// 事件要触发一定要记得调用Begin,否则OnUpdate不会结束
 public virtual void Begin()
 {
     status = AE_Status.E_RUNNING;
 }
 public void End()
 {
     status = AE_Status.E_FINISH;
 }
 public AsyncEventBase()
 {
     status = AE_Status.E_WAIT;
 }