Fortunately this wasn't very hard, as the SP files are just raw 16x16 x68000 format 'raw sprite data'! (You can also use it to load the RAW sprite files saved by akusprite itself) The PAL files are also in raw X68000 format, so I've added support for those too!
the 16x16 sprite 'patterns' in the file are not entirely 'neatly' organized, and with no extra info to combine them into characters as they would appear onscreen, there's a bit of a random assortment of 'arm and leg' sprites, but you can use the importer to get the basic bitmap data out!
- ksnip_20230925-124219.png (90.62 KiB) Viewed 2502 times
On the 'File Format' tab, "SpriteLoad Width' will chage the width used by the imported data, I find a narrower import width width of 128 makes a good job of recombining the patterns in the file into viewable characters.
If needed 'SkipSprites' can be used to skip one or more 16x16 blocks... note SpriteLoadHeight has no effect -this was used by the NeoGeo which loads in 'down then across' order - the SP file is 'across then down'
- ksnip_20230925-124003.png (11.77 KiB) Viewed 2502 times
Akusprite editor is opensource, you can get the source code from the C# folder in:
https://www.chibiakumas.com/z80/sources.7z
You can also get the updated AkuSprite Editor in the latest 68000 sources:
https://www.chibiakumas.com/68000/sources.7z
Enjoy!