public RoadPiece[] getRoad(Level level)
{
Vector2 start = level.getStart();
Vector2 end = level.getFinish();
if (level.getPos(start) != null || level.getPos(end) != null)
{
return(null);
}
List <Vector2> previous = new List <Vector2>();
while (true)
{
previous.Add(start);
if (start.x == end.x && start.y == end.y)
{
return(makeRoadPieces(ref previous));
}
Vector2[] neighbors = getNeighbors(level, start, ref previous);
if (neighbors.Length != 1)
{
return(null);
}
start = neighbors[0];
}
}
private void displayRoadPoints()
{
placeRoad(VectorCalculation.revertToOrigin(level.getFinish(), level));
placeRoad(VectorCalculation.revertToOrigin(level.getStart(), level));
}