24 std::unique_ptr<Filesystem> filesystem;
25 std::unique_ptr<ResourceCache> resource_cache;
26 std::unique_ptr<Window> window;
27 std::unique_ptr<Graphics> graphics;
28 std::unique_ptr<Audio> audio;
29 std::unique_ptr<LayerStack> layer_stack;
35 bool minimized =
false;
36 float last_frame_time = 0.0f;