What properties and methods are usually included in a class responsible for scene management in a game engine?

A class that manages a scene in a game engine typically includes the following properties and methods:

Properties:

• A list or collection of game objects (entities) present in the scene.
• A camera or set of cameras defining the viewpoint.
• Scene lighting.
• Scene parameters (e.g., background, gravity).

Methods:

• Load() or Initialize() — loading and initializing the scene.
• Update(float deltaTime) — updating the state of all scene objects each frame.
• Render() — rendering the scene.
• AddObject(GameObject obj) and RemoveObject(GameObject obj) — managing scene objects.
• HandleInput(InputEvent e) — processing user input.
• Methods for managing scene transitions (e.g., Unload(), SwitchTo(Scene otherScene)).

Example in C#:

public class Scene
{
    private List<GameObject> objects = new List<GameObject>();
    private Camera mainCamera;

    public void Load() { /* load resources */ }
    public void Update(float deltaTime)
    {
        foreach(var obj in objects)
            obj.Update(deltaTime);
    }
    public void Render()
    {
        mainCamera.Render(objects);
    }
    public void AddObject(GameObject obj) => objects.Add(obj);
    public void RemoveObject(GameObject obj) => objects.Remove(obj);
}

This class serves as the central scene manager, coordinating the updating and rendering of objects.