save project

snake.py

@@ -53,10 +53,11 @@ while True:
         y -= 30
         y -= 30
     else:
     else:
         y += 30
         y += 30
-    position.append((x, y))
     if  x == apple_x and y == apple_y:
     if  x == apple_x and y == apple_y:
         apple_x = random.randint(0,660)
         apple_x = random.randint(0,660)
         apple_y = random.randint(0,480)
         apple_y = random.randint(0,480)
+    position.append((x, y))
+
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))