPU usage when the window loses focus.
 pub struct App {
     pub game: Game,
     last_tick: Instant,
     focused: bool,
-    cursor_pos: Vec2,
 }
 
 impl App {
+    /// Initializes SDL subsystems, creates the game window, and sets up the game state.
+    ///
+    /// Performs comprehensive initialization including video/audio subsystems,
+    /// window creation with proper scaling, and canvas configuration. All SDL
+    /// resources are leaked to maintain 'static lifetimes required by the game architecture.
+    ///
+    /// # Errors
+    ///
+    /// Returns `GameError::Sdl` if any SDL initialization step fails, or propagates
+    /// errors from `Game::new()` during game state setup.
     pub fn new() -> GameResult<Self> {
         let sdl_context: &'static Sdl = Box::leak(Box::new(sdl2::init().map_err(|e| GameError::Sdl(e.to_string()))?));
         let video_subsystem: &'static VideoSubsystem =
@@ -32,9 +44,6 @@ impl App {
         let event_pump: &'static mut EventPump =
             Box::leak(Box::new(sdl_context.event_pump().map_err(|e| GameError::Sdl(e.to_string()))?));
 
-        // Initialize platform-specific console
-        get_platform().init_console()?;
-
         let window = video_subsystem
             .window(
                 "Pac-Man",
@@ -46,11 +55,10 @@ impl App {
             .build()
             .map_err(|e| GameError::Sdl(e.to_string()))?;
 
-        let mut canvas = Box::leak(Box::new(
+        let canvas = Box::leak(Box::new(
             window
                 .into_canvas()
                 .accelerated()
-                .present_vsync()
                 .build()
                 .map_err(|e| GameError::Sdl(e.to_string()))?,
         ));
@@ -64,20 +72,23 @@ impl App {
         let game = Game::new(canvas, texture_creator, event_pump)?;
         // game.audio.set_mute(cfg!(debug_assertions));
 
-        // Initial draw
-        // game.draw(&mut canvas, &mut backbuffer)
-        //     .map_err(|e| GameError::Sdl(e.to_string()))?;
-        // game.present_backbuffer(&mut canvas, &backbuffer, glam::Vec2::ZERO)
-        //     .map_err(|e| GameError::Sdl(e.to_string()))?;
-
         Ok(App {
             game,
             focused: true,
             last_tick: Instant::now(),
-            cursor_pos: Vec2::ZERO,
         })
     }
 
+    /// Executes a single frame of the game loop with consistent timing and optional sleep.
+    ///
+    /// Calculates delta time since the last frame, runs game logic via `game.tick()`,
+    /// and implements frame rate limiting by sleeping for remaining time if the frame
+    /// completed faster than the target `LOOP_TIME`. Sleep behavior varies based on
+    /// window focus to conserve CPU when the game is not active.
+    ///
+    /// # Returns
+    ///
+    /// `true` if the game should continue running, `false` if the game requested exit.
     pub fn run(&mut self) -> bool {
         {
             let start = Instant::now();
@@ -116,17 +127,12 @@ impl App {
                 return false;
             }
 
-            // if let Err(e) = self.game.draw(&mut self.canvas, &mut self.backbuffer) {
-            //     error!("Failed to draw game: {}", e);
-            // }
-
+            // Sleep if we still have time left
             if start.elapsed() < LOOP_TIME {
                 let time = LOOP_TIME.saturating_sub(start.elapsed());
                 if time != Duration::ZERO {
                     get_platform().sleep(time, self.focused);
                 }
-            } else {
-                warn!("Game loop behind schedule by: {:?}", start.elapsed() - LOOP_TIME);
             }
 
             true

src/asset.rs

@@ -5,16 +5,28 @@
 use std::borrow::Cow;
 use strum_macros::EnumIter;
 
+/// Enumeration of all game assets with cross-platform loading support.
+///
+/// Each variant corresponds to a specific file that can be loaded either from
+/// binary-embedded data or embedded filesystem (Emscripten).
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, EnumIter)]
 pub enum Asset {
     Wav1,
     Wav2,
     Wav3,
     Wav4,
-    Atlas,
+    /// Main sprite atlas containing all game graphics (atlas.png)
+    AtlasImage,
+    /// Terminal Vector font for text rendering (TerminalVector.ttf)
+    Font,
 }
 
 impl Asset {
+    /// Returns the relative file path for this asset within the game's asset directory.
+    ///
+    /// Paths are consistent across platforms and used by the Emscripten backend
+    /// for filesystem loading. Desktop builds embed assets directly and don't
+    /// use these paths at runtime.
     #[allow(dead_code)]
     pub fn path(&self) -> &str {
         use Asset::*;
@@ -23,7 +35,8 @@ impl Asset {
             Wav2 => "sound/waka/2.ogg",
             Wav3 => "sound/waka/3.ogg",
             Wav4 => "sound/waka/4.ogg",
-            Atlas => "atlas.png",
+            AtlasImage => "atlas.png",
+            Font => "TerminalVector.ttf",
         }
     }
 }
@@ -33,7 +46,17 @@ mod imp {
     use crate::error::AssetError;
     use crate::platform::get_platform;
 
-    /// Returns the raw bytes of the given asset.
+    /// Loads asset bytes using the appropriate platform-specific method.
+    ///
+    /// On desktop platforms, returns embedded compile-time data via `include_bytes!`.
+    /// On Emscripten, loads from the filesystem using the asset's path. The returned
+    /// `Cow` allows zero-copy access to embedded data while supporting owned data
+    /// when loaded from disk.
+    ///
+    /// # Errors
+    ///
+    /// Returns `AssetError::NotFound` if the asset file cannot be located (Emscripten only),
+    /// or `AssetError::Io` for filesystem I/O failures.
     pub fn get_asset_bytes(asset: Asset) -> Result<Cow<'static, [u8]>, AssetError> {
         get_platform().get_asset_bytes(asset)
     }

src/audio.rs

@@ -114,9 +114,11 @@ impl Audio {
         }
     }
 
-    /// Plays the "eat" sound effect.
+    /// Plays the next waka eating sound in the cycle of four variants.
     ///
-    /// If audio is disabled or muted, this function does nothing.
+    /// Automatically rotates through the four eating sound assets. The sound plays on channel 0 and the internal sound index
+    /// advances to the next variant. Silently returns if audio is disabled, muted,
+    /// or no sounds were loaded successfully.
     #[allow(dead_code)]
     pub fn eat(&mut self) {
         if self.disabled || self.muted || self.sounds.is_empty() {
@@ -136,9 +138,11 @@ impl Audio {
         self.next_sound_index = (self.next_sound_index + 1) % self.sounds.len();
     }
 
-    /// Instantly mute or unmute all channels.
+    /// Instantly mutes or unmutes all audio channels by adjusting their volume.
     ///
-    /// If audio is disabled, this function does nothing.
+    /// Sets all 4 mixer channels to zero volume when muting, or restores them to
+    /// their default volume (32) when unmuting. The mute state is tracked internally
+    /// regardless of whether audio is disabled, allowing the state to be preserved.
     pub fn set_mute(&mut self, mute: bool) {
         if !self.disabled {
             let channels = 4;
@@ -151,12 +155,19 @@ impl Audio {
         self.muted = mute;
     }
 
-    /// Returns `true` if the audio is muted.
+    /// Returns the current mute state regardless of whether audio is functional.
+    ///
+    /// This tracks the user's mute preference and will return `true` if muted
+    /// even when the audio system is disabled due to initialization failures.
     pub fn is_muted(&self) -> bool {
         self.muted
     }
 
-    /// Returns `true` if the audio system is disabled.
+    /// Returns whether the audio system failed to initialize and is non-functional.
+    ///
+    /// Audio can be disabled due to SDL2_mixer initialization failures, missing
+    /// audio device, or failure to load any sound assets. When disabled, all
+    /// audio operations become no-ops.
     #[allow(dead_code)]
     pub fn is_disabled(&self) -> bool {
         self.disabled

src/constants.rs

@@ -4,6 +4,11 @@ use std::time::Duration;
 
 use glam::UVec2;
 
+/// Target frame duration for 60 FPS game loop timing.
+///
+/// Calculated as 1/60th of a second (≈16.67ms).
+///
+/// Written out explicitly to satisfy const-eval constraints.
 pub const LOOP_TIME: Duration = Duration::from_nanos((1_000_000_000.0 / 60.0) as u64);
 
 /// The size of each cell, in pixels.
@@ -14,32 +19,74 @@ pub const BOARD_CELL_SIZE: UVec2 = UVec2::new(28, 31);
 /// The scale factor for the window (integer zoom)
 pub const SCALE: f32 = 2.6;
 
-/// The offset of the game board from the top-left corner of the window, in cells.
+/// Game board offset from window origin to reserve space for HUD elements.
+///
+/// The 3-cell vertical offset (24 pixels) provides space at the top of the
+/// screen for score display, player lives, and other UI elements.
 pub const BOARD_CELL_OFFSET: UVec2 = UVec2::new(0, 3);
-/// The offset of the game board from the top-left corner of the window, in pixels.
+
+/// Pixel-space equivalent of `BOARD_CELL_OFFSET` for rendering calculations.
+///
+/// Automatically calculated from the cell offset to maintain consistency
+/// when the cell size changes. Used for positioning sprites and debug overlays.
 pub const BOARD_PIXEL_OFFSET: UVec2 = UVec2::new(BOARD_CELL_OFFSET.x * CELL_SIZE, BOARD_CELL_OFFSET.y * CELL_SIZE);
+
+/// Animation timing constants for ghost state management
+pub mod animation {
+    /// Normal ghost movement animation speed (ticks per frame at 60 ticks/sec)
+    pub const GHOST_NORMAL_SPEED: u16 = 12;
+    /// Eaten ghost (eyes) animation speed (ticks per frame at 60 ticks/sec)
+    pub const GHOST_EATEN_SPEED: u16 = 6;
+    /// Frightened ghost animation speed (ticks per frame at 60 ticks/sec)
+    pub const GHOST_FRIGHTENED_SPEED: u16 = 12;
+
+    /// Time in ticks when frightened ghosts start flashing (2 seconds at 60 FPS)
+    pub const FRIGHTENED_FLASH_START_TICKS: u32 = 120;
+}
 /// The size of the canvas, in pixels.
 pub const CANVAS_SIZE: UVec2 = UVec2::new(
     (BOARD_CELL_SIZE.x + BOARD_CELL_OFFSET.x) * CELL_SIZE,
     (BOARD_CELL_SIZE.y + BOARD_CELL_OFFSET.y) * CELL_SIZE,
 );
 
-/// An enum representing the different types of tiles on the map.
+/// Collider size constants for different entity types
+pub mod collider {
+    use super::CELL_SIZE;
+
+    /// Collider size for player and ghosts (1.375x cell size)
+    pub const PLAYER_GHOST_SIZE: f32 = CELL_SIZE as f32 * 1.375;
+    /// Collider size for pellets (0.4x cell size)
+    pub const PELLET_SIZE: f32 = CELL_SIZE as f32 * 0.4;
+    /// Collider size for power pellets/energizers (0.95x cell size)
+    pub const POWER_PELLET_SIZE: f32 = CELL_SIZE as f32 * 0.95;
+}
+
+/// UI and rendering constants
+pub mod ui {
+    /// Debug font size in points
+    pub const DEBUG_FONT_SIZE: u16 = 12;
+    /// Power pellet blink rate in seconds
+    pub const POWER_PELLET_BLINK_RATE: f32 = 0.2;
+}
+
+/// Map tile types that define gameplay behavior and collision properties.
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub enum MapTile {
-    /// An empty tile.
+    /// Traversable space with no collectible items
     Empty,
-    /// A wall tile.
     Wall,
-    /// A regular pellet.
+    /// Small collectible. Implicitly a traversable tile.
     Pellet,
-    /// A power pellet.
+    /// Large collectible. Implicitly a traversable tile.
     PowerPellet,
-    /// A tunnel tile.
+    /// Special traversable tile that connects to tunnel portals.
     Tunnel,
 }
 
-/// The raw layout of the game board, as a 2D array of characters.
+/// ASCII art representation of the classic Pac-Man maze layout.
+///
+/// Uses character symbols to define the game world. This layout is parsed by `MapTileParser`
+/// to generate the navigable graph and collision geometry.
 pub const RAW_BOARD: [&str; BOARD_CELL_SIZE.y as usize] = [
     "############################",
     "#............##............#",
@@ -73,3 +120,17 @@ pub const RAW_BOARD: [&str; BOARD_CELL_SIZE.y as usize] = [
     "#..........................#",
     "############################",
 ];
+
+/// Game initialization constants
+pub mod startup {
+    /// Number of frames for the startup sequence (3 seconds at 60 FPS)
+    pub const STARTUP_FRAMES: u32 = 60 * 3;
+    /// Number of ticks per frame during startup
+    pub const STARTUP_TICKS_PER_FRAME: u32 = 60;
+}
+
+/// Game mechanics constants
+pub mod mechanics {
+    /// Player movement speed multiplier
+    pub const PLAYER_SPEED: f32 = 1.15;
+}

src/ecs/interact.rs

@@ -1,172 +0,0 @@
-use bevy_ecs::{
-    event::{EventReader, EventWriter},
-    query::With,
-    system::{Query, Res, ResMut},
-};
-
-use crate::{
-    ecs::{DeltaTime, GlobalState, PlayerControlled, Position, Velocity},
-    error::{EntityError, GameError},
-    game::events::GameEvent,
-    input::commands::GameCommand,
-    map::builder::Map,
-};
-
-pub fn movement_system(
-    map: Res<Map>,
-    delta_time: Res<DeltaTime>,
-    mut entities: Query<(&PlayerControlled, &mut Velocity, &mut Position)>,
-    mut errors: EventWriter<GameError>,
-) {
-    for (player, mut velocity, mut position) in entities.iter_mut() {
-        let distance = velocity.speed.unwrap_or(0.0) * delta_time.0;
-
-        // Decrement the remaining frames for the next direction
-        if let Some((direction, remaining)) = velocity.next_direction {
-            if remaining > 0 {
-                velocity.next_direction = Some((direction, remaining - 1));
-            } else {
-                velocity.next_direction = None;
-            }
-        }
-
-        match *position {
-            Position::AtNode(node_id) => {
-                // We're not moving, but a buffered direction is available.
-                if let Some((next_direction, _)) = velocity.next_direction {
-                    if let Some(edge) = map.graph.find_edge_in_direction(node_id, next_direction) {
-                        // if edge.permissions.can_traverse(edge) {
-                        //     // Start moving in that direction
-                        *position = Position::BetweenNodes {
-                            from: node_id,
-                            to: edge.target,
-                            traversed: distance,
-                        };
-                        velocity.direction = next_direction;
-                        // } else {
-                        //     return Err(crate::error::GameError::Entity(crate::error::EntityError::InvalidMovement(
-                        //         format!(
-                        //             "Cannot traverse edge from {} to {} in direction {:?}",
-                        //             node_id, edge.target, next_direction
-                        //         ),
-                        //     )));
-                        // }
-                    } else {
-                        errors.write(
-                            EntityError::InvalidMovement(format!(
-                                "No edge found in direction {:?} from node {}",
-                                next_direction, node_id
-                            ))
-                            .into(),
-                        );
-                    }
-
-                    velocity.next_direction = None; // Consume the buffered direction regardless of whether we started moving with it
-                }
-            }
-            Position::BetweenNodes { from, to, traversed } => {
-                // There is no point in any of the next logic if we don't travel at all
-                if distance <= 0.0 {
-                    return;
-                }
-
-                let edge = map
-                    .graph
-                    .find_edge(from, to)
-                    .ok_or_else(|| {
-                        errors.write(
-                            EntityError::InvalidMovement(format!(
-                                "Inconsistent state: Traverser is on a non-existent edge from {} to {}.",
-                                from, to
-                            ))
-                            .into(),
-                        );
-                        return;
-                    })
-                    .unwrap();
-
-                let new_traversed = traversed + distance;
-
-                if new_traversed < edge.distance {
-                    // Still on the same edge, just update the distance.
-                    *position = Position::BetweenNodes {
-                        from,
-                        to,
-                        traversed: new_traversed,
-                    };
-                } else {
-                    let overflow = new_traversed - edge.distance;
-                    let mut moved = false;
-
-                    // If we buffered a direction, try to find an edge in that direction
-                    if let Some((next_dir, _)) = velocity.next_direction {
-                        if let Some(edge) = map.graph.find_edge_in_direction(to, next_dir) {
-                            // if edge.permissions.can_traverse(edge) {
-                            //     *position = Position::BetweenNodes {
-                            //         from: to,
-                            //         to: edge.target,
-                            //         traversed: overflow,
-                            //     };
-
-                            velocity.direction = next_dir; // Remember our new direction
-                            velocity.next_direction = None; // Consume the buffered direction
-                            moved = true;
-                            // }
-                        }
-                    }
-
-                    // If we didn't move, try to continue in the current direction
-                    if !moved {
-                        if let Some(edge) = map.graph.find_edge_in_direction(to, velocity.direction) {
-                            // if edge.permissions.can_traverse(edge) {
-                            *position = Position::BetweenNodes {
-                                from: to,
-                                to: edge.target,
-                                traversed: overflow,
-                            };
-                            // } else {
-                            //     *position = Position::AtNode(to);
-                            //     velocity.next_direction = None;
-                            // }
-                        } else {
-                            *position = Position::AtNode(to);
-                            velocity.next_direction = None;
-                        }
-                    }
-                }
-            }
-        }
-    }
-}
-
-// Handles
-pub fn interact_system(
-    mut events: EventReader<GameEvent>,
-    mut state: ResMut<GlobalState>,
-    mut players: Query<(&PlayerControlled, &mut Velocity)>,
-    mut errors: EventWriter<GameError>,
-) {
-    // Get the player's velocity (handling to ensure there is only one player)
-    let mut velocity = match players.single_mut() {
-        Ok((_, velocity)) => velocity,
-        Err(e) => {
-            errors.write(GameError::InvalidState(format!("Player not found: {}", e)).into());
-            return;
-        }
-    };
-
-    // Handle events
-    for event in events.read() {
-        match event {
-            GameEvent::Command(command) => match command {
-                GameCommand::MovePlayer(direction) => {
-                    velocity.direction = *direction;
-                }
-                GameCommand::Exit => {
-                    state.exit = true;
-                }
-                _ => {}
-            },
-        }
-    }
-}

src/ecs/mod.rs

@@ -1,150 +0,0 @@
-//! The Entity-Component-System (ECS) module.
-//!
-//! This module contains all the ECS-related logic, including components, systems,
-//! and resources.
-
-use bevy_ecs::{bundle::Bundle, component::Component, resource::Resource};
-use glam::Vec2;
-
-use crate::{
-    entity::{direction::Direction, graph::Graph, traversal},
-    error::{EntityError, GameResult},
-    texture::{
-        animated::AnimatedTexture,
-        directional::DirectionalAnimatedTexture,
-        sprite::{AtlasTile, Sprite},
-    },
-};
-
-/// A tag component for entities that are controlled by the player.
-#[derive(Default, Component)]
-pub struct PlayerControlled;
-
-/// A component for entities that have a sprite, with a layer for ordering.
-///
-/// This is intended to be modified by other entities allowing animation.
-#[derive(Component)]
-pub struct Renderable {
-    pub sprite: AtlasTile,
-    pub layer: u8,
-}
-
-/// A component for entities that have a directional animated texture.
-#[derive(Component)]
-pub struct DirectionalAnimated {
-    pub textures: [Option<AnimatedTexture>; 4],
-    pub stopped_textures: [Option<AnimatedTexture>; 4],
-}
-
-/// A unique identifier for a node, represented by its index in the graph's storage.
-pub type NodeId = usize;
-
-/// Represents the current position of an entity traversing the graph.
-///
-/// This enum allows for precise tracking of whether an entity is exactly at a node
-/// or moving along an edge between two nodes.
-#[derive(Component, Debug, Copy, Clone, PartialEq)]
-pub enum Position {
-    /// The traverser is located exactly at a node.
-    AtNode(NodeId),
-    /// The traverser is on an edge between two nodes.
-    BetweenNodes {
-        from: NodeId,
-        to: NodeId,
-        /// The floating-point distance traversed along the edge from the `from` node.
-        traversed: f32,
-    },
-}
-
-impl Position {
-    /// Calculates the current pixel position in the game world.
-    ///
-    /// Converts the graph position to screen coordinates, accounting for
-    /// the board offset and centering the sprite.
-    pub fn get_pixel_pos(&self, graph: &Graph) -> GameResult<Vec2> {
-        let pos = match self {
-            Position::AtNode(node_id) => {
-                let node = graph.get_node(*node_id).ok_or(EntityError::NodeNotFound(*node_id))?;
-                node.position
-            }
-            Position::BetweenNodes { from, to, traversed } => {
-                let from_node = graph.get_node(*from).ok_or(EntityError::NodeNotFound(*from))?;
-                let to_node = graph.get_node(*to).ok_or(EntityError::NodeNotFound(*to))?;
-                let edge = graph
-                    .find_edge(*from, *to)
-                    .ok_or(EntityError::EdgeNotFound { from: *from, to: *to })?;
-                from_node.position + (to_node.position - from_node.position) * (traversed / edge.distance)
-            }
-        };
-
-        Ok(Vec2::new(
-            pos.x + crate::constants::BOARD_PIXEL_OFFSET.x as f32,
-            pos.y + crate::constants::BOARD_PIXEL_OFFSET.y as f32,
-        ))
-    }
-}
-
-impl Default for Position {
-    fn default() -> Self {
-        Position::AtNode(0)
-    }
-}
-
-#[allow(dead_code)]
-impl Position {
-    /// Returns `true` if the position is exactly at a node.
-    pub fn is_at_node(&self) -> bool {
-        matches!(self, Position::AtNode(_))
-    }
-
-    /// Returns the `NodeId` of the current or most recently departed node.
-    #[allow(clippy::wrong_self_convention)]
-    pub fn from_node_id(&self) -> NodeId {
-        match self {
-            Position::AtNode(id) => *id,
-            Position::BetweenNodes { from, .. } => *from,
-        }
-    }
-
-    /// Returns the `NodeId` of the destination node, if currently on an edge.
-    #[allow(clippy::wrong_self_convention)]
-    pub fn to_node_id(&self) -> Option<NodeId> {
-        match self {
-            Position::AtNode(_) => None,
-            Position::BetweenNodes { to, .. } => Some(*to),
-        }
-    }
-
-    /// Returns `true` if the traverser is stopped at a node.
-    pub fn is_stopped(&self) -> bool {
-        matches!(self, Position::AtNode(_))
-    }
-}
-
-/// A component for entities that have a velocity, with a direction and speed.
-#[derive(Default, Component)]
-pub struct Velocity {
-    pub direction: Direction,
-    pub next_direction: Option<(Direction, u8)>,
-    pub speed: Option<f32>,
-}
-
-#[derive(Bundle)]
-pub struct PlayerBundle {
-    pub player: PlayerControlled,
-    pub position: Position,
-    pub velocity: Velocity,
-    pub sprite: Renderable,
-    pub directional_animated: DirectionalAnimated,
-}
-
-#[derive(Resource)]
-pub struct GlobalState {
-    pub exit: bool,
-}
-
-#[derive(Resource)]
-pub struct DeltaTime(pub f32);
-
-pub mod interact;
-pub mod render;

src/ecs/render.rs

@@ -1,95 +0,0 @@
-use crate::ecs::{DeltaTime, DirectionalAnimated, Position, Renderable, Velocity};
-use crate::error::{EntityError, GameError, TextureError};
-use crate::map::builder::Map;
-use crate::texture::sprite::SpriteAtlas;
-use bevy_ecs::entity::Entity;
-use bevy_ecs::event::EventWriter;
-use bevy_ecs::system::{NonSendMut, Query, Res};
-use sdl2::render::{Canvas, Texture};
-use sdl2::video::Window;
-
-/// Updates the directional animated texture of an entity.
-pub fn directional_render_system(
-    dt: Res<DeltaTime>,
-    mut renderables: Query<(&Velocity, &mut DirectionalAnimated, &mut Renderable)>,
-    mut errors: EventWriter<GameError>,
-) {
-    for (velocity, mut texture, mut renderable) in renderables.iter_mut() {
-        let texture = if velocity.speed.is_none() {
-            texture.stopped_textures[velocity.direction.as_usize()].as_mut()
-        } else {
-            texture.textures[velocity.direction.as_usize()].as_mut()
-        };
-
-        if let Some(texture) = texture {
-            texture.tick(dt.0);
-            renderable.sprite = *texture.current_tile();
-        } else {
-            errors.write(TextureError::RenderFailed(format!("Entity has no texture")).into());
-            continue;
-        }
-    }
-}
-
-pub struct MapTextureResource(pub Texture<'static>);
-pub struct BackbufferResource(pub Texture<'static>);
-
-pub fn render_system(
-    mut canvas: NonSendMut<&mut Canvas<Window>>,
-    map_texture: NonSendMut<MapTextureResource>,
-    mut backbuffer: NonSendMut<BackbufferResource>,
-    mut atlas: NonSendMut<SpriteAtlas>,
-    map: Res<Map>,
-    mut renderables: Query<(Entity, &mut Renderable, &Position)>,
-    mut errors: EventWriter<GameError>,
-) {
-    // Clear the main canvas first
-    canvas.set_draw_color(sdl2::pixels::Color::BLACK);
-    canvas.clear();
-
-    // Render to backbuffer
-    canvas
-        .with_texture_canvas(&mut backbuffer.0, |backbuffer_canvas| {
-            // Clear the backbuffer
-            backbuffer_canvas.set_draw_color(sdl2::pixels::Color::BLACK);
-            backbuffer_canvas.clear();
-
-            // Copy the pre-rendered map texture to the backbuffer
-            backbuffer_canvas
-                .copy(&map_texture.0, None, None)
-                .err()
-                .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
-
-            // Render all entities to the backbuffer
-            for (_, mut renderable, position) in renderables.iter_mut() {
-                let pos = position.get_pixel_pos(&map.graph);
-                match pos {
-                    Ok(pos) => {
-                        let dest = crate::helpers::centered_with_size(
-                            glam::IVec2::new(pos.x as i32, pos.y as i32),
-                            glam::UVec2::new(renderable.sprite.size.x as u32, renderable.sprite.size.y as u32),
-                        );
-
-                        renderable
-                            .sprite
-                            .render(backbuffer_canvas, &mut atlas, dest)
-                            .err()
-                            .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
-                    }
-                    Err(e) => {
-                        errors.write(e.into());
-                    }
-                }
-            }
-        })
-        .err()
-        .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
-
-    // Copy backbuffer to main canvas and present
-    canvas
-        .copy(&backbuffer.0, None, None)
-        .err()
-        .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
-
-    canvas.present();
-}

src/entity/collision.rs

@@ -1,128 +0,0 @@
-// use smallvec::SmallVec;
-// use std::collections::HashMap;
-
-// use crate::entity::{graph::NodeId, traversal::Position};
-
-// /// Trait for entities that can participate in collision detection.
-// pub trait Collidable {
-//     /// Returns the current position of this entity.
-//     fn position(&self) -> Position;
-
-//     /// Checks if this entity is colliding with another entity.
-//     #[allow(dead_code)]
-//     fn is_colliding_with(&self, other: &dyn Collidable) -> bool {
-//         positions_overlap(&self.position(), &other.position())
-//     }
-// }
-
-// /// System for tracking entities by their positions for efficient collision detection.
-// #[derive(Default)]
-// pub struct CollisionSystem {
-//     /// Maps node IDs to lists of entity IDs that are at that node
-//     node_entities: HashMap<NodeId, Vec<EntityId>>,
-//     /// Maps entity IDs to their current positions
-//     entity_positions: HashMap<EntityId, Position>,
-//     /// Next available entity ID
-//     next_id: EntityId,
-// }
-
-// /// Unique identifier for an entity in the collision system
-// pub type EntityId = u32;
-
-// impl CollisionSystem {
-//     /// Registers an entity with the collision system and returns its ID
-//     pub fn register_entity(&mut self, position: Position) -> EntityId {
-//         let id = self.next_id;
-//         self.next_id += 1;
-
-//         self.entity_positions.insert(id, position);
-//         self.update_node_entities(id, position);
-
-//         id
-//     }
-
-//     /// Updates an entity's position
-//     pub fn update_position(&mut self, entity_id: EntityId, new_position: Position) {
-//         if let Some(old_position) = self.entity_positions.get(&entity_id) {
-//             // Remove from old nodes
-//             self.remove_from_nodes(entity_id, *old_position);
-//         }
-
-//         // Update position and add to new nodes
-//         self.entity_positions.insert(entity_id, new_position);
-//         self.update_node_entities(entity_id, new_position);
-//     }
-
-//     /// Removes an entity from the collision system
-//     #[allow(dead_code)]
-//     pub fn remove_entity(&mut self, entity_id: EntityId) {
-//         if let Some(position) = self.entity_positions.remove(&entity_id) {
-//             self.remove_from_nodes(entity_id, position);
-//         }
-//     }
-
-//     /// Gets all entity IDs at a specific node
-//     pub fn entities_at_node(&self, node: NodeId) -> &[EntityId] {
-//         self.node_entities.get(&node).map(|v| v.as_slice()).unwrap_or(&[])
-//     }
-
-//     /// Gets all entity IDs that could collide with an entity at the given position
-//     pub fn potential_collisions(&self, position: &Position) -> Vec<EntityId> {
-//         let mut collisions = Vec::new();
-//         let nodes = get_nodes(position);
-
-//         for node in nodes {
-//             collisions.extend(self.entities_at_node(node));
-//         }
-
-//         // Remove duplicates
-//         collisions.sort_unstable();
-//         collisions.dedup();
-//         collisions
-//     }
-
-//     /// Updates the node_entities map when an entity's position changes
-//     fn update_node_entities(&mut self, entity_id: EntityId, position: Position) {
-//         let nodes = get_nodes(&position);
-//         for node in nodes {
-//             self.node_entities.entry(node).or_default().push(entity_id);
-//         }
-//     }
-
-//     /// Removes an entity from all nodes it was previously at
-//     fn remove_from_nodes(&mut self, entity_id: EntityId, position: Position) {
-//         let nodes = get_nodes(&position);
-//         for node in nodes {
-//             if let Some(entities) = self.node_entities.get_mut(&node) {
-//                 entities.retain(|&id| id != entity_id);
-//                 if entities.is_empty() {
-//                     self.node_entities.remove(&node);
-//                 }
-//             }
-//         }
-//     }
-// }
-
-// /// Checks if two positions overlap (entities are at the same location).
-// fn positions_overlap(a: &Position, b: &Position) -> bool {
-//     let a_nodes = get_nodes(a);
-//     let b_nodes = get_nodes(b);
-
-//     // Check if any nodes overlap
-//     a_nodes.iter().any(|a_node| b_nodes.contains(a_node))
-
-//     // TODO: More complex overlap detection, the above is a simple check, but it could become an early filter for more precise calculations later
-// }
-
-// /// Gets all nodes that an entity is currently at or between.
-// fn get_nodes(pos: &Position) -> SmallVec<[NodeId; 2]> {
-//     let mut nodes = SmallVec::new();
-//     match pos {
-//         Position::AtNode(node) => nodes.push(*node),
-//         Position::BetweenNodes { from, to, .. } => {
-//             nodes.push(*from);
-//             nodes.push(*to);
-//         }
-//     }
-//     nodes
-// }

src/entity/ghost.rs

@@ -1,254 +0,0 @@
-// //! Ghost entity implementation.
-// //!
-// //! This module contains the ghost character logic, including movement,
-// //! animation, and rendering. Ghosts move through the game graph using
-// //! a traverser and display directional animated textures.
-
-// use pathfinding::prelude::dijkstra;
-// use rand::prelude::*;
-// use smallvec::SmallVec;
-// use tracing::error;
-
-// use crate::entity::{
-//     collision::Collidable,
-//     direction::Direction,
-//     graph::{Edge, EdgePermissions, Graph, NodeId},
-//     r#trait::Entity,
-//     traversal::Traverser,
-// };
-// use crate::texture::animated::AnimatedTexture;
-// use crate::texture::directional::DirectionalAnimatedTexture;
-// use crate::texture::sprite::SpriteAtlas;
-
-// use crate::error::{EntityError, GameError, GameResult, TextureError};
-
-// /// Determines if a ghost can traverse a given edge.
-// ///
-// /// Ghosts can move through edges that allow all entities or ghost-only edges.
-// fn can_ghost_traverse(edge: Edge) -> bool {
-//     matches!(edge.permissions, EdgePermissions::All | EdgePermissions::GhostsOnly)
-// }
-
-// /// The four classic ghost types.
-// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-// pub enum GhostType {
-//     Blinky,
-//     Pinky,
-//     Inky,
-//     Clyde,
-// }
-
-// impl GhostType {
-//     /// Returns the ghost type name for atlas lookups.
-//     pub fn as_str(self) -> &'static str {
-//         match self {
-//             GhostType::Blinky => "blinky",
-//             GhostType::Pinky => "pinky",
-//             GhostType::Inky => "inky",
-//             GhostType::Clyde => "clyde",
-//         }
-//     }
-
-//     /// Returns the base movement speed for this ghost type.
-//     pub fn base_speed(self) -> f32 {
-//         match self {
-//             GhostType::Blinky => 1.0,
-//             GhostType::Pinky => 0.95,
-//             GhostType::Inky => 0.9,
-//             GhostType::Clyde => 0.85,
-//         }
-//     }
-// }
-
-// /// A ghost entity that roams the game world.
-// ///
-// /// Ghosts move through the game world using a graph-based navigation system
-// /// and display directional animated sprites. They randomly choose directions
-// /// at each intersection.
-// pub struct Ghost {
-//     /// Handles movement through the game graph
-//     pub traverser: Traverser,
-//     /// The type of ghost (affects appearance and speed)
-//     pub ghost_type: GhostType,
-//     /// Manages directional animated textures for different movement states
-//     texture: DirectionalAnimatedTexture,
-//     /// Current movement speed
-//     speed: f32,
-// }
-
-// impl Entity for Ghost {
-//     fn traverser(&self) -> &Traverser {
-//         &self.traverser
-//     }
-
-//     fn traverser_mut(&mut self) -> &mut Traverser {
-//         &mut self.traverser
-//     }
-
-//     fn texture(&self) -> &DirectionalAnimatedTexture {
-//         &self.texture
-//     }
-
-//     fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
-//         &mut self.texture
-//     }
-
-//     fn speed(&self) -> f32 {
-//         self.speed
-//     }
-
-//     fn can_traverse(&self, edge: Edge) -> bool {
-//         can_ghost_traverse(edge)
-//     }
-
-//     fn tick(&mut self, dt: f32, graph: &Graph) {
-//         // Choose random direction when at a node
-//         if self.traverser.position.is_at_node() {
-//             self.choose_random_direction(graph);
-//         }
-
-//         if let Err(e) = self.traverser.advance(graph, dt * 60.0 * self.speed, &can_ghost_traverse) {
-//             error!("Ghost movement error: {}", e);
-//         }
-//         self.texture.tick(dt);
-//     }
-// }
-
-// impl Ghost {
-//     /// Creates a new ghost instance at the specified starting node.
-//     ///
-//     /// Sets up animated textures for all four directions with moving and stopped states.
-//     /// The moving animation cycles through two sprite variants.
-//     pub fn new(graph: &Graph, start_node: NodeId, ghost_type: GhostType, atlas: &SpriteAtlas) -> GameResult<Self> {
-//         let mut textures = [None, None, None, None];
-//         let mut stopped_textures = [None, None, None, None];
-
-//         for direction in Direction::DIRECTIONS {
-//             let moving_prefix = match direction {
-//                 Direction::Up => "up",
-//                 Direction::Down => "down",
-//                 Direction::Left => "left",
-//                 Direction::Right => "right",
-//             };
-//             let moving_tiles = vec![
-//                 SpriteAtlas::get_tile(atlas, &format!("ghost/{}/{}_{}.png", ghost_type.as_str(), moving_prefix, "a"))
-//                     .ok_or_else(|| {
-//                         GameError::Texture(TextureError::AtlasTileNotFound(format!(
-//                             "ghost/{}/{}_{}.png",
-//                             ghost_type.as_str(),
-//                             moving_prefix,
-//                             "a"
-//                         )))
-//                     })?,
-//                 SpriteAtlas::get_tile(atlas, &format!("ghost/{}/{}_{}.png", ghost_type.as_str(), moving_prefix, "b"))
-//                     .ok_or_else(|| {
-//                         GameError::Texture(TextureError::AtlasTileNotFound(format!(
-//                             "ghost/{}/{}_{}.png",
-//                             ghost_type.as_str(),
-//                             moving_prefix,
-//                             "b"
-//                         )))
-//                     })?,
-//             ];
-
-//             let stopped_tiles =
-//                 vec![
-//                     SpriteAtlas::get_tile(atlas, &format!("ghost/{}/{}_{}.png", ghost_type.as_str(), moving_prefix, "a"))
-//                         .ok_or_else(|| {
-//                             GameError::Texture(TextureError::AtlasTileNotFound(format!(
-//                                 "ghost/{}/{}_{}.png",
-//                                 ghost_type.as_str(),
-//                                 moving_prefix,
-//                                 "a"
-//                             )))
-//                         })?,
-//                 ];
-
-//             textures[direction.as_usize()] = Some(AnimatedTexture::new(moving_tiles, 0.2)?);
-//             stopped_textures[direction.as_usize()] = Some(AnimatedTexture::new(stopped_tiles, 0.1)?);
-//         }
-
-//         Ok(Self {
-//             traverser: Traverser::new(graph, start_node, Direction::Left, &can_ghost_traverse),
-//             ghost_type,
-//             texture: DirectionalAnimatedTexture::new(textures, stopped_textures),
-//             speed: ghost_type.base_speed(),
-//         })
-//     }
-
-//     /// Chooses a random available direction at the current intersection.
-//     fn choose_random_direction(&mut self, graph: &Graph) {
-//         let current_node = self.traverser.position.from_node_id();
-//         let intersection = &graph.adjacency_list[current_node];
-
-//         // Collect all available directions
-//         let mut available_directions = SmallVec::<[_; 4]>::new();
-//         for direction in Direction::DIRECTIONS {
-//             if let Some(edge) = intersection.get(direction) {
-//                 if can_ghost_traverse(edge) {
-//                     available_directions.push(direction);
-//                 }
-//             }
-//         }
-//         // Choose a random direction (avoid reversing unless necessary)
-//         if !available_directions.is_empty() {
-//             let mut rng = SmallRng::from_os_rng();
-
-//             // Filter out the opposite direction if possible, but allow it if we have limited options
-//             let opposite = self.traverser.direction.opposite();
-//             let filtered_directions: Vec<_> = available_directions
-//                 .iter()
-//                 .filter(|&&dir| dir != opposite || available_directions.len() <= 2)
-//                 .collect();
-
-//             if let Some(&random_direction) = filtered_directions.choose(&mut rng) {
-//                 self.traverser.set_next_direction(*random_direction);
-//             }
-//         }
-//     }
-
-//     /// Calculates the shortest path from the ghost's current position to a target node using Dijkstra's algorithm.
-//     ///
-//     /// Returns a vector of NodeIds representing the path, or an error if pathfinding fails.
-//     /// The path includes the current node and the target node.
-//     pub fn calculate_path_to_target(&self, graph: &Graph, target: NodeId) -> GameResult<Vec<NodeId>> {
-//         let start_node = self.traverser.position.from_node_id();
-
-//         // Use Dijkstra's algorithm to find the shortest path
-//         let result = dijkstra(
-//             &start_node,
-//             |&node_id| {
-//                 // Get all edges from the current node
-//                 graph.adjacency_list[node_id]
-//                     .edges()
-//                     .filter(|edge| can_ghost_traverse(*edge))
-//                     .map(|edge| (edge.target, (edge.distance * 100.0) as u32))
-//                     .collect::<Vec<_>>()
-//             },
-//             |&node_id| node_id == target,
-//         );
-
-//         result.map(|(path, _cost)| path).ok_or_else(|| {
-//             GameError::Entity(EntityError::PathfindingFailed(format!(
-//                 "No path found from node {} to target {}",
-//                 start_node, target
-//             )))
-//         })
-//     }
-
-//     /// Returns the ghost's color for debug rendering.
-//     pub fn debug_color(&self) -> sdl2::pixels::Color {
-//         match self.ghost_type {
-//             GhostType::Blinky => sdl2::pixels::Color::RGB(255, 0, 0),    // Red
-//             GhostType::Pinky => sdl2::pixels::Color::RGB(255, 182, 255), // Pink
-//             GhostType::Inky => sdl2::pixels::Color::RGB(0, 255, 255),    // Cyan
-//             GhostType::Clyde => sdl2::pixels::Color::RGB(255, 182, 85),  // Orange
-//         }
-//     }
-// }
-
-// impl Collidable for Ghost {
-//     fn position(&self) -> crate::entity::traversal::Position {
-//         self.traverser.position
-//     }
-// }

src/entity/item.rs

@@ -1,117 +0,0 @@
-// use crate::{
-//     constants,
-//     entity::{collision::Collidable, graph::Graph},
-//     error::{EntityError, GameResult},
-//     texture::sprite::{Sprite, SpriteAtlas},
-// };
-// use sdl2::render::{Canvas, RenderTarget};
-// use strum_macros::{EnumCount, EnumIter};
-
-// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-// pub enum ItemType {
-//     Pellet,
-//     Energizer,
-//     #[allow(dead_code)]
-//     Fruit {
-//         kind: FruitKind,
-//     },
-// }
-
-// impl ItemType {
-//     pub fn get_score(self) -> u32 {
-//         match self {
-//             ItemType::Pellet => 10,
-//             ItemType::Energizer => 50,
-//             ItemType::Fruit { kind } => kind.get_score(),
-//         }
-//     }
-// }
-
-// #[derive(Debug, Clone, Copy, PartialEq, Eq, EnumIter, EnumCount)]
-// #[allow(dead_code)]
-// pub enum FruitKind {
-//     Apple,
-//     Strawberry,
-//     Orange,
-//     Melon,
-//     Bell,
-//     Key,
-//     Galaxian,
-// }
-
-// impl FruitKind {
-//     #[allow(dead_code)]
-//     pub fn index(self) -> u8 {
-//         match self {
-//             FruitKind::Apple => 0,
-//             FruitKind::Strawberry => 1,
-//             FruitKind::Orange => 2,
-//             FruitKind::Melon => 3,
-//             FruitKind::Bell => 4,
-//             FruitKind::Key => 5,
-//             FruitKind::Galaxian => 6,
-//         }
-//     }
-
-//     pub fn get_score(self) -> u32 {
-//         match self {
-//             FruitKind::Apple => 100,
-//             FruitKind::Strawberry => 300,
-//             FruitKind::Orange => 500,
-//             FruitKind::Melon => 700,
-//             FruitKind::Bell => 1000,
-//             FruitKind::Key => 2000,
-//             FruitKind::Galaxian => 3000,
-//         }
-//     }
-// }
-
-// pub struct Item {
-//     pub node_index: usize,
-//     pub item_type: ItemType,
-//     pub sprite: Sprite,
-//     pub collected: bool,
-// }
-
-// impl Item {
-//     pub fn new(node_index: usize, item_type: ItemType, sprite: Sprite) -> Self {
-//         Self {
-//             node_index,
-//             item_type,
-//             sprite,
-//             collected: false,
-//         }
-//     }
-
-//     pub fn is_collected(&self) -> bool {
-//         self.collected
-//     }
-
-//     pub fn collect(&mut self) {
-//         self.collected = true;
-//     }
-
-//     pub fn get_score(&self) -> u32 {
-//         self.item_type.get_score()
-//     }
-
-//     pub fn render<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, graph: &Graph) -> GameResult<()> {
-//         if self.collected {
-//             return Ok(());
-//         }
-
-//         let node = graph
-//             .get_node(self.node_index)
-//             .ok_or(EntityError::NodeNotFound(self.node_index))?;
-//         let position = node.position + constants::BOARD_PIXEL_OFFSET.as_vec2();
-
-//         self.sprite.render(canvas, atlas, position)?;
-//         Ok(())
-//     }
-// }
-
-// impl Collidable for Item {
-//     fn position(&self) -> crate::entity::traversal::Position {
-//         crate::entity::traversal::Position::AtNode(self.node_index)
-//     }
-// }

