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: 128k (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;
1170 unsigned int qmalloctotal_alloc, qmalloctotal_alloccount, qmalloctotal_free, qmalloctotal_freecount;
1172 void *qmalloc(unsigned int size)
1175 qmalloctotal_alloc += size;
1176 qmalloctotal_alloccount++;
1177 mem = malloc(size+sizeof(unsigned int));
1181 return (void *)(mem + 1);
1184 void qfree(void *mem)
1190 m--; // back up to size
1191 qmalloctotal_free += *m; // size
1192 qmalloctotal_freecount++;
1196 void GL_TextureStats_PrintTotal(void);
1197 extern int hunk_low_used, hunk_high_used, hunk_size;
1198 void COM_Memstats_f(void)
1200 Con_Printf("%i malloc calls totalling %i bytes (%.4gMB)\n%i free calls totalling %i bytes (%.4gMB)\n%i bytes (%.4gMB) currently allocated\n", qmalloctotal_alloccount, qmalloctotal_alloc, qmalloctotal_alloc / 1048576.0, qmalloctotal_freecount, qmalloctotal_free, qmalloctotal_free / 1048576.0, qmalloctotal_alloc - qmalloctotal_free, (qmalloctotal_alloc - qmalloctotal_free) / 1048576.0);
1201 GL_TextureStats_PrintTotal();
1202 Con_Printf ("%i bytes (%.4gMB) of %.4gMB hunk in use\n", hunk_low_used + hunk_high_used, (hunk_low_used + hunk_high_used) / 1048576.0, hunk_size / 1048576.0);
1211 void COM_Init (char *basedir)
1214 byte swaptest[2] = {1,0};
1216 // set the byte swapping variables in a portable manner
1217 if ( *(short *)swaptest == 1)
1219 BigShort = ShortSwap;
1220 LittleShort = ShortNoSwap;
1222 LittleLong = LongNoSwap;
1223 BigFloat = FloatSwap;
1224 LittleFloat = FloatNoSwap;
1228 BigShort = ShortNoSwap;
1229 LittleShort = ShortSwap;
1230 BigLong = LongNoSwap;
1231 LittleLong = LongSwap;
1232 BigFloat = FloatNoSwap;
1233 LittleFloat = FloatSwap;
1237 Cvar_RegisterVariable (®istered);
1238 Cvar_RegisterVariable (&cmdline);
1239 Cmd_AddCommand ("path", COM_Path_f);
1240 Cmd_AddCommand ("memstats", COM_Memstats_f);
1242 COM_InitFilesystem ();
1243 COM_CheckRegistered ();
1251 does a varargs printf into a temp buffer, so I don't need to have
1252 varargs versions of all text functions.
1253 FIXME: make this buffer size safe someday
1256 char *va(char *format, ...)
1259 static char string[1024];
1261 va_start (argptr, format);
1262 vsprintf (string, format,argptr);
1269 /// just for debugging
1270 int memsearch (byte *start, int count, int search)
1274 for (i=0 ; i<count ; i++)
1275 if (start[i] == search)
1281 =============================================================================
1285 =============================================================================
1297 char name[MAX_QPATH];
1298 int filepos, filelen;
1301 typedef struct pack_s
1303 char filename[MAX_OSPATH];
1315 int filepos, filelen;
1325 // LordHavoc: was 2048, increased to 16384 and changed info[MAX_PACK_FILES] to a temporary malloc to avoid stack overflows
1326 #define MAX_FILES_IN_PACK 16384
1328 char com_cachedir[MAX_OSPATH];
1329 char com_gamedir[MAX_OSPATH];
1331 typedef struct searchpath_s
1333 char filename[MAX_OSPATH];
1334 pack_t *pack; // only one of filename / pack will be used
1335 struct searchpath_s *next;
1338 searchpath_t *com_searchpaths;
1346 void COM_Path_f (void)
1350 Con_Printf ("Current search path:\n");
1351 for (s=com_searchpaths ; s ; s=s->next)
1355 Con_Printf ("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
1358 Con_Printf ("%s\n", s->filename);
1366 The filename will be prefixed by the current game directory
1369 void COM_WriteFile (char *filename, void *data, int len)
1372 char name[MAX_OSPATH];
1374 sprintf (name, "%s/%s", com_gamedir, filename);
1376 handle = Sys_FileOpenWrite (name);
1379 Sys_Printf ("COM_WriteFile: failed on %s\n", name);
1383 Sys_Printf ("COM_WriteFile: %s\n", name);
1384 Sys_FileWrite (handle, data, len);
1385 Sys_FileClose (handle);
1393 Only used for CopyFile
1396 void COM_CreatePath (char *path)
1400 for (ofs = path+1 ; *ofs ; ofs++)
1403 { // create the directory
1416 Copies a file over from the net to the local cache, creating any directories
1417 needed. This is for the convenience of developers using ISDN from home.
