Evolution of my SCP-like procedural map generator
The beginning
Back in 2023, I ported Juan's and Virtual's procedural map generator on Godot. While Juan's was good (except the Containment Breach CC-BY-SA 3.0 license, which breaks compatibility with all third-party code, because of license incompatibility - that's the reason why I hid SCP: Site Online from public), Virtual's had drawbacks - that map generator just couldn't always connect all rooms.
I tried to port another procedural map generators (they were mapgen v.1, and mapgen v.2 - they were eventually removed (especially later, which was a copy of another map generator, which had no license))
But these first were not good enough.
MapGen v.3
In 2023, I created a simple procedural map generator by a tutorial in Godot.
It was easy, but had drawbacks - there were too few hallways (straight hallways with 2 exits).
Because of this problems, I paused developing this map generator, and went to Juan's map generator (I nowadays regret of this choice because of incompatible license).
MapGen v.5
After I knew CC-BY-SA issues, I dropped Juan's generator port, and began improving my own mapgen. I moved to GDScript for better mod support, changed algorithm to AStar and added zone support - currently supporting only one direction (like SCP-CB generator).
In 5.1 update I added support for random doors (like SCP: Secret Laboratory 14.0) - but that time they were completely random.
And why I skipped v.4 - just because "it combined the power of Juan's mapgen and my old v.3 map generator"
MapGen v.6
The most key features of 6.0-6.1 features were large rooms - I implemented checks for large rooms (in 6.0 only for endrooms).
In 6.2 changed the map heuristic.
MapGen v.7
In version 7 of map generator I implemented increasing zones in both direction. Also implemented "Better map generation" - it should reduce "low amount of endrooms" problem.
In v.7.1 I added documentation and in 7.2 I added 2D version.
7.3 was mostly a bugfix (but received a minor - not a patch - version because of the core algorithm change)
MapGen v.8
I reworked the map generator structure - to a backend and frontends for 2D and 3D, added SCP: Secret Lab-like checkpoints and hallway with specific door set (like 14.0 T-section armory) in v.8.0.
The map generator became feature-complete.
In v.8.1 fully implemented chances for single rooms. And...
...Map generator became cross-platform!
I began to port to Unreal Engine - the only platform, that was missing a permissive open-source map generator. (Unity has a good third-party map generator)
The first step to it was native C++ generator. I finished porting at 2025-05-25.
The next step was Unreal Engine 5 - it was very hard, because I was newb to Unreal Engine, and didn't know about UE and C++ specific behavior, that lead me to non-working code - because UE5 documentation was very poor.
But I made it eventually (at the day of writing, Unreal Engine version is still W.I.P. - not all features are ported)!
The final results.
