public BoardSpace(BoardSpace fromSpace)
{
position = fromSpace.position;
piece = null;
if (fromSpace.piece != null)
{
if (fromSpace.piece.GetType() == typeof(Pawn))
{
piece = new Pawn(fromSpace.piece, this);
}
else if (fromSpace.piece.GetType() == typeof(Knight))
{
piece = new Knight(fromSpace.piece, this);
}
else if (fromSpace.piece.GetType() == typeof(Bishop))
{
piece = new Bishop(fromSpace.piece, this);
}
else if (fromSpace.piece.GetType() == typeof(Rook))
{
piece = new Rook(fromSpace.piece, this);
}
else if (fromSpace.piece.GetType() == typeof(Queen))
{
piece = new Queen(fromSpace.piece, this);
}
else if (fromSpace.piece.GetType() == typeof(King))
{
piece = new King(fromSpace.piece, this);
}
}
}
public Move(Chessman piece, BoardSpace fromSpace, BoardSpace toSpace, Board context, int score = 0)
{
contextBoard = context;
this.toSpace = toSpace;
this.fromSpace = fromSpace;
this.score = score; // AI Weight
}
public Knight(BoardSpace initPos, ChessmanColor color)
{
score = AIWeights.knightScore;
position = initPos;
this.color = color;
whiteImage = Properties.Resources.WhiteKnight;
blackImage = Properties.Resources.BlackKnight;
}
public Bishop(BoardSpace initPos, ChessmanColor color)
{
score = AIWeights.bishopScore;
position = initPos;
this.color = color;
whiteImage = Properties.Resources.WhiteBishop;
blackImage = Properties.Resources.BlackBishop;
}
public Pawn(BoardSpace initPos, ChessmanColor color)
{
score = AIWeights.pawnScore;
position = initPos;
this.color = color;
whiteImage = Properties.Resources.WhitePawn;
blackImage = Properties.Resources.BlackPawn;
}
public Move(Move other, Board newBoard) // copy Using New Reference Board
{
contextBoard = newBoard;
this.toSpace = new BoardSpace(other.toSpace);
this.fromSpace = new BoardSpace(other.fromSpace);
this.score = other.score; // AI Weight
piece = other.toSpace.piece;
}
public Move(Move other) // Copy using using Same Reference Board
{
contextBoard = other.contextBoard;
this.toSpace = other.toSpace;
this.fromSpace = other.fromSpace;
this.score = other.score; // AI Weight
piece = other.piece;
}
public King(BoardSpace initPos, ChessmanColor color)
{
score = AIWeights.queenScore;
position = initPos;
this.color = color;
whiteImage = Properties.Resources.WhiteKing;
blackImage = Properties.Resources.BlackKing;
}
public Rook(BoardSpace initPos, ChessmanColor color)
{
score = AIWeights.rookScore;
position = initPos;
this.color = color;
whiteImage = Properties.Resources.WhiteRook;
blackImage = Properties.Resources.BlackRook;
}
public override bool Equals(object obj)
{
bool rv = false;
if (obj != null || GetType() == obj.GetType())
{
BoardSpace passedSpace = (BoardSpace)obj;
if (position.Item1 == passedSpace.position.Item1 && position.Item2 == passedSpace.position.Item2)
{
rv = true;
}
}
return(rv);
}
public Move(String move, Board context, int score = 0, bool postMove = false)
{
if (Regex.IsMatch(move, "[A-Za-z][0-9][A-Za-z][0-9].*"))
{
contextBoard = context;
toSpace = contextBoard.getSpace(move.Substring(0, 1).ToString().ToUpper()[0], int.Parse(move.Substring(1, 1)));
fromSpace = contextBoard.getSpace(move.Substring(2, 1).ToString().ToUpper()[0], int.Parse(move.Substring(3, 1)));
this.score = score; // AI Weight
piece = (postMove) ? toSpace.piece : fromSpace.piece;
}
else
{
throw new Exception("Supplied Move is not UCI Formatted.");
}
}
public Queen(Chessman fromPiece, BoardSpace initPos)
{
if (fromPiece.GetType() == typeof(Queen))
{
Queen from = (Queen)fromPiece;
score = from.score;
position = initPos;
this.color = from.color;
whiteImage = from.whiteImage;
blackImage = from.blackImage;
}
else
{
throw new Exception($"Cant Create Copy of Piece becasue it is the wrong type");
}
}
public BoardSpace getSpace(char col, int row)
{
BoardSpace rv = null;
try
{
if (col >= 'A' && col <= 'H' && row >= 1 && row <= 8)
{
rv = boardState[BoardSpace.getIndexForBoardRow(row), BoardSpace.getIndexForBoardColumn(col)];
}
}
catch
{
}
return(rv);
