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ngunix/engine/common.c

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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// common.c -- misc functions used in client and server
#include "quakedef.h"
#define NUM_SAFE_ARGVS 7
static char *largv[MAX_NUM_ARGVS + NUM_SAFE_ARGVS + 1];
static char *argvdummy = " ";
static char *safeargvs[NUM_SAFE_ARGVS] =
{"-stdvid", "-nolan", "-nosound", "-nocdaudio", "-nojoy", "-nomouse", "-dibonly"};
cvar_t *registered;
cvar_t *cmdline;
qboolean com_modified; // set true if using non-id files
qboolean proghack;
int static_registered = 1; // only for startup check, then set
qboolean msg_suppress_1 = 0;
void COM_InitFilesystem (void);
// if a packfile directory differs from this, it is assumed to be hacked
#define PAK0_COUNT 339
#define PAK0_CRC 32981
char com_token[1024];
int com_argc;
char **com_argv;
#define CMDLINE_LENGTH 256
char com_cmdline[CMDLINE_LENGTH];
qboolean standard_quake = true, rogue, hipnotic;
qboolean nouse = false; // 1999-10-29 +USE fix by Maddes
// this graphic needs to be in the pak file to use registered features
unsigned short pop[] =
{
0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000
,0x0000,0x0000,0x6600,0x0000,0x0000,0x0000,0x6600,0x0000
,0x0000,0x0066,0x0000,0x0000,0x0000,0x0000,0x0067,0x0000
,0x0000,0x6665,0x0000,0x0000,0x0000,0x0000,0x0065,0x6600
,0x0063,0x6561,0x0000,0x0000,0x0000,0x0000,0x0061,0x6563
,0x0064,0x6561,0x0000,0x0000,0x0000,0x0000,0x0061,0x6564
,0x0064,0x6564,0x0000,0x6469,0x6969,0x6400,0x0064,0x6564
,0x0063,0x6568,0x6200,0x0064,0x6864,0x0000,0x6268,0x6563
,0x0000,0x6567,0x6963,0x0064,0x6764,0x0063,0x6967,0x6500
,0x0000,0x6266,0x6769,0x6a68,0x6768,0x6a69,0x6766,0x6200
,0x0000,0x0062,0x6566,0x6666,0x6666,0x6666,0x6562,0x0000
,0x0000,0x0000,0x0062,0x6364,0x6664,0x6362,0x0000,0x0000
,0x0000,0x0000,0x0000,0x0062,0x6662,0x0000,0x0000,0x0000
,0x0000,0x0000,0x0000,0x0061,0x6661,0x0000,0x0000,0x0000
,0x0000,0x0000,0x0000,0x0000,0x6500,0x0000,0x0000,0x0000
,0x0000,0x0000,0x0000,0x0000,0x6400,0x0000,0x0000,0x0000
};
/*
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.
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
only used during filesystem initialization.
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.
The "cache directory" is only used during development to save network bandwidth, especially over ISDN / T1 lines. If there is a cache directory
specified, when a file is found by the normal search path, it will be mirrored
into the cache directory, then opened there.
FIXME:
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.
*/
//============================================================================
// ClearLink is used for new headnodes
void ClearLink (link_t *l)
{
l->prev = l->next = l;
}
void RemoveLink (link_t *l)
{
l->next->prev = l->prev;
l->prev->next = l->next;
}
void InsertLinkBefore (link_t *l, link_t *before)
{
l->next = before;
l->prev = before->prev;
l->prev->next = l;
l->next->prev = l;
}
void InsertLinkAfter (link_t *l, link_t *after)
{
l->next = after->next;
l->prev = after;
l->prev->next = l;
l->next->prev = l;
}
/*
============================================================================
LIBRARY REPLACEMENT FUNCTIONS
============================================================================
*/
void Q_memset (void *dest, int fill, int count)
{
int i;
if ( (((long)dest | count) & 3) == 0)
{
count >>= 2;
fill = fill | (fill<<8) | (fill<<16) | (fill<<24);
for (i=0 ; i<count ; i++)
((int *)dest)[i] = fill;
}
else
for (i=0 ; i<count ; i++)
((byte *)dest)[i] = fill;
}
void Q_memcpy (void *dest, void *src, int count)
{
int i;
if (( ( (long)dest | (long)src | count) & 3) == 0 )
{
count>>=2;
for (i=0 ; i<count ; i++)
((int *)dest)[i] = ((int *)src)[i];
}
else
for (i=0 ; i<count ; i++)
((byte *)dest)[i] = ((byte *)src)[i];
}
// 2001-10-25 Replaced Quake functions with ANSI functions by Maddes start
/*
int Q_memcmp (void *m1, void *m2, int count)
{
while(count)
{
count--;
if (((byte *)m1)[count] != ((byte *)m2)[count])
return -1;
}
return 0;
}
void Q_strcpy (char *dest, char *src)
{
while (*src)
{
*dest++ = *src++;
}
*dest++ = 0;
}
void Q_strncpy (char *dest, char *src, int count)
{
while (*src && count--)
{
*dest++ = *src++;
}
if (count)
*dest++ = 0;
}
int Q_strlen (char *str)
{
int count;
count = 0;
while (str[count])
count++;
return count;
}
char *Q_strrchr(char *s, char c)
{
int len = strlen(s);
s += len;
while (len--)
if (*--s == c) return s;
return 0;
}
void Q_strcat (char *dest, char *src)
{
dest += strlen(dest);
strcpy (dest, src);
}
int Q_strcmp (char *s1, char *s2)
{
while (1)
{
if (*s1 != *s2)
return -1; // strings not equal
if (!*s1)
