[animate] update

src/main/hw/animate/FadeAnimate.hx

@@ -2,19 +2,21 @@ package hw.animate;
 
 import hw.animate.Animate;
 import hw.animate.IAnimate;
+import promhx.Promise;
 
 class FadeAnimate extends Animate {
 
-    override public function start(callback:IAnimate -> Void, custom:Bool = false):Void {
+    override public function start():Promise<IAnimate> {
         object.alpha = 1.0;
-        super.start(callback, custom);
+        return super.start();
     }
 
-    override private function update(time:Float):Void {
-        super.update(time);
+    override public function update(time:Float):Bool {
+        var result = super.update(time);
         object.alpha = 1 - (progress * 1.0);
         if (progress >= 1) {
             object.alpha = 0.0;
         }
+        return result;
     }
 }