Thanks for playing! I'm still figuring out how to use physics engines so a lot of the mechanics are rusty, like the double jump. The jump button applies a linear impulse to the primate's physics body. As long as you're not falling, you're able to provide another impulse (this is a double jump). The timing will vary it as your velocity is constantly changing depending on the time elapsed since your first jump, the mass of the primate, the gravity of the world etc. I definitely need to do some more reading up on Box2D before attempting another platformer. I hope you play again and see if you can defeat the boss in level 3! Thanks for the feedback :-)
