feat(gltf_auto_export): component filtering for exports, bug-fixes and tests(#143)

* added filtering out of invalid components/ custom properties:
  * includes filtering out of invalid / disabled components as defined in bevy_components, components_meta etc
 * completely changed handling of "unique" (non blueprint) objects by copying them instead of moving/renaming them & manipulating their custom properties : much cleaner, much simpler !
 * disabled default gltf export of optimised animations
 * added tests !
 * closes #139 
 * closes #141 
 * closes #142 
 * closes #146

Cargo.toml

@@ -16,7 +16,9 @@ members = [
     "examples/bevy_gltf_save_load/basic/",
     "examples/bevy_registry_export/basic",
 
-    "testing/bevy_registry_export/basic"
+    "testing/bevy_registry_export/basic",
+    "testing/bevy_example"
+
 ]
 resolver = "2"
 

testing/bevy_example/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "bevy_example"
+version = "0.3.0"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+bevy="0.12"
+bevy_gltf_blueprints = { path = "../../crates/bevy_gltf_blueprints" }
+bevy_registry_export = { path = "../../crates/bevy_registry_export" }
+bevy_gltf_worlflow_examples_common = { path = "../../examples/common" }
+
+bevy_rapier3d = { version = "0.23.0", features = [ "serde-serialize", "debug-render-3d", "enhanced-determinism"] }
+bevy_asset_loader = { version = "0.18", features = ["standard_dynamic_assets" ]} 
+bevy_editor_pls = { version = "0.6" }
+rand = "0.8.5"

testing/bevy_example/README.md

@@ -0,0 +1,15 @@
+# Bevy registry export example/demo
+
+This example showcases 
+* the use of the bevy_registry_export crate to extract all components & types information into a json file.
+* That file is then used by the [Blender addon](https://github.com/kaosat-dev/Blender_bevy_components_workflow/tree/main/tools/bevy_components) to create Uis for each component,
+to be able to add & edit Bevy components easilly in Blender !
+
+
+## Running this example
+
+```
+cargo run --features bevy/dynamic_linking
+```
+
+Running the example also regenerates the registry.json file.

testing/bevy_example/assets/assets_core.assets.ron

@@ -0,0 +1 @@
+({})

testing/bevy_example/assets/assets_game.assets.ron

@@ -0,0 +1,6 @@
+({
+    "world":File (path: "models/World.glb"),
+    "models": Folder (
+        path: "models/library",
+    ),
+})

testing/bevy_example/src/core/mod.rs

@@ -0,0 +1,22 @@
+use bevy::prelude::*;
+use bevy_gltf_blueprints::*;
+use bevy_registry_export::*;
+
+pub struct CorePlugin;
+impl Plugin for CorePlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugins((
+            ExportRegistryPlugin {
+                save_path: "assets/registry.json".into(),
+                ..Default::default()
+            },
+            BlueprintsPlugin {
+                legacy_mode: false,
+                library_folder: "models/library".into(),
+                format: GltfFormat::GLB,
+                aabbs: true,
+                ..Default::default()
+            },
+        ));
+    }
+}

