/// <summary>
/// Checks if last play was a castling and move the respective tower
/// </summary>
/// <param name="king">King</param>
private void ExecuteCastling(Piece king)
{
Piece tower = null;
Position origin = null;
Position target = null;
if (king.Position.Column == 6)
{
tower = Board.Piece(king.Position.Row, king.Position.Column + 1);
if (tower.NumberOfMovements == 0)
{
origin = tower.Position;
target = new Position(king.Position.Row, king.Position.Column - 1);
Board.RemovePiece(origin);
Board.PutPiece(tower, target);
StringBuilder text = new StringBuilder();
text.AppendLine("Execute castling piece");
text.AppendLine(string.Concat("Piece: ", tower.GetType()));
text.AppendLine(string.Concat("Color: ", tower.Color.ToString()));
text.AppendLine(string.Concat("Origin ChessPosition: ", origin.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", origin.Column, ", ", origin.Row));
text.AppendLine(string.Concat("Target ChessPosition: ", target.ToChessPosition().ToString(), " Target CanvasPosition(Column, Row): ", target.Column, ", ", target.Row));
text.AppendLine(string.Concat("Turn: ", TotalMoves));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
tower.IncrementMovements();
}
}
else if (king.Position.Column == 2)
{
tower = Board.Piece(king.Position.Row, king.Position.Column - 2);
if (tower.NumberOfMovements == 0)
{
origin = tower.Position;
target = new Position(king.Position.Row, king.Position.Column + 1);
Board.RemovePiece(origin);
Board.PutPiece(tower, target);
StringBuilder text = new StringBuilder();
text.AppendLine("Execute castling piece");
text.AppendLine(string.Concat("Piece: ", tower.GetType()));
text.AppendLine(string.Concat("Color: ", tower.Color.ToString()));
text.AppendLine(string.Concat("Origin ChessPosition: ", origin.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", origin.Column, ", ", origin.Row));
text.AppendLine(string.Concat("Target ChessPosition: ", target.ToChessPosition().ToString(), " Target CanvasPosition(Column, Row): ", target.Column, ", ", target.Row));
text.AppendLine(string.Concat("Turn: ", TotalMoves));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
tower.IncrementMovements();
}
}
if (KingIsCheck(king.Color) && origin != null)
{
UndoMovement(origin, target, null);
}
}
/// <summary>
/// builder to start the match
/// </summary>
public ChessMatch()
{
StringBuilder text = new StringBuilder(string.Concat("START MATCH ", DateTime.Now.ToShortDateString()));
text.AppendLine(string.Concat(" Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
Board = new Board(8, 8);
TotalMoves = 1;
CurrentPlayer = Color.White;
Pieces = new HashSet <Piece>();
CapturedPieces = new HashSet <Piece>();
IsCheck = false;
EnableEnPassant = null;
BuildPieces();
}
/// <summary>
/// Put piece
/// </summary>
/// <param name="piece">Piece</param>
/// <param name="column">Column</param>
/// <param name="line">Row</param>
private void PutPiece(Piece piece, char column, int line)
{
Board.PutPiece(piece, new ChessPosition(column, line).ToPosition());
Pieces.Add(piece);
StringBuilder text = new StringBuilder();
text.AppendLine("Put piece");
text.AppendLine(string.Concat("Piece: ", piece.GetType()));
text.AppendLine(string.Concat("Color: ", piece.Color.ToString()));
text.AppendLine(string.Concat("ChessPosition: ", column, line, " CanvasPosition(Column, Row): ", piece.Position.Column, piece.Position.Row));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
}
/// <summary>
/// Execute move of chess piece
/// </summary>
/// <param name="origin">Origin of piece</param>
/// <param name="target">Target position</param>
public Piece ExecuteMove(Position origin, Position target)
{
Piece piece = Board.RemovePiece(origin);
Piece capturedPiece = Board.RemovePiece(target);
Board.PutPiece(piece, target);
// Log
StringBuilder text = new StringBuilder();
text.AppendLine("Move piece");
text.AppendLine(string.Concat("Piece: ", piece.GetType()));
text.AppendLine(string.Concat("Color: ", piece.Color.ToString()));
text.AppendLine(string.Concat("Origin ChessPosition: ", origin.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", origin.Column, ", ", origin.Row));
text.AppendLine(string.Concat("Target ChessPosition: ", target.ToChessPosition().ToString(), " Target CanvasPosition(Column, Row): ", target.Column, ", ", target.Row));
text.AppendLine(string.Concat("Turn: ", TotalMoves));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
piece.IncrementMovements();
if (capturedPiece != null)
{
CapturedPieces.Add(capturedPiece);
text.AppendLine(string.Concat("Captured: ", capturedPiece.GetType()));
}
WriteLog.ChecksLogs(text);
if (Board.Piece(target) is King && ((target.Column + 2 == origin.Column) || (target.Column - 2 == origin.Column)))
{
ExecuteCastling(Board.Piece(target));
}
if (Board.Piece(target) != null && Board.Piece(target) is Pawn && origin.Column != target.Column && capturedPiece == null)
{
capturedPiece = ExecuteEnPassant(Board.Piece(target), origin);
}
if (capturedPiece != null)
{
CapturedPieces.Add(capturedPiece);
}
return(capturedPiece);
}
/// <summary>
/// Sets initial position of pices on the board.
