I haven't quite figured out the mathematical variables that control the movements of the ghosts, but I have figured out certain things.

1. That when Pac gets to close to the ghosts, it causes them to change directions.

2. That they for the most part change directions at right angles.

3. That they for the most part do not co-ordinate their movements.

4. That when pac gets to close to more than one of them, the tumbling selector makes a simultanious choice for the two or more that Pac is closer to.

This means that by moving towards the ghosts, you can cause them to move away from you, rather than towards you. I'll post later on about the specific patterns of inky, blinky, winky, and pinky. Or whatever the fuck their names are. I believe that the specific direction changes are governed by a shifting pattern of right angle calculations which has a tumbling selector. In other words, they only -appear- to be random and are in actuality predictable. Unfortunately, in order to figure out the variables that govern their movement I would need to watch them move through their patterns without pac man on the screen. So for now I'm not quite sure how I'm going to figure out the patterns of the ghosts, but for now I am going to continue to try to figure it out. Number 4 does not necessarily mean that they chose their movements. I just mean that they change movement vectors simultaniously, though it is not usually cordinated towards Pac man.