1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
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4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) any later version. |
11 | |
12 | * |
12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
16 | |
17 | * |
17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | |
21 | * |
21 | The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | */ |
23 | */ |
23 | |
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24 | |
24 | |
25 | #include <global.h> |
25 | #include <global.h> |
26 | #include <random_map.h> |
26 | #include <random_map.h> |
27 | #include <dirent.h> |
27 | #include <dirent.h> |
28 | #include <sys/stat.h> |
28 | #include <sys/stat.h> |
29 | #include <unistd.h> |
29 | #include <unistd.h> |
30 | #include "../include/autoconf.h" |
30 | #include "../include/autoconf.h" |
31 | |
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32 | |
31 | |
33 | static int |
32 | static int |
34 | pointer_strcmp (const void *p1, const void *p2) |
33 | pointer_strcmp (const void *p1, const void *p2) |
35 | { |
34 | { |
36 | const char *s1 = *(const char **) p1; |
35 | const char *s1 = *(const char **) p1; |
… | |
… | |
93 | |
92 | |
94 | *namelist = rn; |
93 | *namelist = rn; |
95 | return entries; |
94 | return entries; |
96 | } |
95 | } |
97 | |
96 | |
98 | |
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99 | |
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100 | |
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101 | |
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102 | /* this function loads and returns the map requested. |
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103 | * dirname, for example, is "/styles/wallstyles", stylename, is, |
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104 | * for example, "castle", difficulty is -1 when difficulty is |
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105 | * irrelevant to the style. If dirname is given, but stylename |
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106 | * isn't, and difficult is -1, it returns a random style map. |
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107 | * Otherwise, it tries to match the difficulty given with a style |
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108 | * file, named style_name_# where # is an integer |
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109 | */ |
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110 | |
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111 | /* remove extern, so visible to command_style_map_info function */ |
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112 | maptile *styles = NULL; |
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113 | |
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114 | |
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115 | maptile * |
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116 | load_style_map (char *style_name) |
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117 | { |
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118 | maptile *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; style_map = style_map->next) |
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122 | if (!strcmp (style_name, style_map->path)) |
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123 | return style_map; |
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124 | |
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125 | style_map = load_original_map (style_name, MAP_STYLE); |
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126 | |
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127 | /* Remove it from global list, put it on our local list */ |
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128 | if (style_map) |
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129 | { |
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130 | style_map->unlink (); |
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131 | |
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132 | style_map->next = styles; |
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133 | styles = style_map; |
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134 | } |
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135 | |
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136 | return style_map; |
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137 | } |
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138 | |
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139 | maptile * |
97 | maptile * |
140 | find_style (const char *dirname, const char *stylename, int difficulty) |
98 | find_style (const char *dirname, const char *stylename, int difficulty) |
141 | { |
99 | { |
142 | char style_file_path[256]; |
100 | char style_file_path[1024]; |
143 | char style_file_full_path[256]; |
101 | char style_file_full_path[1024]; |
144 | maptile *style_map = NULL; |
102 | maptile *style_map = NULL; |
145 | struct stat file_stat; |
103 | struct stat file_stat; |
146 | int i, only_subdirs = 0; |
104 | int i, only_subdirs = 0; |
147 | |
105 | |
148 | /* if stylename exists, set style_file_path to that file. */ |
106 | /* if stylename exists, set style_file_path to that file. */ |
… | |
… | |
151 | else /* otherwise, just use the dirname. We'll pick a random stylefile. */ |
109 | else /* otherwise, just use the dirname. We'll pick a random stylefile. */ |
152 | sprintf (style_file_path, "%s", dirname); |
110 | sprintf (style_file_path, "%s", dirname); |
153 | |
111 | |
154 | /* is what we were given a directory, or a file? */ |
112 | /* is what we were given a directory, or a file? */ |
155 | sprintf (style_file_full_path, "%s/maps%s", settings.datadir, style_file_path); |
113 | sprintf (style_file_full_path, "%s/maps%s", settings.datadir, style_file_path); |
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114 | |
156 | if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode)) |
115 | if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode)) |
157 | { |
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158 | style_map = load_style_map (style_file_path); |
116 | style_map = maptile::find_sync (style_file_path); |
159 | } |
117 | |
160 | if (style_map == NULL) /* maybe we were given a directory! */ |
118 | if (!style_map) /* maybe we were given a directory! */ |
161 | { |
119 | { |
162 | char **namelist; |
120 | char **namelist; |
163 | int n; |
121 | int n; |
164 | char style_dir_full_path[256]; |
122 | char style_dir_full_path[256]; |
165 | |
123 | |
… | |
… | |
186 | * it properly. |
144 | * it properly. |
187 | */ |
145 | */ |
188 | if (difficulty == -1) |
146 | if (difficulty == -1) |
189 | { /* pick a random style from this dir. */ |
147 | { /* pick a random style from this dir. */ |
190 | if (only_subdirs) |
148 | if (only_subdirs) |
