2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 // common.c -- misc functions used in client and server
24 #define NUM_SAFE_ARGVS 7
26 static char *largv[MAX_NUM_ARGVS + NUM_SAFE_ARGVS + 1];
27 static char *argvdummy = " ";
29 static char *safeargvs[NUM_SAFE_ARGVS] =
30 {"-stdvid", "-nolan", "-nosound", "-nocdaudio", "-nojoy", "-nomouse", "-dibonly"};
32 cvar_t registered = {"registered","0"};
33 cvar_t cmdline = {"cmdline","0", false, true};
35 qboolean com_modified; // set true if using non-id files
39 int static_registered = 1; // only for startup check, then set
41 qboolean msg_suppress_1 = 0;
43 void COM_InitFilesystem (void);
45 // if a packfile directory differs from this, it is assumed to be hacked
46 #define PAK0_COUNT 339
47 #define PAK0_CRC 32981
53 #define CMDLINE_LENGTH 256
54 char com_cmdline[CMDLINE_LENGTH];
56 qboolean standard_quake = true, rogue = false, hipnotic = false, nehahra = false;
58 // this graphic needs to be in the pak file to use registered features
59 unsigned short pop[] =
61 0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000
62 ,0x0000,0x0000,0x6600,0x0000,0x0000,0x0000,0x6600,0x0000
63 ,0x0000,0x0066,0x0000,0x0000,0x0000,0x0000,0x0067,0x0000
64 ,0x0000,0x6665,0x0000,0x0000,0x0000,0x0000,0x0065,0x6600
65 ,0x0063,0x6561,0x0000,0x0000,0x0000,0x0000,0x0061,0x6563
66 ,0x0064,0x6561,0x0000,0x0000,0x0000,0x0000,0x0061,0x6564
67 ,0x0064,0x6564,0x0000,0x6469,0x6969,0x6400,0x0064,0x6564
68 ,0x0063,0x6568,0x6200,0x0064,0x6864,0x0000,0x6268,0x6563
69 ,0x0000,0x6567,0x6963,0x0064,0x6764,0x0063,0x6967,0x6500
70 ,0x0000,0x6266,0x6769,0x6a68,0x6768,0x6a69,0x6766,0x6200
71 ,0x0000,0x0062,0x6566,0x6666,0x6666,0x6666,0x6562,0x0000
72 ,0x0000,0x0000,0x0062,0x6364,0x6664,0x6362,0x0000,0x0000
73 ,0x0000,0x0000,0x0000,0x0062,0x6662,0x0000,0x0000,0x0000
74 ,0x0000,0x0000,0x0000,0x0061,0x6661,0x0000,0x0000,0x0000
75 ,0x0000,0x0000,0x0000,0x0000,0x6500,0x0000,0x0000,0x0000
76 ,0x0000,0x0000,0x0000,0x0000,0x6400,0x0000,0x0000,0x0000
82 All of Quake's data access is through a hierchal file system, but the contents of the file system can be transparently merged from several sources.
84 The "base directory" is the path to the directory holding the quake.exe and all game directories. The sys_* files pass this to host_init in quakeparms_t->basedir. This can be overridden with the "-basedir" command line parm to allow code debugging in a different directory. The base directory is
85 only used during filesystem initialization.
87 The "game directory" is the first tree on the search path and directory that all generated files (savegames, screenshots, demos, config files) will be saved to. This can be overridden with the "-game" command line parameter. The game directory can never be changed while quake is executing. This is a precacution against having a malicious server instruct clients to write files over areas they shouldn't.
89 The "cache directory" is only used during development to save network bandwidth, especially over ISDN / T1 lines. If there is a cache directory
90 specified, when a file is found by the normal search path, it will be mirrored
91 into the cache directory, then opened there.
96 The file "parms.txt" will be read out of the game directory and appended to the current command line arguments to allow different games to initialize startup parms differently. This could be used to add a "-sspeed 22050" for the high quality sound edition. Because they are added at the end, they will not override an explicit setting on the original command line.
