ci: add audit, test & coverage workflows

.github/workflows/audit.yaml

@@ -0,0 +1,27 @@
+name: Audit
+
+on: ["push", "pull_request"]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUST_TOOLCHAIN: 1.86.0
+
+jobs:
+  audit:
+    name: Audit
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.RUST_TOOLCHAIN }}
+
+      - name: Install cargo-audit
+        run: cargo install cargo-audit
+
+      - name: Run security audit
+        run: cargo audit

.github/workflows/build.yaml

@@ -1,6 +1,6 @@
 name: Build
 
-on: [push]
+on: ["push", "pull_request"]
 
 permissions:
   contents: write

.github/workflows/coverage.yaml

@@ -0,0 +1,53 @@
+name: Coverage
+
+on: ["push", "pull_request"]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUST_TOOLCHAIN: 1.86.0
+
+jobs:
+  coverage:
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.RUST_TOOLCHAIN }}
+
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Cache vcpkg
+        uses: actions/cache@v4
+        with:
+          path: target/vcpkg
+          key: A-vcpkg-${{ runner.os }}-${{ hashFiles('Cargo.toml', 'Cargo.lock') }}
+          restore-keys: |
+            A-vcpkg-${{ runner.os }}-
+
+      - name: Vcpkg Linux Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libltdl-dev
+
+      - name: Vcpkg
+        run: |
+          cargo install cargo-vcpkg
+          cargo vcpkg -v build
+
+      - name: Install cargo-tarpaulin
+        run: cargo install cargo-tarpaulin
+
+      - name: Generate coverage report
+        run: cargo tarpaulin --out Html --output-dir coverage
+
+      - name: Upload coverage to Coveralls
+        uses: coverallsapp/github-action@v2
+        with:
+          files: ./coverage/tarpaulin-report.html
+          allow-empty: false

.github/workflows/test.yaml

@@ -0,0 +1,51 @@
+name: Test
+
+on: ["push", "pull_request"]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUST_TOOLCHAIN: 1.86.0
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.RUST_TOOLCHAIN }}
+
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Cache vcpkg
+        uses: actions/cache@v4
+        with:
+          path: target/vcpkg
+          key: A-vcpkg-${{ runner.os }}-${{ hashFiles('Cargo.toml', 'Cargo.lock') }}
+          restore-keys: |
+            A-vcpkg-${{ runner.os }}-
+
+      - name: Vcpkg Linux Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libltdl-dev
+
+      - name: Vcpkg
+        run: |
+          cargo install cargo-vcpkg
+          cargo vcpkg -v build
+
+      - name: Run tests
+        run: cargo test --workspace --verbose
+
+      - name: Run clippy
+        run: cargo clippy -- -D warnings
+
+      - name: Check formatting
+        run: cargo fmt -- --check

src/entity/graph.rs

@@ -1,7 +1,5 @@
 use glam::Vec2;
 
-use crate::entity::direction::DIRECTIONS;
-
 use super::direction::Direction;
 
 /// A unique identifier for a node, represented by its index in the graph's storage.

src/game.rs

@@ -114,8 +114,7 @@ impl Game {
     pub fn present_backbuffer<T: RenderTarget>(&mut self, canvas: &mut Canvas<T>, backbuffer: &Texture) -> Result<()> {
         canvas.copy(backbuffer, None, None).map_err(anyhow::Error::msg)?;
         if self.debug_mode {
-            self.map
-                .debug_render_nodes(canvas, &mut self.atlas, &mut self.debug_text_texture);
+            self.map.debug_render_nodes(canvas);
         }
         self.draw_hud(canvas)?;
         canvas.present();

src/lib.rs

@@ -0,0 +1,11 @@
+//! Pac-Man game library crate.
+
+pub mod app;
+pub mod asset;
+pub mod audio;
+pub mod constants;
+pub mod emscripten;
+pub mod entity;
+pub mod game;
+pub mod map;
+pub mod texture;

src/map/builder.rs

@@ -1,18 +1,16 @@
-//! This module defines the game map and provides functions for interacting with it.
+//! Map construction and building functionality.
 
