Add support for simple periodic sprite animations

src/controller/gamecontext.ts

@@ -19,19 +19,22 @@ export class GameContext implements CollidableGroup {
 		const map = this.loadMap(renderer, 'test');
 		const loadPlayer = EntityContext.load(renderer, 'green_circle');
 		const loadEntity = EntityContext.load(renderer, 'red_circle');
+		const loadEntity2 = EntityContext.load(renderer, 'square');
 
 		const [mapView, mapCollision] = await map;
 		const player = await loadPlayer;
 		const entity = await loadEntity;
+		const entity2 = await loadEntity2;
 
 		vec2.set(player.pos, 6, 6);
 		vec2.set(entity.pos, 3, 3);
+		vec2.set(entity2.pos, 3, 8);
 
 		return new GameContext(
 			renderer,
 			mapView,
 			player,
-			[entity],
+			[entity, entity2],
 			mapCollision,
 		);
 	}
@@ -168,7 +171,7 @@ export class GameContext implements CollidableGroup {
 		this.mapView.render();
 
 		for (const r of [...this.entities, this.player])
-			r.render();
+			r.render(time);
 
 		window.requestAnimationFrame(this.render);
 	}