/*
==================
SV_WriteEntitiesToClient
==================
*/
void SV_WriteEntitiesToClient( sv_client_t *cl, sizebuf_t *msg )
{
edict_t *clent;
edict_t *viewent; // may be NULL
client_frame_t *frame;
entity_state_t *state;
static sv_ents_t frame_ents;
int i, send_pings;
clent = cl->edict;
if( !SV_IsValidEdict( clent ) )
{
SV_DropClient ( cl );
return;
}
viewent = cl->pViewEntity; // himself or trigger_camera
frame = &cl->frames[cl->netchan.outgoing_sequence & SV_UPDATE_MASK];
send_pings = SV_ShouldUpdatePing( cl );
sv.net_framenum++; // now all portal-through entities are invalidate
sv.hostflags &= ~SVF_PORTALPASS;
// clear everything in this snapshot
frame_ents.num_entities = c_fullsend = 0;
// add all the entities directly visible to the eye, which
// may include portal entities that merge other viewpoints
SV_AddEntitiesToPacket( viewent, clent, frame, &frame_ents );
// if there were portals visible, there may be out of order entities
// in the list which will need to be resorted for the delta compression
// to work correctly. This also catches the error condition
// of an entity being included twice.
qsort( frame_ents.entities, frame_ents.num_entities, sizeof( frame_ents.entities[0] ), SV_EntityNumbers );
// copy the entity states out
frame->num_entities = 0;
frame->first_entity = svs.next_client_entities;
for( i = 0; i < frame_ents.num_entities; i++ )
{
// add it to the circular packet_entities array
state = &svs.packet_entities[svs.next_client_entities % svs.num_client_entities];
*state = frame_ents.entities[i];
svs.next_client_entities++;
// this should never hit, map should always be restarted first in SV_Frame
if( svs.next_client_entities >= 0x7FFFFFFE )
Host_Error( "svs.next_client_entities wrapped\n" );
frame->num_entities++;
}
SV_EmitPacketEntities( cl, frame, msg );
SV_EmitEvents( cl, frame, msg );
if( send_pings ) SV_EmitPings( msg );
}
/*
==================
SV_WriteSnapshotToClient
==================
*/
static void SV_WriteSnapshotToClient(client_t *client, msg_t *msg)
{
clientSnapshot_t *frame, *oldframe;
int lastframe;
int i;
int snapFlags;
// this is the snapshot we are creating
frame = &client->frames[client->netchan.outgoingSequence & PACKET_MASK];
// try to use a previous frame as the source for delta compressing the snapshot
if (client->deltaMessage <= 0 || client->state != CS_ACTIVE)
{
// client is asking for a retransmit
oldframe = NULL;
lastframe = 0;
}
else if (client->netchan.outgoingSequence - client->deltaMessage >= (PACKET_BACKUP - 3))
{
// client hasn't gotten a good message through in a long time
Com_DPrintf("%s: Delta request from out of date packet.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
else
{
// we have a valid snapshot to delta from
oldframe = &client->frames[client->deltaMessage & PACKET_MASK];
lastframe = client->netchan.outgoingSequence - client->deltaMessage;
// the snapshot's entities may still have rolled off the buffer, though
if (oldframe->first_entity <= svs.nextSnapshotEntities - svs.numSnapshotEntities)
{
Com_DPrintf("%s: Delta request from out of date entities.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
}
MSG_WriteByte(msg, svc_snapshot);
// NOTE, MRE: now sent at the start of every message from server to client
// let the client know which reliable clientCommands we have received
// MSG_WriteLong( msg, client->lastClientCommand );
// send over the current server time so the client can drift
// its view of time to try to match
if (client->oldServerTime)
{
// The server has not yet got an acknowledgement of the
// new gamestate from this client, so continue to send it
// a time as if the server has not restarted. Note from
// the client's perspective this time is strictly speaking
// incorrect, but since it'll be busy loading a map at
// the time it doesn't really matter.
