public IEnumerable <PlayedWordLetter> BeforeWordTiles(Func <int, int, char> boardTileGetter)
{
int y = minY - 1;
bool atEdge = y < 0;
char nextChar;
while (!atEdge && (nextChar = boardTileGetter(x, y)) != ' ')
{
// Don't include multipliers on letters before/after what the user played
yield return(PlayedWordLetter.Create(nextChar));
y--;
atEdge = y < 0;
}
}
public IEnumerable <PlayedWordLetter> AfterWordTiles(Func <int, int, char> boardTileGetter)
{
int y = maxY + 1;
bool atEdge = y >= GameBase.BOARD_WIDTH;
char nextChar;
while (!atEdge && (nextChar = boardTileGetter(x, y)) != ' ')
{
// Don't include multipliers on letters before/after what the user played
yield return(PlayedWordLetter.Create(nextChar));
y++;
atEdge = y >= GameBase.BOARD_WIDTH;
}
}
public IEnumerable <PlayedWordLetter> WordTiles(Func <int, int, char> userTileGetter, Func <int, int, char> boardTileGetter)
{
for (int y = minY; y <= maxY; y++)
{
char tile = boardTileGetter(x, y);
if (tile == ' ')
{
// The board has no tile here, so the user must be playing
// in this space. Include the multiplier from the board
yield return(PlayedWordLetter.CreateWithBoardMultiplier(userTileGetter(x, y), x, y));
}
else
{
// The board has a tile here already, so multipliers aren't used
yield return(PlayedWordLetter.Create(tile));
}
}
}