Print something to a polygon/entity?

[jim]

[Spike]

[MeTcHsteekle]

[Urre]

[jim]

[Urre]

The polygon drawing in CSQC does just what you'd imagine it does, it draws polygons. In other words, yes, you could make Doom3 like screens if you like. But the point is that you really need to code all of it yourself, but the possibility is there.

It doesn't quite work the way you imagine it, it doesn't alter the texture on a given polygon, but rather, you can draw new polygons with a slight offset from the surface you want them to be displayed on. This is, simply, how polygons work. It's very rarely necessary to alter the texture, but rather, new polygons are drawn in front of it, with such a minor offset that it's impossible to spot. This is how decals in games are done. This is also how the Doom3 screens were done.

You'd need to somehow indicate the position, size and direction of the surface you want to show your offscreen HUD on (I recommend either by using the getsurface* builtins, or by external files which point to a certain tag on a model, together with info for surface size), and draw your 3D HUD based on that information, clipping the polygons and aligning the textures based on the direction and size of the surface. Depending on your level of knowledge about polygon drawing, this is either easy or hard, but in any case a time-consuming task.

All of the features you describe would be perfectly possible, but don't imagine it to magically work, you have to code all of it, the scrolling, everything. The difference with CSQC and SSQC, is that things like this are finally possible.

[Spike]

[Urre]

[jim]

[Urre]

It is relatively up to date, but it is far from all. Your best bet is to use one of the available CSQC source bases, and just experiment your way forward, in order to learn CSQC.