The probability that this Enemy will change weapons at a particular time
step is changeWeaponProbabilityNumerator() out of
changeWeaponProbabilityDenominator().
The probability that this Enemy will change weapons at a particular time
step is changeWeaponProbabilityNumerator() out of
changeWeaponProbabilityDenominator().
A special overridable method to inform the view whether or not this object should be "blinking."
(The idea is that Jeff should blink while he's invincible.)
(As such, this is false for virtually all GameObjs.
In the interest of not letting enemies run around on their own (and into pits, even),
we might choose to only move an enemy if they've come within a set distance to Jeff.