/*
=====================
CL_ParseServerMessage
=====================
*/
void CL_ParseServerMessage( sizebuf_t *msg )
{
char *s;
int i, j, cmd;
int param1, param2;
int bufStart;
cls_message_debug.parsing = true; // begin parsing
starting_count = BF_GetNumBytesRead( msg ); // updates each frame
// parse the message
while( 1 )
{
if( BF_CheckOverflow( msg ))
{
Host_Error( "CL_ParseServerMessage: overflow!\n" );
return;
}
// mark start position
bufStart = BF_GetNumBytesRead( msg );
// end of message
if( BF_GetNumBitsLeft( msg ) < 8 )
break;
cmd = BF_ReadByte( msg );
// record command for debugging spew on parse problem
CL_Parse_RecordCommand( cmd, bufStart );
// other commands
switch( cmd )
{
case svc_bad:
Host_Error( "svc_bad\n" );
break;
case svc_nop:
// this does nothing
break;
case svc_disconnect:
MsgDev( D_INFO, "Disconnected from server\n" );
CL_Drop ();
Host_AbortCurrentFrame ();
break;
case svc_changing:
if( BF_ReadOneBit( msg ))
{
cls.changelevel = true;
S_StopAllSounds();
if( cls.demoplayback )
{
SCR_BeginLoadingPlaque( cl.background );
cls.changedemo = true;
}
}
else MsgDev( D_INFO, "Server disconnected, reconnecting\n" );
CL_ClearState ();
CL_InitEdicts (); // re-arrange edicts
if( cls.demoplayback )
{
cl.background = (cls.demonum != -1) ? true : false;
cls.state = ca_connected;
}
else cls.state = ca_connecting;
cls.connect_time = MAX_HEARTBEAT; // CL_CheckForResend() will fire immediately
break;
case svc_setview:
cl.refdef.viewentity = BF_ReadWord( msg );
break;
case svc_sound:
CL_ParseSoundPacket( msg, false );
break;
case svc_time:
// shuffle timestamps
cl.mtime[1] = cl.mtime[0];
cl.mtime[0] = BF_ReadFloat( msg );
break;
case svc_print:
i = BF_ReadByte( msg );
MsgDev( D_INFO, "^6%s", BF_ReadString( msg ));
if( i == PRINT_CHAT ) S_StartLocalSound( "common/menu2.wav", VOL_NORM, false );
break;
case svc_stufftext:
CL_ParseStuffText( msg );
break;
case svc_lightstyle:
CL_ParseLightStyle( msg );
break;
case svc_setangle:
CL_ParseSetAngle( msg );
break;
case svc_serverdata:
Cbuf_Execute(); // make sure any stuffed commands are done
CL_ParseServerData( msg );
break;
case svc_addangle:
CL_ParseAddAngle( msg );
break;
case svc_clientdata:
CL_ParseClientData( msg );
break;
case svc_packetentities:
CL_ParsePacketEntities( msg, false );
break;
case svc_deltapacketentities:
CL_ParsePacketEntities( msg, true );
break;
case svc_updatepings:
CL_UpdateUserPings( msg );
break;
case svc_usermessage:
CL_RegisterUserMessage( msg );
break;
case svc_particle:
CL_ParseParticles( msg );
break;
case svc_restoresound:
CL_ParseRestoreSoundPacket( msg );
break;
case svc_spawnstatic:
CL_ParseStaticEntity( msg );
break;
case svc_ambientsound:
CL_ParseSoundPacket( msg, true );
break;
case svc_crosshairangle:
CL_ParseCrosshairAngle( msg );
break;
case svc_spawnbaseline:
CL_ParseBaseline( msg );
break;
case svc_temp_entity:
CL_ParseTempEntity( msg );
break;
case svc_setpause:
cl.refdef.paused = ( BF_ReadOneBit( msg ) != 0 );
break;
case svc_deltamovevars:
CL_ParseMovevars( msg );
break;
case svc_customization:
CL_ParseCustomization( msg );
break;
case svc_centerprint:
CL_CenterPrint( BF_ReadString( msg ), 0.25f );
break;
case svc_event:
CL_ParseEvent( msg );
break;
case svc_event_reliable:
CL_ParseReliableEvent( msg );
break;
case svc_updateuserinfo:
CL_UpdateUserinfo( msg );
break;
case svc_intermission:
cl.refdef.intermission = true;
break;
case svc_modelindex:
CL_PrecacheModel( msg );
break;
case svc_soundindex:
CL_PrecacheSound( msg );
break;
case svc_soundfade:
CL_ParseSoundFade( msg );
break;
case svc_cdtrack:
param1 = BF_ReadByte( msg );
param1 = bound( 1, param1, MAX_CDTRACKS ); // tracknum
param2 = BF_ReadByte( msg );
param2 = bound( 1, param2, MAX_CDTRACKS ); // loopnum
S_StartBackgroundTrack( clgame.cdtracks[param1-1], clgame.cdtracks[param2-1], 0 );
break;
case svc_serverinfo:
CL_ServerInfo( msg );
break;
case svc_eventindex:
CL_PrecacheEvent( msg );
break;
case svc_deltatable:
Delta_ParseTableField( msg );
break;
case svc_weaponanim:
param1 = BF_ReadByte( msg ); // iAnim
param2 = BF_ReadByte( msg ); // body
CL_WeaponAnim( param1, param2 );
break;
case svc_bspdecal:
CL_ParseStaticDecal( msg );
break;
case svc_roomtype:
param1 = BF_ReadShort( msg );
Cvar_SetFloat( "room_type", param1 );
break;
case svc_chokecount:
i = BF_ReadByte( msg );
j = cls.netchan.incoming_acknowledged - 1;
