void Start()
    {
        points = new Vector3[2];

        //set the start point of the linerenderer to the position of the gameObject.
        points[0] = Vector3.zero;

        //set the end point 20 units away from the GO on the Z axis (pointing forward)
        points[1] = transform.position + new Vector3(0, 0, 20);

        //finally set the positions array on the LineRenderer to our new values
        lineRenderer.SetPositions(points);
        lineRenderer.enabled  = true;
        lineRenderer.material = new Material(Shader.Find("Sprites/Default"));

        control = GetComponent <MineSweeperControl>();
    }
 void Start()
 {
     control = GetComponent <MineSweeperControl>();
 }