We have started a new developer series to help you deep dive in Archicad Add-On development.
The first part is available online, and the other two parts are coming soon. https://archicadapi.graphisoft.com/archicad-maze-generator-add-on-tutorial-part-1
The second part of the Maze Generator Add-On tutorial is now available: http://archicadapi.graphisoft.com/archicad-maze-generator-add-on-tutorial-part-2