}
private void updateValidSquaresForSelectedCB(MyCheckBox cb)
{
if (cb.Checked)
{
//cb.Image = ResizeImage(Properties.Resources.BlackKnight, cb.Size.Width/2, cb.Size.Height/2);
cb.BackColor = MyCheckBox.chessBoardSelectedColor;
}
else
{
cb.BackColor = cb.checkerBoardColor;
}
//Disable All Invalid moves
Game currGame = ((Game)gamesListBox.SelectedItem);
Board board = currGame.gameBoard;
BoardSpace boardPos = cb.getLinkedBoardSpace();
if (boardPos.piece != null && boardPos.piece.color == currGame.color)
{
List <Move> validMoves = boardPos.piece.getAvailableMoves(board);
foreach (Move mv in validMoves)
{
// Highlight valid Moves
bool found = false;
for (int row = 1; row <= 8; row++)
{
for (Char col = 'A'; col <= 'H'; col++)
{
MyCheckBox itCB = chessBoardList[row - 1, col - 'A'];
if (itCB.getLinkedBoardSpace().position.Item2 == mv.toSpace.position.Item2 && itCB.getLinkedBoardSpace().position.Item1 == mv.toSpace.position.Item1)
{
itCB.BackColor = MyCheckBox.chessBoardValidMoveColor;
found = true;
break;;
}
if (found)
{
break;
}
}
}
}
}
}
public override List <Move> getAvailableMoves(Board boardState)
{
List <Move> validMoveList = new List <Move>();
// Get Valid Moves
BoardSpace toPos = null;
// The King Has the Same Moveset whether it is in check or not
// First Move
for (int x = -1; x <= 1; x++)
{
for (int y = -1; y <= 1; y++)
{
if (!(x == 0 && y == 0))
{
toPos = boardState.getSpace(Convert.ToChar(position.position.Item1 + x), position.position.Item2 + y);
if (toPos != null)
{
if (toPos.piece == null || toPos.piece.color != color)
{
Move newMove = new Move(this, position, toPos, boardState, (toPos.piece == null) ? 0 : toPos.piece.score);
Board newBoardAfterMove = new Board(boardState);
newBoardAfterMove.updateBoardForMove(newMove);
if (!newBoardAfterMove.isKingInCheck(color)) // Check if New Move is in Check
{
validMoveList.Add(newMove);
}
}
}
}
}
}
// Amend Scores for Pieces that Are now attacking this piece
// Handle Castle
return(validMoveList);
}
public Board(Board fromBoard)
{
// Copy BoardState Array
for (int row = 0; row < 8; row++)
{
for (int col = 0; col < 8; col++)
{
boardState[row, col] = new BoardSpace(fromBoard.boardState[row, col]);
}
}
// Recalculate moves on King
updateAttacksOnKing(ChessmanColor.white);
updateAttacksOnKing(ChessmanColor.black);
// update attacks arrays
whiteKingPos = this.getSpace(fromBoard.whiteKingPos.position.Item1, fromBoard.whiteKingPos.position.Item2);
blackKingPos = this.getSpace(fromBoard.blackKingPos.position.Item1, fromBoard.blackKingPos.position.Item2);
}
public override List <Move> getAvailableMoves(Board boardState)
{
List <Move> validMoveList = new List <Move>();
// Get Valid Moves
BoardSpace toPos = null;
for (int x = -2; x <= 2; x++)
{
for (int y = -2; y <= 2; y++)
{
if (x != 0 && y != 0 && (Math.Abs(x) != Math.Abs(y)))
{
toPos = boardState.getSpace(Convert.ToChar(position.position.Item1 + x), position.position.Item2 + y);
if (toPos != null)
{
if (toPos.piece == null || toPos.piece.color != color)
{
Move newMove = new Move(this, position, toPos, boardState, (toPos.piece == null) ? 0 : toPos.piece.score);
validMoveList.Add(newMove);
}
}
}
}
}
// Amend Scores for Pieces that Are now attacking this piece
if (boardState.isKingInCheck(color))
{
List <Move> afterCheckMoveList = getCheckBlockingMoves(boardState, validMoveList, color);
validMoveList.Clear();
validMoveList.AddRange(afterCheckMoveList);
}
return(validMoveList);
}
public Board(String fen = "")
{
// A1 is Bottom Left Corner, H8 is top Right Corner
for (int row = 0; row < 8; row++)
{
for (int col = 0; col < 8; col++)
{
Char tmp = (Char)('A' + col);
int effectiveRow = 8 - row;
boardState[row, col] = new BoardSpace(tmp, effectiveRow);
if (fen != "")
{
// Process FEN
boardState[row, col].generatePieceFromFen(fen);
}
else
{
if (effectiveRow == 2 || effectiveRow == 7)
{
boardState[row, col].piece = new Pawn(boardState[row, col], (effectiveRow == 2) ? ChessmanColor.white : ChessmanColor.black);
