rockbox/apps/plugins/reversi/reversi-strategy-naive.c
Antoine Cellerier cd82964e5d Make sure that reversi doesn't enter an infinite loop when using 1 or 2 AIs.
+ some changes that will be needed for more advanced AIs (which aren't ready to commit yet)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13758 a1c6a512-1295-4272-9138-f99709370657
2007-07-01 20:48:51 +00:00

56 lines
1.6 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2007 Antoine Cellerier
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "reversi-strategy.h"
/**
* Naive/Stupid strategy:
* Random moves
*/
static move_t naive_move_func(const reversi_board_t *game, int player) {
int num_moves = reversi_count_player_available_moves(game, player);
int r;
int row = 0;
int col = 0;
if(!num_moves) return MOVE_INVALID;
r = game->rb->rand()%num_moves;
while(true) {
if(reversi_is_valid_move(game, row, col, player)) {
r--;
if(r<0) {
return MAKE_MOVE(row,col,player);
}
}
col ++;
if(col==BOARD_SIZE) {
col = 0;
row ++;
if(row==BOARD_SIZE) {
row = 0;
}
}
}
}
const game_strategy_t strategy_naive = {
true,
NULL,
naive_move_func
};