[ODE] Issue with angular velocity

[Michael Coles]

It appears as though the ball is sinking into the trimesh quickly, and
its pushing it back out. If so, try setting the max correcting velocity.
Also if you have any stutter and are passing the elapsed time between
frames this can happen. Make sure the elapsed time you pass is not too
high (i.e limit it).

Hope this helps you a bit (Im currently developing a game with a ball as
the main focus, roling on a trimesh).

Good Luck!

Michael Coles
Software Developer
SC Digini Software Labs S.R.L

-----Original Message-----
From: ode-bounces at q12.org [mailto:ode-bounces at q12.org] On Behalf Of
Vianney Lecroart
Sent: Thursday, June 09, 2005 12:34 PM
To: ode at q12.org
Subject: [ODE] Issue with angular velocity

Hello,

I'm using ODE-0.5 and I have some strange behaviors on my (free) game.

Your are a sphere (a ball) and roll on the big ramp (using
opcode/trimesh)  to take off. Sometimes, randomly, the ball hits a
virtual things and his angular velocity jumps from about 500 to 3000 and
ejects the ball in a random direction. 95% of the time, it is working
well, and 5%, the ball is going crazy.

I read the mailing list and saw that other peoples also talk about this
issue, I don't really know if it is the same problem and how to solve
it.

I tried to use quickstep instead of worlstep without any changes.
I also tried the patch provided by Adam D. Moss wihtout success.
I also tried to reset the angular velocity when it was too big, but I
still have the issue.

If you have any other solutions to that problem...

You can see a video (divx) of the bug on this url (1 mega bytes):

http://ace.planet-d.net/dl/odeprob.avi


Vianney Lecroart

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