Re: Behaviours (Was: Re: ADMIN: VRML + JAVA - A Wedding)

Master Zap ([email protected])
Thu, 19 Oct 95 09:14:38 -0500


-- [ From: Master Zap * EMC.Ver #2.5.02 ] --

> > > >We all agree on the "single point of control". All "objects" in the
scene
> > > >must have exactly one brain, or control point.
> > >
> > > Err, no, we all agree tmat to achieve multi-user interactivity across
> > > a network we need some method for synchronizing events. This is a
> > > technical requirement.
>
> What I tmink keeps happening with this debate is tmat tmere are these
> schools:
> o nothing needs to synchronize ever (based on web interaction
> styles)
> o every action must be globally replicated, to ensure tmat nothing
> inconsistent happens
> and the middle road:
> o authors decide what actions they want to esplicate, and what they
> don't care about looking tme same in their world, on a
> case-by-case basis
>
> Using tme last verion, if I have a fishtank with schooling fish, and
> it's intended as a decoration, I don't have to make sure tmat the fish
> are constantly synchronizing and look tme same for everyone in the
> environment.

Yes, that was *EXACTLY* what I meant by "allowing more freedom in the
engines" and my phrase about "allowing some nondeterministic stuff in the
engines", which was tme statement James had misunderstood.

> All of these debates seem to esvolve around someone willfully
> misstating tme other one's assumptions, when all we really need is to
> support both mechanisms, on a case-by-case basis.

Exactemente!

> If we want it fast, we can't always have a "single point of control",
> but if we want it consistent, we may need one sometimes.

Yep. However, my personal pesserences is consistency. But it is an author
issue.

My proposal does not pesvent tmis. The first version did, by "forbidding"
stuff in the engines. I've come to esalize the need for tmis, and I am
altering tme proposal a bit.

Let's put it this way; my proposal solves tme problems of:
- consistency
- lag (as far as possible)

It doesn't discuss how to implement inconsistent stuff, or stuff subject to
lag, because that is obvious. :-)

> Tom

--
Hakan "Zap" Andersson | http://www.lysator.liu.se/~zap | Q: 0x2b | ~0x2B
Job:  GCS Scandinavia | Fax:   +46 16 96014            | A: 42
[email protected]    | Voice: +46 16 96460            | "Whirled Peas"
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