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] != '/')
556 // handle quoted strings specially
574 // parse single characters
575 if (c == '{' || c == '}' || c == ')' || c == '(' || c == ']' || c == '[' || c == '\'' || c == ':' || c == ',' || c == ';' || c == '\n')
580 *datapointer = data+1;
584 // parse a regular word
591 if (c == '{' || c == '}' || c == ')' || c == '(' || c == ']' || c == '[' || c == '\'' || c == ':' || c == ',' || c == ';')
605 Returns the position (1 to argc-1) in the program's argument list
606 where the given parameter apears, or 0 if not present
609 int COM_CheckParm (const char *parm)
613 for (i=1 ; i<com_argc ; i++)
616 continue; // NEXTSTEP sometimes clears appkit vars.
617 if (!strcmp (parm,com_argv[i]))
628 Looks for the pop.txt file and verifies it.
629 Sets the "registered" cvar.
630 Immediately exits out if an alternate game was attempted to be started without
634 void COM_CheckRegistered (void)
636 Cvar_Set ("cmdline", com_cmdline);
638 if (!FS_FileExists("gfx/pop.lmp"))
641 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
643 Con_Printf ("Playing shareware version.\n");
647 Cvar_Set ("registered", "1");
648 Con_Printf ("Playing registered version.\n");
657 void COM_InitArgv (void)
660 // reconstitute the command line for the cmdline externally visible cvar
662 for (j = 0;(j < MAX_NUM_ARGVS) && (j < com_argc);j++)
665 while ((n < (CMDLINE_LENGTH - 1)) && com_argv[j][i])
666 com_cmdline[n++] = com_argv[j][i++];
667 if (n < (CMDLINE_LENGTH - 1))
668 com_cmdline[n++] = ' ';
675 void COM_InitGameType (void)
677 char name[MAX_OSPATH];
678 FS_StripExtension (com_argv[0], name, sizeof (name));
679 COM_ToLowerString (name, name, sizeof (name));
681 if (strstr(name, "transfusion"))
682 gamemode = GAME_TRANSFUSION;
683 else if (strstr(name, "nexuiz"))
684 gamemode = GAME_NEXUIZ;
685 else if (strstr(name, "nehahra"))
686 gamemode = GAME_NEHAHRA;
687 else if (strstr(name, "hipnotic"))
688 gamemode = GAME_HIPNOTIC;
689 else if (strstr(name, "rogue"))
690 gamemode = GAME_ROGUE;
691 else if (strstr(name, "gvb2"))
692 gamemode = GAME_GOODVSBAD2;
693 else if (strstr(name, "teu"))
695 else if (strstr(name, "battlemech"))
696 gamemode = GAME_BATTLEMECH;
697 else if (strstr(name, "zymotic"))
698 gamemode = GAME_ZYMOTIC;
700 gamemode = GAME_NORMAL;
702 if (COM_CheckParm ("-transfusion"))
703 gamemode = GAME_TRANSFUSION;
704 else if (COM_CheckParm ("-nexuiz"))
705 gamemode = GAME_NEXUIZ;
706 else if (COM_CheckParm ("-nehahra"))
707 gamemode = GAME_NEHAHRA;
708 else if (COM_CheckParm ("-hipnotic"))
709 gamemode = GAME_HIPNOTIC;
710 else if (COM_CheckParm ("-rogue"))
711 gamemode = GAME_ROGUE;
712 else if (COM_CheckParm ("-quake"))
713 gamemode = GAME_NORMAL;
714 else if (COM_CheckParm ("-goodvsbad2"))
715 gamemode = GAME_GOODVSBAD2;
716 else if (COM_CheckParm ("-teu"))
718 else if (COM_CheckParm ("-battlemech"))
719 gamemode = GAME_BATTLEMECH;
720 else if (COM_CheckParm ("-zymotic"))
721 gamemode = GAME_ZYMOTIC;
726 gamename = "DarkPlaces-Quake";
730 gamename = "Darkplaces-Hipnotic";
731 gamedirname = "hipnotic";
734 gamename = "Darkplaces-Rogue";
735 gamedirname = "rogue";
738 gamename = "DarkPlaces-Nehahra";
739 gamedirname = "nehahra";
743 gamedirname = "data";
745 case GAME_TRANSFUSION:
746 gamename = "Transfusion";
747 gamedirname = "transfusion";
749 case GAME_GOODVSBAD2:
750 gamename = "GoodVs.Bad2";
754 gamename = "TheEvilUnleashed";
755 gamedirname = "baseteu";
757 case GAME_BATTLEMECH:
758 gamename = "Battlemech";
759 gamedirname = "base";
762 gamename = "Zymotic";
763 gamedirname = "data";
766 Sys_Error("COM_InitGameType: unknown gamemode %i\n", gamemode);
772 extern void Mathlib_Init(void);
773 extern void FS_Init (void);
782 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
783 qbyte swaptest[2] = {1,0};
785 // set the byte swapping variables in a portable manner
