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 for (s2 = s ; *s2 && *s2 != '/' ; s2--)
900 strcpy (out,"?model?");
904 strncpy (out,s2+1, s-s2);
915 void COM_DefaultExtension (char *path, char *extension)
919 // if path doesn't have a .EXT, append extension
920 // (extension should include the .)
922 src = path + strlen(path) - 1;
924 while (*src != '/' && src != path)
927 return; // it has an extension
931 strcat (path, extension);
939 Parse a token out of a string
942 char *COM_Parse (char *data)
955 while ( (c = *data) <= ' ')
958 return NULL; // end of file;
963 if (c=='/' && data[1] == '/')
965 while (*data && *data != '\n')
971 // handle quoted strings specially
988 // parse single characters
989 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
997 // parse a regular word
1004 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
1017 Returns the position (1 to argc-1) in the program's argument list
1018 where the given parameter apears, or 0 if not present
1021 int COM_CheckParm (char *parm)
1025 for (i=1 ; i<com_argc ; i++)
1028 continue; // NEXTSTEP sometimes clears appkit vars.
1029 if (!strcmp (parm,com_argv[i]))
1040 Looks for the pop.txt file and verifies it.
1041 Sets the "registered" cvar.
1042 Immediately exits out if an alternate game was attempted to be started without
1046 void COM_CheckRegistered (void)
1049 unsigned short check[128];
1052 Cvar_Set ("cmdline", com_cmdline);
1054 COM_OpenFile("gfx/pop.lmp", &h, false);
1055 static_registered = 0;
1060 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
1062 Con_Printf ("Playing shareware version.\n");
1064 // Sys_Error ("This dedicated server requires a full registered copy of Quake");
1066 // Con_Printf ("Playing shareware version.\n");
1067 // if (com_modified)
1068 // Sys_Error ("You must have the registered version to use modified games");
1072 Sys_FileRead (h, check, sizeof(check));
1075 for (i=0 ; i<128 ; i++)
1076 if (pop[i] != (unsigned short)BigShort (check[i]))
1077 Sys_Error ("Corrupted data file.");
1079 // Cvar_Set ("cmdline", com_cmdline);
1080 Cvar_Set ("registered", "1");
1081 static_registered = 1;
1082 Con_Printf ("Playing registered version.\n");
1086 void COM_Path_f (void);
1094 void COM_InitArgv (int argc, char **argv)
1099 // reconstitute the command line for the cmdline externally visible cvar
1102 for (j=0 ; (j<MAX_NUM_ARGVS) && (j< argc) ; j++)
1106 while ((n < (CMDLINE_LENGTH - 1)) && argv[j][i])
1108 com_cmdline[n++] = argv[j][i++];
1111 if (n < (CMDLINE_LENGTH - 1))
1112 com_cmdline[n++] = ' ';
1121 for (com_argc=0 ; (com_argc<MAX_NUM_ARGVS) && (com_argc < argc) ;
1124 largv[com_argc] = argv[com_argc];
1125 if (!strcmp ("-safe", argv[com_argc]))
1131 // force all the safe-mode switches. Note that we reserved extra space in
1132 // case we need to add these, so we don't need an overflow check
1133 for (i=0 ; i<NUM_SAFE_ARGVS ; i++)
1135 largv[com_argc] = safeargvs[i];
1140 largv[com_argc] = argvdummy;
1145 standard_quake = false;
1147 if (COM_CheckParm ("-rogue"))
1150 standard_quake = false;
1153 if (COM_CheckParm ("-hipnotic"))
1156 standard_quake = false;
1159 if (COM_CheckParm ("-nehahra"))
1162 standard_quake = false;
1173 void COM_Init (char *basedir)
1176 byte swaptest[2] = {1,0};
1178 // set the byte swapping variables in a portable manner
1179 if ( *(short *)swaptest == 1)
1181 BigShort = ShortSwap;
1182 LittleShort = ShortNoSwap;
1184 LittleLong = LongNoSwap;
1185 BigFloat = FloatSwap;
1186 LittleFloat = FloatNoSwap;
1190 BigShort = ShortNoSwap;
1191 LittleShort = ShortSwap;
1192 BigLong = LongNoSwap;
1193 LittleLong = LongSwap;
1194 BigFloat = FloatNoSwap;
1195 LittleFloat = FloatSwap;
1199 Cvar_RegisterVariable (®istered);
1200 Cvar_RegisterVariable (&cmdline);
1201 Cmd_AddCommand ("path", COM_Path_f);
1203 COM_InitFilesystem ();
1204 COM_CheckRegistered ();
1212 does a varargs printf into a temp buffer, so I don't need to have
1213 varargs versions of all text functions.
1214 FIXME: make this buffer size safe someday
1217 char *va(char *format, ...)
