What I mean is that shooting cost rounds to whole numbers and not counting in decimals. This means that a bot that shoots constantly will be dead already after 32000 cycles at the lowest cost setting, if it starts with 32000 nrg. Movement costs are not rounded, so you can set it so a bot can swim around for days before it dies without eating, if you want.
What I would like to try to achieve is some conditional logic. Don't produce enzymes if there is nothing to eat.