public override bool Init()
		{
			//新的层
			Layer l = new Layer();


			//层添加到场景
			addLayer(l);
			return true;
		}
		/// <summary>
		/// 向场景中添加层
		/// </summary>
		/// <param name="layer">指定要添加的层</param>
		/// <returns>是否正常添加</returns>
		public bool addLayer(Layer layer)
		{
			bool flag = true;

			if (!arrLayer.Contains(layer))
			{
				arrLayer.Add(layer);
			}
			else
			{
				flag = false;
			}

			return flag;
		}