fix: annotation lock

Resolve "Optimize user selection draw code"

See merge request slumber/multi-user!142

.gitignore

@@ -14,3 +14,4 @@ _build
 
 # ignore generated zip generated from blender_addon_tester
 *.zip
+libs

.gitlab/ci/build.gitlab-ci.yml

@@ -8,3 +8,5 @@ build:
     name: multi_user
     paths: 
      - multi_user
+  variables:
+    GIT_SUBMODULE_STRATEGY: recursive

.gitlab/ci/deploy.gitlab-ci.yml

@@ -5,6 +5,7 @@ deploy:
   variables:
     DOCKER_DRIVER: overlay2
     DOCKER_TLS_CERTDIR: "/certs"
+    GIT_SUBMODULE_STRATEGY: recursive
   
   services:
   - docker:19.03.12-dind

.gitlab/ci/test.gitlab-ci.yml

@@ -3,3 +3,5 @@ test:
   image: slumber/blender-addon-testing:latest
   script:
     - python3 scripts/test_addon.py
+  variables:
+    GIT_SUBMODULE_STRATEGY: recursive

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "multi_user/libs/replication"]
+	path = multi_user/libs/replication
+	url = https://gitlab.com/slumber/replication.git

README.md

@@ -32,32 +32,32 @@ Currently, not all data-block are supported for replication over the wire. The f
 | Name           | Status |                           Comment                            |
 | -------------- | :----: | :----------------------------------------------------------: |
 | action         |   ✔️    |                                                              |
-| armature       |   ❗    |                          Not stable                          |
 | camera         |   ✔️    |                                                              |
 | collection     |   ✔️    |                                                              |
-| curve          |   ❗    |                 Nurbs surfaces not supported                 |
 | gpencil        |   ✔️    |                                                              |
 | image          |   ✔️    |                                                              |
 | mesh           |   ✔️    |                                                              |
 | material       |   ✔️    |                                                              |
-| node_groups    |   ❗    |                   Material & Geometry only                   |
+| node_groups    |   ✔️    |                   Material & Geometry only                   |
 | geometry nodes |   ✔️    |                                                              |
 | metaball       |   ✔️    |                                                              |
 | object         |   ✔️    |                                                              |
-| textures       |   ❗    |       Supported for modifiers/materials/geo nodes only       |
 | texts          |   ✔️    |                                                              |
 | scene          |   ✔️    |                                                              |
 | world          |   ✔️    |                                                              |
-| lightprobes    |   ✔️    |                                                              |
-| compositing    |   ❌    | [Planned](https://gitlab.com/slumber/multi-user/-/issues/46) |
-| texts          |   ❌    | [Planned](https://gitlab.com/slumber/multi-user/-/issues/81) |
-| nla            |   ❌    |                                                              |
 | volumes        |   ✔️    |                                                              |
+| lightprobes    |   ✔️    |                                                              |
+| physics        |   ✔️    |                                                              |
+| curve          |   ❗    |                 Nurbs surfaces not supported                 |
+| textures       |   ❗    |       Supported for modifiers/materials/geo nodes only       |
+| armature       |   ❗    |                          Not stable                          |
 | particles      |   ❗    |                   The cache isn't syncing.                   |
 | speakers       |   ❗    | [Partial](https://gitlab.com/slumber/multi-user/-/issues/65) |
 | vse            |   ❗    |               Mask and Clip not supported yet                |
-| physics        |   ❌    | [Planned](https://gitlab.com/slumber/multi-user/-/issues/45) |
 | libraries      |   ❗    |                           Partial                            |
+| nla            |   ❌    |                                                              |
+| texts          |   ❌    | [Planned](https://gitlab.com/slumber/multi-user/-/issues/81) |
+| compositing    |   ❌    | [Planned](https://gitlab.com/slumber/multi-user/-/issues/46) |
 
 
 

docs/conf.py

@@ -19,10 +19,10 @@ import sys
 
 project = 'multi-user'
 copyright = '2020, Swann Martinez'
-author = 'Swann Martinez, with contributions from Poochy'
+author = 'Swann Martinez, Poochy, Fabian'
 
 # The full version, including alpha/beta/rc tags
-release = '0.2.0'
+release = '0.5.0-develop'
 
 
 # -- General configuration ---------------------------------------------------

multi_user/__init__.py

@@ -19,7 +19,7 @@
 bl_info = {
     "name": "Multi-User",
     "author": "Swann Martinez",
-    "version": (0, 4, 0),
+    "version": (0, 5, 0),
     "description": "Enable real-time collaborative workflow inside blender",
     "blender": (2, 82, 0),
     "location": "3D View > Sidebar > Multi-User tab",
@@ -43,13 +43,10 @@ from bpy.app.handlers import persistent
 from . import environment
 
 
-DEPENDENCIES = {
-    ("replication", '0.1.36'),
-}
-
-
 module_error_msg = "Insufficient rights to install the multi-user \
                 dependencies, aunch blender with administrator rights."
+
+
 def register():
     # Setup logging policy
     logging.basicConfig(
@@ -58,15 +55,11 @@ def register():
         level=logging.INFO)
 
     try:
-        if bpy.app.version[1] >= 91:
+        environment.register()
-            python_binary_path = sys.executable
-        else:
-            python_binary_path = bpy.app.binary_path_python
-
-        environment.setup(DEPENDENCIES, python_binary_path)
 
         from . import presence
         from . import operators
+        from . import handlers
         from . import ui
         from . import preferences
         from . import addon_updater_ops
@@ -75,6 +68,7 @@ def register():
         addon_updater_ops.register(bl_info)
         presence.register()
         operators.register()
+        handlers.register()
         ui.register()
     except ModuleNotFoundError as e:
         raise Exception(module_error_msg)
@@ -95,6 +89,7 @@ def register():
 def unregister():
     from . import presence
     from . import operators
+    from . import handlers
     from . import ui
     from . import preferences
     from . import addon_updater_ops
@@ -104,6 +99,7 @@ def unregister():
     presence.unregister()
     addon_updater_ops.unregister()
     ui.unregister()
+    handlers.unregister()
     operators.unregister()
     preferences.unregister()
 
@@ -111,3 +107,5 @@ def unregister():
     del bpy.types.ID.uuid
     del bpy.types.WindowManager.online_users
     del bpy.types.WindowManager.user_index
+
+    environment.unregister()

multi_user/addon_updater.py

@@ -1688,10 +1688,7 @@ class GitlabEngine(object):
 		# Could clash with tag names and if it does, it will
 		# download TAG zip instead of branch zip to get
 		# direct path, would need.
-		return "{}{}{}".format(
+		return f"https://gitlab.com/slumber/multi-user/-/jobs/artifacts/{branch}/download?job=build"
-			self.form_repo_url(updater),
-			"/repository/archive.zip?sha=",
-			branch)
 
 	def get_zip_url(self, sha, updater):
 		return "{base}/repository/archive.zip?sha={sha}".format(

multi_user/bl_types/__init__.py

@@ -28,7 +28,6 @@ __all__ = [
     'bl_light',
     'bl_scene',
     'bl_material',
-    'bl_library',
     'bl_armature',
     'bl_action',
     'bl_world',
@@ -39,7 +38,6 @@ __all__ = [
     'bl_font',
     'bl_sound',
     'bl_file',
-    # 'bl_sequencer',
     'bl_node_group',
     'bl_texture',
     "bl_particle",
@@ -49,8 +47,18 @@ if bpy.app.version[1] >= 91:
     __all__.append('bl_volume')
 
 from . import *
-from replication.data import DataTranslationProtocol
 
 def types_to_register():
     return __all__
 
+from replication.protocol import DataTranslationProtocol
+
+def get_data_translation_protocol()-> DataTranslationProtocol:
+    """ Return a data translation protocol from implemented bpy types
+    """
+    bpy_protocol = DataTranslationProtocol()
+    for module_name in __all__:
+        impl  = globals().get(module_name)
+        if impl and hasattr(impl, "_type") and hasattr(impl, "_type"):
+            bpy_protocol.register_implementation(impl._type, impl._class)
+    return bpy_protocol

multi_user/bl_types/bl_action.py

@@ -25,8 +25,8 @@ from enum import Enum
 from .. import utils
 from .dump_anything import (
     Dumper, Loader, np_dump_collection, np_load_collection, remove_items_from_dict)
-from .bl_datablock import BlDatablock, has_action, has_driver, dump_driver, load_driver
+from replication.protocol import ReplicatedDatablock
-
+from .bl_datablock import resolve_datablock_from_uuid
 
 KEYFRAME = [
     'amplitude',
@@ -41,6 +41,66 @@ KEYFRAME = [
     'interpolation',
 ]
 
+def has_action(datablock):
+    """ Check if the datablock datablock has actions
+    """
+    return (hasattr(datablock, 'animation_data')
+            and datablock.animation_data
+            and datablock.animation_data.action)
+
+
+def has_driver(datablock):
+    """ Check if the datablock datablock is driven
+    """
+    return (hasattr(datablock, 'animation_data')
+            and datablock.animation_data
+            and datablock.animation_data.drivers)
+
+
+def dump_driver(driver):
+    dumper = Dumper()
+    dumper.depth = 6
+    data = dumper.dump(driver)
+
+    return data
+
+
+def load_driver(target_datablock, src_driver):
+    loader = Loader()
+    drivers = target_datablock.animation_data.drivers
+    src_driver_data = src_driver['driver']
+    new_driver = drivers.new(src_driver['data_path'], index=src_driver['array_index'])
+
+    # Settings
+    new_driver.driver.type = src_driver_data['type']
+    new_driver.driver.expression = src_driver_data['expression']
+    loader.load(new_driver,  src_driver)
+
+    # Variables
+    for src_variable in src_driver_data['variables']:
+        src_var_data = src_driver_data['variables'][src_variable]
+        new_var = new_driver.driver.variables.new()
+        new_var.name = src_var_data['name']
+        new_var.type = src_var_data['type']
+
+        for src_target in src_var_data['targets']:
+            src_target_data = src_var_data['targets'][src_target]
+            src_id = src_target_data.get('id')
+            if src_id:
+                new_var.targets[src_target].id = utils.resolve_from_id(src_target_data['id'], src_target_data['id_type'])
+            loader.load(new_var.targets[src_target],  src_target_data)
+
+    # Fcurve
+    new_fcurve = new_driver.keyframe_points
+    for p in reversed(new_fcurve):
+        new_fcurve.remove(p, fast=True)
+
+    new_fcurve.add(len(src_driver['keyframe_points']))
+
+    for index, src_point in enumerate(src_driver['keyframe_points']):
+        new_point = new_fcurve[index]
+        loader.load(new_point, src_driver['keyframe_points'][src_point])
+
 
 def dump_fcurve(fcurve: bpy.types.FCurve, use_numpy: bool = True) -> dict:
     """ Dump a sigle curve to a dict
@@ -159,7 +219,7 @@ def load_fcurve(fcurve_data, fcurve):
 def dump_animation_data(datablock):
     animation_data = {}
     if has_action(datablock):
-            animation_data['action'] = datablock.animation_data.action.name
+        animation_data['action'] = datablock.animation_data.action.uuid
     if has_driver(datablock):
         animation_data['drivers'] = []
         for driver in datablock.animation_data.drivers:
@@ -181,8 +241,10 @@ def load_animation_data(animation_data, datablock):
             for driver in animation_data['drivers']:
                 load_driver(datablock, driver)
 
-        if 'action' in animation_data:
+        action = animation_data.get('action')
-            datablock.animation_data.action = bpy.data.actions[animation_data['action']]
+        if action:
+            action = resolve_datablock_from_uuid(action, bpy.data.actions)
+            datablock.animation_data.action = action
         elif datablock.animation_data.action:
             datablock.animation_data.action = None
 
@@ -198,26 +260,30 @@ def resolve_animation_dependencies(datablock):
         return []
 
 
-class BlAction(BlDatablock):
+class BlAction(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "actions"
     bl_class = bpy.types.Action
     bl_check_common = False
     bl_icon = 'ACTION_TWEAK'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.actions.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         for dumped_fcurve in data["fcurves"]:
             dumped_data_path = dumped_fcurve["data_path"]
             dumped_array_index = dumped_fcurve["dumped_array_index"]
 
             # create fcurve if needed
-            fcurve = target.fcurves.find(
+            fcurve = datablock.fcurves.find(
                 dumped_data_path, index=dumped_array_index)
             if fcurve is None:
-                fcurve = target.fcurves.new(
+                fcurve = datablock.fcurves.new(
                     dumped_data_path, index=dumped_array_index)
 
             load_fcurve(dumped_fcurve, fcurve)
@@ -225,9 +291,10 @@ class BlAction(BlDatablock):
         id_root = data.get('id_root')
 
         if id_root:
-            target.id_root = id_root
+            datablock.id_root = id_root
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         dumper.exclude_filter = [
             'name_full',
@@ -242,11 +309,23 @@ class BlAction(BlDatablock):
             'users'
         ]
         dumper.depth = 1
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
         data["fcurves"] = []
 
-        for fcurve in instance.fcurves:
+        for fcurve in datablock.fcurves:
             data["fcurves"].append(dump_fcurve(fcurve, use_numpy=True))
 
         return data
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.actions)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        return []
+
+_type = bpy.types.Action
+_class = BlAction

multi_user/bl_types/bl_armature.py

@@ -22,8 +22,9 @@ import mathutils
 
 from .dump_anything import Loader, Dumper
 from .. import presence, operators, utils
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
-
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 def get_roll(bone: bpy.types.Bone) -> float:
     """ Compute the actuall roll of a pose bone
@@ -35,17 +36,21 @@ def get_roll(bone: bpy.types.Bone) -> float:
     return bone.AxisRollFromMatrix(bone.matrix_local.to_3x3())[1]
 
 
-class BlArmature(BlDatablock):
+class BlArmature(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "armatures"
     bl_class = bpy.types.Armature
     bl_check_common = False
     bl_icon = 'ARMATURE_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.armatures.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         # Load parent object
         parent_object = utils.find_from_attr(
             'uuid',
@@ -55,7 +60,7 @@ class BlArmature(BlDatablock):
 
         if parent_object is None:
             parent_object = bpy.data.objects.new(
-                data['user_name'], target)
+                data['user_name'], datablock)
             parent_object.uuid = data['user']
 
         is_object_in_master = (
@@ -90,10 +95,10 @@ class BlArmature(BlDatablock):
         bpy.ops.object.mode_set(mode='EDIT')
 
         for bone in data['bones']:
-            if bone not in target.edit_bones:
+            if bone not in datablock.edit_bones:
-                new_bone = target.edit_bones.new(bone)
+                new_bone = datablock.edit_bones.new(bone)
             else:
-                new_bone = target.edit_bones[bone]
+                new_bone = datablock.edit_bones[bone]
 
             bone_data = data['bones'].get(bone)
 
@@ -104,7 +109,7 @@ class BlArmature(BlDatablock):
             new_bone.roll =  bone_data['roll']
             
             if 'parent' in bone_data:
-                new_bone.parent = target.edit_bones[data['bones']
+                new_bone.parent = datablock.edit_bones[data['bones']
                                                     [bone]['parent']]
                 new_bone.use_connect = bone_data['use_connect']
 
@@ -119,9 +124,10 @@ class BlArmature(BlDatablock):
         if 'EDIT' in current_mode:
             bpy.ops.object.mode_set(mode='EDIT')
 
-    def _dump_implementation(self, data, instance=None):
+        load_animation_data(data.get('animation_data'), datablock)
-        assert(instance)
 
+    @staticmethod
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         dumper.depth = 4
         dumper.include_filter = [
@@ -135,14 +141,14 @@ class BlArmature(BlDatablock):
             'name',
             'layers',
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
-        for bone in instance.bones:
+        for bone in datablock.bones:
             if bone.parent:
                 data['bones'][bone.name]['parent'] = bone.parent.name
         # get the parent Object
         # TODO: Use id_data instead
-        object_users = utils.get_datablock_users(instance)[0]
+        object_users = utils.get_datablock_users(datablock)[0]
         data['user'] = object_users.uuid
         data['user_name'] = object_users.name
 
@@ -153,7 +159,25 @@ class BlArmature(BlDatablock):
         data['user_scene'] = [
             item.name for item in container_users if isinstance(item, bpy.types.Scene)]
 
-        for bone in instance.bones:
+        for bone in datablock.bones:
             data['bones'][bone.name]['roll'] = get_roll(bone)
 
+        data['animation_data'] = dump_animation_data(datablock)
         return data
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        name = data.get('name')
+        datablock = resolve_datablock_from_uuid(uuid, bpy.data.armatures)
+        if datablock is None:
+            datablock = bpy.data.armatures.get(name)
+
+        return datablock
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        return resolve_animation_dependencies(datablock)
+
+_type = bpy.types.Armature
+_class = BlArmature

multi_user/bl_types/bl_camera.py

@@ -20,39 +20,48 @@ import bpy
 import mathutils
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 
-class BlCamera(BlDatablock):
+class BlCamera(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "cameras"
     bl_class = bpy.types.Camera
     bl_check_common = False
     bl_icon = 'CAMERA_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.cameras.new(data["name"])
 
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()       
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         dof_settings = data.get('dof')
 
+        load_animation_data(data.get('animation_data'), datablock)
+
         # DOF settings
         if dof_settings:
-            loader.load(target.dof, dof_settings)
+            loader.load(datablock.dof, dof_settings)
 
         background_images = data.get('background_images')
 
-        target.background_images.clear()
+        datablock.background_images.clear()
-        
+        # TODO: Use image uuid
         if background_images:
             for img_name, img_data in background_images.items():
                 img_id = img_data.get('image')
                 if img_id:
-                    target_img = target.background_images.new()
+                    target_img = datablock.background_images.new()
                     target_img.image = bpy.data.images[img_id]
                     loader.load(target_img, img_data)
 
@@ -61,11 +70,8 @@ class BlCamera(BlDatablock):
                         loader.load(target_img.image_user, img_user)
 
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
-        # TODO: background image support
-        
         dumper = Dumper()
         dumper.depth = 3
         dumper.include_filter = [
@@ -114,15 +120,29 @@ class BlCamera(BlDatablock):
             'use_cyclic',
             'use_auto_refresh'
         ]
-        data =  dumper.dump(instance)
+        data =  dumper.dump(datablock)
-        for index, image in enumerate(instance.background_images):
+        data['animation_data'] = dump_animation_data(datablock)
+
+        for index, image in enumerate(datablock.background_images):
             if image.image_user:
                 data['background_images'][index]['image_user'] = dumper.dump(image.image_user)
         return data
-    def _resolve_deps_implementation(self):
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.cameras)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
-        for background in self.instance.background_images:
+        for background in datablock.background_images:
             if background.image:
                 deps.append(background.image)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
+
+_type = bpy.types.Camera
+_class = BlCamera

multi_user/bl_types/bl_collection.py

@@ -19,10 +19,12 @@
 import bpy
 import mathutils
 
-from .. import utils
+from deepdiff import DeepDiff, Delta
-from .bl_datablock import BlDatablock
-from .dump_anything import Loader, Dumper
 
+from .. import utils
+from replication.protocol import ReplicatedDatablock
+from .dump_anything import Loader, Dumper
+from .bl_datablock import resolve_datablock_from_uuid
 
 def dump_collection_children(collection):
     collection_children = []
@@ -81,58 +83,82 @@ def resolve_collection_dependencies(collection):
 
     return deps
 
-class BlCollection(BlDatablock):
+class BlCollection(ReplicatedDatablock):
     bl_id = "collections"
     bl_icon = 'FILE_FOLDER'
     bl_class = bpy.types.Collection
     bl_check_common = True
     bl_reload_parent = False
 
-    def _construct(self, data):
+    use_delta = True
-        if self.is_library:
-            with bpy.data.libraries.load(filepath=bpy.data.libraries[self.data['library']].filepath, link=True) as (sourceData, targetData):
-                targetData.collections = [
-                    name for name in sourceData.collections if name == self.data['name']]
-
-            instance = bpy.data.collections[self.data['name']]
-
-            return instance
 
+    @staticmethod
+    def construct(data: dict) -> object:
         instance = bpy.data.collections.new(data["name"])
         return instance
 
-    def _load_implementation(self, data, target):
+
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         # Objects
-        load_collection_objects(data['objects'], target)
+        load_collection_objects(data['objects'], datablock)
 
         # Link childrens
-        load_collection_childrens(data['children'], target)
+        load_collection_childrens(data['children'], datablock)
 
         # FIXME: Find a better way after the replication big refacotoring
         # Keep other user from deleting collection object by flushing their history
         utils.flush_history()
 
-    def _dump_implementation(self, data, instance=None):
-        assert(instance)
 
+    @staticmethod
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
             "name",
             "instance_offset"
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
         # dump objects
-        data['objects'] = dump_collection_objects(instance)
+        data['objects'] = dump_collection_objects(datablock)
 
         # dump children collections
-        data['children'] = dump_collection_children(instance)
+        data['children'] = dump_collection_children(datablock)
 
         return data
 
-    def _resolve_deps_implementation(self):
+
-        return resolve_collection_dependencies(self.instance)
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return  resolve_datablock_from_uuid(uuid, bpy.data.collections)
+
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        return resolve_collection_dependencies(datablock)
+
+    @staticmethod
+    def compute_delta(last_data: dict, current_data: dict) -> Delta:
+        diff_params = {
+            'ignore_order': True,
+            'report_repetition': True
+        }
+        delta_params = {
+            # 'mutate': True
+        }
+
+        return Delta(
+            DeepDiff(last_data,
+                     current_data,
+                     cache_size=5000,
+                     **diff_params),
+            **delta_params)
+
+_type = bpy.types.Collection
+_class = BlCollection

multi_user/bl_types/bl_curve.py

@@ -21,13 +21,15 @@ import bpy.types as T
 import mathutils
 import logging
 
-from .. import utils
+from ..utils import get_preferences
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .dump_anything import (Dumper, Loader,
                             np_load_collection,
                             np_dump_collection)
-from .bl_datablock import get_datablock_from_uuid
 from .bl_material import dump_materials_slots, load_materials_slots
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+
 
 SPLINE_BEZIER_POINT = [
     # "handle_left_type",
@@ -134,25 +136,31 @@ SPLINE_METADATA = [
 ]
 
 
-class BlCurve(BlDatablock):
+class BlCurve(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "curves"
     bl_class = bpy.types.Curve
     bl_check_common = False
     bl_icon = 'CURVE_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.curves.new(data["name"], data["type"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        loader = Loader()
+    def load(data: dict, datablock: object):
-        loader.load(target, data)
+        load_animation_data(data.get('animation_data'), datablock)
 
-        target.splines.clear()
+        loader = Loader()
+        loader.load(datablock, data)
+
+        datablock.splines.clear()
 
         # load splines
         for spline in data['splines'].values():
-            new_spline = target.splines.new(spline['type'])
+            new_spline = datablock.splines.new(spline['type'])
 
             # Load curve geometry data
             if new_spline.type == 'BEZIER':
@@ -173,15 +181,14 @@ class BlCurve(BlDatablock):
             # MATERIAL SLOTS
             src_materials = data.get('materials', None)
             if src_materials:
-                load_materials_slots(src_materials, target.materials)
+                load_materials_slots(src_materials, datablock.materials)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         # Conflicting attributes
         # TODO: remove them with the NURBS support
         dumper.include_filter = CURVE_METADATA
-
         dumper.exclude_filter = [
             'users',
             'order_u',
@@ -190,14 +197,16 @@ class BlCurve(BlDatablock):
             'point_count_u',
             'active_textbox'
         ]
-        if instance.use_auto_texspace:
+        if datablock.use_auto_texspace:
             dumper.exclude_filter.extend([
                 'texspace_location',
                 'texspace_size'])
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
+
+        data['animation_data'] = dump_animation_data(datablock)
         data['splines'] = {}
 
