Dear Mr Braybrook, I spent a lot of time on your games as a kid, and you can code up whatever the hell you want to, but I would like to respectfully suggest tha

Dear Mr Braybrook, I spent a lot of time on your games as a kid, and you can code up whatever the hell you want to, but I would like to respectfully suggest that you have a look at stuff like TileEd before going further down this particular rabbit hole. Use the results of someone else spending about twenty years writing a powerful, multi-use map editor.