[ODE] Simulations running in real time?

[Allan Simonsen]

Bad idea; you'll cause all sorts of numerical
instability issues if you pass in rapidly changing
delta values. 

The step-value you pass in does represent the time
since last step, but you should freeze that one at
some given value (1/60's a good start). Otherwise your
results won't be reproducible, you open yourself to
all sorts of nasty tunneling artefacts that only
occour under low FPS conditions, etc.

Megan's approach is the way to go on this one.

Allan


> exactly does the stepsize value represent? I mean
> does it means advance 
> simulation by stepsize seconds/miliseconds/etc? or
> does it mean advance 
> a percentage of a "step" (whatever that is) 1.0
> being 100%, 0.5 50% etc.
> 
> if it means advance simulation x seconds then all I
> would have to do is 
> feed my DeltaTime to WorldStep right?
> 

Allan Simonsen                    simonsen at rocketmail.com
ICQ# 16606984


		
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