public void UndoMove(Move m)
{
Square from = m.From();
Square to = m.To();
bool promote = m.Promote();
// 手番変更
sideToMove = (sideToMove == Color.BLACK) ? Color.WHITE : Color.BLACK;
int tKind = square[(int)to];
int fKind = IsDrop(from) ? sideToMove == Color.BLACK ? (int)from : (int)from + Piece.WhiteBit
: (promote ? tKind - Piece.PromoteBit : tKind);
int capture = m.Capture();
square[(int)to] = capture;
if (IsDrop(from))
{
stand[(int)sideToMove][(int)from]++;
}
else
{
square[(int)from] = fKind;
int capKind = Piece.Abs(capture);
if (capture != Piece.Empty && capKind != Piece.BK)
{
if (capKind == Piece.BPP)
{
capKind -= Piece.PromoteBit;
}
stand[(int)sideToMove][capKind]--;
}
if (Piece.Abs(tKind) == Piece.BK)
{
kingPos[(int)sideToMove] = from;
}
}
Debug.Assert(SquareIs(KingPos(Color.BLACK)) == Piece.BK);
Debug.Assert(SquareIs(KingPos(Color.WHITE)) == Piece.WK);
}
public bool DoMove(Move m)
{
Square from = m.From();
Square to = m.To();
bool promote = m.Promote();
int fKind = IsDrop(from) ? sideToMove == Color.BLACK ? (int)from : (int)from + Piece.WhiteBit
: square[(int)from];
int tKind = fKind + (promote ? Piece.PromoteBit : 0);
int capture = square[(int)to];
square[(int)to] = tKind;
// 2回書き込まないようにする
if (m.Capture() == 0)
{
m.AddCapture(capture);
}
if (IsDrop(from))
{
stand[(int)sideToMove][(int)from]--;
}
else
{
square[(int)from] = Piece.Empty;
if (capture != Piece.Empty)
{
if (Piece.Abs(capture) != Piece.BK)
{
if (Piece.Abs(capture) != Piece.BPP)
{
stand[(int)sideToMove][Piece.Abs(capture)]++;
}
else
{
stand[(int)sideToMove][Piece.BP]++;
}
}
}
if (Piece.Abs(fKind) == Piece.BK)
{
kingPos[(int)sideToMove] = to;
}
}
Debug.Assert((Piece.Abs(capture) == Piece.BK) || SquareIs(KingPos(Color.BLACK)) == Piece.BK);
Debug.Assert((Piece.Abs(capture) == Piece.BK) || SquareIs(KingPos(Color.WHITE)) == Piece.WK);
// 手番変更
sideToMove = (sideToMove == Color.BLACK) ? Color.WHITE : Color.BLACK;
// トライ勝ち
if (Piece.Abs(fKind) == Piece.BK)
{
if (sideToMove == Color.WHITE && Square.SQ_08 < to && to < Square.SQ_12)
{
return(true);
}
if (sideToMove == Color.BLACK && Square.SQ_20 < to && to < Square.SQ_24)
{
return(true);
}
}
return((capture == Piece.BK || capture == Piece.WK) ? true : false);
}
