get all tiles working'

src/bin/tetris.rs

@@ -5,19 +5,12 @@ use std::ops::{Add, Sub};
 
 use glite::debug_plugin;
 
-const GRID_X: f32 = 0.0;
-const GRID_Y: f32 = 0.0;
-const GRID_WIDTH: u32 = 15;
-const GRID_HEIGHT: u32 = 10;
-
-const WINDOW_WIDTH: f32 = 800.0;
-const WINDOW_HEIGHT: f32 = WINDOW_WIDTH * (GRID_HEIGHT as f32 / GRID_WIDTH as f32);
-
 #[cfg_attr(feature = "debug", derive(bevy_inspector_egui::InspectorOptions))]
 #[derive(Component, Debug, Default, Copy, Clone, Eq, PartialEq)]
 struct Position {
     pub x: u32,
     pub y: u32,
+    pub z: u32, // render order
 }
 
 impl Add for Position {
@@ -26,6 +19,7 @@ impl Add for Position {
         Self {
             x: self.x + other.x,
             y: self.y + other.y,
+            z: self.z + other.z,
         }
     }
 }
@@ -36,16 +30,11 @@ impl Sub for Position {
         Self {
             x: self.x.saturating_sub(other.x),
             y: self.y.saturating_sub(other.y),
+            z: self.z.saturating_sub(other.z),
         }
     }
 }
 
-impl Display for Position {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "({}, {})", self.x, self.y)
-    }
-}
-
 #[derive(Component)]
 struct Size {
     width: f32,
@@ -61,33 +50,35 @@ impl Size {
     }
 }
 
-fn spawn_tile(commands: &mut Commands, color: Color, size: f32, position: Position) {
+fn spawn_tile(commands: &mut Commands, color: Color, size: f32, position: Position) -> Entity {
     commands
         .spawn(Sprite {
             color,
             ..Default::default()
         })
         .insert(position)
-        .insert(Size::square(size));
+        .insert(Size::square(size))
+        .id()
 }
 
 fn scale_translation(
-    mut windows: Query<&mut Window, With<PrimaryWindow>>,
+    window: Single<&Window>,
     mut q: Query<(&Size, &mut Transform)>,
+    matrix: Res<Matrix>,
 ) {
-    let window = windows.single_mut();
     for (sprite_size, mut transform) in q.iter_mut() {
         transform.scale = Vec3::new(
-            sprite_size.width / GRID_WIDTH as f32 * window.width(),
+            sprite_size.width / matrix.width as f32 * window.width(),
-            sprite_size.height / GRID_HEIGHT as f32 * window.height(),
+            sprite_size.height / matrix.height as f32 * window.height(),
             1.0,
         );
     }
 }
 
 fn position_translation(
-    mut windows: Query<&mut Window, With<PrimaryWindow>>,
+    window: Single<&Window>,
     mut q: Query<(&Position, &mut Transform)>,
+    matrix: Res<Matrix>,
 ) {
     // We subtract half the window width because our coordinate system starts at the bottom left, and
     // Translation starts from the center. We then add half the size of a single tile, because we want
@@ -97,31 +88,61 @@ fn position_translation(
         pos / bound_game * bound_window - (bound_window / 2.) + (tile_size / 2.)
     }
 
-    let window = windows.single_mut();
     for (pos, mut transform) in q.iter_mut() {
         transform.translation = Vec3::new(
-            convert(pos.x as f32, window.width(), GRID_WIDTH as f32) + GRID_X,
+            convert(pos.x as f32, window.width(), matrix.width as f32),
-            convert(pos.y as f32, window.height(), GRID_HEIGHT as f32) + GRID_Y,
+            convert(pos.y as f32, window.height(), matrix.height as f32),
-            0.0,
+            pos.z as f32,
         );
     }
 }
 
