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ioq3quest/code/qcommon/msg.c
Tim Angus b555d68b3f * (bug #3729) server dependencies on client.h (Ben Millwood) 
* (bug #3731) BUILD_MISSIONPACK flag in Makefile (Gabriel Schnoering
  <gabriel.schnoering@gmail.com>)
* (bug #3756) Q3VM crashes on unaligned block copy with SIGBUS (Patrick Baggett
  <baggett.patrick@figglesoftware.com>) and...
* (bug #3755) IOQuake3 shouldn't use GCC-specific __FUNCTION__
2008-08-22 22:47:26 +00:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code 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.
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "q_shared.h"
#include "qcommon.h"
static huffman_t msgHuff;
static qboolean msgInit = qfalse;
int pcount[256];
/*
==============================================================================
MESSAGE IO FUNCTIONS
Handles byte ordering and avoids alignment errors
==============================================================================
*/
int oldsize = 0;
void MSG_initHuffman( void );
void MSG_Init( msg_t *buf, byte *data, int length ) {
if (!msgInit) {
MSG_initHuffman();
}
Com_Memset (buf, 0, sizeof(*buf));
buf->data = data;
buf->maxsize = length;
}
void MSG_InitOOB( msg_t *buf, byte *data, int length ) {
if (!msgInit) {
MSG_initHuffman();
}
Com_Memset (buf, 0, sizeof(*buf));
buf->data = data;
buf->maxsize = length;
buf->oob = qtrue;
}
void MSG_Clear( msg_t *buf ) {
buf->cursize = 0;
buf->overflowed = qfalse;
buf->bit = 0; //<- in bits
}
void MSG_Bitstream( msg_t *buf ) {
buf->oob = qfalse;
}
void MSG_BeginReading( msg_t *msg ) {
msg->readcount = 0;
msg->bit = 0;
msg->oob = qfalse;
}
void MSG_BeginReadingOOB( msg_t *msg ) {
msg->readcount = 0;
msg->bit = 0;
msg->oob = qtrue;
}
void MSG_Copy(msg_t *buf, byte *data, int length, msg_t *src)
{
if (length<src->cursize) {
Com_Error( ERR_DROP, "MSG_Copy: can't copy into a smaller msg_t buffer");
}
Com_Memcpy(buf, src, sizeof(msg_t));
buf->data = data;
Com_Memcpy(buf->data, src->data, src->cursize);
}
/*
=============================================================================
bit functions
=============================================================================
*/
int overflows;
// negative bit values include signs
void MSG_WriteBits( msg_t *msg, int value, int bits ) {
int i;
// FILE* fp;
oldsize += bits;
// this isn't an exact overflow check, but close enough
if ( msg->maxsize - msg->cursize < 4 ) {
msg->overflowed = qtrue;
return;
}
if ( bits == 0 || bits < -31 || bits > 32 ) {
Com_Error( ERR_DROP, "MSG_WriteBits: bad bits %i", bits );
}
// check for overflows
if ( bits != 32 ) {
if ( bits > 0 ) {
if ( value > ( ( 1 << bits ) - 1 ) || value < 0 ) {
overflows++;
}
} else {
int r;
r = 1 << (bits-1);
if ( value > r - 1 || value < -r ) {
overflows++;
}
}
}
if ( bits < 0 ) {
bits = -bits;
}
if (msg->oob) {
if (bits==8) {
msg->data[msg->cursize] = value;
msg->cursize += 1;
msg->bit += 8;
} else if (bits==16) {
unsigned short *sp = (unsigned short *)&msg->data[msg->cursize];
*sp = LittleShort(value);
msg->cursize += 2;
msg->bit += 16;
} else if (bits==32) {
unsigned int *ip = (unsigned int *)&msg->data[msg->cursize];
*ip = LittleLong(value);
msg->cursize += 4;
msg->bit += 32;
} else {
Com_Error(ERR_DROP, "can't read %d bits\n", bits);
}
} else {
// fp = fopen("c:\\netchan.bin", "a");
value &= (0xffffffff>>(32-bits));
if (bits&7) {
int nbits;
nbits = bits&7;
for(i=0;i<nbits;i++) {
Huff_putBit((value&1), msg->data, &msg->bit);
value = (value>>1);
}
bits = bits - nbits;
}
if (bits) {
for(i=0;i<bits;i+=8) {
// fwrite(bp, 1, 1, fp);
Huff_offsetTransmit (&msgHuff.compressor, (value&0xff), msg->data, &msg->bit);
value = (value>>8);
}
}
msg->cursize = (msg->bit>>3)+1;
// fclose(fp);
}
}
int MSG_ReadBits( msg_t *msg, int bits ) {
int value;
int get;
qboolean sgn;
int i, nbits;
// FILE* fp;
value = 0;
if ( bits < 0 ) {
bits = -bits;
sgn = qtrue;
} else {
sgn = qfalse;
}
if (msg->oob) {
if (bits==8) {
value = msg->data[msg->readcount];
msg->readcount += 1;
msg->bit += 8;
} else if (bits==16) {
unsigned short *sp = (unsigned short *)&msg->data[msg->readcount];
value = LittleShort(*sp);
msg->readcount += 2;
msg->bit += 16;
} else if (bits==32) {
unsigned int *ip = (unsigned int *)&msg->data[msg->readcount];
value = LittleLong(*ip);
msg->readcount += 4;
msg->bit += 32;
} else {
Com_Error(ERR_DROP, "can't read %d bits\n", bits);
}
} else {
nbits = 0;
if (bits&7) {
nbits = bits&7;
for(i=0;i<nbits;i++) {
value |= (Huff_getBit(msg->data, &msg->bit)<<i);
}
bits = bits - nbits;
}
if (bits) {
// fp = fopen("c:\\netchan.bin", "a");
for(i=0;i<bits;i+=8) {
Huff_offsetReceive (msgHuff.decompressor.tree, &get, msg->data, &msg->bit);
// fwrite(&get, 1, 1, fp);
