terminal-chess: src/rules/pawn.c@84880c7e1ea6

interface for retrieving locations when using short algebraic notation
inverted return values of not yet implemented functions to prevent bugs

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2014 Mike Becker. All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  *

    28  */

    30 #include "pawn.h"

    32 _Bool pawn_chkrules(Board board, Move *move) {

    33     // TODO: implement

    34     return TRUE;

    35 }

    37 _Bool pawn_isblocked(Board board, Move *move) {

    38     // TODO: implement

    39     return FALSE;

    40 }

    42 _Bool pawn_getlocation(Board board, Move *move) {

    43     int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1);

    45     // TODO: battle moves

    47     move->fromfile = move->tofile;

    48     move->fromrow = move->torow + d;

    49     if (move->fromrow > 6) {

    50         return FALSE;

    51     } else {

    52         /* advanced first move */

    53         if (move->fromrow == (d < 0 ? 2 : 5) &&

    54             board[move->fromrow][move->fromfile] != move->piece) {

    56             move->fromrow += d;

    57             if (move->fromrow > 6) {

    58                 return FALSE;

    59             }

    60         }

    61     }

    62     return TRUE;

    63 }

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