alt Hacker NewsWC code is likely not (legally) available, but Wolfenstein and Doom both did similar palette tricks and are documented in the Black Books for each - https://fabiensanglard.net/three_books_update/index.html
Code for those is available.
WC code is likely not (legally) available, but Wolfenstein and Doom both did similar palette tricks and are documented in the Black Books for each - https://fabiensanglard.net/three_books_update/index.html
Code for those is available.
Oh rad! Thanks for the heads up. I'll do a post-dev comparison to see what I land on and what was done here.