This is an utility for working with game files of Higurashi no Naku Koro ni visual novel released for Nintendo Switch.
rom-list romname - list files in a rom
rom-extract-all [--regex=filename_regex] romname destination-directory - extract raw files (optionally filtered by regex) from rom
rom-extract-all-with-decode [--regex=filename_regex] romname destination-directory - extract files (optionally filtered by regex) from rom, decoding known formats
[rom-]pic-decode [romname] picname outname - decode a PIC file (optionally from rom) to png
[rom-]sound-remux [romname] nxaname outname - remux a NXA file (optionally from rom)to opus
[rom-]font-extract [romname] fntname outname - extract an FNT file (optionally from rom) to a bunch of png files
[rom-]txa-extract {--ignore-file-size} [romname] txaname outname - extract an TXA file (optionally from rom) to a bunch of png files.ignore-file-size makes the tool ignore the file size specified in txa header
[rom-]sysse-extract [romname] syssename outname - extract a sysse.bin file (optionally from rom) to a bunch of wav files
[rom-]bustup-extract [romname] bustupname outname - extract a BUP file (optionally from rom) to a bunch of png files
[rom-]mask-extract [romname] mskname outname - extract a MSK file (optionally from rom) to a png file
[rom-]scenario-decompile [romname] snrname outname - disassemble an SNR file (optionally from rom) to a listing, a json file containg head data and raw dump of code section
scenario-build asmdir outname - build an SNR file from a listing and json file containing head data (same structure as decompiler)
rom-replace-file origrom srcfile targetname outrom - quickly replace a file in ROM by another one. Does not remove previous file contents, so avoid using this repeatedly
rom-build outrom [infile targetname]... - build a ROM from scratch from specified pairs of source files and their target names
rom-build-from-dir outrom indir - build a ROM from scratch from specified root directory. All files in the directory will be put to the rom with the same name
txa-encode srcdir outtxa - build a TXA from the specified directory (needs anindex.txt file to function)
scenario-layout [--ignore-logset] fntfile asmfile outasmfile - transform the specified scenario asm file, doing word wrapping according to mixed English/Japanese rules. Specify--ignore-logset to make the layouter not modify messages ofLOGSET. Useful, as the original game script has a typo there (r@ vs@r).
pic-encode {--origin origin} {--quantize} {--dither} {--lossless-alpha} inpng outpic - encode a png file into PIC, setting the origin as specified by--origin (default -Bottom). Optionally --quantize the colors to 256 using Wu's algorithm to allow to use more effective dict encoding. Add --dither to also apply dithering, improving the overall resulting look, but increasing the file size slightly. You can also specify --lossless-alpha not to apply dithering to alpha channel. This will reduce the stress on ditherer and will increase the overall number of colors, but, obviously, will increase file size.
pic-encode-roundtrip {--quantize} {--dither} {--lossless-alpha} inpng outpng - encode a png file into PIC and decode it back. Allows to test the results of lossy compression. Also prints encoded size and Mean Square Error between the original and encoded image.