-        for index, spline in enumerate(instance.splines):
+        for index, spline in enumerate(datablock.splines):
             dumper.depth = 2
             dumper.include_filter = SPLINE_METADATA
             spline_data = dumper.dump(spline)
@@ -211,21 +220,27 @@ class BlCurve(BlDatablock):
                 spline.bezier_points, SPLINE_BEZIER_POINT)
             data['splines'][index] = spline_data
 
-        if isinstance(instance, T.SurfaceCurve):
+        if isinstance(datablock, T.SurfaceCurve):
             data['type'] = 'SURFACE'
-        elif isinstance(instance, T.TextCurve):
+        elif isinstance(datablock, T.TextCurve):
             data['type'] = 'FONT'
-        elif isinstance(instance, T.Curve):
+        elif isinstance(datablock, T.Curve):
             data['type'] = 'CURVE'
 
-        data['materials'] = dump_materials_slots(instance.materials)
+        data['materials'] = dump_materials_slots(datablock.materials)
 
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.curves)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         # TODO: resolve material
         deps = []
-        curve = self.instance
+        curve = datablock
 
         if isinstance(curve, T.TextCurve):
             deps.extend([
@@ -234,15 +249,19 @@ class BlCurve(BlDatablock):
                 curve.font_bold_italic,
                 curve.font_italic])
 
-        for material in self.instance.materials:
+        for material in datablock.materials:
             if material:
                 deps.append(material)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-    def diff(self):
+    @staticmethod
-        if 'EDIT' in bpy.context.mode \
+    def needs_update(datablock: object, data: dict) -> bool:
-                and not self.preferences.sync_flags.sync_during_editmode:
+        return 'EDIT' not in bpy.context.mode \
-            return False
+            or get_preferences().sync_flags.sync_during_editmode
-        else:
+
-            return super().diff()
+
+_type = [bpy.types.Curve, bpy.types.TextCurve]
+_class = BlCurve

multi_user/bl_types/bl_datablock.py

@@ -22,73 +22,11 @@ from collections.abc import Iterable
 import bpy
 import mathutils
 from replication.constants import DIFF_BINARY, DIFF_JSON, UP
-from replication.data import ReplicatedDatablock
+from replication.protocol import ReplicatedDatablock
 
 from .. import utils
 from .dump_anything import Dumper, Loader
 
-
-def has_action(target):
-    """ Check if the target datablock has actions
-    """
-    return (hasattr(target, 'animation_data')
-            and target.animation_data
-            and target.animation_data.action)
-
-
-def has_driver(target):
-    """ Check if the target datablock is driven
-    """
-    return (hasattr(target, 'animation_data')
-            and target.animation_data
-            and target.animation_data.drivers)
-
-
-def dump_driver(driver):
-    dumper = Dumper()
-    dumper.depth = 6
-    data = dumper.dump(driver)
-
-    return data
-
-
-def load_driver(target_datablock, src_driver):
-    loader = Loader()
-    drivers = target_datablock.animation_data.drivers
-    src_driver_data = src_driver['driver']
-    new_driver = drivers.new(src_driver['data_path'], index=src_driver['array_index'])
-
-    # Settings
-    new_driver.driver.type = src_driver_data['type']
-    new_driver.driver.expression = src_driver_data['expression']
-    loader.load(new_driver,  src_driver)
-
-    # Variables
-    for src_variable in src_driver_data['variables']:
-        src_var_data = src_driver_data['variables'][src_variable]
-        new_var = new_driver.driver.variables.new()
-        new_var.name = src_var_data['name']
-        new_var.type = src_var_data['type']
-
-        for src_target in src_var_data['targets']:
-            src_target_data = src_var_data['targets'][src_target]
-            src_id = src_target_data.get('id')
-            if src_id:
-                new_var.targets[src_target].id = utils.resolve_from_id(src_target_data['id'], src_target_data['id_type'])
-            loader.load(new_var.targets[src_target],  src_target_data)
-
-    # Fcurve
-    new_fcurve = new_driver.keyframe_points
-    for p in reversed(new_fcurve):
-        new_fcurve.remove(p, fast=True)
-
-    new_fcurve.add(len(src_driver['keyframe_points']))
-
-    for index, src_point in enumerate(src_driver['keyframe_points']):
-        new_point = new_fcurve[index]
-        loader.load(new_point, src_driver['keyframe_points'][src_point])
-
-
 def get_datablock_from_uuid(uuid, default, ignore=[]):
     if not uuid:
         return default
@@ -100,133 +38,8 @@ def get_datablock_from_uuid(uuid, default, ignore=[]):
                     return item
     return default
 
-
+def resolve_datablock_from_uuid(uuid, bpy_collection):
-class BlDatablock(ReplicatedDatablock):
+    for item in bpy_collection:
-    """BlDatablock
+        if getattr(item, 'uuid', None) == uuid:
-
+            return item
-        bl_id :             blender internal storage identifier
+    return None
-        bl_class :          blender internal type
-        bl_icon :           type icon (blender icon name) 
-        bl_check_common:    enable check even in common rights
-        bl_reload_parent:   reload parent
-    """
-
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        instance = kwargs.get('instance', None)
-        
-        self.preferences = utils.get_preferences()
-
-        # TODO: use is_library_indirect
-        self.is_library = (instance and hasattr(instance, 'library') and
-                           instance.library) or \
-            (hasattr(self,'data') and self.data and 'library' in self.data)
-
-        if instance and hasattr(instance, 'uuid'):
-            instance.uuid = self.uuid
-
-    def resolve(self, construct = True):
-        datablock_root = getattr(bpy.data, self.bl_id)
-        datablock_ref = utils.find_from_attr('uuid', self.uuid, datablock_root)
-
-        if not datablock_ref:
-            try:
-                datablock_ref = datablock_root[self.data['name']]
-            except Exception:
-                pass
-
-            if construct and not datablock_ref:
-                name = self.data.get('name')
-                logging.debug(f"Constructing {name}")
-                datablock_ref = self._construct(data=self.data)
-
-        if datablock_ref is not None:
-            setattr(datablock_ref, 'uuid', self.uuid)
-            self.instance = datablock_ref
-            return True
-        else:
-            return False
-        
-
-    def remove_instance(self):
-        """
-        Remove instance from blender data
-        """
-        assert(self.instance)
-
-        datablock_root = getattr(bpy.data, self.bl_id)
-        datablock_root.remove(self.instance)
-
-    def _dump(self, instance=None):
-        dumper = Dumper()
-        data = {}
-        animation_data = {}
-        # Dump animation data
-        if has_action(instance):
-            animation_data['action'] = instance.animation_data.action.name
-        if has_driver(instance):
-            animation_data['drivers'] = []
-            for driver in instance.animation_data.drivers:
-                animation_data['drivers'].append(dump_driver(driver))
-
-        if animation_data:
-            data['animation_data'] = animation_data
-
-        if self.is_library:
-            data.update(dumper.dump(instance))
-        else:
-            data.update(self._dump_implementation(data, instance=instance))
-
-        return data
-
-    def _dump_implementation(self, data, target):
-        raise NotImplementedError
-
-    def _load(self, data, target):
-        # Load animation data
-        if 'animation_data' in data.keys():
-            if target.animation_data is None:
-                target.animation_data_create()
-
-            for d in target.animation_data.drivers:
-                target.animation_data.drivers.remove(d)
-
-            if 'drivers' in data['animation_data']:
-                for driver in data['animation_data']['drivers']:
-                    load_driver(target, driver)
-
-            if 'action' in data['animation_data']:
-                target.animation_data.action = bpy.data.actions[data['animation_data']['action']]
-            elif target.animation_data.action:
-                target.animation_data.action = None
-
-        # Remove existing animation data if there is not more to load
-        elif hasattr(target, 'animation_data') and target.animation_data:
-            target.animation_data_clear()
-
-        if self.is_library:
-            return
-        else:
-            self._load_implementation(data, target)
-
-    def _load_implementation(self, data, target):
-        raise NotImplementedError
-
-    def resolve_deps(self):
-        dependencies = []
-
-        if has_action(self.instance):
-            dependencies.append(self.instance.animation_data.action)
-
-        if not self.is_library:
-            dependencies.extend(self._resolve_deps_implementation())
-
-        logging.debug(f"{self.instance} dependencies: {dependencies}")
-        return dependencies
-
-    def _resolve_deps_implementation(self):
-        return []
-
-    def is_valid(self):
-        return getattr(bpy.data, self.bl_id).get(self.data['name'])

multi_user/bl_types/bl_file.py

@@ -19,14 +19,15 @@
 import logging
 import os
 import sys
-from pathlib import Path
+from pathlib import Path, WindowsPath, PosixPath
 
 import bpy
 import mathutils
 from replication.constants import DIFF_BINARY, UP
-from replication.data import ReplicatedDatablock
+from replication.protocol import ReplicatedDatablock
 
 from .. import utils
+from ..utils import get_preferences
 from .dump_anything import Dumper, Loader
 
 
@@ -58,33 +59,16 @@ class BlFile(ReplicatedDatablock):
     bl_icon = 'FILE'
     bl_reload_parent = True
 
-    def __init__(self, *args, **kwargs):
+    @staticmethod
-        super().__init__(*args, **kwargs)
+    def construct(data: dict) -> object:
-        self.instance = kwargs.get('instance', None)
+        return Path(get_filepath(data['name']))
 
-        if self.instance and not self.instance.exists():
+    @staticmethod
-            raise FileNotFoundError(str(self.instance))
+    def resolve(data: dict) -> object:
+        return Path(get_filepath(data['name']))
 
-        self.preferences = utils.get_preferences()
+    @staticmethod
-
+    def dump(datablock: object) -> dict:
-    def resolve(self, construct = True):
-        self.instance = Path(get_filepath(self.data['name']))
-        
-        file_exists = self.instance.exists()
-        if not file_exists:
-            logging.debug("File don't exist, loading it.")
-            self._load(self.data, self.instance)
-        
-        return file_exists
-
-
-    def push(self, socket, identity=None, check_data=False):
-        super().push(socket, identity=None, check_data=False)
-        
-        if self.preferences.clear_memory_filecache:
-                del self.data['file']
-
-    def _dump(self, instance=None):
         """
         Read the file and return a dict as:
         {
@@ -96,46 +80,62 @@ class BlFile(ReplicatedDatablock):
         logging.info(f"Extracting file metadata")
 
         data = {
-            'name': self.instance.name,
+            'name': datablock.name,
         }
 
-        logging.info(
+        logging.info(f"Reading {datablock.name} content: {datablock.stat().st_size} bytes")
-            f"Reading {self.instance.name} content: {self.instance.stat().st_size} bytes")
 
         try:
-            file = open(self.instance, "rb")
+            file = open(datablock, "rb")
             data['file'] = file.read()
 
             file.close()
         except IOError:
-            logging.warning(f"{self.instance} doesn't exist, skipping")
+            logging.warning(f"{datablock} doesn't exist, skipping")
         else:
             file.close()
 
         return data
 
-    def _load(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         """
         Writing the file
         """
 
         try:
-            file = open(target, "wb")
+            file = open(datablock, "wb")
             file.write(data['file'])
             
-            if self.preferences.clear_memory_filecache:
+            if get_preferences().clear_memory_filecache:
-                del self.data['file']
+                del data['file']
         except IOError:
-            logging.warning(f"{target} doesn't exist, skipping")
+            logging.warning(f"{datablock} doesn't exist, skipping")
         else:
             file.close()
 
-    def diff(self):
+    @staticmethod
-        if self.preferences.clear_memory_filecache:
+    def resolve_deps(datablock: object) -> [object]:
+        return []
+    
+    @staticmethod
+    def needs_update(datablock: object, data:dict)-> bool:
+        if get_preferences().clear_memory_filecache:
             return False
         else:
-            if not self.instance:
+            if not datablock:
+                return None
+
+            if not data:
+                return True
+
+            memory_size = sys.getsizeof(data['file'])-33
+            disk_size = datablock.stat().st_size
+
+            if memory_size != disk_size:
+                return True
+            else:
                 return False
-            memory_size = sys.getsizeof(self.data['file'])-33
+
-            disk_size = self.instance.stat().st_size
+_type = [WindowsPath, PosixPath]
-            return memory_size != disk_size
+_class = BlFile

multi_user/bl_types/bl_font.py

@@ -22,19 +22,20 @@ from pathlib import Path
 
 import bpy
 
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .bl_file import get_filepath, ensure_unpacked
 from .dump_anything import Dumper, Loader
+from .bl_datablock import resolve_datablock_from_uuid
 
-
+class BlFont(ReplicatedDatablock):
-class BlFont(BlDatablock):
     bl_id = "fonts"
     bl_class = bpy.types.VectorFont
     bl_check_common = False
     bl_icon = 'FILE_FONT'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         filename = data.get('filename')
 
         if filename == '<builtin>':
@@ -42,31 +43,43 @@ class BlFont(BlDatablock):
         else:
             return bpy.data.fonts.load(get_filepath(filename))
 
-    def _load(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         pass
 
-    def _dump(self, instance=None):
+    @staticmethod
-        if instance.filepath  == '<builtin>':
+    def dump(datablock: object) -> dict:
+        if datablock.filepath  == '<builtin>':
             filename = '<builtin>'
         else:
-            filename = Path(instance.filepath).name
+            filename = Path(datablock.filepath).name
 
         if not filename:
-            raise FileExistsError(instance.filepath)
+            raise FileExistsError(datablock.filepath)
 
         return {
             'filename': filename,
-            'name': instance.name
+            'name': datablock.name
         }
 
-    def diff(self):
+    @staticmethod
-        return False
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.fonts)
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
-        if self.instance.filepath and self.instance.filepath != '<builtin>':
+        if datablock.filepath and datablock.filepath != '<builtin>':
-            ensure_unpacked(self.instance)
+            ensure_unpacked(datablock)
 
-            deps.append(Path(bpy.path.abspath(self.instance.filepath)))
+            deps.append(Path(bpy.path.abspath(datablock.filepath)))
 
         return deps
+
+    @staticmethod
+    def needs_update(datablock: object, data:dict)-> bool:
+        return False
+
+_type = bpy.types.VectorFont
+_class = BlFont

multi_user/bl_types/bl_gpencil.py

@@ -24,10 +24,12 @@ from .dump_anything import  (Dumper,
                                     Loader,
                                     np_dump_collection,
                                     np_load_collection)
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
-
+from .bl_datablock import resolve_datablock_from_uuid
-# GPencil data api is structured as it follow: 
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
-# GP-Object --> GP-Layers --> GP-Frames --> GP-Strokes --> GP-Stroke-Points
+from ..utils import get_preferences
+from ..timers import is_annotating
+from .bl_material import load_materials_slots, dump_materials_slots
 
 STROKE_POINT = [
     'co',
@@ -64,36 +66,9 @@ def dump_stroke(stroke):
 
         :param stroke: target grease pencil stroke
         :type stroke: bpy.types.GPencilStroke
-        :return: dict
+        :return: (p_count, p_data)
     """
-
+    return (len(stroke.points), np_dump_collection(stroke.points, STROKE_POINT))
-    assert(stroke)
-
-    dumper = Dumper()
-    dumper.include_filter = [
-        "aspect",
-        "display_mode",
-        "draw_cyclic",
-        "end_cap_mode",
-        "hardeness",
-        "line_width",
-        "material_index",
-        "start_cap_mode",
-        "uv_rotation",
-        "uv_scale",
-        "uv_translation",
-        "vertex_color_fill",
-    ]
-    dumped_stroke = dumper.dump(stroke)
-
-    # Stoke points
-    p_count = len(stroke.points)
-    dumped_stroke['p_count'] = p_count
-    dumped_stroke['points'] = np_dump_collection(stroke.points, STROKE_POINT)
-
-    # TODO: uv_factor, uv_rotation
-
-    return dumped_stroke
 
 
 def load_stroke(stroke_data, stroke):
@@ -106,12 +81,13 @@ def load_stroke(stroke_data, stroke):
     """
     assert(stroke and stroke_data)
 
-    stroke.points.add(stroke_data["p_count"])
+    stroke.points.add(stroke_data[0])
-    np_load_collection(stroke_data['points'], stroke.points, STROKE_POINT)
+    np_load_collection(stroke_data[1], stroke.points, STROKE_POINT)
 
     # HACK: Temporary fix to trigger a BKE_gpencil_stroke_geometry_update to 
     # fix fill issues
-    stroke.uv_scale = stroke_data["uv_scale"]
+    stroke.uv_scale = 1.0
+
 
 def dump_frame(frame):
     """ Dump a grease pencil frame to a dict
@@ -145,12 +121,15 @@ def load_frame(frame_data, frame):
 
     assert(frame and frame_data)
 
+    # Load stroke points
     for stroke_data in frame_data['strokes_points']:
         target_stroke = frame.strokes.new()
         load_stroke(stroke_data, target_stroke)
 
+    # Load stroke metadata
     np_load_collection(frame_data['strokes'], frame.strokes, STROKE)
 
+
 def dump_layer(layer):
     """ Dump a grease pencil layer
 
@@ -167,7 +146,6 @@ def dump_layer(layer):
         'opacity',
         'channel_color',
         'color',
-        # 'thickness', #TODO: enabling only for annotation
         'tint_color',
         'tint_factor',
         'vertex_paint_opacity',
@@ -184,7 +162,7 @@ def dump_layer(layer):
         'hide',
         'annotation_hide',
         'lock',
-        # 'lock_frame',
+        'lock_frame',
         # 'lock_material',
         # 'use_mask_layer',
         'use_lights',
@@ -192,12 +170,13 @@ def dump_layer(layer):
         'select',
         'show_points',
         'show_in_front',
+        # 'thickness'
         # 'parent',
         # 'parent_type',
         # 'parent_bone',
         # 'matrix_inverse',
     ]
-    if layer.id_data.is_annotation:
+    if layer.thickness != 0:
         dumper.include_filter.append('thickness')
 
     dumped_layer = dumper.dump(layer)
@@ -228,87 +207,99 @@ def load_layer(layer_data, layer):
         load_frame(frame_data, target_frame)
 
 
-class BlGpencil(BlDatablock):
+def layer_changed(datablock: object, data: dict) -> bool:
+    if datablock.layers.active and \
+            datablock.layers.active.info != data["active_layers"]:
+        return True
+    else:
+        return False
+
+
+def frame_changed(data: dict) -> bool:
+    return bpy.context.scene.frame_current != data["eval_frame"]
+
+class BlGpencil(ReplicatedDatablock):
     bl_id = "grease_pencils"
     bl_class = bpy.types.GreasePencil
     bl_check_common = False
     bl_icon = 'GREASEPENCIL'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.grease_pencils.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        target.materials.clear()
+    def load(data: dict, datablock: object):
-        if "materials" in data.keys():
+        # MATERIAL SLOTS
-            for mat in data['materials']:
+        src_materials = data.get('materials', None)
-                target.materials.append(bpy.data.materials[mat])
+        if src_materials:
+            load_materials_slots(src_materials, datablock.materials)
 
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         # TODO: reuse existing layer
-        for layer in target.layers:
+        for layer in datablock.layers:
-            target.layers.remove(layer)
+            datablock.layers.remove(layer)
 
         if "layers" in data.keys():
             for layer in data["layers"]:
                 layer_data = data["layers"].get(layer)
 
-                # if layer not in target.layers.keys():
+                # if layer not in datablock.layers.keys():
-                target_layer = target.layers.new(data["layers"][layer]["info"])
+                target_layer = datablock.layers.new(data["layers"][layer]["info"])
                 # else:
                 #     target_layer = target.layers[layer]
                 #     target_layer.clear()
 
                 load_layer(layer_data, target_layer)
 
-            target.layers.update()
+            datablock.layers.update()
 
-
+    @staticmethod
-
+    def dump(datablock: object) -> dict:
-    def _dump_implementation(self, data, instance=None):
-        assert(instance)
         dumper = Dumper()
         dumper.depth = 2
         dumper.include_filter = [
-            'materials',
             'name',
             'zdepth_offset',
             'stroke_thickness_space',
             'pixel_factor',
             'stroke_depth_order'
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
-
+        data['materials'] = dump_materials_slots(datablock.materials)
         data['layers'] = {}
 
-        for layer in instance.layers:
+        for layer in datablock.layers:
             data['layers'][layer.info] = dump_layer(layer)
 
-        data["active_layers"] = instance.layers.active.info
+        data["active_layers"] = datablock.layers.active.info if datablock.layers.active else "None"
         data["eval_frame"] = bpy.context.scene.frame_current
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.grease_pencils)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
-        for material in self.instance.materials:
+        for material in datablock.materials:
             deps.append(material)
 
         return deps
 
-    def layer_changed(self):
+    @staticmethod
-        return self.instance.layers.active.info != self.data["active_layers"]
+    def needs_update(datablock: object, data: dict) -> bool:
+        return bpy.context.mode == 'OBJECT' \
+            or layer_changed(datablock, data) \
+            or frame_changed(data) \
+            or get_preferences().sync_flags.sync_during_editmode \
+            or is_annotating(bpy.context)
 
-    def frame_changed(self):
+_type = bpy.types.GreasePencil
-        return  bpy.context.scene.frame_current != self.data["eval_frame"]
+_class = BlGpencil
-
-    def diff(self):
-        if self.layer_changed() \
-                or self.frame_changed() \
-                or bpy.context.mode == 'OBJECT' \
-                or self.preferences.sync_flags.sync_during_editmode:
-            return super().diff()
-        else:
-            return False

multi_user/bl_types/bl_image.py

@@ -24,9 +24,12 @@ import bpy
 import mathutils
 
 from .. import utils
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .dump_anything import Dumper, Loader
 from .bl_file import get_filepath, ensure_unpacked
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+
 
 format_to_ext = {
     'BMP': 'bmp',
@@ -48,35 +51,37 @@ format_to_ext = {
 }
 
 
-class BlImage(BlDatablock):
+class BlImage(ReplicatedDatablock):
     bl_id = "images"
     bl_class = bpy.types.Image
     bl_check_common = False
     bl_icon = 'IMAGE_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.images.new(
             name=data['name'],
             width=data['size'][0],
             height=data['size'][1]
         )
 
-    def _load(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(data, target)
+        loader.load(datablock, data)
 
-        target.source = 'FILE'
+        # datablock.name = data.get('name')
-        target.filepath_raw = get_filepath(data['filename'])
+        datablock.source = 'FILE'
-        color_space_name = data["colorspace_settings"]["name"]
+        datablock.filepath_raw = get_filepath(data['filename'])
+        color_space_name = data.get("colorspace")
 
         if color_space_name:
-            target.colorspace_settings.name = color_space_name
+            datablock.colorspace_settings.name = color_space_name
 
-    def _dump(self, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
+        filename = Path(datablock.filepath).name
-        filename = Path(instance.filepath).name
 
         data = {
             "filename": filename
@@ -88,40 +93,45 @@ class BlImage(BlDatablock):
             "name",
             # 'source',
             'size',
-            'height',
+            'alpha_mode']
-            'alpha',
+        data.update(dumper.dump(datablock))
-            'float_buffer',
+        data['colorspace'] = datablock.colorspace_settings.name
-            'alpha_mode',
+
-            'colorspace_settings']
-        data.update(dumper.dump(instance))
         return data
 
-    def diff(self):
+    @staticmethod
-        if self.instance.is_dirty:
+    def resolve(data: dict) -> object:
-            self.instance.save()
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.images)
 
-        if self.instance and (self.instance.name != self.data['name']):
+    @staticmethod
-            return True
+    def resolve_deps(datablock: object) -> [object]:
-        else:
-            return False
-
-    def _resolve_deps_implementation(self):
         deps = []
 
-        if self.instance.packed_file:
+        if datablock.packed_file:
-            filename = Path(bpy.path.abspath(self.instance.filepath)).name
+            filename = Path(bpy.path.abspath(datablock.filepath)).name
-            self.instance.filepath_raw = get_filepath(filename)
+            datablock.filepath_raw = get_filepath(filename)
-            self.instance.save()
+            datablock.save()
             # An image can't be unpacked to the modified path
             # TODO: make a bug report
-            self.instance.unpack(method="REMOVE")
+            datablock.unpack(method="REMOVE")
 
