PlayerPrefs bool, Vector3 저장 및 불러오기

public static class PlayerPrefsExtension
{
    public static void SetBool(string key, bool value)
    {
        if (value)
            PlayerPrefs.SetInt(key, 1);
        else
            PlayerPrefs.SetInt(key, 0);
    }
 
    public static bool? GetBool(string key)
    {
        int tmp = PlayerPrefs.GetInt(key);
        if (tmp == 1)
            return true;
        else if (tmp == 0)
            return false;
        else
            return null;
    }
 
    public static void SetVector3(string key, Vector3 value)
    {
        PlayerPrefs.SetFloat(key + "X", value.x);
        PlayerPrefs.SetFloat(key + "Y", value.y);
        PlayerPrefs.SetFloat(key + "Z", value.z);
 
    }
 
    public static Vector3 GetVector3(string key)
    {
        Vector3 v3 = Vector3.zero;
        v3.x = PlayerPrefs.GetFloat(key + "X");
        v3.y = PlayerPrefs.GetFloat(key + "Y");
        v3.z = PlayerPrefs.GetFloat(key + "Z");
        return v3;
    }
}