mirror of
https://bitbucket.org/CPMADevs/cnq3
synced 2024-11-15 00:31:29 +00:00
1201 lines
29 KiB
C++
1201 lines
29 KiB
C++
/*
|
|
===========================================================================
|
|
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"
|
|
|
|
|
|
/*
|
|
==============================================================================
|
|
|
|
MESSAGE IO FUNCTIONS
|
|
|
|
Handles byte ordering and avoids alignment errors
|
|
==============================================================================
|
|
*/
|
|
|
|
|
|
void MSG_Init( msg_t *buf, byte *data, int length ) {
|
|
Com_Memset (buf, 0, sizeof(*buf));
|
|
buf->data = data;
|
|
buf->maxsize = length;
|
|
}
|
|
|
|
void MSG_InitOOB( msg_t *buf, byte *data, int length ) {
|
|
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, const 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
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
//static int overflows;
|
|
|
|
// negative bit values include signs
|
|
void MSG_WriteBits( msg_t *msg, int value, int bits ) {
|
|
int i, bitIndex;
|
|
|
|
// 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 );
|
|
}
|
|
|
|
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 write %d bits\n", bits);
|
|
}
|
|
} else {
|
|
value &= (0xffffffff>>(32-bits));
|
|
if (bits&7) {
|
|
int nbits;
|
|
nbits = bits&7;
|
|
bitIndex = msg->bit;
|
|
for(i=0;i<nbits;i++) {
|
|
StatHuff_WriteBit((value & 1), msg->data, bitIndex);
|
|
value = (value>>1);
|
|
bitIndex++;
|
|
}
|
|
msg->bit = bitIndex;
|
|
bits = bits - nbits;
|
|
}
|
|
if (bits) {
|
|
bitIndex = msg->bit;
|
|
for(i=0;i<bits;i+=8) {
|
|
bitIndex += StatHuff_WriteSymbol((value & 0xff), msg->data, bitIndex);
|
|
value = (value>>8);
|
|
}
|
|
msg->bit = bitIndex;
|
|
}
|
|
msg->cursize = (msg->bit>>3)+1;
|
|
}
|
|
}
|
|
|
|
int MSG_ReadBits( msg_t *msg, int bits ) {
|
|
int value;
|
|
int get;
|
|
qbool sgn;
|
|
int i, nbits, bitIndex;
|
|
|
|
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_NDP, "can't read %d bits\n", bits);
|
|
}
|
|
} else {
|
|
nbits = 0;
|
|
if (bits&7) {
|
|
nbits = bits&7;
|
|
bitIndex = msg->bit;
|
|
for(i=0;i<nbits;i++) {
|
|
value |= StatHuff_ReadBit(msg->data, bitIndex) << i;
|
|
bitIndex++;
|
|
}
|
|
msg->bit = bitIndex;
|
|
bits = bits - nbits;
|
|
}
|
|
if (bits) {
|
|
bitIndex = msg->bit;
|
|
for(i=0;i<bits;i+=8) {
|
|
bitIndex += StatHuff_ReadSymbol(&get, msg->data, bitIndex);
|
|
value |= (get<<(i+nbits));
|
|
}
|
|
msg->bit = bitIndex;
|
|
}
|
|
msg->readcount = (msg->bit>>3)+1;
|
|
}
|
|
if ( sgn ) {
|
|
if ( value & ( 1 << ( bits - 1 ) ) ) {
|
|
value |= -1 ^ ( ( 1 << bits ) - 1 );
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
|
|
//================================================================================
|
|
|
|
|
|
//
|
|
// writing functions
|
|
//
|
|
|
|
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_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);
|
|
}
|
|
}
|
|
|
|
|
|
//============================================================
|
|
|
|
//
|
|
// reading functions: return -1 if no more characters are available
|
|
//
|
|
|
|
int MSG_ReadByte( msg_t *msg )
|
|
{
|
|
int c = (unsigned char)MSG_ReadBits( msg, 8 );
|
|
if ( msg->readcount > msg->cursize ) {
|
|
c = -1;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
int MSG_ReadShort( msg_t *msg )
|
|
{
|
|
int c = (short)MSG_ReadBits( msg, 16 );
|
|
if ( msg->readcount > msg->cursize ) {
|
|
c = -1;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
int MSG_ReadLong( msg_t *msg )
|
|
{
|
|
int c = MSG_ReadBits( msg, 32 );
|
|
if ( msg->readcount > msg->cursize ) {
|
|
c = -1;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
//
|
|
// Notes about the MSG_Read*String* functions
|
|
//
|
|
// If N is the string buffer size, then:
|
|
// - the max. string length is N-1 because
|
|
// the NULL-terminator is part of the buffer
|
|
// - the loop can call MSG_ReadByte at most N times
|
|
// - the loop can write at most N-1 chars
|
|
// to leave space for the NULL terminator
|
|
//
|
|
// The "q3msgboom" bug was happening because a string
|
|
// of length >= N-1 was invoking MSG_ReadByte N-1 times
|
|
// instead of N times, leaving the bit stream in an
|
|
// invalid state and later leading to the
|
|
// "Illegible server message" drop error.
