Tue, 13 Aug 2019 00:33:59 +0200
pgn parser can now handle comments (although it ignores them for now)
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2016 Mike Becker. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include "rules.h" #include "king.h" #include <stdlib.h> static _Bool king_castling_chkmoved(GameState *gamestate, uint8_t row, uint8_t file) { MoveList *ml = gamestate->movelist; while (ml) { if (ml->move.fromfile == file && ml->move.fromrow == row) { return 1; } ml = ml->next; } return 0; } _Bool king_chkrules(GameState *gamestate, Move* move) { if (abs(move->torow - move->fromrow) <= 1 && abs(move->tofile - move->fromfile) <= 1) { return 1; } else { /* castling */ if (move->fromrow == move->torow && move->fromrow == ((move->piece&COLOR_MASK) == WHITE ? 0 : 7) && move->fromfile == fileidx('e') && (move->tofile == fileidx('c') || move->tofile == fileidx('g'))) { return !king_castling_chkmoved(gamestate, move->fromrow, move->fromfile) && !king_castling_chkmoved(gamestate, move->fromrow, move->tofile == fileidx('c') ? 0 : 7); } else { return 0; } } } _Bool king_isblocked(GameState *gamestate, Move *move) { uint8_t opponent_color = opponent_color(move->piece&COLOR_MASK); /* being in check does not "block" the king, so don't test it here */ _Bool blocked = 0; /* just test, if castling move is blocked */ if (abs(move->tofile - move->fromfile) == 2) { if (move->tofile == fileidx('c')) { blocked |= gamestate->board[move->torow][fileidx('b')]; } uint8_t midfile = (move->tofile+move->fromfile)/2; blocked |= gamestate->lastmove->move.check || gamestate->board[move->torow][midfile] || is_covered(gamestate, move->torow, midfile, opponent_color); } return blocked; }