No, there's no such option. If you want that, you would have to create an additional animation that does the transition. If they are looking pretty similar at index 0, it might be a good idea ot switch animation only if 0 (or close to 0) has been reached, but i'm not sure that anybody will even notice. I think i tried something similar in Alien Runner, but i also think that i gave up on it, because it was too much of a hassle for no real gain.