title: How to list my Walls [Screeps]
body: <p>When I build a new wall using <code>Creep.build()</code>, it creates wall with 1 hit point. Now I am trying to create a creep which repairs these newly constructed walls. But I am not able to figure a good way to list and iterate on these wall objects.</p>
  
  <p><code>Game.structures</code> doesn't contain these since walls doesn't belong to a player. The only approach I could find was <code>Game.getObjectById(objectId)</code> where id is copy pasted from my game' ui
  (right panel).</p>