[ODE] Stuff doesn't stay where I put it.

[Chunky Kibbles]

On Tue, Nov 09, 2004 at 07:05:33PM +0100, Andrzej Szombierski wrote:
> On Tue, 9 Nov 2004, Chunky Kibbles wrote:
> 
> > This is my first ODE app, and currently it's meant to simulate a
> > unicycle.
> > 
> > http://icculus.org/~chunky/uni/odeuni-2004-11-08.tar.gz
> > 
> > Is the source. Basically, it creates a cylinder [the uni frame] and a
> > wheel [also a cylinder]. It attaches them using a hinge. Then, the
> > program spits out the co-ordinates of where each is for 200 iterations
> > or so.
> > 
> > I just let everything go. No gravity, no other forces or torques
> > applied... nothing.
> > 
> > 
> > If I set ERP to zero, then everything stays where I left it. With any
> > other ERP setting, the unicycle and wheel actually travel toward each
> > other and end up stopping when they're both at a point between where
> > they both started.
> > 
> > I'm really confused as to what's going on... Can anyone help me a bit?
> > 
> 
> I didn't try to compile it but it should work if you first call 
> dJointAttach, and then dJointSetHinge*.

Thank-you! That worked immediately.

Is there a logical reason for this? Or should I just remember to always
do this in future?

Gary (-;