pygame中多个class类之间的关系

用一个实例介绍一下有关pygame中不同类之间的通信，
详细介绍在代码段有标注，感兴趣的可以复制代码试试：

 import pygame
 import sys
 # -------------------------围墙堆叠---------------------------
 brickImage =r"../image/brick.png"
 ironImage = r"../image/iron.png"

 pygame.init()
 screen=pygame.display.set_mode([800,600])
 # 砖块类
 class Brick(pygame.sprite.Sprite):
     def __init__(self):
         pygame.sprite.Sprite.__init__(self)
         self.image=pygame.image.load(brickImage)
         self.rect=self.image.get_rect()

 #         铁块类
 class Iron(pygame.sprite.Sprite):
     def __init__(self):
         pygame.sprite.Sprite.__init__(self)
         self.image=pygame.image.load(ironImage)
         self.rect=self.image.get_rect()

 class Map():
   def __init__(self):
       # 初始化砖块群组
       self.brickGroup=pygame.sprite.Group()
       # 初始化铁块群组
       self.ironGroup=pygame.sprite.Group()
       # 数字代表地图中的位置
       # 画砖块
       X1379 = [2, 3, 6, 7, 18, 19, 22, 23]
       Y1379 = [2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 20, 21, 22, 23]

       X28 = [10, 11, 14, 15]
       Y28 = [2, 3, 4, 5, 6, 7, 8, 11, 12, 15, 16, 17, 18, 19, 20]

       X46 = [4, 5, 6, 7, 18, 19, 20, 21]
       Y46 = [13, 14]

       X5 = [12, 13]
       Y5 = [16, 17]
       X0Y0 = [(11, 23), (12, 23), (13, 23), (14, 23), (11, 24), (14, 24), (11, 25), (14, 25)]
       for x in X1379:
           for y in Y1379:
               # 实例化砖块类对象
               self.brick=Brick()
               # 生砖块的位置
               self.brick.rect.left,self.brick.rect.top=3+x*24,3+y*24

                   每循环一次自动将动画添加到精灵组（下同）
               self.brickGroup.add(self.brick)
       for x in X28:
           for y in Y28:
               self.brick=Brick()
               self.brick.rect.left,self.brick.rect.top=3+x*24,3+y*24
               self.brickGroup.add(self.brick)
       for x in X46:
           for y in Y46:
               self.brick=Brick()
               self.brick.rect.left,self.brick.rect.top=3+x*24,3+y*24
               self.brickGroup.add(self.brick)
       for x in X5:
           for y in Y5:
               self.brick=Brick()
               self.brick.rect.left,self.brick.rect.top=3+x*24,3+y*24
               self.brickGroup.add(self.brick)
       # for item in X0Y0:
       for x,y in X0Y0:
           self.brick=Brick()
           # self.brick.rect.left,self.brick.rect.top=3+item[0]*24,3+item[1]*24
           self.brick.rect.left, self.brick.rect.top = 3 + x * 24, 3 + y * 24
           self.brickGroup.add(self.brick)
       for x, y in [(0, 14), (1, 14), (12, 6), (13, 6), (12, 7), (13, 7), (24, 14), (25, 14)]:
           self.iron=Iron()
           self.iron.rect.left,self.iron.rect.top=3+x*24,3+y*24
           self.ironGroup.add(self.iron)

       while True:
           for event in pygame.event.get():
               if event.type == pygame.QUIT:
                   pygame.quit()
                   sys.exit()
           self.brickGroup.update()
           self.ironGroup.update()
           self.brickGroup.draw(screen)
           self.ironGroup.draw(screen)
           pygame.display.update()

 Map()
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