save project

snake.py

@@ -30,7 +30,7 @@ snake_head = right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
-            # 接收到退出事件后退出程序
+            # 接收到退出事件后退出程序\
             exit()
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != "left":
@@ -56,10 +56,11 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
     if apple_x == x and apple_y == y:
-        apple_x = random.randint(0,660)
-        apple_y = random.randint(0,480)
+        apple_x = random.randint(1,22)*30-30
+        apple_y = random.randint(1,16)*30-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去