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DragonMinded / bemaniutils

A collection of utilities which together make up a hobby game services network and associated utilities for historic games in the BEMANI series.
The Unlicense
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(afputils) Any chance of adding MGA support? #70

Closed Zoft123 closed 1 year ago

Zoft123 commented 1 year ago

Been trying to look around to see if any there are any resources/tools/information in regards to extract the various graphics types used in Metal Gear Arcade until the AFP file format but have yielded 0 results thus far. The game doesn't have any IFS files included with it and instead includes solely an 'AFP' folder which contains both various .afp and .xml files. I will upload the folder here for anyone interested in looking into it.

Example of the errors seen when trying to 'print' these AFP files. raise Exception("Invalid bits set in feature mask!") Exception: Invalid bits set in feature mask! also when trying to use the list option it leads to no output.

https://drive.google.com/file/d/1U8jymes0f0hdHElsfdX3ICvZSTWafXuB/view

DragonMinded commented 1 year ago

I had a look and it appears the game doesn't even care about the flag bit that is set on all the files. Possibly it is a version incompatibility flag. I pushed an update to ignore it and I can dump out the bytecode and textures of all the MGA files now. However, it looks like the game was coded similarly to BishiBashi, where the AFPs are not just movies but actual interactive flash files. My bytecode engine does not have support for the majority of what it needs to render nor does it have a place to run interactivity so there's likely not much you can render out of the animations. However, textures and such are available and should even be re-packable.

Zoft123 commented 1 year ago

You are amazing.

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From: Jennifer Taylor @.> Sent: Sunday, March 19, 2023 3:48:26 PM To: DragonMinded/bemaniutils @.> Cc: Zoft123 @.>; Author @.> Subject: Re: [DragonMinded/bemaniutils] (afputils) Any chance of adding MGA support? (Issue #70)

I had a look and it appears the game doesn't even care about the flag bit that is set on all the files. Possibly it is a version incompatibility flag. I pushed an update to ignore it and I can dump out the bytecode and textures of all the MGA files now. However, it looks like the game was coded similarly to BishiBashi, where the AFPs are not just movies but actual interactive flash files. My bytecode engine does not have support for the majority of what it needs to render nor does it have a place to run interactivity so there's likely not much you can render out of the animations. However, textures and such are available and should even be re-packable.

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DragonMinded commented 1 year ago

Note that the XML files are simply binxml properties, presumably used by various AFP files. You can decode them using binutils but they don't yield much interesting info aside from configuration data.

DragonMinded commented 1 year ago

Closing this as I don't think there's going to be much more development on MGA. If you find a bug in texture decoding/encoding feel free to open a new bug.