src/entity/mod.rs

@@ -1,8 +0,0 @@
-pub mod collision;
-pub mod direction;
-pub mod ghost;
-pub mod graph;
-pub mod item;
-pub mod pacman;
-pub mod r#trait;
-pub mod traversal;

src/entity/pacman.rs

@@ -1,115 +0,0 @@
-// //! Pac-Man entity implementation.
-// //!
-// //! This module contains the main player character logic, including movement,
-// //! animation, and rendering. Pac-Man moves through the game graph using
-// //! a traverser and displays directional animated textures.
-
-// use crate::entity::{
-//     collision::Collidable,
-//     direction::Direction,
-//     graph::{Edge, EdgePermissions, Graph, NodeId},
-//     r#trait::Entity,
-//     traversal::Traverser,
-// };
-// use crate::texture::animated::AnimatedTexture;
-// use crate::texture::directional::DirectionalAnimatedTexture;
-// use crate::texture::sprite::SpriteAtlas;
-// use tracing::error;
-
-// use crate::error::{GameError, GameResult, TextureError};
-
-// /// Determines if Pac-Man can traverse a given edge.
-// ///
-// /// Pac-Man can only move through edges that allow all entities.
-// fn can_pacman_traverse(edge: Edge) -> bool {
-//     matches!(edge.permissions, EdgePermissions::All)
-// }
-
-// /// The main player character entity.
-// ///
-// /// Pac-Man moves through the game world using a graph-based navigation system
-// /// and displays directional animated sprites based on movement state.
-// pub struct Pacman {
-//     /// Handles movement through the game graph
-//     pub traverser: Traverser,
-//     /// Manages directional animated textures for different movement states
-//     texture: DirectionalAnimatedTexture,
-// }
-
-// impl Entity for Pacman {
-//     fn traverser(&self) -> &Traverser {
-//         &self.traverser
-//     }
-
-//     fn traverser_mut(&mut self) -> &mut Traverser {
-//         &mut self.traverser
-//     }
-
-//     fn texture(&self) -> &DirectionalAnimatedTexture {
-//         &self.texture
-//     }
-
-//     fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
-//         &mut self.texture
-//     }
-
-//     fn speed(&self) -> f32 {
-//         1.125
-//     }
-
-//     fn can_traverse(&self, edge: Edge) -> bool {
-//         can_pacman_traverse(edge)
-//     }
-
-//     fn tick(&mut self, dt: f32, graph: &Graph) {
-//         if let Err(e) = self.traverser.advance(graph, dt * 60.0 * 1.125, &can_pacman_traverse) {
-//             error!("Pac-Man movement error: {}", e);
-//         }
-//         self.texture.tick(dt);
-//     }
-// }
-
-// impl Pacman {
-//     /// Creates a new Pac-Man instance at the specified starting node.
-//     ///
-//     /// Sets up animated textures for all four directions with moving and stopped states.
-//     /// The moving animation cycles through open mouth, closed mouth, and full sprites.
-//     pub fn new(graph: &Graph, start_node: NodeId, atlas: &SpriteAtlas) -> GameResult<Self> {
-//         let mut textures = [None, None, None, None];
-//         let mut stopped_textures = [None, None, None, None];
-
-//         for direction in Direction::DIRECTIONS {
-//             let moving_prefix = match direction {
-//                 Direction::Up => "pacman/up",
-//                 Direction::Down => "pacman/down",
-//                 Direction::Left => "pacman/left",
-//                 Direction::Right => "pacman/right",
-//             };
-//             let moving_tiles = vec![
-//                 SpriteAtlas::get_tile(atlas, &format!("{moving_prefix}_a.png"))
-//                     .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_a.png"))))?,
-//                 SpriteAtlas::get_tile(atlas, &format!("{moving_prefix}_b.png"))
-//                     .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_b.png"))))?,
-//                 SpriteAtlas::get_tile(atlas, "pacman/full.png")
-//                     .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
-//             ];
-
-//             let stopped_tiles = vec![SpriteAtlas::get_tile(atlas, &format!("{moving_prefix}_b.png"))
-//                 .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_b.png"))))?];
-
-//             textures[direction.as_usize()] = Some(AnimatedTexture::new(moving_tiles, 0.08)?);
-//             stopped_textures[direction.as_usize()] = Some(AnimatedTexture::new(stopped_tiles, 0.1)?);
-//         }
-
-//         Ok(Self {
-//             traverser: Traverser::new(graph, start_node, Direction::Left, &can_pacman_traverse),
-//             texture: DirectionalAnimatedTexture::new(textures, stopped_textures),
-//         })
-//     }
-// }
-
-// impl Collidable for Pacman {
-//     fn position(&self) -> crate::entity::traversal::Position {
-//         self.traverser.position
-//     }
-// }

src/entity/trait.rs

@@ -1,114 +0,0 @@
-// //! Entity trait for common movement and rendering functionality.
-// //!
-// //! This module defines a trait that captures the shared behavior between
-// //! different game entities like Ghosts and Pac-Man, including movement,
-// //! rendering, and position calculations.
-
-// use glam::Vec2;
-// use sdl2::render::{Canvas, RenderTarget};
-
-// use crate::entity::direction::Direction;
-// use crate::entity::graph::{Edge, Graph, NodeId};
-// use crate::entity::traversal::{Position, Traverser};
-// use crate::error::{EntityError, GameError, GameResult, TextureError};
-// use crate::texture::directional::DirectionalAnimatedTexture;
-// use crate::texture::sprite::SpriteAtlas;
-
-// /// Trait defining common functionality for game entities that move through the graph.
-// ///
-// /// This trait provides a unified interface for entities that:
-// /// - Move through the game graph using a traverser
-// /// - Render using directional animated textures
-// /// - Have position calculations and movement speed
-// #[allow(dead_code)]
-// pub trait Entity {
-//     /// Returns a reference to the entity's traverser for movement control.
-//     fn traverser(&self) -> &Traverser;
-
-//     /// Returns a mutable reference to the entity's traverser for movement control.
-//     fn traverser_mut(&mut self) -> &mut Traverser;
-
-//     /// Returns a reference to the entity's directional animated texture.
-//     fn texture(&self) -> &DirectionalAnimatedTexture;
-
-//     /// Returns a mutable reference to the entity's directional animated texture.
-//     fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture;
-
-//     /// Returns the movement speed multiplier for this entity.
-//     fn speed(&self) -> f32;
-
-//     /// Determines if this entity can traverse a given edge.
-//     fn can_traverse(&self, edge: Edge) -> bool;
-
-//     /// Updates the entity's position and animation state.
-//     ///
-//     /// This method advances movement through the graph and updates texture animation.
-//     fn tick(&mut self, dt: f32, graph: &Graph);
-
-//     /// Calculates the current pixel position in the game world.
-//     ///
-//     /// Converts the graph position to screen coordinates, accounting for
-//     /// the board offset and centering the sprite.
-//     fn get_pixel_pos(&self, graph: &Graph) -> GameResult<Vec2> {
-//         let pos = match self.traverser().position {
-//             Position::AtNode(node_id) => {
-//                 let node = graph.get_node(node_id).ok_or(EntityError::NodeNotFound(node_id))?;
-//                 node.position
-//             }
-//             Position::BetweenNodes { from, to, traversed } => {
-//                 let from_node = graph.get_node(from).ok_or(EntityError::NodeNotFound(from))?;
-//                 let to_node = graph.get_node(to).ok_or(EntityError::NodeNotFound(to))?;
-//                 let edge = graph.find_edge(from, to).ok_or(EntityError::EdgeNotFound { from, to })?;
-//                 from_node.position + (to_node.position - from_node.position) * (traversed / edge.distance)
-//             }
-//         };
-
-//         Ok(Vec2::new(
-//             pos.x + crate::constants::BOARD_PIXEL_OFFSET.x as f32,
-//             pos.y + crate::constants::BOARD_PIXEL_OFFSET.y as f32,
-//         ))
-//     }
-
-//     /// Returns the current node ID that the entity is at or moving towards.
-//     ///
-//     /// If the entity is at a node, returns that node ID.
-//     /// If the entity is between nodes, returns the node it's moving towards.
-//     fn current_node_id(&self) -> NodeId {
-//         match self.traverser().position {
-//             Position::AtNode(node_id) => node_id,
-//             Position::BetweenNodes { to, .. } => to,
-//         }
-//     }
-
-//     /// Sets the next direction for the entity to take.
-//     ///
-//     /// The direction is buffered and will be applied at the next opportunity,
-//     /// typically when the entity reaches a new node.
-//     fn set_next_direction(&mut self, direction: Direction) {
-//         self.traverser_mut().set_next_direction(direction);
-//     }
-
-//     /// Renders the entity at its current position.
-//     ///
-//     /// Draws the appropriate directional sprite based on the entity's
-//     /// current movement state and direction.
-//     fn render<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, graph: &Graph) -> GameResult<()> {
-//         let pixel_pos = self.get_pixel_pos(graph)?;
-//         let dest = crate::helpers::centered_with_size(
-//             glam::IVec2::new(pixel_pos.x as i32, pixel_pos.y as i32),
-//             glam::UVec2::new(16, 16),
-//         );
-
-//         if self.traverser().position.is_stopped() {
-//             self.texture()
-//                 .render_stopped(canvas, atlas, dest, self.traverser().direction)
-//                 .map_err(|e| GameError::Texture(TextureError::RenderFailed(e.to_string())))?;
-//         } else {
-//             self.texture()
-//                 .render(canvas, atlas, dest, self.traverser().direction)
-//                 .map_err(|e| GameError::Texture(TextureError::RenderFailed(e.to_string())))?;
-//         }
-
-//         Ok(())
-//     }
-// }

src/entity/traversal.rs

@@ -1,161 +0,0 @@
-use tracing::error;
-
-use crate::ecs::{NodeId, Position};
-use crate::error::GameResult;
-
-use super::direction::Direction;
-use super::graph::{Edge, Graph};
-
-/// Manages an entity's movement through the graph.
-///
-/// A `Traverser` encapsulates the state of an entity's position and direction,
-/// providing a way to advance along the graph's paths based on a given distance.
-/// It also handles direction changes, buffering the next intended direction.
-pub struct Traverser {
-    /// The current position of the traverser in the graph.
-    pub position: Position,
-    /// The current direction of movement.
-    pub direction: Direction,
-    /// Buffered direction change with remaining frame count for timing.
-    ///
-    /// The `u8` value represents the number of frames remaining before
-    /// the buffered direction expires. This allows for responsive controls
-    /// by storing direction changes for a limited time.
-    pub next_direction: Option<(Direction, u8)>,
-}
-
-impl Traverser {
-    /// Sets the next direction for the traverser to take.
-    ///
-    /// The direction is buffered and will be applied at the next opportunity,
-    /// typically when the traverser reaches a new node. This allows for responsive
-    /// controls, as the new direction is stored for a limited time.
-    pub fn set_next_direction(&mut self, new_direction: Direction) {
-        if self.direction != new_direction {
-            self.next_direction = Some((new_direction, 30));
-        }
-    }
-
-    /// Advances the traverser along the graph by a specified distance.
-    ///
-    /// This method updates the traverser's position based on its current state
-    /// and the distance to travel.
-    ///
-    /// - If at a node, it checks for a buffered direction to start moving.
-    /// - If between nodes, it moves along the current edge.
-    /// - If it reaches a node, it attempts to transition to a new edge based on
-    ///   the buffered direction or by continuing straight.
-    /// - If no valid move is possible, it stops at the node.
-    ///
-    /// Returns an error if the movement is invalid (e.g., trying to move in an impossible direction).
-    pub fn advance<F>(&mut self, graph: &Graph, distance: f32, can_traverse: &F) -> GameResult<()>
-    where
-        F: Fn(Edge) -> bool,
-    {
-        // Decrement the remaining frames for the next direction
-        if let Some((direction, remaining)) = self.next_direction {
-            if remaining > 0 {
-                self.next_direction = Some((direction, remaining - 1));
-            } else {
-                self.next_direction = None;
-            }
-        }
-
-        match self.position {
-            Position::AtNode(node_id) => {
-                // We're not moving, but a buffered direction is available.
-                if let Some((next_direction, _)) = self.next_direction {
-                    if let Some(edge) = graph.find_edge_in_direction(node_id, next_direction) {
-                        if can_traverse(edge) {
-                            // Start moving in that direction
-                            self.position = Position::BetweenNodes {
-                                from: node_id,
-                                to: edge.target,
-                                traversed: distance.max(0.0),
-                            };
-                            self.direction = next_direction;
-                        } else {
-                            return Err(crate::error::GameError::Entity(crate::error::EntityError::InvalidMovement(
-                                format!(
-                                    "Cannot traverse edge from {} to {} in direction {:?}",
-                                    node_id, edge.target, next_direction
-                                ),
-                            )));
-                        }
-                    } else {
-                        return Err(crate::error::GameError::Entity(crate::error::EntityError::InvalidMovement(
-                            format!("No edge found in direction {:?} from node {}", next_direction, node_id),
-                        )));
-                    }
-
-                    self.next_direction = None; // Consume the buffered direction regardless of whether we started moving with it
-                }
-            }
-            Position::BetweenNodes { from, to, traversed } => {
-                // There is no point in any of the next logic if we don't travel at all
-                if distance <= 0.0 {
-                    return Ok(());
-                }
-
-                let edge = graph.find_edge(from, to).ok_or_else(|| {
-                    crate::error::GameError::Entity(crate::error::EntityError::InvalidMovement(format!(
-                        "Inconsistent state: Traverser is on a non-existent edge from {} to {}.",
-                        from, to
-                    )))
-                })?;
-
-                let new_traversed = traversed + distance;
-
-                if new_traversed < edge.distance {
-                    // Still on the same edge, just update the distance.
-                    self.position = Position::BetweenNodes {
-                        from,
-                        to,
-                        traversed: new_traversed,
-                    };
-                } else {
-                    let overflow = new_traversed - edge.distance;
-                    let mut moved = false;
-
-                    // If we buffered a direction, try to find an edge in that direction
-                    if let Some((next_dir, _)) = self.next_direction {
-                        if let Some(edge) = graph.find_edge_in_direction(to, next_dir) {
-                            if can_traverse(edge) {
-                                self.position = Position::BetweenNodes {
-                                    from: to,
-                                    to: edge.target,
-                                    traversed: overflow,
-                                };
-
-                                self.direction = next_dir; // Remember our new direction
-                                self.next_direction = None; // Consume the buffered direction
-                                moved = true;
-                            }
-                        }
-                    }
-
-                    // If we didn't move, try to continue in the current direction
-                    if !moved {
-                        if let Some(edge) = graph.find_edge_in_direction(to, self.direction) {
-                            if can_traverse(edge) {
-                                self.position = Position::BetweenNodes {
-                                    from: to,
-                                    to: edge.target,
-                                    traversed: overflow,
-                                };
-                            } else {
-                                self.position = Position::AtNode(to);
-                                self.next_direction = None;
-                            }
-                        } else {
-                            self.position = Position::AtNode(to);
-                            self.next_direction = None;
-                        }
-                    }
-                }
-            }
-        }
-
-        Ok(())
-    }
-}

src/error.rs

@@ -31,9 +31,6 @@ pub enum GameError {
     #[error("Entity error: {0}")]
     Entity(#[from] EntityError),
 
-    #[error("Game state error: {0}")]
-    GameState(#[from] GameStateError),
-
     #[error("SDL error: {0}")]
     Sdl(String),
 
@@ -51,6 +48,8 @@ pub enum GameError {
 pub enum AssetError {
     #[error("IO error: {0}")]
     Io(#[from] io::Error),
+
+    #[allow(dead_code)]
     #[error("Asset not found: {0}")]
     NotFound(String),
 }
@@ -79,9 +78,6 @@ pub enum ParseError {
 /// Errors related to texture operations.
 #[derive(thiserror::Error, Debug)]
 pub enum TextureError {
-    #[error("Animated texture error: {0}")]
-    Animated(#[from] AnimatedTextureError),
-
     #[error("Failed to load texture: {0}")]
     LoadFailed(String),
 
@@ -95,12 +91,6 @@ pub enum TextureError {
     RenderFailed(String),
 }
 
-#[derive(thiserror::Error, Debug)]
-pub enum AnimatedTextureError {
-    #[error("Frame duration must be positive, got {0}")]
-    InvalidFrameDuration(f32),
-}
-
 /// Errors related to entity operations.
 #[derive(thiserror::Error, Debug)]
 pub enum EntityError {
@@ -109,18 +99,8 @@ pub enum EntityError {
 
     #[error("Edge not found: from {from} to {to}")]
     EdgeNotFound { from: usize, to: usize },
-
-    #[error("Invalid movement: {0}")]
-    InvalidMovement(String),
-
-    #[error("Pathfinding failed: {0}")]
-    PathfindingFailed(String),
 }
 
-/// Errors related to game state operations.
-#[derive(thiserror::Error, Debug)]
-pub enum GameStateError {}
-
 /// Errors related to map operations.
 #[derive(thiserror::Error, Debug)]
 pub enum MapError {

src/events.rs

@@ -0,0 +1,42 @@
+use bevy_ecs::{entity::Entity, event::Event};
+
+use crate::map::direction::Direction;
+
+/// Player input commands that trigger specific game actions.
+///
+/// Commands are generated by the input system in response to keyboard events
+/// and processed by appropriate game systems to modify state or behavior.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum GameCommand {
+    /// Request immediate game shutdown
+    Exit,
+    /// Set Pac-Man's movement direction
+    MovePlayer(Direction),
+    /// Cycle through debug visualization modes
+    ToggleDebug,
+    /// Toggle audio mute state
+    MuteAudio,
+    /// Restart the current level with fresh entity positions and items
+    ResetLevel,
+    /// Pause or resume game ticking logic
+    TogglePause,
+}
+
+/// Global events that flow through the ECS event system to coordinate game behavior.
+///
+/// Events enable loose coupling between systems - input generates commands, collision
+/// detection reports overlaps, and various systems respond appropriately without
+/// direct dependencies.
+#[derive(Event, Clone, Copy, Debug, PartialEq, Eq)]
+pub enum GameEvent {
+    /// Player input command to be processed by relevant game systems
+    Command(GameCommand),
+    /// Physical overlap detected between two entities requiring gameplay response
+    Collision(Entity, Entity),
+}
+
+impl From<GameCommand> for GameEvent {
+    fn from(command: GameCommand) -> Self {
+        GameEvent::Command(command)
+    }
+}

src/game.rs

@@ -0,0 +1,665 @@
+//! This module contains the main game logic and state.
+
+include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
+
+use std::collections::HashMap;
+
+use crate::constants::{self, animation, MapTile, CANVAS_SIZE};
+use crate::error::{GameError, GameResult, TextureError};
+use crate::events::GameEvent;
+use crate::map::builder::Map;
+use crate::map::direction::Direction;
+use crate::systems::blinking::Blinking;
+use crate::systems::components::{GhostAnimation, GhostState, LastAnimationState};
+use crate::systems::movement::{BufferedDirection, Position, Velocity};
+use crate::systems::profiling::SystemId;
+use crate::systems::render::RenderDirty;
+use crate::systems::{self, ghost_collision_system, present_system, Hidden, LinearAnimation, MovementModifiers, NodeId};
+use crate::systems::{
+    audio_system, blinking_system, collision_system, debug_render_system, directional_render_system, dirty_render_system,
+    eaten_ghost_system, ghost_movement_system, ghost_state_system, hud_render_system, item_system, linear_render_system, profile,
+    render_system, AudioEvent, AudioResource, AudioState, BackbufferResource, Collider, DebugFontResource, DebugState,
+    DebugTextureResource, DeltaTime, DirectionalAnimation, EntityType, Frozen, Ghost, GhostAnimations, GhostBundle,
+    GhostCollider, GlobalState, ItemBundle, ItemCollider, MapTextureResource, PacmanCollider, PlayerBundle, PlayerControlled,
+    Renderable, ScoreResource, StartupSequence, SystemTimings,
+};
+use crate::texture::animated::{DirectionalTiles, TileSequence};
+use crate::texture::sprite::AtlasTile;
+use bevy_ecs::event::EventRegistry;
+use bevy_ecs::observer::Trigger;
+use bevy_ecs::schedule::common_conditions::resource_changed;
+use bevy_ecs::schedule::{Condition, IntoScheduleConfigs, Schedule, SystemSet};
+use bevy_ecs::system::ResMut;
+use bevy_ecs::world::World;
+use sdl2::image::LoadTexture;
+use sdl2::render::{BlendMode, Canvas, ScaleMode, TextureCreator};
+use sdl2::rwops::RWops;
+use sdl2::video::{Window, WindowContext};
+use sdl2::EventPump;
+
+use crate::{
+    asset::{get_asset_bytes, Asset},
+    events::GameCommand,
+    map::render::MapRenderer,
+    systems::input::{Bindings, CursorPosition},
+    texture::sprite::{AtlasMapper, SpriteAtlas},
+};
+
+/// System set for all rendering systems to ensure they run after gameplay logic
+#[derive(SystemSet, Debug, Hash, PartialEq, Eq, Clone)]
+pub struct RenderSet;
+
+/// Core game state manager built on the Bevy ECS architecture.
+///
+/// Orchestrates all game systems through a centralized `World` containing entities,
+/// components, and resources, while a `Schedule` defines system execution order.
+/// Handles initialization of graphics resources, entity spawning, and per-frame
+/// game logic coordination. SDL2 resources are stored as `NonSend` to respect
+/// thread safety requirements while integrating with the ECS.
+pub struct Game {
+    pub world: World,
+    pub schedule: Schedule,
+}
+
+impl Game {
+    /// Initializes the complete game state including ECS world, graphics, and entity spawning.
+    ///
+    /// Performs extensive setup: creates render targets and debug textures, loads and parses
+    /// the sprite atlas, renders the static map to a cached texture, builds the navigation
+    /// graph from the board layout, spawns Pac-Man with directional animations, creates
+    /// all four ghosts with their AI behavior, and places collectible items throughout
+    /// the maze. Registers event types and configures the system execution schedule.
+    ///
+    /// # Arguments
+    ///
+    /// * `canvas` - SDL2 rendering context with static lifetime for ECS storage
+    /// * `texture_creator` - SDL2 texture factory for creating render targets
+    /// * `event_pump` - SDL2 event polling interface for input handling
+    ///
+    /// # Errors
+    ///
+    /// Returns `GameError` for SDL2 failures, asset loading problems, atlas parsing
+    /// errors, or entity initialization issues.
+    pub fn new(
+        canvas: &'static mut Canvas<Window>,
+        texture_creator: &'static mut TextureCreator<WindowContext>,
+        event_pump: &'static mut EventPump,
+    ) -> GameResult<Game> {
+        let ttf_context = Box::leak(Box::new(sdl2::ttf::init().map_err(|e| GameError::Sdl(e.to_string()))?));
+        let mut backbuffer = texture_creator
+            .create_texture_target(None, CANVAS_SIZE.x, CANVAS_SIZE.y)
+            .map_err(|e| GameError::Sdl(e.to_string()))?;
+        backbuffer.set_scale_mode(ScaleMode::Nearest);
+
+        let mut map_texture = texture_creator
+            .create_texture_target(None, CANVAS_SIZE.x, CANVAS_SIZE.y)
+            .map_err(|e| GameError::Sdl(e.to_string()))?;
+        map_texture.set_scale_mode(ScaleMode::Nearest);
+
+        // Create debug texture at output resolution for crisp debug rendering
+        let output_size = canvas.output_size().unwrap();
+        let mut debug_texture = texture_creator
+            .create_texture_target(None, output_size.0, output_size.1)
+            .map_err(|e| GameError::Sdl(e.to_string()))?;
+
+        // Debug texture is copied over the backbuffer, it requires transparency abilities
+        debug_texture.set_blend_mode(BlendMode::Blend);
+        debug_texture.set_scale_mode(ScaleMode::Nearest);
+
+        let font_data = get_asset_bytes(Asset::Font)?;
+        let static_font_data: &'static [u8] = Box::leak(font_data.to_vec().into_boxed_slice());
+        let font_asset = RWops::from_bytes(static_font_data).map_err(|_| GameError::Sdl("Failed to load font".to_string()))?;
+        let debug_font = ttf_context
+            .load_font_from_rwops(font_asset, constants::ui::DEBUG_FONT_SIZE)
+            .map_err(|e| GameError::Sdl(e.to_string()))?;
+
+        // Initialize audio system
+        let audio = crate::audio::Audio::new();
+
+        // Load atlas and create map texture
+        let atlas_bytes = get_asset_bytes(Asset::AtlasImage)?;
+        let atlas_texture = texture_creator.load_texture_bytes(&atlas_bytes).map_err(|e| {
+            if e.to_string().contains("format") || e.to_string().contains("unsupported") {
+                GameError::Texture(crate::error::TextureError::InvalidFormat(format!(
+                    "Unsupported texture format: {e}"
+                )))
+            } else {
+                GameError::Texture(crate::error::TextureError::LoadFailed(e.to_string()))
+            }
+        })?;
+
+        let atlas_mapper = AtlasMapper {
+            frames: ATLAS_FRAMES.into_iter().map(|(k, v)| (k.to_string(), *v)).collect(),
+        };
+        let mut atlas = SpriteAtlas::new(atlas_texture, atlas_mapper);
+
+        // Create map tiles
+        let mut map_tiles = Vec::with_capacity(35);
+        for i in 0..35 {
+            let tile_name = format!("maze/tiles/{}.png", i);
+            let tile = atlas.get_tile(&tile_name).unwrap();
+            map_tiles.push(tile);
+        }
+
+        // Render map to texture
+        canvas
+            .with_texture_canvas(&mut map_texture, |map_canvas| {
+                MapRenderer::render_map(map_canvas, &mut atlas, &map_tiles);
+            })
+            .map_err(|e| GameError::Sdl(e.to_string()))?;
+
+        let map = Map::new(constants::RAW_BOARD)?;
+
+        // Create directional animated textures for Pac-Man
+        let up_moving_tiles = [
+            SpriteAtlas::get_tile(&atlas, "pacman/up_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/up_a.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/up_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/up_b.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+        ];
+        let down_moving_tiles = [
+            SpriteAtlas::get_tile(&atlas, "pacman/down_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/down_a.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/down_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/down_b.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+        ];
+        let left_moving_tiles = [
+            SpriteAtlas::get_tile(&atlas, "pacman/left_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/left_a.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/left_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/left_b.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+        ];
+        let right_moving_tiles = [
+            SpriteAtlas::get_tile(&atlas, "pacman/right_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/right_a.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/right_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/right_b.png".to_string())))?,
+            SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+        ];
+
+        let moving_tiles = DirectionalTiles::new(
+            TileSequence::new(&up_moving_tiles),
+            TileSequence::new(&down_moving_tiles),
+            TileSequence::new(&left_moving_tiles),
+            TileSequence::new(&right_moving_tiles),
+        );
+
+        let up_stopped_tile = SpriteAtlas::get_tile(&atlas, "pacman/up_b.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/up_b.png".to_string())))?;
+        let down_stopped_tile = SpriteAtlas::get_tile(&atlas, "pacman/down_b.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/down_b.png".to_string())))?;
+        let left_stopped_tile = SpriteAtlas::get_tile(&atlas, "pacman/left_b.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/left_b.png".to_string())))?;
+        let right_stopped_tile = SpriteAtlas::get_tile(&atlas, "pacman/right_b.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/right_b.png".to_string())))?;
+
+        let stopped_tiles = DirectionalTiles::new(
+            TileSequence::new(&[up_stopped_tile]),
+            TileSequence::new(&[down_stopped_tile]),
+            TileSequence::new(&[left_stopped_tile]),
+            TileSequence::new(&[right_stopped_tile]),
+        );
+
+        let player = PlayerBundle {
+            player: PlayerControlled,
+            position: Position::Stopped {
+                node: map.start_positions.pacman,
+            },
+            velocity: Velocity {
+                speed: constants::mechanics::PLAYER_SPEED,
+                direction: Direction::Left,
+            },
+            movement_modifiers: MovementModifiers::default(),
+            buffered_direction: BufferedDirection::None,
+            sprite: Renderable {
+                sprite: SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+                layer: 0,
+            },
+            directional_animation: DirectionalAnimation::new(moving_tiles, stopped_tiles, 5),
+            entity_type: EntityType::Player,
+            collider: Collider {
+                size: constants::collider::PLAYER_GHOST_SIZE,
+            },
+            pacman_collider: PacmanCollider,
+        };
+
+        let mut world = World::default();
+        let mut schedule = Schedule::default();
+
+        EventRegistry::register_event::<GameError>(&mut world);
+        EventRegistry::register_event::<GameEvent>(&mut world);
+        EventRegistry::register_event::<AudioEvent>(&mut world);
+
+        world.insert_resource(Self::create_ghost_animations(&atlas)?);
+        world.insert_resource(map);
+        world.insert_resource(GlobalState { exit: false });
+        world.insert_resource(ScoreResource(0));
+        world.insert_resource(SystemTimings::default());
+        world.insert_resource(Bindings::default());
+        world.insert_resource(DeltaTime(0f32));
+        world.insert_resource(RenderDirty::default());
+        world.insert_resource(DebugState::default());
+        world.insert_resource(AudioState::default());
+        world.insert_resource(CursorPosition::default());
+        world.insert_resource(StartupSequence::new(
+            constants::startup::STARTUP_FRAMES,
+            constants::startup::STARTUP_TICKS_PER_FRAME,
+        ));
+
+        world.insert_non_send_resource(atlas);
+        world.insert_non_send_resource(event_pump);
+        world.insert_non_send_resource(canvas);
+        world.insert_non_send_resource(BackbufferResource(backbuffer));
+        world.insert_non_send_resource(MapTextureResource(map_texture));
+        world.insert_non_send_resource(DebugTextureResource(debug_texture));
+        world.insert_non_send_resource(DebugFontResource(debug_font));
+        world.insert_non_send_resource(AudioResource(audio));
+
+        world.add_observer(
+            |event: Trigger<GameEvent>, mut state: ResMut<GlobalState>, _score: ResMut<ScoreResource>| {
+                if matches!(*event, GameEvent::Command(GameCommand::Exit)) {
+                    state.exit = true;
+                }
+            },
+        );
+
+        let input_system = profile(SystemId::Input, systems::input::input_system);
+        let player_control_system = profile(SystemId::PlayerControls, systems::player_control_system);
+        let player_movement_system = profile(SystemId::PlayerMovement, systems::player_movement_system);
+        let startup_stage_system = profile(SystemId::Stage, systems::startup_stage_system);
+        let player_tunnel_slowdown_system = profile(SystemId::PlayerMovement, systems::player::player_tunnel_slowdown_system);
+        let ghost_movement_system = profile(SystemId::Ghost, ghost_movement_system);
+        let collision_system = profile(SystemId::Collision, collision_system);
+        let ghost_collision_system = profile(SystemId::GhostCollision, ghost_collision_system);
+
+        let item_system = profile(SystemId::Item, item_system);
+        let audio_system = profile(SystemId::Audio, audio_system);
+        let blinking_system = profile(SystemId::Blinking, blinking_system);
+        let directional_render_system = profile(SystemId::DirectionalRender, directional_render_system);
+        let linear_render_system = profile(SystemId::LinearRender, linear_render_system);
+        let dirty_render_system = profile(SystemId::DirtyRender, dirty_render_system);
+        let render_system = profile(SystemId::Render, render_system);
+        let hud_render_system = profile(SystemId::HudRender, hud_render_system);
+        let debug_render_system = profile(SystemId::DebugRender, debug_render_system);
+        let present_system = profile(SystemId::Present, present_system);
+        let unified_ghost_state_system = profile(SystemId::GhostStateAnimation, ghost_state_system);
+
+        let forced_dirty_system = |mut dirty: ResMut<RenderDirty>| {
+            dirty.0 = true;
+        };
+
+        schedule.add_systems((
+            forced_dirty_system.run_if(resource_changed::<ScoreResource>.or(resource_changed::<StartupSequence>)),
+            (
+                input_system,
+                player_control_system,
+                player_movement_system,
+                startup_stage_system,
+            )
+                .chain(),
+            player_tunnel_slowdown_system,
+            ghost_movement_system,
+            profile(SystemId::EatenGhost, eaten_ghost_system),
+            unified_ghost_state_system,
+            (collision_system, ghost_collision_system, item_system).chain(),
+            audio_system,
+            blinking_system,
+            (
+                directional_render_system,
+                linear_render_system,
+                dirty_render_system,
+                render_system,
+                hud_render_system,
+                debug_render_system,
+                present_system,
+            )
+                .chain(),
+        ));
+
+        // Spawn player and attach initial state bundle
+        world.spawn(player).insert((Frozen, Hidden));
+
+        // Spawn ghosts
+        Self::spawn_ghosts(&mut world)?;
+
+        let pellet_sprite = SpriteAtlas::get_tile(world.non_send_resource::<SpriteAtlas>(), "maze/pellet.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("maze/pellet.png".to_string())))?;
+        let energizer_sprite = SpriteAtlas::get_tile(world.non_send_resource::<SpriteAtlas>(), "maze/energizer.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("maze/energizer.png".to_string())))?;
+
+        // Build a list of item entities to spawn from the map
+        let nodes: Vec<(NodeId, EntityType, AtlasTile, f32)> = world
+            .resource::<Map>()
+            .iter_nodes()
+            .filter_map(|(id, tile)| match tile {
+                MapTile::Pellet => Some((*id, EntityType::Pellet, pellet_sprite, constants::collider::PELLET_SIZE)),
+                MapTile::PowerPellet => Some((
+                    *id,
+                    EntityType::PowerPellet,
+                    energizer_sprite,
+                    constants::collider::POWER_PELLET_SIZE,
+                )),
+                _ => None,
+            })
+            .collect();
+
+        // Construct and spawn the item entities
+        for (id, item_type, sprite, size) in nodes {
+            let mut item = world.spawn(ItemBundle {
+                position: Position::Stopped { node: id },
+                sprite: Renderable { sprite, layer: 1 },
+                entity_type: item_type,
+                collider: Collider { size },
+                item_collider: ItemCollider,
+            });
+
+            // Make power pellets blink
+            if item_type == EntityType::PowerPellet {
+                item.insert((Frozen, Blinking::new(constants::ui::POWER_PELLET_BLINK_RATE)));
+            }
+        }
+
+        Ok(Game { world, schedule })
+    }
+
+    /// Creates and spawns all four ghosts with unique AI personalities and directional animations.
+    ///
+    /// # Errors
+    ///
+    /// Returns `GameError::Texture` if any ghost sprite cannot be found in the atlas,
+    /// typically indicating missing or misnamed sprite files.
+    fn spawn_ghosts(world: &mut World) -> GameResult<()> {
+        // Extract the data we need first to avoid borrow conflicts
+        let ghost_start_positions = {
+            let map = world.resource::<Map>();
+            [
+                (Ghost::Blinky, map.start_positions.blinky),
+                (Ghost::Pinky, map.start_positions.pinky),
+                (Ghost::Inky, map.start_positions.inky),
+                (Ghost::Clyde, map.start_positions.clyde),
+            ]
+        };
+
+        for (ghost_type, start_node) in ghost_start_positions {
+            // Create the ghost bundle in a separate scope to manage borrows
+            let ghost = {
+                let animations = *world.resource::<GhostAnimations>().get_normal(&ghost_type).unwrap();
+                let atlas = world.non_send_resource::<SpriteAtlas>();
+
+                GhostBundle {
+                    ghost: ghost_type,
+                    position: Position::Stopped { node: start_node },
+                    velocity: Velocity {
+                        speed: ghost_type.base_speed(),
+                        direction: Direction::Left,
+                    },
+                    sprite: Renderable {
+                        sprite: SpriteAtlas::get_tile(atlas, &format!("ghost/{}/left_a.png", ghost_type.as_str())).ok_or_else(
+                            || {
+                                GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                                    "ghost/{}/left_a.png",
+                                    ghost_type.as_str()
+                                )))
+                            },
+                        )?,
+                        layer: 0,
+                    },
+                    directional_animation: animations,
+                    entity_type: EntityType::Ghost,
+                    collider: Collider {
+                        size: constants::collider::PLAYER_GHOST_SIZE,
+                    },
+                    ghost_collider: GhostCollider,
+                    ghost_state: GhostState::Normal,
+                    last_animation_state: LastAnimationState(GhostAnimation::Normal),
+                }
+            };
+
+            world.spawn(ghost).insert((Frozen, Hidden));
+        }
+
+        Ok(())
+    }
+
+    fn create_ghost_animations(atlas: &SpriteAtlas) -> GameResult<GhostAnimations> {
+        // Eaten (eyes) animations - single tile per direction
+        let up_eye = atlas
+            .get_tile("ghost/eyes/up.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/eyes/up.png".to_string())))?;
+        let down_eye = atlas
+            .get_tile("ghost/eyes/down.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/eyes/down.png".to_string())))?;
+        let left_eye = atlas
+            .get_tile("ghost/eyes/left.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/eyes/left.png".to_string())))?;
+        let right_eye = atlas
+            .get_tile("ghost/eyes/right.png")
+            .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/eyes/right.png".to_string())))?;
+
+        let eyes_tiles = DirectionalTiles::new(
+            TileSequence::new(&[up_eye]),
+            TileSequence::new(&[down_eye]),
+            TileSequence::new(&[left_eye]),
+            TileSequence::new(&[right_eye]),
+        );
+        let eyes = DirectionalAnimation::new(eyes_tiles, eyes_tiles, animation::GHOST_EATEN_SPEED);
+
+        let mut animations = HashMap::new();
+
+        for ghost_type in [Ghost::Blinky, Ghost::Pinky, Ghost::Inky, Ghost::Clyde] {
+            // Normal animations - create directional tiles for each direction
+            let up_tiles = [
+                atlas
+                    .get_tile(&format!("ghost/{}/up_a.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/up_a.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+                atlas
+                    .get_tile(&format!("ghost/{}/up_b.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/up_b.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+            ];
+            let down_tiles = [
+                atlas
+                    .get_tile(&format!("ghost/{}/down_a.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/down_a.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+                atlas
+                    .get_tile(&format!("ghost/{}/down_b.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/down_b.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+            ];
+            let left_tiles = [
+                atlas
+                    .get_tile(&format!("ghost/{}/left_a.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/left_a.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+                atlas
+                    .get_tile(&format!("ghost/{}/left_b.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/left_b.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+            ];
+            let right_tiles = [
+                atlas
+                    .get_tile(&format!("ghost/{}/right_a.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/right_a.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+                atlas
+                    .get_tile(&format!("ghost/{}/right_b.png", ghost_type.as_str()))
+                    .ok_or_else(|| {
+                        GameError::Texture(TextureError::AtlasTileNotFound(format!(
+                            "ghost/{}/right_b.png",
+                            ghost_type.as_str()
+                        )))
+                    })?,
+            ];
+
+            let normal_moving = DirectionalTiles::new(
+                TileSequence::new(&up_tiles),
+                TileSequence::new(&down_tiles),
+                TileSequence::new(&left_tiles),
+                TileSequence::new(&right_tiles),
+            );
+            let normal = DirectionalAnimation::new(normal_moving, normal_moving, animation::GHOST_NORMAL_SPEED);
+
+            animations.insert(ghost_type, normal);
+        }
+
+        let (frightened, frightened_flashing) = {
+            // Load frightened animation tiles (same for all ghosts)
+            let frightened_blue_a = atlas
+                .get_tile("ghost/frightened/blue_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/frightened/blue_a.png".to_string())))?;
+            let frightened_blue_b = atlas
+                .get_tile("ghost/frightened/blue_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/frightened/blue_b.png".to_string())))?;
+            let frightened_white_a = atlas
+                .get_tile("ghost/frightened/white_a.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/frightened/white_a.png".to_string())))?;
+            let frightened_white_b = atlas
+                .get_tile("ghost/frightened/white_b.png")
+                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("ghost/frightened/white_b.png".to_string())))?;
+
+            (
+                LinearAnimation::new(
+                    TileSequence::new(&[frightened_blue_a, frightened_blue_b]),
+                    animation::GHOST_NORMAL_SPEED,
+                ),
+                LinearAnimation::new(
+                    TileSequence::new(&[frightened_blue_a, frightened_white_a, frightened_blue_b, frightened_white_b]),
+                    animation::GHOST_FRIGHTENED_SPEED,
+                ),
+            )
+        };
+
+        Ok(GhostAnimations::new(animations, eyes, frightened, frightened_flashing))
+    }
+
+    /// Executes one frame of game logic by running all scheduled ECS systems.
+    ///
+    /// Updates the world's delta time resource and runs the complete system pipeline:
+    /// input processing, entity movement, collision detection, item collection,
+    /// audio playback, animation updates, and rendering. Each system operates on
+    /// relevant entities and modifies world state, with the schedule ensuring
+    /// proper execution order and data dependencies.
+    ///
+    /// # Arguments
+    ///
+    /// * `dt` - Frame delta time in seconds for time-based animations and movement
+    ///
+    /// # Returns
+    ///
+    /// `true` if the game should terminate (exit command received), `false` to continue
+    pub fn tick(&mut self, dt: f32) -> bool {
+        self.world.insert_resource(DeltaTime(dt));
+
+        // Run all systems
+        self.schedule.run(&mut self.world);
+
+        let state = self
+            .world
+            .get_resource::<GlobalState>()
+            .expect("GlobalState could not be acquired");
+
+        state.exit
+    }
+
+    // /// Renders pathfinding debug lines from each ghost to Pac-Man.
+    // ///
+    // /// Each ghost's path is drawn in its respective color with a small offset
+    // /// to prevent overlapping lines.
+    // fn render_pathfinding_debug<T: sdl2::render::RenderTarget>(&self, canvas: &mut Canvas<T>) -> GameResult<()> {
+    //     let pacman_node = self.state.pacman.current_node_id();
+
+    //     for ghost in self.state.ghosts.iter() {
+    //         if let Ok(path) = ghost.calculate_path_to_target(&self.state.map.graph, pacman_node) {
+    //             if path.len() < 2 {
+    //                 continue; // Skip if path is too short
+    //             }
+
+    //             // Set the ghost's color
+    //             canvas.set_draw_color(ghost.debug_color());
+
+    //             // Calculate offset based on ghost index to prevent overlapping lines
+    //             // let offset = (i as f32) * 2.0 - 3.0; // Offset range: -3.0 to 3.0
+
+    //             // Calculate a consistent offset direction for the entire path
+    //             // let first_node = self.map.graph.get_node(path[0]).unwrap();
+    //             // let last_node = self.map.graph.get_node(path[path.len() - 1]).unwrap();
+
+    //             // Use the overall direction from start to end to determine the perpendicular offset
+    //             let offset = match ghost.ghost_type {
+    //                 GhostType::Blinky => glam::Vec2::new(0.25, 0.5),
+    //                 GhostType::Pinky => glam::Vec2::new(-0.25, -0.25),
+    //                 GhostType::Inky => glam::Vec2::new(0.5, -0.5),
+    //                 GhostType::Clyde => glam::Vec2::new(-0.5, 0.25),
+    //             } * 5.0;
+
+    //             // Calculate offset positions for all nodes using the same perpendicular direction
+    //             let mut offset_positions = Vec::new();
+    //             for &node_id in &path {
+    //                 let node = self
+    //                     .state
+    //                     .map
+    //                     .graph
+    //                     .get_node(node_id)
+    //                     .ok_or(crate::error::EntityError::NodeNotFound(node_id))?;
+    //                 let pos = node.position + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
+    //                 offset_positions.push(pos + offset);
+    //             }
+
+    //             // Draw lines between the offset positions
+    //             for window in offset_positions.windows(2) {
+    //                 if let (Some(from), Some(to)) = (window.first(), window.get(1)) {
+    //                     // Skip if the distance is too far (used for preventing lines between tunnel portals)
+    //                     if from.distance_squared(*to) > (crate::constants::CELL_SIZE * 16).pow(2) as f32 {
+    //                         continue;
+    //                     }
+
+    //                     // Draw the line
+    //                     canvas
+    //                         .draw_line((from.x as i32, from.y as i32), (to.x as i32, to.y as i32))
+    //                         .map_err(|e| crate::error::GameError::Sdl(e.to_string()))?;
+    //                 }
+    //             }
+    //         }
+    //     }
+
+    //     Ok(())
+    // }
+}