testing/bevy_example/src/game/in_game.rs

@@ -0,0 +1,84 @@
+use bevy::prelude::*;
+use bevy_gltf_blueprints::{BluePrintBundle, BlueprintName, GameWorldTag};
+use bevy_gltf_worlflow_examples_common::{assets::GameAssets, GameState, InAppRunning};
+
+use bevy_rapier3d::prelude::Velocity;
+use rand::Rng;
+
+pub fn setup_game(
+    mut commands: Commands,
+    game_assets: Res<GameAssets>,
+    models: Res<Assets<bevy::gltf::Gltf>>,
+    mut next_game_state: ResMut<NextState<GameState>>,
+) {
+    println!("setting up all stuff");
+    commands.insert_resource(AmbientLight {
+        color: Color::WHITE,
+        brightness: 0.2,
+    });
+    // here we actually spawn our game world/level
+
+    commands.spawn((
+        SceneBundle {
+            // note: because of this issue https://github.com/bevyengine/bevy/issues/10436, "world" is now a gltf file instead of a scene
+            scene: models
+                .get(game_assets.world.id())
+                .expect("main level should have been loaded")
+                .scenes[0]
+                .clone(),
+            ..default()
+        },
+        bevy::prelude::Name::from("world"),
+        GameWorldTag,
+        InAppRunning,
+    ));
+
+    next_game_state.set(GameState::InGame)
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct UnregisteredComponent;
+
+pub fn spawn_test(
+    keycode: Res<Input<KeyCode>>,
+    mut commands: Commands,
+
+    mut game_world: Query<(Entity, &Children), With<GameWorldTag>>,
+) {
+    if keycode.just_pressed(KeyCode::T) {
+        let world = game_world.single_mut();
+        let world = world.1[0];
+
+        let mut rng = rand::thread_rng();
+        let range = 5.5;
+        let x: f32 = rng.gen_range(-range..range);
+        let y: f32 = rng.gen_range(-range..range);
+
+        let mut rng = rand::thread_rng();
+        let range = 0.8;
+        let vel_x: f32 = rng.gen_range(-range..range);
+        let vel_y: f32 = rng.gen_range(2.0..2.5);
+        let vel_z: f32 = rng.gen_range(-range..range);
+
+        let name_index: u64 = rng.gen();
+
+        let new_entity = commands
+            .spawn((
+                BluePrintBundle {
+                    blueprint: BlueprintName("Health_Pickup".to_string()),
+                    ..Default::default()
+                },
+                bevy::prelude::Name::from(format!("test{}", name_index)),
+                // BlueprintName("Health_Pickup".to_string()),
+                // SpawnHere,
+                TransformBundle::from_transform(Transform::from_xyz(x, 2.0, y)),
+                Velocity {
+                    linvel: Vec3::new(vel_x, vel_y, vel_z),
+                    angvel: Vec3::new(0.0, 0.0, 0.0),
+                },
+            ))
+            .id();
+        commands.entity(world).add_child(new_entity);
+    }
+}

testing/bevy_example/src/game/mod.rs

@@ -0,0 +1,28 @@
+pub mod in_game;
+use std::time::Duration;
+
+pub use in_game::*;
+
+use bevy::{prelude::*, time::common_conditions::on_timer};
+use bevy_gltf_worlflow_examples_common::{AppState, GameState};
+
+fn start_game(mut next_app_state: ResMut<NextState<AppState>>) {
+    next_app_state.set(AppState::AppLoading);
+}
+
+fn exit_game(mut app_exit_events: ResMut<Events<bevy::app::AppExit>>) {
+    app_exit_events.send(bevy::app::AppExit);
+}
+
+pub struct GamePlugin;
+impl Plugin for GamePlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Update, (spawn_test).run_if(in_state(GameState::InGame)))
+            .add_systems(OnEnter(AppState::MenuRunning), start_game)
+            .add_systems(
+                Update,
+                exit_game.run_if(on_timer(Duration::from_secs_f32(0.5))),
+            ) // shut down the app after this time
+            .add_systems(OnEnter(AppState::AppRunning), setup_game);
+    }
+}

testing/bevy_example/src/main.rs

@@ -0,0 +1,27 @@
+use bevy::prelude::*;
+use bevy_editor_pls::prelude::*;
+use bevy_gltf_worlflow_examples_common::CommonPlugin;
+
+mod core;
+use crate::core::*;
+
+mod game;
+use game::*;
+
+mod test_components;
+use test_components::*;
+
+fn main() {
+    App::new()
+        .add_plugins((
+            DefaultPlugins.set(AssetPlugin::default()),
+            // editor
+            EditorPlugin::default(),
+            // our custom plugins
+            CommonPlugin,
+            CorePlugin,           // reusable plugins
+            GamePlugin,           // specific to our game
+            ComponentsTestPlugin, // Showcases different type of components /structs
+        ))
+        .run();
+}