1220 static char string[1024];
1222 va_start (argptr, format);
1223 vsprintf (string, format,argptr);
1230 /// just for debugging
1231 int memsearch (byte *start, int count, int search)
1235 for (i=0 ; i<count ; i++)
1236 if (start[i] == search)
1242 =============================================================================
1246 =============================================================================
1258 char name[MAX_QPATH];
1259 int filepos, filelen;
1262 typedef struct pack_s
1264 char filename[MAX_OSPATH];
1276 int filepos, filelen;
1286 // LordHavoc: was 2048, increased to 16384 and changed info[MAX_PACK_FILES] to a temporary malloc to avoid stack overflows
1287 #define MAX_FILES_IN_PACK 16384
1289 char com_cachedir[MAX_OSPATH];
1290 char com_gamedir[MAX_OSPATH];
1292 typedef struct searchpath_s
1294 char filename[MAX_OSPATH];
1295 pack_t *pack; // only one of filename / pack will be used
1296 struct searchpath_s *next;
1299 searchpath_t *com_searchpaths;
1307 void COM_Path_f (void)
1311 Con_Printf ("Current search path:\n");
1312 for (s=com_searchpaths ; s ; s=s->next)
1316 Con_Printf ("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
1319 Con_Printf ("%s\n", s->filename);
1327 The filename will be prefixed by the current game directory
1330 void COM_WriteFile (char *filename, void *data, int len)
1333 char name[MAX_OSPATH];
1335 sprintf (name, "%s/%s", com_gamedir, filename);
1337 handle = Sys_FileOpenWrite (name);
1340 Sys_Printf ("COM_WriteFile: failed on %s\n", name);
1344 Sys_Printf ("COM_WriteFile: %s\n", name);
1345 Sys_FileWrite (handle, data, len);
1346 Sys_FileClose (handle);
1354 Only used for CopyFile
1357 void COM_CreatePath (char *path)
1361 for (ofs = path+1 ; *ofs ; ofs++)
1364 { // create the directory
1377 Copies a file over from the net to the local cache, creating any directories
1378 needed. This is for the convenience of developers using ISDN from home.
1381 void COM_CopyFile (char *netpath, char *cachepath)
1384 int remaining, count;
1387 remaining = Sys_FileOpenRead (netpath, &in);
1388 COM_CreatePath (cachepath); // create directories up to the cache file
1389 out = Sys_FileOpenWrite (cachepath);
1393 if (remaining < sizeof(buf))
1396 count = sizeof(buf);
1397 Sys_FileRead (in, buf, count);
1398 Sys_FileWrite (out, buf, count);
1403 Sys_FileClose (out);
1410 Finds the file in the search path.
1411 Sets com_filesize and one of handle or file
1414 int COM_FindFile (char *filename, int *handle, FILE **file, qboolean quiet)
1416 searchpath_t *search;
1417 char netpath[MAX_OSPATH];
1418 char cachepath[MAX_OSPATH];
1421 int findtime, cachetime;
1424 Sys_Error ("COM_FindFile: both handle and file set");
1425 if (!file && !handle)
1426 Sys_Error ("COM_FindFile: neither handle or file set");
1429 // search through the path, one element at a time
1431 search = com_searchpaths;
1433 { // gross hack to use quake 1 progs with quake 2 maps
1434 if (!strcmp(filename, "progs.dat"))
1435 search = search->next;
1438 for ( ; search ; search = search->next)
1440 // is the element a pak file?
1443 // look through all the pak file elements
1445 for (i=0 ; i<pak->numfiles ; i++)
1446 if (!strcmp (pak->files[i].name, filename))
1449 Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
1452 *handle = pak->handle;
1453 Sys_FileSeek (pak->handle, pak->files[i].filepos);
1456 { // open a new file on the pakfile
1457 *file = fopen (pak->filename, "rb");
1459 fseek (*file, pak->files[i].filepos, SEEK_SET);
1461 com_filesize = pak->files[i].filelen;
1462 return com_filesize;
1467 // check a file in the directory tree
1468 // if (!static_registered)
1469 // { // if not a registered version, don't ever go beyond base
1470 // if ( strchr (filename, '/') || strchr (filename,'\\'))
1474 sprintf (netpath, "%s/%s",search->filename, filename);
1476 findtime = Sys_FileTime (netpath);
1480 // see if the file needs to be updated in the cache
1481 if (!com_cachedir[0])
1482 strcpy (cachepath, netpath);
1486 if ((strlen(netpath) < 2) || (netpath[1] != ':'))
1487 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1489 sprintf (cachepath,"%s%s", com_cachedir, netpath+2);
1491 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1494 cachetime = Sys_FileTime (cachepath);
1496 if (cachetime < findtime)
1497 COM_CopyFile (netpath, cachepath);
1498 strcpy (netpath, cachepath);
1502 Sys_Printf ("FindFile: %s\n",netpath);
1503 com_filesize = Sys_FileOpenRead (netpath, &i);
1509 *file = fopen (netpath, "rb");
1511 return com_filesize;
1517 Sys_Printf ("FindFile: can't find %s\n", filename);
1532 filename never has a leading slash, but may contain directory walks
1533 returns a handle and a length
1534 it may actually be inside a pak file
1537 int COM_OpenFile (char *filename, int *handle, qboolean quiet)
1539 return COM_FindFile (filename, handle, NULL, quiet);
1546 If the requested file is inside a packfile, a new FILE * will be opened
1550 int COM_FOpenFile (char *filename, FILE **file, qboolean quiet)
1552 return COM_FindFile (filename, NULL, file, quiet);
1559 If it is a pak file handle, don't really close it
1562 void COM_CloseFile (int h)
1566 for (s = com_searchpaths ; s ; s=s->next)
1567 if (s->pack && s->pack->handle == h)