value |= (get<<(i+nbits));
}
// fclose(fp);
}
msg->readcount = (msg->bit>>3)+1;
}
if ( sgn ) {
if ( value & ( 1 << ( bits - 1 ) ) ) {
value |= -1 ^ ( ( 1 << bits ) - 1 );
}
}
return value;
}
//================================================================================
//
// writing functions
//
void MSG_WriteChar( msg_t *sb, int c ) {
#ifdef PARANOID
if (c < -128 || c > 127)
Com_Error (ERR_FATAL, "MSG_WriteChar: range error");
#endif
MSG_WriteBits( sb, c, 8 );
}
void MSG_WriteByte( msg_t *sb, int c ) {
#ifdef PARANOID
if (c < 0 || c > 255)
Com_Error (ERR_FATAL, "MSG_WriteByte: range error");
#endif
MSG_WriteBits( sb, c, 8 );
}
void MSG_WriteData( msg_t *buf, const void *data, int length ) {
int i;
for(i=0;i<length;i++) {
MSG_WriteByte(buf, ((byte *)data)[i]);
}
}
void MSG_WriteShort( msg_t *sb, int c ) {
#ifdef PARANOID
if (c < ((short)0x8000) || c > (short)0x7fff)
Com_Error (ERR_FATAL, "MSG_WriteShort: range error");
#endif
MSG_WriteBits( sb, c, 16 );
}
void MSG_WriteLong( msg_t *sb, int c ) {
MSG_WriteBits( sb, c, 32 );
}
void MSG_WriteFloat( msg_t *sb, float f ) {
union {
float f;
int l;
} dat;
dat.f = f;
MSG_WriteBits( sb, dat.l, 32 );
}
void MSG_WriteString( msg_t *sb, const char *s ) {
if ( !s ) {
MSG_WriteData (sb, "", 1);
} else {
int l,i;
char string[MAX_STRING_CHARS];
l = strlen( s );
if ( l >= MAX_STRING_CHARS ) {
Com_Printf( "MSG_WriteString: MAX_STRING_CHARS" );
MSG_WriteData (sb, "", 1);
return;
}
Q_strncpyz( string, s, sizeof( string ) );
// get rid of 0xff chars, because old clients don't like them
for ( i = 0 ; i < l ; i++ ) {
if ( ((byte *)string)[i] > 127 ) {
string[i] = '.';
}
}
MSG_WriteData (sb, string, l+1);
}
}
void MSG_WriteBigString( msg_t *sb, const char *s ) {
if ( !s ) {
MSG_WriteData (sb, "", 1);
} else {
int l,i;
char string[BIG_INFO_STRING];
l = strlen( s );
if ( l >= BIG_INFO_STRING ) {
Com_Printf( "MSG_WriteString: BIG_INFO_STRING" );
MSG_WriteData (sb, "", 1);
return;
}
Q_strncpyz( string, s, sizeof( string ) );
// get rid of 0xff chars, because old clients don't like them
for ( i = 0 ; i < l ; i++ ) {
if ( ((byte *)string)[i] > 127 ) {
string[i] = '.';
}
}
MSG_WriteData (sb, string, l+1);
}
}
void MSG_WriteAngle( msg_t *sb, float f ) {
MSG_WriteByte (sb, (int)(f*256/360) & 255);
}
void MSG_WriteAngle16( msg_t *sb, float f ) {
MSG_WriteShort (sb, ANGLE2SHORT(f));
}
//============================================================
//
// reading functions
//
// returns -1 if no more characters are available
int MSG_ReadChar (msg_t *msg ) {
int c;
c = (signed char)MSG_ReadBits( msg, 8 );
if ( msg->readcount > msg->cursize ) {
c = -1;
}
return c;
}
int MSG_ReadByte( msg_t *msg ) {
int c;
c = (unsigned char)MSG_ReadBits( msg, 8 );
if ( msg->readcount > msg->cursize ) {
c = -1;
}
return c;
}
int MSG_LookaheadByte( msg_t *msg ) {
const int bloc = Huff_getBloc();
const int readcount = msg->readcount;
const int bit = msg->bit;
int c = MSG_ReadByte(msg);
Huff_setBloc(bloc);
msg->readcount = readcount;
msg->bit = bit;
return c;
}
int MSG_ReadShort( msg_t *msg ) {
int c;
c = (short)MSG_ReadBits( msg, 16 );
if ( msg->readcount > msg->cursize ) {
c = -1;
}
return c;
}
int MSG_ReadLong( msg_t *msg ) {
int c;
c = MSG_ReadBits( msg, 32 );
if ( msg->readcount > msg->cursize ) {
c = -1;
}
return c;
}
float MSG_ReadFloat( msg_t *msg ) {
union {
byte b[4];
float f;
int l;
} dat;
dat.l = MSG_ReadBits( msg, 32 );
if ( msg->readcount > msg->cursize ) {
dat.f = -1;
}
return dat.f;
}
char *MSG_ReadString( msg_t *msg ) {
static char string[MAX_STRING_CHARS];
int l,c;
l = 0;
do {
c = MSG_ReadByte(msg); // use ReadByte so -1 is out of bounds
if ( c == -1 || c == 0 ) {
break;
}
// translate all fmt spec to avoid crash bugs
if ( c == '%' ) {
c = '.';
}
// don't allow higher ascii values
if ( c > 127 ) {
c = '.';
}
string[l] = c;
l++;
} while (l < sizeof(string)-1);
string[l] = 0;
return string;
}
char *MSG_ReadBigString( msg_t *msg ) {
static char string[BIG_INFO_STRING];
int l,c;
l = 0;
do {
c = MSG_ReadByte(msg); // use ReadByte so -1 is out of bounds
if ( c == -1 || c == 0 ) {
break;
}
// translate all fmt spec to avoid crash bugs
if ( c == '%' ) {
c = '.';
}
// don't allow higher ascii values
if ( c > 127 ) {
c = '.';
}
string[l] = c;
l++;
} while (l < sizeof(string)-1);
string[l] = 0;
return string;
}
char *MSG_ReadStringLine( msg_t *msg ) {
static char string[MAX_STRING_CHARS];
int l,c;
l = 0;
do {
c = MSG_ReadByte(msg); // use ReadByte so -1 is out of bounds
if (c == -1 || c == 0 || c == '\n') {
break;
}
// translate all fmt spec to avoid crash bugs
if ( c == '%' ) {
c = '.';
}
// don't allow higher ascii values
if ( c > 127 ) {
c = '.';
}
string[l] = c;
l++;
} while (l < sizeof(string)-1);
string[l] = 0;
return string;
}