testing/bevy_example/src/test_components.rs

@@ -0,0 +1,190 @@
+use bevy::{
+    pbr::{ExtendedMaterial, MaterialExtension},
+    prelude::*,
+    render::render_resource::*,
+};
+use std::ops::Range;
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct UnitTest;
+
+#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
+#[reflect(Component)]
+struct TupleTestF32(f32);
+
+#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
+#[reflect(Component)]
+struct TupleTestU64(u64);
+
+#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
+#[reflect(Component)]
+pub struct TupleTestStr(String);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleTest2(f32, u64, String);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleTestBool(bool);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleVec2(Vec2);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleVec3(Vec3);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleVec(Vec<String>);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleVecF32F32(Vec<(f32, f32)>);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+struct TupleTestColor(Color);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct BasicTest {
+    a: f32,
+    b: u64,
+    c: String,
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub enum EnumTest {
+    Metal,
+    Wood,
+    Rock,
+    Cloth,
+    Squishy,
+    #[default]
+    None,
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct NestingTestLevel2 {
+    text: String,
+    enable: bool,
+    enum_inner: EnumTest,
+    color: TupleTestColor,
+    toggle: TupleTestBool,
+    basic: BasicTest,
+    pub nested: NestingTestLevel3,
+    colors_list: VecOfColors,
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct NestingTestLevel3 {
+    vec: TupleVec3,
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct NestedTupleStuff(f32, u64, NestingTestLevel2);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub enum EnumComplex {
+    Float(f32),
+    Wood(String),
+    Vec(BasicTest),
+    SomeThing,
+    StructLike {
+        a: f32,
+        b: u32,
+        c: String,
+    },
+    #[default]
+    None,
+}
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct VecOfVec3s2(Vec<TupleVec3>);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct VecOfColors(Vec<Color>);
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct AAAAddedCOMPONENT;
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct AComponentWithAnExtremlyExageratedOrMaybeNotButCouldBeNameOrWut;
+
+/* fn toto(){
+   let bla:core::ops::Range<f32> = Range { start: 0.1, end: 5.0};
+} */
+
+#[derive(Component, Reflect, Default, Debug)]
+#[reflect(Component)]
+pub struct VecOfF32s(Vec<f32>);
+
+// test for extended materials
+#[derive(Asset, AsBindGroup, Reflect, Debug, Clone)]
+struct MyExtension {
+    // We need to ensure that the bindings of the base material and the extension do not conflict,
+    // so we start from binding slot 100, leaving slots 0-99 for the base material.
+    #[uniform(100)]
+    quantize_steps: u32,
+}
+
+impl MaterialExtension for MyExtension {
+    fn fragment_shader() -> ShaderRef {
+        "shaders/extended_material.wgsl".into()
+    }
+
+    fn deferred_fragment_shader() -> ShaderRef {
+        "shaders/extended_material.wgsl".into()
+    }
+}
+
+pub struct ComponentsTestPlugin;
+impl Plugin for ComponentsTestPlugin {
+    fn build(&self, app: &mut App) {
+        app.register_type::<BasicTest>()
+            .register_type::<UnitTest>()
+            .register_type::<TupleTestF32>()
+            .register_type::<TupleTestU64>()
+            .register_type::<TupleTestStr>()
+            .register_type::<TupleTestBool>()
+            .register_type::<TupleTest2>()
+            .register_type::<TupleVec2>()
+            .register_type::<TupleVec3>()
+            .register_type::<EnumTest>()
+            .register_type::<TupleTestColor>()
+            .register_type::<TupleVec>()
+            .register_type::<Vec<String>>()
+            .register_type::<NestingTestLevel2>()
+            .register_type::<NestingTestLevel3>()
+            .register_type::<NestedTupleStuff>()
+            .register_type::<EnumComplex>()
+            .register_type::<VecOfVec3s2>()
+            .register_type::<TupleVecF32F32>()
+            .register_type::<(f32, f32)>()
+            .register_type::<Vec<(f32, f32)>>()
+            .register_type::<Vec<TupleVec3>>()
+            .register_type::<Vec<Color>>()
+            .register_type::<VecOfColors>()
+            .register_type::<Range<f32>>()
+            .register_type::<VecOfF32s>()
+            .register_type::<Vec<f32>>()
+            // .register_type::<AAAAddedCOMPONENT>()
+            .register_type::<AComponentWithAnExtremlyExageratedOrMaybeNotButCouldBeNameOrWut>()
+            .add_plugins(MaterialPlugin::<
+                ExtendedMaterial<StandardMaterial, MyExtension>,
+            >::default());
+    }
+}

tools/gltf_auto_export/__init__.py

@@ -1,7 +1,7 @@
 bl_info = {
     "name": "gltf_auto_export",
     "author": "kaosigh",
-    "version": (0, 12, 1),
+    "version": (0, 13, 0),
     "blender": (3, 4, 0),
     "location": "File > Import-Export",
     "description": "glTF/glb auto-export",

tools/gltf_auto_export/auto_export/auto_export.py

@@ -21,6 +21,9 @@ def auto_export(changes_per_scene, changed_export_parameters, addon_prefs):
         folder_path = os.path.dirname(file_path)
         # get the preferences for our addon
 