for( ; i > 0 && j > cls.netchan.outgoing_sequence - CL_UPDATE_BACKUP; j-- )
{
if( cl.frames[j & CL_UPDATE_MASK].receivedtime != -3.0 )
{
cl.frames[j & CL_UPDATE_MASK].receivedtime = -2.0;
i--;
}
}
break;
case svc_resourcelist:
CL_ParseResourceList( msg );
break;
case svc_director:
CL_ParseDirector( msg );
break;
case svc_studiodecal:
CL_ParseStudioDecal( msg );
break;
case svc_querycvarvalue:
CL_ParseCvarValue( msg );
break;
case svc_querycvarvalue2:
CL_ParseCvarValue2( msg );
break;
default:
CL_ParseUserMessage( msg, cmd );
break;
}
}
cls_message_debug.parsing = false; // done
// we don't know if it is ok to save a demo message until
// after we have parsed the frame
if( !cls.demoplayback )
{
if( cls.demorecording && !cls.demowaiting )
{
CL_WriteDemoMessage( false, starting_count, msg );
}
else if( cls.state != ca_active )
{
CL_WriteDemoMessage( true, starting_count, msg );
}
}
}
/*
================
CL_ParseSnapshot
If the snapshot is parsed properly, it will be copied to
cl.frame and saved in cl.frames[]. If the snapshot is invalid
for any reason, no changes to the state will be made at all.
================
*/
void CL_ParseSnapshot( msg_t *msg ) {
int len;
clSnapshot_t *old;
clSnapshot_t newSnap;
int deltaNum;
int oldMessageNum;
int i, packetNum;
// get the reliable sequence acknowledge number
clc.reliableAcknowledge = MSG_ReadLong( msg );
// read in the new snapshot to a temporary buffer
// we will only copy to cl.frame if it is valid
memset (&newSnap, 0, sizeof(newSnap));
newSnap.serverCommandNum = clc.serverCommandSequence;
newSnap.serverTime = MSG_ReadLong( msg );
newSnap.messageNum = MSG_ReadLong( msg );
deltaNum = MSG_ReadByte( msg );
if ( !deltaNum ) {
newSnap.deltaNum = -1;
} else {
newSnap.deltaNum = newSnap.messageNum - deltaNum;
}
newSnap.cmdNum = MSG_ReadLong( msg );
newSnap.snapFlags = MSG_ReadByte( msg );
// If the frame is delta compressed from data that we
// no longer have available, we must suck up the rest of
// the frame, but not use it, then ask for a non-compressed
// message
if ( newSnap.deltaNum <= 0 ) {
newSnap.valid = qtrue; // uncompressed frame
old = NULL;
} else {
old = &cl.frames[newSnap.deltaNum & PACKET_MASK];
if ( !old->valid ) {
// should never happen
Com_Printf ("Delta from invalid frame (not supposed to happen!).\n");
} else if ( old->messageNum != newSnap.deltaNum ) {
// The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_Printf ("Delta frame too old.\n");
} else if ( cl.parseEntitiesNum - old->parseEntitiesNum > MAX_PARSE_ENTITIES ) {
Com_Printf ("Delta parseEntitiesNum too old.\n");
} else {
newSnap.valid = qtrue; // valid delta parse
}
}
// read areamask
len = MSG_ReadByte( msg );
MSG_ReadData( msg, &newSnap.areamask, len);
// read playerinfo
SHOWNET( msg, "playerstate" );
if ( old ) {
MSG_ReadDeltaPlayerstate( msg, &old->ps, &newSnap.ps );
} else {
MSG_ReadDeltaPlayerstate( msg, NULL, &newSnap.ps );
}
// read packet entities
SHOWNET( msg, "packet entities" );
CL_ParsePacketEntities( msg, old, &newSnap );
// if not valid, dump the entire thing now that it has
// been properly read
if ( !newSnap.valid ) {
return;
}
// clear the valid flags of any snapshots between the last
// received and this one
oldMessageNum = cl.frame.messageNum + 1;
if ( cl.frame.messageNum - oldMessageNum >= PACKET_BACKUP ) {
oldMessageNum = cl.frame.messageNum - ( PACKET_BACKUP - 1 );
}
for ( ; oldMessageNum < newSnap.messageNum ; oldMessageNum++ ) {
cl.frames[oldMessageNum & PACKET_MASK].valid = qfalse;
}
// copy to the current good spot
cl.frame = newSnap;
// calculate ping time
for ( i = 0 ; i < PACKET_BACKUP ; i++ ) {
packetNum = ( clc.netchan.outgoingSequence - 1 - i ) & PACKET_MASK;
if ( cl.frame.cmdNum == cl.packetCmdNumber[ packetNum ] ) {
cl.frame.ping = cls.realtime - cl.packetTime[ packetNum ];
break;
}
}
// save the frame off in the backup array for later delta comparisons
cl.frames[cl.frame.messageNum & PACKET_MASK] = cl.frame;
if (cl_shownet->integer == 3) {
Com_Printf (" frame:%i delta:%i\n", cl.frame.messageNum,
cl.frame.deltaNum);
}
// actions for valid frames
cl.newSnapshots = qtrue;
}
/*
================
CL_ParseSnapshot
If the snapshot is parsed properly, it will be copied to
cl.snap and saved in cl.snapshots[]. If the snapshot is invalid
for any reason, no changes to the state will be made at all.
