 			state = createState(IdleState);
 		}
 
+		/**
+		 * 如果 _state 实现了 IAnimatable，该值为 _state，否则为 null
+		 */
+		private var stateAnimatable:IAnimatable;
+
 		private var _state:AbstractObjectState;
 
 		/**

					_state.cancel();
				}
				_state = value;

				if (_state)
				{

		}

		/**
		 * 从 JSON 导入数据
		 * @param raw
		 *
		 */