|
|
//
|
|
|
|
char *MSG_ReadString( msg_t *msg ) {
|
|
static char string[MAX_STRING_CHARS];
|
|
|
|
int l = 0;
|
|
for (;;) {
|
|
const int c = MSG_ReadByte(msg);
|
|
if (c <= 0 || l >= sizeof(string) - 1)
|
|
break;
|
|
|
|
string[l++] = c == '%' || c > 127 ? '.' : c;
|
|
}
|
|
string[l] = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
char *MSG_ReadBigString( msg_t *msg ) {
|
|
static char string[BIG_INFO_STRING];
|
|
|
|
int l = 0;
|
|
for (;;) {
|
|
const int c = MSG_ReadByte(msg);
|
|
if (c <= 0 || l >= sizeof(string) - 1)
|
|
break;
|
|
|
|
string[l++] = c == '%' || c > 127 ? '.' : c;
|
|
}
|
|
string[l] = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
char *MSG_ReadStringLine( msg_t *msg ) {
|
|
static char string[MAX_STRING_CHARS];
|
|
|
|
int l = 0;
|
|
for (;;) {
|
|
const int c = MSG_ReadByte(msg);
|
|
if (c <= 0 || c == '\n' || l >= sizeof(string) - 1)
|
|
break;
|
|
|
|
string[l++] = c == '%' || c > 127 ? '.' : c;
|
|
}
|
|
string[l] = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
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 with keys
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
#ifndef DEDICATED
|
|
extern cvar_t* cl_shownet;
|
|
#define NETLOG(x) if ( cl_shownet->integer == 4 ) { Com_Printf("%s ", x ); };
|
|
#else
|
|
#define NETLOG(x)
|
|
#endif
|
|
|
|
static const 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, int(0xFFFFFFFF),
|
|
};
|
|
|
|
static 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 );
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
|
|
/*
|
|
============================================================================
|
|
|
|
usercmd_t communication
|
|
ucmds always have time, then either all fields or none
|
|
|
|
============================================================================
|
|
*/
|
|
|
|
|
|
void MSG_WriteDeltaUsercmdKey( msg_t* msg, int key, const 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
|
|
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 );
|
|
}
|
|
|
|
|
|
void MSG_ReadDeltaUsercmdKey( msg_t* msg, int key, const 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;
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
|
|
|
|
// 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))
|
|
|
|
typedef struct {
|
|
const char* name;
|
|
size_t offset;
|
|
int bits; // 0 = float
|
|
} netField_t;
|
|
|
|
|
|
/*
|
|
=============================================================================
|
|
|
|
entityState_t communication
|
|
|
|
=============================================================================
|
|
*/
|
|
|
|
// using the stringizing operator to save typing...
