Example #1
0
    private Path CreatePath(Tile start, Tile end)
    {
        Path           path    = new Path();
        List <Tile>    toCheck = new List <Tile>();
        HashSet <Tile> ignore  = new HashSet <Tile>();

        foreach (var tile in vectorsToTiles.Values)
        {
            tile.Clear();
        }

        Tile currentTile = start;

        toCheck.Add(currentTile);

        while (toCheck.Count != 0)
        {
            currentTile = GetTileWithLowestF(toCheck);
            if (currentTile == end)
            {
                break;
            }

            toCheck.Remove(currentTile);
            ignore.Add(currentTile);

            foreach (var neighbour in CheckNeighboursPath(currentTile))
            {
                if (!ignore.Contains(neighbour))
                {
                    if (!toCheck.Contains(neighbour))
                    {
                        toCheck.Add(neighbour);
                        neighbour.SetParent(currentTile);
                    }
                    else if (currentTile.G + neighbour.Difficulty < neighbour.G)
                    {
                        neighbour.SetParent(currentTile);
                    }
                }
            }
        }


        while (currentTile != start)
        {
            path.AddPath(currentTile);
            currentTile = currentTile.Parent;
        }
        path.AddPath(currentTile);
        path.ActualPath();
        return(path);
    }