feat: add cursor-based node highlighting for debug

- Moved game logic from `game.rs` to `game/mod.rs` and `game/state.rs` for better organization.
- Updated `App` to utilize the new `Game` struct and its state management.
- Refactored error handling
- Removed unused audio subsystem references

.config/nextest.toml

@@ -1,2 +1,5 @@
 [profile.default]
 fail-fast = false
+
+[profile.coverage]
+status-level = "none"

.github/workflows/coverage.yaml

@@ -42,15 +42,39 @@ jobs:
 
       - uses: taiki-e/install-action@cargo-llvm-cov
       - uses: taiki-e/install-action@nextest
+      - uses: taiki-e/install-action@just
 
-      # Note: We manually link zlib. This should be synchronized with the flags set for Linux in .cargo/config.toml.
       - name: Generate coverage report
         run: |
-          cargo llvm-cov --no-fail-fast --lcov --output-path lcov.info nextest
+          just coverage
+
+      - name: Download Coveralls CLI
+        run: |
+          # use GitHub Releases URL instead of coveralls.io because they can't maintain their own files; it 404s
+          curl -L https://github.com/coverallsapp/coverage-reporter/releases/download/v0.6.15/coveralls-linux-x86_64.tar.gz | tar -xz -C /usr/local/bin
 
       - name: Upload coverage to Coveralls
-        uses: coverallsapp/github-action@v2
-        with:
-          files: ./lcov.info
-          format: lcov
-          allow-empty: false
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+        run: |
+          if [ ! -f "lcov.info" ]; then
+            echo "Error: lcov.info file not found. Coverage generation may have failed."
+            exit 1
+          fi
+
+          for i in {1..10}; do
+            echo "Attempt $i: Uploading coverage to Coveralls..."
+            if coveralls -n report lcov.info; then
+              echo "Successfully uploaded coverage report."
+              exit 0
+            fi
+
+            if [ $i -lt 10 ]; then
+              delay=$((2**i))
+              echo "Attempt $i failed. Retrying in $delay seconds..."
+              sleep $delay
+            fi
+          done
+
+          echo "Failed to upload coverage report after 10 attempts."
+          exit 1

.gitignore

@@ -1,8 +1,17 @@
+# IDE, Other files
+.vscode
+.idea
+rust-sdl2-emscripten/
+
+# Build files
 target/
 dist/
 emsdk/
-.idea
-rust-sdl2-emscripten/
-assets/site/build.css
+
+# Site build f iles
 tailwindcss-*
+assets/site/build.css
+
+# Coverage reports
 lcov.info
+coverage.html

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"] }

Justfile

@@ -0,0 +1,33 @@
+set shell := ["bash", "-c"]
+set windows-shell := ["powershell.exe", "-NoLogo", "-Command"]
+
+# Regex to exclude files from coverage report, double escapes for Justfile + CLI
+# You can use src\\\\..., but the filename alone is acceptable too
+coverage_exclude_pattern := "src\\\\app.rs|audio.rs|src\\\\error.rs|platform\\\\emscripten.rs"
+
+# !!! --ignore-filename-regex should be used on both reports & coverage testing
+# !!! --remap-path-prefix prevents the absolute path from being used in the generated report
+
+# Generate HTML report (for humans, source line inspection)
+html: coverage
+    cargo llvm-cov report \
+    --remap-path-prefix \
+    --ignore-filename-regex "{{ coverage_exclude_pattern }}" \
+    --html \
+    --open
+
+# Display report (for humans)
+report-coverage: coverage
+    cargo llvm-cov report \
+    --remap-path-prefix \
+    --ignore-filename-regex "{{ coverage_exclude_pattern }}"
+
+# Run & generate report (for CI)
+coverage:
+    cargo llvm-cov \
+    --lcov \
+    --remap-path-prefix \
+    --ignore-filename-regex "{{ coverage_exclude_pattern }}" \
+    --output-path lcov.info \
+    --profile coverage \
+    --no-fail-fast nextest

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

bacon.toml

@@ -34,6 +34,30 @@ command = [
 need_stdout = true
 analyzer = "nextest"
 
