duster movement:
x = 100
y = 100
a = 0
function rotate(x,y,a)
return xmath.cos(a)-xmath.sin(a),
xmath.cos(a)+ymath.sin(a)
end
function TIC()
local r1,r2 = rotate(12,13,a)
local dotx = y+r1+a
local doty = y+r1
a = a + 0.1
cls(0)
pix(dotx2-100-r1-y,a3,12)
end