-use crate::constants::{MapTile, BOARD_CELL_SIZE, BOARD_PIXEL_OFFSET, BOARD_PIXEL_SIZE, CELL_SIZE};
+use crate::constants::{MapTile, BOARD_CELL_SIZE, CELL_SIZE};
 use crate::entity::direction::{Direction, DIRECTIONS};
+use crate::entity::graph::{Graph, Node, NodeId};
+use crate::map::parser::MapTileParser;
+use crate::map::render::MapRenderer;
 use crate::texture::sprite::{AtlasTile, SpriteAtlas};
 use glam::{IVec2, UVec2, Vec2};
-use sdl2::pixels::Color;
-use sdl2::rect::{Point, Rect};
 use sdl2::render::{Canvas, RenderTarget};
 use std::collections::{HashMap, VecDeque};
 use tracing::debug;
 
-use crate::entity::graph::{Graph, Node, NodeId};
-use crate::texture::text::TextTexture;
-
 /// The game map, responsible for holding the tile-based layout and the navigation graph.
 ///
 /// The map is represented as a 2D array of `MapTile`s. It also stores a navigation
@@ -38,38 +36,11 @@ impl Map {
     /// This function will panic if the board layout contains unknown characters or if
     /// the house door is not defined by exactly two '=' characters.
     pub fn new(raw_board: [&str; BOARD_CELL_SIZE.y as usize]) -> Map {
-        let mut map = [[MapTile::Empty; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize];
-        let mut house_door = [None; 2];
-        let mut tunnel_ends = [None; 2];
-        for (y, line) in raw_board.iter().enumerate().take(BOARD_CELL_SIZE.y as usize) {
-            for (x, character) in line.chars().enumerate().take(BOARD_CELL_SIZE.x as usize) {
-                let tile = match character {
-                    '#' => MapTile::Wall,
-                    '.' => MapTile::Pellet,
-                    'o' => MapTile::PowerPellet,
-                    ' ' => MapTile::Empty,
-                    'T' => {
-                        if tunnel_ends[0].is_none() {
-                            tunnel_ends[0] = Some(IVec2::new(x as i32, y as i32));
-                        } else {
-                            tunnel_ends[1] = Some(IVec2::new(x as i32, y as i32));
-                        }
-                        MapTile::Tunnel
-                    }
-                    c @ '0'..='4' => MapTile::StartingPosition(c.to_digit(10).unwrap() as u8),
-                    '=' => {
-                        if house_door[0].is_none() {
-                            house_door[0] = Some(IVec2::new(x as i32, y as i32));
-                        } else {
-                            house_door[1] = Some(IVec2::new(x as i32, y as i32));
-                        }
-                        MapTile::Wall
-                    }
-                    _ => panic!("Unknown character in board: {character}"),
-                };
-                map[x][y] = tile;
-            }
-        }
+        let parsed_map = MapTileParser::parse_board(raw_board).expect("Failed to parse board layout");
+
+        let map = parsed_map.tiles;
+        let house_door = parsed_map.house_door;
+        let tunnel_ends = parsed_map.tunnel_ends;
 
         let mut graph = Graph::new();
         let mut grid_to_node = HashMap::new();
@@ -169,10 +140,60 @@ impl Map {
             }
         }
 
-        if house_door.iter().filter(|x| x.is_some()).count() != 2 {
-            panic!("House door must have exactly 2 positions");
-        }
+        // Build house structure
+        Self::build_house(&mut graph, &grid_to_node, &house_door);
 
