I would like to point out that the primary performance issues induced by the
multiplayer system relate to loading new models when new people join (some
of the aircraft are quite complex and large). There are probably secondary
performance issues with rendering a large number of different MP aircraft
(texture paging?) Also, if MP aircraft continue to execute all their
associated nasal scripts, there could be a potentially large amount of time
that gets spent executing all those scripts.
We certainly do need to think about the MP system as we move forward, but
the bulk of the problem is in loading new aircraft when new people join, and
that is always going to be an issue unless we somehow are able to come up
with a lower LOD version of every aircraft for use in the MP system ... and
only that lower LOD is actually loaded and used.
Regards,
Curt.
On Sat, Mar 15, 2008 at 2:44 PM, Georg Vollnhals wrote:
> Curtis Olson schrieb:
> > ...
> ...
> ...
> >
> > Just tossing ideas and comments your direction ... :-) Great work,
> > this is exciting stuff!
> >
> > Regards,
> >
> > Curt.
> > --
> Hi,
>
> getting more and more features into the multiplayer system is really
> great - the only limiting factor is the causing desaster by design.
> At the moment I get an enormous impact on the controllabilty of my
> aircraft when flying an area with a lot of other mp-participants. If you
> are landing with a helicopter or even hovering your a/c gets nearly
> uncontrollable. That is the reason I gave up joining the mp-system as it
> is only fun if you are flying an area where other mp-user are.
>
> It is caused by bad design. The local FDM and Display Systems MUST KEEP
> PRIORITY against the updating of the mp-system, ie. other mp-aircraft,
> positions, movement, etc. Even if this causes some jumpy display of
> other mp-objects.
> That is why there should be a better splitting and limiting of the
> processortime the MP-SYSTEM has available against that of the
> FDM/DISPLAY SYSTEM of the local running FlightGear.
> I don't know how difficult it is to realize such an intelligent
> "time-slicing" with privilege to the FDM and display of the local
> aircraft but it gets more and more important with an increasing number
> of mp-users and new features.
>
> Just my thoughts. I know that there are some arguments against my
> proposals, ie. towing, formation flying or push-back is only possible if
> there is a good realtime display of the other party. But retaining
> control over the own aircraft is more important after my opinion.
>
> Regards
> Georg EDDW
>
>
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--
Curtis Olson: http://baron.flightgear.org/~curt/
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