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)
589 MSG_WriteFloat(sb, f);
591 MSG_WriteShort (sb, (int)(f*8.0f + 0.5f));
594 void MSG_WritePreciseAngle (sizebuf_t *sb, float f)
596 MSG_WriteShort (sb, (int)(f*(65536.0f/360.0f) + 0.5f) & 65535);
599 // LordHavoc: round to nearest value, rather than rounding down, fixes crosshair problem
600 void MSG_WriteAngle (sizebuf_t *sb, float f)
602 MSG_WriteByte (sb, (int)(f*(256.0f/360.0f) + 0.5f) & 255);
609 qboolean msg_badread;
611 void MSG_BeginReading (void)
618 // returns -1 and sets msg_badread if no more characters are available
619 int MSG_ReadChar (void)
623 // LordHavoc: minor optimization
624 if (msg_readcount >= net_message.cursize)
625 // if (msg_readcount+1 > net_message.cursize)
631 c = (signed char)net_message.data[msg_readcount];
637 int MSG_ReadByte (void)
641 // LordHavoc: minor optimization
642 if (msg_readcount >= net_message.cursize)
643 // if (msg_readcount+1 > net_message.cursize)
649 c = (unsigned char)net_message.data[msg_readcount];
656 int MSG_ReadShort (void)
660 if (msg_readcount+2 > net_message.cursize)
666 c = (short)(net_message.data[msg_readcount]
667 + (net_message.data[msg_readcount+1]<<8));
674 int MSG_ReadLong (void)
678 if (msg_readcount+4 > net_message.cursize)
684 c = net_message.data[msg_readcount]
685 + (net_message.data[msg_readcount+1]<<8)
686 + (net_message.data[msg_readcount+2]<<16)
687 + (net_message.data[msg_readcount+3]<<24);
694 float MSG_ReadFloat (void)
703 dat.b[0] = net_message.data[msg_readcount];
704 dat.b[1] = net_message.data[msg_readcount+1];
705 dat.b[2] = net_message.data[msg_readcount+2];
706 dat.b[3] = net_message.data[msg_readcount+3];
709 dat.l = LittleLong (dat.l);
714 char *MSG_ReadString (void)
716 static char string[2048];
723 if (c == -1 || c == 0)
727 } while (l < sizeof(string)-1);
734 float MSG_ReadCoord (void)
737 return MSG_ReadFloat();
739 return MSG_ReadShort() * (1.0f/8.0f);
743 float MSG_ReadCoord (void)
745 return MSG_ReadShort() * (1.0f/8.0f);
748 float MSG_ReadAngle (void)
750 return MSG_ReadChar() * (360.0f/256.0f);
753 float MSG_ReadPreciseAngle (void)
755 return MSG_ReadShort() * (360.0f/65536);
760 //===========================================================================
762 void SZ_Alloc (sizebuf_t *buf, int startsize)
766 buf->data = Hunk_AllocName (startsize, "sizebuf");
767 buf->maxsize = startsize;
772 void SZ_Free (sizebuf_t *buf)
774 // Z_Free (buf->data);
780 void SZ_Clear (sizebuf_t *buf)
785 void *SZ_GetSpace (sizebuf_t *buf, int length)
789 if (buf->cursize + length > buf->maxsize)
791 if (!buf->allowoverflow)
792 Host_Error ("SZ_GetSpace: overflow without allowoverflow set - use -zone on the commandline for more zone memory, default: 512k (quake original default was 48k)");
794 if (length > buf->maxsize)
795 Host_Error ("SZ_GetSpace: %i is > full buffer size", length);
797 buf->overflowed = true;
798 Con_Printf ("SZ_GetSpace: overflow");
802 data = buf->data + buf->cursize;
803 buf->cursize += length;
808 void SZ_Write (sizebuf_t *buf, void *data, int length)
810 memcpy (SZ_GetSpace(buf,length),data,length);
813 void SZ_Print (sizebuf_t *buf, char *data)
817 len = strlen(data)+1;
819 // byte * cast to keep VC++ happy
820 if (buf->data[buf->cursize-1])
821 memcpy ((byte *)SZ_GetSpace(buf, len),data,len); // no trailing 0
823 memcpy ((byte *)SZ_GetSpace(buf, len-1)-1,data,len); // write over trailing 0
827 //============================================================================
835 char *COM_SkipPath (char *pathname)
854 void COM_StripExtension (char *in, char *out)
856 while (*in && *in != '.')