/// </summary>
private void BuildPieces()
{
// Blacks
PutPiece(new Rook(Board, Color.Black), 'a', 8);
PutPiece(new Knight(Board, Color.Black), 'b', 8);
PutPiece(new Bishop(Board, Color.Black), 'c', 8);
PutPiece(new Queen(Board, Color.Black), 'd', 8);
PutPiece(new King(Board, Color.Black, this), 'e', 8);
PutPiece(new Bishop(Board, Color.Black), 'f', 8);
PutPiece(new Knight(Board, Color.Black), 'g', 8);
PutPiece(new Rook(Board, Color.Black), 'h', 8);
PutPiece(new Pawn(Board, Color.Black, this), 'a', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'b', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'c', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'd', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'e', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'f', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'g', 7);
PutPiece(new Pawn(Board, Color.Black, this), 'h', 7);
// Whites
PutPiece(new Rook(Board, Color.White), 'a', 1);
PutPiece(new Knight(Board, Color.White), 'b', 1);
PutPiece(new Bishop(Board, Color.White), 'c', 1);
PutPiece(new Queen(Board, Color.White), 'd', 1);
PutPiece(new King(Board, Color.White, this), 'e', 1);
PutPiece(new Bishop(Board, Color.White), 'f', 1);
PutPiece(new Knight(Board, Color.White), 'g', 1);
PutPiece(new Rook(Board, Color.White), 'h', 1);
PutPiece(new Pawn(Board, Color.White, this), 'a', 2);
PutPiece(new Pawn(Board, Color.White, this), 'b', 2);
PutPiece(new Pawn(Board, Color.White, this), 'c', 2);
PutPiece(new Pawn(Board, Color.White, this), 'd', 2);
PutPiece(new Pawn(Board, Color.White, this), 'e', 2);
PutPiece(new Pawn(Board, Color.White, this), 'f', 2);
PutPiece(new Pawn(Board, Color.White, this), 'g', 2);
PutPiece(new Pawn(Board, Color.White, this), 'h', 2);
StringBuilder text = new StringBuilder();
text.AppendLine(string.Concat("Finished put: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
}
/// <summary>
/// Undo the movement itself that would put in check
/// </summary>
/// <param name="piece">Current piece</param>
/// <param name="capturedPiece">Captured piece</param>
/// <param name="origin">Origin of current piece</param>
private void UndoMovement(Position origin, Position target, Piece captured)
{
Piece piece = Board.RemovePiece(target);
piece.DecrementMovements();
StringBuilder text = new StringBuilder();
Position originAux = null;
if (captured != null)
{
text.AppendLine("Undo captured");
text.AppendLine(string.Concat("Captured Piece: ", captured.GetType()));
text.AppendLine(string.Concat("Color: ", captured.Color.ToString()));
if (captured != EnableEnPassant)
{
Board.PutPiece(captured, target);
text.AppendLine(string.Concat("Origin ChessPosition: ", origin.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", origin.Column, ", ", origin.Row));
CapturedPieces.Remove(captured);
}
else
{
originAux = new Position(origin.Row, target.Column);
Board.PutPiece(captured, originAux);
CapturedPieces.Remove(captured);
text.AppendLine(string.Concat("Origin ChessPosition: ", originAux.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", originAux.Column, ", ", originAux.Row));
}
text.AppendLine(string.Concat("Turn: ", TotalMoves));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
text.AppendLine();
}
Board.PutPiece(piece, origin);
text.AppendLine(string.Concat("Undo Piece: ", captured.GetType()));
