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 *gamescreenshotname;
47 char com_modname[MAX_OSPATH] = "";
51 ============================================================================
55 ============================================================================
58 short ShortSwap (short l)
77 return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
80 float FloatSwap (float f)
90 dat2.b[0] = dat1.b[3];
91 dat2.b[1] = dat1.b[2];
92 dat2.b[2] = dat1.b[1];
93 dat2.b[3] = dat1.b[0];
98 // Extract integers from buffers
100 unsigned int BuffBigLong (const qbyte *buffer)
102 return (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | buffer[3];
105 unsigned short BuffBigShort (const qbyte *buffer)
107 return (buffer[0] << 8) | buffer[1];
110 unsigned int BuffLittleLong (const qbyte *buffer)
112 return (buffer[3] << 24) | (buffer[2] << 16) | (buffer[1] << 8) | buffer[0];
115 unsigned short BuffLittleShort (const qbyte *buffer)
117 return (buffer[1] << 8) | buffer[0];
122 ==============================================================================
126 Handles byte ordering and avoids alignment errors
127 ==============================================================================
134 void MSG_WriteChar (sizebuf_t *sb, int c)
138 buf = SZ_GetSpace (sb, 1);
142 void MSG_WriteByte (sizebuf_t *sb, int c)
146 buf = SZ_GetSpace (sb, 1);
150 void MSG_WriteShort (sizebuf_t *sb, int c)
154 buf = SZ_GetSpace (sb, 2);
159 void MSG_WriteLong (sizebuf_t *sb, int c)
163 buf = SZ_GetSpace (sb, 4);
165 buf[1] = (c>>8)&0xff;
166 buf[2] = (c>>16)&0xff;
170 void MSG_WriteFloat (sizebuf_t *sb, float f)
180 dat.l = LittleLong (dat.l);
182 SZ_Write (sb, &dat.l, 4);
185 void MSG_WriteString (sizebuf_t *sb, const char *s)
188 SZ_Write (sb, "", 1);
190 SZ_Write (sb, s, strlen(s)+1);
193 // used by server (always latest PROTOCOL_DARKPLACES)
194 void MSG_WriteDPCoord (sizebuf_t *sb, float f)
197 MSG_WriteShort (sb, (int)(f + 0.5f));
199 MSG_WriteShort (sb, (int)(f - 0.5f));
202 void MSG_WritePreciseAngle (sizebuf_t *sb, float f)
205 MSG_WriteShort (sb, (int)(f*(65536.0f/360.0f) + 0.5f) & 65535);
207 MSG_WriteShort (sb, (int)(f*(65536.0f/360.0f) - 0.5f) & 65535);
210 // LordHavoc: round to nearest value, rather than rounding toward zero, fixes crosshair problem
211 void MSG_WriteAngle (sizebuf_t *sb, float f)
214 MSG_WriteByte (sb, (int)(f*(256.0f/360.0f) + 0.5f) & 255);
216 MSG_WriteByte (sb, (int)(f*(256.0f/360.0f) - 0.5f) & 255);
223 qboolean msg_badread;
225 void MSG_BeginReading (void)
231 int MSG_ReadLittleShort (void)
233 if (msg_readcount+2 > net_message.cursize)
239 return (short)(net_message.data[msg_readcount-2] | (net_message.data[msg_readcount-1]<<8));
242 int MSG_ReadBigShort (void)
244 if (msg_readcount+2 > net_message.cursize)
250 return (short)((net_message.data[msg_readcount-2]<<8) + net_message.data[msg_readcount-1]);
253 int MSG_ReadLittleLong (void)
255 if (msg_readcount+4 > net_message.cursize)
261 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);
264 int MSG_ReadBigLong (void)
266 if (msg_readcount+4 > net_message.cursize)
