Менеджмент графа нодов.

///----------------------------------------------------------------------------|
/// scenes.as
/// Переключатель сцен.
///----------------------------------------------------------------------------:

Scene@ SCENE;

enum eSCENES
{   E_LOGO = 0,
    E_WORLD   ,
    E_FABRIC  ,
    
    ///...
    E_END
}

class   Scenes
{       Scenes()
        {   
        }
            
            eSCENES NOW = eSCENES::E_WORLD;
    private Node@ scene_global;
            Array<Node@> arr(eSCENES::E_END);
    
    void create()
    {   
        debug.Push("Scenes::create()");
    
        SCENE = Scene();
        SCENE.CreateComponent("Octree"); 
        
        arr[eSCENES::E_LOGO  ] = SCENE.CreateChild("Logo"  );
        arr[eSCENES::E_WORLD ] = SCENE.CreateChild("World" );
        arr[eSCENES::E_FABRIC] = SCENE.CreateChild("Fabric");
        
        scene_ = scene_global = arr[NOW];
    }
    
    void only_one()
    {   for(int i = 0; i < eSCENES::E_END; ++i)
        {   if(i != NOW) arr[i].SetEnabledRecursive(false);
        }
    }
    
    Node@ now(){ return scene_global; }
        
    Node@ commutate(eSCENES SC)
    {   if(NOW == SC) return arr[NOW];

        scene_global.SetEnabledRecursive(false);
        scene_global = arr[SC];
        
        switch(NOW)
        {   case eSCENES::E_LOGO  : {   ::logo    .off(); break; }
            case eSCENES::E_WORLD : {   ::logo    .off(); break; }
            case eSCENES::E_FABRIC: {   ::fabs_all.off(); break; }
        }
        
        switch(SC)
        {   case eSCENES::E_LOGO:
            {   ::logo.on();
                hello.Settm("LOGO SCENE...");
                break;
            }
            case eSCENES::E_WORLD:
            {   ::world.on();
                hello.Settm("WORLD SCENE...");
                break;
            }
            case eSCENES::E_FABRIC:
            {   /// TODO
            
                ::fabs_all.on(fabs_all.now);
                
                hello.Settm("TODO::FABRIC SCENE...");
                break;
            }
        }
                 scene_global.SetEnabledRecursive(true);
        scene_ = scene_global;
        
        cameras.SetupViewport();
        
        debug.Push("scene_.name: ", scene_.name);
        
        NOW = SC;

        return scene_global;
    }
    
    void logo_light()
    {   ::logo.toggle_light();
    }
    
    Node@ Get(eSCENES i) // Node@ knot = scenes.Get(eSCENES::E_FABRIC);
    {   return arr[i];
    }
}