100 //============================================================================
103 // ClearLink is used for new headnodes
104 void ClearLink (link_t *l)
106 l->prev = l->next = l;
109 void RemoveLink (link_t *l)
111 l->next->prev = l->prev;
112 l->prev->next = l->next;
115 void InsertLinkBefore (link_t *l, link_t *before)
118 l->prev = before->prev;
122 void InsertLinkAfter (link_t *l, link_t *after)
124 l->next = after->next;
131 ============================================================================
133 LIBRARY REPLACEMENT FUNCTIONS
135 ============================================================================
139 void Q_memset (void *dest, int fill, int count)
143 if ( (((long)dest | count) & 3) == 0)
146 fill = fill | (fill<<8) | (fill<<16) | (fill<<24);
147 for (i=0 ; i<count ; i++)
148 ((int *)dest)[i] = fill;
151 for (i=0 ; i<count ; i++)
152 ((byte *)dest)[i] = fill;
155 void Q_memcpy (void *dest, void *src, int count)
159 if (( ( (long)dest | (long)src | count) & 3) == 0 )
162 for (i=0 ; i<count ; i++)
163 ((int *)dest)[i] = ((int *)src)[i];
166 for (i=0 ; i<count ; i++)
167 ((byte *)dest)[i] = ((byte *)src)[i];
170 int Q_memcmp (void *m1, void *m2, int count)
175 if (((byte *)m1)[count] != ((byte *)m2)[count])
181 void Q_strcpy (char *dest, char *src)
190 void Q_strncpy (char *dest, char *src, int count)
192 while (*src && count--)
200 int Q_strlen (char *str)
211 char *Q_strrchr(char *s, char c)
213 int len = Q_strlen(s);
216 if (*--s == c) return s;
220 void Q_strcat (char *dest, char *src)
222 dest += Q_strlen(dest);
223 Q_strcpy (dest, src);
226 int Q_strcmp (char *s1, char *s2)
231 return -1; // strings not equal
233 return 0; // strings are equal
241 int Q_strncmp (char *s1, char *s2, int count)
248 return -1; // strings not equal
250 return 0; // strings are equal
258 int Q_strncasecmp (char *s1, char *s2, int n)
268 return 0; // strings are equal until end point
272 if (c1 >= 'a' && c1 <= 'z')
274 if (c2 >= 'a' && c2 <= 'z')
277 return -1; // strings not equal
280 return 0; // strings are equal
288 int Q_strcasecmp (char *s1, char *s2)
290 return Q_strncasecmp (s1, s2, 99999);
293 int Q_atoi (char *str)
312 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
318 if (c >= '0' && c <= '9')
319 val = (val<<4) + c - '0';
320 else if (c >= 'a' && c <= 'f')
321 val = (val<<4) + c - 'a' + 10;
322 else if (c >= 'A' && c <= 'F')
323 val = (val<<4) + c - 'A' + 10;
330 // check for character
334 return sign * str[1];
343 if (c <'0' || c > '9')
345 val = val*10 + c - '0';
352 float Q_atof (char *str)
372 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
378 if (c >= '0' && c <= '9')
379 val = (val*16) + c - '0';
380 else if (c >= 'a' && c <= 'f')
381 val = (val*16) + c - 'a' + 10;
382 else if (c >= 'A' && c <= 'F')
383 val = (val*16) + c - 'A' + 10;
390 // check for character
394 return sign * str[1];
410 if (c <'0' || c > '9')
412 val = val*10 + c - '0';
418 while (total > decimal)
429 ============================================================================
433 ============================================================================
437 short (*BigShort) (short l);
438 short (*LittleShort) (short l);
439 int (*BigLong) (int l);
440 int (*LittleLong) (int l);
441 float (*BigFloat) (float l);
442 float (*LittleFloat) (float l);
445 short ShortSwap (short l)
455 short ShortNoSwap (short l)
469 return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
472 int LongNoSwap (int l)
477 float FloatSwap (float f)
487 dat2.b[0] = dat1.b[3];
488 dat2.b[1] = dat1.b[2];
489 dat2.b[2] = dat1.b[1];
490 dat2.b[3] = dat1.b[0];
494 float FloatNoSwap (float f)
500 ==============================================================================
504 Handles byte ordering and avoids alignment errors
505 ==============================================================================
512 void MSG_WriteChar (sizebuf_t *sb, int c)
517 // if (c < -128 || c > 127)
