WIP topdown game

Makefile

@@ -4,7 +4,8 @@
 # EXAMPLE=particles
 # EXAMPLE=post_processing
 # EXAMPLE=shapes
-EXAMPLE=ecs_sprite
+# EXAMPLE=ecs_sprite
+EXAMPLE=ecs_topdown_game
 
 # default: build-examples
 # default: wasm-build

comfy/examples/ecs_topdown_game.rs

@@ -0,0 +1,91 @@
+use comfy::*;
+
+example_game!("ECS Topdown Game", setup, update);
+
+struct Player;
+struct Grass;
+
+fn setup(c: &mut EngineContext) {
+    // Load the grass texture
+    c.load_texture_from_bytes(
+        "grass",
+        include_bytes!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/../assets/grass.png"
+        )),
+        wgpu::AddressMode::ClampToEdge,
+    );
+
+    // Load the player texture
+    c.load_texture_from_bytes(
+        "player",
+        include_bytes!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/../assets/chicken.png"
+        )),
+        wgpu::AddressMode::ClampToEdge,
+    );
+
+    for x in 0..30 {
+        for y in 0..30 {
+            let variant = random_i32(0, 2);
+            // Tile the world with random variant of grass sprite
+            c.commands().spawn((
+                Sprite::new("grass".to_string(), vec2(1.0, 1.0), 0, WHITE)
+                    .with_rect(32 * variant, 0, 32, 32),
+                Transform::position(vec2(x as f32, y as f32)),
+                Grass,
+            ));
+        }
+    }
+
+    // Spawn the player entity and make sure z-index is above the grass
+    c.commands().spawn((
+        Transform::position(vec2(10.0, 10.0)),
+        Player,
+        AnimatedSprite::spritesheet(
+            "player",
+            Spritesheet { rows: 1, columns: 28 },
+            0.1,
+            true,
+            10,
+            splat(1.0),
+            WHITE,
+            splat(0.0),
+            Box::new(|_| {}),
+        ),
+    ));
+}
+
+fn update(c: &mut EngineContext) {
+    let dt = c.delta;
+
+    for (entity, (player, animated_sprite, mut transform)) in c
+        .world()
+        .query::<(&Player, &mut AnimatedSprite, &mut Transform)>()
+        .iter()
+    {
+        // Handle movement and animation
+        let mut moved = false;
+        let speed = 1.0;
+
+        if is_key_down(KeyCode::W) {
+            transform.position.y += speed * dt;
+            moved = true;
+        }
+        if is_key_down(KeyCode::S) {
+            transform.position.y -= speed * dt;
+            moved = true;
+        }
+        if is_key_down(KeyCode::A) {
+            transform.position.x -= speed * dt;
+            moved = true;
+        }
+        if is_key_down(KeyCode::D) {
+            transform.position.x += speed * dt;
+            moved = true;
+        }
+
+        main_camera_mut().center = transform.position;
+    }
+}