title: Accessing Node of Scene in Engine Source, where can this happen?
body: <p>Say we have a scene that starts with a spatial node named <code>Node_of_interest</code> with a child <code>Mesh_of_interest</code>, is there somewhere in the source code where we can access these nodes?</p>
  <p>I assumed the SceneTree would be the right place to start since it has <a href="https://github.com/godotengine/godot/blob/c02325ffda2258172385e70e160cd476fb19a004/scene/main/scene_tree.h#L169" rel="nofollow noreferrer"><code>Node * current_scene</code></a> , but when I step through in the debugger on a breakpoint <a href="https://github.com/godotengine/godot/blob/c02325ffda2258172385e70e160cd476fb19a004/scene/main/scene_tree.cpp#L483" rel="nofollow noreferrer">here</a>
  I never see <code>current_scene</code> as not null.</p>
  <p>I feel like with this information I'll have a much better handle on how the nodes relate to servers and drivers.</p>
  <p><a href="https://i.stack.imgur.com/RzBV5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RzBV5.png" alt="enter image description here" /></a></p>
  <p>Here's the scene that I'm trying this on.
  <a href="https://i.stack.imgur.com/8MsRH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8MsRH.png" alt="enter image description here" /></a></p>