Tweaked isOnStage method.
Restructured so the entity sends the damage, instead of entity damaging
itself when it comes into contact with another entity.
Awe yes, got collision control between enemy mobs to work!
Next need to work on projectile knockback.
Also have to change the mob spawner, because right now if I want to load
to many mobs at once the game freezes up since it is spawning every mob
before doing any other actions.