| public static GetOpponentOf ( Player player ) : Player | ||
| player | Player | |
| return | Player | |
GameStatus CalculateStatus(Player playerToValidate, bool validateHasAnyValidMoves)
{
if (_drawn)
{
return(new GameStatus(GameEvent.Draw, Player.None, _drawReason));
}
if (_resigned != Player.None)
{
return(new GameStatus(GameEvent.Resign, _resigned, _resigned + " resigned"));
}
var other = ChessUtilities.GetOpponentOf(playerToValidate);
if (IsInCheck(playerToValidate))
{
if (validateHasAnyValidMoves && !HasAnyValidMoves(playerToValidate))
{
return(new GameStatus(GameEvent.Checkmate, other, playerToValidate + " is checkmated"));
}
return(new GameStatus(GameEvent.Check, other, playerToValidate + " is in check"));
}
if (validateHasAnyValidMoves && !HasAnyValidMoves(playerToValidate))
{
return(new GameStatus(GameEvent.Stalemate, other, "Stalemate"));
}
return(new GameStatus(GameEvent.None, Player.None, "No special event"));
}
void UseGameCreationData(GameCreationData data)
{
Board = CloneBoard(data.Board);
WhoseTurn = data.WhoseTurn;
Piece e1 = GetPieceAt(File.E, 1);
Piece e8 = GetPieceAt(File.E, 8);
Piece a1 = GetPieceAt(File.A, 1);
Piece h1 = GetPieceAt(File.H, 1);
Piece a8 = GetPieceAt(File.A, 8);
Piece h8 = GetPieceAt(File.H, 8);
_whiteKingMoved |= (!(e1 is King) || e1.Owner != Player.White);
_blackKingMoved |= (!(e8 is King) || e8.Owner != Player.Black);
_whiteRookAMoved |= (!(a1 is Rook) || a1.Owner != Player.White || !data.CanWhiteCastleQueenSide);
_whiteRookHMoved |= (!(h1 is Rook) || h1.Owner != Player.White || !data.CanWhiteCastleKingSide);
_blackRookAMoved |= (!(a8 is Rook) || a8.Owner != Player.Black || !data.CanBlackCastleQueenSide);
_blackRookHMoved |= (!(h8 is Rook) || h8.Owner != Player.Black || !data.CanBlackCastleKingSide);
if (data.EnPassant != null)
{
var latestMove =
new DetailedMove(
new Move(new Square(data.EnPassant.File, data.WhoseTurn == Player.White ? 7 : 2),
new Square(data.EnPassant.File, data.WhoseTurn == Player.White ? 5 : 4),
ChessUtilities.GetOpponentOf(data.WhoseTurn)),
new Pawn(ChessUtilities.GetOpponentOf(data.WhoseTurn)),
false,
CastlingType.None);
_moves.Add(latestMove);
}
_halfMoveClock = data.HalfMoveClock;
_fullMoveNumber = data.FullMoveNumber;
}
protected virtual void UseGameCreationData(GameCreationData data)
{
Board = CloneBoard(data.Board);
WhoseTurn = data.WhoseTurn;
Piece[] eighthRank = Board[0];
Piece[] firstRank = Board[7];
CanBlackCastleKingSide = CanBlackCastleQueenSide = CanWhiteCastleKingSide = CanWhiteCastleQueenSide = CastlingCanBeLegal;
InitialWhiteKingFile = (File)Array.IndexOf(firstRank, new King(Player.White));
InitialBlackKingFile = (File)Array.IndexOf(eighthRank, new King(Player.Black));
if (CastlingCanBeLegal)
{
CanBlackCastleKingSide = data.CanBlackCastleKingSide;
CanBlackCastleQueenSide = data.CanBlackCastleQueenSide;
CanWhiteCastleKingSide = data.CanWhiteCastleKingSide;
CanWhiteCastleQueenSide = data.CanWhiteCastleQueenSide;
}
InitialBlackRookFileQueensideCastling = CanBlackCastleQueenSide ? (File)Array.IndexOf(eighthRank, new Rook(Player.Black)) : File.None;
InitialBlackRookFileKingsideCastling = CanBlackCastleKingSide ? (File)Array.LastIndexOf(eighthRank, new Rook(Player.Black)) : File.None;
InitialWhiteRookFileQueensideCastling = CanWhiteCastleQueenSide ? (File)Array.IndexOf(firstRank, new Rook(Player.White)) : File.None;
