void Update () {

        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);

        if (Input.GetMouseButtonUp (0))
        {
            if(Physics.Raycast (ray, out hit, 100))
            {
                if(hit.collider.tag == "Tile")
                {
                    print (hit.collider.transform);
                    player.target = hit.collider.transform;
                }
            }
        }

    }