| 1 | /* |
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| 2 | * static char *rcsid_style_c = |
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| 3 | * "$Id: style.C,v 1.1 2006/08/13 17:16:03 elmex Exp $"; |
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| 4 | */ |
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| 5 | |
1 | |
| 6 | /* |
2 | /* |
| 7 | CrossFire, A Multiplayer game for X-windows |
3 | CrossFire, A Multiplayer game for X-windows |
| 8 | |
4 | |
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5 | Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
| 9 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
6 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
| 10 | Copyright (C) 1992 Frank Tore Johansen |
7 | Copyright (C) 1992 Frank Tore Johansen |
| 11 | |
8 | |
| 12 | This program is free software; you can redistribute it and/or modify |
9 | This program is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
10 | it under the terms of the GNU General Public License as published by |
| … | |
… | |
| 21 | |
18 | |
| 22 | You should have received a copy of the GNU General Public License |
19 | You should have received a copy of the GNU General Public License |
| 23 | along with this program; if not, write to the Free Software |
20 | along with this program; if not, write to the Free Software |
| 24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | |
22 | |
| 26 | The authors can be reached via e-mail at crossfire-devel@real-time.com |
23 | The authors can be reached via e-mail at <crossfire@schmorp.de> |
| 27 | */ |
24 | */ |
| 28 | |
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| 29 | |
25 | |
| 30 | #include <global.h> |
26 | #include <global.h> |
| 31 | #include <random_map.h> |
27 | #include <random_map.h> |
| 32 | #ifndef WIN32 /* ---win32 exclude headers */ |
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| 33 | #include <dirent.h> |
28 | #include <dirent.h> |
| 34 | #include <sys/stat.h> |
29 | #include <sys/stat.h> |
| 35 | #include <unistd.h> |
30 | #include <unistd.h> |
| 36 | #include "../include/autoconf.h" |
31 | #include "../include/autoconf.h" |
| 37 | #endif /* win32 */ |
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| 38 | |
32 | |
| 39 | |
33 | static int |
| 40 | static int pointer_strcmp(const void *p1, const void *p2) |
34 | pointer_strcmp (const void *p1, const void *p2) |
| 41 | { |
35 | { |
| 42 | const char *s1 = *(const char **)p1; |
36 | const char *s1 = *(const char **) p1; |
| 43 | const char *s2 = *(const char **)p2; |
37 | const char *s2 = *(const char **) p2; |
| 44 | |
38 | |
| 45 | return(strcmp(s1, s2)); |
39 | return (strcmp (s1, s2)); |
| 46 | } |
40 | } |
| 47 | |
41 | |
| 48 | /* This is our own version of scandir/select_regular_files/sort. |
42 | /* This is our own version of scandir/select_regular_files/sort. |
| 49 | * To support having subdirectories in styles, we need to know |
43 | * To support having subdirectories in styles, we need to know |
| 50 | * if in fact the directory we read is a subdirectory. However, |
44 | * if in fact the directory we read is a subdirectory. However, |
| … | |
… | |
| 57 | * skip_dirs controls our behavioru - if nonzero, we don't |
51 | * skip_dirs controls our behavioru - if nonzero, we don't |
| 58 | * skip any subdirectories - if zero, we store those away, |
52 | * skip any subdirectories - if zero, we store those away, |
| 59 | * since there are cases where we want to choose a random |
53 | * since there are cases where we want to choose a random |
| 60 | * directory. |
54 | * directory. |
| 61 | */ |
55 | */ |
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56 | int |
| 62 | int load_dir (const char *dir, char ***namelist, int skip_dirs) |
57 | load_dir (const char *dir, char ***namelist, int skip_dirs) |
| 63 | { |
58 | { |
| 64 | DIR *dp; |
59 | DIR *dp; |
| 65 | struct dirent *d; |
60 | struct dirent *d; |
| 66 | int entries=0, entry_size=0; |
61 | int entries = 0, entry_size = 0; |
| 67 | char name[NAME_MAX+1], **rn=NULL; |
62 | char name[NAME_MAX + 1], **rn = NULL; |
| 68 | struct stat sb; |
63 | struct stat sb; |
| 69 | |
64 | |
| 70 | dp = opendir (dir); |
65 | dp = opendir (dir); |
| 71 | if (dp == NULL) |
66 | if (dp == NULL) |
| 72 | return -1; |
67 | return -1; |
| 73 | |
68 | |
| 74 | while ((d = readdir (dp)) != NULL) { |
69 | while ((d = readdir (dp)) != NULL) |
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70 | { |
