public void handleDeath() {
        for (Iterator<NPC>    i = NPC.iterator();        i.hasNext();) if (i.next().getDeath()) i.remove();
        for (Iterator<Bullet> i = BulletAlly.iterator(); i.hasNext();) if (i.next().getDeath()) i.remove();
        for (Iterator<Bullet> i = BulletNPC.iterator();  i.hasNext();) if (i.next().getDeath()) i.remove();
        if (player.getDeath()) {SceneManager.Switch(new SceneGameOver());}
    }