866 char *COM_FileExtension (char *in)
868 static char exten[8];
871 while (*in && *in != '.')
876 for (i=0 ; i<7 && *in ; i++,in++)
887 void COM_FileBase (char *in, char *out)
891 s = in + strlen(in) - 1;
893 while (s != in && *s != '.')
896 // LordHavoc: EWW bug bug bug bug bug... added previously missing s2 != in (yes, could go hunting through mem for /)
897 for (s2 = s ; s2 != in && *s2 && *s2 != '/' ; s2--)
901 strcpy (out,"?model?");
904 // LordHavoc: FIXME: examine this
906 strncpy (out,s2+1, s-s2);
917 void COM_DefaultExtension (char *path, char *extension)
921 // if path doesn't have a .EXT, append extension
922 // (extension should include the .)
924 src = path + strlen(path) - 1;
926 while (*src != '/' && src != path)
929 return; // it has an extension
933 strcat (path, extension);
941 Parse a token out of a string
944 char *COM_Parse (char *data)
957 while ( (c = *data) <= ' ')
960 return NULL; // end of file;
965 if (c=='/' && data[1] == '/')
967 while (*data && *data != '\n')
973 // handle quoted strings specially
990 // parse single characters
991 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
999 // parse a regular word
1006 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
1019 Returns the position (1 to argc-1) in the program's argument list
1020 where the given parameter apears, or 0 if not present
1023 int COM_CheckParm (char *parm)
1027 for (i=1 ; i<com_argc ; i++)
1030 continue; // NEXTSTEP sometimes clears appkit vars.
1031 if (!strcmp (parm,com_argv[i]))
1042 Looks for the pop.txt file and verifies it.
1043 Sets the "registered" cvar.
1044 Immediately exits out if an alternate game was attempted to be started without
1048 void COM_CheckRegistered (void)
1051 unsigned short check[128];
1054 Cvar_Set ("cmdline", com_cmdline);
1056 COM_OpenFile("gfx/pop.lmp", &h, false);
1057 static_registered = 0;
1062 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
1064 Con_Printf ("Playing shareware version.\n");
1066 // Sys_Error ("This dedicated server requires a full registered copy of Quake");
1068 // Con_Printf ("Playing shareware version.\n");
1069 // if (com_modified)
1070 // Sys_Error ("You must have the registered version to use modified games");
1074 Sys_FileRead (h, check, sizeof(check));
1077 for (i=0 ; i<128 ; i++)
1078 if (pop[i] != (unsigned short)BigShort (check[i]))
1079 Sys_Error ("Corrupted data file.");
1081 // Cvar_Set ("cmdline", com_cmdline);
1082 Cvar_Set ("registered", "1");
1083 static_registered = 1;
1084 Con_Printf ("Playing registered version.\n");
1088 void COM_Path_f (void);
1096 void COM_InitArgv (int argc, char **argv)
1101 // reconstitute the command line for the cmdline externally visible cvar
1104 for (j=0 ; (j<MAX_NUM_ARGVS) && (j< argc) ; j++)
1108 while ((n < (CMDLINE_LENGTH - 1)) && argv[j][i])
1110 com_cmdline[n++] = argv[j][i++];
1113 if (n < (CMDLINE_LENGTH - 1))
1114 com_cmdline[n++] = ' ';
1123 for (com_argc=0 ; (com_argc<MAX_NUM_ARGVS) && (com_argc < argc) ;
1126 largv[com_argc] = argv[com_argc];
1127 if (!strcmp ("-safe", argv[com_argc]))
1133 // force all the safe-mode switches. Note that we reserved extra space in
