1.1 --- a/src/rules/pawn.c Sat Mar 29 16:53:58 2014 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,97 +0,0 @@
1.4 -/*
1.5 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 - *
1.7 - * Copyright 2014 Mike Becker. All rights reserved.
1.8 - *
1.9 - * Redistribution and use in source and binary forms, with or without
1.10 - * modification, are permitted provided that the following conditions are met:
1.11 - *
1.12 - * 1. Redistributions of source code must retain the above copyright
1.13 - * notice, this list of conditions and the following disclaimer.
1.14 - *
1.15 - * 2. Redistributions in binary form must reproduce the above copyright
1.16 - * notice, this list of conditions and the following disclaimer in the
1.17 - * documentation and/or other materials provided with the distribution.
1.18 - *
1.19 - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
1.20 - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.21 - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.22 - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
1.23 - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.24 - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.25 - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.26 - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.27 - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.28 - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.29 - * POSSIBILITY OF SUCH DAMAGE.
1.30 - *
1.31 - */
1.32 -
1.33 -#include "pawn.h"
1.34 -#include "rules.h"
1.35 -
1.36 -_Bool pawn_chkrules(Board board, Move *move) {
1.37 - int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);
1.38 -
1.39 - if (move->torow == (d < 0 ? 7 : 0)) {
1.40 - if (move->promotion) {
1.41 - uint8_t promopiece = move->promotion & PIECE_MASK;
1.42 - if (!promopiece || promopiece == PAWN || promopiece == KING) {
1.43 - return FALSE;
1.44 - }
1.45 - } else {
1.46 - return FALSE;
1.47 - }
1.48 - } else {
1.49 - if (move->promotion) {
1.50 - return FALSE;
1.51 - }
1.52 - }
1.53 -
1.54 - if (move->capture) {
1.55 - if (move->fromrow == move->torow + d && (
1.56 - move->fromfile == move->tofile + 1 ||
1.57 - move->fromfile == move->tofile - 1)) {
1.58 -
1.59 - return mdst(board,move)
1.60 - || (board[move->fromrow][move->tofile] & ENPASSANT_THREAT);
1.61 - } else {
1.62 - return FALSE;
1.63 - }
1.64 - } else {
1.65 - if (move->fromfile == move->tofile) {
1.66 - return (move->fromrow == move->torow + d) ||
1.67 - (move->fromrow == (d < 0 ? 1 : 6) && /* advanced first move */
1.68 - move->fromrow == move->torow + d*2);
1.69 - } else {
1.70 - return FALSE;
1.71 - }
1.72 - }
1.73 -}
1.74 -
1.75 -_Bool pawn_isblocked(Board board, Move *move) {
1.76 - return mdst(board,move) && !move->capture;
1.77 -}
1.78 -
1.79 -int pawn_getlocation(Board board, Move *move) {
1.80 - int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);
1.81 -
1.82 - if (move->fromfile == POS_UNSPECIFIED) {
1.83 - move->fromfile = move->tofile;
1.84 - }
1.85 - move->fromrow = move->torow + d;
1.86 - if (move->fromrow > 6) {
1.87 - return INVALID_POSITION;
1.88 - } else {
1.89 - /* advanced first move */
1.90 - if (move->fromrow == (d < 0 ? 2 : 5) &&
1.91 - msrc(board,move) != move->piece) {
1.92 -
1.93 - move->fromrow += d;
1.94 - if (move->fromrow > 6) {
1.95 - return INVALID_POSITION;
1.96 - }
1.97 - }
1.98 - }
1.99 - return VALID_MOVE_SYNTAX;
1.100 -}
