unity 单例类源码

以下是Unity中常见的单例类的源码示例：

1. GameManager单例类：

public class GameManager : MonoBehaviour
{
    private static GameManager _instance;

    public static GameManager Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<GameManager>();
                if (_instance == null)
                {
                    GameObject go = new GameObject();
                    go.name = "GameManager";
                    _instance = go.AddComponent<GameManager>();
                }
            }
            return _instance;
        }
    }

    //其他方法和变量
}

2. AudioManager单例类：

public class AudioManager : MonoBehaviour
{
    private static AudioManager _instance;

    public static AudioManager Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<AudioManager>();
                if (_instance == null)
                {
                    GameObject go = new GameObject();
                    go.name = "AudioManager";
                    _instance = go.AddComponent<AudioManager>();
                }
            }
            return _instance;
        }
    }

    //其他方法和变量
}

3. UIManager单例类：

public class UIManager : MonoBehaviour
{
    private static UIManager _instance;

    public static UIManager Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<UIManager>();
                if (_instance == null)
                {
                    GameObject go = new GameObject();
                    go.name = "UIManager";
                    _instance = go.AddComponent<UIManager>();
                }
            }
            return _instance;
        }
    }

    //其他方法和变量
}

以上示例代码中，单例类的实现方式基本相同，都是通过静态变量和静态方法来实现，使用时只需要调用类的静态方法Instance即可获取单例对象。如果当前场景中没有单例对象，则会自动创建一个新的GameObject，并将该单例脚本添加到该GameObject上。