src/game/events.rs

@@ -1,14 +0,0 @@
-use bevy_ecs::event::Event;
-
-use crate::input::commands::GameCommand;
-
-#[derive(Debug, Clone, Copy, Event)]
-pub enum GameEvent {
-    Command(GameCommand),
-}
-
-impl From<GameCommand> for GameEvent {
-    fn from(command: GameCommand) -> Self {
-        GameEvent::Command(command)
-    }
-}

src/game/mod.rs

@@ -1,528 +0,0 @@
-//! This module contains the main game logic and state.
-
-include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
-
-use crate::constants::CANVAS_SIZE;
-use crate::ecs::interact::{interact_system, movement_system};
-use crate::ecs::render::{directional_render_system, render_system, BackbufferResource, MapTextureResource};
-use crate::ecs::{DeltaTime, DirectionalAnimated, GlobalState, PlayerBundle, PlayerControlled, Position, Renderable, Velocity};
-use crate::entity::direction::Direction;
-use crate::entity::{graph, traversal};
-use crate::error::{GameError, GameResult, TextureError};
-use crate::input::commands::GameCommand;
-use crate::map::builder::Map;
-use crate::texture::animated::AnimatedTexture;
-use crate::texture::directional::DirectionalAnimatedTexture;
-use crate::texture::sprite::Sprite;
-use bevy_ecs::event::EventRegistry;
-use bevy_ecs::observer::Trigger;
-use bevy_ecs::schedule::IntoScheduleConfigs;
-use bevy_ecs::system::{Commands, ResMut};
-use bevy_ecs::{schedule::Schedule, world::World};
-use sdl2::image::LoadTexture;
-use sdl2::render::{Canvas, ScaleMode, Texture, TextureCreator};
-use sdl2::video::{Window, WindowContext};
-use sdl2::EventPump;
-
-use crate::asset::{get_asset_bytes, Asset};
-use crate::input::{handle_input, Bindings};
-use crate::map::render::MapRenderer;
-use crate::{
-    constants,
-    texture::sprite::{AtlasMapper, AtlasTile, SpriteAtlas},
-};
-
-use self::events::GameEvent;
-
-pub mod events;
-pub mod state;
-
-/// The `Game` struct is the main entry point for the game.
-///
-/// It contains the game's state and logic, and is responsible for
-/// handling user input, updating the game state, and rendering the game.
-pub struct Game {
-    pub world: World,
-    pub schedule: Schedule,
-}
-
-impl Game {
-    pub fn new(
-        canvas: &'static mut Canvas<Window>,
-        texture_creator: &'static mut TextureCreator<WindowContext>,
-        event_pump: &'static mut EventPump,
-    ) -> GameResult<Game> {
-        let mut world = World::default();
-        let mut schedule = Schedule::default();
-
-        EventRegistry::register_event::<GameError>(&mut world);
-        EventRegistry::register_event::<GameEvent>(&mut world);
-
-        let mut backbuffer = texture_creator
-            .create_texture_target(None, CANVAS_SIZE.x, CANVAS_SIZE.y)
-            .map_err(|e| GameError::Sdl(e.to_string()))?;
-        backbuffer.set_scale_mode(ScaleMode::Nearest);
-
-        let mut map_texture = texture_creator
-            .create_texture_target(None, CANVAS_SIZE.x, CANVAS_SIZE.y)
-            .map_err(|e| GameError::Sdl(e.to_string()))?;
-        map_texture.set_scale_mode(ScaleMode::Nearest);
-
-        // Load atlas and create map texture
-        let atlas_bytes = get_asset_bytes(Asset::Atlas)?;
-        let atlas_texture = texture_creator.load_texture_bytes(&atlas_bytes).map_err(|e| {
-            if e.to_string().contains("format") || e.to_string().contains("unsupported") {
-                GameError::Texture(crate::error::TextureError::InvalidFormat(format!(
-                    "Unsupported texture format: {e}"
-                )))
-            } else {
-                GameError::Texture(crate::error::TextureError::LoadFailed(e.to_string()))
-            }
-        })?;
-
-        let atlas_mapper = AtlasMapper {
-            frames: ATLAS_FRAMES.into_iter().map(|(k, v)| (k.to_string(), *v)).collect(),
-        };
-        let mut atlas = SpriteAtlas::new(atlas_texture, atlas_mapper);
-
-        // Create map tiles
-        let mut map_tiles = Vec::with_capacity(35);
-        for i in 0..35 {
-            let tile_name = format!("maze/tiles/{}.png", i);
-            let tile = atlas.get_tile(&tile_name).unwrap();
-            map_tiles.push(tile);
-        }
-
-        // Render map to texture
-        canvas
-            .with_texture_canvas(&mut map_texture, |map_canvas| {
-                MapRenderer::render_map(map_canvas, &mut atlas, &mut map_tiles);
-            })
-            .map_err(|e| GameError::Sdl(e.to_string()))?;
-
-        let map = Map::new(constants::RAW_BOARD)?;
-        let pacman_start_node = map.start_positions.pacman;
-
-        let mut textures = [None, None, None, None];
-        let mut stopped_textures = [None, None, None, None];
-
-        for direction in Direction::DIRECTIONS {
-            let moving_prefix = match direction {
-                Direction::Up => "pacman/up",
-                Direction::Down => "pacman/down",
-                Direction::Left => "pacman/left",
-                Direction::Right => "pacman/right",
-            };
-            let moving_tiles = vec![
-                SpriteAtlas::get_tile(&atlas, &format!("{moving_prefix}_a.png"))
-                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_a.png"))))?,
-                SpriteAtlas::get_tile(&atlas, &format!("{moving_prefix}_b.png"))
-                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_b.png"))))?,
-                SpriteAtlas::get_tile(&atlas, "pacman/full.png")
-                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
-            ];
-
-            let stopped_tiles = vec![SpriteAtlas::get_tile(&atlas, &format!("{moving_prefix}_b.png"))
-                .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound(format!("{moving_prefix}_b.png"))))?];
-
-            textures[direction.as_usize()] = Some(AnimatedTexture::new(moving_tiles, 0.08)?);
-            stopped_textures[direction.as_usize()] = Some(AnimatedTexture::new(stopped_tiles, 0.1)?);
-        }
-
-        let player = PlayerBundle {
-            player: PlayerControlled,
-            position: Position::AtNode(pacman_start_node),
-            velocity: Velocity {
-                direction: Direction::Up,
-                next_direction: None,
-                speed: Some(1.0),
-            },
-            sprite: Renderable {
-                sprite: SpriteAtlas::get_tile(&atlas, "pacman/full.png")
-                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
-                layer: 0,
-            },
-            directional_animated: DirectionalAnimated {
-                textures,
-                stopped_textures,
-            },
-        };
-
-        world.insert_non_send_resource(atlas);
-        world.insert_non_send_resource(event_pump);
-        world.insert_non_send_resource(canvas);
-        world.insert_non_send_resource(BackbufferResource(backbuffer));
-        world.insert_non_send_resource(MapTextureResource(map_texture));
-
-        world.insert_resource(map);
-        world.insert_resource(GlobalState { exit: false });
-        world.insert_resource(Bindings::default());
-        world.insert_resource(DeltaTime(0f32));
-
-        world.add_observer(|event: Trigger<GameEvent>, mut state: ResMut<GlobalState>| match *event {
-            GameEvent::Command(command) => match command {
-                GameCommand::Exit => {
-                    state.exit = true;
-                }
-                _ => {}
-            },
-        });
-
-        schedule.add_systems(
-            (
-                handle_input,
-                interact_system,
-                movement_system,
-                directional_render_system,
-                render_system,
-            )
-                .chain(),
-        );
-
-        // Spawn player
-        world.spawn(player);
-
-        Ok(Game { world, schedule })
-    }
-
-    // fn handle_command(&mut self, command: crate::input::commands::GameCommand) {
-    //     use crate::input::commands::GameCommand;
-    //     match command {
-    //         GameCommand::MovePlayer(direction) => {
-    //             self.state.pacman.set_next_direction(direction);
-    //         }
-    //         GameCommand::ToggleDebug => {
-    //             self.toggle_debug_mode();
-    //         }
-    //         GameCommand::MuteAudio => {
-    //             let is_muted = self.state.audio.is_muted();
-    //             self.state.audio.set_mute(!is_muted);
-    //         }
-    //         GameCommand::ResetLevel => {
-    //             if let Err(e) = self.reset_game_state() {
-    //                 tracing::error!("Failed to reset game state: {}", e);
-    //             }
-    //         }
-    //         GameCommand::TogglePause => {
-    //             self.state.paused = !self.state.paused;
-    //         }
-    //         GameCommand::Exit => {}
-    //     }
-    // }
-
-    // fn process_events(&mut self) {
-    //     while let Some(event) = self.state.event_queue.pop_front() {
-    //         match event {
-    //             GameEvent::Command(command) => self.handle_command(command),
-    //         }
-    //     }
-    // }
-
-    // /// Resets the game state, randomizing ghost positions and resetting Pac-Man
-    // fn reset_game_state(&mut self) -> GameResult<()> {
-    //     let pacman_start_node = self.state.map.start_positions.pacman;
-    //     self.state.pacman = Pacman::new(&self.state.map.graph, pacman_start_node, &self.state.atlas)?;
-
-    //     // Reset items
-    //     self.state.items = self.state.map.generate_items(&self.state.atlas)?;
-
-    //     // Randomize ghost positions
-    //     let ghost_types = [GhostType::Blinky, GhostType::Pinky, GhostType::Inky, GhostType::Clyde];
-    //     let mut rng = SmallRng::from_os_rng();
-
-    //     for (i, ghost) in self.state.ghosts.iter_mut().enumerate() {
-    //         let random_node = rng.random_range(0..self.state.map.graph.node_count());
-    //         *ghost = Ghost::new(&self.state.map.graph, random_node, ghost_types[i], &self.state.atlas)?;
-    //     }
-
-    //     // Reset collision system
-    //     self.state.collision_system = CollisionSystem::default();
-
-    //     // Re-register Pac-Man
-    //     self.state.pacman_id = self.state.collision_system.register_entity(self.state.pacman.position());
-
-    //     // Re-register items
-    //     self.state.item_ids.clear();
-    //     for item in &self.state.items {
-    //         let item_id = self.state.collision_system.register_entity(item.position());
-    //         self.state.item_ids.push(item_id);
-    //     }
-
-    //     // Re-register ghosts
-    //     self.state.ghost_ids.clear();
-    //     for ghost in &self.state.ghosts {
-    //         let ghost_id = self.state.collision_system.register_entity(ghost.position());
-    //         self.state.ghost_ids.push(ghost_id);
-    //     }
-
-    //     Ok(())
-    // }
-
-    /// Ticks the game state.
-    ///
-    /// Returns true if the game should exit.
-    pub fn tick(&mut self, dt: f32) -> bool {
-        self.world.insert_resource(DeltaTime(dt));
-
-        // Run all systems
-        self.schedule.run(&mut self.world);
-
-        let state = self
-            .world
-            .get_resource::<GlobalState>()
-            .expect("GlobalState could not be acquired");
-
-        return state.exit;
-
-        // // Process any events that have been posted (such as unpausing)
-        // self.process_events();
-
-        // // If the game is paused, we don't need to do anything beyond returning
-        // if self.state.paused {
-        //     return false;
-        // }
-
-        // self.schedule.run(&mut self.world);
-
-        // self.state.pacman.tick(dt, &self.state.map.graph);
-
-        // // Update all ghosts
-        // for ghost in &mut self.state.ghosts {
-        //     ghost.tick(dt, &self.state.map.graph);
-        // }
-
-        // // Update collision system positions
-        // self.update_collision_positions();
-
-        // // Check for collisions
-        // self.check_collisions();
-    }
-
-    // /// Toggles the debug mode on and off.
-    // ///
-    // /// When debug mode is enabled, the game will render additional information
-    // /// that is useful for debugging, such as the collision grid and entity paths.
-    // pub fn toggle_debug_mode(&mut self) {
-    //     self.state.debug_mode = !self.state.debug_mode;
-    // }
-
-    // fn update_collision_positions(&mut self) {
-    //     // Update Pac-Man's position
-    //     self.state
-    //         .collision_system
-    //         .update_position(self.state.pacman_id, self.state.pacman.position());
-
-    //     // Update ghost positions
-    //     for (ghost, &ghost_id) in self.state.ghosts.iter().zip(&self.state.ghost_ids) {
-    //         self.state.collision_system.update_position(ghost_id, ghost.position());
-    //     }
-    // }
-
-    // fn check_collisions(&mut self) {
-    //     // Check Pac-Man vs Items
-    //     let potential_collisions = self
-    //         .state
-    //         .collision_system
-    //         .potential_collisions(&self.state.pacman.position());
-
-    //     for entity_id in potential_collisions {
-    //         if entity_id != self.state.pacman_id {
-    //             // Check if this is an item collision
-    //             if let Some(item_index) = self.find_item_by_id(entity_id) {
-    //                 let item = &mut self.state.items[item_index];
-    //                 if !item.is_collected() {
-    //                     item.collect();
-    //                     self.state.score += item.get_score();
-    //                     self.state.audio.eat();
-
-    //                     // Handle energizer effects
-    //                     if matches!(item.item_type, crate::entity::item::ItemType::Energizer) {
-    //                         // TODO: Make ghosts frightened
-    //                         tracing::info!("Energizer collected! Ghosts should become frightened.");
-    //                     }
-    //                 }
-    //             }
-
-    //             // Check if this is a ghost collision
-    //             if let Some(_ghost_index) = self.find_ghost_by_id(entity_id) {
-    //                 // TODO: Handle Pac-Man being eaten by ghost
-    //                 tracing::info!("Pac-Man collided with ghost!");
-    //             }
-    //         }
-    //     }
-    // }
-
-    // fn find_item_by_id(&self, entity_id: EntityId) -> Option<usize> {
-    //     self.state.item_ids.iter().position(|&id| id == entity_id)
-    // }
-
-    // fn find_ghost_by_id(&self, entity_id: EntityId) -> Option<usize> {
-    //     self.state.ghost_ids.iter().position(|&id| id == entity_id)
-    // }
-
-    // pub fn draw<T: sdl2::render::RenderTarget>(&mut self, canvas: &mut Canvas<T>, backbuffer: &mut Texture) -> GameResult<()> {
-    //     // Only render the map texture once and cache it
-    //     if !self.state.map_rendered {
-    //         let mut map_texture = self
-    //             .state
-    //             .texture_creator
-    //             .create_texture_target(None, constants::CANVAS_SIZE.x, constants::CANVAS_SIZE.y)
-    //             .map_err(|e| crate::error::GameError::Sdl(e.to_string()))?;
-
-    //         canvas
-    //             .with_texture_canvas(&mut map_texture, |map_canvas| {
-    //                 let mut map_tiles = Vec::with_capacity(35);
-    //                 for i in 0..35 {
-    //                     let tile_name = format!("maze/tiles/{}.png", i);
-    //                     let tile = SpriteAtlas::get_tile(&self.state.atlas, &tile_name).unwrap();
-    //                     map_tiles.push(tile);
-    //                 }
-    //                 MapRenderer::render_map(map_canvas, &mut self.state.atlas, &mut map_tiles);
-    //             })
-    //             .map_err(|e| crate::error::GameError::Sdl(e.to_string()))?;
-    //         self.state.map_texture = Some(map_texture);
-    //         self.state.map_rendered = true;
-    //     }
-
-    //     canvas.set_draw_color(Color::BLACK);
-    //     canvas.clear();
-    //     if let Some(ref map_texture) = self.state.map_texture {
-    //         canvas.copy(map_texture, None, None).unwrap();
-    //     }
-
-    //     // Render all items
-    //     for item in &self.state.items {
-    //         if let Err(e) = item.render(canvas, &mut self.state.atlas, &self.state.map.graph) {
-    //             tracing::error!("Failed to render item: {}", e);
-    //         }
-    //     }
-
-    //     // Render all ghosts
-    //     for ghost in &self.state.ghosts {
-    //         if let Err(e) = ghost.render(canvas, &mut self.state.atlas, &self.state.map.graph) {
-    //             tracing::error!("Failed to render ghost: {}", e);
-    //         }
-    //     }
-
-    //     if let Err(e) = self.state.pacman.render(canvas, &mut self.state.atlas, &self.state.map.graph) {
-    //         tracing::error!("Failed to render pacman: {}", e);
-    //     }
-
-    //     if self.state.debug_mode {
-    //         if let Err(e) =
-    //             self.state
-    //                 .map
-    //                 .debug_render_with_cursor(canvas, &mut self.state.text_texture, &mut self.state.atlas, cursor_pos)
-    //         {
-    //             tracing::error!("Failed to render debug cursor: {}", e);
-    //         }
-    //         self.render_pathfinding_debug(canvas)?;
-    //     }
-    //     self.draw_hud(canvas)?;
-    //     canvas.present();
-
-    //     Ok(())
-    // }
-
-    // /// Renders pathfinding debug lines from each ghost to Pac-Man.
-    // ///
-    // /// Each ghost's path is drawn in its respective color with a small offset
-    // /// to prevent overlapping lines.
-    // fn render_pathfinding_debug<T: sdl2::render::RenderTarget>(&self, canvas: &mut Canvas<T>) -> GameResult<()> {
-    //     let pacman_node = self.state.pacman.current_node_id();
-
-    //     for ghost in self.state.ghosts.iter() {
-    //         if let Ok(path) = ghost.calculate_path_to_target(&self.state.map.graph, pacman_node) {
-    //             if path.len() < 2 {
-    //                 continue; // Skip if path is too short
-    //             }
-
-    //             // Set the ghost's color
-    //             canvas.set_draw_color(ghost.debug_color());
-
-    //             // Calculate offset based on ghost index to prevent overlapping lines
-    //             // let offset = (i as f32) * 2.0 - 3.0; // Offset range: -3.0 to 3.0
-
-    //             // Calculate a consistent offset direction for the entire path
-    //             // let first_node = self.map.graph.get_node(path[0]).unwrap();
-    //             // let last_node = self.map.graph.get_node(path[path.len() - 1]).unwrap();
-
-    //             // Use the overall direction from start to end to determine the perpendicular offset
-    //             let offset = match ghost.ghost_type {
-    //                 GhostType::Blinky => glam::Vec2::new(0.25, 0.5),
-    //                 GhostType::Pinky => glam::Vec2::new(-0.25, -0.25),
-    //                 GhostType::Inky => glam::Vec2::new(0.5, -0.5),
-    //                 GhostType::Clyde => glam::Vec2::new(-0.5, 0.25),
-    //             } * 5.0;
-
-    //             // Calculate offset positions for all nodes using the same perpendicular direction
-    //             let mut offset_positions = Vec::new();
-    //             for &node_id in &path {
-    //                 let node = self
-    //                     .state
-    //                     .map
-    //                     .graph
-    //                     .get_node(node_id)
-    //                     .ok_or(crate::error::EntityError::NodeNotFound(node_id))?;
-    //                 let pos = node.position + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-    //                 offset_positions.push(pos + offset);
-    //             }
-
-    //             // Draw lines between the offset positions
-    //             for window in offset_positions.windows(2) {
-    //                 if let (Some(from), Some(to)) = (window.first(), window.get(1)) {
-    //                     // Skip if the distance is too far (used for preventing lines between tunnel portals)
-    //                     if from.distance_squared(*to) > (crate::constants::CELL_SIZE * 16).pow(2) as f32 {
-    //                         continue;
-    //                     }
-
-    //                     // Draw the line
-    //                     canvas
-    //                         .draw_line((from.x as i32, from.y as i32), (to.x as i32, to.y as i32))
-    //                         .map_err(|e| crate::error::GameError::Sdl(e.to_string()))?;
-    //                 }
-    //             }
-    //         }
-    //     }
-
-    //     Ok(())
-    // }
-
-    // fn draw_hud<T: sdl2::render::RenderTarget>(&mut self, canvas: &mut Canvas<T>) -> GameResult<()> {
-    //     let lives = 3;
-    //     let score_text = format!("{:02}", self.state.score);
-    //     let x_offset = 4;
-    //     let y_offset = 2;
-    //     let lives_offset = 3;
-    //     let score_offset = 7 - (score_text.len() as i32);
-    //     self.state.text_texture.set_scale(1.0);
-    //     if let Err(e) = self.state.text_texture.render(
-    //         canvas,
-    //         &mut self.state.atlas,
-    //         &format!("{lives}UP   HIGH SCORE   "),
-    //         glam::UVec2::new(8 * lives_offset as u32 + x_offset, y_offset),
-    //     ) {
-    //         tracing::error!("Failed to render HUD text: {}", e);
-    //     }
-    //     if let Err(e) = self.state.text_texture.render(
-    //         canvas,
-    //         &mut self.state.atlas,
-    //         &score_text,
-    //         glam::UVec2::new(8 * score_offset as u32 + x_offset, 8 + y_offset),
-    //     ) {
-    //         tracing::error!("Failed to render score text: {}", e);
-    //     }
-
-    //     // Display FPS information in top-left corner
-    //     // let fps_text = format!("FPS: {:.1} (1s) / {:.1} (10s)", self.fps_1s, self.fps_10s);
-    //     // self.render_text_on(
-    //     //     canvas,
-    //     //     &*texture_creator,
-    //     //     &fps_text,
-    //     //     IVec2::new(10, 10),
-    //     //     Color::RGB(255, 255, 0), // Yellow color for FPS display
-    //     // );
-
-    //     Ok(())
-    // }
-}

src/game/state.rs

@@ -1,153 +0,0 @@
-// use std::collections::VecDeque;
-
-// use sdl2::{
-//     image::LoadTexture,
-//     render::{Texture, TextureCreator},
-//     video::WindowContext,
-// };
-// use smallvec::SmallVec;
-
-// use crate::{
-//     asset::{get_asset_bytes, Asset},
-//     audio::Audio,
-//     constants::RAW_BOARD,
-//     entity::{
-//         collision::{Collidable, CollisionSystem, EntityId},
-//         ghost::{Ghost, GhostType},
-//         item::Item,
-//         pacman::Pacman,
-//     },
-//     error::{GameError, GameResult, TextureError},
-//     game::events::GameEvent,
-//     map::builder::Map,
-//     texture::{
-//         sprite::{AtlasMapper, SpriteAtlas},
-//         text::TextTexture,
-//     },
-// };
-
-// include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
-
-// /// The `GameState` struct holds all the essential data for the game.
-// ///
-// /// This includes the score, map, entities (Pac-Man, ghosts, items),
-// /// collision system, and rendering resources. By centralizing the game's state,
-// /// we can cleanly separate it from the game's logic, making it easier to manage
-// /// and reason about.
-// pub struct GameState {
-//     pub paused: bool,
-
-//     pub score: u32,
-//     pub map: Map,
-//     pub pacman: Pacman,
-//     pub pacman_id: EntityId,
-//     pub ghosts: SmallVec<[Ghost; 4]>,
-//     pub ghost_ids: SmallVec<[EntityId; 4]>,
-//     pub items: Vec<Item>,
-//     pub item_ids: Vec<EntityId>,
-//     pub debug_mode: bool,
-//     pub event_queue: VecDeque<GameEvent>,
-
-//     // Collision system
-//     pub(crate) collision_system: CollisionSystem,
-
-//     // Rendering resources
-//     pub(crate) atlas: SpriteAtlas,
-//     pub(crate) text_texture: TextTexture,
-
-//     // Audio
-//     pub audio: Audio,
-
-//     // Map texture pre-rendering
-//     pub(crate) map_texture: Option<Texture<'static>>,
-//     pub(crate) map_rendered: bool,
-//     pub(crate) texture_creator: &'static TextureCreator<WindowContext>,
-// }
-
-// impl GameState {
-//     /// Creates a new `GameState` by initializing all the game's data.
-//     ///
-//     /// This function sets up the map, Pac-Man, ghosts, items, collision system,
-//     /// and all rendering resources required to start the game. It returns a `GameResult`
-//     /// to handle any potential errors during initialization.
-//     pub fn new(texture_creator: &'static TextureCreator<WindowContext>) -> GameResult<Self> {
-//         let map = Map::new(RAW_BOARD)?;
-
-//         let start_node = map.start_positions.pacman;
-
-//         let atlas_bytes = get_asset_bytes(Asset::Atlas)?;
-//         let atlas_texture = texture_creator.load_texture_bytes(&atlas_bytes).map_err(|e| {
-//             if e.to_string().contains("format") || e.to_string().contains("unsupported") {
-//                 GameError::Texture(TextureError::InvalidFormat(format!("Unsupported texture format: {e}")))
-//             } else {
-//                 GameError::Texture(TextureError::LoadFailed(e.to_string()))
-//             }
-//         })?;
-
-//         let atlas_mapper = AtlasMapper {
-//             frames: ATLAS_FRAMES.into_iter().map(|(k, v)| (k.to_string(), *v)).collect(),
-//         };
-//         let atlas = SpriteAtlas::new(atlas_texture, atlas_mapper);
-
-//         let text_texture = TextTexture::new(1.0);
-//         let audio = Audio::new();
-//         let pacman = Pacman::new(&map.graph, start_node, &atlas)?;
-
-//         // Generate items (pellets and energizers)
-//         let items = map.generate_items(&atlas)?;
-
-//         // Initialize collision system
-//         let mut collision_system = CollisionSystem::default();
-
-//         // Register Pac-Man
-//         let pacman_id = collision_system.register_entity(pacman.position());
-
-//         // Register items
-//         let item_ids = items
-//             .iter()
-//             .map(|item| collision_system.register_entity(item.position()))
-//             .collect();
-
-//         // Create and register ghosts
-//         let ghosts = [GhostType::Blinky, GhostType::Pinky, GhostType::Inky, GhostType::Clyde]
-//             .iter()
-//             .zip(
-//                 [
-//                     map.start_positions.blinky,
-//                     map.start_positions.pinky,
-//                     map.start_positions.inky,
-//                     map.start_positions.clyde,
-//                 ]
-//                 .iter(),
-//             )
-//             .map(|(ghost_type, start_node)| Ghost::new(&map.graph, *start_node, *ghost_type, &atlas))
-//             .collect::<GameResult<SmallVec<[_; 4]>>>()?;
-
-//         // Register ghosts
-//         let ghost_ids = ghosts
-//             .iter()
-//             .map(|ghost| collision_system.register_entity(ghost.position()))
-//             .collect();
-
-//         Ok(Self {
-//             paused: false,
-//             map,
-//             atlas,
-//             pacman,
-//             pacman_id,
-//             ghosts,
-//             ghost_ids,
-//             items,
-//             item_ids,
-//             text_texture,
-//             audio,
-//             score: 0,
-//             debug_mode: false,
-//             collision_system,
-//             map_texture: None,
-//             map_rendered: false,
-//             texture_creator,
-//             event_queue: VecDeque::new(),
-//         })
-//     }
-// }

src/helpers.rs

@@ -1,10 +0,0 @@
-use glam::{IVec2, UVec2};
-use sdl2::rect::Rect;
-
-pub fn centered_with_size(pixel_pos: IVec2, size: UVec2) -> Rect {
-    // Ensure the position doesn't cause integer overflow when centering
-    let x = pixel_pos.x.saturating_sub(size.x as i32 / 2);
-    let y = pixel_pos.y.saturating_sub(size.y as i32 / 2);
-
-    Rect::new(x, y, size.x, size.y)
-}

src/input/commands.rs

@@ -1,11 +0,0 @@
-use crate::entity::direction::Direction;
-
-#[derive(Debug, Clone, Copy)]
-pub enum GameCommand {
-    MovePlayer(Direction),
-    Exit,
-    TogglePause,
-    ToggleDebug,
-    MuteAudio,
-    ResetLevel,
-}

src/input/mod.rs

@@ -1,61 +0,0 @@
-use std::collections::HashMap;
-
-use bevy_ecs::{
-    event::EventWriter,
-    resource::Resource,
-    system::{Commands, NonSendMut, Res},
-};
-use sdl2::{event::Event, keyboard::Keycode, EventPump};
-
-use crate::{entity::direction::Direction, game::events::GameEvent, input::commands::GameCommand};
-
-pub mod commands;
-
-#[derive(Debug, Clone, Resource)]
-pub struct Bindings {
-    key_bindings: HashMap<Keycode, GameCommand>,
-}
-
-impl Default for Bindings {
-    fn default() -> Self {
-        let mut key_bindings = HashMap::new();
-
-        // Player movement
-        key_bindings.insert(Keycode::Up, GameCommand::MovePlayer(Direction::Up));
-        key_bindings.insert(Keycode::W, GameCommand::MovePlayer(Direction::Up));
-        key_bindings.insert(Keycode::Down, GameCommand::MovePlayer(Direction::Down));
-        key_bindings.insert(Keycode::S, GameCommand::MovePlayer(Direction::Down));
-        key_bindings.insert(Keycode::Left, GameCommand::MovePlayer(Direction::Left));
-        key_bindings.insert(Keycode::A, GameCommand::MovePlayer(Direction::Left));
-        key_bindings.insert(Keycode::Right, GameCommand::MovePlayer(Direction::Right));
-        key_bindings.insert(Keycode::D, GameCommand::MovePlayer(Direction::Right));
-
-        // Game actions
-        key_bindings.insert(Keycode::P, GameCommand::TogglePause);
-        key_bindings.insert(Keycode::Space, GameCommand::ToggleDebug);
-        key_bindings.insert(Keycode::M, GameCommand::MuteAudio);
-        key_bindings.insert(Keycode::R, GameCommand::ResetLevel);
-        key_bindings.insert(Keycode::Escape, GameCommand::Exit);
-        key_bindings.insert(Keycode::Q, GameCommand::Exit);
-
-        Self { key_bindings }
-    }
-}
-
-pub fn handle_input(bindings: Res<Bindings>, mut writer: EventWriter<GameEvent>, mut pump: NonSendMut<&'static mut EventPump>) {
-    for event in pump.poll_iter() {
-        match event {
-            Event::Quit { .. } => {
-                writer.write(GameEvent::Command(GameCommand::Exit));
-            }
-            Event::KeyDown { keycode: Some(key), .. } => {
-                let command = bindings.key_bindings.get(&key).copied();
-                if let Some(command) = command {
-                    tracing::info!("triggering command: {:?}", command);
-                    writer.write(GameEvent::Command(command));
-                }
-            }
-            _ => {}
-        }
-    }
-}

src/lib.rs

@@ -4,12 +4,10 @@ pub mod app;
 pub mod asset;
 pub mod audio;
 pub mod constants;
-pub mod ecs;
-pub mod entity;
 pub mod error;
+pub mod events;
 pub mod game;
-pub mod helpers;
-pub mod input;
 pub mod map;
 pub mod platform;
+pub mod systems;
 pub mod texture;

src/main.rs

@@ -2,22 +2,18 @@
 
 use crate::{app::App, constants::LOOP_TIME};
 use tracing::info;
-use tracing_error::ErrorLayer;
-use tracing_subscriber::layer::SubscriberExt;
 
 mod app;
 mod asset;
 mod audio;
 mod constants;
 
-mod ecs;
-mod entity;
 mod error;
+mod events;
 mod game;
-mod helpers;
-mod input;
 mod map;
 mod platform;
+mod systems;
 mod texture;
 
 /// The main entry point of the application.
@@ -25,14 +21,22 @@ mod texture;
 /// This function initializes SDL, the window, the game state, and then enters
 /// the main game loop.
 pub fn main() {
-    // Setup tracing
-    let subscriber = tracing_subscriber::fmt()
-        .with_ansi(cfg!(not(target_os = "emscripten")))
-        .with_max_level(tracing::Level::DEBUG)
-        .finish()
-        .with(ErrorLayer::default());
+    // Setup buffered tracing subscriber that will buffer logs until console is ready
+    let switchable_writer = platform::tracing_buffer::setup_switchable_subscriber();
 
-    tracing::subscriber::set_global_default(subscriber).expect("Could not set global default");
+    // Log early to show buffering is working
+    tracing::debug!("Tracing subscriber initialized with buffering - logs will be buffered until console is ready");
+
+    // Initialize platform-specific console
+    tracing::debug!("Starting console initialization...");
+    platform::get_platform().init_console().expect("Could not initialize console");
+    tracing::debug!("Console initialization completed");
+
+    // Now that console is initialized, flush buffered logs and switch to direct output
+    tracing::debug!("Switching to direct logging mode and flushing buffer...");
+    if let Err(e) = switchable_writer.switch_to_direct_mode() {
+        tracing::warn!("Failed to flush buffered logs to console: {}", e);
+    }
 
     let mut app = App::new().expect("Could not create app");
 

src/map/builder.rs

@@ -1,38 +1,48 @@
 //! Map construction and building functionality.
-
-use crate::constants::{MapTile, BOARD_CELL_SIZE, CELL_SIZE, RAW_BOARD};
-use crate::ecs::NodeId;
-use crate::entity::direction::Direction;
-use crate::entity::graph::{EdgePermissions, Graph, Node};
+use crate::constants::{MapTile, BOARD_CELL_SIZE, CELL_SIZE};
+use crate::map::direction::Direction;
+use crate::map::graph::{Graph, Node, TraversalFlags};
 use crate::map::parser::MapTileParser;
-use crate::map::render::MapRenderer;
-use crate::texture::sprite::{Sprite, SpriteAtlas};
+use crate::systems::movement::NodeId;
 use bevy_ecs::resource::Resource;
-use glam::{IVec2, Vec2};
-use sdl2::render::{Canvas, RenderTarget};
+use glam::{I8Vec2, IVec2, Vec2};
 use std::collections::{HashMap, VecDeque};
 use tracing::debug;
 
 use crate::error::{GameResult, MapError};
 
-/// The starting positions of the entities in the game.
+/// Predefined spawn locations for all game entities within the navigation graph.
+///
+/// These positions are determined during map parsing and graph construction.
 pub struct NodePositions {
+    /// Pac-Man's starting position in the lower section of the maze
     pub pacman: NodeId,
+    /// Blinky starts at the ghost house entrance
     pub blinky: NodeId,
+    /// Pinky starts in the left area of the ghost house
     pub pinky: NodeId,
+    /// Inky starts in the right area of the ghost house
     pub inky: NodeId,
+    /// Clyde starts in the center of the ghost house
     pub clyde: NodeId,
 }
 
-/// The main map structure containing the game board and navigation graph.
+/// Complete maze representation combining visual layout with navigation pathfinding.
+///
+/// Transforms the ASCII board layout into a fully connected navigation graph
+/// while preserving tile-based collision and rendering data. The graph enables
+/// smooth entity movement with proper pathfinding, while the grid mapping allows
+/// efficient spatial queries and debug visualization.
 #[derive(Resource)]
 pub struct Map {
-    /// The node map for entity movement.
+    /// Connected graph of navigable positions.
     pub graph: Graph,
-    /// A mapping from grid positions to node IDs.
-    pub grid_to_node: HashMap<IVec2, NodeId>,
-    /// A mapping of the starting positions of the entities.
+    /// Bidirectional mapping between 2D grid coordinates and graph node indices.
+    pub grid_to_node: HashMap<I8Vec2, NodeId>,
+    /// Predetermined spawn locations for all game entities
     pub start_positions: NodePositions,
+    /// 2D array of tile types for collision detection and rendering
+    tiles: [[MapTile; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize],
 }
 
 impl Map {
@@ -66,8 +76,8 @@ impl Map {
         let mut queue = VecDeque::new();
         queue.push_back(start_pos);
         let pos = Vec2::new(
-            (start_pos.x * CELL_SIZE as i32) as f32,
-            (start_pos.y * CELL_SIZE as i32) as f32,
+            (start_pos.x as i32 * CELL_SIZE as i32) as f32,
+            (start_pos.y as i32 * CELL_SIZE as i32) as f32,
         ) + cell_offset;
         let node_id = graph.add_node(Node { position: pos });
         grid_to_node.insert(start_pos, node_id);
@@ -79,9 +89,9 @@ impl Map {
 
                 // Skip if the new position is out of bounds
                 if new_position.x < 0
-                    || new_position.x >= BOARD_CELL_SIZE.x as i32
+                    || new_position.x as i32 >= BOARD_CELL_SIZE.x as i32
                     || new_position.y < 0
-                    || new_position.y >= BOARD_CELL_SIZE.y as i32
+                    || new_position.y as i32 >= BOARD_CELL_SIZE.y as i32
                 {
                     continue;
                 }
@@ -98,8 +108,8 @@ impl Map {
                 ) {
                     // Add the new position to the graph/queue
                     let pos = Vec2::new(
-                        (new_position.x * CELL_SIZE as i32) as f32,
-                        (new_position.y * CELL_SIZE as i32) as f32,
+                        (new_position.x as i32 * CELL_SIZE as i32) as f32,
+                        (new_position.y as i32 * CELL_SIZE as i32) as f32,
                     ) + cell_offset;
                     let new_node_id = graph.add_node(Node { position: pos });
                     grid_to_node.insert(new_position, new_node_id);
@@ -122,7 +132,7 @@ impl Map {
         for (grid_pos, &node_id) in &grid_to_node {
             for dir in Direction::DIRECTIONS {
                 // If the node doesn't have an edge in this direction, look for a neighbor in that direction
-                if graph.adjacency_list[node_id].get(dir).is_none() {
+                if graph.adjacency_list[node_id as usize].get(dir).is_none() {
                     let neighbor = grid_pos + dir.as_ivec2();
                     // If the neighbor exists, connect the node to it
                     if let Some(&neighbor_id) = grid_to_node.get(&neighbor) {
@@ -153,67 +163,45 @@ impl Map {
             graph,
             grid_to_node,
             start_positions,
+            tiles: map,
         })
     }
 
-    /// Generates Item entities for pellets and energizers from the parsed map.
-    // pub fn generate_items(&self, atlas: &SpriteAtlas) -> GameResult<Vec<Item>> {
-    //     // Pre-load sprites to avoid repeated texture lookups
-    //     let pellet_sprite = SpriteAtlas::get_tile(atlas, "maze/pellet.png")
-    //         .ok_or_else(|| MapError::InvalidConfig("Pellet texture not found".to_string()))?;
-    //     let energizer_sprite = SpriteAtlas::get_tile(atlas, "maze/energizer.png")
-    //         .ok_or_else(|| MapError::InvalidConfig("Energizer texture not found".to_string()))?;
-
-    //     // Pre-allocate with estimated capacity (typical Pac-Man maps have ~240 pellets + 4 energizers)
-    //     let mut items = Vec::with_capacity(250);
-
-    //     // Parse the raw board once
-    //     let parsed_map = MapTileParser::parse_board(RAW_BOARD)?;
-    //     let map = parsed_map.tiles;
-
-    //     // Iterate through the map and collect items more efficiently
-    //     for (x, row) in map.iter().enumerate() {
-    //         for (y, tile) in row.iter().enumerate() {
-    //             match tile {
-    //                 MapTile::Pellet | MapTile::PowerPellet => {
-    //                     let grid_pos = IVec2::new(x as i32, y as i32);
-    //                     if let Some(&node_id) = self.grid_to_node.get(&grid_pos) {
-    //                         let (item_type, sprite) = match tile {
-    //                             MapTile::Pellet => (ItemType::Pellet, Sprite::new(pellet_sprite)),
-    //                             MapTile::PowerPellet => (ItemType::Energizer, Sprite::new(energizer_sprite)),
-    //                             _ => unreachable!(), // We already filtered for these types
-    //                         };
-    //                         items.push(Item::new(node_id, item_type, sprite));
-    //                     }
-    //                 }
-    //                 _ => {}
-    //             }
-    //         }
-    //     }
-
-    //     Ok(items)
-    // }
-
-    /// Renders a debug visualization with cursor-based highlighting.
-    ///
-    /// This function provides interactive debugging by highlighting the nearest node
-    /// to the cursor, showing its ID, and highlighting its connections.
-    pub fn debug_render_with_cursor<T: RenderTarget>(
-        &self,
-        canvas: &mut Canvas<T>,
-        text_renderer: &mut crate::texture::text::TextTexture,
-        atlas: &mut SpriteAtlas,
-        cursor_pos: glam::Vec2,
-    ) -> GameResult<()> {
-        MapRenderer::debug_render_with_cursor(&self.graph, canvas, text_renderer, atlas, cursor_pos)
+    pub fn iter_nodes(&self) -> impl Iterator<Item = (&NodeId, &MapTile)> {
+        self.grid_to_node.iter().map(move |(pos, node_id)| {
+            let tile = &self.tiles[pos.x as usize][pos.y as usize];
+            (node_id, tile)
+        })
     }
 
-    /// Builds the house structure in the graph.
+    /// Returns the `MapTile` at a given node id.
+    pub fn tile_at_node(&self, node_id: NodeId) -> Option<MapTile> {
+        // reverse lookup: node -> grid
+        for (grid_pos, id) in &self.grid_to_node {
+            if *id == node_id {
+                return Some(self.tiles[grid_pos.x as usize][grid_pos.y as usize]);
+            }
+        }
+        None
+    }
+
+    /// Constructs the ghost house area with restricted access and internal navigation.
+    ///
+    /// Creates a multi-level ghost house with entrance control, internal movement
+    /// areas, and starting positions for each ghost. The house entrance uses
+    /// ghost-only traversal flags to prevent Pac-Man from entering while allowing
+    /// ghosts to exit. Internal nodes are arranged in vertical lines to provide
+    /// distinct starting areas for each ghost character.
+    ///
+    /// # Returns
+    ///
+    /// Tuple of node IDs: (house_entrance, left_center, center_center, right_center)
+    /// representing the four key positions within the ghost house structure.
     fn build_house(
         graph: &mut Graph,
-        grid_to_node: &HashMap<IVec2, NodeId>,
-        house_door: &[Option<IVec2>; 2],
-    ) -> GameResult<(usize, usize, usize, usize)> {
+        grid_to_node: &HashMap<I8Vec2, NodeId>,
+        house_door: &[Option<I8Vec2>; 2],
+    ) -> GameResult<(NodeId, NodeId, NodeId, NodeId)> {
         // Calculate the position of the house entrance node
         let (house_entrance_node_id, house_entrance_node_position) = {
             // Translate the grid positions to the actual node ids
@@ -234,10 +222,13 @@ impl Map {
 
             // Calculate the position of the house node
             let (node_id, node_position) = {
-                let left_pos = graph.get_node(*left_node).ok_or(MapError::NodeNotFound(*left_node))?.position;
+                let left_pos = graph
+                    .get_node(*left_node)
+                    .ok_or(MapError::NodeNotFound(*left_node as usize))?
+                    .position;
                 let right_pos = graph
                     .get_node(*right_node)
-                    .ok_or(MapError::NodeNotFound(*right_node))?
+                    .ok_or(MapError::NodeNotFound(*right_node as usize))?
                     .position;
                 let house_node = graph.add_node(Node {
                     position: left_pos.lerp(right_pos, 0.5),
@@ -261,10 +252,10 @@ impl Map {
             // Place the nodes at, above, and below the center position
             let center_node_id = graph.add_node(Node { position: center_pos });
             let top_node_id = graph.add_node(Node {
-                position: center_pos + (Direction::Up.as_ivec2() * (CELL_SIZE as i32 / 2)).as_vec2(),
+                position: center_pos + IVec2::from(Direction::Up.as_ivec2()).as_vec2() * (CELL_SIZE as f32 / 2.0),
             });
             let bottom_node_id = graph.add_node(Node {
-                position: center_pos + (Direction::Down.as_ivec2() * (CELL_SIZE as i32 / 2)).as_vec2(),
+                position: center_pos + IVec2::from(Direction::Down.as_ivec2()).as_vec2() * (CELL_SIZE as f32 / 2.0),
             });
 
             // Connect the center node to the top and bottom nodes
@@ -280,7 +271,7 @@ impl Map {
 
         // Calculate the position of the center line's center node
         let center_line_center_position =
-            house_entrance_node_position + (Direction::Down.as_ivec2() * (3 * CELL_SIZE as i32)).as_vec2();
+            house_entrance_node_position + IVec2::from(Direction::Down.as_ivec2()).as_vec2() * (3.0 * CELL_SIZE as f32);
 
         // Create the center line
         let (center_center_node_id, center_top_node_id) = create_house_line(graph, center_line_center_position)?;
@@ -294,7 +285,7 @@ impl Map {
                 false,
                 None,
                 Direction::Down,
-                EdgePermissions::GhostsOnly,
+                TraversalFlags::GHOST,
             )
             .map_err(|e| MapError::InvalidConfig(format!("Failed to create ghost-only entrance to house: {e}")))?;
 