+        // Build tunnel connections
+        Self::build_tunnels(&mut graph, &grid_to_node, &tunnel_ends);
+
+        Map {
+            current: map,
+            grid_to_node,
+            graph,
+        }
+    }
+
+    /// Finds the starting position for a given entity ID.
+    ///
+    /// # Arguments
+    ///
+    /// * `entity_id` - The entity ID (0 for Pac-Man, 1-4 for ghosts)
+    ///
+    /// # Returns
+    ///
+    /// The starting position as a grid coordinate (`UVec2`), or `None` if not found.
+    pub fn find_starting_position(&self, entity_id: u8) -> Option<UVec2> {
+        for (x, col) in self.current.iter().enumerate().take(BOARD_CELL_SIZE.x as usize) {
+            for (y, &cell) in col.iter().enumerate().take(BOARD_CELL_SIZE.y as usize) {
+                if let MapTile::StartingPosition(id) = cell {
+                    if id == entity_id {
+                        return Some(UVec2::new(x as u32, y as u32));
+                    }
+                }
+            }
+        }
+        None
+    }
+
+    /// 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_texture: &mut AtlasTile) {
+        MapRenderer::render_map(canvas, atlas, map_texture);
+    }
+
+    /// Renders a debug visualization of the navigation graph.
+    ///
+    /// This function is intended for development and debugging purposes. It draws the
+    /// nodes and edges of the graph on top of the map, allowing for visual
+    /// inspection of the navigation paths.
+    pub fn debug_render_nodes<T: RenderTarget>(&self, canvas: &mut Canvas<T>) {
+        MapRenderer::debug_render_nodes(&self.graph, canvas);
+    }
+
+    /// Builds the house structure in the graph.
+    fn build_house(graph: &mut Graph, grid_to_node: &HashMap<IVec2, NodeId>, house_door: &[Option<IVec2>; 2]) {
         // Calculate the position of the house entrance node
         let (house_entrance_node_id, house_entrance_node_position) = {
             // Translate the grid positions to the actual node ids
@@ -231,7 +252,7 @@ impl Map {
             house_entrance_node_position + (Direction::Down.to_ivec2() * (3 * CELL_SIZE as i32)).as_vec2();
 
         // Create the center line
-        let (center_center_node_id, center_top_node_id) = create_house_line(&mut graph, center_line_center_position);
+        let (center_center_node_id, center_top_node_id) = create_house_line(graph, center_line_center_position);
 
         // Connect the house entrance to the top line
         graph
@@ -240,13 +261,13 @@ impl Map {
 
         // Create the left line
         let (left_center_node_id, _) = create_house_line(
-            &mut graph,
+            graph,
             center_line_center_position + (Direction::Left.to_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
         );
 
         // Create the right line
         let (right_center_node_id, _) = create_house_line(
-            &mut graph,
+            graph,
             center_line_center_position + (Direction::Right.to_ivec2() * (CELL_SIZE as i32 * 2)).as_vec2(),
         );
 
@@ -262,7 +283,10 @@ impl Map {
             .expect("Failed to connect house entrance to right top line");
 
