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Comparing deliantra/server/random_maps/style.C (file contents):
Revision 1.1 by elmex, Sun Aug 13 17:16:03 2006 UTC vs.
Revision 1.11 by root, Wed Dec 27 13:13:47 2006 UTC

1/*
2 * static char *rcsid_style_c =
3 * "$Id: style.C,v 1.1 2006/08/13 17:16:03 elmex Exp $";
4 */
5
6/* 1/*
7 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
8 3
9 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 4 Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10 Copyright (C) 1992 Frank Tore Johansen 5 Copyright (C) 1992 Frank Tore Johansen
… …
21 16
22 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software 18 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 20
26 The authors can be reached via e-mail at crossfire-devel@real-time.com 21 The authors can be reached via e-mail at <crossfire@schmorp.de>
27*/ 22*/
28 23
29 24
30#include <global.h> 25#include <global.h>
31#include <random_map.h> 26#include <random_map.h>
32#ifndef WIN32 /* ---win32 exclude headers */
33#include <dirent.h> 27#include <dirent.h>
34#include <sys/stat.h> 28#include <sys/stat.h>
35#include <unistd.h> 29#include <unistd.h>
36#include "../include/autoconf.h" 30#include "../include/autoconf.h"
37#endif /* win32 */
38 31
39 32
33static int
40static int pointer_strcmp(const void *p1, const void *p2) 34pointer_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 */
56int
62int load_dir (const char *dir, char ***namelist, int skip_dirs) 57load_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)
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)
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 }
79 }
82 80
83 if (entries == entry_size) { 81 if (entries == entry_size)
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
100 99
101 100
102 101
103/* this function loads and returns the map requested. 102/* this function loads and returns the map requested.
104 * dirname, for example, is "/styles/wallstyles", stylename, is, 103 * dirname, for example, is "/styles/wallstyles", stylename, is,
105 * for example, "castle", difficulty is -1 when difficulty is 104 * for example, "castle", difficulty is -1 when difficulty is
106 * irrelevant to the style. If dirname is given, but stylename 105 * irrelevant to the style. If dirname is given, but stylename
107 * isn't, and difficult is -1, it returns a random style map. 106 * isn't, and difficult is -1, it returns a random style map.
108 * Otherwise, it tries to match the difficulty given with a style 107 * Otherwise, it tries to match the difficulty given with a style
109 * file, named style_name_# where # is an integer 108 * file, named style_name_# where # is an integer
110 */ 109 */
111 110
112/* remove extern, so visible to command_style_map_info function */ 111/* remove extern, so visible to command_style_map_info function */
113mapstruct *styles=NULL; 112maptile *styles = NULL;
114 113
115 114
115maptile *
116mapstruct *load_style_map(char *style_name) 116load_style_map (char *style_name)
117{ 117{
118 mapstruct *style_map; 118 maptile *style_map;
119 119
120 /* Given a file. See if its in memory */ 120 /* Given a file. See if its in memory */
121 for (style_map = styles; style_map!=NULL; style_map=style_map->next) { 121 for (style_map = styles; style_map; style_map = style_map->next)
122 if (!strcmp(style_name, style_map->path)) return style_map; 122 if (!strcmp (style_name, style_map->path))
123 } 123 return style_map;
124
124 style_map = load_original_map(style_name,MAP_STYLE); 125 style_map = load_original_map (style_name, MAP_STYLE);
126
125 /* Remove it from global list, put it on our local list */ 127 /* Remove it from global list, put it on our local list */
126 if (style_map) { 128 if (style_map)
127 mapstruct *tmp; 129 {
130 style_map->unlink ();
128 131
129 if (style_map == first_map)
130 first_map = style_map->next;
131 else {
132 for (tmp = first_map; tmp && tmp->next != style_map; tmp = tmp->next);
133 if(tmp)
134 tmp->next = style_map->next;
135 }
136 style_map->next = styles; 132 style_map->next = styles;
137 styles = style_map; 133 styles = style_map;
138 } 134 }
135
139 return style_map; 136 return style_map;
140} 137}
141 138
139maptile *
