As some of you may very well know, I stink at expressions and the like. Here's what I want done:

Locator will move only on the x and y axis. For 20 frames tx and ty are 0. Ten frames later, ty increases to 2. Ten frames later, tx increases to 8 and ty decreases to 0.

Here's the tricky part. I need all this to repeat -> repeat from the frame at which it ended if you can understand that.

If you do what I said above, you will end up at frame 40. So, from frame 41 to 61 (20 frames) tx is 8 and ty is 0. Ten frames later, ty increases to 2. Ten frames later, tx increases to 16 and ty decreases to 0 once again.

If it's possible, I could simply key the y axis since it has the same animation every 40 frames and make it repeat itself. ANy suggestions?