return 0; // strings are equal
s1++;
s2++;
}
return -1;
}
int Q_strncmp (char *s1, char *s2, int count)
{
while (1)
{
if (!count--)
return 0;
if (*s1 != *s2)
return -1; // strings not equal
if (!*s1)
return 0; // strings are equal
s1++;
s2++;
}
return -1;
}
*/
// 2001-10-25 Replaced Quake functions with ANSI functions by Maddes end
int Q_strncasecmp (char *s1, char *s2, int n)
{
int c1, c2;
while (1)
{
c1 = *s1++;
c2 = *s2++;
if (!n--)
return 0; // strings are equal until end point
if (c1 != c2)
{
if (c1 >= 'a' && c1 <= 'z')
c1 -= ('a' - 'A');
if (c2 >= 'a' && c2 <= 'z')
c2 -= ('a' - 'A');
if (c1 != c2)
return -1; // strings not equal
}
if (!c1)
return 0; // strings are equal
// s1++;
// s2++;
}
return -1;
}
int Q_strcasecmp (char *s1, char *s2)
{
// 2001-10-25 Q_strcasecmp fix by Maddes start
// return Q_strncasecmp (s1, s2, 99999);
int len1, len2;
len1 = strlen(s1);
len2 = strlen(s2);
if (len2 > len1)
{
len1 = len2;
}
return Q_strncasecmp (s1, s2, len1);
// 2001-10-25 Q_strcasecmp fix by Maddes end
}
int Q_atoi (char *str)
{
int val;
int sign;
int c;
if (*str == '-')
{
sign = -1;
str++;
}
else
sign = 1;
val = 0;
//
// check for hex
//
if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
{
str += 2;
while (1)
{
c = *str++;
if (c >= '0' && c <= '9')
val = (val<<4) + c - '0';
else if (c >= 'a' && c <= 'f')
val = (val<<4) + c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
val = (val<<4) + c - 'A' + 10;
else
return val*sign;
}
}
//
// check for character
//
if (str[0] == '\'')
{
return sign * str[1];
}
//
// assume decimal
//
while (1)
{
c = *str++;
if (c <'0' || c > '9')
return val*sign;
val = val*10 + c - '0';
}
return 0;
}
float Q_atof (char *str)
{
double val;
int sign;
int c;
int decimal, total;
// 1999-12-27 ATOF problems with leading spaces fix by Maddes start
while ((*str) && (*str<=' '))
{
str++;
}
// 1999-12-27 ATOF problems with leading spaces fix by Maddes end
if (*str == '-')
{
sign = -1;
str++;
}
else
sign = 1;
val = 0;
//
// check for hex
//
if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X') )
{
str += 2;
while (1)
{
c = *str++;
if (c >= '0' && c <= '9')
val = (val*16) + c - '0';
else if (c >= 'a' && c <= 'f')
val = (val*16) + c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
val = (val*16) + c - 'A' + 10;
else
return val*sign;
}
}
//
// check for character
//
if (str[0] == '\'')
{
return sign * str[1];
}
//
// assume decimal
//
decimal = -1;
total = 0;
while (1)
{
c = *str++;
if (c == '.')
{
decimal = total;
continue;
}
if (c <'0' || c > '9')
break;
val = val*10 + c - '0';
total++;
}
if (decimal == -1)
return val*sign;
while (total > decimal)
{
val /= 10;
total--;
}
return val*sign;
}
/*
============================================================================
BYTE ORDER FUNCTIONS
============================================================================
*/
qboolean bigendien;
short (*BigShort) (short l);
short (*LittleShort) (short l);
int (*BigLong) (int l);
int (*LittleLong) (int l);
float (*BigFloat) (float l);
float (*LittleFloat) (float l);
short ShortSwap (short l)
{
byte b1,b2;
b1 = l&255;
b2 = (l>>8)&255;
return (b1<<8) + b2;
}
short ShortNoSwap (short l)
{
return l;
}
int LongSwap (int l)
{
byte b1,b2,b3,b4;
b1 = l&255;
b2 = (l>>8)&255;
b3 = (l>>16)&255;
b4 = (l>>24)&255;
return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
}
int LongNoSwap (int l)
{
return l;
}
float FloatSwap (float f)
{
union
{
float f;
byte b[4];
} dat1, dat2;
dat1.f = f;
dat2.b[0] = dat1.b[3];
dat2.b[1] = dat1.b[2];
dat2.b[2] = dat1.b[1];
dat2.b[3] = dat1.b[0];
return dat2.f;
}
float FloatNoSwap (float f)
{
return f;
}
/*
==============================================================================
MESSAGE IO FUNCTIONS
Handles byte ordering and avoids alignment errors
==============================================================================
*/
//
// writing functions
//
void MSG_WriteChar (sizebuf_t *sb, int c)
{
byte *buf;
#ifdef PARANOID
if (c < -128 || c > 127)
Sys_Error ("MSG_WriteChar: range error");
#endif
buf = SZ_GetSpace (sb, 1);
buf[0] = c;
}
void MSG_WriteByte (sizebuf_t *sb, int c)
{
byte *buf;
#ifdef PARANOID
if (c < 0 || c > 255)
Sys_Error ("MSG_WriteByte: range error");
#endif
buf = SZ_GetSpace (sb, 1);
buf[0] = c;
}
void MSG_WriteShort (sizebuf_t *sb, int c)
{
byte *buf;
#ifdef PARANOID
if (c < ((short)0x8000) || c > (short)0x7fff)
Sys_Error ("MSG_WriteShort: range error");
#endif
buf = SZ_GetSpace (sb, 2);
buf[0] = c&0xff;
buf[1] = c>>8;
}
void MSG_WriteLong (sizebuf_t *sb, int c)
{
byte *buf;
buf = SZ_GetSpace (sb, 4);
buf[0] = c&0xff;
buf[1] = (c>>8)&0xff;
buf[2] = (c>>16)&0xff;
buf[3] = c>>24;
}
void MSG_WriteFloat (sizebuf_t *sb, float f)
{
union
{