518 // Sys_Error ("MSG_WriteChar: range error");
521 buf = SZ_GetSpace (sb, 1);
525 void MSG_WriteByte (sizebuf_t *sb, int c)
530 // if (c < 0 || c > 255)
531 // Sys_Error ("MSG_WriteByte: range error");
534 buf = SZ_GetSpace (sb, 1);
538 void MSG_WriteShort (sizebuf_t *sb, int c)
543 // if (c < ((short)0x8000) || c > (short)0x7fff)
544 // Sys_Error ("MSG_WriteShort: range error");
547 buf = SZ_GetSpace (sb, 2);
552 void MSG_WriteLong (sizebuf_t *sb, int c)
556 buf = SZ_GetSpace (sb, 4);
558 buf[1] = (c>>8)&0xff;
559 buf[2] = (c>>16)&0xff;
563 void MSG_WriteFloat (sizebuf_t *sb, float f)
573 dat.l = LittleLong (dat.l);
575 SZ_Write (sb, &dat.l, 4);
578 void MSG_WriteString (sizebuf_t *sb, char *s)
581 SZ_Write (sb, "", 1);
583 SZ_Write (sb, s, strlen(s)+1);
586 void MSG_WriteCoord (sizebuf_t *sb, float f)
588 MSG_WriteShort (sb, (int)(f*8));
591 void MSG_WriteAngle (sizebuf_t *sb, float f)
593 MSG_WriteByte (sb, ((int)f*256/360) & 255);
600 qboolean msg_badread;
602 void MSG_BeginReading (void)
609 // returns -1 and sets msg_badread if no more characters are available
610 int MSG_ReadChar (void)
614 // LordHavoc: minor optimization
615 if (msg_readcount >= net_message.cursize)
616 // if (msg_readcount+1 > net_message.cursize)
622 c = (signed char)net_message.data[msg_readcount];
628 int MSG_ReadByte (void)
632 // LordHavoc: minor optimization
633 if (msg_readcount >= net_message.cursize)
634 // if (msg_readcount+1 > net_message.cursize)
640 c = (unsigned char)net_message.data[msg_readcount];
647 int MSG_ReadShort (void)
651 if (msg_readcount+2 > net_message.cursize)
657 c = (short)(net_message.data[msg_readcount]
658 + (net_message.data[msg_readcount+1]<<8));
665 int MSG_ReadLong (void)
669 if (msg_readcount+4 > net_message.cursize)
675 c = net_message.data[msg_readcount]
676 + (net_message.data[msg_readcount+1]<<8)
677 + (net_message.data[msg_readcount+2]<<16)
678 + (net_message.data[msg_readcount+3]<<24);
685 float MSG_ReadFloat (void)
694 dat.b[0] = net_message.data[msg_readcount];
695 dat.b[1] = net_message.data[msg_readcount+1];
696 dat.b[2] = net_message.data[msg_readcount+2];
697 dat.b[3] = net_message.data[msg_readcount+3];
700 dat.l = LittleLong (dat.l);
705 char *MSG_ReadString (void)
707 static char string[2048];
714 if (c == -1 || c == 0)
718 } while (l < sizeof(string)-1);
726 float MSG_ReadCoord (void)
728 return MSG_ReadShort() * (1.0f/8.0f);
731 float MSG_ReadAngle (void)
733 return MSG_ReadChar() * (360.0f/256.0f);
739 //===========================================================================
741 void SZ_Alloc (sizebuf_t *buf, int startsize)
745 buf->data = Hunk_AllocName (startsize, "sizebuf");
746 buf->maxsize = startsize;
751 void SZ_Free (sizebuf_t *buf)
753 // Z_Free (buf->data);
759 void SZ_Clear (sizebuf_t *buf)
764 void *SZ_GetSpace (sizebuf_t *buf, int length)
768 if (buf->cursize + length > buf->maxsize)
770 if (!buf->allowoverflow)
771 Host_Error ("SZ_GetSpace: overflow without allowoverflow set - use -zone on the commandline for more zone memory, default: 512k (quake original default was 48k)");
773 if (length > buf->maxsize)
774 Host_Error ("SZ_GetSpace: %i is > full buffer size", length);
776 buf->overflowed = true;
777 Con_Printf ("SZ_GetSpace: overflow");
781 data = buf->data + buf->cursize;
782 buf->cursize += length;
787 void SZ_Write (sizebuf_t *buf, void *data, int length)
789 memcpy (SZ_GetSpace(buf,length),data,length);
792 void SZ_Print (sizebuf_t *buf, char *data)
796 len = strlen(data)+1;
798 // byte * cast to keep VC++ happy
799 if (buf->data[buf->cursize-1])
800 memcpy ((byte *)SZ_GetSpace(buf, len),data,len); // no trailing 0
802 memcpy ((byte *)SZ_GetSpace(buf, len-1)-1,data,len); // write over trailing 0
806 //============================================================================
814 char *COM_SkipPath (char *pathname)
833 void COM_StripExtension (char *in, char *out)
835 while (*in && *in != '.')