1420 void COM_CopyFile (char *netpath, char *cachepath)
1423 int remaining, count;
1426 remaining = Sys_FileOpenRead (netpath, &in);
1427 COM_CreatePath (cachepath); // create directories up to the cache file
1428 out = Sys_FileOpenWrite (cachepath);
1432 if (remaining < sizeof(buf))
1435 count = sizeof(buf);
1436 Sys_FileRead (in, buf, count);
1437 Sys_FileWrite (out, buf, count);
1442 Sys_FileClose (out);
1449 Finds the file in the search path.
1450 Sets com_filesize and one of handle or file
1453 int COM_FindFile (char *filename, int *handle, FILE **file, qboolean quiet)
1455 searchpath_t *search;
1456 char netpath[MAX_OSPATH];
1457 char cachepath[MAX_OSPATH];
1460 int findtime, cachetime;
1463 Sys_Error ("COM_FindFile: both handle and file set");
1464 if (!file && !handle)
1465 Sys_Error ("COM_FindFile: neither handle or file set");
1468 // search through the path, one element at a time
1470 search = com_searchpaths;
1472 { // gross hack to use quake 1 progs with quake 2 maps
1473 if (!strcmp(filename, "progs.dat"))
1474 search = search->next;
1477 for ( ; search ; search = search->next)
1479 // is the element a pak file?
1482 // look through all the pak file elements
1484 for (i=0 ; i<pak->numfiles ; i++)
1485 if (!strcmp (pak->files[i].name, filename))
1488 Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
1491 *handle = pak->handle;
1492 Sys_FileSeek (pak->handle, pak->files[i].filepos);
1495 { // open a new file on the pakfile
1496 *file = fopen (pak->filename, "rb");
1498 fseek (*file, pak->files[i].filepos, SEEK_SET);
1500 com_filesize = pak->files[i].filelen;
1501 return com_filesize;
1506 // check a file in the directory tree
1507 // if (!static_registered)
1508 // { // if not a registered version, don't ever go beyond base
1509 // if ( strchr (filename, '/') || strchr (filename,'\\'))
1513 sprintf (netpath, "%s/%s",search->filename, filename);
1515 findtime = Sys_FileTime (netpath);
1519 // see if the file needs to be updated in the cache
1520 if (!com_cachedir[0])
1521 strcpy (cachepath, netpath);
1525 if ((strlen(netpath) < 2) || (netpath[1] != ':'))
1526 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1528 sprintf (cachepath,"%s%s", com_cachedir, netpath+2);
1530 sprintf (cachepath,"%s%s", com_cachedir, netpath);
1533 cachetime = Sys_FileTime (cachepath);
1535 if (cachetime < findtime)
1536 COM_CopyFile (netpath, cachepath);
1537 strcpy (netpath, cachepath);
1541 Sys_Printf ("FindFile: %s\n",netpath);
1542 com_filesize = Sys_FileOpenRead (netpath, &i);
1548 *file = fopen (netpath, "rb");
1550 return com_filesize;
1556 Sys_Printf ("FindFile: can't find %s\n", filename);
1571 filename never has a leading slash, but may contain directory walks
1572 returns a handle and a length
1573 it may actually be inside a pak file
1576 int COM_OpenFile (char *filename, int *handle, qboolean quiet)
1578 return COM_FindFile (filename, handle, NULL, quiet);
1585 If the requested file is inside a packfile, a new FILE * will be opened
1589 int COM_FOpenFile (char *filename, FILE **file, qboolean quiet)
1591 return COM_FindFile (filename, NULL, file, quiet);
1598 If it is a pak file handle, don't really close it
1601 void COM_CloseFile (int h)
1605 for (s = com_searchpaths ; s ; s=s->next)
1606 if (s->pack && s->pack->handle == h)
