case SHOOTER_ENEMY:
enemy = new ShooterEnemy(x, y, -50f, BulletDirection.UP);
((ShooterEnemy) enemy).setEnemies(spriteManager.getEnemies());
break;
case STONE:
enemy = new Stone(x, y, -150f);
break;
case BIG_ENEMY:
enemy = new BigEnemy(x, y, -100f);
break;
case PURSUER_ENEMY: