[ODE] Non-deterministic behavior

[gl]

Take a look at this:
http://www.q12.org/pipermail/ode/2003-March/003768.html
--
gl

----- Original Message ----- 
From: "Josh Welber" <josh@largeanimal.com>
To: <ode@q12.org>
Sent: Sunday, August 24, 2003 3:16 PM
Subject: [ODE] Non-deterministic behavior


> Does anyone have experience with ODE giving non-deterministic
> results?  What I mean is specifically this:  We have a simulation where
you
> shoot a ball out over a terrain and it starts rolling from there.  The
only
> user input is the direction/spin/force that the ball is launched with -- 
> and all these are set with discrete controls. The collisions in this case
> are all between spheres and triMesh.  We have found that the ball does not
> in a deterministic manner -- but rather bounces oddly sometimes, sometimes
> acts as expected.  This is sometimes worse if there is friction in the
> collision contact, but even for frictionless collisions it still reacts in
> a non-deterministic way.  Does anyone have any ideas about this one, seen
> this behavior themselves?  I saw the posting regarding friction causing
> unexpected results -- this is a different problem.
>
> thanks
>
>
>
> Josh Welber
> partner/tech wrangler
> Large Animal Games
> http://www.largeanimal.com
> t: 212.989.4312
> f: 305.489.5790
>
>
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