================
*/
void CL_ParseSnapshot( msg_t *msg )
{
int len;
clSnapshot_t *old;
clSnapshot_t newSnap;
int deltaNum;
int oldMessageNum;
int i, packetNum;
// get the reliable sequence acknowledge number
// NOTE: now sent with all server to client messages
//clc.reliableAcknowledge = MSG_ReadLong( msg );
// read in the new snapshot to a temporary buffer
// we will only copy to cl.snap if it is valid
Com_Memset( &newSnap, 0, sizeof( newSnap ) );
// we will have read any new server commands in this
// message before we got to svc_snapshot
newSnap.serverCommandNum = clc.serverCommandSequence;
newSnap.serverTime = MSG_ReadLong( msg );
// if we were just unpaused, we can only *now* really let the
// change come into effect or the client hangs.
cl_paused->modified = 0;
newSnap.messageNum = clc.serverMessageSequence;
deltaNum = MSG_ReadByte( msg );
if ( !deltaNum )
{
newSnap.deltaNum = -1;
}
else
{
newSnap.deltaNum = newSnap.messageNum - deltaNum;
}
newSnap.snapFlags = MSG_ReadByte( msg );
// If the frame is delta compressed from data that we
// no longer have available, we must suck up the rest of
// the frame, but not use it, then ask for a non-compressed
// message
if ( newSnap.deltaNum <= 0 )
{
newSnap.valid = qtrue; // uncompressed frame
old = NULL;
if ( clc.demorecording )
{
clc.demowaiting = qfalse; // we can start recording now
// if(cl_autorecord->integer) {
// Cvar_Set( "g_synchronousClients", "0" );
// }
}
else
{
if ( cl_autorecord->integer /*&& Cvar_VariableValue( "g_synchronousClients") */ )
{
char name[ 256 ];
char mapname[ MAX_QPATH ];
char *period;
qtime_t time;
Com_RealTime( &time );
Q_strncpyz( mapname, cl.mapname, MAX_QPATH );
for ( period = mapname; *period; period++ )
{
if ( *period == '.' )
{
*period = '\0';
break;
}
}
for ( period = mapname; *period; period++ )
{
if ( *period == '/' )
{
break;
}
}
if ( *period )
{
period++;
}
Com_sprintf( name, sizeof( name ), "demos/%s_%04i-%02i-%02i_%02i%02i%02i.dm_%d", period,
1900 + time.tm_year, time.tm_mon + 1, time.tm_mday,
time.tm_hour, time.tm_min, time.tm_sec,
PROTOCOL_VERSION );
CL_Record( name );
}
}
}
else
{
old = &cl.snapshots[ newSnap.deltaNum & PACKET_MASK ];
if ( !old->valid )
{
// should never happen
Com_Printf( "Delta from invalid frame (not supposed to happen!).\n" );
}
else if ( old->messageNum != newSnap.deltaNum )
{
// The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_DPrintf( "Delta frame too old.\n" );
}
else if ( cl.parseEntitiesNum - old->parseEntitiesNum > MAX_PARSE_ENTITIES - 128 )
{
Com_DPrintf( "Delta parseEntitiesNum too old.\n" );
}
else
{
newSnap.valid = qtrue; // valid delta parse
}
}
// read areamask
len = MSG_ReadByte( msg );
if ( len > sizeof( newSnap.areamask ) )
{
Com_Error( ERR_DROP, "CL_ParseSnapshot: Invalid size %d for areamask.", len );
}
MSG_ReadData( msg, &newSnap.areamask, len );
// read playerinfo
SHOWNET( msg, "playerstate" );
if ( old )
{
MSG_ReadDeltaPlayerstate( msg, &old->ps, &newSnap.ps );
}
else
{
MSG_ReadDeltaPlayerstate( msg, NULL, &newSnap.ps );
}
// read packet entities
SHOWNET( msg, "packet entities" );
CL_ParsePacketEntities( msg, old, &newSnap );
// if not valid, dump the entire thing now that it has
// been properly read
if ( !newSnap.valid )
{
return;
}
// clear the valid flags of any snapshots between the last
// received and this one, so if there was a dropped packet
// it won't look like something valid to delta from next
// time we wrap around in the buffer
oldMessageNum = cl.snap.messageNum + 1;
if ( newSnap.messageNum - oldMessageNum >= PACKET_BACKUP )
{
oldMessageNum = newSnap.messageNum - ( PACKET_BACKUP - 1 );
}
for ( ; oldMessageNum < newSnap.messageNum; oldMessageNum++ )
{
cl.snapshots[ oldMessageNum & PACKET_MASK ].valid = qfalse;
}
// copy to the current good spot
cl.snap = newSnap;
cl.snap.ping = 999;
// calculate ping time
