面向对象之Shooting

面向对象之Shooting

对象	类名	属性	行为
人	Person	gun	fire
枪	Gun	bulletBox	shoot
弹夹	BulletBox	bulletCount

######创建BulletBox类

class BulletBox(object):
    def __init__(self, count):
        self.bulletCount = count

创建Gun类

class Gun(object):
    def __init__(self, bulletBox):
        self.bulletBox = bulletBox
    def shoot(self):
        if self.bulletBox.bulletCount == 0:
            print('子弹打光了，请装弹')
        else:
            self.bulletBox.bulletCount -= 1
            print('剩余子弹%d发' % (self.bulletBox.bulletCount))

创建Person类

class Person(object):
    def __init__(self, gun):
        self.gun = gun
    def fire(self):
        self.gun.shoot()
    def fillBullet(self, count):
        self.gun.bulletBox.bulletCount = count

引用类、创建对象

# 引用类
from person import Person
from gun import Gun
from bulletbox import BulletBox

# 对象
bulletBox = BulletBox(3)
gun = Gun(bulletBox)
per = Person(gun)

per.fire()
per.fire()
per.fire()
per.fire()
per.fillBullet(3)
per.fire()
per.fire()
per.fire()
per.fire()