Re: [Pyode-user] Why don't my joints work? (PyODE with PyOgre)

[Andrew D. <ad...@gm...>]

On 10/4/05, Matthias Baas <ba...@ir...> wrote:
>
> I couldn't run your code as I don't have PyOgre but it seems the problem
> is you store the BallJoint in a local variable which gets deleted at the
> end of the method. And as j1 is the only reference to the BallJoint
> object the BallJoint is garbage collected when j1 is deleted which will
> also delete the underlying ODE BallJoint. To fix this you simply have to
> keep a Python reference to the joint (self.j1 =3D ode.BallJoint(...)).

Yes, that fixes it -- although it seems a little unnatural. I would
have expected that the world would maintain the object, and that PyODE
would not delete the joint merely because the Python reference gets
collected...

Anyway, thanks! I've got a solution now.