-void EntityFrameCSQC_WriteState (sizebuf_t *msg, int maxsize, int number, qboolean doupdate, qboolean *sectionstarted)
-{
- int version;
- prvm_eval_t *val, *val2;
- version = 0;
- if (doupdate)
- {
- if (msg->cursize + !*sectionstarted + 2 + 1 + 2 > maxsize)
- return;
- val2 = PRVM_EDICTFIELDVALUE((&prog->edicts[number]), prog->fieldoffsets.Version);
- version = (int)val2->_float;
- // LordHavoc: do some validity checks on self.Version
- // if self.Version reaches 255, it will soon exceed the byte used to
- // store an entity version in the client struct, so we need to reset
- // all the version to 1 and force all the existing clients' version of
- // it to 255 (which we're not allowing to actually occur)
- if (version < 0)
- val2->_float = 0;
- if (version >= 255)
- {
- int i;
- val2->_float = version = 1;
- // since we just reset the Version field to 1, it may accidentally
- // end up being equal to an existing client version now or in the
- // future, so to fix this situation we have to loop over all
- // clients and change their versions for this entity to be -1
- // which never matches, thus causing them to receive the update
- // soon, as they should
- for (i = 0;i < svs.maxclients;i++)
- if (svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number])
- svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number] = 255;
- }
- }
- // if the version already matches, we don't need to do anything as the
- // latest version has already been sent.
- if (svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number] == version)
- return;
- if (version)
- {
- // if there's no SendEntity function, treat it as a remove
- val = PRVM_EDICTFIELDVALUE((&prog->edicts[number]), prog->fieldoffsets.SendEntity);
- if (val->function)
- {
- // there is a function to call, save the cursize value incase we
- // have to do a rollback due to overflow
- int oldcursize = msg->cursize;
- if(!*sectionstarted)
- MSG_WriteByte(msg, svc_csqcentities);
- MSG_WriteShort(msg, number);
- msg->allowoverflow = true;
- PRVM_G_INT(OFS_PARM0) = sv.writeentitiestoclient_cliententitynumber;
- prog->globals.server->self = number;
- PRVM_ExecuteProgram(val->function, "Null SendEntity\n");
- msg->allowoverflow = false;
- if(PRVM_G_FLOAT(OFS_RETURN))
- {
- if (msg->cursize + 2 > maxsize)
- {
- // if the packet no longer has enough room to write the
- // final index code that ends the message, rollback to the
- // state before we tried to write anything and then return
- msg->cursize = oldcursize;
- msg->overflowed = false;
- return;
- }
- // an update has been successfully written, update the version
- svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number] = version;
- // and take note that we have begun the svc_csqcentities
- // section of the packet
- *sectionstarted = 1;
- return;
- }
- else
- {
- // rollback the buffer to its state before the writes
- msg->cursize = oldcursize;
- msg->overflowed = false;
- // if the function returned FALSE, simply write a remove
- // this is done by falling through to the remove code below
- version = 0;
- }
- }
- }
- // write a remove message if needed
- // if already removed, do nothing
- if (!svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number])
- return;
- // if there isn't enough room to write the remove message, just return, as
- // it will be handled in a later packet
- if (msg->cursize + !*sectionstarted + 2 + 2 > maxsize)
- return;
- // first write the message identifier if needed
- if(!*sectionstarted)
- {
- *sectionstarted = 1;
- MSG_WriteByte(msg, svc_csqcentities);
- }
- // write the remove message
- MSG_WriteShort(msg, (unsigned short)number | 0x8000);
- svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[number] = 0;
-}
-