@@ -305,20 +296,20 @@ impl Map {
                 false,
                 None,
                 Direction::Up,
-                EdgePermissions::GhostsOnly,
+                TraversalFlags::GHOST,
             )
             .map_err(|e| MapError::InvalidConfig(format!("Failed to create ghost-only exit from house: {e}")))?;
 
         // Create the left line
         let (left_center_node_id, _) = create_house_line(
             graph,
-            center_line_center_position + (Direction::Left.as_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
+            center_line_center_position + IVec2::from(Direction::Left.as_ivec2()).as_vec2() * (CELL_SIZE as f32 * 2.0),
         )?;
 
         // Create the right line
         let (right_center_node_id, _) = create_house_line(
             graph,
-            center_line_center_position + (Direction::Right.as_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
+            center_line_center_position + IVec2::from(Direction::Right.as_ivec2()).as_vec2() * (CELL_SIZE as f32 * 2.0),
         )?;
 
         debug!("Left center node id: {left_center_node_id}");
@@ -342,11 +333,14 @@ impl Map {
         ))
     }
 
-    /// Builds the tunnel connections in the graph.
+    /// Creates horizontal tunnel portals for instant teleportation across the maze.
+    ///
+    /// Establishes the tunnel system that allows entities to instantly travel from the left edge of the maze to the right edge.
+    /// Creates hidden intermediate nodes beyond the visible tunnel entrances and connects them with zero-distance edges for instantaneous traversal.
     fn build_tunnels(
         graph: &mut Graph,
-        grid_to_node: &HashMap<IVec2, NodeId>,
-        tunnel_ends: &[Option<IVec2>; 2],
+        grid_to_node: &HashMap<I8Vec2, NodeId>,
+        tunnel_ends: &[Option<I8Vec2>; 2],
     ) -> GameResult<()> {
         // Create the hidden tunnel nodes
         let left_tunnel_hidden_node_id = {
@@ -362,7 +356,7 @@ impl Map {
                     Direction::Left,
                     Node {
                         position: left_tunnel_entrance_node.position
-                            + (Direction::Left.as_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
+                            + IVec2::from(Direction::Left.as_ivec2()).as_vec2() * (CELL_SIZE as f32 * 2.0),
                     },
                 )
                 .map_err(|e| {
@@ -387,7 +381,7 @@ impl Map {
                     Direction::Right,
                     Node {
                         position: right_tunnel_entrance_node.position
-                            + (Direction::Right.as_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
+                            + IVec2::from(Direction::Right.as_ivec2()).as_vec2() * (CELL_SIZE as f32 * 2.0),
                     },
                 )
                 .map_err(|e| {

src/map/direction.rs

@@ -1,8 +1,10 @@
-use glam::IVec2;
+use glam::I8Vec2;
+use strum_macros::AsRefStr;
 
 /// The four cardinal directions.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default, AsRefStr)]
 #[repr(usize)]
+#[strum(serialize_all = "lowercase")]
 pub enum Direction {
     Up,
     Down,
@@ -26,8 +28,8 @@ impl Direction {
         }
     }
 
-    /// Returns the direction as an IVec2.
-    pub fn as_ivec2(self) -> IVec2 {
+    /// Returns the direction as an I8Vec2.
+    pub fn as_ivec2(self) -> I8Vec2 {
         self.into()
     }
 
@@ -43,13 +45,13 @@ impl Direction {
     }
 }
 
-impl From<Direction> for IVec2 {
+impl From<Direction> for I8Vec2 {
     fn from(dir: Direction) -> Self {
         match dir {
-            Direction::Up => -IVec2::Y,
-            Direction::Down => IVec2::Y,
-            Direction::Left => -IVec2::X,
-            Direction::Right => IVec2::X,
+            Direction::Up => -I8Vec2::Y,
+            Direction::Down => I8Vec2::Y,
+            Direction::Left => -I8Vec2::X,
+            Direction::Right => I8Vec2::X,
         }
     }
 }

src/map/graph.rs

@@ -1,17 +1,21 @@
 use glam::Vec2;
 
-use crate::ecs::NodeId;
+use crate::systems::movement::NodeId;
 
 use super::direction::Direction;
 
-/// Defines who can traverse a given edge.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
-pub enum EdgePermissions {
-    /// Anyone can use this edge.
-    #[default]
-    All,
-    /// Only ghosts can use this edge.
-    GhostsOnly,
+use bitflags::bitflags;
+
+bitflags! {
+    /// Defines who can traverse a given edge using flags for fast checking.
+    #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+    pub struct TraversalFlags: u8 {
+        const PACMAN = 1 << 0;
+        const GHOST = 1 << 1;
+
+        /// Convenience flag for edges that all entities can use
+        const ALL = Self::PACMAN.bits() | Self::GHOST.bits();
+    }
 }
 
 /// Represents a directed edge from one node to another with a given weight (e.g., distance).
@@ -24,7 +28,7 @@ pub struct Edge {
     /// The cardinal direction of this edge.
     pub direction: Direction,
     /// Defines who is allowed to traverse this edge.
-    pub permissions: EdgePermissions,
+    pub traversal_flags: TraversalFlags,
 }
 
 /// Represents a node in the graph, defined by its position.
@@ -103,7 +107,7 @@ impl Graph {
 
     /// Adds a new node with the given data to the graph and returns its ID.
     pub fn add_node(&mut self, data: Node) -> NodeId {
-        let id = self.nodes.len();
+        let id = self.nodes.len() as NodeId;
         self.nodes.push(data);
         self.adjacency_list.push(Intersection::default());
         id
@@ -125,15 +129,15 @@ impl Graph {
         distance: Option<f32>,
         direction: Direction,
     ) -> Result<(), &'static str> {
-        if from >= self.adjacency_list.len() {
+        if from as usize >= self.adjacency_list.len() {
             return Err("From node does not exist.");
         }
-        if to >= self.adjacency_list.len() {
+        if to as usize >= self.adjacency_list.len() {
             return Err("To node does not exist.");
         }
 
-        let edge_a = self.add_edge(from, to, replace, distance, direction, EdgePermissions::default());
-        let edge_b = self.add_edge(to, from, replace, distance, direction.opposite(), EdgePermissions::default());
+        let edge_a = self.add_edge(from, to, replace, distance, direction, TraversalFlags::ALL);
+        let edge_b = self.add_edge(to, from, replace, distance, direction.opposite(), TraversalFlags::ALL);
 
         if edge_a.is_err() && edge_b.is_err() {
             return Err("Failed to connect nodes in both directions.");
@@ -161,7 +165,7 @@ impl Graph {
         replace: bool,
         distance: Option<f32>,
         direction: Direction,
-        permissions: EdgePermissions,
+        traversal_flags: TraversalFlags,
     ) -> Result<(), &'static str> {
         let edge = Edge {
             target: to,
@@ -174,20 +178,20 @@ impl Graph {
                 }
                 None => {
                     // If no distance is provided, calculate it based on the positions of the nodes
-                    let from_pos = self.nodes[from].position;
-                    let to_pos = self.nodes[to].position;
+                    let from_pos = self.nodes[from as usize].position;
+                    let to_pos = self.nodes[to as usize].position;
                     from_pos.distance(to_pos)
                 }
             },
             direction,
-            permissions,
+            traversal_flags,
         };
 
-        if from >= self.adjacency_list.len() {
+        if from as usize >= self.adjacency_list.len() {
             return Err("From node does not exist.");
         }
 
-        let adjacency_list = &mut self.adjacency_list[from];
+        let adjacency_list = &mut self.adjacency_list[from as usize];
 
         // Check if the edge already exists in this direction or to the same target
         if let Some(err) = adjacency_list.edges().find_map(|e| {
@@ -211,22 +215,30 @@ impl Graph {
 
     /// Retrieves an immutable reference to a node's data.
     pub fn get_node(&self, id: NodeId) -> Option<&Node> {
-        self.nodes.get(id)
+        self.nodes.get(id as usize)
     }
 
-    /// Returns the total number of nodes in the graph.
-    pub fn node_count(&self) -> usize {
-        self.nodes.len()
+    /// Returns an iterator over all nodes in the graph.
+    pub fn nodes(&self) -> impl Iterator<Item = &Node> {
+        self.nodes.iter()
+    }
+
+    /// Returns an iterator over all edges in the graph.
+    pub fn edges(&self) -> impl Iterator<Item = (NodeId, Edge)> + '_ {
+        self.adjacency_list
+            .iter()
+            .enumerate()
+            .flat_map(|(node_id, intersection)| intersection.edges().map(move |edge| (node_id as NodeId, edge)))
     }
 
     /// Finds a specific edge from a source node to a target node.
     pub fn find_edge(&self, from: NodeId, to: NodeId) -> Option<Edge> {
-        self.adjacency_list.get(from)?.edges().find(|edge| edge.target == to)
+        self.adjacency_list.get(from as usize)?.edges().find(|edge| edge.target == to)
     }
 
     /// Finds an edge originating from a given node that follows a specific direction.
     pub fn find_edge_in_direction(&self, from: NodeId, direction: Direction) -> Option<Edge> {
-        self.adjacency_list.get(from)?.get(direction)
+        self.adjacency_list.get(from as usize)?.get(direction)
     }
 }
 

src/map/mod.rs

@@ -1,6 +1,8 @@
 //! This module defines the game map and provides functions for interacting with it.
 
 pub mod builder;
+pub mod direction;
+pub mod graph;
 pub mod layout;
 pub mod parser;
 pub mod render;

src/map/parser.rs

@@ -2,34 +2,42 @@
 
 use crate::constants::{MapTile, BOARD_CELL_SIZE};
 use crate::error::ParseError;
-use glam::IVec2;
+use glam::I8Vec2;
 
-/// Represents the parsed data from a raw board layout.
+/// Structured representation of parsed ASCII board layout with extracted special positions.
+///
+/// Contains the complete board state after character-to-tile conversion, along with
+/// the locations of special gameplay elements that require additional processing
+/// during graph construction. Special positions are extracted during parsing to
+/// enable proper map builder initialization.
 #[derive(Debug)]
 pub struct ParsedMap {
-    /// The parsed tile layout.
+    /// 2D array of tiles converted from ASCII characters
     pub tiles: [[MapTile; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize],
-    /// The positions of the house door tiles.
-    pub house_door: [Option<IVec2>; 2],
-    /// The positions of the tunnel end tiles.
-    pub tunnel_ends: [Option<IVec2>; 2],
-    /// Pac-Man's starting position.
-    pub pacman_start: Option<IVec2>,
+    /// Two positions marking the ghost house entrance (represented by '=' characters)
+    pub house_door: [Option<I8Vec2>; 2],
+    /// Two positions marking tunnel portals for wraparound teleportation ('T' characters)
+    pub tunnel_ends: [Option<I8Vec2>; 2],
+    /// Starting position for Pac-Man (marked by 'X' character in the layout)
+    pub pacman_start: Option<I8Vec2>,
 }
 
 /// Parser for converting raw board layouts into structured map data.
 pub struct MapTileParser;
 
 impl MapTileParser {
-    /// Parses a single character into a map tile.
+    /// Converts ASCII characters from the board layout into corresponding tile types.
     ///
-    /// # Arguments
+    /// Interprets the character-based maze representation: walls (`#`), collectible
+    /// pellets (`.` and `o`), traversable spaces (` `), tunnel entrances (`T`),
+    /// ghost house doors (`=`), and entity spawn markers (`X`). Special characters
+    /// that don't represent tiles in the final map (like spawn markers) are
+    /// converted to `Empty` tiles while their positions are tracked separately.
     ///
-    /// * `c` - The character to parse
+    /// # Errors
     ///
-    /// # Returns
-    ///
-    /// The parsed map tile, or an error if the character is unknown.
+    /// Returns `ParseError::UnknownCharacter` for any character not defined
+    /// in the game's ASCII art vocabulary.
     pub fn parse_character(c: char) -> Result<MapTile, ParseError> {
         match c {
             '#' => Ok(MapTile::Wall),
@@ -80,7 +88,7 @@ impl MapTileParser {
         let mut tiles = [[MapTile::Empty; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize];
         let mut house_door = [None; 2];
         let mut tunnel_ends = [None; 2];
-        let mut pacman_start: Option<IVec2> = None;
+        let mut pacman_start: Option<I8Vec2> = None;
 
         for (y, line) in raw_board.iter().enumerate().take(BOARD_CELL_SIZE.y as usize) {
             for (x, character) in line.chars().enumerate().take(BOARD_CELL_SIZE.x as usize) {
@@ -90,16 +98,16 @@ impl MapTileParser {
                 match tile {
                     MapTile::Tunnel => {
                         if tunnel_ends[0].is_none() {
-                            tunnel_ends[0] = Some(IVec2::new(x as i32, y as i32));
+                            tunnel_ends[0] = Some(I8Vec2::new(x as i8, y as i8));
                         } else {
-                            tunnel_ends[1] = Some(IVec2::new(x as i32, y as i32));
+                            tunnel_ends[1] = Some(I8Vec2::new(x as i8, y as i8));
                         }
                     }
                     MapTile::Wall if character == '=' => {
                         if house_door[0].is_none() {
-                            house_door[0] = Some(IVec2::new(x as i32, y as i32));
+                            house_door[0] = Some(I8Vec2::new(x as i8, y as i8));
                         } else {
-                            house_door[1] = Some(IVec2::new(x as i32, y as i32));
+                            house_door[1] = Some(I8Vec2::new(x as i8, y as i8));
                         }
                     }
                     _ => {}
@@ -107,7 +115,7 @@ impl MapTileParser {
 
                 // Track Pac-Man's starting position
                 if character == 'X' {
-                    pacman_start = Some(IVec2::new(x as i32, y as i32));
+                    pacman_start = Some(I8Vec2::new(x as i8, y as i8));
                 }
 
                 tiles[x][y] = tile;

src/map/render.rs

@@ -3,14 +3,10 @@
 use crate::constants::{BOARD_CELL_OFFSET, CELL_SIZE};
 use crate::map::layout::TILE_MAP;
 use crate::texture::sprite::{AtlasTile, SpriteAtlas};
-use crate::texture::text::TextTexture;
-use glam::Vec2;
 use sdl2::pixels::Color;
-use sdl2::rect::{Point, Rect};
+use sdl2::rect::Rect;
 use sdl2::render::{Canvas, RenderTarget};
 
-use crate::error::{EntityError, GameError, GameResult};
-
 /// Handles rendering operations for the map.
 pub struct MapRenderer;
 
@@ -19,7 +15,7 @@ impl MapRenderer {
     ///
     /// This function draws the static map texture to the screen at the correct
     /// position and scale.
-    pub fn render_map<T: RenderTarget>(canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, map_tiles: &mut [AtlasTile]) {
+    pub fn render_map<T: RenderTarget>(canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, map_tiles: &[AtlasTile]) {
         for (y, row) in TILE_MAP.iter().enumerate() {
             for (x, &tile_index) in row.iter().enumerate() {
                 let mut tile = map_tiles[tile_index];
@@ -37,111 +33,4 @@ impl MapRenderer {
             }
         }
     }
-
-    /// Renders a debug visualization with cursor-based highlighting.
-    ///
-    /// This function provides interactive debugging by highlighting the nearest node
-    /// to the cursor, showing its ID, and highlighting its connections.
-    pub fn debug_render_with_cursor<T: RenderTarget>(
-        graph: &crate::entity::graph::Graph,
-        canvas: &mut Canvas<T>,
-        text_renderer: &mut TextTexture,
-        atlas: &mut SpriteAtlas,
-        cursor_pos: Vec2,
-    ) -> GameResult<()> {
-        // Find the nearest node to the cursor
-        let nearest_node = Self::find_nearest_node(graph, cursor_pos);
-
-        // Draw all connections in blue
-        canvas.set_draw_color(Color::RGB(0, 0, 128)); // Dark blue for regular connections
-        for i in 0..graph.node_count() {
-            let node = graph.get_node(i).ok_or(GameError::Entity(EntityError::NodeNotFound(i)))?;
-            let pos = node.position + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-
-            for edge in graph.adjacency_list[i].edges() {
-                let end_pos = graph
-                    .get_node(edge.target)
-                    .ok_or(GameError::Entity(EntityError::NodeNotFound(edge.target)))?
-                    .position
-                    + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-                canvas
-                    .draw_line((pos.x as i32, pos.y as i32), (end_pos.x as i32, end_pos.y as i32))
-                    .map_err(|e| GameError::Sdl(e.to_string()))?;
-            }
-        }
-
-        // Draw all nodes in green
-        canvas.set_draw_color(Color::RGB(0, 128, 0)); // Dark green for regular nodes
-        for i in 0..graph.node_count() {
-            let node = graph.get_node(i).ok_or(GameError::Entity(EntityError::NodeNotFound(i)))?;
-            let pos = node.position + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-
-            canvas
-                .fill_rect(Rect::new(0, 0, 3, 3).centered_on(Point::new(pos.x as i32, pos.y as i32)))
-                .map_err(|e| GameError::Sdl(e.to_string()))?;
-        }
-
-        // Highlight connections from the nearest node in bright blue
-        if let Some(nearest_id) = nearest_node {
-            let nearest_pos = graph
-                .get_node(nearest_id)
-                .ok_or(GameError::Entity(EntityError::NodeNotFound(nearest_id)))?
-                .position
-                + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-
-            canvas.set_draw_color(Color::RGB(0, 255, 255)); // Bright cyan for highlighted connections
-            for edge in graph.adjacency_list[nearest_id].edges() {
-                let end_pos = graph
-                    .get_node(edge.target)
-                    .ok_or(GameError::Entity(EntityError::NodeNotFound(edge.target)))?
-                    .position
-                    + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-                canvas
-                    .draw_line(
-                        (nearest_pos.x as i32, nearest_pos.y as i32),
-                        (end_pos.x as i32, end_pos.y as i32),
-                    )
-                    .map_err(|e| GameError::Sdl(e.to_string()))?;
-            }
-
-            // Highlight the nearest node in bright green
-            canvas.set_draw_color(Color::RGB(0, 255, 0)); // Bright green for highlighted node
-            canvas
-                .fill_rect(Rect::new(0, 0, 5, 5).centered_on(Point::new(nearest_pos.x as i32, nearest_pos.y as i32)))
-                .map_err(|e| GameError::Sdl(e.to_string()))?;
-
-            // Draw node ID text (small, offset to top right)
-            text_renderer.set_scale(0.5); // Small text
-            let id_text = format!("#{nearest_id}");
-            let text_pos = glam::UVec2::new(
-                (nearest_pos.x + 4.0) as u32, // Offset to the right
-                (nearest_pos.y - 6.0) as u32, // Offset to the top
-            );
-            if let Err(e) = text_renderer.render(canvas, atlas, &id_text, text_pos) {
-                tracing::error!("Failed to render node ID text: {}", e);
-            }
-        }
-
-        Ok(())
-    }
-
-    /// Finds the nearest node to the given cursor position.
-    pub fn find_nearest_node(graph: &crate::entity::graph::Graph, cursor_pos: Vec2) -> Option<usize> {
-        let mut nearest_id = None;
-        let mut nearest_distance = f32::INFINITY;
-
-        for i in 0..graph.node_count() {
-            if let Some(node) = graph.get_node(i) {
-                let node_pos = node.position + crate::constants::BOARD_PIXEL_OFFSET.as_vec2();
-                let distance = cursor_pos.distance(node_pos);
-
-                if distance < nearest_distance {
-                    nearest_distance = distance;
-                    nearest_id = Some(i);
-                }
-            }
-        }
-
-        nearest_id
-    }
 }

src/platform/buffered_writer.rs

@@ -0,0 +1,55 @@
+//! Buffered writer for tracing logs that can store logs before console attachment.
+
+use parking_lot::Mutex;
+use std::io::{self, Write};
+use std::sync::Arc;
+
+/// A thread-safe buffered writer that stores logs in memory until flushed.
+#[derive(Clone)]
+pub struct BufferedWriter {
+    buffer: Arc<Mutex<Vec<u8>>>,
+}
+
+impl BufferedWriter {
+    /// Creates a new buffered writer.
+    pub fn new() -> Self {
+        Self {
+            buffer: Arc::new(Mutex::new(Vec::new())),
+        }
+    }
+
+    /// Flushes all buffered content to the provided writer and clears the buffer.
+    pub fn flush_to<W: Write>(&self, mut writer: W) -> io::Result<()> {
+        let mut buffer = self.buffer.lock();
+        if !buffer.is_empty() {
+            writer.write_all(&buffer)?;
+            writer.flush()?;
+            buffer.clear();
+        }
+        Ok(())
+    }
+
+    /// Returns the current buffer size in bytes.
+    pub fn buffer_size(&self) -> usize {
+        self.buffer.lock().len()
+    }
+}
+
+impl Write for BufferedWriter {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        let mut buffer = self.buffer.lock();
+        buffer.extend_from_slice(buf);
+        Ok(buf.len())
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        // For buffered writer, flush is a no-op since we're storing in memory
+        Ok(())
+    }
+}
+
+impl Default for BufferedWriter {
+    fn default() -> Self {
+        Self::new()
+    }
+}

src/platform/desktop.rs

@@ -5,12 +5,12 @@ use std::time::Duration;
 
 use crate::asset::Asset;
 use crate::error::{AssetError, PlatformError};
-use crate::platform::Platform;
+use crate::platform::CommonPlatform;
 
 /// Desktop platform implementation.
-pub struct DesktopPlatform;
+pub struct Platform;
 
-impl Platform for DesktopPlatform {
+impl CommonPlatform for Platform {
     fn sleep(&self, duration: Duration, focused: bool) {
         if focused {
             spin_sleep::sleep(duration);
@@ -24,44 +24,6 @@ impl Platform for DesktopPlatform {
     }
 
     fn init_console(&self) -> Result<(), PlatformError> {
-        #[cfg(windows)]
-        {
-            unsafe {
-                use winapi::{
-                    shared::ntdef::NULL,
-                    um::{
-                        fileapi::{CreateFileA, OPEN_EXISTING},
-                        handleapi::INVALID_HANDLE_VALUE,
-                        processenv::SetStdHandle,
-                        winbase::{STD_ERROR_HANDLE, STD_OUTPUT_HANDLE},
-                        wincon::{AttachConsole, GetConsoleWindow},
-                        winnt::{FILE_SHARE_READ, FILE_SHARE_WRITE, GENERIC_READ, GENERIC_WRITE},
-                    },
-                };
-
-                if !std::ptr::eq(GetConsoleWindow(), std::ptr::null_mut()) {
-                    return Ok(());
-                }
-
-                if AttachConsole(winapi::um::wincon::ATTACH_PARENT_PROCESS) != 0 {
-                    let handle = CreateFileA(
-                        c"CONOUT$".as_ptr(),
-                        GENERIC_READ | GENERIC_WRITE,
-                        FILE_SHARE_READ | FILE_SHARE_WRITE,
-                        std::ptr::null_mut(),
-                        OPEN_EXISTING,
-                        0,
-                        NULL,
-                    );
-
-                    if handle != INVALID_HANDLE_VALUE {
-                        SetStdHandle(STD_OUTPUT_HANDLE, handle);
-                        SetStdHandle(STD_ERROR_HANDLE, handle);
-                    }
-                }
-            }
-        }
-
         Ok(())
     }
 
@@ -75,7 +37,8 @@ impl Platform for DesktopPlatform {
             Asset::Wav2 => Ok(Cow::Borrowed(include_bytes!("../../assets/game/sound/waka/2.ogg"))),
             Asset::Wav3 => Ok(Cow::Borrowed(include_bytes!("../../assets/game/sound/waka/3.ogg"))),
             Asset::Wav4 => Ok(Cow::Borrowed(include_bytes!("../../assets/game/sound/waka/4.ogg"))),
-            Asset::Atlas => Ok(Cow::Borrowed(include_bytes!("../../assets/game/atlas.png"))),
+            Asset::AtlasImage => Ok(Cow::Borrowed(include_bytes!("../../assets/game/atlas.png"))),
+            Asset::Font => Ok(Cow::Borrowed(include_bytes!("../../assets/game/TerminalVector.ttf"))),
         }
     }
 }

src/platform/emscripten.rs

@@ -5,12 +5,12 @@ use std::time::Duration;
 
 use crate::asset::Asset;
 use crate::error::{AssetError, PlatformError};
-use crate::platform::Platform;
+use crate::platform::CommonPlatform;
 
 /// Emscripten platform implementation.
-pub struct EmscriptenPlatform;
+pub struct Platform;
 
-impl Platform for EmscriptenPlatform {
+impl CommonPlatform for Platform {
     fn sleep(&self, duration: Duration, _focused: bool) {
         unsafe {
             emscripten_sleep(duration.as_millis() as u32);

src/platform/mod.rs

@@ -5,44 +5,44 @@ use crate::error::{AssetError, PlatformError};
 use std::borrow::Cow;
 use std::time::Duration;
 
-pub mod desktop;
-pub mod emscripten;
+#[cfg(not(target_os = "emscripten"))]
+mod desktop;
+#[cfg(target_os = "emscripten")]
+mod emscripten;
 
-/// Platform abstraction trait that defines cross-platform functionality.
-pub trait Platform {
-    /// Sleep for the specified duration using platform-appropriate method.
+pub mod buffered_writer;
+pub mod tracing_buffer;
+/// Cross-platform abstraction layer providing unified APIs for platform-specific operations.
+pub trait CommonPlatform {
+    /// Platform-specific sleep function (required due to Emscripten's non-standard sleep requirements).
+    ///
+    /// Provides access to current window focus state, useful for changing sleep algorithm conditionally.
     fn sleep(&self, duration: Duration, focused: bool);
 
-    /// Get the current time in seconds since some reference point.
-    /// This is available for future use in timing and performance monitoring.
     #[allow(dead_code)]
     fn get_time(&self) -> f64;
 
-    /// Initialize platform-specific console functionality.
+    /// Configures platform-specific console and debugging output capabilities.
     fn init_console(&self) -> Result<(), PlatformError>;
 
-    /// Get canvas size for platforms that need it (e.g., Emscripten).
-    /// This is available for future use in responsive design.
+    /// Retrieves the actual display canvas dimensions.
     #[allow(dead_code)]
     fn get_canvas_size(&self) -> Option<(u32, u32)>;
 
-    /// Load asset bytes using platform-appropriate method.
+    /// Loads raw asset data using the appropriate platform-specific method.
     fn get_asset_bytes(&self, asset: Asset) -> Result<Cow<'static, [u8]>, AssetError>;
 }
 
-/// Get the current platform implementation.
+/// Returns the appropriate platform implementation based on compile-time target.
 #[allow(dead_code)]
-pub fn get_platform() -> &'static dyn Platform {
-    static DESKTOP: desktop::DesktopPlatform = desktop::DesktopPlatform;
-    static EMSCRIPTEN: emscripten::EmscriptenPlatform = emscripten::EmscriptenPlatform;
-
+pub fn get_platform() -> &'static dyn CommonPlatform {
     #[cfg(not(target_os = "emscripten"))]
     {
-        &DESKTOP
+        &desktop::Platform
     }
 
     #[cfg(target_os = "emscripten")]
     {
-        &EMSCRIPTEN
+        &emscripten::Platform
     }
 }

src/platform/tracing_buffer.rs

@@ -0,0 +1,91 @@
+//! Buffered tracing setup for handling logs before console attachment.
+
+use crate::platform::buffered_writer::BufferedWriter;
+use std::io;
+use tracing::Level;
+use tracing_error::ErrorLayer;
+use tracing_subscriber::fmt::MakeWriter;
+use tracing_subscriber::layer::SubscriberExt;
+
+/// A writer that can switch between buffering and direct output.
+#[derive(Clone, Default)]
+pub struct SwitchableWriter {
+    buffered_writer: BufferedWriter,
+    direct_mode: std::sync::Arc<parking_lot::Mutex<bool>>,
+}
+
+impl SwitchableWriter {
+    pub fn switch_to_direct_mode(&self) -> io::Result<()> {
+        // Get buffer size before flushing for debug logging
+        let buffer_size = self.buffered_writer.buffer_size();
+
+        // First flush any buffered content
+        self.buffered_writer.flush_to(io::stdout())?;
+
+        // Switch to direct mode
+        *self.direct_mode.lock() = true;
+
+        // Log how much was buffered (this will now go directly to stdout)
+        tracing::debug!("Flushed {} bytes of buffered logs to console", buffer_size);
+
+        Ok(())
+    }
+}
+
+impl io::Write for SwitchableWriter {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        if *self.direct_mode.lock() {
+            io::stdout().write(buf)
+        } else {
+            self.buffered_writer.clone().write(buf)
+        }
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        if *self.direct_mode.lock() {
+            io::stdout().flush()
+        } else {
+            // For buffered mode, flush is a no-op
+            Ok(())
+        }
+    }
+}
+
+/// A make writer that uses the switchable writer.
+#[derive(Clone)]
+pub struct SwitchableMakeWriter {
+    writer: SwitchableWriter,
+}
+
+impl SwitchableMakeWriter {
+    pub fn new(writer: SwitchableWriter) -> Self {
+        Self { writer }
+    }
+}
+
+impl<'a> MakeWriter<'a> for SwitchableMakeWriter {
+    type Writer = SwitchableWriter;
+
+    fn make_writer(&'a self) -> Self::Writer {
+        self.writer.clone()
+    }
+}
+
+/// Sets up a switchable tracing subscriber that can transition from buffered to direct output.
+///
+/// Returns the switchable writer that can be used to control the behavior.
+pub fn setup_switchable_subscriber() -> SwitchableWriter {
+    let switchable_writer = SwitchableWriter::default();
+    let make_writer = SwitchableMakeWriter::new(switchable_writer.clone());
+
+    let _subscriber = tracing_subscriber::fmt()
+        .with_ansi(cfg!(not(target_os = "emscripten")))
+        .with_max_level(Level::DEBUG)
+        .with_writer(make_writer)
+        .finish()
+        .with(ErrorLayer::default());
+
+    tracing::subscriber::set_global_default(_subscriber).expect("Could not set global default switchable subscriber");
+
+    switchable_writer
+}

src/systems/audio.rs

@@ -0,0 +1,64 @@
+//! Audio system for handling sound playback in the Pac-Man game.
+//!
+//! This module provides an ECS-based audio system that integrates with SDL2_mixer
+//! for playing sound effects. The system uses NonSendMut resources to handle SDL2's
+//! main-thread requirements while maintaining Bevy ECS compatibility.
+
+use bevy_ecs::{
+    event::{Event, EventReader, EventWriter},
+    resource::Resource,
+    system::{NonSendMut, ResMut},
+};
+
+use crate::{audio::Audio, error::GameError};
+
+/// Resource for tracking audio state
+#[derive(Resource, Debug, Clone, Default)]
+pub struct AudioState {
+    /// Whether audio is currently muted
+    pub muted: bool,
+    /// Current sound index for cycling through eat sounds
+    pub sound_index: usize,
+}
+
+/// Events for triggering audio playback
+#[derive(Event, Debug, Clone, Copy, PartialEq, Eq)]
+pub enum AudioEvent {
+    /// Play the "eat" sound when Pac-Man consumes a pellet
+    PlayEat,
+}
+
+/// Non-send resource wrapper for SDL2 audio system
+///
+/// This wrapper is needed because SDL2 audio components are not Send,
+/// but Bevy ECS requires Send for regular resources. Using NonSendMut
+/// allows us to use SDL2 audio on the main thread while integrating
+/// with the ECS system.
+pub struct AudioResource(pub Audio);
+
+/// System that processes audio events and plays sounds
+pub fn audio_system(
+    mut audio: NonSendMut<AudioResource>,
+    mut audio_state: ResMut<AudioState>,
+    mut audio_events: EventReader<AudioEvent>,
+    _errors: EventWriter<GameError>,
+) {
+    // Set mute state if it has changed
+    if audio.0.is_muted() != audio_state.muted {
+        audio.0.set_mute(audio_state.muted);
+    }
+
+    // Process audio events
+    for event in audio_events.read() {
+        match event {
+            AudioEvent::PlayEat => {
+                if !audio.0.is_disabled() && !audio_state.muted {
+                    audio.0.eat();
+                    // Update the sound index for cycling through sounds
+                    audio_state.sound_index = (audio_state.sound_index + 1) % 4;
+                    // 4 eat sounds available
+                }
+            }
+        }
+    }
+}

src/systems/blinking.rs

@@ -0,0 +1,63 @@
+use bevy_ecs::{
+    component::Component,
+    entity::Entity,
+    query::{Has, With},
+    system::{Commands, Query, Res},
+};
+
+use crate::systems::{
+    components::{DeltaTime, Renderable},
+    Frozen, Hidden,
+};
+
+#[derive(Component, Debug)]
+pub struct Blinking {
+    pub timer: f32,
+    pub interval: f32,
+}
+
+impl Blinking {
+    pub fn new(interval: f32) -> Self {
+        Self { timer: 0.0, interval }
+    }
+}
+
+/// Updates blinking entities by toggling their visibility at regular intervals.
+///
+/// This system manages entities that have both `Blinking` and `Renderable` components,
+/// accumulating time and toggling visibility when the specified interval is reached.
+#[allow(clippy::type_complexity)]
+pub fn blinking_system(
+    mut commands: Commands,
+    time: Res<DeltaTime>,
+    mut query: Query<(Entity, &mut Blinking, Has<Hidden>, Has<Frozen>), With<Renderable>>,
+) {
+    for (entity, mut blinking, hidden, frozen) in query.iter_mut() {
+        // If the entity is frozen, blinking is disabled and the entity is unhidden (if it was hidden)
+        if frozen {
+            if hidden {
+                commands.entity(entity).remove::<Hidden>();
+            }
+
+            continue;
+        }
+
+        // Increase the timer by the delta time
+        blinking.timer += time.0;
+
+        // If the timer is less than the interval, there's nothing to do yet
+        if blinking.timer < blinking.interval {
+            continue;
+        }
+
+        // Subtract the interval (allows for the timer to retain partial interval progress)
+        blinking.timer -= blinking.interval;
+
+        // Toggle the Hidden component
+        if hidden {
+            commands.entity(entity).remove::<Hidden>();
+        } else {
+            commands.entity(entity).insert(Hidden);
+        }
+    }
+}

src/systems/collision.rs

@@ -0,0 +1,152 @@
+use bevy_ecs::component::Component;
+use bevy_ecs::entity::Entity;
+use bevy_ecs::event::{EventReader, EventWriter};
+use bevy_ecs::query::With;
+use bevy_ecs::system::{Query, Res, ResMut};
+
+use crate::error::GameError;
+use crate::events::GameEvent;
+use crate::map::builder::Map;
+use crate::systems::movement::Position;
+use crate::systems::{AudioEvent, Ghost, GhostState, PlayerControlled, ScoreResource};
+
+#[derive(Component)]
+pub struct Collider {
+    pub size: f32,
+}
+
+impl Collider {
+    /// Checks if this collider collides with another collider at the given distance.
+    pub fn collides_with(&self, other_size: f32, distance: f32) -> bool {
+        let collision_distance = (self.size + other_size) / 2.0;
+        distance < collision_distance
+    }
+}
+
+/// Marker components for collision filtering optimization
+#[derive(Component)]
+pub struct PacmanCollider;
+
+#[derive(Component)]
+pub struct GhostCollider;
+
+#[derive(Component)]
+pub struct ItemCollider;
+
+/// Helper function to check collision between two entities with colliders.
+pub fn check_collision(
+    pos1: &Position,
+    collider1: &Collider,
+    pos2: &Position,
+    collider2: &Collider,
+    map: &Map,
+) -> Result<bool, GameError> {
+    let pixel1 = pos1
+        .get_pixel_position(&map.graph)
+        .map_err(|e| GameError::InvalidState(format!("Failed to get pixel position for entity 1: {}", e)))?;
+    let pixel2 = pos2
+        .get_pixel_position(&map.graph)
+        .map_err(|e| GameError::InvalidState(format!("Failed to get pixel position for entity 2: {}", e)))?;
+
+    let distance = pixel1.distance(pixel2);
+    Ok(collider1.collides_with(collider2.size, distance))
+}
+
+/// Detects overlapping entities and generates collision events for gameplay systems.
+///
+/// Performs distance-based collision detection between Pac-Man and collectible items
+/// using each entity's position and collision radius. When entities overlap, emits
+/// a `GameEvent::Collision` for the item system to handle scoring and removal.
+/// Collision detection accounts for both entities being in motion and supports
+/// circular collision boundaries for accurate gameplay feel.
+///
+/// Also detects collisions between Pac-Man and ghosts for gameplay mechanics like
+/// power pellet effects, ghost eating, and player death.
+pub fn collision_system(
+    map: Res<Map>,
+    pacman_query: Query<(Entity, &Position, &Collider), With<PacmanCollider>>,
+    item_query: Query<(Entity, &Position, &Collider), With<ItemCollider>>,
+    ghost_query: Query<(Entity, &Position, &Collider), With<GhostCollider>>,
+    mut events: EventWriter<GameEvent>,
+    mut errors: EventWriter<GameError>,
+) {
+    // Check PACMAN × ITEM collisions
+    for (pacman_entity, pacman_pos, pacman_collider) in pacman_query.iter() {
+        for (item_entity, item_pos, item_collider) in item_query.iter() {
+            match check_collision(pacman_pos, pacman_collider, item_pos, item_collider, &map) {
+                Ok(colliding) => {
+                    if colliding {
+                        events.write(GameEvent::Collision(pacman_entity, item_entity));
+                    }
+                }
+                Err(e) => {
+                    errors.write(GameError::InvalidState(format!(
+                        "Collision system failed to check collision between entities {:?} and {:?}: {}",
+                        pacman_entity, item_entity, e
+                    )));
+                }
+            }
+        }
+
+        // Check PACMAN × GHOST collisions
+        for (ghost_entity, ghost_pos, ghost_collider) in ghost_query.iter() {
+            match check_collision(pacman_pos, pacman_collider, ghost_pos, ghost_collider, &map) {
+                Ok(colliding) => {
+                    if colliding {
+                        events.write(GameEvent::Collision(pacman_entity, ghost_entity));
+                    }
+                }
+                Err(e) => {
+                    errors.write(GameError::InvalidState(format!(
+                        "Collision system failed to check collision between entities {:?} and {:?}: {}",
+                        pacman_entity, ghost_entity, e
+                    )));
+                }
+            }
+        }
+    }
+}
+
+pub fn ghost_collision_system(
+    mut collision_events: EventReader<GameEvent>,
+    mut score: ResMut<ScoreResource>,
+    pacman_query: Query<(), With<PlayerControlled>>,
+    ghost_query: Query<(Entity, &Ghost), With<GhostCollider>>,
+    mut ghost_state_query: Query<&mut GhostState>,
+    mut events: EventWriter<AudioEvent>,
+) {
+    for event in collision_events.read() {
+        if let GameEvent::Collision(entity1, entity2) = event {
+            // Check if one is Pacman and the other is a ghost
+            let (_pacman_entity, ghost_entity) = if pacman_query.get(*entity1).is_ok() && ghost_query.get(*entity2).is_ok() {
+                (*entity1, *entity2)
+            } else if pacman_query.get(*entity2).is_ok() && ghost_query.get(*entity1).is_ok() {
+                (*entity2, *entity1)
+            } else {
+                continue;
+            };
+
+            // Check if the ghost is frightened
+            if let Ok((ghost_ent, _ghost_type)) = ghost_query.get(ghost_entity) {
+                if let Ok(mut ghost_state) = ghost_state_query.get_mut(ghost_ent) {
+                    // Check if ghost is in frightened state
+                    if matches!(*ghost_state, GhostState::Frightened { .. }) {
+                        // Pac-Man eats the ghost
+                        // Add score (200 points per ghost eaten)
+                        score.0 += 200;
+
+                        // Set ghost state to Eyes
+                        *ghost_state = GhostState::Eyes;
+
+                        // Play eat sound
+                        events.write(AudioEvent::PlayEat);
+                    } else {
+                        // Pac-Man dies (this would need a death system)
+                        // For now, just log it
+                        tracing::warn!("Pac-Man collided with ghost while not frightened!");
+                    }
+                }
+            }
+        }
+    }
+}

