auto save

snake.py

@@ -81,7 +81,7 @@ while True:
     screen.blit(text,(300,0))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
+    FPSCLOCK.tick(8)
     if x<0 or x>630 or y<0 or y>450:
         exit()