InitialWhiteRookFileKingsideCastling = CanWhiteCastleKingSide ? (File)Array.LastIndexOf(firstRank, new Rook(Player.White)) : File.None;
if (InitialBlackRookFileQueensideCastling == File.None)
{
CanBlackCastleQueenSide = false;
}
if (InitialBlackRookFileKingsideCastling == File.None)
{
CanBlackCastleKingSide = false;
}
if (InitialWhiteRookFileKingsideCastling == File.None)
{
CanWhiteCastleKingSide = false;
}
if (InitialWhiteRookFileQueensideCastling == File.None)
{
CanWhiteCastleQueenSide = false;
}
if (data.EnPassant != null)
{
DetailedMove latestMove = new DetailedMove(new Move(new Position(data.EnPassant.File, data.WhoseTurn == Player.White ? 7 : 2),
new Position(data.EnPassant.File, data.WhoseTurn == Player.White ? 5 : 4),
ChessUtilities.GetOpponentOf(data.WhoseTurn)),
new Pawn(ChessUtilities.GetOpponentOf(data.WhoseTurn)),
false,
CastlingType.None);
_moves.Add(latestMove);
}
i_halfMoveClock = data.HalfMoveClock;
i_fullMoveNumber = data.FullMoveNumber;
}
public virtual MoveType ApplyMove(Move move, bool alreadyValidated, out Piece captured)
{
ChessUtilities.ThrowIfNull(move, "move");
captured = null;
if (!alreadyValidated && !IsValidMove(move))
{
return(MoveType.Invalid);
}
MoveType type = MoveType.Move;
Piece movingPiece = GetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank);
Piece capturedPiece = GetPieceAt(move.NewPosition.File, move.NewPosition.Rank);
captured = capturedPiece;
Piece newPiece = movingPiece;
bool isCapture = capturedPiece != null;
CastlingType castle = CastlingType.None;
if (movingPiece is Pawn)
{
i_halfMoveClock = 0;
PositionDistance pd = new PositionDistance(move.OriginalPosition, move.NewPosition);
if (pd.DistanceX == 1 && pd.DistanceY == 1 && GetPieceAt(move.NewPosition) == null)
{ // en passant
isCapture = true;
captured = GetPieceAt(move.NewPosition.File, move.OriginalPosition.Rank);
SetPieceAt(move.NewPosition.File, move.OriginalPosition.Rank, null);
}
if (move.NewPosition.Rank == (move.Player == Player.White ? 8 : 1))
{
newPiece = MapPgnCharToPiece(move.Promotion.Value, move.Player).AsPromotion();
type |= MoveType.Promotion;
}
}
else if (movingPiece is King)
{
if (movingPiece.Owner == Player.White)
{
CanWhiteCastleKingSide = CanWhiteCastleQueenSide = false;
}
else
{
CanBlackCastleKingSide = CanBlackCastleQueenSide = false;
}
if (CastlingCanBeLegal &&
((GetPieceAt(move.NewPosition) is Rook && GetPieceAt(move.NewPosition).Owner == move.Player) ||
((move.NewPosition.File == File.C || move.NewPosition.File == File.G) &&
(move.Player == Player.White ? InitialWhiteKingFile : InitialBlackKingFile) == File.E &&
move.OriginalPosition.File == File.E)))
{
castle = ApplyCastle(move);
type |= MoveType.Castling;
isCapture = false;
}
}
else if (movingPiece is Rook)
{
if (move.Player == Player.White)
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 1)
{
CanWhiteCastleQueenSide = false;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 1)
{
CanWhiteCastleKingSide = false;
}
}
else
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 8)
{
CanBlackCastleQueenSide = false;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 8)
{
CanBlackCastleKingSide = false;
}
}
}
if (isCapture)
{
type |= MoveType.Capture;
i_halfMoveClock = 0;
if (move.NewPosition.File == File.A && move.NewPosition.Rank == 1)
{
CanWhiteCastleQueenSide = false;
}
else if (move.NewPosition.File == File.H && move.NewPosition.Rank == 1)
{
CanWhiteCastleKingSide = false;
}