1617 Filename are reletive to the quake directory.
1618 Allways appends a 0 byte.
1621 cache_user_t *loadcache;
1624 byte *COM_LoadFile (char *path, int usehunk, qboolean quiet)
1631 buf = NULL; // quiet compiler warning
1633 // look for it in the filesystem or pack files
1634 len = COM_OpenFile (path, &h, quiet);
1638 // extract the filename base name for hunk tag
1639 COM_FileBase (path, base);
1644 buf = Hunk_AllocName (len+1, va("%s (file)", path));
1646 Sys_Error ("COM_LoadFile: not enough hunk space for %s (size %i)", path, len);
1649 // buf = Z_Malloc (len+1);
1651 // Sys_Error ("COM_LoadFile: not enough zone space for %s (size %i)", path, len);
1654 buf = Cache_Alloc (loadcache, len+1, base);
1656 Sys_Error ("COM_LoadFile: not enough cache space for %s (size %i)", path, len);
1659 buf = qmalloc (len+1);
1661 Sys_Error ("COM_LoadFile: not enough available memory for %s (size %i)", path, len);
1664 Sys_Error ("COM_LoadFile: bad usehunk");
1668 ((byte *)buf)[len] = 0;
1670 Sys_FileRead (h, buf, len);
1676 byte *COM_LoadHunkFile (char *path, qboolean quiet)
1678 return COM_LoadFile (path, 1, quiet);
1681 // LordHavoc: returns malloc'd memory
1682 byte *COM_LoadMallocFile (char *path, qboolean quiet)
1684 return COM_LoadFile (path, 5, quiet);
1687 void COM_LoadCacheFile (char *path, struct cache_user_s *cu, qboolean quiet)
1690 COM_LoadFile (path, 3, quiet);
1697 Takes an explicit (not game tree related) path to a pak file.
1699 Loads the header and directory, adding the files at the beginning
1700 of the list so they override previous pack files.
1703 pack_t *COM_LoadPackFile (char *packfile)
1705 dpackheader_t header;
1707 packfile_t *newfiles;
1711 // LordHavoc: changed from stack array to temporary malloc, allowing huge pack directories
1715 if (Sys_FileOpenRead (packfile, &packhandle) == -1)
1717 // Con_Printf ("Couldn't open %s\n", packfile);
1720 Sys_FileRead (packhandle, (void *)&header, sizeof(header));
1721 if (header.id[0] != 'P' || header.id[1] != 'A'
1722 || header.id[2] != 'C' || header.id[3] != 'K')
1723 Sys_Error ("%s is not a packfile", packfile);
1724 header.dirofs = LittleLong (header.dirofs);
1725 header.dirlen = LittleLong (header.dirlen);
1727 numpackfiles = header.dirlen / sizeof(dpackfile_t);
1729 if (numpackfiles > MAX_FILES_IN_PACK)
1730 Sys_Error ("%s has %i files", packfile, numpackfiles);
1732 if (numpackfiles != PAK0_COUNT)
1733 com_modified = true; // not the original file
1735 newfiles = Hunk_AllocName (numpackfiles * sizeof(packfile_t), "pack file-table");
1737 info = qmalloc(sizeof(*info)*MAX_FILES_IN_PACK);
1738 Sys_FileSeek (packhandle, header.dirofs);
1739 Sys_FileRead (packhandle, (void *)info, header.dirlen);
1741 // crc the directory to check for modifications
1743 // LordHavoc: speedup
1744 CRC_ProcessBytes(&crc, (byte *)info, header.dirlen);
1745 // for (i=0 ; i<header.dirlen ; i++)
1746 // CRC_ProcessByte (&crc, ((byte *)info)[i]);
1747 if (crc != PAK0_CRC)
1748 com_modified = true;
1750 // parse the directory
1751 for (i=0 ; i<numpackfiles ; i++)
1753 strcpy (newfiles[i].name, info[i].name);
1754 newfiles[i].filepos = LittleLong(info[i].filepos);
1755 newfiles[i].filelen = LittleLong(info[i].filelen);
1759 pack = Hunk_AllocName (sizeof (pack_t), packfile);
1760 strcpy (pack->filename, packfile);
1761 pack->handle = packhandle;
1762 pack->numfiles = numpackfiles;
1763 pack->files = newfiles;
1765 Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
1772 COM_AddGameDirectory
1774 Sets com_gamedir, adds the directory to the head of the path,
1775 then loads and adds pak1.pak pak2.pak ...
