/// <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>
/// 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>
/// 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);
}