Hello,

Is there a way to only turn on dop calculations when a collision occurs?

I have a walking character made out of copied spheres (copy sop). I have box object colliding with my character.

I'd like for my character to continue walking around and when the box hits it all the spheres fall, fly etc basically dops takes over on collision.

Surely I'm missing a simple step?

Right on frame 1 all my spheres fall to the ground.

EDIT I guess I need help switching from keyframe animation to rbd sim only when a collision happens.
Thank you

ohhnevermind i got it keyframing gravity off and then on thanks you

That might work in this situation but it doesn´t sound like the best approach to me, if you ask me.

What if you had several objects, but only want to activate a few of them? you would have to create several gravity nodes with different groups assigned…doesn´t sound very elegant.

I think for such a simple situation you might want to take a look at the RBD Keyframe Active node.

My 2 cents.

yes I started to realize that. thanks you for the advice, i was thinking there had to be a way to mix keyframe animation w dops sims.

thank you