int floorMask; // 自动寻路层void Awake(){    floorMask = LayerMask.NameToLayer("Floor");} void Turning(){    Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);    RaycastHit floorHit;    if (Physics.Raycast(camRay, out floorHit, floorMask))    {        Vector3 playerToMouse = floorHit.point - transform.position;        playerToMouse.y = 0;        Quaternion newRotation = Quaternion.LookRotation(playerToMouse);        playerRigidbody.MoveRotation(newRotation);    }}