feat(Blenvy:Blender):

* fixed issue with parenting due to Blender's very weird matrix_parent_inverse ... solves all issues with children of empties
blueprint instances within blueprint instances etc having the wrong transforms in some cases
 * fixed bad gltf format propagation: semi ok solution, but a cleaner one would be better
 * added additional custom properties to the blacklist , level/blueprint exports are now using the one in the constants
instead of a local copy
 * minor tweaks & cleanups

tools/blenvy/TODO.md

@@ -199,7 +199,8 @@ Blender side:
     - [ ] disabled components 
     - [ ] blueprint instances as children of blueprint instances
     - [ ] blueprint instances as children of empties
-- [x] update testing files
+- [x] update testing blend files
+- [ ] disable 'export_hierarchy_full_collections' for all cases: not reliable and redudant
 
 
 - [ ] add option to 'split out' meshes from blueprints ? 

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

@@ -21,11 +21,6 @@ def auto_export(changes_per_scene, 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:
-        # path to the current blend file
-        file_path = bpy.data.filepath
-        # Get the folder
-        blend_file_path = os.path.dirname(file_path)
-
         #should we use change detection or not 
         change_detection = getattr(settings.auto_export, "change_detection")
         export_scene_settings = getattr(settings.auto_export, "export_scene_settings")
@@ -47,7 +42,10 @@ def auto_export(changes_per_scene, changed_export_parameters, settings):
 
         # we inject the blueprints export path
         blueprints_path = getattr(settings,"blueprints_path")
-        inject_export_path_into_internal_blueprints(internal_blueprints=blueprints_data.internal_blueprints, blueprints_path=blueprints_path, gltf_extension=gltf_extension)
+        # inject the "export_path" and "material_path" properties into the internal blueprints
+        inject_export_path_into_internal_blueprints(internal_blueprints=blueprints_data.internal_blueprints, blueprints_path=blueprints_path, gltf_extension=gltf_extension, settings=settings)
+
+
         for blueprint in blueprints_data.blueprints:
             bpy.context.window_manager.blueprints_registry.add_blueprint(blueprint)
         #bpy.context.window_manager.blueprints_registry.refresh_blueprints()

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

@@ -119,6 +119,10 @@ def duplicate_object(object, parent, combine_mode, destination_collection, bluep
     # do this both for empty replacements & normal copies
     if parent is not None:
         copy.parent = parent
+        # without this, the copy"s offset from parent (if any ) will not be set correctly ! 
+        # see here for example https://blender.stackexchange.com/questions/3763/parenting-messes-up-transforms-where-is-the-offset-stored
+        copy.matrix_parent_inverse = object.matrix_parent_inverse
+
     remove_unwanted_custom_properties(copy)
     copy_animation_data(object, copy)
 

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

@@ -24,6 +24,7 @@ def generate_gltf_export_settings(settings):
         export_cameras=True,
         export_extras=True, # For custom exported properties.
         export_lights=True,
+        export_hierarchy_full_collections=False
 
         #export_texcoords=True,
         #export_normals=True,
@@ -54,6 +55,7 @@ def generate_gltf_export_settings(settings):
 
     standard_gltf_exporter_settings = get_standard_exporter_settings()
     
+    # these essential params should NEVER be overwritten , no matter the settings of the standard exporter
     constant_keys = [
         'use_selection',
         'use_visible',
@@ -63,9 +65,10 @@ def generate_gltf_export_settings(settings):
         'export_cameras',
         'export_extras', # For custom exported properties.
         'export_lights',
+        'export_hierarchy_full_collections'
     ]
 
-    # a certain number of essential params should NEVER be overwritten , no matter the settings of the standard exporter
+    #  
     for key in standard_gltf_exporter_settings.keys():
         if str(key) not in constant_keys:
             gltf_export_settings[key] =  standard_gltf_exporter_settings.get(key)

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

@@ -5,7 +5,7 @@ from blenvy.core.object_makers import (make_empty)
 from .duplicate_object import duplicate_object
 from .export_gltf import export_gltf
 from blenvy.core.scene_helpers import add_scene_property
-
+from ..constants import custom_properties_to_filter_out
 """ 
 generates a temporary scene, fills it with data, cleans up after itself
     * named using temp_scene_name 
@@ -19,7 +19,7 @@ def generate_temporary_scene_and_export(settings, gltf_export_settings, gltf_out
     temp_scene = bpy.data.scenes.new(name=temp_scene_name)
     temp_root_collection = temp_scene.collection
 
