[Unity技巧]单例基类

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在unity中有两种单例类型，一种是普通单例，即普通c#类，另一种是继承了MonoBehaviour的单例。

普通单例：

public abstract class CSharpSingletion<T> where T : new() {    private static T instance;    public static T Instance    {        get        {            if (instance == null)            {                instance = new T();            }            return instance;        }    }}

using UnityEngine;using System.Collections;public class AudioSingletion : CSharpSingletion<AudioSingletion> {    public int i = 1;}

继承了MonoBehaviour的单例：

using UnityEngine;using System.Collections;public abstract class MonoSingletion<T> : MonoBehaviour where T : MonoBehaviour {    private static string rootName = "MonoSingletionRoot";    private static GameObject monoSingletionRoot;    private static T instance;    public static T Instance    {        get        {            if (monoSingletionRoot == null)            {                monoSingletionRoot = GameObject.Find(rootName);                if (monoSingletionRoot == null) Debug.Log("please create a gameobject named " + rootName);            }            if (instance == null)            {                instance = monoSingletionRoot.GetComponent<T>();                if (instance == null) instance = monoSingletionRoot.AddComponent<T>();            }            return instance;        }    }}

using UnityEngine;using System.Collections;public class MusicSingletion : MonoSingletion<MusicSingletion> {    public void PrintInfo()    {        print("Music!!!!!!!!!!");    }}

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