public override void Move(SquareIdentifier to)
{
var castelingMoves = GetCastelingMoves()
.Select(s => s.Identifier)
.ToList();
if (castelingMoves.Contains(to))
{
var oldFile = 'a';
var newFile = 'd';
var rank = '1';
if (to.File > CurrentSquare.Identifier.File)
{
oldFile = 'h';
newFile = 'f';
}
if (Color == Army.Black)
{
rank = '8';
}
var oldSquareIdentifier = new SquareIdentifier(oldFile, rank);
var newSquareIdentifier = new SquareIdentifier(newFile, rank);
var rook = CurrentSquare.Board[oldSquareIdentifier].Piece;
CurrentSquare.Board[oldSquareIdentifier].Piece = null;
CurrentSquare.Board[newSquareIdentifier].Piece = rook;
rook.CurrentSquare = CurrentSquare.Board[newSquareIdentifier];
}
try
{
base.Move(to);
_hasMoved = true;
}
finally
{
_possibleCastelingMoves = null;
}
}
protected bool IsKingInCheckAfterMove(SquareIdentifier squareIdentifier)
{
var board = CurrentSquare.Board;
var squareBefore = CurrentSquare;
var squareAfter = board[squareIdentifier];
var pieceAtNewSquare = squareAfter.Piece;
CurrentSquare.Piece = null;
CurrentSquare = squareAfter;
squareAfter.Piece = this;
var isInCheckAfterMove = board.IsInCheck(Color);
squareBefore.Piece = this;
squareAfter.Piece = pieceAtNewSquare;
CurrentSquare = squareBefore;
return isInCheckAfterMove;
}
public void Move(SquareIdentifier from, SquareIdentifier to)
{
if (_hasStarted == false)
{
throw new InvalidOperationException("Game hasn't been started.");
}
if (_hasEnded)
{
throw new InvalidOperationException("Game has been ended.");
}
var piece = Board[from].Piece;
if (piece == null)
{
throw new IllegalMoveException(from, to, "No piece to move at the location.");
}
if (piece.Color != CurrentTurn)
{
throw new IllegalMoveException(from, to, string.Format("It is not {0}'s turn to move.", piece.Color));
}
piece.Move(to);
if (HasEnded())
{
OnGameEnded();
}
else
{
CurrentTurn = CurrentTurn == Army.White
? Army.Black
: Army.White;
OnNewTurn();
}
}
public virtual void Move(SquareIdentifier to)
{
if (GetPossibleMoves().Contains(to) == false)
{
throw new IllegalMoveException(CurrentSquare.Identifier, to, string.Format("{0} to {1} is an invalid move.", CurrentSquare.Identifier, to));
}
var from = CurrentSquare.Identifier;
var movedPiece = this;
var capturedPiece = CurrentSquare.Board[to].Piece;
CurrentSquare.Piece = null;
CurrentSquare.Board[to].Piece = this;
CurrentSquare.Board[to].Piece.CurrentSquare = CurrentSquare.Board[to];
CurrentSquare.Board.History.Moves.Add(
new Move
{
From = from,
To = to,
MovedPiece = movedPiece,
CapturedPiece = capturedPiece
});
}
private void InitializePosition(string positionText, Piece piece)
{
var position = new SquareIdentifier(positionText);
var square = this[position];
square.Identifier = position;
square.Piece = piece;
square.Board = this;
if (piece != null)
{
piece.CurrentSquare = square;
}
}
private static IntPair ToIndecies(SquareIdentifier squareIdentifier)
{
int fileIndex;
switch (squareIdentifier.File)
{
case 'a':
fileIndex = 0;
break;
case 'b':
fileIndex = 1;
break;
case 'c':
fileIndex = 2;
break;
case 'd':
fileIndex = 3;
break;
case 'e':
fileIndex = 4;
break;
case 'f':
fileIndex = 5;
break;
case 'g':
fileIndex = 6;
break;
case 'h':
fileIndex = 7;
break;
default:
throw new ArgumentOutOfRangeException("squareIdentifier", "Invaid label.");
}
var rankIndex = Convert.ToInt32(squareIdentifier.Rank.ToString()) - 1;
var indices = new IntPair(fileIndex, rankIndex);
return indices;
}
public bool IsOccupied(SquareIdentifier squareIdentifier)
{
return this[squareIdentifier].IsOccupied();
}
public bool IsFree(SquareIdentifier squareIdentifier)
{
return this[squareIdentifier].IsFree();
}
public Square this[SquareIdentifier squareIdentifier]
{
get
{
var indicies = ToIndecies(squareIdentifier);
return _squares[indicies.Item1, indicies.Item2];
}
}
public IllegalMoveException(SquareIdentifier from, SquareIdentifier to, string message)
: base(message)
{
From = from;
To = to;
}
public override void Move(SquareIdentifier to)
{
if (GetPossibleMoves().Contains(to) == false)
{
throw new IllegalMoveException(CurrentSquare.Identifier, to, string.Format("{0} to {1} is an invalid move.", CurrentSquare.Identifier, to));
}
var from = CurrentSquare.Identifier;
var movedPiece = this;
var capturedPiece = CurrentSquare.Board[to].Piece;
CurrentSquare.Piece = null;
var toSquare = CurrentSquare.Board[to];
if (IsEnPassantMove(toSquare))
{
if (Color == Army.White)
{
capturedPiece = toSquare.SquareBelow.Piece;
toSquare.SquareBelow.Piece = null;
}
else
{
capturedPiece = toSquare.SquareAbove.Piece;
toSquare.SquareAbove.Piece = null;
}
}
toSquare.Piece = this;
toSquare.Piece.CurrentSquare = toSquare;
CurrentSquare.Board.History.Moves.Add(
new Move
{
From = from,
To = to,
MovedPiece = movedPiece,
CapturedPiece = capturedPiece
});
if (IsPromotionSquare(toSquare))
{
Piece promotedPiece;
switch (CurrentSquare.Board.PromotionChoice())
{
case PromotionChoice.Rook:
promotedPiece = new Rook();
break;
case PromotionChoice.Bishop:
promotedPiece = new Bishop();
break;
case PromotionChoice.Knight:
promotedPiece = new Knight();
break;
default:
promotedPiece = new Queen();
break;
}
promotedPiece.CurrentSquare = toSquare;
toSquare.Piece = promotedPiece;
}
}