MSG_WriteLong(msg, sv.time + client->oldServerTime);
}
else
{
MSG_WriteLong(msg, sv.time);
}
// what we are delta'ing from
MSG_WriteByte(msg, lastframe);
snapFlags = svs.snapFlagServerBit;
if (client->rateDelayed)
{
snapFlags |= SNAPFLAG_RATE_DELAYED;
}
if (client->state != CS_ACTIVE)
{
snapFlags |= SNAPFLAG_NOT_ACTIVE;
}
MSG_WriteByte(msg, snapFlags);
// send over the areabits
MSG_WriteByte(msg, frame->areabytes);
MSG_WriteData(msg, frame->areabits, frame->areabytes);
// delta encode the playerstate
if (oldframe)
{
MSG_WriteDeltaPlayerstate(client->netchan.alternateProtocol, msg, &oldframe->ps, &frame->ps);
}
else
{
MSG_WriteDeltaPlayerstate(client->netchan.alternateProtocol, msg, NULL, &frame->ps);
}
// delta encode the entities
SV_EmitPacketEntities(client->netchan.alternateProtocol, oldframe, frame, msg);
// padding for rate debugging
if (sv_padPackets->integer)
{
for (i = 0; i < sv_padPackets->integer; i++)
{
MSG_WriteByte(msg, svc_nop);
}
}
}
/*
==================
SV_WriteSnapshotToClient
==================
*/
static void SV_WriteSnapshotToClient( client_t *client, msg_t *msg ) {
clientSnapshot_t *frame, *oldframe;
int lastframe;
int snapFlags;
// this is the snapshot we are creating
frame = &client->frames[ client->netchan.outgoingSequence & PACKET_MASK ];
// try to use a previous frame as the source for delta compressing the snapshot
if ( client->deltaMessage <= 0 || client->state != CS_ACTIVE ) {
// client is asking for a retransmit
oldframe = NULL;
lastframe = 0;
} else if ( client->netchan.outgoingSequence - client->deltaMessage
>= (PACKET_BACKUP - 3) ) {
// client hasn't gotten a good message through in a long time
Com_DPrintf ("%s: Delta request from out of date packet.\n", client->name);
oldframe = NULL;
lastframe = 0;
} else {
// we have a valid snapshot to delta from
oldframe = &client->frames[ client->deltaMessage & PACKET_MASK ];
lastframe = client->netchan.outgoingSequence - client->deltaMessage;
// the snapshot's entities may still have rolled off the buffer, though
if ( oldframe->first_entity <= svs.nextSnapshotEntities - svs.numSnapshotEntities ) {
Com_DPrintf ("%s: Delta request from out of date entities.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
}
MSG_WriteByte (msg, svc_snapshot);
// let the client know which reliable clientCommands we have received
MSG_WriteLong( msg, client->lastClientCommand );
// send over the current server time so the client can drift
// its view of time to try to match
MSG_WriteLong (msg, sv.time);
// we must write a message number, because recorded demos won't have
// the same network message sequences
MSG_WriteLong (msg, client->netchan.outgoingSequence );
MSG_WriteByte (msg, lastframe); // what we are delta'ing from
MSG_WriteLong (msg, client->cmdNum); // we have executed up to here
snapFlags = client->rateDelayed | ( client->droppedCommands << 1 );
client->droppedCommands = 0;
MSG_WriteByte (msg, snapFlags);
// send over the areabits
MSG_WriteByte (msg, frame->areabytes);
MSG_WriteData (msg, frame->areabits, frame->areabytes);
// delta encode the playerstate
if ( oldframe ) {
MSG_WriteDeltaPlayerstate( msg, &oldframe->ps, &frame->ps );
} else {
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->ps );
}
// delta encode the entities
SV_EmitPacketEntities (oldframe, frame, msg);
}
/*
==================
SV_WriteSnapshotToClient
==================
*/
static void SV_WriteSnapshotToClient( client_t *client, msg_t *msg ) {
clientSnapshot_t *frame, *oldframe;
int lastframe;
int i;
int snapFlags;
// this is the snapshot we are creating
frame = &client->frames[ client->netchan.outgoingSequence & PACKET_MASK ];
// try to use a previous frame as the source for delta compressing the snapshot
if ( client->deltaMessage <= 0 || client->state != CS_ACTIVE ) {
// client is asking for a retransmit
oldframe = NULL;
lastframe = 0;
} else if ( client->netchan.outgoingSequence - client->deltaMessage
>= (PACKET_BACKUP - 3) ) {
// client hasn't gotten a good message through in a long time
Com_DPrintf ("%s: Delta request from out of date packet.\n", client->name);
oldframe = NULL;
lastframe = 0;
} else {
// we have a valid snapshot to delta from
