protected override int PerformInternal()
{
//lock is done already
if (Block.Undefined == _prevBlock) //created out of bounds, dont continue
{
return(0);
}
//fix for portal gun
if (_owner.orangePortal.Count > 0)
{
if (_pos == _owner.orangePortal[0] || _pos == _owner.orangePortal[1])
{
return(0);
}
}
if (_owner.bluePortal.Count > 0)
{
if (_pos == _owner.bluePortal[0] || _pos == _owner.bluePortal[1])
{
return(0);
}
}
//delete at the previous position, restore water unconditionally, lava only when bullet is still there to prevent restoration of explosion lava
if (_prevBlock != Block.Water)
{
_prevBlock = _map.GetBlock(_pos) == _block ? //is the bullet still here
(_prevBlock == Block.Lava ? Block.Lava : Block.Air) //yes, then either restore lava or set air
: Block.Undefined; //no, it was removed by some other process, do nothing then
}
if (Block.Undefined != _prevBlock)
{
UpdateMap(new BlockUpdate(null, _pos, _prevBlock));
}
List <BlockUpdate> updates = new List <BlockUpdate>();
for (int i = 0; i < _behavior.MovesPerProcessingStep && _restDistance > 0; ++i)
{
_pos = Move();
_prevBlock = _map.GetBlock(_pos);
if (Block.Undefined == _prevBlock)
{
_restDistance = 0;
break;
}
_behavior.ModifyDirection(ref _direction, _prevBlock); //e.g. if you want it to be dependent on gravity or change direction depending on current block etc
if (_behavior.VisitBlock(_world, _pos, _prevBlock, _owner, ref _restDistance, updates, _block) && _behavior.CanKillPlayer)
{
CheckHitPlayers(updates);
}
}
bool cont = _restDistance > 0;
if (cont) //check if the last update was for the current position and replace it with the particle
{
int idx = updates.Count - 1;
if (idx >= 0 && updates[idx].X == _pos.X &&
updates[idx].Y == _pos.Y &&
updates[idx].Z == _pos.Z)
{
updates[idx] = new BlockUpdate(null, _pos, _block);
}
else
{
updates.Add(new BlockUpdate(null, _pos, _block));
}
}
for (int i = 0; i < updates.Count; ++i)
{
UpdateMap(updates[i]);
}
return(cont ? _stepDelay : 0);
}
