Man armour monsters

From LSWiki

Description

There is usually no need to do set_ac() in monsters if your monster is of an established race; the body code will set up its natural armour, if any, for you.

An armour class set on a monster reflects the natural toughness of its skin, or other factors that increase its resistance to damage. If your monster does not have such factors, then do not give it a natural AC.

For reference in setting up armour classes on monsters, invae have a default AC of 5, sleestak 4, dracon 3, lothar 6, and dragons 10.

Note that this natural armour is _cumulative_ with armour worn.