feat: pellet consumption, score & map mutation

Cargo.lock

@@ -17,6 +17,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "c_vec"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdd7a427adc0135366d99db65b36dae9237130997e560ed61118041fb72be6e8"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -160,11 +166,12 @@ checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
 
 [[package]]
 name = "sdl2"
-version = "0.35.2"
+version = "0.38.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7959277b623f1fb9e04aea73686c3ca52f01b2145f8ea16f4ff30d8b7623b1a"
+checksum = "2d42407afc6a8ab67e36f92e80b8ba34cbdc55aaeed05249efe9a2e8d0e9feef"
 dependencies = [
  "bitflags",
+ "c_vec",
  "lazy_static",
  "libc",
  "sdl2-sys",
@@ -172,12 +179,13 @@ dependencies = [
 
 [[package]]
 name = "sdl2-sys"
-version = "0.35.2"
+version = "0.38.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3586be2cf6c0a8099a79a12b4084357aa9b3e0b0d7980e3b67aaf7a9d55f9f0"
+checksum = "3ff61407fc75d4b0bbc93dc7e4d6c196439965fbef8e4a4f003a36095823eac0"
 dependencies = [
  "cfg-if",
  "libc",
+ "vcpkg",
  "version-compare",
 ]
 
@@ -311,6 +319,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "version-compare"
 version = "0.1.1"

Cargo.toml

@@ -7,8 +7,20 @@ edition = "2021"
 
 [dependencies]
 lazy_static = "1.4.0"
-sdl2 = { version = "0.35", features = ["image", "ttf", "mixer"] }
 spin_sleep = "1.1.1"
 tracing = { version = "0.1.37", features = ["max_level_debug", "release_max_level_warn"]}
 tracing-error = "0.2.0"
-tracing-subscriber = {version = "0.3.17", features = ["env-filter"]}
+tracing-subscriber = {version = "0.3.17", features = ["env-filter"]}
+
+[dependencies.sdl2]
+version = "0.38"
+default-features = false
+features = ["ttf","image","gfx","mixer","static-link","use-vcpkg"]
+
+[package.metadata.vcpkg]
+dependencies = ["sdl2", "sdl2-image[libjpeg-turbo,tiff,libwebp]", "sdl2-ttf", "sdl2-gfx", "sdl2-mixer"]
+git = "https://github.com/microsoft/vcpkg"
+rev = "2024.05.24" # release 2024.05.24 # to check for a new one, check https://github.com/microsoft/vcpkg/releases
+
+[package.metadata.vcpkg.target]
+x86_64-pc-windows-msvc = { triplet = "x64-windows-static-md" }

src/game.rs

@@ -3,8 +3,10 @@ use std::rc::Rc;
 use sdl2::image::LoadTexture;
 use sdl2::keyboard::Keycode;
 use sdl2::render::{Texture, TextureCreator};
+use sdl2::ttf::{Font, FontStyle};
 use sdl2::video::WindowContext;
 use sdl2::{pixels::Color, render::Canvas, video::Window};
+use tracing::event;
 
 use crate::constants::{MapTile, BOARD_HEIGHT, BOARD_WIDTH, RAW_BOARD};
 use crate::direction::Direction;
@@ -15,22 +17,38 @@ use crate::pacman::Pacman;
 pub struct Game<'a> {
     canvas: &'a mut Canvas<Window>,
     map_texture: Texture<'a>,
+    pellet_texture: Texture<'a>,
+    power_pellet_texture: Texture<'a>,
+    font: Font<'a, 'static>,
     pacman: Pacman<'a>,
-    map: Rc<Map>,
+    map: Rc<std::cell::RefCell<Map>>,
     debug: bool,
+    score: u32,
 }
 
 impl Game<'_> {
     pub fn new<'a>(
         canvas: &'a mut Canvas<Window>,
         texture_creator: &'a TextureCreator<WindowContext>,
+        ttf_context: &'a sdl2::ttf::Sdl2TtfContext,
     ) -> Game<'a> {
-        let map = Rc::new(Map::new(RAW_BOARD));
+        let map = Rc::new(std::cell::RefCell::new(Map::new(RAW_BOARD)));
         let pacman_atlas = texture_creator
             .load_texture("assets/32/pacman.png")
             .expect("Could not load pacman texture");
         let pacman = Pacman::new((1, 1), pacman_atlas, Rc::clone(&map));
 