src/systems/components.rs

@@ -0,0 +1,364 @@
+use std::collections::HashMap;
+
+use bevy_ecs::{bundle::Bundle, component::Component, resource::Resource};
+use bitflags::bitflags;
+
+use crate::{
+    map::graph::TraversalFlags,
+    systems::{
+        movement::{BufferedDirection, Position, Velocity},
+        Collider, GhostCollider, ItemCollider, PacmanCollider,
+    },
+    texture::{
+        animated::{DirectionalTiles, TileSequence},
+        sprite::AtlasTile,
+    },
+};
+
+/// A tag component for entities that are controlled by the player.
+#[derive(Default, Component)]
+pub struct PlayerControlled;
+
+#[derive(Component, Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum Ghost {
+    Blinky,
+    Pinky,
+    Inky,
+    Clyde,
+}
+
+impl Ghost {
+    /// Returns the ghost type name for atlas lookups.
+    pub fn as_str(self) -> &'static str {
+        match self {
+            Ghost::Blinky => "blinky",
+            Ghost::Pinky => "pinky",
+            Ghost::Inky => "inky",
+            Ghost::Clyde => "clyde",
+        }
+    }
+
+    /// Returns the base movement speed for this ghost type.
+    pub fn base_speed(self) -> f32 {
+        match self {
+            Ghost::Blinky => 1.0,
+            Ghost::Pinky => 0.95,
+            Ghost::Inky => 0.9,
+            Ghost::Clyde => 0.85,
+        }
+    }
+
+    /// Returns the ghost's color for debug rendering.
+    #[allow(dead_code)]
+    pub fn debug_color(&self) -> sdl2::pixels::Color {
+        match self {
+            Ghost::Blinky => sdl2::pixels::Color::RGB(255, 0, 0),    // Red
+            Ghost::Pinky => sdl2::pixels::Color::RGB(255, 182, 255), // Pink
+            Ghost::Inky => sdl2::pixels::Color::RGB(0, 255, 255),    // Cyan
+            Ghost::Clyde => sdl2::pixels::Color::RGB(255, 182, 85),  // Orange
+        }
+    }
+}
+
+/// A tag component denoting the type of entity.
+#[derive(Component, Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum EntityType {
+    Player,
+    Ghost,
+    Pellet,
+    PowerPellet,
+}
+
+impl EntityType {
+    /// Returns the traversal flags for this entity type.
+    pub fn traversal_flags(&self) -> TraversalFlags {
+        match self {
+            EntityType::Player => TraversalFlags::PACMAN,
+            EntityType::Ghost => TraversalFlags::GHOST,
+            _ => TraversalFlags::empty(), // Static entities don't traverse
+        }
+    }
+    pub fn score_value(&self) -> Option<u32> {
+        match self {
+            EntityType::Pellet => Some(10),
+            EntityType::PowerPellet => Some(50),
+            _ => None,
+        }
+    }
+
+    pub fn is_collectible(&self) -> bool {
+        matches!(self, EntityType::Pellet | EntityType::PowerPellet)
+    }
+}
+
+/// A component for entities that have a sprite, with a layer for ordering.
+///
+/// This is intended to be modified by other entities allowing animation.
+#[derive(Component)]
+pub struct Renderable {
+    pub sprite: AtlasTile,
+    pub layer: u8,
+}
+
+/// Directional animation component with shared timing across all directions
+#[derive(Component, Clone, Copy)]
+pub struct DirectionalAnimation {
+    pub moving_tiles: DirectionalTiles,
+    pub stopped_tiles: DirectionalTiles,
+    pub current_frame: usize,
+    pub time_bank: u16,
+    pub frame_duration: u16,
+}
+
+impl DirectionalAnimation {
+    /// Creates a new directional animation with the given tiles and frame duration
+    pub fn new(moving_tiles: DirectionalTiles, stopped_tiles: DirectionalTiles, frame_duration: u16) -> Self {
+        Self {
+            moving_tiles,
+            stopped_tiles,
+            current_frame: 0,
+            time_bank: 0,
+            frame_duration,
+        }
+    }
+}
+
+/// Linear animation component for non-directional animations (frightened ghosts)
+#[derive(Component, Clone, Copy)]
+pub struct LinearAnimation {
+    pub tiles: TileSequence,
+    pub current_frame: usize,
+    pub time_bank: u16,
+    pub frame_duration: u16,
+}
+
+impl LinearAnimation {
+    /// Creates a new linear animation with the given tiles and frame duration
+    pub fn new(tiles: TileSequence, frame_duration: u16) -> Self {
+        Self {
+            tiles,
+            current_frame: 0,
+            time_bank: 0,
+            frame_duration,
+        }
+    }
+}
+
+bitflags! {
+    #[derive(Component, Default, Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    pub struct CollisionLayer: u8 {
+        const PACMAN = 1 << 0;
+        const GHOST = 1 << 1;
+        const ITEM = 1 << 2;
+    }
+}
+
+#[derive(Resource)]
+pub struct GlobalState {
+    pub exit: bool,
+}
+
+#[derive(Resource)]
+pub struct ScoreResource(pub u32);
+
+#[derive(Resource)]
+pub struct DeltaTime(pub f32);
+
+/// Movement modifiers that can affect Pac-Man's speed or handling.
+#[derive(Component, Debug, Clone, Copy)]
+pub struct MovementModifiers {
+    /// Multiplier applied to base speed (e.g., tunnels)
+    pub speed_multiplier: f32,
+    /// True when currently in a tunnel slowdown region
+    pub tunnel_slowdown_active: bool,
+}
+
+impl Default for MovementModifiers {
+    fn default() -> Self {
+        Self {
+            speed_multiplier: 1.0,
+            tunnel_slowdown_active: false,
+        }
+    }
+}
+
+/// Tag component for entities that should be frozen during startup
+#[derive(Component, Debug, Clone, Copy)]
+pub struct Frozen;
+
+/// Tag component for eaten ghosts
+#[derive(Component, Debug, Clone, Copy)]
+pub struct Eaten;
+
+#[derive(Component, Debug, Clone, Copy)]
+pub enum GhostState {
+    /// Normal ghost behavior - chasing Pac-Man
+    Normal,
+    /// Frightened state after power pellet - ghost can be eaten
+    Frightened {
+        remaining_ticks: u32,
+        flash: bool,
+        remaining_flash_ticks: u32,
+    },
+    /// Eyes state - ghost has been eaten and is returning to ghost house
+    Eyes,
+}
+
+/// Component to track the last animation state for efficient change detection
+#[derive(Component, Debug, Clone, Copy, PartialEq)]
+pub struct LastAnimationState(pub GhostAnimation);
+
+impl GhostState {
+    /// Creates a new frightened state with the specified duration
+    pub fn new_frightened(total_ticks: u32, flash_start_ticks: u32) -> Self {
+        Self::Frightened {
+            remaining_ticks: total_ticks,
+            flash: false,
+            remaining_flash_ticks: flash_start_ticks, // Time until flashing starts
+        }
+    }
+
+    /// Ticks the ghost state, returning true if the state changed.
+    pub fn tick(&mut self) -> bool {
+        if let GhostState::Frightened {
+            remaining_ticks,
+            flash,
+            remaining_flash_ticks,
+        } = self
+        {
+            // Transition out of frightened state
+            if *remaining_ticks == 0 {
+                *self = GhostState::Normal;
+                return true;
+            }
+
+            *remaining_ticks -= 1;
+
+            if *remaining_flash_ticks > 0 {
+                *remaining_flash_ticks = remaining_flash_ticks.saturating_sub(1);
+                if *remaining_flash_ticks == 0 {
+                    *flash = true;
+                    true
+                } else {
+                    false
+                }
+            } else {
+                false
+            }
+        } else {
+            false
+        }
+    }
+
+    /// Returns the appropriate animation state for this ghost state
+    pub fn animation_state(&self) -> GhostAnimation {
+        match self {
+            GhostState::Normal => GhostAnimation::Normal,
+            GhostState::Eyes => GhostAnimation::Eyes,
+            GhostState::Frightened { flash: false, .. } => GhostAnimation::Frightened { flash: false },
+            GhostState::Frightened { flash: true, .. } => GhostAnimation::Frightened { flash: true },
+        }
+    }
+}
+
+/// Enumeration of different ghost animation states.
+/// Note that this is used in micromap which has a fixed size based on the number of variants,
+/// so extending this should be done with caution, and will require updating the micromap's capacity.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum GhostAnimation {
+    /// Normal ghost appearance with directional movement animations
+    Normal,
+    /// Blue ghost appearance when vulnerable (power pellet active)
+    Frightened { flash: bool },
+    /// Eyes-only animation when ghost has been consumed by Pac-Man (Eaten state)
+    Eyes,
+}
+
+/// Global resource containing pre-loaded animation sets for all ghost types.
+///
+/// This resource is initialized once during game startup and provides O(1) access
+/// to animation sets for each ghost type. The animation system uses this resource
+/// to efficiently switch between different ghost states without runtime asset loading.
+///
+/// The HashMap is keyed by `Ghost` enum variants (Blinky, Pinky, Inky, Clyde) and
+/// contains the normal directional animation for each ghost type.
+#[derive(Resource)]
+pub struct GhostAnimations {
+    pub normal: HashMap<Ghost, DirectionalAnimation>,
+    pub eyes: DirectionalAnimation,
+    pub frightened: LinearAnimation,
+    pub frightened_flashing: LinearAnimation,
+}
+
+impl GhostAnimations {
+    /// Creates a new GhostAnimations resource with the provided data.
+    pub fn new(
+        normal: HashMap<Ghost, DirectionalAnimation>,
+        eyes: DirectionalAnimation,
+        frightened: LinearAnimation,
+        frightened_flashing: LinearAnimation,
+    ) -> Self {
+        Self {
+            normal,
+            eyes,
+            frightened,
+            frightened_flashing,
+        }
+    }
+
+    /// Gets the normal directional animation for the specified ghost type.
+    pub fn get_normal(&self, ghost_type: &Ghost) -> Option<&DirectionalAnimation> {
+        self.normal.get(ghost_type)
+    }
+
+    /// Gets the eyes animation (shared across all ghosts).
+    pub fn eyes(&self) -> &DirectionalAnimation {
+        &self.eyes
+    }
+
+    /// Gets the frightened animations (shared across all ghosts).
+    pub fn frightened(&self, flash: bool) -> &LinearAnimation {
+        if flash {
+            &self.frightened_flashing
+        } else {
+            &self.frightened
+        }
+    }
+}
+
+#[derive(Bundle)]
+pub struct PlayerBundle {
+    pub player: PlayerControlled,
+    pub position: Position,
+    pub velocity: Velocity,
+    pub buffered_direction: BufferedDirection,
+    pub sprite: Renderable,
+    pub directional_animation: DirectionalAnimation,
+    pub entity_type: EntityType,
+    pub collider: Collider,
+    pub movement_modifiers: MovementModifiers,
+    pub pacman_collider: PacmanCollider,
+}
+
+#[derive(Bundle)]
+pub struct ItemBundle {
+    pub position: Position,
+    pub sprite: Renderable,
+    pub entity_type: EntityType,
+    pub collider: Collider,
+    pub item_collider: ItemCollider,
+}
+
+#[derive(Bundle)]
+pub struct GhostBundle {
+    pub ghost: Ghost,
+    pub position: Position,
+    pub velocity: Velocity,
+    pub sprite: Renderable,
+    pub directional_animation: DirectionalAnimation,
+    pub entity_type: EntityType,
+    pub collider: Collider,
+    pub ghost_collider: GhostCollider,
+    pub ghost_state: GhostState,
+    pub last_animation_state: LastAnimationState,
+}

src/systems/debug.rs

@@ -0,0 +1,207 @@
+//! Debug rendering system
+use std::cmp::Ordering;
+
+use crate::constants::BOARD_PIXEL_OFFSET;
+use crate::map::builder::Map;
+use crate::systems::{Collider, CursorPosition, NodeId, Position, SystemTimings};
+use bevy_ecs::resource::Resource;
+use bevy_ecs::system::{NonSendMut, Query, Res};
+use glam::{IVec2, UVec2, Vec2};
+use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
+use sdl2::render::{Canvas, Texture, TextureCreator};
+use sdl2::ttf::Font;
+use sdl2::video::{Window, WindowContext};
+
+#[derive(Resource, Default, Debug, Copy, Clone)]
+pub struct DebugState {
+    pub enabled: bool,
+}
+
+fn f32_to_u8(value: f32) -> u8 {
+    (value * 255.0) as u8
+}
+
+/// Resource to hold the debug texture for persistent rendering
+pub struct DebugTextureResource(pub Texture<'static>);
+
+/// Resource to hold the debug font
+pub struct DebugFontResource(pub Font<'static, 'static>);
+
+/// Transforms a position from logical canvas coordinates to output canvas coordinates (with board offset)
+fn transform_position_with_offset(pos: Vec2, scale: f32) -> IVec2 {
+    ((pos + BOARD_PIXEL_OFFSET.as_vec2()) * scale).as_ivec2()
+}
+
+/// Renders timing information in the top-left corner of the screen
+fn render_timing_display(
+    canvas: &mut Canvas<Window>,
+    texture_creator: &mut TextureCreator<WindowContext>,
+    timings: &SystemTimings,
+    font: &Font,
+) {
+    // Format timing information using the formatting module
+    let lines = timings.format_timing_display();
+    let line_height = 14; // Approximate line height for 12pt font
+    let padding = 10;
+
+    // Calculate background dimensions
+    let max_width = lines
+        .iter()
+        .filter(|l| !l.is_empty()) // Don't consider empty lines for width
+        .map(|line| font.size_of(line).unwrap().0)
+        .max()
+        .unwrap_or(0);
+
+    // Only draw background if there is text to display
+    let total_height = (lines.len() as u32) * line_height as u32;
+    if max_width > 0 && total_height > 0 {
+        let bg_padding = 5;
+
+        // Draw background
+        let bg_rect = Rect::new(
+            padding - bg_padding,
+            padding - bg_padding,
+            max_width + (bg_padding * 2) as u32,
+            total_height + bg_padding as u32,
+        );
+        canvas.set_blend_mode(sdl2::render::BlendMode::Blend);
+        canvas.set_draw_color(Color::RGBA(40, 40, 40, 180));
+        canvas.fill_rect(bg_rect).unwrap();
+    }
+
+    for (i, line) in lines.iter().enumerate() {
+        if line.is_empty() {
+            continue;
+        }
+
+        // Render each line
+        let surface = font.render(line).blended(Color::RGBA(255, 255, 255, 200)).unwrap();
+        let texture = texture_creator.create_texture_from_surface(&surface).unwrap();
+
+        // Position each line below the previous one
+        let y_pos = padding + (i * line_height) as i32;
+        let dest = Rect::new(padding, y_pos, texture.query().width, texture.query().height);
+        canvas.copy(&texture, None, dest).unwrap();
+    }
+}
+
+#[allow(clippy::too_many_arguments)]
+pub fn debug_render_system(
+    mut canvas: NonSendMut<&mut Canvas<Window>>,
+    mut debug_texture: NonSendMut<DebugTextureResource>,
+    debug_font: NonSendMut<DebugFontResource>,
+    debug_state: Res<DebugState>,
+    timings: Res<SystemTimings>,
+    map: Res<Map>,
+    colliders: Query<(&Collider, &Position)>,
+    cursor: Res<CursorPosition>,
+) {
+    if !debug_state.enabled {
+        return;
+    }
+    let scale =
+        (UVec2::from(canvas.output_size().unwrap()).as_vec2() / UVec2::from(canvas.logical_size()).as_vec2()).min_element();
+
+    // Get texture creator before entering the closure to avoid borrowing conflicts
+    let mut texture_creator = canvas.texture_creator();
+    let font = &debug_font.0;
+
+    let cursor_world_pos = match *cursor {
+        CursorPosition::None => None,
+        CursorPosition::Some { position, .. } => Some(position - BOARD_PIXEL_OFFSET.as_vec2()),
+    };
+
+    // Draw debug info on the high-resolution debug texture
+    canvas
+        .with_texture_canvas(&mut debug_texture.0, |debug_canvas| {
+            // Clear the debug canvas
+            debug_canvas.set_draw_color(Color::RGBA(0, 0, 0, 0));
+            debug_canvas.clear();
+
+            // Find the closest node to the cursor
+            let closest_node = if let Some(cursor_world_pos) = cursor_world_pos {
+                map.graph
+                    .nodes()
+                    .map(|node| node.position.distance(cursor_world_pos))
+                    .enumerate()
+                    .min_by(|(_, a), (_, b)| a.partial_cmp(b).unwrap_or(Ordering::Less))
+                    .map(|(id, _)| id)
+            } else {
+                None
+            };
+
+            debug_canvas.set_draw_color(Color::GREEN);
+            for (collider, position) in colliders.iter() {
+                let pos = position.get_pixel_position(&map.graph).unwrap();
+
+                // Transform position and size using common methods
+                let pos = (pos * scale).as_ivec2();
+                let size = (collider.size * scale) as u32;
+
+                let rect = Rect::from_center(Point::from((pos.x, pos.y)), size, size);
+                debug_canvas.draw_rect(rect).unwrap();
+            }
+
+            debug_canvas.set_draw_color(Color {
+                a: f32_to_u8(0.4),
+                ..Color::RED
+            });
+            debug_canvas.set_blend_mode(sdl2::render::BlendMode::Blend);
+            for (start_node, end_node) in map.graph.edges() {
+                let start_node_model = map.graph.get_node(start_node).unwrap();
+                let end_node = map.graph.get_node(end_node.target).unwrap().position;
+
+                // Transform positions using common method
+                let start = transform_position_with_offset(start_node_model.position, scale);
+                let end = transform_position_with_offset(end_node, scale);
+
+                debug_canvas
+                    .draw_line(Point::from((start.x, start.y)), Point::from((end.x, end.y)))
+                    .unwrap();
+            }
+
+            for (id, node) in map.graph.nodes().enumerate() {
+                let pos = node.position;
+
+                // Set color based on whether the node is the closest to the cursor
+                debug_canvas.set_draw_color(Color {
+                    a: f32_to_u8(if Some(id) == closest_node { 0.75 } else { 0.6 }),
+                    ..(if Some(id) == closest_node {
+                        Color::YELLOW
+                    } else {
+                        Color::BLUE
+                    })
+                });
+
+                // Transform position using common method
+                let pos = transform_position_with_offset(pos, scale);
+                let size = (2.0 * scale) as u32;
+
+                debug_canvas
+                    .fill_rect(Rect::new(pos.x - (size as i32 / 2), pos.y - (size as i32 / 2), size, size))
+                    .unwrap();
+            }
+
+            // Render node ID if a node is highlighted
+            if let Some(closest_node_id) = closest_node {
+                let node = map.graph.get_node(closest_node_id as NodeId).unwrap();
+                let pos = transform_position_with_offset(node.position, scale);
+
+                let surface = font
+                    .render(&closest_node_id.to_string())
+                    .blended(Color {
+                        a: f32_to_u8(0.4),
+                        ..Color::WHITE
+                    })
+                    .unwrap();
+                let texture = texture_creator.create_texture_from_surface(&surface).unwrap();
+                let dest = Rect::new(pos.x + 10, pos.y - 5, texture.query().width, texture.query().height);
+                debug_canvas.copy(&texture, None, dest).unwrap();
+            }
+
+            // Render timing information in the top-left corner
+            render_timing_display(debug_canvas, &mut texture_creator, &timings, font);
+        })
+        .unwrap();
+}

src/systems/ghost.rs

@@ -0,0 +1,219 @@
+use crate::systems::components::{DirectionalAnimation, Frozen, GhostAnimation, GhostState, LastAnimationState, LinearAnimation};
+use crate::{
+    map::{
+        builder::Map,
+        direction::Direction,
+        graph::{Edge, TraversalFlags},
+    },
+    systems::{
+        components::{DeltaTime, Ghost},
+        movement::{Position, Velocity},
+    },
+};
+
+use crate::systems::GhostAnimations;
+use bevy_ecs::query::Without;
+use bevy_ecs::system::{Commands, Query, Res};
+use rand::rngs::SmallRng;
+use rand::seq::IndexedRandom;
+use rand::SeedableRng;
+use smallvec::SmallVec;
+
+/// Autonomous ghost AI system implementing randomized movement with backtracking avoidance.
+pub fn ghost_movement_system(
+    map: Res<Map>,
+    delta_time: Res<DeltaTime>,
+    mut ghosts: Query<(&Ghost, &mut Velocity, &mut Position), Without<Frozen>>,
+) {
+    for (_ghost, mut velocity, mut position) in ghosts.iter_mut() {
+        let mut distance = velocity.speed * 60.0 * delta_time.0;
+        loop {
+            match *position {
+                Position::Stopped { node: current_node } => {
+                    let intersection = &map.graph.adjacency_list[current_node as usize];
+                    let opposite = velocity.direction.opposite();
+
+                    let mut non_opposite_options: SmallVec<[Edge; 3]> = SmallVec::new();
+
+                    // Collect all available directions that ghosts can traverse
+                    for edge in Direction::DIRECTIONS.iter().flat_map(|d| intersection.get(*d)) {
+                        if edge.traversal_flags.contains(TraversalFlags::GHOST) && edge.direction != opposite {
+                            non_opposite_options.push(edge);
+                        }
+                    }
+
+                    let new_edge: Edge = if non_opposite_options.is_empty() {
+                        if let Some(edge) = intersection.get(opposite) {
+                            edge
+                        } else {
+                            break;
+                        }
+                    } else {
+                        *non_opposite_options.choose(&mut SmallRng::from_os_rng()).unwrap()
+                    };
+
+                    velocity.direction = new_edge.direction;
+                    *position = Position::Moving {
+                        from: current_node,
+                        to: new_edge.target,
+                        remaining_distance: new_edge.distance,
+                    };
+                }
+                Position::Moving { .. } => {
+                    if let Some(overflow) = position.tick(distance) {
+                        distance = overflow;
+                    } else {
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+
+/// System that handles eaten ghost behavior and respawn logic.
+///
+/// When a ghost is eaten by Pac-Man, it enters an "eaten" state where:
+/// 1. It displays eyes-only animation
+/// 2. It moves directly back to the ghost house at increased speed
+/// 3. Once it reaches the ghost house center, it respawns as a normal ghost
+///
+/// This system runs after the main movement system to override eaten ghost movement.
+pub fn eaten_ghost_system(
+    map: Res<Map>,
+    delta_time: Res<DeltaTime>,
+    mut eaten_ghosts: Query<(&Ghost, &mut Position, &mut Velocity, &mut GhostState)>,
+) {
+    for (ghost_type, mut position, mut velocity, mut ghost_state) in eaten_ghosts.iter_mut() {
+        // Only process ghosts that are in Eyes state
+        if !matches!(*ghost_state, GhostState::Eyes) {
+            continue;
+        }
+        // Set higher speed for eaten ghosts returning to ghost house
+        let original_speed = velocity.speed;
+        velocity.speed = ghost_type.base_speed() * 2.0; // Move twice as fast when eaten
+
+        // Calculate direction towards ghost house center (using Clyde's start position)
+        let ghost_house_center = map.start_positions.clyde;
+
+        match *position {
+            Position::Stopped { node: current_node } => {
+                // Find path to ghost house center and start moving
+                if let Some(direction) = find_direction_to_target(&map, current_node, ghost_house_center) {
+                    velocity.direction = direction;
+                    *position = Position::Moving {
+                        from: current_node,
+                        to: map.graph.adjacency_list[current_node as usize].get(direction).unwrap().target,
+                        remaining_distance: map.graph.adjacency_list[current_node as usize]
+                            .get(direction)
+                            .unwrap()
+                            .distance,
+                    };
+                }
+            }
+            Position::Moving { to, .. } => {
+                let distance = velocity.speed * 60.0 * delta_time.0;
+                if let Some(_overflow) = position.tick(distance) {
+                    // Reached target node, check if we're at ghost house center
+                    if to == ghost_house_center {
+                        // Respawn the ghost - set state back to normal
+                        *ghost_state = GhostState::Normal;
+                        // Reset to stopped at ghost house center
+                        *position = Position::Stopped {
+                            node: ghost_house_center,
+                        };
+                    } else {
+                        // Continue pathfinding to ghost house
+                        if let Some(next_direction) = find_direction_to_target(&map, to, ghost_house_center) {
+                            velocity.direction = next_direction;
+                            *position = Position::Moving {
+                                from: to,
+                                to: map.graph.adjacency_list[to as usize].get(next_direction).unwrap().target,
+                                remaining_distance: map.graph.adjacency_list[to as usize].get(next_direction).unwrap().distance,
+                            };
+                        }
+                    }
+                }
+            }
+        }
+
+        // Restore original speed
+        velocity.speed = original_speed;
+    }
+}
+
+/// Helper function to find the direction from a node towards a target node.
+/// Uses simple greedy pathfinding - prefers straight lines when possible.
+fn find_direction_to_target(
+    map: &Map,
+    from_node: crate::systems::movement::NodeId,
+    target_node: crate::systems::movement::NodeId,
+) -> Option<Direction> {
+    let from_pos = map.graph.get_node(from_node).unwrap().position;
+    let target_pos = map.graph.get_node(target_node).unwrap().position;
+
+    let dx = target_pos.x as i32 - from_pos.x as i32;
+    let dy = target_pos.y as i32 - from_pos.y as i32;
+
+    // Prefer horizontal movement first, then vertical
+    let preferred_dirs = if dx.abs() > dy.abs() {
+        if dx > 0 {
+            [Direction::Right, Direction::Up, Direction::Down, Direction::Left]
+        } else {
+            [Direction::Left, Direction::Up, Direction::Down, Direction::Right]
+        }
+    } else if dy > 0 {
+        [Direction::Down, Direction::Left, Direction::Right, Direction::Up]
+    } else {
+        [Direction::Up, Direction::Left, Direction::Right, Direction::Down]
+    };
+
+    // Return first available direction towards target
+    for direction in preferred_dirs {
+        if let Some(edge) = map.graph.adjacency_list[from_node as usize].get(direction) {
+            if edge.traversal_flags.contains(TraversalFlags::GHOST) {
+                return Some(direction);
+            }
+        }
+    }
+
+    None
+}
+
+/// Unified system that manages ghost state transitions and animations with component swapping
+pub fn ghost_state_system(
+    mut commands: Commands,
+    animations: Res<GhostAnimations>,
+    mut ghosts: Query<(bevy_ecs::entity::Entity, &Ghost, &mut GhostState, &mut LastAnimationState)>,
+) {
+    for (entity, ghost_type, mut ghost_state, mut last_animation_state) in ghosts.iter_mut() {
+        // Tick the ghost state to handle internal transitions (like flashing)
+        let _ = ghost_state.tick();
+
+        // Only update animation if the animation state actually changed
+        let current_animation_state = ghost_state.animation_state();
+        if last_animation_state.0 != current_animation_state {
+            match current_animation_state {
+                GhostAnimation::Frightened { flash } => {
+                    // Remove DirectionalAnimation, add LinearAnimation
+                    commands
+                        .entity(entity)
+                        .remove::<DirectionalAnimation>()
+                        .insert(*animations.frightened(flash));
+                }
+                GhostAnimation::Normal => {
+                    // Remove LinearAnimation, add DirectionalAnimation
+                    commands
+                        .entity(entity)
+                        .remove::<LinearAnimation>()
+                        .insert(*animations.get_normal(ghost_type).unwrap());
+                }
+                GhostAnimation::Eyes => {
+                    // Remove LinearAnimation, add DirectionalAnimation (eyes animation)
+                    commands.entity(entity).remove::<LinearAnimation>().insert(*animations.eyes());
+                }
+            }
+            last_animation_state.0 = current_animation_state;
+        }
+    }
+}

src/systems/input.rs

@@ -0,0 +1,182 @@
+use std::collections::{HashMap, HashSet};
+
+use bevy_ecs::{
+    event::EventWriter,
+    resource::Resource,
+    system::{NonSendMut, Res, ResMut},
+};
+use glam::Vec2;
+use sdl2::{event::Event, keyboard::Keycode, EventPump};
+
+use crate::systems::components::DeltaTime;
+use crate::{
+    events::{GameCommand, GameEvent},
+    map::direction::Direction,
+};
+
+#[derive(Resource, Default, Debug, Copy, Clone)]
+pub enum CursorPosition {
+    #[default]
+    None,
+    Some {
+        position: Vec2,
+        remaining_time: f32,
+    },
+}
+
+#[derive(Resource, Debug, Clone)]
+pub struct Bindings {
+    key_bindings: HashMap<Keycode, GameCommand>,
+    movement_keys: HashSet<Keycode>,
+    pressed_movement_keys: Vec<Keycode>,
+}
+
+impl Default for Bindings {
+    fn default() -> Self {
+        let mut key_bindings = HashMap::new();
+
+        // Player movement
+        key_bindings.insert(Keycode::Up, GameCommand::MovePlayer(Direction::Up));
+        key_bindings.insert(Keycode::W, GameCommand::MovePlayer(Direction::Up));
+        key_bindings.insert(Keycode::Down, GameCommand::MovePlayer(Direction::Down));
+        key_bindings.insert(Keycode::S, GameCommand::MovePlayer(Direction::Down));
+        key_bindings.insert(Keycode::Left, GameCommand::MovePlayer(Direction::Left));
+        key_bindings.insert(Keycode::A, GameCommand::MovePlayer(Direction::Left));
+        key_bindings.insert(Keycode::Right, GameCommand::MovePlayer(Direction::Right));
+        key_bindings.insert(Keycode::D, GameCommand::MovePlayer(Direction::Right));
+
+        // Game actions
+        key_bindings.insert(Keycode::P, GameCommand::TogglePause);
+        key_bindings.insert(Keycode::Space, GameCommand::ToggleDebug);
+        key_bindings.insert(Keycode::M, GameCommand::MuteAudio);
+        key_bindings.insert(Keycode::R, GameCommand::ResetLevel);
+        key_bindings.insert(Keycode::Escape, GameCommand::Exit);
+        key_bindings.insert(Keycode::Q, GameCommand::Exit);
+
+        let movement_keys = HashSet::from([
+            Keycode::W,
+            Keycode::A,
+            Keycode::S,
+            Keycode::D,
+            Keycode::Up,
+            Keycode::Down,
+            Keycode::Left,
+            Keycode::Right,
+        ]);
+
+        Self {
+            key_bindings,
+            movement_keys,
+            pressed_movement_keys: Vec::new(),
+        }
+    }
+}
+
+/// A simplified input event used for deterministic testing and logic reuse
+/// without depending on SDL's event pump.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum SimpleKeyEvent {
+    KeyDown(Keycode),
+    KeyUp(Keycode),
+}
+
+/// Processes a frame's worth of simplified key events and returns the resulting
+/// `GameEvent`s that would be emitted by the input system for that frame.
+///
+/// This mirrors the behavior of `input_system` for keyboard-related logic:
+/// - KeyDown emits the bound command immediately (movement or otherwise)
+/// - Tracks pressed movement keys in order to continue movement on subsequent frames
+/// - KeyUp removes movement keys; if another movement key remains, it resumes
+pub fn process_simple_key_events(bindings: &mut Bindings, frame_events: &[SimpleKeyEvent]) -> Vec<GameEvent> {
+    let mut emitted_events = Vec::new();
+    let mut movement_key_pressed = false;
+
+    for event in frame_events {
+        match *event {
+            SimpleKeyEvent::KeyDown(key) => {
+                if let Some(command) = bindings.key_bindings.get(&key).copied() {
+                    emitted_events.push(GameEvent::Command(command));
+                }
+
+                if bindings.movement_keys.contains(&key) {
+                    movement_key_pressed = true;
+                    if !bindings.pressed_movement_keys.contains(&key) {
+                        bindings.pressed_movement_keys.push(key);
+                    }
+                }
+            }
+            SimpleKeyEvent::KeyUp(key) => {
+                if bindings.movement_keys.contains(&key) {
+                    bindings.pressed_movement_keys.retain(|&k| k != key);
+                }
+            }
+        }
+    }
+
+    if !movement_key_pressed {
+        if let Some(&last_movement_key) = bindings.pressed_movement_keys.last() {
+            if let Some(command) = bindings.key_bindings.get(&last_movement_key).copied() {
+                emitted_events.push(GameEvent::Command(command));
+            }
+        }
+    }
+
+    emitted_events
+}
+
+pub fn input_system(
+    delta_time: Res<DeltaTime>,
+    mut bindings: ResMut<Bindings>,
+    mut writer: EventWriter<GameEvent>,
+    mut pump: NonSendMut<&'static mut EventPump>,
+    mut cursor: ResMut<CursorPosition>,
+) {
+    let mut cursor_seen = false;
+    // Collect all events for this frame.
+    let frame_events: Vec<Event> = pump.poll_iter().collect();
+
+    // Handle non-keyboard events inline and build a simplified keyboard event stream.
+    let mut simple_key_events = Vec::new();
+    for event in &frame_events {
+        match *event {
+            Event::Quit { .. } => {
+                writer.write(GameEvent::Command(GameCommand::Exit));
+            }
+            Event::MouseMotion { x, y, .. } => {
+                *cursor = CursorPosition::Some {
+                    position: Vec2::new(x as f32, y as f32),
+                    remaining_time: 0.20,
+                };
+                cursor_seen = true;
+            }
+            Event::KeyDown {
+                keycode: Some(key),
+                repeat: false,
+                ..
+            } => {
+                simple_key_events.push(SimpleKeyEvent::KeyDown(key));
+            }
+            Event::KeyUp {
+                keycode: Some(key),
+                repeat: false,
+                ..
+            } => {
+                simple_key_events.push(SimpleKeyEvent::KeyUp(key));
+            }
+            _ => {}
+        }
+    }
+
+    // Delegate keyboard handling to shared logic used by tests and production.
+    let emitted = process_simple_key_events(&mut bindings, &simple_key_events);
+    for event in emitted {
+        writer.write(event);
+    }
+
+    if let (false, CursorPosition::Some { remaining_time, .. }) = (cursor_seen, &mut *cursor) {
+        *remaining_time -= delta_time.0;
+        if *remaining_time <= 0.0 {
+            *cursor = CursorPosition::None;
+        }
+    }
+}

src/systems/item.rs

@@ -0,0 +1,74 @@
+use bevy_ecs::{
+    entity::Entity,
+    event::{EventReader, EventWriter},
+    query::With,
+    system::{Commands, Query, ResMut},
+};
+
+use crate::{
+    constants::animation::FRIGHTENED_FLASH_START_TICKS,
+    events::GameEvent,
+    systems::{AudioEvent, EntityType, GhostCollider, GhostState, ItemCollider, PacmanCollider, ScoreResource},
+};
+
+/// Determines if a collision between two entity types should be handled by the item system.
+///
+/// Returns `true` if one entity is a player and the other is a collectible item.
+#[allow(dead_code)]
+pub fn is_valid_item_collision(entity1: EntityType, entity2: EntityType) -> bool {
+    match (entity1, entity2) {
+        (EntityType::Player, entity) | (entity, EntityType::Player) => entity.is_collectible(),
+        _ => false,
+    }
+}
+
+pub fn item_system(
+    mut commands: Commands,
+    mut collision_events: EventReader<GameEvent>,
+    mut score: ResMut<ScoreResource>,
+    pacman_query: Query<Entity, With<PacmanCollider>>,
+    item_query: Query<(Entity, &EntityType), With<ItemCollider>>,
+    mut ghost_query: Query<&mut GhostState, With<GhostCollider>>,
+    mut events: EventWriter<AudioEvent>,
+) {
+    for event in collision_events.read() {
+        if let GameEvent::Collision(entity1, entity2) = event {
+            // Check if one is Pacman and the other is an item
+            let (_pacman_entity, item_entity) = if pacman_query.get(*entity1).is_ok() && item_query.get(*entity2).is_ok() {
+                (*entity1, *entity2)
+            } else if pacman_query.get(*entity2).is_ok() && item_query.get(*entity1).is_ok() {
+                (*entity2, *entity1)
+            } else {
+                continue;
+            };
+
+            // Get the item type and update score
+            if let Ok((item_ent, entity_type)) = item_query.get(item_entity) {
+                if let Some(score_value) = entity_type.score_value() {
+                    score.0 += score_value;
+
+                    // Remove the collected item
+                    commands.entity(item_ent).despawn();
+
+                    // Trigger audio if appropriate
+                    if entity_type.is_collectible() {
+                        events.write(AudioEvent::PlayEat);
+                    }
+
+                    // Make ghosts frightened when power pellet is collected
+                    if *entity_type == EntityType::PowerPellet {
+                        // Convert seconds to frames (assumes 60 FPS)
+                        let total_ticks = 60 * 5; // 5 seconds total
+
+                        // Set all ghosts to frightened state, except those in Eyes state
+                        for mut ghost_state in ghost_query.iter_mut() {
+                            if !matches!(*ghost_state, GhostState::Eyes) {
+                                *ghost_state = GhostState::new_frightened(total_ticks, FRIGHTENED_FLASH_START_TICKS);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/systems/mod.rs

@@ -0,0 +1,32 @@
+//! The Entity-Component-System (ECS) module.
+//!
+//! This module contains all the ECS-related logic, including components, systems,
+//! and resources.
+
+pub mod audio;
+pub mod blinking;
+pub mod collision;
+pub mod components;
+pub mod debug;
+pub mod ghost;
+pub mod input;
+pub mod item;
+pub mod movement;
+pub mod player;
+pub mod profiling;
+pub mod render;
+pub mod stage;
+
+pub use self::audio::*;
+pub use self::blinking::*;
+pub use self::collision::*;
+pub use self::components::*;
+pub use self::debug::*;
+pub use self::ghost::*;
+pub use self::input::*;
+pub use self::item::*;
+pub use self::movement::*;
+pub use self::player::*;
+pub use self::profiling::*;
+pub use self::render::*;
+pub use self::stage::*;

src/systems/movement.rs

@@ -0,0 +1,149 @@
+use crate::error::{EntityError, GameResult};
+use crate::map::direction::Direction;
+use crate::map::graph::Graph;
+use bevy_ecs::component::Component;
+use glam::Vec2;
+
+/// Zero-based index identifying a specific node in the navigation graph.
+///
+/// Nodes represent discrete movement targets in the maze. The index directly corresponds to the node's position in the
+/// graph's internal storage arrays.
+pub type NodeId = u16;
+
+/// A component that represents the speed and cardinal direction of an entity.
+/// Speed is static, only applied when the entity has an edge to traverse.
+/// Direction is dynamic, but is controlled externally.
+#[derive(Component, Debug, Copy, Clone, PartialEq)]
+pub struct Velocity {
+    pub speed: f32,
+    pub direction: Direction,
+}
+
+/// A component that represents a direction change that is only remembered for a period of time.
+/// This is used to allow entities to change direction before they reach their current target node (which consumes their buffered direction).
+#[derive(Component, Debug, Copy, Clone, PartialEq)]
+pub enum BufferedDirection {
+    None,
+    Some { direction: Direction, remaining_time: f32 },
+}
+
+/// Entity position state that handles both stationary entities and moving entities.
+///
+/// Supports precise positioning during movement between discrete navigation nodes.
+/// When moving, entities smoothly interpolate along edges while tracking exact distance remaining to the target node.
+#[derive(Component, Debug, Copy, Clone, PartialEq)]
+pub enum Position {
+    /// Entity is stationary at a specific graph node.
+    Stopped { node: NodeId },
+    /// Entity is traveling between two nodes.
+    Moving {
+        from: NodeId,
+        to: NodeId,
+        /// Distance remaining to reach the target node.
+        remaining_distance: f32,
+    },
+}
+
+impl Position {
+    /// Calculates the current pixel position in the game world.
+    ///
+    /// Converts the graph position to screen coordinates, accounting for
+    /// the board offset and centering the sprite.
+    ///
+    /// # Errors
+    ///
+    /// Returns an `EntityError` if the node or edge is not found.
+    pub fn get_pixel_position(&self, graph: &Graph) -> GameResult<Vec2> {
+        let pos = match &self {
+            Position::Stopped { node } => {
+                // Entity is stationary at a node
+                let node = graph.get_node(*node).ok_or(EntityError::NodeNotFound(*node as usize))?;
+                node.position
+            }
+            Position::Moving {
+                from,
+                to,
+                remaining_distance,
+            } => {
+                // Entity is traveling between nodes
+                let from_node = graph.get_node(*from).ok_or(EntityError::NodeNotFound(*from as usize))?;
+                let to_node = graph.get_node(*to).ok_or(EntityError::NodeNotFound(*to as usize))?;
+                let edge = graph.find_edge(*from, *to).ok_or(EntityError::EdgeNotFound {
+                    from: *from as usize,
+                    to: *to as usize,
+                })?;
+
+                // For zero-distance edges (tunnels), progress >= 1.0 means we're at the target
+                if edge.distance == 0.0 {
+                    to_node.position
+                } else {
+                    // Interpolate position based on progress
+                    let progress = 1.0 - (*remaining_distance / edge.distance);
+                    from_node.position.lerp(to_node.position, progress)
+                }
+            }
+        };
+
+        Ok(Vec2::new(
+            pos.x + crate::constants::BOARD_PIXEL_OFFSET.x as f32,
+            pos.y + crate::constants::BOARD_PIXEL_OFFSET.y as f32,
+        ))
+    }
+
+    /// Advances movement progress by the specified distance with overflow handling.
+    ///
+    /// For moving entities, decreases the remaining distance to the target node.
+    /// If the distance would overshoot the target, the entity transitions to
+    /// `Stopped` state and returns the excess distance for chaining movement
+    /// to the next edge in the same frame.
+    ///
+    /// # Arguments
+    ///
+    /// * `distance` - Distance to travel this frame (typically speed × delta_time)
+    ///
+    /// # Returns
+    ///
+    /// `Some(overflow)` if the target was reached with distance remaining,
+    /// `None` if still moving or already stopped.
+    pub fn tick(&mut self, distance: f32) -> Option<f32> {
+        if distance <= 0.0 || self.is_at_node() {
+            return None;
+        }
+
+        match self {
+            Position::Moving {
+                to, remaining_distance, ..
+            } => {
+                // If the remaining distance is less than or equal the distance, we'll reach the target
+                if *remaining_distance <= distance {
+                    let overflow: Option<f32> = if *remaining_distance != distance {
+                        Some(distance - *remaining_distance)
+                    } else {
+                        None
+                    };
+                    *self = Position::Stopped { node: *to };
+
+                    return overflow;
+                }
+
+                *remaining_distance -= distance;
+
+                None
+            }
+            _ => unreachable!(),
+        }
+    }
+
+    /// Returns `true` if the position is exactly at a node (not traveling).
+    pub fn is_at_node(&self) -> bool {
+        matches!(self, Position::Stopped { .. })
+    }
+
+    /// Returns the `NodeId` of the current node (source of travel if moving).
+    pub fn current_node(&self) -> NodeId {
+        match self {
+            Position::Stopped { node } => *node,
+            Position::Moving { from, .. } => *from,
+        }
+    }
+}

src/systems/player.rs

@@ -0,0 +1,168 @@
+use bevy_ecs::{
+    event::{EventReader, EventWriter},
+    query::{With, Without},
+    system::{Query, Res, ResMut},
+};
+
+use crate::{
+    error::GameError,
+    events::{GameCommand, GameEvent},
+    map::{builder::Map, graph::Edge},
+    systems::{
+        components::{DeltaTime, EntityType, Frozen, GlobalState, MovementModifiers, PlayerControlled},
+        debug::DebugState,
+        movement::{BufferedDirection, Position, Velocity},
+        AudioState,
+    },
+};
+
+pub fn can_traverse(entity_type: EntityType, edge: Edge) -> bool {
+    let entity_flags = entity_type.traversal_flags();
+    edge.traversal_flags.contains(entity_flags)
+}
+
+/// Processes player input commands and updates game state accordingly.
+///
+/// Handles keyboard-driven commands like movement direction changes, debug mode
+/// toggling, audio muting, and game exit requests. Movement commands are buffered
+/// to allow direction changes before reaching intersections, improving gameplay
+/// responsiveness. Non-movement commands immediately modify global game state.
+pub fn player_control_system(
+    mut events: EventReader<GameEvent>,
+    mut state: ResMut<GlobalState>,
+    mut debug_state: ResMut<DebugState>,
+    mut audio_state: ResMut<AudioState>,
+    mut players: Query<&mut BufferedDirection, (With<PlayerControlled>, Without<Frozen>)>,
+    mut errors: EventWriter<GameError>,
+) {
+    // Handle events
+    for event in events.read() {
+        if let GameEvent::Command(command) = event {
+            match command {
+                GameCommand::MovePlayer(direction) => {
+                    // Get the player's movable component (ensuring there is only one player)
+                    let mut buffered_direction = match players.single_mut() {
+                        Ok(tuple) => tuple,
+                        Err(e) => {
+                            errors.write(GameError::InvalidState(format!(
+                                "No/multiple entities queried for player system: {}",
+                                e
+                            )));
+                            return;
+                        }
+                    };
+
+                    *buffered_direction = BufferedDirection::Some {
+                        direction: *direction,
+                        remaining_time: 0.25,
+                    };
+                }
+                GameCommand::Exit => {
+                    state.exit = true;
+                }
+                GameCommand::ToggleDebug => {
+                    debug_state.enabled = !debug_state.enabled;
+                }
+                GameCommand::MuteAudio => {
+                    audio_state.muted = !audio_state.muted;
+                    tracing::info!("Audio {}", if audio_state.muted { "muted" } else { "unmuted" });
+                }
+                _ => {}
+            }
+        }
+    }
+}
+
+/// Executes frame-by-frame movement for Pac-Man.
+///
+/// Handles movement logic including buffered direction changes, edge traversal validation, and continuous movement between nodes.
+/// When stopped, prioritizes buffered directions for responsive controls, falling back to current direction.
+/// Supports movement chaining within a single frame when traveling at high speeds.
+#[allow(clippy::type_complexity)]
+pub fn player_movement_system(
+    map: Res<Map>,
+    delta_time: Res<DeltaTime>,
+    mut entities: Query<
+        (&MovementModifiers, &mut Position, &mut Velocity, &mut BufferedDirection),
+        (With<PlayerControlled>, Without<Frozen>),
+    >,
+) {
+    for (modifiers, mut position, mut velocity, mut buffered_direction) in entities.iter_mut() {
+        // Decrement the buffered direction remaining time
+        if let BufferedDirection::Some {
+            direction,
+            remaining_time,
+        } = *buffered_direction
+        {
+            if remaining_time <= 0.0 {
+                *buffered_direction = BufferedDirection::None;
+            } else {
+                *buffered_direction = BufferedDirection::Some {
+                    direction,
+                    remaining_time: remaining_time - delta_time.0,
+                };
+            }
+        }
+
+        let mut distance = velocity.speed * modifiers.speed_multiplier * 60.0 * delta_time.0;
+
+        loop {
+            match *position {
+                Position::Stopped { .. } => {
+                    // If there is a buffered direction, travel it's edge first if available.
+                    if let BufferedDirection::Some { direction, .. } = *buffered_direction {
+                        // If there's no edge in that direction, ignore the buffered direction.
+                        if let Some(edge) = map.graph.find_edge_in_direction(position.current_node(), direction) {
+                            // If there is an edge in that direction (and it's traversable), start moving towards it and consume the buffered direction.
+                            if can_traverse(EntityType::Player, edge) {
+                                velocity.direction = edge.direction;
+                                *position = Position::Moving {
+                                    from: position.current_node(),
+                                    to: edge.target,
+                                    remaining_distance: edge.distance,
+                                };
+                                *buffered_direction = BufferedDirection::None;
+                            }
+                        }
+                    }
+
+                    // If there is no buffered direction (or it's not yet valid), continue in the current direction.
+                    if let Some(edge) = map.graph.find_edge_in_direction(position.current_node(), velocity.direction) {
+                        if can_traverse(EntityType::Player, edge) {
+                            velocity.direction = edge.direction;
+                            *position = Position::Moving {
+                                from: position.current_node(),
+                                to: edge.target,
+                                remaining_distance: edge.distance,
+                            };
+                        }
+                    } else {
+                        // No edge in our current direction either, erase the buffered direction and stop.
+                        *buffered_direction = BufferedDirection::None;
+                        break;
+                    }
+                }
+                Position::Moving { .. } => {
+                    if let Some(overflow) = position.tick(distance) {
+                        distance = overflow;
+                    } else {
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+
+/// Applies tunnel slowdown based on the current node tile
+pub fn player_tunnel_slowdown_system(map: Res<Map>, mut q: Query<(&Position, &mut MovementModifiers), With<PlayerControlled>>) {
+    if let Ok((position, mut modifiers)) = q.single_mut() {
+        let node = position.current_node();
+        let in_tunnel = map
+            .tile_at_node(node)
+            .map(|t| t == crate::constants::MapTile::Tunnel)
+            .unwrap_or(false);
+        modifiers.tunnel_slowdown_active = in_tunnel;
+        modifiers.speed_multiplier = if in_tunnel { 0.6 } else { 1.0 };
+    }
+}

