Method RunVariableFrame

src/openrct2/Context.cpp:1324–1360

        }

        void RunVariableFrame(float deltaTime)
        {
            PROFILED_FUNCTION();

            const bool shouldDraw = ShouldDraw();
            auto& tweener = EntityTweener::Get();

            _uiContext->ProcessMessages();

            while (_ticksAccumulator >= kGameUpdateTimeMS)
            {
                // Get the original position of each sprite
                if (shouldDraw)
                    tweener.PreTick();

                Tick();

                _ticksAccumulator -= kGameUpdateTimeMS;

                // Get the next position of each sprite
                if (shouldDraw)
                    tweener.PostTick();
            }

            _backgroundWorker.dispatchCompleted();

            ContextHandleInput();
            WindowUpdateAll();

            if (shouldDraw)
            {
                const float alpha = std::min(_ticksAccumulator / kGameUpdateTimeMS, 1.0f);
                tweener.Tween(alpha);

                Draw();
            }
        }

        void Draw()
        {