/* Build a single road segment. Return -1 on fail, 0 on successful
* construction, and 1 if this segment completed the path. */
public int BuildRoadSegment(Direction direction, bool roadEndsThere)
{
if (!buildingRoad.Extendable)
{
// Max length reached
return(-1);
}
buildingRoad.Cost += Pathfinder.ActualCost(Game.Map, buildingRoad.EndPosition, direction);
AddBuildingRoadSegment(buildingRoad.EndPosition, direction);
buildingRoad.Extend(Game.Map, direction);
MapPos destination = 0;
bool water = false;
int result = Game.CanBuildRoad(buildingRoad, player, ref destination, ref water, roadEndsThere);
if (result <= 0)
{
// Invalid construction, undo.
return(RemoveRoadSegment());
}
if (Game.Map.GetObject(destination) == Map.Object.Flag)
{
// Existing flag at destination, try to connect.
if (!Game.BuildRoad(buildingRoad.Copy(), player, true))
{
BuildRoadEnd();
return(-1);
}
else
{
BuildRoadEnd();
UpdateMapCursorPosition(destination);
return(1);
}
}
else if (Game.Map.Paths(destination) == 0)
{
// No existing paths at destination, build segment.
UpdateMapCursorPosition(destination);
if (GetConfig(6)) // pathway scrolling
{
Viewport.MoveToMapPosition(destination, true);
}
}
else
{
// TODO fast split path and connect on double click
return(-1);
}
return(0);
}
