day23 02 combination (continue the dog fight game)

Three characteristics of object-oriented: inheritance polymorphism encapsulation

Let's talk about the combination

Combination: the property value of one object is the object of another class: object, property and property (generally there are two points)

Continue to expand the little game of man dog war in day22 01 to explain the existence of the combination. Compared with the previous game, this time an additional weapon equipment class is added, and the weapon has its big moves. First of all, all the attributes of a weapon are: the name of the weapon, the attack power the weapon has, the number of times the weapon can be used, and the money needed to purchase the weapon. So before you use the weapon every time, you need to see if you have enough money. If you don't have enough money, you need to recharge it first. After you purchase the weapon every time, you need to deduct the corresponding money. The code is as follows, with related comments:

# Definition of character
class someone:
    def __init__(self,name,blood,aggr,sex):  # self Object creation and initialization
        # Assign a value to a character's attribute to get a specific character
        self.name=name
        self.blood=blood
        self.aggr=aggr
        self.sex=sex
        self.money=0

    # Attack skills possessed by characters
    def attack(self,dog):
        dog.blood -=self.aggr  # If the character doesn't attack the dog, the dog will lose the corresponding amount of blood

    # Equip characters with weapons
    def get_weapon(self,weapon):
        if self.money>=weapon.price:  # Only when the money possessed by the character is greater than or equal to the price of the weapon and equipment can the character possess the weapon and equipment
            self.money-=weapon.price  # After buying weapons, the money will be deducted accordingly
            self.weapon=weapon  # Add weapons
            self.aggr+=weapon.aggr  # When a character adds weapons and equipment, its attack power equals its own plus weapon's
        else:
            print('Insufficient balance, please recharge first')  # Remind people to recharge when they don't have enough money to buy weapons and equipment

#  Definition of dogs
class dog:
    def __init__(self,name,blood,aggr,kind,):  # self Object creation and initialization
        # Assign a value to the attribute of the dog class to get a specific dog
        self.name=name
        self.blood=blood
        self.aggr=aggr
        self.kind=kind
        self.money=0  # Default characters don't have money at first

    # Attack skills of dogs
    def bite(self,someone):
        someone.blood-=self.aggr  # Every time a dog attacks a character, the character loses the corresponding amount of blood

# Add a weapon and equipment class
class weapon:
    def __init__(self,name,aggr,sustain,price):  # self Object creation and initialization
        # Assign attribute value to weapon equipment
        self.name=name
        self.aggr=aggr
        self.sustain=sustain
        self.price=price

    #  There's a big move in weaponry double_kill
    def double_kill(self,person,dog):
        if self.sustain>0:  # Only when you have the remaining weapon use times can you use the big moves in the weapon
            person.blood-=self.aggr*2  # Every time you use a big move, the life of the character will lose twice the attack power of the weapon, that is, the big move of the weapon is twice the original attack power of the weapon
            dog.blood-=self.aggr*3  # Every time a big move is used and the dog is hit, the HP of the weapon will be 3 times of the attack power
            self.sustain-=1  # Each time you use a big move, the number of weapons you use will be reduced by one

person1=someone('Wang Zhaojun',1000,300,'girl')  # Character instantiation
print(person1.name)
dog1=dog('Yo-Yo',2000,500,'Poodle')  # Instantiation of dog character
print(dog1.name)
person1.attack(dog1)  # Conduct character attack on dog
print(dog1.blood)  # Because the attack power of a person is 300, when a character attacks a dog, the dog will lose 300 HP, leaving 1700 HP
weapon1=weapon('Dog stick',100,3,1000)  # Weapon instantiation
person1.get_weapon(weapon1)  # Equip characters with weapons and dog beating clubs
person1.money=2000  # During the equipment process, it is found that the money possessed by the character is not enough to buy weapons and equipment. Remind to recharge, and then recharge 2000
person1.get_weapon(weapon1)
print(person1.weapon.name)  # Success in equipping people with weapons
print(person1.aggr)  # When a character gains weapon equipment, the attack power equals his own attack power plus the attack power of the weapon is 400
person1.attack(dog1) # The character gains the weapon before attacking the dog
print(dog1.blood)  # The dog will lose 400 HP, i.e. 1300 HP left at this time
person1.weapon.double_kill(person1,dog1) # Big moves of characters using weapons
print(dog1.blood)  # The dog will lose 300 HP, 1000 left
print(person1.blood)  # People will lose 200 HP, 800 left

In the above code:

Personan1.weapon is an object of the weapon class

Personan1.webon is a property value of personan1

Double'u kill is another attribute value of person1.weapon

The attribute value of one object is the object of another class, forming a combination