Simplify BVH joints representation

studio/src/bvh/mod.rs

@@ -1,4 +1,4 @@
-use bevy::{prelude::*, utils::HashMap};
+use bevy::prelude::*;
 
 mod error;
 mod loader;
@@ -17,13 +17,14 @@ impl Plugin for BvhPlugin {
 
 #[derive(Asset, TypePath, Debug)]
 pub struct Bvh {
-    pub joints: Vec<Handle<BvhJoint>>,
-    pub named_joints: HashMap<String, Handle<BvhJoint>>,
+    pub joints: Vec<BvhJoint>,
 }
 
 #[derive(Asset, TypePath, Debug, Clone)]
 pub struct BvhJoint {
-    pub parent: Option<Handle<BvhJoint>>,
+    pub name: String,
     /// Local transform
     pub transform: Transform,
+    /// Direct children of this joint
+    pub children: Vec<BvhJoint>,
 }