feat(Blenvy:Blender): fixed a number of remaining issues with project serialization & attempted to fix scene rename detection

* moved out collections serialization from scenes loop
 * fixed issue with materials hashing
 * fixed issue with custom properties hashing
 * fixed issue with scene properties hashing
 * minor related tweaks
 * still pulling my hair out over weirdness with scene rename detection and handling

tools/blenvy/TODO.md

@@ -153,7 +153,16 @@ Blender side:
         - [x] filter out xxx_ui propgroups
 - [x] fix missing main/lib scene names in blenvy_common_settings
 - [x] fix incorect updating of main/lib scenes list in settings
-- [ ] and what about scene renames ?? perhaps tigger a forced "save settings" before doing the export ?
+- [ ] add handling of scene renames
+    - [x] store (on load) a mapping of scene objects to scene names
+    - [x] on save, calculate another mapping of scene objects to scene names
+        - if there is a mismatch between the stored version & the new version for a given scene, it has been renamed !
+    - [x] pass this information to scene diffing to remap old/new scene names
+    - [ ] move the rename detection to AFTER scene serialization, otherwise we could have a naming mistmatch
+        - weird behaviour, perhaps find another way , ie for example replace scene name in saved previous data
+        - is post save causing the issue ? review
+- [ ] investigate weird issue of changes detected to all after a reload 
+
 - [x] should we write the previous _xxx data only AFTER a sucessfull export only ?
 - [x] finer grained control of setting changes to trigger a re-export:
     - [x] common: any of them should trigger
@@ -187,9 +196,11 @@ Blender side:
     - [x] fix selection logic 
 - [x] update testing blend files
 - [x] disable 'export_hierarchy_full_collections' for all cases: not reliable and redudant
-- [ ] fix systematic material exports despite no changes
-- [ ] investigate lack of detection of changes of adding/changing components
-    - [ ] change scene serialization to account for collections ...sigh
+- [x] fix systematic material exports despite no changes
+- [x] investigate lack of detection of changes of adding/changing components
+    - [x] change scene serialization to account for collections ...sigh
+    - [x] also add one NOT PER scene for materials, to fix the above issue with materials
+    - [x] move material caching into hash material
 - [ ] also remove ____dummy____.bin when export format is gltf
 
 - [ ] fix/cleanup asset information injection (also needed for hot reload)
@@ -224,7 +235,6 @@ Blender side:
 
 - [ ] inject_export_path_into_internal_blueprints should be called on every asset/blueprint scan !! Not just on export
 - [ ] undo after a save removes any saved "serialized scene" data ? DIG into this
-- [ ] handle scene renames between saves (breaks diffing) => very hard to achieve
 - [ ] add tests for
     - [ ] disabled components 
     - [ ] blueprint instances as children of blueprint instances
@@ -269,11 +279,13 @@ Bevy Side:
     - [x] account for changes impact both parent & children (ie "world" and "blueprint3") for example, which leads to a crash as there is double despawn /respawn so we need to filter things out 
     - [x] if there are many assets/blueprints that have changed at the same time, it causes issues similar to the above, so apply a similar fix
         - [x] also ignore any entities currently spawning (better to loose some information, than cause a crash)
-    - [ ] something is off with blueprint level components
-    - [ ] add the root blueprint itself to the assets either on the blender side or on the bevy side programatically
     - [x] for sub blueprint tracking: do not propagate/ deal with parent blueprints if they are not themselves Spawning (ie filter out by "BlueprintSpawning")
-    - [ ] invalidate despawned entity & parent entities AABB 
     - [x] cleanup internals
+    - [ ] analyse what is off with blueprint level components 
+    - [ ] add the root blueprint itself to the assets either on the blender side or on the bevy side programatically
+    - [ ] invalidate despawned entity & parent entities AABB 
+    - [ ] add unloading/cache removal of materials
+
 