-        elif self.instance.source == "GENERATED":
+        elif datablock.source == "GENERATED":
-            filename = f"{self.instance.name}.png"
+            filename = f"{datablock.name}.png"
-            self.instance.filepath = get_filepath(filename)
+            datablock.filepath = get_filepath(filename)
-            self.instance.save()
+            datablock.save()
 
-        if self.instance.filepath:
+        if datablock.filepath:
-            deps.append(Path(bpy.path.abspath(self.instance.filepath)))
+            deps.append(Path(bpy.path.abspath(datablock.filepath)))
 
         return deps
+
+    @staticmethod
+    def needs_update(datablock: object, data:dict)-> bool:
+        if datablock.is_dirty:
+            datablock.save()
+
+        return True
+
+_type = bpy.types.Image
+_class = BlImage

multi_user/bl_types/bl_lattice.py

@@ -20,33 +20,41 @@ import bpy
 import mathutils
 
 from .dump_anything import Dumper, Loader, np_dump_collection, np_load_collection
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from replication.exception import ContextError
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 POINT = ['co', 'weight_softbody', 'co_deform']
 
 
-class BlLattice(BlDatablock):
+class BlLattice(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "lattices"
     bl_class = bpy.types.Lattice
     bl_check_common = False
     bl_icon = 'LATTICE_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.lattices.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        if target.is_editmode:
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
+        if datablock.is_editmode:
             raise ContextError("lattice is in edit mode")
 
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
-        np_load_collection(data['points'], target.points, POINT)
+        np_load_collection(data['points'], datablock.points, POINT)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        if instance.is_editmode:
+    def dump(datablock: object) -> dict:
+        if datablock.is_editmode:
             raise ContextError("lattice is in edit mode")
 
         dumper = Dumper()
@@ -62,9 +70,20 @@ class BlLattice(BlDatablock):
             'interpolation_type_w',
             'use_outside'
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
-
-        data['points'] = np_dump_collection(instance.points, POINT)
 
+        data['points'] = np_dump_collection(datablock.points, POINT)
+        data['animation_data'] = dump_animation_data(datablock)
         return data
 
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return  resolve_datablock_from_uuid(uuid, bpy.data.lattices)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        return resolve_animation_dependencies(datablock)
+
+_type = bpy.types.Lattice
+_class = BlLattice

multi_user/bl_types/bl_library.py

@@ -1,45 +0,0 @@
-# ##### BEGIN GPL LICENSE BLOCK #####
-#
-#   This program is free software: you can redistribute it and/or modify
-#   it under the terms of the GNU General Public License as published by
-#   the Free Software Foundation, either version 3 of the License, or
-#   (at your option) any later version.
-#
-#   This program is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#   GNU General Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License
-#   along with this program.  If not, see <https://www.gnu.org/licenses/>.
-#
-# ##### END GPL LICENSE BLOCK #####
-
-
-import bpy
-import mathutils
-
-from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
-
-
-class BlLibrary(BlDatablock):
-    bl_id = "libraries"
-    bl_class = bpy.types.Library
-    bl_check_common = False
-    bl_icon = 'LIBRARY_DATA_DIRECT'
-    bl_reload_parent = False
-
-    def _construct(self, data):
-        with bpy.data.libraries.load(filepath=data["filepath"], link=True) as (sourceData, targetData):
-            targetData = sourceData
-            return sourceData
-    def _load(self, data, target):
-        pass
-
-    def _dump(self, instance=None):
-        assert(instance)
-        dumper = Dumper()
-        return dumper.dump(instance)
-
-

multi_user/bl_types/bl_light.py

@@ -20,25 +20,34 @@ import bpy
 import mathutils
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 
-class BlLight(BlDatablock):
+class BlLight(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "lights"
     bl_class = bpy.types.Light
     bl_check_common = False
     bl_icon = 'LIGHT_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
-        return bpy.data.lights.new(data["name"], data["type"])
+    def construct(data: dict) -> object:
+        instance = bpy.data.lights.new(data["name"], data["type"])
+        instance.uuid = data.get("uuid")
+        return instance
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
+        load_animation_data(data.get('animation_data'), datablock)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         dumper.depth = 3
         dumper.include_filter = [
@@ -67,9 +76,23 @@ class BlLight(BlDatablock):
             'spot_size',
             'spot_blend'
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
+        data['animation_data'] = dump_animation_data(datablock)
         return data
 
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return  resolve_datablock_from_uuid(uuid, bpy.data.lights)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        deps = []
+
+        deps.extend(resolve_animation_dependencies(datablock))
+
+        return deps
 
 
-
+_type = [bpy.types.SpotLight, bpy.types.PointLight, bpy.types.AreaLight, bpy.types.SunLight]
+_class = BlLight

multi_user/bl_types/bl_lightprobe.py

@@ -21,17 +21,20 @@ import mathutils
 import logging
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
 
+class BlLightprobe(ReplicatedDatablock):
+    use_delta = True
 
-class BlLightprobe(BlDatablock):
     bl_id = "lightprobes"
     bl_class = bpy.types.LightProbe
     bl_check_common = False
     bl_icon = 'LIGHTPROBE_GRID'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         type = 'CUBE' if data['type'] == 'CUBEMAP' else data['type']
         # See https://developer.blender.org/D6396
         if bpy.app.version[1] >= 83:
@@ -39,12 +42,13 @@ class BlLightprobe(BlDatablock):
         else:
             logging.warning("Lightprobe replication only supported since 2.83. See https://developer.blender.org/D6396")
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
         if bpy.app.version[1] < 83:
             logging.warning("Lightprobe replication only supported since 2.83. See https://developer.blender.org/D6396")
 
@@ -71,7 +75,16 @@ class BlLightprobe(BlDatablock):
             'visibility_blur'
         ]
 
-        return dumper.dump(instance)
+        return dumper.dump(datablock)
 
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid') 
+        return resolve_datablock_from_uuid(uuid, bpy.data.lightprobes)
 
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        return []
 
+_type = bpy.types.LightProbe
+_class = BlLightprobe

multi_user/bl_types/bl_material.py

@@ -24,7 +24,10 @@ import re
 from uuid import uuid4
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
+from replication.protocol import ReplicatedDatablock
+
+from .bl_datablock import get_datablock_from_uuid, resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 NODE_SOCKET_INDEX = re.compile('\[(\d*)\]')
 IGNORED_SOCKETS = ['GEOMETRY', 'SHADER', 'CUSTOM']
@@ -45,7 +48,11 @@ def load_node(node_data: dict, node_tree: bpy.types.ShaderNodeTree):
     node_tree_uuid = node_data.get('node_tree_uuid', None)
 
     if image_uuid and not target_node.image:
-        target_node.image = get_datablock_from_uuid(image_uuid, None)
+        image = resolve_datablock_from_uuid(image_uuid, bpy.data.images)
+        if image is None:
+            logging.error(f"Fail to find material image from uuid {image_uuid}")
+        else:
+            target_node.image = image
 
     if node_tree_uuid:
         target_node.node_tree = get_datablock_from_uuid(node_tree_uuid, None)
@@ -117,8 +124,7 @@ def dump_node(node: bpy.types.ShaderNode) -> dict:
         "show_preview",
         "show_texture",
         "outputs",
-        "width_hidden",
+        "width_hidden"
-        "image"
     ]
 
     dumped_node = node_dumper.dump(node)
@@ -381,44 +387,50 @@ def load_materials_slots(src_materials: list, dst_materials: bpy.types.bpy_prop_
 
     for mat_uuid, mat_name in src_materials:
         mat_ref = None
-        if mat_uuid is not None:
+        if mat_uuid:
             mat_ref = get_datablock_from_uuid(mat_uuid, None)
         else:
             mat_ref = bpy.data.materials[mat_name]
-
         dst_materials.append(mat_ref)
 
 
-class BlMaterial(BlDatablock):
+class BlMaterial(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "materials"
     bl_class = bpy.types.Material
     bl_check_common = False
     bl_icon = 'MATERIAL_DATA'
     bl_reload_parent = False
+    bl_reload_child = True
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.materials.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
 
         is_grease_pencil = data.get('is_grease_pencil')
         use_nodes = data.get('use_nodes')
 
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         if is_grease_pencil:
-            if not target.is_grease_pencil:
+            if not datablock.is_grease_pencil:
-                bpy.data.materials.create_gpencil_data(target)
+                bpy.data.materials.create_gpencil_data(datablock)
-            loader.load(target.grease_pencil, data['grease_pencil'])
+            loader.load(datablock.grease_pencil, data['grease_pencil'])
         elif use_nodes:
-            if target.node_tree is None:
+            if datablock.node_tree is None:
-                target.use_nodes = True
+                datablock.use_nodes = True
 
-            load_node_tree(data['node_tree'], target.node_tree)
+            load_node_tree(data['node_tree'], datablock.node_tree)
+            load_animation_data(data.get('nodes_animation_data'), datablock.node_tree)
+        load_animation_data(data.get('animation_data'), datablock)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
         mat_dumper = Dumper()
         mat_dumper.depth = 2
         mat_dumper.include_filter = [
@@ -444,9 +456,9 @@ class BlMaterial(BlDatablock):
             'line_priority',
             'is_grease_pencil'
         ]
-        data = mat_dumper.dump(instance)
+        data = mat_dumper.dump(datablock)
 
-        if instance.is_grease_pencil:
+        if datablock.is_grease_pencil:
             gp_mat_dumper = Dumper()
             gp_mat_dumper.depth = 3
 
@@ -480,19 +492,30 @@ class BlMaterial(BlDatablock):
                 'use_overlap_strokes',
                 'use_fill_holdout',
             ]
-            data['grease_pencil'] = gp_mat_dumper.dump(instance.grease_pencil)
+            data['grease_pencil'] = gp_mat_dumper.dump(datablock.grease_pencil)
-        elif instance.use_nodes:
+        elif datablock.use_nodes:
-            data['node_tree'] = dump_node_tree(instance.node_tree)
+            data['node_tree'] = dump_node_tree(datablock.node_tree)
+            data['nodes_animation_data'] = dump_animation_data(datablock.node_tree)
+
+        data['animation_data'] = dump_animation_data(datablock)
 
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
-        # TODO: resolve node group deps
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.materials)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
-        if self.instance.use_nodes:
+        if datablock.use_nodes:
-            deps.extend(get_node_tree_dependencies(self.instance.node_tree))
+            deps.extend(get_node_tree_dependencies(datablock.node_tree))
-        if self.is_library:
+            deps.extend(resolve_animation_dependencies(datablock.node_tree))
-            deps.append(self.instance.library)
+        deps.extend(resolve_animation_dependencies(datablock))
 
         return deps
+
+_type = bpy.types.Material
+_class = BlMaterial

multi_user/bl_types/bl_mesh.py

@@ -25,8 +25,13 @@ import numpy as np
 from .dump_anything import Dumper, Loader, np_load_collection_primitives, np_dump_collection_primitive, np_load_collection, np_dump_collection
 from replication.constants import DIFF_BINARY
 from replication.exception import ContextError
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
+from replication.protocol import ReplicatedDatablock
+
+from .bl_datablock import get_datablock_from_uuid
 from .bl_material import dump_materials_slots, load_materials_slots
+from ..utils import get_preferences
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 VERTICE = ['co']
 
@@ -49,76 +54,79 @@ POLYGON = [
     'material_index',
 ]
 
-class BlMesh(BlDatablock):
+class BlMesh(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "meshes"
     bl_class = bpy.types.Mesh
     bl_check_common = False
     bl_icon = 'MESH_DATA'
     bl_reload_parent = True
 
-    def _construct(self, data):
+    @staticmethod
-        instance = bpy.data.meshes.new(data["name"])
+    def construct(data: dict) -> object:
-        instance.uuid = self.uuid
+        return bpy.data.meshes.new(data.get("name"))
-        return instance
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        if not target or target.is_editmode:
+    def load(data: dict, datablock: object):
+        if not datablock or datablock.is_editmode:
             raise ContextError
         else:
+            load_animation_data(data.get('animation_data'), datablock)
+
             loader = Loader()
-            loader.load(target, data)
+            loader.load(datablock, data)
 
             # MATERIAL SLOTS
             src_materials = data.get('materials', None)
             if src_materials:
-                load_materials_slots(src_materials, target.materials)
+                load_materials_slots(src_materials, datablock.materials)
 
             # CLEAR GEOMETRY
-            if target.vertices:
+            if datablock.vertices:
-                target.clear_geometry()
+                datablock.clear_geometry()
 
-            target.vertices.add(data["vertex_count"])
+            datablock.vertices.add(data["vertex_count"])
-            target.edges.add(data["egdes_count"])
+            datablock.edges.add(data["egdes_count"])
-            target.loops.add(data["loop_count"])
+            datablock.loops.add(data["loop_count"])
-            target.polygons.add(data["poly_count"])
+            datablock.polygons.add(data["poly_count"])
 
             # LOADING
-            np_load_collection(data['vertices'], target.vertices, VERTICE)
+            np_load_collection(data['vertices'], datablock.vertices, VERTICE)
-            np_load_collection(data['edges'], target.edges, EDGE)
+            np_load_collection(data['edges'], datablock.edges, EDGE)
-            np_load_collection(data['loops'], target.loops, LOOP)
+            np_load_collection(data['loops'], datablock.loops, LOOP)
-            np_load_collection(data["polygons"],target.polygons, POLYGON)
+            np_load_collection(data["polygons"],datablock.polygons, POLYGON)
 
             # UV Layers
             if 'uv_layers' in data.keys():
                 for layer in data['uv_layers']:
-                    if layer not in target.uv_layers:
+                    if layer not in datablock.uv_layers:
-                        target.uv_layers.new(name=layer)
+                        datablock.uv_layers.new(name=layer)
 
                     np_load_collection_primitives(
-                        target.uv_layers[layer].data, 
+                        datablock.uv_layers[layer].data, 
                         'uv', 
                         data["uv_layers"][layer]['data'])
             
             # Vertex color
             if 'vertex_colors' in data.keys():
                 for color_layer in data['vertex_colors']:
-                    if color_layer not in target.vertex_colors:
+                    if color_layer not in datablock.vertex_colors:
-                        target.vertex_colors.new(name=color_layer)
+                        datablock.vertex_colors.new(name=color_layer)
 
                     np_load_collection_primitives(
-                        target.vertex_colors[color_layer].data, 
+                        datablock.vertex_colors[color_layer].data, 
                         'color', 
                         data["vertex_colors"][color_layer]['data'])
 
-            target.validate()
+            datablock.validate()
-            target.update()
+            datablock.update()
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
+        if (datablock.is_editmode or bpy.context.mode == "SCULPT") and not get_preferences().sync_flags.sync_during_editmode:
-        if (instance.is_editmode or bpy.context.mode == "SCULPT") and not self.preferences.sync_flags.sync_during_editmode:
             raise ContextError("Mesh is in edit mode")
-        mesh = instance
+        mesh = datablock
 
         dumper = Dumper()
         dumper.depth = 1
@@ -132,6 +140,8 @@ class BlMesh(BlDatablock):
 
         data = dumper.dump(mesh)
 
+        data['animation_data'] = dump_animation_data(datablock)
+
         # VERTICES
         data["vertex_count"] = len(mesh.vertices)
         data["vertices"] = np_dump_collection(mesh.vertices, VERTICE)
@@ -163,21 +173,30 @@ class BlMesh(BlDatablock):
                 data['vertex_colors'][color_map.name]['data'] = np_dump_collection_primitive(color_map.data, 'color')
 
         # Materials
-        data['materials'] = dump_materials_slots(instance.materials)
+        data['materials'] = dump_materials_slots(datablock.materials)
         return data
     
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
-        for material in self.instance.materials:
+        for material in datablock.materials:
             if material:
                 deps.append(material)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-    def diff(self):
+    @staticmethod
-        if 'EDIT' in bpy.context.mode \
+    def resolve(data: dict) -> object:
-                and not self.preferences.sync_flags.sync_during_editmode:
+        uuid = data.get('uuid')
-            return False
+        return resolve_datablock_from_uuid(uuid, bpy.data.meshes)
-        else:
+
-            return super().diff()
+    @staticmethod
+    def needs_update(datablock: object, data: dict) -> bool:
+        return ('EDIT' not in bpy.context.mode and bpy.context.mode != 'SCULPT') \
+            or get_preferences().sync_flags.sync_during_editmode
+
+_type = bpy.types.Mesh
+_class = BlMesh

multi_user/bl_types/bl_metaball.py

@@ -23,7 +23,9 @@ from .dump_anything import (
     Dumper, Loader, np_dump_collection_primitive, np_load_collection_primitives,
     np_dump_collection, np_load_collection)
 
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 
 ELEMENT = [
@@ -62,29 +64,35 @@ def load_metaball_elements(elements_data, elements):
     np_load_collection(elements_data, elements, ELEMENT)
 
 
-class BlMetaball(BlDatablock):
+class BlMetaball(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "metaballs"
     bl_class = bpy.types.MetaBall
     bl_check_common = False
     bl_icon = 'META_BALL'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.metaballs.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        loader = Loader()
+    def load(data: dict, datablock: object):
-        loader.load(target, data)
+        load_animation_data(data.get('animation_data'), datablock)
 
-        target.elements.clear()
+        loader = Loader()
+        loader.load(datablock, data)
+
+        datablock.elements.clear()
 
         for mtype in data["elements"]['type']:
-            new_element = target.elements.new()
+            new_element = datablock.elements.new()
 
-        load_metaball_elements(data['elements'], target.elements)
+        load_metaball_elements(data['elements'], datablock.elements)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
@@ -98,7 +106,24 @@ class BlMetaball(BlDatablock):
             'texspace_size'
         ]
 
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
-        data['elements'] = dump_metaball_elements(instance.elements)
+        data['animation_data'] = dump_animation_data(datablock)
+        data['elements'] = dump_metaball_elements(datablock.elements)
 
         return data
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.metaballs)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        deps = []
+
+        deps.extend(resolve_animation_dependencies(datablock))
+
+        return deps
+
+_type = bpy.types.MetaBall
+_class = BlMetaball

multi_user/bl_types/bl_node_group.py

@@ -20,26 +20,45 @@ import bpy
 import mathutils
 
 from .dump_anything import Dumper, Loader, np_dump_collection, np_load_collection
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .bl_material import (dump_node_tree,
                           load_node_tree,
                           get_node_tree_dependencies)
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+
+class BlNodeGroup(ReplicatedDatablock):
+    use_delta = True
 
-class BlNodeGroup(BlDatablock):
     bl_id = "node_groups"
     bl_class = bpy.types.NodeTree
     bl_check_common = False
     bl_icon = 'NODETREE'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.node_groups.new(data["name"], data["type"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        load_node_tree(data, target)
+    def load(data: dict, datablock: object):
+        load_node_tree(data, datablock)
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        return dump_node_tree(instance)
+    def dump(datablock: object) -> dict:
+        return dump_node_tree(datablock)
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
-        return get_node_tree_dependencies(self.instance)
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.node_groups)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        deps = []
+        deps.extend(get_node_tree_dependencies(datablock))
+        deps.extend(resolve_animation_dependencies(datablock))
+        return deps
+
+_type = [bpy.types.ShaderNodeTree, bpy.types.GeometryNodeTree]
+_class = BlNodeGroup

multi_user/bl_types/bl_object.py

@@ -22,8 +22,10 @@ import bpy
 import mathutils
 from replication.exception import ContextError
 
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import get_datablock_from_uuid, resolve_datablock_from_uuid
 from .bl_material import IGNORED_SOCKETS
+from ..utils import get_preferences
 from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 from .dump_anything import (
     Dumper,
@@ -44,6 +46,8 @@ SHAPEKEY_BLOCK_ATTR = [
     'slider_min',
     'slider_max',
 ]
+
+
 if bpy.app.version[1] >= 93:
     SUPPORTED_GEOMETRY_NODE_PARAMETERS = (int, str, float)
 else:
@@ -51,6 +55,7 @@ else:
     logging.warning("Geometry node Float parameter not supported in \
                     blender 2.92.")
 
+
 def get_node_group_inputs(node_group):
     inputs = []
     for inpt in node_group.inputs:
@@ -89,6 +94,7 @@ def dump_physics(target: bpy.types.Object)->dict:
 
     return physics_data
 
+
 def load_physics(dumped_settings: dict, target: bpy.types.Object):
     """  Load all physics settings from a given object excluding modifier 
         related physics settings (such as softbody, cloth, dynapaint and fluid) 
@@ -115,6 +121,7 @@ def load_physics(dumped_settings: dict, target: bpy.types.Object):
     elif target.rigid_body_constraint:
         bpy.ops.rigidbody.constraint_remove({"object": target})
 
+
 def dump_modifier_geometry_node_inputs(modifier: bpy.types.Modifier) -> list:
     """ Dump geometry node modifier input properties
 
@@ -295,6 +302,7 @@ def load_vertex_groups(dumped_vertex_groups: dict, target_object: bpy.types.Obje
         for index, weight in vg['vertices']:
             vertex_group.add([index], weight, 'REPLACE')
 
+
 def dump_shape_keys(target_key: bpy.types.Key)->dict:
     """ Dump the target shape_keys datablock to a dict using numpy
 
@@ -370,12 +378,12 @@ def dump_modifiers(modifiers: bpy.types.bpy_prop_collection)->dict:
         :type modifiers: bpy.types.bpy_prop_collection
         :return: dict
     """
-    dumped_modifiers = {}
+    dumped_modifiers = []
     dumper = Dumper()
     dumper.depth = 1
     dumper.exclude_filter = ['is_active']
 
-    for index, modifier in enumerate(modifiers):
+    for modifier in modifiers:
         dumped_modifier = dumper.dump(modifier)
         # hack to dump geometry nodes inputs
         if modifier.type == 'NODES':
@@ -397,9 +405,78 @@ def dump_modifiers(modifiers: bpy.types.bpy_prop_collection)->dict:
         elif modifier.type == 'UV_PROJECT':
             dumped_modifier['projectors'] =[p.object.name for p in modifier.projectors if p and p.object]
 
-        dumped_modifiers[modifier.name] = dumped_modifier
+        dumped_modifiers.append(dumped_modifier)
     return dumped_modifiers
 