else if (move.NewPosition.File == File.A && move.NewPosition.Rank == 8)
{
CanBlackCastleQueenSide = false;
}
else if (move.NewPosition.File == File.H && move.NewPosition.Rank == 8)
{
CanBlackCastleKingSide = false;
}
}
if (!isCapture && !(movingPiece is Pawn))
{
i_halfMoveClock++;
if (i_halfMoveClock >= 100)
{
fiftyMoves = true;
}
else
{
fiftyMoves = false;
}
}
if (move.Player == Player.Black)
{
i_fullMoveNumber++;
}
if (castle == CastlingType.None)
{
SetPieceAt(move.NewPosition.File, move.NewPosition.Rank, newPiece);
SetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank, null);
}
WhoseTurn = ChessUtilities.GetOpponentOf(move.Player);
AddDetailedMove(new DetailedMove(move, movingPiece, isCapture, castle));
return(type);
}
public virtual bool IsWinner(Player player)
{
return(IsCheckmated(ChessUtilities.GetOpponentOf(player)));
}
public MoveType ApplyMove(Move move, bool alreadyValidated)
{
ChessUtilities.ThrowIfNull(move, nameof(move));
if (!alreadyValidated && !IsValidMove(move))
{
return(MoveType.Invalid);
}
var type = MoveType.Move;
var movingPiece = GetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank);
var capturedPiece = GetPieceAt(move.NewPosition.File, move.NewPosition.Rank);
var newPiece = movingPiece;
var isCapture = capturedPiece != null;
var castle = CastlingType.None;
if (movingPiece is Pawn)
{
_halfMoveClock = 0;
var pd = new SquareDistance(move.OriginalPosition, move.NewPosition);
if (pd.DistanceX == 1 && pd.DistanceY == 1 && GetPieceAt(move.NewPosition) == null)
{ // en passant
isCapture = true;
SetPieceAt(move.NewPosition.File, move.OriginalPosition.Rank, null);
}
if (move.NewPosition.Rank == (move.Player == Player.White ? 8 : 1))
{
newPiece = move.Promotion;
type |= MoveType.Promotion;
}
}
else if (movingPiece is King)
{
if (movingPiece.Owner == Player.White)
{
_whiteKingMoved = true;
}
else
{
_blackKingMoved = true;
}
if (new SquareDistance(move.OriginalPosition, move.NewPosition).DistanceX == 2)
{
castle = ApplyCastle(move);
type |= MoveType.Castling;
}
}
else if (movingPiece is Rook)
{
if (move.Player == Player.White)
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 1)
{
_whiteRookAMoved = true;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 1)
{
_whiteRookHMoved = true;
}
}
else
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 8)
{
_blackRookAMoved = true;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 8)
{
_blackRookHMoved = true;
}
}
}
if (isCapture)
{
type |= MoveType.Capture;
_halfMoveClock = 0;
}
if (!isCapture && !(movingPiece is Pawn))
{
_halfMoveClock++;
canClaimDraw = _halfMoveClock == 100; // ahaa so THAT's the HalfMove clock .. number of Plys
}
if (move.Player == Player.Black)
{
_fullMoveNumber++;
}
SetPieceAt(move.NewPosition.File, move.NewPosition.Rank, newPiece);
SetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank, null);
WhoseTurn = ChessUtilities.GetOpponentOf(move.Player);
_moves.Add(new DetailedMove(move, movingPiece, isCapture, castle));
return(type);
}
public virtual MoveType ApplyMove(Move move, bool alreadyValidated, out Piece captured)
{
ChessUtilities.ThrowIfNull(move, "move");
captured = null;
if (!alreadyValidated && !IsValidMove(move))
{
return(MoveType.Invalid);
}
MoveType type = MoveType.Move;
Piece movingPiece = GetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank);
Piece capturedPiece = GetPieceAt(move.NewPosition.File, move.NewPosition.Rank);
