save project

snake.py

 import pygame
 from pygame import locals
 
-# 初始化pygame，为使用pygame做准备
+# 初始化pygame，为使用硬件做准备
 pygame.init()
 
+# 创建一个窗口
+screen = pygame.display.set_mode((660, 480))
+FPSCLOCK = pygame.time.Clock()#pygame,时钟，控制游戏速度
+
+# 背景
 background = pygame.image.load('bg.png')
-food = pygame.image.load('apple.png')
 right = pygame.image.load('right.png')
+food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
-# 创建一个窗口
-screen = pygame.display.set_mode((660,480))
+x,y=240,120
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
+            # 接收到退出事件后退出程序
             exit()
-    screen.blit(background,(0,0))
-    screen.blit(right,(240,120))
-    screen.blit(food,(360,300))
-    screen.blit(body,(210,120))
-    screen.blit(body,(180,120))
-    screen.blit(body,(180,90))
+    x+=30
+    # 将背景图画上去
+    screen.blit(background, (0, 0))
+    # 将贪吃蛇画上去
+    screen.blit(right, (x, y))
+    # 将贪吃蛇的身体画上去
+    screen.blit(body, (210, 120))
+    screen.blit(body, (180, 120))
+    screen.blit(body, (180, 90))
+    # 将果实画上去
+    screen.blit(food, (360, 300))
+    # 刷新画面
     pygame.display.update()
+    FPSCLOCK.tick(3) 
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