refactor(spatial): store weak reference to parent node

src/nodes/spatial.rs

@@ -4,12 +4,12 @@ use anyhow::Result;
 use vek::mat::repr_c::row_major::Mat4;
 
 pub struct Spatial<'a> {
-	node: &'a Node<'a>,
+	node: NodeRef<'a>,
 	transform: Mat4<f32>,
 }
 
 impl<'a> Spatial<'a> {
-	pub fn new(node: &'a Node<'a>, transform: Mat4<f32>) -> Self {
+	pub fn new(node: NodeRef<'a>, transform: Mat4<f32>) -> Self {
 		Spatial { node, transform }
 	}
 
@@ -18,8 +18,8 @@ impl<'a> Spatial<'a> {
 		path: &str,
 		transform: Mat4<f32>,
 	) -> Result<NodeRef<'a>> {
-		let node = Node::from_path(client, path)?;
-		node.upgrade().unwrap().borrow_mut().spatial = Some(Spatial::new(transform));
-		Ok(node)
+		Node::from_path(client, path, move |node| {
+			NodeData::Spatial(Spatial::new(node, transform))
+		})
 	}
 }