Two times inherited from a generic class

Question

I have two class

public class Singleton<T> : MonoBehaviour   where T : Component
{
    protected static T _instance;


    public static T Instance
    {
        get
        {
            return _instance;
        }
    }
}

and

public class GameManager : Singleton<GameManager>
{
    // Lots of Methods and Properties...
}

I want to create 3. class derived from GameManager for example ShooterGameManager. I can create ShooterGameManager with

public class ShooterGameManager : GameManager
{}

but Instance is still GameManager !!!, I tried something like to added extra class definition with generic class.

public class GameManager<T> : Singleton<T> where T : Component
{}

but this time there are 2 completely different classes available, nothing inherited from GameManager. What should I do ???

Answer 1

You could Create GameManager like this

public GameManger<T> : Singleton<T>
{}

then you could create GameManger

public GameManager : GameManager<GameManger>
{}

and ShooterGameManager

public ShooterGameManager : GameManager<ShooterGameManager>
{}

and repeat for the other two types you need to create

an example below proves this works

public class Program
{
    public static void Main()
    {
        new GameManager(); //Prints GameManager
        new ShooterGameManager(); //prints ShooterGameManager
    }


}

public class Singleton<T>
{
    private T _instance;

    public Singleton()
    {
        Console.WriteLine(typeof(T).Name);
    }
}

public class GameManager<T> : Singleton<T>
{
}

public class GameManager : GameManager<GameManager>
{
}

public class ShooterGameManager : GameManager<ShooterGameManager>
{
}