for ( i = 0; i < PACKET_BACKUP; i++ )
{
packetNum = ( clc.netchan.outgoingSequence - 1 - i ) & PACKET_MASK;
if ( cl.snap.ps.commandTime >= cl.outPackets[ packetNum ].p_serverTime )
{
cl.snap.ping = cls.realtime - cl.outPackets[ packetNum ].p_realtime;
break;
}
}
// save the frame off in the backup array for later delta comparisons
cl.snapshots[ cl.snap.messageNum & PACKET_MASK ] = cl.snap;
if ( cl_shownet->integer == 3 )
{
Com_Printf( " snapshot:%i delta:%i ping:%i\n", cl.snap.messageNum, cl.snap.deltaNum, cl.snap.ping );
}
cl.newSnapshots = qtrue;
}
/*
================
CL_ParseSnapshot
If the snapshot is parsed properly, it will be copied to
cl.snap and saved in cl.snapshots[]. If the snapshot is invalid
for any reason, no changes to the state will be made at all.
================
*/
void CL_ParseSnapshot( msg_t *msg ) {
int len;
clSnapshot_t *old;
clSnapshot_t newSnap;
int deltaNum;
int oldMessageNum;
int i, packetNum;
// get the reliable sequence acknowledge number
// NOTE: now sent with all server to client messages
//clc.reliableAcknowledge = MSG_ReadLong( msg );
// read in the new snapshot to a temporary buffer
// we will only copy to cl.snap if it is valid
Com_Memset (&newSnap, 0, sizeof(newSnap));
// we will have read any new server commands in this
// message before we got to svc_snapshot
newSnap.serverCommandNum = clc.serverCommandSequence;
newSnap.serverTime = MSG_ReadLong( msg );
// if we were just unpaused, we can only *now* really let the
// change come into effect or the client hangs.
cl_paused->modified = qfalse;
newSnap.messageNum = clc.serverMessageSequence;
deltaNum = MSG_ReadByte( msg );
if ( !deltaNum ) {
newSnap.deltaNum = -1;
} else {
newSnap.deltaNum = newSnap.messageNum - deltaNum;
}
newSnap.snapFlags = MSG_ReadByte( msg );
// If the frame is delta compressed from data that we
// no longer have available, we must suck up the rest of
// the frame, but not use it, then ask for a non-compressed
// message
if ( newSnap.deltaNum <= 0 ) {
newSnap.valid = qtrue; // uncompressed frame
old = NULL;
clc.demowaiting = qfalse; // we can start recording now
} else {
old = &cl.snapshots[newSnap.deltaNum & PACKET_MASK];
if ( !old->valid ) {
// should never happen
Com_Printf ("Delta from invalid frame (not supposed to happen!).\n");
} else if ( old->messageNum != newSnap.deltaNum ) {
// The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_Printf ("Delta frame too old.\n");
} else if ( cl.parseEntitiesNum - old->parseEntitiesNum > MAX_PARSE_ENTITIES-128 ) {
Com_DPrintf ("Delta parseEntitiesNum too old.\n");
} else {
newSnap.valid = qtrue; // valid delta parse
}
}
// read areamask
len = MSG_ReadByte( msg );
if((unsigned)len > sizeof(newSnap.areamask))
{
Com_Error (ERR_DROP,"CL_ParseSnapshot: Invalid size %d for areamask", len);
return;
}
MSG_ReadData( msg, &newSnap.areamask, len);
// read playerinfo
SHOWNET( msg, "playerstate" );
if ( old ) {
MSG_ReadDeltaPlayerstate( msg, &old->ps, &newSnap.ps );
if (newSnap.ps.m_iVehicleNum)
{ //this means we must have written our vehicle's ps too
MSG_ReadDeltaPlayerstate( msg, &old->vps, &newSnap.vps, qtrue );
}
} else {
MSG_ReadDeltaPlayerstate( msg, NULL, &newSnap.ps );
if (newSnap.ps.m_iVehicleNum)
{ //this means we must have written our vehicle's ps too
MSG_ReadDeltaPlayerstate( msg, NULL, &newSnap.vps, qtrue );
}
}
// read packet entities
SHOWNET( msg, "packet entities" );
CL_ParsePacketEntities( msg, old, &newSnap );
// if not valid, dump the entire thing now that it has
// been properly read
if ( !newSnap.valid ) {
return;
}
// clear the valid flags of any snapshots between the last
// received and this one, so if there was a dropped packet
// it won't look like something valid to delta from next
// time we wrap around in the buffer
oldMessageNum = cl.snap.messageNum + 1;
if ( newSnap.messageNum - oldMessageNum >= PACKET_BACKUP ) {
