/*
=================
FlushEntityPacket
=================
*/
void FlushEntityPacket (void)
{
int word;
entity_state_t olde, newe;
Con_DPrintf ("FlushEntityPacket\n");
memset (&olde, 0, sizeof(olde));
cl.validsequence = 0; // can't render a frame
cl.frames[cls.netchan.incoming_sequence&UPDATE_MASK].invalid = true;
// read it all, but ignore it
while (1)
{
word = (unsigned short)MSG_ReadShort ();
if (msg_badread)
{ // something didn't parse right...
Host_EndGame ("msg_badread in packetentities");
return;
}
if (!word)
break; // done
CL_ParseDelta (&olde, &newe, word);
}
}
/*
* Parses deltas from the given base and adds the resulting entity to
* the current frame
*/
void
CL_DeltaEntity(frame_t *frame, int newnum, entity_state_t *old, int bits)
{
centity_t *ent;
entity_state_t *state;
ent = &cl_entities[newnum];
state = &cl_parse_entities[cl.parse_entities & (MAX_PARSE_ENTITIES - 1)];
cl.parse_entities++;
frame->num_entities++;
CL_ParseDelta(old, state, newnum, bits);
/* some data changes will force no lerping */
if ((state->modelindex != ent->current.modelindex) ||
(state->modelindex2 != ent->current.modelindex2) ||
(state->modelindex3 != ent->current.modelindex3) ||
(state->modelindex4 != ent->current.modelindex4) ||
(state->event == EV_PLAYER_TELEPORT) ||
(state->event == EV_OTHER_TELEPORT) ||
(abs((int)(state->origin[0] - ent->current.origin[0])) > 512) ||
(abs((int)(state->origin[1] - ent->current.origin[1])) > 512) ||
(abs((int)(state->origin[2] - ent->current.origin[2])) > 512)
)
{
ent->serverframe = -99;
}
/* wasn't in last update, so initialize some things */
if (ent->serverframe != cl.frame.serverframe - 1)
{
ent->trailcount = 1024; /* for diminishing rocket / grenade trails */
/* duplicate the current state so
lerping doesn't hurt anything */
ent->prev = *state;
if (state->event == EV_OTHER_TELEPORT)
{
VectorCopy(state->origin, ent->prev.origin);
VectorCopy(state->origin, ent->lerp_origin);
}
else
{
VectorCopy(state->old_origin, ent->prev.origin);
VectorCopy(state->old_origin, ent->lerp_origin);
}
}
else
{
/* shuffle the last state to previous */
ent->prev = ent->current;
}
ent->serverframe = cl.frame.serverframe;
ent->current = *state;
}
/*
==================
CL_ParseBaseline
==================
*/
void CL_ParseBaseline (void)
{
entity_state_t *es;
uint32 bits;
int newnum;
newnum = CL_ParseEntityBits (&bits);
es = &cl_entities[newnum].baseline;
CL_ParseDelta (&null_entity_state, es, newnum, bits);
}
/*
==================
CL_ParseBaseline
==================
*/
void CL_ParseBaseline(void)
{
entity_state_t * es;
int bits;
int newnum;
entity_state_t nullstate;
memset(&nullstate, 0, sizeof(nullstate));
newnum = CL_ParseEntityBits(&bits);
es = &cl_entities[newnum].baseline;
CL_ParseDelta(&nullstate, es, newnum, bits);
}
/*
==================
CL_ParsePacketEntities
An svc_packetentities has just been parsed, deal with the
rest of the data stream.
==================
*/
void CL_ParsePacketEntities (qboolean delta)
{
int oldpacket, newpacket;
packet_entities_t *oldp, *newp, dummy;
int oldindex, newindex;
int word, newnum, oldnum;
qboolean full;
byte from;
newpacket = cls.netchan.incoming_sequence&UPDATE_MASK;
newp = &cl.frames[newpacket].packet_entities;
cl.frames[newpacket].invalid = false;
if (delta)
{
from = MSG_ReadByte ();
oldpacket = cl.frames[newpacket].delta_sequence;
if ( (from&UPDATE_MASK) != (oldpacket&UPDATE_MASK) )
Con_DPrintf ("WARNING: from mismatch\n");
}
else
oldpacket = -1;
full = false;
if (oldpacket != -1)
{
if (cls.netchan.outgoing_sequence - oldpacket >= UPDATE_BACKUP-1)
{ // we can't use this, it is too old
FlushEntityPacket ();
return;
}
cl.validsequence = cls.netchan.incoming_sequence;
oldp = &cl.frames[oldpacket&UPDATE_MASK].packet_entities;
}
else
{ // this is a full update that we can start delta compressing from now
oldp = &dummy;
dummy.num_entities = 0;
cl.validsequence = cls.netchan.incoming_sequence;
full = true;
}
oldindex = 0;
newindex = 0;
newp->num_entities = 0;
while (1)
{
word = (unsigned short)MSG_ReadShort ();
if (msg_badread)
{ // something didn't parse right...
Host_EndGame ("msg_badread in packetentities");
return;
}
if (!word)
{
while (oldindex < oldp->num_entities)
{ // copy all the rest of the entities from the old packet
//Con_Printf ("copy %i\n", oldp->entities[oldindex].number);
if (newindex >= MAX_PACKET_ENTITIES)
Host_EndGame ("CL_ParsePacketEntities: newindex == MAX_PACKET_ENTITIES ... 1");
newp->entities[newindex] = oldp->entities[oldindex];
newindex++;
oldindex++;
}
break;
}
newnum = word&511;
oldnum = oldindex >= oldp->num_entities ? 9999 : oldp->entities[oldindex].number;
while (newnum > oldnum)
{
if (full)
{
Con_Printf ("WARNING: oldcopy on full update");
FlushEntityPacket ();
return;
}
//Con_Printf ("copy %i\n", oldnum);
// copy one of the old entities over to the new packet unchanged
if (newindex >= MAX_PACKET_ENTITIES)
Host_EndGame ("CL_ParsePacketEntities: newindex == MAX_PACKET_ENTITIES ... 2");
newp->entities[newindex] = oldp->entities[oldindex];
newindex++;
oldindex++;
oldnum = oldindex >= oldp->num_entities ? 9999 : oldp->entities[oldindex].number;
}
if (newnum < oldnum)
{ // new from baseline
//Con_Printf ("baseline %i\n", newnum);
if (word & U_REMOVE)
{
if (full)
{
cl.validsequence = 0;
Con_Printf ("WARNING: U_REMOVE on full update\n");
FlushEntityPacket ();
return;
}
continue;
}
if (newindex >= MAX_PACKET_ENTITIES)
Host_EndGame ("CL_ParsePacketEntities: newindex == MAX_PACKET_ENTITIES ... 3");
CL_ParseDelta (&cl_baselines[newnum], &newp->entities[newindex], word);
newindex++;
continue;
}
if (newnum == oldnum)
{ // delta from previous
if (full)
{
cl.validsequence = 0;
Con_Printf ("WARNING: delta on full update");
}
if (word & U_REMOVE)
{
oldindex++;
continue;
}
//Con_Printf ("delta %i\n",newnum);
CL_ParseDelta (&oldp->entities[oldindex], &newp->entities[newindex], word);
newindex++;
oldindex++;
}
}
newp->num_entities = newindex;
}