-    properties_black_list = ['glTF2ExportSettings', 'assets', 'user_assets', 'components_meta', 'Components_meta', 'Generated_assets', 'generated_assets']
+    properties_black_list = custom_properties_to_filter_out
     if additional_data is not None: # FIXME not a fan of having this here
         for entry in dict(additional_data):
             # we copy everything over except those on the black list
@@ -75,7 +75,6 @@ def generate_temporary_scene_and_export(settings, gltf_export_settings, gltf_out
 # 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, blueprints_data=None, settings={}):
     collection_instances_combine_mode = getattr(settings.auto_export, "collection_instances_combine_mode")
-
     for object in source_collection.objects:
         if object.name.endswith("____bak"): # some objects could already have been handled, ignore them
             continue       

tools/blenvy/add_ons/auto_export/constants.py

@@ -1,4 +1,11 @@
 TEMPSCENE_PREFIX = "__temp_scene"
 
-#hard coded custom properties to ignore
+#hard coded custom properties to ignore on export
-custom_properties_to_filter_out = ['_combine', 'template', 'components_meta']
+custom_properties_to_filter_out = [
+    'glTF2ExportSettings', 
+    'assets', 'user_assets', 'Generated_assets', 'generated_assets', 
+    'components_meta', 'Components_meta', 
+    '_combine', 'template', 
+    'Blenvy_scene_type', 'blenvy_scene_type'
+    ]
+#['_combine', 'template', 'components_meta', 'Components_meta', 'Blenvy_scene_type']

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

@@ -55,7 +55,7 @@ def export_main_scene(scene, settings, blueprints_data):
         auto_assets = []
 
         all_assets = []
-        export_gltf_extension = getattr(settings.auto_export, "export_gltf_extension", ".glb")
+        export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
 
         blueprints_path =  getattr(settings, "blueprints_path")
         for blueprint in blueprints_in_scene:
@@ -64,6 +64,11 @@ def export_main_scene(scene, settings, blueprints_data):
             else:
                 # get the injected path of the external blueprints
                 blueprint_exported_path = blueprint.collection['export_path'] if 'export_path' in blueprint.collection else None
+                # add their material path
+                materials_exported_path = blueprint.collection['materials_path'] if 'materials_path' in blueprint.collection else None
+                auto_assets.append({"name": blueprint.name+"_material", "path": materials_exported_path})#, "generated": True, "internal":blueprint.local, "parent": None})
+
+
             if blueprint_exported_path is not None: # and not does_asset_exist(assets_list, blueprint_exported_path):
                 auto_assets.append({"name": blueprint.name, "path": blueprint_exported_path})#, "generated": True, "internal":blueprint.local, "parent": None})
 
@@ -80,7 +85,7 @@ def export_main_scene(scene, settings, blueprints_data):
         materials_library_name = f"{current_project_name}_materials"
         materials_exported_path = os.path.join(materials_path, f"{materials_library_name}{export_gltf_extension}")
         material_assets = [{"name": materials_library_name, "path": materials_exported_path}] # we also add the material library as an asset
-
+        print("material_assets", material_assets, "extension", export_gltf_extension)
         scene["BlueprintAssets"] = assets_to_fake_ron(all_assets + [{"name": asset.name, "path": asset.path} for asset in scene.user_assets] + auto_assets + material_assets)
         #scene["BlueprintAssets"] = assets_to_fake_ron([{'name':'foo', 'path':'bar'}])
 

tools/blenvy/assets/assets_scan.py

@@ -62,7 +62,7 @@ def get_userTextures():
 
 def get_blueprint_assets_tree(blueprint, blueprints_data, parent, settings):
     blueprints_path = getattr(settings, "blueprints_path")
-    export_gltf_extension = getattr(settings.auto_export, "export_gltf_extension", ".glb")
+    export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
     assets_list = []
     