oldMessageNum = newSnap.messageNum - ( PACKET_BACKUP - 1 );
}
for ( ; oldMessageNum < newSnap.messageNum ; oldMessageNum++ ) {
cl.snapshots[oldMessageNum & PACKET_MASK].valid = qfalse;
}
// copy to the current good spot
cl.snap = newSnap;
cl.snap.ping = 999;
// calculate ping time
for ( i = 0 ; i < PACKET_BACKUP ; i++ ) {
packetNum = ( clc.netchan.outgoingSequence - 1 - i ) & PACKET_MASK;
if ( cl.snap.ps.commandTime >= cl.outPackets[ packetNum ].p_serverTime ) {
cl.snap.ping = cls.realtime - cl.outPackets[ packetNum ].p_realtime;
break;
}
}
// save the frame off in the backup array for later delta comparisons
cl.snapshots[cl.snap.messageNum & PACKET_MASK] = cl.snap;
if (cl_shownet->integer == 3) {
Com_Printf( " snapshot:%i delta:%i ping:%i\n", cl.snap.messageNum,
cl.snap.deltaNum, cl.snap.ping );
}
cl.newSnapshots = qtrue;
}
/*
================
CL_ParseFrame
================
*/
void CL_ParseFrame (void)
{
int cmd;
int len;
frame_t *old;
memset (&cl.frame, 0, sizeof(cl.frame));
cl.frame.serverframe = MSG_ReadLong(&net_message);
cl.frame.deltaframe = MSG_ReadLong(&net_message);
cl.frame.servertime = cl.frame.serverframe*100;
// BIG HACK to let old demos continue to work
if (cls.serverProtocol != 26)
cl.surpressCount = MSG_ReadByte(&net_message);
if (cl_shownet->value == 3)
Com_Printf (" frame:%i delta:%i\n", cl.frame.serverframe, cl.frame.deltaframe);
// If the frame is delta compressed from data that we
// no longer have available, we must suck up the rest of
// the frame, but not use it, then ask for a non-compressed
// message
if (cl.frame.deltaframe <= 0)
{
cl.frame.valid = true; // uncompressed frame
old = NULL;
cls.demowaiting = false; // we can start recording now
}
else
{
old = &cl.frames[cl.frame.deltaframe & UPDATE_MASK];
if (!old->valid)
{ // should never happen
Com_Printf ("Delta from invalid frame (not supposed to happen!).\n");
}
if (old->serverframe != cl.frame.deltaframe)
{ // The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_Printf ("Delta frame too old.\n");
}
else if (cl.parse_entities - old->parse_entities > MAX_PARSE_ENTITIES-128)
{
Com_Printf ("Delta parse_entities too old.\n");
}
else
{
cl.frame.valid = true; // valid delta parse
}
}
// clamp time
if (cl.time > cl.frame.servertime)
cl.time = cl.frame.servertime;
else if (cl.time < cl.frame.servertime - 100)
cl.time = cl.frame.servertime - 100;
// read areabits
len = MSG_ReadByte(&net_message);
MSG_ReadData(&net_message, &cl.frame.areabits, len);
// read playerinfo
cmd = MSG_ReadByte(&net_message);
SHOWNET(svc_strings[cmd]);
if (cmd != svc_playerinfo)
Com_Error(ERR_DROP, "CL_ParseFrame: not playerinfo");
CL_ParsePlayerstate(old, &cl.frame);
// read packet entities
cmd = MSG_ReadByte(&net_message);
SHOWNET(svc_strings[cmd]);
if (cmd != svc_packetentities)
Com_Error(ERR_DROP, "CL_ParseFrame: not packetentities");
CL_ParsePacketEntities(old, &cl.frame);
// save the frame off in the backup array for later delta comparisons
cl.frames[cl.frame.serverframe & UPDATE_MASK] = cl.frame;
if (cl.frame.valid)
{
// getting a valid frame message ends the connection process
if (cls.state != ca_active)
{
cls.state = ca_active;
//cl_scores_setinuse_all(false); // jitscores - clear scoreboard
cl.force_refdef = true;
cl.predicted_origin[0] = cl.frame.playerstate.pmove.origin[0]*0.125;
cl.predicted_origin[1] = cl.frame.playerstate.pmove.origin[1]*0.125;
cl.predicted_origin[2] = cl.frame.playerstate.pmove.origin[2]*0.125;
VectorCopy(cl.frame.playerstate.viewangles, cl.predicted_angles);
if (cls.disable_servercount != cl.servercount && cl.refresh_prepped)
SCR_EndLoadingPlaque(); // get rid of loading plaque
}
cl.sound_prepped = true; // can start mixing ambient sounds
// fire entity events
CL_FireEntityEvents(&cl.frame);
CL_CheckPredictionError();
}
}
void
CL_ParseFrame(void)
{
int cmd;
