protected virtual string GetSanForMove(Move move, Piece movingPiece, bool isCapture, CastlingType castle, List <Position> ambiguities)
{
if (castle == CastlingType.KingSide)
{
return("O-O");
}
if (castle == CastlingType.QueenSide)
{
return("O-O-O");
}
bool needsUnambigFile = false;
bool needsUnambigRank = false;
if (ambiguities.Count > 0)
{
foreach (Position amb in ambiguities)
{
if (amb.Rank == move.OriginalPosition.Rank)
{
needsUnambigFile = true;
}
if (amb.File == move.OriginalPosition.File)
{
needsUnambigRank = true;
}
}
if (!needsUnambigFile && !needsUnambigRank)
{
needsUnambigFile = true;
}
}
StringBuilder sanBuilder = new StringBuilder();
if (!(movingPiece is Pawn))
{
sanBuilder.Append(char.ToUpperInvariant(movingPiece.GetFenCharacter()));
}
else if (isCapture)
{
sanBuilder.Append(move.OriginalPosition.File.ToString().ToLowerInvariant());
needsUnambigFile = false;
needsUnambigRank = false;
}
if (needsUnambigFile)
{
sanBuilder.Append(move.OriginalPosition.File.ToString().ToLowerInvariant());
}
if (needsUnambigRank)
{
sanBuilder.Append(move.OriginalPosition.Rank.ToString());
}
if (isCapture)
{
sanBuilder.Append("x");
}
sanBuilder.Append(move.NewPosition.ToString().ToLowerInvariant());
if (move.Promotion.HasValue)
{
sanBuilder.Append("=");
sanBuilder.Append(move.Promotion.Value);
}
if (IsWinner(ChessUtilities.GetOpponentOf(WhoseTurn)))
{
sanBuilder.Append("#");
}
else if (IsInCheck(WhoseTurn))
{
sanBuilder.Append("+");
}
return(sanBuilder.ToString());
}
/// <summary>
/// 生成 SAN 字符串。
/// </summary>
/// <param name="gameBeforeTheMove"></param>
/// <returns></returns>
public string GenerateSANString(ChessGame gameBeforeTheMove)
{
string SANResult;
if (Castling.Equals(CastlingType.KingSide))
{
SANResult = "O-O";
}
else if (Castling.Equals(CastlingType.QueenSide))
{
SANResult = "O-O-O";
}
else
{
var sb = new System.Text.StringBuilder();
if (!(Piece is Pieces.Pawn))
{
sb.Append(char.ToUpper(Piece.GetFenCharacter()));
}
Piece[][] board = gameBeforeTheMove.GetBoard();
List<Move> validMoves = new List<Move>();
for (int r = 0; r < 8; r++)
{
for (int f = 0; f < 8; f++)
{
if (board[r][f] != Piece) continue;
Move m = new Move(new Position((File)f, 8 - r), this.NewPosition, this.Player, this.Promotion);
if (gameBeforeTheMove.IsValidMove(m))
{
validMoves.Add(m);
}
}
}
if (validMoves.Count == 0) throw new PgnException("This move " + this.ToString() + " is not valid for gameBeforeTheMove.");
else if (validMoves.Count > 1)
{
bool fileUnique = true;
bool rankUnique = true;
foreach (var move in validMoves)
{
if(!(move.OriginalPosition.Equals(this.OriginalPosition)))
{
if (move.OriginalPosition.File == this.OriginalPosition.File)
{
fileUnique = false;
}
if (move.OriginalPosition.Rank == this.OriginalPosition.Rank)
{
rankUnique = false;
}
}
}
if (fileUnique)
sb.Append((char)((int)'a' + (int)this.OriginalPosition.File));
else if (rankUnique)
sb.Append(this.OriginalPosition.Rank.ToString());
else
{
sb.Append((char)((int)'a' + (int)this.OriginalPosition.File));
sb.Append(this.OriginalPosition.Rank.ToString());
}
}
if (IsCapture)
sb.Append("x");
sb.Append(this.NewPosition.ToString().ToLower());
if (Promotion.HasValue)
{
sb.Append("=");
sb.Append(Promotion.Value);
}
if (IsCheckmate.HasValue && IsCheckmate.Value)
{
sb.Append("#");
}
else if (IsChecking.HasValue && IsChecking.Value)
{
sb.Append("+");
}
SANResult = sb.ToString();
}
try
{
ChessDotNet.PgnMoveReader.ParseMove(SANResult, Player, gameBeforeTheMove);
}
catch (PgnException)
{
throw new System.ArgumentException("This move " + SANResult + " is not valid for gameBeforeTheMove.");
}
catch (System.ArgumentException)
{
throw new System.ArgumentException("This move " + SANResult + " is not valid for gameBeforeTheMove.");
}
this._storedSANString = SANResult;
return SANResult;
}