-fn test_update() {}
+#[derive(Component)]
+struct Tetromino([[u32; 2]; 4]);
+
+// TODO: check these positions are right
+const BRICK_I: Tetromino = Tetromino([[0, 0], [1, 0], [2, 0], [3, 0]]);
+const BRICK_J: Tetromino = Tetromino([[0, 0], [1, 0], [2, 0], [2, 1]]);
+const BRICK_L: Tetromino = Tetromino([[0, 0], [1, 0], [2, 0], [0, 1]]);
+const BRICK_O: Tetromino = Tetromino([[0, 0], [1, 0], [0, 1], [1, 1]]);
+const BRICK_S: Tetromino = Tetromino([[0, 0], [1, 0], [1, 1], [2, 1]]);
+const BRICK_T: Tetromino = Tetromino([[0, 0], [1, 0], [2, 0], [1, 1]]);
+const BRICK_Z: Tetromino = Tetromino([[0, 1], [1, 1], [1, 0], [2, 0]]);
+
+enum RenderLayer {
+    Background = 0,
+    Brick = 10,
+}
+
+fn spawn_tetromino(commands: &mut Commands, tetromino: Tetromino, x: u32, y: u32) {
+    for coord in tetromino.0 {
+        spawn_tile(
+            commands,
+            Color::srgb(1.0, 1.0, 1.0),
+            0.77,
+            Position {
+                x: coord[0] + x,
+                y: coord[1] + y,
+                z: RenderLayer::Brick as u32,
+            },
+        );
+    }
+}
 
 fn main() {
     let mut app = App::new();
     app.add_plugins(DefaultPlugins.set(WindowPlugin {
         primary_window: Some(Window {
             title: "Tetris".to_string(),
-            resolution: WindowResolution::new(WINDOW_WIDTH, WINDOW_HEIGHT),
             ..default()
         }),
         ..default()
     }));
 
-    app.add_systems(Startup, setup_scene)
+    app.add_systems(
-        .add_systems(Update, test_update)
+        Startup,
+        (init_singletons, init_window, init_tile_grid).chain(),
+    )
     .add_systems(PostUpdate, (scale_translation, position_translation));
 
     app.add_plugins(debug_plugin::debug_plugin);
@@ -130,15 +151,74 @@ fn main() {
     app.run();
 }
 
-fn setup_scene(mut commands: Commands) {
+#[derive(Resource)]
+struct Score(u32);
+
+#[derive(Resource, Copy, Clone)]
+struct Matrix {
+    width: u32,
+    height: u32,
+}
+
+fn init_singletons(mut commands: Commands) {
+    let matrix = Matrix {
+        height: 15,
+        width: 15,
+    };
+    commands.insert_resource(Score(0));
+    commands.insert_resource(matrix);
+
     commands.spawn(Camera2d {});
-    for y in 0..GRID_HEIGHT {
+}
-        for x in 0..GRID_WIDTH {
+
-            let color = match ((y * GRID_HEIGHT) + x + y) % 2 == 0 {
+fn init_window(matrix: Res<Matrix>, mut window: Single<&mut Window>) {
+    const SCALE_FACTOR: f32 = 77.;
+
+    window.resolution.set(
+        matrix.width as f32 * SCALE_FACTOR,
+        matrix.height as f32 * SCALE_FACTOR,
+    );
+}
+
+#[derive(Component)]
+struct Grid;
+
+fn init_tile_grid(mut commands: Commands, matrix: Res<Matrix>) {
+    let grid = commands
+        .spawn(Grid)
+        .insert(Name::new("Background Grid"))
+        .insert((Transform::default(), Visibility::default()))
+        .id();
+
+    for y in 0..matrix.height {
+        for x in 0..matrix.width {
+            let color = match (y + x) % 2 == 0 {
                 true => Color::srgb(0.5, 0.5, 0.5),
                 false => Color::srgb(0.55, 0.55, 0.55),
             };
-            spawn_tile(&mut commands, color, 1.0, Position { x, y });
+            let e = spawn_tile(
+                &mut commands,
+                color,
+                1.0,
+                Position {
+                    x,
+                    y,
+                    z: RenderLayer::Background as u32,
+                },
+            );
+            commands.entity(e).set_parent(grid);
         }
     }
+    test_render_all_tetrominos(commands);
+}
+
+fn test_render_all_tetrominos(mut commands: Commands) {
+    spawn_tetromino(&mut commands, BRICK_I, 0, 0);
+    spawn_tetromino(&mut commands, BRICK_T, 4, 0);
+    spawn_tetromino(&mut commands, BRICK_J, 8, 0);
+    spawn_tetromino(&mut commands, BRICK_L, 12, 0);
+    spawn_tetromino(&mut commands, BRICK_O, 0, 4);
+    spawn_tetromino(&mut commands, BRICK_S, 4, 4);
+    spawn_tetromino(&mut commands, BRICK_Z, 8, 4);
+    spawn_tetromino(&mut commands, BRICK_J, 12, 4);
 }