1 |
elmex |
1.1 |
/* |
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pippijn |
1.21 |
* CrossFire, A Multiplayer game for X-windows |
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* |
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* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
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* Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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* Copyright (C) 1992 Frank Tore Johansen |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* The authors can be reached via e-mail at <crossfire@schmorp.de> |
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*/ |
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elmex |
1.1 |
|
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#include <global.h> |
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#include <random_map.h> |
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pippijn |
1.6 |
#include <dirent.h> |
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#include <sys/stat.h> |
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#include <unistd.h> |
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#include "../include/autoconf.h" |
31 |
elmex |
1.1 |
|
32 |
root |
1.25 |
// NAME_MAX may not be defined on POSIX systems |
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#ifndef NAME_MAX |
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# define NAME_MAX 255 |
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#endif |
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root |
1.3 |
static int |
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pointer_strcmp (const void *p1, const void *p2) |
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elmex |
1.1 |
{ |
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root |
1.3 |
const char *s1 = *(const char **) p1; |
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const char *s2 = *(const char **) p2; |
42 |
elmex |
1.1 |
|
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root |
1.3 |
return (strcmp (s1, s2)); |
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elmex |
1.1 |
} |
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/* This is our own version of scandir/select_regular_files/sort. |
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* To support having subdirectories in styles, we need to know |
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* if in fact the directory we read is a subdirectory. However, |
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* we can't get that through the normal dirent entry. So |
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* instead, we do our own where we do have the full directory |
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* path so can do stat calls to see if in fact it is a directory. |
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* dir is the name of the director to scan. |
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* namelist is the array of file names returned. IT needs to be |
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* freed by the caller. |
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* skip_dirs controls our behavioru - if nonzero, we don't |
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* skip any subdirectories - if zero, we store those away, |
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* since there are cases where we want to choose a random |
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* directory. |
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*/ |
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root |
1.3 |
int |
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load_dir (const char *dir, char ***namelist, int skip_dirs) |
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elmex |
1.1 |
{ |
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root |
1.3 |
DIR *dp; |
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struct dirent *d; |
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int entries = 0, entry_size = 0; |
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char name[NAME_MAX + 1], **rn = NULL; |
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struct stat sb; |
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dp = opendir (dir); |
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root |
1.23 |
if (!dp) |
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root |
1.3 |
return -1; |
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|
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root |
1.23 |
while ((d = readdir (dp))) |
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root |
1.3 |
{ |
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sprintf (name, "%s/%s", dir, d->d_name); |
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if (skip_dirs) |
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{ |
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stat (name, &sb); |
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if (S_ISDIR (sb.st_mode)) |
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root |
1.23 |
continue; |
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root |
1.2 |
} |
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root |
1.3 |
if (entries == entry_size) |
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{ |
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entry_size += 10; |
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rn = (char **) realloc (rn, sizeof (char *) * entry_size); |
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root |
1.2 |
} |
88 |
root |
1.7 |
rn[entries] = strdup (d->d_name); |
89 |
root |
1.3 |
entries++; |
90 |
elmex |
1.1 |
|
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} |
92 |
root |
1.3 |
(void) closedir (dp); |
93 |
elmex |
1.1 |
|
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root |
1.3 |
qsort (rn, entries, sizeof (char *), pointer_strcmp); |
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elmex |
1.1 |
|
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root |
1.3 |
*namelist = rn; |
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return entries; |
98 |
elmex |
1.1 |
} |
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root |
1.5 |
maptile * |
101 |
root |
1.3 |
find_style (const char *dirname, const char *stylename, int difficulty) |
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{ |
103 |
root |
1.18 |
char style_file_path[1024]; |
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char style_file_full_path[1024]; |
105 |
root |
1.5 |
maptile *style_map = NULL; |
106 |
root |
1.3 |
struct stat file_stat; |
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int i, only_subdirs = 0; |
108 |
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109 |
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/* if stylename exists, set style_file_path to that file. */ |
