This implementation of a finite state machine uses Unity's scriptable objects to break each state down into an Action, Decision, and state to transition to. This allows a designer to "plug" different scriptable objects together to form different behaviors for enemy AI.

For example, a patrolling state could have the "action" of moving back and forth between two waypoints, a "decisition" to transition out of this state if the player comes within agro range, and a "State to transition to" could be an attacking or chasing state. These attacking or chasing states would also have their own Actions, Decisions, and states to transition to.

Creating different states for your enemy AI which are comprised of different Actions, Decisions, and 'States to transition to' can create different behaviors.