X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=moves.c;h=2b6fd8a974007ef8cbdd0aa4d54778209a25c290;hb=1c03d229073e56dda9e5856db5adaae51576a3bb;hp=f8b7857af9df0c59976c0947467768c6ed33a8ba;hpb=7fc292a18170994d4213b561a2bdf0fe4aec458b;p=xboard.git diff --git a/moves.c b/moves.c index f8b7857..2b6fd8a 100644 --- a/moves.c +++ b/moves.c @@ -5,7 +5,7 @@ * Massachusetts. * * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006, - * 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. + * 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. * * Enhancements Copyright 2005 Alessandro Scotti * @@ -146,7 +146,8 @@ CopyBoard (Board to, Board from) for (i = 0; i < BOARD_HEIGHT; i++) for (j = 0; j < BOARD_WIDTH; j++) to[i][j] = from[i][j]; - for (j = 0; j < BOARD_FILES-1; j++) // [HGM] gamestate: copy castling rights and ep status + for (j = 0; j < BOARD_FILES; j++) // [HGM] gamestate: copy castling rights and ep status + to[VIRGIN][j] = from[VIRGIN][j], to[CASTLING][j] = from[CASTLING][j]; to[HOLDINGS_SET] = 0; // flag used in ICS play } @@ -519,7 +520,7 @@ GenPseudoLegal (Board board, int flags, MoveCallback callback, VOIDSTAR closure, } if(gameInfo.variant == VariantSpartan) rookRange = 2; // in Spartan Chess restrict range to modern Dababba goto doRook; - + /* Shogi Dragon King has to continue as Ferz after Rook moves */ case SHOGI WhiteDragon: case SHOGI BlackDragon: @@ -672,14 +673,14 @@ GenPseudoLegal (Board board, int flags, MoveCallback callback, VOIDSTAR closure, rf, ff, rf + 1, ff, closure); for (s = -1; s <= 1; s += 2) { if (rf < BOARD_HEIGHT-1 && ff + s >= BOARD_LEFT && ff + s < BOARD_RGHT && board[rf + 1][ff + s] == EmptySquare) - callback(board, flags, + callback(board, flags, rf >= BOARD_HEIGHT-1-promoRank ? WhitePromotion : NormalMove, rf, ff, rf + 1, ff + s, closure); if (rf == 1 && ff + 2*s >= BOARD_LEFT && ff + 2*s < BOARD_RGHT && board[3][ff + 2*s] == EmptySquare ) callback(board, flags, NormalMove, rf, ff, 3, ff + 2*s, closure); } break; - + case BlackLance: if(gameInfo.variant == VariantSuper) goto Amazon; if (rf > 0 && WhitePiece(board[rf - 1][ff])) @@ -688,7 +689,7 @@ GenPseudoLegal (Board board, int flags, MoveCallback callback, VOIDSTAR closure, rf, ff, rf - 1, ff, closure); for (s = -1; s <= 1; s += 2) { if (rf > 0 && ff + s >= BOARD_LEFT && ff + s < BOARD_RGHT && board[rf - 1][ff + s] == EmptySquare) - callback(board, flags, + callback(board, flags, rf <= promoRank ? BlackPromotion : NormalMove, rf, ff, rf - 1, ff + s, closure); if (rf == BOARD_HEIGHT-2 && ff + 2*s >= BOARD_LEFT && ff + 2*s < BOARD_RGHT && board[rf-2][ff + 2*s] == EmptySquare ) @@ -720,7 +721,7 @@ extern void GenLegalCallback P((Board board, int flags, ChessMove kind, int rf, int ff, int rt, int ft, VOIDSTAR closure)); -void +void GenLegalCallback (Board board, int flags, ChessMove kind, int rf, int ff, int rt, int ft, VOIDSTAR closure) { register GenLegalClosure *cl = (GenLegalClosure *) closure; @@ -1053,7 +1054,8 @@ LegalDrop (Board board, int flags, ChessSquare piece, int rt, int ft) if(appData.debugMode) fprintf(debugFP, "LegalDrop: %d @ %d,%d)\n", piece, ft, rt); if(board[rt][ft] != EmptySquare) return ImpossibleMove; // must drop to empty square n = PieceToNumber(piece); - if(gameInfo.holdingsWidth == 0 || (flags & F_WHITE_ON_MOVE ? board[n][BOARD_WIDTH-1] : board[BOARD_HEIGHT-1-n][0]) != piece) + if((gameInfo.holdingsWidth == 0 || (flags & F_WHITE_ON_MOVE ? board[n][BOARD_WIDTH-1] : board[BOARD_HEIGHT-1-n][0]) != piece) + && gameInfo.variant != VariantBughouse) // in bughouse we don't check for availability, because ICS doesn't always tell us return ImpossibleMove; // piece not available if(gameInfo.variant == VariantShogi) { // in Shogi lots of drops are forbidden! if((piece == WhitePawn || piece == WhiteQueen) && rt == BOARD_HEIGHT-1 || @@ -1102,7 +1104,7 @@ LegalityTest (Board board, int flags, int rf, int ff, int rt, int ft, int promoC if(quickFlag) flags = flags & ~1 | quickFlag & 1; // [HGM] speed: in quick mode quickFlag specifies side-to-move. if(rf == DROP_RANK) return LegalDrop(board, flags, ff, rt, ft); piece = filterPiece = board[rf][ff]; - if(PieceToChar(piece) == '~') filterPiece = DEMOTED piece; + if(PieceToChar(piece) == '~') filterPiece = DEMOTED piece; /* [HGM] Cobra and Falcon are wildcard pieces; consider all their moves legal */ /* (perhaps we should disallow moves that obviously leave us in check?) */ @@ -1126,9 +1128,11 @@ LegalityTest (Board board, int flags, int rf, int ff, int rt, int ft, int promoC if(gameInfo.variant == VariantSChess && promoChar && promoChar != '=' && board[rf][ff] != WhitePawn && board[rf][ff] != BlackPawn) { if(board[rf][ff] < BlackPawn) { // white if(rf != 0) return IllegalMove; // must be on back rank + if(!