}
else if (effectiveRow == 1 || effectiveRow == 8)
{
// Setup White BackRow
switch (tmp)
{
case 'A':
boardState[row, col].piece = new Rook(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'B':
boardState[row, col].piece = new Knight(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'C':
boardState[row, col].piece = new Bishop(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'D':
boardState[row, col].piece = new Queen(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'E':
boardState[row, col].piece = new King(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
if (effectiveRow == 1)
{
whiteKingPos = boardState[row, col];
}
else
{
blackKingPos = boardState[row, col];
}
break;
case 'F':
boardState[row, col].piece = new Bishop(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'G':
boardState[row, col].piece = new Knight(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
case 'H':
boardState[row, col].piece = new Rook(boardState[row, col], ((effectiveRow == 1) ? ChessmanColor.white : ChessmanColor.black));
break;
}
}
}
}
}
}
private Chessman movePieceOnBoard(BoardSpace fromSpace, BoardSpace toSpace, String extraArgs = "")
{
// This is kust updating the data model. Validation Should occur prior to this
// This function Assumes that the moves are valid.
Chessman fromPiece = fromSpace.piece;
Chessman killedPiece = null;
if (toSpace.piece != null)
{
// We killed piece remove it.
killedPiece = toSpace.piece;
}
fromPiece.position = toSpace;
toSpace.piece = fromPiece;
fromSpace.piece = null;
if (toSpace.piece.GetType() == typeof(King))
{
King kp = (King)toSpace.piece;
if (kp.canCastle)
{
kp.canCastle = false;
}
if (kp.color == ChessmanColor.white)
{
whiteKingPos = toSpace;
}
else
{
blackKingPos = toSpace;
}
}
else if (toSpace.piece.GetType() == typeof(Rook))
{
Rook rp = (Rook)toSpace.piece;
if (rp.canCastle)
{
rp.canCastle = false;
}
}
else if (toSpace.piece.GetType() == typeof(Pawn))
{
((Pawn)toSpace.piece).canMoveTwice = false; // Pawns Can only Move Twice on the first move
if ((toSpace.piece.color == ChessmanColor.black && toSpace.position.Item2 == 1) || (toSpace.piece.color == ChessmanColor.white && toSpace.position.Item2 == 8))
{
Char promotionType = 'q';
if (extraArgs.Length > 0)
{
promotionType = extraArgs.ToLower()[0];
}
switch (promotionType)
{
case 'q':
// Promote to Queen
Queen q = new Queen(toSpace, toSpace.piece.color);
toSpace.piece = q;
break;
case 'b':
// Promote to Queen
Bishop b = new Bishop(toSpace, toSpace.piece.color);
toSpace.piece = b;
break;
case 'n':
// Promote to Queen
Knight kn = new Knight(toSpace, toSpace.piece.color);
toSpace.piece = kn;
break;
case 'r':
// Promote to Queen
Rook r = new Rook(toSpace, toSpace.piece.color);
toSpace.piece = r;
break;
}
}
}
updateAttacksOnKing(toSpace.piece.color);
return(killedPiece);
}
public bool updateBoardForMove(String move)
{
bool moveValid = false;
String fromPos = move.Substring(0, 2).ToUpper();
String toPos = move.Substring(2, 2).ToUpper();
String extraArgs = "";
if (move.Length > 4)
{
extraArgs = move.Substring(4, move.Length - 4);
}
try
{
BoardSpace fromSpace = getSpace(fromPos[0], int.Parse(new String(new char[] { fromPos[1] })));
BoardSpace toSpace = getSpace(toPos[0], int.Parse(new String(new char[] { toPos[1] })));
if (fromSpace.piece != null)
{
Chessman fromPiece = fromSpace.piece;
if (true) // Do check if move is valid for piece type
{
if (fromPiece.GetType() == typeof(King) && ((King)fromPiece).canCastle && ((fromPiece.color == ChessmanColor.white && fromSpace.position.Item1 == 'E' && fromSpace.position.Item2 == 1 && (toSpace.position.Item1 == 'G' && toSpace.position.Item2 == 1) || (toSpace.position.Item1 == 'C' && toSpace.position.Item2 == 1)) || (fromPiece.color == ChessmanColor.black && fromSpace.position.Item1 == 'E' && fromSpace.position.Item2 == 8 && (toSpace.position.Item1 == 'G' && toSpace.position.Item2 == 8) || (toSpace.position.Item1 == 'C' && toSpace.position.Item2 == 8))))
