Gameboy Development Forum

Hello!  I'd like to be able to change the palette order of sprites in my game.  From reading dozens of articles on the internet, I see that there are two registries that are constant values for the sprite palettes that the Game Boy can assign to sprites: OBJ0PAL and OBJ1PAL. I have not been able to find any info on how to edit or even call these registries.

I am a complete novice when it comes to coding, so I apologize for my ignorance.  I really wanna learn and I picked game boy games as a way to give myself satisfying and motivating projects. I've been using GBDK and writing in C.  I know almost no Assembly.  I can read a little and kinda make out how it works.  I'm not opposed to modifying the assembly file GBDK's compiler outputs, but I'd rather be able to do this in C, to better keep myself organized (and not have to manually edit the assembly file every time I wanna test something else out).

My goal is to have another color, besides white -- specifically black -- be the transparency color for sprites so that I can use white in their design.

Anyway.  What are my options for doing this?  I've tried my best to figure it out on my own, but my brain has stopped working and it's time to ask for help. Thanks!

(I just wish it was as easy as swapping the BG palette).

Last edited by kfmush (2021-12-26 14:49:48)