845 char *COM_FileExtension (char *in)
847 static char exten[8];
850 while (*in && *in != '.')
855 for (i=0 ; i<7 && *in ; i++,in++)
866 void COM_FileBase (char *in, char *out)
870 s = in + strlen(in) - 1;
872 while (s != in && *s != '.')
875 for (s2 = s ; *s2 && *s2 != '/' ; s2--)
879 strcpy (out,"?model?");
883 strncpy (out,s2+1, s-s2);
894 void COM_DefaultExtension (char *path, char *extension)
898 // if path doesn't have a .EXT, append extension
899 // (extension should include the .)
901 src = path + strlen(path) - 1;
903 while (*src != '/' && src != path)
906 return; // it has an extension
910 strcat (path, extension);
918 Parse a token out of a string
921 char *COM_Parse (char *data)
934 while ( (c = *data) <= ' ')
937 return NULL; // end of file;
942 if (c=='/' && data[1] == '/')
944 while (*data && *data != '\n')
950 // handle quoted strings specially
967 // parse single characters
968 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
976 // parse a regular word
983 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
996 Returns the position (1 to argc-1) in the program's argument list
997 where the given parameter apears, or 0 if not present
1000 int COM_CheckParm (char *parm)
1004 for (i=1 ; i<com_argc ; i++)
1007 continue; // NEXTSTEP sometimes clears appkit vars.
1008 if (!strcmp (parm,com_argv[i]))
1019 Looks for the pop.txt file and verifies it.
1020 Sets the "registered" cvar.
1021 Immediately exits out if an alternate game was attempted to be started without
1025 void COM_CheckRegistered (void)
1028 unsigned short check[128];
1031 Cvar_Set ("cmdline", com_cmdline);
1033 COM_OpenFile("gfx/pop.lmp", &h, false);
1034 static_registered = 0;
1039 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
1041 Con_Printf ("Playing shareware version.\n");
1043 // Sys_Error ("This dedicated server requires a full registered copy of Quake");
1045 // Con_Printf ("Playing shareware version.\n");
1046 // if (com_modified)
1047 // Sys_Error ("You must have the registered version to use modified games");
1051 Sys_FileRead (h, check, sizeof(check));
1054 for (i=0 ; i<128 ; i++)
1055 if (pop[i] != (unsigned short)BigShort (check[i]))
1056 Sys_Error ("Corrupted data file.");
1058 // Cvar_Set ("cmdline", com_cmdline);
1059 Cvar_Set ("registered", "1");
1060 static_registered = 1;
1061 Con_Printf ("Playing registered version.\n");
1065 void COM_Path_f (void);
1073 void COM_InitArgv (int argc, char **argv)
1078 // reconstitute the command line for the cmdline externally visible cvar
1081 for (j=0 ; (j<MAX_NUM_ARGVS) && (j< argc) ; j++)
1085 while ((n < (CMDLINE_LENGTH - 1)) && argv[j][i])
1087 com_cmdline[n++] = argv[j][i++];
1090 if (n < (CMDLINE_LENGTH - 1))
1091 com_cmdline[n++] = ' ';
1100 for (com_argc=0 ; (com_argc<MAX_NUM_ARGVS) && (com_argc < argc) ;
1103 largv[com_argc] = argv[com_argc];
1104 if (!strcmp ("-safe", argv[com_argc]))
1110 // force all the safe-mode switches. Note that we reserved extra space in
1111 // case we need to add these, so we don't need an overflow check
1112 for (i=0 ; i<NUM_SAFE_ARGVS ; i++)
