This is great, thanks for sharing. I'm planning on using this, or something similar, in a game I'm developing. It'll be waves of fog, but act like a fluid, and

This is great, thanks for sharing. I'm planning on using this, or something similar, in a game I'm developing. It'll be waves of fog, but act like a fluid, and will encroach on simulated ants :) I'm curious why the simulator never reaches a complete, steady state? It seems to settle mostly and then a few squares flicker rapidly. Is this just floating point math doing its thing, or ?