Hi all, Now I have completed my map editor for a scrolling shoot''em up. Now, the thing is that I would like to set up non-accessible background / foreground objects, like brick walls or space stations. This is already incorporated in my map structure, I have a field called "Accessible:boolean" which decide wether it is passable or not. So, I would like to know how I would best do this(for speed and code efficency), should I for each of these non-passable objects create a sprite or would it be best to check each objects rectangle or something. Anyone have any good articles on normal shoot''em up games, for scrolling and maps? Cheers