I am looking to use OpenStreetMap as a 'base' for my 2d RTS game. It's a fairly simple project, but I'm stuck at this seemingly simple problem. What I want basically, is to use OSM instead of a handmade map. OSM would not need to interact with game objects (apart from the player being able to 'walk' across the map).
My questions are: How can I do it? Is there maybe a game engine that supports this feature?
Thanks