save project

snake.py

@@ -47,10 +47,11 @@ while True:
     else: 
         y+=30                                               
     pusition.append((x,y))
-    pusition.pop(0) 
     if x==apple_x and y==apple_y:
-        apple_x=randint(0,660)
-        apple_y=randint(0,480)
+        apple_x=randint(1,22)*30-30
+        apple_y=randint(1,16)*30-30
+    else:
+        pusition.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去