save project

snake.py

@@ -6,6 +6,7 @@ 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（帧数）
 
 # 背景
 background = pygame.image.load('bg.png')
@@ -13,20 +14,25 @@ right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
+x,y=240,120 #初始化头的位置
+
 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()
+    x+=3
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (240, 120))
+    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()
\ No newline at end of file
+    pygame.display.update()
+    FPSCLOCK.tick(3) #设置帧数为3
\ No newline at end of file