+def dump_constraints(constraints: bpy.types.bpy_prop_collection)->list:
+    """Dump all constraints to a list
+
+        :param constraints: constraints
+        :type constraints: bpy.types.bpy_prop_collection
+        :return: dict
+    """
+    dumper = Dumper()
+    dumper.depth = 2
+    dumper.include_filter = None
+    dumped_constraints = []
+    for constraint in constraints:
+        dumped_constraints.append(dumper.dump(constraint))
+    return dumped_constraints
+
+def load_constraints(dumped_constraints: list, constraints: bpy.types.bpy_prop_collection):
+    """ Load dumped constraints
+
+        :param dumped_constraints: list of constraints to load
+        :type dumped_constraints: list
+        :param constraints: constraints
+        :type constraints: bpy.types.bpy_prop_collection
+    """
+    loader = Loader()
+    constraints.clear()
+    for dumped_constraint in dumped_constraints:
+        constraint_type = dumped_constraint.get('type')
+        new_constraint = constraints.new(constraint_type)
+        loader.load(new_constraint, dumped_constraint)
+
+def load_modifiers(dumped_modifiers: list, modifiers: bpy.types.bpy_prop_collection):
+    """ Dump all modifiers of a modifier collection into a dict
+
+        :param dumped_modifiers: list of modifiers to load
+        :type dumped_modifiers: list
+        :param modifiers: modifiers
+        :type modifiers: bpy.types.bpy_prop_collection
+    """
+    loader = Loader()
+    modifiers.clear()
+    for dumped_modifier in dumped_modifiers:
+        name = dumped_modifier.get('name')
+        mtype = dumped_modifier.get('type')
+        loaded_modifier = modifiers.new(name, mtype)
+        loader.load(loaded_modifier, dumped_modifier)
+
+        if loaded_modifier.type == 'NODES':
+            load_modifier_geometry_node_inputs(dumped_modifier, loaded_modifier)
+        elif loaded_modifier.type == 'PARTICLE_SYSTEM':
+            default =  loaded_modifier.particle_system.settings
+            dumped_particles = dumped_modifier['particle_system']
+            loader.load(loaded_modifier.particle_system, dumped_particles)
+
+            settings = get_datablock_from_uuid(dumped_particles['settings_uuid'], None)
+            if settings:
+                loaded_modifier.particle_system.settings = settings
+                # Hack to remove the default generated particle settings
+                if not default.uuid:
+                    bpy.data.particles.remove(default)
+        elif loaded_modifier.type in ['SOFT_BODY', 'CLOTH']:
+            loader.load(loaded_modifier.settings, dumped_modifier['settings'])
+        elif loaded_modifier.type == 'UV_PROJECT':
+            for projector_index, projector_object in enumerate(dumped_modifier['projectors']):
+                target_object = bpy.data.objects.get(projector_object)
+                if target_object:
+                    loaded_modifier.projectors[projector_index].object = target_object
+                else:
+                    logging.error("Could't load projector target object {projector_object}")
+
 
 def load_modifiers_custom_data(dumped_modifiers: dict, modifiers: bpy.types.bpy_prop_collection):
     """ Load modifiers custom data not managed by the dump_anything loader
@@ -413,48 +490,21 @@ def load_modifiers_custom_data(dumped_modifiers: dict, modifiers: bpy.types.bpy_
 
     for modifier in modifiers:
         dumped_modifier = dumped_modifiers.get(modifier.name)
-        if modifier.type == 'NODES':
-            load_modifier_geometry_node_inputs(dumped_modifier, modifier)
-        elif modifier.type == 'PARTICLE_SYSTEM':
-            default =  modifier.particle_system.settings
-            dumped_particles = dumped_modifier['particle_system']
-            loader.load(modifier.particle_system, dumped_particles)
         
-            settings = get_datablock_from_uuid(dumped_particles['settings_uuid'], None)
-            if settings:
-                modifier.particle_system.settings = settings
-                # Hack to remove the default generated particle settings
-                if not default.uuid:
-                    bpy.data.particles.remove(default)
-        elif modifier.type in ['SOFT_BODY', 'CLOTH']:
-            loader.load(modifier.settings, dumped_modifier['settings'])
-        elif modifier.type == 'UV_PROJECT':
-            for projector_index, projector_object in enumerate(dumped_modifier['projectors']):
-                target_object = bpy.data.objects.get(projector_object)
-                if target_object:
-                    modifier.projectors[projector_index].object = target_object
-                else:
-                    logging.error("Could't load projector target object {projector_object}")
             
-class BlObject(BlDatablock):
+class BlObject(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "objects"
     bl_class = bpy.types.Object
     bl_check_common = False
     bl_icon = 'OBJECT_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         instance = None
 
-        if self.is_library:
-            with bpy.data.libraries.load(filepath=bpy.data.libraries[self.data['library']].filepath, link=True) as (sourceData, targetData):
-                targetData.objects = [
-                    name for name in sourceData.objects if name == self.data['name']]
-
-            instance = bpy.data.objects[self.data['name']]
-            instance.uuid = self.uuid
-            return instance
-
         # TODO: refactoring
         object_name = data.get("name")
         data_uuid = data.get("data_uuid")
@@ -467,70 +517,68 @@ class BlObject(BlDatablock):
             ignore=['images'])  # TODO: use resolve_from_id
 
         if data_type != 'EMPTY' and object_data is None:
-            raise Exception(f"Fail to load object {data['name']}({self.uuid})")
+            raise Exception(f"Fail to load object {data['name']})")
 
-        instance = bpy.data.objects.new(object_name, object_data)
+        return bpy.data.objects.new(object_name, object_data)
-        instance.uuid = self.uuid
 
-        return instance
+    @staticmethod
-
+    def load(data: dict, datablock: object):
-    def _load_implementation(self, data, target):
         loader = Loader()
-
+        load_animation_data(data.get('animation_data'), datablock)
         data_uuid = data.get("data_uuid")
         data_id = data.get("data")
 
-        if target.data and (target.data.name != data_id):
+        if datablock.data and (datablock.data.name != data_id):
-            target.data = get_datablock_from_uuid(
+            datablock.data = get_datablock_from_uuid(
                 data_uuid, find_data_from_name(data_id), ignore=['images'])
 
         # vertex groups
         vertex_groups = data.get('vertex_groups', None)
         if vertex_groups:
-            load_vertex_groups(vertex_groups, target)
+            load_vertex_groups(vertex_groups, datablock)
 
-        object_data = target.data
+        object_data = datablock.data
 
         # SHAPE KEYS
         shape_keys = data.get('shape_keys')
         if shape_keys:
-            load_shape_keys(shape_keys, target)
+            load_shape_keys(shape_keys, datablock)
 
         # Load transformation data
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         #  Object display fields
         if 'display' in data:
-            loader.load(target.display, data['display'])
+            loader.load(datablock.display, data['display'])
 
         #  Parenting
         parent_id = data.get('parent_uid')
         if parent_id:
             parent = get_datablock_from_uuid(parent_id[0], bpy.data.objects[parent_id[1]])
             # Avoid reloading
-            if target.parent != parent and parent is not None:
+            if datablock.parent != parent and parent is not None:
-                target.parent = parent
+                datablock.parent = parent
-        elif target.parent:
+        elif datablock.parent:
-            target.parent = None
+            datablock.parent = None
 
         # Pose
         if 'pose' in data:
-            if not target.pose:
+            if not datablock.pose:
                 raise Exception('No pose data yet (Fixed in a near futur)')
             # Bone groups
             for bg_name in data['pose']['bone_groups']:
                 bg_data = data['pose']['bone_groups'].get(bg_name)
-                bg_target = target.pose.bone_groups.get(bg_name)
+                bg_target = datablock.pose.bone_groups.get(bg_name)
 
                 if not bg_target:
-                    bg_target = target.pose.bone_groups.new(name=bg_name)
+                    bg_target = datablock.pose.bone_groups.new(name=bg_name)
 
                 loader.load(bg_target, bg_data)
-                # target.pose.bone_groups.get
+                # datablock.pose.bone_groups.get
 
             # Bones
             for bone in data['pose']['bones']:
-                target_bone = target.pose.bones.get(bone)
+                target_bone = datablock.pose.bones.get(bone)
                 bone_data = data['pose']['bones'].get(bone)
 
                 if 'constraints' in bone_data.keys():
@@ -539,13 +587,13 @@ class BlObject(BlDatablock):
                 load_pose(target_bone, bone_data)
 
                 if 'bone_index' in bone_data.keys():
-                    target_bone.bone_group = target.pose.bone_group[bone_data['bone_group_index']]
+                    target_bone.bone_group = datablock.pose.bone_group[bone_data['bone_group_index']]
 
         # TODO: find another way...
-        if target.empty_display_type == "IMAGE":
+        if datablock.empty_display_type == "IMAGE":
             img_uuid = data.get('data_uuid')
-            if target.data is None and img_uuid:
+            if datablock.data is None and img_uuid:
-                target.data = get_datablock_from_uuid(img_uuid, None)
+                datablock.data = get_datablock_from_uuid(img_uuid, None)
 
         if hasattr(object_data, 'skin_vertices') \
                 and object_data.skin_vertices\
@@ -556,30 +604,31 @@ class BlObject(BlDatablock):
                     skin_data.data,
                     SKIN_DATA)
 
-        if hasattr(target, 'cycles_visibility') \
+        if hasattr(datablock, 'cycles_visibility') \
                 and 'cycles_visibility' in data:
-            loader.load(target.cycles_visibility, data['cycles_visibility'])
+            loader.load(datablock.cycles_visibility, data['cycles_visibility'])
 
-        if hasattr(target, 'modifiers'):
+        if hasattr(datablock, 'modifiers'):
-            load_modifiers_custom_data(data['modifiers'], target.modifiers)
+            load_modifiers(data['modifiers'], datablock.modifiers)
+
+        constraints = data.get('constraints')
+        if constraints:
+            load_constraints(constraints, datablock.constraints)
 
         # PHYSICS
-        load_physics(data, target)
+        load_physics(data, datablock)
 
         transform = data.get('transforms', None)
         if transform:
-            target.matrix_parent_inverse = mathutils.Matrix(
+            datablock.matrix_parent_inverse = mathutils.Matrix(transform['matrix_parent_inverse'])
-                transform['matrix_parent_inverse'])
+            datablock.matrix_basis = mathutils.Matrix(transform['matrix_basis'])
-            target.matrix_basis = mathutils.Matrix(transform['matrix_basis'])
-            target.matrix_local = mathutils.Matrix(transform['matrix_local'])
 
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
+        if _is_editmode(datablock):
-        if _is_editmode(instance):
+            if get_preferences().sync_flags.sync_during_editmode:
-            if self.preferences.sync_flags.sync_during_editmode:
+                datablock.update_from_editmode()
-                instance.update_from_editmode()
             else:
                 raise ContextError("Object is in edit-mode.")
 
@@ -615,35 +664,37 @@ class BlObject(BlDatablock):
             'show_all_edges',
             'show_texture_space',
             'show_in_front',
-            'type'
+            'type',
+            'parent_type',
+            'parent_bone',
+            'track_axis',
+            'up_axis',
         ]
 
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
-
+        data['animation_data'] = dump_animation_data(datablock)
         dumper.include_filter = [
             'matrix_parent_inverse',
             'matrix_local',
             'matrix_basis']
-        data['transforms'] = dumper.dump(instance)
+        data['transforms'] = dumper.dump(datablock)
         dumper.include_filter = [
             'show_shadows',
         ]
-        data['display'] = dumper.dump(instance.display)
+        data['display'] = dumper.dump(datablock.display)
 
-        data['data_uuid'] = getattr(instance.data, 'uuid', None)
+        data['data_uuid'] = getattr(datablock.data, 'uuid', None)
-        if self.is_library:
-            return data
 
         # PARENTING
-        if instance.parent:
+        if datablock.parent:
-            data['parent_uid'] = (instance.parent.uuid, instance.parent.name)
+            data['parent_uid'] = (datablock.parent.uuid, datablock.parent.name)
 
         # MODIFIERS
-        modifiers = getattr(instance, 'modifiers', None)
+        modifiers = getattr(datablock, 'modifiers', None)
-        if hasattr(instance, 'modifiers'):
+        if hasattr(datablock, 'modifiers'):
             data['modifiers'] = dump_modifiers(modifiers)
 
-        gp_modifiers = getattr(instance, 'grease_pencil_modifiers', None)
+        gp_modifiers = getattr(datablock, 'grease_pencil_modifiers', None)
 
         if gp_modifiers:
             dumper.include_filter = None
@@ -666,16 +717,14 @@ class BlObject(BlDatablock):
 
 
         # CONSTRAINTS
-        if hasattr(instance, 'constraints'):
+        if hasattr(datablock, 'constraints'):
-            dumper.include_filter = None
+            data["constraints"] = dump_constraints(datablock.constraints)
-            dumper.depth = 3
-            data["constraints"] = dumper.dump(instance.constraints)
 
         # POSE
-        if hasattr(instance, 'pose') and instance.pose:
+        if hasattr(datablock, 'pose') and datablock.pose:
             # BONES
             bones = {}
-            for bone in instance.pose.bones:
+            for bone in datablock.pose.bones:
                 bones[bone.name] = {}
                 dumper.depth = 1
                 rotation = 'rotation_quaternion' if bone.rotation_mode == 'QUATERNION' else 'rotation_euler'
@@ -700,7 +749,7 @@ class BlObject(BlDatablock):
 
             # GROUPS
             bone_groups = {}
-            for group in instance.pose.bone_groups:
+            for group in datablock.pose.bone_groups:
                 dumper.depth = 3
                 dumper.include_filter = [
                     'name',
@@ -710,11 +759,11 @@ class BlObject(BlDatablock):
             data['pose']['bone_groups'] = bone_groups
 
         # VERTEx GROUP
-        if len(instance.vertex_groups) > 0:
+        if len(datablock.vertex_groups) > 0:
-            data['vertex_groups'] = dump_vertex_groups(instance)
+            data['vertex_groups'] = dump_vertex_groups(datablock)
 
         #  SHAPE KEYS
-        object_data = instance.data
+        object_data = datablock.data
         if hasattr(object_data, 'shape_keys') and object_data.shape_keys:
             data['shape_keys'] = dump_shape_keys(object_data.shape_keys)
 
@@ -727,7 +776,7 @@ class BlObject(BlDatablock):
             data['skin_vertices'] = skin_vertices
 
         # CYCLE SETTINGS
-        if hasattr(instance, 'cycles_visibility'):
+        if hasattr(datablock, 'cycles_visibility'):
             dumper.include_filter = [
                 'camera',
                 'diffuse',
@@ -736,38 +785,48 @@ class BlObject(BlDatablock):
                 'scatter',
                 'shadow',
             ]
-            data['cycles_visibility'] = dumper.dump(instance.cycles_visibility)
+            data['cycles_visibility'] = dumper.dump(datablock.cycles_visibility)
 
         # PHYSICS
-        data.update(dump_physics(instance))
+        data.update(dump_physics(datablock))
 
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
         # Avoid Empty case
-        if self.instance.data:
+        if datablock.data:
-            deps.append(self.instance.data)
+            deps.append(datablock.data)
 
         # Particle systems
-        for particle_slot in self.instance.particle_systems:
+        for particle_slot in datablock.particle_systems:
             deps.append(particle_slot.settings)
 
-        if self.is_library:
+        if datablock.parent:
-            deps.append(self.instance.library)
+            deps.append(datablock.parent)
 
-        if self.instance.parent:
+        if datablock.instance_type == 'COLLECTION':
-            deps.append(self.instance.parent)
-
-        if self.instance.instance_type == 'COLLECTION':
             # TODO: uuid based
-            deps.append(self.instance.instance_collection)
+            deps.append(datablock.instance_collection)
 
-        if self.instance.modifiers:
+        if datablock.modifiers:
-            deps.extend(find_textures_dependencies(self.instance.modifiers))
+            deps.extend(find_textures_dependencies(datablock.modifiers))
-            deps.extend(find_geometry_nodes_dependencies(self.instance.modifiers))
+            deps.extend(find_geometry_nodes_dependencies(datablock.modifiers))
+
+        if hasattr(datablock.data, 'shape_keys') and datablock.data.shape_keys:
+            deps.extend(resolve_animation_dependencies(datablock.data.shape_keys))
+
+        deps.extend(resolve_animation_dependencies(datablock))
 
-        if hasattr(self.instance.data, 'shape_keys') and self.instance.data.shape_keys:
-            deps.extend(resolve_animation_dependencies(self.instance.data.shape_keys))
         return deps
+
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return  resolve_datablock_from_uuid(uuid, bpy.data.objects)
+
+_type = bpy.types.Object
+_class = BlObject

multi_user/bl_types/bl_particle.py

@@ -2,7 +2,10 @@ import bpy
 import mathutils
 
 from . import dump_anything
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import get_datablock_from_uuid
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
 
 def dump_textures_slots(texture_slots: bpy.types.bpy_prop_collection) -> list:
@@ -37,54 +40,67 @@ IGNORED_ATTR = [
     "users"
 ]
 
-class BlParticle(BlDatablock):
+class BlParticle(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "particles"
     bl_class = bpy.types.ParticleSettings
     bl_icon = "PARTICLES"
     bl_check_common = False
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
-        instance = bpy.data.particles.new(data["name"])
+    def construct(data: dict) -> object:
-        instance.uuid = self.uuid
+        return bpy.data.particles.new(data["name"])
-        return instance
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        dump_anything.load(target, data)
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
+        dump_anything.load(datablock, data)
 
-        dump_anything.load(target.effector_weights, data["effector_weights"])
+        dump_anything.load(datablock.effector_weights, data["effector_weights"])
 
         # Force field
         force_field_1 = data.get("force_field_1", None)
         if force_field_1:
-            dump_anything.load(target.force_field_1, force_field_1)
+            dump_anything.load(datablock.force_field_1, force_field_1)
 
         force_field_2 = data.get("force_field_2", None)
         if force_field_2:
-            dump_anything.load(target.force_field_2, force_field_2)
+            dump_anything.load(datablock.force_field_2, force_field_2)
 
         # Texture slots
-        load_texture_slots(data["texture_slots"], target.texture_slots)
+        load_texture_slots(data["texture_slots"], datablock.texture_slots)
-
-    def _dump_implementation(self, data, instance=None):
-        assert instance
 
+    @staticmethod
+    def dump(datablock: object) -> dict:
         dumper = dump_anything.Dumper()
         dumper.depth = 1
         dumper.exclude_filter = IGNORED_ATTR
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
         # Particle effectors
-        data["effector_weights"] = dumper.dump(instance.effector_weights)
+        data["effector_weights"] = dumper.dump(datablock.effector_weights)
-        if instance.force_field_1:
+        if datablock.force_field_1:
-            data["force_field_1"] = dumper.dump(instance.force_field_1)
+            data["force_field_1"] = dumper.dump(datablock.force_field_1)
-        if instance.force_field_2:
+        if datablock.force_field_2:
-            data["force_field_2"] = dumper.dump(instance.force_field_2)
+            data["force_field_2"] = dumper.dump(datablock.force_field_2)
 
         # Texture slots
-        data["texture_slots"] = dump_textures_slots(instance.texture_slots)
+        data["texture_slots"] = dump_textures_slots(datablock.texture_slots)
-
+        data['animation_data'] = dump_animation_data(datablock)
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
-        return [t.texture for t in self.instance.texture_slots if t and t.texture]
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.particles)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
+        deps = [t.texture for t in datablock.texture_slots if t and t.texture]
+        deps.extend(resolve_animation_dependencies(datablock))
+        return deps
+
+_type = bpy.types.ParticleSettings
+_class = BlParticle

multi_user/bl_types/bl_scene.py

@@ -18,17 +18,21 @@
 
 import logging
 from pathlib import Path
+from uuid import uuid4
 
 import bpy
 import mathutils
-from deepdiff import DeepDiff
+from deepdiff import DeepDiff, Delta
 from replication.constants import DIFF_JSON, MODIFIED
+from replication.protocol import ReplicatedDatablock
 
-from ..utils import flush_history
+from ..utils import flush_history, get_preferences
+from .bl_action import (dump_animation_data, load_animation_data,
+                        resolve_animation_dependencies)
 from .bl_collection import (dump_collection_children, dump_collection_objects,
                             load_collection_childrens, load_collection_objects,
                             resolve_collection_dependencies)
-from .bl_datablock import BlDatablock
+from .bl_datablock import resolve_datablock_from_uuid
 from .bl_file import get_filepath
 from .dump_anything import Dumper, Loader
 
@@ -286,12 +290,10 @@ def dump_sequence(sequence: bpy.types.Sequence) -> dict:
     dumper.depth = 1
     data = dumper.dump(sequence)
 
-
     # TODO: Support multiple images
     if sequence.type == 'IMAGE':
         data['filenames'] = [e.filename for e in sequence.elements]
 
-
     # Effect strip inputs
     input_count = getattr(sequence, 'input_count', None)
     if input_count:
@@ -302,7 +304,8 @@ def dump_sequence(sequence: bpy.types.Sequence) -> dict:
     return data
 
 
-def load_sequence(sequence_data: dict, sequence_editor: bpy.types.SequenceEditor):
+def load_sequence(sequence_data: dict,
+                  sequence_editor: bpy.types.SequenceEditor):
     """ Load sequence from dumped data
 
         :arg sequence_data: sequence to dump
@@ -321,54 +324,56 @@ def load_sequence(sequence_data: dict, sequence_editor: bpy.types.SequenceEditor
         if strip_type == 'SCENE':
             strip_scene = bpy.data.scenes.get(sequence_data.get('scene'))
             sequence = sequence_editor.sequences.new_scene(strip_name,
-                                                        strip_scene,
+                                                           strip_scene,
-                                                        strip_channel,
+                                                           strip_channel,
-                                                        strip_frame_start)
+                                                           strip_frame_start)
         elif strip_type == 'MOVIE':
             filepath = get_filepath(Path(sequence_data['filepath']).name)
             sequence = sequence_editor.sequences.new_movie(strip_name,
-                                                        filepath,
+                                                           filepath,
-                                                        strip_channel,
+                                                           strip_channel,
-                                                        strip_frame_start)
+                                                           strip_frame_start)
         elif strip_type == 'SOUND':
             filepath = bpy.data.sounds[sequence_data['sound']].filepath
             sequence = sequence_editor.sequences.new_sound(strip_name,
-                                                        filepath,
+                                                           filepath,
-                                                        strip_channel,
+                                                           strip_channel,
-                                                        strip_frame_start)
+                                                           strip_frame_start)
         elif strip_type == 'IMAGE':
             images_name = sequence_data.get('filenames')
             filepath = get_filepath(images_name[0])
             sequence = sequence_editor.sequences.new_image(strip_name,
-                                                        filepath,
+                                                           filepath,
-                                                        strip_channel,
+                                                           strip_channel,
-                                                        strip_frame_start)
+                                                           strip_frame_start)
             # load other images
-            if len(images_name)>1:
+            if len(images_name) > 1:
-                for img_idx in range(1,len(images_name)):
+                for img_idx in range(1, len(images_name)):
                     sequence.elements.append((images_name[img_idx]))
         else:
             seq = {}
 
             for i in range(sequence_data['input_count']):
-                seq[f"seq{i+1}"] = sequence_editor.sequences_all.get(sequence_data.get(f"input_{i+1}", None))
+                seq[f"seq{i+1}"] = sequence_editor.sequences_all.get(
+                    sequence_data.get(f"input_{i+1}", None))
 
             sequence = sequence_editor.sequences.new_effect(name=strip_name,
-                                                        type=strip_type,
+                                                            type=strip_type,
-                                                        channel=strip_channel,
+                                                            channel=strip_channel,
-                                                        frame_start=strip_frame_start,
+                                                            frame_start=strip_frame_start,
-                                                        frame_end=sequence_data['frame_final_end'],
+                                                            frame_end=sequence_data['frame_final_end'],
-                                                        **seq)
+                                                            **seq)
 
     loader = Loader()
-    # TODO: Support filepath updates 
+
-    loader.exclure_filter = ['filepath', 'sound', 'filenames','fps']
+    loader.exclure_filter = ['filepath', 'sound', 'filenames', 'fps']
     loader.load(sequence, sequence_data)
     sequence.select = False
 
 
-class BlScene(BlDatablock):
+class BlScene(ReplicatedDatablock):
     is_root = True
+    use_delta = True
 
     bl_id = "scenes"
     bl_class = bpy.types.Scene
@@ -376,76 +381,88 @@ class BlScene(BlDatablock):
     bl_icon = 'SCENE_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
-        instance = bpy.data.scenes.new(data["name"])
+    def construct(data: dict) -> object:
-        instance.uuid = self.uuid
+        return bpy.data.scenes.new(data["name"])
 
-        return instance
+    @staticmethod
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
 
-    def _load_implementation(self, data, target):
         # Load other meshes metadata
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         # Load master collection
         load_collection_objects(
-            data['collection']['objects'], target.collection)
+            data['collection']['objects'], datablock.collection)
         load_collection_childrens(
-            data['collection']['children'], target.collection)
+            data['collection']['children'], datablock.collection)
 
         if 'world' in data.keys():
-            target.world = bpy.data.worlds[data['world']]
+            datablock.world = bpy.data.worlds[data['world']]
 
