内置tween管理器

source/src/Tween/PropertyTweens.ts

@@ -0,0 +1,44 @@
+module es {
+    /**
+     * 通用ITweenTarget用于所有属性tweens。
+     */
+    class PropertyTarget<T> implements ITweenTarget<T> {
+        protected _target;
+        protected _propertyName;
+
+        constructor(target, propertyName: string) {
+            this._target = target;
+            this._propertyName = propertyName;
+        }
+
+        public getTargetObject() {
+            return this._target;
+        }
+
+        public setTweenedValue(value: T) {
+            this._target[this._propertyName] = value;
+        }
+
+        public getTweenedValue(): T {
+            return this._target[this._propertyName];
+        }
+    }
+
+    export class PropertyTweens {
+        public static NumberPropertyTo(self, memberName: string, to: number, duration: number): ITween<number> {
+            let tweenTarget = new PropertyTarget<number>(self, memberName);
+            let tween = TweenManager.cacheNumberTweens ? Pool.obtain<NumberTween>(NumberTween) : new NumberTween();
+            tween.initialize(tweenTarget, to, duration);
+
+            return tween;
+        }
+
+        public static Vector2PropertyTo(self, memeberName: string, to: Vector2, duration: number): ITween<Vector2> {
+            let tweenTarget = new PropertyTarget<Vector2>(self, memeberName);
+            let tween = TweenManager.cacheVector2Tweens ? Pool.obtain<Vector2Tween>(Vector2Tween) : new Vector2Tween();
+            tween.initialize(tweenTarget, to, duration);
+
+            return tween;
+        }
+    }
+}