         debug!("House entrance node id: {house_entrance_node_id}");
+    }
 
+    /// Builds the tunnel connections in the graph.
+    fn build_tunnels(graph: &mut Graph, grid_to_node: &HashMap<IVec2, NodeId>, tunnel_ends: &[Option<IVec2>; 2]) {
         // Create the hidden tunnel nodes
         let left_tunnel_hidden_node_id = {
             let left_tunnel_entrance_node_id = grid_to_node[&tunnel_ends[0].expect("Left tunnel end not found")];
@@ -311,89 +335,5 @@ impl Map {
                 Direction::Left,
             )
             .expect("Failed to connect left tunnel hidden node to right tunnel hidden node");
-
-        Map {
-            current: map,
-            grid_to_node,
-            graph,
-        }
-    }
-
-    /// Finds the starting position for a given entity ID.
-    ///
-    /// # Arguments
-    ///
-    /// * `entity_id` - The entity ID (0 for Pac-Man, 1-4 for ghosts)
-    ///
-    /// # Returns
-    ///
-    /// The starting position as a grid coordinate (`UVec2`), or `None` if not found.
-    pub fn find_starting_position(&self, entity_id: u8) -> Option<UVec2> {
-        for (x, col) in self.current.iter().enumerate().take(BOARD_CELL_SIZE.x as usize) {
-            for (y, &cell) in col.iter().enumerate().take(BOARD_CELL_SIZE.y as usize) {
-                if let MapTile::StartingPosition(id) = cell {
-                    if id == entity_id {
-                        return Some(UVec2::new(x as u32, y as u32));
-                    }
-                }
-            }
-        }
-        None
-    }
-
-    /// 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_texture: &mut AtlasTile) {
-        let dest = Rect::new(
-            BOARD_PIXEL_OFFSET.x as i32,
-            BOARD_PIXEL_OFFSET.y as i32,
-            BOARD_PIXEL_SIZE.x,
-            BOARD_PIXEL_SIZE.y,
-        );
-        let _ = map_texture.render(canvas, atlas, dest);
-    }
-
-    /// Renders a debug visualization of the navigation graph.
-    ///
-    /// This function is intended for development and debugging purposes. It draws the
-    /// nodes and edges of the graph on top of the map, allowing for visual
-    /// inspection of the navigation paths.
-    pub fn debug_render_nodes<T: RenderTarget>(&self, canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, text: &mut TextTexture) {
-        for i in 0..self.graph.node_count() {
-            let node = self.graph.get_node(i).unwrap();
-            let pos = node.position + BOARD_PIXEL_OFFSET.as_vec2();
-
-            // Draw connections
-            canvas.set_draw_color(Color::BLUE);
-
-            for edge in self.graph.adjacency_list[i].edges() {
-                let end_pos = self.graph.get_node(edge.target).unwrap().position + BOARD_PIXEL_OFFSET.as_vec2();
-                canvas
-                    .draw_line((pos.x as i32, pos.y as i32), (end_pos.x as i32, end_pos.y as i32))
-                    .unwrap();
-            }
-
-            // Draw node
-            // let color = if pacman.position.from_node_idx() == i.into() {
-            //     Color::GREEN
-            // } else if let Some(to_idx) = pacman.position.to_node_idx() {
-            //     if to_idx == i.into() {
-            //         Color::CYAN
-            //     } else {
-            //         Color::RED
-            //     }
-            // } else {
-            //     Color::RED
-            // };
-            canvas.set_draw_color(Color::GREEN);
-            canvas
-                .fill_rect(Rect::new(0, 0, 3, 3).centered_on(Point::new(pos.x as i32, pos.y as i32)))
-                .unwrap();
-
-            // Draw node index
-            // text.render(canvas, atlas, &i.to_string(), pos.as_uvec2()).unwrap();
-        }
     }
 }

src/map/mod.rs

@@ -0,0 +1,8 @@
+//! This module defines the game map and provides functions for interacting with it.
+
+pub mod builder;
+pub mod parser;
+pub mod render;
+
+// Re-export main types for convenience
+pub use builder::Map;

