Quote Originally Posted by p0lar_bear View Post
I know emotions are used in cutscenes; look at Cortana and Keyes in the opening cinematics. However, like Choking said, the stock bipeds don't have their faces rigged for facial animations past the mouth moving. Moreover, I never actually looked into this kind of thing, so I don't know if it's possible to tie an emotion to an action or whatever.
Those particular emotions are part of the actual cutscene animation, they aren't dynamic, which is what he's asking for. I'd imagine the emotions animation has a hard coded order, since it's an overlay animation. For example: frame 0 = default, frame 1 = smile animation, frame 2 = frown animation, and so on. The engine would probably match these animations to specific actions/events just as it does with dialog. I can't figure out the order for halo 1 tags if it's even used, since I haven't seen any bipeds that use it.