Having dug into the unreal python API recently nothing is straightforward :D - the documentation is (diplomatically speaking) fucking shit the hard part here is the algorithms for generating convincing road layouts. Once you have that it's simple enough to generate plots for buildings and then the buildings themselves.…
I'm just starting on the same sort of project - I read a bunch of papers and tried a load of existing apps but it's a bit of an unexplored field - the focus in industry seems to be on translating real world(OSM) data. City engine pretty much sewed the market up til it got tied up and buried (properly buried, you can't even…