Method _generate_skeleton_bone_node

modules/fbx/fbx_document.cpp:1679–1766

}

void FBXDocument::_generate_skeleton_bone_node(Ref<FBXState> p_state, const GLTFNodeIndex p_node_index, Node *p_scene_parent, Node *p_scene_root) {
	Ref<GLTFNode> fbx_node = p_state->nodes[p_node_index];

	Node3D *current_node = nullptr;

	Skeleton3D *skeleton = p_state->skeletons[fbx_node->skeleton]->godot_skeleton;
	// In this case, this node is already a bone in skeleton.
	const bool is_skinned_mesh = (fbx_node->skin >= 0 && fbx_node->mesh >= 0);
	const bool requires_extra_node = (fbx_node->mesh >= 0 || fbx_node->camera >= 0 || fbx_node->light >= 0);

	Skeleton3D *active_skeleton = Object::cast_to<Skeleton3D>(p_scene_parent);
	if (active_skeleton != skeleton) {
		if (active_skeleton) {
			// Should no longer be possible.
			ERR_PRINT(vformat("FBX: Generating scene detected direct parented Skeletons at node %d", p_node_index));
			BoneAttachment3D *bone_attachment = _generate_bone_attachment(p_state, active_skeleton, p_node_index, fbx_node->parent);
			p_scene_parent->add_child(bone_attachment, true);
			bone_attachment->set_owner(p_scene_root);
			// There is no fbx_node that represent this, so just directly create a unique name
			bone_attachment->set_name(_gen_unique_name(p_state->unique_names, "BoneAttachment3D"));
			// We change the scene_parent to our bone attachment now. We do not set current_node because we want to make the node
			// and attach it to the bone_attachment
			p_scene_parent = bone_attachment;
		}
		if (skeleton->get_parent() == nullptr) {
			p_scene_parent->add_child(skeleton, true);
			skeleton->set_owner(p_scene_root);
		}
	}

	active_skeleton = skeleton;
	current_node = active_skeleton;
	if (active_skeleton) {
		p_scene_parent = active_skeleton;
	}

	if (requires_extra_node) {
		current_node = nullptr;
		// skinned meshes must not be placed in a bone attachment.
		if (!is_skinned_mesh) {
			// Bone Attachment - Same Node Case
			BoneAttachment3D *bone_attachment = _generate_bone_attachment(p_state, active_skeleton, p_node_index, p_node_index);

			p_scene_parent->add_child(bone_attachment, true);
			bone_attachment->set_owner(p_scene_root);

			// There is no fbx_node that represent this, so just directly create a unique name
			bone_attachment->set_name(fbx_node->get_name());

			// We change the scene_parent to our bone attachment now. We do not set current_node because we want to make the node
			// and attach it to the bone_attachment
			p_scene_parent = bone_attachment;
		}
		/// @todo: 20240118 // fire
		/// // Check if any GLTFDocumentExtension classes want to generate a node for us.
		// for (Ref<GLTFDocumentExtension> ext : document_extensions) {
		// 	ERR_CONTINUE(ext.is_null());
		// 	current_node = ext->generate_scene_node(p_state, fbx_node, p_scene_parent);