int len;
frame_t *old;
memset(&cl.frame, 0, sizeof(cl.frame));
cl.frame.serverframe = MSG_ReadLong(&net_message);
cl.frame.deltaframe = MSG_ReadLong(&net_message);
cl.frame.servertime = cl.frame.serverframe * 100;
/* BIG HACK to let old demos continue to work */
if (cls.serverProtocol != 26)
{
cl.surpressCount = MSG_ReadByte(&net_message);
}
if (cl_shownet->value == 3)
{
Com_Printf(" frame:%i delta:%i\n", cl.frame.serverframe,
cl.frame.deltaframe);
}
/* If the frame is delta compressed from data that we
no longer have available, we must suck up the rest of
the frame, but not use it, then ask for a non-compressed
message */
if (cl.frame.deltaframe <= 0)
{
cl.frame.valid = true; /* uncompressed frame */
old = NULL;
cls.demowaiting = false; /* we can start recording now */
}
else
{
old = &cl.frames[cl.frame.deltaframe & UPDATE_MASK];
if (!old->valid)
{
/* should never happen */
Com_Printf("Delta from invalid frame (not supposed to happen!).\n");
}
if (old->serverframe != cl.frame.deltaframe)
{
/* The frame that the server did the delta from
is too old, so we can't reconstruct it properly. */
Com_Printf("Delta frame too old.\n");
}
else if (cl.parse_entities - old->parse_entities > MAX_PARSE_ENTITIES -
128)
{
Com_Printf("Delta parse_entities too old.\n");
}
else
{
cl.frame.valid = true; /* valid delta parse */
}
}
/* clamp time */
if (cl.time > cl.frame.servertime)
{
cl.time = cl.frame.servertime;
}
else if (cl.time < cl.frame.servertime - 100)
{
cl.time = cl.frame.servertime - 100;
}
/* read areabits */
len = MSG_ReadByte(&net_message);
MSG_ReadData(&net_message, &cl.frame.areabits, len);
/* read playerinfo */
cmd = MSG_ReadByte(&net_message);
SHOWNET(svc_strings[cmd]);
if (cmd != svc_playerinfo)
{
Com_Error(ERR_DROP, "CL_ParseFrame: 0x%X not playerinfo", cmd);
}
CL_ParsePlayerstate(old, &cl.frame);
/* read packet entities */
cmd = MSG_ReadByte(&net_message);
SHOWNET(svc_strings[cmd]);
if (cmd != svc_packetentities)
{
Com_Error(ERR_DROP, "CL_ParseFrame: 0x%X not packetentities", cmd);
}
CL_ParsePacketEntities(old, &cl.frame);
/* save the frame off in the backup array for later delta comparisons */
cl.frames[cl.frame.serverframe & UPDATE_MASK] = cl.frame;
if (cl.frame.valid)
{
/* getting a valid frame message ends the connection process */
if (cls.state != ca_active)
{
cls.state = ca_active;
cl.force_refdef = true;
cl.predicted_origin[0] = cl.frame.playerstate.pmove.origin[0] * 0.125f;
cl.predicted_origin[1] = cl.frame.playerstate.pmove.origin[1] * 0.125f;
cl.predicted_origin[2] = cl.frame.playerstate.pmove.origin[2] * 0.125f;
VectorCopy(cl.frame.playerstate.viewangles, cl.predicted_angles);
if ((cls.disable_servercount != cl.servercount) && cl.refresh_prepped)
{
SCR_EndLoadingPlaque(); /* get rid of loading plaque */
}
cl.sound_prepped = true;
}
/* fire entity events */
CL_FireEntityEvents(&cl.frame);
if (!(!cl_predict->value ||
(cl.frame.playerstate.pmove.pm_flags &
PMF_NO_PREDICTION)))
{
CL_CheckPredictionError();
}
}
}
static void CL_ParseDemoSnapShotSimple(msg_t *msg)
{
int len;
clSnapshot_t *old;
clSnapshot_t newSnap;
int deltaNum;
int oldMessageNum;
int i, packetNum;
memset(&newSnap, 0, sizeof(newSnap));
newSnap.serverCommandNum = clc.serverCommandSequence;
newSnap.serverTime = MSG_ReadLong(msg);
newSnap.messageNum = clc.serverMessageSequence;
deltaNum = MSG_ReadByte(msg);
if (!deltaNum)
{
newSnap.deltaNum = -1;
}
else
{
newSnap.deltaNum = newSnap.messageNum - deltaNum;
}
newSnap.snapFlags = MSG_ReadByte(msg);
if (newSnap.deltaNum <= 0)
{
newSnap.valid = qtrue; // uncompressed frame
old = NULL;
}
else
{
old = &cl.snapshots[newSnap.deltaNum & PACKET_MASK];
if (!old->valid)
{
// should never happen
Com_FuncPrinf("Delta from invalid frame (not supposed to happen!).\n");
}
else if (old->messageNum != newSnap.deltaNum)
{
