It’s not an easy, because we have no access to buffers with game components like transform, physic shapes data etc.
For now it will have big overhead for communication like lua->NE->lua->Engine every frame.
It would be great if Defold developers made this buffers accessable using Defold SDK.
We do not even have possability to read vectors (user types: vector3, vector4, matrix etc) on NE side (using Defold SDK) but we talked about this with @Mathias_Westerdahl and I hope for a soon improvements here.