Function renderAndUpdate

src/OpenLoco/src/Graphics/Gfx.cpp:261–288

0x004CF63B TODO: Split this into two functions, one for rendering and one for processing messages.

    // 0x004CF63B
    // TODO: Split this into two functions, one for rendering and one for processing messages.
    void renderAndUpdate()
    {
        if (Ui::isInitialized())
        {
            auto& drawingEngine = Gfx::getDrawingEngine();

            // Clear the screen if the scene hasn't been initialised yet, since the game doesn't clear
            // the screen each frame it relies on overdrawing but with no tile elements or entities loaded
            // there is nothing to draw.
            if (!SceneManager::isSceneInitialised())
            {
                auto& ctx = drawingEngine.getDrawingContext();
                ctx.clearSingle(PaletteIndex::black0);
            }

            drawingEngine.render();
            drawingEngine.present();
        }

        if (Input::hasFlag(Input::Flags::rightMousePressed))
        {
            Input::processMessagesMini();
        }
        else
        {
            Input::processMessages();
        }
    }

    void render(Rect rect)
    {