Elu
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To be honest, I didn't follow this guide from the beginning (or rather, I did, but only the part about installing GR2 plugins for Maya 6.0).
Regarding animation editing, the process is presumably as follows: We take a file with a long alphanumeric name (which we find through the XDB file), rename this alphanumeric file to .gr2, open it with a program that can open it, edit it, export it to FBX, import it into Maya 2009, and export it through the MA format to Maya 6.0 (before importing into 6.0, we change the version from 2009 to 6.0 in the file using a text editor). Then, we export from Maya 6.0 using a plugin for GR2 files as GR2. (There should be specific settings for this).
After that, we import the GR file into the game. It needs to be placed in the bin/animations folder. I think you can name it the same as the original alphanumeric file. Importantly, don't edit the original data file; instead, create a new archive in the same location, place your mod's files in it, and change the extension to PAK. Unfortunately, I can only provide this much detail for now. Soon (within the first half of next week), my guide on importing models and animations will be ready. In addition, I will explain how to conveniently modify the main game files; I think it will be useful to you (it's located in a topic on this forum).
For now, it might be worth starting with creating a simpler mod, for example, changing a texture or adding a new hero, just to understand how modifications and in-game files work. You can figure this out by taking a simple, ready-made mod from someone else and seeing how it's done.
The video describes exactly this method. The problem is that the existing animation simply doesn't play, even with the correct export. It has an initial pose (the first frame of the animation), but the rest of the animation is missing.
I put the new animation in bin/animations, but I tried to create my own name without replacing the existing animation. Later, I'll see if it works with replacement, as there are many animations in the game that are simply not used, for example, the death animation for the Human hero. I think it should be possible to replace such animations without problems, but this needs to be tested.
I've already created a new hero, which is why I need a new animation. The new hero has the Nightmare model, with a different texture, of course, and I want to slightly edit the idle animation and create a new animation for casting spells. I've already figured out the textures and everything else; only the animations remain. I've put all the necessary files in the correct folders as indicated in the configs, then created an H5U archive and put it in UserMODs. Everything works perfectly. Again, except for the animations, as I had to (hopefully temporarily) use the standard Nightmare animations for the hero. They work in principle, but I need new animations that would look better.
EDIT: Replacing animations doesn't work. I asked Esto100nec, and he says that the import method has been lost.