Wed, 29 Aug 2018 14:01:41 +0200
PGN output now correctly breaks after black has also moved
universe@10 | 1 | /* |
universe@10 | 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
universe@10 | 3 | * |
universe@55 | 4 | * Copyright 2016 Mike Becker. All rights reserved. |
universe@10 | 5 | * |
universe@10 | 6 | * Redistribution and use in source and binary forms, with or without |
universe@10 | 7 | * modification, are permitted provided that the following conditions are met: |
universe@10 | 8 | * |
universe@10 | 9 | * 1. Redistributions of source code must retain the above copyright |
universe@10 | 10 | * notice, this list of conditions and the following disclaimer. |
universe@10 | 11 | * |
universe@10 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
universe@10 | 13 | * notice, this list of conditions and the following disclaimer in the |
universe@10 | 14 | * documentation and/or other materials provided with the distribution. |
universe@10 | 15 | * |
universe@10 | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
universe@10 | 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
universe@10 | 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
universe@10 | 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
universe@10 | 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
universe@10 | 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
universe@10 | 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
universe@10 | 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
universe@10 | 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
universe@10 | 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
universe@10 | 26 | * POSSIBILITY OF SUCH DAMAGE. |
universe@10 | 27 | * |
universe@10 | 28 | */ |
universe@10 | 29 | |
universe@16 | 30 | #include "rules.h" |
universe@10 | 31 | #include "king.h" |
universe@25 | 32 | #include <stdlib.h> |
universe@10 | 33 | |
universe@25 | 34 | static _Bool king_castling_chkmoved(GameState *gamestate, |
universe@25 | 35 | uint8_t row, uint8_t file) { |
universe@25 | 36 | |
universe@25 | 37 | MoveList *ml = gamestate->movelist; |
universe@25 | 38 | while (ml) { |
universe@25 | 39 | if (ml->move.fromfile == file && ml->move.fromrow == row) { |
universe@25 | 40 | return 1; |
universe@25 | 41 | } |
universe@25 | 42 | ml = ml->next; |
universe@25 | 43 | } |
universe@25 | 44 | |
universe@19 | 45 | return 0; |
universe@10 | 46 | } |
universe@10 | 47 | |
universe@25 | 48 | _Bool king_chkrules(GameState *gamestate, Move* move) { |
universe@25 | 49 | if (abs(move->torow - move->fromrow) <= 1 && |
universe@25 | 50 | abs(move->tofile - move->fromfile) <= 1) { |
universe@25 | 51 | return 1; |
universe@25 | 52 | } else { |
universe@25 | 53 | /* castling */ |
universe@25 | 54 | if (move->fromrow == move->torow && |
universe@25 | 55 | move->fromrow == ((move->piece&COLOR_MASK) == WHITE ? 0 : 7) && |
universe@25 | 56 | move->fromfile == fileidx('e') && |
universe@25 | 57 | (move->tofile == fileidx('c') || move->tofile == fileidx('g'))) { |
universe@25 | 58 | |
universe@25 | 59 | return !king_castling_chkmoved(gamestate, |
universe@25 | 60 | move->fromrow, move->fromfile) && |
universe@25 | 61 | !king_castling_chkmoved(gamestate, move->fromrow, |
universe@25 | 62 | move->tofile == fileidx('c') ? 0 : 7); |
universe@25 | 63 | } else { |
universe@25 | 64 | return 0; |
universe@25 | 65 | } |
universe@25 | 66 | } |
universe@25 | 67 | } |
universe@25 | 68 | |
universe@23 | 69 | _Bool king_isblocked(GameState *gamestate, Move *move) { |
universe@25 | 70 | |
universe@25 | 71 | uint8_t opponent_color = opponent_color(move->piece&COLOR_MASK); |
universe@25 | 72 | |
universe@64 | 73 | /* being in check does not "block" the king, so don't test it here */ |
universe@47 | 74 | _Bool blocked = 0; |
universe@47 | 75 | |
universe@64 | 76 | /* just test, if castling move is blocked */ |
universe@25 | 77 | if (abs(move->tofile - move->fromfile) == 2) { |
universe@25 | 78 | if (move->tofile == fileidx('c')) { |
universe@25 | 79 | blocked |= gamestate->board[move->torow][fileidx('b')]; |
universe@25 | 80 | } |
universe@25 | 81 | uint8_t midfile = (move->tofile+move->fromfile)/2; |
universe@25 | 82 | blocked |= gamestate->lastmove->move.check || |
universe@25 | 83 | gamestate->board[move->torow][midfile] || |
universe@25 | 84 | is_covered(gamestate, move->torow, midfile, opponent_color); |
universe@25 | 85 | } |
universe@25 | 86 | |
universe@25 | 87 | return blocked; |
universe@10 | 88 | } |