feat: ghosts system

Cargo.toml

@@ -6,7 +6,7 @@ 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"
@@ -15,14 +15,23 @@ 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 = [] }
+glam = "0.30.5"
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.142"
 smallvec = "1.15.1"
 strum = "0.27.2"
 strum_macros = "0.27.2"
+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
@@ -57,3 +66,8 @@ aarch64-apple-darwin = { triplet = "arm64-osx" }
 
 [target.'cfg(target_os = "emscripten")'.dependencies]
 libc = "0.2.175"
+
+[build-dependencies]
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+phf = { version = "0.12.1", features = ["macros"] }

README.md

@@ -1,6 +1,6 @@
 # Pac-Man
 
-[![Tests Status][badge-test]][test] [![Build Status][badge-build]][build] [![Code Coverage][badge-coverage]][coverage] [![Online Demo][badge-online-demo]][demo] [![Last Commit][badge-last-commit]][commits]
+[![Tests Status][badge-test]][test] [![Build Status][badge-build]][build] [![If you're seeing this, Coveralls.io is broken again and it's not my fault.][badge-coverage]][coverage] [![Online Demo][badge-online-demo]][demo] [![Last Commit][badge-last-commit]][commits]
 
 [badge-test]: https://github.com/Xevion/Pac-Man/actions/workflows/tests.yaml/badge.svg
 [badge-build]: https://github.com/Xevion/Pac-Man/actions/workflows/build.yaml/badge.svg

build.rs

@@ -0,0 +1,50 @@
+use std::collections::HashMap;
+use std::env;
+use std::fs::File;
+use std::io::{BufWriter, Write};
+use std::path::Path;
+
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize)]
+struct AtlasMapper {
+    frames: HashMap<String, MapperFrame>,
+}
+
+#[derive(Copy, Clone, Debug, Deserialize)]
+struct MapperFrame {
+    x: u16,
+    y: u16,
+    width: u16,
+    height: u16,
+}
+
+fn main() {
+    let path = Path::new(&env::var("OUT_DIR").unwrap()).join("atlas_data.rs");
+    let mut file = BufWriter::new(File::create(&path).unwrap());
+
+    let atlas_json = include_str!("./assets/game/atlas.json");
+    let atlas_mapper: AtlasMapper = serde_json::from_str(atlas_json).unwrap();
+
+    writeln!(&mut file, "use phf::phf_map;").unwrap();
+
+    writeln!(&mut file, "use crate::texture::sprite::MapperFrame;").unwrap();
+
+    writeln!(
+        &mut file,
+        "pub static ATLAS_FRAMES: phf::Map<&'static str, MapperFrame> = phf_map! {{"
+    )
+    .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, "}};").unwrap();
+    println!("cargo:rerun-if-changed=assets/game/atlas.json");
+}

src/app.rs

@@ -1,13 +1,10 @@
 use std::time::{Duration, Instant};
 
 use glam::Vec2;
-use sdl2::event::{Event, WindowEvent};
-use sdl2::keyboard::Keycode;
-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, event};
 
 use crate::error::{GameError, GameResult};
 
@@ -16,13 +13,10 @@ use crate::game::Game;
 use crate::platform::get_platform;
 
 pub struct App {
-    game: Game,
-    canvas: Canvas<Window>,
-    event_pump: &'static mut EventPump,
-    backbuffer: Texture<'static>,
-    paused: bool,
+    pub game: Game,
     last_tick: Instant,
-    cursor_pos: Vec2,
+    focused: bool,
+    _cursor_pos: Vec2,
 }
 
 impl App {
@@ -51,35 +45,28 @@ impl App {
             .build()
             .map_err(|e| GameError::Sdl(e.to_string()))?;
 
-        let mut canvas = window.into_canvas().build().map_err(|e| GameError::Sdl(e.to_string()))?;
+        let canvas = Box::leak(Box::new(
+            window
+                .into_canvas()
+                .accelerated()
+                .build()
+                .map_err(|e| GameError::Sdl(e.to_string()))?,
+        ));
+
         canvas
             .set_logical_size(CANVAS_SIZE.x, CANVAS_SIZE.y)
             .map_err(|e| GameError::Sdl(e.to_string()))?;
 
-        let texture_creator: &'static TextureCreator<WindowContext> = Box::leak(Box::new(canvas.texture_creator()));
+        let texture_creator: &'static mut TextureCreator<WindowContext> = Box::leak(Box::new(canvas.texture_creator()));
 
-        let mut game = Game::new(texture_creator)?;
+        let game = Game::new(canvas, texture_creator, event_pump)?;
         // game.audio.set_mute(cfg!(debug_assertions));
 
-        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);
-
-        // 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(Self {
+        Ok(App {
             game,
-            canvas,
-            event_pump,
-            backbuffer,
-            paused: false,
+            focused: true,
             last_tick: Instant::now(),
-            cursor_pos: Vec2::ZERO,
+            _cursor_pos: Vec2::ZERO,
         })
     }
 
@@ -87,78 +74,46 @@ impl App {
         {
             let start = Instant::now();
 
-            for event in self.event_pump.poll_iter() {
-                match event {
-                    Event::Window { win_event, .. } => match win_event {
-                        WindowEvent::Hidden => {
-                            event!(tracing::Level::DEBUG, "Window hidden");
-                        }
-                        WindowEvent::Shown => {
-                            event!(tracing::Level::DEBUG, "Window shown");
-                        }
-                        _ => {}
-                    },
-                    // It doesn't really make sense to have this available in the browser
-                    #[cfg(not(target_os = "emscripten"))]
-                    Event::Quit { .. }
-                    | Event::KeyDown {
-                        keycode: Some(Keycode::Escape) | Some(Keycode::Q),
-                        ..
-                    } => {
-                        event!(tracing::Level::INFO, "Exit requested. Exiting...");
-                        return false;
-                    }
-                    Event::KeyDown {
-                        keycode: Some(Keycode::P),
-                        ..
-                    } => {
-                        self.paused = !self.paused;
-                        event!(tracing::Level::INFO, "{}", if self.paused { "Paused" } else { "Unpaused" });
-                    }
-                    Event::KeyDown {
-                        keycode: Some(Keycode::Space),
-                        ..
-                    } => {
-                        self.game.toggle_debug_mode();
-                    }
-                    Event::KeyDown { keycode: Some(key), .. } => {
-                        self.game.keyboard_event(key);
-                    }
-                    Event::MouseMotion { x, y, .. } => {
-                        // Convert window coordinates to logical coordinates
-                        self.cursor_pos = Vec2::new(x as f32, y as f32);
-                    }
-                    _ => {}
-                }
-            }
+            // for event in self
+            //     .game
+            //     .world
+            //     .get_non_send_resource_mut::<&'static mut EventPump>()
+            //     .unwrap()
+            //     .poll_iter()
+            // {
+            //     match event {
+            //         Event::Window { win_event, .. } => match win_event {
+            //             WindowEvent::FocusGained => {
+            //                 self.focused = true;
+            //             }
+            //             WindowEvent::FocusLost => {
+            //                 self.focused = false;
+            //             }
+            //             _ => {}
+            //         },
+            //         Event::MouseMotion { x, y, .. } => {
+            //             // Convert window coordinates to logical coordinates
+            //             self.cursor_pos = Vec2::new(x as f32, y as f32);
+            //         }
+            //         _ => {}
+            //     }
+            // }
 
             let dt = self.last_tick.elapsed().as_secs_f32();
             self.last_tick = Instant::now();
 
-            if !self.paused {
-                self.game.tick(dt);
-                if let Err(e) = self.game.draw(&mut self.canvas, &mut self.backbuffer) {
-                    error!("Failed to draw game: {}", e);
-                }
-                if let Err(e) = self
-                    .game
-                    .present_backbuffer(&mut self.canvas, &self.backbuffer, self.cursor_pos)
-                {
-                    error!("Failed to present backbuffer: {}", e);
-                }
+            let exit = self.game.tick(dt);
+
+            if exit {
+                return false;
             }
 
+            // 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);
+                    get_platform().sleep(time, self.focused);
                 }
-            } else {
-                event!(
-                    tracing::Level::WARN,
-                    "Game loop behind schedule by: {:?}",
-                    start.elapsed() - LOOP_TIME
-                );
             }
 
             true

src/asset.rs

@@ -12,8 +12,6 @@ pub enum Asset {
     Wav3,
     Wav4,
     Atlas,
-    AtlasJson,
-    // Add more as needed
 }
 
 impl Asset {
@@ -26,7 +24,6 @@ impl Asset {
             Wav3 => "sound/waka/3.ogg",
             Wav4 => "sound/waka/4.ogg",
             Atlas => "atlas.png",
-            AtlasJson => "atlas.json",
         }
     }
 }
@@ -36,6 +33,7 @@ mod imp {
     use crate::error::AssetError;
     use crate::platform::get_platform;
 
+    /// Returns the raw bytes of the given asset.
     pub fn get_asset_bytes(asset: Asset) -> Result<Cow<'static, [u8]>, AssetError> {
         get_platform().get_asset_bytes(asset)
     }

src/entity/collision.rs

@@ -1,128 +1,128 @@
-use smallvec::SmallVec;
-use std::collections::HashMap;
+// use smallvec::SmallVec;
+// use std::collections::HashMap;
 
-use crate::entity::{graph::NodeId, traversal::Position};
+// 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;
+// /// 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())
-    }
-}
+//     /// 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,
-}
+// /// 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;
+// /// 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;
+// 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);
+//         self.entity_positions.insert(id, position);
+//         self.update_node_entities(id, position);
 
-        id
-    }
+//         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);
-        }
+//     /// 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);
-    }
+//         // 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);
-        }
-    }
+//     /// 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 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);
+//     /// 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));
-        }
+//         for node in nodes {
+//             collisions.extend(self.entities_at_node(node));
+//         }
 
-        // Remove duplicates
-        collisions.sort_unstable();
-        collisions.dedup();
-        collisions
-    }
+//         // 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);
-        }
-    }
+//     /// 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);
-                }
-            }
-        }
-    }
-}
+//     /// 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);
+// /// 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))
+//     // 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
-}
+//     // 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
-}
+// /// 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/direction.rs

