In order to keep myself entertained (because the porting work is not always so fun), I have implemented some gameplay elements and a user interface. So almost everything you see in the picture above is actually functional (not a mock-up), and the ship can run out of energy, for example. There is even more features under several animated submenus that are closed in the image. However, it is not yet polished and will receive tweaks and additions.
Apart from finishing the universe, big features I still need to implement include: enemies and NPCs, homing torpedos and combat in general, economy (ship upgrade shopping, resource/”item” gathering and possibly trading) as well as the main quest.