src/systems/profiling.rs

@@ -0,0 +1,285 @@
+use bevy_ecs::system::IntoSystem;
+use bevy_ecs::{resource::Resource, system::System};
+use circular_buffer::CircularBuffer;
+use micromap::Map;
+use num_width::NumberWidth;
+use parking_lot::{Mutex, RwLock};
+use smallvec::SmallVec;
+use std::fmt::Display;
+use std::time::Duration;
+use strum::EnumCount;
+use strum_macros::{EnumCount, IntoStaticStr};
+use thousands::Separable;
+
+/// The maximum number of systems that can be profiled. Must not be exceeded, or it will panic.
+const MAX_SYSTEMS: usize = SystemId::COUNT;
+/// The number of durations to keep in the circular buffer.
+const TIMING_WINDOW_SIZE: usize = 30;
+
+#[derive(EnumCount, IntoStaticStr, Debug, PartialEq, Eq, Hash, Copy, Clone)]
+pub enum SystemId {
+    Input,
+    PlayerControls,
+    Ghost,
+    Movement,
+    Audio,
+    Blinking,
+    DirectionalRender,
+    LinearRender,
+    DirtyRender,
+    HudRender,
+    Render,
+    DebugRender,
+    Present,
+    Collision,
+    Item,
+    PlayerMovement,
+    GhostCollision,
+    Stage,
+    GhostStateAnimation,
+    EatenGhost,
+}
+
+impl Display for SystemId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", Into::<&'static str>::into(self).to_ascii_lowercase())
+    }
+}
+
+#[derive(Resource, Default, Debug)]
+pub struct SystemTimings {
+    /// Map of system names to a queue of durations, using a circular buffer.
+    ///
+    /// Uses a RwLock to allow multiple readers for the HashMap, and a Mutex on the circular buffer for exclusive access.
+    /// This is probably overkill, but it's fun to play with.
+    ///
+    /// Also, we use a micromap::Map as the number of systems is generally quite small.
+    /// Just make sure to set the capacity appropriately, or it will panic.
+    pub timings: RwLock<Map<SystemId, Mutex<CircularBuffer<TIMING_WINDOW_SIZE, Duration>>, MAX_SYSTEMS>>,
+}
+
+impl SystemTimings {
+    pub fn add_timing(&self, id: SystemId, duration: Duration) {
+        // acquire a upgradable read lock
+        let mut timings = self.timings.upgradable_read();
+
+        // happy path, the name is already in the map (no need to mutate the hashmap)
+        if timings.contains_key(&id) {
+            let queue = timings
+                .get(&id)
+                .expect("System name not found in map after contains_key check");
+            let mut queue = queue.lock();
+
+            queue.push_back(duration);
+            return;
+        }
+
+        // otherwise, acquire a write lock and insert a new queue
+        timings.with_upgraded(|timings| {
+            let queue = timings.entry(id).or_insert_with(|| Mutex::new(CircularBuffer::new()));
+            queue.lock().push_back(duration);
+        });
+    }
+
+    pub fn get_stats(&self) -> Map<SystemId, (Duration, Duration), MAX_SYSTEMS> {
+        let timings = self.timings.read();
+        let mut stats = Map::new();
+
+        for (id, queue) in timings.iter() {
+            if queue.lock().is_empty() {
+                continue;
+            }
+
+            let durations: Vec<f64> = queue.lock().iter().map(|d| d.as_secs_f64() * 1000.0).collect();
+            let count = durations.len() as f64;
+
+            let sum: f64 = durations.iter().sum();
+            let mean = sum / count;
+
+            let variance = durations.iter().map(|x| (x - mean).powi(2)).sum::<f64>() / count;
+            let std_dev = variance.sqrt();
+
+            stats.insert(
+                *id,
+                (
+                    Duration::from_secs_f64(mean / 1000.0),
+                    Duration::from_secs_f64(std_dev / 1000.0),
+                ),
+            );
+        }
+
+        stats
+    }
+
+    pub fn get_total_stats(&self) -> (Duration, Duration) {
+        let duration_sums = {
+            let timings = self.timings.read();
+            timings
+                .iter()
+                .map(|(_, queue)| queue.lock().iter().sum::<Duration>())
+                .collect::<Vec<_>>()
+        };
+
+        let mean = duration_sums.iter().sum::<Duration>() / duration_sums.len() as u32;
+        let variance = duration_sums
+            .iter()
+            .map(|x| {
+                let diff_secs = x.as_secs_f64() - mean.as_secs_f64();
+                diff_secs * diff_secs
+            })
+            .sum::<f64>()
+            / duration_sums.len() as f64;
+        let std_dev_secs = variance.sqrt();
+
+        (mean, Duration::from_secs_f64(std_dev_secs))
+    }
+
+    pub fn format_timing_display(&self) -> SmallVec<[String; SystemId::COUNT]> {
+        let stats = self.get_stats();
+        let (total_avg, total_std) = self.get_total_stats();
+
+        let effective_fps = match 1.0 / total_avg.as_secs_f64() {
+            f if f > 100.0 => (f as u32).separate_with_commas(),
+            f if f < 10.0 => format!("{:.1} FPS", f),
+            f => format!("{:.0} FPS", f),
+        };
+
+        // Collect timing data for formatting
+        let mut timing_data = vec![(effective_fps, total_avg, total_std)];
+
+        // Sort the stats by average duration
+        let mut sorted_stats: Vec<_> = stats.iter().collect();
+        sorted_stats.sort_by(|a, b| b.1 .0.cmp(&a.1 .0));
+
+        // Add the top 5 most expensive systems
+        for (name, (avg, std_dev)) in sorted_stats.iter().take(7) {
+            timing_data.push((name.to_string(), *avg, *std_dev));
+        }
+
+        // Use the formatting module to format the data
+        format_timing_display(timing_data)
+    }
+}
+
+pub fn profile<S, M>(id: SystemId, system: S) -> impl FnMut(&mut bevy_ecs::world::World)
+where
+    S: IntoSystem<(), (), M> + 'static,
+{
+    let mut system: S::System = IntoSystem::into_system(system);
+    let mut is_initialized = false;
+    move |world: &mut bevy_ecs::world::World| {
+        if !is_initialized {
+            system.initialize(world);
+            is_initialized = true;
+        }
+
+        let start = std::time::Instant::now();
+        system.run((), world);
+        let duration = start.elapsed();
+
+        if let Some(timings) = world.get_resource::<SystemTimings>() {
+            timings.add_timing(id, duration);
+        }
+    }
+}
+
+// Helper to split a duration into a integer, decimal, and unit
+fn get_value(duration: &Duration) -> (u64, u32, &'static str) {
+    let (int, decimal, unit) = match duration {
+        // if greater than 1 second, return as seconds
+        n if n >= &Duration::from_secs(1) => {
+            let secs = n.as_secs();
+            let decimal = n.as_millis() as u64 % 1000;
+            (secs, decimal as u32, "s")
+        }
+        // if greater than 1 millisecond, return as milliseconds
+        n if n >= &Duration::from_millis(1) => {
+            let ms = n.as_millis() as u64;
+            let decimal = n.as_micros() as u64 % 1000;
+            (ms, decimal as u32, "ms")
+        }
+        // if greater than 1 microsecond, return as microseconds
+        n if n >= &Duration::from_micros(1) => {
+            let us = n.as_micros() as u64;
+            let decimal = n.as_nanos() as u64 % 1000;
+            (us, decimal as u32, "µs")
+        }
+        // otherwise, return as nanoseconds
+        n => {
+            let ns = n.as_nanos() as u64;
+            (ns, 0, "ns")
+        }
+    };
+
+    (int, decimal, unit)
+}
+
+/// Formats timing data into a vector of strings with proper alignment
+pub fn format_timing_display(
+    timing_data: impl IntoIterator<Item = (String, Duration, Duration)>,
+) -> SmallVec<[String; SystemId::COUNT]> {
+    let mut iter = timing_data.into_iter().peekable();
+    if iter.peek().is_none() {
+        return SmallVec::new();
+    }
+
+    struct Entry {
+        name: String,
+        avg_int: u64,
+        avg_decimal: u32,
+        avg_unit: &'static str,
+        std_int: u64,
+        std_decimal: u32,
+        std_unit: &'static str,
+    }
+
+    let entries = iter
+        .map(|(name, avg, std_dev)| {
+            let (avg_int, avg_decimal, avg_unit) = get_value(&avg);
+            let (std_int, std_decimal, std_unit) = get_value(&std_dev);
+
+            Entry {
+                name: name.clone(),
+                avg_int,
+                avg_decimal,
+                avg_unit,
+                std_int,
+                std_decimal,
+                std_unit,
+            }
+        })
+        .collect::<SmallVec<[Entry; 12]>>();
+
+    let (max_name_width, max_avg_int_width, max_avg_decimal_width, max_std_int_width, max_std_decimal_width) = entries
+        .iter()
+        .fold((0, 0, 3, 0, 3), |(name_w, avg_int_w, avg_dec_w, std_int_w, std_dec_w), e| {
+            (
+                name_w.max(e.name.len()),
+                avg_int_w.max(e.avg_int.width() as usize),
+                avg_dec_w.max(e.avg_decimal.width() as usize),
+                std_int_w.max(e.std_int.width() as usize),
+                std_dec_w.max(e.std_decimal.width() as usize),
+            )
+        });
+
+    entries.iter().map(|e| {
+            format!(
+                "{name:max_name_width$} : {avg_int:max_avg_int_width$}.{avg_decimal:<max_avg_decimal_width$}{avg_unit} ± {std_int:max_std_int_width$}.{std_decimal:<max_std_decimal_width$}{std_unit}",
+                // Content
+                name = e.name,
+                avg_int = e.avg_int,
+                avg_decimal = e.avg_decimal,
+                std_int = e.std_int,
+                std_decimal = e.std_decimal,
+                // Units
+                avg_unit = e.avg_unit,
+                std_unit = e.std_unit,
+                // Padding
+                max_name_width = max_name_width,
+                max_avg_int_width = max_avg_int_width,
+                max_avg_decimal_width = max_avg_decimal_width,
+                max_std_int_width = max_std_int_width,
+                max_std_decimal_width = max_std_decimal_width
+            )
+        }).collect::<SmallVec<[String; SystemId::COUNT]>>()
+}

src/systems/render.rs

@@ -0,0 +1,252 @@
+use crate::constants::CANVAS_SIZE;
+use crate::error::{GameError, TextureError};
+use crate::map::builder::Map;
+use crate::systems::{
+    DebugState, DebugTextureResource, DeltaTime, DirectionalAnimation, LinearAnimation, Position, Renderable, ScoreResource,
+    StartupSequence, Velocity,
+};
+use crate::texture::sprite::SpriteAtlas;
+use crate::texture::text::TextTexture;
+use bevy_ecs::component::Component;
+use bevy_ecs::entity::Entity;
+use bevy_ecs::event::EventWriter;
+use bevy_ecs::query::{Changed, Or, Without};
+use bevy_ecs::removal_detection::RemovedComponents;
+use bevy_ecs::resource::Resource;
+use bevy_ecs::system::{NonSendMut, Query, Res, ResMut};
+use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
+use sdl2::render::{BlendMode, Canvas, Texture};
+use sdl2::video::Window;
+
+#[derive(Resource, Default)]
+pub struct RenderDirty(pub bool);
+
+#[derive(Component)]
+pub struct Hidden;
+
+#[allow(clippy::type_complexity)]
+pub fn dirty_render_system(
+    mut dirty: ResMut<RenderDirty>,
+    changed: Query<(), Or<(Changed<Renderable>, Changed<Position>)>>,
+    removed_hidden: RemovedComponents<Hidden>,
+    removed_renderables: RemovedComponents<Renderable>,
+) {
+    if !changed.is_empty() || !removed_hidden.is_empty() || !removed_renderables.is_empty() {
+        dirty.0 = true;
+    }
+}
+
+/// Updates directional animated entities with synchronized timing across directions.
+///
+/// This runs before the render system to update sprites based on current direction and movement state.
+/// All directions share the same frame timing to ensure perfect synchronization.
+pub fn directional_render_system(
+    dt: Res<DeltaTime>,
+    mut query: Query<(&Position, &Velocity, &mut DirectionalAnimation, &mut Renderable)>,
+) {
+    let ticks = (dt.0 * 60.0).round() as u16; // Convert from seconds to ticks at 60 ticks/sec
+
+    for (position, velocity, mut anim, mut renderable) in query.iter_mut() {
+        let stopped = matches!(position, Position::Stopped { .. });
+
+        // Only tick animation when moving to preserve stopped frame
+        if !stopped {
+            // Tick shared animation state
+            anim.time_bank += ticks;
+            while anim.time_bank >= anim.frame_duration {
+                anim.time_bank -= anim.frame_duration;
+                anim.current_frame += 1;
+            }
+        }
+
+        // Get tiles for current direction and movement state
+        let tiles = if stopped {
+            anim.stopped_tiles.get(velocity.direction)
+        } else {
+            anim.moving_tiles.get(velocity.direction)
+        };
+
+        if !tiles.is_empty() {
+            let new_tile = tiles.get_tile(anim.current_frame);
+            if renderable.sprite != new_tile {
+                renderable.sprite = new_tile;
+            }
+        }
+    }
+}
+
+/// Updates linear animated entities (used for non-directional animations like frightened ghosts).
+///
+/// This system handles entities that use LinearAnimation component for simple frame cycling.
+pub fn linear_render_system(dt: Res<DeltaTime>, mut query: Query<(&mut LinearAnimation, &mut Renderable)>) {
+    let ticks = (dt.0 * 60.0).round() as u16; // Convert from seconds to ticks at 60 ticks/sec
+
+    for (mut anim, mut renderable) in query.iter_mut() {
+        // Tick animation
+        anim.time_bank += ticks;
+        while anim.time_bank >= anim.frame_duration {
+            anim.time_bank -= anim.frame_duration;
+            anim.current_frame += 1;
+        }
+
+        if !anim.tiles.is_empty() {
+            let new_tile = anim.tiles.get_tile(anim.current_frame);
+            if renderable.sprite != new_tile {
+                renderable.sprite = new_tile;
+            }
+        }
+    }
+}
+
+/// A non-send resource for the map texture. This just wraps the texture with a type so it can be differentiated when exposed as a resource.
+pub struct MapTextureResource(pub Texture<'static>);
+
+/// A non-send resource for the backbuffer texture. This just wraps the texture with a type so it can be differentiated when exposed as a resource.
+pub struct BackbufferResource(pub Texture<'static>);
+
+/// Renders the HUD (score, lives, etc.) on top of the game.
+pub fn hud_render_system(
+    mut backbuffer: NonSendMut<BackbufferResource>,
+    mut canvas: NonSendMut<&mut Canvas<Window>>,
+    mut atlas: NonSendMut<SpriteAtlas>,
+    score: Res<ScoreResource>,
+    startup: Res<StartupSequence>,
+    mut errors: EventWriter<GameError>,
+) {
+    let _ = canvas.with_texture_canvas(&mut backbuffer.0, |canvas| {
+        let mut text_renderer = TextTexture::new(1.0);
+
+        // Render lives and high score text in white
+        let lives = 3; // TODO: Get from actual lives resource
+        let lives_text = format!("{lives}UP   HIGH SCORE   ");
+        let lives_position = glam::UVec2::new(4 + 8 * 3, 2); // x_offset + lives_offset * 8, y_offset
+
+        if let Err(e) = text_renderer.render(canvas, &mut atlas, &lives_text, lives_position) {
+            errors.write(TextureError::RenderFailed(format!("Failed to render lives text: {}", e)).into());
+        }
+
+        // Render score text
+        let score_text = format!("{:02}", score.0);
+        let score_offset = 7 - (score_text.len() as i32);
+        let score_position = glam::UVec2::new(4 + 8 * score_offset as u32, 10); // x_offset + score_offset * 8, 8 + y_offset
+
+        if let Err(e) = text_renderer.render(canvas, &mut atlas, &score_text, score_position) {
+            errors.write(TextureError::RenderFailed(format!("Failed to render score text: {}", e)).into());
+        }
+
+        // Render high score text
+        let high_score_text = format!("{:02}", score.0);
+        let high_score_offset = 17 - (high_score_text.len() as i32);
+        let high_score_position = glam::UVec2::new(4 + 8 * high_score_offset as u32, 10); // x_offset + score_offset * 8, 8 + y_offset
+        if let Err(e) = text_renderer.render(canvas, &mut atlas, &high_score_text, high_score_position) {
+            errors.write(TextureError::RenderFailed(format!("Failed to render high score text: {}", e)).into());
+        }
+
+        // Render text based on StartupSequence stage
+        if matches!(
+            *startup,
+            StartupSequence::TextOnly { .. } | StartupSequence::CharactersVisible { .. }
+        ) {
+            let ready_text = "READY!";
+            let ready_width = text_renderer.text_width(ready_text);
+            let ready_position = glam::UVec2::new((CANVAS_SIZE.x - ready_width) / 2, 160);
+            if let Err(e) = text_renderer.render_with_color(canvas, &mut atlas, ready_text, ready_position, Color::YELLOW) {
+                errors.write(TextureError::RenderFailed(format!("Failed to render READY text: {}", e)).into());
+            }
+
+            if matches!(*startup, StartupSequence::TextOnly { .. }) {
+                let player_one_text = "PLAYER ONE";
+                let player_one_width = text_renderer.text_width(player_one_text);
+                let player_one_position = glam::UVec2::new((CANVAS_SIZE.x - player_one_width) / 2, 113);
+
+                if let Err(e) =
+                    text_renderer.render_with_color(canvas, &mut atlas, player_one_text, player_one_position, Color::CYAN)
+                {
+                    errors.write(TextureError::RenderFailed(format!("Failed to render PLAYER ONE text: {}", e)).into());
+                }
+            }
+        }
+    });
+}
+
+#[allow(clippy::too_many_arguments)]
+pub fn render_system(
+    mut canvas: NonSendMut<&mut Canvas<Window>>,
+    map_texture: NonSendMut<MapTextureResource>,
+    mut backbuffer: NonSendMut<BackbufferResource>,
+    mut atlas: NonSendMut<SpriteAtlas>,
+    map: Res<Map>,
+    dirty: Res<RenderDirty>,
+    renderables: Query<(Entity, &Renderable, &Position), Without<Hidden>>,
+    mut errors: EventWriter<GameError>,
+) {
+    if !dirty.0 {
+        return;
+    }
+    // Render to backbuffer
+    canvas
+        .with_texture_canvas(&mut backbuffer.0, |backbuffer_canvas| {
+            // Clear the backbuffer
+            backbuffer_canvas.set_draw_color(sdl2::pixels::Color::BLACK);
+            backbuffer_canvas.clear();
+
+            // Copy the pre-rendered map texture to the backbuffer
+            if let Err(e) = backbuffer_canvas.copy(&map_texture.0, None, None) {
+                errors.write(TextureError::RenderFailed(e.to_string()).into());
+            }
+
+            // Render all entities to the backbuffer
+            for (_, renderable, position) in renderables
+                .iter()
+                .sort_by_key::<(Entity, &Renderable, &Position), _>(|(_, renderable, _)| renderable.layer)
+                .rev()
+            {
+                let pos = position.get_pixel_position(&map.graph);
+                match pos {
+                    Ok(pos) => {
+                        let dest = Rect::from_center(
+                            Point::from((pos.x as i32, pos.y as i32)),
+                            renderable.sprite.size.x as u32,
+                            renderable.sprite.size.y as u32,
+                        );
+
+                        renderable
+                            .sprite
+                            .render(backbuffer_canvas, &mut atlas, dest)
+                            .err()
+                            .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
+                    }
+                    Err(e) => {
+                        errors.write(e);
+                    }
+                }
+            }
+        })
+        .err()
+        .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
+
+    canvas.copy(&backbuffer.0, None, None).unwrap();
+}
+
+pub fn present_system(
+    mut canvas: NonSendMut<&mut Canvas<Window>>,
+    mut dirty: ResMut<RenderDirty>,
+    backbuffer: NonSendMut<BackbufferResource>,
+    debug_texture: NonSendMut<DebugTextureResource>,
+    debug_state: Res<DebugState>,
+) {
+    if dirty.0 {
+        // Copy the backbuffer to the main canvas
+        canvas.copy(&backbuffer.0, None, None).unwrap();
+
+        // Copy the debug texture to the canvas
+        if debug_state.enabled {
+            canvas.set_blend_mode(BlendMode::Blend);
+            canvas.copy(&debug_texture.0, None, None).unwrap();
+        }
+
+        canvas.present();
+        dirty.0 = false;
+    }
+}

src/systems/stage.rs

@@ -0,0 +1,101 @@
+use bevy_ecs::{
+    entity::Entity,
+    query::With,
+    resource::Resource,
+    system::{Commands, Query, ResMut},
+};
+use tracing::debug;
+
+use crate::systems::{Blinking, Frozen, GhostCollider, Hidden, PlayerControlled};
+
+#[derive(Resource, Debug, Clone, Copy)]
+pub enum StartupSequence {
+    /// Stage 1: Text-only stage
+    /// - Player & ghosts are hidden
+    /// - READY! and PLAYER ONE text are shown
+    /// - Energizers do not blink
+    TextOnly {
+        /// Remaining ticks in this stage
+        remaining_ticks: u32,
+    },
+    /// Stage 2: Characters visible stage
+    /// - PLAYER ONE text is hidden, READY! text remains
+    /// - Ghosts and Pac-Man are now shown
+    CharactersVisible {
+        /// Remaining ticks in this stage
+        remaining_ticks: u32,
+    },
+    /// Stage 3: Game begins
+    /// - Final state, game is fully active
+    GameActive,
+}
+
+impl StartupSequence {
+    /// Creates a new StartupSequence with the specified duration in ticks
+    pub fn new(text_only_ticks: u32, _characters_visible_ticks: u32) -> Self {
+        Self::TextOnly {
+            remaining_ticks: text_only_ticks,
+        }
+    }
+
+    /// Ticks the timer by one frame, returning transition information if state changes
+    pub fn tick(&mut self) -> Option<(StartupSequence, StartupSequence)> {
+        match self {
+            StartupSequence::TextOnly { remaining_ticks } => {
+                if *remaining_ticks > 0 {
+                    *remaining_ticks -= 1;
+                    None
+                } else {
+                    let from = *self;
+                    *self = StartupSequence::CharactersVisible {
+                        remaining_ticks: 60, // 1 second at 60 FPS
+                    };
+                    Some((from, *self))
+                }
+            }
+            StartupSequence::CharactersVisible { remaining_ticks } => {
+                if *remaining_ticks > 0 {
+                    *remaining_ticks -= 1;
+                    None
+                } else {
+                    let from = *self;
+                    *self = StartupSequence::GameActive;
+                    Some((from, *self))
+                }
+            }
+            StartupSequence::GameActive => None,
+        }
+    }
+}
+
+/// Handles startup sequence transitions and component management
+pub fn startup_stage_system(
+    mut startup: ResMut<StartupSequence>,
+    mut commands: Commands,
+    mut blinking_query: Query<Entity, With<Blinking>>,
+    mut player_query: Query<Entity, With<PlayerControlled>>,
+    mut ghost_query: Query<Entity, With<GhostCollider>>,
+) {
+    if let Some((from, to)) = startup.tick() {
+        debug!("StartupSequence transition from {from:?} to {to:?}");
+        match (from, to) {
+            (StartupSequence::TextOnly { .. }, StartupSequence::CharactersVisible { .. }) => {
+                // Unhide the player & ghosts
+                for entity in player_query.iter_mut().chain(ghost_query.iter_mut()) {
+                    commands.entity(entity).remove::<Hidden>();
+                }
+            }
+            (StartupSequence::CharactersVisible { .. }, StartupSequence::GameActive) => {
+                // Unfreeze the player & ghosts & pellet blinking
+                for entity in player_query
+                    .iter_mut()
+                    .chain(ghost_query.iter_mut())
+                    .chain(blinking_query.iter_mut())
+                {
+                    commands.entity(entity).remove::<Frozen>();
+                }
+            }
+            _ => {}
+        }
+    }
+}

src/texture/animated.rs

@@ -1,72 +1,73 @@
-use sdl2::rect::Rect;
-use sdl2::render::{Canvas, RenderTarget};
+use crate::map::direction::Direction;
+use crate::texture::sprite::AtlasTile;
 
-use crate::error::{AnimatedTextureError, GameError, GameResult, TextureError};
-use crate::texture::sprite::{AtlasTile, SpriteAtlas};
-
-#[derive(Debug, Clone)]
-pub struct AnimatedTexture {
-    tiles: Vec<AtlasTile>,
-    frame_duration: f32,
-    current_frame: usize,
-    time_bank: f32,
+/// Fixed-size tile sequence that avoids heap allocation
+#[derive(Clone, Copy, Debug)]
+pub struct TileSequence {
+    tiles: [AtlasTile; 4], // Fixed array, max 4 frames
+    count: usize,          // Actual number of frames used
 }
 
-impl AnimatedTexture {
-    pub fn new(tiles: Vec<AtlasTile>, frame_duration: f32) -> GameResult<Self> {
-        if frame_duration <= 0.0 {
-            return Err(GameError::Texture(TextureError::Animated(
-                AnimatedTextureError::InvalidFrameDuration(frame_duration),
-            )));
-        }
+impl TileSequence {
+    /// Creates a new tile sequence from a slice of tiles
+    pub fn new(tiles: &[AtlasTile]) -> Self {
+        let mut tile_array = [AtlasTile {
+            pos: glam::U16Vec2::ZERO,
+            size: glam::U16Vec2::ZERO,
+            color: None,
+        }; 4];
 
-        Ok(Self {
-            tiles,
-            frame_duration,
-            current_frame: 0,
-            time_bank: 0.0,
-        })
-    }
+        let count = tiles.len().min(4);
+        tile_array[..count].copy_from_slice(&tiles[..count]);
 
-    pub fn tick(&mut self, dt: f32) {
-        self.time_bank += dt;
-        while self.time_bank >= self.frame_duration {
-            self.time_bank -= self.frame_duration;
-            self.current_frame = (self.current_frame + 1) % self.tiles.len();
+        Self {
+            tiles: tile_array,
+            count,
         }
     }
 
-    pub fn current_tile(&self) -> &AtlasTile {
-        &self.tiles[self.current_frame]
+    /// Returns the tile at the given frame index, wrapping if necessary
+    pub fn get_tile(&self, frame: usize) -> AtlasTile {
+        if self.count == 0 {
+            // Return a default empty tile if no tiles
+            AtlasTile {
+                pos: glam::U16Vec2::ZERO,
+                size: glam::U16Vec2::ZERO,
+                color: None,
+            }
+        } else {
+            self.tiles[frame % self.count]
+        }
     }
 
-    pub fn render<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, dest: Rect) -> GameResult<()> {
-        let mut tile = *self.current_tile();
-        tile.render(canvas, atlas, dest)?;
-        Ok(())
-    }
-
-    /// Returns the current frame index.
-    #[allow(dead_code)]
-    pub fn current_frame(&self) -> usize {
-        self.current_frame
-    }
-
-    /// Returns the time bank.
-    #[allow(dead_code)]
-    pub fn time_bank(&self) -> f32 {
-        self.time_bank
-    }
-
-    /// Returns the frame duration.
-    #[allow(dead_code)]
-    pub fn frame_duration(&self) -> f32 {
-        self.frame_duration
-    }
-
-    /// Returns the number of tiles in the animation.
-    #[allow(dead_code)]
-    pub fn tiles_len(&self) -> usize {
-        self.tiles.len()
+    /// Returns true if this sequence has no tiles
+    pub fn is_empty(&self) -> bool {
+        self.count == 0
+    }
+}
+
+/// Type-safe directional tile storage with named fields
+#[derive(Clone, Copy, Debug)]
+pub struct DirectionalTiles {
+    pub up: TileSequence,
+    pub down: TileSequence,
+    pub left: TileSequence,
+    pub right: TileSequence,
+}
+
+impl DirectionalTiles {
+    /// Creates a new DirectionalTiles with different sequences per direction
+    pub fn new(up: TileSequence, down: TileSequence, left: TileSequence, right: TileSequence) -> Self {
+        Self { up, down, left, right }
+    }
+
+    /// Gets the tile sequence for the given direction
+    pub fn get(&self, direction: Direction) -> &TileSequence {
+        match direction {
+            Direction::Up => &self.up,
+            Direction::Down => &self.down,
+            Direction::Left => &self.left,
+            Direction::Right => &self.right,
+        }
     }
 }

src/texture/directional.rs

@@ -1,80 +0,0 @@
-use sdl2::rect::Rect;
-use sdl2::render::{Canvas, RenderTarget};
-
-use crate::entity::direction::Direction;
-use crate::error::GameResult;
-use crate::texture::animated::AnimatedTexture;
-use crate::texture::sprite::SpriteAtlas;
-
-#[derive(Clone)]
-pub struct DirectionalAnimatedTexture {
-    textures: [Option<AnimatedTexture>; 4],
-    stopped_textures: [Option<AnimatedTexture>; 4],
-}
-
-impl DirectionalAnimatedTexture {
-    pub fn new(textures: [Option<AnimatedTexture>; 4], stopped_textures: [Option<AnimatedTexture>; 4]) -> Self {
-        Self {
-            textures,
-            stopped_textures,
-        }
-    }
-
-    pub fn tick(&mut self, dt: f32) {
-        for texture in self.textures.iter_mut().flatten() {
-            texture.tick(dt);
-        }
-    }
-
-    pub fn render<T: RenderTarget>(
-        &self,
-        canvas: &mut Canvas<T>,
-        atlas: &mut SpriteAtlas,
-        dest: Rect,
-        direction: Direction,
-    ) -> GameResult<()> {
-        if let Some(texture) = &self.textures[direction.as_usize()] {
-            texture.render(canvas, atlas, dest)
-        } else {
-            Ok(())
-        }
-    }
-
-    pub fn render_stopped<T: RenderTarget>(
-        &self,
-        canvas: &mut Canvas<T>,
-        atlas: &mut SpriteAtlas,
-        dest: Rect,
-        direction: Direction,
-    ) -> GameResult<()> {
-        if let Some(texture) = &self.stopped_textures[direction.as_usize()] {
-            texture.render(canvas, atlas, dest)
-        } else {
-            Ok(())
-        }
-    }
-
-    /// Returns true if the texture has a direction.
-    #[allow(dead_code)]
-    pub fn has_direction(&self, direction: Direction) -> bool {
-        self.textures[direction.as_usize()].is_some()
-    }
-
-    /// Returns true if the texture has a stopped direction.
-    #[allow(dead_code)]
-    pub fn has_stopped_direction(&self, direction: Direction) -> bool {
-        self.stopped_textures[direction.as_usize()].is_some()
-    }
-
-    /// Returns the number of textures.
-    #[allow(dead_code)]
-    pub fn texture_count(&self) -> usize {
-        self.textures.iter().filter(|t| t.is_some()).count()
-    }
-
-    /// Returns the number of stopped textures.
-    #[allow(dead_code)]
-    pub fn stopped_texture_count(&self) -> usize {
-        self.stopped_textures.iter().filter(|t| t.is_some()).count()
-    }
-}

src/texture/mod.rs

@@ -1,5 +1,4 @@
 pub mod animated;
 pub mod blinking;
-pub mod directional;
 pub mod sprite;
 pub mod text;

src/texture/sprite.rs

@@ -1,55 +1,26 @@
 use anyhow::Result;
-use bevy_ecs::resource::Resource;
 use glam::U16Vec2;
 use sdl2::pixels::Color;
 use sdl2::rect::Rect;
 use sdl2::render::{Canvas, RenderTarget, Texture};
-use serde::Deserialize;
 use std::collections::HashMap;
 
 use crate::error::TextureError;
 
-/// A simple sprite for stationary items like pellets and energizers.
+/// Atlas frame mapping data loaded from JSON metadata files.
 #[derive(Clone, Debug)]
-pub struct Sprite {
-    pub atlas_tile: AtlasTile,
-}
-
-impl Sprite {
-    pub fn new(atlas_tile: AtlasTile) -> Self {
-        Self { atlas_tile }
-    }
-
-    pub fn render<C: RenderTarget>(
-        &self,
-        canvas: &mut Canvas<C>,
-        atlas: &mut SpriteAtlas,
-        position: glam::Vec2,
-    ) -> Result<(), TextureError> {
-        let dest = crate::helpers::centered_with_size(
-            glam::IVec2::new(position.x as i32, position.y as i32),
-            glam::UVec2::new(self.atlas_tile.size.x as u32, self.atlas_tile.size.y as u32),
-        );
-        let mut tile = self.atlas_tile;
-        tile.render(canvas, atlas, dest)?;
-        Ok(())
-    }
-}
-
-#[derive(Clone, Debug, Deserialize)]
 pub struct AtlasMapper {
+    /// Mapping from sprite name to frame bounds within the atlas texture
     pub frames: HashMap<String, MapperFrame>,
 }
 
-#[derive(Copy, Clone, Debug, Deserialize)]
+#[derive(Copy, Clone, Debug)]
 pub struct MapperFrame {
-    pub x: u16,
-    pub y: u16,
-    pub width: u16,
-    pub height: u16,
+    pub pos: U16Vec2,
+    pub size: U16Vec2,
 }
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 pub struct AtlasTile {
     pub pos: U16Vec2,
     pub size: U16Vec2,
@@ -58,7 +29,7 @@ pub struct AtlasTile {
 
 impl AtlasTile {
     pub fn render<C: RenderTarget>(
-        &mut self,
+        &self,
         canvas: &mut Canvas<C>,
         atlas: &mut SpriteAtlas,
         dest: Rect,
@@ -69,7 +40,7 @@ impl AtlasTile {
     }
 
     pub fn render_with_color<C: RenderTarget>(
-        &mut self,
+        &self,
         canvas: &mut Canvas<C>,
         atlas: &mut SpriteAtlas,
         dest: Rect,
@@ -100,10 +71,19 @@ impl AtlasTile {
     }
 }
 
+/// High-performance sprite atlas providing fast texture region lookups and rendering.
+///
+/// Combines a single large texture with metadata mapping to enable efficient
+/// sprite rendering without texture switching. Caches color modulation state
+/// to minimize redundant SDL2 calls and supports both named sprite lookups
+/// and optional default color modulation configuration.
 pub struct SpriteAtlas {
+    /// The combined texture containing all sprite frames
     texture: Texture<'static>,
+    /// Mapping from sprite names to their pixel coordinates within the texture
     tiles: HashMap<String, MapperFrame>,
     default_color: Option<Color>,
+    /// Cached color modulation state to avoid redundant SDL2 calls
     last_modulation: Option<Color>,
 }
 
@@ -117,10 +97,16 @@ impl SpriteAtlas {
         }
     }
 
+    /// Retrieves a sprite tile by name from the atlas with fast HashMap lookup.
+    ///
+    /// Returns an `AtlasTile` containing the texture coordinates and dimensions
+    /// for the named sprite, or `None` if the sprite name is not found in the
+    /// atlas. The returned tile can be used for immediate rendering or stored
+    /// for repeated use in animations and entity sprites.
     pub fn get_tile(&self, name: &str) -> Option<AtlasTile> {
         self.tiles.get(name).map(|frame| AtlasTile {
-            pos: U16Vec2::new(frame.x, frame.y),
-            size: U16Vec2::new(frame.width, frame.height),
+            pos: frame.pos,
+            size: frame.size,
             color: None,
         })
     }

src/texture/text.rs

@@ -10,10 +10,20 @@
 //!
 //! ```rust
 //! use pacman::texture::text::TextTexture;
+//! use sdl2::pixels::Color;
 //!
 //! // Create a text texture with 1.0 scale (8x8 pixels per character)
 //! let mut text_renderer = TextTexture::new(1.0);
 //!
+//! // Set default color for all text
+//! text_renderer.set_color(Color::WHITE);
+//!
+//! // Render text with default color
+//! text_renderer.render(&mut canvas, &mut atlas, "Hello", position)?;
+//!
+//! // Render text with specific color
+//! text_renderer.render_with_color(&mut canvas, &mut atlas, "World", position, Color::YELLOW)?;
+//!
 //! // Set scale for larger text
 //! text_renderer.set_scale(2.0);
 //!
@@ -46,6 +56,7 @@
 use anyhow::Result;
 use glam::UVec2;
 
+use sdl2::pixels::Color;
 use sdl2::render::{Canvas, RenderTarget};
 use std::collections::HashMap;
 
@@ -79,6 +90,7 @@ fn char_to_tile_name(c: char) -> Option<String> {
 pub struct TextTexture {
     char_map: HashMap<char, AtlasTile>,
     scale: f32,
+    default_color: Option<Color>,
 }
 
 impl Default for TextTexture {
@@ -86,6 +98,7 @@ impl Default for TextTexture {
         Self {
             scale: 1.0,
             char_map: Default::default(),
+            default_color: None,
         }
     }
 }
@@ -103,9 +116,9 @@ impl TextTexture {
         &self.char_map
     }
 
-    pub fn get_tile(&mut self, c: char, atlas: &mut SpriteAtlas) -> Result<Option<&mut AtlasTile>> {
+    pub fn get_tile(&mut self, c: char, atlas: &mut SpriteAtlas) -> Result<Option<&AtlasTile>> {
         if self.char_map.contains_key(&c) {
-            return Ok(self.char_map.get_mut(&c));
+            return Ok(self.char_map.get(&c));
         }
 
         if let Some(tile_name) = char_to_tile_name(c) {
@@ -113,19 +126,32 @@ impl TextTexture {
                 .get_tile(&tile_name)
                 .ok_or(GameError::Texture(TextureError::AtlasTileNotFound(tile_name)))?;
             self.char_map.insert(c, tile);
-            Ok(self.char_map.get_mut(&c))
+            Ok(self.char_map.get(&c))
         } else {
             Ok(None)
         }
     }
 
-    /// Renders a string of text at the given position.
+    /// Renders a string of text at the given position using the default color.
     pub fn render<C: RenderTarget>(
         &mut self,
         canvas: &mut Canvas<C>,
         atlas: &mut SpriteAtlas,
         text: &str,
         position: UVec2,
+    ) -> Result<()> {
+        let color = self.default_color.unwrap_or(Color::WHITE);
+        self.render_with_color(canvas, atlas, text, position, color)
+    }
+
+    /// Renders a string of text at the given position with a specific color.
+    pub fn render_with_color<C: RenderTarget>(
+        &mut self,
+        canvas: &mut Canvas<C>,
+        atlas: &mut SpriteAtlas,
+        text: &str,
+        position: UVec2,
+        color: Color,
     ) -> Result<()> {
         let mut x_offset = 0;
         let char_width = (8.0 * self.scale) as u32;
@@ -134,9 +160,9 @@ impl TextTexture {
         for c in text.chars() {
             // Get the tile from the char_map, or insert it if it doesn't exist
             if let Some(tile) = self.get_tile(c, atlas)? {
-                // Render the tile if it exists
+                // Render the tile with the specified color
                 let dest = sdl2::rect::Rect::new((position.x + x_offset) as i32, position.y as i32, char_width, char_height);
-                tile.render(canvas, atlas, dest)?;
+                tile.render_with_color(canvas, atlas, dest, color)?;
             }
 
             // Always advance x_offset for all characters (including spaces)
@@ -146,6 +172,16 @@ impl TextTexture {
         Ok(())
     }
 
+    /// Sets the default color for text rendering.
+    pub fn set_color(&mut self, color: Color) {
+        self.default_color = Some(color);
+    }
+
+    /// Gets the current default color.
+    pub fn color(&self) -> Option<Color> {
+        self.default_color
+    }
+
     /// Sets the scale for text rendering.
     pub fn set_scale(&mut self, scale: f32) {
         self.scale = scale;

tests/animated.rs

@@ -1,62 +1,57 @@
-use glam::U16Vec2;
-use pacman::error::{AnimatedTextureError, GameError, TextureError};
-use pacman::texture::animated::AnimatedTexture;
-use pacman::texture::sprite::AtlasTile;
-use sdl2::pixels::Color;
+// use glam::U16Vec2;
+// use pacman::error::{AnimatedTextureError, GameError, TextureError};
+// use pacman::texture::sprite::AtlasTile;
+// use sdl2::pixels::Color;
+// use smallvec::smallvec;
 
-fn mock_atlas_tile(id: u32) -> AtlasTile {
-    AtlasTile {
-        pos: U16Vec2::new(0, 0),
-        size: U16Vec2::new(16, 16),
-        color: Some(Color::RGB(id as u8, 0, 0)),
-    }
-}
+// fn mock_atlas_tile(id: u32) -> AtlasTile {
+//     AtlasTile {
+//         pos: U16Vec2::new(0, 0),
+//         size: U16Vec2::new(16, 16),
+//         color: Some(Color::RGB(id as u8, 0, 0)),
+//     }
+// }
 
-#[test]
-fn test_animated_texture_creation_errors() {
-    let tiles = vec![mock_atlas_tile(1), mock_atlas_tile(2)];
+// #[test]
+// fn test_animated_texture_creation_errors() {
+//     let tiles = smallvec![mock_atlas_tile(1), mock_atlas_tile(2)];
 
-    assert!(matches!(
-        AnimatedTexture::new(tiles.clone(), 0.0).unwrap_err(),
-        GameError::Texture(TextureError::Animated(AnimatedTextureError::InvalidFrameDuration(0.0)))
-    ));
+//     assert!(matches!(
+//         AnimatedTexture::new(tiles.clone(), 0).unwrap_err(),
+//         GameError::Texture(TextureError::Animated(AnimatedTextureError::InvalidFrameDuration(0)))
+//     ));
+// }
 
-    assert!(matches!(
-        AnimatedTexture::new(tiles, -0.1).unwrap_err(),
-        GameError::Texture(TextureError::Animated(AnimatedTextureError::InvalidFrameDuration(-0.1)))
-    ));
-}
+// #[test]
+// fn test_animated_texture_advancement() {
+//     let tiles = smallvec![mock_atlas_tile(1), mock_atlas_tile(2), mock_atlas_tile(3)];
+//     let mut texture = AnimatedTexture::new(tiles, 10).unwrap();
 
-#[test]
-fn test_animated_texture_advancement() {
-    let tiles = vec![mock_atlas_tile(1), mock_atlas_tile(2), mock_atlas_tile(3)];
-    let mut texture = AnimatedTexture::new(tiles, 0.1).unwrap();
+//     assert_eq!(texture.current_frame(), 0);
 
-    assert_eq!(texture.current_frame(), 0);
+//     texture.tick(25);
+//     assert_eq!(texture.current_frame(), 2);
+//     assert_eq!(texture.time_bank(), 5);
+// }
 
-    texture.tick(0.25);
-    assert_eq!(texture.current_frame(), 2);
-    assert!((texture.time_bank() - 0.05).abs() < 0.001);
-}
+// #[test]
+// fn test_animated_texture_wrap_around() {
+//     let tiles = smallvec![mock_atlas_tile(1), mock_atlas_tile(2)];
+//     let mut texture = AnimatedTexture::new(tiles, 10).unwrap();
 
-#[test]
-fn test_animated_texture_wrap_around() {
-    let tiles = vec![mock_atlas_tile(1), mock_atlas_tile(2)];
-    let mut texture = AnimatedTexture::new(tiles, 0.1).unwrap();
+//     texture.tick(10);
+//     assert_eq!(texture.current_frame(), 1);
 
-    texture.tick(0.1);
-    assert_eq!(texture.current_frame(), 1);
+//     texture.tick(10);
+//     assert_eq!(texture.current_frame(), 0);
+// }
 
-    texture.tick(0.1);
-    assert_eq!(texture.current_frame(), 0);
-}
+// #[test]
+// fn test_animated_texture_single_frame() {
+//     let tiles = smallvec![mock_atlas_tile(1)];
+//     let mut texture = AnimatedTexture::new(tiles, 10).unwrap();
 
