Adding code option for whether road network should be generated
Adding code option for whether road network should be generated

If false, then it implies that no lots/buildings will be generated
either.

Technically, there is always a road network created, but if no road
network is desired an empty road network is created.

This option is only available in the code, and not exposed in the UI.

jstrait/webgl-city,jstrait/webgl-city