+        #should we use change detection or not 
+        export_change_detection = getattr(addon_prefs, "export_change_detection")
+
         export_blueprints = getattr(addon_prefs,"export_blueprints")
         export_output_folder = getattr(addon_prefs,"export_output_folder")
 
@@ -75,7 +78,7 @@ def auto_export(changes_per_scene, changed_export_parameters, addon_prefs):
                         if matching_collection is not None:
                             changed_collections.append(matching_collection)
 
-            collections_to_export = list(set(changed_collections + collections_not_on_disk))
+            collections_to_export =  list(set(changed_collections + collections_not_on_disk)) if export_change_detection else collections
 
             # we need to re_export everything if the export parameters have been changed
             collections_to_export = collections if changed_export_parameters else collections_to_export
@@ -110,14 +113,14 @@ def auto_export(changes_per_scene, changed_export_parameters, addon_prefs):
             print("export MAIN scenes")
             for scene_name in main_scene_names:
                 # we have more relaxed rules to determine if the main scenes have changed : any change is ok, (allows easier handling of changes, render settings etc)
-                do_export_main_scene =  changed_export_parameters or scene_name in changes_per_scene.keys() or not check_if_blueprint_on_disk(scene_name, export_levels_path, gltf_extension)
+                do_export_main_scene = not export_change_detection or changed_export_parameters or scene_name in changes_per_scene.keys() or not check_if_blueprint_on_disk(scene_name, export_levels_path, gltf_extension)
                 if do_export_main_scene:
                     print("     exporting scene:", scene_name)
                     export_main_scene(bpy.data.scenes[scene_name], folder_path, addon_prefs, library_collections)
 
 
             # now deal with blueprints/collections
-            do_export_library_scene = changed_export_parameters or len(collections_to_export) > 0 # export_library_scene_name in changes_per_scene.keys()
+            do_export_library_scene = not export_change_detection or changed_export_parameters or len(collections_to_export) > 0 # export_library_scene_name in changes_per_scene.keys()
             print("export LIBRARY")
             if do_export_library_scene:
                 # we only want to go through the library scenes where our collections to export are present

tools/gltf_auto_export/auto_export/export_gltf.py

@@ -33,7 +33,8 @@ def generate_gltf_export_preferences(addon_prefs):
         export_skins=True,
         export_morph=False,
         export_apply=False,
-        export_animations=False
+        export_animations=False,
+        export_optimize_animation_size=False
     )
         
     for key in addon_prefs.__annotations__.keys():

tools/gltf_auto_export/auto_export/operators.py

@@ -9,7 +9,8 @@ from ..helpers.helpers_collections import (get_exportable_collections)
 from .auto_export import auto_export
 
 class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
-    """test"""
+    """auto export gltf"""
+    #bl_idname = "object.xxx"
     bl_idname = "export_scenes.auto_gltf"
     bl_label = "Apply settings"
     bl_options = {'PRESET', 'UNDO'}
@@ -21,7 +22,7 @@ class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
         'export_main_scene_name',
         'export_output_folder',
         'export_library_scene_name',
-
+        'export_change_detection',
         'export_blueprints',
         'export_blueprints_path',
 
@@ -79,7 +80,17 @@ class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
         # we inject all that we need, the above is not sufficient
         for (k, v) in self.properties.items():
             if k in self.white_list or k not in AutoExportGltfPreferenceNames:
-                export_props[k] = v
+                value = v
+                # FIXME: really weird having to do this
+                if k == "collection_instances_combine_mode":
+                    value = self.collection_instances_combine_mode
+                if k == "export_format":
+                    value = self.export_format
+                if k == "export_image_format":
+                    value = self.export_image_format
+                if k == "export_materials":
+                    value = self.export_materials
+                export_props[k] = value
         # we add main & library scene names to our preferences
         
         export_props['main_scene_names'] = list(map(lambda scene_data: scene_data.name, getattr(self,"main_scenes")))
@@ -93,7 +104,7 @@ class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
         #print("saving settings", bpy.data.texts[".gltf_auto_export_settings"].as_string(), "raw", json.dumps(export_props))
    