272 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];
275 float MSG_ReadLittleFloat (void)
282 if (msg_readcount+4 > net_message.cursize)
288 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);
292 float MSG_ReadBigFloat (void)
299 if (msg_readcount+4 > net_message.cursize)
305 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];
309 char *MSG_ReadString (void)
311 static char string[2048];
313 for (l = 0;l < (int) sizeof(string) - 1 && (c = MSG_ReadChar()) != -1 && c != 0;l++)
319 int MSG_ReadBytes (int numbytes, unsigned char *out)
322 for (l = 0;l < numbytes && (c = MSG_ReadChar()) != -1;l++)
328 float MSG_ReadCoord (void)
330 if (cl.protocol == PROTOCOL_DARKPLACES2 || cl.protocol == PROTOCOL_DARKPLACES3 || cl.protocol == PROTOCOL_DARKPLACES4 || cl.protocol == PROTOCOL_DARKPLACES5)
331 return (signed short) MSG_ReadLittleShort();
332 else if (cl.protocol == PROTOCOL_DARKPLACES1)
333 return MSG_ReadLittleFloat();
335 return MSG_ReadLittleShort() * (1.0f/8.0f);
339 //===========================================================================
341 void SZ_Alloc (sizebuf_t *buf, int startsize, const char *name)
345 buf->mempool = Mem_AllocPool(name);
346 buf->data = Mem_Alloc(buf->mempool, startsize);
347 buf->maxsize = startsize;
352 void SZ_Free (sizebuf_t *buf)
354 Mem_FreePool(&buf->mempool);
360 void SZ_Clear (sizebuf_t *buf)
365 void *SZ_GetSpace (sizebuf_t *buf, int length)
369 if (buf->cursize + length > buf->maxsize)
371 if (!buf->allowoverflow)
372 Host_Error ("SZ_GetSpace: overflow without allowoverflow set\n");
374 if (length > buf->maxsize)
375 Host_Error ("SZ_GetSpace: %i is > full buffer size\n", length);
377 buf->overflowed = true;
378 Con_Print("SZ_GetSpace: overflow\n");
382 data = buf->data + buf->cursize;
383 buf->cursize += length;
388 void SZ_Write (sizebuf_t *buf, const void *data, int length)
390 memcpy (SZ_GetSpace(buf,length),data,length);
393 // LordHavoc: thanks to Fuh for bringing the pure evil of SZ_Print to my
394 // attention, it has been eradicated from here, its only (former) use in
395 // all of darkplaces.
397 static char *hexchar = "0123456789ABCDEF";
398 void Com_HexDumpToConsole(const qbyte *data, int size)
402 char *cur, *flushpointer;
405 flushpointer = text + 512;
406 for (i = 0;i < size;)
413 *cur++ = hexchar[(i >> 12) & 15];
414 *cur++ = hexchar[(i >> 8) & 15];
415 *cur++ = hexchar[(i >> 4) & 15];
416 *cur++ = hexchar[(i >> 0) & 15];
419 for (j = 0;j < 16;j++)
423 *cur++ = hexchar[(d[j] >> 4) & 15];
424 *cur++ = hexchar[(d[j] >> 0) & 15];
435 for (j = 0;j < 16;j++)
439 if (d[j] >= ' ' && d[j] <= 127)
449 if (cur >= flushpointer || i >= size)
458 void SZ_HexDumpToConsole(const sizebuf_t *buf)
460 Com_HexDumpToConsole(buf->data, buf->cursize);
464 //============================================================================
471 Parse a token out of a string
474 int COM_ParseToken(const char **datapointer, int returnnewline)
477 const char *data = *datapointer;
490 for (;*data <= ' ' && (*data != '\n' || !returnnewline);data++)
500 if (data[0] == '/' && data[1] == '/')