@@ -1,11 +1,13 @@
 use glam::IVec2;
 
 /// The four cardinal directions.
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
+#[repr(usize)]
 pub enum Direction {
     Up,
     Down,
     Left,
+    #[default]
     Right,
 }
 

src/entity/ghost.rs

@@ -1,254 +1,254 @@
-//! 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.
+// //! 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 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::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};
+// 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)
-}
+// /// 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,
-}
+// /// 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",
-        }
-    }
+// 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,
-        }
-    }
-}
+//     /// 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,
-}
+// /// 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
-    }
+// impl Entity for Ghost {
+//     fn traverser(&self) -> &Traverser {
+//         &self.traverser
+//     }
 
-    fn traverser_mut(&mut self) -> &mut Traverser {
-        &mut self.traverser
-    }
+//     fn traverser_mut(&mut self) -> &mut Traverser {
+//         &mut self.traverser
+//     }
 
-    fn texture(&self) -> &DirectionalAnimatedTexture {
-        &self.texture
-    }
+//     fn texture(&self) -> &DirectionalAnimatedTexture {
+//         &self.texture
+//     }
 
-    fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
-        &mut self.texture
-    }
+//     fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
+//         &mut self.texture
+//     }
 
-    fn speed(&self) -> f32 {
-        self.speed
-    }
+//     fn speed(&self) -> f32 {
+//         self.speed
+//     }
 
-    fn can_traverse(&self, edge: Edge) -> bool {
-        can_ghost_traverse(edge)
-    }
+//     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);
-        }
+//     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);
-    }
-}
+//         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];
+// 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"
-                        )))
-                    })?,
-            ];
+//         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"
-                            )))
-                        })?,
-                ];
+//             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)?);
-        }
+//             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(),
-        })
-    }
+//         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];
+//     /// 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();
+//         // 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();
+//             // 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);
-            }
-        }
-    }
+//             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();
+//     /// 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,
-        );
+//         // 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
-            )))
-        })
-    }
+//         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
-        }
-    }
-}
+//     /// 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
-    }
-}
+// impl Collidable for Ghost {
+//     fn position(&self) -> crate::entity::traversal::Position {
+//         self.traverser.position
+//     }
+// }

src/entity/graph.rs

@@ -1,18 +1,21 @@
 use glam::Vec2;
 
+use crate::systems::movement::NodeId;
+
 use super::direction::Direction;
 
-/// A unique identifier for a node, represented by its index in the graph's storage.
-pub type NodeId = usize;
+use bitflags::bitflags;
 
-/// 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,
+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).
@@ -25,7 +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.
@@ -133,8 +136,8 @@ impl Graph {
             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.");
@@ -162,7 +165,7 @@ impl Graph {
         replace: bool,
         distance: Option<f32>,
         direction: Direction,
-        permissions: EdgePermissions,
+        traversal_flags: TraversalFlags,
     ) -> Result<(), &'static str> {
         let edge = Edge {
             target: to,
@@ -181,7 +184,7 @@ impl Graph {
                 }
             },
             direction,
-            permissions,
+            traversal_flags,
         };
 
         if from >= self.adjacency_list.len() {
@@ -220,6 +223,19 @@ impl Graph {
         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, 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)

src/entity/item.rs

@@ -1,117 +1,117 @@
-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};
+// 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,
-    },
-}
+// #[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(),
-        }
-    }
-}
+// 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,
-}
+// #[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,
-        }
-    }
+// 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 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,
-}
+// 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,
-        }
-    }
+// 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 is_collected(&self) -> bool {
+//         self.collected
+//     }
 
-    pub fn collect(&mut self) {
-        self.collected = true;
-    }
+//     pub fn collect(&mut self) {
+//         self.collected = true;
+//     }
 
-    pub fn get_score(&self) -> u32 {
-        self.item_type.get_score()
-    }
+//     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(());
-        }
+//     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();
+//         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(())
-    }
-}
+//         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)
-    }
-}
+// impl Collidable for Item {
+//     fn position(&self) -> crate::entity::traversal::Position {
+//         crate::entity::traversal::Position::AtNode(self.node_index)
+//     }
+// }

src/entity/mod.rs

@@ -5,4 +5,3 @@ pub mod graph;
 pub mod item;
 pub mod pacman;
 pub mod r#trait;
-pub mod traversal;

src/entity/pacman.rs

@@ -1,134 +1,115 @@
-//! 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.
+// //! 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 sdl2::keyboard::Keycode;
-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 tracing::error;
 
-use crate::error::{GameError, GameResult, TextureError};
+// 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)
-}
+// /// 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,
-}
+// /// 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
-    }
+// impl Entity for Pacman {
+//     fn traverser(&self) -> &Traverser {
+//         &self.traverser
+//     }
 
-    fn traverser_mut(&mut self) -> &mut Traverser {
-        &mut self.traverser
-    }
+//     fn traverser_mut(&mut self) -> &mut Traverser {
+//         &mut self.traverser
+//     }
 
-    fn texture(&self) -> &DirectionalAnimatedTexture {
-        &self.texture
-    }
+//     fn texture(&self) -> &DirectionalAnimatedTexture {
+//         &self.texture
+//     }
 
-    fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
-        &mut self.texture
-    }
+//     fn texture_mut(&mut self) -> &mut DirectionalAnimatedTexture {
+//         &mut self.texture
+//     }
 
-    fn speed(&self) -> f32 {
-        1.125
-    }
+//     fn speed(&self) -> f32 {
+//         1.125
+//     }
 
-    fn can_traverse(&self, edge: Edge) -> bool {
-        can_pacman_traverse(edge)
-    }
+//     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);
-    }
-}
+//     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];
+// 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())))?,
-            ];
+//         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"))))?];
+//             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)?);
-        }
+//             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),
-        })
-    }
+//         Ok(Self {
+//             traverser: Traverser::new(graph, start_node, Direction::Left, &can_pacman_traverse),
+//             texture: DirectionalAnimatedTexture::new(textures, stopped_textures),
+//         })
+//     }
+// }
 
-    /// Handles keyboard input to change Pac-Man's direction.
-    ///
-    /// Maps arrow keys to directions and queues the direction change
-    /// for the next valid intersection.
-    pub fn handle_key(&mut self, keycode: Keycode) {
-        let direction = match keycode {
-            Keycode::Up => Some(Direction::Up),
-            Keycode::Down => Some(Direction::Down),
-            Keycode::Left => Some(Direction::Left),
-            Keycode::Right => Some(Direction::Right),
-            _ => None,
-        };
-
-        if let Some(direction) = direction {
-            self.traverser.set_next_direction(direction);
-        }
-    }
-}
-
-impl Collidable for Pacman {
-    fn position(&self) -> crate::entity::traversal::Position {
-        self.traverser.position
-    }
-}
+// impl Collidable for Pacman {
+//     fn position(&self) -> crate::entity::traversal::Position {
+//         self.traverser.position
+//     }
+// }

src/entity/trait.rs

@@ -1,114 +1,114 @@
-//! 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.
+// //! 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 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;
+// 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;
+// /// 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 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 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 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;
+//     /// 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;
+//     /// 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);
+//     /// 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)
-            }
-        };
+//     /// 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,
-        ))
-    }
+//         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,
-        }
-    }
+//     /// 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);
-    }
+//     /// 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),
-        );
+//     /// 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())))?;
-        }
+//         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(())
-    }
-}
+//         Ok(())
+//     }
+// }

src/entity/traversal.rs

@@ -1,229 +0,0 @@
-use tracing::error;
-
-use crate::error::GameResult;
-
-use super::direction::Direction;
-use super::graph::{Edge, Graph, NodeId};
-
-/// 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(Debug, PartialEq, Clone, Copy)]
-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,
-    },
-}
-
-#[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(_))
-    }
-}
-
-/// 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 {
-    /// Creates a new traverser starting at the given node ID.
-    ///
-    /// The traverser will immediately attempt to start moving in the initial direction.
-    pub fn new<F>(graph: &Graph, start_node: NodeId, initial_direction: Direction, can_traverse: &F) -> Self
-    where
-        F: Fn(Edge) -> bool,
-    {
-        let mut traverser = Traverser {
-            position: Position::AtNode(start_node),
-            direction: initial_direction,
-            next_direction: Some((initial_direction, 1)),
-        };
-
-        // This will kickstart the traverser into motion
-        if let Err(e) = traverser.advance(graph, 0.0, can_traverse) {
-            error!("Traverser initialization error: {}", e);
-        }
-
-        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

@@ -5,11 +5,13 @@
 
 use std::io;
 
+use bevy_ecs::event::Event;
+
 /// Main error type for the Pac-Man game.
 ///
 /// This is the primary error type that should be used in public APIs.
 /// It can represent any error that can occur during game operation.
-#[derive(thiserror::Error, Debug)]
+#[derive(thiserror::Error, Debug, Event)]
 pub enum GameError {
     #[error("Asset error: {0}")]
     Asset(#[from] AssetError),

src/events.rs

@@ -0,0 +1,23 @@
+use bevy_ecs::prelude::*;
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum GameCommand {
+    Exit,
+    MovePlayer(crate::entity::direction::Direction),
+    ToggleDebug,
+    MuteAudio,
+    ResetLevel,
+    TogglePause,
+}
+
+#[derive(Event, Clone, Copy, Debug, PartialEq, Eq)]
+pub enum GameEvent {
+    Command(GameCommand),
+    Collision(Entity, Entity),
+}
+
+impl From<GameCommand> for GameEvent {
+    fn from(command: GameCommand) -> Self {
+        GameEvent::Command(command)
+    }
+}

src/game/mod.rs

@@ -1,327 +1,632 @@
 //! This module contains the main game logic and state.
 