|
|
#define ESF(x) #x,(size_t)&((entityState_t*)0)->x
|
|
|
|
static const netField_t entityStateFields[] =
|
|
{
|
|
{ ESF(pos.trTime), 32 },
|
|
{ ESF(pos.trBase[0]), 0 },
|
|
{ ESF(pos.trBase[1]), 0 },
|
|
{ ESF(pos.trDelta[0]), 0 },
|
|
{ ESF(pos.trDelta[1]), 0 },
|
|
{ ESF(pos.trBase[2]), 0 },
|
|
{ ESF(apos.trBase[1]), 0 },
|
|
{ ESF(pos.trDelta[2]), 0 },
|
|
{ ESF(apos.trBase[0]), 0 },
|
|
{ ESF(event), 10 },
|
|
{ ESF(angles2[1]), 0 },
|
|
{ ESF(eType), 8 },
|
|
{ ESF(torsoAnim), 8 },
|
|
{ ESF(eventParm), 8 },
|
|
{ ESF(legsAnim), 8 },
|
|
{ ESF(groundEntityNum), GENTITYNUM_BITS },
|
|
{ ESF(pos.trType), 8 },
|
|
{ ESF(eFlags), 19 },
|
|
{ ESF(otherEntityNum), GENTITYNUM_BITS },
|
|
{ ESF(weapon), 8 },
|
|
{ ESF(clientNum), 8 },
|
|
{ ESF(angles[1]), 0 },
|
|
{ ESF(pos.trDuration), 32 },
|
|
{ ESF(apos.trType), 8 },
|
|
{ ESF(origin[0]), 0 },
|
|
{ ESF(origin[1]), 0 },
|
|
{ ESF(origin[2]), 0 },
|
|
{ ESF(solid), 24 },
|
|
{ ESF(powerups), MAX_POWERUPS },
|
|
{ ESF(modelindex), 8 },
|
|
{ ESF(otherEntityNum2), GENTITYNUM_BITS },
|
|
{ ESF(loopSound), 8 },
|
|
{ ESF(generic1), 8 },
|
|
{ ESF(origin2[2]), 0 },
|
|
{ ESF(origin2[0]), 0 },
|
|
{ ESF(origin2[1]), 0 },
|
|
{ ESF(modelindex2), 8 },
|
|
{ ESF(angles[0]), 0 },
|
|
{ ESF(time), 32 },
|
|
{ ESF(apos.trTime), 32 },
|
|
{ ESF(apos.trDuration), 32 },
|
|
{ ESF(apos.trBase[2]), 0 },
|
|
{ ESF(apos.trDelta[0]), 0 },
|
|
{ ESF(apos.trDelta[1]), 0 },
|
|
{ ESF(apos.trDelta[2]), 0 },
|
|
{ ESF(time2), 32 },
|
|
{ ESF(angles[2]), 0 },
|
|
{ ESF(angles2[0]), 0 },
|
|
{ ESF(angles2[2]), 0 },
|
|
{ ESF(constantLight), 32 },
|
|
{ ESF(frame), 16 }
|
|
};
|
|
|
|
static const int numESF = sizeof(entityStateFields) / sizeof(entityStateFields[0]);
|
|
|
|
|
|
/*
|
|
==================
|
|
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, const entityState_t* from, const entityState_t* to, qbool force )
|
|
{
|
|
int i, lc;
|
|
int *fromF, *toF;
|
|
|
|
// 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
|
|
COMPILE_TIME_ASSERT( numESF + 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;
|
|
const netField_t* field;
|
|
// build the change vector as bytes so it is endien independent
|
|
for ( i = 0, field = entityStateFields ; i < numESF ; 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
|
|
|
|
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;
|
|
|
|
if (fullFloat == 0.0f) {
|
|
MSG_WriteBits( msg, 0, 1 );
|
|
} else {
|
|
MSG_WriteBits( msg, 1, 1 );
|
|
int 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 {
|
|
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, const entityState_t* from, entityState_t* to, int number )
|
|
{
|
|
int i, lc;
|
|
int *fromF, *toF;
|
|
int print;
|
|
int startBit, endBit;
|
|
|
|
if ( number < 0 || number >= MAX_GENTITIES ) {
|
|
Com_Error( ERR_DROP_NDP, "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;
|
|
#ifndef DEDICATED
|
|
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -1 ) {
|
|
Com_Printf( "%3i: #%-3i remove\n", msg->readcount, number );
|
|
}
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
// check for no delta
|
|
if ( MSG_ReadBits( msg, 1 ) == 0 ) {
|
|
*to = *from;
|
|
to->number = number;
|
|
return;
|
|
}
|
|
|
|
