RE: [MUD-Dev] Client side prediction

["Koster, Raph" <rkoster#origin,ea.com>]

> -----Original Message-----
> From: Ola Fosheim Grøstad [mailto:olag#ifi,uio.no]
> Sent: Sunday, February 20, 2000 6:24 AM
> To: mud-dev#kanga,nu
> Subject: [MUD-Dev] Client side prediction
> 
> 
> "Dr. Cat" wrote:
> > have a bunch of overhead issues tile based worlds don't.  
> (Though I wonder
> > how many of them do things like conserving bandwidth by using dead
> > reckoning and only sending a packet when the client's 
> expected prediction
> > will be too far form the actual correct position.)
> 
> Are you by "dead reckoning" suggesting implementing all the physics in
> the client? I've spent too much time thinking about this, and I've
> reached the conclusion that the problems that are associated with this
> approach are too many and the benefits are too few.

You should look at what games like Air Warrior and Warbirds do. There's
well-known solutions out there for minimizing bandwidth and using dead
reckoning. The issues you describe mostly don't apply...

> Basically, when you start to think in that direction you will 
> be driven
> towards activities that are disjoint, that doesn't require 
> syncing, that
> doesn't depend on what other people do. That's no good if user-user
> interaction is the main goal.

There's a ton of stuff that you don't need to have be synched except in
terms of shared experience. It doesn't matter if the two observers are both
in exact synch as long as both actually get to see the event. 

-Raph



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