public string ToTextBoard()
{
var sb = new StringBuilder();
for (var rank = 7; rank >= 0; rank--)
{
for (var file = 0; file < 8; file++)
{
var loc = BoardLocation.At(file + 1, rank + 1);
var entity = GetItem(loc)?.Item;
char chr;
if (entity == null)
{
chr = '.';
}
else
{
chr = ChessPieceNameMapper.ToChar(entity.EntityType, entity.Owner);
var epY = char.IsUpper(chr) ? 5 : 4;
if (chr == 'p' || chr == 'P' && loc.Y == epY && entity.LocationHistory.Count() == 2)
{
chr = chr == 'p' ? 'e' : 'E';
}
}
sb.Append(chr == '\0' ? '.' : chr);
}
sb.AppendLine();
}
return(sb.ToString());
}
public void SetupPieces(BoardEngine <ChessPieceEntity> engine)
{
for (var rank = 7; rank >= 0; rank--)
{
for (var file = 0; file < 8; file++)
{
var chr = _board[file, rank];
if (_chessPieceEntityFactory.ValidPieces.Contains(chr.ToString().ToUpper()))
{
var entity = _chessPieceEntityFactory.Create(
ChessPieceNameMapper.FromChar(chr),
char.IsUpper(chr) ? Colours.White : Colours.Black
);
var location = BoardLocation.At(file + 1, rank + 1);
engine.AddPiece(entity, location);
if (chr.ToString().ToUpper() == "E")
{
((PawnEntity)entity).TwoStep = true;
}
}
else if (chr != ' ' && chr != '.' && chr != '\0')
{
Throw.InvalidPiece(chr);
}
}
}
}
private string buildExtra(ChessPieceName?promotionPiece)
{
if (promotionPiece.HasValue)
{
return
($"{SanTokenParser.PromoteNotator.ToString()}{ChessPieceNameMapper.ToChar(promotionPiece.Value, Colours.White)}");
}
return(string.Empty);
}
private IEnumerable <char> ParseFirstToken(string notation)
{
var tokens = notation;
var firstChar = notation[0];
var firstCharTokenType = _sanTokenParser.GetTokenType(firstChar);
if (firstCharTokenType == SanTokenTypes.Piece)
{
WithPiece(ChessPieceNameMapper.FromChar(firstChar));
tokens = notation.Substring(1);
}
else if (firstCharTokenType != SanTokenTypes.File &&
firstCharTokenType != SanTokenTypes.Rank)
{
Throw.InvalidSan($"Unexpected token in first character '{firstChar}'");
}
return(tokens);
}
private void WithPromotionPiece(char c) => _promotionPiece = ChessPieceNameMapper.FromChar(c);
