auto save

snake.py

@@ -23,6 +23,7 @@ x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 setheading = "right"
+snake_head = right
 
 while True:
     for event in pygame.event.get():
@@ -68,7 +69,6 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
-
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面