Unity 2018 Artificial Intelligence Cookbook - Second Edition

There's more...

It is worth noting that the fighting circle can be added as a component of a game object that works as the target player itself, or a different empty object that holds a reference to the player's game object.

Also, you could move the functions for granting and executing attacks to the fighting circle. We wanted to keep them in the manager so that the attacks' executions are centralized, and the circles just work for handling target positions; just like formations.