Ah, I wouldn't recommend doing dots for a game jam, unless you reeeeallllyyy want to. Especially since I wouldn't recommend dots for a platformer either. It makes more sense for a game that contains a multitude of characters that are all being updated in similar ways (maybe a group of flocking fish or what not). Dots isn't really designed for controlling specifically one character, so you wouldn't even see any kind of performance boost when there are barely any characters on screen.
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Your tight about DOTS but it's all I have been working with the last year. I've gotten used to it. I don't event use it for speed I just like the pattern (some background in DDO).
Anyway I updated the Jump yet again and I seriously think it's 1000x better :) but I'll settle for better.
If by chance you get a chance I would love for you to take another look. You're feedback has been incredibly helpful.