 
 - [x] review & change general component insertion & spawning ordering & logic

tools/blenvy/__init__.py

@@ -152,6 +152,28 @@ def register():
     bpy.app.handlers.depsgraph_update_post.append(post_update)
     bpy.app.handlers.save_post.append(post_save)
 
+
+    """ handle = object()
+
+    subscribe_to = bpy.types.Scene, "name" # 
+
+    def notify_test(context):
+        #if (context.scene.type == 'MESH'):
+        print("Renamed", dir(context), context.scenes)
+
+    bpy.msgbus.subscribe_rna(
+        key=subscribe_to,
+        owner=bpy,
+        args=(bpy.context,),
+        notify=notify_test,
+    )"""
+
+
+    #bpy.msgbus.publish_rna(key=subscribe_to)
+
+
+
+
 def unregister():
     for cls in classes:
         bpy.utils.unregister_class(cls)

tools/blenvy/add_ons/auto_export/blueprints/get_blueprints_to_export.py

@@ -6,7 +6,7 @@ def is_blueprint_always_export(blueprint):
     return blueprint.collection['always_export'] if 'always_export' in blueprint.collection else False
 
 # this also takes the split/embed mode into account: if a nested collection changes AND embed is active, its container collection should also be exported
-def get_blueprints_to_export(changes_per_scene, changed_export_parameters, blueprints_data, settings):
+def get_blueprints_to_export(changes_per_scene, changes_per_collection, changed_export_parameters, blueprints_data, settings):
     export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
     blueprints_path_full = getattr(settings,"blueprints_path_full", "")
     change_detection = getattr(settings.auto_export, "change_detection")
@@ -37,8 +37,9 @@ def get_blueprints_to_export(changes_per_scene, changed_export_parameters, bluep
 
         # also deal with blueprints that are always marked as "always_export"
         blueprints_always_export = [blueprint for blueprint in internal_blueprints if is_blueprint_always_export(blueprint)]
+        changed_blueprints_based_on_changed_collections = [blueprint for blueprint in internal_blueprints if blueprint.collection in changes_per_collection.values()]
 
-        blueprints_to_export =  list(set(changed_blueprints + blueprints_not_on_disk + blueprints_always_export))
+        blueprints_to_export =  list(set(changed_blueprints + blueprints_not_on_disk + blueprints_always_export + changed_blueprints_based_on_changed_collections))
 
 
     # filter out blueprints that are not marked & deal with the different combine modes

tools/blenvy/add_ons/auto_export/common/auto_export.py

@@ -17,7 +17,7 @@ from ..levels.bevy_scene_components import remove_scene_components, upsert_scene
 
 
 """this is the main 'central' function for all auto export """
-def auto_export(changes_per_scene, changed_export_parameters, settings):
+def auto_export(changes_per_scene, changes_per_collection, changes_per_material, changed_export_parameters, settings):
     # have the export parameters (not auto export, just gltf export) have changed: if yes (for example switch from glb to gltf, compression or not, animations or not etc), we need to re-export everything
     print ("changed_export_parameters", changed_export_parameters)
     try:
@@ -63,15 +63,15 @@ def auto_export(changes_per_scene, changed_export_parameters, settings):
         if do_export_blueprints:
             print("EXPORTING")
             # get blueprints/collections infos
-            (blueprints_to_export) = get_blueprints_to_export(changes_per_scene, changed_export_parameters, blueprints_data, settings)
+            (blueprints_to_export) = get_blueprints_to_export(changes_per_scene, changes_per_collection, changed_export_parameters, blueprints_data, settings)
              
             # get level/main scenes infos
-            (main_scenes_to_export) = get_levels_to_export(changes_per_scene, changed_export_parameters, blueprints_data, settings)
+            (main_scenes_to_export) = get_levels_to_export(changes_per_scene, changes_per_collection, changed_export_parameters, blueprints_data, settings)
 
