#silentkrakenblog Manager systems for unity3d, a new approach

gistfile1.cs

[RequireComponent(typeof(GameManager))]
[RequireComponent(typeof(ScreenManager))]
[RequireComponent(typeof(AudioManager))]
[RequireComponent(typeof(MissionManager))]
public class Managers : MonoBehaviour
{
    private static GameManager gameManager;
    public static GameManager Game
    {
        get { return gameManager; }
    }
 
    private static ScreenManager screenManager;
    public static ScreenManager Screen
    {
        get { return screenManager; }
    }
 
    private static AudioManager audioManager;
    public static AudioManager Audio
    {
        get { return audioManager; }
    }
 
    private static MissionManager missionManager;
    public static MissionManager Mission
    {
        get { return missionManager; }
    }
 
    // Use this for initialization
    void Awake ()
    {
        //Find the references
        gameManager = GetComponent<GameManager>();
        screenManager = GetComponent<ScreenManager>();
        audioManager = GetComponent<AudioManager>();
        missionManager = GetComponent<MissionManager>();
 
        //Make this game object persistant
        DontDestroyOnLoad(gameObject);
    }
}

gistfile2.cs

Managers.Audio.Play(transform.position, clip);

gistfile3.cs

public class GameManager : MonoBehaviour
{
    private GameState currentState;
    public GameState State
    {
        get { return currentState; }
    }
 
    //Changes the current game state
    public void SetState(System.Type newStateType)
    {
        if (currentState != null)
        {
            currentState.OnDeactivate();
        }
 
        currentState = GetComponentInChildren(newStateType) as GameState;
        if (currentState != null)
        {
            currentState.OnActivate();
        }
    }
 
    void Update()
    {
        if (currentState != null)
        {
            currentState.OnUpdate();
        }
    }
 
    void Start()
    {
        SetState(typeof(GameplayState));
    }
}

gistfile4.cs

public abstract class GameState : MonoBehaviour
{
    public abstract void OnActivate();
    public abstract void OnDeactivate();
    public abstract void OnUpdate();
}