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
30 cvar_t registered = {0, "registered","0"};
31 cvar_t cmdline = {0, "cmdline","0"};
33 extern qboolean fs_modified; // set true if using non-id files
37 const char **com_argv;
39 // LordHavoc: made commandline 1024 characters instead of 256
40 #define CMDLINE_LENGTH 1024
41 char com_cmdline[CMDLINE_LENGTH];
46 char com_modname[MAX_OSPATH];
50 ============================================================================
54 ============================================================================
57 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
58 short (*BigShort) (short l);
59 short (*LittleShort) (short l);
60 int (*BigLong) (int l);
61 int (*LittleLong) (int l);
62 float (*BigFloat) (float l);
63 float (*LittleFloat) (float l);
66 short ShortSwap (short l)
76 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
77 short ShortNoSwap (short l)
92 return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
95 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
96 int LongNoSwap (int l)
102 float FloatSwap (float f)
112 dat2.b[0] = dat1.b[3];
113 dat2.b[1] = dat1.b[2];
114 dat2.b[2] = dat1.b[1];
115 dat2.b[3] = dat1.b[0];
119 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
120 float FloatNoSwap (float f)
127 // Extract integers from buffers
129 unsigned int BuffBigLong (const qbyte *buffer)
131 return (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | buffer[3];
134 unsigned short BuffBigShort (const qbyte *buffer)
136 return (buffer[0] << 8) | buffer[1];
139 unsigned int BuffLittleLong (const qbyte *buffer)
141 return (buffer[3] << 24) | (buffer[2] << 16) | (buffer[1] << 8) | buffer[0];
144 unsigned short BuffLittleShort (const qbyte *buffer)
146 return (buffer[1] << 8) | buffer[0];
151 ==============================================================================
155 Handles byte ordering and avoids alignment errors
156 ==============================================================================
163 void MSG_WriteChar (sizebuf_t *sb, int c)
167 buf = SZ_GetSpace (sb, 1);
171 void MSG_WriteByte (sizebuf_t *sb, int c)
175 buf = SZ_GetSpace (sb, 1);
179 void MSG_WriteShort (sizebuf_t *sb, int c)
183 buf = SZ_GetSpace (sb, 2);
188 void MSG_WriteLong (sizebuf_t *sb, int c)
192 buf = SZ_GetSpace (sb, 4);
194 buf[1] = (c>>8)&0xff;
195 buf[2] = (c>>16)&0xff;
199 void MSG_WriteFloat (sizebuf_t *sb, float f)
209 dat.l = LittleLong (dat.l);
211 SZ_Write (sb, &dat.l, 4);
214 void MSG_WriteString (sizebuf_t *sb, const char *s)
217 SZ_Write (sb, "", 1);
219 SZ_Write (sb, s, strlen(s)+1);
222 // used by server (always latest PROTOCOL_DARKPLACES)
223 void MSG_WriteDPCoord (sizebuf_t *sb, float f)
226 MSG_WriteShort (sb, (int)(f + 0.5f));
228 MSG_WriteShort (sb, (int)(f - 0.5f));
231 void MSG_WritePreciseAngle (sizebuf_t *sb, float f)
234 MSG_WriteShort (sb, (int)(f*(65536.0f/360.0f) + 0.5f) & 65535);
236 MSG_WriteShort (sb, (int)(f*(65536.0f/360.0f) - 0.5f) & 65535);
