Basic animator and assetmanager using it.

src/animator.odin

@@ -0,0 +1,58 @@
+package game
+
+import rl "vendor:raylib"
+
+AnimationClip :: struct {
+    texture:      rl.Texture2D,
+    frame_count:  int,
+    frame_width:  i32,
+    frame_height: i32,
+    frame_time:   f32,
+    looping:      bool,
+}
+
+AnimationState :: struct {
+	clip: 	 	   ^AnimationClip,
+	current_frame: int,
+	timer: 		   f32,
+	finished: 	   bool,
+}
+
+animation_play :: proc(state: ^AnimationState, clip: ^AnimationClip) {
+	// already playing, do not reset
+	if state.clip == clip do return
+	state.clip = clip
+	state.current_frame = 0
+	state.timer = 0
+	state.finished = false
+}
+
+animation_update :: proc(state: ^AnimationState, dt: f32) {
+	clip := state.clip
+	if clip == nil || state.finished do return
+
+	state.timer += dt
+	if state.timer >= clip.frame_time {
+		state.timer -= clip.frame_time	
+		state.current_frame += 1
+		if state.current_frame >= clip.frame_count {
+			if clip.looping {
+				state.current_frame = 0
+			} else {
+				state.current_frame = clip.frame_count - 1
+				state.finished = true
+			}
+		}
+	}
+}
+
+animation_frame_rect :: proc(state: ^AnimationState) -> rl.Rectangle {
+	clip := state.clip
+
+	return rl.Rectangle {
+		x = f32(state.current_frame) * f32(clip.frame_width),
+		y = 0,
+		width = f32(clip.frame_width),
+		height = f32(clip.frame_height),
+	}
+}

src/asset_manager.odin

@@ -6,22 +6,34 @@
 // -----------------------------------------------------------------------------
 package game
 
-// import rl "vendor:raylib"
+import rl "vendor:raylib"
+
+Player_Assets :: struct {
+    clips: [Player_State]AnimationClip,
+}
 
 Asset_Manager :: struct {
-    // Empty for now.
-    //player: rl.Texture2D,
+    player: Player_Assets,
 }
 
 asset_manager_init :: proc() -> Asset_Manager {
     assets := Asset_Manager{}
 
-    // assets.player = rl.LoadTexture("assets/sprites/player.png")
+    idle_tex   := rl.LoadTexture("assets/textures/player/player_idle.png")
+    walk_tex   := rl.LoadTexture("assets/textures/player/player_walk.png")
+
+    assets.player.clips[.IDLE] = AnimationClip {
+        texture = idle_tex, frame_count = 6, frame_width = 32, frame_height = 32, frame_time = 0.14, looping = true,
+    }
+    assets.player.clips[.WALK] = AnimationClip {
+        texture = walk_tex, frame_count = 8, frame_width = 32, frame_height = 32, frame_time = 0.14, looping = true,
+    }
 
     return assets
 }
 
 asset_manager_destroy :: proc(assets: ^Asset_Manager) {
-    // unload textures here later.
-    //rl.UnloadTexture(assets.player)
+    for clip in assets.player.clips {
+        rl.UnloadTexture(clip.texture)
+    }
 }