             # since materials export adds components we need to call this before blueprints are exported
             # export materials & inject materials components into relevant objects
             # FIXME: improve change detection, perhaps even add "material changes"
-            if export_materials_library and (changed_export_parameters or len(changes_per_scene.keys()) > 0 ):
+            if export_materials_library and (changed_export_parameters or len(changes_per_material.keys()) > 0 ):
                 export_materials(blueprints_data.blueprint_names, settings.library_scenes, settings)
 
             # update the list of tracked exports

tools/blenvy/add_ons/auto_export/common/prepare_and_export.py

@@ -13,20 +13,25 @@ def prepare_and_export():
     auto_export_settings = blenvy.auto_export
     if auto_export_settings.auto_export: # only do the actual exporting if auto export is actually enabled
 
+        
         # determine changed objects
-        per_scene_changes, project_hash = get_changes_per_scene(settings=blenvy)
+        per_scene_changes, per_collection_changes, per_material_changes, project_hash = get_changes_per_scene(settings=blenvy)
         # determine changed parameters 
         setting_changes, current_common_settings, current_export_settings, current_gltf_settings = get_setting_changes()
         print("changes: settings:", setting_changes)
         print("changes: scenes:", per_scene_changes)
+        print("changes: collections:", per_collection_changes)
+        print("changes: materials:", per_material_changes)
 
-        print("project_hash", project_hash)
         # do the actual export
         # blenvy.auto_export.dry_run = 'NO_EXPORT'#'DISABLED'#
-        auto_export(per_scene_changes, setting_changes, blenvy)
+        auto_export(per_scene_changes, per_collection_changes, per_material_changes, setting_changes, blenvy)
 
         # -------------------------------------
         # now that this point is reached, the export should have run correctly, so we can save all the current state to the "previous one"
+        for scene in bpy.data.scenes:
+            blenvy.scenes_to_scene_names[scene] = scene.name
+        print("bla", blenvy.scenes_to_scene_names, "hash", project_hash)
         # save the current project hash as previous
         upsert_settings(".blenvy.project_serialized_previous", project_hash, overwrite=True)
         # write the new settings to the old settings

tools/blenvy/add_ons/auto_export/common/project_diff.py

@@ -1,6 +1,7 @@
 import json
+import traceback
 import bpy
-from .serialize_scene import serialize_scene
+from .serialize_project import serialize_project
 from blenvy.settings import load_settings, upsert_settings
 
 def bubble_up_changes(object, changes_per_scene):
@@ -18,6 +19,7 @@ def serialize_current(settings):
             print("GENERATE ID")
             scene.id_test = str(uuid.uuid4())
         print("SCENE ID", scene.id_test)
+    #https://blender.stackexchange.com/questions/216411/whats-the-replacement-for-id-or-hash-on-bpy-objects
 
     current_scene = bpy.context.window.scene
     bpy.context.window.scene = bpy.data.scenes[0]
@@ -26,7 +28,7 @@ def serialize_current(settings):
     """with bpy.context.temp_override(scene=bpy.data.scenes[1]):
         bpy.context.scene.frame_set(0)"""
     
-    current = serialize_scene(settings)
+    current = serialize_project(settings)
     bpy.context.window.scene = current_scene
 
     # reset previous frames
@@ -39,62 +41,125 @@ def get_changes_per_scene(settings):
     previous = load_settings(".blenvy.project_serialized_previous")
     current = serialize_current(settings)
 