         # Annotation
-        if 'grease_pencil' in data.keys():
+        gpencil_uid = data.get('grease_pencil')
-            target.grease_pencil = bpy.data.grease_pencils[data['grease_pencil']]
+        if gpencil_uid:
+            datablock.grease_pencil = resolve_datablock_from_uuid(gpencil_uid, bpy.data.grease_pencils)
 
-        if self.preferences.sync_flags.sync_render_settings:
+        if get_preferences().sync_flags.sync_render_settings:
             if 'eevee' in data.keys():
-                loader.load(target.eevee, data['eevee'])
+                loader.load(datablock.eevee, data['eevee'])
 
             if 'cycles' in data.keys():
-                loader.load(target.cycles, data['cycles'])
+                loader.load(datablock.cycles, data['cycles'])
 
             if 'render' in data.keys():
-                loader.load(target.render, data['render'])
+                loader.load(datablock.render, data['render'])
 
-            if 'view_settings' in data.keys():
+            view_settings = data.get('view_settings')
-                loader.load(target.view_settings, data['view_settings'])
+            if view_settings:
-                if target.view_settings.use_curve_mapping and \
+                loader.load(datablock.view_settings, view_settings)
-                        'curve_mapping' in data['view_settings']:
+                if datablock.view_settings.use_curve_mapping and \
+                        'curve_mapping' in view_settings:
                     # TODO: change this ugly fix
-                    target.view_settings.curve_mapping.white_level = data[
+                    datablock.view_settings.curve_mapping.white_level = view_settings['curve_mapping']['white_level']
-                        'view_settings']['curve_mapping']['white_level']
+                    datablock.view_settings.curve_mapping.black_level = view_settings['curve_mapping']['black_level']
-                    target.view_settings.curve_mapping.black_level = data[
+                    datablock.view_settings.curve_mapping.update()
-                        'view_settings']['curve_mapping']['black_level']
-                    target.view_settings.curve_mapping.update()
 
         # Sequencer
         sequences = data.get('sequences')
         
         if sequences:
             # Create sequencer data
-            target.sequence_editor_create()
+            datablock.sequence_editor_create()
-            vse = target.sequence_editor
+            vse = datablock.sequence_editor
 
             # Clear removed sequences
             for seq in vse.sequences_all:
                 if seq.name not in sequences:
                     vse.sequences.remove(seq)
             # Load existing sequences
-            for seq_name, seq_data in sequences.items():
+            for seq_data in sequences.value():
                 load_sequence(seq_data, vse)
         # If the sequence is no longer used, clear it
-        elif target.sequence_editor and not sequences:
+        elif datablock.sequence_editor and not sequences:
-            target.sequence_editor_clear()
+            datablock.sequence_editor_clear()
 
+        # Timeline markers
+        markers = data.get('timeline_markers')
+        if markers:
+            datablock.timeline_markers.clear()
+            for name, frame, camera in markers:
+                marker = datablock.timeline_markers.new(name, frame=frame)
+                if camera:
+                    marker.camera = resolve_datablock_from_uuid(camera, bpy.data.objects)
+                marker.select = False
         # FIXME: Find a better way after the replication big refacotoring
         # Keep other user from deleting collection object by flushing their history
         flush_history()
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
+        data = {}
+        data['animation_data'] = dump_animation_data(datablock)
 
         # Metadata
         scene_dumper = Dumper()
@@ -454,45 +471,44 @@ class BlScene(BlDatablock):
             'name',
             'world',
             'id',
-            'grease_pencil',
             'frame_start',
             'frame_end',
             'frame_step',
         ]
-        if self.preferences.sync_flags.sync_active_camera:
+        if get_preferences().sync_flags.sync_active_camera:
             scene_dumper.include_filter.append('camera')
 
-        data.update(scene_dumper.dump(instance))
+        data.update(scene_dumper.dump(datablock))
 
         # Master collection
         data['collection'] = {}
         data['collection']['children'] = dump_collection_children(
-            instance.collection)
+            datablock.collection)
         data['collection']['objects'] = dump_collection_objects(
-            instance.collection)
+            datablock.collection)
 
         scene_dumper.depth = 1
         scene_dumper.include_filter = None
 
         # Render settings
-        if self.preferences.sync_flags.sync_render_settings:
+        if get_preferences().sync_flags.sync_render_settings:
             scene_dumper.include_filter = RENDER_SETTINGS
 
-            data['render'] = scene_dumper.dump(instance.render)
+            data['render'] = scene_dumper.dump(datablock.render)
 
-            if instance.render.engine == 'BLENDER_EEVEE':
+            if datablock.render.engine == 'BLENDER_EEVEE':
                 scene_dumper.include_filter = EVEE_SETTINGS
-                data['eevee'] = scene_dumper.dump(instance.eevee)
+                data['eevee'] = scene_dumper.dump(datablock.eevee)
-            elif instance.render.engine == 'CYCLES':
+            elif datablock.render.engine == 'CYCLES':
                 scene_dumper.include_filter = CYCLES_SETTINGS
-                data['cycles'] = scene_dumper.dump(instance.cycles)
+                data['cycles'] = scene_dumper.dump(datablock.cycles)
 
             scene_dumper.include_filter = VIEW_SETTINGS
-            data['view_settings'] = scene_dumper.dump(instance.view_settings)
+            data['view_settings'] = scene_dumper.dump(datablock.view_settings)
 
-            if instance.view_settings.use_curve_mapping:
+            if datablock.view_settings.use_curve_mapping:
                 data['view_settings']['curve_mapping'] = scene_dumper.dump(
-                    instance.view_settings.curve_mapping)
+                    datablock.view_settings.curve_mapping)
                 scene_dumper.depth = 5
                 scene_dumper.include_filter = [
                     'curves',
@@ -500,35 +516,44 @@ class BlScene(BlDatablock):
                     'location',
                 ]
                 data['view_settings']['curve_mapping']['curves'] = scene_dumper.dump(
-                    instance.view_settings.curve_mapping.curves)
+                    datablock.view_settings.curve_mapping.curves)
 
         # Sequence
-        vse = instance.sequence_editor
+        vse = datablock.sequence_editor
         if vse:
             dumped_sequences = {}
             for seq in vse.sequences_all:
                 dumped_sequences[seq.name] = dump_sequence(seq)
             data['sequences'] = dumped_sequences
 
+        # Timeline markers
+        if datablock.timeline_markers:
+            data['timeline_markers'] = [(m.name, m.frame, getattr(m.camera, 'uuid', None)) for m in datablock.timeline_markers]
+
+        if datablock.grease_pencil:
+            data['grease_pencil'] = datablock.grease_pencil.uuid
  
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
         # Master Collection
-        deps.extend(resolve_collection_dependencies(self.instance.collection))
+        deps.extend(resolve_collection_dependencies(datablock.collection))
 
         # world
-        if self.instance.world:
+        if datablock.world:
-            deps.append(self.instance.world)
+            deps.append(datablock.world)
 
         # annotations
-        if self.instance.grease_pencil:
+        if datablock.grease_pencil:
-            deps.append(self.instance.grease_pencil)
+            deps.append(datablock.grease_pencil)
+
+        deps.extend(resolve_animation_dependencies(datablock))
 
         # Sequences
-        vse = self.instance.sequence_editor
+        vse = datablock.sequence_editor
         if vse:
             for sequence in vse.sequences_all:
                 if sequence.type == 'MOVIE' and sequence.filepath:
@@ -543,16 +568,45 @@ class BlScene(BlDatablock):
 
         return deps
 
-    def diff(self):
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        name = data.get('name')
+        datablock = resolve_datablock_from_uuid(uuid, bpy.data.scenes)
+        if datablock is None:
+            datablock = bpy.data.scenes.get(name)
+
+        return datablock
+
+    @staticmethod
+    def compute_delta(last_data: dict, current_data: dict) -> Delta:
         exclude_path = []
 
-        if not self.preferences.sync_flags.sync_render_settings:
+        if not get_preferences().sync_flags.sync_render_settings:
             exclude_path.append("root['eevee']")
             exclude_path.append("root['cycles']")
             exclude_path.append("root['view_settings']")
             exclude_path.append("root['render']")
 
-        if not self.preferences.sync_flags.sync_active_camera:
+        if not get_preferences().sync_flags.sync_active_camera:
             exclude_path.append("root['camera']")
 
-        return DeepDiff(self.data, self._dump(instance=self.instance), exclude_paths=exclude_path)
+        diff_params = {
+            'exclude_paths': exclude_path,
+            'ignore_order': True,
+            'report_repetition': True
+        }
+        delta_params = {
+            # 'mutate': True
+        }
+
+        return Delta(
+            DeepDiff(last_data,
+                     current_data,
+                     cache_size=5000,
+                     **diff_params),
+            **delta_params)
+
+
+_type = bpy.types.Scene
+_class = BlScene

multi_user/bl_types/bl_sound.py

@@ -23,45 +23,59 @@ from pathlib import Path
 import bpy
 
 from .bl_file import get_filepath, ensure_unpacked
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .dump_anything import Dumper, Loader
+from .bl_datablock import resolve_datablock_from_uuid
 
 
-class BlSound(BlDatablock):
+class BlSound(ReplicatedDatablock):
     bl_id = "sounds"
     bl_class = bpy.types.Sound
     bl_check_common = False
     bl_icon = 'SOUND'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         filename = data.get('filename')
 
         return bpy.data.sounds.load(get_filepath(filename))
 
-    def _load(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
-    def diff(self):
+    @staticmethod
-        return False
+    def dump(datablock: object) -> dict:
-
+        filename = Path(datablock.filepath).name
-    def _dump(self, instance=None):
-        filename = Path(instance.filepath).name
 
         if not filename:
-            raise FileExistsError(instance.filepath)
+            raise FileExistsError(datablock.filepath)
 
         return {
             'filename': filename,
-            'name': instance.name
+            'name': datablock.name
         }
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
-        if self.instance.filepath and self.instance.filepath != '<builtin>':
+        if datablock.filepath and datablock.filepath != '<builtin>':
-            ensure_unpacked(self.instance)
+            ensure_unpacked(datablock)
 
-            deps.append(Path(bpy.path.abspath(self.instance.filepath)))
+            deps.append(Path(bpy.path.abspath(datablock.filepath)))
 
         return deps
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.sounds)
+
+    @staticmethod
+    def needs_update(datablock: object, data:dict)-> bool:
+        return False
+
+_type = bpy.types.Sound
+_class = BlSound

multi_user/bl_types/bl_speaker.py

@@ -20,26 +20,31 @@ import bpy
 import mathutils
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
 
+class BlSpeaker(ReplicatedDatablock):
+    use_delta = True
 
-class BlSpeaker(BlDatablock):
     bl_id = "speakers"
     bl_class = bpy.types.Speaker
     bl_check_common = False
     bl_icon = 'SPEAKER'
     bl_reload_parent = False
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
+        load_animation_data(data.get('animation_data'), datablock)
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.speakers.new(data["name"])
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
@@ -58,17 +63,27 @@ class BlSpeaker(BlDatablock):
             'cone_volume_outer'
         ]
 
-        return dumper.dump(instance)
+        data = dumper.dump(datablock)
+        data['animation_data'] = dump_animation_data(datablock)
+        return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.speakers)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         # TODO: resolve material
         deps = []
 
-        sound = self.instance.sound
+        sound = datablock.sound
 
         if sound:
             deps.append(sound)
 
+        deps.extend(resolve_animation_dependencies(datablock))
         return deps
 
-
+_type = bpy.types.Speaker
+_class = BlSpeaker

multi_user/bl_types/bl_texture.py

@@ -20,25 +20,32 @@ import bpy
 import mathutils
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+import bpy.types as T
 
+class BlTexture(ReplicatedDatablock):
+    use_delta = True
 
-class BlTexture(BlDatablock):
     bl_id = "textures"
     bl_class = bpy.types.Texture
     bl_check_common = False
     bl_icon = 'TEXTURE'
     bl_reload_parent = False
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
+        load_animation_data(data.get('animation_data'), datablock)
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.textures.new(data["name"], data["type"])
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
 
         dumper = Dumper()
         dumper.depth = 1
@@ -52,24 +59,39 @@ class BlTexture(BlDatablock):
             'name_full'
         ]
 
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
-        color_ramp = getattr(instance, 'color_ramp', None)
+
+        color_ramp = getattr(datablock, 'color_ramp', None)
 
         if color_ramp:
             dumper.depth = 4
             data['color_ramp'] = dumper.dump(color_ramp)
 
+        data['animation_data'] = dump_animation_data(datablock)
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
-        # TODO: resolve material
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.textures)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
-        image = getattr(self.instance,"image", None)
+        image = getattr(datablock,"image", None)
 
         if image:
             deps.append(image)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-
+_type = [T.WoodTexture, T.VoronoiTexture,
+         T.StucciTexture, T.NoiseTexture,
+         T.MusgraveTexture, T.MarbleTexture,
+         T.MagicTexture, T.ImageTexture,
+         T.DistortedNoiseTexture, T.CloudsTexture,
+         T.BlendTexture]
+_class = BlTexture

multi_user/bl_types/bl_volume.py

@@ -21,32 +21,26 @@ import mathutils
 from pathlib import Path
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
+from replication.protocol import ReplicatedDatablock
+from .bl_datablock import get_datablock_from_uuid, resolve_datablock_from_uuid
 from .bl_material import dump_materials_slots, load_materials_slots
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+
+class BlVolume(ReplicatedDatablock):
+    use_delta = True
 
-class BlVolume(BlDatablock):
     bl_id = "volumes"
     bl_class = bpy.types.Volume
     bl_check_common = False
     bl_icon = 'VOLUME_DATA'
     bl_reload_parent = False
 
-    def _load_implementation(self, data, target):
+    @staticmethod
-        loader = Loader()
+    def construct(data: dict) -> object:
-        loader.load(target, data)
-        loader.load(target.display, data['display'])
-
-        # MATERIAL SLOTS
-        src_materials = data.get('materials', None)
-        if src_materials:
-            load_materials_slots(src_materials, target.materials)
-
-    def _construct(self, data):
         return bpy.data.volumes.new(data["name"])
 
-    def _dump_implementation(self, data, instance=None):
+    @staticmethod
-        assert(instance)
+    def dump(datablock: object) -> dict:
-
         dumper = Dumper()
         dumper.depth = 1
         dumper.exclude_filter = [
@@ -60,27 +54,48 @@ class BlVolume(BlDatablock):
             'use_fake_user'
         ]
 
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
-        data['display'] = dumper.dump(instance.display)
+        data['display'] = dumper.dump(datablock.display)
 
          # Fix material index
-        data['materials'] = dump_materials_slots(instance.materials)
+        data['materials'] = dump_materials_slots(datablock.materials)
-
+        data['animation_data'] = dump_animation_data(datablock)
         return data
 
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
+        loader = Loader()
+        loader.load(datablock, data)
+        loader.load(datablock.display, data['display'])
+
+        # MATERIAL SLOTS
+        src_materials = data.get('materials', None)
+        if src_materials:
+            load_materials_slots(src_materials, datablock.materials)
+
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.volumes)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         # TODO: resolve material
         deps = []
 
-        external_vdb = Path(bpy.path.abspath(self.instance.filepath))
+        external_vdb = Path(bpy.path.abspath(datablock.filepath))
         if external_vdb.exists() and not external_vdb.is_dir():
             deps.append(external_vdb)
 
-        for material in self.instance.materials:
+        for material in datablock.materials:
             if material:
                 deps.append(material)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-
+_type = bpy.types.Volume
+_class = BlVolume

multi_user/bl_types/bl_world.py

@@ -20,35 +20,42 @@ import bpy
 import mathutils
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import BlDatablock
+from replication.protocol import ReplicatedDatablock
 from .bl_material import (load_node_tree,
                           dump_node_tree,
                           get_node_tree_dependencies)
 
+from .bl_datablock import resolve_datablock_from_uuid
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+
+
+class BlWorld(ReplicatedDatablock):
+    use_delta = True
 
-class BlWorld(BlDatablock):
     bl_id = "worlds"
     bl_class = bpy.types.World
     bl_check_common = True
     bl_icon = 'WORLD_DATA'
     bl_reload_parent = False
 
-    def _construct(self, data):
+    @staticmethod
+    def construct(data: dict) -> object:
         return bpy.data.worlds.new(data["name"])
 
-    def _load_implementation(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         if data["use_nodes"]:
-            if target.node_tree is None:
+            if datablock.node_tree is None:
-                target.use_nodes = True
+                datablock.use_nodes = True
 
-            load_node_tree(data['node_tree'], target.node_tree)
+            load_node_tree(data['node_tree'], datablock.node_tree)
-
-    def _dump_implementation(self, data, instance=None):
-        assert(instance)
 
+    @staticmethod
+    def dump(datablock: object) -> dict:
         world_dumper = Dumper()
         world_dumper.depth = 1
         world_dumper.include_filter = [
@@ -56,17 +63,27 @@ class BlWorld(BlDatablock):
             "name",
             "color"
         ]
-        data = world_dumper.dump(instance)
+        data = world_dumper.dump(datablock)
-        if instance.use_nodes:
+        if datablock.use_nodes:
-            data['node_tree'] = dump_node_tree(instance.node_tree)
+            data['node_tree'] = dump_node_tree(datablock.node_tree)
 
+        data['animation_data'] = dump_animation_data(datablock)
         return data
     
-    def _resolve_deps_implementation(self):
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.worlds)
+
+    @staticmethod
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
-        if self.instance.use_nodes:
+        if datablock.use_nodes:
-            deps.extend(get_node_tree_dependencies(self.instance.node_tree))
+            deps.extend(get_node_tree_dependencies(datablock.node_tree))
-        if self.is_library:
+
-            deps.append(self.instance.library)
+        deps.extend(resolve_animation_dependencies(datablock))
         return deps
+
+_type = bpy.types.World
+_class = BlWorld

multi_user/bl_types/dump_anything.py

@@ -507,16 +507,12 @@ class Loader:
         _constructors = {
             T.ColorRampElement: (CONSTRUCTOR_NEW, ["position"]),
             T.ParticleSettingsTextureSlot: (CONSTRUCTOR_ADD, []),
-            T.Modifier: (CONSTRUCTOR_NEW, ["name", "type"]),
             T.GpencilModifier: (CONSTRUCTOR_NEW, ["name", "type"]),
-            T.Constraint: (CONSTRUCTOR_NEW, ["type"]),
         }
 
         destructors = {
             T.ColorRampElement: DESTRUCTOR_REMOVE,
-            T.Modifier: DESTRUCTOR_CLEAR,
             T.GpencilModifier: DESTRUCTOR_CLEAR,
-            T.Constraint: DESTRUCTOR_REMOVE,
         }
         element_type = element.bl_rna_property.fixed_type
 

multi_user/environment.py

@@ -24,20 +24,25 @@ import sys
 from pathlib import Path
 import socket
 import re
+import bpy
 
 VERSION_EXPR = re.compile('\d+.\d+.\d+')
-
-THIRD_PARTY = os.path.join(os.path.dirname(os.path.abspath(__file__)), "libs")
 DEFAULT_CACHE_DIR = os.path.join(
     os.path.dirname(os.path.abspath(__file__)), "cache")
+REPLICATION_DEPENDENCIES = {
+    "zmq",
+    "deepdiff"
+}
+LIBS = os.path.join(os.path.dirname(os.path.abspath(__file__)), "libs")
+REPLICATION = os.path.join(LIBS,"replication")
+
 PYTHON_PATH = None
 SUBPROCESS_DIR = None
 
-
 rtypes = []
 
 
-def module_can_be_imported(name):
+def module_can_be_imported(name: str) -> bool:
     try:
         __import__(name)
         return True
@@ -50,7 +55,7 @@ def install_pip():
     subprocess.run([str(PYTHON_PATH), "-m", "ensurepip"])
 
 
-def install_package(name, version):
+def install_package(name: str, install_dir: str):
     logging.info(f"installing {name} version...")
     env = os.environ
     if "PIP_REQUIRE_VIRTUALENV" in env:
@@ -60,12 +65,13 @@ def install_package(name, version):
         # env var for the subprocess.
         env = os.environ.copy()
         del env["PIP_REQUIRE_VIRTUALENV"]
-    subprocess.run([str(PYTHON_PATH), "-m", "pip", "install", f"{name}=={version}"], env=env)
+    subprocess.run([str(PYTHON_PATH), "-m", "pip", "install", f"{name}", "-t", install_dir], env=env)
 
     if name in sys.modules:
         del sys.modules[name]
 
-def check_package_version(name, required_version):
+
+def check_package_version(name: str, required_version: str):
     logging.info(f"Checking {name} version...")
     out = subprocess.run([str(PYTHON_PATH), "-m", "pip", "show", name], capture_output=True)
 
@@ -77,6 +83,7 @@ def check_package_version(name, required_version):
         logging.info(f"{name} need an update")
         return False
 
+
 def get_ip():
     """
     Retrieve the main network interface IP.
@@ -94,7 +101,25 @@ def check_dir(dir):
         os.makedirs(dir)
 
 
-def setup(dependencies, python_path):
+def setup_paths(paths: list):
+    """ Add missing path to sys.path
+    """ 
+    for path in paths:
+        if path not in sys.path:
+            logging.debug(f"Adding {path} dir to the path.")
+            sys.path.insert(0, path)
+
+
+def remove_paths(paths: list):
+    """ Remove list of path from sys.path
+    """
+    for path in paths:
+        if path in sys.path:
+            logging.debug(f"Removing {path} dir from the path.")
+            sys.path.remove(path)
+
+
+def install_modules(dependencies: list, python_path: str, install_dir: str):
     global PYTHON_PATH, SUBPROCESS_DIR
 
     PYTHON_PATH = Path(python_path)
@@ -103,9 +128,23 @@ def setup(dependencies, python_path):
     if not module_can_be_imported("pip"):
         install_pip()
 
