public bool CheckAndMakeAMove(ChessMove move)
{
if (plField.CheckEmpty(move.StartY, move.StartX) || !plField[move.StartY, move.StartX].CheckMove(move))
{
return(false);
}
ChessFigure capturedFigure = plField[move.EndY, move.EndX];
MakeOrCancelAMove(move);
if (IsWhitesTurn ? WhiteKing.IsChecked : BlackKing.IsChecked)
{
Console.WriteLine("----------------------------------------");
MakeOrCancelAMove(move.Reverse(), capturedFigure);
return(false);
}
else
{
if (OppositeKing.IsChecked)
{
TryToCheckmateOppositeKing();
}
CheckAvailableMoves();
IsWhitesTurn = !IsWhitesTurn;
return(true);
}
}
private void MakeOrCancelAMove(ChessMove move, ChessFigure capturedFigure = null)
{
if (plField[move.StartY, move.StartX].IsKing())
{
if (plField[move.StartY, move.StartX].IsWhite())
{
whiteKingX = move.EndX;
whiteKingY = move.EndY;
}
else
{
blackKingX = move.EndX;
blackKingY = move.EndY;
}
}
plField[move.EndY, move.EndX] = plField[move.StartY, move.StartX];
plField[move.StartY, move.StartX] = capturedFigure;
ResetKingsChecks();
CalculateAvailableMoves();
TryCheckKings();
Console.WriteLine("White king is in check: {0}", WhiteKing.IsChecked);
Console.WriteLine("Black king is in check: {0}", BlackKing.IsChecked);
}
public void TryCheckBy(ChessFigure figure, int Y, int X)
{
foreach (var move in figure.AvailableMoves)
{
if (move.EndX == X && move.EndY == Y)
{
IsChecked = true;
}
}
}
public void CheckAvailableMoves()
{
ChessPlayingField tempPlField = plField.Clone() as ChessPlayingField;
int tempWhiteKingX = whiteKingX, tempWhiteKingY = whiteKingY;
int tempBlackKingX = blackKingX, tempBlackKingY = blackKingY;
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if (!plField.CheckEmpty(i, j))
{
foreach (var move in plField[i, j].AvailableMoves)
{
if (plField.CheckEmpty(move.EndY, move.EndX) || !plField[move.EndY, move.EndX].IsKing())
{
ChessFigure capturedFigure = plField[move.EndY, move.EndX];
MakeOrCancelAMove(move);
Console.WriteLine("----------------------------------------");
if (OppositeKing.IsChecked)
{
tempPlField[i, j].AvailableMoves.Remove(move);
}
MakeOrCancelAMove(move.Reverse(), capturedFigure);
}
}
}
}
}
plField = tempPlField;
whiteKingX = tempWhiteKingX;
whiteKingY = tempWhiteKingY;
blackKingX = tempBlackKingX;
blackKingY = tempBlackKingY;
}
public void TryToCheckmateOppositeKing()
{
if (!OppositeKing.IsChecked)
{
throw new ArgumentException("Must be checked", "ChessKing king");
}
bool kingCanBeUnchecked = false;
for (int i = 0; i < 8 && !kingCanBeUnchecked; i++)
{
for (int j = 0; j < 8 && !kingCanBeUnchecked; j++)
{
if (!plField.CheckEmpty(i, j) && OppositeKing.IsSameColourAs(plField[i, j]))
{
foreach (var move in plField[i, j].AvailableMoves)
{
ChessFigure capturedFigure = plField[move.EndY, move.EndX];
MakeOrCancelAMove(move);
if (!OppositeKing.IsChecked)
{
Console.WriteLine("Uncheck: {0}, {1}, {2}, {3}", move.StartY, move.StartX, move.EndY, move.EndX);
kingCanBeUnchecked = true;
MakeOrCancelAMove(move.Reverse(), capturedFigure);
break;
}
Console.WriteLine("----------------------------------------");
MakeOrCancelAMove(move.Reverse(), capturedFigure);
}
}
}
}
OppositeKing.IsCheckmated = !kingCanBeUnchecked;
}
public bool IsSameColourAs(ChessFigure figure)
{
return(IsWhite() == figure.IsWhite());
}
