Thanks! Finally the engine is out: https://github.com/cocoatoucher/Glide
Your art has helped me a lot :)
I just released a 2d game engine developed with Swift language. It works on iOS, tvOS and macOS seamlessly.
glide is open source and it has a demo project with which you can have a glimpse of all of its features.
Let me know your opinions and feedback if you can give it a try!