Improved 3D Scene Importer

* Added option for importers to show an Advanced settings dialog
* Created advanced settings dialog for Scene Importer
* Cleaned up importers (remove many old/unused options)
* Added the ability to customize every node, material, mesh and animation individually
* Saving to animations and meshes to files is now a manual process, making it more predictable
* Added the ability for materials to be replaced by external files (or to be made external, up to you).
* When doubleclicking an impoted scene in the filesystem dock, it automatically shows the import settings instead of asking to open it.

WARNING: Lightmap UV unwrap is not working, it needs to be re-made.

1 files changed, 2 insertions, 0 deletions

diff --git a/editor/editor_node.h b/editor/editor_node.h
index 91d873d16f..7e16936f5d 100644
--- a/editor/editor_node.h
+++ b/editor/editor_node.h
@@ -88,6 +88,7 @@ class Button;
 class VSplitContainer;
 class Window;
 class SubViewport;
+class SceneImportSettings;
 
 class EditorNode : public Node {
 	GDCLASS(EditorNode, Node);
@@ -410,6 +411,7 @@ private:
 	EditorResourcePreview *resource_preview;
 	EditorFolding editor_folding;
 
+	SceneImportSettings *scene_import_settings;
 	struct BottomPanelItem {
 		String name;
 		Control *control = nullptr;