     def load_settings(self, context):
-        #print("loading settings")
+        # print("loading settings")
         settings = None
         try:
             settings = bpy.data.texts[".gltf_auto_export_settings"].as_string()
@@ -102,10 +113,10 @@ class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
 
         self.will_save_settings = False
         if settings:
-            #print("loading settings in invoke AutoExportGLTF", settings)
+            print("loading settings in invoke AutoExportGLTF", settings)
             try:
                 for (k, v) in settings.items():
-                    #print("loading setting", k, v)
+                    print("loading setting", k, v)
                     setattr(self, k, v)
                 self.will_save_settings = True
 
@@ -128,7 +139,8 @@ class AutoExportGLTF(Operator, AutoExportGltfAddonPreferences, ExportHelper):
                         item = library_scenes.add()
                         item.name = item_name
 
-            except (AttributeError, TypeError):
+            except Exception as error:
+                print("error", error)
                 self.report({"ERROR"}, "Loading export settings failed. Removed corrupted settings")
                 bpy.data.texts.remove(bpy.data.texts[".gltf_auto_export_settings"])
 

tools/gltf_auto_export/auto_export/preferences.py

@@ -15,6 +15,7 @@ AutoExportGltfPreferenceNames = [
     'export_main_scene_name',
     'export_output_folder',
     'export_library_scene_name',
+    'export_change_detection',
 
     'export_blueprints',
     'export_blueprints_path',
@@ -39,7 +40,7 @@ AutoExportGltfPreferenceNames = [
     'library_scene_names',
     'previous_export_settings',
     'filter_glob',
-    'will_save_settings'
+    'will_save_settings',
 ]
 
 class AutoExportGltfAddonPreferences(AddonPreferences):
@@ -86,6 +87,11 @@ class AutoExportGltfAddonPreferences(AddonPreferences):
         description='The name of the library scene to auto export',
         default='Library'
     )
+    export_change_detection: BoolProperty(
+        name='Change detection',
+        description='Use change detection to determine what/if should be exported',
+        default=True
+    )
     # scene components
     export_scene_settings: BoolProperty(
         name='Export scene settings',

tools/gltf_auto_export/helpers/helpers_scenes.py

@@ -2,16 +2,32 @@ import bpy
 from .helpers_collections import (set_active_collection)
 from .object_makers import (make_empty)
 
+
+# these are mostly for when using this add-on together with the bevy_components add-on
+custom_properties_to_filter_out = ['_combine', 'template', 'components_meta']
+
+def is_component_valid(object, component_name):
+    if "components_meta" in object:
+        target_components_metadata = object.components_meta.components
+        component_meta = next(filter(lambda component: component["name"] == component_name, target_components_metadata), None)
+        if component_meta != None:
+            return component_meta.enabled and not component_meta.invalid
+    return True
+
+def remove_unwanted_custom_properties(object):
+    to_remove = []
+    for component_name in object.keys():
+        if not is_component_valid(object, component_name):
+            to_remove.append(component_name)
+    
+    for cp in custom_properties_to_filter_out + to_remove:
+        if cp in object:
+            del object[cp]
+
 # copies the contents of a collection into another one while replacing library instances with empties
 def copy_hollowed_collection_into(source_collection, destination_collection, parent_empty=None, filter=None, library_collections=[], addon_prefs={}):
     collection_instances_combine_mode = getattr(addon_prefs, "collection_instances_combine_mode")
     legacy_mode = getattr(addon_prefs, "export_legacy_mode")
-    
-    root_objects = []
-    special_properties= { # to be able to reset any special property afterwards
-        "combine": [],
-    }
-
     collection_instances_combine_mode= collection_instances_combine_mode
 
     for object in source_collection.objects:
@@ -31,23 +47,26 @@ def copy_hollowed_collection_into(source_collection, destination_collection, par
             empty_obj['BlueprintName'] = '"'+collection_name+'"' if legacy_mode else '("'+collection_name+'")'
             empty_obj['SpawnHere'] = ''
 