 
@@ -91,7 +91,7 @@ def get_blueprint_assets_tree(blueprint, blueprints_data, parent, settings):
 
 def get_main_scene_assets_tree(main_scene, blueprints_data, settings):
     blueprints_path =  getattr(settings, "blueprints_path")
-    export_gltf_extension = getattr(settings.auto_export, "export_gltf_extension", ".glb")
+    export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
     blueprint_instance_names_for_scene = blueprints_data.blueprint_instances_per_main_scene.get(main_scene.name, None)
 
     assets_list = get_user_assets_as_list(main_scene)
@@ -123,7 +123,7 @@ def get_main_scene_assets_tree(main_scene, blueprints_data, settings):
 
 def get_blueprint_asset_tree(blueprint, blueprints_data, settings):
     blueprints_path =  getattr(settings, "blueprints_path")
-    export_gltf_extension = getattr(settings.auto_export, "export_gltf_extension", ".glb")
+    export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
 
     assets_list = get_user_assets_as_list(blueprint.collection)
 

tools/blenvy/blueprints/blueprint_helpers.py

@@ -2,6 +2,8 @@
 import os
 import json
 import bpy
+from pathlib import Path
+
 from ..core.scene_helpers import add_scene_property
 
 def find_blueprints_not_on_disk(blueprints, folder_path, extension):
@@ -19,12 +21,23 @@ def check_if_blueprint_on_disk(scene_name, folder_path, extension):
     found = os.path.exists(gltf_output_path) and os.path.isfile(gltf_output_path)
     return found
 
-def inject_export_path_into_internal_blueprints(internal_blueprints, blueprints_path, gltf_extension):
+def inject_export_path_into_internal_blueprints(internal_blueprints, blueprints_path, gltf_extension, settings):
+    export_materials_library = getattr(settings.auto_export, "export_materials_library")
+    # FIXME: duplicate of materials stuff
+    export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
+    materials_path =  getattr(settings, "materials_path")
+    current_project_name = Path(bpy.context.blend_data.filepath).stem
+    materials_library_name = f"{current_project_name}_materials"
+    materials_exported_path = os.path.join(materials_path, f"{materials_library_name}{export_gltf_extension}")
+
     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
+
 
 def inject_blueprints_list_into_main_scene(scene, blueprints_data, settings):
     project_root_path = getattr(settings, "project_root_path")

tools/blenvy/materials/materials_helpers.py

@@ -34,7 +34,7 @@ def get_all_materials(collection_names, library_scenes):
 
 def add_material_info_to_objects(materials_per_object, settings):
     materials_path =  getattr(settings, "materials_path")
-    export_gltf_extension = getattr(settings.auto_export, "export_gltf_extension", ".glb")
+    export_gltf_extension = getattr(settings, "export_gltf_extension", ".glb")
 
     current_project_name = Path(bpy.context.blend_data.filepath).stem
     materials_library_name = f"{current_project_name}_materials"

tools/blenvy/tests/test_bevy_integration.py

@@ -122,9 +122,13 @@ def test_export_complex(setup_data):
     user_asset.path = "audio/fake.mp3"
 
     # we have to cheat, since we cannot rely on the data injected when saving the library file (since we are not saving it as part of the tests)
-    #bpy.data.collections["External_blueprint"]["export_path"] = "blueprints/External_blueprint.glb"
+    bpy.data.collections["External_blueprint"]["export_path"] = "blueprints/External_blueprint.glb"
-    #bpy.data.collections["External_blueprint2"]["export_path"] = "blueprints/External_blueprint2.glb"
+    bpy.data.collections["External_blueprint2"]["export_path"] = "blueprints/External_blueprint2.glb"
-    #bpy.data.collections["External_blueprint3"]["export_path"] = "blueprints/External_blueprint3.glb"
+    bpy.data.collections["External_blueprint3"]["export_path"] = "blueprints/External_blueprint3.glb"
+
+    bpy.data.collections["External_blueprint"]["materials_path"] = "materials/testing_library_materials.glb"
+    bpy.data.collections["External_blueprint2"]["materials_path"] = "materials/testing_library_materials.glb"
+    bpy.data.collections["External_blueprint3"]["materials_path"] = "materials/testing_library_materials.glb"
 
     # do the actual exporting
     prepare_and_export()

tools/blenvy/tests/test_bevy_integration_simple.py

@@ -80,6 +80,7 @@ def test_export_complex(setup_data):
     export_props = {
     }
     gltf_settings = {
+        "export_format":"GLTF_SEPARATE",
         "export_animations": True,
         "export_optimize_animation_size": False,
         "export_apply":True