// The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_FuncPrinf("Delta frame too old.\n");
}
else if (cl.parseEntitiesNum - old->parseEntitiesNum > MAX_PARSE_ENTITIES - 128)
{
Com_FuncPrinf("Delta parseEntitiesNum too old.\n");
}
else
{
newSnap.valid = qtrue; // valid delta parse
}
}
// read areamask
len = MSG_ReadByte(msg);
if (len > sizeof(newSnap.areamask))
{
Com_FuncDrop("Invalid size %d for areamask.", len);
return;
}
MSG_ReadData(msg, &newSnap.areamask, len);
if (old)
{
MSG_ReadDeltaPlayerstate(msg, &old->ps, &newSnap.ps);
}
else
{
MSG_ReadDeltaPlayerstate(msg, NULL, &newSnap.ps);
}
// read packet entities
CL_ParsePacketEntities(msg, old, &newSnap);
// if not valid, dump the entire thing now that it has
// been properly read
if (!newSnap.valid)
{
return;
}
// clear the valid flags of any snapshots between the last
// received and this one, so if there was a dropped packet
// it won't look like something valid to delta from next
// time we wrap around in the buffer
oldMessageNum = cl.snap.messageNum + 1;
if (newSnap.messageNum - oldMessageNum >= PACKET_BACKUP)
{
oldMessageNum = newSnap.messageNum - (PACKET_BACKUP - 1);
}
for (; oldMessageNum < newSnap.messageNum; oldMessageNum++)
{
cl.snapshots[oldMessageNum & PACKET_MASK].valid = qfalse;
}
// copy to the current good spot
cl.snap = newSnap;
cl.snap.ping = 999;
// calculate ping time
for (i = 0; i < PACKET_BACKUP; i++)
{
packetNum = (clc.netchan.outgoingSequence - 1 - i) & PACKET_MASK;
if (cl.snap.ps.commandTime >= cl.outPackets[packetNum].p_serverTime)
{
cl.snap.ping = cls.realtime - cl.outPackets[packetNum].p_realtime;
break;
}
}
// save the frame off in the backup array for later delta comparisons
cl.snapshots[cl.snap.messageNum & PACKET_MASK] = cl.snap;
cl.newSnapshots = qtrue;
}
/*
================
CL_ParseSnapshot
If the snapshot is parsed properly, it will be copied to
cl.snap and saved in cl.snapshots[]. If the snapshot is invalid
for any reason, no changes to the state will be made at all.
================
*/
void CL_ParseSnapshot( msg_t *msg ) {
int len;
clSnapshot_t *old;
clSnapshot_t newSnap;
sharedPlayerState_t *newPS, *oldPS;
int deltaNum;
int oldMessageNum;
int i, packetNum;
if ( !cgvm ) {
Com_Error( ERR_DROP, "Received unexpected snapshot" );
}
if ( !cl.cgamePlayerStateSize || !cl.cgameEntityStateSize ) {
Com_Error( ERR_DROP, "cgame needs to call trap_SetNetFields" );
}
// get the reliable sequence acknowledge number
// NOTE: now sent with all server to client messages
//clc.reliableAcknowledge = MSG_ReadLong( msg );
// read in the new snapshot to a temporary buffer
// we will only copy to cl.snap if it is valid
Com_Memset (&newSnap, 0, sizeof(newSnap));
// we will have read any new server commands in this
// message before we got to svc_snapshot
newSnap.serverCommandNum = clc.serverCommandSequence;
newSnap.serverTime = MSG_ReadLong( msg );
// if we were just unpaused, we can only *now* really let the
// change come into effect or the client hangs.
cl_paused->modified = 0;
newSnap.messageNum = clc.serverMessageSequence;
deltaNum = MSG_ReadByte( msg );
if ( !deltaNum ) {
newSnap.deltaNum = -1;
} else {
newSnap.deltaNum = newSnap.messageNum - deltaNum;
}
newSnap.snapFlags = MSG_ReadByte( msg );
// If the frame is delta compressed from data that we
// no longer have available, we must suck up the rest of
// the frame, but not use it, then ask for a non-compressed
// message
if ( newSnap.deltaNum <= 0 ) {
newSnap.valid = qtrue; // uncompressed frame
old = NULL;
clc.demowaiting = qfalse; // we can start recording now
} else {
old = &cl.snapshots[newSnap.deltaNum & PACKET_MASK];
if ( !old->valid ) {
// should never happen
Com_Printf ("Delta from invalid frame (not supposed to happen!).\n");
} else if ( old->messageNum != newSnap.deltaNum ) {
// The frame that the server did the delta from
// is too old, so we can't reconstruct it properly.
