[ODE] -- dAreConnected, doesn't work with Contacts ??

[Cristian Bianchi]

Hi,
take a look at your simulation loop...
you should have something like this...

dSpaceCollide(....);
dQuickStep(.....); // or WorldStep, ....
dJointGroupEmpty(contactGroup);

I think the problem is that the last statement "dJointGroupEmpty" destroys
all contact joints you created in the nearCallback...
You must use a  different approach... for example in the nearCallback,
register in a list, or in an array, all the contacts between interesting
objects.
Regards,
Cristian Bianchi
DIESGroup srl, Rome - Italy



----- Original Message ----- 
From: "[ HanSolo ]" <hansolo7 at telepolis.com>
To: <ode at q12.org>
Sent: Wednesday, August 31, 2005 1:19 PM
Subject: [ODE] -- dAreConnected, doesn't work with Contacts ??


> Hi, i am trying to detect when 1 body touchs other body(out of
> nearCallback), for example, 1 box falls over other box but the
> "dAreConnected" function ever returns 0
> , if i attach the 2 boxes with 1 joint it works (other dJoint "Type",
> not "contact" type) but it seems that with dJointTypeContacts doesn't
work.
> (That function can be helpfull for me.)
>
> ¿¿ Why ??
>
> Thanks (again) and sorry for my poor english.
>
>
>
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