text.AppendLine(string.Concat("Color: ", captured.Color.ToString()));
text.AppendLine(string.Concat("Origin ChessPosition: ", origin.ToChessPosition().ToString(), " Origin CanvasPosition(Column, Row): ", origin.Column, ", ", origin.Row));
text.AppendLine(string.Concat("Turn: ", TotalMoves));
text.AppendLine(string.Concat("Date: ", DateTime.Now.ToShortDateString(), " Time: ", DateTime.Now.ToShortTimeString()));
WriteLog.ChecksLogs(text);
}
/// <summary>
/// Checks is pawn can promotion
/// </summary>
/// <param name="color">To checks if a black or white</param>
public void MakePromotion(Color color)
{
if (color is Color.Black)
{
if (Position.Row == 7)
{
Console.WriteLine("This pawn was promote, you can promotion a new piece.");
Console.WriteLine("Choose any T: Tower, B: Bishop, N: Knight and Q: Queen: ");
string choose = Console.ReadLine().ToUpper();
Promotions promotion = 0;
if (Enum.TryParse <Promotions>(choose, out promotion))
{
Position pos = Position;
Board.RemovePiece(Position);
switch (promotion)
{
case Promotions.T:
Board.PutPiece(new Rook(Board, color), pos);
break;
case Promotions.B:
Board.PutPiece(new Bishop(Board, color), pos);
break;
case Promotions.N:
Board.PutPiece(new Knight(Board, color), pos);
break;
case Promotions.Q:
Board.PutPiece(new Queen(Board, color), pos);
break;
}
}
else
{
throw new BoardException("Invalid promotion");
}
}
}
else if (color is Color.White)
{
if (Position.Row == 0)
{
Console.WriteLine("This pawn was promote, you can promotion a new piece.");
Console.WriteLine("Choose any T: Tower, B: Bishop, N: Knight and Q: Queen: ");
string choose = Console.ReadLine().ToUpper();
Promotions promotion;
if (Enum.TryParse(choose, out promotion))
{
Position pos = Position;
Board.RemovePiece(Position);
StringBuilder text = new StringBuilder();
switch (promotion)
{
case Promotions.T:
Rook rook = new Rook(Board, color);
Board.PutPiece(rook, pos);
text.AppendLine(string.Concat("Promote pawn to: ", rook.GetType()));
text.AppendLine(string.Concat("ChessPosition: ", rook.Position.ToChessPosition(), " CanvasPosition(Column, Row): ", rook.Position.Column, ", ", rook.Position.Row));
break;
case Promotions.B:
Bishop bishop = new Bishop(Board, color);
Board.PutPiece(bishop, pos);
text.AppendLine(string.Concat("Promote pawn to: ", bishop.GetType()));
text.AppendLine(string.Concat("ChessPosition: ", bishop.Position.ToChessPosition(), " CanvasPosition(Column, Row): ", bishop.Position.Column, ", ", bishop.Position.Row));
break;
case Promotions.N:
Knight knight = new Knight(Board, color);
Board.PutPiece(knight, pos);
text.AppendLine(string.Concat("Promote pawn to: ", knight.GetType()));
text.AppendLine(string.Concat("ChessPosition: ", knight.Position.ToChessPosition(), " CanvasPosition(Column, Row): ", knight.Position.Column, ", ", knight.Position.Row));
break;
case Promotions.Q:
Queen queen = new Queen(Board, color);
Board.PutPiece(queen, pos);
text.AppendLine(string.Concat("Promote pawn to: ", queen.GetType()));
text.AppendLine(string.Concat("ChessPosition: ", queen.Position.ToChessPosition(), " CanvasPosition(Column, Row): ", queen.Position.Column, ", ", queen.Position.Row));
break;
}
text.AppendLine(string.Concat("Color: ", color));
WriteLog.ChecksLogs(text);
}
else
{
throw new BoardException("Invalid promotion");
}
}
}
}
