User blog comment:DE-Note/RWBY Game idea/@comment-10380701-20141118053510/@comment-10380701-20141119014441

The AP system is more or less a limiter preventing you from spamming endless combos. You should have more than enough to pull off a full 10-hit attack chain though.

That said, my idea was that AP's more negative effects are seen if you attack WHILE the bar is empty. It's not a proper stamina bar that way.

That, and I personally love the concept of "Float like a butterfly and sting like a bee." so there's some bias on how my AP system works. >_>