Make random maze as Capture The Flag mode

Hello,

Currently, I am trying to implement paper 'Human-level performance in first-person multiplayer games with population-based deep reinforcement learning'.

I can make a [simple 1 vs 1 CFG game](https://www.youtube.com/watch?v=88dNnX357eY) using the GtkRadiant and Lab.

However, it seems like paper use a Maze generation method to make various environment. It is little hard to make it myself because of lack of information.

Would you provide little hint about how to build a CFG game using Maze generation if it is possible?

Thank you