1134 // case we need to add these, so we don't need an overflow check
1135 for (i=0 ; i<NUM_SAFE_ARGVS ; i++)
1137 largv[com_argc] = safeargvs[i];
1142 largv[com_argc] = argvdummy;
1147 standard_quake = false;
1149 if (COM_CheckParm ("-rogue"))
1152 standard_quake = false;
1155 if (COM_CheckParm ("-hipnotic"))
1158 standard_quake = false;
1161 if (COM_CheckParm ("-nehahra"))
1164 standard_quake = false;
1175 void COM_Init (char *basedir)
1178 byte swaptest[2] = {1,0};
1180 // set the byte swapping variables in a portable manner
1181 if ( *(short *)swaptest == 1)
1183 BigShort = ShortSwap;
1184 LittleShort = ShortNoSwap;
1186 LittleLong = LongNoSwap;
1187 BigFloat = FloatSwap;
1188 LittleFloat = FloatNoSwap;
1192 BigShort = ShortNoSwap;
1193 LittleShort = ShortSwap;
1194 BigLong = LongNoSwap;
1195 LittleLong = LongSwap;
1196 BigFloat = FloatNoSwap;
1197 LittleFloat = FloatSwap;
1201 Cvar_RegisterVariable (®istered);
1202 Cvar_RegisterVariable (&cmdline);
1203 Cmd_AddCommand ("path", COM_Path_f);
1205 COM_InitFilesystem ();
1206 COM_CheckRegistered ();
1214 does a varargs printf into a temp buffer, so I don't need to have
1215 varargs versions of all text functions.
1216 FIXME: make this buffer size safe someday
1219 char *va(char *format, ...)
1222 static char string[1024];
1224 va_start (argptr, format);
1225 vsprintf (string, format,argptr);
1232 /// just for debugging
1233 int memsearch (byte *start, int count, int search)
1237 for (i=0 ; i<count ; i++)
1238 if (start[i] == search)
1244 =============================================================================
1248 =============================================================================
1260 char name[MAX_QPATH];
1261 int filepos, filelen;
1264 typedef struct pack_s
1266 char filename[MAX_OSPATH];
1278 int filepos, filelen;
1288 // LordHavoc: was 2048, increased to 16384 and changed info[MAX_PACK_FILES] to a temporary malloc to avoid stack overflows
1289 #define MAX_FILES_IN_PACK 16384
1291 char com_cachedir[MAX_OSPATH];
1292 char com_gamedir[MAX_OSPATH];
1294 typedef struct searchpath_s
1296 char filename[MAX_OSPATH];
1297 pack_t *pack; // only one of filename / pack will be used
1298 struct searchpath_s *next;
1301 searchpath_t *com_searchpaths;
1309 void COM_Path_f (void)
1313 Con_Printf ("Current search path:\n");
1314 for (s=com_searchpaths ; s ; s=s->next)
1318 Con_Printf ("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
1321 Con_Printf ("%s\n", s->filename);
1329 The filename will be prefixed by the current game directory
1332 void COM_WriteFile (char *filename, void *data, int len)
1335 char name[MAX_OSPATH];
1337 sprintf (name, "%s/%s", com_gamedir, filename);
1339 handle = Sys_FileOpenWrite (name);
1342 Sys_Printf ("COM_WriteFile: failed on %s\n", name);
1346 Sys_Printf ("COM_WriteFile: %s\n", name);
1347 Sys_FileWrite (handle, data, len);
1348 Sys_FileClose (handle);
1356 Only used for CopyFile
1359 void COM_CreatePath (char *path)
1363 for (ofs = path+1 ; *ofs ; ofs++)
1366 { // create the directory
1379 Copies a file over from the net to the local cache, creating any directories
1380 needed. This is for the convenience of developers using ISDN from home.