+[jobs.coverage]
+command = [
+    "just", "report-coverage"
+]
+need_stdout = true
+ignored_lines = [
+    "info:",
+    "\\s+Compiling",
+    "test result: ok",
+    "^\\s*$",
+    "running \\d+ test",
+    "Nextest run ID",
+    "[─]+",
+    "test.+ok",
+    "PASS|START",
+    "Starting \\d+ test",
+    "\\s*#",
+    "\\s*Finished.+in \\d+",
+    "\\s*Summary\\s+\\[",
+    "\\s*Blocking",
+    "Finished report saved to"
+]
+on_change_strategy = "wait_then_restart"
+
 [jobs.doc]
 command = ["cargo", "doc", "--no-deps"]
 need_stdout = false
@@ -59,3 +83,4 @@ c = "job:clippy"
 alt-c = "job:check"
 ctrl-alt-c = "job:check-all"
 shift-c = "job:clippy-all"
+f = "job:coverage"

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

@@ -1,12 +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::video::{Window, WindowContext};
-use sdl2::EventPump;
-use tracing::{error, event};
+use sdl2::render::TextureCreator;
+use sdl2::ttf::Sdl2TtfContext;
+use sdl2::video::WindowContext;
+use sdl2::{AudioSubsystem, EventPump, Sdl, VideoSubsystem};
 
 use crate::error::{GameError, GameResult};
 
@@ -14,26 +12,28 @@ use crate::constants::{CANVAS_SIZE, LOOP_TIME, SCALE};
 use crate::game::Game;
 use crate::platform::get_platform;
 
-pub struct App<'a> {
-    game: Game,
-    canvas: Canvas<Window>,
-    event_pump: EventPump,
-    backbuffer: Texture<'a>,
-    paused: bool,
+pub struct App {
+    pub game: Game,
     last_tick: Instant,
-    cursor_pos: Vec2,
+    focused: bool,
+    _cursor_pos: Vec2,
 }
 
-impl App<'_> {
+impl App {
     pub fn new() -> GameResult<Self> {
+        let sdl_context: &'static Sdl = Box::leak(Box::new(sdl2::init().map_err(|e| GameError::Sdl(e.to_string()))?));
+        let video_subsystem: &'static VideoSubsystem =
+            Box::leak(Box::new(sdl_context.video().map_err(|e| GameError::Sdl(e.to_string()))?));
+        let _audio_subsystem: &'static AudioSubsystem =
+            Box::leak(Box::new(sdl_context.audio().map_err(|e| GameError::Sdl(e.to_string()))?));
+        let _ttf_context: &'static Sdl2TtfContext =
+            Box::leak(Box::new(sdl2::ttf::init().map_err(|e| GameError::Sdl(e.to_string()))?));
+        let event_pump: &'static mut EventPump =
+            Box::leak(Box::new(sdl_context.event_pump().map_err(|e| GameError::Sdl(e.to_string()))?));
+
         // Initialize platform-specific console
         get_platform().init_console()?;
 
-        let sdl_context = sdl2::init().map_err(|e| GameError::Sdl(e.to_string()))?;
-        let video_subsystem = sdl_context.video().map_err(|e| GameError::Sdl(e.to_string()))?;
-        let audio_subsystem = sdl_context.audio().map_err(|e| GameError::Sdl(e.to_string()))?;
-        let ttf_context = sdl2::ttf::init().map_err(|e| GameError::Sdl(e.to_string()))?;
-
         let window = video_subsystem
             .window(
                 "Pac-Man",
@@ -45,37 +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: &'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_static, &ttf_context, &audio_subsystem)?;
-        game.audio.set_mute(cfg!(debug_assertions));
+        let game = Game::new(canvas, texture_creator, event_pump)?;
+        // game.audio.set_mute(cfg!(debug_assertions));
 
-        let mut backbuffer = texture_creator_static
-            .create_texture_target(None, CANVAS_SIZE.x, CANVAS_SIZE.y)
-            .map_err(|e| GameError::Sdl(e.to_string()))?;
-        backbuffer.set_scale_mode(ScaleMode::Nearest);
-
-        let event_pump = sdl_context.event_pump().map_err(|e| GameError::Sdl(e.to_string()))?;
-
-        // 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,
         })
     }
 
@@ -83,78 +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.debug_mode = !self.game.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

@@ -3,28 +3,15 @@
 //! On desktop, assets are embedded using include_bytes!; on Emscripten, assets are loaded from the filesystem.
 
 use std::borrow::Cow;
-use std::io;
-use thiserror::Error;
+use strum_macros::EnumIter;
 