lc = MSG_ReadByte(msg);
|
|
if ( lc < 0 || lc > ARRAY_LEN(entityStateFields) ) {
|
|
Com_Error( ERR_DROP_NDP, "invalid entityState_t field count %d (max: %d)\n", lc, ARRAY_LEN(entityStateFields) );
|
|
}
|
|
|
|
// shownet 2/3 will interleave with other printed info, -1 will
|
|
// just print the delta records
|
|
#ifndef DEDICATED
|
|
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -1 ) {
|
|
print = 1;
|
|
Com_Printf( "%3i: #%-3i ", msg->readcount, to->number );
|
|
} else {
|
|
print = 0;
|
|
}
|
|
#else
|
|
print = 0;
|
|
#endif
|
|
|
|
to->number = number;
|
|
|
|
const netField_t* field;
|
|
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
|
|
int 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 < numESF ; 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
|
|
|
|
static const 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 }
|
|
};
|
|
|
|
static const int numPSF = sizeof(playerStateFields) / sizeof(playerStateFields[0]);
|
|
|
|
|
|
void MSG_WriteDeltaPlayerstate( msg_t* msg, const playerState_t* from, playerState_t* to )
|
|
{
|
|
int i;
|
|
playerState_t dummy;
|
|
int c;
|
|
int *fromF, *toF;
|
|
int lc;
|
|
|
|
if (!from) {
|
|
from = &dummy;
|
|
Com_Memset (&dummy, 0, sizeof(dummy));
|
|
}
|
|
|
|
c = msg->cursize;
|
|
|
|
lc = 0;
|
|
const netField_t* field;
|
|
for ( i = 0, field = playerStateFields ; i < numPSF ; 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
|
|
|
|
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;
|
|
int 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
|
|
//
|
|
int statsbits = 0;
|
|
for (i=0 ; i<MAX_STATS ; i++) {
|
|
if (to->stats[i] != from->stats[i]) {
|
|
statsbits |= 1<<i;
|
|
}
|
|
}
|
|
int persistantbits = 0;
|
|
for (i=0 ; i<MAX_PERSISTANT ; i++) {
|
|
if (to->persistant[i] != from->persistant[i]) {
|
|
persistantbits |= 1<<i;
|
|
}
|
|
}
|
|
int ammobits = 0;
|
|
for (i=0 ; i<MAX_WEAPONS ; i++) {
|
|
if (to->ammo[i] != from->ammo[i]) {
|
|
ammobits |= 1<<i;
|
|
}
|
|
}
|
|
int 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
|
|
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
|
|
}
|
|
}
|
|
|
|
|
|
void MSG_ReadDeltaPlayerstate( msg_t* msg, const playerState_t* from, playerState_t* to )
|
|
{
|
|
int i, lc;
|
|
int bits;
|
|
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
|
|
#ifndef DEDICATED
|
|
if ( cl_shownet->integer >= 2 || cl_shownet->integer == -2 ) {
|
|
print = 1;
|
|
Com_Printf( "%3i: playerstate ", msg->readcount );
|
|
} else {
|
|
print = 0;
|
|
}
|
|
#else
|
|
print = 0;
|
|
#endif
|
|
|
|
lc = MSG_ReadByte(msg);
|
|
if ( lc < 0 || lc > ARRAY_LEN(playerStateFields) ) {
|
|
Com_Error( ERR_DROP_NDP, "invalid playerState_t field count %d (max: %d)\n", lc, ARRAY_LEN(playerStateFields) );
|
|
}
|
|
|
|
const netField_t* field;
|
|
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 < numPSF ; 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 ) ) {
|
|
NETLOG("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 ) ) {
|
|
NETLOG("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 ) ) {
|
|
NETLOG("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 ) ) {
|
|
NETLOG("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 );
|
|
}
|
|
}
|
|
|