void Update()
{
if (Input.GetMouseButtonDown(0))
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hitInfo;
if (Physics.Raycast(ray, out hitInfo))
{
GameObject gameObj = hitInfo.collider.gameObject;
if (gameObj.tag == "map")//当射线碰撞目标为boot类型的物品 ，执行拾取操作
{
Debug.Log(XmlLoader.GetDescribeByName(gameObj.name));
}
}
}
}