Export Unity map to handle physics on Java server

Hi there,

I'm actually developing a Hack'n'Slash game, we have done player connection and movement handling (it's the very beginning of our development, we need to setup a few basics :D).

We are actually on map system and physics system development, in order to avoid player cheating ( attacking/moving through walls ). We want to handle collision on server-side. For this, we need to know a 2D physic representation of the map, with free pixels and not-free pixels, to be able to handle movements, skillshots etc on serv-side.

The problem is that server is running with Java, and we definitely can't change it to C#, so we need to find a way to create a map on unity, and export it to be able to use it in Java (like Json, xml, or whatever).