239 // LordHavoc: round to nearest value, rather than rounding toward zero, fixes crosshair problem
240 void MSG_WriteAngle (sizebuf_t *sb, float f)
243 MSG_WriteByte (sb, (int)(f*(256.0f/360.0f) + 0.5f) & 255);
245 MSG_WriteByte (sb, (int)(f*(256.0f/360.0f) - 0.5f) & 255);
252 qboolean msg_badread;
254 void MSG_BeginReading (void)
260 int MSG_ReadLittleShort (void)
262 if (msg_readcount+2 > net_message.cursize)
268 return (short)(net_message.data[msg_readcount-2] | (net_message.data[msg_readcount-1]<<8));
271 int MSG_ReadBigShort (void)
273 if (msg_readcount+2 > net_message.cursize)
279 return (short)((net_message.data[msg_readcount-2]<<8) + net_message.data[msg_readcount-1]);
282 int MSG_ReadLittleLong (void)
284 if (msg_readcount+4 > net_message.cursize)
290 return net_message.data[msg_readcount-4] | (net_message.data[msg_readcount-3]<<8) | (net_message.data[msg_readcount-2]<<16) | (net_message.data[msg_readcount-1]<<24);
293 int MSG_ReadBigLong (void)
295 if (msg_readcount+4 > net_message.cursize)
301 return (net_message.data[msg_readcount-4]<<24) + (net_message.data[msg_readcount-3]<<16) + (net_message.data[msg_readcount-2]<<8) + net_message.data[msg_readcount-1];
304 float MSG_ReadLittleFloat (void)
311 if (msg_readcount+4 > net_message.cursize)
317 dat.l = net_message.data[msg_readcount-4] | (net_message.data[msg_readcount-3]<<8) | (net_message.data[msg_readcount-2]<<16) | (net_message.data[msg_readcount-1]<<24);
321 float MSG_ReadBigFloat (void)
328 if (msg_readcount+4 > net_message.cursize)
334 dat.l = (net_message.data[msg_readcount-4]<<24) | (net_message.data[msg_readcount-3]<<16) | (net_message.data[msg_readcount-2]<<8) | net_message.data[msg_readcount-1];
338 char *MSG_ReadString (void)
340 static char string[2048];
342 for (l = 0;l < (int) sizeof(string) - 1 && (c = MSG_ReadChar()) != -1 && c != 0;l++)
348 int MSG_ReadBytes (int numbytes, unsigned char *out)
351 for (l = 0;l < numbytes && (c = MSG_ReadChar()) != -1;l++)
356 // used by server (always latest PROTOCOL_DARKPLACES)
357 float MSG_ReadDPCoord (void)
359 return (signed short) MSG_ReadLittleShort();
363 float MSG_ReadCoord (void)
365 if (cl.protocol == PROTOCOL_DARKPLACES2 || cl.protocol == PROTOCOL_DARKPLACES3 || cl.protocol == PROTOCOL_DARKPLACES4)
366 return (signed short) MSG_ReadLittleShort();
367 else if (cl.protocol == PROTOCOL_DARKPLACES1)
368 return MSG_ReadLittleFloat();
370 return MSG_ReadLittleShort() * (1.0f/8.0f);
374 //===========================================================================
376 void SZ_Alloc (sizebuf_t *buf, int startsize, const char *name)
380 buf->mempool = Mem_AllocPool(name);
381 buf->data = Mem_Alloc(buf->mempool, startsize);
382 buf->maxsize = startsize;
387 void SZ_Free (sizebuf_t *buf)
389 Mem_FreePool(&buf->mempool);
395 void SZ_Clear (sizebuf_t *buf)
400 void *SZ_GetSpace (sizebuf_t *buf, int length)
404 if (buf->cursize + length > buf->maxsize)
406 if (!buf->allowoverflow)
