I got some very sad news (at least for me)
I completed the blender model exporter 3 days ago. I immediately implemented the import functions to the tool, in order to try it ingame, and to my great question, the game crashes.
I've tried a ton of different things, i've reviewed all my exporting code, i've made a lot of comparisons with red mc exported files, but the game keeps crashing.
The only explanation i have concluded to, is that the game checks the integrity of the models using checksums or something like that.
So even if i can fully replicate the raw model files, i can' find a way to bring them back into the game, without the game to crash

This means that until this fucking issue is resolved, there will be no 3d model modification, or uv modification. The blender script can be used for creating perfect textures for the models. But nothing more than that. I also don't need to point that the exporter i wrote is pretty much useless for now -.-
I've also implemented raw GZIP/ZIP and OGG import as well. The 3rd one is obvious, but the 2 first ones, are much much helpful to any ambitious hex editors out there
I highly encourage anyone that wants to help in order to find what is wrong with the archives or the compression or the game (i have no idea whose fault this is), to use this methods in the next version of the tool, to replace files in the archives, especially the gzip one.
I've also made a small fix to the blender script and bone weights are imported correctly in blender. Now the bones work much much better.