-    for package_name, package_version in dependencies:
+    for package_name in dependencies:
         if not module_can_be_imported(package_name):
-            install_package(package_name, package_version)
+            install_package(package_name, install_dir=install_dir)
             module_can_be_imported(package_name)
-        elif not check_package_version(package_name, package_version):
+
-            install_package(package_name, package_version)
+def register():
+    if bpy.app.version[1] >= 91:
+            python_binary_path = sys.executable
+    else:
+        python_binary_path = bpy.app.binary_path_python
+
+    for module_name in list(sys.modules.keys()):
+        if 'replication' in module_name:
+            del sys.modules[module_name]
+
+    setup_paths([LIBS, REPLICATION])
+    install_modules(REPLICATION_DEPENDENCIES, python_binary_path, install_dir=LIBS)
+
+def unregister():
+    remove_paths([REPLICATION, LIBS])

multi_user/handlers.py

@@ -0,0 +1,152 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+import logging
+
+import bpy
+from bpy.app.handlers import persistent
+from replication import porcelain
+from replication.constants import RP_COMMON, STATE_ACTIVE, STATE_SYNCING, UP
+from replication.exception import ContextError, NonAuthorizedOperationError
+from replication.interface import session
+
+from . import shared_data, utils
+
+
+def sanitize_deps_graph(remove_nodes: bool = False):
+    """ Cleanup the replication graph
+    """
+    if session and session.state == STATE_ACTIVE:
+        start = utils.current_milli_time()
+        rm_cpt = 0
+        for node in session.repository.graph.values():
+            node.instance = session.repository.rdp.resolve(node.data)
+            if node is None \
+                    or (node.state == UP and not node.instance):
+                if remove_nodes:
+                    try:
+                        porcelain.rm(session.repository,
+                                     node.uuid,
+                                     remove_dependencies=False)
+                        logging.info(f"Removing {node.uuid}")
+                        rm_cpt += 1
+                    except NonAuthorizedOperationError:
+                        continue
+        logging.info(f"Sanitize took { utils.current_milli_time()-start} ms, removed {rm_cpt} nodes")
+
+
+def update_external_dependencies():
+    """Force external dependencies(files such as images) evaluation 
+    """
+    external_types = ['WindowsPath', 'PosixPath', 'Image']
+    nodes_ids = [n.uuid for n in session.repository.graph.values() if n.data['type_id'] in external_types]
+    for node_id in nodes_ids:
+        node = session.repository.graph.get(node_id)
+        if node and node.owner in [session.repository.username, RP_COMMON]:
+            porcelain.commit(session.repository, node_id)
+            porcelain.push(session.repository, 'origin', node_id)
+
+
+@persistent
+def on_scene_update(scene):
+    """Forward blender depsgraph update to replication
+    """
+    if session and session.state == STATE_ACTIVE:
+        context = bpy.context
+        blender_depsgraph = bpy.context.view_layer.depsgraph
+        dependency_updates = [u for u in blender_depsgraph.updates]
+        settings = utils.get_preferences()
+        incoming_updates = shared_data.session.applied_updates
+
+        distant_update = [getattr(u.id, 'uuid', None) for u in dependency_updates if getattr(u.id, 'uuid', None) in incoming_updates]
+        if distant_update:
+            for u in distant_update:
+                shared_data.session.applied_updates.remove(u)
+            logging.debug(f"Ignoring distant update of {dependency_updates[0].id.name}")
+            return
+
+        update_external_dependencies()
+
+        # NOTE: maybe we don't need to check each update but only the first
+        for update in reversed(dependency_updates):
+            update_uuid = getattr(update.id, 'uuid', None)
+            if update_uuid:
+                node = session.repository.graph.get(update.id.uuid)
+                check_common = session.repository.rdp.get_implementation(update.id).bl_check_common
+
+                if node and (node.owner == session.repository.username or check_common):
+                    logging.debug(f"Evaluate {update.id.name}")
+                    if node.state == UP:
+                        try:
+                            porcelain.commit(session.repository, node.uuid)
+                            porcelain.push(session.repository,
+                                           'origin', node.uuid)
+                        except ReferenceError:
+                            logging.debug(f"Reference error {node.uuid}")
+                        except ContextError as e:
+                            logging.debug(e)
+                        except Exception as e:
+                            logging.error(e)
+                else:
+                    continue
+            elif isinstance(update.id, bpy.types.Scene):
+                scene = bpy.data.scenes.get(update.id.name)
+                scn_uuid = porcelain.add(session.repository, scene)
+                porcelain.commit(session.repository, scn_uuid)
+                porcelain.push(session.repository, 'origin', scn_uuid)
+
+
+@persistent
+def resolve_deps_graph(dummy):
+    """Resolve deps graph
+
+    Temporary solution to resolve each node pointers after a Undo.
+    A future solution should be to avoid storing dataclock reference...
+
+    """
+    if session and session.state == STATE_ACTIVE:
+        sanitize_deps_graph(remove_nodes=True)
+
+
+@persistent
+def load_pre_handler(dummy):
+    if session and session.state in [STATE_ACTIVE, STATE_SYNCING]:
+        bpy.ops.session.stop()
+
+
+@persistent
+def update_client_frame(scene):
+    if session and session.state == STATE_ACTIVE:
+        porcelain.update_user_metadata(session.repository, {
+            'frame_current': scene.frame_current
+        })
+
+
+def register():
+    bpy.app.handlers.undo_post.append(resolve_deps_graph)
+    bpy.app.handlers.redo_post.append(resolve_deps_graph)
+
+    bpy.app.handlers.load_pre.append(load_pre_handler)
+    bpy.app.handlers.frame_change_pre.append(update_client_frame)
+
+
+def unregister():
+    bpy.app.handlers.undo_post.remove(resolve_deps_graph)
+    bpy.app.handlers.redo_post.remove(resolve_deps_graph)
+
+    bpy.app.handlers.load_pre.remove(load_pre_handler)
+    bpy.app.handlers.frame_change_pre.remove(update_client_frame)

multi_user/operators.py

@@ -27,12 +27,12 @@ import shutil
 import string
 import sys
 import time
+import traceback
 from datetime import datetime
 from operator import itemgetter
 from pathlib import Path
 from queue import Queue
 from time import gmtime, strftime
-import traceback
 
 from bpy.props import FloatProperty
 
@@ -45,15 +45,17 @@ import bpy
 import mathutils
 from bpy.app.handlers import persistent
 from bpy_extras.io_utils import ExportHelper, ImportHelper
+from replication import porcelain
 from replication.constants import (COMMITED, FETCHED, RP_COMMON, STATE_ACTIVE,
                                    STATE_INITIAL, STATE_SYNCING, UP)
-from replication.data import DataTranslationProtocol
 from replication.exception import ContextError, NonAuthorizedOperationError
 from replication.interface import session
-from replication.porcelain import add, apply
+from replication.objects import Node
+from replication.protocol import DataTranslationProtocol
 from replication.repository import Repository
 
-from . import bl_types, environment, timers, ui, utils
+from . import bl_types, environment, shared_data, timers, ui, utils
+from .handlers import on_scene_update, sanitize_deps_graph
 from .presence import SessionStatusWidget, renderer, view3d_find
 from .timers import registry
 
@@ -79,41 +81,39 @@ def session_callback(name):
 def initialize_session():
     """Session connection init hander 
     """
-    logging.info("Intializing the scene")
     settings = utils.get_preferences()
     runtime_settings = bpy.context.window_manager.session
 
-    # Step 1: Constrect nodes
+    if not runtime_settings.is_host:
-    logging.info("Constructing nodes")
+        logging.info("Intializing the scene")
-    for node in session.repository.list_ordered():
+        # Step 1: Constrect nodes
-        node_ref = session.repository.get_node(node)
+        logging.info("Instantiating nodes")
-        if node_ref is None:
+        for node in session.repository.index_sorted:
-            logging.error(f"Can't construct node {node}")
+            node_ref = session.repository.graph.get(node)
-        elif node_ref.state == FETCHED:
+            if node_ref is None:
-            node_ref.resolve()
+                logging.error(f"Can't construct node {node}")
+            elif node_ref.state == FETCHED:
+                node_ref.instance = session.repository.rdp.resolve(node_ref.data)
+                if node_ref.instance is None:
+                    node_ref.instance = session.repository.rdp.construct(node_ref.data)
+                    node_ref.instance.uuid = node_ref.uuid
 
-    # Step 2: Load nodes
+        # Step 2: Load nodes
-    logging.info("Loading nodes")
+        logging.info("Applying nodes")
-    for node in session.repository.list_ordered():
+        for node in session.repository.heads:
-        node_ref = session.repository.get_node(node)
+            porcelain.apply(session.repository, node)
-
-        if node_ref is None:
-            logging.error(f"Can't load node {node}")
-        elif node_ref.state == FETCHED:
-            node_ref.apply()
 
     logging.info("Registering timers")
     # Step 4: Register blender timers
     for d in deleyables:
         d.register()
 
-    bpy.ops.session.apply_armature_operator('INVOKE_DEFAULT')
 
     # Step 5: Clearing history
     utils.flush_history()
 
     # Step 6: Launch deps graph update handling
-    bpy.app.handlers.depsgraph_update_post.append(depsgraph_evaluation)
+    bpy.app.handlers.depsgraph_update_post.append(on_scene_update)
 
 
 @session_callback('on_exit')
@@ -133,8 +133,8 @@ def on_connection_end(reason="none"):
 
     stop_modal_executor = True
 
-    if depsgraph_evaluation in bpy.app.handlers.depsgraph_update_post:
+    if on_scene_update in bpy.app.handlers.depsgraph_update_post:
-        bpy.app.handlers.depsgraph_update_post.remove(depsgraph_evaluation)
+        bpy.app.handlers.depsgraph_update_post.remove(on_scene_update)
 
     # Step 3: remove file handled
     logger = logging.getLogger()
@@ -191,36 +191,25 @@ class SessionStartOperator(bpy.types.Operator):
 
                 handler.setFormatter(formatter)
 
-        bpy_protocol = DataTranslationProtocol()
+        bpy_protocol = bl_types.get_data_translation_protocol()
-        supported_bl_types = []
 
-        # init the factory with supported types
+        # Check if supported_datablocks are up to date before starting the
-        for type in bl_types.types_to_register():
+        # the session
-            type_module = getattr(bl_types, type)
+        for dcc_type_id in bpy_protocol.implementations.keys():
-            name = [e.capitalize() for e in type.split('_')[1:]]
+            if dcc_type_id not in settings.supported_datablocks:
-            type_impl_name = 'Bl'+''.join(name)
+                logging.info(f"{dcc_type_id} not found, \
-            type_module_class = getattr(type_module, type_impl_name)
-
-            supported_bl_types.append(type_module_class.bl_id)
-
-            if type_impl_name not in settings.supported_datablocks:
-                logging.info(f"{type_impl_name} not found, \
                              regenerate type settings...")
                 settings.generate_supported_types()
 
-            type_local_config = settings.supported_datablocks[type_impl_name]
-
-            bpy_protocol.register_type(
-                type_module_class.bl_class,
-                type_module_class,
-                check_common=type_module_class.bl_check_common)
 
         if bpy.app.version[1] >= 91:
             python_binary_path = sys.executable
         else:
             python_binary_path = bpy.app.binary_path_python
 
-        repo = Repository(data_protocol=bpy_protocol)
+        repo = Repository(
+            rdp=bpy_protocol,
+            username=settings.username)
     
         # Host a session
         if self.host:
@@ -233,12 +222,17 @@ class SessionStartOperator(bpy.types.Operator):
             try:
                 # Init repository
                 for scene in bpy.data.scenes:
-                    add(repo, scene)
+                    porcelain.add(repo, scene)
 
+                porcelain.remote_add(
+                    repo,
+                    'origin',
+                    '127.0.0.1',
+                    settings.port,
+                    admin_password=admin_pass)
                 session.host(
                     repository= repo,
-                    id=settings.username,
+                    remote='origin',
-                    port=settings.port,
                     timeout=settings.connection_timeout,
                     password=admin_pass,
                     cache_directory=settings.cache_directory,
@@ -257,11 +251,14 @@ class SessionStartOperator(bpy.types.Operator):
                 admin_pass = None
 
             try:
+                porcelain.remote_add(
+                    repo,
+                    'origin',
+                    settings.ip,
+                    settings.port,
+                    admin_password=admin_pass)
                 session.connect(
                     repository= repo,
-                    id=settings.username,
-                    address=settings.ip,
-                    port=settings.port,
                     timeout=settings.connection_timeout,
                     password=admin_pass
                 )
@@ -273,14 +270,10 @@ class SessionStartOperator(bpy.types.Operator):
         deleyables.append(timers.ClientUpdate())
         deleyables.append(timers.DynamicRightSelectTimer())
         deleyables.append(timers.ApplyTimer(timeout=settings.depsgraph_update_rate))
-        # deleyables.append(timers.PushTimer(
+
-        #     queue=stagging,
-        #     timeout=settings.depsgraph_update_rate
-        #     ))
         session_update = timers.SessionStatusUpdate()
         session_user_sync = timers.SessionUserSync()
-        session_background_executor = timers.MainThreadExecutor(
+        session_background_executor = timers.MainThreadExecutor(execution_queue=background_execution_queue)
-            execution_queue=background_execution_queue)
         session_listen = timers.SessionListenTimer(timeout=0.001)
 
         session_listen.register()
@@ -292,11 +285,8 @@ class SessionStartOperator(bpy.types.Operator):
         deleyables.append(session_update)
         deleyables.append(session_user_sync)
         deleyables.append(session_listen)
+        deleyables.append(timers.AnnotationUpdates())
 
-
-        self.report(
-            {'INFO'},
-            f"connecting to tcp://{settings.ip}:{settings.port}")
         return {"FINISHED"}
 
 
@@ -332,9 +322,10 @@ class SessionInitOperator(bpy.types.Operator):
             utils.clean_scene()
 
         for scene in bpy.data.scenes:
-            add(session.repository, scene)
+            porcelain.add(session.repository, scene)
 
         session.init()
+        context.window_manager.session.is_host = True
 
         return {"FINISHED"}
 
@@ -381,7 +372,7 @@ class SessionKickOperator(bpy.types.Operator):
         assert(session)
 
         try:
-            session.kick(self.user)
+            porcelain.kick(session.repository, self.user)
         except Exception as e:
             self.report({'ERROR'}, repr(e))
 
@@ -410,7 +401,7 @@ class SessionPropertyRemoveOperator(bpy.types.Operator):
 
     def execute(self, context):
         try:
-            session.remove(self.property_path)
+            porcelain.rm(session.repository, self.property_path)
 
             return {"FINISHED"}
         except:  # NonAuthorizedOperationError:
@@ -452,10 +443,17 @@ class SessionPropertyRightOperator(bpy.types.Operator):
         runtime_settings = context.window_manager.session
 
         if session:
-            session.change_owner(self.key,
+            if runtime_settings.clients == RP_COMMON:
-                                 runtime_settings.clients,
+                porcelain.unlock(session.repository,
+                                 self.key,
                                  ignore_warnings=True,
                                  affect_dependencies=self.recursive)
+            else:
+                porcelain.lock(session.repository,
+                             self.key,
+                             runtime_settings.clients,
+                             ignore_warnings=True,
+                             affect_dependencies=self.recursive)
 
         return {"FINISHED"}
 
@@ -570,7 +568,7 @@ class SessionSnapTimeOperator(bpy.types.Operator):
 
     def modal(self, context, event):
         is_running = context.window_manager.session.user_snap_running
-        if event.type in {'RIGHTMOUSE', 'ESC'} or not is_running:
+        if not is_running:
             self.cancel(context)
             return {'CANCELLED'}
 
@@ -603,18 +601,24 @@ class SessionApply(bpy.types.Operator):
     def execute(self, context):
         logging.debug(f"Running apply on {self.target}")
         try:
-            node_ref = session.repository.get_node(self.target)
+            node_ref = session.repository.graph.get(self.target)
-            apply(session.repository,
+            porcelain.apply(session.repository,
-                  self.target,
+                            self.target,
-                  force=True,
+                            force=True)
-                  force_dependencies=self.reset_dependencies)
+            impl = session.repository.rdp.get_implementation(node_ref.instance)
-            if node_ref.bl_reload_parent:
+            # NOTE: find another way to handle child and parent automatic reloading
-                for parent in session.repository.get_parents(self.target):
+            if impl.bl_reload_parent:
+                for parent in session.repository.graph.get_parents(self.target):
                     logging.debug(f"Refresh parent {parent}")
 
-                    apply(session.repository,
+                    porcelain.apply(session.repository,
-                          parent.uuid,
+                                    parent.uuid,
-                          force=True)
+                                    force=True)
+            if hasattr(impl, 'bl_reload_child') and impl.bl_reload_child:
+                for dep in node_ref.dependencies:
+                    porcelain.apply(session.repository,
+                                    dep,
+                                    force=True)
         except Exception as e:
             self.report({'ERROR'}, repr(e))
             traceback.print_exc()
@@ -637,54 +641,12 @@ class SessionCommit(bpy.types.Operator):
 
     def execute(self, context):
         try:
-            session.commit(uuid=self.target)
+            porcelain.commit(session.repository, self.target)
-            session.push(self.target)
+            porcelain.push(session.repository, 'origin', self.target, force=True)
             return {"FINISHED"}
         except Exception as e:
             self.report({'ERROR'}, repr(e))
-            return {"CANCELED"}
+            return {"CANCELLED"}
-
-class ApplyArmatureOperator(bpy.types.Operator):
-    """Operator which runs its self from a timer"""
-    bl_idname = "session.apply_armature_operator"
-    bl_label = "Modal Executor Operator"
-
-    _timer = None
-
-    def modal(self, context, event):
-        global stop_modal_executor, modal_executor_queue
-        if stop_modal_executor:
-            self.cancel(context)
-            return {'CANCELLED'}
-
-        if event.type == 'TIMER':
-            if session and session.state == STATE_ACTIVE:
-                nodes = session.list(filter=bl_types.bl_armature.BlArmature)
-
-                for node in nodes:
-                    node_ref = session.repository.get_node(node)
-
-                    if node_ref.state == FETCHED:
-                        try:
-                            apply(session.repository, node)
-                        except Exception as e:
-                            logging.error("Fail to apply armature: {e}")
-
-        return {'PASS_THROUGH'}
-
-    def execute(self, context):
-        wm = context.window_manager
-        self._timer = wm.event_timer_add(2, window=context.window)
-        wm.modal_handler_add(self)
-        return {'RUNNING_MODAL'}
-
-    def cancel(self, context):
-        global stop_modal_executor
-
-        wm = context.window_manager
-        wm.event_timer_remove(self._timer)
-
-        stop_modal_executor = False
 
 
 class SessionClearCache(bpy.types.Operator):
@@ -715,6 +677,7 @@ class SessionClearCache(bpy.types.Operator):
         row = self.layout
         row.label(text=f" Do you really want to remove local cache ? ")
 
+
 class SessionPurgeOperator(bpy.types.Operator):
     "Remove node with lost references"
     bl_idname = "session.purge"
@@ -727,6 +690,7 @@ class SessionPurgeOperator(bpy.types.Operator):
     def execute(self, context):
         try:
             sanitize_deps_graph(remove_nodes=True)
+            porcelain.purge_orphan_nodes(session.repository)
         except Exception as e:
             self.report({'ERROR'}, repr(e))
 
@@ -759,7 +723,6 @@ class SessionNotifyOperator(bpy.types.Operator):
         layout = self.layout
         layout.row().label(text=self.message)
 
-
     def invoke(self, context, event):
         return context.window_manager.invoke_props_dialog(self)
 
@@ -797,7 +760,7 @@ class SessionSaveBackupOperator(bpy.types.Operator, ExportHelper):
             recorder.register()
             deleyables.append(recorder)
         else:
-            session.save(self.filepath)
+            session.repository.dumps(self.filepath)
 
         return {'FINISHED'}
 
@@ -805,6 +768,7 @@ class SessionSaveBackupOperator(bpy.types.Operator, ExportHelper):
     def poll(cls, context):
         return session.state == STATE_ACTIVE
 
+
 class SessionStopAutoSaveOperator(bpy.types.Operator):
     bl_idname = "session.cancel_autosave"
     bl_label = "Cancel auto-save"
@@ -839,63 +803,24 @@ class SessionLoadSaveOperator(bpy.types.Operator, ImportHelper):
     def execute(self, context):
         from replication.repository import Repository
 
-        # TODO: add filechecks
+        # init the factory with supported types
+        bpy_protocol = bl_types.get_data_translation_protocol()
+        repo = Repository(bpy_protocol)
+        repo.loads(self.filepath)
+        utils.clean_scene()
 
-        try:
+        nodes = [repo.graph.get(n) for n in repo.index_sorted]
-            f = gzip.open(self.filepath, "rb")
-            db = pickle.load(f)
-        except OSError as e:
-            f = open(self.filepath, "rb")
-            db = pickle.load(f)
 
-        if db:
+        # Step 1: Construct nodes
-            logging.info(f"Reading {self.filepath}")
+        for node in nodes:
-            nodes = db.get("nodes")
+            node.instance = bpy_protocol.resolve(node.data)
+            if node.instance is None:
+                node.instance = bpy_protocol.construct(node.data)
+                node.instance.uuid = node.uuid
 
-            logging.info(f"{len(nodes)} Nodes to load")
+        # Step 2: Load nodes
-
+        for node in nodes:
-            
+            porcelain.apply(repo, node.uuid)
-
-            # init the factory with supported types
-            bpy_protocol = DataTranslationProtocol()
-            for type in bl_types.types_to_register():
-                type_module = getattr(bl_types, type)
-                name = [e.capitalize() for e in type.split('_')[1:]]
-                type_impl_name = 'Bl'+''.join(name)
-                type_module_class = getattr(type_module, type_impl_name)
-
-
-                bpy_protocol.register_type(
-                    type_module_class.bl_class,
-                    type_module_class)
-            
-            graph = Repository()
-
-            for node, node_data in nodes:
-                node_type = node_data.get('str_type')
-
-                impl = bpy_protocol.get_implementation_from_net(node_type)
-
-                if impl:
-                    logging.info(f"Loading  {node}")
-                    instance = impl(owner=node_data['owner'],
-                                    uuid=node,
-                                    dependencies=node_data['dependencies'],
-                                    data=node_data['data'])
-                    graph.do_commit(instance)
-                    instance.state = FETCHED
-            
-            logging.info("Graph succefully loaded")
-
-            utils.clean_scene()
-
-            # Step 1: Construct nodes
-            for node in graph.list_ordered():
-                graph[node].resolve()
-
-            # Step 2: Load nodes
-            for node in graph.list_ordered():
-                graph[node].apply()
 
 
         return {'FINISHED'}
@@ -987,7 +912,6 @@ classes = (
     SessionPropertyRightOperator,
     SessionApply,
     SessionCommit,
-    ApplyArmatureOperator,
     SessionKickOperator,
     SessionInitOperator,
     SessionClearCache,
@@ -1000,106 +924,7 @@ classes = (
     SessionPresetServerRemove,
 )
 
-def update_external_dependencies():
-    nodes_ids = session.list(filter=bl_types.bl_file.BlFile)
-    for node_id in nodes_ids:
-        node = session.repository.get_node(node_id)
-        if node and node.owner in [session.id, RP_COMMON] \
-                and node.has_changed():
-            session.commit(node_id)
-            session.push(node_id, check_data=False)
 
-def sanitize_deps_graph(remove_nodes: bool = False):
-    """ Cleanup the replication graph
-    """
-    if session and session.state == STATE_ACTIVE:
-        start = utils.current_milli_time()
-        rm_cpt = 0
-        for node_key in session.list():
-            node = session.repository.get_node(node_key)
-            if node is None \
-                    or (node.state == UP and not node.resolve(construct=False)):
-                if remove_nodes:
-                    try:
-                        session.remove(node.uuid, remove_dependencies=False)
-                        logging.info(f"Removing {node.uuid}")
-                        rm_cpt += 1
-                    except NonAuthorizedOperationError:
-                        continue
-        logging.info(f"Sanitize took { utils.current_milli_time()-start} ms")
-
-
-@persistent
-def resolve_deps_graph(dummy):
-    """Resolve deps graph
-
-    Temporary solution to resolve each node pointers after a Undo.
-    A future solution should be to avoid storing dataclock reference...
-
-    """
-    if session and session.state == STATE_ACTIVE:
-        sanitize_deps_graph(remove_nodes=True)
-
-@persistent
-def load_pre_handler(dummy):
-    if session and session.state in [STATE_ACTIVE, STATE_SYNCING]:
-        bpy.ops.session.stop()
-
-
-@persistent
-def update_client_frame(scene):
-    if session and session.state == STATE_ACTIVE:
-        session.update_user_metadata({
-            'frame_current': scene.frame_current
-        })
-
-
-@persistent
-def depsgraph_evaluation(scene):
-    if session and session.state == STATE_ACTIVE:
-        context = bpy.context
-        blender_depsgraph = bpy.context.view_layer.depsgraph
-        dependency_updates = [u for u in blender_depsgraph.updates]
-        settings = utils.get_preferences()
-
-        update_external_dependencies()
-
-        # NOTE: maybe we don't need to check each update but only the first
-        for update in reversed(dependency_updates):
-            # Is the object tracked ?
-            if update.id.uuid:
-                # Retrieve local version
-                node = session.repository.get_node(update.id.uuid)
-                
-                # Check our right on this update:
-                #   - if its ours or ( under common and diff), launch the
-                # update process
-                #   - if its to someone else, ignore the update
-                if node and (node.owner == session.id or node.bl_check_common):
-                    if node.state == UP:
-                        try:
-                            if node.has_changed():
-                                session.commit(node.uuid)
-                                session.push(node.uuid, check_data=False)
-                        except ReferenceError:
-                            logging.debug(f"Reference error {node.uuid}")
-                            if not node.is_valid():
-                                session.remove(node.uuid)
-                        except ContextError as e:
-                            logging.debug(e) 
-                        except Exception as e:
-                            logging.error(e)
-                else:
-                    continue
-            # A new scene is created 
-            elif isinstance(update.id, bpy.types.Scene):
-                ref = session.repository.get_node_by_datablock(update.id)
-                if ref:
-                    ref.resolve()
-                else:
-                    scn_uuid = add(session.repository, update.id)
-                    session.commit(scn_uuid)
-                    session.push(scn_uuid, check_data=False)
 def register():
     from bpy.utils import register_class
 
