Yes, it does. It is assault. Assault is when someone makes you feel threatened. Making someone feel threatened is assault.
Regardless, it doesn’t even have to be that the guy would be liable for assault for you to be allowed to shoot him.
Suppose that they are filming a movie, and through some mistake which is absolutely nobody’s fault, you end up wandering around the set, when this guy comes running up at you with a big (fake) machete screaming he is going to kill you (he thinks you are an extra, and that is the scene). So you pull out your .45 and shoot him dead.
Is he liable for assualt (under my case where it was nobody’s fault)? Nope.
Are you liable for killing him? Nope.
Nope, nope, nope.
In every state in this country you are allowed to attack someone who is making you feel threatened, if a reasonable person in that situation would feel threatened.