Hello

This might help 

http://www.cocos2d-x.org/wiki/User_Tutorial-Predict_Trajectory_With_Box2d

http://jwezorek.com/2014/08/cocos2d-x-box2d-breakout-updated/

The top link explains how to set up in linux and windows. Is there anything that explains how to set up Box2D on XCode? I understand how to import the Box2D classes and everything, but don’t you have to configure each project to use the Box2D library in addition to importing?

Check out these links:

• http://www.iforce2d.net/b2dtut/setup-ios
• http://www.iforce2d.net/b2dtut/setup-osx
• https://danielbeard.wordpress.com/2011/06/08/getting-box2d-physics-working-in-xcode/
• http://stackoverflow.com/questions/15179253/how-to-add-box2d-to-an-existing-xcode-cocos2d-project
• http://www.conceptualinertia.net/aoakenfo/adding-box2d-to-xcode
• https://forum.openframeworks.cc/t/linking-box2d-with-xcode/16740
• http://www.raywenderlich.com/28602/intro-to-box2d-with-cocos2d-2-x-tutorial-bouncing-balls