I’m currently learning Python, but in the meantime I still want to try a simple simulation of my ideas. I just need a program that lets me create particles and forces with whatever properties and interactions I want that I can then simulate. For example, I might make a particle that attracts certain particles and repels others according to some equation. I already tried asking in softwareoptions, by the way
At a past job a physicist on my team used a free code that was developed at CERN for radiation simulations. Can’t recall what it was called but look into open stuff they’ve developed