float MSG_ReadAngle16( msg_t *msg ) {
return SHORT2ANGLE(MSG_ReadShort(msg));
}
void MSG_ReadData( msg_t *msg, void *data, int len ) {
int i;
for (i=0 ; i<len ; i++) {
((byte *)data)[i] = MSG_ReadByte (msg);
}
}
/*
=============================================================================
delta functions
=============================================================================
*/
extern cvar_t *cl_shownet;
#define LOG(x) if( cl_shownet->integer == 4 ) { Com_Printf("%s ", x ); };
void MSG_WriteDelta( msg_t *msg, int oldV, int newV, int bits ) {
if ( oldV == newV ) {
MSG_WriteBits( msg, 0, 1 );
return;
}
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, newV, bits );
}
int MSG_ReadDelta( msg_t *msg, int oldV, int bits ) {
if ( MSG_ReadBits( msg, 1 ) ) {
return MSG_ReadBits( msg, bits );
}
return oldV;
}
void MSG_WriteDeltaFloat( msg_t *msg, float oldV, float newV ) {
if ( oldV == newV ) {
MSG_WriteBits( msg, 0, 1 );
return;
}
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, *(int *)&newV, 32 );
}
float MSG_ReadDeltaFloat( msg_t *msg, float oldV ) {
if ( MSG_ReadBits( msg, 1 ) ) {
float newV;
*(int *)&newV = MSG_ReadBits( msg, 32 );
return newV;
}
return oldV;
}
/*
=============================================================================
delta functions with keys
=============================================================================
*/
int kbitmask[32] = {
0x00000001, 0x00000003, 0x00000007, 0x0000000F,
0x0000001F, 0x0000003F, 0x0000007F, 0x000000FF,
0x000001FF, 0x000003FF, 0x000007FF, 0x00000FFF,
0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF,
0x0001FFFF, 0x0003FFFF, 0x0007FFFF, 0x000FFFFF,
0x001FFFFf, 0x003FFFFF, 0x007FFFFF, 0x00FFFFFF,
0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF,
0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF,
};
void MSG_WriteDeltaKey( msg_t *msg, int key, int oldV, int newV, int bits ) {
if ( oldV == newV ) {
MSG_WriteBits( msg, 0, 1 );
return;
}
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, newV ^ key, bits );
}
int MSG_ReadDeltaKey( msg_t *msg, int key, int oldV, int bits ) {
if ( MSG_ReadBits( msg, 1 ) ) {
return MSG_ReadBits( msg, bits ) ^ (key & kbitmask[bits]);
}
return oldV;
}
void MSG_WriteDeltaKeyFloat( msg_t *msg, int key, float oldV, float newV ) {
if ( oldV == newV ) {
MSG_WriteBits( msg, 0, 1 );
return;
}
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, (*(int *)&newV) ^ key, 32 );
}
float MSG_ReadDeltaKeyFloat( msg_t *msg, int key, float oldV ) {
if ( MSG_ReadBits( msg, 1 ) ) {
float newV;
*(int *)&newV = MSG_ReadBits( msg, 32 ) ^ key;
return newV;
}
return oldV;
}
/*
============================================================================
usercmd_t communication
============================================================================
*/
// ms is allways sent, the others are optional
#define CM_ANGLE1 (1<<0)
#define CM_ANGLE2 (1<<1)
#define CM_ANGLE3 (1<<2)
#define CM_FORWARD (1<<3)
#define CM_SIDE (1<<4)
#define CM_UP (1<<5)
#define CM_BUTTONS (1<<6)
#define CM_WEAPON (1<<7)
/*
=====================
MSG_WriteDeltaUsercmd
=====================
*/
void MSG_WriteDeltaUsercmd( msg_t *msg, usercmd_t *from, usercmd_t *to ) {
if ( to->serverTime - from->serverTime < 256 ) {
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, to->serverTime - from->serverTime, 8 );
} else {
MSG_WriteBits( msg, 0, 1 );
MSG_WriteBits( msg, to->serverTime, 32 );
}
MSG_WriteDelta( msg, from->angles[0], to->angles[0], 16 );
MSG_WriteDelta( msg, from->angles[1], to->angles[1], 16 );
MSG_WriteDelta( msg, from->angles[2], to->angles[2], 16 );
MSG_WriteDelta( msg, from->forwardmove, to->forwardmove, 8 );
MSG_WriteDelta( msg, from->rightmove, to->rightmove, 8 );
MSG_WriteDelta( msg, from->upmove, to->upmove, 8 );
MSG_WriteDelta( msg, from->buttons, to->buttons, 16 );
MSG_WriteDelta( msg, from->weapon, to->weapon, 8 );
}
/*
=====================
MSG_ReadDeltaUsercmd
=====================
*/
void MSG_ReadDeltaUsercmd( msg_t *msg, usercmd_t *from, usercmd_t *to ) {
if ( MSG_ReadBits( msg, 1 ) ) {
to->serverTime = from->serverTime + MSG_ReadBits( msg, 8 );
} else {
to->serverTime = MSG_ReadBits( msg, 32 );
}
to->angles[0] = MSG_ReadDelta( msg, from->angles[0], 16);
to->angles[1] = MSG_ReadDelta( msg, from->angles[1], 16);
to->angles[2] = MSG_ReadDelta( msg, from->angles[2], 16);
to->forwardmove = MSG_ReadDelta( msg, from->forwardmove, 8);
to->rightmove = MSG_ReadDelta( msg, from->rightmove, 8);
to->upmove = MSG_ReadDelta( msg, from->upmove, 8);
to->buttons = MSG_ReadDelta( msg, from->buttons, 16);
to->weapon = MSG_ReadDelta( msg, from->weapon, 8);
}
/*
=====================
MSG_WriteDeltaUsercmd
=====================
*/