+    # so in Blender, there is no uuid per object, hash changes on undo redo, adress/pointer to object may change at any undo / redo without possible way of knowing when
+    # so... ugh
+    scenes_to_scene_names = {}
+    for scene in bpy.data.scenes:
+        scenes_to_scene_names[scene] = scene.name
+    print("cur scenes_to_scene_names", scenes_to_scene_names)
+    print("pre fpp", settings.scenes_to_scene_names)
+
+    scene_renames = {}
+    for scene in settings.scenes_to_scene_names:
+        if scene in scenes_to_scene_names:
+            previous_name_of_scene = settings.scenes_to_scene_names[scene]
+            current_name_of_scene = scenes_to_scene_names[scene]
+            if previous_name_of_scene != current_name_of_scene:
+                scene_renames[current_name_of_scene] = previous_name_of_scene
+                print("SCENE RENAMED !previous", previous_name_of_scene, "current", current_name_of_scene)
+    print("scene new name to old name", scene_renames)
+
     # determine changes
     changes_per_scene = {}
+    changes_per_collection = {}
+    changes_per_material = {}
     try:
-        changes_per_scene = project_diff(previous, current, settings)
+        (changes_per_scene, changes_per_collection, changes_per_material) = project_diff(previous, current, scene_renames, settings)
     except Exception as error:
-        print("failed to compare current serialized scenes to previous ones", error)
+        print(traceback.format_exc())
+        print("failed to compare current serialized scenes to previous ones: Error:", error)
 
-    return changes_per_scene, current
+    return changes_per_scene, changes_per_collection, changes_per_material, current
 
 
-def project_diff(previous, current, settings):
+def project_diff(previous, current, scene_renames, settings):
     """print("previous", previous)
     print("current", current)"""
     if previous is None or current is None:
         return {}
     
     changes_per_scene = {}
+    changes_per_collection = {}
+    changes_per_material = {}
 
-    # TODO : how do we deal with changed scene names ???
     # possible ? on each save, inject an id into each scene, that cannot be copied over
+    current_scenes = current["scenes"]
+    previous_scenes = previous["scenes"]
 
-    for scene in current:
-        current_object_names =list(current[scene].keys())
+    print("previous scenes", previous_scenes.keys())
+    print("current scenes", current_scenes.keys())
+    print("new names to old names", scene_renames)
+    print("")
+    for scene_name in current_scenes:
+        print("scene name", scene_name, scene_name in scene_renames)
+        current_scene = current_scenes[scene_name]
+        previous_scene = previous_scenes[scene_name] if not scene_name in scene_renames else previous_scenes[scene_renames[scene_name]]
+        current_object_names =list(current_scene.keys())
 
-        if scene in previous: # we can only compare scenes that are in both previous and current data
+        updated_scene_name = scene_name if not scene_name in scene_renames else scene_renames[scene_name]
+        if updated_scene_name in previous_scenes: # we can only compare scenes that are in both previous and current data, with the above we also account for renames
 
-            previous_object_names = list(previous[scene].keys())
+            previous_object_names = list(previous_scene.keys())
             added =  list(set(current_object_names) - set(previous_object_names))
             removed = list(set(previous_object_names) - set(current_object_names))
             
             for obj in added:
-                if not scene in changes_per_scene:
-                    changes_per_scene[scene] = {}
-                changes_per_scene[scene][obj] = bpy.data.objects[obj] if obj in bpy.data.objects else None
+                if not scene_name in changes_per_scene:
+                    changes_per_scene[scene_name] = {}
+                changes_per_scene[scene_name][obj] = bpy.data.objects[obj] if obj in bpy.data.objects else None
             
             # TODO: how do we deal with this, as we obviously do not have data for removed objects ?
             for obj in removed:
-                if not scene in changes_per_scene:
-                    changes_per_scene[scene] = {}
-                changes_per_scene[scene][obj] = None
+                if not scene_name in changes_per_scene:
+                    changes_per_scene[scene_name] = {}
+                changes_per_scene[scene_name][obj] = None
 
-            for object_name in list(current[scene].keys()): # TODO : exclude directly added/removed objects  
-                if object_name in previous[scene]:
-                    current_obj = current[scene][object_name]
-                    prev_obj = previous[scene][object_name]
+            for object_name in list(current_scene.keys()): # TODO : exclude directly added/removed objects  
+                if object_name in previous_scene:
+                    current_obj = current_scene[object_name]
+                    prev_obj = previous_scene[object_name]
                     same = str(current_obj) == str(prev_obj)
 
                     if not same:
-                        if not scene in changes_per_scene:
-                            changes_per_scene[scene] = {}
+                        if not scene_name in changes_per_scene:
+                            changes_per_scene[scene_name] = {}
 