-use glam::{UVec2, Vec2};
-use rand::{rngs::SmallRng, Rng, SeedableRng};
-use sdl2::{
-    keyboard::Keycode,
-    pixels::Color,
-    render::{Canvas, RenderTarget, Texture, TextureCreator},
-    video::WindowContext,
+include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
+
+use crate::constants::CANVAS_SIZE;
+use crate::entity::direction::Direction;
+use crate::error::{GameError, GameResult, TextureError};
+use crate::events::GameEvent;
+use crate::map::builder::Map;
+use crate::systems::blinking::Blinking;
+use crate::systems::movement::{Movable, MovementState, Position};
+use crate::systems::{
+    audio::{audio_system, AudioEvent, AudioResource},
+    blinking::blinking_system,
+    collision::collision_system,
+    components::{
+        AudioState, Collider, DeltaTime, DirectionalAnimated, EntityType, GhostBehavior, GhostBundle, GhostCollider, GhostType,
+        GlobalState, ItemBundle, ItemCollider, PacmanCollider, PlayerBundle, PlayerControlled, RenderDirty, Renderable,
+        ScoreResource,
+    },
+    control::player_system,
+    debug::{debug_render_system, DebugState, DebugTextureResource},
+    ghost::ghost_ai_system,
+    input::input_system,
+    item::item_system,
+    movement::movement_system,
+    profiling::{profile, SystemTimings},
+    render::{directional_render_system, dirty_render_system, render_system, BackbufferResource, MapTextureResource},
 };
+use crate::texture::animated::AnimatedTexture;
+use bevy_ecs::schedule::IntoScheduleConfigs;
+use bevy_ecs::system::NonSendMut;
+use bevy_ecs::{
+    event::EventRegistry,
+    observer::Trigger,
+    schedule::Schedule,
+    system::{Res, ResMut},
+    world::World,
+};
+use sdl2::image::LoadTexture;
+use sdl2::render::{Canvas, ScaleMode, TextureCreator};
+use sdl2::video::{Window, WindowContext};
+use sdl2::EventPump;
 
-use crate::error::{EntityError, GameError, GameResult};
-
-use crate::entity::{
-    collision::{Collidable, CollisionSystem, EntityId},
-    ghost::{Ghost, GhostType},
-    pacman::Pacman,
-    r#trait::Entity,
+use crate::{
+    asset::{get_asset_bytes, Asset},
+    constants,
+    events::GameCommand,
+    map::render::MapRenderer,
+    systems::input::Bindings,
+    texture::sprite::{AtlasMapper, SpriteAtlas},
 };
 
 pub mod state;
-use state::GameState;
 
 /// 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 {
-    state: GameState,
+    pub world: World,
+    pub schedule: Schedule,
 }
 
 impl Game {
-    pub fn new(texture_creator: &'static TextureCreator<WindowContext>) -> GameResult<Game> {
-        let state = GameState::new(texture_creator)?;
+    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();
 
-        Ok(Game { state })
-    }
+        EventRegistry::register_event::<GameError>(&mut world);
+        EventRegistry::register_event::<GameEvent>(&mut world);
+        EventRegistry::register_event::<AudioEvent>(&mut world);
 
-    pub fn keyboard_event(&mut self, keycode: Keycode) {
-        self.state.pacman.handle_key(keycode);
+        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);
 
-        if keycode == Keycode::M {
-            self.state.audio.set_mute(!self.state.audio.is_muted());
-        }
+        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);
 
-        if keycode == Keycode::R {
-            if let Err(e) = self.reset_game_state() {
-                tracing::error!("Failed to reset game state: {}", e);
+        // 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.set_scale_mode(ScaleMode::Nearest);
+
+        // Initialize audio system
+        let audio = crate::audio::Audio::new();
+
+        // 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()))
             }
-        }
-    }
+        })?;
 
-    /// 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)?;
+        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);
 
-        // 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)?;
+        // 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);
         }
 
-        // 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(())
-    }
-
-    pub fn tick(&mut self, dt: f32) {
-        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: RenderTarget>(&mut self, canvas: &mut Canvas<T>, backbuffer: &mut Texture) -> GameResult<()> {
+        // Render map to texture
         canvas
-            .with_texture_canvas(backbuffer, |canvas| {
-                canvas.set_draw_color(Color::BLACK);
-                canvas.clear();
-                self.state
-                    .map
-                    .render(canvas, &mut self.state.atlas, &mut self.state.map_tiles);
-
-                // 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);
-                }
+            .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()))?;
 
-        Ok(())
-    }
+        let map = Map::new(constants::RAW_BOARD)?;
+        let pacman_start_node = map.start_positions.pacman;
 
-    pub fn present_backbuffer<T: RenderTarget>(
-        &mut self,
-        canvas: &mut Canvas<T>,
-        backbuffer: &Texture,
-        cursor_pos: glam::Vec2,
-    ) -> GameResult<()> {
-        canvas
-            .copy(backbuffer, None, None)
-            .map_err(|e| GameError::Sdl(e.to_string()))?;
-        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)?;
+        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)?);
         }
-        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: RenderTarget>(&self, canvas: &mut Canvas<T>) -> GameResult<()> {
-        let pacman_node = self.state.pacman.current_node_id();
+        let player = PlayerBundle {
+            player: PlayerControlled,
+            position: Position {
+                node: pacman_start_node,
+                edge_progress: None,
+            },
+            movement_state: MovementState::Stopped,
+            movable: Movable {
+                speed: 1.15,
+                current_direction: Direction::Left,
+                requested_direction: Some(Direction::Left), // Start moving left immediately
+            },
+            sprite: Renderable {
+                sprite: SpriteAtlas::get_tile(&atlas, "pacman/full.png")
+                    .ok_or_else(|| GameError::Texture(TextureError::AtlasTileNotFound("pacman/full.png".to_string())))?,
+                layer: 0,
+                visible: true,
+            },
+            directional_animated: DirectionalAnimated {
+                textures,
+                stopped_textures,
+            },
+            entity_type: EntityType::Player,
+            collider: Collider {
+                size: constants::CELL_SIZE as f32 * 1.375,
+            },
+            pacman_collider: PacmanCollider,
+        };
 
-        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
+        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(AudioResource(audio));
+
+        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.add_observer(
+            |event: Trigger<GameEvent>, mut state: ResMut<GlobalState>, _score: ResMut<ScoreResource>| {
+                if matches!(*event, GameEvent::Command(GameCommand::Exit)) {
+                    state.exit = true;
                 }
-
-                // 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 => Vec2::new(0.25, 0.5),
-                    GhostType::Pinky => Vec2::new(-0.25, -0.25),
-                    GhostType::Inky => Vec2::new(0.5, -0.5),
-                    GhostType::Clyde => 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(GameError::Entity(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;
+            },
+        );
+        schedule.add_systems(
+            (
+                profile("input", input_system),
+                profile("player", player_system),
+                profile("ghost_ai", ghost_ai_system),
+                profile("movement", movement_system),
+                profile("collision", collision_system),
+                profile("item", item_system),
+                profile("audio", audio_system),
+                profile("blinking", blinking_system),
+                profile("directional_render", directional_render_system),
+                profile("dirty_render", dirty_render_system),
+                profile("render", render_system),
+                profile("debug_render", debug_render_system),
+                profile(
+                    "present",
+                    |mut canvas: NonSendMut<&mut Canvas<Window>>,
+                     backbuffer: NonSendMut<BackbufferResource>,
+                     debug_state: Res<DebugState>,
+                     mut dirty: ResMut<RenderDirty>| {
+                        if dirty.0 || *debug_state != DebugState::Off {
+                            // Only copy backbuffer to main canvas if debug rendering is off
+                            // (debug rendering draws directly to main canvas)
+                            if *debug_state == DebugState::Off {
+                                canvas.copy(&backbuffer.0, None, None).unwrap();
+                            }
+                            dirty.0 = false;
+                            canvas.present();
                         }
+                    },
+                ),
+            )
+                .chain(),
+        );
 
-                        // 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| GameError::Sdl(e.to_string()))?;
-                    }
+        // Spawn player
+        world.spawn(player);
+
+        // Spawn ghosts
+        Self::spawn_ghosts(&mut world)?;
+
+        // Spawn items
+        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())))?;
+
+        let nodes: Vec<_> = world.resource::<Map>().iter_nodes().map(|(id, tile)| (*id, *tile)).collect();
+
+        for (node_id, tile) in nodes {
+            let (item_type, sprite, size) = match tile {
+                crate::constants::MapTile::Pellet => (EntityType::Pellet, pellet_sprite, constants::CELL_SIZE as f32 * 0.4),
+                crate::constants::MapTile::PowerPellet => {
+                    (EntityType::PowerPellet, energizer_sprite, constants::CELL_SIZE as f32 * 0.95)
                 }
+                _ => continue,
+            };
+
+            let mut item = world.spawn(ItemBundle {
+                position: Position {
+                    node: node_id,
+                    edge_progress: None,
+                },
+                sprite: Renderable {
+                    sprite,
+                    layer: 1,
+                    visible: true,
+                },
+                entity_type: item_type,
+                collider: Collider { size },
+                item_collider: ItemCollider,
+            });
+
+            if item_type == EntityType::PowerPellet {
+                item.insert(Blinking {
+                    timer: 0.0,
+                    interval: 0.2,
+                });
             }
         }
 
+        Ok(Game { world, schedule })
+    }
+
+    /// Spawns all four ghosts at their starting positions with appropriate textures.
+    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>();
+            [
+                (GhostType::Blinky, map.start_positions.blinky),
+                (GhostType::Pinky, map.start_positions.pinky),
+                (GhostType::Inky, map.start_positions.inky),
+                (GhostType::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 atlas = world.non_send_resource::<SpriteAtlas>();
+
+                // Create directional animated textures for the ghost
+                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)?);
+                }
+
+                GhostBundle {
+                    ghost_type,
+                    ghost_behavior: GhostBehavior::default(),
+                    position: Position {
+                        node: start_node,
+                        edge_progress: None,
+                    },
+                    movement_state: MovementState::Stopped,
+                    movable: Movable {
+                        speed: ghost_type.base_speed(),
+                        current_direction: Direction::Left,
+                        requested_direction: Some(Direction::Left), // Start with some movement
+                    },
+                    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,
+                        visible: true,
+                    },
+                    directional_animated: DirectionalAnimated {
+                        textures,
+                        stopped_textures,
+                    },
+                    entity_type: EntityType::Ghost,
+                    collider: Collider {
+                        size: crate::constants::CELL_SIZE as f32 * 1.375,
+                    },
+                    ghost_collider: GhostCollider,
+                }
+            };
+
+            world.spawn(ghost);
+        }
+
         Ok(())
     }
 