1578 Filename are reletive to the quake directory.
1579 Allways appends a 0 byte.
1582 cache_user_t *loadcache;
1585 byte *COM_LoadFile (char *path, int usehunk, qboolean quiet)
1592 buf = NULL; // quiet compiler warning
1594 // look for it in the filesystem or pack files
1595 len = COM_OpenFile (path, &h, quiet);
1599 // extract the filename base name for hunk tag
1600 COM_FileBase (path, base);
1603 buf = Hunk_AllocName (len+1, base);
1604 else if (usehunk == 2)
1605 buf = Hunk_TempAlloc (len+1);
1606 else if (usehunk == 0)
1607 buf = Z_Malloc (len+1);
1608 else if (usehunk == 3)
1609 buf = Cache_Alloc (loadcache, len+1, base);
1610 else if (usehunk == 4)
1612 if (len+1 > loadsize)
1613 buf = Hunk_TempAlloc (len+1);
1617 else if (usehunk == 5)
1618 buf = malloc (len+1);
1620 Sys_Error ("COM_LoadFile: bad usehunk");
1623 Sys_Error ("COM_LoadFile: not enough space for %s", path);
1625 ((byte *)buf)[len] = 0;
1627 Sys_FileRead (h, buf, len);
1633 byte *COM_LoadHunkFile (char *path, qboolean quiet)
1635 return COM_LoadFile (path, 1, quiet);
1638 byte *COM_LoadTempFile (char *path, qboolean quiet)
1640 return COM_LoadFile (path, 2, quiet);
1643 // LordHavoc: returns malloc'd memory
1644 byte *COM_LoadMallocFile (char *path, qboolean quiet)
1646 return COM_LoadFile (path, 5, quiet);
1649 void COM_LoadCacheFile (char *path, struct cache_user_s *cu, qboolean quiet)
1652 COM_LoadFile (path, 3, quiet);
1655 // uses temp hunk if larger than bufsize
1656 byte *COM_LoadStackFile (char *path, void *buffer, int bufsize, qboolean quiet)
1660 loadbuf = (byte *)buffer;
1662 buf = COM_LoadFile (path, 4, quiet);
1671 Takes an explicit (not game tree related) path to a pak file.
1673 Loads the header and directory, adding the files at the beginning
1674 of the list so they override previous pack files.
1677 pack_t *COM_LoadPackFile (char *packfile)
1679 dpackheader_t header;
1681 packfile_t *newfiles;
1685 // LordHavoc: changed from stack array to temporary malloc, allowing huge pack directories
1689 if (Sys_FileOpenRead (packfile, &packhandle) == -1)
1691 // Con_Printf ("Couldn't open %s\n", packfile);
1694 Sys_FileRead (packhandle, (void *)&header, sizeof(header));
1695 if (header.id[0] != 'P' || header.id[1] != 'A'
1696 || header.id[2] != 'C' || header.id[3] != 'K')
1697 Sys_Error ("%s is not a packfile", packfile);
1698 header.dirofs = LittleLong (header.dirofs);
1699 header.dirlen = LittleLong (header.dirlen);
1701 numpackfiles = header.dirlen / sizeof(dpackfile_t);
1703 if (numpackfiles > MAX_FILES_IN_PACK)
1704 Sys_Error ("%s has %i files", packfile, numpackfiles);
1706 if (numpackfiles != PAK0_COUNT)
1707 com_modified = true; // not the original file
1709 newfiles = Hunk_AllocName (numpackfiles * sizeof(packfile_t), "packfile");
1711 info = malloc(sizeof(*info)*MAX_FILES_IN_PACK);
1712 Sys_FileSeek (packhandle, header.dirofs);
1713 Sys_FileRead (packhandle, (void *)info, header.dirlen);
1715 // crc the directory to check for modifications
1717 // LordHavoc: speedup
1718 CRC_ProcessBytes(&crc, (byte *)info, header.dirlen);
1719 // for (i=0 ; i<header.dirlen ; i++)
1720 // CRC_ProcessByte (&crc, ((byte *)info)[i]);
1721 if (crc != PAK0_CRC)
1722 com_modified = true;
1724 // parse the directory
1725 for (i=0 ; i<numpackfiles ; i++)
1727 strcpy (newfiles[i].name, info[i].name);
1728 newfiles[i].filepos = LittleLong(info[i].filepos);
1729 newfiles[i].filelen = LittleLong(info[i].filelen);
1733 pack = Hunk_Alloc (sizeof (pack_t));
1734 strcpy (pack->filename, packfile);
1735 pack->handle = packhandle;
1736 pack->numfiles = numpackfiles;
1737 pack->files = newfiles;
1739 Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
1746 COM_AddGameDirectory
1748 Sets com_gamedir, adds the directory to the head of the path,
1749 then loads and adds pak1.pak pak2.pak ...