float f;
int l;
} dat;
dat.f = f;
dat.l = LittleLong (dat.l);
SZ_Write (sb, &dat.l, 4);
}
void MSG_WriteString (sizebuf_t *sb, char *s)
{
if (!s)
SZ_Write (sb, "", 1);
else
SZ_Write (sb, s, strlen(s)+1);
}
void MSG_WriteCoord (sizebuf_t *sb, float f)
{
MSG_WriteShort (sb, (int)(f*8));
}
void MSG_WriteAngle (sizebuf_t *sb, float f)
{
MSG_WriteByte (sb, ((int)f*256/360) & 255);
}
//
// reading functions
//
int msg_readcount;
qboolean msg_badread;
void MSG_BeginReading (void)
{
msg_readcount = 0;
msg_badread = false;
}
// returns -1 and sets msg_badread if no more characters are available
int MSG_ReadChar (void)
{
int c;
if (msg_readcount+1 > net_message.cursize)
{
msg_badread = true;
return -1;
}
c = (signed char)net_message.data[msg_readcount];
msg_readcount++;
return c;
}
int MSG_ReadByte (void)
{
int c;
if (msg_readcount+1 > net_message.cursize)
{
msg_badread = true;
return -1;
}
c = (unsigned char)net_message.data[msg_readcount];
msg_readcount++;
return c;
}
int MSG_ReadShort (void)
{
int c;
if (msg_readcount+2 > net_message.cursize)
{
msg_badread = true;
return -1;
}
c = (short)(net_message.data[msg_readcount]
+ (net_message.data[msg_readcount+1]<<8));
msg_readcount += 2;
return c;
}
int MSG_ReadLong (void)
{
int c;
if (msg_readcount+4 > net_message.cursize)
{
msg_badread = true;
return -1;
}
c = net_message.data[msg_readcount]
+ (net_message.data[msg_readcount+1]<<8)
+ (net_message.data[msg_readcount+2]<<16)
+ (net_message.data[msg_readcount+3]<<24);
msg_readcount += 4;
return c;
}
float MSG_ReadFloat (void)
{
union
{
byte b[4];
float f;
int l;
} dat;
dat.b[0] = net_message.data[msg_readcount];
dat.b[1] = net_message.data[msg_readcount+1];
dat.b[2] = net_message.data[msg_readcount+2];
dat.b[3] = net_message.data[msg_readcount+3];
msg_readcount += 4;
dat.l = LittleLong (dat.l);
return dat.f;
}
char *MSG_ReadString (void)
{
static char string[2048];
int l,c;
l = 0;
do
{
c = MSG_ReadChar ();
if (c == -1 || c == 0)
break;
string[l] = c;
l++;
} while (l < sizeof(string)-1);
string[l] = 0;
return string;
}
float MSG_ReadCoord (void)
{
return MSG_ReadShort() * (1.0/8);
}
float MSG_ReadAngle (void)
{
return MSG_ReadChar() * (360.0/256);
}
//===========================================================================
void SZ_Alloc (sizebuf_t *buf, int startsize)
{
if (startsize < 256)
startsize = 256;
buf->data = Hunk_AllocName (startsize, "sizebuf");
buf->maxsize = startsize;
buf->cursize = 0;
}
void SZ_Free (sizebuf_t *buf)
{
// Z_Free (mainzone, buf->data); // 2001-09-20 Enhanced zone handling by Maddes
// buf->data = NULL;
// buf->maxsize = 0;
buf->cursize = 0;
}
void SZ_Clear (sizebuf_t *buf)
{
buf->cursize = 0;
}
void *SZ_GetSpace (sizebuf_t *buf, int length)
{
void *data;
if (buf->cursize + length > buf->maxsize)
{
if (!buf->allowoverflow)
Sys_Error ("SZ_GetSpace: overflow without allowoverflow set");
if (length > buf->maxsize)
Sys_Error ("SZ_GetSpace: %i is > full buffer size", length);
buf->overflowed = true;
Con_Printf ("SZ_GetSpace: overflow");
SZ_Clear (buf);
}
data = buf->data + buf->cursize;
buf->cursize += length;
return data;
}
void SZ_Write (sizebuf_t *buf, void *data, int length)
{
Q_memcpy (SZ_GetSpace(buf,length),data,length);
}
void SZ_Print (sizebuf_t *buf, char *data)
{
int len;
len = strlen(data)+1;
// byte * cast to keep VC++ happy
if (buf->data[buf->cursize-1])
Q_memcpy ((byte *)SZ_GetSpace(buf, len),data,len); // no trailing 0
else
Q_memcpy ((byte *)SZ_GetSpace(buf, len-1)-1,data,len); // write over trailing 0
}
//============================================================================
/*
============
COM_SkipPath
============
*/
char *COM_SkipPath (char *pathname)
{
char *last;
last = pathname;
while (*pathname)
{
if (*pathname=='/')
last = pathname+1;
pathname++;
}
return last;
}
/*
============
COM_StripExtension
============
*/
void COM_StripExtension (char *in, char *out)
{
while (*in && *in != '.')
*out++ = *in++;
*out = 0;
}
/*
============
COM_FileExtension
============
*/
char *COM_FileExtension (char *in)
{
static char exten[8];
int i;
while (*in && *in != '.')
in++;
if (!*in)
return "";
in++;
for (i=0 ; i<7 && *in ; i++,in++)
exten[i] = *in;
exten[i] = 0;
return exten;
}
/*
============
COM_FileBase
============
*/
void COM_FileBase (char *in, char *out)
{
char *s, *s2;
s = in + strlen(in) - 1;
while (s != in && *s != '.')
s--;
for (s2 = s ; *s2 && *s2 != '/' ; s2--)
;
if (s-s2 < 2)
strcpy (out,"?model?");
else
{
s--;
strncpy (out,s2+1, s-s2);
out[s-s2] = 0;
}
}
/*
==================
COM_DefaultExtension
==================
*/
void COM_DefaultExtension (char *path, char *extension)
{
char *src;
//
// if path doesn't have a .EXT, append extension
// (extension should include the .)