-    fn draw_hud<T: 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   "),
-            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,
-            UVec2::new(8 * score_offset as u32 + x_offset, 8 + y_offset),
-        ) {
-            tracing::error!("Failed to render score text: {}", e);
-        }
+    /// 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));
 
-        // 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
-        // );
+        // Run all systems
+        self.schedule.run(&mut self.world);
 
-        Ok(())
+        let state = self
+            .world
+            .get_resource::<GlobalState>()
+            .expect("GlobalState could not be acquired");
+
+        state.exit
     }
+
+    // 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

@@ -1,140 +1,153 @@
-use sdl2::{image::LoadTexture, render::TextureCreator, video::WindowContext};
-use smallvec::SmallVec;
+// use std::collections::VecDeque;
 
-use crate::{
-    asset::{get_asset_bytes, Asset},
-    audio::Audio,
-    constants::RAW_BOARD,
-    entity::{
-        collision::{Collidable, CollisionSystem},
-        ghost::{Ghost, GhostType},
-        item::Item,
-        pacman::Pacman,
-    },
-    error::{GameError, GameResult, TextureError},
-    game::EntityId,
-    map::Map,
-    texture::{
-        sprite::{AtlasMapper, AtlasTile, SpriteAtlas},
-        text::TextTexture,
-    },
-};
+// use sdl2::{
+//     image::LoadTexture,
+//     render::{Texture, TextureCreator},
+//     video::WindowContext,
+// };
+// use smallvec::SmallVec;
 
-/// 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 score: u32,
-    pub map: Map,
-    pub map_tiles: Vec<AtlasTile>,
-    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,
+// 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,
+//     },
+// };
 
-    // Collision system
-    pub(crate) collision_system: CollisionSystem,
+// include!(concat!(env!("OUT_DIR"), "/atlas_data.rs"));
 
-    // Rendering resources
-    pub(crate) atlas: SpriteAtlas,
-    pub(crate) text_texture: TextTexture,
+// /// 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,
 
-    // Audio
-    pub audio: Audio,
-}
+//     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>,
 
-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)?;
+//     // Collision system
+//     pub(crate) collision_system: CollisionSystem,
 
-        let pacman_start_node = map.start_positions.pacman;
+//     // Rendering resources
+//     pub(crate) atlas: SpriteAtlas,
+//     pub(crate) text_texture: TextTexture,
 
-        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_json = get_asset_bytes(Asset::AtlasJson)?;
-        let atlas_mapper: AtlasMapper = serde_json::from_slice(&atlas_json)?;
-        let atlas = SpriteAtlas::new(atlas_texture, atlas_mapper);
+//     // Audio
+//     pub audio: Audio,
 
-        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(&atlas, &tile_name)
-                .ok_or(GameError::Texture(TextureError::AtlasTileNotFound(tile_name)))?;
-            map_tiles.push(tile);
-        }
+//     // Map texture pre-rendering
+//     pub(crate) map_texture: Option<Texture<'static>>,
+//     pub(crate) map_rendered: bool,
+//     pub(crate) texture_creator: &'static TextureCreator<WindowContext>,
+// }
 
-        let text_texture = TextTexture::new(1.0);
-        let audio = Audio::new();
-        let pacman = Pacman::new(&map.graph, pacman_start_node, &atlas)?;
+// 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)?;
 
-        // Generate items (pellets and energizers)
-        let items = map.generate_items(&atlas)?;
+//         let start_node = map.start_positions.pacman;
 
-        // Initialize collision system
-        let mut collision_system = CollisionSystem::default();
+//         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()))
+//             }
+//         })?;
 
-        // Register Pac-Man
-        let pacman_id = collision_system.register_entity(pacman.position());
+//         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);
 
-        // Register items
-        let item_ids = items
-            .iter()
-            .map(|item| collision_system.register_entity(item.position()))
-            .collect();
+//         let text_texture = TextTexture::new(1.0);
+//         let audio = Audio::new();
+//         let pacman = Pacman::new(&map.graph, start_node, &atlas)?;
 
-        // 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]>>>()?;
+//         // Generate items (pellets and energizers)
+//         let items = map.generate_items(&atlas)?;
 
-        // Register ghosts
-        let ghost_ids = ghosts
-            .iter()
-            .map(|ghost| collision_system.register_entity(ghost.position()))
-            .collect();
+//         // Initialize collision system
+//         let mut collision_system = CollisionSystem::default();
 
-        Ok(Self {
-            map,
-            atlas,
-            map_tiles,
-            pacman,
-            pacman_id,
-            ghosts,
-            ghost_ids,
-            items,
-            item_ids,
-            text_texture,
-            audio,
-            score: 0,
-            debug_mode: false,
-            collision_system,
-        })
-    }
-}
+//         // 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/lib.rs

@@ -6,8 +6,10 @@ pub mod audio;
 pub mod constants;
 pub mod entity;
 pub mod error;
+pub mod events;
 pub mod game;
 pub mod helpers;
 pub mod map;
 pub mod platform;
+pub mod systems;
 pub mod texture;

src/main.rs

@@ -12,10 +12,12 @@ mod constants;
 
 mod entity;
 mod error;
+mod events;
 mod game;
 mod helpers;
 mod map;
 mod platform;
+mod systems;
 mod texture;
 
 /// The main entry point of the application.

src/map/builder.rs

@@ -1,12 +1,12 @@
 //! Map construction and building functionality.
-
-use crate::constants::{MapTile, BOARD_CELL_SIZE, CELL_SIZE, RAW_BOARD};
+use crate::constants::{MapTile, BOARD_CELL_SIZE, CELL_SIZE};
 use crate::entity::direction::Direction;
-use crate::entity::graph::{EdgePermissions, Graph, Node, NodeId};
-use crate::entity::item::{Item, ItemType};
+use crate::entity::graph::{Graph, Node, TraversalFlags};
 use crate::map::parser::MapTileParser;
 use crate::map::render::MapRenderer;
-use crate::texture::sprite::{AtlasTile, Sprite, SpriteAtlas};
+use crate::systems::movement::NodeId;
+use crate::texture::sprite::SpriteAtlas;
+use bevy_ecs::resource::Resource;
 use glam::{IVec2, Vec2};
 use sdl2::render::{Canvas, RenderTarget};
 use std::collections::{HashMap, VecDeque};
@@ -24,6 +24,7 @@ pub struct NodePositions {
 }
 
 /// The main map structure containing the game board and navigation graph.
+#[derive(Resource)]
 pub struct Map {
     /// The node map for entity movement.
     pub graph: Graph,
@@ -31,6 +32,8 @@ pub struct Map {
     pub grid_to_node: HashMap<IVec2, NodeId>,
     /// A mapping of the starting positions of the entities.
     pub start_positions: NodePositions,
+    /// The raw tile data for the map.
+    tiles: [[MapTile; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize],
 }
 
 impl Map {
@@ -151,53 +154,15 @@ impl Map {
             graph,
             grid_to_node,
             start_positions,
+            tiles: map,
         })
     }
 
-    /// Renders the map to the given canvas.
-    ///
-    /// This function draws the static map texture to the screen at the correct
-    /// position and scale.
-    pub fn render<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, map_tiles: &mut [AtlasTile]) {
-        MapRenderer::render_map(canvas, atlas, map_tiles);
-    }
-
-    /// 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)
+    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)
+        })
     }
 
     /// Renders a debug visualization with cursor-based highlighting.
@@ -300,7 +265,7 @@ 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}")))?;
 
@@ -311,7 +276,7 @@ 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}")))?;
 

src/map/mod.rs

@@ -4,6 +4,3 @@ pub mod builder;
 pub mod layout;
 pub mod parser;
 pub mod render;
-
-// Re-export main types for convenience
-pub use builder::Map;

src/map/render.rs

@@ -19,7 +19,7 @@ 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];

src/platform/desktop.rs

@@ -11,8 +11,12 @@ use crate::platform::Platform;
 pub struct DesktopPlatform;
 
 impl Platform for DesktopPlatform {
-    fn sleep(&self, duration: Duration) {
-        spin_sleep::sleep(duration);
+    fn sleep(&self, duration: Duration, focused: bool) {
+        if focused {
+            spin_sleep::sleep(duration);
+        } else {
+            std::thread::sleep(duration);
+        }
     }
 
     fn get_time(&self) -> f64 {
@@ -72,7 +76,6 @@ impl Platform for DesktopPlatform {
             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::AtlasJson => Ok(Cow::Borrowed(include_bytes!("../../assets/game/atlas.json"))),
         }
     }
 }

src/platform/emscripten.rs

@@ -11,7 +11,7 @@ use crate::platform::Platform;
 pub struct EmscriptenPlatform;
 
 impl Platform for EmscriptenPlatform {
-    fn sleep(&self, duration: Duration) {
+    fn sleep(&self, duration: Duration, _focused: bool) {
         unsafe {
             emscripten_sleep(duration.as_millis() as u32);
         }

src/platform/mod.rs

@@ -11,7 +11,7 @@ pub mod emscripten;
 /// Platform abstraction trait that defines cross-platform functionality.
 pub trait Platform {
     /// Sleep for the specified duration using platform-appropriate method.
-    fn sleep(&self, duration: Duration);
+    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.