oldframe = &client->frames[ client->deltaMessage & PACKET_MASK ];
lastframe = client->netchan.outgoingSequence - client->deltaMessage;
// the snapshot's entities may still have rolled off the buffer, though
if ( oldframe->first_entity <= svs.nextSnapshotEntities - svs.numSnapshotEntities ) {
Com_DPrintf ("%s: Delta request from out of date entities.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
}
MSG_WriteByte (msg, svc_snapshot);
// NOTE, MRE: now sent at the start of every message from server to client
// let the client know which reliable clientCommands we have received
//MSG_WriteLong( msg, client->lastClientCommand );
// send over the current server time so the client can drift
// its view of time to try to match
MSG_WriteLong (msg, svs.time);
// what we are delta'ing from
MSG_WriteByte (msg, lastframe);
snapFlags = svs.snapFlagServerBit;
if ( client->rateDelayed ) {
snapFlags |= SNAPFLAG_RATE_DELAYED;
}
if ( client->state != CS_ACTIVE ) {
snapFlags |= SNAPFLAG_NOT_ACTIVE;
}
MSG_WriteByte (msg, snapFlags);
// send over the areabits
MSG_WriteByte (msg, frame->areabytes);
MSG_WriteData (msg, frame->areabits, frame->areabytes);
// delta encode the playerstate
if ( oldframe ) {
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, &oldframe->ps, &frame->ps, frame->pDeltaOneBit, frame->pDeltaNumBit );
#else
MSG_WriteDeltaPlayerstate( msg, &oldframe->ps, &frame->ps );
#endif
if (frame->ps.m_iVehicleNum)
{ //then write the vehicle's playerstate too
if (!oldframe->ps.m_iVehicleNum)
{ //if last frame didn't have vehicle, then the old vps isn't gonna delta
//properly (because our vps on the client could be anything)
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, NULL, NULL, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, qtrue );
#endif
}
else
{
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, &oldframe->vps, &frame->vps, frame->pDeltaOneBitVeh, frame->pDeltaNumBitVeh, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, &oldframe->vps, &frame->vps, qtrue );
#endif
}
}
} else {
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->ps, NULL, NULL );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->ps );
#endif
if (frame->ps.m_iVehicleNum)
{ //then write the vehicle's playerstate too
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, NULL, NULL, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, qtrue );
#endif
}
}
// delta encode the entities
SV_EmitPacketEntities (oldframe, frame, msg);
// padding for rate debugging
if ( sv_padPackets->integer ) {
for ( i = 0 ; i < sv_padPackets->integer ; i++ ) {
MSG_WriteByte (msg, svc_nop);
}
}
}
/*
==================
SV_WriteSnapshotToClient
==================
*/
static void SV_WriteSnapshotToClient( client_t *client, msg_t *msg ) {
clientSnapshot_t *frame, *oldframe;
int lastframe;
int i;
int snapFlags;
int deltaMessage;
// this is the snapshot we are creating
frame = &client->frames[ client->netchan.outgoingSequence & PACKET_MASK ];
// bots never acknowledge, but it doesn't matter since the only use case is for serverside demos
// in which case we can delta against the very last message every time
deltaMessage = client->deltaMessage;
if ( client->demo.isBot ) {
client->deltaMessage = client->netchan.outgoingSequence;
}
// try to use a previous frame as the source for delta compressing the snapshot
if ( deltaMessage <= 0 || client->state != CS_ACTIVE ) {
// client is asking for a retransmit
oldframe = NULL;
lastframe = 0;
} else if ( client->netchan.outgoingSequence - deltaMessage
>= (PACKET_BACKUP - 3) ) {
// client hasn't gotten a good message through in a long time
Com_DPrintf ("%s: Delta request from out of date packet.\n", client->name);
oldframe = NULL;
lastframe = 0;
} else if ( client->demo.demorecording && client->demo.demowaiting ) {
// demo is waiting for a non-delta-compressed frame for this client, so don't delta compress
oldframe = NULL;
lastframe = 0;
} else if ( client->demo.minDeltaFrame > deltaMessage ) {
// we saved a non-delta frame to the demo and sent it to the client, but the client didn't ack it
// we can't delta against an old frame that's not in the demo without breaking the demo. so send
// non-delta frames until the client acks.
