修复Vector2.zero引起的引用混乱问题

source/src/Utils/Timers/TimerManager.ts

@@ -0,0 +1,32 @@
+module es {
+    /**
+     * 允许动作的延迟和重复执行
+     */
+    export class TimerManager extends GlobalManager {
+        public _timers: Timer[] = [];
+
+        public update() {
+            for (let i = this._timers.length - 1; i >= 0; i --){
+                if (this._timers[i].tick()){
+                    this._timers[i].unload();
+                    this._timers.removeAt(i);
+                }
+            }
+        }
+
+        /**
+         * 调度一个一次性或重复的计时器，该计时器将调用已传递的动作
+         * @param timeInSeconds
+         * @param repeats
+         * @param context
+         * @param onTime
+         */
+        public schedule(timeInSeconds: number, repeats: boolean, context: any, onTime: (timer: ITimer)=>void){
+            let timer = new Timer();
+            timer.initialize(timeInSeconds, repeats, context, onTime);
+            this._timers.push(timer);
+
+            return timer;
+        }
+    }
+}