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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 <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <assert.h> | |
27 | #include <string.h> | |
28 | ||
29 | #include "liberty.h" | |
30 | #include "winsocket.h" | |
31 | ||
32 | ||
33 | /* The cosmic style uses more influence than the defaults attenuation | |
34 | * coefficients ! | |
35 | * The "TERR_.."-values are used in the influence computations used | |
36 | * for territory evaluation. (initial_influence with dragons_known, | |
37 | * move_influence) | |
38 | */ | |
39 | #define DEFAULT_ATTENUATION \ | |
40 | (cosmic_importance * 2.7 + (1.0 - cosmic_importance) * 3.0) | |
41 | #define TERR_DEFAULT_ATTENUATION \ | |
42 | (cosmic_importance * 2.15 + (1.0 - cosmic_importance) * 2.4) | |
43 | ||
44 | /* Extra damping coefficient for spreading influence diagonally. */ | |
45 | #define DIAGONAL_DAMPING \ | |
46 | (cosmic_importance * 2.5 + (1.0 - cosmic_importance) * 2.0) | |
47 | #define TERR_DIAGONAL_DAMPING \ | |
48 | (cosmic_importance * 2.5 + (1.0 - cosmic_importance) * 1.7) | |
49 | ||
50 | ||
51 | ||
52 | ||
53 | ||
54 | ||
55 | /* Smallest amount of influence that we care about distributing. */ | |
56 | #define INFLUENCE_CUTOFF 0.02 | |
57 | ||
58 | /* Value in delta_territory_cache indicating that the value has not | |
59 | * been computed. Arbitrary but unattainable. | |
60 | */ | |
61 | #define NOT_COMPUTED (-2.0 * MAX_BOARD * MAX_BOARD) | |
62 | ||
63 | /* Maximum number of regions allowed between territory, moyo, and area. | |
64 | * FIXME: This number is vastly exaggerated. Should be possible to | |
65 | * come up with a much better upper bound. | |
66 | */ | |
67 | #define MAX_REGIONS (3*MAX_BOARD*MAX_BOARD + 1) | |
68 | ||
69 | #define MAX_INTRUSIONS (2 * MAX_BOARD * MAX_BOARD) | |
70 | ||
71 | struct intrusion_data | |
72 | { | |
73 | int source_pos; /* Stone from which intrusion originates.*/ | |
74 | int strength_pos; /* Position of the intrusion influence soure. */ | |
75 | float strength; | |
76 | float attenuation; | |
77 | }; | |
78 | ||
79 | struct influence_data | |
80 | { | |
81 | signed char safe[BOARDMAX]; | |
82 | ||
83 | float white_influence[BOARDMAX]; /* Accumulated influence. */ | |
84 | float black_influence[BOARDMAX]; /* Accumulated influence. */ | |
85 | float white_strength[BOARDMAX]; /* Strength of influence source. */ | |
86 | float black_strength[BOARDMAX]; /* Strength of influence source. */ | |
87 | float white_attenuation[BOARDMAX]; | |
88 | float black_attenuation[BOARDMAX]; | |
89 | float white_permeability[BOARDMAX]; | |
90 | float black_permeability[BOARDMAX]; | |
91 | ||
92 | int is_territorial_influence; /* 0 only if computing escape_influence.*/ | |
93 | ||
94 | float territory_value[BOARDMAX]; | |
95 | int non_territory[BOARDMAX]; | |
96 | int captured; | |
97 | ||
98 | int color_to_move; /* Which color is in turn to move. */ | |
99 | ||
100 | int queue[MAX_BOARD * MAX_BOARD]; /* Points receiving influence. */ | |
101 | ||
102 | int intrusion_counter; | |
103 | struct intrusion_data intrusions[MAX_INTRUSIONS]; | |
104 | ||
105 | int id; | |
106 | }; | |
107 | ||
108 | /* Typedef for pointer to either of the functions whose_territory(), | |
109 | * whose_loose_territory(), whose_moyo(), and whose_area(). | |
110 | */ | |
111 | typedef int (*owner_function_ptr)(const struct influence_data *q, int pos); | |
112 | ||
113 | /* Used for tuning game advancement algorythm */ | |
114 | #define WEIGHT_TERRITORY 10 | |
115 | #define WEIGHT_MOYO 3 | |
116 | #define WEIGHT_AREA 1 | |
117 | ||
118 | ||
119 | ||
120 | /* cosmic_importance is a number between 0.0 and 1.0 ; | |
121 | * when cosmic_importance is 0.0, the default influence | |
122 | * values are used; when cosmic_importance is 1.0, GNU Go | |
123 | * will try to play an influence-oriented fuseki by | |
124 | * over-estimatingthe potential territory values of moyos. | |
125 | * In the current implementation, cosmic_importance decreases | |
126 | * slowly for 19*19 games from 1.0 at move 4 to 0.0 at move 120. | |
127 | */ | |
128 | float cosmic_importance; | |
129 | ||
130 | ||
131 | /* Used in the whose_moyo() function */ | |
132 | struct moyo_determination_data | |
133 | { | |
134 | float influence_balance; | |
135 | float my_influence_minimum; | |
136 | float opp_influence_maximum; | |
137 | }; | |
138 | ||
139 | ||
140 | ||
141 | ||
142 | /* | |
143 | * Local Variables: | |
144 | * tab-width: 8 | |
145 | * c-basic-offset: 2 | |
146 | * End: | |
147 | */ | |
148 |