Add Custom State Actions

[MarquisMc]

Description

Implement custom state actions to allow users to define and execute specific behaviors when entering, exiting, or transitioning between states. This will enhance the flexibility and functionality of the state machine.

Suggested Solution

1. Action Interface:

   • Define an interface for custom actions that can be implemented by users.
   • Ensure the interface includes methods for entering, exiting, and transitioning states.

2. State Class:

   • Modify the State class to include a list of custom actions.
   • Ensure each state can execute its custom actions at the appropriate times (enter, exit, transition).

3. UI Integration:

   • Provide a UI for users to attach custom actions to states.
   • Allow users to define the specific behaviors for each action.

4. Edge Cases:

   • Handle cases where actions fail or throw exceptions.
   • Ensure the state machine remains stable and consistent despite action failures.

Example Implementation in Unity C#

using System.Collections.Generic;
using UnityEngine;

public interface IStateAction
{
    void OnEnter();
    void OnExit();
    void OnTransition();
}

public class State : MonoBehaviour
{
    private List<IStateAction> actions = new List<IStateAction>();

    public void AddAction(IStateAction action)
    {
        actions.Add(action);
    }

    public void Enter()
    {
        foreach (var action in actions)
        {
            action.OnEnter();
        }
    }

    public void Exit()
    {
        foreach (var action in actions)
        {
            action.OnExit();
        }
    }

    public void Transition()
    {
        foreach (var action in actions)
        {
            action.OnTransition();
        }
    }
}

public class CustomAction : MonoBehaviour, IStateAction
{
    public void OnEnter()
    {
        Debug.Log("Entering state...");
    }

    public void OnExit()
    {
        Debug.Log("Exiting state...");
    }

    public void OnTransition()
    {
        Debug.Log("Transitioning state...");
    }
}

Tasks

• Define the custom action interface.
• Modify the State class to support custom actions.
• Integrate custom actions with the UI.
• Test the functionality thoroughly to handle various edge cases.

References

• State Pattern
• Observer Pattern