1383 void COM_CopyFile (char *netpath, char *cachepath)
1386 int remaining, count;
1389 remaining = Sys_FileOpenRead (netpath, &in);
1390 COM_CreatePath (cachepath); // create directories up to the cache file
1391 out = Sys_FileOpenWrite (cachepath);
1395 if (remaining < sizeof(buf))
1398 count = sizeof(buf);
1399 Sys_FileRead (in, buf, count);
1400 Sys_FileWrite (out, buf, count);
1405 Sys_FileClose (out);
1412 Finds the file in the search path.
1413 Sets com_filesize and one of handle or file
1416 int COM_FindFile (char *filename, int *handle, FILE **file, qboolean quiet)
1418 searchpath_t *search;
1419 char netpath[MAX_OSPATH];
1420 char cachepath[MAX_OSPATH];
1423 int findtime, cachetime;
1426 Sys_Error ("COM_FindFile: both handle and file set");
1427 if (!file && !handle)
1428 Sys_Error ("COM_FindFile: neither handle or file set");
1431 // search through the path, one element at a time
1433 search = com_searchpaths;
1435 { // gross hack to use quake 1 progs with quake 2 maps
1436 if (!strcmp(filename, "progs.dat"))
1437 search = search->next;
1440 for ( ; search ; search = search->next)
1442 // is the element a pak file?
1445 // look through all the pak file elements
1447 for (i=0 ; i<pak->numfiles ; i++)
1448 if (!strcmp (pak->files[i].name, filename))
1451 Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
1454 *handle = pak->handle;
1455 Sys_FileSeek (pak->handle, pak->files[i].filepos);
1458 { // open a new file on the pakfile
1459 *file = fopen (pak->filename, "rb");
1461 fseek (*file, pak->files[i].filepos, SEEK_SET);
1463 com_filesize = pak->files[i].filelen;
1464 return com_filesize;
1469 // check a file in the directory tree
1470 // if (!static_registered)
1471 // { // if not a registered version, don't ever go beyond base
1472 // if ( strchr (filename, '/') || strchr (filename,'\\'))
1476 sprintf (netpath, "%s/%s",search->filename, filename);
1478 findtime = Sys_FileTime (netpath);
1482 // see if the file needs to be updated in the cache
1483 if (!com_cachedir[0])
1484 strcpy (cachepath, netpath);
1488 if ((strlen(netpath) < 2) || (netpath[1] != ':'))
1489 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1491 sprintf (cachepath,"%s%s", com_cachedir, netpath+2);
1493 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1496 cachetime = Sys_FileTime (cachepath);
1498 if (cachetime < findtime)
1499 COM_CopyFile (netpath, cachepath);
1500 strcpy (netpath, cachepath);
1504 Sys_Printf ("FindFile: %s\n",netpath);
1505 com_filesize = Sys_FileOpenRead (netpath, &i);
1511 *file = fopen (netpath, "rb");
1513 return com_filesize;
1519 Sys_Printf ("FindFile: can't find %s\n", filename);
1534 filename never has a leading slash, but may contain directory walks
1535 returns a handle and a length
1536 it may actually be inside a pak file
1539 int COM_OpenFile (char *filename, int *handle, qboolean quiet)
1541 return COM_FindFile (filename, handle, NULL, quiet);
1548 If the requested file is inside a packfile, a new FILE * will be opened
1552 int COM_FOpenFile (char *filename, FILE **file, qboolean quiet)
1554 return COM_FindFile (filename, NULL, file, quiet);
1561 If it is a pak file handle, don't really close it
1564 void COM_CloseFile (int h)
1568 for (s = com_searchpaths ; s ; s=s->next)
1569 if (s->pack && s->pack->handle == h)