void MSG_WriteDeltaUsercmdKey( msg_t *msg, int key, usercmd_t *from, usercmd_t *to ) {
if ( to->serverTime - from->serverTime < 256 ) {
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, to->serverTime - from->serverTime, 8 );
} else {
MSG_WriteBits( msg, 0, 1 );
MSG_WriteBits( msg, to->serverTime, 32 );
}
if (from->angles[0] == to->angles[0] &&
from->angles[1] == to->angles[1] &&
from->angles[2] == to->angles[2] &&
from->forwardmove == to->forwardmove &&
from->rightmove == to->rightmove &&
from->upmove == to->upmove &&
from->buttons == to->buttons &&
from->weapon == to->weapon) {
MSG_WriteBits( msg, 0, 1 ); // no change
oldsize += 7;
return;
}
key ^= to->serverTime;
MSG_WriteBits( msg, 1, 1 );
MSG_WriteDeltaKey( msg, key, from->angles[0], to->angles[0], 16 );
MSG_WriteDeltaKey( msg, key, from->angles[1], to->angles[1], 16 );
MSG_WriteDeltaKey( msg, key, from->angles[2], to->angles[2], 16 );
MSG_WriteDeltaKey( msg, key, from->forwardmove, to->forwardmove, 8 );
MSG_WriteDeltaKey( msg, key, from->rightmove, to->rightmove, 8 );
MSG_WriteDeltaKey( msg, key, from->upmove, to->upmove, 8 );
MSG_WriteDeltaKey( msg, key, from->buttons, to->buttons, 16 );
MSG_WriteDeltaKey( msg, key, from->weapon, to->weapon, 8 );
}
/*
=====================
MSG_ReadDeltaUsercmd
=====================
*/
void MSG_ReadDeltaUsercmdKey( msg_t *msg, int key, usercmd_t *from, usercmd_t *to ) {
if ( MSG_ReadBits( msg, 1 ) ) {
to->serverTime = from->serverTime + MSG_ReadBits( msg, 8 );
} else {
to->serverTime = MSG_ReadBits( msg, 32 );
}
if ( MSG_ReadBits( msg, 1 ) ) {
key ^= to->serverTime;
to->angles[0] = MSG_ReadDeltaKey( msg, key, from->angles[0], 16);
to->angles[1] = MSG_ReadDeltaKey( msg, key, from->angles[1], 16);
to->angles[2] = MSG_ReadDeltaKey( msg, key, from->angles[2], 16);
to->forwardmove = MSG_ReadDeltaKey( msg, key, from->forwardmove, 8);
to->rightmove = MSG_ReadDeltaKey( msg, key, from->rightmove, 8);
to->upmove = MSG_ReadDeltaKey( msg, key, from->upmove, 8);
to->buttons = MSG_ReadDeltaKey( msg, key, from->buttons, 16);
to->weapon = MSG_ReadDeltaKey( msg, key, from->weapon, 8);
} else {
to->angles[0] = from->angles[0];
to->angles[1] = from->angles[1];
to->angles[2] = from->angles[2];
to->forwardmove = from->forwardmove;
to->rightmove = from->rightmove;
to->upmove = from->upmove;
to->buttons = from->buttons;
to->weapon = from->weapon;
}
}
/*
=============================================================================
entityState_t communication
=============================================================================
*/
/*
=================
MSG_ReportChangeVectors_f
Prints out a table from the current statistics for copying to code
=================
*/
void MSG_ReportChangeVectors_f( void ) {
int i;
for(i=0;i<256;i++) {
if (pcount[i]) {
Com_Printf("%d used %d\n", i, pcount[i]);
}
}
}
typedef struct {
char *name;
int offset;
int bits; // 0 = float
} netField_t;
// using the stringizing operator to save typing...
#define NETF(x) #x,(size_t)&((entityState_t*)0)->x
netField_t entityStateFields[] =
{
{ NETF(pos.trTime), 32 },
{ NETF(pos.trBase[0]), 0 },
{ NETF(pos.trBase[1]), 0 },
{ NETF(pos.trDelta[0]), 0 },
{ NETF(pos.trDelta[1]), 0 },
{ NETF(pos.trBase[2]), 0 },
{ NETF(apos.trBase[1]), 0 },
{ NETF(pos.trDelta[2]), 0 },
{ NETF(apos.trBase[0]), 0 },
{ NETF(event), 10 },
{ NETF(angles2[1]), 0 },
{ NETF(eType), 8 },
{ NETF(torsoAnim), 8 },
{ NETF(eventParm), 8 },
{ NETF(legsAnim), 8 },
{ NETF(groundEntityNum), GENTITYNUM_BITS },
{ NETF(pos.trType), 8 },
{ NETF(eFlags), 19 },
{ NETF(otherEntityNum), GENTITYNUM_BITS },
{ NETF(weapon), 8 },
{ NETF(clientNum), 8 },
{ NETF(angles[1]), 0 },
{ NETF(pos.trDuration), 32 },
{ NETF(apos.trType), 8 },
{ NETF(origin[0]), 0 },
{ NETF(origin[1]), 0 },
{ NETF(origin[2]), 0 },
{ NETF(solid), 24 },
{ NETF(powerups), MAX_POWERUPS },
{ NETF(modelindex), 8 },
{ NETF(otherEntityNum2), GENTITYNUM_BITS },
{ NETF(loopSound), 8 },
{ NETF(generic1), 8 },
{ NETF(origin2[2]), 0 },
{ NETF(origin2[0]), 0 },
{ NETF(origin2[1]), 0 },
{ NETF(modelindex2), 8 },
{ NETF(angles[0]), 0 },
{ NETF(time), 32 },
{ NETF(apos.trTime), 32 },
{ NETF(apos.trDuration), 32 },
{ NETF(apos.trBase[2]), 0 },
{ NETF(apos.trDelta[0]), 0 },
{ NETF(apos.trDelta[1]), 0 },
{ NETF(apos.trDelta[2]), 0 },
{ NETF(time2), 32 },
{ NETF(angles[2]), 0 },
{ NETF(angles2[0]), 0 },
{ NETF(angles2[2]), 0 },
{ NETF(constantLight), 32 },
{ NETF(frame), 16 }
};
// if (int)f == f and (int)f + ( 1<<(FLOAT_INT_BITS-1) ) < ( 1 << FLOAT_INT_BITS )
// the float will be sent with FLOAT_INT_BITS, otherwise all 32 bits will be sent
#define FLOAT_INT_BITS 13
#define FLOAT_INT_BIAS (1<<(FLOAT_INT_BITS-1))
/*
==================
MSG_WriteDeltaEntity
Writes part of a packetentities message, including the entity number.
