Utilities to work with the node tree

[Bromeon]

Similar to the old NodeResolveExt, utility methods would allow more idiomatic access to the scene tree.
Those could be provided as an extension trait or in a dedicated module/struct.

Examples:

• get_node<T>
• find_node<T> (optional) -- implemented as try_get_node
• load<T>
• PackedScene::instance<T>

[HenryWConklin]

Seems like get_node and load are implemented.

gdext/godot-core/src/engine.rs

Lines 25 to 46 in 08c6594

	fn get_node_as<T>(&self, path: impl Into<NodePath>) -> Gd<T>
	where
	T: GodotClass + Inherits<Node>,
	{
	let path = path.into();
	let copy = path.clone(); // TODO avoid copy
	self.try_get_node_as(path).unwrap_or_else(|| {
	panic!(
	"There is no node of type {ty} path `{copy}`",
	ty = T::CLASS_NAME
	)
	})
	}
	/// Retrieves the node at path `path` (fallible).
	///
	/// If the node is not found, or if it does not have type `T` or inherited,
	/// `None` will be returned.
	fn try_get_node_as<T>(&self, path: impl Into<NodePath>) -> Option<Gd<T>>
	where
	T: GodotClass + Inherits<Node>;

Is PackedScene::instance<T> the only item left on this?

[Bromeon]

There might be other similar methods 🙂

[Cankyre]

Hoi, is this up-to-date? I can work on some of the features.

[Bromeon]

#299 implemented instantiate_as, so it's complete.

I'll close this, if you have other good examples, let me know. But don't find some just for the sake of it, it should be common operations 😉