I had a quick look at the Developer Bundle, and it uses an "engine.cfg", so it should be using something older than godot 3.0 (there that file would be named "project.godot") so probably some 2.1 version was used.
svn checkout https://svn.code.sf.net/p/openssn/code/ openssn-code
EDIT 3: I recompiled the game this morning while in the train, with all the optimizations frrom Code::Blocks (-O3 -ffast-math etc...). Not sure this is a great idea, considering this is a submarine simulation, with lots of advanced math involved (I could be wrong though...). The PND is almost ready, you can expect a release soon !/mnt/utmp/openssn-magicsam/bin$ ./openssn -f
Couldn't set video mode...
OpenSSN requires 1024x768 @ 16 bpp
No video mode large enough for 1024x768
http://rexuiz.top/Rexuiz is a fast-pased 3D first person shooter game. Rexuiz is a revival of the game “Nexuiz Classic” (formerly known as “Nexuiz”) and thus very similar to that game. Rexuiz is compatible with Nexuiz Classic servers. The goal of the project is to create a high quality first person shooter that can be played freely across all platforms in one package, including GNU/Linux. The game is entirely free software and is able to run in low-end hardware.
@ptitSeb : I know you already tried to port this engine to the Pandora, but do you think this new version would be worth a try ?Fixed an FPS drop after minimizing the game during rainy weather (#4211)
Rainy weather no longer slows down the game when changing from indoors to outdoors (#4314)
I will have the same performances (so a couple of fps, at best, when outside), the "rain" fix are certainly good, but it is slow without rain anyway on the Pandora. OpenMW is too much for both CPU and GPU. I know gl4es is used on the Android port, and fps are pretty good there, but on much more powerfull phone then what the Pandora is...