503 while (*data && *data != '\n')
507 else if (data[0] == '/' && data[1] == '*')
511 while (*data && (data[0] != '*' || data[1] != '/'))
516 else if (*data == '\"')
519 for (data++;*data != '\"';data++)
521 if (!*data || len >= (int)sizeof(com_token) - 1)
527 com_token[len++] = *data;
530 *datapointer = data+1;
533 else if (*data == '\n' || *data == '{' || *data == '}' || *data == ')' || *data == '(' || *data == ']' || *data == '[' || *data == '\'' || *data == ':' || *data == ',' || *data == ';')
536 com_token[len++] = *data++;
544 for (;*data > ' ' && *data != '{' && *data != '}' && *data != ')' && *data != '(' && *data != ']' && *data != '[' && *data != '\'' && *data != ':' && *data != ',' && *data != ';';data++)
546 if (len >= (int)sizeof(com_token) - 1)
552 com_token[len++] = *data;
562 COM_ParseTokenConsole
564 Parse a token out of a string, behaving like the qwcl console
567 int COM_ParseTokenConsole(const char **datapointer)
570 const char *data = *datapointer;
583 for (;*data <= ' ';data++)
593 if (*data == '/' && data[1] == '/')
596 while (*data && *data != '\n')
600 else if (*data == '\"')
603 for (data++;*data != '\"';data++)
605 if (!*data || len >= (int)sizeof(com_token) - 1)
611 com_token[len++] = *data;
614 *datapointer = data+1;
620 for (;*data > ' ';data++)
622 if (len >= (int)sizeof(com_token) - 1)
628 com_token[len++] = *data;
641 Returns the position (1 to argc-1) in the program's argument list
642 where the given parameter apears, or 0 if not present
645 int COM_CheckParm (const char *parm)
649 for (i=1 ; i<com_argc ; i++)
652 continue; // NEXTSTEP sometimes clears appkit vars.
653 if (!strcmp (parm,com_argv[i]))
664 Looks for the pop.txt file and verifies it.
665 Sets the "registered" cvar.
666 Immediately exits out if an alternate game was attempted to be started without
670 void COM_CheckRegistered (void)
672 Cvar_Set ("cmdline", com_cmdline);
674 if (!FS_FileExists("gfx/pop.lmp"))
677 Con_Print("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
679 Con_Print("Playing shareware version.\n");
683 Cvar_Set ("registered", "1");
684 Con_Print("Playing registered version.\n");
693 void COM_InitArgv (void)
696 // reconstitute the command line for the cmdline externally visible cvar
698 for (j = 0;(j < MAX_NUM_ARGVS) && (j < com_argc);j++)
701 while ((n < (CMDLINE_LENGTH - 1)) && com_argv[j][i])
702 com_cmdline[n++] = com_argv[j][i++];
703 if (n < (CMDLINE_LENGTH - 1))
704 com_cmdline[n++] = ' ';
711 void COM_InitGameType (void)
713 char name[MAX_OSPATH];
714 FS_StripExtension (com_argv[0], name, sizeof (name));
715 COM_ToLowerString (name, name, sizeof (name));
717 if (strstr(name, "transfusion"))
718 gamemode = GAME_TRANSFUSION;
719 else if (strstr(name, "nexuiz"))
720 gamemode = GAME_NEXUIZ;
721 else if (strstr(name, "nehahra"))
722 gamemode = GAME_NEHAHRA;
723 else if (strstr(name, "hipnotic"))
724 gamemode = GAME_HIPNOTIC;
725 else if (strstr(name, "rogue"))
726 gamemode = GAME_ROGUE;
727 else if (strstr(name, "gvb2"))
728 gamemode = GAME_GOODVSBAD2;
729 else if (strstr(name, "teu"))
