How can I get two particle systems to attract particles from

Step 1: Kys

Nah in all seriousness tho, I'm assuming you are using blender, you can use boids particles and mess around with their settings. I don't know much, but try this tutorial

https://m.youtube.com/watch?v=Q1ltwA2CXBE

>>516432
I'd prefer not to use boids, this is just to test a physics concept.
How easy would it be to modify Blender by myself to make a new particle forcefield that's like charge but with reversed effect?

>>516438
This might help:

https://www.blender.org/manual/physics/force_fields/types/charge.html

>>516556
Why would that help?
I already know what every forcefield type does.

make first particle at o,o,o assign it features u need

>>516953
My problem is that I can't assign the features I need.

>>516438
Why bother doing this in blender (or any other software)? Just program it yourself.

I can link you some code for a galactic cluster simulator I've written a while ago that shows the particles as glowing dots (with some optional trails)

>>517057
Blender's a very nice engine for doing it, it seems easier to tweak it a little than to write something from scratch.

>>517111
What do you hope to gain from using it? A prettier render result?

If you want to test a physics concept, you'll want to write the integrator yourself anyway...