auto save

snake.py

@@ -59,9 +59,11 @@ while True:
         b=random.randint(0,16)
         apple_x=a*30-30
         apple_y=b*30-30
+        score+=10
     else:
         position.pop(0)
-
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -75,6 +77,8 @@ while True:
     info="Score:"+str(score)
     text=my_font.render(info,True,(0,0,0))
     screen.blit(text,(540,10))
+    if x<0 or x>630 or y<0 or y>630:
+        exit()
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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