|---------------------------------------------------------------------------------------|
| class Scene                                                                           |
|---------------------------------------------------------------------------------------|
| + virtual void event(const SDL_Event &ev) = 0                                         |
| + virtual void update(float delta) = 0                                                |
| + virtual void render() = 0                                                           |
|                                                                                       |
| + Scene()                                                                             |
| + virtual ~Scene()                                                                    |
|---------------------------------------------------------------------------------------|