Bumpdate with some hopefully-fun news:
I've spent some time tinkering with Necrodome images and managed to figure out the format for the HUD sprites. Funnily enough, they happened to be nearly identical to the
Doom Patch format, the only differences being that the spans are done by rows, not columns, and the span header is only 2 bytes long (eliminating that 3rd 'garbage byte'). Makes sense, being a Raven game and all, that they used a format similar to their Doom-engine games.
What I do find bizarre, though, is how only a few graphics (mostly just HUD pieces) use this format. Everything else (the previously-rippable stuff like enemies, pickups, effects, and vehicle skins) are simply 8bpp RAW images with Color #0 as transparency. Granted, Necrodome's engine is a bit of a mess IMO, so they may have ended up hacking around a bit to get it to work.
Anyhow,
download link. It's just the HUD weapon sprites for now (truecolor but extracted using Necrodome's palette meaning no color loss/difference), but I'm hoping to get a proper rip of all the enemies, items, and effects soon, since I figured out that hacking the palette in NECRO.POD to have color 0 as cyan eliminates the black-transparency issues. Whoo!
Finally, for the official record, I spoke to Weasel on IRC about this and he's allowing the resource to be posted since it's a bit more than a simple rip (due to the effort taken to rip the sprites -- I wrote a viewer/converter to decode the format). Just before someone asks.
[EDIT] NeuralStunner asked about 'em, so I figure I may as well post the
pickup sprites for the weapons as well. They may not be appropriate for standard pickups since they look like big, bulky things meant to be mounted on a vehicle, but there you go anyway. No pickups for the H-V Gun or the Laser either -- since they're the starting weapons, the pickup sprites don't exist. Format is truecolor .BMP with a cyan background (no transparency) 'cause that's what XWE extracts them as. I'll .PNGify everything before the proper resource post.