Hey! I'm new/ish / to half life, I've been working on a project for a bit and while I'm decently experience with adding custom textures, sounds, decals, and mapping, I'm not all that familiar with modding code-wise. (if that's required for this)
I've been looking around and I cant seem to find any documentation on anyone else trying to do this.
what I'm trying to do is have an image appear on the players screen, what I'm mainly trying to do with this is have a little box with character
text in it and a little picture of the character talking to the left of it.

I feel like I've seen this done before in a mod, don't remember what it was called, it was some kind of wave defense thing where the player was running away from a Gargantua I think, and the mod had a picture of a cat show up to block the players view.
I saw it in a video on a mod for Black Mesa which I know isn't goldsource but I believe I saw a version that was running on the original half life and doing the same thing. Could've been Hl source though.
If anyone knows anything about this or how I could manage to do it, I'd greatly appreciate the help!