public void UnMovePiece(Move move)
{
Position to = move.To;
Position from = move.From;
// Pawn demotion
if (move.Promotion)
{
Board.DemotePawn(move);
}
if (move.Piece is King)
{
King king = move.Piece as King;
if (move.Piece.MoveCount == 1)
{
if (king.Color == PieceColor.White)
{
Board.UpdatePieceEnum(king, PieceEnum.WhiteKing);
}
else if (king.Color == PieceColor.Black)
{
Board.UpdatePieceEnum(king, PieceEnum.BlackKing);
}
}
if (move.Castle)
{
Board.MovePiece(move.CastleMove.To, move.CastleMove.From);
move.CastleMove.Piece.MoveCount--;
}
}
Board.MovePiece(to, from);
move.Piece.MoveCount--;
if (!(move.Capture is Empty))
{
Board.AddPiece(move.Capture.Position.Row, move.Capture.Position.Col, move.Capture);
}
if (progress.Count > 0)
{
progress.Pop();
}
if (moves.Count > 0)
{
moves.Pop();
}
if (prevHashes.Count > 0)
{
prevHashes.Pop();
}
if (CurrentTurn == PieceColor.White)
{
CurrentTurn = PieceColor.Black;
if (moves.Count > 0 && moves.Peek().EnPassantMove)
{
Board.UpdatePieceEnum(moves.Peek().Piece, PieceEnum.WhitePawnEnPassant);
}
}
else
{
CurrentTurn = PieceColor.White;
if (moves.Count > 0 && moves.Peek().EnPassantMove)
{
Board.UpdatePieceEnum(moves.Peek().Piece, PieceEnum.BlackPawnEnPassant);
}
}
}
internal void MovePiece(Move move)
{
Position to = move.To;
Position from = move.From;
if (move.Capture is King)
{
Debug.WriteLine("Not supposed to happen!");
}
// Pawn promotion
if (move.Promotion)
{
Board.PromotePawn(move);
}
if (move.Piece is Pawn)
{
Pawn pawn = move.Piece as Pawn;
if (move.EnPassantMove && pawn.Color == PieceColor.White)
{
Board.UpdatePieceEnum(pawn, PieceEnum.WhitePawnEnPassant);
}
else if (move.EnPassantMove && pawn.Color == PieceColor.Black)
{
Board.UpdatePieceEnum(pawn, PieceEnum.BlackPawnEnPassant);
}
}
if (move.Piece is King)
{
King king = move.Piece as King;
if (move.Castle)
{
Board.MovePiece(move.CastleMove.From, move.CastleMove.To);
move.CastleMove.Piece.MoveCount++;
}
if (king.Color == PieceColor.White)
{
Board.UpdatePieceEnum(king, PieceEnum.WhiteKingNoCastle);
}
else if (king.Color == PieceColor.Black)
{
Board.UpdatePieceEnum(king, PieceEnum.BlackKingNoCastle);
}
}
if (!(move.Piece is Pawn) || move.Capture is Empty)
{
if (progress.Count > 0)
{
progress.Push(progress.Peek() + 1);
}
else
{
progress.Push(1);
}
}
else
{
progress.Push(0);
}
if (!(move.Capture is Empty))
{
Board.RemovePiece(move.Capture.Position.Row, move.Capture.Position.Col);
}
Board.MovePiece(from, to);
move.Piece.MoveCount++;
moves.Push(move);
prevHashes.Push(Board.Hash);
if (CurrentTurn == PieceColor.White)
{
CurrentTurn = PieceColor.Black;
ClearPassant(PieceColor.Black);
}
else
{
CurrentTurn = PieceColor.White;
ClearPassant(PieceColor.White);
}
if (IsThreatened(Board.GetKing(CurrentTurn)))
{
move.CheckBonus = true;
}
}