Half-Life 2 Choreo System Research

well. i&#x27;ve been doing some heavy research into Half-Life 2&#x27;s choreography system and all of the related subsystems - facial animation, lipsync, and general scene management. here&#x27;s my current working theory (in the broad sense) of how the choreography system in the Source Engine works, as of 2004: the character model is authored with morph targets corresponding to several standard…