I was asked on Twitter recently for references for my mention of “consent systems” in my talk on “What AR and VR can Learn from MMOs.” I didn’t have any handy at the time but today I had some free time so I went looking.
The basic concept can be found throughout roleplay social virtual worlds such as MUSHes. (For example: Black Ops MUSH, The Lady’s Cage MUSH, Star Wars Omens). These sorts of worlds typically do not have combat systems, and rely heavily on free-form emotes (though the commands there more often have the syntax “pose” or “emit” or the like). Like any other full roleplay environment, of course, fights and conflicts happen all the time.
This description of how it happens in practice is pretty good: