How to keep a physics object moving (Havok)

Questions
1

I think I am probably just mis-understanding how this works. I would like to create a ‘box’ containing some objects (for ease of discussion, lets just use a couple of spheres), then apply an impulse to the spheres and have them move forever (i.e. perfectly elastic collisions),

My understanding was that setting friction to 0 and restitution to 1 on the PhysicsAggregates and then using setLinearDamping(0) would be enough, but the spheres still seem to slow down as they collide with each other and the walls?

2

In theory, yes. In practice, I’m not sure this is possible because of float precision and other factors.
I would suggest to add a collision callback and add a small impulse. Or increate the linear velocity from time to time.

1 Like
3

I’m glad I am not mad at least! I was planning to try and fix it exactly as you said with an onBeforeRenderObservable update to the linear velocity vector, but then just started to think that I must be missing something…

1 Like