731 else if (strstr(name, "battlemech"))
732 gamemode = GAME_BATTLEMECH;
733 else if (strstr(name, "zymotic"))
734 gamemode = GAME_ZYMOTIC;
735 else if (strstr(name, "fniggium"))
736 gamemode = GAME_FNIGGIUM;
737 else if (strstr(name, "setheral"))
738 gamemode = GAME_SETHERAL;
739 else if (strstr(name, "som"))
741 else if (strstr(name, "tenebrae"))
742 gamemode = GAME_TENEBRAE;
744 gamemode = GAME_NORMAL;
746 if (COM_CheckParm ("-transfusion"))
747 gamemode = GAME_TRANSFUSION;
748 else if (COM_CheckParm ("-nexuiz"))
749 gamemode = GAME_NEXUIZ;
750 else if (COM_CheckParm ("-nehahra"))
751 gamemode = GAME_NEHAHRA;
752 else if (COM_CheckParm ("-hipnotic"))
753 gamemode = GAME_HIPNOTIC;
754 else if (COM_CheckParm ("-rogue"))
755 gamemode = GAME_ROGUE;
756 else if (COM_CheckParm ("-quake"))
757 gamemode = GAME_NORMAL;
758 else if (COM_CheckParm ("-goodvsbad2"))
759 gamemode = GAME_GOODVSBAD2;
760 else if (COM_CheckParm ("-teu"))
762 else if (COM_CheckParm ("-battlemech"))
763 gamemode = GAME_BATTLEMECH;
764 else if (COM_CheckParm ("-zymotic"))
765 gamemode = GAME_ZYMOTIC;
766 else if (COM_CheckParm ("-fniggium"))
767 gamemode = GAME_FNIGGIUM;
768 else if (COM_CheckParm ("-setheral"))
769 gamemode = GAME_SETHERAL;
770 else if (COM_CheckParm ("-som"))
772 else if (COM_CheckParm ("-tenebrae"))
773 gamemode = GAME_TENEBRAE;
778 gamename = "DarkPlaces-Quake";
780 gamescreenshotname = "dp";
783 gamename = "Darkplaces-Hipnotic";
784 gamedirname = "hipnotic";
785 gamescreenshotname = "dp";
788 gamename = "Darkplaces-Rogue";
789 gamedirname = "rogue";
790 gamescreenshotname = "dp";
793 gamename = "DarkPlaces-Nehahra";
794 gamedirname = "nehahra";
795 gamescreenshotname = "dp";
799 gamedirname = "data";
800 gamescreenshotname = "nexuiz";
802 case GAME_TRANSFUSION:
803 gamename = "Transfusion";
804 gamedirname = "basetf";
805 gamescreenshotname = "transfusion";
807 case GAME_GOODVSBAD2:
808 gamename = "GoodVs.Bad2";
810 gamescreenshotname = "gvb2";
813 gamename = "TheEvilUnleashed";
814 gamedirname = "baseteu";
815 gamescreenshotname = "teu";
817 case GAME_BATTLEMECH:
818 gamename = "Battlemech";
819 gamedirname = "base";
820 gamescreenshotname = "battlemech";
823 gamename = "Zymotic";
824 gamedirname = "data";
825 gamescreenshotname = "zymotic";
828 gamename = "Fniggium";
829 gamedirname = "data";
830 gamescreenshotname = "fniggium";
833 gamename = "Setheral";
834 gamedirname = "data";
835 gamescreenshotname = "setheral";
838 gamename = "Son of Man";
839 gamedirname = "data";
840 gamescreenshotname = "som";
843 gamename = "DarkPlaces-Tenebrae";
844 gamedirname = "tenebrae";
845 gamescreenshotname = "dp";
848 Sys_Error("COM_InitGameType: unknown gamemode %i\n", gamemode);
854 extern void Mathlib_Init(void);
855 extern void FS_Init (void);
864 Cvar_RegisterVariable (®istered);
865 Cvar_RegisterVariable (&cmdline);
871 COM_CheckRegistered ();
879 does a varargs printf into a temp buffer, so I don't need to have
880 varargs versions of all text functions.
881 FIXME: make this buffer size safe someday
884 char *va(const char *format, ...)