1114 largv[com_argc] = safeargvs[i];
1119 largv[com_argc] = argvdummy;
1124 standard_quake = false;
1126 if (COM_CheckParm ("-rogue"))
1129 standard_quake = false;
1132 if (COM_CheckParm ("-hipnotic"))
1135 standard_quake = false;
1138 if (COM_CheckParm ("-nehahra"))
1141 standard_quake = false;
1152 void COM_Init (char *basedir)
1155 byte swaptest[2] = {1,0};
1157 // set the byte swapping variables in a portable manner
1158 if ( *(short *)swaptest == 1)
1160 BigShort = ShortSwap;
1161 LittleShort = ShortNoSwap;
1163 LittleLong = LongNoSwap;
1164 BigFloat = FloatSwap;
1165 LittleFloat = FloatNoSwap;
1169 BigShort = ShortNoSwap;
1170 LittleShort = ShortSwap;
1171 BigLong = LongNoSwap;
1172 LittleLong = LongSwap;
1173 BigFloat = FloatNoSwap;
1174 LittleFloat = FloatSwap;
1178 Cvar_RegisterVariable (®istered);
1179 Cvar_RegisterVariable (&cmdline);
1180 Cmd_AddCommand ("path", COM_Path_f);
1182 COM_InitFilesystem ();
1183 COM_CheckRegistered ();
1191 does a varargs printf into a temp buffer, so I don't need to have
1192 varargs versions of all text functions.
1193 FIXME: make this buffer size safe someday
1196 char *va(char *format, ...)
1199 static char string[1024];
1201 va_start (argptr, format);
1202 vsprintf (string, format,argptr);
1209 /// just for debugging
1210 int memsearch (byte *start, int count, int search)
1214 for (i=0 ; i<count ; i++)
1215 if (start[i] == search)
1221 =============================================================================
1225 =============================================================================
1237 char name[MAX_QPATH];
1238 int filepos, filelen;
1241 typedef struct pack_s
1243 char filename[MAX_OSPATH];
1255 int filepos, filelen;
1265 // LordHavoc: was 2048, increased to 16384 and changed info[MAX_PACK_FILES] to a temporary malloc to avoid stack overflows
1266 #define MAX_FILES_IN_PACK 16384
1268 char com_cachedir[MAX_OSPATH];
1269 char com_gamedir[MAX_OSPATH];
1271 typedef struct searchpath_s
1273 char filename[MAX_OSPATH];
1274 pack_t *pack; // only one of filename / pack will be used
1275 struct searchpath_s *next;
1278 searchpath_t *com_searchpaths;
1286 void COM_Path_f (void)
1290 Con_Printf ("Current search path:\n");
1291 for (s=com_searchpaths ; s ; s=s->next)
1295 Con_Printf ("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
1298 Con_Printf ("%s\n", s->filename);
1306 The filename will be prefixed by the current game directory
1309 void COM_WriteFile (char *filename, void *data, int len)
1312 char name[MAX_OSPATH];
1314 sprintf (name, "%s/%s", com_gamedir, filename);
1316 handle = Sys_FileOpenWrite (name);
1319 Sys_Printf ("COM_WriteFile: failed on %s\n", name);
1323 Sys_Printf ("COM_WriteFile: %s\n", name);
1324 Sys_FileWrite (handle, data, len);
1325 Sys_FileClose (handle);
1333 Only used for CopyFile
1336 void COM_CreatePath (char *path)
1340 for (ofs = path+1 ; *ofs ; ofs++)
1343 { // create the directory
1356 Copies a file over from the net to the local cache, creating any directories
1357 needed. This is for the convenience of developers using ISDN from home.