src/map/parser.rs

@@ -0,0 +1,168 @@
+//! Map parsing functionality for converting raw board layouts into structured data.
+
+use crate::constants::{MapTile, BOARD_CELL_SIZE};
+use glam::IVec2;
+use thiserror::Error;
+
+/// Error type for map parsing operations.
+#[derive(Debug, Error)]
+pub enum ParseError {
+    #[error("Unknown character in board: {0}")]
+    UnknownCharacter(char),
+    #[error("House door must have exactly 2 positions, found {0}")]
+    InvalidHouseDoorCount(usize),
+}
+
+/// Represents the parsed data from a raw board layout.
+#[derive(Debug)]
+pub struct ParsedMap {
+    /// The parsed tile layout.
+    pub tiles: [[MapTile; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize],
+    /// The positions of the house door tiles.
+    pub house_door: [Option<IVec2>; 2],
+    /// The positions of the tunnel end tiles.
+    pub tunnel_ends: [Option<IVec2>; 2],
+}
+
+/// Parser for converting raw board layouts into structured map data.
+pub struct MapTileParser;
+
+impl MapTileParser {
+    /// Parses a single character into a map tile.
+    ///
+    /// # Arguments
+    ///
+    /// * `c` - The character to parse
+    ///
+    /// # Returns
+    ///
+    /// The parsed map tile, or an error if the character is unknown.
+    pub fn parse_character(c: char) -> Result<MapTile, ParseError> {
+        match c {
+            '#' => Ok(MapTile::Wall),
+            '.' => Ok(MapTile::Pellet),
+            'o' => Ok(MapTile::PowerPellet),
+            ' ' => Ok(MapTile::Empty),
+            'T' => Ok(MapTile::Tunnel),
+            c @ '0'..='4' => Ok(MapTile::StartingPosition(c.to_digit(10).unwrap() as u8)),
+            '=' => Ok(MapTile::Wall), // House door is represented as a wall tile
+            _ => Err(ParseError::UnknownCharacter(c)),
+        }
+    }
+
+    /// Parses a raw board layout into structured map data.
+    ///
+    /// # Arguments
+    ///
+    /// * `raw_board` - The raw board layout as an array of strings
+    ///
+    /// # Returns
+    ///
+    /// The parsed map data, or an error if parsing fails.
+    ///
+    /// # Errors
+    ///
+    /// Returns an error if the board contains unknown characters or if the house door
+    /// is not properly defined by exactly two '=' characters.
+    pub fn parse_board(raw_board: [&str; BOARD_CELL_SIZE.y as usize]) -> Result<ParsedMap, ParseError> {
+        let mut tiles = [[MapTile::Empty; BOARD_CELL_SIZE.y as usize]; BOARD_CELL_SIZE.x as usize];
+        let mut house_door = [None; 2];
+        let mut tunnel_ends = [None; 2];
+
+        for (y, line) in raw_board.iter().enumerate().take(BOARD_CELL_SIZE.y as usize) {
+            for (x, character) in line.chars().enumerate().take(BOARD_CELL_SIZE.x as usize) {
+                let tile = Self::parse_character(character)?;
+
+                // Track special positions
+                match tile {
+                    MapTile::Tunnel => {
+                        if tunnel_ends[0].is_none() {
+                            tunnel_ends[0] = Some(IVec2::new(x as i32, y as i32));
+                        } else {
+                            tunnel_ends[1] = Some(IVec2::new(x as i32, y as i32));
+                        }
+                    }
+                    MapTile::Wall if character == '=' => {
+                        if house_door[0].is_none() {
+                            house_door[0] = Some(IVec2::new(x as i32, y as i32));
+                        } else {
+                            house_door[1] = Some(IVec2::new(x as i32, y as i32));
+                        }
+                    }
+                    _ => {}
+                }
+
+                tiles[x][y] = tile;
+            }
+        }
+
+        // Validate house door configuration
+        let house_door_count = house_door.iter().filter(|x| x.is_some()).count();
+        if house_door_count != 2 {
+            return Err(ParseError::InvalidHouseDoorCount(house_door_count));
+        }
+
+        Ok(ParsedMap {
+            tiles,
+            house_door,
+            tunnel_ends,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::constants::RAW_BOARD;
+
+    #[test]
+    fn test_parse_character() {
+        assert!(matches!(MapTileParser::parse_character('#').unwrap(), MapTile::Wall));
+        assert!(matches!(MapTileParser::parse_character('.').unwrap(), MapTile::Pellet));
+        assert!(matches!(MapTileParser::parse_character('o').unwrap(), MapTile::PowerPellet));
+        assert!(matches!(MapTileParser::parse_character(' ').unwrap(), MapTile::Empty));
+        assert!(matches!(MapTileParser::parse_character('T').unwrap(), MapTile::Tunnel));
+        assert!(matches!(
+            MapTileParser::parse_character('0').unwrap(),
+            MapTile::StartingPosition(0)
+        ));
+        assert!(matches!(
+            MapTileParser::parse_character('4').unwrap(),
+            MapTile::StartingPosition(4)
+        ));
+        assert!(matches!(MapTileParser::parse_character('=').unwrap(), MapTile::Wall));
+
+        // Test invalid character
+        assert!(MapTileParser::parse_character('X').is_err());
+    }
+
+    #[test]
+    fn test_parse_board() {
+        let result = MapTileParser::parse_board(RAW_BOARD);
+        assert!(result.is_ok());
+
+        let parsed = result.unwrap();
+
+        // Verify we have tiles
+        assert_eq!(parsed.tiles.len(), BOARD_CELL_SIZE.x as usize);
+        assert_eq!(parsed.tiles[0].len(), BOARD_CELL_SIZE.y as usize);
+
+        // Verify we found house door positions
+        assert!(parsed.house_door[0].is_some());
+        assert!(parsed.house_door[1].is_some());
+
+        // Verify we found tunnel ends
+        assert!(parsed.tunnel_ends[0].is_some());
+        assert!(parsed.tunnel_ends[1].is_some());
+    }
+
+    #[test]
+    fn test_parse_board_invalid_character() {
+        let mut invalid_board = RAW_BOARD.clone();
+        invalid_board[0] = "###########################X";
+
+        let result = MapTileParser::parse_board(invalid_board);
+        assert!(result.is_err());
+        assert!(matches!(result.unwrap_err(), ParseError::UnknownCharacter('X')));
+    }
+}

