Result RacingKingsBoard::result()
{
QString str;
bool blackFinished = finished(Side::Black);
bool whiteFinished = finished(Side::White);
// Finishing on eighth rank
if (blackFinished && whiteFinished)
{
str = tr("Drawn race");
return Result(Result::Draw, Side::NoSide, str);
}
if (blackFinished)
{
str = tr("Black wins the race");
return Result(Result::Win, Side::Black, str);
}
Side side = sideToMove();
bool mobile = canMove();
// White finished but Black cannot finish or forfeited the chance
if (whiteFinished
&& ((mobile && !canFinish(Side::Black)) || side == Side::White))
{
str = tr("White wins the race");
return Result(Result::Win, Side::White, str);
}
// Stalemate
if (!mobile)
{
str = tr("Draw by stalemate");
return Result(Result::Draw, Side::NoSide, str);
}
// 50 move rule
if (reversibleMoveCount() >= 100)
{
str = tr("Draw by fifty moves rule");
return Result(Result::Draw, Side::NoSide, str);
}
// 3-fold repetition
if (repeatCount() >= 2)
{
str = tr("Draw by 3-fold repetition");
return Result(Result::Draw, Side::NoSide, str);
}
return Result();
}
Result LosersBoard::result()
{
Side winner;
QString str;
// Checkmate/Stalemate
if (!canMove())
{
winner = sideToMove();
str = tr("%1 gets mated").arg(winner.toString());
return Result(Result::Win, winner, str);
}
// Lost all pieces
int pieceCount = 0;
for (int i = 0; i < arraySize(); i++)
{
if (pieceAt(i).side() == sideToMove()
&& ++pieceCount > 1)
break;
}
if (pieceCount <= 1)
{
winner = sideToMove();
str = tr("%1 lost all pieces").arg(winner.toString());
return Result(Result::Win, winner, str);
}
// 50 move rule
if (reversibleMoveCount() >= 100)
{
str = tr("Draw by fifty moves rule");
return Result(Result::Draw, Side::NoSide, str);
}
// 3-fold repetition
if (repeatCount() >= 2)
{
str = tr("Draw by 3-fold repetition");
return Result(Result::Draw, Side::NoSide, str);
}
return Result();
}
