if (AlienBonusShip.getBonusAlienCount() > 0) {
return;
}
millisToNextBonus -= delta;
if (millisToNextBonus <= 0) {
BaseEntity bounusAlien = new AlienBonusShip(
this, 50, 50,
0.1f + randomGenerator.nextFloat() * 0.05f);
this.resetBonusTimer();
this.addEntity(bounusAlien);
}