Pair <CPos, SubCell>?PopPath(Actor self)
{
if (path.Count == 0)
{
return(null);
}
var nextCell = path[path.Count - 1];
// Something else might have moved us, so the path is no longer valid.
if (!Util.AreAdjacentCells(mobile.ToCell, nextCell))
{
path = EvalPath(BlockedByActor.Immovable);
return(null);
}
var containsTemporaryBlocker = WorldUtils.ContainsTemporaryBlocker(self.World, nextCell, self);
// Next cell in the move is blocked by another actor
if (containsTemporaryBlocker || !mobile.CanEnterCell(nextCell, ignoreActor))
{
// Are we close enough?
var cellRange = nearEnough.Length / 1024;
if (!containsTemporaryBlocker && (mobile.ToCell - destination.Value).LengthSquared <= cellRange * cellRange && mobile.CanStayInCell(mobile.ToCell))
{
// Apply some simple checks to avoid giving up in cases where we can be confident that
// nudging/waiting/repathing should produce better results.
// Avoid fighting over the destination cell
if (path.Count < 2)
{
path.Clear();
return(null);
}
// We can reasonably assume that the blocker is friendly and has a similar locomotor type.
// If there is a free cell next to the blocker that is a similar or closer distance to the
// destination then we can probably nudge or path around it.
var blockerDistSq = (nextCell - destination.Value).LengthSquared;
var nudgeOrRepath = CVec.Directions
.Select(d => nextCell + d)
.Any(c => c != self.Location && (c - destination.Value).LengthSquared <= blockerDistSq && mobile.CanEnterCell(c, ignoreActor));
if (!nudgeOrRepath)
{
path.Clear();
return(null);
}
}
// There is no point in waiting for the other actor to move if it is incapable of moving.
if (!mobile.CanEnterCell(nextCell, ignoreActor, BlockedByActor.Immovable))
{
path = EvalPath(BlockedByActor.Immovable);
return(null);
}
// See if they will move
self.NotifyBlocker(nextCell);
// Wait a bit to see if they leave
if (!hasWaited)
{
waitTicksRemaining = mobile.Info.LocomotorInfo.WaitAverage;
hasWaited = true;
return(null);
}
if (--waitTicksRemaining >= 0)
{
return(null);
}
hasWaited = false;
// If the blocking actors are already leaving, wait a little longer instead of repathing
if (CellIsEvacuating(self, nextCell))
{
return(null);
}
// Calculate a new path
mobile.RemoveInfluence();
var newPath = EvalPath(BlockedByActor.All);
mobile.AddInfluence();
if (newPath.Count != 0)
{
path = newPath;
var newCell = path[path.Count - 1];
path.RemoveAt(path.Count - 1);
return(Pair.New(newCell, mobile.GetAvailableSubCell(nextCell, mobile.FromSubCell, ignoreActor)));
}
else if (mobile.IsBlocking)
{
// If there is no way around the blocker and blocker will not move and we are blocking others, back up to let others pass.
var newCell = mobile.GetAdjacentCell(nextCell);
if (newCell != null)
{
if ((nextCell - newCell).Value.LengthSquared > 2)
{
path.Add(mobile.ToCell);
}
return(Pair.New(newCell.Value, mobile.GetAvailableSubCell(newCell.Value, mobile.FromSubCell, ignoreActor)));
}
}
return(null);
}
hasWaited = false;
path.RemoveAt(path.Count - 1);
return(Pair.New(nextCell, mobile.GetAvailableSubCell(nextCell, mobile.FromSubCell, ignoreActor)));
}
Pair <CPos, SubCell>?PopPath(Actor self)
{
if (path.Count == 0)
{
return(null);
}
var nextCell = path[path.Count - 1];
var containsTemporaryBlocker = WorldUtils.ContainsTemporaryBlocker(self.World, nextCell, self);
//Next cell in the move is blocked by another actor.
if (containsTemporaryBlocker || !mobile.CanEnterCell(nextCell, ignoreActor, true))
{
//Are we close enough?
