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 | |
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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 */ |
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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 */ |
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38 | |
31 | |
39 | |
32 | |
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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 | |
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 | maptile * |
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) |
112 | load_style_map (char *style_name) |
117 | { |
113 | { |
118 | mapstruct *style_map; |
114 | maptile *style_map = maptile::find_map (style_name, 0); |
119 | |
115 | style_map->load (); |
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) { |
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143 | char style_file_path[256]; |
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144 | char style_file_full_path[256]; |
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145 | mapstruct *style_map = NULL; |
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146 | struct stat file_stat; |
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147 | int i, only_subdirs=0; |
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148 | |
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149 | /* if stylename exists, set style_file_path to that file.*/ |
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150 | if(stylename && strlen(stylename)>0) |
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151 | sprintf(style_file_path,"%s/%s",dirname,stylename); |
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152 | else /* otherwise, just use the dirname. We'll pick a random stylefile.*/ |
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153 | sprintf(style_file_path,"%s",dirname); |
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154 | |
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155 | /* is what we were given a directory, or a file? */ |
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156 | sprintf(style_file_full_path,"%s/maps%s",settings.datadir,style_file_path); |
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157 | if (stat(style_file_full_path, &file_stat) == 0 |
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158 | && !S_ISDIR(file_stat.st_mode)) { |
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159 | style_map=load_style_map(style_file_path); |
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160 | } |
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161 | if(style_map == NULL) /* maybe we were given a directory! */ |
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162 | { |
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163 | char **namelist; |
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164 | int n; |
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165 | char style_dir_full_path[256]; |
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166 | |
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167 | /* get the names of all the files in that directory */ |
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168 | sprintf(style_dir_full_path,"%s/maps%s",settings.datadir,style_file_path); |
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169 | |
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170 | /* First, skip subdirectories. If we don't find anything, then try again |
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171 | * without skipping subdirs. |
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172 | */ |
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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); |
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177 | only_subdirs=1; |
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178 | } |
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179 | |
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180 | if (n<=0) return 0; /* nothing to load. Bye. */ |
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181 | |
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182 | /* Picks a random map. Note that if this is all directories, |
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183 | * we know it won't be able to load, so save a few ticks. |
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184 | * the door handling checks for this failure and handles |
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185 | * it properly. |
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186 | */ |
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187 | if(difficulty==-1) { /* pick a random style from this dir. */ |
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188 | if (only_subdirs) |
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189 | style_map=NULL; |
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190 | else { |
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191 | strcat(style_file_path,"/"); |
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192 | strcat(style_file_path,namelist[RANDOM()%n]); |
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193 | style_map = load_style_map(style_file_path); |
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194 | } |
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195 | } |
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196 | else { /* find the map closest in difficulty */ |
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197 | int min_dist=32000,min_index=-1; |
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198 | |
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199 | for(i=0;i<n;i++) { |
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200 | int dist; |
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201 | char *mfile_name = strrchr(namelist[i],'_')+1; |
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202 | |
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203 | if((mfile_name-1) == NULL) { /* since there isn't a sequence, */ |
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204 | int q; |
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205 | /*pick one at random to recurse */ |
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206 | style_map= find_style(style_file_path, |
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207 | namelist[RANDOM()%n],difficulty); |
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208 | for (q=0; q<n; q++) |
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209 | free(namelist[q]); |
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210 | free(namelist); |
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211 | return style_map; |
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212 | } else { |
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213 | dist = abs(difficulty-atoi(mfile_name)); |
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214 | if(dist<min_dist) { |
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215 | min_dist = dist; |
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216 | min_index = i; |
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217 | } |
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218 | } |
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219 | } |
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220 | /* presumably now we've found the "best" match for the |
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221 | difficulty. */ |
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222 | strcat(style_file_path,"/"); |
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223 | strcat(style_file_path,namelist[min_index]); |
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224 | style_map = load_style_map(style_file_path); |
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225 | } |
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226 | for (i=0; i<n; i++) |
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227 | free(namelist[i]); |
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228 | free(namelist); |
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229 | } |
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230 | return style_map; |
116 | return style_map; |
231 | |
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232 | } |
117 | } |
233 | |
118 | |
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119 | maptile * |
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120 | find_style (const char *dirname, const char *stylename, int difficulty) |
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121 | { |
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122 | char style_file_path[256]; |
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123 | char style_file_full_path[256]; |
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124 | maptile *style_map = NULL; |
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125 | struct stat file_stat; |
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126 | int i, only_subdirs = 0; |
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127 | |
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128 | /* if stylename exists, set style_file_path to that file. */ |
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129 | if (stylename && strlen (stylename) > 0) |
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130 | sprintf (style_file_path, "%s/%s", dirname, stylename); |
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131 | else /* otherwise, just use the dirname. We'll pick a random stylefile. */ |
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132 | sprintf (style_file_path, "%s", dirname); |
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133 | |
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134 | /* is what we were given a directory, or a file? */ |