                         target_object = bpy.data.objects[object_name] if object_name in bpy.data.objects else None
-                        changes_per_scene[scene][object_name] = target_object
-                        bubble_up_changes(target_object, changes_per_scene[scene])
+                        changes_per_scene[scene_name][object_name] = target_object
+                        bubble_up_changes(target_object, changes_per_scene[scene_name])
                         # now bubble up for instances & parents
         else:
-            print(f"scene {scene} not present in previous data")
+            print(f"scene {scene_name} not present in previous data")
 
-    return changes_per_scene
+
+
+    current_collections = current["collections"]
+    previous_collections = previous["collections"]
+
+    for collection_name in current_collections:
+        if collection_name in previous_collections:
+            current_collection = current_collections[collection_name]
+            prev_collection = previous_collections[collection_name]
+            same = str(current_collection) == str(prev_collection)
+
+            if not same:
+                #if not collection_name in changes_per_collection:
+                target_collection = bpy.data.collections[collection_name] if collection_name in bpy.data.collections else None
+                changes_per_collection[collection_name] = target_collection
+
+    # process changes to materials
+    current_materials = current["materials"]
+    previous_materials = previous["materials"]
+
+    for material_name in current_materials:
+        if material_name in previous_materials:
+            current_material = current_materials[material_name]
+            prev_material = previous_materials[material_name]
+            same = str(current_material) == str(prev_material)
+
+            if not same:
+                #if not material_name in changes_per_material:
+                target_material = bpy.data.materials[material_name] if material_name in bpy.data.materials else None
+                changes_per_material[material_name] = target_material
+        
+    return (changes_per_scene, changes_per_collection, changes_per_material)

tools/blenvy/add_ons/auto_export/common/serialize_project.py

@@ -126,7 +126,10 @@ type_lookups = {
     bpy.types.bpy_prop_collection: _lookup_collection,
     bpy.types.MaterialLineArt: _lookup_materialLineArt,
     bpy.types.NodeTree: node_tree,
-    bpy.types.CurveProfile: _lookup_generic
+    bpy.types.CurveProfile: _lookup_generic,
+    bpy.types.RaytraceEEVEE: _lookup_generic,
+    bpy.types.CurveMapping: _lookup_generic,
+    bpy.types.MaterialGPencilStyle: _lookup_generic,
 }
 
 def convert_field(raw_value, field_name="", scan_node_tree=True):
@@ -234,10 +237,11 @@ def animation_hash(obj):
 def custom_properties_hash(obj):
     custom_properties = {}
     for property_name in obj.keys():        
-        if property_name not in '_RNA_UI' and property_name != 'components_meta':
-            print("custom properties stuff for", obj, property_name)
-            custom_properties[property_name] = obj[property_name]
-    print("custom props for hashing", custom_properties, str(h1_hash(str(custom_properties))) )
+        if property_name not in '_RNA_UI' and property_name != 'components_meta' and property_name != 'user_assets':
+            custom_properties[property_name] = obj[property_name] #generic_fields_hasher_evolved(data=obj[property_name],fields_to_ignore=fields_to_ignore_generic)
+        """if property_name == "user_assets":
+        print("tptp")
+        custom_properties[property_name] = generic_fields_hasher_evolved(data=obj[property_name],fields_to_ignore=fields_to_ignore_generic)"""
     return str(h1_hash(str(custom_properties)))
 
 def camera_hash(obj):
@@ -273,12 +277,18 @@ def armature_hash(obj):
         print("bone", bone, bone_hash(bone))"""
     return str(fields)
 
