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Topics - Mr. Saturn

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ROM Hacking Discussion / Move NES sprite position
« on: April 02, 2020, 12:48:01 pm »
A couple days ago I made a post kinda like this about adding sprites, but I've since given up and made a few compromises.
I'm working on a Super Mario Bros 2 hack, and at the moment I'm changing the characters.
The whites in most of the characters' eyes are seperate sprites rendered behind the main sprites.
I was just wondering if it's possible to move said eyeballs over a little bit to fit the new characters.

ROM Hacking Discussion / (NES) Add sprites to screen
« on: March 31, 2020, 01:11:42 pm »
So I'm working on a hack for Super Mario Bros. 2, currently changing the characters. I recently learned that the white pixels that make up the characters' eyes are actually separate sprites behind the characters.

I found where the sprites are located, but their placement doesn't fit my new sprites.
I need two sprites side by side, covering the entire head, rather than just the front half of it (I found that SMB2 uses 8x16 sprites if that's helpful). This applies to every character, so using up their eyeball sprites for this would be fine.
Another problem is that Toad also needs eyes, but one thing at a time I guess.

If this doesn't work I guess I could find some way to change the palettes of each character's heads (and this would let Toad also have proper eyes), but I don't know how doable any of this is.

I found SMB2's disassembly code which seems helpful, but since I'm still figuring that out, so I thought I may as well ask here.

I'm working on a hack for Super Mario Bros. 2, and I need to edit the white pixels on the eyes of the playable characters. They aren't part of that character's palette, and are represented as black (ordinarily clear) pixels on the sprites.
Only those specific pixels on each sprite will be white instead of clear.

So my question is: is there any way to change which pixels are white?
Or alternatively, could I just give those sprites a different palette from the rest of the character?

Newcomer's Board / entire rom palette tinted green
« on: January 02, 2020, 05:53:52 pm »
Whilst hacking the Earthbound Zero ROM, everything became tinted green. I edited it, saved it and came back to it later, and it was tinted green. I checked the palettes but they were unchanged.
Unfortunately I have no idea what I was doing before this happened. So I don't know if anything can be done about it.

Newcomer's Board / Replacing the palette of one ROM with that of another
« on: October 08, 2019, 08:09:08 pm »
I've been modifying the Mother 25th anniversary edition ROM to my liking,
in order to get the best of both worlds between this and the original.

I'm trying to revert it to the original palette, but every palette editor
I found does not support importing/exporting palettes, or anything other
then editing each color one by one.

I've seen lots of tutorials on how to replace individual sets of colors
with other colors, but what about essentially copy and pasting all the
colors from one version of a ROM to another?

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