@Override
    public void processKeyReleased(KeyEvent e){
        if(e.getKeyCode() == KeyEvent.VK_LEFT){
           player.setLeft(false);
           mountains.setVector(0,0);
       }
       if(e.getKeyCode() == KeyEvent.VK_RIGHT){
           player.setRight(false);
           mountains.setVector(0,0);
       }
        if(e.getKeyCode() == KeyEvent.VK_UP)
            player.setUp(false);
        if(e.getKeyCode() == KeyEvent.VK_DOWN)
            player.setDown(false);       
    }