407 Host_Error ("SZ_GetSpace: overflow without allowoverflow set\n");
409 if (length > buf->maxsize)
410 Host_Error ("SZ_GetSpace: %i is > full buffer size\n", length);
412 buf->overflowed = true;
413 Con_Printf ("SZ_GetSpace: overflow\n");
417 data = buf->data + buf->cursize;
418 buf->cursize += length;
423 void SZ_Write (sizebuf_t *buf, const void *data, int length)
425 memcpy (SZ_GetSpace(buf,length),data,length);
428 void SZ_Print (sizebuf_t *buf, const char *data)
431 len = strlen(data)+1;
433 // byte * cast to keep VC++ happy
434 if (buf->data[buf->cursize-1])
435 memcpy ((qbyte *)SZ_GetSpace(buf, len),data,len); // no trailing 0
437 memcpy ((qbyte *)SZ_GetSpace(buf, len-1)-1,data,len); // write over trailing 0
440 static char *hexchar = "0123456789ABCDEF";
441 void Com_HexDumpToConsole(const qbyte *data, int size)
445 char *cur, *flushpointer;
448 flushpointer = text + 512;
449 for (i = 0;i < size;)
455 *cur++ = hexchar[(i >> 12) & 15];
456 *cur++ = hexchar[(i >> 8) & 15];
457 *cur++ = hexchar[(i >> 4) & 15];
458 *cur++ = hexchar[(i >> 0) & 15];
460 for (j = 0;j < n;j++)
464 *cur++ = hexchar[(d[j] >> 4) & 15] | 0x80;
465 *cur++ = hexchar[(d[j] >> 0) & 15] | 0x80;
469 *cur++ = hexchar[(d[j] >> 4) & 15];
470 *cur++ = hexchar[(d[j] >> 0) & 15];
478 for (j = 0;j < n;j++)
479 *cur++ = (d[j] >= ' ' && d[j] <= 0x7E) ? d[j] : '.';
484 if (cur >= flushpointer || i >= size)
487 Con_Printf("%s", text);
493 void SZ_HexDumpToConsole(const sizebuf_t *buf)
495 Com_HexDumpToConsole(buf->data, buf->cursize);
499 //============================================================================
506 Parse a token out of a string
509 int COM_ParseToken(const char **datapointer, int returnnewline)
513 const char *data = *datapointer;
526 while ((c = *data) <= ' ' && (c != '\n' || !returnnewline))
537 // check if it's a comment
543 while (*data && *data != '\n')
550 while (*data && (*data != '*' || data[1] != '/'))
557 // handle quoted strings specially
575 // parse single characters
576 if (c == '{' || c == '}' || c == ')' || c == '(' || c == ']' || c == '[' || c == '\'' || c == ':' || c == ',' || c == ';' || c == '\n')
581 *datapointer = data+1;
585 // parse a regular word
592 if (c == '{' || c == '}' || c == ')' || c == '(' || c == ']' || c == '[' || c == '\'' || c == ':' || c == ',' || c == ';')
603 COM_ParseTokenConsole
605 Parse a token out of a string, behaving like the qwcl console
608 int COM_ParseTokenConsole(const char **datapointer)
612 const char *data = *datapointer;
625 while ((c = *data) <= ' ')
637 if (c == '/' && data[1] == '/')
639 while (*data && *data != '\n')
644 // handle quoted strings specially
662 // parse a regular word
681 Returns the position (1 to argc-1) in the program's argument list
682 where the given parameter apears, or 0 if not present
685 int COM_CheckParm (const char *parm)
689 for (i=1 ; i<com_argc ; i++)
692 continue; // NEXTSTEP sometimes clears appkit vars.
693 if (!strcmp (parm,com_argv[i]))