-#[test]
-fn test_animated_texture_single_frame() {
-    let tiles = vec![mock_atlas_tile(1)];
-    let mut texture = AnimatedTexture::new(tiles, 0.1).unwrap();
-
-    texture.tick(0.1);
-    assert_eq!(texture.current_frame(), 0);
-    assert_eq!(texture.current_tile().color.unwrap().r, 1);
-}
+//     texture.tick(10);
+//     assert_eq!(texture.current_frame(), 0);
+//     assert_eq!(texture.current_tile().color.unwrap().r, 1);
+// }

tests/asset.rs

@@ -1,14 +0,0 @@
-use pacman::asset::Asset;
-use std::path::Path;
-use strum::IntoEnumIterator;
-
-#[test]
-fn test_asset_paths_valid() {
-    let base_path = Path::new("assets/game/");
-
-    for asset in Asset::iter() {
-        let path = base_path.join(asset.path());
-        assert!(path.exists(), "Asset path does not exist: {:?}", path);
-        assert!(path.is_file(), "Asset path is not a file: {:?}", path);
-    }
-}

tests/collision.rs

@@ -1,119 +1,149 @@
-use pacman::entity::collision::{Collidable, CollisionSystem};
-use pacman::entity::traversal::Position;
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
 
-struct MockCollidable {
-    pos: Position,
+use pacman::{
+    error::GameError,
+    events::GameEvent,
+    map::builder::Map,
+    systems::{
+        check_collision, collision_system, Collider, EntityType, Ghost, GhostCollider, ItemCollider, NodeId, PacmanCollider,
+        Position,
+    },
+};
+
+fn create_test_world() -> World {
+    let mut world = World::new();
+
+    // Add required resources
+    world.insert_resource(Events::<GameEvent>::default());
+    world.insert_resource(Events::<GameError>::default());
+
+    // Add a minimal test map
+    world.insert_resource(create_test_map());
+
+    world
 }
 
-impl Collidable for MockCollidable {
-    fn position(&self) -> Position {
-        self.pos
-    }
+fn create_test_map() -> Map {
+    use pacman::constants::RAW_BOARD;
+    Map::new(RAW_BOARD).expect("Failed to create test map")
+}
+
+fn spawn_test_pacman(world: &mut World) -> Entity {
+    world
+        .spawn((Position::Stopped { node: 0 }, Collider { size: 10.0 }, PacmanCollider))
+        .id()
+}
+
+fn spawn_test_item(world: &mut World) -> Entity {
+    world
+        .spawn((
+            Position::Stopped { node: 0 },
+            Collider { size: 8.0 },
+            ItemCollider,
+            EntityType::Pellet,
+        ))
+        .id()
+}
+
+fn spawn_test_ghost(world: &mut World) -> Entity {
+    world
+        .spawn((
+            Position::Stopped { node: 0 },
+            Collider { size: 12.0 },
+            GhostCollider,
+            Ghost::Blinky,
+            EntityType::Ghost,
+        ))
+        .id()
+}
+
+fn spawn_test_ghost_at_node(world: &mut World, node: usize) -> Entity {
+    world
+        .spawn((
+            Position::Stopped { node: node as NodeId },
+            Collider { size: 12.0 },
+            GhostCollider,
+            Ghost::Blinky,
+            EntityType::Ghost,
+        ))
+        .id()
 }
 
 #[test]
-fn test_is_colliding_with() {
-    let entity1 = MockCollidable {
-        pos: Position::AtNode(1),
-    };
-    let entity2 = MockCollidable {
-        pos: Position::AtNode(1),
-    };
-    let entity3 = MockCollidable {
-        pos: Position::AtNode(2),
-    };
-    let entity4 = MockCollidable {
-        pos: Position::BetweenNodes {
-            from: 1,
-            to: 2,
-            traversed: 0.5,
-        },
-    };
+fn test_collider_collision_detection() {
+    let collider1 = Collider { size: 10.0 };
+    let collider2 = Collider { size: 8.0 };
 
-    assert!(entity1.is_colliding_with(&entity2));
-    assert!(!entity1.is_colliding_with(&entity3));
-    assert!(entity1.is_colliding_with(&entity4));
-    assert!(entity3.is_colliding_with(&entity4));
+    // Test collision detection
+    assert!(collider1.collides_with(collider2.size, 5.0)); // Should collide (distance < 9.0)
+    assert!(!collider1.collides_with(collider2.size, 15.0)); // Should not collide (distance > 9.0)
 }
 
 #[test]
-fn test_collision_system_register_and_query() {
-    let mut collision_system = CollisionSystem::default();
+fn test_check_collision_helper() {
+    let map = create_test_map();
+    let pos1 = Position::Stopped { node: 0 };
+    let pos2 = Position::Stopped { node: 0 }; // Same position
+    let collider1 = Collider { size: 10.0 };
+    let collider2 = Collider { size: 8.0 };
 
-    let pos1 = Position::AtNode(1);
-    let entity1 = collision_system.register_entity(pos1);
+    // Test collision at same position
+    let result = check_collision(&pos1, &collider1, &pos2, &collider2, &map);
+    assert!(result.is_ok());
+    assert!(result.unwrap()); // Should collide at same position
 
-    let pos2 = Position::BetweenNodes {
-        from: 1,
-        to: 2,
-        traversed: 0.5,
-    };
-    let entity2 = collision_system.register_entity(pos2);
-
-    let pos3 = Position::AtNode(3);
-    let entity3 = collision_system.register_entity(pos3);
-
-    // Test entities_at_node
-    assert_eq!(collision_system.entities_at_node(1), &[entity1, entity2]);
-    assert_eq!(collision_system.entities_at_node(2), &[entity2]);
-    assert_eq!(collision_system.entities_at_node(3), &[entity3]);
-    assert_eq!(collision_system.entities_at_node(4), &[] as &[u32]);
-
-    // Test potential_collisions
-    let mut collisions1 = collision_system.potential_collisions(&pos1);
-    collisions1.sort_unstable();
-    assert_eq!(collisions1, vec![entity1, entity2]);
-
-    let mut collisions2 = collision_system.potential_collisions(&pos2);
-    collisions2.sort_unstable();
-    assert_eq!(collisions2, vec![entity1, entity2]);
-
-    let mut collisions3 = collision_system.potential_collisions(&pos3);
-    collisions3.sort_unstable();
-    assert_eq!(collisions3, vec![entity3]);
+    // Test collision at different positions
+    let pos3 = Position::Stopped { node: 1 }; // Different position
+    let result = check_collision(&pos1, &collider1, &pos3, &collider2, &map);
+    assert!(result.is_ok());
+    // May or may not collide depending on actual node positions
 }
 
 #[test]
-fn test_collision_system_update() {
-    let mut collision_system = CollisionSystem::default();
+fn test_collision_system_pacman_item() {
+    let mut world = create_test_world();
+    let _pacman = spawn_test_pacman(&mut world);
+    let _item = spawn_test_item(&mut world);
 
-    let entity1 = collision_system.register_entity(Position::AtNode(1));
-
-    assert_eq!(collision_system.entities_at_node(1), &[entity1]);
-    assert_eq!(collision_system.entities_at_node(2), &[] as &[u32]);
-
-    collision_system.update_position(entity1, Position::AtNode(2));
-
-    assert_eq!(collision_system.entities_at_node(1), &[] as &[u32]);
-    assert_eq!(collision_system.entities_at_node(2), &[entity1]);
-
-    collision_system.update_position(
-        entity1,
-        Position::BetweenNodes {
-            from: 2,
-            to: 3,
-            traversed: 0.1,
-        },
-    );
-
-    assert_eq!(collision_system.entities_at_node(1), &[] as &[u32]);
-    assert_eq!(collision_system.entities_at_node(2), &[entity1]);
-    assert_eq!(collision_system.entities_at_node(3), &[entity1]);
+    // Run collision system - should not panic
+    world
+        .run_system_once(collision_system)
+        .expect("System should run successfully");
 }
 
 #[test]
-fn test_collision_system_remove() {
-    let mut collision_system = CollisionSystem::default();
+fn test_collision_system_pacman_ghost() {
+    let mut world = create_test_world();
+    let _pacman = spawn_test_pacman(&mut world);
+    let _ghost = spawn_test_ghost(&mut world);
 
-    let entity1 = collision_system.register_entity(Position::AtNode(1));
-    let entity2 = collision_system.register_entity(Position::AtNode(1));
-
-    assert_eq!(collision_system.entities_at_node(1), &[entity1, entity2]);
-
-    collision_system.remove_entity(entity1);
-
-    assert_eq!(collision_system.entities_at_node(1), &[entity2]);
-
-    collision_system.remove_entity(entity2);
-    assert_eq!(collision_system.entities_at_node(1), &[] as &[u32]);
+    // Run collision system - should not panic
+    world
+        .run_system_once(collision_system)
+        .expect("System should run successfully");
+}
+
+#[test]
+fn test_collision_system_no_collision() {
+    let mut world = create_test_world();
+    let _pacman = spawn_test_pacman(&mut world);
+    let _ghost = spawn_test_ghost_at_node(&mut world, 1); // Different node
+
+    // Run collision system - should not panic
+    world
+        .run_system_once(collision_system)
+        .expect("System should run successfully");
+}
+
+#[test]
+fn test_collision_system_multiple_entities() {
+    let mut world = create_test_world();
+    let _pacman = spawn_test_pacman(&mut world);
+    let _item = spawn_test_item(&mut world);
+    let _ghost = spawn_test_ghost(&mut world);
+
+    // Run collision system - should not panic
+    world
+        .run_system_once(collision_system)
+        .expect("System should run successfully");
 }

tests/common/mod.rs

@@ -2,7 +2,7 @@
 
 use pacman::{
     asset::{get_asset_bytes, Asset},
-    game::state::ATLAS_FRAMES,
+    game::ATLAS_FRAMES,
     texture::sprite::{AtlasMapper, SpriteAtlas},
 };
 use sdl2::{
@@ -28,7 +28,7 @@ pub fn setup_sdl() -> Result<(Canvas<Window>, TextureCreator<WindowContext>, Sdl
 
 pub fn create_atlas(canvas: &mut sdl2::render::Canvas<sdl2::video::Window>) -> SpriteAtlas {
     let texture_creator = canvas.texture_creator();
-    let atlas_bytes = get_asset_bytes(Asset::Atlas).unwrap();
+    let atlas_bytes = get_asset_bytes(Asset::AtlasImage).unwrap();
 
     let texture = texture_creator.load_texture_bytes(&atlas_bytes).unwrap();
     let texture: Texture<'static> = unsafe { std::mem::transmute(texture) };

tests/constants.rs

@@ -2,27 +2,34 @@ use pacman::constants::*;
 
 #[test]
 fn test_raw_board_structure() {
+    // Test board dimensions match expected size
     assert_eq!(RAW_BOARD.len(), BOARD_CELL_SIZE.y as usize);
-
     for row in RAW_BOARD.iter() {
         assert_eq!(row.len(), BOARD_CELL_SIZE.x as usize);
     }
 
-    // Test boundaries
+    // Test boundaries are properly walled
     assert!(RAW_BOARD[0].chars().all(|c| c == '#'));
     assert!(RAW_BOARD[RAW_BOARD.len() - 1].chars().all(|c| c == '#'));
-
-    // Test tunnel row
-    let tunnel_row = RAW_BOARD[14];
-    assert_eq!(tunnel_row.chars().next().unwrap(), 'T');
-    assert_eq!(tunnel_row.chars().last().unwrap(), 'T');
 }
 
 #[test]
-fn test_raw_board_content() {
-    let power_pellet_count = RAW_BOARD.iter().flat_map(|row| row.chars()).filter(|&c| c == 'o').count();
-    assert_eq!(power_pellet_count, 4);
-
-    assert!(RAW_BOARD.iter().any(|row| row.contains('X')));
-    assert!(RAW_BOARD.iter().any(|row| row.contains("==")));
+fn test_raw_board_contains_required_elements() {
+    // Test that essential game elements are present
+    assert!(
+        RAW_BOARD.iter().any(|row| row.contains('X')),
+        "Board should contain Pac-Man start position"
+    );
+    assert!(
+        RAW_BOARD.iter().any(|row| row.contains("==")),
+        "Board should contain ghost house door"
+    );
+    assert!(
+        RAW_BOARD.iter().any(|row| row.chars().any(|c| c == 'T')),
+        "Board should contain tunnel entrances"
+    );
+    assert!(
+        RAW_BOARD.iter().any(|row| row.chars().any(|c| c == 'o')),
+        "Board should contain power pellets"
+    );
 }

tests/debug_rendering.rs

@@ -1,34 +0,0 @@
-use glam::Vec2;
-use pacman::entity::graph::{Graph, Node};
-use pacman::map::render::MapRenderer;
-
-#[test]
-fn test_find_nearest_node() {
-    let mut graph = Graph::new();
-
-    // Add some test nodes
-    let node1 = graph.add_node(Node {
-        position: Vec2::new(10.0, 10.0),
-    });
-    let node2 = graph.add_node(Node {
-        position: Vec2::new(50.0, 50.0),
-    });
-    let node3 = graph.add_node(Node {
-        position: Vec2::new(100.0, 100.0),
-    });
-
-    // Test cursor near node1
-    let cursor_pos = Vec2::new(12.0, 8.0);
-    let nearest = MapRenderer::find_nearest_node(&graph, cursor_pos);
-    assert_eq!(nearest, Some(node1));
-
-    // Test cursor near node2
-    let cursor_pos = Vec2::new(45.0, 55.0);
-    let nearest = MapRenderer::find_nearest_node(&graph, cursor_pos);
-    assert_eq!(nearest, Some(node2));
-
-    // Test cursor near node3
-    let cursor_pos = Vec2::new(98.0, 102.0);
-    let nearest = MapRenderer::find_nearest_node(&graph, cursor_pos);
-    assert_eq!(nearest, Some(node3));
-}

tests/direction.rs

@@ -1,5 +1,5 @@
-use glam::IVec2;
-use pacman::entity::direction::*;
+use glam::I8Vec2;
+use pacman::map::direction::*;
 
 #[test]
 fn test_direction_opposite() {
@@ -18,14 +18,14 @@ fn test_direction_opposite() {
 #[test]
 fn test_direction_as_ivec2() {
     let test_cases = [
-        (Direction::Up, -IVec2::Y),
-        (Direction::Down, IVec2::Y),
-        (Direction::Left, -IVec2::X),
-        (Direction::Right, IVec2::X),
+        (Direction::Up, -I8Vec2::Y),
+        (Direction::Down, I8Vec2::Y),
+        (Direction::Left, -I8Vec2::X),
+        (Direction::Right, I8Vec2::X),
     ];
 
     for (dir, expected) in test_cases {
         assert_eq!(dir.as_ivec2(), expected);
-        assert_eq!(IVec2::from(dir), expected);
+        assert_eq!(I8Vec2::from(dir), expected);
     }
 }

tests/directional.rs

@@ -1,77 +0,0 @@
-use glam::U16Vec2;
-use pacman::entity::direction::Direction;
-use pacman::texture::animated::AnimatedTexture;
-use pacman::texture::directional::DirectionalAnimatedTexture;
-use pacman::texture::sprite::AtlasTile;
-use sdl2::pixels::Color;
-
-fn mock_atlas_tile(id: u32) -> AtlasTile {
-    AtlasTile {
-        pos: U16Vec2::new(0, 0),
-        size: U16Vec2::new(16, 16),
-        color: Some(Color::RGB(id as u8, 0, 0)),
-    }
-}
-
-fn mock_animated_texture(id: u32) -> AnimatedTexture {
-    AnimatedTexture::new(vec![mock_atlas_tile(id)], 0.1).expect("Invalid frame duration")
-}
-
-#[test]
-fn test_directional_texture_partial_directions() {
-    let mut textures = [None, None, None, None];
-    textures[Direction::Up.as_usize()] = Some(mock_animated_texture(1));
-
-    let texture = DirectionalAnimatedTexture::new(textures, [None, None, None, None]);
-
-    assert_eq!(texture.texture_count(), 1);
-    assert!(texture.has_direction(Direction::Up));
-    assert!(!texture.has_direction(Direction::Down));
-    assert!(!texture.has_direction(Direction::Left));
-    assert!(!texture.has_direction(Direction::Right));
-}
-
-#[test]
-fn test_directional_texture_all_directions() {
-    let mut textures = [None, None, None, None];
-    let directions = [
-        (Direction::Up, 1),
-        (Direction::Down, 2),
-        (Direction::Left, 3),
-        (Direction::Right, 4),
-    ];
-
-    for (direction, id) in directions {
-        textures[direction.as_usize()] = Some(mock_animated_texture(id));
-    }
-
-    let texture = DirectionalAnimatedTexture::new(textures, [None, None, None, None]);
-
-    assert_eq!(texture.texture_count(), 4);
-    for direction in &[Direction::Up, Direction::Down, Direction::Left, Direction::Right] {
-        assert!(texture.has_direction(*direction));
-    }
-}
-
-#[test]
-fn test_directional_texture_stopped() {
-    let mut stopped_textures = [None, None, None, None];
-    stopped_textures[Direction::Up.as_usize()] = Some(mock_animated_texture(1));
-
-    let texture = DirectionalAnimatedTexture::new([None, None, None, None], stopped_textures);
-
-    assert_eq!(texture.stopped_texture_count(), 1);
-    assert!(texture.has_stopped_direction(Direction::Up));
-    assert!(!texture.has_stopped_direction(Direction::Down));
-}
-
-#[test]
-fn test_directional_texture_tick() {
-    let mut textures = [None, None, None, None];
-    textures[Direction::Up.as_usize()] = Some(mock_animated_texture(1));
-    let mut texture = DirectionalAnimatedTexture::new(textures, [None, None, None, None]);
-
-    // This is a bit of a placeholder, since we can't inspect the inner state easily.
-    // We're just ensuring the tick method runs without panicking.
-    texture.tick(0.1);
-}

tests/error.rs

@@ -0,0 +1,134 @@
+use pacman::error::{
+    AssetError, EntityError, GameError, GameResult, IntoGameError, MapError, OptionExt, ParseError, ResultExt, TextureError,
+};
+use std::io;
+
+#[test]
+fn test_game_error_from_asset_error() {
+    let asset_error = AssetError::NotFound("test.png".to_string());
+    let game_error: GameError = asset_error.into();
+    assert!(matches!(game_error, GameError::Asset(_)));
+}
+
+#[test]
+fn test_game_error_from_parse_error() {
+    let parse_error = ParseError::UnknownCharacter('Z');
+    let game_error: GameError = parse_error.into();
+    assert!(matches!(game_error, GameError::MapParse(_)));
+}
+
+#[test]
+fn test_game_error_from_map_error() {
+    let map_error = MapError::NodeNotFound(42);
+    let game_error: GameError = map_error.into();
+    assert!(matches!(game_error, GameError::Map(_)));
+}
+
+#[test]
+fn test_game_error_from_texture_error() {
+    let texture_error = TextureError::LoadFailed("Failed to load".to_string());
+    let game_error: GameError = texture_error.into();
+    assert!(matches!(game_error, GameError::Texture(_)));
+}
+
+#[test]
+fn test_game_error_from_entity_error() {
+    let entity_error = EntityError::NodeNotFound(10);
+    let game_error: GameError = entity_error.into();
+    assert!(matches!(game_error, GameError::Entity(_)));
+}
+
+#[test]
+fn test_game_error_from_io_error() {
+    let io_error = io::Error::new(io::ErrorKind::NotFound, "File not found");
+    let game_error: GameError = io_error.into();
+    assert!(matches!(game_error, GameError::Io(_)));
+}
+
+#[test]
+fn test_asset_error_from_io_error() {
+    let io_error = io::Error::new(io::ErrorKind::PermissionDenied, "Permission denied");
+    let asset_error: AssetError = io_error.into();
+    assert!(matches!(asset_error, AssetError::Io(_)));
+}
+
+#[test]
+fn test_parse_error_display() {
+    let error = ParseError::UnknownCharacter('!');
+    assert_eq!(error.to_string(), "Unknown character in board: !");
+
+    let error = ParseError::InvalidHouseDoorCount(3);
+    assert_eq!(error.to_string(), "House door must have exactly 2 positions, found 3");
+}
+
+#[test]
+fn test_entity_error_display() {
+    let error = EntityError::NodeNotFound(42);
+    assert_eq!(error.to_string(), "Node not found in graph: 42");
+
+    let error = EntityError::EdgeNotFound { from: 1, to: 2 };
+    assert_eq!(error.to_string(), "Edge not found: from 1 to 2");
+}
+
+#[test]
+fn test_into_game_error_trait() {
+    let result: Result<i32, io::Error> = Err(io::Error::new(io::ErrorKind::Other, "test error"));
+    let game_result: GameResult<i32> = result.into_game_error();
+
+    assert!(game_result.is_err());
+    if let Err(GameError::InvalidState(msg)) = game_result {
+        assert!(msg.contains("test error"));
+    } else {
+        panic!("Expected InvalidState error");
+    }
+}
+
+#[test]
+fn test_into_game_error_trait_success() {
+    let result: Result<i32, io::Error> = Ok(42);
+    let game_result: GameResult<i32> = result.into_game_error();
+
+    assert_eq!(game_result.unwrap(), 42);
+}
+
+#[test]
+fn test_option_ext_some() {
+    let option: Option<i32> = Some(42);
+    let result: GameResult<i32> = option.ok_or_game_error(|| GameError::InvalidState("Not found".to_string()));
+
+    assert_eq!(result.unwrap(), 42);
+}
+
+#[test]
+fn test_option_ext_none() {
+    let option: Option<i32> = None;
+    let result: GameResult<i32> = option.ok_or_game_error(|| GameError::InvalidState("Not found".to_string()));
+
+    assert!(result.is_err());
+    if let Err(GameError::InvalidState(msg)) = result {
+        assert_eq!(msg, "Not found");
+    } else {
+        panic!("Expected InvalidState error");
+    }
+}
+
+#[test]
+fn test_result_ext_success() {
+    let result: Result<i32, io::Error> = Ok(42);
+    let game_result: GameResult<i32> = result.with_context(|_| GameError::InvalidState("Context".to_string()));
+
+    assert_eq!(game_result.unwrap(), 42);
+}
+
+#[test]
+fn test_result_ext_error() {
+    let result: Result<i32, io::Error> = Err(io::Error::new(io::ErrorKind::Other, "original error"));
+    let game_result: GameResult<i32> = result.with_context(|_| GameError::InvalidState("Context error".to_string()));
+
+    assert!(game_result.is_err());
+    if let Err(GameError::InvalidState(msg)) = game_result {
+        assert_eq!(msg, "Context error");
+    } else {
+        panic!("Expected InvalidState error");
+    }
+}

tests/events.rs

@@ -0,0 +1,19 @@
+use pacman::events::{GameCommand, GameEvent};
+use pacman::map::direction::Direction;
+
+#[test]
+fn test_game_command_to_game_event_conversion_all_variants() {
+    let commands = vec![
+        GameCommand::Exit,
+        GameCommand::MovePlayer(Direction::Up),
+        GameCommand::ToggleDebug,
+        GameCommand::MuteAudio,
+        GameCommand::ResetLevel,
+        GameCommand::TogglePause,
+    ];
+
+    for command in commands {
+        let event: GameEvent = command.into();
+        assert_eq!(event, GameEvent::Command(command));
+    }
+}

tests/formatting.rs

@@ -0,0 +1,165 @@
+use pacman::systems::profiling::format_timing_display;
+use std::time::Duration;
+
+use pretty_assertions::assert_eq;
+
+fn get_timing_data() -> Vec<(String, Duration, Duration)> {
+    vec![
+        ("total".to_string(), Duration::from_micros(1234), Duration::from_micros(570)),
+        ("input".to_string(), Duration::from_micros(120), Duration::from_micros(45)),
+        ("player".to_string(), Duration::from_micros(456), Duration::from_micros(123)),
+        ("movement".to_string(), Duration::from_micros(789), Duration::from_micros(234)),
+        ("render".to_string(), Duration::from_micros(12), Duration::from_micros(3)),
+        ("debug".to_string(), Duration::from_nanos(460), Duration::from_nanos(557)),
+    ]
+}
+
+fn get_formatted_output() -> impl IntoIterator<Item = String> {
+    format_timing_display(get_timing_data())
+}
+
+#[test]
+fn test_complex_formatting_alignment() {
+    let mut colon_positions = vec![];
+    let mut first_decimal_positions = vec![];
+    let mut second_decimal_positions = vec![];
+    let mut first_unit_positions = vec![];
+    let mut second_unit_positions = vec![];
+
+    get_formatted_output().into_iter().for_each(|line| {
+        let (mut got_decimal, mut got_unit) = (false, false);
+        for (i, char) in line.chars().enumerate() {
+            match char {
+                ':' => colon_positions.push(i),
+                '.' => {
+                    if got_decimal {
+                        second_decimal_positions.push(i);
+                    } else {
+                        first_decimal_positions.push(i);
+                    }
+                    got_decimal = true;
+                }
+                's' => {
+                    if got_unit {
+                        first_unit_positions.push(i);
+                    } else {
+                        second_unit_positions.push(i);
+                        got_unit = true;
+                    }
+                }
+                _ => {}
+            }
+        }
+    });
+
+    // Assert that all positions were found
+    assert_eq!(
+        [
+            &colon_positions,
+            &first_decimal_positions,
+            &second_decimal_positions,
+            &first_unit_positions,
+            &second_unit_positions
+        ]
+        .iter()
+        .all(|p| p.len() == 6),
+        true
+    );
+
+    // Assert that all positions are the same
+    assert!(
+        colon_positions.iter().all(|&p| p == colon_positions[0]),
+        "colon positions are not the same {:?}",
+        colon_positions
+    );
+    assert!(
+        first_decimal_positions.iter().all(|&p| p == first_decimal_positions[0]),
+        "first decimal positions are not the same {:?}",
+        first_decimal_positions
+    );
+    assert!(
+        second_decimal_positions.iter().all(|&p| p == second_decimal_positions[0]),
+        "second decimal positions are not the same {:?}",
+        second_decimal_positions
+    );
+    assert!(
+        first_unit_positions.iter().all(|&p| p == first_unit_positions[0]),
+        "first unit positions are not the same {:?}",
+        first_unit_positions
+    );
+    assert!(
+        second_unit_positions.iter().all(|&p| p == second_unit_positions[0]),
+        "second unit positions are not the same {:?}",
+        second_unit_positions
+    );
+}
+
+#[test]
+fn test_format_timing_display_basic() {
+    let timing_data = vec![
+        ("render".to_string(), Duration::from_micros(1500), Duration::from_micros(200)),
+        ("input".to_string(), Duration::from_micros(300), Duration::from_micros(50)),
+        ("physics".to_string(), Duration::from_nanos(750), Duration::from_nanos(100)),
+    ];
+
+    let formatted = format_timing_display(timing_data);
+
+    // Should have 3 lines (one for each system)
+    assert_eq!(formatted.len(), 3);
+
+    // Each line should contain the system name
+    assert!(formatted.iter().any(|line| line.contains("render")));
+    assert!(formatted.iter().any(|line| line.contains("input")));
+    assert!(formatted.iter().any(|line| line.contains("physics")));
+
+    // Each line should contain timing information with proper units
+    for line in formatted.iter() {
+        assert!(line.contains(":"), "Line should contain colon separator: {}", line);
+        assert!(line.contains("±"), "Line should contain ± symbol: {}", line);
+    }
+}
+
+#[test]
+fn test_format_timing_display_units() {
+    let timing_data = vec![
+        ("seconds".to_string(), Duration::from_secs(2), Duration::from_millis(100)),
+        ("millis".to_string(), Duration::from_millis(15), Duration::from_micros(200)),
+        ("micros".to_string(), Duration::from_micros(500), Duration::from_nanos(50)),
+        ("nanos".to_string(), Duration::from_nanos(250), Duration::from_nanos(25)),
+    ];
+
+    let formatted = format_timing_display(timing_data);
+
+    // Check that appropriate units are used
+    let all_lines = formatted.join(" ");
+    assert!(all_lines.contains("s"), "Should contain seconds unit");
+    assert!(all_lines.contains("ms"), "Should contain milliseconds unit");
+    assert!(all_lines.contains("µs"), "Should contain microseconds unit");
+    assert!(all_lines.contains("ns"), "Should contain nanoseconds unit");
+}
+
+#[test]
+fn test_format_timing_display_alignment() {
+    let timing_data = vec![
+        ("short".to_string(), Duration::from_micros(100), Duration::from_micros(10)),
+        (
+            "very_long_name".to_string(),
+            Duration::from_micros(200),
+            Duration::from_micros(20),
+        ),
+    ];
+
+    let formatted = format_timing_display(timing_data);
+
+    // Find colon positions - they should be aligned
+    let colon_positions: Vec<usize> = formatted.iter().map(|line| line.find(':').unwrap_or(0)).collect();
+
+    // All colons should be at the same position (aligned)
+    if colon_positions.len() > 1 {
+        let first_pos = colon_positions[0];
+        assert!(
+            colon_positions.iter().all(|&pos| pos == first_pos),
+            "Colons should be aligned at the same position"
+        );
+    }
+}

tests/game.rs

@@ -1,13 +0,0 @@
-use pacman::constants::RAW_BOARD;
-use pacman::map::builder::Map;
-
-mod collision;
-mod item;
-
-#[test]
-fn test_game_map_creation() {
-    let map = Map::new(RAW_BOARD).unwrap();
-
-    assert!(map.graph.node_count() > 0);
-    assert!(!map.grid_to_node.is_empty());
-}

tests/ghost.rs

@@ -1,48 +0,0 @@
-use pacman::entity::ghost::{Ghost, GhostType};
-use pacman::entity::graph::Graph;
-use pacman::texture::sprite::{AtlasMapper, MapperFrame, SpriteAtlas};
-use std::collections::HashMap;
-
-fn create_test_atlas() -> SpriteAtlas {
-    let mut frames = HashMap::new();
-    let directions = ["up", "down", "left", "right"];
-    let ghost_types = ["blinky", "pinky", "inky", "clyde"];
-
-    for ghost_type in &ghost_types {
-        for (i, dir) in directions.iter().enumerate() {
-            frames.insert(
-                format!("ghost/{}/{}_{}.png", ghost_type, dir, "a"),
-                MapperFrame {
-                    x: i as u16 * 16,
-                    y: 0,
-                    width: 16,
-                    height: 16,
-                },
-            );
-            frames.insert(
-                format!("ghost/{}/{}_{}.png", ghost_type, dir, "b"),
-                MapperFrame {
-                    x: i as u16 * 16,
-                    y: 16,
-                    width: 16,
-                    height: 16,
-                },
-            );
-        }
-    }
-
-    let mapper = AtlasMapper { frames };
-    let dummy_texture = unsafe { std::mem::zeroed() };
-    SpriteAtlas::new(dummy_texture, mapper)
-}
-
-#[test]
-fn test_ghost_creation() {
-    let graph = Graph::new();
-    let atlas = create_test_atlas();
-
-    let ghost = Ghost::new(&graph, 0, GhostType::Blinky, &atlas).unwrap();
-
-    assert_eq!(ghost.ghost_type, GhostType::Blinky);
-    assert_eq!(ghost.traverser.position.from_node_id(), 0);
-}

tests/graph.rs

@@ -1,6 +1,5 @@
-use pacman::entity::direction::Direction;
-use pacman::entity::graph::{EdgePermissions, Graph, Node};
-use pacman::entity::traversal::{Position, Traverser};
+use pacman::map::direction::Direction;
+use pacman::map::graph::{Graph, Node, TraversalFlags};
 
 fn create_test_graph() -> Graph {
     let mut graph = Graph::new();
@@ -30,7 +29,7 @@ fn test_graph_basic_operations() {
         position: glam::Vec2::new(16.0, 0.0),
     });
 
-    assert_eq!(graph.node_count(), 2);
+    assert_eq!(graph.nodes().count(), 2);
     assert!(graph.get_node(node1).is_some());
     assert!(graph.get_node(node2).is_some());
     assert!(graph.get_node(999).is_none());
@@ -79,11 +78,11 @@ fn test_graph_edge_permissions() {
     });
 
     graph
-        .add_edge(node1, node2, false, None, Direction::Right, EdgePermissions::GhostsOnly)
+        .add_edge(node1, node2, false, None, Direction::Right, TraversalFlags::GHOST)
         .unwrap();
 
     let edge = graph.find_edge_in_direction(node1, Direction::Right).unwrap();
-    assert_eq!(edge.permissions, EdgePermissions::GhostsOnly);
+    assert_eq!(edge.traversal_flags, TraversalFlags::GHOST);
 }
 
 #[test]
@@ -103,7 +102,7 @@ fn should_add_connected_node() {
         )
         .unwrap();
 
-    assert_eq!(graph.node_count(), 2);
+    assert_eq!(graph.nodes().count(), 2);
     let edge = graph.find_edge(node1, node2);
     assert!(edge.is_some());
     assert_eq!(edge.unwrap().direction, Direction::Right);
@@ -119,21 +118,21 @@ fn should_error_on_negative_edge_distance() {
         position: glam::Vec2::new(16.0, 0.0),
     });
 
-    let result = graph.add_edge(node1, node2, false, Some(-1.0), Direction::Right, EdgePermissions::All);
+    let result = graph.add_edge(node1, node2, false, Some(-1.0), Direction::Right, TraversalFlags::ALL);
     assert!(result.is_err());
 }
 
 #[test]
 fn should_error_on_duplicate_edge_without_replace() {
     let mut graph = create_test_graph();
-    let result = graph.add_edge(0, 1, false, None, Direction::Right, EdgePermissions::All);
+    let result = graph.add_edge(0, 1, false, None, Direction::Right, TraversalFlags::ALL);
     assert!(result.is_err());
 }
 
 #[test]
 fn should_allow_replacing_an_edge() {
     let mut graph = create_test_graph();
-    let result = graph.add_edge(0, 1, true, Some(42.0), Direction::Right, EdgePermissions::All);
+    let result = graph.add_edge(0, 1, true, Some(42.0), Direction::Right, TraversalFlags::ALL);
     assert!(result.is_ok());
 
     let edge = graph.find_edge(0, 1).unwrap();
@@ -150,68 +149,3 @@ fn should_find_edge_between_nodes() {
     let non_existent_edge = graph.find_edge(0, 99);
     assert!(non_existent_edge.is_none());
 }
-
-#[test]
-fn test_traverser_basic() {
-    let graph = create_test_graph();
-    let mut traverser = Traverser::new(&graph, 0, Direction::Left, &|_| true);
-
-    traverser.set_next_direction(Direction::Up);
-    assert!(traverser.next_direction.is_some());
-    assert_eq!(traverser.next_direction.unwrap().0, Direction::Up);
-}
-
-#[test]
-fn test_traverser_advance() {
-    let graph = create_test_graph();
-    let mut traverser = Traverser::new(&graph, 0, Direction::Right, &|_| true);
-
-    traverser.advance(&graph, 5.0, &|_| true).unwrap();
-
-    match traverser.position {
-        Position::BetweenNodes { from, to, traversed } => {
-            assert_eq!(from, 0);
-            assert_eq!(to, 1);
-            assert_eq!(traversed, 5.0);
-        }
-        _ => panic!("Expected to be between nodes"),
-    }
-
-    traverser.advance(&graph, 3.0, &|_| true).unwrap();
-
-    match traverser.position {
-        Position::BetweenNodes { from, to, traversed } => {
-            assert_eq!(from, 0);
-            assert_eq!(to, 1);
-            assert_eq!(traversed, 8.0);
-        }
-        _ => panic!("Expected to be between nodes"),
-    }
-}
-
-#[test]
-fn test_traverser_with_permissions() {
-    let mut graph = Graph::new();
-    let node1 = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 0.0),
-    });
-    let node2 = graph.add_node(Node {
-        position: glam::Vec2::new(16.0, 0.0),
-    });
-
-    graph
-        .add_edge(node1, node2, false, None, Direction::Right, EdgePermissions::GhostsOnly)
-        .unwrap();
-
-    // Pacman can't traverse ghost-only edges
-    let mut traverser = Traverser::new(&graph, node1, Direction::Right, &|edge| {
-        matches!(edge.permissions, EdgePermissions::All)
-    });
-
-    traverser
-        .advance(&graph, 5.0, &|edge| matches!(edge.permissions, EdgePermissions::All))
-        .unwrap();
-
-    // Should still be at the node since it can't traverse
-    assert!(traverser.position.is_at_node());
-}

tests/helpers.rs

@@ -1,19 +0,0 @@
-use glam::{IVec2, UVec2};
-use pacman::helpers::centered_with_size;
-
-#[test]
-fn test_centered_with_size() {
-    let test_cases = [
-        ((100, 100), (50, 30), (75, 85)),
-        ((50, 50), (51, 31), (25, 35)),
-        ((0, 0), (100, 100), (-50, -50)),
-        ((-100, -50), (80, 40), (-140, -70)),
-        ((1000, 1000), (1000, 1000), (500, 500)),
-    ];
-
-    for ((pos_x, pos_y), (size_x, size_y), (expected_x, expected_y)) in test_cases {
-        let rect = centered_with_size(IVec2::new(pos_x, pos_y), UVec2::new(size_x, size_y));
-        assert_eq!(rect.origin(), (expected_x, expected_y));
-        assert_eq!(rect.size(), (size_x, size_y));
-    }
-}

tests/hud.rs

@@ -0,0 +1,26 @@
+use bevy_ecs::{event::Events, world::World};
+
+use pacman::{error::GameError, systems::components::ScoreResource};
+
+fn create_test_world() -> World {
+    let mut world = World::new();
+
+    // Add required resources
+    world.insert_resource(Events::<GameError>::default());
+    world.insert_resource(ScoreResource(1230)); // Test score
+
+    world
+}
+
+#[test]
+fn test_hud_render_system_runs_without_error() {
+    let world = create_test_world();
+
+    // The HUD render system requires SDL2 resources that aren't available in tests,
+    // but we can at least verify it doesn't panic when called
+    // In a real test environment, we'd need to mock the SDL2 canvas and atlas
+
+    // For now, just verify the score resource is accessible
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 1230);
+}

tests/input.rs

@@ -0,0 +1,38 @@
+use pacman::events::{GameCommand, GameEvent};
+use pacman::map::direction::Direction;
+use pacman::systems::input::{process_simple_key_events, Bindings, SimpleKeyEvent};
+use sdl2::keyboard::Keycode;
+
+#[test]
+fn resumes_previous_direction_when_secondary_key_released() {
+    let mut bindings = Bindings::default();
+
+    // Frame 1: Press W (Up) => emits Move Up
+    let events = process_simple_key_events(&mut bindings, &[SimpleKeyEvent::KeyDown(Keycode::W)]);
+    assert!(events.contains(&GameEvent::Command(GameCommand::MovePlayer(Direction::Up))));
+
+    // Frame 2: Press D (Right) => emits Move Right
+    let events = process_simple_key_events(&mut bindings, &[SimpleKeyEvent::KeyDown(Keycode::D)]);
+    assert!(events.contains(&GameEvent::Command(GameCommand::MovePlayer(Direction::Right))));
+
+    // Frame 3: Release D, no new key this frame => should continue previous key W (Up)
+    let events = process_simple_key_events(&mut bindings, &[SimpleKeyEvent::KeyUp(Keycode::D)]);
+    assert!(events.contains(&GameEvent::Command(GameCommand::MovePlayer(Direction::Up))));
+}
+
+#[test]
+fn holds_last_pressed_key_across_frames_when_no_new_input() {
+    let mut bindings = Bindings::default();
+
+    // Frame 1: Press Left
+    let events = process_simple_key_events(&mut bindings, &[SimpleKeyEvent::KeyDown(Keycode::Left)]);
+    assert!(events.contains(&GameEvent::Command(GameCommand::MovePlayer(Direction::Left))));
+
+    // Frame 2: No input => continues Left
+    let events = process_simple_key_events(&mut bindings, &[]);
+    assert!(events.contains(&GameEvent::Command(GameCommand::MovePlayer(Direction::Left))));
+
+    // Frame 3: Release Left, no input remains => nothing emitted
+    let events = process_simple_key_events(&mut bindings, &[SimpleKeyEvent::KeyUp(Keycode::Left)]);
+    assert!(events.is_empty());
+}

tests/item.rs

@@ -1,53 +1,302 @@
-use glam::U16Vec2;
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
+
 use pacman::{
-    entity::{
-        collision::Collidable,
-        item::{FruitKind, Item, ItemType},
+    events::GameEvent,
+    map::builder::Map,
+    systems::{
+        is_valid_item_collision, item_system, AudioEvent, AudioState, EntityType, Ghost, GhostCollider, GhostState, ItemCollider,
+        PacmanCollider, Position, ScoreResource,
     },
-    texture::sprite::{AtlasTile, Sprite},
 };
-use strum::{EnumCount, IntoEnumIterator};
 
 #[test]
-fn test_item_type_get_score() {
-    assert_eq!(ItemType::Pellet.get_score(), 10);
-    assert_eq!(ItemType::Energizer.get_score(), 50);
-
-    let fruit = ItemType::Fruit { kind: FruitKind::Apple };
-    assert_eq!(fruit.get_score(), 100);
+fn test_calculate_score_for_item() {
+    assert!(EntityType::Pellet.score_value() < EntityType::PowerPellet.score_value());
+    assert!(EntityType::Pellet.score_value().is_some());
+    assert!(EntityType::PowerPellet.score_value().is_some());
+    assert!(EntityType::Player.score_value().is_none());
+    assert!(EntityType::Ghost.score_value().is_none());
 }
 
 #[test]
-fn test_fruit_kind_increasing_score() {
-    // Build a list of fruit kinds, sorted by their index
-    let mut kinds = FruitKind::iter()
-        .map(|kind| (kind.index(), kind.get_score()))
-        .collect::<Vec<_>>();
-    kinds.sort_unstable_by_key(|(index, _)| *index);
+fn test_is_collectible_item() {
+    // Collectible
+    assert!(EntityType::Pellet.is_collectible());
+    assert!(EntityType::PowerPellet.is_collectible());
 
-    assert_eq!(kinds.len(), FruitKind::COUNT);
-
-    // Check that the score increases as expected
-    for window in kinds.windows(2) {
-        let ((_, prev), (_, next)) = (window[0], window[1]);
-        assert!(prev < next, "Fruits should have increasing scores, but {prev:?} < {next:?}");
-    }
+    // Non-collectible
+    assert!(!EntityType::Player.is_collectible());
+    assert!(!EntityType::Ghost.is_collectible());
 }
 
 #[test]
-fn test_item_creation_and_collection() {
-    let atlas_tile = AtlasTile {
-        pos: U16Vec2::new(0, 0),
-        size: U16Vec2::new(16, 16),
-        color: None,
-    };
-    let sprite = Sprite::new(atlas_tile);
-    let mut item = Item::new(0, ItemType::Pellet, sprite);
+fn test_is_valid_item_collision() {
+    // Player-item collisions should be valid
+    assert!(is_valid_item_collision(EntityType::Player, EntityType::Pellet));
+    assert!(is_valid_item_collision(EntityType::Player, EntityType::PowerPellet));
+    assert!(is_valid_item_collision(EntityType::Pellet, EntityType::Player));
+    assert!(is_valid_item_collision(EntityType::PowerPellet, EntityType::Player));
 