//
src = path + strlen(path) - 1;
while (*src != '/' && src != path)
{
if (*src == '.')
return; // it has an extension
src--;
}
strcat (path, extension);
}
/*
==============
COM_Parse
Parse a token out of a string
==============
*/
char *COM_Parse (char *data)
{
int c;
int len;
len = 0;
com_token[0] = 0;
if (!data)
return NULL;
// skip whitespace
skipwhite:
while ( (c = *data) <= ' ')
{
if (c == 0)
return NULL; // end of file;
data++;
}
// skip // comments
if (c=='/' && data[1] == '/')
{
while (*data && *data != '\n')
data++;
goto skipwhite;
}
// handle quoted strings specially
if (c == '\"')
{
data++;
while (1)
{
c = *data++;
if (c=='\"' || !c)
{
com_token[len] = 0;
return data;
}
com_token[len] = c;
len++;
}
}
// parse single characters
if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
{
com_token[len] = c;
len++;
com_token[len] = 0;
return data+1;
}
// parse a regular word
do
{
com_token[len] = c;
data++;
len++;
c = *data;
if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
break;
} while (c>32);
com_token[len] = 0;
return data;
}
/*
================
COM_CheckParm
Returns the position (1 to argc-1) in the program's argument list
where the given parameter apears, or 0 if not present
================
*/
int COM_CheckParm (char *parm)
{
int i;
for (i=1 ; i<com_argc ; i++)
{
if (!com_argv[i])
continue; // NEXTSTEP sometimes clears appkit vars.
if (!strcmp (parm,com_argv[i]))
return i;
}
return 0;
}
// 1999-12-23 Multiple "-data" parameters by Maddes start
/*
================
COM_CheckParmOffset
Returns the position (1 to argc-1) in the program's argument list
where the given parameter apears, or 0 if not present
================
*/
int COM_CheckParmOffset (char *parm, int offset)
{
int i;
for (i=offset ; i<com_argc ; i++)
{
if (!com_argv[i])
continue; // NEXTSTEP sometimes clears appkit vars.
if (!strcmp (parm,com_argv[i]))
return i;
}
return 0;
}
// 1999-12-23 Multiple "-data" parameters by Maddes end
/*
================
COM_CheckRegistered
Looks for the pop.txt file and verifies it.
Sets the "registered" cvar.
Immediately exits out if an alternate game was attempted to be started without
being registered.
================
*/
void COM_CheckRegistered (void)
{
int h;
unsigned short check[128];
int i;
COM_OpenFile("gfx/pop.lmp", &h, NULL); // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
static_registered = 0;
if (h == -1)
{
#if WINDED
Sys_Error ("This dedicated server requires a full registered copy of Quake");
#endif
Con_Printf ("Playing shareware version.\n");
if (com_modified)
Sys_Error ("You must have the registered version to use modified games");
return;
}
Sys_FileRead (h, check, sizeof(check));
COM_CloseFile (h);
for (i=0 ; i<128 ; i++)
if (pop[i] != (unsigned short)BigShort (check[i]))
Sys_Error ("Corrupted data file.");
Cvar_Set (cmdline, com_cmdline);
Cvar_Set (registered, "1");
static_registered = 1;
Con_Printf ("Playing registered version.\n");
}
void COM_Path_f (void);
/*
================
COM_InitArgv
================
*/
void COM_InitArgv (int argc, char **argv)
{
qboolean safe;
int i, j, n;
// reconstitute the command line for the cmdline externally visible cvar
n = 0;
for (j=0 ; (j<MAX_NUM_ARGVS) && (j< argc) ; j++)
{
i = 0;
while ((n < (CMDLINE_LENGTH - 1)) && argv[j][i])
{
com_cmdline[n++] = argv[j][i++];
}
if (n < (CMDLINE_LENGTH - 1))
com_cmdline[n++] = ' ';
else
break;
}
com_cmdline[n] = 0;
safe = false;
for (com_argc=0 ; (com_argc<MAX_NUM_ARGVS) && (com_argc < argc) ;
com_argc++)
{
largv[com_argc] = argv[com_argc];
if (!strcmp ("-safe", argv[com_argc]))
safe = true;
}
if (safe)
{
// force all the safe-mode switches. Note that we reserved extra space in
// case we need to add these, so we don't need an overflow check
for (i=0 ; i<NUM_SAFE_ARGVS ; i++)
{
largv[com_argc] = safeargvs[i];
com_argc++;
}
}
largv[com_argc] = argvdummy;
com_argv = largv;
if (COM_CheckParm ("-rogue"))
{
rogue = true;
standard_quake = false;
}
if ((COM_CheckParm ("-hipnotic")))
{
hipnotic = true;
standard_quake = false;
}
// 1999-10-29 +USE fix by Maddes start
if (COM_CheckParm ("-nouse"))
{
nouse = true;
}
// 1999-10-29 +USE fix by Maddes end
}
// 2001-09-18 New cvar system by Maddes (Init) start
/*
================
COM_Init_Cvars
================
*/
void COM_Init_Cvars (void)
{
registered = Cvar_Get ("registered", "0", CVAR_ORIGINAL);
cmdline = Cvar_Get ("cmdline", "0", CVAR_NOTIFY|CVAR_SERVERINFO|CVAR_ORIGINAL);
Sys_Printf ("COM_Init_Cvars\n");
}
// 2001-09-18 New cvar system by Maddes (Init) end
/*
================
COM_Init
================
*/
void COM_Init (char *basedir)
{
byte swaptest[2] = {1,0};
// set the byte swapping variables in a portable manner
if ( *(short *)swaptest == 1)
{
bigendien = false;
BigShort = ShortSwap;
LittleShort = ShortNoSwap;
BigLong = LongSwap;
LittleLong = LongNoSwap;
BigFloat = FloatSwap;
LittleFloat = FloatNoSwap;
}
else
{
bigendien = true;
BigShort = ShortNoSwap;
LittleShort = ShortSwap;
BigLong = LongNoSwap;
LittleLong = LongSwap;
BigFloat = FloatNoSwap;
LittleFloat = FloatSwap;
}
// 2001-09-18 New cvar system by Maddes (Init) start
/*
registered = Cvar_Get ("registered", "0", CVAR_ORIGINAL);
cmdline = Cvar_Get ("cmdline", "0", CVAR_NOTIFY|CVAR_SERVERINFO|CVAR_ORIGINAL);
*/
// 2001-09-18 New cvar system by Maddes (Init) end
Cmd_AddCommand ("path", COM_Path_f);
COM_InitFilesystem ();
// COM_CheckRegistered ();
Cvar_Set (cmdline, com_cmdline);
Cvar_Set (registered, "1");
static_registered = 1; // CRACKED!!!!!
