Runetek 5 Changes

Runetek 5 is the latest version of the RuneScape game engine. It replaced Runetek 5 on 2 September 2009. It changed the line of sight from being radially symmetric to being axially symmetric. Previously, all angles would be the same regardless of which direction the orb was from the character (radial symmetry), but with Runetek 5, the line of sight (and therefore GOP angles are different depending on whether the orb is east or west of the character (this is called the "East-West Divide"). Consequently, angles are symmetric along the north-south axis, but not symmetric along the east-west axis.