private bool ValidateEndState(FluidRouteState state, HashSet <RoutingCoordinate> destinations)
{
if (state.Depth != Depth.None)
{
return(false);
}
if (state.Building.Building.Name != "pipe")
{
return(false);
}
bool found = false;
BuildingRotation[] rotations = new BuildingRotation[] { BuildingRotation.North, BuildingRotation.East, BuildingRotation.South, BuildingRotation.West };
foreach (var rotation in rotations)
{
if (destinations.Where((d) => d.Position == state.Position + rotation.ToVector()).Any())
{
found = true;
}
}
if (!found)
{
return(false);
}
return(true);
}
public Searchspace Route(ItemAmount item, Searchspace space, IEnumerable <RoutingCoordinate> sources, IEnumerable <RoutingCoordinate> destinations)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
if (destinations == null)
{
throw new ArgumentNullException("destinations");
}
AStar <FluidRouteState> star = new AStar <FluidRouteState>();
star.StateGenerator = (s) => s.NextStates(Grader.CostForBuilding, PipeToGround, Pipe);
star.EndStateValidator = ValidateEndState;
foreach (var dest in destinations)
{
star.AddDestination(new RoutingCoordinate(dest.Position, dest.State, dest.Rotation.Invert()));
}
foreach (var source in sources)
{
var startBuilding = new VirtualFlowStep(item, PipeToGround, source.Position, source.Rotation.Invert());
var startState = new FluidRouteState(startBuilding, 0, source.Position, space, Depth.None, source.Rotation, true);
star.AddState(startState);
}
while (!star.Step())
{
}
return(star.EndState.Space);
}