Unity Gems FSM Test

using UnityEngine;
using System.Collections;

public class TestStates : StateMachineBehaviourEx {

    public enum MyStates {

        A,
        B,
    }

    // Use this for initialization
    void Start () {

        useGUI = true;
        currentState = MyStates.A;
    }

    // Update is called once per frame
    void Update () {

    }

    void OnGUI() {

        GUILayout.Space(20f);
        GUILayout.BeginHorizontal();

        if (GUILayout.Button("action 1", GUILayout.Height(20f))) {
            currentState = MyStates.A;
        }
        if (GUILayout.Button("action 2", GUILayout.Height(20f))) {
            currentState = MyStates.B;
        }

        GUILayout.EndHorizontal();
    }

    IEnumerator A_EnterState() {

        Debug.Log("entered A");
        yield return null;
    }

    IEnumerator A_ExitState() {

        Debug.Log("exited A");
        yield return null;
    }

    IEnumerator B_EnterState() {

        Debug.Log("entered B");
        yield return null;
    }

    IEnumerator B_ExitState() {

        Debug.Log("exited B");
        yield return null;
    }
}