Good news everyone !
It’s the first time I have been able to “play” a bit, of course it’s far from completion, there are still too many garbage collector, the game crash after a few minutes, and the framerate is low, but still it’s a great advancement
Still no android control, I had to plug my keyboard on the Nexus 7 to move and by tapping the screen it acts like a mouse.
I will continue on optimizing stuffs, I did a lot already, but I have even more to do. The thing to take care when programming on Android devices is that there is almost no memory available, so I have to make sure every variable/object is really usefull and it takes quite some time.