Added a constructor to WeaponPickup
Implemented remove in WeaponPickup
Made WeaponPickup implement IPickup
Implemented affectMe in WeaponPickup
Implemented collision detection in WeaponPickup
Implemented getHeight in WeaponPickup
Implemented getWidth in WeaponPickup
Implemented getPosition in WeaponPickup
Added the type WeaponPickup to IGameObject
Implemented getType in WeaponPickup
Implemented accept in WeaponPickup
Implemented one visit in WeaponPickup
Implemented a second visit in WeaponPickup
Added comment to two methods that do nothing
Implemented a method in WeaponPickup that will probably never be used
Implemented clone in WeaponPickup