captured = capturedPiece;
Piece newPiece = movingPiece;
enp = "-1";
bool isCapture = capturedPiece != null;
CastlingType castle = CastlingType.None;
if (movingPiece is Pawn)
{
i_halfMoveClock = 0;
PositionDistance pd = new PositionDistance(move.OriginalPosition, move.NewPosition);
if (pd.DistanceX == 1 && pd.DistanceY == 1 && GetPieceAt(move.NewPosition) == null)
{ // en passant
isCapture = true;
captured = GetPieceAt(move.NewPosition.File, move.OriginalPosition.Rank);
enp = move.NewPosition.File.ToString().ToLower() + move.OriginalPosition.Rank.ToString();
SetPieceAt(move.NewPosition.File, move.OriginalPosition.Rank, null);
}
if (move.NewPosition.Rank == (move.Player == Player.White ? 8 : 1))
{
//get promotion type
char PromoteTo;
if (move.Promotion == null)
{
string promote;
Console.Write("enter promotion type:");
promote = Console.ReadLine();
switch (promote)
{
case "queen":
PromoteTo = 'Q';
break;
case "bishop":
PromoteTo = 'B';
break;
case "knight":
PromoteTo = 'N';
break;
case "rook":
PromoteTo = 'R';
break;
default:
PromoteTo = 'Q';
break;
}
}
else
{
PromoteTo = 'Q';
}
newPiece = MapPgnCharToPiece(PromoteTo, move.Player).AsPromotion();
type |= MoveType.Promotion;
}
}
else if (movingPiece is King)
{
if (movingPiece.Owner == Player.White)
{
CanWhiteCastleKingSide = CanWhiteCastleQueenSide = false;
}
else
{
CanBlackCastleKingSide = CanBlackCastleQueenSide = false;
}
if (CastlingCanBeLegal &&
((GetPieceAt(move.NewPosition) is Rook && GetPieceAt(move.NewPosition).Owner == move.Player) ||
((move.NewPosition.File == File.C || move.NewPosition.File == File.G) &&
(move.Player == Player.White ? InitialWhiteKingFile : InitialBlackKingFile) == File.E &&
move.OriginalPosition.File == File.E)))
{
castle = ApplyCastle(move);
type |= MoveType.Castling;
isCapture = false;
}
}
else if (movingPiece is Rook)
{
if (move.Player == Player.White)
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 1)
{
CanWhiteCastleQueenSide = false;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 1)
{
CanWhiteCastleKingSide = false;
}
}
else
{
if (move.OriginalPosition.File == File.A && move.OriginalPosition.Rank == 8)
{
CanBlackCastleQueenSide = false;
}
else if (move.OriginalPosition.File == File.H && move.OriginalPosition.Rank == 8)
{
CanBlackCastleKingSide = false;
}
}
}
if (isCapture)
{
type |= MoveType.Capture;
i_halfMoveClock = 0;
if (move.NewPosition.File == File.A && move.NewPosition.Rank == 1)
{
CanWhiteCastleQueenSide = false;
}
else if (move.NewPosition.File == File.H && move.NewPosition.Rank == 1)
{
CanWhiteCastleKingSide = false;
}
else if (move.NewPosition.File == File.A && move.NewPosition.Rank == 8)
{
CanBlackCastleQueenSide = false;
}
else if (move.NewPosition.File == File.H && move.NewPosition.Rank == 8)
{
CanBlackCastleKingSide = false;
}
}
if (!isCapture && !(movingPiece is Pawn))
{
i_halfMoveClock++;
if (i_halfMoveClock >= 100)
{
fiftyMoves = true;
}
else
{
fiftyMoves = false;
}
}
if (move.Player == Player.Black)
{
i_fullMoveNumber++;
}
if (castle == CastlingType.None)
{
SetPieceAt(move.NewPosition.File, move.NewPosition.Rank, newPiece);
SetPieceAt(move.OriginalPosition.File, move.OriginalPosition.Rank, null);
}
WhoseTurn = ChessUtilities.GetOpponentOf(move.Player);
AddDetailedMove(new DetailedMove(move, movingPiece, isCapture, castle));
return(type);
}
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());
}
