src/chess/queen.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2014 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
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 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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#include "rules.h"
#include "rook.h"
#include "bishop.h"
#include "queen.h"

_Bool queen_chkrules(Move* move) {
    return bishop_chkrules(move) || rook_chkrules(move);
}

_Bool queen_isblocked(GameState *gamestate, Move *move) {
    if (rook_chkrules(move)) {
        return rook_isblocked(gamestate, move);
    } else {
        return bishop_isblocked(gamestate, move);
    }
}

int queen_getlocation(GameState *gamestate, Move *move) {
    
    Move moveasrook = *move;
    int rookaspect = rook_getlocation(gamestate, &moveasrook);
    
    Move moveasbishop = *move;
    int bishopaspect = bishop_getlocation(gamestate, &moveasbishop);
    
    if (rookaspect == VALID_MOVE_SYNTAX && bishopaspect == VALID_MOVE_SYNTAX) {
        return AMBIGUOUS_MOVE;
    }
    
    if (rookaspect == VALID_MOVE_SYNTAX) {
        *move = moveasrook;
        return VALID_MOVE_SYNTAX;
    }
    
    if (bishopaspect == VALID_MOVE_SYNTAX) {
        *move = moveasbishop;
        return VALID_MOVE_SYNTAX;
    }
    
    return INVALID_POSITION;
}