1580 Filename are reletive to the quake directory.
1581 Allways appends a 0 byte.
1584 cache_user_t *loadcache;
1587 byte *COM_LoadFile (char *path, int usehunk, qboolean quiet)
1594 buf = NULL; // quiet compiler warning
1596 // look for it in the filesystem or pack files
1597 len = COM_OpenFile (path, &h, quiet);
1601 // extract the filename base name for hunk tag
1602 COM_FileBase (path, base);
1605 buf = Hunk_AllocName (len+1, base);
1606 else if (usehunk == 2)
1607 buf = Hunk_TempAlloc (len+1);
1608 else if (usehunk == 0)
1609 buf = Z_Malloc (len+1);
1610 else if (usehunk == 3)
1611 buf = Cache_Alloc (loadcache, len+1, base);
1612 else if (usehunk == 4)
1614 if (len+1 > loadsize)
1615 buf = Hunk_TempAlloc (len+1);
1619 else if (usehunk == 5)
1620 buf = malloc (len+1);
1622 Sys_Error ("COM_LoadFile: bad usehunk");
1625 Sys_Error ("COM_LoadFile: not enough space for %s", path);
1627 ((byte *)buf)[len] = 0;
1629 Sys_FileRead (h, buf, len);
1635 byte *COM_LoadHunkFile (char *path, qboolean quiet)
1637 return COM_LoadFile (path, 1, quiet);
1640 byte *COM_LoadTempFile (char *path, qboolean quiet)
1642 return COM_LoadFile (path, 2, quiet);
1645 // LordHavoc: returns malloc'd memory
1646 byte *COM_LoadMallocFile (char *path, qboolean quiet)
1648 return COM_LoadFile (path, 5, quiet);
1651 void COM_LoadCacheFile (char *path, struct cache_user_s *cu, qboolean quiet)
1654 COM_LoadFile (path, 3, quiet);
1657 // uses temp hunk if larger than bufsize
1658 byte *COM_LoadStackFile (char *path, void *buffer, int bufsize, qboolean quiet)
1662 loadbuf = (byte *)buffer;
1664 buf = COM_LoadFile (path, 4, quiet);
1673 Takes an explicit (not game tree related) path to a pak file.
1675 Loads the header and directory, adding the files at the beginning
1676 of the list so they override previous pack files.
1679 pack_t *COM_LoadPackFile (char *packfile)
1681 dpackheader_t header;
1683 packfile_t *newfiles;
1687 // LordHavoc: changed from stack array to temporary malloc, allowing huge pack directories
1691 if (Sys_FileOpenRead (packfile, &packhandle) == -1)
1693 // Con_Printf ("Couldn't open %s\n", packfile);
1696 Sys_FileRead (packhandle, (void *)&header, sizeof(header));
1697 if (header.id[0] != 'P' || header.id[1] != 'A'
1698 || header.id[2] != 'C' || header.id[3] != 'K')
1699 Sys_Error ("%s is not a packfile", packfile);
1700 header.dirofs = LittleLong (header.dirofs);
1701 header.dirlen = LittleLong (header.dirlen);
1703 numpackfiles = header.dirlen / sizeof(dpackfile_t);
1705 if (numpackfiles > MAX_FILES_IN_PACK)
1706 Sys_Error ("%s has %i files", packfile, numpackfiles);
1708 if (numpackfiles != PAK0_COUNT)
1709 com_modified = true; // not the original file
1711 newfiles = Hunk_AllocName (numpackfiles * sizeof(packfile_t), "packfile");
1713 info = malloc(sizeof(*info)*MAX_FILES_IN_PACK);
1714 Sys_FileSeek (packhandle, header.dirofs);
1715 Sys_FileRead (packhandle, (void *)info, header.dirlen);
1717 // crc the directory to check for modifications
1719 // LordHavoc: speedup
1720 CRC_ProcessBytes(&crc, (byte *)info, header.dirlen);
1721 // for (i=0 ; i<header.dirlen ; i++)
1722 // CRC_ProcessByte (&crc, ((byte *)info)[i]);
1723 if (crc != PAK0_CRC)
1724 com_modified = true;
1726 // parse the directory
1727 for (i=0 ; i<numpackfiles ; i++)
1729 strcpy (newfiles[i].name, info[i].name);
1730 newfiles[i].filepos = LittleLong(info[i].filepos);
1731 newfiles[i].filelen = LittleLong(info[i].filelen);
1735 pack = Hunk_Alloc (sizeof (pack_t));
1736 strcpy (pack->filename, packfile);
1737 pack->handle = packhandle;
1738 pack->numfiles = numpackfiles;
1739 pack->files = newfiles;
1741 Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
1748 COM_AddGameDirectory
1750 Sets com_gamedir, adds the directory to the head of the path,
1751 then loads and adds pak1.pak pak2.pak ...