oldframe = NULL;
lastframe = 0;
} else {
// we have a valid snapshot to delta from
oldframe = &client->frames[ deltaMessage & PACKET_MASK ];
lastframe = client->netchan.outgoingSequence - deltaMessage;
// the snapshot's entities may still have rolled off the buffer, though
if ( oldframe->first_entity <= svs.nextSnapshotEntities - svs.numSnapshotEntities ) {
Com_DPrintf ("%s: Delta request from out of date entities.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
}
if ( oldframe == NULL ) {
if ( client->demo.demowaiting ) {
// this is a non-delta frame, so we can delta against it in the demo
client->demo.minDeltaFrame = client->netchan.outgoingSequence;
}
client->demo.demowaiting = qfalse;
}
MSG_WriteByte (msg, svc_snapshot);
// NOTE, MRE: now sent at the start of every message from server to client
// let the client know which reliable clientCommands we have received
//MSG_WriteLong( msg, client->lastClientCommand );
// send over the current server time so the client can drift
// its view of time to try to match
if( client->oldServerTime &&
!( client->demo.demorecording && client->demo.isBot ) ) {
// The server has not yet got an acknowledgement of the
// new gamestate from this client, so continue to send it
// a time as if the server has not restarted. Note from
// the client's perspective this time is strictly speaking
// incorrect, but since it'll be busy loading a map at
// the time it doesn't really matter.
MSG_WriteLong (msg, sv.time + client->oldServerTime);
} else {
MSG_WriteLong (msg, sv.time);
}
// what we are delta'ing from
MSG_WriteByte (msg, lastframe);
snapFlags = svs.snapFlagServerBit;
if ( client->rateDelayed ) {
snapFlags |= SNAPFLAG_RATE_DELAYED;
}
if ( client->state != CS_ACTIVE ) {
snapFlags |= SNAPFLAG_NOT_ACTIVE;
}
MSG_WriteByte (msg, snapFlags);
// send over the areabits
MSG_WriteByte (msg, frame->areabytes);
MSG_WriteData (msg, frame->areabits, frame->areabytes);
// delta encode the playerstate
if ( oldframe ) {
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, &oldframe->ps, &frame->ps, frame->pDeltaOneBit, frame->pDeltaNumBit );
#else
MSG_WriteDeltaPlayerstate( msg, &oldframe->ps, &frame->ps );
#endif
if (frame->ps.m_iVehicleNum)
{ //then write the vehicle's playerstate too
if (!oldframe->ps.m_iVehicleNum)
{ //if last frame didn't have vehicle, then the old vps isn't gonna delta
//properly (because our vps on the client could be anything)
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, NULL, NULL, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, qtrue );
#endif
}
else
{
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, &oldframe->vps, &frame->vps, frame->pDeltaOneBitVeh, frame->pDeltaNumBitVeh, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, &oldframe->vps, &frame->vps, qtrue );
#endif
}
}
} else {
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->ps, NULL, NULL );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->ps );
#endif
if (frame->ps.m_iVehicleNum)
{ //then write the vehicle's playerstate too
#ifdef _ONEBIT_COMBO
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, NULL, NULL, qtrue );
#else
MSG_WriteDeltaPlayerstate( msg, NULL, &frame->vps, qtrue );
#endif
}
}
// delta encode the entities
SV_EmitPacketEntities (oldframe, frame, msg);
// padding for rate debugging
if ( sv_padPackets->integer ) {
for ( i = 0 ; i < sv_padPackets->integer ; i++ ) {
MSG_WriteByte (msg, svc_nop);
}
}
}
/*
==================
SV_WriteSnapshotToClient
==================
*/
static void SV_WriteSnapshotToClient(client_t *client, msg_t *msg)
{
clientSnapshot_t *frame, *oldframe;
int lastframe;
int snapFlags;
// this is the snapshot we are creating
frame = &client->frames[client->netchan.outgoingSequence & PACKET_MASK];
// try to use a previous frame as the source for delta compressing the snapshot
if (client->deltaMessage <= 0 || client->state != CS_ACTIVE)