786 if ( *(short *)swaptest == 1)
788 BigShort = ShortSwap;
789 LittleShort = ShortNoSwap;
791 LittleLong = LongNoSwap;
792 BigFloat = FloatSwap;
793 LittleFloat = FloatNoSwap;
797 BigShort = ShortNoSwap;
798 LittleShort = ShortSwap;
799 BigLong = LongNoSwap;
800 LittleLong = LongSwap;
801 BigFloat = FloatNoSwap;
802 LittleFloat = FloatSwap;
806 Cvar_RegisterVariable (®istered);
807 Cvar_RegisterVariable (&cmdline);
813 COM_CheckRegistered ();
823 does a varargs printf into a temp buffer, so I don't need to have
824 varargs versions of all text functions.
825 FIXME: make this buffer size safe someday
828 char *va(const char *format, ...)
831 // LordHavoc: now cycles through 8 buffers to avoid problems in most cases
832 static char string[8][1024], *s;
833 static int stringindex = 0;
835 s = string[stringindex];
836 stringindex = (stringindex + 1) & 7;
837 va_start (argptr, format);
838 vsnprintf (s, sizeof (string[0]), format,argptr);
845 //======================================
847 void COM_ToLowerString (const char *in, char *out, size_t size_out)
852 while (*in && size_out > 1)
854 if (*in >= 'A' && *in <= 'Z')
855 *out++ = *in++ + 'a' - 'A';
863 void COM_ToUpperString (const char *in, char *out, size_t size_out)
868 while (*in && size_out > 1)
870 if (*in >= 'a' && *in <= 'z')
871 *out++ = *in++ + 'A' - 'a';
879 int COM_StringBeginsWith(const char *s, const char *match)
881 for (;*s && *match;s++, match++)
887 // written by Elric, thanks Elric!
888 char *SearchInfostring(const char *infostring, const char *key)
890 static char value [256];
892 size_t value_ind, key_ind;
895 if (*infostring++ != '\\')
910 if (c == '\\' || key_ind == sizeof (crt_key) - 1)
912 crt_key[key_ind] = '\0';
916 crt_key[key_ind++] = c;
919 // If it's the key we are looking for, save it in "value"
920 if (!strcmp(crt_key, key))
926 if (c == '\0' || c == '\\' || value_ind == sizeof (value) - 1)
928 value[value_ind] = '\0';
932 value[value_ind++] = c;
936 // Else, skip the value
950 //========================================================
951 // strlcat and strlcpy, from OpenBSD
954 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
956 * Permission to use, copy, modify, and distribute this software for any
957 * purpose with or without fee is hereby granted, provided that the above
958 * copyright notice and this permission notice appear in all copies.
960 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
961 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
962 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
963 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
964 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
965 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
966 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
969 /* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */
970 /* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
973 // Most (all?) BSDs already have them
974 #if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
977 strlcat(char *dst, const char *src, size_t siz)
979 register char *d = dst;
980 register const char *s = src;
981 register size_t n = siz;
984 /* Find the end of dst and adjust bytes left but don't go past end */
985 while (n-- != 0 && *d != '\0')
991 return(dlen + strlen(s));
1001 return(dlen + (s - src)); /* count does not include NUL */
1005 strlcpy(char *dst, const char *src, size_t siz)
1007 register char *d = dst;
1008 register const char *s = src;
1009 register size_t n = siz;
1011 /* Copy as many bytes as will fit */
1012 if (n != 0 && --n != 0) {
1014 if ((*d++ = *s++) == 0)
1019 /* Not enough room in dst, add NUL and traverse rest of src */
1022 *d = '\0'; /* NUL-terminate dst */
1027 return(s - src - 1); /* count does not include NUL */
1030 #endif // #if !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)