[kadet.89]

To see how it works one can create a monster_generic entity with zombie classic model, the extension is not needed for that, only hummer editor. The prediciton looks wierd, all animations are jumpy and have low framerate, but for slow NPCs like classic zombie it is not a big problem.
Think I don't like about this extension is a lot of signatures and voffsets are required. Next big update and the gamedata needs to be updated, which is not trivial for games like CS:GO