feat(Blenvy:Blender): started upgrading code relevant to save/load, dynamic entities etc

* using some of the newer components api to determine if an object/its collection is dynamic or not

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

@@ -1,12 +1,14 @@
 import bpy
 
+from ...bevy_components.components.metadata import get_bevy_component_value_by_long_name
 
 # checks if an object is dynamic
 # TODO: for efficiency, it might make sense to write this flag semi automatically at the root level of the object so we can skip the inner loop
 # TODO: we need to recompute these on blueprint changes too
 # even better, keep a list of dynamic objects per scene , updated only when needed ?
 def is_object_dynamic(object):
-    is_dynamic =  object['Dynamic'] if 'Dynamic' in object else False
+    is_dynamic = get_bevy_component_value_by_long_name(object, 'blenvy::save_load::Dynamic') is not None
+    #is_dynamic =  object['Dynamic'] if 'Dynamic' in object else False
     # only look for data in the original collection if it is not alread marked as dynamic at instance level
     if not is_dynamic and object.type == 'EMPTY' and hasattr(object, 'instance_collection') and object.instance_collection is not None :
         #print("collection", object.instance_collection, "object", object.name)
@@ -14,15 +16,18 @@ def is_object_dynamic(object):
         collection_name = object.instance_collection.name
         original_collection = bpy.data.collections[collection_name]
 
+        is_dynamic = get_bevy_component_value_by_long_name(original_collection, 'blenvy::save_load::Dynamic') is not None
         # scan original collection, look for a 'Dynamic' flag
-        for object in original_collection.objects:
+        """for object in original_collection.objects:
             #print(" inner", object)
-            if object.type == 'EMPTY' and object.name.endswith("components"):
+            if object.type == 'EMPTY': #and object.name.endswith("components"):
                 for component_name in object.keys():
                     #print("   compo", component_name)
                     if component_name == 'Dynamic':
                         is_dynamic = True
-                        break
+                        break"""
+    print("IS OBJECT DYNAMIC", object, is_dynamic)
+
     return is_dynamic
 
 def is_object_static(object):

tools/blenvy/add_ons/auto_export/materials/export_materials.py

@@ -1,10 +1,8 @@
 import os
 import bpy
-from pathlib import Path
 
 from blenvy.core.helpers_collections import (traverse_tree)
 from blenvy.core.object_makers import make_cube
-from blenvy.materials.materials_helpers import add_material_info_to_objects, get_all_materials
 from ..common.generate_temporary_scene_and_export import generate_temporary_scene_and_export
 from ..common.export_gltf import (generate_gltf_export_settings)