{
// client is asking for a retransmit
oldframe = NULL;
lastframe = 0;
}
else if (client->netchan.outgoingSequence - client->deltaMessage >= (PACKET_BACKUP - 3))
{
// client hasn't gotten a good message through in a long time
Com_DPrintf("%s: Delta request from out of date packet.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
else
{
// we have a valid snapshot to delta from
oldframe = &client->frames[client->deltaMessage & PACKET_MASK];
lastframe = client->netchan.outgoingSequence - client->deltaMessage;
// the snapshot's entities may still have rolled off the buffer, though
if (oldframe->first_entity <= svs.nextSnapshotEntities - svs.numSnapshotEntities)
{
Com_DPrintf("%s: Delta request from out of date entities.\n", client->name);
oldframe = NULL;
lastframe = 0;
}
}
MSG_WriteByte(msg, svc_snapshot);
// NOTE, MRE: now sent at the start of every message from server to client
// let the client know which reliable clientCommands we have received
//MSG_WriteLong( msg, client->lastClientCommand );
// send over the current server time so the client can drift
// its view of time to try to match
MSG_WriteLong(msg, svs.time);
// what we are delta'ing from
MSG_WriteByte(msg, lastframe);
snapFlags = svs.snapFlagServerBit;
if (client->rateDelayed)
{
snapFlags |= SNAPFLAG_RATE_DELAYED;
}
if (client->state != CS_ACTIVE)
{
snapFlags |= SNAPFLAG_NOT_ACTIVE;
}
MSG_WriteByte(msg, snapFlags);
// send over the areabits
MSG_WriteByte(msg, frame->areabytes);
MSG_WriteData(msg, frame->areabits, frame->areabytes);
//{
//int sz = msg->cursize;
//int usz = msg->uncompsize;
// delta encode the playerstate
if (oldframe)
{
MSG_WriteDeltaPlayerstate(msg, &oldframe->ps, &frame->ps);
}
else
{
MSG_WriteDeltaPlayerstate(msg, NULL, &frame->ps);
}
//Com_Printf( "Playerstate delta size: %f\n", ((msg->cursize - sz) * sv_fps->integer) / 8.f );
//}
// delta encode the entities
SV_EmitPacketEntities(oldframe, frame, msg);
// padding for rate debugging
if (sv_padPackets->integer)
{
int i;
for (i = 0 ; i < sv_padPackets->integer ; i++)
{
MSG_WriteByte(msg, svc_nop);
}
}
}
/*
==================
SV_WriteFrameToClient
==================
*/
void SV_WriteFrameToClient( sv_client_t *cl, sizebuf_t *msg )
{
client_frame_t *frame, *oldframe;
int lastframe;
// this is the frame we are creating
frame = &cl->frames[sv.framenum & SV_UPDATE_MASK];
if( cl->lastframe <= 0 )
{
// client is asking for a retransmit
oldframe = NULL;
lastframe = -1;
}
else if( sv.framenum - cl->lastframe >= (SV_UPDATE_BACKUP - 3))
{
// client hasn't gotten a good message through in a long time
oldframe = NULL;
lastframe = -1;
}
else
{ // we have a valid message to delta from
oldframe = &cl->frames[cl->lastframe & SV_UPDATE_MASK];
lastframe = cl->lastframe;
// the snapshot's entities may still have rolled off the buffer, though
if( oldframe->first_entity <= svs.next_client_entities - svs.num_client_entities )
{
MsgDev( D_WARN, "%s: ^7delta request from out of date entities.\n", cl->name );
oldframe = NULL;
lastframe = 0;
}
}
// refresh physinfo if needs
if( cl->physinfo_modified )
{
cl->physinfo_modified = false;
MSG_WriteByte( msg, svc_physinfo );
MSG_WriteString( msg, cl->physinfo );
}
// delta encode the events
SV_EmitEvents( cl, frame, msg );
MSG_WriteByte( msg, svc_frame );
MSG_WriteLong( msg, sv.framenum );
MSG_WriteLong( msg, sv.time ); // send a servertime each frame
MSG_WriteLong( msg, sv.frametime );
MSG_WriteLong( msg, lastframe ); // what we are delta'ing from
MSG_WriteByte( msg, cl->surpressCount ); // rate dropped packets
MSG_WriteByte( msg, frame->index ); // send a client index
cl->surpressCount = 0;
// send over the areabits
MSG_WriteByte( msg, frame->areabits_size ); // never more than 255 bytes
MSG_WriteData( msg, frame->areabits, frame->areabits_size );
// delta encode the entities
SV_EmitPacketEntities( oldframe, frame, msg );
}
