RAI PAY ATTENTION TO THIS TOPIC, YU Sprites Options

[Dr Strum]

Okay Rai, with no internet, I've been working on the sprites from YUPSP, or, in other words, the PTA files found on the YUPSP UMD. I have made some great progress, however, I cannot quite figure out how the sprites are assembled based on the PTAs. I have some sort of ordering data, but I think it might be more along the lines of animation, rather than actual frames. So, I shall give you what I have at the moment. If I don't continue on this later I'll probably be working on the compressed files until I get a response from you.

Research (read the top few paragraphs on PTA files, as well as the brief spec about halfway into the text)
Icon PTA
Icon TGA
Fry TGA
Fry PTA


Anyone else that wants to take a crack at it is welcome.

[Dr Strum]

So, I have two mysteries regarding the PTG files before I have them totally figured out.
1) The PTG files for Hexyz for some reason have a lot of their block data multiplied by 0x40... Or maybe the Yggdra ones have them divided by 0x40 and one is easier for calculation than the other? Don't know. I have a simple code work around, but it's still a curiosity.
2) For some reason all the colours are outputting properly but the skin. The skin is transparent in most image viewers, and absolute gibberish colours in some others.

Otherwise I could move on to other, for the most part easier file formats.

Also, I figured out why PTG files consist of two PTX files: it's an offshoot of the LIM file format. Having two embedded files allows for saving on space (as, if you remember, the LIM files, while conserving a lot due to their not including alpha pixels wasted a lot to remain block-aligned).