Can delta from either a baseline or a previous packet_entity
If to is NULL, a remove entity update will be sent
If force is not set, then nothing at all will be generated if the entity is
identical, under the assumption that the in-order delta code will catch it.
==================
*/
void MSG_WriteDeltaEntity( msg_t *msg, struct entityState_s *from, struct entityState_s *to,
qboolean force ) {
int i, lc;
int numFields;
netField_t *field;
int trunc;
float fullFloat;
int *fromF, *toF;
numFields = sizeof(entityStateFields)/sizeof(entityStateFields[0]);
// all fields should be 32 bits to avoid any compiler packing issues
// the "number" field is not part of the field list
// if this assert fails, someone added a field to the entityState_t
// struct without updating the message fields
assert( numFields + 1 == sizeof( *from )/4 );
// a NULL to is a delta remove message
if ( to == NULL ) {
if ( from == NULL ) {
return;
}
MSG_WriteBits( msg, from->number, GENTITYNUM_BITS );
MSG_WriteBits( msg, 1, 1 );
return;
}
if ( to->number < 0 || to->number >= MAX_GENTITIES ) {
Com_Error (ERR_FATAL, "MSG_WriteDeltaEntity: Bad entity number: %i", to->number );
}
lc = 0;
// build the change vector as bytes so it is endien independent
for ( i = 0, field = entityStateFields ; i < numFields ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( *fromF != *toF ) {
lc = i+1;
}
}
if ( lc == 0 ) {
// nothing at all changed
if ( !force ) {
return; // nothing at all
}
// write two bits for no change
MSG_WriteBits( msg, to->number, GENTITYNUM_BITS );
MSG_WriteBits( msg, 0, 1 ); // not removed
MSG_WriteBits( msg, 0, 1 ); // no delta
return;
}
MSG_WriteBits( msg, to->number, GENTITYNUM_BITS );
MSG_WriteBits( msg, 0, 1 ); // not removed
MSG_WriteBits( msg, 1, 1 ); // we have a delta
MSG_WriteByte( msg, lc ); // # of changes
oldsize += numFields;
for ( i = 0, field = entityStateFields ; i < lc ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( *fromF == *toF ) {
MSG_WriteBits( msg, 0, 1 ); // no change
continue;
}
MSG_WriteBits( msg, 1, 1 ); // changed
if ( field->bits == 0 ) {
// float
fullFloat = *(float *)toF;
trunc = (int)fullFloat;
if (fullFloat == 0.0f) {
MSG_WriteBits( msg, 0, 1 );
oldsize += FLOAT_INT_BITS;
} else {
MSG_WriteBits( msg, 1, 1 );
if ( trunc == fullFloat && trunc + FLOAT_INT_BIAS >= 0 &&
trunc + FLOAT_INT_BIAS < ( 1 << FLOAT_INT_BITS ) ) {
// send as small integer
MSG_WriteBits( msg, 0, 1 );
MSG_WriteBits( msg, trunc + FLOAT_INT_BIAS, FLOAT_INT_BITS );
} else {
// send as full floating point value
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, *toF, 32 );
}
}
} else {
if (*toF == 0) {
MSG_WriteBits( msg, 0, 1 );
} else {
MSG_WriteBits( msg, 1, 1 );
// integer
MSG_WriteBits( msg, *toF, field->bits );
}
}
}
}
/*
==================
MSG_ReadDeltaEntity
The entity number has already been read from the message, which
is how the from state is identified.
If the delta removes the entity, entityState_t->number will be set to MAX_GENTITIES-1
Can go from either a baseline or a previous packet_entity
==================
*/
void MSG_ReadDeltaEntity( msg_t *msg, entityState_t *from, entityState_t *to,
int number) {
int i, lc;
int numFields;
netField_t *field;
int *fromF, *toF;
int print;
int trunc;
int startBit, endBit;
if ( number < 0 || number >= MAX_GENTITIES) {
Com_Error( ERR_DROP, "Bad delta entity number: %i", number );
}
if ( msg->bit == 0 ) {
startBit = msg->readcount * 8 - GENTITYNUM_BITS;
} else {
startBit = ( msg->readcount - 1 ) * 8 + msg->bit - GENTITYNUM_BITS;
}
// check for a remove
if ( MSG_ReadBits( msg, 1 ) == 1 ) {
Com_Memset( to, 0, sizeof( *to ) );
to->number = MAX_GENTITIES - 1;
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -1 ) {
Com_Printf( "%3i: #%-3i remove\n", msg->readcount, number );
}
return;
}
// check for no delta
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
*to = *from;
to->number = number;
return;
}
numFields = sizeof(entityStateFields)/sizeof(entityStateFields[0]);
lc = MSG_ReadByte(msg);
// shownet 2/3 will interleave with other printed info, -1 will
// just print the delta records`
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -1 ) {
print = 1;
Com_Printf( "%3i: #%-3i ", msg->readcount, to->number );
} else {
print = 0;
}
to->number = number;
for ( i = 0, field = entityStateFields ; i < lc ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( ! MSG_ReadBits( msg, 1 ) ) {
// no change
*toF = *fromF;
} else {
if ( field->bits == 0 ) {
// float
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
*(float *)toF = 0.0f;
} else {
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
// integral float
trunc = MSG_ReadBits( msg, FLOAT_INT_BITS );
// bias to allow equal parts positive and negative
trunc -= FLOAT_INT_BIAS;
*(float *)toF = trunc;
if ( print ) {
Com_Printf( "%s:%i ", field->name, trunc );
}
} else {
// full floating point value
*toF = MSG_ReadBits( msg, 32 );
if ( print ) {
Com_Printf( "%s:%f ", field->name, *(float *)toF );
}
}
}
} else {
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
*toF = 0;
} else {
// integer
*toF = MSG_ReadBits( msg, field->bits );
if ( print ) {
Com_Printf( "%s:%i ", field->name, *toF );
}
}
}
// pcount[i]++;
}
}
for ( i = lc, field = &entityStateFields[lc] ; i < numFields ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
// no change
*toF = *fromF;
}
if ( print ) {
if ( msg->bit == 0 ) {
endBit = msg->readcount * 8 - GENTITYNUM_BITS;
} else {
endBit = ( msg->readcount - 1 ) * 8 + msg->bit - GENTITYNUM_BITS;
}
Com_Printf( " (%i bits)\n", endBit - startBit );
}
}
/*
============================================================================
plyer_state_t communication
============================================================================
*/
// using the stringizing operator to save typing...
