面向对象案例
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案例:人开枪射击子弹
一、分析
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人类
类名:Person 属性:gun bulletBoxList 行为:fire() downBulletBox() upBulletBox() reloadBullet()
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枪类
类名:Gun 属性:bulletBox 行为:shoot()
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弹夹类
弹夹 类名:BulletBox 属性:count bulletList 行为:
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子弹类
子弹 类名:Bullet 属性:kj 行为:
二、实现
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子弹类(bullet.py)
class Bullet(object): def __init__(self, kj): self.kj = kj
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弹夹类(bulletBox.py)
class BulletBox(object): def __init__(self, count): self.count = count self.bulletList = []
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枪类(gun.py)
class Gun(object): def __init__(self): self.bulletBox = None def shoot(self): if len(self.bulletBox.bulletList) == 0: print("没有子弹了,请更换弹夹!") else: self.bulletBox.bulletList.pop() print("剩余%d发子弹"%len(self.bulletBox.bulletList))
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人类(person.py)
from bullet import Bullet class Person(object): def __init__(self, gun, bulletBoxList): self.gun = gun self.bulletBoxList = bulletBoxList def fire(self): if not self.gun.bulletBox: print("请添加弹夹!") else: self.gun.shoot() def downBulletBox(self): # 没有子弹的弹夹 temp = self.gun.bulletBox self.gun.bulletBox = None return temp def upBulletBox(self, bulletBox): self.gun.bulletBox = bulletBox def reloadBullet(self, bulletBox, count): for i in range(count): #创建子弹 bullet = Bullet(7.62) bulletBox.bulletList.append(bullet)
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主文件(main.py)
from person import Person from gun import Gun from bulletBox import BulletBox def main(): #创建一把枪 gun = Gun() #创建5个弹夹 bulletBoxList = [] for i in range(5): bulletBox = BulletBox(7) bulletBoxList.append(bulletBox) #创建一个人 per = Person(gun, bulletBoxList) #让人给每个弹夹都上满子弹 for bulletBox in per.bulletBoxList: per.reloadBullet(bulletBox, bulletBox.count) #找一个弹夹上到枪中 bulletBox = per.bulletBoxList[0] per.upBulletBox(bulletBox) per.fire() per.fire() per.fire() per.fire() per.fire() per.fire() per.fire() per.fire() #没子弹,卸载弹夹 bulletBox = per.downBulletBox() #给这个单击在填满子弹 per.reloadBullet(bulletBox, bulletBox.count) # 找一个弹夹上到枪中 bulletBox = per.bulletBoxList[2] per.upBulletBox(bulletBox) print("-------") per.fire() if __name__ == "__main__": main()
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