142mapstruct *find_style(const char *dirname,const char *stylename,int difficulty) { 140find_style (const char *dirname, const char *stylename, int difficulty)
141{
143 char style_file_path[256]; 142 char style_file_path[256];
144 char style_file_full_path[256]; 143 char style_file_full_path[256];
145 mapstruct *style_map = NULL; 144 maptile *style_map = NULL;
146 struct stat file_stat; 145 struct stat file_stat;
147 int i, only_subdirs=0; 146 int i, only_subdirs = 0;
148 147
149 /* if stylename exists, set style_file_path to that file.*/ 148 /* if stylename exists, set style_file_path to that file. */
150 if(stylename && strlen(stylename)>0) 149 if (stylename && strlen (stylename) > 0)
151 sprintf(style_file_path,"%s/%s",dirname,stylename); 150 sprintf (style_file_path, "%s/%s", dirname, stylename);
152 else /* otherwise, just use the dirname. We'll pick a random stylefile.*/ 151 else /* otherwise, just use the dirname. We'll pick a random stylefile. */
153 sprintf(style_file_path,"%s",dirname); 152 sprintf (style_file_path, "%s", dirname);
154 153
155 /* is what we were given a directory, or a file? */ 154 /* is what we were given a directory, or a file? */
156 sprintf(style_file_full_path,"%s/maps%s",settings.datadir,style_file_path); 155 sprintf (style_file_full_path, "%s/maps%s", settings.datadir, style_file_path);
157 if (stat(style_file_full_path, &file_stat) == 0 156 if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode))
158 && !S_ISDIR(file_stat.st_mode)) {
159 style_map=load_style_map(style_file_path);
160 } 157 {
161 if(style_map == NULL) /* maybe we were given a directory! */
162 {
163 char **namelist;
164 int n;
165 char style_dir_full_path[256];
166
167 /* get the names of all the files in that directory */
168 sprintf(style_dir_full_path,"%s/maps%s",settings.datadir,style_file_path);
169
170 /* First, skip subdirectories. If we don't find anything, then try again
171 * without skipping subdirs.
172 */
173 n = load_dir(style_dir_full_path, &namelist, 1);
174
175 if (n<=0) {
176 n = load_dir(style_dir_full_path, &namelist, 0);
177 only_subdirs=1;
178 }
179
180 if (n<=0) return 0; /* nothing to load. Bye. */
181
182 /* 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.
184 * the door handling checks for this failure and handles
185 * it properly.
186 */
187 if(difficulty==-1) { /* pick a random style from this dir. */
188 if (only_subdirs)
189 style_map=NULL;
190 else {
191 strcat(style_file_path,"/");
192 strcat(style_file_path,namelist[RANDOM()%n]);
193 style_map = load_style_map(style_file_path);
194 }
195 }
196 else { /* find the map closest in difficulty */
197 int min_dist=32000,min_index=-1;
198
199 for(i=0;i<n;i++) {
200 int dist;
201 char *mfile_name = strrchr(namelist[i],'_')+1;
202
203 if((mfile_name-1) == NULL) { /* since there isn't a sequence, */
204 int q;
205 /*pick one at random to recurse */
206 style_map= find_style(style_file_path,
207 namelist[RANDOM()%n],difficulty);
208 for (q=0; q<n; q++)
209 free(namelist[q]);
210 free(namelist);
211 return style_map;
212 } else {
213 dist = abs(difficulty-atoi(mfile_name));
214 if(dist<min_dist) {
215 min_dist = dist;
216 min_index = i;
217 }
218 }
219 }
220 /* presumably now we've found the "best" match for the
221 difficulty. */
222 strcat(style_file_path,"/");
223 strcat(style_file_path,namelist[min_index]);
224 style_map = load_style_map(style_file_path); 158 style_map = load_style_map (style_file_path);
225 } 159 }
160 if (style_map == NULL) /* maybe we were given a directory! */
161 {
162 char **namelist;
163 int n;
164 char style_dir_full_path[256];
165
166 /* get the names of all the files in that directory */
167 sprintf (style_dir_full_path, "%s/maps%s", settings.datadir, style_file_path);
168
169 /* First, skip subdirectories. If we don't find anything, then try again
170 * without skipping subdirs.
171 */
172 n = load_dir (style_dir_full_path, &namelist, 1);
173
174 if (n <= 0)
175 {
176 n = load_dir (style_dir_full_path, &namelist, 0);
177 only_subdirs = 1;
178 }
179
180 if (n <= 0)
181 return 0; /* nothing to load. Bye. */
182
183 /* Picks a random map. Note that if this is all directories,
184 * we know it won't be able to load, so save a few ticks.