-            for k, v in object.items():
+            # we copy custom properties over from our original object to our empty
-                if k != 'template' or k != '_combine': # do not copy these properties
+            for component_name, component_value in object.items():
-                    empty_obj[k] = v
+                if component_name not in custom_properties_to_filter_out and is_component_valid(object, component_name): #copy only valid properties
+                    empty_obj[component_name] = component_value
             if parent_empty is not None:
                 empty_obj.parent = parent_empty
         else:         
-            # we backup special properties that we do not want to export, and remove them
+            # we create a copy of our object, to leave the original one as it is
-            if '_combine' in object:
+            original_name = object.name
-                special_properties["combine"].append((object, object['_combine']))
+            object.name = original_name + "____bak"
-                del object['_combine']
+            copy = object.copy()
+            copy.name = original_name
+            remove_unwanted_custom_properties(copy)
 
             if parent_empty is not None:
-                object.parent = parent_empty
+                copy.parent = parent_empty
-                destination_collection.objects.link(object)
+                destination_collection.objects.link(copy)
             else:
-                root_objects.append(object)
+                # root_objects.append(object)
-                destination_collection.objects.link(object)
+                destination_collection.objects.link(copy)
 
     # for every sub-collection of the source, copy its content into a new sub-collection of the destination
     for collection in source_collection.children:
@@ -58,7 +77,7 @@ def copy_hollowed_collection_into(source_collection, destination_collection, par
         if parent_empty is not None:
             collection_placeholder.parent = parent_empty
 
-        nested_results = copy_hollowed_collection_into(
+        copy_hollowed_collection_into(
             source_collection = collection, 
             destination_collection = destination_collection, 
             parent_empty = collection_placeholder, 
@@ -66,19 +85,11 @@ def copy_hollowed_collection_into(source_collection, destination_collection, par
             library_collections = library_collections, 
             addon_prefs=addon_prefs
         )
-        sub_root_objects = nested_results["root_objects"]
-        sub_special_properties = nested_results["special_properties"]
     
-        root_objects.extend(sub_root_objects)
+    return {}
-        for s in sub_special_properties.keys():
-            if not s in special_properties.keys():
-                special_properties[s] = []
-            special_properties[s].extend(sub_special_properties[s])
-
-    return {"root_objects": root_objects, "special_properties": special_properties}
 
 # clear & remove "hollow scene"
-def clear_hollow_scene(temp_scene, original_root_collection, root_objects, special_properties):
+def clear_hollow_scene(temp_scene, original_root_collection):
     def restore_original_names(collection):
         if collection.name.endswith("____bak"):
             collection.name = collection.name.replace("____bak", "")
@@ -86,6 +97,9 @@ def clear_hollow_scene(temp_scene, original_root_collection, root_objects, speci
             if object.instance_type == 'COLLECTION':
                 if object.name.endswith("____bak"):
                     object.name = object.name.replace("____bak", "")
+            else: 
+                if object.name.endswith("____bak"):
+                    object.name = object.name.replace("____bak", "")
         for child_collection in collection.children:
             restore_original_names(child_collection)
     
@@ -96,37 +110,15 @@ def clear_hollow_scene(temp_scene, original_root_collection, root_objects, speci
     temp_root_collection = temp_scene.collection 
     temp_scene_objects = [o for o in temp_root_collection.objects]
     for object in temp_scene_objects:
-        if object.type == 'EMPTY':
+        bpy.data.objects.remove(object, do_unlink=True)
-            if hasattr(object, "SpawnHere"):
-                bpy.data.objects.remove(object, do_unlink=True)
-            else:
-                try: 
-                    temp_root_collection.objects.unlink(object)
-                except:
-                    print("failed to unlink", object)
-                if object in root_objects:
-                    pass
-                else:
-                    bpy.data.objects.remove(object, do_unlink=True)
-        else:
-            temp_root_collection.objects.unlink(object)
-
-    # remove temporary collections
-    """for collection in temporary_collections:
-        bpy.data.collections.remove(collection)"""
-
-    # put back special properties
-    for (object, value) in special_properties["combine"]:
-        object['_combine'] = value
-
     # remove the temporary scene
     bpy.data.scenes.remove(temp_scene)
 
