What program are you using to make Moonman? I think i've heard people say you're making it in Gamemaker, but i'm not sure.
I believe he said it's a homegrown engine based on SFML.
That's correct. Details of the engine can be found scattered through the tigsource devlog.
welp, I guess i'll go binge read the tigsource devlog then...
Feel free to ask me technical questions here.