#define PSF(x) #x,(size_t)&((playerState_t*)0)->x
netField_t playerStateFields[] =
{
{ PSF(commandTime), 32 },
{ PSF(origin[0]), 0 },
{ PSF(origin[1]), 0 },
{ PSF(bobCycle), 8 },
{ PSF(velocity[0]), 0 },
{ PSF(velocity[1]), 0 },
{ PSF(viewangles[1]), 0 },
{ PSF(viewangles[0]), 0 },
{ PSF(weaponTime), -16 },
{ PSF(origin[2]), 0 },
{ PSF(velocity[2]), 0 },
{ PSF(legsTimer), 8 },
{ PSF(pm_time), -16 },
{ PSF(eventSequence), 16 },
{ PSF(torsoAnim), 8 },
{ PSF(movementDir), 4 },
{ PSF(events[0]), 8 },
{ PSF(legsAnim), 8 },
{ PSF(events[1]), 8 },
{ PSF(pm_flags), 16 },
{ PSF(groundEntityNum), GENTITYNUM_BITS },
{ PSF(weaponstate), 4 },
{ PSF(eFlags), 16 },
{ PSF(externalEvent), 10 },
{ PSF(gravity), 16 },
{ PSF(speed), 16 },
{ PSF(delta_angles[1]), 16 },
{ PSF(externalEventParm), 8 },
{ PSF(viewheight), -8 },
{ PSF(damageEvent), 8 },
{ PSF(damageYaw), 8 },
{ PSF(damagePitch), 8 },
{ PSF(damageCount), 8 },
{ PSF(generic1), 8 },
{ PSF(pm_type), 8 },
{ PSF(delta_angles[0]), 16 },
{ PSF(delta_angles[2]), 16 },
{ PSF(torsoTimer), 12 },
{ PSF(eventParms[0]), 8 },
{ PSF(eventParms[1]), 8 },
{ PSF(clientNum), 8 },
{ PSF(weapon), 5 },
{ PSF(viewangles[2]), 0 },
{ PSF(grapplePoint[0]), 0 },
{ PSF(grapplePoint[1]), 0 },
{ PSF(grapplePoint[2]), 0 },
{ PSF(jumppad_ent), 10 },
{ PSF(loopSound), 16 }
};
/*
=============
MSG_WriteDeltaPlayerstate
=============
*/
void MSG_WriteDeltaPlayerstate( msg_t *msg, struct playerState_s *from, struct playerState_s *to ) {
int i;
playerState_t dummy;
int statsbits;
int persistantbits;
int ammobits;
int powerupbits;
int numFields;
int c;
netField_t *field;
int *fromF, *toF;
float fullFloat;
int trunc, lc;
if (!from) {
from = &dummy;
Com_Memset (&dummy, 0, sizeof(dummy));
}
c = msg->cursize;
numFields = sizeof( playerStateFields ) / sizeof( playerStateFields[0] );
lc = 0;
for ( i = 0, field = playerStateFields ; i < numFields ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( *fromF != *toF ) {
lc = i+1;
}
}
MSG_WriteByte( msg, lc ); // # of changes
oldsize += numFields - lc;
for ( i = 0, field = playerStateFields ; i < lc ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( *fromF == *toF ) {
MSG_WriteBits( msg, 0, 1 ); // no change
continue;
}
MSG_WriteBits( msg, 1, 1 ); // changed
// pcount[i]++;
if ( field->bits == 0 ) {
// float
fullFloat = *(float *)toF;
trunc = (int)fullFloat;
if ( trunc == fullFloat && trunc + FLOAT_INT_BIAS >= 0 &&
trunc + FLOAT_INT_BIAS < ( 1 << FLOAT_INT_BITS ) ) {
// send as small integer
MSG_WriteBits( msg, 0, 1 );
MSG_WriteBits( msg, trunc + FLOAT_INT_BIAS, FLOAT_INT_BITS );
} else {
// send as full floating point value
MSG_WriteBits( msg, 1, 1 );
MSG_WriteBits( msg, *toF, 32 );
}
} else {
// integer
MSG_WriteBits( msg, *toF, field->bits );
}
}
c = msg->cursize - c;
//
// send the arrays
//
statsbits = 0;
for (i=0 ; i<MAX_STATS ; i++) {
if (to->stats[i] != from->stats[i]) {
statsbits |= 1<<i;
}
}
persistantbits = 0;
for (i=0 ; i<MAX_PERSISTANT ; i++) {
if (to->persistant[i] != from->persistant[i]) {
persistantbits |= 1<<i;
}
}
ammobits = 0;
for (i=0 ; i<MAX_WEAPONS ; i++) {
if (to->ammo[i] != from->ammo[i]) {
ammobits |= 1<<i;
}
}
powerupbits = 0;
for (i=0 ; i<MAX_POWERUPS ; i++) {
if (to->powerups[i] != from->powerups[i]) {
powerupbits |= 1<<i;
}
}
if (!statsbits && !persistantbits && !ammobits && !powerupbits) {
MSG_WriteBits( msg, 0, 1 ); // no change
oldsize += 4;
return;
}
MSG_WriteBits( msg, 1, 1 ); // changed
if ( statsbits ) {
MSG_WriteBits( msg, 1, 1 ); // changed
MSG_WriteBits( msg, statsbits, MAX_STATS );
for (i=0 ; i<MAX_STATS ; i++)
if (statsbits & (1<<i) )
MSG_WriteShort (msg, to->stats[i]);
} else {
MSG_WriteBits( msg, 0, 1 ); // no change
}
if ( persistantbits ) {
MSG_WriteBits( msg, 1, 1 ); // changed
MSG_WriteBits( msg, persistantbits, MAX_PERSISTANT );
for (i=0 ; i<MAX_PERSISTANT ; i++)
if (persistantbits & (1<<i) )
MSG_WriteShort (msg, to->persistant[i]);