887 // LordHavoc: now cycles through 8 buffers to avoid problems in most cases
888 static char string[8][1024], *s;
889 static int stringindex = 0;
891 s = string[stringindex];
892 stringindex = (stringindex + 1) & 7;
893 va_start (argptr, format);
894 vsnprintf (s, sizeof (string[0]), format,argptr);
901 //======================================
903 void COM_ToLowerString (const char *in, char *out, size_t size_out)
908 while (*in && size_out > 1)
910 if (*in >= 'A' && *in <= 'Z')
911 *out++ = *in++ + 'a' - 'A';
919 void COM_ToUpperString (const char *in, char *out, size_t size_out)
924 while (*in && size_out > 1)
926 if (*in >= 'a' && *in <= 'z')
927 *out++ = *in++ + 'A' - 'a';
935 int COM_StringBeginsWith(const char *s, const char *match)
937 for (;*s && *match;s++, match++)
943 int COM_ReadAndTokenizeLine(const char **text, char **argv, int maxargc, char *tokenbuf, int tokenbufsize, const char *commentprefix)
945 int argc, commentprefixlength;
949 tokenbufend = tokenbuf + tokenbufsize;
951 commentprefixlength = 0;
953 commentprefixlength = strlen(commentprefix);
954 while (*l && *l != '\n')
958 if (commentprefixlength && !strncmp(l, commentprefix, commentprefixlength))
960 while (*l && *l != '\n')
966 argv[argc++] = tokenbuf;
970 while (*l && *l != '"')
972 if (tokenbuf >= tokenbufend)
983 if (tokenbuf >= tokenbufend)
988 if (tokenbuf >= tokenbufend)
1001 // written by Elric, thanks Elric!
1002 char *SearchInfostring(const char *infostring, const char *key)
1004 static char value [256];
1006 size_t value_ind, key_ind;
1009 if (*infostring++ != '\\')
1024 if (c == '\\' || key_ind == sizeof (crt_key) - 1)
1026 crt_key[key_ind] = '\0';
1030 crt_key[key_ind++] = c;
1033 // If it's the key we are looking for, save it in "value"
1034 if (!strcmp(crt_key, key))
1040 if (c == '\0' || c == '\\' || value_ind == sizeof (value) - 1)
1042 value[value_ind] = '\0';
1046 value[value_ind++] = c;
1050 // Else, skip the value
1064 //========================================================
1065 // strlcat and strlcpy, from OpenBSD
1068 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
1070 * Permission to use, copy, modify, and distribute this software for any
1071 * purpose with or without fee is hereby granted, provided that the above
1072 * copyright notice and this permission notice appear in all copies.
1074 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
1075 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1076 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
1077 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1078 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1079 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
1080 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1083 /* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */
1084 /* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
1087 #ifndef HAVE_STRLCAT
1089 strlcat(char *dst, const char *src, size_t siz)
1091 register char *d = dst;
1092 register const char *s = src;
1093 register size_t n = siz;
1096 /* Find the end of dst and adjust bytes left but don't go past end */
1097 while (n-- != 0 && *d != '\0')
1103 return(dlen + strlen(s));
1104 while (*s != '\0') {
1113 return(dlen + (s - src)); /* count does not include NUL */
1115 #endif // #ifndef HAVE_STRLCAT
1118 #ifndef HAVE_STRLCPY
1120 strlcpy(char *dst, const char *src, size_t siz)
1122 register char *d = dst;
1123 register const char *s = src;
1124 register size_t n = siz;
1126 /* Copy as many bytes as will fit */
1127 if (n != 0 && --n != 0) {
1129 if ((*d++ = *s++) == 0)
1134 /* Not enough room in dst, add NUL and traverse rest of src */
1137 *d = '\0'; /* NUL-terminate dst */
1142 return(s - src - 1); /* count does not include NUL */
1145 #endif // #ifndef HAVE_STRLCPY