public void keyPressed(KeyEvent e) {
   int key = e.getKeyCode();
   for (Entity en : MarioBros.control.entity) {
     if (en.getId() == Id.Jugador) {
       switch (key) {
         case KeyEvent.VK_W:
           en.setVely(-4);
           if (!en.saltando) {
             en.saltando = true;
             en.gravedad = 5.0;
           }
           break;
         case KeyEvent.VK_A:
           en.setVelx(-5);
           en.caras = 1;
           break;
         case KeyEvent.VK_D:
           en.setVelx(5);
           en.caras = 0;
           break;
       }
     }
   }
 }
 public void keyReleased(KeyEvent e) {
   int key = e.getKeyCode();
   for (Entity en : MarioBros.control.entity) {
     if (en.getId() == Id.Jugador) {
       switch (key) {
         case KeyEvent.VK_W:
           en.setVely(0);
           break;
         case KeyEvent.VK_A:
           en.setVelx(0);
           break;
         case KeyEvent.VK_D:
           en.setVelx(0);
           break;
         case KeyEvent.VK_S:
           en.setVely(0);
           break;
       }
     }
   }
 }