var cellRange = nearEnough.Length / 1024;
if (!containsTemporaryBlocker && (mobile.ToCell - destination.Value).LengthSquard <= cellRange * cellRange)
{
path.Clear();
return(null);
}
//See if they will move
if (!hasNotifiedBlocker)
{
self.NotifyBlocker(nextCell);
hasNotifiedBlocker = true;
}
//Wait a bit to see if they leave
if (!hasWaited)
{
waitTicksRemaining = mobile.Info.WaitAverage + self.World.SharedRandom.Next(-mobile.Info.WaitSpread, mobile.Info.WaitSpread);
hasWaited = true;
}
if (--waitTicksRemaining >= 0)
{
return(null);
}
if (mobile.TicksBeforePathing > 0)
{
mobile.TicksBeforePathing--;
return(null);
}
//Calculate a new path
mobile.RemoveInfluence();
var newPath = EvalPath();
mobile.AddInfluence();
if (newPath.Count != 0)
{
path = newPath;
}
return(null);
}
hasNotifiedBlocker = false;
hasWaited = false;
path.RemoveAt(path.Count - 1);
var subCell = mobile.GetAvailableSubCell(nextCell, SubCell.Any, ignoreActor);
return(Pair.New(nextCell, subCell));
}
Pair <CPos, SubCell>?PopPath(Actor self)
{
if (path.Count == 0)
{
return(null);
}
var nextCell = path[path.Count - 1];
// Something else might have moved us, so the path is no longer valid.
if (!Util.AreAdjacentCells(mobile.ToCell, nextCell))
{
path = EvalPath(BlockedByActor.Immovable);
return(null);
}
var containsTemporaryBlocker = WorldUtils.ContainsTemporaryBlocker(self.World, nextCell, self);
// Next cell in the move is blocked by another actor
if (containsTemporaryBlocker || !mobile.CanEnterCell(nextCell, ignoreActor))
{
// Are we close enough?
var cellRange = nearEnough.Length / 1024;
if (!containsTemporaryBlocker && (mobile.ToCell - destination.Value).LengthSquared <= cellRange * cellRange)
{
path.Clear();
return(null);
}
// There is no point in waiting for the other actor to move if it is incapable of moving.
if (!mobile.CanEnterCell(nextCell, ignoreActor, BlockedByActor.Immovable))
{
path = EvalPath(BlockedByActor.Immovable);
return(null);
}
// See if they will move
self.NotifyBlocker(nextCell);
// Wait a bit to see if they leave
if (!hasWaited)
{
waitTicksRemaining = mobile.Info.LocomotorInfo.WaitAverage;
hasWaited = true;
return(null);
}
if (--waitTicksRemaining >= 0)
{
return(null);
}
hasWaited = false;
// If the blocking actors are already leaving, wait a little longer instead of repathing
if (CellIsEvacuating(self, nextCell))
{
return(null);
}
// Calculate a new path
mobile.RemoveInfluence();
var newPath = EvalPath(BlockedByActor.All);
mobile.AddInfluence();
if (newPath.Count != 0)
{
path = newPath;
var newCell = path[path.Count - 1];
path.RemoveAt(path.Count - 1);
return(Pair.New(newCell, mobile.GetAvailableSubCell(nextCell, SubCell.Any, ignoreActor)));
}
else if (mobile.IsBlocking)
{
// If there is no way around the blocker and blocker will not move and we are blocking others, back up to let others pass.
var newCell = mobile.GetAdjacentCell(nextCell);
if (newCell != null)
{
if ((nextCell - newCell).Value.LengthSquared > 2)
{
path.Add(mobile.ToCell);
}
return(Pair.New(newCell.Value, mobile.GetAvailableSubCell(newCell.Value, SubCell.Any, ignoreActor)));
}
}
return(null);
}
hasWaited = false;
path.RemoveAt(path.Count - 1);
return(Pair.New(nextCell, mobile.GetAvailableSubCell(nextCell, SubCell.Any, ignoreActor)));
}