+        let pellet_texture = texture_creator
+            .load_texture("assets/24/pellet.png")
+            .expect("Could not load pellet texture");
+        let power_pellet_texture = texture_creator
+            .load_texture("assets/24/energizer.png")
+            .expect("Could not load power pellet texture");
+
+        let font = ttf_context
+            .load_font("assets/font/konami.ttf", 24)
+            .expect("Could not load font");
+
         Game {
             canvas,
             pacman: pacman,
@@ -38,7 +56,11 @@ impl Game<'_> {
             map: map,
             map_texture: texture_creator
                 .load_texture("assets/map.png")
-                .expect("Could not load pacman texture"),
+                .expect("Could not load map texture"),
+            pellet_texture,
+            power_pellet_texture,
+            font,
+            score: 0,
         }
     }
 
@@ -53,8 +75,57 @@ impl Game<'_> {
         }
     }
 
+    pub fn add_score(&mut self, points: u32) {
+        self.score += points;
+    }
+
     pub fn tick(&mut self) {
         self.pacman.tick();
+        self.check_pellet_eating();
+    }
+
+    fn check_pellet_eating(&mut self) {
+        let cell_pos = self.pacman.cell_position();
+
+        // Check if there's a pellet at the current position
+        let tile = {
+            let map = self.map.borrow();
+            map.get_tile((cell_pos.0 as i32, cell_pos.1 as i32))
+        };
+
+        if let Some(tile) = tile {
+            match tile {
+                MapTile::Pellet => {
+                    // Eat the pellet and add score
+                    {
+                        let mut map = self.map.borrow_mut();
+                        map.set_tile((cell_pos.0 as i32, cell_pos.1 as i32), MapTile::Empty);
+                    }
+                    self.add_score(10);
+                    event!(
+                        tracing::Level::DEBUG,
+                        "Pellet eaten at ({}, {})",
+                        cell_pos.0,
+                        cell_pos.1
+                    );
+                }
+                MapTile::PowerPellet => {
+                    // Eat the power pellet and add score
+                    {
+                        let mut map = self.map.borrow_mut();
+                        map.set_tile((cell_pos.0 as i32, cell_pos.1 as i32), MapTile::Empty);
+                    }
+                    self.add_score(50);
+                    event!(
+                        tracing::Level::DEBUG,
+                        "Power pellet eaten at ({}, {})",
+                        cell_pos.0,
+                        cell_pos.1
+                    );
+                }
+                _ => {}
+            }
+        }
     }
 
     pub fn draw(&mut self) {
@@ -62,21 +133,27 @@ impl Game<'_> {
         self.canvas.set_draw_color(Color::RGB(0, 0, 0));
         self.canvas.clear();
 
-
-        // Render the map   
+        // Render the map
         self.canvas
             .copy(&self.map_texture, None, None)
             .expect("Could not render texture on canvas");
 
+        // Render pellets
+        self.render_pellets();
+
         // Render the pacman
         self.pacman.render(self.canvas);
 
-        // Draw a grid
+        // Render score
+        self.render_score();
+
+        // Draw the debug grid
         if self.debug {
             for x in 0..BOARD_WIDTH {
                 for y in 0..BOARD_HEIGHT {
                     let tile = self
                         .map
+                        .borrow()
                         .get_tile((x as i32, y as i32))
                         .unwrap_or(MapTile::Empty);
                     let mut color = None;
@@ -110,6 +187,7 @@ impl Game<'_> {
 
