Exemple #1
0
Move MoveGen::next()
{
    Move res;
loop:
    switch( *phPtr )
    {
    case mpHash:
        res = killer->hashMove;
        phPtr++;
        if ( !res || !(board.inCheck() ? board.isLegal<1,0>( res, pins() ) : board.isLegal<0,0>( res, pins() ) ) )
            goto loop;

        genMoves[ genMoveCount++ ] = res;
        break;
    case mpKiller1:
        res = killer->killers[0];
        phPtr++;
        if ( !res || alreadyGenerated(res) ||
                !(board.inCheck() ? board.isLegal<1,1>( res, pins() ) : board.isLegal<0,1>( res, pins() ) ) )
            goto loop;
        genMoves[ genMoveCount++ ] = res;
        break;
    case mpKiller2:
        res = killer->killers[1];
        phPtr++;
        if ( !res || alreadyGenerated(res) ||
                !(board.inCheck() ? board.isLegal<1,1>( res, pins() ) : board.isLegal<0,1>( res, pins() ) ) )
            goto loop;
        genMoves[ genMoveCount++ ] = res;
        break;
    case mpCapNoSort:
        count = generateCaptures( board, moveBuf );
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpCap:
        count = generateCaptures( board, moveBuf );
        index = badCapCount = 0;
        scoreCaptures();
        phPtr++;
        goto loop;
        break;
    case mpBadCap:
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpQCap:
        count = generateCaptures( board, moveBuf, 0 );
        index = 0;
        scoreCaptures();
        phPtr++;
        goto loop;
        break;
    case mpQChecks:
        count = board.turn() == ctWhite ?
                generateChecks< ctWhite >( moveBuf ) : generateChecks< ctBlack >( moveBuf );
        scoreChecks();
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpCastling:
        assert( board.canCastle() );
        index = 0;
        count = board.turn() == ctWhite ?
                generateCastling< ctWhite >( board, moveBuf )
                : generateCastling< ctBlack >( board, moveBuf );
        phPtr++;
        goto loop;
        break;
    case mpQuietNoSort:
        count = generateQuiet( board, moveBuf );
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpQuiet:
        count = generateQuiet( board, moveBuf );
        scoreQuiet();
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpEvasNoSort:
        count = generateEvasions( board, moveBuf );
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpEvas:
        count = generateEvasions( board, moveBuf );
        scoreEvasions();
        index = 0;
        phPtr++;
        goto loop;
        break;
    case mpCapBuffer:
        // here we'll ocassionally move to badcaps so it's different
        do
        {
loopcap:
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];

            if ( alreadyGenerated(res) )
                goto loopcap;

            // do fast(sign) see
            if ( board.see<1>(res) < 0 )
            {
                // bad capture detected
                assert( badCapCount < maxCaptures );
                badCaps[ badCapCount++ ] = res;
                goto loopcap;
            }
        } while( !board.pseudoIsLegal<0>( res, pin ) );
        break;
    case mpQCapBuffer:
        // here we'll ocassionally move to badcaps so it's different
        do
        {
qloopcap:
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];

            if ( alreadyGenerated(res) )
                goto qloopcap;

            // do fast(sign) see
            if ( board.see<1>( res ) < 0 )
                // bad capture detected
                goto qloopcap;
        } while( !board.pseudoIsLegal<0>( res, pin ) );
        break;
    case mpCastlingBuffer:
        if ( index >= count )
        {
            phPtr++;
            goto loop;
        }
        res = moveBuf[ index++ ];
        if ( alreadyGenerated(res) )
            goto loop;
        break;
    case mpCastlingBufferLegal:
        if ( index >= count )
        {
            phPtr++;
            goto loop;
        }
        res = moveBuf[ index++ ];
        break;
    case mpEvasBuffer:
        do
        {
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];
        } while ( alreadyGenerated(res) || !board.pseudoIsLegal<1>( res, pin ) );
        break;
    case mpEvasBufferLegal:
        do
        {
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];
        } while ( !board.pseudoIsLegal<1>( res, pin ) );
        break;
    case mpBufferLegal:
        do
        {
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];
        } while ( !board.pseudoIsLegal<0>( res, pin ) );
        break;
    case mpQuietBuffer:
        do
        {
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];
        } while ( alreadyGenerated(res) || !board.pseudoIsLegal<0>( res, pin ) );
        break;
    case mpQChecksBuffer:
        do
        {
checksloop:
            if ( index >= count )
            {
                phPtr++;
                goto loop;
            }
            res = moveBuf[ index++ ];
            if ( alreadyGenerated(res) )
                goto checksloop;
            if ( MovePack::isCastling(res) )
                break;
            if ( board.see<1>( res ) < 0 )
                continue;						// skip bad see checks
        } while ( !board.pseudoIsLegal<0>( res, pin ) );
        assert( board.isCheck( res, dcMask ) );
        break;
    case mpBadCapBuffer:
        do
        {
            if ( index >= badCapCount )
            {
                phPtr++;
                goto loop;
            }
            res = badCaps[ index++ ];
        } while( alreadyGenerated(res) || !board.pseudoIsLegal<0>( res, pin ) );
        break;
    default:			//case mpDone:
        res = mcNone;
        break;
    }
    return res & mmNoScore;				// remove score
}
Exemple #2
0
Move MoveGen::next()
{
	Move res;
loop:
	switch( *phPtr )
	{
	case mpCapNoSort:
		count = generateCaptures( board, moveBuf );
		index = 0;
		phPtr++;
		goto loop;
		break;
	case mpCastling:
		assert( board.canCastle() );
		index = 0;
		count = board.turn() == ctWhite ?
			generateCastling< ctWhite >( board, moveBuf )
			: generateCastling< ctBlack >( board, moveBuf );
		phPtr++;
		goto loop;
		break;
	case mpQuietNoSort:
		count = generateQuiet( board, moveBuf );
		index = 0;
		phPtr++;
		goto loop;
		break;
	case mpEvasNoSort:
		count = generateEvasions( board, moveBuf );
		index = 0;
		phPtr++;
		goto loop;
		break;
	case mpCastlingBuffer:
		if ( index >= count )
		{
			phPtr++;
			goto loop;
		}
		res = moveBuf[ index++ ];
		break;
	case mpEvasBuffer:
		do
		{
			if ( index >= count )
			{
				phPtr++;
				goto loop;
			}
			res = moveBuf[ index++ ];
        } while ( !board.pseudoIsLegal<1>( res, pin ) );
		break;
	case mpCapBufferNoSort:
	case mpQuietBuffer:
		do
		{
			if ( index >= count )
			{
				phPtr++;
				goto loop;
			}
			res = moveBuf[ index++ ];
        } while ( !board.pseudoIsLegal<0>( res, pin ) );
		break;
	default:            //case mpDone:
		res = mcNone;
		break;
	}
	return res & mmNoScore;				// remove score
}