} else {
MSG_WriteBits( msg, 0, 1 ); // no change
}
if ( ammobits ) {
MSG_WriteBits( msg, 1, 1 ); // changed
MSG_WriteBits( msg, ammobits, MAX_WEAPONS );
for (i=0 ; i<MAX_WEAPONS ; i++)
if (ammobits & (1<<i) )
MSG_WriteShort (msg, to->ammo[i]);
} else {
MSG_WriteBits( msg, 0, 1 ); // no change
}
if ( powerupbits ) {
MSG_WriteBits( msg, 1, 1 ); // changed
MSG_WriteBits( msg, powerupbits, MAX_POWERUPS );
for (i=0 ; i<MAX_POWERUPS ; i++)
if (powerupbits & (1<<i) )
MSG_WriteLong( msg, to->powerups[i] );
} else {
MSG_WriteBits( msg, 0, 1 ); // no change
}
}
/*
===================
MSG_ReadDeltaPlayerstate
===================
*/
void MSG_ReadDeltaPlayerstate (msg_t *msg, playerState_t *from, playerState_t *to ) {
int i, lc;
int bits;
netField_t *field;
int numFields;
int startBit, endBit;
int print;
int *fromF, *toF;
int trunc;
playerState_t dummy;
if ( !from ) {
from = &dummy;
Com_Memset( &dummy, 0, sizeof( dummy ) );
}
*to = *from;
if ( msg->bit == 0 ) {
startBit = msg->readcount * 8 - GENTITYNUM_BITS;
} else {
startBit = ( msg->readcount - 1 ) * 8 + msg->bit - GENTITYNUM_BITS;
}
// shownet 2/3 will interleave with other printed info, -2 will
// just print the delta records
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -2 ) {
print = 1;
Com_Printf( "%3i: playerstate ", msg->readcount );
} else {
print = 0;
}
numFields = sizeof( playerStateFields ) / sizeof( playerStateFields[0] );
lc = MSG_ReadByte(msg);
for ( i = 0, field = playerStateFields ; i < lc ; i++, field++ ) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
if ( ! MSG_ReadBits( msg, 1 ) ) {
// no change
*toF = *fromF;
} else {
if ( field->bits == 0 ) {
// float
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
// integral float
trunc = MSG_ReadBits( msg, FLOAT_INT_BITS );
// bias to allow equal parts positive and negative
trunc -= FLOAT_INT_BIAS;
*(float *)toF = trunc;
if ( print ) {
Com_Printf( "%s:%i ", field->name, trunc );
}
} else {
// full floating point value
*toF = MSG_ReadBits( msg, 32 );
if ( print ) {
Com_Printf( "%s:%f ", field->name, *(float *)toF );
}
}
} else {
// integer
*toF = MSG_ReadBits( msg, field->bits );
if ( print ) {
Com_Printf( "%s:%i ", field->name, *toF );
}
}
}
}
for ( i=lc,field = &playerStateFields[lc];i<numFields; i++, field++) {
fromF = (int *)( (byte *)from + field->offset );
toF = (int *)( (byte *)to + field->offset );
// no change
*toF = *fromF;
}
// read the arrays
if (MSG_ReadBits( msg, 1 ) ) {
// parse stats
if ( MSG_ReadBits( msg, 1 ) ) {
LOG("PS_STATS");
bits = MSG_ReadBits (msg, MAX_STATS);
for (i=0 ; i<MAX_STATS ; i++) {
if (bits & (1<<i) ) {
to->stats[i] = MSG_ReadShort(msg);
}
}
}
// parse persistant stats
if ( MSG_ReadBits( msg, 1 ) ) {
LOG("PS_PERSISTANT");
bits = MSG_ReadBits (msg, MAX_PERSISTANT);
for (i=0 ; i<MAX_PERSISTANT ; i++) {
if (bits & (1<<i) ) {
to->persistant[i] = MSG_ReadShort(msg);
}
}
}
// parse ammo
if ( MSG_ReadBits( msg, 1 ) ) {
LOG("PS_AMMO");
bits = MSG_ReadBits (msg, MAX_WEAPONS);
for (i=0 ; i<MAX_WEAPONS ; i++) {
if (bits & (1<<i) ) {
to->ammo[i] = MSG_ReadShort(msg);
}
}
}
// parse powerups
if ( MSG_ReadBits( msg, 1 ) ) {
LOG("PS_POWERUPS");
bits = MSG_ReadBits (msg, MAX_POWERUPS);
for (i=0 ; i<MAX_POWERUPS ; i++) {
if (bits & (1<<i) ) {
to->powerups[i] = MSG_ReadLong(msg);
}
}
}
}
if ( print ) {
if ( msg->bit == 0 ) {
endBit = msg->readcount * 8 - GENTITYNUM_BITS;
} else {
endBit = ( msg->readcount - 1 ) * 8 + msg->bit - GENTITYNUM_BITS;
}
Com_Printf( " (%i bits)\n", endBit - startBit );
}
}
int msg_hData[256] = {
250315, // 0
41193, // 1
6292, // 2
7106, // 3
3730, // 4
3750, // 5
6110, // 6
23283, // 7
33317, // 8
6950, // 9
7838, // 10
9714, // 11
9257, // 12
17259, // 13
3949, // 14
1778, // 15
8288, // 16
1604, // 17
1590, // 18
1663, // 19
1100, // 20
1213, // 21
1238, // 22
1134, // 23
1749, // 24
1059, // 25
1246, // 26
1149, // 27
1273, // 28
4486, // 29
2805, // 30
