public void buttonRestart()
    {
        if (controller == null)
        {
            controller = GameObject.FindGameObjectWithTag("GameController");
            script     = controller.GetComponent("ControleDeFases") as ControleDeFases;
        }

        canvas.gameObject.SetActive(true);
        script.onPause();
        Time.timeScale = 0;
    }
 void OnMouseDown()
 {
     canvas.gameObject.SetActive(true);
     controle.onPause();
     Time.timeScale = 0;
 }