-def material_hash(material, settings):
+def material_hash(material, cache, settings):
+    cached_hash = cache['materials'].get(material.name, None)
+    if cached_hash:
+        return cached_hash
+    else:
         scan_node_tree = settings.auto_export.materials_in_depth_scan
         #print("HASHING MATERIAL", material.name)
         hashed_material = generic_fields_hasher_evolved(material, fields_to_ignore_generic, scan_node_tree=scan_node_tree)
         #print("HASHED MATERIAL", hashed_material)
-    return str(hashed_material)
+        hashed_material = str(hashed_material)
+        cache['materials'][material.name] = hashed_material
+        return hashed_material
 
 # TODO: this is partially taken from export_materials utilities, perhaps we could avoid having to fetch things multiple times ?
 def materials_hash(obj, cache, settings):
@@ -286,20 +296,12 @@ def materials_hash(obj, cache, settings):
     materials = []
     for material_slot in obj.material_slots:
         material = material_slot.material
-        """cached_hash = cache['materials'].get(material.name, None)
-        if cached_hash:
-            materials.append(cached_hash)
-            print("CAACHED")
-        else:
-            mat = material_hash(material, settings)
-            cache['materials'][material.name] = mat
-            materials.append(mat)"""
-        mat = material_hash(material, settings)
-        cache['materials'][material.name] = mat
+        mat = material_hash(material, cache, settings)
         materials.append(mat)
 
     return str(h1_hash(str(materials)))
 
+
 def modifier_hash(modifier_data, settings):
     scan_node_tree = settings.auto_export.modifiers_in_depth_scan
     #print("HASHING MODIFIER", modifier_data.name)
@@ -307,7 +309,6 @@ def modifier_hash(modifier_data, settings):
     #print("modifier", modifier_data.name, "hashed", hashed_modifier)
     return str(hashed_modifier)
     
-
 def modifiers_hash(object, settings):
     modifiers = []
     for modifier in object.modifiers:
@@ -316,24 +317,22 @@ def modifiers_hash(object, settings):
         #print("  ")
     return str(h1_hash(str(modifiers)))
 
-def serialize_scene(settings): 
+
+def serialize_project(settings): 
     cache = {"materials":{}}
-    print("serializing scenes")
-    data = {}
+    print("serializing project")
 
-
-    # render settings are injected into each scene
-
-
-    # TODO: only go through scenes actually in our list
-    for scene in bpy.data.scenes:
+    per_scene = {}
+    for scene in settings.main_scenes + settings.library_scenes: #bpy.data.scenes:
         print("scene", scene.name)
         # ignore temporary scenes
         if scene.name.startswith(TEMPSCENE_PREFIX):
             continue
-        data[scene.name] = {}
+        per_scene[scene.name] = {}
+        
 
         custom_properties = custom_properties_hash(scene) if len(scene.keys()) > 0 else None
+        # render settings are injected into each scene
         eevee_settings = generic_fields_hasher_evolved(scene.eevee, fields_to_ignore=fields_to_ignore_generic) # TODO: ignore most of the fields
         view_settings = generic_fields_hasher_evolved(scene.view_settings, fields_to_ignore=fields_to_ignore_generic)
         
@@ -344,8 +343,7 @@ def serialize_scene(settings):
         }
         #generic_fields_hasher_evolved(scene.eevee, fields_to_ignore=fields_to_ignore_generic)
         # FIXME: how to deal with this cleanly
-        print("SCENE CUSTOM PROPS", custom_properties)
-        data[scene.name]["____scene_settings"] = str(h1_hash(str(scene_field_hashes)))
+        per_scene[scene.name]["____scene_settings"] = str(h1_hash(str(scene_field_hashes)))
 
 
         for object in scene.objects:
@@ -382,13 +380,37 @@ def serialize_scene(settings):
 
             object_field_hashes_filtered = {key: object_field_hashes[key] for key in object_field_hashes.keys() if object_field_hashes[key] is not None}
             objectHash = str(h1_hash(str(object_field_hashes_filtered)))
-            data[scene.name][object.name] = objectHash
+            per_scene[scene.name][object.name] = objectHash
 
