// A world can be advanced without the players being advanced too. If this is the case
// then projectile collision boundaries are enlarged automatically to account for
// lack of knowledge about where players are
virtual public void Advance(List <WorldAction> actions, bool advancePlayers, bool spawnPowerups)
{
// Advance players
if (advancePlayers)
{
Player1.Advance(actions);
Player2.Advance(actions);
}
// Advance spawn timer and spawn powerups
if (spawnPowerups)
{
spawnTimer -= 1;
if (spawnTimer <= 0 && powerups.Count < 64)
{
Powerup.SpawnRandom(this);
spawnTimer = spawnTimerMax;
}
}
// Advance powerups
foreach (Powerup powerup in powerups)
{
powerup.Advance(null);
}
// Advance projectiles
int len = projectiles.Count;
for (int i = len - 1; i >= 0; i--)
{
Projectile projectile = projectiles[i];
if (projectile.Type == WeaponType.Minions)
{
// Destroy if marked for deletion with a HACK
if (projectile.Type == WeaponType.None)
{
destroyProjectile(projectile);
// Collide with all other projectiles (that are minions)
}
else if (i != 0)
{
for (int j = i - 1; j >= 0; j--)
{
Projectile other = projectiles[j];
bool didCollide = projectile.CollideWith(other);
if (didCollide)
{
// Destroy both parties involved
destroyProjectile(projectile);
other.Type = WeaponType.None; // Mark other for deletion
}
}
}
}
// In an AI situation, enlarge players
bool enlarge = advancePlayers == false;
projectile.Advance(null, enlarge);
}
postUpdate();
}