7.21. 人开枪射击子弹_OOP

7.21.1. 分析

'''
人
类名：Person
属性：枪
行为：fire


枪
类名：Gun
属性：bulletBox
行为：shoot


弹夹
类名：BulletBox
属性：bulletCount
行为：
'''

BulletBox.py

#!/usr/bin/env python
#-*- coding:utf8 -*-
class BulletBox(object):
    def __init__(self,count):
        self.bulletCount = count

gun.py

#!/usr/bin/env python
#-*- coding:utf8 -*-
class Gun(object):
    def __init__(self, bulletBox):
        self.bulletBox = bulletBox

    def shoot(self):
        if self.bulletBox.bulletCount ==0:
            print("么有子弹了")
        else:
            self.bulletBox.bulletCount -=1
            print("剩余子弹: %d发!" %(self.bulletBox.bulletCount))

person.py

#!/usr/bin/env python
#-*- coding:utf8 -*-
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

main.py

#!/usr/bin/env python
#-*- coding:utf8 -*-
from time import sleep
import sys
from person import Person
from gun import Gun
from bulletbox import BulletBox

#弹夹
bulletBox = BulletBox(5)

#枪
gun = Gun(bulletBox)

#人
per = Person(gun)

def viewBar(i):
    """
    进度条效果
    :param i:
    :return:    """
    output = sys.stdout
    for count in range(0, i + 1):
        second = 0.1
        sleep(second)
        output.write('\r开始射击...biu、biu、biu ----->:%.0f%%' % count)
    output.flush()






#人开火
per.fire()
viewBar(10)


per.fire()
viewBar(10)

per.fire()
viewBar(10)

per.fire()
viewBar(10)

per.fire()
viewBar(10)

per.fire()
viewBar(10)

per.fire()
print()

print("开始上子弹到枪中........")
per.fillBullet(10)
per.fire()