class Creature:

    def __init__(self, name):
        self._name = name

    def rec_damage(self, amount):
        return amount - self._armor

class Orc(Creature):
    def __init__(self):
        self._health = 50
        self._armor = 10
        self._damage = 20

    @property
    def health(self):
        return self._health

    @property
    def armor(self):
        return self._armor

    @property
    def damage(self):
        return self._damage

class Goblin(Creature):
    def __init__(self):
        self._health = 50
        self._armor = 10
        self._damage = 20

    @property
    def health(self):
        return self._health

    @property
    def armor(self):
        return self._armor

    @property
    def damage(self):
        return self._damage

def new_health(attacker, defender):
    defender._health = defender._health - defender.rec_damage(attacker._damage)
    return defender._health

def combat(attacker, defender):
    print("{} hits {} for {} damage!".format(attacker._name, defender._name, defender.rec_damage(attacker._damage)))
    new_health(attacker, defender)
    print("{}'s health is now {}".format(defender._name, defender._health))

gwith = Orc('Gwith')
kurrin = Goblin('Kurrin')
print("Kurrin HP: {}".format(kurrin._health))
combat(gwith,kurrin)