Spiral Movement Pattern

I’m trying to move an object in a spiral pattern starting which slowly works it’s way to the center of the screen.

Someone solved a similar problem with a different language here. If anyone could help me, I’d really appreciate it. I’m really terrible at math problems like this.

Thanks a lot,
Clay [import]uid: 62528 topic_id: 18987 reply_id: 318987[/import]

Okay, so I’ve got the object circling the center using a pivot joint, but I’m not sure how to shorten the joint over time (or if that’s even possible).

I figured using a joint would be easier than figuring out the math for movement on each Runtime update, but I’m open to the math if anyone knows how / can explain the link to me.

Thanks a lot,
Clay [import]uid: 62528 topic_id: 18987 reply_id: 73123[/import]