1752 void COM_AddGameDirectory (char *dir)
1755 searchpath_t *search;
1757 char pakfile[MAX_OSPATH];
1759 strcpy (com_gamedir, dir);
1762 // add the directory to the search path
1764 search = Hunk_Alloc (sizeof(searchpath_t));
1765 strcpy (search->filename, dir);
1766 search->next = com_searchpaths;
1767 com_searchpaths = search;
1770 // add any pak files in the format pak0.pak pak1.pak, ...
1774 sprintf (pakfile, "%s/pak%i.pak", dir, i);
1775 pak = COM_LoadPackFile (pakfile);
1778 search = Hunk_Alloc (sizeof(searchpath_t));
1780 search->next = com_searchpaths;
1781 com_searchpaths = search;
1785 // add the contents of the parms.txt file to the end of the command line
1795 void COM_InitFilesystem (void)
1798 char basedir[MAX_OSPATH];
1799 searchpath_t *search;
1803 // Overrides the system supplied base directory (under GAMENAME)
1805 i = COM_CheckParm ("-basedir");
1806 if (i && i < com_argc-1)
1807 strcpy (basedir, com_argv[i+1]);
1809 strcpy (basedir, host_parms.basedir);
1811 j = strlen (basedir);
1815 if ((basedir[j-1] == '\\') || (basedir[j-1] == '/'))
1821 // Overrides the system supplied cache directory (NULL or /qcache)
1822 // -cachedir - will disable caching.
1824 i = COM_CheckParm ("-cachedir");
1825 if (i && i < com_argc-1)
1827 if (com_argv[i+1][0] == '-')
1828 com_cachedir[0] = 0;
1830 strcpy (com_cachedir, com_argv[i+1]);
1832 else if (host_parms.cachedir)
1833 strcpy (com_cachedir, host_parms.cachedir);
1835 com_cachedir[0] = 0;
1838 // start up with GAMENAME by default (id1)
1840 COM_AddGameDirectory (va("%s/"GAMENAME, basedir) );
1843 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1845 if (COM_CheckParm ("-rogue"))
1846 COM_AddGameDirectory (va("%s/rogue", basedir) );
1847 if (COM_CheckParm ("-hipnotic"))
1848 COM_AddGameDirectory (va("%s/hipnotic", basedir) );
1849 if (COM_CheckParm ("-nehahra"))
1850 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1855 // Adds basedir/gamedir as an override game
1857 i = COM_CheckParm ("-game");
1858 if (i && i < com_argc-1)
1860 com_modified = true;
1861 COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
1865 // -path <dir or packfile> [<dir or packfile>] ...
1866 // Fully specifies the exact serach path, overriding the generated one
1868 i = COM_CheckParm ("-path");
1871 com_modified = true;
1872 com_searchpaths = NULL;
1873 while (++i < com_argc)
1875 if (!com_argv[i] || com_argv[i][0] == '+' || com_argv[i][0] == '-')
1878 search = Hunk_Alloc (sizeof(searchpath_t));
1879 if ( !strcmp(COM_FileExtension(com_argv[i]), "pak") )
1881 search->pack = COM_LoadPackFile (com_argv[i]);
1883 Sys_Error ("Couldn't load packfile: %s", com_argv[i]);
1886 strcpy (search->filename, com_argv[i]);
1887 search->next = com_searchpaths;
1888 com_searchpaths = search;
1892 if (COM_CheckParm ("-proghack"))
1896 int COM_FileExists(char *filename)
1898 searchpath_t *search;
1899 char netpath[MAX_OSPATH];
1904 for (search = com_searchpaths;search;search = search->next)
1909 for (i = 0;i < pak->numfiles;i++)
1910 if (!strcmp (pak->files[i].name, filename))
1915 sprintf (netpath, "%s/%s",search->filename, filename);
1916 findtime = Sys_FileTime (netpath);