src/systems/audio.rs

@@ -0,0 +1,54 @@
+//! 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},
+    system::{NonSendMut, ResMut},
+};
+
+use crate::{audio::Audio, error::GameError, systems::components::AudioState};
+
+/// 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 +1,27 @@
+use bevy_ecs::{
+    component::Component,
+    system::{Query, Res},
+};
+
+use crate::systems::components::{DeltaTime, Renderable};
+
+#[derive(Component)]
+pub struct Blinking {
+    pub timer: f32,
+    pub interval: f32,
+}
+
+/// 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.
+pub fn blinking_system(time: Res<DeltaTime>, mut query: Query<(&mut Blinking, &mut Renderable)>) {
+    for (mut blinking, mut renderable) in query.iter_mut() {
+        blinking.timer += time.0;
+
+        if blinking.timer >= blinking.interval {
+            blinking.timer = 0.0;
+            renderable.visible = !renderable.visible;
+        }
+    }
+}

src/systems/collision.rs

@@ -0,0 +1,48 @@
+use bevy_ecs::entity::Entity;
+use bevy_ecs::event::EventWriter;
+use bevy_ecs::query::With;
+use bevy_ecs::system::{Query, Res};
+
+use crate::error::GameError;
+use crate::events::GameEvent;
+use crate::map::builder::Map;
+use crate::systems::components::{Collider, ItemCollider, PacmanCollider};
+use crate::systems::movement::Position;
+
+pub fn collision_system(
+    map: Res<Map>,
+    pacman_query: Query<(Entity, &Position, &Collider), With<PacmanCollider>>,
+    item_query: Query<(Entity, &Position, &Collider), With<ItemCollider>>,
+    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 (pacman_pos.get_pixel_pos(&map.graph), item_pos.get_pixel_pos(&map.graph)) {
+                (Ok(pacman_pixel), Ok(item_pixel)) => {
+                    // Calculate the distance between the two entities's precise pixel positions
+                    let distance = pacman_pixel.distance(item_pixel);
+                    // Calculate the distance at which the two entities will collide
+                    let collision_distance = (pacman_collider.size + item_collider.size) / 2.0;
+
+                    // If the distance between the two entities is less than the collision distance, then the two entities are colliding
+                    if distance < collision_distance {
+                        events.write(GameEvent::Collision(pacman_entity, item_entity));
+                    }
+                }
+                // Either or both of the pixel positions failed to get, so we need to report the error
+                (result_a, result_b) => {
+                    for result in [result_a, result_b] {
+                        if let Err(e) = result {
+                            errors.write(GameError::InvalidState(format!(
+                                "Collision system failed to get pixel positions for entities {:?} and {:?}: {}",
+                                pacman_entity, item_entity, e
+                            )));
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/systems/components.rs

@@ -0,0 +1,191 @@
+use bevy_ecs::{bundle::Bundle, component::Component, resource::Resource};
+use bitflags::bitflags;
+
+use crate::{
+    entity::graph::TraversalFlags,
+    systems::movement::{Movable, MovementState, Position},
+    texture::{animated::AnimatedTexture, sprite::AtlasTile},
+};
+
+/// A tag component for entities that are controlled by the player.
+#[derive(Default, Component)]
+pub struct PlayerControlled;
+
+/// The four classic ghost types.
+#[derive(Component, 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,
+        }
+    }
+
+    /// Returns the ghost's color for debug rendering.
+    pub fn debug_color(&self) -> sdl2::pixels::Color {
+        match self {
+            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
+        }
+    }
+}
+
+/// Ghost AI behavior component - controls randomized movement decisions.
+#[derive(Component)]
+pub struct GhostBehavior {
+    /// Timer for making new direction decisions
+    pub decision_timer: f32,
+    /// Interval between direction decisions (in seconds)
+    pub decision_interval: f32,
+}
+
+impl Default for GhostBehavior {
+    fn default() -> Self {
+        Self {
+            decision_timer: 0.0,
+            decision_interval: 0.5, // Make decisions every half second
+        }
+    }
+}
+
+/// 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
+        }
+    }
+}
+
+/// 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,
+    pub visible: bool,
+}
+
+/// 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],
+}
+
+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(Component)]
+pub struct Collider {
+    pub size: f32,
+}
+
+/// Marker components for collision filtering optimization
+#[derive(Component)]
+pub struct PacmanCollider;
+
+#[derive(Component)]
+pub struct GhostCollider;
+
+#[derive(Component)]
+pub struct ItemCollider;
+
+#[derive(Bundle)]
+pub struct PlayerBundle {
+    pub player: PlayerControlled,
+    pub position: Position,
+    pub movement_state: MovementState,
+    pub movable: Movable,
+    pub sprite: Renderable,
+    pub directional_animated: DirectionalAnimated,
+    pub entity_type: EntityType,
+    pub collider: Collider,
+    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_type: GhostType,
+    pub ghost_behavior: GhostBehavior,
+    pub position: Position,
+    pub movement_state: MovementState,
+    pub movable: Movable,
+    pub sprite: Renderable,
+    pub directional_animated: DirectionalAnimated,
+    pub entity_type: EntityType,
+    pub collider: Collider,
+    pub ghost_collider: GhostCollider,
+}
+
+#[derive(Resource)]
+pub struct GlobalState {
+    pub exit: bool,
+}
+
+#[derive(Resource)]
+pub struct ScoreResource(pub u32);
+
+#[derive(Resource)]
+pub struct DeltaTime(pub f32);
+
+#[derive(Resource, Default)]
+pub struct RenderDirty(pub bool);
+
+/// 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,
+}

src/systems/control.rs

@@ -0,0 +1,58 @@
+use bevy_ecs::{
+    event::{EventReader, EventWriter},
+    prelude::ResMut,
+    query::With,
+    system::Query,
+};
+
+use crate::{
+    error::GameError,
+    events::{GameCommand, GameEvent},
+    systems::components::{AudioState, GlobalState, PlayerControlled},
+    systems::debug::DebugState,
+    systems::movement::Movable,
+};
+
+// Handles player input and control
+pub fn player_system(
+    mut events: EventReader<GameEvent>,
+    mut state: ResMut<GlobalState>,
+    mut debug_state: ResMut<DebugState>,
+    mut audio_state: ResMut<AudioState>,
+    mut players: Query<&mut Movable, With<PlayerControlled>>,
+    mut errors: EventWriter<GameError>,
+) {
+    // Get the player's movable component (ensuring there is only one player)
+    let mut movable = match players.single_mut() {
+        Ok(movable) => movable,
+        Err(e) => {
+            errors.write(GameError::InvalidState(format!(
+                "No/multiple entities queried for player system: {}",
+                e
+            )));
+            return;
+        }
+    };
+
+    // Handle events
+    for event in events.read() {
+        if let GameEvent::Command(command) = event {
+            match command {
+                GameCommand::MovePlayer(direction) => {
+                    movable.requested_direction = Some(*direction);
+                }
+                GameCommand::Exit => {
+                    state.exit = true;
+                }
+                GameCommand::ToggleDebug => {
+                    *debug_state = debug_state.next();
+                }
+                GameCommand::MuteAudio => {
+                    audio_state.muted = !audio_state.muted;
+                    tracing::info!("Audio {}", if audio_state.muted { "muted" } else { "unmuted" });
+                }
+                _ => {}
+            }
+        }
+    }
+}

src/systems/debug.rs

@@ -0,0 +1,217 @@
+//! Debug rendering system
+use crate::constants::BOARD_PIXEL_OFFSET;
+use crate::map::builder::Map;
+use crate::systems::components::Collider;
+use crate::systems::movement::Position;
+use crate::systems::profiling::SystemTimings;
+use crate::systems::render::BackbufferResource;
+use bevy_ecs::prelude::*;
+use sdl2::pixels::Color;
+use sdl2::rect::Rect;
+use sdl2::render::{Canvas, Texture, TextureCreator};
+use sdl2::video::{Window, WindowContext};
+
+#[derive(Resource, Default, Debug, Copy, Clone, PartialEq)]
+pub enum DebugState {
+    #[default]
+    Off,
+    Graph,
+    Collision,
+}
+
+impl DebugState {
+    pub fn next(&self) -> Self {
+        match self {
+            DebugState::Off => DebugState::Graph,
+            DebugState::Graph => DebugState::Collision,
+            DebugState::Collision => DebugState::Off,
+        }
+    }
+}
+
+/// Resource to hold the debug texture for persistent rendering
+pub struct DebugTextureResource(pub Texture<'static>);
+
+/// Transforms a position from logical canvas coordinates to output canvas coordinates
+fn transform_position(pos: (f32, f32), output_size: (u32, u32), logical_size: (u32, u32)) -> (i32, i32) {
+    let scale_x = output_size.0 as f32 / logical_size.0 as f32;
+    let scale_y = output_size.1 as f32 / logical_size.1 as f32;
+    let scale = scale_x.min(scale_y); // Use the smaller scale to maintain aspect ratio
+
+    let x = (pos.0 * scale) as i32;
+    let y = (pos.1 * scale) as i32;
+    (x, y)
+}
+
+/// Transforms a position from logical canvas coordinates to output canvas coordinates (with board offset)
+fn transform_position_with_offset(pos: (f32, f32), output_size: (u32, u32), logical_size: (u32, u32)) -> (i32, i32) {
+    let scale_x = output_size.0 as f32 / logical_size.0 as f32;
+    let scale_y = output_size.1 as f32 / logical_size.1 as f32;
+    let scale = scale_x.min(scale_y); // Use the smaller scale to maintain aspect ratio
+
+    let x = ((pos.0 + BOARD_PIXEL_OFFSET.x as f32) * scale) as i32;
+    let y = ((pos.1 + BOARD_PIXEL_OFFSET.y as f32) * scale) as i32;
+    (x, y)
+}
+
+/// Transforms a size from logical canvas coordinates to output canvas coordinates
+fn transform_size(size: f32, output_size: (u32, u32), logical_size: (u32, u32)) -> u32 {
+    let scale_x = output_size.0 as f32 / logical_size.0 as f32;
+    let scale_y = output_size.1 as f32 / logical_size.1 as f32;
+    let scale = scale_x.min(scale_y); // Use the smaller scale to maintain aspect ratio
+
+    (size * scale) as u32
+}
+
+/// 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,
+) {
+    // Get TTF context
+    let ttf_context = sdl2::ttf::init().unwrap();
+
+    // Load font
+    let font = ttf_context.load_font("assets/site/TerminalVector.ttf", 12).unwrap();
+
+    // Format timing information using the formatting module
+    let timing_text = timings.format_timing_display();
+
+    // Split text by newlines and render each line separately
+    let lines: Vec<&str> = timing_text.lines().collect();
+    if lines.is_empty() {
+        return;
+    }
+    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
+    if max_width > 0 {
+        let total_height = (lines.len() as u32) * line_height as u32;
+        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();
+    }
+}
+
+pub fn debug_render_system(
+    mut canvas: NonSendMut<&mut Canvas<Window>>,
+    backbuffer: NonSendMut<BackbufferResource>,
+    mut debug_texture: NonSendMut<DebugTextureResource>,
+    debug_state: Res<DebugState>,
+    timings: Res<SystemTimings>,
+    map: Res<Map>,
+    colliders: Query<(&Collider, &Position)>,
+) {
+    if *debug_state == DebugState::Off {
+        return;
+    }
+
+    // Get canvas sizes for coordinate transformation
+    let output_size = canvas.output_size().unwrap();
+    let logical_size = canvas.logical_size();
+
+    // Copy the current backbuffer to the debug texture
+    canvas
+        .with_texture_canvas(&mut debug_texture.0, |debug_canvas| {
+            // Clear the debug canvas
+            debug_canvas.set_draw_color(Color::BLACK);
+            debug_canvas.clear();
+
+            // Copy the backbuffer to the debug canvas
+            debug_canvas.copy(&backbuffer.0, None, None).unwrap();
+        })
+        .unwrap();
+
+    // Get texture creator before entering the closure to avoid borrowing conflicts
+    let mut texture_creator = canvas.texture_creator();
+
+    // Draw debug info on the high-resolution debug texture
+    canvas
+        .with_texture_canvas(&mut debug_texture.0, |debug_canvas| {
+            match *debug_state {
+                DebugState::Graph => {
+                    debug_canvas.set_draw_color(Color::RED);
+                    for (start_node, end_node) in map.graph.edges() {
+                        let start_node = map.graph.get_node(start_node).unwrap().position;
+                        let end_node = map.graph.get_node(end_node.target).unwrap().position;
+
+                        // Transform positions using common method
+                        let (start_x, start_y) =
+                            transform_position_with_offset((start_node.x, start_node.y), output_size, logical_size);
+                        let (end_x, end_y) = transform_position_with_offset((end_node.x, end_node.y), output_size, logical_size);
+
+                        debug_canvas.draw_line((start_x, start_y), (end_x, end_y)).unwrap();
+                    }
+
+                    debug_canvas.set_draw_color(Color::BLUE);
+                    for node in map.graph.nodes() {
+                        let pos = node.position;
+
+                        // Transform position using common method
+                        let (x, y) = transform_position_with_offset((pos.x, pos.y), output_size, logical_size);
+                        let size = transform_size(4.0, output_size, logical_size);
+
+                        debug_canvas
+                            .fill_rect(Rect::new(x - (size as i32 / 2), y - (size as i32 / 2), size, size))
+                            .unwrap();
+                    }
+                }
+                DebugState::Collision => {
+                    debug_canvas.set_draw_color(Color::GREEN);
+                    for (collider, position) in colliders.iter() {
+                        let pos = position.get_pixel_pos(&map.graph).unwrap();
+
+                        // Transform position and size using common methods
+                        let (x, y) = transform_position((pos.x, pos.y), output_size, logical_size);
+                        let size = transform_size(collider.size, output_size, logical_size);
+
+                        // Center the collision box on the entity
+                        let rect = Rect::new(x - (size as i32 / 2), y - (size as i32 / 2), size, size);
+                        debug_canvas.draw_rect(rect).unwrap();
+                    }
+                }
+                _ => {}
+            }
+
+            // Render timing information in the top-left corner
+            render_timing_display(debug_canvas, &mut texture_creator, &timings);
+        })
+        .unwrap();
+
+    // Draw the debug texture directly onto the main canvas at full resolution
+    canvas.copy(&debug_texture.0, None, None).unwrap();
+}

