private void Start()
{
UnityEvent.Init();
ssm_ = new StateMachine("Simulation State Machine", debug: false);
ssm_.AddState("Phase:Active", StartActivePhase)
.AddTransition("Phase:Reproduction", IsAllDone, sleep: .5f);
ssm_.AddState("Phase:Reproduction", StartReproductionPhase)
.AddTransition("Phase:Extinction", IsExtinct)
.AddTransition("Phase:Active", () => true, sleep: .5f);
ssm_.AddState("Phase:Extinction", StartExtinctionState);
creatures.Add(startCreature);
ssm_.Start("Phase:Active");
}