704 Looks for the pop.txt file and verifies it.
705 Sets the "registered" cvar.
706 Immediately exits out if an alternate game was attempted to be started without
710 void COM_CheckRegistered (void)
712 Cvar_Set ("cmdline", com_cmdline);
714 if (!FS_FileExists("gfx/pop.lmp"))
717 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
719 Con_Printf ("Playing shareware version.\n");
723 Cvar_Set ("registered", "1");
724 Con_Printf ("Playing registered version.\n");
733 void COM_InitArgv (void)
736 // reconstitute the command line for the cmdline externally visible cvar
738 for (j = 0;(j < MAX_NUM_ARGVS) && (j < com_argc);j++)
741 while ((n < (CMDLINE_LENGTH - 1)) && com_argv[j][i])
742 com_cmdline[n++] = com_argv[j][i++];
743 if (n < (CMDLINE_LENGTH - 1))
744 com_cmdline[n++] = ' ';
751 void COM_InitGameType (void)
753 char name[MAX_OSPATH];
754 FS_StripExtension (com_argv[0], name, sizeof (name));
755 COM_ToLowerString (name, name, sizeof (name));
757 if (strstr(name, "transfusion"))
758 gamemode = GAME_TRANSFUSION;
759 else if (strstr(name, "nexuiz"))
760 gamemode = GAME_NEXUIZ;
761 else if (strstr(name, "nehahra"))
762 gamemode = GAME_NEHAHRA;
763 else if (strstr(name, "hipnotic"))
764 gamemode = GAME_HIPNOTIC;
765 else if (strstr(name, "rogue"))
766 gamemode = GAME_ROGUE;
767 else if (strstr(name, "gvb2"))
768 gamemode = GAME_GOODVSBAD2;
769 else if (strstr(name, "teu"))
771 else if (strstr(name, "battlemech"))
772 gamemode = GAME_BATTLEMECH;
773 else if (strstr(name, "zymotic"))
774 gamemode = GAME_ZYMOTIC;
775 else if (strstr(name, "fniggium"))
776 gamemode = GAME_FNIGGIUM;
777 else if (strstr(name, "setheral"))
778 gamemode = GAME_SETHERAL;
780 gamemode = GAME_NORMAL;
782 if (COM_CheckParm ("-transfusion"))
783 gamemode = GAME_TRANSFUSION;
784 else if (COM_CheckParm ("-nexuiz"))
785 gamemode = GAME_NEXUIZ;
786 else if (COM_CheckParm ("-nehahra"))
787 gamemode = GAME_NEHAHRA;
788 else if (COM_CheckParm ("-hipnotic"))
789 gamemode = GAME_HIPNOTIC;
790 else if (COM_CheckParm ("-rogue"))
791 gamemode = GAME_ROGUE;
792 else if (COM_CheckParm ("-quake"))
793 gamemode = GAME_NORMAL;
794 else if (COM_CheckParm ("-goodvsbad2"))
795 gamemode = GAME_GOODVSBAD2;
796 else if (COM_CheckParm ("-teu"))
798 else if (COM_CheckParm ("-battlemech"))
799 gamemode = GAME_BATTLEMECH;
800 else if (COM_CheckParm ("-zymotic"))
801 gamemode = GAME_ZYMOTIC;
802 else if (COM_CheckParm ("-fniggium"))
803 gamemode = GAME_FNIGGIUM;
804 else if (COM_CheckParm ("-setheral"))
805 gamemode = GAME_SETHERAL;
810 gamename = "DarkPlaces-Quake";
814 gamename = "Darkplaces-Hipnotic";
815 gamedirname = "hipnotic";
818 gamename = "Darkplaces-Rogue";
819 gamedirname = "rogue";
822 gamename = "DarkPlaces-Nehahra";
823 gamedirname = "nehahra";
827 gamedirname = "data";
829 case GAME_TRANSFUSION:
830 gamename = "Transfusion";
831 gamedirname = "transfusion";
833 case GAME_GOODVSBAD2:
834 gamename = "GoodVs.Bad2";
838 gamename = "TheEvilUnleashed";
839 gamedirname = "baseteu";
841 case GAME_BATTLEMECH:
842 gamename = "Battlemech";
843 gamedirname = "base";
846 gamename = "Zymotic";
847 gamedirname = "data";
850 gamename = "Fniggium";
851 gamedirname = "data";
854 gamename = "Setheral";
855 gamedirname = "data";
858 Sys_Error("COM_InitGameType: unknown gamemode %i\n", gamemode);
864 extern void Mathlib_Init(void);
865 extern void FS_Init (void);
874 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
875 qbyte swaptest[2] = {1,0};
877 // set the byte swapping variables in a portable manner
878 if ( *(short *)swaptest == 1)
880 BigShort = ShortSwap;
881 LittleShort = ShortNoSwap;
883 LittleLong = LongNoSwap;
884 BigFloat = FloatSwap;
885 LittleFloat = FloatNoSwap;
889 BigShort = ShortNoSwap;
890 LittleShort = ShortSwap;
891 BigLong = LongNoSwap;
892 LittleLong = LongSwap;
893 BigFloat = FloatNoSwap;
894 LittleFloat = FloatSwap;
898 Cvar_RegisterVariable (®istered);
899 Cvar_RegisterVariable (&cmdline);
905 COM_CheckRegistered ();
915 does a varargs printf into a temp buffer, so I don't need to have
916 varargs versions of all text functions.
