Just getting a desired direction using vectors, simple stuff did you know you can use sin and cos to make a circle? A vector = (x,y) Magnitude (length) function = sqrt([x2-x1]^2 +[y2-y1]^2) also can be used for finding the distance between 2 points, you may recognize it as the Pythagorean theorem Convert a vector to a unit vector (a vector with magnitude of 1) = (x/magnitude, y/magnitude) This is a scaled version, but with the same principals and functions. HA, taught you math