}
/*
============
va
does a varargs printf into a temp buffer, so I don't need to have
varargs versions of all text functions.
FIXME: make this buffer size safe someday
============
*/
char *va(char *format, ...)
{
va_list argptr;
static char string[1024];
va_start (argptr, format);
vsprintf (string, format,argptr);
va_end (argptr);
return string;
}
/// just for debugging
int memsearch (byte *start, int count, int search)
{
int i;
for (i=0 ; i<count ; i++)
if (start[i] == search)
return i;
return -1;
}
/*
=============================================================================
QUAKE FILESYSTEM
=============================================================================
*/
int com_filesize;
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes start
/*
//
// in memory
//
typedef struct
{
char name[MAX_QPATH];
int filepos, filelen;
} packfile_t;
typedef struct pack_s
{
char filename[MAX_OSPATH];
int handle;
int numfiles;
packfile_t *files;
} pack_t;
//
// on disk
//
typedef struct
{
char name[56];
int filepos, filelen;
} dpackfile_t;
typedef struct
{
char id[4];
int dirofs;
int dirlen;
} dpackheader_t;
#define MAX_FILES_IN_PACK 2048
*/
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes end
char com_cachedir[MAX_OSPATH];
char com_gamedir[MAX_OSPATH];
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes start
/*
typedef struct searchpath_s
{
char filename[MAX_OSPATH];
pack_t *pack; // only one of filename / pack will be used
struct searchpath_s *next;
} searchpath_t;
*/
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes end
searchpath_t *com_searchpaths;
/*
============
COM_Path_f
============
*/
void COM_Path_f (void)
{
searchpath_t *s;
Con_Printf ("Current search path:\n");
for (s=com_searchpaths ; s ; s=s->next)
{
if (s->pack)
{
Con_Printf ("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
}
else
Con_Printf ("%s\n", s->filename);
}
}
/*
============
COM_WriteFile
The filename will be prefixed by the current game directory
============
*/
void COM_WriteFile (char *filename, void *data, int len)
{
int handle;
char name[MAX_OSPATH];
sprintf (name, "%s/%s", com_gamedir, filename);
handle = Sys_FileOpenWrite (name);
if (handle == -1)
{
Sys_Printf ("COM_WriteFile: failed on %s\n", name);
return;
}
Sys_Printf ("COM_WriteFile: %s\n", name);
Sys_FileWrite (handle, data, len);
Sys_FileClose (handle);
}
/*
============
COM_CreatePath
Only used for CopyFile
============
*/
void COM_CreatePath (char *path)
{
char *ofs;
for (ofs = path+1 ; *ofs ; ofs++)
{
if (*ofs == '/')
{ // create the directory
*ofs = 0;
Sys_mkdir (path);
*ofs = '/';
}
}
}
/*
===========
COM_CopyFile
Copies a file over from the net to the local cache, creating any directories
needed. This is for the convenience of developers using ISDN from home.
===========
*/
void COM_CopyFile (char *netpath, char *cachepath)
{
int in, out;
int remaining, count;
char buf[4096];
remaining = Sys_FileOpenRead (netpath, &in);
COM_CreatePath (cachepath); // create directories up to the cache file
out = Sys_FileOpenWrite (cachepath);
while (remaining)
{
if (remaining < sizeof(buf))
count = remaining;
else
count = sizeof(buf);
Sys_FileRead (in, buf, count);
Sys_FileWrite (out, buf, count);
remaining -= count;
}
Sys_FileClose (in);
Sys_FileClose (out);
}
/*
===========
COM_FindFile
Finds the file in the search path.
Sets com_filesize and one of handle or file
===========
*/
int COM_FindFile (char *filename, int *handle, FILE **file, searchpath_t **foundpath) // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
{
searchpath_t *search;
char netpath[MAX_OSPATH];
char cachepath[MAX_OSPATH];
pack_t *pak;
int i;
int findtime, cachetime;
if (file && handle)
Sys_Error ("COM_FindFile: both handle and file set");
if (!file && !handle)
Sys_Error ("COM_FindFile: neither handle or file set");
//
// search through the path, one element at a time
//
search = com_searchpaths;
if (proghack)
{ // gross hack to use quake 1 progs with quake 2 maps
if (!strcmp(filename, "progs.dat"))
search = search->next;
}
for ( ; search ; search = search->next)
{
// is the element a pak file?
if (search->pack)
{
// look through all the pak file elements
pak = search->pack;
for (i=0 ; i<pak->numfiles ; i++)
if (!strcmp (pak->files[i].name, filename))
{ // found it!
Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
if (handle)
{
*handle = pak->handle;
Sys_FileSeek (pak->handle, pak->files[i].filepos);
}
else
{ // open a new file on the pakfile
*file = fopen (pak->filename, "rb");
if (*file)
fseek (*file, pak->files[i].filepos, SEEK_SET);
}
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes start
if ( foundpath )
{
*foundpath = search;
}
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes end
com_filesize = pak->files[i].filelen;
return com_filesize;
}
}
else
{
// check a file in the directory tree
if (!static_registered)
{ // if not a registered version, don't ever go beyond base
if ( strchr (filename, '/') || strchr (filename,'\\'))
continue;
}
sprintf (netpath, "%s/%s",search->filename, filename);
findtime = Sys_FileTime (netpath);
if (findtime == -1)
continue;
// see if the file needs to be updated in the cache
if (!com_cachedir[0])
strcpy (cachepath, netpath);
else
{
#if defined(_WIN32)
if ((strlen(netpath) < 2) || (netpath[1] != ':'))
sprintf (cachepath,"%s%s", com_cachedir, netpath);
else
sprintf (cachepath,"%s%s", com_cachedir, netpath+2);
#else
sprintf (cachepath,"%s%s", com_cachedir, netpath);
#endif
cachetime = Sys_FileTime (cachepath);
if (cachetime < findtime)
COM_CopyFile (netpath, cachepath);
strcpy (netpath, cachepath);
}
Sys_Printf ("FindFile: %s\n",netpath);
com_filesize = Sys_FileOpenRead (netpath, &i);
if (handle)
*handle = i;
else
{
Sys_FileClose (i);
*file = fopen (netpath, "rb");
}
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes start
if ( foundpath )
{
*foundpath = search;
}
// 2001-09-12 Returning from which searchpath a file was loaded by Maddes end
return com_filesize;
}
}
Sys_Printf ("FindFile: can't find %s\n", filename);
if (handle)
*handle = -1;
else
*file = NULL;
com_filesize = -1;
return -1;
}
/*
===========
COM_OpenFile
filename never has a leading slash, but may contain directory walks
returns a handle and a length
it may actually be inside a pak file
===========
*/
int COM_OpenFile (char *filename, int *handle, searchpath_t **foundpath) // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
{
return COM_FindFile (filename, handle, NULL, foundpath); // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
}
int COM_OpenFileOld (char *filename, int *handle)
{
return COM_FindFile (filename, handle, NULL, 0);
}
/*
===========
COM_FOpenFile
If the requested file is inside a packfile, a new FILE * will be opened
into the file.
===========
*/
int COM_FOpenFile (char *filename, FILE **file, searchpath_t **foundpath) // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
{
return COM_FindFile (filename, NULL, file, foundpath); // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
}
/*
============
COM_CloseFile
If it is a pak file handle, don't really close it
============
*/
void COM_CloseFile (int h)
{
searchpath_t *s;
for (s = com_searchpaths ; s ; s=s->next)
if (s->pack && s->pack->handle == h)
return;
Sys_FileClose (h);
}
/*
============
COM_LoadFile
Filename are reletive to the quake directory.
always appends a 0 byte.
============
*/
cache_user_t *loadcache;
byte *loadbuf;
int loadsize;
// 2001-09-12 Returning information about loaded file by Maddes start
//byte *COM_LoadFile (char *path, int usehunk)
loadedfile_t *COM_LoadFile (char *path, int usehunk)
// 2001-09-12 Returning information about loaded file by Maddes end
{
int h;
byte *buf;
char base[32];
int len;
// 2001-09-12 Returning information about loaded file by Maddes start
int bufsize;
loadedfile_t *fileinfo;
searchpath_t *foundpath; // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
// 2001-09-12 Returning information about loaded file by Maddes end
buf = NULL; // quiet compiler warning
// look for it in the filesystem or pack files
len = COM_OpenFile (path, &h, &foundpath); // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
if (h == -1)
return NULL;
bufsize = ((len+1+3)&~3) + sizeof(struct loadedfile_s); // 2001-09-12 Returning information about loaded file by Maddes
// extract the filename base name for hunk tag
// 2001-12-28 Use full filename for hunk allocation by Maddes start
// COM_FileBase (path, base);
strncpy(base, COM_SkipPath(path), sizeof(base));
base[sizeof(base)-1] = 0;
// 2001-12-28 Use full filename for hunk allocation by Maddes end
if (usehunk == 1)
// 2001-09-12 Returning information about loaded file by Maddes start
// buf = Hunk_AllocName (len+1, base);
buf = Hunk_AllocName (bufsize, base);
// 2001-09-12 Returning information about loaded file by Maddes end
else if (usehunk == 2)
// 2001-09-12 Returning information about loaded file by Maddes start
// buf = Hunk_TempAlloc (len+1);
buf = Hunk_TempAlloc (bufsize);
// 2001-09-12 Returning information about loaded file by Maddes end
else if (usehunk == 0)
// 2001-09-12 Returning information about loaded file by Maddes start
// buf = Z_Malloc (mainzone, len+1); // 2001-09-20 Enhanced zone handling by Maddes
buf = Z_Malloc (mainzone, bufsize); // 2001-09-20 Enhanced zone handling by Maddes
// 2001-09-12 Returning information about loaded file by Maddes end
else if (usehunk == 3)
// 2001-09-12 Returning information about loaded file by Maddes start
// buf = Cache_Alloc (loadcache, len+1, base);
buf = Cache_Alloc (loadcache, bufsize, base);
// 2001-09-12 Returning information about loaded file by Maddes end
else if (usehunk == 4)
{
// 2001-09-12 Returning information about loaded file by Maddes start
/*
