SOLVED Question about forces

Hey everyone,
I am trying to build a starfield, that flies towards the viewer. The viewer should be able to interact with these stars (=particles). Either by pulling them to his hands and thus changing their direction of flight, or by having them “collide” with his hands, so they have to find a way around.

I am uploading my file as well, but my problem is, that the forces don’t seem to affect the particles at all. This does not change until I change the metaball size to 3, and then the particles go crazy.
What I really want, is something like this
stars1.jpg
Which I know should be possible with a negative radial force.

Or this
stars2.jpg
Which should be possible with a positive radial force

Or this
stars3.jpg
Which should be possible with a geo as collision

But neither works. Any ideas what I am doing or where I’m thinking the wrong way?

stars.toe (8.2 KB)

Hello, so no expert here but I think instead of moving a sphere that is connected to metaball.
You should delete these spheres and move the actual metaball with a transform sop just after metaball itself. that should work. Then adjust size of metaball to adjust field of attraction. Good luck!

I found the error: I instanciated other particle systems with the particle field itself. That means, that the particles are really far away from each other, that’s why I only got an effect with huge spheres and then everything looked crazy because a whole particle system was affected by the force.

working on something similar, would love to compare what you came up with for reference if you’re comfortable sharing

hey drmbt, a while back i posted a basic example resembling the second sketch above, maybe it can help you too.