I was looking to create a specific segment for my game that had a trigger happen when the player looked at something (it could be a model or a pivot, either would work).
Thing is how would this be possible? Since we're talking about the player's vision and not collision I have no idea how to even start doing this.
Here's an example, where you see the player running around everywhere, but only when he looks in a specific direction (in this case, up) does something happen.