Lasriel

Saw this while I came to make a post about a tool I made. Hopefully it will help with what ever you are doing. Also let me know if you end up releasing anything made using the tool, especially if the producer name has anything to do with "Sugar".

Couple years back I started a project to learn some reverse engineering and made a tool for working with .aos format used by Princess Sugar, Sugar Pot and LiLiM. I've had it lying around for some time now and finally had time to make a release version for it. I have made full support for extracting and repacking files into .aos arhives but some of the in-house formats have limitations for repacking at the moment since I haven't had time to make full support for them. .scr files have full encoding and decoding support. Files with limitations: .abm | Partial support (extract only) | Their compressed bitmap format, has frame based animation support, animation data is extracted alongside animation frames to json for the files that are animated. .msk | Partial support (extract only) | Grayscale bitmap used for transition animations and effects, just a normal 8-bit .bmp file but has renamed extension. I have mostly tested it with titles from Sugar Pot and Princess Sugar. (since those are the only ones I own copies of) But the tool should work with visual novels made after 2006. You can download the tool from my repository here. Note: The engine only supports Shift-JIS encoded text files, any other encoding will induce crash. (same goes for save file naming) The engine has a feature that lets you put non encoded files to specific directories relative to the game executable and it will load them on higher priority than the ones packed into .aos arhives. For example you can make directory named txt to the same folder that the executable is in and put the non encoded script file inside it, the engine will load that file instead when playing. I found this when I was digging into the engine and it is most likely used during development for faster workflow. This can be also done with sounds and graphics. If there are issues with the program you can leave an issue on github or contact me directly for support. I'll try to solve them when I have time.