/3/ - 3DCG

>>726082
>quake models didnt use bones
>>726210
>They didn't have bones back then

The in game models didn't have bones, however they were skinned and animated using bones (or the software's equivalent) in the modelling program.
The format conversion would then bake the animations to vertices and quantize the vert positions for compression

Quake's UV mapping is a weird hack that required a 'skin frame' to project a flat UV from. Thankfully you don't have to deal with that anymore as most MDL converters will correctly convert UVs
Quake also has bizarre texture limitations for models, 200 max height but unlimited width. Hexen 2's textures are very wide because of this.