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 dpprotocol)
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 < 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 dpprotocol)
357 float MSG_ReadDPCoord (void)
359 return (signed short) MSG_ReadLittleShort();
363 float MSG_ReadCoord (void)
365 if (dpprotocol == DPPROTOCOL_VERSION2 || dpprotocol == DPPROTOCOL_VERSION3)
366 return (signed short) MSG_ReadLittleShort();
367 else if (dpprotocol == DPPROTOCOL_VERSION1)
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)
513 const char *data = *datapointer;
526 while ((c = *data) <= ' ')
538 if (c=='/' && data[1] == '/')
540 while (*data && *data != '\n')
546 // handle quoted strings specially
564 // parse single characters
565 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
570 *datapointer = data+1;
574 // parse a regular word
581 if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
595 Returns the position (1 to argc-1) in the program's argument list
596 where the given parameter apears, or 0 if not present
599 int COM_CheckParm (const char *parm)
603 for (i=1 ; i<com_argc ; i++)
606 continue; // NEXTSTEP sometimes clears appkit vars.
607 if (!strcmp (parm,com_argv[i]))
618 Looks for the pop.txt file and verifies it.
619 Sets the "registered" cvar.
620 Immediately exits out if an alternate game was attempted to be started without
624 void COM_CheckRegistered (void)
626 Cvar_Set ("cmdline", com_cmdline);
628 if (!FS_FileExists("gfx/pop.lmp"))
631 Con_Printf ("Playing shareware version, with modification.\nwarning: most mods require full quake data.\n");
633 Con_Printf ("Playing shareware version.\n");
637 Cvar_Set ("registered", "1");
638 Con_Printf ("Playing registered version.\n");
647 void COM_InitArgv (void)
650 // reconstitute the command line for the cmdline externally visible cvar
652 for (j = 0;(j < MAX_NUM_ARGVS) && (j < com_argc);j++)
655 while ((n < (CMDLINE_LENGTH - 1)) && com_argv[j][i])
656 com_cmdline[n++] = com_argv[j][i++];
657 if (n < (CMDLINE_LENGTH - 1))
658 com_cmdline[n++] = ' ';
665 void COM_InitGameType (void)
667 char name[MAX_OSPATH];
668 FS_StripExtension(com_argv[0], name);
669 COM_ToLowerString(name, name);
671 if (strstr(name, "transfusion"))
672 gamemode = GAME_TRANSFUSION;
673 else if (strstr(name, "nexuiz"))
674 gamemode = GAME_NEXUIZ;
675 else if (strstr(name, "nehahra"))
676 gamemode = GAME_NEHAHRA;
677 else if (strstr(name, "hipnotic"))
678 gamemode = GAME_HIPNOTIC;
679 else if (strstr(name, "rogue"))
680 gamemode = GAME_ROGUE;
682 gamemode = GAME_NORMAL;
684 if (COM_CheckParm ("-transfusion"))
685 gamemode = GAME_TRANSFUSION;
686 else if (COM_CheckParm ("-nexuiz"))
687 gamemode = GAME_NEXUIZ;
688 else if (COM_CheckParm ("-nehahra"))
689 gamemode = GAME_NEHAHRA;
690 else if (COM_CheckParm ("-hipnotic"))
691 gamemode = GAME_HIPNOTIC;
692 else if (COM_CheckParm ("-rogue"))
693 gamemode = GAME_ROGUE;
694 else if (COM_CheckParm ("-quake"))
695 gamemode = GAME_NORMAL;
700 gamename = "DarkPlaces-Quake";
704 gamename = "Darkplaces-Hipnotic";
705 gamedirname = "hipnotic";
708 gamename = "Darkplaces-Rogue";
709 gamedirname = "rogue";
712 gamename = "DarkPlaces-Nehahra";
713 gamedirname = "nehahra";
717 gamedirname = "data";
719 case GAME_TRANSFUSION:
720 gamename = "Transfusion";
721 gamedirname = "transfusion";
724 Sys_Error("COM_InitGameType: unknown gamemode %i\n", gamemode);
730 extern void Mathlib_Init(void);
731 extern void FS_Init (void);
740 #if !defined(ENDIAN_LITTLE) && !defined(ENDIAN_BIG)
741 qbyte swaptest[2] = {1,0};
743 // set the byte swapping variables in a portable manner
744 if ( *(short *)swaptest == 1)
746 BigShort = ShortSwap;
747 LittleShort = ShortNoSwap;
749 LittleLong = LongNoSwap;
750 BigFloat = FloatSwap;
751 LittleFloat = FloatNoSwap;
755 BigShort = ShortNoSwap;
756 LittleShort = ShortSwap;
757 BigLong = LongNoSwap;
758 LittleLong = LongSwap;
759 BigFloat = FloatNoSwap;
760 LittleFloat = FloatSwap;
764 Cvar_RegisterVariable (®istered);
765 Cvar_RegisterVariable (&cmdline);
771 COM_CheckRegistered ();
781 does a varargs printf into a temp buffer, so I don't need to have
782 varargs versions of all text functions.
783 FIXME: make this buffer size safe someday
786 char *va(const char *format, ...)
789 // LordHavoc: now cycles through 8 buffers to avoid problems in most cases
790 static char string[8][1024], *s;
791 static int stringindex = 0;
793 s = string[stringindex];
794 stringindex = (stringindex + 1) & 7;
795 va_start (argptr, format);
796 vsprintf (s, format,argptr);
803 //======================================
804 // LordHavoc: added these because they are useful
806 void COM_ToLowerString(const char *in, char *out)
810 if (*in >= 'A' && *in <= 'Z')
811 *out++ = *in++ + 'a' - 'A';
817 void COM_ToUpperString(const char *in, char *out)
821 if (*in >= 'a' && *in <= 'z')
822 *out++ = *in++ + 'A' - 'a';
828 int COM_StringBeginsWith(const char *s, const char *match)
830 for (;*s && *match;s++, match++)