save project

snake.py

@@ -12,12 +12,20 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-
 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()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_DOWN and setheading!=up:
+                setheading='down'
+            if event.key==locals.K_UP and setheading!=down:
+                setheading='up'
+            if event.key==locals.K_LEFT and setheading!=right:
+                setheading='left'
+            if event.key==locals.K_RIGHT and setheading!=left:
+                setheading='right'
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
@@ -29,4 +37,4 @@ while True:
     # 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()