From: H.G. Muller Date: Fri, 15 Jan 2010 13:40:43 +0000 (+0100) Subject: Fix reading FEN castling rights for knightmate and twokings X-Git-Tag: master-20100118~5 X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=34a1ee8183b6ffa6f91a019097a8a6d4290dd331;p=xboard.git Fix reading FEN castling rights for knightmate and twokings Scanning the back-rank for a King did not work in these variants, because either the Unicorn castles, or there might be two Kings. --- diff --git a/backend.c b/backend.c index 8c76afd..7a8aee2 100644 --- a/backend.c +++ b/backend.c @@ -14139,10 +14139,12 @@ ParseFEN(board, blackPlaysFirst, fen) } /* assume possible unless obviously impossible */ if(initialRights[0]!=NoRights && board[castlingRank[0]][initialRights[0]] != WhiteRook) board[CASTLING][0] = NoRights; if(initialRights[1]!=NoRights && board[castlingRank[1]][initialRights[1]] != WhiteRook) board[CASTLING][1] = NoRights; - if(initialRights[2]!=NoRights && board[castlingRank[2]][initialRights[2]] != WhiteKing) board[CASTLING][2] = NoRights; + if(initialRights[2]!=NoRights && board[castlingRank[2]][initialRights[2]] != WhiteUnicorn + && board[castlingRank[2]][initialRights[2]] != WhiteKing) board[CASTLING][2] = NoRights; if(initialRights[3]!=NoRights && board[castlingRank[3]][initialRights[3]] != BlackRook) board[CASTLING][3] = NoRights; if(initialRights[4]!=NoRights && board[castlingRank[4]][initialRights[4]] != BlackRook) board[CASTLING][4] = NoRights; - if(initialRights[5]!=NoRights && board[castlingRank[5]][initialRights[5]] != BlackKing) board[CASTLING][5] = NoRights; + if(initialRights[5]!=NoRights && board[castlingRank[5]][initialRights[5]] != BlackUnicorn + && board[castlingRank[5]][initialRights[5]] != BlackKing) board[CASTLING][5] = NoRights; FENrulePlies = 0; while(*p==' ') p++; @@ -14157,12 +14159,18 @@ ParseFEN(board, blackPlaysFirst, fen) (gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom) && ( *p >= 'a' && *p < 'a' + gameInfo.boardWidth) || ( *p >= 'A' && *p < 'A' + gameInfo.boardWidth) ) { - char c = *p++; int whiteKingFile=-1, blackKingFile=-1; + char c = *p++; int whiteKingFile=NoRights, blackKingFile=NoRights; for(i=BOARD_LEFT; i> 1; // for these variant scanning fails + if(whiteKingFile == NoRights || board[0][whiteKingFile] != WhiteUnicorn + && board[0][whiteKingFile] != WhiteKing) whiteKingFile = NoRights; + if(blackKingFile == NoRights || board[BOARD_HEIGHT-1][blackKingFile] != BlackUnicorn + && board[BOARD_HEIGHT-1][blackKingFile] != BlackKing) blackKingFile = NoRights; switch(c) { case'K': for(i=BOARD_RGHT-1; board[0][i]!=WhiteRook && i>whiteKingFile; i--); @@ -14170,7 +14178,7 @@ ParseFEN(board, blackPlaysFirst, fen) board[CASTLING][2] = whiteKingFile; break; case'Q': - for(i=BOARD_LEFT; board[0][i]!=WhiteRook && i