     fn draw_cell(&mut self, cell: (u32, u32), color: Color) {
         let position = Map::cell_to_pixel(cell);
+
         self.canvas.set_draw_color(color);
         self.canvas
             .draw_rect(sdl2::rect::Rect::new(
@@ -120,4 +198,78 @@ impl Game<'_> {
             ))
             .expect("Could not draw rectangle");
     }
+
+    fn render_pellets(&mut self) {
+        for x in 0..BOARD_WIDTH {
+            for y in 0..BOARD_HEIGHT {
+                let tile = self
+                    .map
+                    .borrow()
+                    .get_tile((x as i32, y as i32))
+                    .unwrap_or(MapTile::Empty);
+
+                match tile {
+                    MapTile::Pellet => {
+                        let position = Map::cell_to_pixel((x, y));
+                        let dst_rect = sdl2::rect::Rect::new(position.0, position.1, 24, 24);
+                        self.canvas
+                            .copy(&self.pellet_texture, None, Some(dst_rect))
+                            .expect("Could not render pellet");
+                    }
+                    MapTile::PowerPellet => {
+                        let position = Map::cell_to_pixel((x, y));
+                        let dst_rect = sdl2::rect::Rect::new(position.0, position.1, 24, 24);
+                        self.canvas
+                            .copy(&self.power_pellet_texture, None, Some(dst_rect))
+                            .expect("Could not render power pellet");
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+
+    fn render_score(&mut self) {
+        let lives = 3;
+        let score_text = format!("{:02}", self.score);
+
+        let x_offset = 12;
+        let y_offset = 2;
+        let lives_offset = 3;
+        let score_offset = 7 - (score_text.len() as i32);
+        let gap_offset = 6;
+
+        self.render_text(
+            &format!("{}UP   HIGH SCORE   ", lives),
+            (24 * lives_offset + x_offset, y_offset),
+            Color::WHITE,
+        );
+        self.render_text(
+            &score_text,
+            (24 * score_offset + x_offset, 24 + y_offset + gap_offset),
+            Color::WHITE,
+        );
+    }
+
+    fn render_text(&mut self, text: &str, position: (i32, i32), color: Color) {
+        let surface = self
+            .font
+            .render(text)
+            .blended(color)
+            .expect("Could not render text surface");
+
+        let texture_creator = self.canvas.texture_creator();
+        let texture = texture_creator
+            .create_texture_from_surface(&surface)
+            .expect("Could not create texture from surface");
+
+        let query = texture.query();
+
+        let dst_rect =
+            sdl2::rect::Rect::new(position.0, position.1, query.width + 4, query.height + 4);
+
+        self.canvas
+            .copy(&texture, None, Some(dst_rect))
+            .expect("Could not render text texture");
+    }
 }

