Don't know if there are big advantages over Moai or Cocos2dx-javascript, and not sure about yet-another-language-to-learn, but looks very interesting. What abo

Don't know if there are big advantages over Moai or Cocos2dx-javascript, and not sure about yet-another-language-to-learn, but looks very interesting. What about native calls? (Like web popups or sharing/receiving files.) Is it necessary to enter the NDK nightmare? Are they possible?