@@ -1107,13 +932,6 @@ def register():
         register_class(cls)
 
 
-    bpy.app.handlers.undo_post.append(resolve_deps_graph)
-    bpy.app.handlers.redo_post.append(resolve_deps_graph)
-
-    bpy.app.handlers.load_pre.append(load_pre_handler)
-    bpy.app.handlers.frame_change_pre.append(update_client_frame)
-
-
 def unregister():
     if session and session.state == STATE_ACTIVE:
         session.disconnect()
@@ -1121,9 +939,3 @@ def unregister():
     from bpy.utils import unregister_class
     for cls in reversed(classes):
         unregister_class(cls)
-
-    bpy.app.handlers.undo_post.remove(resolve_deps_graph)
-    bpy.app.handlers.redo_post.remove(resolve_deps_graph)
-
-    bpy.app.handlers.load_pre.remove(load_pre_handler)
-    bpy.app.handlers.frame_change_pre.remove(update_client_frame)

multi_user/preferences.py

@@ -273,6 +273,13 @@ class SessionPrefs(bpy.types.AddonPreferences):
         step=1,
         subtype='PERCENTAGE',
     )
+    presence_mode_distance: bpy.props.FloatProperty(
+        name="Distance mode visibilty",
+        description="Adjust the distance visibilty of user's mode",
+        min=0.1,
+        max=1000,
+        default=100,
+    )
     conf_session_identity_expanded: bpy.props.BoolProperty(
         name="Identity",
         description="Identity",
@@ -446,10 +453,11 @@ class SessionPrefs(bpy.types.AddonPreferences):
                 col = box.column(align=True)
                 col.prop(self, "presence_hud_scale", expand=True)
                 
-
                 col.prop(self, "presence_hud_hpos", expand=True)
                 col.prop(self, "presence_hud_vpos", expand=True)
 
+                col.prop(self, "presence_mode_distance", expand=True)
+
         if self.category == 'UPDATE':
             from . import addon_updater_ops
             addon_updater_ops.update_settings_ui(self, context)
@@ -457,18 +465,18 @@ class SessionPrefs(bpy.types.AddonPreferences):
     def generate_supported_types(self):
         self.supported_datablocks.clear()
 
-        for type in bl_types.types_to_register():
+        bpy_protocol = bl_types.get_data_translation_protocol()
+
+        # init the factory with supported types
+        for dcc_type_id, impl in bpy_protocol.implementations.items():
             new_db = self.supported_datablocks.add()
 
-            type_module = getattr(bl_types, type)
+            new_db.name = dcc_type_id
-            name = [e.capitalize() for e in type.split('_')[1:]]
+            new_db.type_name = dcc_type_id
-            type_impl_name = 'Bl'+''.join(name)
-            type_module_class = getattr(type_module, type_impl_name)
-            new_db.name = type_impl_name
-            new_db.type_name = type_impl_name
             new_db.use_as_filter = True
-            new_db.icon = type_module_class.bl_icon
+            new_db.icon = impl.bl_icon
-            new_db.bl_name = type_module_class.bl_id
+            new_db.bl_name = impl.bl_id
+
 
     # custom at launch server preset
     def generate_default_presets(self): 
@@ -538,6 +546,11 @@ class SessionProps(bpy.types.PropertyGroup):
         description='Enable user overlay ',
         default=True,
     )
+    presence_show_mode: bpy.props.BoolProperty(
+        name="Show users current mode",
+        description='Enable user mode overlay ',
+        default=False,
+    )
     presence_show_far_user: bpy.props.BoolProperty(
         name="Show users on different scenes",
         description="Show user on different scenes",
@@ -553,6 +566,11 @@ class SessionProps(bpy.types.PropertyGroup):
         description='Show only owned datablocks',
         default=True
     )
+    filter_name: bpy.props.StringProperty(
+        name="filter_name",
+        default="",
+        description='Node name filter',
+    )
     admin: bpy.props.BoolProperty(
         name="admin",
         description='Connect as admin',

multi_user/presence.py

@@ -94,15 +94,41 @@ def project_to_viewport(region: bpy.types.Region, rv3d: bpy.types.RegionView3D,
     return [target.x, target.y, target.z]
 
 
-def bbox_from_obj(obj: bpy.types.Object, radius: float) -> list:
+def bbox_from_obj(obj: bpy.types.Object, index: int = 1) -> list:
     """ Generate a bounding box for a given object by using its world matrix
 
         :param obj: target object
         :type obj: bpy.types.Object
-        :param radius: bounding box radius
+        :param index: indice offset
-        :type radius: float
+        :type index: int 
-        :return: list of 8 points [(x,y,z),...]
+        :return: list of 8 points [(x,y,z),...], list of 12 link between these points [(1,2),...]
     """
+    radius = 1.0 # Radius of the bounding box
+    index = 8*index
+    vertex_indices = (
+            (0+index, 1+index), (0+index, 2+index), (1+index, 3+index), (2+index, 3+index),
+            (4+index, 5+index), (4+index, 6+index), (5+index, 7+index), (6+index, 7+index),
+            (0+index, 4+index), (1+index, 5+index), (2+index, 6+index), (3+index, 7+index))
+
+    if obj.type == 'EMPTY':
+        radius = obj.empty_display_size
+    elif obj.type == 'LIGHT':
+        radius = obj.data.shadow_soft_size
+    elif obj.type == 'LIGHT_PROBE':
+        radius = obj.data.influence_distance
+    elif obj.type == 'CAMERA':
+        radius = obj.data.display_size
+    elif hasattr(obj, 'bound_box'):
+        vertex_indices = (
+            (0+index, 1+index), (1+index, 2+index),
+            (2+index, 3+index), (0+index, 3+index),
+            (4+index, 5+index), (5+index, 6+index),
+            (6+index, 7+index), (4+index, 7+index),
+            (0+index, 4+index), (1+index, 5+index),
+            (2+index, 6+index), (3+index, 7+index))
+        vertex_pos = get_bb_coords_from_obj(obj)
+        return vertex_pos, vertex_indices
+
     coords = [
         (-radius, -radius, -radius), (+radius, -radius, -radius),
         (-radius, +radius, -radius), (+radius, +radius, -radius),
@@ -112,9 +138,32 @@ def bbox_from_obj(obj: bpy.types.Object, radius: float) -> list:
     base = obj.matrix_world
     bbox_corners = [base @ mathutils.Vector(corner) for corner in coords]
 
-    return [(point.x, point.y, point.z)
+    vertex_pos = [(point.x, point.y, point.z) for point in bbox_corners]
-            for point in bbox_corners]
 
+    return vertex_pos, vertex_indices
+
+def bbox_from_instance_collection(ic: bpy.types.Object, index: int = 0) -> list:
+    """ Generate a bounding box for a given instance collection by using its objects
+
+        :param ic: target instance collection
+        :type ic: bpy.types.Object
+        :param index: indice offset
+        :type index: int
+        :return: list of 8*objs points [(x,y,z),...], tuple of 12*objs link between these points [(1,2),...]
+    """
+    vertex_pos = []
+    vertex_indices = ()
+
+    for obj_index, obj in enumerate(ic.instance_collection.objects):
+        vertex_pos_temp, vertex_indices_temp = bbox_from_obj(obj, index=index+obj_index)
+        vertex_pos += vertex_pos_temp
+        vertex_indices += vertex_indices_temp
+
+    bbox_corners = [ic.matrix_world @ mathutils.Vector(vertex) for vertex in vertex_pos]
+
+    vertex_pos = [(point.x, point.y, point.z) for point in bbox_corners]
+
+    return vertex_pos, vertex_indices
 
 def generate_user_camera() -> list:
     """ Generate a basic camera represention of the user point of view
@@ -203,6 +252,13 @@ class Widget(object):
         """
         return True
 
+    def configure_bgl(self):
+        bgl.glLineWidth(2.)
+        bgl.glEnable(bgl.GL_DEPTH_TEST)
+        bgl.glEnable(bgl.GL_BLEND)
+        bgl.glEnable(bgl.GL_LINE_SMOOTH)
+
+
     def draw(self):
         """How to draw the widget
         """
@@ -256,11 +312,6 @@ class UserFrustumWidget(Widget):
             {"pos": positions},
             indices=self.indices)
 
-        bgl.glLineWidth(2.)
-        bgl.glEnable(bgl.GL_DEPTH_TEST)
-        bgl.glEnable(bgl.GL_BLEND)
-        bgl.glEnable(bgl.GL_LINE_SMOOTH)
-
         shader.bind()
         shader.uniform_float("color", self.data.get('color'))
         batch.draw(shader)
@@ -272,6 +323,8 @@ class UserSelectionWidget(Widget):
             username):
         self.username = username
         self.settings = bpy.context.window_manager.session
+        self.current_selection_ids = []
+        self.current_selected_objects = []
 
     @property
     def data(self):
@@ -281,6 +334,15 @@ class UserSelectionWidget(Widget):
         else:
             return None
 
+    @property
+    def selected_objects(self):
+        user_selection = self.data.get('selected_objects')
+        if self.current_selection_ids != user_selection:
+            self.current_selected_objects = [find_from_attr("uuid", uid, bpy.data.objects) for uid in user_selection]
+            self.current_selection_ids = user_selection
+
+        return self.current_selected_objects
+
     def poll(self):
         if self.data is None:
             return False
@@ -295,48 +357,31 @@ class UserSelectionWidget(Widget):
             self.settings.enable_presence
 
     def draw(self):
-        user_selection = self.data.get('selected_objects')
+        vertex_pos = []
-        for select_ob in user_selection:
+        vertex_ind = []
-            ob = find_from_attr("uuid", select_ob, bpy.data.objects)
+        collection_offset = 0
-            if not ob:
+        for obj_index, obj in enumerate(self.selected_objects):
-                return
+            if obj is None:
+                continue
+            obj_index+=collection_offset
+            if hasattr(obj, 'instance_collection') and obj.instance_collection:
+                bbox_pos, bbox_ind = bbox_from_instance_collection(obj, index=obj_index)
+                collection_offset+=len(obj.instance_collection.objects)-1
+            else :
+                bbox_pos, bbox_ind = bbox_from_obj(obj, index=obj_index)
+            vertex_pos += bbox_pos
+            vertex_ind += bbox_ind
 
-            vertex_pos = bbox_from_obj(ob, 1.0)
+        shader = gpu.shader.from_builtin('3D_UNIFORM_COLOR')
-            vertex_indices = ((0, 1), (0, 2), (1, 3), (2, 3),
+        batch = batch_for_shader(
-                              (4, 5), (4, 6), (5, 7), (6, 7),
+            shader,
-                              (0, 4), (1, 5), (2, 6), (3, 7))
+            'LINES',
-
+            {"pos": vertex_pos},
-            if ob.instance_collection:
+            indices=vertex_ind)
-                for obj in ob.instance_collection.objects:
-                    if obj.type == 'MESH' and  hasattr(obj, 'bound_box'):
-                        vertex_pos = get_bb_coords_from_obj(obj, instance=ob)
-                        break
-            elif ob.type == 'EMPTY':
-                vertex_pos = bbox_from_obj(ob, ob.empty_display_size)
-            elif ob.type == 'LIGHT':
-                vertex_pos = bbox_from_obj(ob, ob.data.shadow_soft_size)
-            elif ob.type == 'LIGHT_PROBE':
-                vertex_pos = bbox_from_obj(ob, ob.data.influence_distance)
-            elif ob.type == 'CAMERA':
-                vertex_pos = bbox_from_obj(ob, ob.data.display_size)
-            elif hasattr(ob, 'bound_box'):
-                vertex_indices = (
-                    (0, 1), (1, 2), (2, 3), (0, 3),
-                    (4, 5), (5, 6), (6, 7), (4, 7),
-                    (0, 4), (1, 5), (2, 6), (3, 7))
-                vertex_pos = get_bb_coords_from_obj(ob)
-
-            shader = gpu.shader.from_builtin('3D_UNIFORM_COLOR')
-            batch = batch_for_shader(
-                shader,
-                'LINES',
-                {"pos": vertex_pos},
-                indices=vertex_indices)
-
-            shader.bind()
-            shader.uniform_float("color", self.data.get('color'))
-            batch.draw(shader)
 
+        shader.bind()
+        shader.uniform_float("color", self.data.get('color'))
+        batch.draw(shader)
 
 class UserNameWidget(Widget):
     draw_type = 'POST_PIXEL'
@@ -380,6 +425,62 @@ class UserNameWidget(Widget):
             blf.color(0, color[0], color[1], color[2], color[3])
             blf.draw(0,  self.username)
 
+class UserModeWidget(Widget):
+    draw_type = 'POST_PIXEL'
+    
+    def __init__(
+            self,
+            username):
+        self.username = username
+        self.settings = bpy.context.window_manager.session
+        self.preferences = get_preferences()
+
+    @property
+    def data(self):
+        user = session.online_users.get(self.username)
+        if user:
+            return user.get('metadata')
+        else:
+            return None
+
+    def poll(self):
+        if self.data is None:
+            return False
+
+        scene_current = self.data.get('scene_current')
+        mode_current = self.data.get('mode_current')
+        user_selection = self.data.get('selected_objects')
+
+        return (scene_current == bpy.context.scene.name or
+                mode_current == bpy.context.mode or
+                self.settings.presence_show_far_user) and \
+            user_selection and \
+            self.settings.presence_show_mode and \
+            self.settings.enable_presence
+
+    def draw(self):
+        user_selection = self.data.get('selected_objects')
+        area, region, rv3d = view3d_find()
+        viewport_coord = project_to_viewport(region, rv3d, (0, 0))
+            
+        obj = find_from_attr("uuid", user_selection[0], bpy.data.objects)
+        if not obj:
+            return
+        mode_current = self.data.get('mode_current')      
+        color = self.data.get('color')
+        origin_coord = project_to_screen(obj.location)
+
+        distance_viewport_object = math.sqrt((viewport_coord[0]-obj.location[0])**2+(viewport_coord[1]-obj.location[1])**2+(viewport_coord[2]-obj.location[2])**2)
+
+        if distance_viewport_object > self.preferences.presence_mode_distance :
+            return
+
+        if origin_coord :
+            blf.position(0, origin_coord[0]+8, origin_coord[1]-15, 0)
+            blf.size(0, 16, 72)
+            blf.color(0, color[0], color[1], color[2], color[3])
+            blf.draw(0,  mode_current)        
+
 
 class SessionStatusWidget(Widget):
     draw_type = 'POST_PIXEL'
@@ -462,6 +563,7 @@ class DrawFactory(object):
         try:
             for widget in self.widgets.values():
                 if widget.draw_type == 'POST_VIEW' and widget.poll():
+                    widget.configure_bgl()
                     widget.draw()
         except Exception as e:
             logging.error(
@@ -471,6 +573,7 @@ class DrawFactory(object):
         try:
             for widget in self.widgets.values():
                 if widget.draw_type == 'POST_PIXEL' and widget.poll():
+                    widget.configure_bgl()
                     widget.draw()
         except Exception as e:
             logging.error(
@@ -484,6 +587,7 @@ this.renderer = DrawFactory()
 def register():
     this.renderer.register_handlers()
     
+
     this.renderer.add_widget("session_status", SessionStatusWidget())
 
 

multi_user/shared_data.py

@@ -0,0 +1,48 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+from replication.constants import STATE_INITIAL
+
+
+class SessionData():
+    """ A structure to share easily the current session data across the addon
+        modules.
+        This object will completely replace the Singleton lying in replication
+        interface module.  
+    """
+
+    def __init__(self):
+        self.repository = None  # The current repository
+        self.remote = None  # The active remote
+        self.server = None
+        self.applied_updates = []
+
+    @property
+    def state(self):
+        if self.remote is None:
+            return STATE_INITIAL
+        else:
+            return self.remote.connection_status
+
+    def clear(self):
+        self.remote = None
+        self.repository = None
+        self.server = None
+        self.applied_updates = []
+
+
+session = SessionData()

multi_user/timers.py

@@ -24,13 +24,15 @@ from replication.constants import (FETCHED, RP_COMMON, STATE_ACTIVE,
                                    STATE_SRV_SYNC, STATE_SYNCING, UP)
 from replication.exception import NonAuthorizedOperationError, ContextError
 from replication.interface import session
-from replication.porcelain import apply, add
+from replication import porcelain
 
 from . import operators, utils
-from .presence import (UserFrustumWidget, UserNameWidget, UserSelectionWidget,
+from .presence import (UserFrustumWidget, UserNameWidget, UserModeWidget, UserSelectionWidget,
                        generate_user_camera, get_view_matrix, refresh_3d_view,
                        refresh_sidebar_view, renderer)
 
+from . import shared_data 
+
 this = sys.modules[__name__]
 
 # Registered timers
@@ -39,7 +41,8 @@ this.registry = dict()
 def is_annotating(context: bpy.types.Context):
     """ Check if the annotate mode is enabled
     """
-    return bpy.context.workspace.tools.from_space_view3d_mode('OBJECT', create=False).idname == 'builtin.annotate'
+    active_tool = bpy.context.workspace.tools.from_space_view3d_mode('OBJECT', create=False)
+    return (active_tool and active_tool.idname == 'builtin.annotate')
 
 
 class Timer(object):
@@ -72,6 +75,7 @@ class Timer(object):
         except Exception as e:
             logging.error(e)
             self.unregister()
+            traceback.print_exc()
             session.disconnect(reason=f"Error during timer {self.id} execution")
         else:    
             if self.is_running:
@@ -99,7 +103,7 @@ class SessionBackupTimer(Timer):
 
 
     def execute(self):
-        session.save(self._filepath)
+        session.repository.dumps(self._filepath)
 
 class SessionListenTimer(Timer):
     def execute(self):
@@ -108,32 +112,76 @@ class SessionListenTimer(Timer):
 class ApplyTimer(Timer):
     def execute(self):
         if session and session.state == STATE_ACTIVE:
-            nodes = session.list()
+            for node in session.repository.graph.keys():
-
+                node_ref = session.repository.graph.get(node)
-            for node in nodes:
-                node_ref = session.repository.get_node(node)
 
                 if node_ref.state == FETCHED:
                     try:
-                        apply(session.repository, node)
+                        shared_data.session.applied_updates.append(node)
+                        porcelain.apply(session.repository, node)
                     except Exception as e:
                         logging.error(f"Fail to apply {node_ref.uuid}")
                         traceback.print_exc()
                     else:
-                        if node_ref.bl_reload_parent:
+                        impl = session.repository.rdp.get_implementation(node_ref.instance)
-                            for parent in session.repository.get_parents(node):
+                        if impl.bl_reload_parent:
+                            for parent in session.repository.graph.get_parents(node):
                                 logging.debug("Refresh parent {node}")
-                                apply(session.repository,
+                                porcelain.apply(session.repository,
                                       parent.uuid,
                                       force=True)
+                        if hasattr(impl, 'bl_reload_child') and impl.bl_reload_child:
+                            for dep in node_ref.dependencies:
+                                porcelain.apply(session.repository,
+                                                dep,
+                                                force=True)
 
 
+class AnnotationUpdates(Timer):
+    def __init__(self, timeout=1):
+        self._annotating = False
+        self._settings = utils.get_preferences()
+
+        super().__init__(timeout)
+
+    def execute(self):
+        if session and session.state == STATE_ACTIVE:
+            ctx = bpy.context
+            annotation_gp = ctx.scene.grease_pencil
+
+            if annotation_gp and not annotation_gp.uuid:
+                ctx.scene.update_tag()
+
+            # if an annotation exist and is tracked
+            if annotation_gp and annotation_gp.uuid:
+                registered_gp = session.repository.graph.get(annotation_gp.uuid)
+                if is_annotating(bpy.context):
+                    # try to get the right on it
+                    if registered_gp.owner == RP_COMMON:
+                        self._annotating = True
+                        logging.debug(
+                            "Getting the right on the annotation GP")
+                        porcelain.lock(session.repository,
+                                        [registered_gp.uuid],
+                                        ignore_warnings=True,
+                                        affect_dependencies=False)
+
+                    if registered_gp.owner == self._settings.username:
+                        porcelain.commit(session.repository, annotation_gp.uuid)
+                        porcelain.push(session.repository, 'origin', annotation_gp.uuid)
+
+                elif self._annotating:
+                    porcelain.unlock(session.repository,
+                                    [registered_gp.uuid],
+                                    ignore_warnings=True,
+                                    affect_dependencies=False)
+                    self._annotating = False
+
 class DynamicRightSelectTimer(Timer):
     def __init__(self, timeout=.1):
         super().__init__(timeout)
-        self._last_selection = []
+        self._last_selection = set()
         self._user = None
-        self._annotating = False
 
     def execute(self):
         settings = utils.get_preferences()
@@ -144,88 +192,46 @@ class DynamicRightSelectTimer(Timer):
                 self._user = session.online_users.get(settings.username)
 
             if self._user:
-                ctx = bpy.context
+                current_selection = set(utils.get_selected_objects(
-                annotation_gp = ctx.scene.grease_pencil
-
-                if annotation_gp and not annotation_gp.uuid:
-                    ctx.scene.update_tag()
-
-                # if an annotation exist and is tracked
-                if annotation_gp and annotation_gp.uuid:
-                    registered_gp = session.repository.get_node(annotation_gp.uuid)
-                    if is_annotating(bpy.context):
-                        # try to get the right on it
-                        if registered_gp.owner == RP_COMMON:
-                            self._annotating = True
-                            logging.debug(
-                                "Getting the right on the annotation GP")
-                            session.change_owner(
-                                registered_gp.uuid,
-                                settings.username,
-                                ignore_warnings=True,
-                                affect_dependencies=False)
-                        
-                        if registered_gp.owner == settings.username:
-                            gp_node = session.repository.get_node(annotation_gp.uuid)
-                            if gp_node.has_changed():
-                                session.commit(gp_node.uuid)
-                                session.push(gp_node.uuid, check_data=False)
-
-                    elif self._annotating:
-                        session.change_owner(
-                            registered_gp.uuid,
-                            RP_COMMON,
-                            ignore_warnings=True,
-                            affect_dependencies=False)
-
-                current_selection = utils.get_selected_objects(
                     bpy.context.scene,
                     bpy.data.window_managers['WinMan'].windows[0].view_layer
-                )
+                ))
                 if current_selection != self._last_selection:
-                    obj_common = [
+                    to_lock = list(current_selection.difference(self._last_selection))
-                        o for o in self._last_selection if o not in current_selection]
+                    to_release = list(self._last_selection.difference(current_selection))
-                    obj_ours = [
+                    instances_to_lock = list()
-                        o for o in current_selection if o not in self._last_selection]
 
-                    # change old selection right to common
+                    for node_id in to_lock:
-                    for obj in obj_common:
+                        node = session.repository.graph.get(node_id)
-                        node = session.repository.get_node(obj)
+                        instance_mode = node.data.get('instance_type')
+                        if instance_mode and instance_mode == 'COLLECTION':
+                            to_lock.remove(node_id)
+                            instances_to_lock.append(node_id)
+                    if instances_to_lock:
+                        try:
+                            porcelain.lock(session.repository,
+                                            instances_to_lock,
+                                            ignore_warnings=True,
+                                            affect_dependencies=False)
+                        except NonAuthorizedOperationError as e:
+                            logging.warning(e)
 
