101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007-2009 Joshua Simmons <mud at majidejima dot com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef GOBAN_BOARD_H
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#define GOBAN_BOARD_H
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#include "types.h"
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#include "goban.h" /* for LCD_BOARD_SIZE */
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#define WHITE 1
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#define BLACK 2
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#define EMPTY 0
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#define NONE 0
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#define INVALID 4
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#define OTHER(color) (color == BLACK ? WHITE : BLACK)
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/* MAX_BOARD_SIZE no longer dependent on screen
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size since zooming was implemented */
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#define MAX_BOARD_SIZE 19
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#define MIN_BOARD_SIZE 1
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#define INVALID_POS ((unsigned short) -5003)
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#define PASS_POS ((unsigned short) -5002)
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#define POS(i, j) ((i + 1) + (j + 1) * (MAX_BOARD_SIZE + 2))
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#define WEST(i) (i - 1)
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#define EAST(i) (i + 1)
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#define NORTH(i) (i - (MAX_BOARD_SIZE + 2))
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#define SOUTH(i) (i + (MAX_BOARD_SIZE + 2))
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unsigned short WRAP (unsigned short pos);
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#define I(pos) (pos % (MAX_BOARD_SIZE + 2) - 1)
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#define J(pos) (pos / (MAX_BOARD_SIZE + 2) - 1)
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/* Clear the data from the board, including marks and such. Should be
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called after setting the board size */
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void clear_board (void);
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/* Set the size of the board. Follow with a call to clear_board() and a
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call to setup_display(). Returns false on failure (generally, invalid
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width or height) */
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bool set_size_board (int width, int height);
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/* Returns true if the given move is legal. allow_suicide should be true
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if suicide is a valid move with the current ruleset */
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bool legal_move_board (unsigned short pos, unsigned char color,
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bool allow_suicide);
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/* Returns true if the pos is on the board */
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bool on_board (unsigned short pos);
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/* Get the color on the board at the given pos. Should be
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BLACK/WHITE/EMPTY, and sometimes INVALID. */
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unsigned char get_point_board (unsigned short pos);
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/* Set the color of point at pos, which must be on the board */
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void set_point_board (unsigned short pos, unsigned char color);
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/* Get the number of liberties of the group of which pos is a stone.
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Returns less than zero if pos is empty. If the number of liberties of
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the group is greater than 2, 2 is returned. */
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int get_liberties_board (unsigned short pos);
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/* A simple flood fill algorithm for capturing or uncapturing stones.
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Returns the number of locations changed. */
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int flood_fill_board (unsigned short pos, unsigned char color);
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/* The size of the board */
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extern unsigned int board_width;
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extern unsigned int board_height;
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/* The number of captures for each player */
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extern int black_captures;
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extern int white_captures;
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/* If there is a ko which cannot be retaken, this is set to the point
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which may not be played at. Otherwise this is INVALID_POS. */
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extern unsigned short ko_pos;
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#endif
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