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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>
-
- extern int rd;
-
- opening(i, j, cnd, type)
- /* get move for opening from game tree */
- int *i, *j, *cnd, type;
- {
- struct tnode {
- int i, j, ndct, next[8];
- };
-
- static struct tnode tree[] = {
- {-1, -1, 8, { 1, 2, 3, 4, 5, 6, 7, 20}}, /* 0 */
- {2, 3, 2, { 8, 9}},
- {2, 4, 1, {10}},
- {3, 2, 2, {11, 12}},
- {3, 3, 6, {14, 15, 16, 17, 18, 19}},
- {3, 4, 1, {10}}, /* 5 */
- {4, 2, 1, {13}},
- {4, 3, 1, {13}},
- {4, 2, 0},
- {4, 3, 0},
- {3, 2, 0}, /* 10 */
- {2, 4, 0},
- {3, 4, 0},
- {2, 3, 0},
- {2, 5, 1, {10}},
- {2, 6, 1, {10}}, /* 15 */
- {3, 5, 1, {10}},
- {5, 2, 1, {13}},
- {5, 3, 1, {13}},
- {6, 2, 1, {13}},
- {2, 2, 0} /* 20 */
- };
- int m;
-
- /* get i, j */
- if ((type == 1) || (type == 3))
- *i = 18 - tree[*cnd].i; /* inverted */
- else
- *i = tree[*cnd].i;
- if ((type == 2) || (type == 3))
- *j = 18 - tree[*cnd].j; /* reflected */
- else
- *j = tree[*cnd].j;
- if (tree[*cnd].ndct) /* more move */
- {
- random(&rd);
- m = rd % tree[*cnd].ndct; /* select move */
- *cnd = tree[*cnd].next[m]; /* new current node */
- return 1;
- }
- else
- return 0;
- } /* end opening */
-
-