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Tutorials » Actionscripting

Detecting the Mouse Angle - Easily
Author: Jorian Cunliffe

There are many ways to determine the mouse angle, the main method currently in use involves the use of sine lookup tables and lots of fairly complicated looking loops. What we all want is a fast easy way to determine the mouse angle. This method approximates the angle. The movement of a bullet from the origin to the mouse is also calculated, however this is exact.

Glossary of Terms

Origin - the spot where the mouse angle is relative to.
Normalisation - making two values sum to 1, whilst maintaining their relative proportions.
Quadrant - the direction of the mouse angle, for this tutorial they are:
      up and left
      up and right
      down and left
      down and right

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