battle.py

class Equipment:
    pass
   
class Weapon(Equipment):
    def __init__(self, damage):
        self.damage = damage

class Armour(Equipment):
    def __init__(self, defence):
        self.defence = defence

class Character:
    def __init__(self, name, startingHealth):
        self.name = name
        self.health = startingHealth
        self.equipment = []
   
    def speak(self):
        print("%s makes a sound" % self.name)

    def takeDamage(self, attacker, amount):
        # Prevent healing from damage
        if amount < 0:
            print("Can't take negative damage")
            return

        # Reduce the character's health by the amount of damage
        self.health -= amount
        print("%s took %d damage from %s" % (self.name, amount, attacker.name))
   
    def displayStats(self):
        print("== %s ==" % self.name)
        print("Health: %d" % self.health)
        print()

    def equip(self, equipment):
        self.equipment.append(equipment)

    def getAttackPower(self):
        totalAP = 0
        for item in self.equipment:
            if isinstance(item, Weapon):
                totalAP += item.damage
        return totalAP

class Game:
    def __init__(self):
        # Create the characters
        self.playerCharacter = Character("Player", 100)
        self.enemyCharacter = Character("Enemy", 50)

        # Give the characters some weapons
        self.playerCharacter.equip(Weapon(10))
        self.enemyCharacter.equip(Weapon(5))

        self.currentCharacter = self.playerCharacter

        self.gameOver = False

    def getNextCharacter(self):
        # TODO: Refactor this for more than 2 characters eventually
        if self.currentCharacter is self.playerCharacter:
            self.currentCharacter = self.enemyCharacter
        else:
            self.currentCharacter = self.playerCharacter

        return self.currentCharacter

    def displayStats(self):
        self.playerCharacter.displayStats()
        self.enemyCharacter.displayStats()

    def getOtherCharacter(self):
        if self.currentCharacter is self.playerCharacter:
            return self.enemyCharacter
        else:
            return self.playerCharacter

    def isOver(self):
        return self.playerCharacter.health <= 0 or self.enemyCharacter.health <= 0

game = Game()

# While the game is running
while True:
    # Display the characters' stats
    game.displayStats()

    print("%s's turn" % game.currentCharacter.name)

    # Perform the battle action for the current character
    game.getOtherCharacter().takeDamage(game.currentCharacter, game.currentCharacter.getAttackPower())

    # Change characters
    currentCharacter = game.getNextCharacter()

    if game.isOver():
        break

print("Game Over")