-#[derive(Error, Debug)]
-pub enum AssetError {
-    #[error("IO error: {0}")]
-    Io(#[from] io::Error),
-    #[error("Asset not found: {0}")]
-    NotFound(String),
-    #[error("Invalid asset format: {0}")]
-    InvalidFormat(String),
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, EnumIter)]
 pub enum Asset {
     Wav1,
     Wav2,
     Wav3,
     Wav4,
     Atlas,
-    AtlasJson,
-    // Add more as needed
 }
 
 impl Asset {
@@ -37,15 +24,16 @@ impl Asset {
             Wav3 => "sound/waka/3.ogg",
             Wav4 => "sound/waka/4.ogg",
             Atlas => "atlas.png",
-            AtlasJson => "atlas.json",
         }
     }
 }
 
 mod imp {
     use super::*;
+    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/constants.rs

@@ -18,8 +18,6 @@ pub const SCALE: f32 = 2.6;
 pub const BOARD_CELL_OFFSET: UVec2 = UVec2::new(0, 3);
 /// The offset of the game board from the top-left corner of the window, in pixels.
 pub const BOARD_PIXEL_OFFSET: UVec2 = UVec2::new(BOARD_CELL_OFFSET.x * CELL_SIZE, BOARD_CELL_OFFSET.y * CELL_SIZE);
-/// The size of the game board, in pixels.
-pub const BOARD_PIXEL_SIZE: UVec2 = UVec2::new(BOARD_CELL_SIZE.x * CELL_SIZE, BOARD_CELL_SIZE.y * CELL_SIZE);
 /// The size of the canvas, in pixels.
 pub const CANVAS_SIZE: UVec2 = UVec2::new(
     (BOARD_CELL_SIZE.x + BOARD_CELL_OFFSET.x) * CELL_SIZE,

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::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<usize, 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: usize) -> &[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<[usize; 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

@@ -1,256 +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).map_err(|e| GameError::Texture(TextureError::Animated(e)))?);
-            stopped_textures[direction.as_usize()] =
-                Some(AnimatedTexture::new(stopped_tiles, 0.1).map_err(|e| GameError::Texture(TextureError::Animated(e)))?);
-        }
+//             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.
+bitflags! {
+    /// Defines who can traverse a given edge using flags for fast checking.
     #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
-pub enum EdgePermissions {
-    /// Anyone can use this edge.
-    #[default]
-    All,
-    /// Only ghosts can use this edge.
-    GhostsOnly,
+    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() {
@@ -192,14 +195,15 @@ impl Graph {
 
         // Check if the edge already exists in this direction or to the same target
         if let Some(err) = adjacency_list.edges().find_map(|e| {
+            if !replace {
                 // If we're not replacing the edge, we don't want to replace an edge that already exists in this direction
-            if !replace && e.direction == direction {
-                Some(Err("Edge already exists in this direction."))
+                if e.direction == direction {
+                    return Some(Err("Edge already exists in this direction."));
                 } else if e.target == to {
-                Some(Err("Edge already exists."))
-            } else {
-                None
+                    return Some(Err("Edge already exists."));
                 }
+            }
+            None
         }) {
             return err;
         }
@@ -219,6 +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

@@ -1,115 +1,117 @@
-use crate::{
-    constants,
-    entity::{collision::Collidable, graph::Graph},
-    error::EntityError,
-    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) -> anyhow::Result<()> {
-        if !self.collected {
-            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)
-        } else {
-            Ok(())
-        }
-    }
-}
+//     pub fn render<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, graph: &Graph) -> GameResult<()> {
+//         if self.collected {
+//             return Ok(());
+//         }
 
-impl Collidable for Item {
-    fn position(&self) -> crate::entity::traversal::Position {
-        crate::entity::traversal::Position::AtNode(self.node_index)
-    }
-}
+//         let node = graph
+//             .get_node(self.node_index)
+//             .ok_or(EntityError::NodeNotFound(self.node_index))?;
+//         let position = node.position + constants::BOARD_PIXEL_OFFSET.as_vec2();
+
+//         self.sprite.render(canvas, atlas, position)?;
+//         Ok(())
+//     }
+// }
+
+// impl Collidable for Item {
+//     fn position(&self) -> crate::entity::traversal::Position {
+//         crate::entity::traversal::Position::AtNode(self.node_index)
+//     }
+// }

src/entity/mod.rs

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