1360 void COM_CopyFile (char *netpath, char *cachepath)
1363 int remaining, count;
1366 remaining = Sys_FileOpenRead (netpath, &in);
1367 COM_CreatePath (cachepath); // create directories up to the cache file
1368 out = Sys_FileOpenWrite (cachepath);
1372 if (remaining < sizeof(buf))
1375 count = sizeof(buf);
1376 Sys_FileRead (in, buf, count);
1377 Sys_FileWrite (out, buf, count);
1382 Sys_FileClose (out);
1389 Finds the file in the search path.
1390 Sets com_filesize and one of handle or file
1393 int COM_FindFile (char *filename, int *handle, FILE **file, qboolean quiet)
1395 searchpath_t *search;
1396 char netpath[MAX_OSPATH];
1397 char cachepath[MAX_OSPATH];
1400 int findtime, cachetime;
1403 Sys_Error ("COM_FindFile: both handle and file set");
1404 if (!file && !handle)
1405 Sys_Error ("COM_FindFile: neither handle or file set");
1408 // search through the path, one element at a time
1410 search = com_searchpaths;
1412 { // gross hack to use quake 1 progs with quake 2 maps
1413 if (!strcmp(filename, "progs.dat"))
1414 search = search->next;
1417 for ( ; search ; search = search->next)
1419 // is the element a pak file?
1422 // look through all the pak file elements
1424 for (i=0 ; i<pak->numfiles ; i++)
1425 if (!strcmp (pak->files[i].name, filename))
1428 Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
1431 *handle = pak->handle;
1432 Sys_FileSeek (pak->handle, pak->files[i].filepos);
1435 { // open a new file on the pakfile
1436 *file = fopen (pak->filename, "rb");
1438 fseek (*file, pak->files[i].filepos, SEEK_SET);
1440 com_filesize = pak->files[i].filelen;
1441 return com_filesize;
1446 // check a file in the directory tree
1447 // if (!static_registered)
1448 // { // if not a registered version, don't ever go beyond base
1449 // if ( strchr (filename, '/') || strchr (filename,'\\'))
1453 sprintf (netpath, "%s/%s",search->filename, filename);
1455 findtime = Sys_FileTime (netpath);
1459 // see if the file needs to be updated in the cache
1460 if (!com_cachedir[0])
1461 strcpy (cachepath, netpath);
1465 if ((strlen(netpath) < 2) || (netpath[1] != ':'))
1466 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1468 sprintf (cachepath,"%s%s", com_cachedir, netpath+2);
1470 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1473 cachetime = Sys_FileTime (cachepath);
1475 if (cachetime < findtime)
1476 COM_CopyFile (netpath, cachepath);
1477 strcpy (netpath, cachepath);
1481 Sys_Printf ("FindFile: %s\n",netpath);
1482 com_filesize = Sys_FileOpenRead (netpath, &i);
1488 *file = fopen (netpath, "rb");
1490 return com_filesize;
1496 Sys_Printf ("FindFile: can't find %s\n", filename);
1511 filename never has a leading slash, but may contain directory walks
1512 returns a handle and a length
1513 it may actually be inside a pak file
1516 int COM_OpenFile (char *filename, int *handle, qboolean quiet)
1518 return COM_FindFile (filename, handle, NULL, quiet);
1525 If the requested file is inside a packfile, a new FILE * will be opened
1529 int COM_FOpenFile (char *filename, FILE **file, qboolean quiet)
1531 return COM_FindFile (filename, NULL, file, quiet);
1538 If it is a pak file handle, don't really close it
1541 void COM_CloseFile (int h)
1545 for (s = com_searchpaths ; s ; s=s->next)
1546 if (s->pack && s->pack->handle == h)
