static void GetAllWords(Tile[] tiles, int index, TileWord candidate, List <TileWord> words)
{
if (!SubWordSet.Contains(candidate.Word))
{
return;
}
tiles[index].IsTaken = true;
if (WordSet.Contains(candidate.Word))
{
words.Add(candidate);
}
for (int i = 0; i < 8; i++)
{
var row = index / 4 + (int)Math.Round(Math.Sin(Math.PI / 4 * (i - 2)));
var col = index % 4 + (int)Math.Round(Math.Sin(Math.PI / 4 * i));
if (row >= 0 && row < 4 && col >= 0 && col < 4 && !tiles[row * 4 + col].IsTaken)
{
GetAllWords(tiles, row * 4 + col, candidate.Add(tiles[row * 4 + col]), words);
}
}
tiles[index].IsTaken = false;
}
public TileWord Add(Tile tile)
{
var result = new TileWord(this);
result.Tiles.Add(tile);
result.Word += tile.Letter;
return(result);
}
public TileWord(TileWord tileWord)
{
Word = tileWord.Word;
Tiles = new List <Tile>();
foreach (var tile in tileWord.Tiles)
{
Tiles.Add(tile);
}
}