| 75 | sprintf(name, "%s/%s", dir, d->d_name); |
71 | sprintf (name, "%s/%s", dir, d->d_name); |
| 76 | if (skip_dirs) { |
72 | if (skip_dirs) |
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73 | { |
| 77 | stat(name, &sb); |
74 | stat (name, &sb); |
| 78 | if (S_ISDIR(sb.st_mode)) { |
75 | if (S_ISDIR (sb.st_mode)) |
| 79 | continue; |
76 | { |
| 80 | } |
77 | continue; |
| 81 | } |
78 | } |
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79 | } |
| 82 | |
80 | |
| 83 | if (entries == entry_size) { |
81 | if (entries == entry_size) |
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82 | { |
| 84 | entry_size+=10; |
83 | entry_size += 10; |
| 85 | rn = (char **) realloc(rn, sizeof(char*) * entry_size); |
84 | rn = (char **) realloc (rn, sizeof (char *) * entry_size); |
| 86 | } |
85 | } |
| 87 | rn[entries] = strdup_local(d->d_name); |
86 | rn[entries] = strdup (d->d_name); |
| 88 | entries++; |
87 | entries++; |
| 89 | |
88 | |
| 90 | } |
89 | } |
| 91 | (void) closedir (dp); |
90 | (void) closedir (dp); |
| 92 | |
91 | |
| 93 | qsort(rn, entries, sizeof(char*), pointer_strcmp); |
92 | qsort (rn, entries, sizeof (char *), pointer_strcmp); |
| 94 | |
93 | |
| 95 | *namelist = rn; |
94 | *namelist = rn; |
| 96 | return entries; |
95 | return entries; |
| 97 | } |
96 | } |
| 98 | |
97 | |
| 99 | |
98 | maptile * |
| 100 | |
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| 101 | |
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| 102 | |
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| 103 | /* this function loads and returns the map requested. |
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| 104 | * dirname, for example, is "/styles/wallstyles", stylename, is, |
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| 105 | * for example, "castle", difficulty is -1 when difficulty is |
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| 106 | * irrelevant to the style. If dirname is given, but stylename |
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| 107 | * isn't, and difficult is -1, it returns a random style map. |
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| 108 | * Otherwise, it tries to match the difficulty given with a style |
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| 109 | * file, named style_name_# where # is an integer |
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| 110 | */ |
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| 111 | |
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| 112 | /* remove extern, so visible to command_style_map_info function */ |
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| 113 | mapstruct *styles=NULL; |
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| 114 | |
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| 115 | |
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| 116 | mapstruct *load_style_map(char *style_name) |
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| 117 | { |
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| 118 | mapstruct *style_map; |
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| 119 | |
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| 120 | /* Given a file. See if its in memory */ |
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| 121 | for (style_map = styles; style_map!=NULL; style_map=style_map->next) { |
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| 122 | if (!strcmp(style_name, style_map->path)) return style_map; |
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| 123 | } |
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| 124 | style_map = load_original_map(style_name,MAP_STYLE); |
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| 125 | /* Remove it from global list, put it on our local list */ |
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| 126 | if (style_map) { |
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| 127 | mapstruct *tmp; |
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| 128 | |
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| 129 | if (style_map == first_map) |
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| 130 | first_map = style_map->next; |
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| 131 | else { |
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| 132 | for (tmp = first_map; tmp && tmp->next != style_map; tmp = tmp->next); |