1557 Filename are reletive to the quake directory.
1558 Allways appends a 0 byte.
1561 cache_user_t *loadcache;
1564 byte *COM_LoadFile (char *path, int usehunk, qboolean quiet)
1571 buf = NULL; // quiet compiler warning
1573 // look for it in the filesystem or pack files
1574 len = COM_OpenFile (path, &h, quiet);
1578 // extract the filename base name for hunk tag
1579 COM_FileBase (path, base);
1582 buf = Hunk_AllocName (len+1, base);
1583 else if (usehunk == 2)
1584 buf = Hunk_TempAlloc (len+1);
1585 else if (usehunk == 0)
1586 buf = Z_Malloc (len+1);
1587 else if (usehunk == 3)
1588 buf = Cache_Alloc (loadcache, len+1, base);
1589 else if (usehunk == 4)
1591 if (len+1 > loadsize)
1592 buf = Hunk_TempAlloc (len+1);
1596 else if (usehunk == 5)
1597 buf = malloc (len+1);
1599 Sys_Error ("COM_LoadFile: bad usehunk");
1602 Sys_Error ("COM_LoadFile: not enough space for %s", path);
1604 ((byte *)buf)[len] = 0;
1606 Sys_FileRead (h, buf, len);
1612 byte *COM_LoadHunkFile (char *path, qboolean quiet)
1614 return COM_LoadFile (path, 1, quiet);
1617 byte *COM_LoadTempFile (char *path, qboolean quiet)
1619 return COM_LoadFile (path, 2, quiet);
1622 // LordHavoc: returns malloc'd memory
1623 byte *COM_LoadMallocFile (char *path, qboolean quiet)
1625 return COM_LoadFile (path, 5, quiet);
1628 void COM_LoadCacheFile (char *path, struct cache_user_s *cu, qboolean quiet)
1631 COM_LoadFile (path, 3, quiet);
1634 // uses temp hunk if larger than bufsize
1635 byte *COM_LoadStackFile (char *path, void *buffer, int bufsize, qboolean quiet)
1639 loadbuf = (byte *)buffer;
1641 buf = COM_LoadFile (path, 4, quiet);
1650 Takes an explicit (not game tree related) path to a pak file.
1652 Loads the header and directory, adding the files at the beginning
1653 of the list so they override previous pack files.
1656 pack_t *COM_LoadPackFile (char *packfile)
1658 dpackheader_t header;
1660 packfile_t *newfiles;
1664 // LordHavoc: changed from stack array to temporary malloc, allowing huge pack directories
1668 if (Sys_FileOpenRead (packfile, &packhandle) == -1)
1670 // Con_Printf ("Couldn't open %s\n", packfile);
1673 Sys_FileRead (packhandle, (void *)&header, sizeof(header));
1674 if (header.id[0] != 'P' || header.id[1] != 'A'
1675 || header.id[2] != 'C' || header.id[3] != 'K')
1676 Sys_Error ("%s is not a packfile", packfile);
1677 header.dirofs = LittleLong (header.dirofs);
1678 header.dirlen = LittleLong (header.dirlen);
1680 numpackfiles = header.dirlen / sizeof(dpackfile_t);
1682 if (numpackfiles > MAX_FILES_IN_PACK)
1683 Sys_Error ("%s has %i files", packfile, numpackfiles);
1685 if (numpackfiles != PAK0_COUNT)
1686 com_modified = true; // not the original file
1688 newfiles = Hunk_AllocName (numpackfiles * sizeof(packfile_t), "packfile");
1690 info = malloc(sizeof(*info)*MAX_FILES_IN_PACK);
1691 Sys_FileSeek (packhandle, header.dirofs);
1692 Sys_FileRead (packhandle, (void *)info, header.dirlen);
1694 // crc the directory to check for modifications
1696 // LordHavoc: speedup
1697 CRC_ProcessBytes(&crc, (byte *)info, header.dirlen);
1698 // for (i=0 ; i<header.dirlen ; i++)
1699 // CRC_ProcessByte (&crc, ((byte *)info)[i]);
1700 if (crc != PAK0_CRC)
1701 com_modified = true;
1703 // parse the directory
1704 for (i=0 ; i<numpackfiles ; i++)
1706 strcpy (newfiles[i].name, info[i].name);
1707 newfiles[i].filepos = LittleLong(info[i].filepos);
1708 newfiles[i].filelen = LittleLong(info[i].filelen);
1712 pack = Hunk_Alloc (sizeof (pack_t));
1713 strcpy (pack->filename, packfile);
1714 pack->handle = packhandle;
1715 pack->numfiles = numpackfiles;
1716 pack->files = newfiles;
1718 Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
1725 COM_AddGameDirectory
1727 Sets com_gamedir, adds the directory to the head of the path,
1728 then loads and adds pak1.pak pak2.pak ...