if (len+1 > loadsize)
buf = Hunk_TempAlloc (len+1);
*/
if (bufsize > loadsize)
buf = Hunk_TempAlloc (bufsize);
// 2001-09-12 Returning information about loaded file by Maddes end
else
buf = loadbuf;
}
else
Sys_Error ("COM_LoadFile: bad usehunk");
if (!buf)
Sys_Error ("COM_LoadFile: not enough space for %s", path);
((byte *)buf)[len] = 0;
// 2001-09-12 Returning information about loaded file by Maddes start
fileinfo = (loadedfile_t *)(buf + ((len+1+3)&~3));
fileinfo->data = buf;
fileinfo->filelen = len;
fileinfo->path = foundpath; // 2001-09-12 Returning from which searchpath a file was loaded by Maddes
// 2001-09-12 Returning information about loaded file by Maddes end
Draw_BeginDisc ();
Sys_FileRead (h, buf, len);
COM_CloseFile (h);
Draw_EndDisc ();
// 2001-09-12 Returning information about loaded file by Maddes start
// return buf;
return fileinfo;
// 2001-09-12 Returning information about loaded file by Maddes end
}
// 2001-09-12 Returning information about loaded file by Maddes start
//byte *COM_LoadHunkFile (char *path)
loadedfile_t *COM_LoadHunkFile (char *path)
// 2001-09-12 Returning information about loaded file by Maddes end
{
return COM_LoadFile (path, 1);
}
byte *COM_LoadFileOld (char *path, int usehunk)
{
int h;
byte *buf;
char base[32];
int len;
buf = NULL; // quiet compiler warning
// look for it in the filesystem or pack files
len = COM_OpenFileOld (path, &h);
if (h == -1)
return NULL;
// extract the filename base name for hunk tag
COM_FileBase (path, base);
if (usehunk == 1)
buf = Hunk_AllocName (len+1, base);
else if (usehunk == 2)
buf = Hunk_TempAlloc (len+1);
else if (usehunk == 0)
buf = Z_Malloc (mainzone,len+1);
else if (usehunk == 3)
buf = Cache_Alloc (loadcache, len+1, base);
else if (usehunk == 4)
{
if (len+1 > loadsize)
buf = Hunk_TempAlloc (len+1);
else
buf = loadbuf;
}
else
Sys_Error ("COM_LoadFile: bad usehunk");
if (!buf)
Sys_Error ("COM_LoadFile: not enough space for %s", path);
((byte *)buf)[len] = 0;
Draw_BeginDisc ();
Sys_FileRead (h, buf, len);
COM_CloseFile (h);
Draw_EndDisc ();
return buf;
}
qbyte *COM_LoadHunkFileOld (char *path)
{
return COM_LoadFileOld (path, 1);
}
// 2001-09-12 Returning information about loaded file by Maddes start
//byte *COM_LoadTempFile (char *path)
loadedfile_t *COM_LoadTempFile (char *path)
// 2001-09-12 Returning information about loaded file by Maddes end
{
return COM_LoadFile (path, 2);
}
// 2001-09-12 Returning information about loaded file by Maddes start
//void COM_LoadCacheFile (char *path, struct cache_user_s *cu)
loadedfile_t *COM_LoadCacheFile (char *path, struct cache_user_s *cu)
// 2001-09-12 Returning information about loaded file by Maddes end
{
loadcache = cu;
return COM_LoadFile (path, 3); // 2001-09-12 Returning information about loaded file by Maddes
}
// uses temp hunk if larger than bufsize
// 2001-09-12 Returning information about loaded file by Maddes start
//byte *COM_LoadStackFile (char *path, void *buffer, int bufsize)
loadedfile_t *COM_LoadStackFile (char *path, void *buffer, int bufsize)
// 2001-09-12 Returning information about loaded file by Maddes end
{
// byte *buf; // 2001-09-12 Returning information about loaded file by Maddes
loadbuf = (byte *)buffer;
loadsize = bufsize;
// 2001-09-12 Returning information about loaded file by Maddes start
/*
buf = COM_LoadFile (path, 4);
return buf;
*/
return COM_LoadFile (path, 4);
// 2001-09-12 Returning information about loaded file by Maddes end
}
/*
=================
COM_LoadPackFile
Takes an explicit (not game tree related) path to a pak file.
Loads the header and directory, adding the files at the beginning
of the list so they override previous pack files.
=================
*/
pack_t *COM_LoadPackFile (char *packfile)
{
dpackheader_t header;
int i;
packfile_t *newfiles;
int numpackfiles;
pack_t *pack;
int packhandle;
dpackfile_t info[MAX_FILES_IN_PACK];
unsigned short crc;
if (Sys_FileOpenRead (packfile, &packhandle) == -1)
{
// Con_Printf ("Couldn't open %s\n", packfile);
return NULL;
}
Sys_FileRead (packhandle, (void *)&header, sizeof(header));
if (header.id[0] != 'P' || header.id[1] != 'A'
|| header.id[2] != 'C' || header.id[3] != 'K')
Sys_Error ("%s is not a packfile", packfile);
header.dirofs = LittleLong (header.dirofs);
header.dirlen = LittleLong (header.dirlen);
numpackfiles = header.dirlen / sizeof(dpackfile_t);
if (numpackfiles > MAX_FILES_IN_PACK)
Sys_Error ("%s has %i files", packfile, numpackfiles);
if (numpackfiles != PAK0_COUNT)
com_modified = true; // not the original file
newfiles = Hunk_AllocName (numpackfiles * sizeof(packfile_t), "packfile");
Sys_FileSeek (packhandle, header.dirofs);
Sys_FileRead (packhandle, (void *)info, header.dirlen);
// crc the directory to check for modifications
CRC_Init (&crc);
for (i=0 ; i<header.dirlen ; i++)
CRC_ProcessByte (&crc, ((byte *)info)[i]);
if (crc != PAK0_CRC)
com_modified = true;
// parse the directory
for (i=0 ; i<numpackfiles ; i++)
{
strcpy (newfiles[i].name, info[i].name);
newfiles[i].filepos = LittleLong(info[i].filepos);
newfiles[i].filelen = LittleLong(info[i].filelen);
}
pack = Hunk_Alloc (sizeof (pack_t));
strcpy (pack->filename, packfile);
pack->handle = packhandle;
pack->numfiles = numpackfiles;
pack->files = newfiles;
Con_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
return pack;
}
/*
================
COM_AddGameDirectory
Sets com_gamedir, adds the directory to the head of the path,
then loads and adds pak1.pak pak2.pak ...
