var i = 0

onevent buttons



if i < 0 and i < 32 then
   call leds.top(32,0,0)
else
   call leds.top(0,32,0)
end
if button.left ==1 then
i = i-1
end
if button.right ==1 then
i =i+1
end

if button.left == 1 or button.right ==1 then
	call leds.top(0,32,0)
	call leds.circle(i,i,i,i,i,i,i,i)

elseif  button.center == 1 then
	call leds.top (0,0,32)
if  button.forward ==1 or button.backward ==1 then
   call leds.top(32,0,0)
end

end