191 | style_map = NULL; |
149 | style_map = 0; |
192 | else |
150 | else |
193 | { |
151 | { |
194 | strcat (style_file_path, "/"); |
152 | strcat (style_file_path, "/"); |
195 | strcat (style_file_path, namelist[RANDOM () % n]); |
153 | strcat (style_file_path, namelist[rndm (n)]); |
196 | style_map = load_style_map (style_file_path); |
154 | style_map = maptile::find_sync (style_file_path); |
197 | } |
155 | } |
198 | } |
156 | } |
199 | else |
157 | else |
200 | { /* find the map closest in difficulty */ |
158 | { /* find the map closest in difficulty */ |
201 | int min_dist = 32000, min_index = -1; |
159 | int min_dist = 32000, min_index = -1; |
… | |
… | |
208 | if ((mfile_name - 1) == NULL) |
166 | if ((mfile_name - 1) == NULL) |
209 | { /* since there isn't a sequence, */ |
167 | { /* since there isn't a sequence, */ |
210 | int q; |
168 | int q; |
211 | |
169 | |
212 | /*pick one at random to recurse */ |
170 | /*pick one at random to recurse */ |
213 | style_map = find_style (style_file_path, namelist[RANDOM () % n], difficulty); |
171 | style_map = find_style (style_file_path, namelist[rndm (n)], difficulty); |
214 | for (q = 0; q < n; q++) |
172 | for (q = 0; q < n; q++) |
215 | free (namelist[q]); |
173 | free (namelist[q]); |
216 | free (namelist); |
174 | free (namelist); |
217 | return style_map; |
175 | return style_map; |
218 | } |
176 | } |
… | |
… | |
224 | min_dist = dist; |
182 | min_dist = dist; |
225 | min_index = i; |
183 | min_index = i; |
226 | } |
184 | } |
227 | } |
185 | } |
228 | } |
186 | } |
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187 | |
229 | /* presumably now we've found the "best" match for the |
188 | /* presumably now we've found the "best" match for the |
230 | difficulty. */ |
189 | difficulty. */ |
231 | strcat (style_file_path, "/"); |
190 | strcat (style_file_path, "/"); |
232 | strcat (style_file_path, namelist[min_index]); |
191 | strcat (style_file_path, namelist[min_index]); |
233 | style_map = load_style_map (style_file_path); |
192 | style_map = maptile::find_sync (style_file_path); |
234 | } |
193 | } |
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194 | |
235 | for (i = 0; i < n; i++) |
195 | for (i = 0; i < n; i++) |
236 | free (namelist[i]); |
196 | free (namelist[i]); |
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197 | |
237 | free (namelist); |
198 | free (namelist); |
238 | } |
199 | } |
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200 | |
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201 | if (style_map) |
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202 | { |
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203 | style_map->load_sync (); |
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204 | style_map->deactivate (); |
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205 | } |
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206 | |
239 | return style_map; |
207 | return style_map; |
240 | |
208 | |
241 | } |
209 | } |
242 | |
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243 | |
210 | |
244 | /* picks a random object from a style map. |
211 | /* picks a random object from a style map. |
245 | * Redone by MSW so it should be faster and not use static |
212 | * Redone by MSW so it should be faster and not use static |
246 | * variables to generate tables. |
213 | * variables to generate tables. |
247 | */ |
214 | */ |
248 | object * |
215 | object * |
249 | pick_random_object (maptile *style) |
216 | pick_random_object (maptile *style) |
250 | { |
217 | { |
251 | int x, y, limit = 0; |
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252 | object *new_obj; |
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253 | |
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254 | /* while returning a null object will result in a crash, that |
218 | /* while returning a null object will result in a crash, that |
255 | * is actually preferable to an infinite loop. That is because |
219 | * is actually preferable to an infinite loop. That is because |
256 | * most servers will automatically restart in case of crash. |
220 | * most servers will automatically restart in case of crash. |
257 | * Change the logic on getting the random space - shouldn't make |
221 | * Change the logic on getting the random space - shouldn't make |
258 | * any difference, but this seems clearer to me. |
222 | * any difference, but this seems clearer to me. |
259 | */ |
223 | */ |
260 | do |
224 | for (int i = 1000; --i;) |
261 | { |
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262 | limit++; |
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263 | x = RANDOM () % style->width; |
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264 | y = RANDOM () % style->height; |
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265 | new_obj = GET_MAP_OB (style, x, y); |
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266 | } |
225 | { |
267 | while (new_obj == NULL && limit < 1000); |
226 | object *new_obj = style->at (rndm (style->width), rndm (style->height)).bot; |
268 | if (new_obj->head) |
227 | |
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228 | if (new_obj) |
269 | return new_obj->head; |
229 | return new_obj->head_ (); |
270 | else |
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271 | return new_obj; |
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272 | } |
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273 | |
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274 | |
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275 | void |
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276 | free_style_maps (void) |
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277 | { |
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278 | maptile *next; |
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279 | int style_maps = 0; |
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280 | |
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281 | /* delete_map will try to free it from the linked list, |
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282 | * but won't find it, so we need to do it ourselves |
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283 | */ |
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284 | while (styles) |
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285 | { |
230 | } |
286 | next = styles->next; |
231 | |
287 | delete_map (styles); |
232 | // instead of crashing in the unlikely case, try to return *something* |
288 | styles = next; |
233 | return get_archetype ("blocked"); |
289 | style_maps++; |
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290 | } |
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291 | LOG (llevDebug, "free_style_maps: Freed %d maps\n", style_maps); |
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292 | } |
234 | } |