Got up reasonably early and had the breakfast of champions: 2 packs of natto, 2 aji-tamago and rice.
Should be good fuel for a day of game development. Also, late last night I got something actually running, although it’s completely abstract at the moment.
It doesn’t look like much, but it’s actually loading entities (the blue square, in this case) and level data from Ogmo files. And the blue square moves!
Time to get back to it. Good luck to everyone!