185 * the door handling checks for this failure and handles
186 * it properly.
187 */
188 if (difficulty == -1)
189 { /* pick a random style from this dir. */
190 if (only_subdirs)
191 style_map = NULL;
192 else
193 {
194 strcat (style_file_path, "/");
195 strcat (style_file_path, namelist[RANDOM () % n]);
196 style_map = load_style_map (style_file_path);
197 }
198 }
199 else
200 { /* find the map closest in difficulty */
201 int min_dist = 32000, min_index = -1;
202
203 for (i = 0; i < n; i++)
204 {
205 int dist;
206 char *mfile_name = strrchr (namelist[i], '_') + 1;
207
208 if ((mfile_name - 1) == NULL)
209 { /* since there isn't a sequence, */
210 int q;
211
212 /*pick one at random to recurse */
213 style_map = find_style (style_file_path, namelist[RANDOM () % n], difficulty);
214 for (q = 0; q < n; q++)
215 free (namelist[q]);
216 free (namelist);
217 return style_map;
218 }
219 else
220 {
221 dist = abs (difficulty - atoi (mfile_name));
222 if (dist < min_dist)
223 {
224 min_dist = dist;
225 min_index = i;
226 }
227 }
228 }
229 /* presumably now we've found the "best" match for the
230 difficulty. */
231 strcat (style_file_path, "/");
232 strcat (style_file_path, namelist[min_index]);
233 style_map = load_style_map (style_file_path);
234 }
226 for (i=0; i<n; i++) 235 for (i = 0; i < n; i++)
227 free(namelist[i]); 236 free (namelist[i]);
228 free(namelist); 237 free (namelist);
229 } 238 }
230 return style_map; 239 return style_map;
231 240
232} 241}
233 242
234 243
235/* picks a random object from a style map. 244/* picks a random object from a style map.
236 * Redone by MSW so it should be faster and not use static 245 * Redone by MSW so it should be faster and not use static
237 * variables to generate tables. 246 * variables to generate tables.
238 */ 247 */
248object *
239object *pick_random_object(mapstruct *style) { 249pick_random_object (maptile *style)
250{
240 int x,y, limit=0; 251 int x, y, limit = 0;
241 object *new_obj; 252 object *new_obj;
242 253
243 /* while returning a null object will result in a crash, that 254 /* while returning a null object will result in a crash, that
244 * is actually preferable to an infinite loop. That is because 255 * is actually preferable to an infinite loop. That is because
245 * most servers will automatically restart in case of crash. 256 * most servers will automatically restart in case of crash.
246 * Change the logic on getting the random space - shouldn't make 257 * Change the logic on getting the random space - shouldn't make
247 * any difference, but this seems clearer to me. 258 * any difference, but this seems clearer to me.
248 */ 259 */
260 do
249 do { 261 {
250 limit++; 262 limit++;
251 x = RANDOM() % MAP_WIDTH(style); 263 x = RANDOM () % style->width;
252 y = RANDOM() % MAP_HEIGHT(style); 264 y = RANDOM () % style->height;
253 new_obj = get_map_ob(style,x,y); 265 new_obj = GET_MAP_OB (style, x, y);
266 }
254 } while (new_obj == NULL && limit<1000); 267 while (new_obj == NULL && limit < 1000);
255 if (new_obj->head) return new_obj->head; 268 if (new_obj->head)
269 return new_obj->head;
270 else
256 else return new_obj; 271 return new_obj;
257} 272}
258
259 273
274
275void
260void free_style_maps(void) 276free_style_maps (void)
261{ 277{
262 mapstruct *next; 278 maptile *next;
263 int style_maps=0; 279 int style_maps = 0;
264 280
265 /* delete_map will try to free it from the linked list, 281 /* delete_map will try to free it from the linked list,
266 * but won't find it, so we need to do it ourselves 282 * but won't find it, so we need to do it ourselves
267 */ 283 */
268 while (styles) { 284 while (styles)
285 {
269 next = styles->next; 286 next = styles->next;
270 delete_map(styles); 287 delete_map (styles);
271 styles=next; 288 styles = next;
272 style_maps++; 289 style_maps++;
273 } 290 }
274 LOG(llevDebug,"free_style_maps: Freed %d maps\n", style_maps); 291 LOG (llevDebug, "free_style_maps: Freed %d maps\n", style_maps);
275} 292}
276

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