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135 | sprintf (style_file_full_path, "%s/maps%s", settings.datadir, style_file_path); |
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136 | if (stat (style_file_full_path, &file_stat) == 0 && !S_ISDIR (file_stat.st_mode)) |
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137 | { |
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138 | style_map = load_style_map (style_file_path); |
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139 | } |
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140 | if (style_map == NULL) /* maybe we were given a directory! */ |
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141 | { |
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142 | char **namelist; |
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143 | int n; |
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144 | char style_dir_full_path[256]; |
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145 | |
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146 | /* get the names of all the files in that directory */ |
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147 | sprintf (style_dir_full_path, "%s/maps%s", settings.datadir, style_file_path); |
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148 | |
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149 | /* First, skip subdirectories. If we don't find anything, then try again |
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150 | * without skipping subdirs. |
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151 | */ |
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152 | n = load_dir (style_dir_full_path, &namelist, 1); |
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153 | |
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154 | if (n <= 0) |
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155 | { |
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156 | n = load_dir (style_dir_full_path, &namelist, 0); |
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157 | only_subdirs = 1; |
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158 | } |
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159 | |
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160 | if (n <= 0) |
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161 | return 0; /* nothing to load. Bye. */ |
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162 | |
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163 | /* Picks a random map. Note that if this is all directories, |
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164 | * we know it won't be able to load, so save a few ticks. |
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165 | * the door handling checks for this failure and handles |
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166 | * it properly. |
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167 | */ |
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168 | if (difficulty == -1) |
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169 | { /* pick a random style from this dir. */ |
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170 | if (only_subdirs) |
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171 | style_map = NULL; |
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172 | else |
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173 | { |
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174 | strcat (style_file_path, "/"); |
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175 | strcat (style_file_path, namelist[RANDOM () % n]); |
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176 | style_map = load_style_map (style_file_path); |
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177 | } |
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178 | } |
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179 | else |
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180 | { /* find the map closest in difficulty */ |
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181 | int min_dist = 32000, min_index = -1; |
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182 | |
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183 | for (i = 0; i < n; i++) |
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184 | { |
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185 | int dist; |
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186 | char *mfile_name = strrchr (namelist[i], '_') + 1; |
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187 | |
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188 | if ((mfile_name - 1) == NULL) |
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189 | { /* since there isn't a sequence, */ |
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190 | int q; |
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191 | |
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192 | /*pick one at random to recurse */ |
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193 | style_map = find_style (style_file_path, namelist[RANDOM () % n], difficulty); |
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194 | for (q = 0; q < n; q++) |
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195 | free (namelist[q]); |
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196 | free (namelist); |
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197 | return style_map; |
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198 | } |
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199 | else |
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200 | { |
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201 | dist = abs (difficulty - atoi (mfile_name)); |
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202 | if (dist < min_dist) |
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203 | { |
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204 | min_dist = dist; |
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205 | min_index = i; |
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206 | } |
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207 | } |
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208 | } |
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209 | /* presumably now we've found the "best" match for the |
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210 | difficulty. */ |
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211 | strcat (style_file_path, "/"); |
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212 | strcat (style_file_path, namelist[min_index]); |
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213 | style_map = load_style_map (style_file_path); |
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214 | } |
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215 | for (i = 0; i < n; i++) |
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216 | free (namelist[i]); |
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217 | free (namelist); |
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218 | } |
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219 | return style_map; |
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220 | |
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221 | } |
234 | |
222 | |
235 | /* picks a random object from a style map. |
223 | /* picks a random object from a style map. |
236 | * Redone by MSW so it should be faster and not use static |
224 | * Redone by MSW so it should be faster and not use static |
237 | * variables to generate tables. |
225 | * variables to generate tables. |
238 | */ |
226 | */ |
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227 | object * |
239 | object *pick_random_object(mapstruct *style) { |
228 | pick_random_object (maptile *style) |
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229 | { |
240 | int x,y, limit=0; |
230 | int x, y, limit = 0; |
241 | object *new_obj; |
231 | object *new_obj; |
242 | |
232 | |
243 | /* while returning a null object will result in a crash, that |
233 | /* while returning a null object will result in a crash, that |
244 | * is actually preferable to an infinite loop. That is because |
234 | * is actually preferable to an infinite loop. That is because |
245 | * most servers will automatically restart in case of crash. |
235 | * most servers will automatically restart in case of crash. |
246 | * Change the logic on getting the random space - shouldn't make |
236 | * Change the logic on getting the random space - shouldn't make |
247 | * any difference, but this seems clearer to me. |
237 | * any difference, but this seems clearer to me. |
248 | */ |
238 | */ |
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239 | do |
249 | do { |
240 | { |
250 | limit++; |
241 | limit++; |
251 | x = RANDOM() % MAP_WIDTH(style); |
242 | x = RANDOM () % style->width; |
252 | y = RANDOM() % MAP_HEIGHT(style); |
243 | y = RANDOM () % style->height; |
253 | new_obj = get_map_ob(style,x,y); |
244 | new_obj = GET_MAP_OB (style, x, y); |
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245 | } |
254 | } while (new_obj == NULL && limit<1000); |
246 | while (new_obj == NULL && limit < 1000); |
255 | if (new_obj->head) return new_obj->head; |
247 | |
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248 | if (new_obj->head) |
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249 | return new_obj->head; |
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250 | else |
256 | else return new_obj; |
251 | return new_obj; |
257 | } |
252 | } |
258 | |
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259 | |
253 | |
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 | } |
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274 | LOG(llevDebug,"free_style_maps: Freed %d maps\n", style_maps); |
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275 | } |
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276 | |
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