-    assert!(!item.is_collected());
-    assert_eq!(item.get_score(), 10);
-    assert_eq!(item.position().from_node_id(), 0);
-
-    item.collect();
-    assert!(item.is_collected());
+    // Non-player-item collisions should be invalid
+    assert!(!is_valid_item_collision(EntityType::Player, EntityType::Ghost));
+    assert!(!is_valid_item_collision(EntityType::Ghost, EntityType::Pellet));
+    assert!(!is_valid_item_collision(EntityType::Pellet, EntityType::PowerPellet));
+    assert!(!is_valid_item_collision(EntityType::Player, EntityType::Player));
+}
+
+fn create_test_world() -> World {
+    let mut world = World::new();
+
+    // Add required resources
+    world.insert_resource(ScoreResource(0));
+    world.insert_resource(AudioState::default());
+    world.insert_resource(Events::<GameEvent>::default());
+    world.insert_resource(Events::<AudioEvent>::default());
+    world.insert_resource(Events::<pacman::error::GameError>::default());
+
+    // Add a minimal test map
+    world.insert_resource(create_test_map());
+
+    world
+}
+
+fn create_test_map() -> Map {
+    use pacman::constants::RAW_BOARD;
+    Map::new(RAW_BOARD).expect("Failed to create test map")
+}
+
+fn spawn_test_pacman(world: &mut World) -> Entity {
+    world
+        .spawn((Position::Stopped { node: 0 }, EntityType::Player, PacmanCollider))
+        .id()
+}
+
+fn spawn_test_item(world: &mut World, item_type: EntityType) -> Entity {
+    world.spawn((Position::Stopped { node: 1 }, item_type, ItemCollider)).id()
+}
+
+fn spawn_test_ghost(world: &mut World, ghost_state: GhostState) -> Entity {
+    world
+        .spawn((
+            Position::Stopped { node: 2 },
+            Ghost::Blinky,
+            EntityType::Ghost,
+            GhostCollider,
+            ghost_state,
+        ))
+        .id()
+}
+
+fn send_collision_event(world: &mut World, entity1: Entity, entity2: Entity) {
+    let mut events = world.resource_mut::<Events<GameEvent>>();
+    events.send(GameEvent::Collision(entity1, entity2));
+}
+
+#[test]
+fn test_item_system_pellet_collection() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+    let pellet = spawn_test_item(&mut world, EntityType::Pellet);
+
+    // Send collision event
+    send_collision_event(&mut world, pacman, pellet);
+
+    // Run the item system
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Check that score was updated
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 10);
+
+    // Check that the pellet was despawned (query should return empty)
+    let item_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::Pellet))
+        .count();
+    assert_eq!(item_count, 0);
+}
+
+#[test]
+fn test_item_system_power_pellet_collection() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+    let power_pellet = spawn_test_item(&mut world, EntityType::PowerPellet);
+
+    send_collision_event(&mut world, pacman, power_pellet);
+
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Check that score was updated with power pellet value
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 50);
+
+    // Check that the power pellet was despawned (query should return empty)
+    let item_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::PowerPellet))
+        .count();
+    assert_eq!(item_count, 0);
+}
+
+#[test]
+fn test_item_system_multiple_collections() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+    let pellet1 = spawn_test_item(&mut world, EntityType::Pellet);
+    let pellet2 = spawn_test_item(&mut world, EntityType::Pellet);
+    let power_pellet = spawn_test_item(&mut world, EntityType::PowerPellet);
+
+    // Send multiple collision events
+    send_collision_event(&mut world, pacman, pellet1);
+    send_collision_event(&mut world, pacman, pellet2);
+    send_collision_event(&mut world, pacman, power_pellet);
+
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Check final score: 2 pellets (20) + 1 power pellet (50) = 70
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 70);
+
+    // Check that all items were despawned
+    let pellet_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::Pellet))
+        .count();
+    let power_pellet_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::PowerPellet))
+        .count();
+    assert_eq!(pellet_count, 0);
+    assert_eq!(power_pellet_count, 0);
+}
+
+#[test]
+fn test_item_system_ignores_non_item_collisions() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+
+    // Create a ghost entity (not an item)
+    let ghost = world.spawn((Position::Stopped { node: 2 }, EntityType::Ghost)).id();
+
+    // Initial score
+    let initial_score = world.resource::<ScoreResource>().0;
+
+    // Send collision event between pacman and ghost
+    send_collision_event(&mut world, pacman, ghost);
+
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Score should remain unchanged
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, initial_score);
+
+    // Ghost should still exist (not despawned)
+    let ghost_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::Ghost))
+        .count();
+    assert_eq!(ghost_count, 1);
+}
+
+#[test]
+fn test_item_system_no_collision_events() {
+    let mut world = create_test_world();
+    let _pacman = spawn_test_pacman(&mut world);
+    let _pellet = spawn_test_item(&mut world, EntityType::Pellet);
+
+    let initial_score = world.resource::<ScoreResource>().0;
+
+    // Run system without any collision events
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Nothing should change
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, initial_score);
+    let pellet_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::Pellet))
+        .count();
+    assert_eq!(pellet_count, 1);
+}
+
+#[test]
+fn test_item_system_collision_with_missing_entity() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+
+    // Create a fake entity ID that doesn't exist
+    let fake_entity = Entity::from_raw(999);
+
+    send_collision_event(&mut world, pacman, fake_entity);
+
+    // System should handle gracefully and not crash
+    world
+        .run_system_once(item_system)
+        .expect("System should handle missing entities gracefully");
+
+    // Score should remain unchanged
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 0);
+}
+
+#[test]
+fn test_item_system_preserves_existing_score() {
+    let mut world = create_test_world();
+
+    // Set initial score
+    world.insert_resource(ScoreResource(100));
+
+    let pacman = spawn_test_pacman(&mut world);
+    let pellet = spawn_test_item(&mut world, EntityType::Pellet);
+
+    send_collision_event(&mut world, pacman, pellet);
+
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Score should be initial + pellet value
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 110);
+}
+
+#[test]
+fn test_power_pellet_does_not_affect_ghosts_in_eyes_state() {
+    let mut world = create_test_world();
+    let pacman = spawn_test_pacman(&mut world);
+    let power_pellet = spawn_test_item(&mut world, EntityType::PowerPellet);
+
+    // Spawn a ghost in Eyes state (returning to ghost house)
+    let eyes_ghost = spawn_test_ghost(&mut world, GhostState::Eyes);
+
+    // Spawn a ghost in Normal state
+    let normal_ghost = spawn_test_ghost(&mut world, GhostState::Normal);
+
+    send_collision_event(&mut world, pacman, power_pellet);
+
+    world.run_system_once(item_system).expect("System should run successfully");
+
+    // Check that the power pellet was collected and score updated
+    let score = world.resource::<ScoreResource>();
+    assert_eq!(score.0, 50);
+
+    // Check that the power pellet was despawned
+    let power_pellet_count = world
+        .query::<&EntityType>()
+        .iter(&world)
+        .filter(|&entity_type| matches!(entity_type, EntityType::PowerPellet))
+        .count();
+    assert_eq!(power_pellet_count, 0);
+
+    // Check that the Eyes ghost state was not changed
+    let eyes_ghost_state = world.entity(eyes_ghost).get::<GhostState>().unwrap();
+    assert!(matches!(*eyes_ghost_state, GhostState::Eyes));
+
+    // Check that the Normal ghost state was changed to Frightened
+    let normal_ghost_state = world.entity(normal_ghost).get::<GhostState>().unwrap();
+    assert!(matches!(*normal_ghost_state, GhostState::Frightened { .. }));
 }

tests/map_builder.rs

@@ -1,13 +1,12 @@
 use glam::Vec2;
 use pacman::constants::{CELL_SIZE, RAW_BOARD};
 use pacman::map::builder::Map;
-use sdl2::render::Texture;
 
 #[test]
 fn test_map_creation() {
     let map = Map::new(RAW_BOARD).unwrap();
 
-    assert!(map.graph.node_count() > 0);
+    assert!(map.graph.nodes().count() > 0);
     assert!(!map.grid_to_node.is_empty());
 
     // Check that some connections were made
@@ -27,67 +26,69 @@ fn test_map_node_positions() {
 
     for (grid_pos, &node_id) in &map.grid_to_node {
         let node = map.graph.get_node(node_id).unwrap();
-        let expected_pos = Vec2::new((grid_pos.x * CELL_SIZE as i32) as f32, (grid_pos.y * CELL_SIZE as i32) as f32)
-            + Vec2::splat(CELL_SIZE as f32 / 2.0);
+        let expected_pos = Vec2::new(
+            (grid_pos.x as i32 * CELL_SIZE as i32) as f32,
+            (grid_pos.y as i32 * CELL_SIZE as i32) as f32,
+        ) + Vec2::splat(CELL_SIZE as f32 / 2.0);
 
         assert_eq!(node.position, expected_pos);
     }
 }
 
-#[test]
-fn test_generate_items() {
-    use pacman::texture::sprite::{AtlasMapper, MapperFrame, SpriteAtlas};
-    use std::collections::HashMap;
+// #[test]
+// fn test_generate_items() {
+//     use pacman::texture::sprite::{AtlasMapper, MapperFrame, SpriteAtlas};
+//     use std::collections::HashMap;
 
-    let map = Map::new(RAW_BOARD).unwrap();
+//     let map = Map::new(RAW_BOARD).unwrap();
 
-    // Create a minimal atlas for testing
-    let mut frames = HashMap::new();
-    frames.insert(
-        "maze/pellet.png".to_string(),
-        MapperFrame {
-            x: 0,
-            y: 0,
-            width: 8,
-            height: 8,
-        },
-    );
-    frames.insert(
-        "maze/energizer.png".to_string(),
-        MapperFrame {
-            x: 8,
-            y: 0,
-            width: 8,
-            height: 8,
-        },
-    );
+//     // Create a minimal atlas for testing
+//     let mut frames = HashMap::new();
+//     frames.insert(
+//         "maze/pellet.png".to_string(),
+//         MapperFrame {
+//             x: 0,
+//             y: 0,
+//             width: 8,
+//             height: 8,
+//         },
+//     );
+//     frames.insert(
+//         "maze/energizer.png".to_string(),
+//         MapperFrame {
+//             x: 8,
+//             y: 0,
+//             width: 8,
+//             height: 8,
+//         },
+//     );
 
-    let mapper = AtlasMapper { frames };
-    let texture = unsafe { std::mem::transmute::<usize, Texture<'static>>(0usize) };
-    let atlas = SpriteAtlas::new(texture, mapper);
+//     let mapper = AtlasMapper { frames };
+//     let texture = unsafe { std::mem::transmute::<usize, Texture<'static>>(0usize) };
+//     let atlas = SpriteAtlas::new(texture, mapper);
 
-    let items = map.generate_items(&atlas).unwrap();
+//     let items = map.generate_items(&atlas).unwrap();
 
-    // Verify we have items
-    assert!(!items.is_empty());
+//     // Verify we have items
+//     assert!(!items.is_empty());
 
-    // Count different types
-    let pellet_count = items
-        .iter()
-        .filter(|item| matches!(item.item_type, pacman::entity::item::ItemType::Pellet))
-        .count();
-    let energizer_count = items
-        .iter()
-        .filter(|item| matches!(item.item_type, pacman::entity::item::ItemType::Energizer))
-        .count();
+//     // Count different types
+//     let pellet_count = items
+//         .iter()
+//         .filter(|item| matches!(item.item_type, pacman::entity::item::ItemType::Pellet))
+//         .count();
+//     let energizer_count = items
+//         .iter()
+//         .filter(|item| matches!(item.item_type, pacman::entity::item::ItemType::Energizer))
+//         .count();
 
-    // Should have both types
-    assert_eq!(pellet_count, 240);
-    assert_eq!(energizer_count, 4);
+//     // Should have both types
+//     assert_eq!(pellet_count, 240);
+//     assert_eq!(energizer_count, 4);
 
-    // All items should be uncollected initially
-    assert!(items.iter().all(|item| !item.is_collected()));
+//     // All items should be uncollected initially
+//     assert!(items.iter().all(|item| !item.is_collected()));
 
-    // All items should have valid node indices
-    assert!(items.iter().all(|item| item.node_index < map.graph.node_count()));
-}
+//     // All items should have valid node indices
+//     assert!(items.iter().all(|item| item.node_index < map.graph.node_count()));
+// }

tests/movement.rs

@@ -0,0 +1,195 @@
+use glam::Vec2;
+use pacman::map::direction::Direction;
+use pacman::map::graph::{Graph, Node};
+use pacman::systems::movement::{BufferedDirection, Position, Velocity};
+
+fn create_test_graph() -> Graph {
+    let mut graph = Graph::new();
+
+    // Add a few test nodes
+    let node0 = graph.add_node(Node {
+        position: Vec2::new(0.0, 0.0),
+    });
+    let node1 = graph.add_node(Node {
+        position: Vec2::new(16.0, 0.0),
+    });
+    let node2 = graph.add_node(Node {
+        position: Vec2::new(0.0, 16.0),
+    });
+
+    // Connect them
+    graph.connect(node0, node1, false, None, Direction::Right).unwrap();
+    graph.connect(node0, node2, false, None, Direction::Down).unwrap();
+
+    graph
+}
+
+#[test]
+fn test_position_is_at_node() {
+    let stopped_pos = Position::Stopped { node: 0 };
+    let moving_pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 8.0,
+    };
+
+    assert!(stopped_pos.is_at_node());
+    assert!(!moving_pos.is_at_node());
+}
+
+#[test]
+fn test_position_current_node() {
+    let stopped_pos = Position::Stopped { node: 5 };
+    let moving_pos = Position::Moving {
+        from: 3,
+        to: 7,
+        remaining_distance: 12.0,
+    };
+
+    assert_eq!(stopped_pos.current_node(), 5);
+    assert_eq!(moving_pos.current_node(), 3);
+}
+
+#[test]
+fn test_position_tick_no_movement_when_stopped() {
+    let mut pos = Position::Stopped { node: 0 };
+    let result = pos.tick(5.0);
+
+    assert!(result.is_none());
+    assert_eq!(pos, Position::Stopped { node: 0 });
+}
+
+#[test]
+fn test_position_tick_no_movement_when_zero_distance() {
+    let mut pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 10.0,
+    };
+    let result = pos.tick(0.0);
+
+    assert!(result.is_none());
+    assert_eq!(
+        pos,
+        Position::Moving {
+            from: 0,
+            to: 1,
+            remaining_distance: 10.0,
+        }
+    );
+}
+
+#[test]
+fn test_position_tick_partial_movement() {
+    let mut pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 10.0,
+    };
+    let result = pos.tick(3.0);
+
+    assert!(result.is_none());
+    assert_eq!(
+        pos,
+        Position::Moving {
+            from: 0,
+            to: 1,
+            remaining_distance: 7.0,
+        }
+    );
+}
+
+#[test]
+fn test_position_tick_exact_arrival() {
+    let mut pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 5.0,
+    };
+    let result = pos.tick(5.0);
+
+    assert!(result.is_none());
+    assert_eq!(pos, Position::Stopped { node: 1 });
+}
+
+#[test]
+fn test_position_tick_overshoot_with_overflow() {
+    let mut pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 3.0,
+    };
+    let result = pos.tick(8.0);
+
+    assert_eq!(result, Some(5.0));
+    assert_eq!(pos, Position::Stopped { node: 1 });
+}
+
+#[test]
+fn test_position_get_pixel_position_stopped() {
+    let graph = create_test_graph();
+    let pos = Position::Stopped { node: 0 };
+
+    let pixel_pos = pos.get_pixel_position(&graph).unwrap();
+    let expected = Vec2::new(
+        0.0 + pacman::constants::BOARD_PIXEL_OFFSET.x as f32,
+        0.0 + pacman::constants::BOARD_PIXEL_OFFSET.y as f32,
+    );
+
+    assert_eq!(pixel_pos, expected);
+}
+
+#[test]
+fn test_position_get_pixel_position_moving() {
+    let graph = create_test_graph();
+    let pos = Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 8.0, // Halfway through a 16-unit edge
+    };
+
+    let pixel_pos = pos.get_pixel_position(&graph).unwrap();
+    // Should be halfway between (0,0) and (16,0), so at (8,0) plus offset
+    let expected = Vec2::new(
+        8.0 + pacman::constants::BOARD_PIXEL_OFFSET.x as f32,
+        0.0 + pacman::constants::BOARD_PIXEL_OFFSET.y as f32,
+    );
+
+    assert_eq!(pixel_pos, expected);
+}
+
+#[test]
+fn test_velocity_basic_properties() {
+    let velocity = Velocity {
+        speed: 2.5,
+        direction: Direction::Up,
+    };
+
+    assert_eq!(velocity.speed, 2.5);
+    assert_eq!(velocity.direction, Direction::Up);
+}
+
+#[test]
+fn test_buffered_direction_none() {
+    let buffered = BufferedDirection::None;
+    assert_eq!(buffered, BufferedDirection::None);
+}
+
+#[test]
+fn test_buffered_direction_some() {
+    let buffered = BufferedDirection::Some {
+        direction: Direction::Left,
+        remaining_time: 0.5,
+    };
+
+    if let BufferedDirection::Some {
+        direction,
+        remaining_time,
+    } = buffered
+    {
+        assert_eq!(direction, Direction::Left);
+        assert_eq!(remaining_time, 0.5);
+    } else {
+        panic!("Expected BufferedDirection::Some");
+    }
+}

tests/pacman.rs

@@ -1,73 +0,0 @@
-use pacman::entity::direction::Direction;
-use pacman::entity::graph::{Graph, Node};
-use pacman::entity::pacman::Pacman;
-use pacman::texture::sprite::{AtlasMapper, MapperFrame, SpriteAtlas};
-use std::collections::HashMap;
-
-fn create_test_graph() -> Graph {
-    let mut graph = Graph::new();
-    let node1 = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 0.0),
-    });
-    let node2 = graph.add_node(Node {
-        position: glam::Vec2::new(16.0, 0.0),
-    });
-    let node3 = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 16.0),
-    });
-
-    graph.connect(node1, node2, false, None, Direction::Right).unwrap();
-    graph.connect(node1, node3, false, None, Direction::Down).unwrap();
-
-    graph
-}
-
-fn create_test_atlas() -> SpriteAtlas {
-    let mut frames = HashMap::new();
-    let directions = ["up", "down", "left", "right"];
-
-    for (i, dir) in directions.iter().enumerate() {
-        frames.insert(
-            format!("pacman/{dir}_a.png"),
-            MapperFrame {
-                x: i as u16 * 16,
-                y: 0,
-                width: 16,
-                height: 16,
-            },
-        );
-        frames.insert(
-            format!("pacman/{dir}_b.png"),
-            MapperFrame {
-                x: i as u16 * 16,
-                y: 16,
-                width: 16,
-                height: 16,
-            },
-        );
-    }
-
-    frames.insert(
-        "pacman/full.png".to_string(),
-        MapperFrame {
-            x: 64,
-            y: 0,
-            width: 16,
-            height: 16,
-        },
-    );
-
-    let mapper = AtlasMapper { frames };
-    let dummy_texture = unsafe { std::mem::zeroed() };
-    SpriteAtlas::new(dummy_texture, mapper)
-}
-
-#[test]
-fn test_pacman_creation() {
-    let graph = create_test_graph();
-    let atlas = create_test_atlas();
-    let pacman = Pacman::new(&graph, 0, &atlas).unwrap();
-
-    assert!(pacman.traverser.position.is_at_node());
-    assert_eq!(pacman.traverser.direction, Direction::Left);
-}

tests/pathfinding.rs

@@ -1,120 +0,0 @@
-use pacman::entity::direction::Direction;
-use pacman::entity::ghost::{Ghost, GhostType};
-use pacman::entity::graph::{Graph, Node};
-use pacman::texture::sprite::{AtlasMapper, MapperFrame, SpriteAtlas};
-use std::collections::HashMap;
-
-fn create_test_atlas() -> SpriteAtlas {
-    let mut frames = HashMap::new();
-    let directions = ["up", "down", "left", "right"];
-    let ghost_types = ["blinky", "pinky", "inky", "clyde"];
-
-    for ghost_type in &ghost_types {
-        for (i, dir) in directions.iter().enumerate() {
-            frames.insert(
-                format!("ghost/{}/{}_{}.png", ghost_type, dir, "a"),
-                MapperFrame {
-                    x: i as u16 * 16,
-                    y: 0,
-                    width: 16,
-                    height: 16,
-                },
-            );
-            frames.insert(
-                format!("ghost/{}/{}_{}.png", ghost_type, dir, "b"),
-                MapperFrame {
-                    x: i as u16 * 16,
-                    y: 16,
-                    width: 16,
-                    height: 16,
-                },
-            );
-        }
-    }
-
-    let mapper = AtlasMapper { frames };
-    let dummy_texture = unsafe { std::mem::zeroed() };
-    SpriteAtlas::new(dummy_texture, mapper)
-}
-
-#[test]
-fn test_ghost_pathfinding() {
-    // Create a simple test graph
-    let mut graph = Graph::new();
-
-    // Add nodes in a simple line: 0 -> 1 -> 2
-    let node0 = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 0.0),
-    });
-    let node1 = graph.add_node(Node {
-        position: glam::Vec2::new(10.0, 0.0),
-    });
-    let node2 = graph.add_node(Node {
-        position: glam::Vec2::new(20.0, 0.0),
-    });
-
-    // Connect the nodes
-    graph.connect(node0, node1, false, None, Direction::Right).unwrap();
-    graph.connect(node1, node2, false, None, Direction::Right).unwrap();
-
-    // Create a test atlas for the ghost
-    let atlas = create_test_atlas();
-
-    // Create a ghost at node 0
-    let ghost = Ghost::new(&graph, node0, GhostType::Blinky, &atlas).unwrap();
-
-    // Test pathfinding from node 0 to node 2
-    let path = ghost.calculate_path_to_target(&graph, node2);
-
-    assert!(path.is_ok());
-    let path = path.unwrap();
-    assert!(
-        path == vec![node0, node1, node2] || path == vec![node2, node1, node0],
-        "Path was not what was expected"
-    );
-}
-
-#[test]
-fn test_ghost_pathfinding_no_path() {
-    // Create a test graph with disconnected components
-    let mut graph = Graph::new();
-
-    let node0 = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 0.0),
-    });
-    let node1 = graph.add_node(Node {
-        position: glam::Vec2::new(10.0, 0.0),
-    });
-
-    // Don't connect the nodes
-    let atlas = create_test_atlas();
-    let ghost = Ghost::new(&graph, node0, GhostType::Blinky, &atlas).unwrap();
-
-    // Test pathfinding when no path exists
-    let path = ghost.calculate_path_to_target(&graph, node1);
-
-    assert!(path.is_err());
-}
-
-#[test]
-fn test_ghost_debug_colors() {
-    let atlas = create_test_atlas();
-    let mut graph = Graph::new();
-    let node = graph.add_node(Node {
-        position: glam::Vec2::new(0.0, 0.0),
-    });
-
-    let blinky = Ghost::new(&graph, node, GhostType::Blinky, &atlas).unwrap();
-    let pinky = Ghost::new(&graph, node, GhostType::Pinky, &atlas).unwrap();
-    let inky = Ghost::new(&graph, node, GhostType::Inky, &atlas).unwrap();
-    let clyde = Ghost::new(&graph, node, GhostType::Clyde, &atlas).unwrap();
-
-    // Test that each ghost has a different debug color
-    let colors = std::collections::HashSet::from([
-        blinky.debug_color(),
-        pinky.debug_color(),
-        inky.debug_color(),
-        clyde.debug_color(),
-    ]);
-    assert_eq!(colors.len(), 4, "All ghost colors should be unique");
-}

tests/player.rs

@@ -0,0 +1,575 @@
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
+
+use pacman::{
+    events::{GameCommand, GameEvent},
+    map::{
+        builder::Map,
+        direction::Direction,
+        graph::{Edge, TraversalFlags},
+    },
+    systems::{
+        can_traverse, player_control_system, player_movement_system, AudioState, BufferedDirection, DebugState, DeltaTime,
+        EntityType, GlobalState, MovementModifiers, PlayerControlled, Position, Velocity,
+    },
+};
+
+// Test helper functions for ECS setup
+fn create_test_world() -> World {
+    let mut world = World::new();
+
+    // Add resources
+    world.insert_resource(GlobalState { exit: false });
+    world.insert_resource(DebugState::default());
+    world.insert_resource(AudioState::default());
+    world.insert_resource(DeltaTime(1.0 / 60.0)); // 60 FPS
+    world.insert_resource(Events::<GameEvent>::default());
+    world.insert_resource(Events::<pacman::error::GameError>::default());
+
+    // Create a simple test map with nodes and edges
+    let test_map = create_test_map();
+    world.insert_resource(test_map);
+
+    world
+}
+
+fn create_test_map() -> Map {
+    // Use the actual RAW_BOARD from constants.rs
+    use pacman::constants::RAW_BOARD;
+    Map::new(RAW_BOARD).expect("Failed to create test map")
+}
+
+fn spawn_test_player(world: &mut World) -> Entity {
+    world
+        .spawn((
+            PlayerControlled,
+            Position::Stopped { node: 0 },
+            Velocity {
+                speed: 1.0,
+                direction: Direction::Right,
+            },
+            BufferedDirection::None,
+            EntityType::Player,
+            MovementModifiers::default(),
+        ))
+        .id()
+}
+
+fn send_game_event(world: &mut World, command: GameCommand) {
+    let mut events = world.resource_mut::<Events<GameEvent>>();
+    events.send(GameEvent::Command(command));
+}
+
+#[test]
+fn test_can_traverse_player_on_all_edges() {
+    let edge = Edge {
+        target: 1,
+        distance: 10.0,
+        direction: Direction::Up,
+        traversal_flags: TraversalFlags::ALL,
+    };
+
+    assert!(can_traverse(EntityType::Player, edge));
+}
+
+#[test]
+fn test_can_traverse_player_on_pacman_only_edges() {
+    let edge = Edge {
+        target: 1,
+        distance: 10.0,
+        direction: Direction::Right,
+        traversal_flags: TraversalFlags::PACMAN,
+    };
+
+    assert!(can_traverse(EntityType::Player, edge));
+}
+
+#[test]
+fn test_can_traverse_player_blocked_on_ghost_only_edges() {
+    let edge = Edge {
+        target: 1,
+        distance: 10.0,
+        direction: Direction::Left,
+        traversal_flags: TraversalFlags::GHOST,
+    };
+
+    assert!(!can_traverse(EntityType::Player, edge));
+}
+
+#[test]
+fn test_can_traverse_ghost_on_all_edges() {
+    let edge = Edge {
+        target: 2,
+        distance: 15.0,
+        direction: Direction::Down,
+        traversal_flags: TraversalFlags::ALL,
+    };
+
+    assert!(can_traverse(EntityType::Ghost, edge));
+}
+
+#[test]
+fn test_can_traverse_ghost_on_ghost_only_edges() {
+    let edge = Edge {
+        target: 2,
+        distance: 15.0,
+        direction: Direction::Up,
+        traversal_flags: TraversalFlags::GHOST,
+    };
+
+    assert!(can_traverse(EntityType::Ghost, edge));
+}
+
+#[test]
+fn test_can_traverse_ghost_blocked_on_pacman_only_edges() {
+    let edge = Edge {
+        target: 2,
+        distance: 15.0,
+        direction: Direction::Right,
+        traversal_flags: TraversalFlags::PACMAN,
+    };
+
+    assert!(!can_traverse(EntityType::Ghost, edge));
+}
+
+#[test]
+fn test_can_traverse_static_entities_flags() {
+    let edge = Edge {
+        target: 3,
+        distance: 8.0,
+        direction: Direction::Left,
+        traversal_flags: TraversalFlags::ALL,
+    };
+
+    // Static entities have empty traversal flags but can still "traverse"
+    // in the sense that empty flags are contained in any flag set
+    // This is the expected behavior since empty ⊆ any set
+    assert!(can_traverse(EntityType::Pellet, edge));
+    assert!(can_traverse(EntityType::PowerPellet, edge));
+}
+
+#[test]
+fn test_entity_type_traversal_flags() {
+    assert_eq!(EntityType::Player.traversal_flags(), TraversalFlags::PACMAN);
+    assert_eq!(EntityType::Ghost.traversal_flags(), TraversalFlags::GHOST);
+    assert_eq!(EntityType::Pellet.traversal_flags(), TraversalFlags::empty());
+    assert_eq!(EntityType::PowerPellet.traversal_flags(), TraversalFlags::empty());
+}
+
+// ============================================================================
+// ECS System Tests
+// ============================================================================
+
+#[test]
+fn test_player_control_system_move_command() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send move command
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Up));
+
+    // Run the system
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that buffered direction was updated
+    let mut query = world.query::<&BufferedDirection>();
+    let buffered_direction = query.single(&world).expect("Player should exist");
+
+    match *buffered_direction {
+        BufferedDirection::Some {
+            direction,
+            remaining_time,
+        } => {
+            assert_eq!(direction, Direction::Up);
+            assert_eq!(remaining_time, 0.25);
+        }
+        BufferedDirection::None => panic!("Expected buffered direction to be set"),
+    }
+}
+
+#[test]
+fn test_player_control_system_exit_command() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send exit command
+    send_game_event(&mut world, GameCommand::Exit);
+
+    // Run the system
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that exit flag was set
+    let state = world.resource::<GlobalState>();
+    assert!(state.exit);
+}
+
+#[test]
+fn test_player_control_system_toggle_debug() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send toggle debug command
+    send_game_event(&mut world, GameCommand::ToggleDebug);
+
+    // Run the system
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that debug state changed
+    let debug_state = world.resource::<DebugState>();
+    assert!(debug_state.enabled);
+}
+
+#[test]
+fn test_player_control_system_mute_audio() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send mute audio command
+    send_game_event(&mut world, GameCommand::MuteAudio);
+
+    // Run the system
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that audio was muted
+    let audio_state = world.resource::<AudioState>();
+    assert!(audio_state.muted);
+
+    // Send mute audio command again to unmute - need fresh events
+    world.resource_mut::<Events<GameEvent>>().clear(); // Clear previous events
+    send_game_event(&mut world, GameCommand::MuteAudio);
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that audio was unmuted
+    let audio_state = world.resource::<AudioState>();
+    assert!(!audio_state.muted, "Audio should be unmuted after second toggle");
+}
+
+#[test]
+fn test_player_control_system_no_player_entity() {
+    let mut world = create_test_world();
+    // Don't spawn a player entity
+
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Up));
+
+    // Run the system - should write an error
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Check that an error was written (we can't easily check Events without manual management,
+    // so for this test we just verify the system ran without panicking)
+    // In a real implementation, you might expose error checking through the ECS world
+}
+
+#[test]
+fn test_player_movement_system_buffered_direction_expires() {
+    let mut world = create_test_world();
+    let player = spawn_test_player(&mut world);
+
+    // Set a buffered direction with short time
+    world.entity_mut(player).insert(BufferedDirection::Some {
+        direction: Direction::Up,
+        remaining_time: 0.01, // Very short time
+    });
+
+    // Set delta time to expire the buffered direction
+    world.insert_resource(DeltaTime(0.02));
+
+    // Run the system
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check that buffered direction expired or remaining time decreased significantly
+    let mut query = world.query::<&BufferedDirection>();
+    let buffered_direction = query.single(&world).expect("Player should exist");
+    match *buffered_direction {
+        BufferedDirection::None => {} // Expected - fully expired
+        BufferedDirection::Some { remaining_time, .. } => {
+            assert!(
+                remaining_time <= 0.0,
+                "Buffered direction should be expired or have non-positive time"
+            );
+        }
+    }
+}
+
+#[test]
+fn test_player_movement_system_start_moving_from_stopped() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Player starts at node 0, facing right (towards node 1)
+    // Should start moving when system runs
+
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check that player started moving
+    let mut query = world.query::<&Position>();
+    let position = query.single(&world).expect("Player should exist");
+
+    match *position {
+        Position::Moving { from, .. } => {
+            assert_eq!(from, 0, "Player should start from node 0");
+            // Don't assert exact target node since the real map has different connectivity
+        }
+        Position::Stopped { .. } => {} // May stay stopped if no valid edge in current direction
+    }
+}
+
+#[test]
+fn test_player_movement_system_buffered_direction_change() {
+    let mut world = create_test_world();
+    let player = spawn_test_player(&mut world);
+
+    // Set a buffered direction to go down (towards node 2)
+    world.entity_mut(player).insert(BufferedDirection::Some {
+        direction: Direction::Down,
+        remaining_time: 1.0,
+    });
+
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check that player started moving down instead of right
+    let mut query = world.query::<(&Position, &Velocity, &BufferedDirection)>();
+    let (position, _velocity, _buffered_direction) = query.single(&world).expect("Player should exist");
+
+    match *position {
+        Position::Moving { from, to, .. } => {
+            assert_eq!(from, 0);
+            assert_eq!(to, 2); // Should be moving to node 2 (down)
+        }
+        Position::Stopped { .. } => panic!("Player should have started moving"),
+    }
+
+    // Check if the movement actually happened based on the real map connectivity
+    // The buffered direction might not be consumed if there's no valid edge in that direction
+}
+
+#[test]
+fn test_player_movement_system_no_valid_edge() {
+    let mut world = create_test_world();
+    let player = spawn_test_player(&mut world);
+
+    // Set velocity to direction with no edge
+    world.entity_mut(player).insert(Velocity {
+        speed: 1.0,
+        direction: Direction::Up, // No edge up from node 0
+    });
+
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Player should remain stopped
+    let mut query = world.query::<&Position>();
+    let position = query.single(&world).expect("Player should exist");
+
+    match *position {
+        Position::Stopped { node } => assert_eq!(node, 0),
+        Position::Moving { .. } => panic!("Player shouldn't be able to move without valid edge"),
+    }
+}
+
+#[test]
+fn test_player_movement_system_continue_moving() {
+    let mut world = create_test_world();
+    let player = spawn_test_player(&mut world);
+
+    // Set player to already be moving
+    world.entity_mut(player).insert(Position::Moving {
+        from: 0,
+        to: 1,
+        remaining_distance: 50.0,
+    });
+
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check that player continued moving and distance decreased
+    let mut query = world.query::<&Position>();
+    let position = query.single(&world).expect("Player should exist");
+
+    match *position {
+        Position::Moving { remaining_distance, .. } => {
+            assert!(remaining_distance < 50.0); // Should have moved
+        }
+        Position::Stopped { .. } => {
+            // If player reached destination, that's also valid
+        }
+    }
+}
+
+// ============================================================================
+// Integration Tests
+// ============================================================================
+
+#[test]
+fn test_full_player_input_to_movement_flow() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send move command
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Down));
+
+    // Run control system to process input
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Run movement system to execute movement
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check final state - player should be moving down
+    let mut query = world.query::<(&Position, &Velocity, &BufferedDirection)>();
+    let (position, _velocity, _buffered_direction) = query.single(&world).expect("Player should exist");
+
+    match *position {
+        Position::Moving { from, to, .. } => {
+            assert_eq!(from, 0);
+            assert_eq!(to, 2); // Moving to node 2 (down)
+        }
+        Position::Stopped { .. } => panic!("Player should be moving"),
+    }
+
+    // Check that player moved in the buffered direction if possible
+    // In the real map, the buffered direction may not be consumable if there's no valid edge
+}
+
+#[test]
+fn test_buffered_direction_timing() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send move command
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Up));
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Run movement system multiple times with small delta times
+    world.insert_resource(DeltaTime(0.1)); // 0.1 seconds
+
+    // First run - buffered direction should still be active
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+    let mut query = world.query::<&BufferedDirection>();
+    let buffered_direction = query.single(&world).expect("Player should exist");
+
+    match *buffered_direction {
+        BufferedDirection::Some { remaining_time, .. } => {
+            assert!(remaining_time > 0.0);
+            assert!(remaining_time < 0.25);
+        }
+        BufferedDirection::None => panic!("Buffered direction should still be active"),
+    }
+
+    // Run again to fully expire the buffered direction
+    world.insert_resource(DeltaTime(0.2)); // Total 0.3 seconds, should expire
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    let buffered_direction = query.single(&world).expect("Player should exist");
+    assert_eq!(*buffered_direction, BufferedDirection::None);
+}
+
+#[test]
+fn test_multiple_rapid_direction_changes() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Send multiple rapid direction changes
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Up));
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Down));
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Left));
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+
+    // Only the last direction should be buffered
+    let mut query = world.query::<&BufferedDirection>();
+    let buffered_direction = query.single(&world).expect("Player should exist");
+
+    match *buffered_direction {
+        BufferedDirection::Some { direction, .. } => {
+            assert_eq!(direction, Direction::Left);
+        }
+        BufferedDirection::None => panic!("Expected buffered direction"),
+    }
+}
+
+#[test]
+fn test_player_state_persistence_across_systems() {
+    let mut world = create_test_world();
+    let _player = spawn_test_player(&mut world);
+
+    // Test that multiple commands can be processed - but need to handle events properly
+    // Clear any existing events first
+    world.resource_mut::<Events<GameEvent>>().clear();
+
+    // Toggle debug mode
+    send_game_event(&mut world, GameCommand::ToggleDebug);
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+    let debug_state_after_toggle = *world.resource::<DebugState>();
+
+    // Clear events and mute audio
+    world.resource_mut::<Events<GameEvent>>().clear();
+    send_game_event(&mut world, GameCommand::MuteAudio);
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+    let audio_muted_after_toggle = world.resource::<AudioState>().muted;
+
+    // Clear events and move player
+    world.resource_mut::<Events<GameEvent>>().clear();
+    send_game_event(&mut world, GameCommand::MovePlayer(Direction::Down));
+    world
+        .run_system_once(player_control_system)
+        .expect("System should run successfully");
+    world
+        .run_system_once(player_movement_system)
+        .expect("System should run successfully");
+
+    // Check that all state changes persisted
+    // Variables already captured above during individual tests
+    let mut query = world.query::<&Position>();
+    let position = *query.single(&world).expect("Player should exist");
+
+    // Check that the state changes persisted individually
+    assert!(debug_state_after_toggle.enabled, "Debug state should have toggled");
+    assert!(audio_muted_after_toggle, "Audio should be muted");
+
+    // Player position depends on actual map connectivity
+    match position {
+        Position::Moving { .. } => {}  // Good - player is moving
+        Position::Stopped { .. } => {} // Also ok - might not have valid edge in that direction
+    }
+}

tests/profiling.rs

@@ -0,0 +1,60 @@
+use pacman::systems::profiling::{SystemId, SystemTimings};
+use std::time::Duration;
+
+#[test]
+fn test_timing_statistics() {
+    let timings = SystemTimings::default();
+
+    // 10ms average, 2ms std dev
+    timings.add_timing(SystemId::PlayerControls, Duration::from_millis(10));
+    timings.add_timing(SystemId::PlayerControls, Duration::from_millis(12));
+    timings.add_timing(SystemId::PlayerControls, Duration::from_millis(8));
+
+    // 2ms average, 1ms std dev
+    timings.add_timing(SystemId::Blinking, Duration::from_millis(3));
+    timings.add_timing(SystemId::Blinking, Duration::from_millis(2));
+    timings.add_timing(SystemId::Blinking, Duration::from_millis(1));
+    fn close_enough(a: Duration, b: Duration) -> bool {
+        if a > b {
+            a - b < Duration::from_micros(500) // 0.1ms
+        } else {
+            b - a < Duration::from_micros(500)
+        }
+    }
+
+    let stats = timings.get_stats();
+    let (avg, std_dev) = stats.get(&SystemId::PlayerControls).unwrap();
+
+    // Average should be 10ms, standard deviation should be small
+    assert!(close_enough(*avg, Duration::from_millis(10)), "avg: {:?}", avg);
+    assert!(close_enough(*std_dev, Duration::from_millis(2)), "std_dev: {:?}", std_dev);
+
+    let (total_avg, total_std) = timings.get_total_stats();
+    assert!(
+        close_enough(total_avg, Duration::from_millis(18)),
+        "total_avg: {:?}",
+        total_avg
+    );
+    assert!(
+        close_enough(total_std, Duration::from_millis(12)),
+        "total_std: {:?}",
+        total_std
+    );
+}
+
+// #[test]
+// fn test_window_size_limit() {
+//     let timings = SystemTimings::default();
+
+//     // Add more than 90 timings to test window size limit
+//     for i in 0..100 {
+//         timings.add_timing("test_system", Duration::from_millis(i));
+//     }
+
+//     let stats = timings.get_stats();
+//     let (avg, _) = stats.get("test_system").unwrap();
+
+//     // Should only keep the last 90 values, so average should be around 55ms
+//     // (average of 10-99)
+//     assert!((avg.as_millis() as f64 - 55.0).abs() < 5.0);
+// }

tests/sprite.rs

@@ -1,5 +1,5 @@
 use glam::U16Vec2;
-use pacman::texture::sprite::{AtlasMapper, AtlasTile, MapperFrame, Sprite, SpriteAtlas};
+use pacman::texture::sprite::{AtlasMapper, AtlasTile, MapperFrame, SpriteAtlas};
 use sdl2::pixels::Color;
 use std::collections::HashMap;
 
@@ -13,10 +13,8 @@ fn test_sprite_atlas_basic() {
     frames.insert(
         "test".to_string(),
         MapperFrame {
-            x: 10,
-            y: 20,
-            width: 32,
-            height: 64,
+            pos: U16Vec2::new(10, 20),
+            size: U16Vec2::new(32, 64),
         },
     );
 
@@ -38,19 +36,15 @@ fn test_sprite_atlas_multiple_tiles() {
     frames.insert(
         "tile1".to_string(),
         MapperFrame {
-            x: 0,
-            y: 0,
-            width: 32,
-            height: 32,
+            pos: U16Vec2::new(0, 0),
+            size: U16Vec2::new(32, 32),
         },
     );
     frames.insert(
         "tile2".to_string(),
         MapperFrame {
-            x: 32,
-            y: 0,
-            width: 64,
-            height: 64,
+            pos: U16Vec2::new(32, 0),
+            size: U16Vec2::new(64, 64),
         },
     );
 
@@ -92,12 +86,3 @@ fn test_atlas_tile_new_and_with_color() {
     let tile_with_color = tile.with_color(color);
     assert_eq!(tile_with_color.color, Some(color));
 }
-
-#[test]
-fn test_sprite_new() {
-    let atlas_tile = AtlasTile::new(U16Vec2::new(0, 0), U16Vec2::new(16, 16), None);
-    let sprite = Sprite::new(atlas_tile);
-
-    assert_eq!(sprite.atlas_tile.pos, atlas_tile.pos);
-    assert_eq!(sprite.atlas_tile.size, atlas_tile.size);
-}

tests/text.rs

@@ -107,3 +107,23 @@ fn test_text_scale() -> Result<(), String> {
 
     Ok(())
 }
+
+#[test]
+fn test_text_color() -> Result<(), String> {
+    let mut text_texture = TextTexture::new(1.0);
+
+    // Test default color (should be None initially)
+    assert_eq!(text_texture.color(), None);
+
+    // Test setting color
+    let test_color = sdl2::pixels::Color::YELLOW;
+    text_texture.set_color(test_color);
+    assert_eq!(text_texture.color(), Some(test_color));
+
+    // Test changing color
+    let new_color = sdl2::pixels::Color::RED;
+    text_texture.set_color(new_color);
+    assert_eq!(text_texture.color(), Some(new_color));
+
+    Ok(())
+}

tests/tracing_buffer.rs

@@ -0,0 +1,19 @@
+use pacman::platform::tracing_buffer::SwitchableWriter;
+use std::io::Write;
+
+#[test]
+fn test_switchable_writer_buffering() {
+    let mut writer = SwitchableWriter::default();
+
+    // Write some data while in buffered mode
+    writer.write_all(b"Hello, ").unwrap();
+    writer.write_all(b"world!").unwrap();
+    writer.write_all(b"This is buffered content.\n").unwrap();
+
+    // Switch to direct mode (this should flush to stdout and show buffer size)
+    // In a real test we can't easily capture stdout, so we'll just verify it doesn't panic
+    writer.switch_to_direct_mode().unwrap();
+
+    // Write more data in direct mode
+    writer.write_all(b"Direct output after flush\n").unwrap();
+}

web.build.ts

@@ -1,7 +1,7 @@
 import { $ } from "bun";
 import { existsSync, promises as fs } from "fs";
 import { platform } from "os";
-import { dirname, join, relative, resolve } from "path";
+import { basename, dirname, join, relative, resolve } from "path";
 import { match, P } from "ts-pattern";
 import { configure, getConsoleSink, getLogger } from "@logtape/logtape";
 
@@ -79,16 +79,19 @@ async function build(release: boolean, env: Record<string, string> | null) {
 
   // The files to copy into 'dist'
   const files = [
-    ...["index.html", "favicon.ico", "build.css", "TerminalVector.ttf"].map(
-      (file) => ({
-        src: join(siteFolder, file),
-        dest: join(dist, file),
-        optional: false,
-      })
-    ),
+    ...[
+      "index.html",
+      "favicon.ico",
+      "build.css",
+      "../game/TerminalVector.ttf",
+    ].map((file) => ({
+      src: resolve(join(siteFolder, file)),
+      dest: join(dist, basename(file)),
+      optional: false,
+    })),
     ...["pacman.wasm", "pacman.js", "deps/pacman.data"].map((file) => ({
       src: join(outputFolder, file),
-      dest: join(dist, file.split("/").pop() || file),
+      dest: join(dist, basename(file)),
       optional: false,
     })),
     {