completed functionality for Armour Points (AP)

completed functionality for Armour Points (AP)

Each piece of armour has its own pool of "Armour Points". When you take
damage, the monster targets specific pieces (HEAD | ARMS | CHEST | LEGS)
that correspond with those pieces of armour. The armour takes damage,
depleting its AP.

When that particular piece is out of AP then your HP gets damaged
directly.

As well, monsters have their own AP setting that corresponds ot the same
pieces. When you attack, you get to target the specific item you want.