[ODE] Collision problem

[Aurélien ....]

Hi all,

I have a probleme with collisions:

const int N = 10;
dContact contact[N];
int n = dCollide (_kart->GetGeomID(),_ground->GetGeomID(), N,
&contact[0].geom,sizeof(dContact));
if (n > 0)
{
   for (int i = 0; i < n; i++)
   {
      contact[i].surface.mode = dContactSlip1 | dContactSlip2 |
dContactSoftERP | dContactSoftCFM | dContactApprox1;
      contact[i].surface.mu = dInfinity;
      contact[i].surface.slip1 = 0.1;
      contact[i].surface.slip2 = 0.1;
      contact[i].surface.soft_erp = 0.5;
      contact[i].surface.soft_cfm = 0.3;
      dJointID c = dJointCreateContact (ODE::GetInstance()->GetWorldID(),
_contactgroup, &contact[i]);
      dJointAttach (c, dGeomGetBody(contact[i].geom.g1),
dGeomGetBody(contact[i].geom.g2));
   }
}

the variable n is never > 0...

What I have missed again?

Thanks all ;)
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