private void CastlingDecoratorChanges(IPiece piece, Position position, ChessboardModel chessboard)
{
var strategyFacctory = new CheckStrategyFactory();
switch (piece.Kind)
{
case KindOfPiece.Knight:
piece.CheckStrategy = strategyFacctory.Create(piece.Kind, false);
if (chessboard[0, position.Y].Piece?.Kind == KindOfPiece.Rook)
{
chessboard[0, position.Y].Piece.CheckStrategy = strategyFacctory.Create(KindOfPiece.Rook, false);
}
if (chessboard[7, position.Y].Piece?.Kind == KindOfPiece.Rook)
{
chessboard[7, position.Y].Piece.CheckStrategy = strategyFacctory.Create(KindOfPiece.Rook, false);
}
break;
case KindOfPiece.Rook:
piece.CheckStrategy = strategyFacctory.Create(piece.Kind, false);
if (position.X == 0)
{
chessboard[4, position.Y].Piece.CheckStrategy = strategyFacctory.CreateKingStrategyWithCastlingDecorator(TypeOfCastling.Short);
}
else if (position.X == 7)
{
chessboard[4, position.Y].Piece.CheckStrategy = strategyFacctory.CreateKingStrategyWithCastlingDecorator(TypeOfCastling.Long);
}
break;
default: throw new ApplicationException("unexpected argument");
}
}
public void Move(Position firstPosition, Position secondPosition, ChessboardModel chessboard)
{
Field firstField = chessboard[firstPosition];
Field secondField = chessboard[secondPosition];
IsCastlingDecoratorChange(firstPosition, secondPosition, chessboard);
if (secondField.Piece == null)
{
NormalMove(firstField, secondField);
}
else if (firstField.Piece.Kind == KindOfPiece.King &&
firstPosition.X == 4 &&
(secondPosition.X == 2 || secondPosition.X == 6))
{
Castling(firstField, secondField, secondPosition, chessboard);
}
else if (firstField.Piece.Colour != secondField.Piece.Colour)
{
Attack(firstField, secondField);
}
else
{
throw new ApplicationException("unexpected state");
}
}
public IBoard Create(TypeOfGame kind)
{
IPieceFactory pieceFactory = new ChessPieceFactory();
switch (kind)
{
case TypeOfGame.Chess:
IBoard chessboard = new ChessboardModel(new ChessMovie());
//a1 - h1
chessboard.Fields[0, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Rook);
chessboard.Fields[1, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Knight);
chessboard.Fields[2, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Bishop);
chessboard.Fields[3, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Queen);
chessboard.Fields[4, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.King);
chessboard.Fields[5, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Bishop);
chessboard.Fields[6, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Knight);
chessboard.Fields[7, 0].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Rook);
//a2 - h2
for (int i = 0; i < 8; i++)
{
chessboard.Fields[i, 1].Piece = pieceFactory.Create(ColourOfPiece.White, KindOfPiece.Pawn);
}
//a7 - h7
for (int i = 0; i < 8; i++)
{
chessboard.Fields[i, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Pawn);
}
//a8 - h8
chessboard.Fields[0, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Rook);
chessboard.Fields[1, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Knight);
chessboard.Fields[2, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Bishop);
chessboard.Fields[3, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Queen);
chessboard.Fields[4, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.King);
chessboard.Fields[5, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Bishop);
chessboard.Fields[6, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Knight);
chessboard.Fields[7, 6].Piece = pieceFactory.Create(ColourOfPiece.Black, KindOfPiece.Rook);
return(chessboard);
case TypeOfGame.Checkers:
return(null);
default:
return(null);
}
}
private void ChangeRookPosition(Position kingPosition, ChessboardModel chessboard)
{
if (kingPosition.X == 2)
{
chessboard[3, kingPosition.Y].Piece = chessboard[0, kingPosition.Y].Piece;
chessboard[0, kingPosition.Y].Piece = null;
}
else if (kingPosition.X == 6)
{
chessboard[5, kingPosition.Y].Piece = chessboard[7, kingPosition.Y].Piece;
chessboard[7, kingPosition.Y].Piece = null;
}
else
{
throw new ApplicationException("unexpected staitment");
}
}
private void Castling(Field firstField, Field secondField, Position kingPosition, ChessboardModel chessboard)
{
secondField.Piece = firstField.Piece;
firstField.Piece = null;
ChangeRookPosition(kingPosition, chessboard);
}
private void IsCastlingDecoratorChange(Position firstPosition, Position secondPosition, ChessboardModel chessboard)
{
Field firstField = chessboard[firstPosition];
Field secondField = chessboard[secondPosition];
if (secondField.Piece?.CheckStrategy is IFirstMove)
{
CastlingDecoratorChanges(secondField.Piece, secondPosition, chessboard);
}
if (firstField.Piece.CheckStrategy is IFirstMove)
{
CastlingDecoratorChanges(firstField.Piece, firstPosition, chessboard);
}
}