I've been trying to get an "ecosystem" sim working for quite some time. It was not very succesful. So, now after a pretty long break I decided to come back to that. Here's my latest experiment:
there are three species:
1. veggies (my own alga shellular)
2. herbivores (modification of Carnatus Orbis) - tie-feed on veggies
3. carnvores (modification of Hunter 2.3) - shot-feeds on herbivores
Now, the energy balance is not there yet, becasue I could not get it to work with bots I had. I decided to evolve them a bit first. So here we have tons of veggies with a lot of energy. But the system has been running solid for the last 200 000 cycles, with none of the bots dying out.
I disabled mutations on veggies and on carnivores, but herbivores have been evolving and acquired about 25-30 mutations. They have not evolved any cannibalistic features and are still avoiding carnivores.
Feel free to try it. Here is
the link to the saved sim.