I finished my first pass implementation of a ui framework
>buttons
>menus
>basic way for me to layout hierarchical ui elements
>hierarchical input handling
>works for keyboard and controller
Along with this I implemented a pause screen so players can restart or quit missions.

Got it deployed to itch, feels good. Looks much better than the primitive button press instructions I had before, and it will be easy to build out new stuff from here.

Next I think I'll add the Vamps (humanoid) form to gameplay.