I'm trying to develop a game for iOS. I am using DragonFireSDK, and they have just implemented Box2D physics into it. I am trying to make a game that uses the engine, but I don't understand any of the code. I've read the manual for Box2D a couple times, but I don't understand it still. I heard that Angry Birds used to Box2D for all their physics. I am trying to make a game that has similar physics but it is a totally different type of game. Also I've heard that people use a "Box2D Editor", I've tried to find one but I can't find one. They use those to make all their objects and then export them into their code. If you could help me with this it would really help.

Thanks!