1731 void COM_AddGameDirectory (char *dir)
1734 searchpath_t *search;
1736 char pakfile[MAX_OSPATH];
1738 strcpy (com_gamedir, dir);
1741 // add the directory to the search path
1743 search = Hunk_Alloc (sizeof(searchpath_t));
1744 strcpy (search->filename, dir);
1745 search->next = com_searchpaths;
1746 com_searchpaths = search;
1749 // add any pak files in the format pak0.pak pak1.pak, ...
1753 sprintf (pakfile, "%s/pak%i.pak", dir, i);
1754 pak = COM_LoadPackFile (pakfile);
1757 search = Hunk_Alloc (sizeof(searchpath_t));
1759 search->next = com_searchpaths;
1760 com_searchpaths = search;
1764 // add the contents of the parms.txt file to the end of the command line
1774 void COM_InitFilesystem (void)
1777 char basedir[MAX_OSPATH];
1778 searchpath_t *search;
1782 // Overrides the system supplied base directory (under GAMENAME)
1784 i = COM_CheckParm ("-basedir");
1785 if (i && i < com_argc-1)
1786 strcpy (basedir, com_argv[i+1]);
1788 strcpy (basedir, host_parms.basedir);
1790 j = strlen (basedir);
1794 if ((basedir[j-1] == '\\') || (basedir[j-1] == '/'))
1800 // Overrides the system supplied cache directory (NULL or /qcache)
1801 // -cachedir - will disable caching.
1803 i = COM_CheckParm ("-cachedir");
1804 if (i && i < com_argc-1)
1806 if (com_argv[i+1][0] == '-')
1807 com_cachedir[0] = 0;
1809 strcpy (com_cachedir, com_argv[i+1]);
1811 else if (host_parms.cachedir)
1812 strcpy (com_cachedir, host_parms.cachedir);
1814 com_cachedir[0] = 0;
1817 // start up with GAMENAME by default (id1)
1819 COM_AddGameDirectory (va("%s/"GAMENAME, basedir) );
1822 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1824 if (COM_CheckParm ("-rogue"))
1825 COM_AddGameDirectory (va("%s/rogue", basedir) );
1826 if (COM_CheckParm ("-hipnotic"))
1827 COM_AddGameDirectory (va("%s/hipnotic", basedir) );
1828 if (COM_CheckParm ("-nehahra"))
1829 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1834 // Adds basedir/gamedir as an override game
1836 i = COM_CheckParm ("-game");
1837 if (i && i < com_argc-1)
1839 com_modified = true;
1840 COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
1844 // -path <dir or packfile> [<dir or packfile>] ...
1845 // Fully specifies the exact serach path, overriding the generated one
1847 i = COM_CheckParm ("-path");
1850 com_modified = true;
1851 com_searchpaths = NULL;
1852 while (++i < com_argc)
1854 if (!com_argv[i] || com_argv[i][0] == '+' || com_argv[i][0] == '-')
1857 search = Hunk_Alloc (sizeof(searchpath_t));
1858 if ( !strcmp(COM_FileExtension(com_argv[i]), "pak") )
1860 search->pack = COM_LoadPackFile (com_argv[i]);
1862 Sys_Error ("Couldn't load packfile: %s", com_argv[i]);
1865 strcpy (search->filename, com_argv[i]);
1866 search->next = com_searchpaths;
1867 com_searchpaths = search;
1871 if (COM_CheckParm ("-proghack"))
1875 int COM_FileExists(char *filename)
1877 searchpath_t *search;
1878 char netpath[MAX_OSPATH];
1883 for (search = com_searchpaths;search;search = search->next)
1888 for (i = 0;i < pak->numfiles;i++)
1889 if (!strcmp (pak->files[i].name, filename))
1894 sprintf (netpath, "%s/%s",search->filename, filename);
1895 findtime = Sys_FileTime (netpath);