使用pygame模块编写贪吃蛇的实例讲解-创新互联

python ### 刚学了python不久，发现了一个好玩的库pygame

使用pygame模块 利用面向对象的思想编写贪吃蛇，主要用到pygame.sprite：

游戏主类

import pygame,sys
from snake_sprite import Game_sprite,Snake,Food
SCREEN_RECT=pygame.Rect(0,0,828,600)

IMG_URL="./image/bg.jpg"
#主类
class Snakegame(object):
 def __init__(self):
  self.screen=pygame.display.set_mode(SCREEN_RECT.size)
  self.clock=pygame.time.Clock()
  self.__create_sprites()

 def __create_sprites(self):
  bg=Game_sprite(IMG_URL)
  self.snake=Snake()
  for pos in self.snake.snake_point:
   self.screen.blit(self.snake.image,pos)
  food=Food()
  self.bg_group=pygame.sprite.Group(bg)
  self.snake_group=pygame.sprite.Group(self.snake)
  self.food_group = pygame.sprite.Group(food)
 def start_game(self):
  while True:
   #1.时钟设置
   self.clock.tick(30)
   #2.事件监听
   self.__event_handler()
   #3.碰撞检测
   self.__check_collide()
   #4.精灵更新
   self.__update_sprites()
   #5.屏幕更新
   pygame.display.update()
 def __event_handler(self):
  for event in pygame.event.get():
   if event.type==pygame.QUIT:
    Snakegame.__game_over()
   elif event.type == pygame.KEYDOWN and event.key == pygame.K_RIGHT and \
     self.snake.direction !='L':
    self.snake.speedy = 0
    self.snake.speedx = 1
    self.snake.direction = 'R'
   elif event.type == pygame.KEYDOWN and event.key == pygame.K_LEFT and \
     self.snake.direction !='R':
    self.snake.speedy = 0
    self.snake.speedx = -1
    self.snake.direction = 'L'
   elif event.type == pygame.KEYDOWN and event.key == pygame.K_UP and \
     self.snake.direction !='D':
    self.snake.speedx = 0
    self.snake.speedy = -1
    self.snake.direction = 'U'
   elif event.type == pygame.KEYDOWN and event.key == pygame.K_DOWN and \
     self.snake.direction !='U':
    self.snake.speedx=0
    self.snake.speedy=1
    self.snake.direction='D'
 def __check_collide(self):
  pass
 def __update_sprites(self):
  self.bg_group.update()
  self.bg_group.draw(self.screen)
  self.snake_group.update()
  self.snake_group.draw(self.screen)
  self.food_group.update()
  self.food_group.draw(self.screen)
 @staticmethod
 def __game_over():
  pygame.quit()
  exit()

#游戏启动
if __name__ == '__main__':
 snake=Snakegame()
 snake.start_game()

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