Create onFinish Animation hook

api/src/main/java/com/bartlomiejpluta/base/api/game/animation/Animation.java

@@ -30,6 +30,8 @@ public interface Animation extends Placeable, Movable, Renderable, Updatable {
 
    void onAdd(Layer layer);
 
+   void onFinish(Layer layer);
+
    void finish();
 
    boolean finished();

api/src/main/java/com/bartlomiejpluta/base/api/game/animation/AnimationDelegate.java

@@ -174,6 +174,11 @@ public abstract class AnimationDelegate implements Animation {
       animation.onAdd(layer);
    }
 
+   @Override
+   public void onFinish(Layer layer) {
+      animation.onFinish(layer);
+   }
+
    @Override
    public void finish() {
       animation.finish();

engine/src/main/java/com/bartlomiejpluta/base/engine/world/animation/model/DefaultAnimation.java

@@ -99,6 +99,11 @@ public class DefaultAnimation extends MovableSprite implements Animation {
       this.isObjectLayer = layer instanceof ObjectLayer;
    }
 
+   @Override
+   public void onFinish(Layer layer) {
+      // do nothing
+   }
+
    @Override
    public void finish() {
       this.forcedFinish = true;

engine/src/main/java/com/bartlomiejpluta/base/engine/world/map/layer/base/BaseLayer.java

@@ -48,6 +48,7 @@ public abstract class BaseLayer implements Layer, Updatable {
 
          if (animation.finished()) {
             iterator.remove();
+            animation.onFinish(this);
          }
       }
    }