Spoiler
Blender https://www.youtube.com/watch?v=06yXTf5vO4Y
In game https://www.youtube.com/watch?v=Nc4OZBGBtoQ
I use minetest game with https://github.com/stujones11/wield3d. It is necessary to replace the name of the bone with "bone_wield_item_right" in wield3d init.lua. And also need to replace the model and texture in the minetest_game player_api. Animation completely coincides with the standard.
It could be viewtopic.php?p=240955#p240955.
The standard (minetest_game player_api) model has shimmer. If i remove bone_body from my model, then while the model is standing, the object will be displayed correctly, but when walking it will be displayed as in the video (left hand). Do not pay attention to the position of the object, it is configurable. I had also tried wieldview mod from mineclone player, the result is the same.
The problem could be: b3d exporter https://github.com/GreenXenith/io_scene_b3d, Irrlicht, minetest, model.
Minetest version 5.4.1
Blender 2.92.0-4
Model https://drive.google.com/file/d/10uOsz7 ... sp=sharing