-                        if node and (node.owner == settings.username or node.owner == RP_COMMON):
+                    if to_release:
-                            recursive = True
+                        try:
-                            if node.data and 'instance_type' in node.data.keys():
+                            porcelain.unlock(session.repository,
-                                recursive = node.data['instance_type'] != 'COLLECTION'
+                                            to_release,
-                            try:
+                                            ignore_warnings=True,
-                                session.change_owner(
+                                            affect_dependencies=True)
-                                    node.uuid,
+                        except NonAuthorizedOperationError as e:
-                                    RP_COMMON,
+                            logging.warning(e)
-                                    ignore_warnings=True,
+                    if to_lock:
-                                    affect_dependencies=recursive)
+                        try:
-                            except NonAuthorizedOperationError:
+                            porcelain.lock(session.repository,
-                                logging.warning(
+                                            to_lock,
-                                    f"Not authorized to change {node} owner")
+                                            ignore_warnings=True,
-
+                                            affect_dependencies=True)
-                    # change new selection to our
+                        except NonAuthorizedOperationError as e:
-                    for obj in obj_ours:
+                            logging.warning(e)
-                        node = session.repository.get_node(obj)
-
-                        if node and node.owner == RP_COMMON:
-                            recursive = True
-                            if node.data and 'instance_type' in node.data.keys():
-                                recursive = node.data['instance_type'] != 'COLLECTION'
-
-                            try:
-                                session.change_owner(
-                                    node.uuid,
-                                    settings.username,
-                                    ignore_warnings=True,
-                                    affect_dependencies=recursive)
-                            except NonAuthorizedOperationError:
-                                logging.warning(
-                                    f"Not authorized to change {node} owner")
-                        else:
-                            return
 
                     self._last_selection = current_selection
 
@@ -233,31 +239,29 @@ class DynamicRightSelectTimer(Timer):
                         'selected_objects': current_selection
                     }
 
-                    session.update_user_metadata(user_metadata)
+                    porcelain.update_user_metadata(session.repository, user_metadata)
                     logging.debug("Update selection")
 
                     # Fix deselection until right managment refactoring (with Roles concepts)
                     if len(current_selection) == 0 :
-                        owned_keys = session.list(
+                        owned_keys = [k for k, v in session.repository.graph.items() if v.owner==settings.username]
-                            filter_owner=settings.username)
+                        if owned_keys:
-                        for key in owned_keys:
-                            node = session.repository.get_node(key)
                             try:
-                                session.change_owner(
+                                porcelain.unlock(session.repository,
-                                    key,
+                                                owned_keys,
-                                    RP_COMMON,
+                                                ignore_warnings=True,
-                                    ignore_warnings=True,
+                                                affect_dependencies=True)
-                                    affect_dependencies=recursive)
+                            except NonAuthorizedOperationError as e:
-                            except NonAuthorizedOperationError:
+                                logging.warning(e)
-                                logging.warning(
-                                    f"Not authorized to change {key} owner")
 
+            # Objects selectability
             for obj in bpy.data.objects:
                 object_uuid = getattr(obj, 'uuid', None)
                 if object_uuid:
-                    is_selectable = not session.is_readonly(object_uuid)
+                    is_selectable = not session.repository.is_node_readonly(object_uuid)
                     if obj.hide_select != is_selectable:
                         obj.hide_select = is_selectable
+                        shared_data.session.applied_updates.append(object_uuid)
 
 
 class ClientUpdate(Timer):
@@ -307,20 +311,24 @@ class ClientUpdate(Timer):
                                   settings.client_color.b,
                                   1),
                         'frame_current': bpy.context.scene.frame_current,
-                        'scene_current': scene_current
+                        'scene_current': scene_current,
+                        'mode_current': bpy.context.mode
                     }
-                    session.update_user_metadata(metadata)
+                    porcelain.update_user_metadata(session.repository, metadata)
 
                 # Update client representation
                 # Update client current scene
                 elif scene_current != local_user_metadata['scene_current']:
                     local_user_metadata['scene_current'] = scene_current
-                    session.update_user_metadata(local_user_metadata)
+                    porcelain.update_user_metadata(session.repository, local_user_metadata)
                 elif 'view_corners' in local_user_metadata and current_view_corners != local_user_metadata['view_corners']:
                     local_user_metadata['view_corners'] = current_view_corners
                     local_user_metadata['view_matrix'] = get_view_matrix(
                     )
-                    session.update_user_metadata(local_user_metadata)
+                    porcelain.update_user_metadata(session.repository, local_user_metadata)
+                elif bpy.context.mode != local_user_metadata['mode_current']:
+                    local_user_metadata['mode_current'] = bpy.context.mode
+                    porcelain.update_user_metadata(session.repository, local_user_metadata)
 
 
 class SessionStatusUpdate(Timer):
@@ -348,6 +356,7 @@ class SessionUserSync(Timer):
                     renderer.remove_widget(f"{user.username}_cam")
                     renderer.remove_widget(f"{user.username}_select")
                     renderer.remove_widget(f"{user.username}_name")
+                    renderer.remove_widget(f"{user.username}_mode")
                     ui_users.remove(index)
                     break
 
@@ -363,6 +372,8 @@ class SessionUserSync(Timer):
                             f"{user}_select", UserSelectionWidget(user))
                         renderer.add_widget(
                             f"{user}_name", UserNameWidget(user))
+                        renderer.add_widget(
+                            f"{user}_mode", UserModeWidget(user))
 
 
 class MainThreadExecutor(Timer):

multi_user/ui.py

@@ -107,7 +107,7 @@ class SESSION_PT_settings(bpy.types.Panel):
                     row = row.grid_flow(row_major=True, columns=0, even_columns=True, even_rows=False, align=True)
                     row.prop(settings.sync_flags, "sync_render_settings",text="",icon_only=True, icon='SCENE')
                     row.prop(settings.sync_flags, "sync_during_editmode", text="",icon_only=True, icon='EDITMODE_HLT')
-                    row.prop(settings.sync_flags, "sync_active_camera", text="",icon_only=True, icon='OBJECT_DATAMODE')
+                    row.prop(settings.sync_flags, "sync_active_camera", text="",icon_only=True, icon='VIEW_CAMERA')
 
                 row= layout.row()
 
@@ -343,9 +343,10 @@ class SESSION_PT_user(bpy.types.Panel):
         box = row.box()
         split = box.split(factor=0.35)
         split.label(text="user")
-        split = split.split(factor=0.5)
+        split = split.split(factor=0.3)
-        split.label(text="location")
+        split.label(text="mode")
         split.label(text="frame")
+        split.label(text="location")
         split.label(text="ping")
 
         row = layout.row()
@@ -383,6 +384,8 @@ class SESSION_UL_users(bpy.types.UIList):
         ping = '-'
         frame_current = '-'
         scene_current = '-'
+        mode_current = '-'
+        mode_icon = 'BLANK1'
         status_icon = 'BLANK1'
         if session:
             user = session.online_users.get(item.username)
@@ -392,13 +395,45 @@ class SESSION_UL_users(bpy.types.UIList):
                 if metadata and 'frame_current' in metadata:
                     frame_current = str(metadata.get('frame_current','-'))
                     scene_current = metadata.get('scene_current','-')
+                    mode_current = metadata.get('mode_current','-')
+                    if mode_current == "OBJECT" :
+                        mode_icon = "OBJECT_DATAMODE"
+                    elif mode_current == "EDIT_MESH" :
+                        mode_icon = "EDITMODE_HLT"
+                    elif mode_current == 'EDIT_CURVE':
+                        mode_icon = "CURVE_DATA"
+                    elif mode_current == 'EDIT_SURFACE':
+                        mode_icon = "SURFACE_DATA"
+                    elif mode_current == 'EDIT_TEXT':
+                        mode_icon = "FILE_FONT"
+                    elif mode_current == 'EDIT_ARMATURE':
+                        mode_icon = "ARMATURE_DATA"
+                    elif mode_current == 'EDIT_METABALL':
+                        mode_icon = "META_BALL"
+                    elif mode_current == 'EDIT_LATTICE':
+                        mode_icon = "LATTICE_DATA"
+                    elif mode_current == 'POSE':
+                        mode_icon = "POSE_HLT"
+                    elif mode_current == 'SCULPT':
+                        mode_icon = "SCULPTMODE_HLT"
+                    elif mode_current == 'PAINT_WEIGHT':
+                        mode_icon = "WPAINT_HLT"
+                    elif mode_current == 'PAINT_VERTEX':
+                        mode_icon = "VPAINT_HLT"
+                    elif mode_current == 'PAINT_TEXTURE':
+                        mode_icon = "TPAINT_HLT"
+                    elif mode_current == 'PARTICLE':
+                        mode_icon = "PARTICLES"
+                    elif mode_current == 'PAINT_GPENCIL' or mode_current =='EDIT_GPENCIL' or mode_current =='SCULPT_GPENCIL' or mode_current =='WEIGHT_GPENCIL' or mode_current =='VERTEX_GPENCIL':
+                        mode_icon = "GREASEPENCIL"
                 if user['admin']:
                     status_icon = 'FAKE_USER_ON'
         split = layout.split(factor=0.35)
         split.label(text=item.username, icon=status_icon)
-        split = split.split(factor=0.5)
+        split = split.split(factor=0.3)
-        split.label(text=scene_current)
+        split.label(icon=mode_icon)
         split.label(text=frame_current)
+        split.label(text=scene_current)
         split.label(text=ping)
 
 
@@ -425,26 +460,35 @@ class SESSION_PT_presence(bpy.types.Panel):
         settings = context.window_manager.session
         pref = get_preferences()
         layout.active = settings.enable_presence
+        
+        row = layout.row()
+        row = row.grid_flow(row_major=True, columns=0, even_columns=True, even_rows=False, align=True)
+        row.prop(settings, "presence_show_selected",text="",icon_only=True, icon='CUBE')
+        row.prop(settings, "presence_show_user", text="",icon_only=True, icon='CAMERA_DATA')
+        row.prop(settings, "presence_show_mode", text="",icon_only=True, icon='OBJECT_DATAMODE')
+        row.prop(settings, "presence_show_far_user", text="",icon_only=True, icon='SCENE_DATA')
+        
         col = layout.column()
+        if settings.presence_show_mode :
+            row = col.column()
+            row.prop(pref, "presence_mode_distance", expand=True)
+
         col.prop(settings, "presence_show_session_status")
-        row = col.column()
+        if settings.presence_show_session_status :
-        row.active = settings.presence_show_session_status
+            row = col.column()
-        row.prop(pref, "presence_hud_scale", expand=True)
+            row.active = settings.presence_show_session_status
-        row = col.column(align=True)
+            row.prop(pref, "presence_hud_scale", expand=True)
-        row.active = settings.presence_show_session_status
+            row = col.column(align=True)
-        row.prop(pref, "presence_hud_hpos", expand=True)
+            row.active = settings.presence_show_session_status
-        row.prop(pref, "presence_hud_vpos", expand=True)
+            row.prop(pref, "presence_hud_hpos", expand=True)
-        col.prop(settings, "presence_show_selected")
+            row.prop(pref, "presence_hud_vpos", expand=True)
-        col.prop(settings, "presence_show_user")
+
-        row = layout.column()
-        row.active = settings.presence_show_user
-        row.prop(settings, "presence_show_far_user")
 
 def draw_property(context, parent, property_uuid, level=0):
     settings = get_preferences()
     runtime_settings = context.window_manager.session
-    item = session.repository.get_node(property_uuid)
+    item = session.repository.graph.get(property_uuid)
-
+    type_id = item.data.get('type_id')
     area_msg = parent.row(align=True)
 
     if item.state == ERROR:
@@ -455,11 +499,10 @@ def draw_property(context, parent, property_uuid, level=0):
     line = area_msg.box()
 
     name = item.data['name'] if item.data else item.uuid
-
+    icon = settings.supported_datablocks[type_id].icon if type_id else 'ERROR'
     detail_item_box = line.row(align=True)
 
-    detail_item_box.label(text="",
+    detail_item_box.label(text="", icon=icon)
-                          icon=settings.supported_datablocks[item.str_type].icon)
     detail_item_box.label(text=f"{name}")
 
     # Operations
@@ -546,40 +589,27 @@ class SESSION_PT_repository(bpy.types.Panel):
             else:
                 row.operator('session.save', icon="FILE_TICK")
 
-            flow = layout.grid_flow(
+            box = layout.box()
-                row_major=True,
+            row = box.row()
-                columns=0,
+            row.prop(runtime_settings, "filter_owned", text="Show only owned Nodes", icon_only=True, icon="DECORATE_UNLOCKED")
-                even_columns=True,
+            row = box.row()
-                even_rows=False,
+            row.prop(runtime_settings, "filter_name", text="Filter")
-                align=True)
+            row = box.row()
-
-            for item in settings.supported_datablocks:
-                col = flow.column(align=True)
-                col.prop(item, "use_as_filter", text="", icon=item.icon)
-
-            row = layout.row(align=True)
-            row.prop(runtime_settings, "filter_owned", text="Show only owned")
-
-            row = layout.row(align=True)
 
             # Properties
-            types_filter = [t.type_name for t in settings.supported_datablocks
+            owned_nodes = [k for k, v in  session.repository.graph.items() if v.owner==settings.username]
-                            if t.use_as_filter]
 
-            key_to_filter = session.list(
+            filtered_node = owned_nodes if runtime_settings.filter_owned else list(session.repository.graph.keys())
-                filter_owner=settings.username) if runtime_settings.filter_owned else session.list()
 
-            client_keys = [key for key in key_to_filter
+            if runtime_settings.filter_name:
-                           if session.repository.get_node(key).str_type
+                filtered_node = [n for n in filtered_node if runtime_settings.filter_name.lower() in session.repository.graph.get(n).data.get('name').lower()]
-                           in types_filter]
 
-            if client_keys:
+            if filtered_node:
                 col = layout.column(align=True)
-                for key in client_keys:
+                for key in filtered_node:
                     draw_property(context, col, key)
-
             else:
-                row.label(text="Empty")
+                layout.row().label(text="Empty")
 
         elif session.state == STATE_LOBBY and usr and usr['admin']:
             row.operator("session.init", icon='TOOL_SETTINGS', text="Init")
@@ -599,23 +629,32 @@ class VIEW3D_PT_overlay_session(bpy.types.Panel):
     def draw(self, context):
         layout = self.layout
 
-        view = context.space_data
-        overlay = view.overlay
-        display_all = overlay.show_overlays
-
-        col = layout.column()
-
-        row = col.row(align=True)
         settings = context.window_manager.session
+        pref = get_preferences()
         layout.active = settings.enable_presence
-        col = layout.column()
-        col.prop(settings, "presence_show_session_status")
-        col.prop(settings, "presence_show_selected")
-        col.prop(settings, "presence_show_user")
         
-        row = layout.column()
+        row = layout.row()
-        row.active = settings.presence_show_user
+        row = row.grid_flow(row_major=True, columns=0, even_columns=True, even_rows=False, align=True)
-        row.prop(settings, "presence_show_far_user")
+        row.prop(settings, "presence_show_selected",text="",icon_only=True, icon='CUBE')
+        row.prop(settings, "presence_show_user", text="",icon_only=True, icon='CAMERA_DATA')
+        row.prop(settings, "presence_show_mode", text="",icon_only=True, icon='OBJECT_DATAMODE')
+        row.prop(settings, "presence_show_far_user", text="",icon_only=True, icon='SCENE_DATA')
+        
+        col = layout.column()
+        if settings.presence_show_mode :
+            row = col.column()
+            row.prop(pref, "presence_mode_distance", expand=True)
+        
+        col.prop(settings, "presence_show_session_status")
+        if settings.presence_show_session_status :
+            row = col.column()
+            row.active = settings.presence_show_session_status
+            row.prop(pref, "presence_hud_scale", expand=True)
+            row = col.column(align=True)
+            row.active = settings.presence_show_session_status
+            row.prop(pref, "presence_hud_hpos", expand=True)
+            row.prop(pref, "presence_hud_vpos", expand=True)
+        
 
 classes = (
     SESSION_UL_users,

multi_user/utils.py

@@ -38,6 +38,14 @@ from replication.constants import (STATE_ACTIVE, STATE_AUTH,
                                   STATE_LOBBY,
                                   CONNECTING)
 
+CLEARED_DATABLOCKS = ['actions', 'armatures', 'cache_files', 'cameras',
+                     'collections', 'curves', 'filepath', 'fonts',
+                     'grease_pencils', 'images', 'lattices', 'libraries',
+                     'lightprobes', 'lights', 'linestyles', 'masks',
+                     'materials', 'meshes', 'metaballs', 'movieclips',
+                     'node_groups', 'objects', 'paint_curves', 'particles',
+                     'scenes', 'shape_keys', 'sounds', 'speakers', 'texts',
+                     'textures', 'volumes', 'worlds']
 
 def find_from_attr(attr_name, attr_value, list):
     for item in list:
@@ -101,17 +109,25 @@ def get_state_str(state):
 
 
 def clean_scene():
-    for type_name in dir(bpy.data):
+    for type_name in CLEARED_DATABLOCKS:
-        try:
+        sub_collection_to_avoid = [
-            type_collection = getattr(bpy.data, type_name)
+            bpy.data.linestyles.get('LineStyle'),
-            for item in type_collection:
+            bpy.data.materials.get('Dots Stroke')
+        ]
+
+        type_collection = getattr(bpy.data, type_name)
+        items_to_remove = [i for i in type_collection if i not in sub_collection_to_avoid]
+        for item in items_to_remove:
+            try:
                 type_collection.remove(item)
-        except:
+                logging.info(item.name)
-            continue
+            except:
+                continue
 
     # Clear sequencer
     bpy.context.scene.sequence_editor_clear()
 
+
 def get_selected_objects(scene, active_view_layer):
     return [obj.uuid for obj in scene.objects if obj.select_get(view_layer=active_view_layer)]
 

scripts/get_replication_version.py

@@ -1,4 +1,4 @@
 import re
 
-init_py =  open("multi_user/__init__.py").read()
+init_py =  open("multi_user/libs/replication/replication/__init__.py").read()
 print(re.search("\d+\.\d+\.\d+\w\d+|\d+\.\d+\.\d+", init_py).group(0))

scripts/test_addon.py

@@ -13,7 +13,7 @@ def main():
     if len(sys.argv) > 2:
         blender_rev = sys.argv[2]
     else:
-        blender_rev = "2.92.0"
+        blender_rev = "2.93.0"
     
     try:
         exit_val = BAT.test_blender_addon(addon_path=addon, blender_revision=blender_rev)

tests/test_bl_types/test_action.py

@@ -32,11 +32,11 @@ def test_action(clear_blend):
 
     # Test
     implementation = BlAction()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.actions.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_armature.py

@@ -12,11 +12,11 @@ def test_armature(clear_blend):
     datablock = bpy.data.armatures[0]
     
     implementation = BlArmature()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.armatures.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_camera.py

@@ -15,11 +15,11 @@ def test_camera(clear_blend, camera_type):
     datablock.type = camera_type
 
     camera_dumper = BlCamera()
-    expected = camera_dumper._dump(datablock)
+    expected = camera_dumper.dump(datablock)
     bpy.data.cameras.remove(datablock)
 
-    test = camera_dumper._construct(expected)
+    test = camera_dumper.construct(expected)
-    camera_dumper._load(expected, test)
+    camera_dumper.load(expected, test)
-    result = camera_dumper._dump(test)
+    result = camera_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_collection.py

@@ -23,11 +23,11 @@ def test_collection(clear_blend):
 
     # Test
     implementation = BlCollection()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.collections.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_curve.py

@@ -19,11 +19,11 @@ def test_curve(clear_blend, curve_type):
     datablock = bpy.data.curves[0]
 
     implementation = BlCurve()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.curves.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_gpencil.py

@@ -13,11 +13,11 @@ def test_gpencil(clear_blend):
     datablock = bpy.data.grease_pencils[0]
 
     implementation = BlGpencil()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.grease_pencils.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lattice.py

@@ -13,11 +13,11 @@ def test_lattice(clear_blend):
     datablock = bpy.data.lattices[0]
 
     implementation = BlLattice()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.lattices.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lightprobes.py

@@ -14,11 +14,11 @@ def test_lightprobes(clear_blend, lightprobe_type):
 
     blender_light = bpy.data.lightprobes[0]
     lightprobe_dumper = BlLightprobe()
-    expected = lightprobe_dumper._dump(blender_light)
+    expected = lightprobe_dumper.dump(blender_light)
     bpy.data.lightprobes.remove(blender_light)
 
-    test = lightprobe_dumper._construct(expected)
+    test = lightprobe_dumper.construct(expected)
-    lightprobe_dumper._load(expected, test)
+    lightprobe_dumper.load(expected, test)
-    result = lightprobe_dumper._dump(test)
+    result = lightprobe_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lights.py

@@ -13,11 +13,11 @@ def test_light(clear_blend, light_type):
 
     blender_light = bpy.data.lights[0]
     light_dumper = BlLight()
-    expected = light_dumper._dump(blender_light)
+    expected = light_dumper.dump(blender_light)
     bpy.data.lights.remove(blender_light)
 
-    test = light_dumper._construct(expected)
+    test = light_dumper.construct(expected)
-    light_dumper._load(expected, test)
+    light_dumper.load(expected, test)
-    result = light_dumper._dump(test)
+    result = light_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_material.py

@@ -17,12 +17,12 @@ def test_material_nodes(clear_blend):
         datablock.node_tree.nodes.new(ntype) 
 
     implementation = BlMaterial()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.materials.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)
 
@@ -32,11 +32,11 @@ def test_material_gpencil(clear_blend):
     bpy.data.materials.create_gpencil_data(datablock)
 
     implementation = BlMaterial()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.materials.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_mesh.py

@@ -18,11 +18,11 @@ def test_mesh(clear_blend, mesh_type):
     
     # Test
     implementation = BlMesh()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.meshes.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_metaball.py

@@ -13,11 +13,11 @@ def test_metaball(clear_blend, metaballs_type):
 
     datablock = bpy.data.metaballs[0]
     dumper = BlMetaball()
-    expected = dumper._dump(datablock)
+    expected = dumper.dump(datablock)
     bpy.data.metaballs.remove(datablock)
 
-    test = dumper._construct(expected)
+    test = dumper.construct(expected)
-    dumper._load(expected, test)
+    dumper.load(expected, test)
-    result = dumper._dump(test)
+    result = dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_object.py

@@ -65,11 +65,11 @@ def test_object(clear_blend):
     datablock.shape_key_add(name='shape2')
 
     implementation = BlObject()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.objects.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
     print(DeepDiff(expected, result))
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_scene.py

@@ -12,14 +12,16 @@ def test_scene(clear_blend):
     get_preferences().sync_flags.sync_render_settings = True
 
     datablock = bpy.data.scenes.new("toto")
+    datablock.timeline_markers.new('toto', frame=10)
+    datablock.timeline_markers.new('tata', frame=1)
     datablock.view_settings.use_curve_mapping = True
     # Test
     implementation = BlScene()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.scenes.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_speaker.py

@@ -12,11 +12,11 @@ def test_speaker(clear_blend):
     datablock = bpy.data.speakers[0]
     
     implementation = BlSpeaker()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.speakers.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_texture.py

@@ -14,11 +14,11 @@ def test_texture(clear_blend, texture_type):
     datablock = bpy.data.textures.new('test', texture_type)
 
     implementation = BlTexture()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.textures.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_volume.py

@@ -11,11 +11,11 @@ def test_volume(clear_blend):
     datablock = bpy.data.volumes.new("Test")
 
     implementation = BlVolume()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.volumes.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_world.py

@@ -12,11 +12,11 @@ def test_world(clear_blend):
     datablock.use_nodes = True
     
     implementation = BlWorld()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.worlds.remove(datablock)
 
-    test = implementation._construct(expected)
+    test = implementation.construct(expected)
-    implementation._load(expected, test)
+    implementation.load(expected, test)
-    result = implementation._dump(test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)