 
 # convenience utility to get lists of scenes
 def get_scenes(addon_prefs):
-    level_scene_names= list(map(lambda scene: scene.name, getattr(addon_prefs,"main_scenes")))
+    level_scene_names= list(map(lambda scene: scene.name, getattr(addon_prefs,"main_scenes"))) # getattr(addon_prefs, "main_scene_names_compact").split(',')#
-    library_scene_names = list(map(lambda scene: scene.name, getattr(addon_prefs,"library_scenes")))
+    library_scene_names = list(map(lambda scene: scene.name, getattr(addon_prefs,"library_scenes"))) #getattr(addon_prefs, "main_scene_names_compact").split(',')#
 
     level_scene_names = list(filter(lambda name: name in bpy.data.scenes, level_scene_names))
     library_scene_names = list(filter(lambda name: name in bpy.data.scenes, library_scene_names))

tools/gltf_auto_export/pytest.ini

@@ -0,0 +1,6 @@
+[pytest]
+blender-template = ../../testing/bevy_example/assets/testing.blend
+addopts = -svv
+testpaths =
+    tests
+

tools/gltf_auto_export/tests/test_basic.py

@@ -0,0 +1,212 @@
+import bpy
+import os 
+import subprocess
+import json
+import pytest
+import shutil
+
+
+@pytest.fixture
+def setup_data(request):
+    print("\nSetting up resources...")
+    root_path =  "../../testing/bevy_example"
+    assets_root_path = os.path.join(root_path, "assets")
+
+    models_path =  os.path.join(assets_root_path, "models")
+    materials_path = os.path.join(assets_root_path, "materials")
+    other_materials_path = os.path.join(assets_root_path, "other_materials")
+    yield {"root_path": root_path, "assets_root_path": assets_root_path, "models_path": models_path, "materials_path": materials_path, "other_materials_path": other_materials_path}
+
+    def finalizer():
+        print("\nPerforming teardown...")
+        if os.path.exists(models_path):
+            shutil.rmtree(models_path)
+
+        if os.path.exists(materials_path):
+            shutil.rmtree(materials_path)
+
+        if os.path.exists(other_materials_path):
+            shutil.rmtree(other_materials_path)
+        
+
+    request.addfinalizer(finalizer)
+
+    return None
+
+def test_export_do_not_export_blueprints(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=False,
+    )
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint1.glb")) == False
+
+def test_export_custom_blueprints_path(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_blueprints_path = "another_library_path"
+    )
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "another_library_path", "Blueprint1.glb")) == True
+
+def test_export_materials_library(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_materials_library = True
+    )
+
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint1.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["materials_path"], "testing_materials_library.glb")) == True
+
+
+def test_export_materials_library_custom_path(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_materials_library = True,
+        export_materials_path="other_materials"
+    )
+
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint1.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["materials_path"], "testing_materials_library.glb")) == False
+    assert os.path.exists(os.path.join(setup_data["other_materials_path"], "testing_materials_library.glb")) == True
+
+def test_export_collection_instances_combine_mode(setup_data): # TODO: change & check this
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+
+    bpy.data.objects["Cube"]["dynamic"] = True
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_blueprints=True,
+        collection_instances_combine_mode = 'Embed'
+    )
+
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World_dynamic.glb")) == False
+
+
+def test_export_do_not_export_marked_assets(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_marked_assets = False
+    )
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint1.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint2.glb")) == False
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint3.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint4_nested.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "library", "Blueprint5.glb")) == False
+
+
+def test_export_separate_dynamic_and_static_objects(setup_data):
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+
+    bpy.data.objects["Cube"]["dynamic"] = True
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_separate_dynamic_and_static_objects = True
+    )
+
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World.glb")) == True
+    assert os.path.exists(os.path.join(setup_data["models_path"], "World_dynamic.glb")) == True

