From a73e80b5316c631486daf206b33f34d8962e4acd Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Tue, 10 Oct 2023 18:32:30 -0400
Subject: [PATCH] mdlpart: Improve exported GLTF hierarchy a bit

---
 parts/mdl/mdlpart.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/parts/mdl/mdlpart.cpp b/parts/mdl/mdlpart.cpp
index 2e50d3b..603c953 100644
--- a/parts/mdl/mdlpart.cpp
+++ b/parts/mdl/mdlpart.cpp
@@ -232,6 +232,7 @@ void MDLPart::exportModel(const QString& fileName) {
 
     auto& gltfSkin = gltfModel.skins.emplace_back();
     gltfSkin.name = gltfSkeletonNode.name;
+    gltfSkin.skeleton = 0;
     for (int i = 1; i < gltfModel.nodes.size(); i++) {
         gltfSkin.joints.push_back(i);
     }
@@ -273,6 +274,8 @@ void MDLPart::exportModel(const QString& fileName) {
         gltfNode.name = models[0].name.toStdString() + " Part " + std::to_string(i) + ".0";
         gltfNode.skin = 0;
 
+        gltfSkeletonNode.children.push_back(gltfModel.nodes.size());
+
         gltfNode.mesh = gltfModel.meshes.size();
         auto& gltfMesh = gltfModel.meshes.emplace_back();
 
@@ -356,6 +359,10 @@ void MDLPart::exportModel(const QString& fileName) {
         }
     }
 
+    auto &scene = gltfModel.scenes.emplace_back();
+    scene.name = models[0].name.toStdString();
+    scene.nodes = {0};
+
     tinygltf::TinyGLTF loader;
     loader.WriteGltfSceneToFile(&gltfModel, fileName.toStdString(), true, true, false, true);
 }