src/systems/formatting.rs

@@ -0,0 +1,102 @@
+use num_width::NumberWidth;
+use smallvec::SmallVec;
+use std::time::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; 12]> {
+    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; 12]>>()
+}

src/systems/ghost.rs

@@ -0,0 +1,77 @@
+use bevy_ecs::system::{Query, Res};
+use rand::prelude::*;
+use smallvec::SmallVec;
+
+use crate::{
+    entity::direction::Direction,
+    map::builder::Map,
+    systems::{
+        components::{DeltaTime, EntityType, GhostBehavior, GhostType},
+        movement::{Movable, Position},
+    },
+};
+
+/// Ghost AI system that handles randomized movement decisions.
+///
+/// This system runs on all ghosts and makes periodic decisions about
+/// which direction to move in when they reach intersections.
+pub fn ghost_ai_system(
+    map: Res<Map>,
+    delta_time: Res<DeltaTime>,
+    mut ghosts: Query<(&mut GhostBehavior, &mut Movable, &Position, &EntityType, &GhostType)>,
+) {
+    for (mut ghost_behavior, mut movable, position, entity_type, _ghost_type) in ghosts.iter_mut() {
+        // Only process ghosts
+        if *entity_type != EntityType::Ghost {
+            continue;
+        }
+
+        // Update decision timer
+        ghost_behavior.decision_timer += delta_time.0;
+
+        // Check if we should make a new direction decision
+        let should_decide = ghost_behavior.decision_timer >= ghost_behavior.decision_interval;
+        let at_intersection = position.is_at_node();
+
+        if should_decide && at_intersection {
+            choose_random_direction(&map, &mut movable, position);
+            ghost_behavior.decision_timer = 0.0;
+        }
+    }
+}
+
+/// Chooses a random available direction for a ghost at an intersection.
+///
+/// This function mirrors the behavior from the old ghost implementation,
+/// preferring not to reverse direction unless it's the only option.
+fn choose_random_direction(map: &Map, movable: &mut Movable, position: &Position) {
+    let current_node = position.current_node();
+    let intersection = &map.graph.adjacency_list[current_node];
+
+    // Collect all available directions that ghosts can traverse
+    let mut available_directions = SmallVec::<[Direction; 4]>::new();
+    for direction in Direction::DIRECTIONS {
+        if let Some(edge) = intersection.get(direction) {
+            // Check if ghosts can traverse this edge
+            if edge.traversal_flags.contains(crate::entity::graph::TraversalFlags::GHOST) {
+                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 = movable.current_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) {
+            movable.requested_direction = Some(*random_direction);
+        }
+    }
+}

src/systems/input.rs

@@ -0,0 +1,57 @@
+use std::collections::HashMap;
+
+use bevy_ecs::{event::EventWriter, prelude::Res, resource::Resource, system::NonSendMut};
+use sdl2::{event::Event, keyboard::Keycode, EventPump};
+
+use crate::{
+    entity::direction::Direction,
+    events::{GameCommand, GameEvent},
+};
+
+#[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 input_system(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 {
+                    writer.write(GameEvent::Command(command));
+                }
+            }
+            _ => {}
+        }
+    }
+}

src/systems/item.rs

@@ -0,0 +1,49 @@
+use bevy_ecs::{event::EventReader, prelude::*, query::With, system::Query};
+
+use crate::{
+    events::GameEvent,
+    systems::{
+        audio::AudioEvent,
+        components::{EntityType, ItemCollider, PacmanCollider, ScoreResource},
+    },
+};
+
+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 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) {
+                match entity_type {
+                    EntityType::Pellet => {
+                        score.0 += 10;
+                    }
+                    EntityType::PowerPellet => {
+                        score.0 += 50;
+                    }
+                    _ => continue,
+                }
+
+                // Remove the collected item
+                commands.entity(item_ent).despawn();
+
+                events.write(AudioEvent::PlayEat);
+            }
+        }
+    }
+}

src/systems/mod.rs

@@ -0,0 +1,18 @@
+//! 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 control;
+pub mod debug;
+pub mod formatting;
+pub mod ghost;
+pub mod input;
+pub mod item;
+pub mod movement;
+pub mod profiling;
+pub mod render;