tools/gltf_auto_export/tests/test_bevy_integration.py

@@ -0,0 +1,93 @@
+import bpy
+import os 
+import subprocess
+import json
+import pytest
+import shutil
+
+@pytest.fixture
+def setup_data(request):
+    print("\nSetting up resources...")
+
+    def finalizer():
+        root_path =  "../../testing/bevy_example"
+        assets_root_path = os.path.join(root_path, "assets")
+        models_path =  os.path.join(assets_root_path, "models")
+        #materials_path = os.path.join("../../testing", "materials")
+        #other_materials_path = os.path.join("../../testing", "other_materials")
+
+        print("\nPerforming teardown...")
+        if os.path.exists(models_path):
+            shutil.rmtree(models_path)
+
+        """if os.path.exists(materials_path):
+            shutil.rmtree(materials_path)
+
+        if os.path.exists(other_materials_path):
+            shutil.rmtree(other_materials_path)"""
+        
+
+    request.addfinalizer(finalizer)
+
+    return None
+
+
+"""
+- removes existing gltf files if needed
+- calls exporter on the testing scene
+- launches bevy app & checks for output
+- if all worked => test is a-ok
+"""
+def test_export_complex(setup_data):
+    root_path = "../../testing/bevy_example"
+    assets_root_path = os.path.join(root_path, "assets")
+    models_path = os.path.join(assets_root_path, "models")
+    auto_export_operator = bpy.ops.export_scenes.auto_gltf
+
+    # with change detection
+    # first, configure things
+    # we use the global settings for that
+    export_props = {
+        "main_scene_names" : ['World'],
+        "library_scene_names": ['Library']
+    }
+    stored_settings = bpy.data.texts[".gltf_auto_export_settings"] if ".gltf_auto_export_settings" in bpy.data.texts else bpy.data.texts.new(".gltf_auto_export_settings")
+    stored_settings.clear()
+    stored_settings.write(json.dumps(export_props))
+
+    # move the main cube
+    bpy.data.objects["Cube"].location = [1, 0, 0]
+    # move the cube in the library
+    bpy.data.objects["Blueprint1_mesh"].location = [1, 2, 1]
+
+    auto_export_operator(
+        direct_mode=True,
+        export_output_folder="./models",
+        export_scene_settings=True,
+        export_blueprints=True,
+        export_legacy_mode=False
+    )
+    # blueprint1 => has an instance, got changed, should export
+    # blueprint2 => has NO instance, but marked as asset, should export
+    # blueprint3 => has NO instance, not marked as asset, used inside blueprint 4: should export
+    # blueprint4 => has an instance, with nested blueprint3, should export
+    # blueprint5 => has NO instance, not marked as asset, should NOT export
+
+    assert os.path.exists(os.path.join(models_path, "World.glb")) == True
+
+    assert os.path.exists(os.path.join(models_path, "library", "Blueprint1.glb")) == True
+    assert os.path.exists(os.path.join(models_path, "library", "Blueprint2.glb")) == True
+    assert os.path.exists(os.path.join(models_path, "library", "Blueprint3.glb")) == True
+    assert os.path.exists(os.path.join(models_path, "library", "Blueprint4_nested.glb")) == True
+    assert os.path.exists(os.path.join(models_path, "library", "Blueprint5.glb")) == False
+
+    # now run bevy
+    bla = "cargo run --features bevy/dynamic_linking"
+    # assert getattr(propertyGroup, 'a') == 0.5714026093482971
+    FNULL = open(os.devnull, 'w')    #use this if you want to suppress output to stdout from the subprocess
+    filename = "my_file.dat"
+    args = bla
+    #subprocess.call(args, stdout=FNULL, stderr=FNULL, shell=False, cwd=bevy_run_exec_path)
+    return_code = subprocess.call(["cargo", "run", "--features", "bevy/dynamic_linking"], cwd=root_path)
+    print("RETURN CODE OF BEVY APP", return_code)
+    assert return_code == 0

tools/gltf_auto_export/ui/main.py

@@ -37,7 +37,6 @@ class GLTF_PT_auto_export_main(bpy.types.Panel):
 
         sfile = context.space_data
 
-
 class GLTF_PT_auto_export_root(bpy.types.Panel):
     bl_space_type = 'FILE_BROWSER'
     bl_region_type = 'TOOL_PROPS'
@@ -66,6 +65,7 @@ class GLTF_PT_auto_export_root(bpy.types.Panel):
 
         layout.active = operator.auto_export
         layout.prop(operator, 'will_save_settings')
+        layout.prop(operator, "export_change_detection")
         layout.prop(operator, "export_output_folder")
         layout.prop(operator, "export_scene_settings")
         layout.prop(operator, "export_legacy_mode")
@@ -125,8 +125,6 @@ class GLTF_PT_auto_export_root(bpy.types.Panel):
         remove_operator.scene_type = 'library'
         col.separator()
       
-
-      
 class GLTF_PT_auto_export_blueprints(bpy.types.Panel):
     bl_space_type = 'FILE_BROWSER'
     bl_region_type = 'TOOL_PROPS'