917 FIXME: make this buffer size safe someday
920 char *va(const char *format, ...)
923 // LordHavoc: now cycles through 8 buffers to avoid problems in most cases
924 static char string[8][1024], *s;
925 static int stringindex = 0;
927 s = string[stringindex];
928 stringindex = (stringindex + 1) & 7;
929 va_start (argptr, format);
930 vsnprintf (s, sizeof (string[0]), format,argptr);
937 //======================================
939 void COM_ToLowerString (const char *in, char *out, size_t size_out)
944 while (*in && size_out > 1)
946 if (*in >= 'A' && *in <= 'Z')
947 *out++ = *in++ + 'a' - 'A';
955 void COM_ToUpperString (const char *in, char *out, size_t size_out)
960 while (*in && size_out > 1)
962 if (*in >= 'a' && *in <= 'z')
963 *out++ = *in++ + 'A' - 'a';
971 int COM_StringBeginsWith(const char *s, const char *match)
973 for (;*s && *match;s++, match++)
979 int COM_ReadAndTokenizeLine(const char **text, char **argv, int maxargc, char *tokenbuf, int tokenbufsize, const char *commentprefix)
981 int argc, commentprefixlength;
985 tokenbufend = tokenbuf + tokenbufsize;
987 commentprefixlength = 0;
989 commentprefixlength = strlen(commentprefix);
990 while (*l && *l != '\n')
994 if (commentprefixlength && !strncmp(l, commentprefix, commentprefixlength))
996 while (*l && *l != '\n')
1000 if (argc >= maxargc)
1002 argv[argc++] = tokenbuf;
1006 while (*l && *l != '"')
1008 if (tokenbuf >= tokenbufend)
1019 if (tokenbuf >= tokenbufend)
1024 if (tokenbuf >= tokenbufend)
1037 // written by Elric, thanks Elric!
1038 char *SearchInfostring(const char *infostring, const char *key)
1040 static char value [256];
1042 size_t value_ind, key_ind;
1045 if (*infostring++ != '\\')
1060 if (c == '\\' || key_ind == sizeof (crt_key) - 1)
1062 crt_key[key_ind] = '\0';
1066 crt_key[key_ind++] = c;
1069 // If it's the key we are looking for, save it in "value"
1070 if (!strcmp(crt_key, key))
1076 if (c == '\0' || c == '\\' || value_ind == sizeof (value) - 1)
1078 value[value_ind] = '\0';
1082 value[value_ind++] = c;
1086 // Else, skip the value
1100 //========================================================
1101 // strlcat and strlcpy, from OpenBSD
1104 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
1106 * Permission to use, copy, modify, and distribute this software for any
1107 * purpose with or without fee is hereby granted, provided that the above
1108 * copyright notice and this permission notice appear in all copies.
1110 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
1111 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1112 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
1113 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1114 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1115 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
1116 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1119 /* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */
1120 /* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
1123 // Most (all?) BSDs already have them
1124 #if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
1127 strlcat(char *dst, const char *src, size_t siz)
1129 register char *d = dst;
1130 register const char *s = src;
1131 register size_t n = siz;
1134 /* Find the end of dst and adjust bytes left but don't go past end */
1135 while (n-- != 0 && *d != '\0')
1141 return(dlen + strlen(s));
1142 while (*s != '\0') {
1151 return(dlen + (s - src)); /* count does not include NUL */
1155 strlcpy(char *dst, const char *src, size_t siz)
1157 register char *d = dst;
1158 register const char *s = src;
1159 register size_t n = siz;
1161 /* Copy as many bytes as will fit */
1162 if (n != 0 && --n != 0) {
1164 if ((*d++ = *s++) == 0)
1169 /* Not enough room in dst, add NUL and traverse rest of src */
1172 *d = '\0'; /* NUL-terminate dst */
1177 return(s - src - 1); /* count does not include NUL */
1180 #endif // #if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)