day31 类的组合及继承，文件目录规范

Python之路，Day18 = Python基础18-面向对象继承与组合

类的继承

 def talk():
     print("I am come from talk..a")

 class Animal:
     def say(self):
         print("say")

 class Person(object):
     def __init__(self, name, age):
         self.name = name
         self.age = age

     def walk(self):
         print("%s is walking..."%self.name)

 class Teacher(Person):
     def say(self):
         Animal.say(123)
     pass

 class Student(Person):
     def __init__(self, name, age, tuition):
         Person.__init__(self, name, age)
         self.tuition = tuition

     def walk(self):
         Person.walk(self)
         print("I am come from Student...")

     def talk(self):
         talk()                     # 对象可以调用外面的函数

 t = Teacher('zhang', 18)
 print(t.name, t.age)
 t.walk()
 t.say()

 s = Student('liu', 17, 19800)
 print(s.name, s.age)
 s.walk()
 print(s.tuition)

 s.talk()

类的组合

 class BirthDay(object):
     def __init__(self, year, mon, day):
         self.year = year
         self.mon = mon
         self.day = day

     def tellInfo(self):
         print("comes from BirthDay")
         return "year:%s  mon:%s  day:%s"%(self.year, self.mon, self.day)

 class Teacher(object):
     def __init__(self, name, age, sex, birth):
         self.name = name
         self.age = age
         self.sex =sex
         self.birth = birth

 t = Teacher('zhang', 18, 'male', BirthDay(1999, 9, 99))

 print(t.birth.tellInfo())

文件目录规范

飞机大战的例子

 import time
 import pygame
 from sys import exit

 def main():

     screen = pygame.display.set_mode((512, 768), 0, 32)
     pygame.display.set_caption("飞机大战之类的练习")
     pygame.mouse.set_visible(False)
     background = pygame.image.load(r".\img\background.jpg")
     hero_plan_len = 151
     hero_plan_hig = 108

     hero_plan = HeroPlan(screen, hero_plan_len, hero_plan_hig)
     enemy_plan = EnemyPlan(screen)

     while True:
         screen.blit(background, (0,0))

         hero_plan.display()
         get_input(hero_plan)

         enemy_plan.display()

         pygame.display.update()

         time.sleep(0.03)

 class BasePlan:
     def __init__(self, screen, x, y):
         self.screen = screen
         self.x = x
         self.y = y
         self.buttle = []
         self.count = 0

     def display(self):
         self.move()
         self.screen.blit(self.plan, (self.x, self.y))
         self.fire()

         for buttle in self.buttle:
             if buttle.clearButtle():
                 self.buttle.remove(buttle)

             buttle.move()
             buttle.display()

     def move(self):
         pass

 class HeroPlan(BasePlan):
     def __init__(self, screen, lenth, high):
         super().__init__(screen, 180, 640)
         self.lenth = lenth
         self.high = high
         self.plan = pygame.image.load(r".\img\hero_plan.png")

     def fire(self):
         if self.count == 2:
             self.buttle.append(HeroBullet(self.screen, self.x + 20, self.y - 48))
             self.buttle.append(HeroBullet(self.screen, self.x + 105, self.y - 48))
             self.count = 0
         else:
             self.count += 1

 class EnemyPlan(BasePlan):
     def __init__(self, screen):
         super().__init__(screen, 0, 0)
         self.direction = "right"
         self.plan = pygame.image.load(r".\img\enemy_plan.png")

     def move(self):
         if self.direction == "right":
             self.x += 10
         elif self.direction == 'left':
             self.x -= 10

         if self.x <= 0:
             self.direction = "right"
         elif self.x >= 248:
             self.direction = "left"

     def fire(self):
         if self.count == 20:
             self.buttle.append(EnemyButtle(self.screen, self.x+40, self.y+160))
             self.buttle.append(EnemyButtle(self.screen, self.x+175, self.y+160))
             self.count = 0
         else:
             self.count += 1

 class BaseBullet:
     def __init__(self, screen, x, y):
         self.screen = screen
         self.x = x
         self.y = y

     def display(self):
         self.screen.blit(self.buttle, (self.x, self.y))

 class HeroBullet(BaseBullet):
     def __init__(self, screen, x, y):
         super().__init__(screen, x, y)
         self.buttle = pygame.image.load(r".\img\hero_bullet.png")

     def move(self):
         self.y -= 20

     def clearButtle(self):
         if self.y < 0:
             return True

 class EnemyButtle(BaseBullet):
     def __init__(self, screen, x, y):
         super().__init__(screen, x, y)
         self.buttle = pygame.image.load(r".\img\enemy_bullet.png")

     def move(self):
         self.y += 10

     def clearButtle(self):
         if self.y > 714:
             return True

 def get_input(hero_plan):
     for event in pygame.event.get():
         if event.type == pygame.QUIT:
             exit()

     x, y = pygame.mouse.get_pos()
     hero_plan.x = x - hero_plan.lenth/2
     hero_plan.y = y - hero_plan.high/2

 def key_control(hero_temp):

     #获取事件，比如按键等
     for event in pygame.event.get():

         #判断是否是点击了退出按钮
         if event.type == QUIT:
             print("exit")
             exit()
         #判断是否是按下了键
         elif event.type == KEYDOWN:
             #检测按键是否是a或者left
             if event.key == K_a or event.key == K_LEFT:
                 print('left')
                 hero_temp.move_left()
             #检测按键是否是d或者right
             elif event.key == K_d or event.key == K_RIGHT:
                 print('right')
                 hero_temp.move_right()
             #检测按键是否是空格键
             elif event.key == K_SPACE:
                 print('space')
                 hero_temp.fire()

 if __name__ == "__main__":
     main()