{
King kingPiece = ((King)fromPiece);
//Attempting a castle VAlidate it
BoardSpace rookSpace = null;
if (kingPiece.color == ChessmanColor.white && (toSpace.position.Item1 == 'G' && toSpace.position.Item2 == 1))
{
// White King Side Castle
rookSpace = getSpace('H', 1);
if (rookSpace.piece.GetType() == typeof(Rook) && ((Rook)rookSpace.piece).canCastle) // Was the King Side Rook moved before now
{
if (getSpace('F', 1).piece == null && getSpace('G', 1).piece == null) // Are all the spaces between the Rook and Knight Clear
{
if (true) // Are any Spaces the King Must Move Under Attack. (E1(Check),F1, G1) (Skipping for now until we can check this)
{
movePieceOnBoard(fromSpace, toSpace, extraArgs); // Move King
movePieceOnBoard(rookSpace, getSpace('F', 1), extraArgs); // Move Rook
moveValid = true;
}
}
}
}
else if (kingPiece.color == ChessmanColor.white && (toSpace.position.Item1 == 'C' && toSpace.position.Item2 == 1))
{
// White Queen Side Castle
rookSpace = getSpace('A', 1);
if (rookSpace.piece.GetType() == typeof(Rook) && ((Rook)rookSpace.piece).canCastle) // Was the King Side Rook moved before now
{
if (getSpace('B', 1).piece == null && getSpace('C', 1).piece == null && getSpace('D', 1).piece == null) // Are all the spaces between the Rook and Knight Clear
{
if (true) // Are any Spaces the King Must Move Under Attack. (E1(Check), D1, C1) (Skipping for now until we can check this)
{
movePieceOnBoard(fromSpace, toSpace, extraArgs); // Move King
movePieceOnBoard(rookSpace, getSpace('D', 1), extraArgs); // Move Rook
moveValid = true;
}
}
}
}
else if (kingPiece.color == ChessmanColor.black && (toSpace.position.Item1 == 'G' && toSpace.position.Item2 == 8))
{
// White King Side Castle
rookSpace = getSpace('H', 8);
if (rookSpace.piece.GetType() == typeof(Rook) && ((Rook)rookSpace.piece).canCastle) // Was the King Side Rook moved before now
{
if (getSpace('F', 8).piece == null && getSpace('G', 8).piece == null) // Are all the spaces between the Rook and Knight Clear
{
if (true) // Are any Spaces the King Must Move Under Attack. (E8(Check),F8, G8) (Skipping for now until we can check this)
{
movePieceOnBoard(fromSpace, toSpace, extraArgs); // Move King
movePieceOnBoard(rookSpace, getSpace('F', 8), extraArgs); // Move Rook
moveValid = true;
}
}
}
}
else if (kingPiece.color == ChessmanColor.black && (toSpace.position.Item1 == 'C' && toSpace.position.Item2 == 8))
{
// White Queen Side Castle
rookSpace = getSpace('A', 8);
if (rookSpace.piece.GetType() == typeof(Rook) && ((Rook)rookSpace.piece).canCastle) // Was the King Side Rook moved before now
{
if (getSpace('B', 8).piece == null && getSpace('C', 8).piece == null && getSpace('D', 8).piece == null) // Are all the spaces between the Rook and Knight Clear
{
if (true) // Are any Spaces the King Must Move Under Attack. (E1(Check), D1, C1) (Skipping for now until we can check this)
{
movePieceOnBoard(fromSpace, toSpace, extraArgs); // Move King
movePieceOnBoard(rookSpace, getSpace('D', 8), extraArgs); // Move Rook
moveValid = true;
}
}
}
}
if (moveValid)
{
// Grab All King and Rooks for the color and disable castling
foreach (BoardSpace s in boardState)
{
if (s.piece != null && s.piece.color == fromPiece.color)
{
if (s.piece.GetType() == typeof(Rook))
{
((Rook)s.piece).canCastle = false;
}
else if (s.piece.GetType() == typeof(King))
{
((King)s.piece).canCastle = false;
}
}
}
}
}
else
{
movePieceOnBoard(fromSpace, toSpace, extraArgs);
moveValid = true;
}
}
}
else
{
// There should always be a piece in the from Space
}
}
catch
{
}
return(moveValid);
}
public static List <Move> getMovesForBishop(Board boardState, ChessmanColor color, BoardSpace position)
{
List <Move> validMoveList = new List <Move>();
//Starting At Inital Position moves the 4 directions until the board is gone or a piece is reached
char col = Convert.ToChar(position.position.Item1 + 1);
int row = position.position.Item2 + 1;
