auto save

snake.py

@@ -57,7 +57,7 @@ while True:
     position.append((x, y))
     position.pop(0)
 
-    if x == apple_x and y == apple_y:
+    if x == (apple_x*30) and y == (apple_y*30):
         apple_x = random.randint(0,22)
         apple_y = random.randint(0,16)
     # 将背景图画上去