Each particle has one random friend and one random enemy. In each time step, a particle takes a step towards its friend, a slightly larger step away from its enemy, and a teeny step towards the centre of the screen. The result is nicely chaotic behaviour with no real physics. Source code at https://editor.p5js.org/isohedral/sketches/zSZ0-Omzx#genuary#genuary2024#genuary1