for (; row <= 8 && col <= 'H'; row++, col++)
{
// increasing Diagonal
BoardSpace moveSpace = boardState.getSpace(col, row);
if (moveSpace != null)
{
if (moveSpace.piece == null)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, 0));
}
else if (moveSpace.piece.color != color)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, moveSpace.piece.score));
break;
}
else
{
break;
}
}
}
col = Convert.ToChar(position.position.Item1 - 1);
row = position.position.Item2 - 1;
for (; row >= 1 && col >= 'A'; row--, col--)
{
// increasing Diagonal
BoardSpace moveSpace = boardState.getSpace(col, row);
if (moveSpace != null)
{
if (moveSpace.piece == null)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, 0));
}
else if (moveSpace.piece.color != color)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, moveSpace.piece.score));
break;
}
else
{
break;
}
}
}
col = Convert.ToChar(position.position.Item1 + 1);
row = position.position.Item2 - 1;
for (; row >= 1 && col <= 'H'; row--, col++)
{
// increasing Diagonal
BoardSpace moveSpace = boardState.getSpace(col, row);
if (moveSpace != null)
{
if (moveSpace.piece == null)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, 0));
}
else if (moveSpace.piece.color != color)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, moveSpace.piece.score));
break;
}
else
{
break;
}
}
}
col = Convert.ToChar(position.position.Item1 - 1);
row = position.position.Item2 + 1;
for (; row <= 8 && col >= 'A'; row++, col--)
{
// increasing Diagonal
BoardSpace moveSpace = boardState.getSpace(col, row);
if (moveSpace != null)
{
if (moveSpace.piece == null)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, 0));
}
else if (moveSpace.piece.color != color)
{
validMoveList.Add(new Move(position.piece, position, moveSpace, boardState, moveSpace.piece.score));
break;
}
else
{
break;
}
}
}
// Amend Scores for Pieces that Are now attacking this piece
if (boardState.isKingInCheck(color))
{
List <Move> afterCheckMoveList = getCheckBlockingMoves(boardState, validMoveList, color);
validMoveList.Clear();
validMoveList.AddRange(afterCheckMoveList);
}
return(validMoveList);
}
public override List <Move> getAvailableMoves(Board boardState)
{
List <Move> validMoveList = new List <Move>();
// Get Valid Moves
int numMoves = (canMoveTwice) ? 2 : 1;
BoardSpace toPos = null;
// Normal Moves
// First Move
for (int i = 1; i <= numMoves; i++)
{
toPos = boardState.getSpace(Convert.ToChar(position.position.Item1), (color == ChessmanColor.white) ? position.position.Item2 + i : position.position.Item2 - i);
if (toPos != null)
{
if (toPos.piece == null)
{
Move newMove = new Move(this, position, toPos, boardState, 0);
// Is A Promoting Move
if ((color == ChessmanColor.white) ? (toPos.position.Item2 == 8) : (toPos.position.Item2 == 1))
{
newMove.score = AIWeights.queenScore;
}
validMoveList.Add(newMove);
}
else
{
break;
}
}
else
{
continue;
}
}
// Attacking Moves
toPos = boardState.getSpace(Convert.ToChar(position.position.Item1 + 1), (color == ChessmanColor.white) ? position.position.Item2 + 1 : position.position.Item2 - 1);
BoardSpace toPos2 = boardState.getSpace(Convert.ToChar(position.position.Item1 - 1), (color == ChessmanColor.white) ? position.position.Item2 + 1 : position.position.Item2 - 1);
List <BoardSpace> possibleMoves = new List <BoardSpace>()
{
toPos, toPos2
};
foreach (BoardSpace space in possibleMoves)
{
if (space != null)
{
if (space != null && space.piece != null && space.piece.color == Helper.getOpponentColor(color))
{
validMoveList.Add(new Move(this, position, space, boardState, ((space.piece.color == Helper.getOpponentColor(color)) ? space.piece.score : 0)));
}
}
else
{
continue;
}
}
// Amend Scores for Pieces that Are now attacking this piece
if (boardState.isKingInCheck(color))
{
List <Move> afterCheckMoveList = getCheckBlockingMoves(boardState, validMoveList, color);
validMoveList.Clear();
validMoveList.AddRange(afterCheckMoveList);
}
return(validMoveList);
}