src/map/render.rs

@@ -0,0 +1,68 @@
+//! Map rendering functionality.
+
+use crate::constants::{BOARD_PIXEL_OFFSET, BOARD_PIXEL_SIZE};
+use crate::texture::sprite::{AtlasTile, SpriteAtlas};
+use sdl2::pixels::Color;
+use sdl2::rect::{Point, Rect};
+use sdl2::render::{Canvas, RenderTarget};
+
+/// Handles rendering operations for the map.
+pub struct MapRenderer;
+
+impl MapRenderer {
+    /// 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_map<T: RenderTarget>(canvas: &mut Canvas<T>, atlas: &mut SpriteAtlas, map_texture: &mut AtlasTile) {
+        let dest = Rect::new(
+            BOARD_PIXEL_OFFSET.x as i32,
+            BOARD_PIXEL_OFFSET.y as i32,
+            BOARD_PIXEL_SIZE.x,
+            BOARD_PIXEL_SIZE.y,
+        );
+        let _ = map_texture.render(canvas, atlas, dest);
+    }
+
+    /// Renders a debug visualization of the navigation graph.
+    ///
+    /// This function is intended for development and debugging purposes. It draws the
+    /// nodes and edges of the graph on top of the map, allowing for visual
+    /// inspection of the navigation paths.
+    pub fn debug_render_nodes<T: RenderTarget>(graph: &crate::entity::graph::Graph, canvas: &mut Canvas<T>) {
+        for i in 0..graph.node_count() {
+            let node = graph.get_node(i).unwrap();
+            let pos = node.position + BOARD_PIXEL_OFFSET.as_vec2();
+
+            // Draw connections
+            canvas.set_draw_color(Color::BLUE);
+
+            for edge in graph.adjacency_list[i].edges() {
+                let end_pos = graph.get_node(edge.target).unwrap().position + BOARD_PIXEL_OFFSET.as_vec2();
+                canvas
+                    .draw_line((pos.x as i32, pos.y as i32), (end_pos.x as i32, end_pos.y as i32))
+                    .unwrap();
+            }
+
+            // Draw node
+            // let color = if pacman.position.from_node_idx() == i.into() {
+            //     Color::GREEN
+            // } else if let Some(to_idx) = pacman.position.to_node_idx() {
+            //     if to_idx == i.into() {
+            //         Color::CYAN
+            //     } else {
+            //         Color::RED
+            //     }
+            // } else {
+            //     Color::RED
+            // };
+            canvas.set_draw_color(Color::GREEN);
+            canvas
+                .fill_rect(Rect::new(0, 0, 3, 3).centered_on(Point::new(pos.x as i32, pos.y as i32)))
+                .unwrap();
+
+            // Draw node index
+            // text.render(canvas, atlas, &i.to_string(), pos.as_uvec2()).unwrap();
+        }
+    }
+}

src/texture/text.rs

@@ -7,18 +7,13 @@
 //! # Example Usage
 //!
 //! ```rust
-//! use crate::texture::text::TextTexture;
-//! use std::rc::Rc;
+//! use pacman::texture::text::TextTexture;
 //!
 //! // Create a text texture with 1.0 scale (8x8 pixels per character)
-//! let mut text_renderer = TextTexture::new(atlas.clone(), 1.0);
+//! let mut text_renderer = TextTexture::new(1.0);
 //!
-//! // Render text at position (100, 50)
-//! text_renderer.render(canvas, "PAC-MAN", glam::UVec2::new(100, 50))?;
-//!
-//! // Change scale for larger text
+//! // Set scale for larger text
 //! text_renderer.set_scale(2.0);
-//! text_renderer.render(canvas, "SCORE: 1000", glam::UVec2::new(50, 100))?;
 //!
 //! // Calculate text width for positioning
 //! let width = text_renderer.text_width("GAME OVER");