touch wheel like hero of sparta™ lite

Hi All,

How I made a touch wheel for player movements like "hero of sparta™ lite"?

Please help me with some sample.

 

you need 2 bitmaps at first (use the unity GUI or your own solution). anyway the center of the big one = is the zero movement point. then sliding with your finger in the "bigger" wheel sets the speed up vector for your hero in 2 dimensions (so if your finger is in the right of the wheel you get: X=1 and Y let me say -0.02f) now you simply add this values to your hero (as physics force(x,0,y) this should work.