I made another thing! …sort of.
This is a re-purposed example of a plugin script that’d export each layer as it’s own png image.
I’ve adapted it to add the underscore between the name of the file and the name of the layer (i.e. kad_swarmer and DIFF) and to instead export to TGA with RLE compression always turned off (cause having to check for that every time bugged me)
This should make users of the free-combo GIMP and Blender have an easier work flow that allows them to create all 8 textures HW uses (DIFF, NORM, SPEC, REFL, TEAM, STRP, PAIN, GLOW) on the same image with each one simply being a different layer. Makes it a little easier to visualize things like TEAM or STRP maps when you can have them overlayed on the DIFF
Just make sure the layers are named like one of the list of 8 above in all caps and the rest is handled for you.
Just drop the .py into
C:\Program Files\GIMP 2\lib\gimp\2.0\plug-ins