src/helper.rs

@@ -1,15 +1,110 @@
+/// Checks if two grid positions are adjacent to each other
+///
+/// # Arguments
+/// * `a` - First position as (x, y) coordinates
+/// * `b` - Second position as (x, y) coordinates  
+/// * `diagonal` - Whether to consider diagonal adjacency (true) or only orthogonal (false)
+///
+/// # Returns
+/// * `true` if positions are adjacent according to the diagonal parameter
+/// * `false` otherwise
 pub fn is_adjacent(a: (u32, u32), b: (u32, u32), diagonal: bool) -> bool {
     let (ax, ay) = a;
     let (bx, by) = b;
+
+    // Calculate absolute differences between coordinates
+    let dx = if ax > bx { ax - bx } else { bx - ax };
+    let dy = if ay > by { ay - by } else { by - ay };
+
     if diagonal {
-        (ax == bx && (ay == by + 1 || ay == by - 1))
-            || (ay == by && (ax == bx + 1 || ax == bx - 1))
-            || (ax == bx + 1 && ay == by + 1)
-            || (ax == bx + 1 && ay == by - 1)
-            || (ax == bx - 1 && ay == by + 1)
-            || (ax == bx - 1 && ay == by - 1)
+        // For diagonal adjacency: both differences must be ≤ 1 and at least one > 0
+        dx <= 1 && dy <= 1 && (dx + dy) > 0
     } else {
-        (ax == bx && (ay == by + 1 || ay == by - 1))
-            || (ay == by && (ax == bx + 1 || ax == bx - 1))
+        // For orthogonal adjacency: exactly one difference must be 1, the other 0
+        (dx == 1 && dy == 0) || (dx == 0 && dy == 1)
     }
-}
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_orthogonal_adjacency() {
+        // Test orthogonal adjacency (diagonal = false)
+
+        // Same position should not be adjacent
+        assert!(!is_adjacent((0, 0), (0, 0), false));
+
+        // Adjacent positions should be true
+        assert!(is_adjacent((0, 0), (1, 0), false)); // Right
+        assert!(is_adjacent((0, 0), (0, 1), false)); // Down
+        assert!(is_adjacent((1, 1), (0, 1), false)); // Left
+        assert!(is_adjacent((1, 1), (1, 0), false)); // Up
+
+        // Diagonal positions should be false
+        assert!(!is_adjacent((0, 0), (1, 1), false));
+        assert!(!is_adjacent((0, 1), (1, 0), false));
+
+        // Positions more than 1 step away should be false
+        assert!(!is_adjacent((0, 0), (2, 0), false));
+        assert!(!is_adjacent((0, 0), (0, 2), false));
+        assert!(!is_adjacent((0, 0), (2, 2), false));
+    }
+
+    #[test]
+    fn test_diagonal_adjacency() {
+        // Test diagonal adjacency (diagonal = true)
+
+        // Same position should not be adjacent
+        assert!(!is_adjacent((0, 0), (0, 0), true));
+
+        // Orthogonal adjacent positions should be true
+        assert!(is_adjacent((0, 0), (1, 0), true)); // Right
+        assert!(is_adjacent((0, 0), (0, 1), true)); // Down
+        assert!(is_adjacent((1, 1), (0, 1), true)); // Left
+        assert!(is_adjacent((1, 1), (1, 0), true)); // Up
+
+        // Diagonal adjacent positions should be true
+        assert!(is_adjacent((0, 0), (1, 1), true)); // Down-right
+        assert!(is_adjacent((1, 0), (0, 1), true)); // Down-left
+        assert!(is_adjacent((0, 1), (1, 0), true)); // Up-right
+        assert!(is_adjacent((1, 1), (0, 0), true)); // Up-left
+
+        // Positions more than 1 step away should be false
+        assert!(!is_adjacent((0, 0), (2, 0), true));
+        assert!(!is_adjacent((0, 0), (0, 2), true));
+        assert!(!is_adjacent((0, 0), (2, 2), true));
+        assert!(!is_adjacent((0, 0), (1, 2), true));
+    }
+
+    #[test]
+    fn test_edge_cases() {
+        // Test with larger coordinates
+        assert!(is_adjacent((100, 100), (101, 100), false));
+        assert!(is_adjacent((100, 100), (100, 101), false));
+        assert!(!is_adjacent((100, 100), (102, 100), false));
+
+        assert!(is_adjacent((100, 100), (101, 101), true));
+        assert!(!is_adjacent((100, 100), (102, 102), true));
+
+        // Test with zero coordinates
+        assert!(is_adjacent((0, 0), (1, 0), false));
+        assert!(is_adjacent((0, 0), (0, 1), false));
+        assert!(is_adjacent((0, 0), (1, 1), true));
+    }
+
+    #[test]
+    fn test_commutative_property() {
+        // The function should work the same regardless of parameter order
+        assert_eq!(
+            is_adjacent((1, 2), (2, 2), false),
+            is_adjacent((2, 2), (1, 2), false)
+        );
+
+        assert_eq!(
+            is_adjacent((1, 2), (2, 3), true),
+            is_adjacent((2, 3), (1, 2), true)
+        );
+    }
+}

src/main.rs

@@ -12,6 +12,7 @@ mod constants;
 mod direction;
 mod entity;
 mod game;
+mod helper;
 mod map;
 mod modulation;
 mod pacman;
@@ -19,6 +20,7 @@ mod pacman;
 pub fn main() {
     let sdl_context = sdl2::init().unwrap();
     let video_subsystem = sdl_context.video().unwrap();
+    let ttf_context = sdl2::ttf::init().unwrap();
 