1754 void COM_AddGameDirectory (char *dir)
1757 searchpath_t *search;
1759 char pakfile[MAX_OSPATH];
1761 strcpy (com_gamedir, dir);
1764 // add the directory to the search path
1766 search = Hunk_Alloc (sizeof(searchpath_t));
1767 strcpy (search->filename, dir);
1768 search->next = com_searchpaths;
1769 com_searchpaths = search;
1772 // add any pak files in the format pak0.pak pak1.pak, ...
1776 sprintf (pakfile, "%s/pak%i.pak", dir, i);
1777 pak = COM_LoadPackFile (pakfile);
1780 search = Hunk_Alloc (sizeof(searchpath_t));
1782 search->next = com_searchpaths;
1783 com_searchpaths = search;
1787 // add the contents of the parms.txt file to the end of the command line
1797 void COM_InitFilesystem (void)
1800 char basedir[MAX_OSPATH];
1801 searchpath_t *search;
1805 // Overrides the system supplied base directory (under GAMENAME)
1807 i = COM_CheckParm ("-basedir");
1808 if (i && i < com_argc-1)
1809 strcpy (basedir, com_argv[i+1]);
1811 strcpy (basedir, host_parms.basedir);
1813 j = strlen (basedir);
1817 if ((basedir[j-1] == '\\') || (basedir[j-1] == '/'))
1823 // Overrides the system supplied cache directory (NULL or /qcache)
1824 // -cachedir - will disable caching.
1826 i = COM_CheckParm ("-cachedir");
1827 if (i && i < com_argc-1)
1829 if (com_argv[i+1][0] == '-')
1830 com_cachedir[0] = 0;
1832 strcpy (com_cachedir, com_argv[i+1]);
1834 else if (host_parms.cachedir)
1835 strcpy (com_cachedir, host_parms.cachedir);
1837 com_cachedir[0] = 0;
1840 // start up with GAMENAME by default (id1)
1842 COM_AddGameDirectory (va("%s/"GAMENAME, basedir) );
1845 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1847 if (COM_CheckParm ("-rogue"))
1848 COM_AddGameDirectory (va("%s/rogue", basedir) );
1849 if (COM_CheckParm ("-hipnotic"))
1850 COM_AddGameDirectory (va("%s/hipnotic", basedir) );
1851 if (COM_CheckParm ("-nehahra"))
1852 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1857 // Adds basedir/gamedir as an override game
1859 i = COM_CheckParm ("-game");
1860 if (i && i < com_argc-1)
1862 com_modified = true;
1863 COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
1867 // -path <dir or packfile> [<dir or packfile>] ...
1868 // Fully specifies the exact serach path, overriding the generated one
1870 i = COM_CheckParm ("-path");
1873 com_modified = true;
1874 com_searchpaths = NULL;
1875 while (++i < com_argc)
1877 if (!com_argv[i] || com_argv[i][0] == '+' || com_argv[i][0] == '-')
1880 search = Hunk_Alloc (sizeof(searchpath_t));
1881 if ( !strcmp(COM_FileExtension(com_argv[i]), "pak") )
1883 search->pack = COM_LoadPackFile (com_argv[i]);
1885 Sys_Error ("Couldn't load packfile: %s", com_argv[i]);
1888 strcpy (search->filename, com_argv[i]);
1889 search->next = com_searchpaths;
1890 com_searchpaths = search;
1894 if (COM_CheckParm ("-proghack"))
1898 int COM_FileExists(char *filename)
1900 searchpath_t *search;
1901 char netpath[MAX_OSPATH];
1906 for (search = com_searchpaths;search;search = search->next)
1911 for (i = 0;i < pak->numfiles;i++)
1912 if (!strcmp (pak->files[i].name, filename))
1917 sprintf (netpath, "%s/%s",search->filename, filename);
1918 findtime = Sys_FileTime (netpath);