Specify that this actor is supposed to chase another actor
Optional chaseOptional: Should the actor change its x velocity?
Optional chaseOptional: Should the actor change its y velocity?
Optional multiplier?: numberOptional scaling factor for changing how fast the actor chases (default is 2) (useful when chaseInX or chaseInY is false)
The speed with which it chases the other actor
The actor to chase
The Actor to which this movement is attached
Do any last-minute adjustments related to the movement
A rule for moving by chasing some other actor