Factor out AnimatableTile{Factory}

js/simple_tile.js

@@ -1,19 +1,9 @@
-import { Tile } from './tile.js';
-export class SimpleTile extends Tile {
+import { AnimatableTile } from './animatable_tile.js';
+export class SimpleTile extends AnimatableTile {
     constructor(width, height, image_url, animations) {
-        super(width, height);
+        super(width, height, animations);
         this.elem.style.backgroundImage = `url('${encodeURIComponent(image_url)}')`;
         this.elem.style.backgroundSize = 'cover';
-        this.animations = animations;
-    }
-    play(name) {
-        const animation = this.animations.get(name);
-        if (animation) {
-            return this.elem.animate(...animation);
-        }
-        else {
-            return undefined;
-        }
     }
 }
 //# sourceMappingURL=simple_tile.js.map