Wed, 29 Aug 2018 17:05:40 +0200
verified that checkmate notation does work correctly
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2016 Mike Becker. All rights reserved.
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9 * 1. Redistributions of source code must retain the above copyright
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30 #include "bishop.h"
31 #include "rules.h"
32 #include <stdlib.h>
34 _Bool bishop_chkrules(Move* move) {
35 return abs(move->torow-move->fromrow) == abs(move->tofile-move->fromfile);
36 }
38 _Bool bishop_isblocked(GameState *gamestate, Move *move) {
39 int dy = move->torow > move->fromrow ? 1 : -1;
40 int dx = move->tofile > move->fromfile ? 1 : -1;
42 uint8_t y = move->fromrow;
43 uint8_t x = move->fromfile;
45 while (x != move->tofile-dx && y != move->torow-dy) {
46 x += dx;
47 y += dy;
48 if (gamestate->board[y][x]) {
49 return 1;
50 }
51 }
53 return 0;
54 }