1778 void COM_AddGameDirectory (char *dir)
1781 searchpath_t *search;
1783 char pakfile[MAX_OSPATH];
1785 strcpy (com_gamedir, dir);
1788 // add the directory to the search path
1790 search = Hunk_AllocName (sizeof(searchpath_t), "pack info");
1791 strcpy (search->filename, dir);
1792 search->next = com_searchpaths;
1793 com_searchpaths = search;
1796 // add any pak files in the format pak0.pak pak1.pak, ...
1800 sprintf (pakfile, "%s/pak%i.pak", dir, i);
1801 pak = COM_LoadPackFile (pakfile);
1804 search = Hunk_AllocName (sizeof(searchpath_t), "pack info");
1806 search->next = com_searchpaths;
1807 com_searchpaths = search;
1811 // add the contents of the parms.txt file to the end of the command line
1821 void COM_InitFilesystem (void)
1824 char basedir[MAX_OSPATH];
1825 searchpath_t *search;
1829 // Overrides the system supplied base directory (under GAMENAME)
1831 i = COM_CheckParm ("-basedir");
1832 if (i && i < com_argc-1)
1833 strcpy (basedir, com_argv[i+1]);
1835 strcpy (basedir, host_parms.basedir);
1837 j = strlen (basedir);
1841 if ((basedir[j-1] == '\\') || (basedir[j-1] == '/'))
1847 // Overrides the system supplied cache directory (NULL or /qcache)
1848 // -cachedir - will disable caching.
1850 i = COM_CheckParm ("-cachedir");
1851 if (i && i < com_argc-1)
1853 if (com_argv[i+1][0] == '-')
1854 com_cachedir[0] = 0;
1856 strcpy (com_cachedir, com_argv[i+1]);
1858 else if (host_parms.cachedir)
1859 strcpy (com_cachedir, host_parms.cachedir);
1861 com_cachedir[0] = 0;
1864 // start up with GAMENAME by default (id1)
1866 COM_AddGameDirectory (va("%s/"GAMENAME, basedir) );
1869 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1871 if (COM_CheckParm ("-rogue"))
1872 COM_AddGameDirectory (va("%s/rogue", basedir) );
1873 if (COM_CheckParm ("-hipnotic"))
1874 COM_AddGameDirectory (va("%s/hipnotic", basedir) );
1875 if (COM_CheckParm ("-nehahra"))
1876 COM_AddGameDirectory (va("%s/nehahra", basedir) );
1881 // Adds basedir/gamedir as an override game
1883 i = COM_CheckParm ("-game");
1884 if (i && i < com_argc-1)
1886 com_modified = true;
1887 COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
1891 // -path <dir or packfile> [<dir or packfile>] ...
1892 // Fully specifies the exact search path, overriding the generated one
1894 i = COM_CheckParm ("-path");
1897 com_modified = true;
1898 com_searchpaths = NULL;
1899 while (++i < com_argc)
1901 if (!com_argv[i] || com_argv[i][0] == '+' || com_argv[i][0] == '-')
1904 search = Hunk_AllocName (sizeof(searchpath_t), "pack info");
1905 if ( !strcmp(COM_FileExtension(com_argv[i]), "pak") )
1907 search->pack = COM_LoadPackFile (com_argv[i]);
1909 Sys_Error ("Couldn't load packfile: %s", com_argv[i]);
1912 strcpy (search->filename, com_argv[i]);
1913 search->next = com_searchpaths;
1914 com_searchpaths = search;
1918 if (COM_CheckParm ("-proghack"))
1922 int COM_FileExists(char *filename)
1924 searchpath_t *search;
1925 char netpath[MAX_OSPATH];
1930 for (search = com_searchpaths;search;search = search->next)
1935 for (i = 0;i < pak->numfiles;i++)
1936 if (!strcmp (pak->files[i].name, filename))
1941 sprintf (netpath, "%s/%s",search->filename, filename);
1942 findtime = Sys_FileTime (netpath);
1952 //======================================
1953 // LordHavoc: added these because they are useful
1955 void COM_ToLowerString(char *in, char *out)
1959 if (*in >= 'A' && *in <= 'Z')
1960 *out++ = *in++ + 'a' - 'A';
1966 void COM_ToUpperString(char *in, char *out)
1970 if (*in >= 'a' && *in <= 'z')
1971 *out++ = *in++ + 'A' - 'a';