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if (stylename && strlen (stylename) > 0) |
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sprintf (style_file_path, "%s/%s", dirname, stylename); |
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else /* otherwise, just use the dirname. We'll pick a random stylefile. */ |
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sprintf (style_file_path, "%s", dirname); |
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/* is what we were given a directory, or a file? */ |
116 |
root |
1.23 |
sprintf (style_file_full_path, "%s/maps%s.map", settings.datadir, style_file_path); |
117 |
root |
1.14 |
|
118 |
root |
1.3 |
if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode)) |
119 |
root |
1.19 |
style_map = maptile::find_sync (style_file_path); |
120 |
root |
1.13 |
|
121 |
root |
1.17 |
if (!style_map) /* maybe we were given a directory! */ |
122 |
elmex |
1.1 |
{ |
123 |
root |
1.3 |
char **namelist; |
124 |
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int n; |
125 |
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char style_dir_full_path[256]; |
126 |
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/* get the names of all the files in that directory */ |
128 |
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sprintf (style_dir_full_path, "%s/maps%s", settings.datadir, style_file_path); |
129 |
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130 |
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/* First, skip subdirectories. If we don't find anything, then try again |
131 |
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* without skipping subdirs. |
132 |
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*/ |
133 |
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n = load_dir (style_dir_full_path, &namelist, 1); |
134 |
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135 |
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if (n <= 0) |
136 |
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{ |
137 |
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n = load_dir (style_dir_full_path, &namelist, 0); |
138 |
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only_subdirs = 1; |
139 |
root |
1.2 |
} |
140 |
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141 |
root |
1.3 |
if (n <= 0) |
142 |
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return 0; /* nothing to load. Bye. */ |
143 |
root |
1.2 |
|
144 |
root |
1.3 |
/* Picks a random map. Note that if this is all directories, |
145 |
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* we know it won't be able to load, so save a few ticks. |
146 |
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* the door handling checks for this failure and handles |
147 |
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* it properly. |
148 |
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*/ |
149 |
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if (difficulty == -1) |
150 |
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{ /* pick a random style from this dir. */ |
151 |
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if (only_subdirs) |
152 |
root |
1.13 |
style_map = 0; |
153 |
root |
1.3 |
else |
154 |
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{ |
155 |
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strcat (style_file_path, "/"); |
156 |
root |
1.22 |
strcat (style_file_path, namelist[rndm (n)]); |
157 |
root |
1.19 |
style_map = maptile::find_sync (style_file_path); |
158 |
root |
1.2 |
} |
159 |
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} |
160 |
root |
1.3 |
else |
161 |
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{ /* find the map closest in difficulty */ |
162 |
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int min_dist = 32000, min_index = -1; |
163 |
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164 |
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for (i = 0; i < n; i++) |
165 |
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{ |
166 |
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int dist; |
167 |
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char *mfile_name = strrchr (namelist[i], '_') + 1; |
168 |
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169 |
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if ((mfile_name - 1) == NULL) |
170 |
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{ /* since there isn't a sequence, */ |
171 |
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int q; |
172 |
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173 |
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/*pick one at random to recurse */ |
174 |
root |
1.22 |
style_map = find_style (style_file_path, namelist[rndm (n)], difficulty); |
175 |
root |
1.3 |
for (q = 0; q < n; q++) |
176 |
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free (namelist[q]); |
177 |
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free (namelist); |
178 |
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return style_map; |
179 |
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} |
180 |
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else |
181 |
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{ |
182 |
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dist = abs (difficulty - atoi (mfile_name)); |
183 |
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if (dist < min_dist) |
184 |
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{ |
185 |
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min_dist = dist; |
186 |
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min_index = i; |
187 |
root |
1.2 |
} |
188 |
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} |
189 |
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} |
190 |
root |
1.15 |
|
191 |
root |
1.3 |
/* presumably now we've found the "best" match for the |
192 |
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difficulty. */ |
193 |
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strcat (style_file_path, "/"); |
194 |
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strcat (style_file_path, namelist[min_index]); |
195 |
root |
1.19 |
style_map = maptile::find_sync (style_file_path); |
196 |
root |
1.2 |
} |
197 |
root |
1.13 |
|
198 |
root |
1.3 |
for (i = 0; i < n; i++) |
199 |
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free (namelist[i]); |
200 |
root |
1.13 |
|
201 |
root |
1.3 |
free (namelist); |
202 |
elmex |
1.1 |
} |
203 |
root |
1.13 |
|
204 |
root |
1.15 |
if (style_map) |
205 |
root |
1.19 |
{ |
206 |
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style_map->load_sync (); |
207 |
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style_map->deactivate (); |
208 |
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} |
209 |
root |
1.15 |
|
210 |
elmex |
1.1 |
return style_map; |
211 |
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} |