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- /*
- GNU GO - the game of Go (Wei-Chi)
- Version 1.1 last revised 3-1-89
- Copyright (C) Free Software Foundation, Inc.
- written by Man L. Li
- modified by Wayne Iba
- documented by Bob Webber
- */
- /*
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation - version 1.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License in file COPYING for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- Please report any bug/fix, modification, suggestion to
-
- mail address: Man L. Li
- Dept. of Computer Science
- University of Houston
- 4800 Calhoun Road
- Houston, TX 77004
-
- e-mail address: manli@cs.uh.edu (Internet)
- coscgbn@uhvax1.bitnet (BITNET)
- 70070,404 (CompuServe)
- */
-
- #include <stdio.h>
-
- #define EMPTY 0
-
- extern unsigned char p[19][19], l[19][19];
- extern int mymove;
- extern int mik, mjk, uik, ujk, mk, uk; /* piece captured */
-
- examboard(color)
- /* examine pieces */
- int color;
- {
- int i, j, n;
-
-
- /* find liberty of each piece */
- eval(color);
-
- /* initialize piece captured */
- if (color == mymove)
- {
- mik = -1;
- mjk = -1;
- }
- else
- {
- uik = -1;
- ujk = -1;
- }
- n = 0; /* The number of captures this move for Ko purposes */
-
- /* remove all piece of zero liberty */
- for (i = 0; i < 19; i++)
- for (j = 0; j < 19; j++)
- if ((p[i][j] == color) && (l[i][j] == 0))
- {
- p[i][j] = EMPTY;
- /* record piece captured */
- if (color == mymove)
- {
- mik = i;
- mjk = j;
- ++mk;
- }
- else
- {
- uik = i;
- ujk = j;
- ++uk;
- }
- ++n; /* increment number of captures on this move */
- }
- /* reset to -1 if more than one stone captured since no Ko possible */
- if (color == mymove && n > 1)
- {
- mik = -1;
- mjk = -1;
- }
- else if ( n > 1 )
- {
- uik = -1;
- ujk = -1;
- }
- } /* end examboard */
-
-