I want to make a circular life orb that displays the life points of my char(like diablo II etc..)

My life variables are Hp1 for current hp, and hp2 for max hp


If you could show me a bit how i could do this and explain to me so i could implent that in my project, i would greatly apreciate.

Btw any circular shape will do, just dont make it to big :P.

thx in advance.