private static void CollidePlayerBullet(PlayerVerticalShooter player, EnemyBullet bullet)
{
player.InflictDamage(bullet);
bullet.InflictDamage(player);
}
private static void CollideBulletAlly(EnemyBullet bullet, AlliedShip ally)
{
bullet.InflictDamage(ally);
ally.InflictDamage(bullet);
}