GoldSRC + Godot = ???

My last post in "Post your WiP screenshots" was about my modification of the idTech 3 engine. Now I decided to take it to the journals, since it's ultimately unrelated to Half-Life. But not entirely.

Simply put, the ideas are:
1. Have a GoldSRC-like folder structure: maps, models, sound etc.
2. In mapping, work with it almost as if it were GoldSRC or Quake (this means you make the map in J.A.C.K. or TrenchBroom or whatever)
3. Don't use any Half-Life asset formats or anything from the HL SDK
4. Keep the aesthetic of GoldSRC

It's mainly for folks like me, who are too used to GoldSRC but still wanna make standalone games using archaic methods.
I moved the project to Godot, primarily due to licencing. Not being able to use certain libraries, due to GPL, sucks.

Now the challenge is even more interesting, because I'll need to build a "game engine" on top of Godot - something vaguely similar to what S&box is doing; also somewhat similar to what SharpLife is doing - because I wish to keep the GoldSRC-like workflow: make a map in an external map editor like TrenchBroom, export, compile, and put it somewhere in the maps folder. Then run the engine, open the console and use the map command. No Godot Editor involved.

One neat thing I'm planning to do is manual VIS, since there's no VIS in Godot, or rather, no occlusion culling system. Manual VIS, done in the map editor, would look like this:How you'd do this in J.A.C.K., I imagine, would be to place two big brushes textured with VISAREA, each encompassing a room they're associated with, and between them, you place a smaller brush textured with VISPORTAL. I believe that humans are more efficient at optimising a map than the compiler. Anything outside of VIS areas (isn't encompassed by any such brush) would be treated as the outdoors, which is never rendered from the indoors, unless the player sees a special VISPORTALEXIT portal.

Here's an illustration:The compiler would have to strip off the NULL faces etc., mark which face is in which area etc. and that's about it as far as the basics go. In that early state, maps will have to be made in a specific way, for example, you'll have to cut brushes wherever two VIS areas meet:If I develop the compiler any better, it'll automatically cut stuff where two areas meet, which is basically what Doom 3's map compiler does.

We'll see where this goes. Worst-case scenario, I'll just go back to idTech 4 and dumb it down lol.