Unity Singleton

 https://debuglog.tistory.com/35

Singleton.cs

using UnityEngine;
​
public abstract class Singleton<T> where T : class {
​
    protected static T instance = null;
    public static T Instance
    {
        get
        {
            if (instance == null)
            {
                instance = System.Activator.CreateInstance (typeof(T)) as T;
            }
            return instance;
        }
    }
}

MonoSingleton.cs

using UnityEngine;
​
public class MonoSingleton<T> : MonoBehaviour where T : MonoBehaviour {
​
    protected static T instance = null;
    public static T Instance
    {
        get
        {
            instance = FindObjectOfType (typeof(T)) as T;
​
            if (instance == null)
            {
                instance = new GameObject ("@"+typeof(T).ToString (),
                                           typeof(T)).AddComponent<T>();
                DontDestroyOnLoad (instance);
            }
            return instance;
        }
    }
}

Generic Singleton클래스와 MonoSingleton 클래스이다.

생성부분에서 차이가 있음.

GameManager.cs

using UnityEngine;
​
public class GameManager : Singleton<GameManager> {
    public void Call(){
        Debug.Log ("GameManager Call()");
    }
}

SoundManager.cs

using UnityEngine;
​
public class SoundManager : MonoSingleton<SoundManager> {
​
    public void Call(){
        Debug.Log ("SoundManager Call()");
    }
}

각각 Singleton과 MonoSingleton을 상속받았다.

SingletonTest.cs

using UnityEngine;
​
public class SingletonTest : MonoBehaviour {
    
    void Start () {
        GameManager.Instance.Call ();
        SoundManager.Instance.Call ();
    }
}

테스트.