auto save

snake.py

@@ -44,19 +44,15 @@ while True:
             if event.key==locals.K_DOWN and setheading!='up':
                 setheading='down'
                 snake_head=down
-    if snake_head=='right':
+    if setheading=='right':
         x+=30
-    elif snake_head=='left':
+    elif setheading=='left':
         x-=30
-    elif snake_head=='up':
+    elif setheading=='up':
         y-=30
     else:
         y+=30
 
-
-
-
-    
     ponsition.append((x,y))
     ponsition.pop(0)
     # 将背景图画上去
@@ -74,4 +70,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCOLCK.tick(3)
\ No newline at end of file
+    FPSCOLCK.tick(8)
\ No newline at end of file