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snake.py

@@ -52,13 +52,14 @@ while True:
         y -= 30
     else:
         y += 30
-    if x==ax and y==ay:
+     if x==ax and y==ay:
         sx=random.randint(1,22)
         sy=random.randint(1,16)
         ax=sx*30-30
         ay=sy*30-30
     else:
         position.pop(0)
+    position.append((x, y))
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去