3 files changed, 12 insertions, 41 deletions
diff --git a/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/AbstractionEngine.kt b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/AbstractionEngine.kt
new file mode 100644
index 0000000..18349c3
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/AbstractionEngine.kt
@@ -0,0 +1,5 @@
+package coffee.liz.abstractionengine.game
+
+class AbstractionEngine {
+
+}
+\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Game.kt b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Game.kt
index 9490f83..0c3a007 100644
--- a/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Game.kt
+++ b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Game.kt
@@ -6,64 +6,35 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import coffee.liz.ecs.World
 import kotlinx.coroutines.isActive
+import kotlin.time.Duration.Companion.nanoseconds
 
 /**
- * Manages the game loop for an ECS world.
- * Syncs with Compose's frame rate (like requestAnimationFrame) and provides
- * the world to child content for custom rendering/UI.
- *
- * @param world The ECS world containing entities and systems
- * @param content Composable content that can use the world for rendering
+ * Manages and paints the [World].
  */
 @Composable
 fun Game(
     world: World,
     content: @Composable () -> Unit
 ) {
-    // Trigger recomposition when we need to redraw
     var frameCount by remember { mutableStateOf(0) }
 
-    // Game loop - syncs with Compose's frame rate like requestAnimationFrame
     LaunchedEffect(world) {
-        var lastFrameTimeNanos = 0L
+        var lastUpdate: Long? = null
 
         while (isActive) {
-            // Wait for next frame (like requestAnimationFrame)
             withFrameNanos { frameTimeNanos ->
-                val deltaTime = if (lastFrameTimeNanos != 0L) {
-                    (frameTimeNanos - lastFrameTimeNanos) / 1_000_000_000f
-                } else {
-                    0f
-                }
-                lastFrameTimeNanos = frameTimeNanos
-
-                // Update ECS world (runs all systems)
-                if (deltaTime > 0f) {
-                    world.update(deltaTime)
-                }
-
-                // Trigger recomposition to redraw
                 frameCount++
             }
         }
     }
 
-    // Render content
     content()
 }
 
-/**
- * A Canvas that renders sprites from an ECS world using a RenderSystem.
- *
- * @param world The ECS world containing entities to render
- * @param renderSystem The system responsible for rendering sprites
- * @param backgroundColor Background color for the canvas
- * @param modifier Modifier for the Canvas
- */
 @Composable
 fun GameCanvas(
     world: World,
-    renderSystem: RenderSystem,
+    renderSystem: Renderer,
     backgroundColor: Color = Color.Transparent,
     modifier: Modifier = Modifier
 ) {
diff --git a/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/RenderSystem.kt b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Renderer.kt
index 1d22ae6..57511f3 100644
--- a/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/RenderSystem.kt
+++ b/composeApp/src/commonMain/kotlin/coffee/liz/abstractionengine/game/Renderer.kt
@@ -1,7 +1,5 @@
 package coffee.liz.abstractionengine.game
 
-import androidx.compose.ui.geometry.Offset
-import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.graphics.drawscope.DrawScope
 import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.IntSize
@@ -12,6 +10,7 @@ import coffee.liz.ecs.animation.Animator
 import coffee.liz.ecs.animation.Position
 import coffee.liz.ecs.animation.SpriteSheet
 import kotlin.reflect.KClass
+import kotlin.time.Duration
 
 /**
  * System that renders sprites to a DrawScope.
@@ -21,17 +20,13 @@ import kotlin.reflect.KClass
  *
  * Depends on AnimationSystem to ensure animations are updated before rendering.
  */
-class RenderSystem(
+class Renderer(
     private val imageCache: ImageCache
 ) : System {
 
     override val dependencies: Set<KClass<out System>> = setOf(AnimationSystem::class)
 
-    /**
-     * The update method is required by the System interface, but rendering
-     * happens synchronously during Compose's draw phase via the render() method.
-     */
-    override fun update(world: World, deltaTime: Float) {
+    override fun update(world: World, duration: Duration) {
         // Rendering happens in render() method, not here
     }