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1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\ |
2 | * This is GNU Go, a Go program. Contact gnugo@gnu.org, or see * | |
3 | * http://www.gnu.org/software/gnugo/ for more information. * | |
4 | * * | |
5 | * Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, * | |
6 | * 2008 and 2009 by the Free Software Foundation. * | |
7 | * * | |
8 | * This program is free software; you can redistribute it and/or * | |
9 | * modify it under the terms of the GNU General Public License as * | |
10 | * published by the Free Software Foundation - version 3 or * | |
11 | * (at your option) any later version. * | |
12 | * * | |
13 | * This program is distributed in the hope that it will be useful, * | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
16 | * GNU General Public License in file COPYING for more details. * | |
17 | * * | |
18 | * You should have received a copy of the GNU General Public * | |
19 | * License along with this program; if not, write to the Free * | |
20 | * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * | |
21 | * Boston, MA 02111, USA. * | |
22 | \* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
23 | ||
24 | #include "liberty.h" | |
25 | ||
26 | ||
27 | #define CAN_BE_EMPTY 1 | |
28 | #define CAN_CONTAIN_STONE 2 | |
29 | #define EYE_DEFENSE_POINT 4 | |
30 | #define EYE_ATTACK_POINT 8 | |
31 | ||
32 | /* | |
33 | * The vertices of each eye are defined by an array of struct eye_vertex. | |
34 | */ | |
35 | ||
36 | struct eye_vertex { | |
37 | signed char marginal; /* 1 if marginal vertex, 0 otherwise */ | |
38 | signed char edge; /* 0 = center, 1 = edge, 2 = corner */ | |
39 | /* A corner vertex may only be matched at the corner. | |
40 | * An edge vertex may be matched at the corner or on the edge. | |
41 | * A center vertex may be matched anywhere. | |
42 | */ | |
43 | signed char flags; /* see the #defines above */ | |
44 | ||
45 | signed char neighbors; /* number of neighbors */ | |
46 | signed char n[4]; /* position in array of vertex neighbors */ | |
47 | }; | |
48 | ||
49 | ||
50 | /* | |
51 | * Each eye is described by one struct eye_graph and the vertices | |
52 | * in the struct eye_vertex array. | |
53 | */ | |
54 | ||
55 | struct eye_graph { | |
56 | struct eye_vertex *vertex; | |
57 | int patnum; /* number of pattern */ | |
58 | int esize; /* number of vertices */ | |
59 | int msize; /* number of marginal vertices */ | |
60 | int ends; /* number of vertices with one neighbor */ | |
61 | int two_neighbors; /* number of vertices with 2 neighbors */ | |
62 | int three_neighbors; /* number of vertices with 3 neighbors */ | |
63 | struct eyevalue value; /* eye value */ | |
64 | }; | |
65 | ||
66 | extern struct eye_graph graphs[]; | |
67 | ||
68 | /* | |
69 | * Local Variables: | |
70 | * tab-width: 8 | |
71 | * c-basic-offset: 2 | |
72 | * End: | |
73 | */ |