[ODE] Spring constants

[Jon Watte]

If you don't have the CPU to run the game, then don't run the game. That's what a "minimum spec" is all about.

If the game is acceptable at a time step of 0.1, then step ODE 10 times a second with a fixed time step. You probably want to use rendering interpolation if that's the case, though, unless you also don't want to render faster than 10 fps.

Of course, at 100 ms time steps, someone moving 10 meters per second will move a full meter, and if you're less than a meter wide, it means you could tunnel through an object entirely in that time step, so smaller steps is probably advisable :-)

Cheers,

			/ h+


-----Original Message-----
From: ode-bounces at q12.org [mailto:ode-bounces at q12.org]On Behalf Of John
Miles
Sent: Thursday, May 06, 2004 10:05 AM
To: ode at q12.org
Subject: RE: [ODE] Spring constants




> > The question is how to convert spring constants to ERP and CFM values
> > ODE uses. The formulas in documentation uses a timestep value, but in
> > my project I have a variable timestep (from 0.01 to 0.1). So what value
> > should I use there?
>
> Use a fixed time step. If you're falling behind on rendering,
> step the physics several times in a row to make up for it.

Which, unfortunately, will make you fall REALLY behind on rendering. :)

-- jm

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