public static void TrocarCena(int cena)
 {
     switch (cena)
     {
         case 0:
             {
                 SceneManager.cena = new Level();
                 cenaAtual = CENA.CENA_LEVEL;
                 break;
             }
         case 1:
             {
                 SceneManager.cena = new GameOver();
                 cenaAtual = CENA.CENA_GAMEOVER;
                 break;
             }
         case 2:
             {
                 SceneManager.cena = new Opening();
                 cenaAtual = CENA.CENA_ABERTURA;
                 break;
             }
     }
 }
 public static void Setup()
 {
     textScene = "Opening's Scene";
     SceneManager.cena = new Opening();
     cenaAtual = CENA.CENA_ABERTURA;
 }