"Speed" is how much of the distance to the target + overshoot offset the object covers per frame "Overshoot speed" is how much of the distance to the cursor's velocity - calculated by how much it moves per frame - the overshoot offset covers per frame "Overshoot" is what the overshoot offset is multiplied by before being added onto the target position
For a while now I've been thinking of an easy way to do a smooth follow movement script that overshoots, but without using object velocity. I came up with this solution in bed when i couldn't sleep