-    """print("data", data)
-    print("")
-    print("")
-    print("data json", json.dumps(data))"""
+    per_collection = {}
+    # also hash collections (important to catch component changes per blueprints/collections)
+    # collections_in_scene = [collection for collection in bpy.data.collections if scene.user_of_id(collection)]
+    for collection in bpy.data.collections:# collections_in_scene:
+        #loc, rot, scale = bpy.context.object.matrix_world.decompose()
+        #visibility = collection.visible_get()            
+        custom_properties = custom_properties_hash(collection) if len(collection.keys()) > 0 else None
+        # parent = collection.parent.name if collection.parent else None
+        #collections = [collection.name for collection in object.users_collection]
 
-    return data # json.dumps(data)
+        collection_field_hashes = {
+            "name": collection.name,
+            # "visibility": visibility,
+            "custom_properties": custom_properties,
+            #"parent": parent,
+            #"collections": collections,
+        }
+
+        collection_field_hashes_filtered = {key: collection_field_hashes[key] for key in collection_field_hashes.keys() if collection_field_hashes[key] is not None}
+
+        collectionHash = str(h1_hash(str(collection_field_hashes_filtered)))
+        per_collection[collection.name] = collectionHash
+
+    # and also hash materials to avoid constanstly exporting materials libraries, and only 
+    # actually this should be similar to change detections for scenes
+    per_material = {}
+    for material in bpy.data.materials:
+        per_material[material.name] = str(h1_hash(material_hash(material, cache, settings)))
+
+    return {"scenes": per_scene, "collections": per_collection, "materials": per_material}
 
 

tools/blenvy/add_ons/auto_export/levels/get_levels_to_export.py

@@ -55,7 +55,7 @@ def should_level_be_exported(scene_name, changed_export_parameters, changes_per_
     )
 
 # this also takes the split/embed mode into account: if a collection instance changes AND embed is active, its container level/world should also be exported
-def get_levels_to_export(changes_per_scene, changed_export_parameters, blueprints_data, settings):
+def get_levels_to_export(changes_per_scene, changes_per_collection, changed_export_parameters, blueprints_data, settings):
     # determine list of main scenes to export
     # 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)
     main_scenes_to_export = [scene_name for scene_name in settings.main_scenes_names if should_level_be_exported(scene_name, changed_export_parameters, changes_per_scene, blueprints_data, settings)]

tools/blenvy/blueprints/blueprint_helpers.py

@@ -33,7 +33,6 @@ def inject_export_path_into_internal_blueprints(internal_blueprints, blueprints_
     for blueprint in internal_blueprints:
         blueprint_exported_path = os.path.join(blueprints_path, f"{blueprint.name}{gltf_extension}")
         # print("injecting blueprint path", blueprint_exported_path, "for", blueprint.name)
-        print("blueprint_exported_path", blueprint_exported_path)
         blueprint.collection["export_path"] = blueprint_exported_path
         if export_materials_library:
             blueprint.collection["materials_path"] = materials_exported_path

tools/blenvy/core/blenvy_manager.py

@@ -37,9 +37,9 @@ def is_scene_already_in_use(self, scene):
         return True
 
 class BlenvyManager(PropertyGroup):
-
     settings_save_path = ".blenvy_common_settings" # where to store data in bpy.texts
     settings_save_enabled: BoolProperty(name="settings save enabled", default=True) # type: ignore
+    scenes_to_scene_names = {} # used to map scenes to scene names to detect scene renames for diffing
 
     mode: EnumProperty(
         items=(
@@ -187,3 +187,7 @@ class BlenvyManager(PropertyGroup):
 
         # now load component settings
         self.components.load_settings()
+
+
+        for scene in bpy.data.scenes:
+            self.scenes_to_scene_names[scene] = scene.name