This map was made by SP2'19 folks in April 2019 during the Silly or Useful Things Hackathon (S.O.U.T.H.) at RC!
The base SVG lives at blinry/map-of-rc. A good, open-source and cross-platform program to edit is is Inkscape – feel free to create pull requests for additions or changes, or open issues regarding the content of the map in that repository!
That repository also contains a script called make-tiles.rb, which renders the SVG into JPG tiles suitable for display on the web using the Leaflet library.
We're using blinry/map-of-rc-tiles to host the generated tiles. The online map will fetch tiles from it's GitHub pages deployment at blinry.github.io/map-of-rc-tiles/. The conversion to tiles currently happens manually, and we just force-override that repository with the latest tiles.
This repository is a fork of Michael Kreil's 30C3 map, with updated dependencies. It fetches the tiles from the above repository, allows interactivity, and has a builtin location sharing feature, accessible via the button in the top right corner.
To keep the resulting links stable, when introducing breaking changes to the map, move the result to another subfolder, like v1 and v2. The first version is at v0.