public MoveServiceResult MovePiece(MoveServiceRequest moveRequest, int moveNumber)
{
var piece = moveRequest.Pieces[moveRequest.Start];
if (moveRequest.Pieces.ContainsKey(moveRequest.End))
{
RemovePieceFromBoard(moveRequest, moveRequest.End);
}
else
{
if (IsCastleMove(moveRequest.Start, moveRequest.End, piece))
{
ProcessCastleMove(moveRequest, piece.Colour, moveNumber);
}
else if (piece is Pawn && moveRequest.Start.Column != moveRequest.End.Column)
{
var enPassantPawnPosition = new Position(moveRequest.Start.Row, moveRequest.End.Column);
RemovePieceFromBoard(moveRequest, enPassantPawnPosition);
}
}
moveRequest.Pieces.Remove(moveRequest.Start);
moveRequest.Pieces.Add(moveRequest.End, piece);
piece.MovePiece(moveRequest.End, moveNumber);
return(new MoveServiceResult
{
Pieces = moveRequest.Pieces,
BlackPieces = moveRequest.BlackPieces,
WhitePieces = moveRequest.WhitePieces
});
}
public void RemovePieceFromBoard(MoveServiceRequest moveRequest, Position piecePosition)
{
var capturedPiece = moveRequest.Pieces[piecePosition];
moveRequest.Pieces.Remove(piecePosition);
if (capturedPiece.Colour == Colour.White)
{
moveRequest.WhitePieces.Remove(capturedPiece);
}
else
{
moveRequest.BlackPieces.Remove(capturedPiece);
}
}
public GameState ProcessMove(Position start, Position end)
{
var movePiece = new MoveServiceRequest
{
End = end,
Start = start,
Pieces = _gameState.Pieces,
BlackPieces = _gameState.BlackPieces,
WhitePieces = _gameState.WhitePieces
};
var moveServiceResult = _moveService.MovePiece(movePiece, _gameState.MoveNumber);
_gameState.MoveNumber += 1;
_gameState.IsCheck = IsCheck(_gameState);
_gameState.Pieces = moveServiceResult.Pieces;
_gameState.BlackPieces = moveServiceResult.BlackPieces;
_gameState.WhitePieces = moveServiceResult.WhitePieces;
_gameState.ValidMoves = GenerateValidMoves();
return(_gameState);
}
private static void ProcessCastleMove(MoveServiceRequest moveServiceRequest, Colour pieceColour, int moveNumber)
{
if (pieceColour == Colour.White)
{
if (moveServiceRequest.Start.Column - moveServiceRequest.End.Column < 0)
{
var rook = moveServiceRequest.Pieces[new Position(0, 7)];
moveServiceRequest.Pieces.Remove(new Position(0, 7));
rook.MovePiece(new Position(0, 5), moveNumber);
moveServiceRequest.Pieces.Add(new Position(0, 5), rook);
}
else
{
var rook = moveServiceRequest.Pieces[new Position(0, 0)];
moveServiceRequest.Pieces.Remove(new Position(0, 0));
rook.MovePiece(new Position(0, 3), moveNumber);
moveServiceRequest.Pieces.Add(new Position(0, 3), rook);
}
}
else
{
if (moveServiceRequest.Start.Column - moveServiceRequest.End.Column < 0)
{
var rook = moveServiceRequest.Pieces[new Position(7, 7)];
moveServiceRequest.Pieces.Remove(new Position(7, 7));
rook.MovePiece(new Position(7, 5), moveNumber);
moveServiceRequest.Pieces.Add(new Position(7, 5), rook);
}
else
{
var rook = moveServiceRequest.Pieces[new Position(7, 0)];
moveServiceRequest.Pieces.Remove(new Position(7, 0));
rook.MovePiece(new Position(7, 3), moveNumber);
moveServiceRequest.Pieces.Add(new Position(7, 3), rook);
}
}
}