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| 133 | if(tmp) |
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| 134 | tmp->next = style_map->next; |
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| 135 | } |
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| 136 | style_map->next = styles; |
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| 137 | styles = style_map; |
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| 138 | } |
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| 139 | return style_map; |
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| 140 | } |
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| 141 | |
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| 142 | mapstruct *find_style(const char *dirname,const char *stylename,int difficulty) { |
99 | find_style (const char *dirname, const char *stylename, int difficulty) |
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100 | { |
| 143 | char style_file_path[256]; |
101 | char style_file_path[1024]; |
| 144 | char style_file_full_path[256]; |
102 | char style_file_full_path[1024]; |
| 145 | mapstruct *style_map = NULL; |
103 | maptile *style_map = NULL; |
| 146 | struct stat file_stat; |
104 | struct stat file_stat; |
| 147 | int i, only_subdirs=0; |
105 | int i, only_subdirs = 0; |
| 148 | |
106 | |
| 149 | /* if stylename exists, set style_file_path to that file.*/ |
107 | /* if stylename exists, set style_file_path to that file. */ |
| 150 | if(stylename && strlen(stylename)>0) |
108 | if (stylename && strlen (stylename) > 0) |
| 151 | sprintf(style_file_path,"%s/%s",dirname,stylename); |
109 | sprintf (style_file_path, "%s/%s", dirname, stylename); |
| 152 | else /* otherwise, just use the dirname. We'll pick a random stylefile.*/ |
110 | else /* otherwise, just use the dirname. We'll pick a random stylefile. */ |
| 153 | sprintf(style_file_path,"%s",dirname); |
111 | sprintf (style_file_path, "%s", dirname); |
| 154 | |
112 | |
| 155 | /* is what we were given a directory, or a file? */ |
113 | /* is what we were given a directory, or a file? */ |
| 156 | sprintf(style_file_full_path,"%s/maps%s",settings.datadir,style_file_path); |
114 | sprintf (style_file_full_path, "%s/maps%s", settings.datadir, style_file_path); |
| 157 | if (stat(style_file_full_path, &file_stat) == 0 |
115 | |
| 158 | && !S_ISDIR(file_stat.st_mode)) { |
116 | if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode)) |
| 159 | style_map=load_style_map(style_file_path); |
117 | style_map = maptile::find_sync (style_file_path); |
| 160 | } |
118 | |
| 161 | if(style_map == NULL) /* maybe we were given a directory! */ |
119 | if (!style_map) /* maybe we were given a directory! */ |
| 162 | { |
120 | { |
| 163 | char **namelist; |
121 | char **namelist; |
| 164 | int n; |
122 | int n; |
| 165 | char style_dir_full_path[256]; |
123 | char style_dir_full_path[256]; |
| 166 | |
124 | |
| 167 | /* get the names of all the files in that directory */ |
125 | /* get the names of all the files in that directory */ |
| 168 | sprintf(style_dir_full_path,"%s/maps%s",settings.datadir,style_file_path); |
126 | sprintf (style_dir_full_path, "%s/maps%s", settings.datadir, style_file_path); |
| 169 | |
127 | |
| 170 | /* First, skip subdirectories. If we don't find anything, then try again |
128 | /* First, skip subdirectories. If we don't find anything, then try again |
| 171 | * without skipping subdirs. |
129 | * without skipping subdirs. |
| 172 | */ |
130 | */ |
| 173 | n = load_dir(style_dir_full_path, &namelist, 1); |
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| 174 | |
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| 175 | if (n<=0) { |
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| 176 | n = load_dir(style_dir_full_path, &namelist, 0); |
131 | n = load_dir (style_dir_full_path, &namelist, 1); |
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132 | |
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133 | if (n <= 0) |
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134 | { |
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135 | n = load_dir (style_dir_full_path, &namelist, 0); |
| 177 | only_subdirs=1; |
136 | only_subdirs = 1; |
| 178 | } |
137 | } |
| 179 | |
138 | |
| 180 | if (n<=0) return 0; /* nothing to load. Bye. */ |
139 | if (n <= 0) |
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140 | return 0; /* nothing to load. Bye. */ |
