save project

snake.py

@@ -66,8 +66,8 @@ while True:
     # 将果实画上去
     screen.blit(food, (a_x, a_y))
     if a_x==x and a_y==y:
-        a_x=random.randint(30,660)
-        a_y=random.randint(0,480)
+        a_x=30*random.randint(0,21)
+        a_y=30*random.randint(0,15)
 
     # 刷新画面
     pygame.display.update()