Making particles collide with each other? Possible? (2.8) So I have made what is essentially an asteroid field. I did this by making half a dozen asteroid models, and then making a large cube with a couple of ‘volume’ emitters that run for a single frame. Which then (with a couple tweaks to velocities et al) actually makes a pretty decent looking asteroid field.

However, the asteroids hit each other, and they overlap and pass through each other. I would, ideally need them to collide and bounce. (The large ones anyway, the small ones are dust effects and I don’t really care about those).

Doubly ideally, I would like to set up a scenario where when the objects collide they might ‘shatter’ or break apart in some way. But I suspect that would be significantly more complicated.

So for the main problem - is it possible to make the particles collide with each other?

I’ve tried playing with the ‘force’ settings, the self effect, and the various physics collision options, but none of them seem to do anything in this situation.

Any help?

(As an addition, it seems an addon called 'molecular' is meant to help with this, but it doesn't seem to work any more and I'm guessing it's no longer being developed)
Particles collision can be achieved with the molecular addon by pyroevil. There is a 2.80 port but you may have to do some digging to find it. Version of the addon I have for Blender 2.80 is 1.0.7 but I hear a 1.0.8 is out.
Where do I hear it, do you ask?

Here: https://blenderartists.org/t/addon-moleculars-physics/521682/255

Addon here:
https://github.com/scorpion81/Blender-Molecular-Script/releases

As for the shattering, there is a cell fracture addon provided with 2.80. I'm not sure how you'll manage to use it on particles, though.

You can try combining with the particles instance modifier. Worth giving it a shot. Or using animation nodes, maybe.