| 181 | |
141 | |
| 182 | /* Picks a random map. Note that if this is all directories, |
142 | /* Picks a random map. Note that if this is all directories, |
| 183 | * we know it won't be able to load, so save a few ticks. |
143 | * we know it won't be able to load, so save a few ticks. |
| 184 | * the door handling checks for this failure and handles |
144 | * the door handling checks for this failure and handles |
| 185 | * it properly. |
145 | * it properly. |
| 186 | */ |
146 | */ |
| 187 | if(difficulty==-1) { /* pick a random style from this dir. */ |
147 | if (difficulty == -1) |
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148 | { /* pick a random style from this dir. */ |
| 188 | if (only_subdirs) |
149 | if (only_subdirs) |
| 189 | style_map=NULL; |
150 | style_map = 0; |
| 190 | else { |
151 | else |
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152 | { |
| 191 | strcat(style_file_path,"/"); |
153 | strcat (style_file_path, "/"); |
| 192 | strcat(style_file_path,namelist[RANDOM()%n]); |
154 | strcat (style_file_path, namelist[RANDOM () % n]); |
| 193 | style_map = load_style_map(style_file_path); |
155 | style_map = maptile::find_sync (style_file_path); |
| 194 | } |
156 | } |
| 195 | } |
157 | } |
| 196 | else { /* find the map closest in difficulty */ |
158 | else |
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159 | { /* find the map closest in difficulty */ |
| 197 | int min_dist=32000,min_index=-1; |
160 | int min_dist = 32000, min_index = -1; |
| 198 | |
161 | |
| 199 | for(i=0;i<n;i++) { |
162 | for (i = 0; i < n; i++) |
| 200 | int dist; |
163 | { |
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164 | int dist; |
| 201 | char *mfile_name = strrchr(namelist[i],'_')+1; |
165 | char *mfile_name = strrchr (namelist[i], '_') + 1; |
| 202 | |
166 | |
| 203 | if((mfile_name-1) == NULL) { /* since there isn't a sequence, */ |
167 | if ((mfile_name - 1) == NULL) |
| 204 | int q; |
168 | { /* since there isn't a sequence, */ |
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169 | int q; |
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170 | |
| 205 | /*pick one at random to recurse */ |
171 | /*pick one at random to recurse */ |
| 206 | style_map= find_style(style_file_path, |
172 | style_map = find_style (style_file_path, namelist[RANDOM () % n], difficulty); |
| 207 | namelist[RANDOM()%n],difficulty); |
173 | for (q = 0; q < n; q++) |
| 208 | for (q=0; q<n; q++) |
174 | free (namelist[q]); |
| 209 | free(namelist[q]); |
175 | free (namelist); |
| 210 | free(namelist); |
176 | return style_map; |
| 211 | return style_map; |
177 | } |
| 212 | } else { |
178 | else |
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179 | { |
| 213 | dist = abs(difficulty-atoi(mfile_name)); |
180 | dist = abs (difficulty - atoi (mfile_name)); |
| 214 | if(dist<min_dist) { |
181 | if (dist < min_dist) |
| 215 | min_dist = dist; |
182 | { |
| 216 | min_index = i; |
183 | min_dist = dist; |
| 217 | } |
184 | min_index = i; |
| 218 | } |
185 | } |
| 219 | } |
186 | } |
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187 | } |
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188 | |
| 220 | /* presumably now we've found the "best" match for the |
189 | /* presumably now we've found the "best" match for the |
| 221 | difficulty. */ |
190 | difficulty. */ |
| 222 | strcat(style_file_path,"/"); |
191 | strcat (style_file_path, "/"); |
| 223 | strcat(style_file_path,namelist[min_index]); |
192 | strcat (style_file_path, namelist[min_index]); |
| 224 | style_map = load_style_map(style_file_path); |
193 | style_map = maptile::find_sync (style_file_path); |
| 225 | } |
194 | } |
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195 | |
| 226 | for (i=0; i<n; i++) |
196 | for (i = 0; i < n; i++) |
| 227 | free(namelist[i]); |
197 | free (namelist[i]); |
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198 | |
| 228 | free(namelist); |
199 | free (namelist); |
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200 | } |
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201 | |
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202 | if (style_map) |
| 229 | } |
203 | { |
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204 | style_map->load_sync (); |
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205 | style_map->deactivate (); |
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206 | } |
