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Audio groups

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krzys_h edited this page Nov 3, 2018 · 3 revisions

So DELTARUNE started using audio groups, huh? They appear to basically be detached files with audio data. Audio group 0 is in the data.win directly, higher ones are stored in audiogroupn.dat. The format is just a FORM chunk with just AUDO in it.

The SOND entries have two values, GroupID and AudioID. GroupID specifies the file for the group, and AudioID is the index in AUDO chunk for that group, so the structure goes something like this:

snd_sound1: GroupID=0 AudioID=0
snd_sound2: GroupID=0 AudioID=1
snd_sound3: GroupID=1 AudioID=0
snd_sound4: GroupID=1 AudioID=1
snd_sound5: GroupID=0 AudioID=2
snd_sound6: GroupID=1 AudioID=2
snd_sound7: GroupID=1 AudioID=3

If the game doesn't use audio groups, then AGRP is empty (you don't even get a default 0 entry for the stuff inside data.win!)

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