(board[VIRGIN][ff] & VIRGIN_W)) return IllegalMove; // non-virgin if(board[PieceToNumber(CharToPiece(ToUpper(promoChar)))][BOARD_WIDTH-2] == 0) return ImpossibleMove;// must be in stock } else { if(rf != BOARD_HEIGHT-1) return IllegalMove; + if(!(board[VIRGIN][ff] & VIRGIN_B)) return IllegalMove; // non-virgin if(board[BOARD_HEIGHT-1-PieceToNumber(CharToPiece(ToLower(promoChar)))][1] == 0) return ImpossibleMove; } } else @@ -1147,7 +1151,7 @@ if(appData.debugMode)fprintf(debugFP,"SHOGI promoChar = %c\n", promoChar ? promo return CharToPiece(promoChar) == EmptySquare ? ImpossibleMove : IllegalMove; else if(flags & F_WHITE_ON_MOVE) { if( (int) piece < (int) WhiteWazir && - (rf >= BOARD_HEIGHT*2/3 || rt >= BOARD_HEIGHT*2/3) ) { + (rf >= BOARD_HEIGHT - BOARD_HEIGHT/3 || rt >= BOARD_HEIGHT - BOARD_HEIGHT/3) ) { if( (piece == WhitePawn || piece == WhiteQueen) && rt > BOARD_HEIGHT-2 || piece == WhiteKnight && rt > BOARD_HEIGHT-3) /* promotion mandatory */ cl.kind = promoChar == '=' ? IllegalMove : WhitePromotion; @@ -1331,14 +1335,23 @@ Disambiguate (Board board, int flags, DisambiguateClosure *closure) GenLegal(board, flags|F_IGNORE_CHECK, DisambiguateCallback, (VOIDSTAR) closure, closure->pieceIn); if (closure->count == 0) { /* No, it's not even that */ + if(!appData.testLegality && closure->pieceIn != EmptySquare) { + int f, r; // if there is only a single piece of the requested type on the board, use that + closure->rt = closure->rtIn, closure->ft = closure->ftIn; + for(r=0; rpieceIn) closure->count++, closure->rf = r, closure->ff = f; + if(closure->count > 1) illegal = 0; // ambiguous + } + if(closure->count == 0) { if (appData.debugMode) { int i, j; for(i=BOARD_HEIGHT-1; i>=0; i--) { for(j=0; jpiece != WhitePawn && closure->piece != BlackPawn) { if(closure->piece < BlackPawn) { // white if(closure->rf != 0) closure->kind = IllegalMove; // must be on back rank + if(!(board[VIRGIN][closure->ff] & VIRGIN_W)) closure->kind = IllegalMove; // non-virgin if(board[PieceToNumber(CharToPiece(ToUpper(c)))][BOARD_WIDTH-2] == 0) closure->kind = ImpossibleMove;// must be in stock } else { if(closure->rf != BOARD_HEIGHT-1) closure->kind = IllegalMove; + if(!(board[VIRGIN][closure->ff] & VIRGIN_B)) closure->kind = IllegalMove; // non-virgin if(board[BOARD_HEIGHT-1-PieceToNumber(CharToPiece(ToLower(c)))][1] == 0) closure->kind = ImpossibleMove; } } else @@ -1368,7 +1383,7 @@ Disambiguate (Board board, int flags, DisambiguateClosure *closure) piece == WhiteKnight && closure->rt > BOARD_HEIGHT-3) /* promotion mandatory */ closure->kind = c == '=' ? IllegalMove : WhitePromotion; else /* promotion optional, default is defer */ - closure->kind = c == '+' ? WhitePromotion : WhiteNonPromotion; + closure->kind = c == '+' ? WhitePromotion : WhiteNonPromotion; } else closure->kind = c == '+' ? IllegalMove : NormalMove; } else { if( (int) piece < (int) BlackWazir && (closure->rf < BOARD_HEIGHT/3 || closure->rt < BOARD_HEIGHT/3) ) { @@ -1614,7 +1629,7 @@ CoordsToAlgebraic (Board board, int flags, int rf, int ff, int rt, int ft, int p /* [HGM] in Shogi non-pawns can promote */ *outp++ = promoChar; // Don't bother to correct move type, return value is never used! } - else if (gameInfo.variant != VariantSuper && promoChar && + else if (gameInfo.variant != VariantSuper && promoChar && (piece == WhiteLance || piece == BlackLance) ) { // Lance sometimes represents Pawn *outp++ = '='; *outp++ = ToUpper(promoChar); @@ -1625,7 +1640,7 @@ CoordsToAlgebraic (Board board, int flags, int rf, int ff, int rt, int ft, int p } *outp = NULLCHAR; return cl.kind; - + case EmptySquare: /* Moving a nonexistent piece */ break;