src/systems/movement.rs

@@ -0,0 +1,266 @@
+use crate::entity::graph::Graph;
+use crate::entity::{direction::Direction, graph::Edge};
+use crate::error::{EntityError, GameError, GameResult};
+use crate::map::builder::Map;
+use crate::systems::components::{DeltaTime, EntityType};
+use bevy_ecs::component::Component;
+use bevy_ecs::event::EventWriter;
+use bevy_ecs::system::{Query, Res};
+use glam::Vec2;
+
+/// A unique identifier for a node, represented by its index in the graph's storage.
+pub type NodeId = usize;
+
+/// Progress along an edge between two nodes.
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct EdgeProgress {
+    pub target_node: NodeId,
+    /// Progress from 0.0 (at source node) to 1.0 (at target node)
+    pub progress: f32,
+}
+
+/// Pure spatial position component - works for both static and dynamic entities.
+#[derive(Component, Debug, Copy, Clone, PartialEq, Default)]
+pub struct Position {
+    /// The current/primary node this entity is at or traveling from
+    pub node: NodeId,
+    /// If Some, entity is traveling between nodes. If None, entity is stationary at node.
+    pub edge_progress: Option<EdgeProgress>,
+}
+
+/// Explicit movement state - only for entities that can move.
+#[derive(Component, Debug, Clone, Copy, PartialEq, Default)]
+pub enum MovementState {
+    #[default]
+    Stopped,
+    Moving {
+        direction: Direction,
+    },
+}
+
+/// Movement capability and parameters - only for entities that can move.
+#[derive(Component, Debug, Clone, Copy)]
+pub struct Movable {
+    pub speed: f32,
+    pub current_direction: Direction,
+    pub requested_direction: Option<Direction>,
+}
+
+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_pos(&self, graph: &Graph) -> GameResult<Vec2> {
+        let pos = match &self.edge_progress {
+            None => {
+                // Entity is stationary at a node
+                let node = graph.get_node(self.node).ok_or(EntityError::NodeNotFound(self.node))?;
+                node.position
+            }
+            Some(edge_progress) => {
+                // Entity is traveling between nodes
+                let from_node = graph.get_node(self.node).ok_or(EntityError::NodeNotFound(self.node))?;
+                let to_node = graph
+                    .get_node(edge_progress.target_node)
+                    .ok_or(EntityError::NodeNotFound(edge_progress.target_node))?;
+
+                // For zero-distance edges (tunnels), progress >= 1.0 means we're at the target
+                if edge_progress.progress >= 1.0 {
+                    to_node.position
+                } else {
+                    // Interpolate position based on progress
+                    from_node.position + (to_node.position - from_node.position) * edge_progress.progress
+                }
+            }
+        };
+
+        Ok(Vec2::new(
+            pos.x + crate::constants::BOARD_PIXEL_OFFSET.x as f32,
+            pos.y + crate::constants::BOARD_PIXEL_OFFSET.y as f32,
+        ))
+    }
+}
+
+#[allow(dead_code)]
+impl Position {
+    /// Returns `true` if the position is exactly at a node (not traveling).
+    pub fn is_at_node(&self) -> bool {
+        self.edge_progress.is_none()
+    }
+
+    /// Returns the `NodeId` of the current node (source of travel if moving).
+    pub fn current_node(&self) -> NodeId {
+        self.node
+    }
+
+    /// Returns the `NodeId` of the destination node, if currently traveling.
+    pub fn target_node(&self) -> Option<NodeId> {
+        self.edge_progress.as_ref().map(|ep| ep.target_node)
+    }
+
+    /// Returns `true` if the entity is traveling between nodes.
+    pub fn is_moving(&self) -> bool {
+        self.edge_progress.is_some()
+    }
+}
+
+fn can_traverse(entity_type: EntityType, edge: Edge) -> bool {
+    let entity_flags = entity_type.traversal_flags();
+    edge.traversal_flags.contains(entity_flags)
+}
+
+pub fn movement_system(
+    map: Res<Map>,
+    delta_time: Res<DeltaTime>,
+    mut entities: Query<(&mut MovementState, &mut Movable, &mut Position, &EntityType)>,
+    mut errors: EventWriter<GameError>,
+) {
+    for (mut movement_state, mut movable, mut position, entity_type) in entities.iter_mut() {
+        let distance = movable.speed * 60.0 * delta_time.0;
+
+        match *movement_state {
+            MovementState::Stopped => {
+                // Check if we have a requested direction to start moving
+                if let Some(requested_direction) = movable.requested_direction {
+                    if let Some(edge) = map.graph.find_edge_in_direction(position.node, requested_direction) {
+                        if can_traverse(*entity_type, edge) {
+                            // Start moving in the requested direction
+                            let progress = if edge.distance > 0.0 {
+                                distance / edge.distance
+                            } else {
+                                // Zero-distance edge (tunnels) - immediately teleport
+                                tracing::debug!("Entity entering tunnel from node {} to node {}", position.node, edge.target);
+                                1.0
+                            };
+
+                            position.edge_progress = Some(EdgeProgress {
+                                target_node: edge.target,
+                                progress,
+                            });
+                            movable.current_direction = requested_direction;
+                            movable.requested_direction = None;
+                            *movement_state = MovementState::Moving {
+                                direction: requested_direction,
+                            };
+                        }
+                    } else {
+                        errors.write(
+                            EntityError::InvalidMovement(format!(
+                                "No edge found in direction {:?} from node {}",
+                                requested_direction, position.node
+                            ))
+                            .into(),
+                        );
+                    }
+                }
+            }
+            MovementState::Moving { direction } => {
+                // Continue moving or handle node transitions
+                let current_node = position.node;
+                if let Some(edge_progress) = &mut position.edge_progress {
+                    // Extract target node before mutable operations
+                    let target_node = edge_progress.target_node;
+
+                    // Get the current edge for distance calculation
+                    let edge = map.graph.find_edge(current_node, target_node);
+
+                    if let Some(edge) = edge {
+                        // Update progress along the edge
+                        if edge.distance > 0.0 {
+                            edge_progress.progress += distance / edge.distance;
+                        } else {
+                            // Zero-distance edge (tunnels) - immediately complete
+                            edge_progress.progress = 1.0;
+                        }
+
+                        if edge_progress.progress >= 1.0 {
+                            // Reached the target node
+                            let overflow = if edge.distance > 0.0 {
+                                (edge_progress.progress - 1.0) * edge.distance
+                            } else {
+                                // Zero-distance edge - use remaining distance for overflow
+                                distance
+                            };
+                            position.node = target_node;
+                            position.edge_progress = None;
+
+                            let mut continued_moving = false;
+
+                            // Try to use requested direction first
+                            if let Some(requested_direction) = movable.requested_direction {
+                                if let Some(next_edge) = map.graph.find_edge_in_direction(position.node, requested_direction) {
+                                    if can_traverse(*entity_type, next_edge) {
+                                        let next_progress = if next_edge.distance > 0.0 {
+                                            overflow / next_edge.distance
+                                        } else {
+                                            // Zero-distance edge - immediately complete
+                                            1.0
+                                        };
+
+                                        position.edge_progress = Some(EdgeProgress {
+                                            target_node: next_edge.target,
+                                            progress: next_progress,
+                                        });
+                                        movable.current_direction = requested_direction;
+                                        movable.requested_direction = None;
+                                        *movement_state = MovementState::Moving {
+                                            direction: requested_direction,
+                                        };
+                                        continued_moving = true;
+                                    }
+                                }
+                            }
+
+                            // If no requested direction or it failed, try to continue in current direction
+                            if !continued_moving {
+                                if let Some(next_edge) = map.graph.find_edge_in_direction(position.node, direction) {
+                                    if can_traverse(*entity_type, next_edge) {
+                                        let next_progress = if next_edge.distance > 0.0 {
+                                            overflow / next_edge.distance
+                                        } else {
+                                            // Zero-distance edge - immediately complete
+                                            1.0
+                                        };
+
+                                        position.edge_progress = Some(EdgeProgress {
+                                            target_node: next_edge.target,
+                                            progress: next_progress,
+                                        });
+                                        // Keep current direction and movement state
+                                        continued_moving = true;
+                                    }
+                                }
+                            }
+
+                            // If we couldn't continue moving, stop
+                            if !continued_moving {
+                                *movement_state = MovementState::Stopped;
+                                movable.requested_direction = None;
+                            }
+                        }
+                    } else {
+                        // Edge not found - this is an inconsistent state
+                        errors.write(
+                            EntityError::InvalidMovement(format!(
+                                "Inconsistent state: Moving on non-existent edge from {} to {}",
+                                current_node, target_node
+                            ))
+                            .into(),
+                        );
+                        *movement_state = MovementState::Stopped;
+                        position.edge_progress = None;
+                    }
+                } else {
+                    // Movement state says moving but no edge progress - this shouldn't happen
+                    errors.write(EntityError::InvalidMovement("Entity in Moving state but no edge progress".to_string()).into());
+                    *movement_state = MovementState::Stopped;
+                }
+            }
+        }
+    }
+}

src/systems/profiling.rs

@@ -0,0 +1,153 @@
+use bevy_ecs::prelude::Resource;
+use bevy_ecs::system::{IntoSystem, System};
+use circular_buffer::CircularBuffer;
+use micromap::Map;
+use parking_lot::{Mutex, RwLock};
+use std::time::Duration;
+use thousands::Separable;
+
+/// The maximum number of systems that can be profiled. Must not be exceeded, or it will panic.
+const MAX_SYSTEMS: usize = 13;
+/// The number of durations to keep in the circular buffer.
+const TIMING_WINDOW_SIZE: usize = 30;
+
+#[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<&'static str, Mutex<CircularBuffer<TIMING_WINDOW_SIZE, Duration>>, MAX_SYSTEMS>>,
+}
+
+impl SystemTimings {
+    pub fn add_timing(&self, name: &'static str, 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(name) {
+            let queue = timings
+                .get(name)
+                .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(name).or_insert_with(|| Mutex::new(CircularBuffer::new()));
+            queue.lock().push_back(duration);
+        });
+    }
+
+    pub fn get_stats(&self) -> Map<&'static str, (Duration, Duration), MAX_SYSTEMS> {
+        let timings = self.timings.read();
+        let mut stats = Map::new();
+
+        for (name, 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(
+                *name,
+                (
+                    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 timings = self.timings.read();
+        let mut all_durations = Vec::new();
+
+        for queue in timings.values() {
+            all_durations.extend(queue.lock().iter().map(|d| d.as_secs_f64() * 1000.0));
+        }
+
+        if all_durations.is_empty() {
+            return (Duration::ZERO, Duration::ZERO);
+        }
+
+        let count = all_durations.len() as f64;
+        let sum: f64 = all_durations.iter().sum();
+        let mean = sum / count;
+
+        let variance = all_durations.iter().map(|x| (x - mean).powi(2)).sum::<f64>() / count;
+        let std_dev = variance.sqrt();
+
+        (
+            Duration::from_secs_f64(mean / 1000.0),
+            Duration::from_secs_f64(std_dev / 1000.0),
+        )
+    }
+
+    pub fn format_timing_display(&self) -> String {
+        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::new();
+
+        // Add total stats
+        timing_data.push((effective_fps, total_avg, total_std));
+
+        // Add top 5 most expensive systems
+        let mut sorted_stats: Vec<_> = stats.iter().collect();
+        sorted_stats.sort_by(|a, b| b.1 .0.cmp(&a.1 .0));
+
+        for (name, (avg, std_dev)) in sorted_stats.iter().take(5) {
+            timing_data.push((name.to_string(), *avg, *std_dev));
+        }
+
+        // Use the formatting module to format the data
+        crate::systems::formatting::format_timing_display(timing_data).join("\n")
+    }
+}
+
+pub fn profile<S, M>(name: &'static str, 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(name, duration);
+        }
+    }
+}

