Day 4:
Fixed a lot of jank in yesterday's work, and added heaps of functionality - processors and storage piles and so on all work great, as well as mostly the towers. I'm still stuck against some big bugs though, one with clipping in the ui that's ruining lots of my stuff (as seen in yesterday's screenshot, how the scroll list isn't clipped to it's window), as well as missile animations being inexplicably broken, and infact causing rendring of the whole screen to screw up momentarily. Hope to get on those tomorrow - also consious of the fact that I'm half way through now... Tomorrow might hopefully do some quick wip level generation, and stuff to make me feel better about the timelines.
Anyway, have a processor (the world-graphic of which needs replacing) creating a product from inputs, and a picker pulling the prodcut out onto a conveyor:
And here's some towers in action (icons of which need some improvements also):