================
*/
void COM_AddGameDirectory (char *dir)
{
int i;
searchpath_t *search;
pack_t *pak;
char pakfile[MAX_OSPATH];
strcpy (com_gamedir, dir);
//
// add the directory to the search path
//
search = Hunk_Alloc (sizeof(searchpath_t));
strcpy (search->filename, dir);
search->next = com_searchpaths;
com_searchpaths = search;
//
// add any pak files in the format pak0.pak pak1.pak, ...
//
for (i=0 ; ; i++)
{
sprintf (pakfile, "%s/pak%i.pak", dir, i);
pak = COM_LoadPackFile (pakfile);
if (!pak)
break;
search = Hunk_Alloc (sizeof(searchpath_t));
strcpy (search->filename, dir); // 2001-09-12 Finding the last searchpath of a directory by Maddes
search->pack = pak;
search->next = com_searchpaths;
com_searchpaths = search;
}
//
// add the contents of the parms.txt file to the end of the command line
//
}
/*
================
COM_InitFilesystem
================
*/
void COM_InitFilesystem (void)
{
int i, j;
char basedir[MAX_OSPATH];
searchpath_t *search;
//
// -basedir <path>
// Overrides the system supplied base directory (under GAMENAME)
//
i = COM_CheckParm ("-basedir");
if (i && i < com_argc-1)
strcpy (basedir, com_argv[i+1]);
else
strcpy (basedir, host_parms.basedir);
j = strlen (basedir);
if (j > 0)
{
if ((basedir[j-1] == '\\') || (basedir[j-1] == '/'))
basedir[j-1] = 0;
}
//
// -cachedir <path>
// Overrides the system supplied cache directory (NULL or /qcache)
// -cachedir - will disable caching.
//
i = COM_CheckParm ("-cachedir");
if (i && i < com_argc-1)
{
if (com_argv[i+1][0] == '-')
com_cachedir[0] = 0;
else
strcpy (com_cachedir, com_argv[i+1]);
}
else if (host_parms.cachedir)
strcpy (com_cachedir, host_parms.cachedir);
else
com_cachedir[0] = 0;
//
// start up with GAMENAME by default (id1)
//
COM_AddGameDirectory (va("%s/"GAMENAME, basedir) );
if (COM_CheckParm ("-rogue"))
COM_AddGameDirectory (va("%s/rogue", basedir) );
if (COM_CheckParm ("-hipnotic"))
COM_AddGameDirectory (va("%s/hipnotic", basedir) );
if (COM_CheckParm ("-quoth"))
COM_AddGameDirectory (va("%s/quoth", basedir) );
if (COM_CheckParm ("-transfusion")){
COM_AddGameDirectory (va("%s/basetf", basedir) );
gamemode = GAME_TRANSFUSION;
}
if (COM_CheckParm ("-fight")){
COM_AddGameDirectory (va("%s/fite", basedir) );
gamemode = GAME_FIGHT;
}
if (COM_CheckParm ("-laserarena")){
COM_AddGameDirectory (va("%s/main", basedir) );
gamemode = GAME_LASER_ARENA;
}
if (COM_CheckParm ("-kurok")){
COM_AddGameDirectory (va("%s/kurok", basedir) );
gamemode = GAME_KUROK;
}
// 1999-12-23 Multiple "-data" parameters by Maddes start
//
// -data <datadir>
// Adds datadirs similar to "-game"
//
i = 1;
// 2000-07-30 DJGPP compiler warning fix by Norberto Alfredo Bensa start
// while(i = COM_CheckParmOffset ("-data", i))
while((i = COM_CheckParmOffset ("-data", i)))
// 2000-07-30 DJGPP compiler warning fix by Norberto Alfredo Bensa end
{
if (i && i < com_argc-1)
{
com_modified = true;
COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
}
i++;
}
// 1999-12-23 Multiple "-data" parameters by Maddes end
//
// -game <gamedir>
// Adds basedir/gamedir as an override game
//
i = COM_CheckParm ("-game");
if (i && i < com_argc-1)
{
com_modified = true;
COM_AddGameDirectory (va("%s/%s", basedir, com_argv[i+1]));
if(strcmp(com_gamedir, "hipnotic") == 0)
hipnotic = true;
else if(strcmp(com_gamedir, "rogue") == 0);
rogue = true;
}
//
// -path <dir or packfile> [<dir or packfile>] ...
// Fully specifies the exact search path, overriding the generated one
//
i = COM_CheckParm ("-path");
if (i)
{
com_modified = true;
com_searchpaths = NULL;
while (++i < com_argc)
{
if (!com_argv[i] || com_argv[i][0] == '+' || com_argv[i][0] == '-')
break;
search = Hunk_Alloc (sizeof(searchpath_t));
if ( !strcmp(COM_FileExtension(com_argv[i]), "pak") )
{
search->pack = COM_LoadPackFile (com_argv[i]);
if (!search->pack)
Sys_Error ("Couldn't load packfile: %s", com_argv[i]);
}
else
strcpy (search->filename, com_argv[i]);
search->next = com_searchpaths;
com_searchpaths = search;
}
}
if (COM_CheckParm ("-proghack"))
proghack = true;
}
// 2001-09-12 Finding the last searchpath of a directory start
/*
============
COM_GetDirSearchPath
Find the last searchpath entry of the same directory of the given searchpath
============
*/
searchpath_t *COM_GetDirSearchPath(searchpath_t *startsearch)
{
searchpath_t *search, *lastsearch;
lastsearch = startsearch;
while ( (search = lastsearch->next) )
{
if (strcmp(search->filename, startsearch->filename)) // different directories, then stop here
{
break;
}
lastsearch = search;
}
return lastsearch;
}
// 2001-09-12 Finding the last searchpath of a directory end
float frand(void)
{
return (rand()&32767)* (1.0/32767);
}
float crand(void)
{
return (rand()&32767)* (2.0/32767) - 1;
}
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