src/systems/render.rs

@@ -0,0 +1,121 @@
+use crate::error::{GameError, TextureError};
+use crate::map::builder::Map;
+use crate::systems::components::{DeltaTime, DirectionalAnimated, RenderDirty, Renderable};
+use crate::systems::movement::{Movable, MovementState, Position};
+use crate::texture::sprite::SpriteAtlas;
+use bevy_ecs::entity::Entity;
+use bevy_ecs::event::EventWriter;
+use bevy_ecs::prelude::{Changed, Or, RemovedComponents};
+use bevy_ecs::system::{NonSendMut, Query, Res, ResMut};
+use sdl2::render::{Canvas, Texture};
+use sdl2::video::Window;
+
+#[allow(clippy::type_complexity)]
+pub fn dirty_render_system(
+    mut dirty: ResMut<RenderDirty>,
+    changed_renderables: Query<(), Or<(Changed<Renderable>, Changed<Position>)>>,
+    removed_renderables: RemovedComponents<Renderable>,
+) {
+    if !changed_renderables.is_empty() || !removed_renderables.is_empty() {
+        dirty.0 = true;
+    }
+}
+
+/// Updates the directional animated texture of an entity.
+///
+/// This runs before the render system so it can update the sprite based on the current direction of travel, as well as whether the entity is moving.
+pub fn directional_render_system(
+    dt: Res<DeltaTime>,
+    mut renderables: Query<(&MovementState, &Movable, &mut DirectionalAnimated, &mut Renderable)>,
+    mut errors: EventWriter<GameError>,
+) {
+    for (movement_state, movable, mut texture, mut renderable) in renderables.iter_mut() {
+        let stopped = matches!(movement_state, MovementState::Stopped);
+        let current_direction = movable.current_direction;
+
+        let texture = if stopped {
+            texture.stopped_textures[current_direction.as_usize()].as_mut()
+        } else {
+            texture.textures[current_direction.as_usize()].as_mut()
+        };
+
+        if let Some(texture) = texture {
+            if !stopped {
+                texture.tick(dt.0);
+            }
+            let new_tile = *texture.current_tile();
+            if renderable.sprite != new_tile {
+                renderable.sprite = new_tile;
+            }
+        } else {
+            errors.write(TextureError::RenderFailed("Entity has no texture".to_string()).into());
+            continue;
+        }
+    }
+}
+
+/// 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>);
+
+#[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)>,
+    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()
+            {
+                if !renderable.visible {
+                    continue;
+                }
+
+                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);
+                    }
+                }
+            }
+        })
+        .err()
+        .map(|e| errors.write(TextureError::RenderFailed(e.to_string()).into()));
+}

src/texture/animated.rs

@@ -1,8 +1,5 @@
-use sdl2::rect::Rect;
-use sdl2::render::{Canvas, RenderTarget};
-
 use crate::error::{AnimatedTextureError, GameError, GameResult, TextureError};
-use crate::texture::sprite::{AtlasTile, SpriteAtlas};
+use crate::texture::sprite::AtlasTile;
 
 #[derive(Debug, Clone)]
 pub struct AnimatedTexture {
@@ -40,12 +37,6 @@ impl AnimatedTexture {
         &self.tiles[self.current_frame]
     }
 
-    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 {

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

@@ -8,33 +8,6 @@ use std::collections::HashMap;
 
 use crate::error::TextureError;
 
-/// A simple sprite for stationary items like pellets and energizers.
-#[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 {
     pub frames: HashMap<String, MapperFrame>,
@@ -48,7 +21,7 @@ pub struct MapperFrame {
     pub height: u16,
 }
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 pub struct AtlasTile {
     pub pos: U16Vec2,
     pub size: U16Vec2,
@@ -57,7 +30,7 @@ pub struct AtlasTile {
 
 impl AtlasTile {
     pub fn render<C: RenderTarget>(
-        &mut self,
+        &self,
         canvas: &mut Canvas<C>,
         atlas: &mut SpriteAtlas,
         dest: Rect,
@@ -68,7 +41,7 @@ impl AtlasTile {
     }
 
     pub fn render_with_color<C: RenderTarget>(
-        &mut self,
+        &self,
         canvas: &mut Canvas<C>,
         atlas: &mut SpriteAtlas,
         dest: Rect,

src/texture/text.rs

@@ -103,9 +103,9 @@ 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) {
@@ -113,7 +113,7 @@ 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)
         }

tests/collision.rs

@@ -1,119 +0,0 @@
-use pacman::entity::collision::{Collidable, CollisionSystem};
-use pacman::entity::traversal::Position;
-
-struct MockCollidable {
-    pos: Position,
-}
-
-impl Collidable for MockCollidable {
-    fn position(&self) -> Position {
-        self.pos
-    }
-}
-
-#[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,
-        },
-    };
-
-    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]
-fn test_collision_system_register_and_query() {
-    let mut collision_system = CollisionSystem::default();
-
-    let pos1 = Position::AtNode(1);
-    let entity1 = collision_system.register_entity(pos1);
-
-    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]
-fn test_collision_system_update() {
-    let mut collision_system = CollisionSystem::default();
-
-    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]);
-}
-
-#[test]
-fn test_collision_system_remove() {
-    let mut collision_system = CollisionSystem::default();
-
-    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]);
-}

tests/common/mod.rs

@@ -2,7 +2,8 @@
 
 use pacman::{
     asset::{get_asset_bytes, Asset},
-    texture::sprite::SpriteAtlas,
+    game::ATLAS_FRAMES,
+    texture::sprite::{AtlasMapper, SpriteAtlas},
 };
 use sdl2::{
     image::LoadTexture,
@@ -28,12 +29,13 @@ 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_json = get_asset_bytes(Asset::AtlasJson).unwrap();
 
     let texture = texture_creator.load_texture_bytes(&atlas_bytes).unwrap();
     let texture: Texture<'static> = unsafe { std::mem::transmute(texture) };
 
-    let mapper: pacman::texture::sprite::AtlasMapper = serde_json::from_slice(&atlas_json).unwrap();
+    let atlas_mapper = AtlasMapper {
+        frames: ATLAS_FRAMES.into_iter().map(|(k, v)| (k.to_string(), *v)).collect(),
+    };
 
-    SpriteAtlas::new(texture, mapper)
+    SpriteAtlas::new(texture, atlas_mapper)
 }

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/formatting.rs

@@ -0,0 +1,95 @@
+use pacman::systems::formatting::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_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
+    );
+}

tests/game.rs

@@ -1,7 +1,6 @@
 use pacman::constants::RAW_BOARD;
-use pacman::map::Map;
+use pacman::map::builder::Map;
 
-mod collision;
 mod item;
 
 #[test]

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::entity::graph::{Graph, Node, TraversalFlags};
 
 fn create_test_graph() -> Graph {
     let mut graph = Graph::new();
@@ -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]
@@ -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/item.rs

@@ -1,53 +1,46 @@
-use glam::U16Vec2;
-use pacman::{
-    entity::{
-        collision::Collidable,
-        item::{FruitKind, Item, ItemType},
-    },
-    texture::sprite::{AtlasTile, Sprite},
-};
-use strum::{EnumCount, IntoEnumIterator};
+// use glam::U16Vec2;
+// use pacman::texture::sprite::{AtlasTile, Sprite};
 
-#[test]
-fn test_item_type_get_score() {
-    assert_eq!(ItemType::Pellet.get_score(), 10);
-    assert_eq!(ItemType::Energizer.get_score(), 50);
+// #[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);
-}
+//     let fruit = ItemType::Fruit { kind: FruitKind::Apple };
+//     assert_eq!(fruit.get_score(), 100);
+// }
 
-#[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);
+// #[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);
 
-    assert_eq!(kinds.len(), FruitKind::COUNT);
+//     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:?}");
-    }
-}
+//     // 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:?}");
+//     }
+// }
 
-#[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);
+// #[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);
 
-    assert!(!item.is_collected());
-    assert_eq!(item.get_score(), 10);
-    assert_eq!(item.position().from_node_id(), 0);
+//     assert!(!item.is_collected());
+//     assert_eq!(item.get_score(), 10);
+//     assert_eq!(item.position().from_node_id(), 0);
 
-    item.collect();
-    assert!(item.is_collected());
-}
+//     item.collect();
+//     assert!(item.is_collected());
+// }

tests/map_builder.rs

@@ -1,7 +1,6 @@
 use glam::Vec2;
 use pacman::constants::{CELL_SIZE, RAW_BOARD};
-use pacman::map::Map;
-use sdl2::render::Texture;
+use pacman::map::builder::Map;
 
 #[test]
 fn test_map_creation() {
@@ -34,60 +33,60 @@ fn test_map_node_positions() {
     }
 }
 
-#[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/pacman.rs

@@ -1,107 +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 sdl2::keyboard::Keycode;
-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);
-}
-
-#[test]
-fn test_pacman_key_handling() {
-    let graph = create_test_graph();
-    let atlas = create_test_atlas();
-    let mut pacman = Pacman::new(&graph, 0, &atlas).unwrap();
-
-    let test_cases = [
-        (Keycode::Up, Direction::Up),
-        (Keycode::Down, Direction::Down),
-        (Keycode::Left, Direction::Left),
-        (Keycode::Right, Direction::Right),
-    ];
-
-    for (key, expected_direction) in test_cases {
-        pacman.handle_key(key);
-        assert!(pacman.traverser.next_direction.is_some() || pacman.traverser.direction == expected_direction);
-    }
-}
-
-#[test]
-fn test_pacman_invalid_key() {
-    let graph = create_test_graph();
-    let atlas = create_test_atlas();
-    let mut pacman = Pacman::new(&graph, 0, &atlas).unwrap();
-
-    let original_direction = pacman.traverser.direction;
-    let original_next_direction = pacman.traverser.next_direction;
-
-    pacman.handle_key(Keycode::Space);
-    assert_eq!(pacman.traverser.direction, original_direction);
-    assert_eq!(pacman.traverser.next_direction, original_next_direction);
-}

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/profiling.rs

@@ -0,0 +1,40 @@
+use pacman::systems::profiling::SystemTimings;
+use std::time::Duration;
+
+#[test]
+fn test_timing_statistics() {
+    let timings = SystemTimings::default();
+
+    // Add some test data
+    timings.add_timing("test_system", Duration::from_millis(10));
+    timings.add_timing("test_system", Duration::from_millis(12));
+    timings.add_timing("test_system", Duration::from_millis(8));
+
+    let stats = timings.get_stats();
+    let (avg, std_dev) = stats.get("test_system").unwrap();
+
+    // Average should be 10ms, standard deviation should be small
+    assert!((avg.as_millis() as f64 - 10.0).abs() < 1.0);
+    assert!(std_dev.as_millis() > 0);
+
+    let (total_avg, total_std) = timings.get_total_stats();
+    assert!((total_avg.as_millis() as f64 - 10.0).abs() < 1.0);
+    assert!(total_std.as_millis() > 0);
+}
+
+// #[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;
 
@@ -92,12 +92,3 @@ 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);
-}