Thanks for getting back to me on this. The plan was always to compile a list of pixel coordinates but then you mentioned ripping out code. This might be above my pay grade! More tinkering required!
No worries, you should be able to handle it, it currently has a list of coordinates like your plan, only they get passed through a function f(x)=ax+c f(y)=by+d
where a,b,c,d are to convert from British National Grid meters into map pixels
either remove the transform functions or set a,b,c,d = 1
some of the industries and trees are a little fancier as you can set the top left and bottom right bounding box to create many industry/trees within the box. likewise the roads you can set the two positions to build a road between.
Real life transport planner
My projects:Link to my UK Scenario
|Scenario Builder GS
Do check out my 3D unity transport game: transporter