Manager

All scenes will also have an agent manager which is automatically added to the scene as needed. This is a singleton meaning only one instance ever exists. This caches agents in the scene for quick access, spawning, and despawning of agents.

The manager is responsible for controlling all the agents in the scene. Every FixedUpdate() the manager will in order:

1. Run all automatic sensors on all agents.
2. Run any actuators which have been set to do so.
3. Calculate the update movement velocity of all agents.