     // Setup tracing
     let subscriber = tracing_subscriber::fmt()
@@ -45,7 +47,7 @@ pub fn main() {
         .expect("Could not set logical size");
 
     let texture_creator = canvas.texture_creator();
-    let mut game = Game::new(&mut canvas, &texture_creator);
+    let mut game = Game::new(&mut canvas, &texture_creator, &ttf_context);
 
     let mut event_pump = sdl_context
         .event_pump()
@@ -149,14 +151,6 @@ pub fn main() {
             let average_sleep = sleep_time / PERIOD;
             let average_process = loop_time - average_sleep;
 
-            event!(
-                tracing::Level::DEBUG,
-                "Timing Averages [fps={}] [sleep={:?}] [process={:?}]",
-                average_fps,
-                average_sleep,
-                average_process
-            );
-
             sleep_time = Duration::ZERO;
             last_averaging_time = Instant::now();
         }

src/map.rs

@@ -53,6 +53,18 @@ impl Map {
         Some(self.inner[x][y])
     }
 
+    pub fn set_tile(&mut self, cell: (i32, i32), tile: MapTile) -> bool {
+        let x = cell.0 as usize;
+        let y = cell.1 as usize;
+
+        if x >= BOARD_WIDTH as usize || y >= BOARD_HEIGHT as usize {
+            return false;
+        }
+
+        self.inner[x][y] = tile;
+        true
+    }
+
     pub fn cell_to_pixel(cell: (u32, u32)) -> (i32, i32) {
         ((cell.0 as i32) * 24, ((cell.1 + 3) as i32) * 24)
     }

src/pacman.rs

@@ -1,3 +1,4 @@
+use std::cell::RefCell;
 use std::rc::Rc;
 
 use sdl2::{
@@ -22,14 +23,18 @@ pub struct Pacman<'a> {
     pub direction: Direction,
     pub next_direction: Option<Direction>,
     pub stopped: bool,
-    map: Rc<Map>,
+    map: Rc<RefCell<Map>>,
     speed: u32,
     modulation: SimpleTickModulator,
     sprite: AnimatedTexture<'a>,
 }
 
 impl Pacman<'_> {
-    pub fn new<'a>(starting_position: (u32, u32), atlas: Texture<'a>, map: Rc<Map>) -> Pacman<'a> {
+    pub fn new<'a>(
+        starting_position: (u32, u32),
+        atlas: Texture<'a>,
+        map: Rc<RefCell<Map>>,
+    ) -> Pacman<'a> {
         Pacman {
             position: Map::cell_to_pixel(starting_position),
             direction: Direction::Right,
@@ -70,6 +75,7 @@ impl Pacman<'_> {
         let proposed_next_cell = self.next_cell(self.next_direction);
         let proposed_next_tile = self
             .map
+            .borrow()
             .get_tile(proposed_next_cell)
             .unwrap_or(MapTile::Empty);
         if proposed_next_tile != MapTile::Wall {
@@ -79,7 +85,7 @@ impl Pacman<'_> {
     }
 
     fn internal_position_even(&self) -> (u32, u32) {
-        let (x, y ) = self.internal_position();
+        let (x, y) = self.internal_position();
         ((x / 2u32) * 2u32, (y / 2u32) * 2u32)
     }
 }
@@ -115,7 +121,7 @@ impl Entity for Pacman<'_> {
             self.handle_requested_direction();
 
             let next = self.next_cell(None);
-            let next_tile = self.map.get_tile(next).unwrap_or(MapTile::Empty);
+            let next_tile = self.map.borrow().get_tile(next).unwrap_or(MapTile::Empty);
 
             if !self.stopped && next_tile == MapTile::Wall {
                 event!(tracing::Level::DEBUG, "Wall collision. Stopping.");
@@ -125,7 +131,7 @@ impl Entity for Pacman<'_> {
                 self.stopped = false;
             }
         }
-        
+
         if !self.stopped && self.modulation.next() {
             let speed = self.speed as i32;
             match self.direction {