It's a generic state machine that allows to define states and transitions for any entity on you game. The goal of the FSM is to provide a way to handle an entity behaviour state, transitions and to help to mantain an reuse code.

Just create a new Script that inherits from BehaviourFSM.

public class Robot : BehaviourFSM

Then you can assign it to a GameObject and start assigning States and Transitions

Assigns the current state of the FSM, will execute the OnStateEnter of the new assigned method and OnStateExit of the current state if available.

A state provides several methods for you to implement. A State has a boolean property called defaultState if active will set the State as the initial state of the FSM.

When the FSM receives a state change, will execute this method. Use this method to initialize the state logic.

Prior to remove the current state of the FSM on a transition, it will call OnStateExit. Useful to reset variables of the state to it's defaults and be ready for a next invocation.

This allows you to call the Reset method in each Transition of a given State.

A transition allows to change the current State, a State can transit to different new states based on the rules you define in each transtion. To create a new transition you need to inherit from TransitionEvent

A transition defines the following methods:

This boolean method will be evaluated each frame while the current state that uses this transition runs, once it returns true it will trigger the state change.

This will be called when the FSM is initialized, allows you to define the initial state of you transition as needed.

You can use this method to reset the transition if needed (e.g. Reset variables for the next time this transition runs).

You can define how the FSM should update, it supports Unity's update types as follows:

• For ManualUpdate you need to manually call the method StateUpdate

This method will be updated by the FSM update loop, here you will define the correspondent behaviour of your state, it receives a deltaTime if you wish to override the default delta step.

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