74 lines
3.0 KiB
C
74 lines
3.0 KiB
C
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
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* This is GNU Go, a Go program. Contact gnugo@gnu.org, or see *
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* http://www.gnu.org/software/gnugo/ for more information. *
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* *
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* Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, *
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* 2008 and 2009 by the Free Software Foundation. *
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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 as *
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* published by the Free Software Foundation - version 3 or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License in file COPYING for more details. *
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* *
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* You should have received a copy of the GNU General Public *
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* License along with this program; if not, write to the Free *
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
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* Boston, MA 02111, USA. *
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\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "liberty.h"
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#define CAN_BE_EMPTY 1
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#define CAN_CONTAIN_STONE 2
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#define EYE_DEFENSE_POINT 4
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#define EYE_ATTACK_POINT 8
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/*
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* The vertices of each eye are defined by an array of struct eye_vertex.
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*/
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struct eye_vertex {
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signed char marginal; /* 1 if marginal vertex, 0 otherwise */
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signed char edge; /* 0 = center, 1 = edge, 2 = corner */
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/* A corner vertex may only be matched at the corner.
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* An edge vertex may be matched at the corner or on the edge.
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* A center vertex may be matched anywhere.
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*/
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signed char flags; /* see the #defines above */
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signed char neighbors; /* number of neighbors */
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signed char n[4]; /* position in array of vertex neighbors */
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};
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/*
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* Each eye is described by one struct eye_graph and the vertices
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* in the struct eye_vertex array.
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*/
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struct eye_graph {
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struct eye_vertex *vertex;
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int patnum; /* number of pattern */
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int esize; /* number of vertices */
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int msize; /* number of marginal vertices */
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int ends; /* number of vertices with one neighbor */
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int two_neighbors; /* number of vertices with 2 neighbors */
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int three_neighbors; /* number of vertices with 3 neighbors */
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struct eyevalue value; /* eye value */
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};
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extern struct eye_graph graphs[];
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/*
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* Local Variables:
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* tab-width: 8
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* c-basic-offset: 2
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* End:
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*/
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