3472, // 31
21819, // 32
1159, // 33
1670, // 34
1066, // 35
1043, // 36
1012, // 37
1053, // 38
1070, // 39
1726, // 40
888, // 41
1180, // 42
850, // 43
960, // 44
780, // 45
1752, // 46
3296, // 47
10630, // 48
4514, // 49
5881, // 50
2685, // 51
4650, // 52
3837, // 53
2093, // 54
1867, // 55
2584, // 56
1949, // 57
1972, // 58
940, // 59
1134, // 60
1788, // 61
1670, // 62
1206, // 63
5719, // 64
6128, // 65
7222, // 66
6654, // 67
3710, // 68
3795, // 69
1492, // 70
1524, // 71
2215, // 72
1140, // 73
1355, // 74
971, // 75
2180, // 76
1248, // 77
1328, // 78
1195, // 79
1770, // 80
1078, // 81
1264, // 82
1266, // 83
1168, // 84
965, // 85
1155, // 86
1186, // 87
1347, // 88
1228, // 89
1529, // 90
1600, // 91
2617, // 92
2048, // 93
2546, // 94
3275, // 95
2410, // 96
3585, // 97
2504, // 98
2800, // 99
2675, // 100
6146, // 101
3663, // 102
2840, // 103
14253, // 104
3164, // 105
2221, // 106
1687, // 107
3208, // 108
2739, // 109
3512, // 110
4796, // 111
4091, // 112
3515, // 113
5288, // 114
4016, // 115
7937, // 116
6031, // 117
5360, // 118
3924, // 119
4892, // 120
3743, // 121
4566, // 122
4807, // 123
5852, // 124
6400, // 125
6225, // 126
8291, // 127
23243, // 128
7838, // 129
7073, // 130
8935, // 131
5437, // 132
4483, // 133
3641, // 134
5256, // 135
5312, // 136
5328, // 137
5370, // 138
3492, // 139
2458, // 140
1694, // 141
1821, // 142
2121, // 143
1916, // 144
1149, // 145
1516, // 146
1367, // 147
1236, // 148
1029, // 149
1258, // 150
1104, // 151
1245, // 152
1006, // 153
1149, // 154
1025, // 155
1241, // 156
952, // 157
1287, // 158
997, // 159
1713, // 160
1009, // 161
1187, // 162
879, // 163
1099, // 164
929, // 165
1078, // 166
951, // 167
1656, // 168
930, // 169
1153, // 170
1030, // 171
1262, // 172
1062, // 173
1214, // 174
1060, // 175
1621, // 176
930, // 177
1106, // 178
912, // 179
1034, // 180
892, // 181
1158, // 182
990, // 183
1175, // 184
850, // 185
1121, // 186
903, // 187
1087, // 188
920, // 189
1144, // 190
1056, // 191
3462, // 192
2240, // 193
4397, // 194
12136, // 195
7758, // 196
1345, // 197
1307, // 198
3278, // 199
1950, // 200
886, // 201
1023, // 202
1112, // 203
1077, // 204
1042, // 205
1061, // 206
1071, // 207
1484, // 208
1001, // 209
1096, // 210
915, // 211
1052, // 212
995, // 213
1070, // 214
876, // 215
1111, // 216
851, // 217
1059, // 218
805, // 219
1112, // 220
923, // 221
1103, // 222
817, // 223
1899, // 224
1872, // 225
976, // 226
841, // 227
1127, // 228
956, // 229
1159, // 230
950, // 231
7791, // 232
954, // 233
1289, // 234
933, // 235
1127, // 236
3207, // 237
1020, // 238
927, // 239
1355, // 240
768, // 241
1040, // 242
745, // 243
952, // 244
805, // 245
1073, // 246
740, // 247
1013, // 248
805, // 249
1008, // 250
796, // 251
996, // 252
1057, // 253
11457, // 254
13504, // 255
};
void MSG_initHuffman( void ) {
int i,j;
msgInit = qtrue;
Huff_Init(&msgHuff);
for(i=0;i<256;i++) {
for (j=0;j<msg_hData[i];j++) {
Huff_addRef(&msgHuff.compressor, (byte)i); // Do update
Huff_addRef(&msgHuff.decompressor, (byte)i); // Do update
}
}
}
/*
void MSG_NUinitHuffman() {
byte *data;
int size, i, ch;
int array[256];
msgInit = qtrue;
Huff_Init(&msgHuff);
// load it in
size = FS_ReadFile( "netchan/netchan.bin", (void **)&data );
for(i=0;i<256;i++) {
array[i] = 0;
}
for(i=0;i<size;i++) {
ch = data[i];
Huff_addRef(&msgHuff.compressor, ch); // Do update
Huff_addRef(&msgHuff.decompressor, ch); // Do update
array[ch]++;
}
Com_Printf("msg_hData {\n");
for(i=0;i<256;i++) {
if (array[i] == 0) {
Huff_addRef(&msgHuff.compressor, i); // Do update
Huff_addRef(&msgHuff.decompressor, i); // Do update
}
Com_Printf("%d, // %d\n", array[i], i);
}
Com_Printf("};\n");
FS_FreeFile( data );
Cbuf_AddText( "condump dump.txt\n" );
}
*/
//===========================================================================
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