Com_Printf ("Delta frame too old.\n");
} else if ( cl.parseEntitiesNum - old->parseEntitiesNum > cl.parseEntities.maxElements - MAX_SNAPSHOT_ENTITIES * CL_MAX_SPLITVIEW ) {
Com_Printf ("Delta parseEntitiesNum too old.\n");
} else {
newSnap.valid = qtrue; // valid delta parse
}
}
DA_Clear( &cl.tempSnapshotPS );
// read playerinfo
SHOWNET( msg, "playerstate" );
newSnap.numPSs = MSG_ReadByte( msg );
if (newSnap.numPSs > MAX_SPLITVIEW) {
Com_DPrintf(S_COLOR_YELLOW "Warning: Got numPSs as %d (max=%d)\n", newSnap.numPSs, MAX_SPLITVIEW);
newSnap.numPSs = MAX_SPLITVIEW;
}
for (i = 0; i < MAX_SPLITVIEW; i++) {
newSnap.localPlayerIndex[i] = MSG_ReadByte( msg );
newSnap.playerNums[i] = MSG_ReadByte( msg );
// -1 gets converted to 255 should be set to -1 (and so should all invalid values)
if ( newSnap.localPlayerIndex[i] >= newSnap.numPSs || newSnap.playerNums[i] >= MAX_CLIENTS ) {
newSnap.localPlayerIndex[i] = -1;
newSnap.playerNums[i] = -1;
}
// read areamask
len = MSG_ReadByte( msg );
if(len > sizeof(newSnap.areamask[0]))
{
Com_Error (ERR_DROP,"CL_ParseSnapshot: Invalid size %d for areamask", len);
return;
}
MSG_ReadData( msg, &newSnap.areamask[i], len);
}
for (i = 0; i < MAX_SPLITVIEW; i++) {
// Read player states
if (newSnap.localPlayerIndex[i] != -1) {
newPS = (sharedPlayerState_t *) DA_ElementPointer( cl.tempSnapshotPS, newSnap.localPlayerIndex[i] );
if ( old && old->valid && old->localPlayerIndex[i] != -1 ) {
oldPS = (sharedPlayerState_t *) DA_ElementPointer( old->playerStates, old->localPlayerIndex[i] );
MSG_ReadDeltaPlayerstate( msg, oldPS, newPS, newSnap.playerNums[i] );
} else {
MSG_ReadDeltaPlayerstate( msg, NULL, newPS, newSnap.playerNums[i] );
}
}
// Server added or removed local player
if ( old && old->playerNums[i] != newSnap.playerNums[i] ) {
CL_LocalPlayerRemoved( i );
if ( newSnap.playerNums[i] != -1 ) {
CL_LocalPlayerAdded( i, newSnap.playerNums[i] );
}
}
}
// read packet entities
SHOWNET( msg, "packet entities" );
CL_ParsePacketEntities( msg, old, &newSnap );
// if not valid, dump the entire thing now that it has
// been properly read
if ( !newSnap.valid ) {
return;
}
// clear the valid flags of any snapshots between the last
// received and this one, so if there was a dropped packet
// it won't look like something valid to delta from next
// time we wrap around in the buffer
oldMessageNum = cl.snap.messageNum + 1;
if ( newSnap.messageNum - oldMessageNum >= PACKET_BACKUP ) {
oldMessageNum = newSnap.messageNum - ( PACKET_BACKUP - 1 );
}
for ( ; oldMessageNum < newSnap.messageNum ; oldMessageNum++ ) {
cl.snapshots[oldMessageNum & PACKET_MASK].valid = qfalse;
}
// copy player states from temp to snapshot
DA_Copy( cl.tempSnapshotPS, &cl.snapshots[newSnap.messageNum & PACKET_MASK].playerStates );
newSnap.playerStates = cl.snapshots[newSnap.messageNum & PACKET_MASK].playerStates;
// copy to the current good spot
cl.snap = newSnap;
cl.snap.ping = 999;
// calculate ping time
for ( i = 0 ; i < PACKET_BACKUP ; i++ ) {
packetNum = ( clc.netchan.outgoingSequence - 1 - i ) & PACKET_MASK;
newPS = (sharedPlayerState_t *) DA_ElementPointer( cl.snap.playerStates, 0 );
if ( newPS->commandTime >= cl.outPackets[ packetNum ].p_serverTime ) {
cl.snap.ping = cls.realtime - cl.outPackets[ packetNum ].p_realtime;
break;
}
}
// save the frame off in the backup array for later delta comparisons
cl.snapshots[cl.snap.messageNum & PACKET_MASK] = cl.snap;
if (cl_shownet->integer == 3) {
Com_Printf( " snapshot:%i delta:%i ping:%i\n", cl.snap.messageNum,
cl.snap.deltaNum, cl.snap.ping );
}
cl.newSnapshots = qtrue;
}