@Override
public void objectCollision(Object entity1, Object entity2, double x, double y) {
if ((facade.isBullets(entity1) && !facade.isBullets(entity2))
|| (facade.isBullets(entity2) && !facade.isBullets(entity1))) {
game.getSound().play("explosion");
explosions.add(new Explosion(x, facade.getWorldHeight(world) - y));
}
}