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207 | |
| 230 | return style_map; |
208 | return style_map; |
| 231 | |
209 | |
| 232 | } |
210 | } |
| 233 | |
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| 234 | |
211 | |
| 235 | /* picks a random object from a style map. |
212 | /* picks a random object from a style map. |
| 236 | * Redone by MSW so it should be faster and not use static |
213 | * Redone by MSW so it should be faster and not use static |
| 237 | * variables to generate tables. |
214 | * variables to generate tables. |
| 238 | */ |
215 | */ |
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216 | object * |
| 239 | object *pick_random_object(mapstruct *style) { |
217 | pick_random_object (maptile *style) |
| 240 | int x,y, limit=0; |
218 | { |
| 241 | object *new_obj; |
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| 242 | |
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| 243 | /* while returning a null object will result in a crash, that |
219 | /* while returning a null object will result in a crash, that |
| 244 | * is actually preferable to an infinite loop. That is because |
220 | * is actually preferable to an infinite loop. That is because |
| 245 | * most servers will automatically restart in case of crash. |
221 | * most servers will automatically restart in case of crash. |
| 246 | * Change the logic on getting the random space - shouldn't make |
222 | * Change the logic on getting the random space - shouldn't make |
| 247 | * any difference, but this seems clearer to me. |
223 | * any difference, but this seems clearer to me. |
| 248 | */ |
224 | */ |
| 249 | do { |
225 | for (int i = 1000; --i;) |
| 250 | limit++; |
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| 251 | x = RANDOM() % MAP_WIDTH(style); |
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| 252 | y = RANDOM() % MAP_HEIGHT(style); |
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| 253 | new_obj = get_map_ob(style,x,y); |
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| 254 | } while (new_obj == NULL && limit<1000); |
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| 255 | if (new_obj->head) return new_obj->head; |
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| 256 | else return new_obj; |
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| 257 | } |
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| 258 | |
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| 259 | |
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| 260 | void free_style_maps(void) |
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| 261 | { |
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| 262 | mapstruct *next; |
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| 263 | int style_maps=0; |
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| 264 | |
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| 265 | /* delete_map will try to free it from the linked list, |
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| 266 | * but won't find it, so we need to do it ourselves |
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| 267 | */ |
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| 268 | while (styles) { |
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| 269 | next = styles->next; |
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| 270 | delete_map(styles); |
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| 271 | styles=next; |
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| 272 | style_maps++; |
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| 273 | } |
226 | { |
| 274 | LOG(llevDebug,"free_style_maps: Freed %d maps\n", style_maps); |
227 | object *new_obj = style->at (RANDOM () % style->width, RANDOM () % style->height).bot; |
| 275 | } |
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| 276 | |
228 | |
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229 | if (new_obj) |
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230 | return new_obj->head_ (); |
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231 | } |
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232 | |
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233 | // instead of crashing in the unlikely case, try to return *something* |
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234 | return get_archetype ("blocked"); |
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235 | } |
