I got an existing Objective-C project. Now I decided to rewrite some code and add Cocos2d to it. I know this framework for a long time and I recently discovered that they stopped the support for Cocos2d and created a new version called Cocos2d-x. There I found the Swift library and I asked me how to use the Cocos2d-Swift framework in my existing Objective-C project ? A step by step tutorial would be great. I searched a bit in the internet and found this: Stackoverflow Link
But since the post is from 2011 it does not cover how to add the swift library, since Swift wasn't introduced at this moment.