fix: scene cleaning

Resolve "Filter correctly distant updates in the depsgraph handler"

See merge request slumber/multi-user!126

.gitignore

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

.gitlab-ci.yml

@@ -0,0 +1,13 @@
+stages:
+  - test
+  - build
+  - deploy
+  - doc
+
+
+
+include:
+  - local: .gitlab/ci/test.gitlab-ci.yml
+  - local: .gitlab/ci/build.gitlab-ci.yml
+  - local: .gitlab/ci/deploy.gitlab-ci.yml
+  - local: .gitlab/ci/doc.gitlab-ci.yml

.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

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

@@ -108,36 +108,69 @@ Before starting make sure that you have access to the session IP address and por
 1. Fill in your user information
 --------------------------------
 
-Follow the user-info_ section for this step.
+Joining a server 
+=======================
 
-----------------
-2. Network setup
-----------------
+--------------
+Network setup
+--------------
 
 In the network panel, select **JOIN**.
 The **join sub-panel** (see image below) allows you to configure your client to join a
 collaborative session which is already hosted.
 
-.. figure:: img/quickstart_join.png
-   :align: center
-   :alt: Connect menu
+.. figure:: img/server_preset_image_normal_server.png
+    :align: center
+    :width: 200px
 
-   Connection panel
+    Connection pannel
 
 Fill in the fields with your information:
 
 - **IP**: the host's IP address.
 - **Port**: the host's port number.
-- **Connect as admin**: connect yourself with **admin rights** (see :ref:`admin` ) to the session.
-
-.. Maybe something more explicit here
-
-.. note::
-   Additional configuration settings can be found in the :ref:`advanced` section.
 
 Once you've configured every field, hit the button **CONNECT** to join the session !
 When the :ref:`session-status` is **ONLINE** you are online and ready to start co-creating.
 
+.. note::
+   
+   If you want to have **administrator rights** (see :ref:`admin` ) on the server, just enter the password created by the host in the **Connect as admin** section
+
+    .. figure:: img/server_preset_image_admin.png
+        :align: center
+        :width: 200px
+
+        Admin password
+
+---------------
+Server presets
+---------------
+
+You can save your server presets in a preset list below the 'JOIN' and 'HOST' buttons. This allows you to quickly access and manage your servers.
+
+To add a server, first enter the ip address and the port (plus the password if needed), then click on the + icon to add a name to your preset. To remove a server from the list, select it and click on the - icon.
+
+.. figure:: img/server_preset_exemple.gif
+    :align: center
+    :width: 200px
+
+.. warning:: Be careful, if you don't rename your new preset, or if it has the same name as an existing preset, the old preset will be overwritten.
+
+    .. figure:: img/server_preset_image_report.png
+        :align: center
+        :width: 200px
+
+.. note:: 
+   
+   Two presets are already present when the addon is launched:
+
+  - The 'localhost' preset, to host and join a local session quickly
+  - The 'public session' preset, to join the public sessions of the multi-user server (official discord to participate : https://discord.gg/aBPvGws)
+
+.. note::
+   Additional configuration settings can be found in the :ref:`advanced` section.
+
 .. note::
    When starting a **dedicated server**, the session status screen will take you to the **LOBBY**, awaiting an admin to start the session.
 

docs/tutorials/hosting_guide.rst

@@ -76,7 +76,7 @@ Hit 'Create a network'(see image below) and go to the network settings.
     :align: center
     :width: 450px
 
-    Network page
+    Admin password
 
 Now that the network is created, let's configure it.
 

multi_user/__init__.py

@@ -19,7 +19,7 @@
 bl_info = {
     "name": "Multi-User",
     "author": "Swann Martinez",
-    "version": (0, 3, 0),
+    "version": (0, 5, 0),
     "description": "Enable real-time collaborative workflow inside blender",
     "blender": (2, 82, 0),
     "location": "3D View > Sidebar > Multi-User tab",
@@ -41,11 +41,12 @@ import bpy
 from bpy.app.handlers import persistent
 
 from . import environment
-from uuid import uuid4
-LIBS = os.path.dirname(os.path.abspath(__file__))+"/libs/replication"
+
 
 module_error_msg = "Insufficient rights to install the multi-user \
                 dependencies, aunch blender with administrator rights."
+
+
 def register():
     # Setup logging policy
     logging.basicConfig(
@@ -53,17 +54,12 @@ def register():
         datefmt='%H:%M:%S',
         level=logging.INFO)
 
-    for module_name in list(sys.modules.keys()):
-        if 'replication' in module_name:
-            del sys.modules[module_name]
-
-    if LIBS not in sys.path:
-        logging.info('Adding local modules dir to the path')
-        sys.path.insert(0, LIBS)
-    
     try:
+        environment.register()
+
         from . import presence
         from . import operators
+        from . import handlers
         from . import ui
         from . import preferences
         from . import addon_updater_ops
@@ -72,10 +68,11 @@ 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)
-        logging.error(e)
+        logging.error(module_error_msg)
  
     bpy.types.WindowManager.session = bpy.props.PointerProperty(
         type=preferences.SessionProps)
@@ -92,6 +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
@@ -101,6 +99,7 @@ def unregister():
     presence.unregister()
     addon_updater_ops.unregister()
     ui.unregister()
+    handlers.unregister()
     operators.unregister()
     preferences.unregister()
 
@@ -108,3 +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(
-			self.form_repo_url(updater),
-			"/repository/archive.zip?sha=",
-			branch)
+		return f"https://gitlab.com/slumber/multi-user/-/jobs/artifacts/{branch}/download?job=build"
 
 	def get_zip_url(self, sha, updater):
 		return "{base}/repository/archive.zip?sha={sha}".format(

multi_user/bl_types/__init__.py

@@ -16,38 +16,40 @@
 # ##### END GPL LICENSE BLOCK #####
 
 import bpy
-from replication.protocol import ReplicatedDatablock
 
 __all__ = [
     'bl_object',
     'bl_mesh',
-    # 'bl_camera',
+    'bl_camera',
     'bl_collection',
-    # 'bl_curve',
-    # 'bl_gpencil',
-    # 'bl_image',
-    # 'bl_light',
+    'bl_curve',
+    'bl_gpencil',
+    'bl_image',
+    'bl_light',
     'bl_scene',
     'bl_material',
-    # 'bl_library',
-    # 'bl_armature',
-    # 'bl_action',
-    # 'bl_world',
-    # 'bl_metaball',
-    # 'bl_lattice',
-    # 'bl_lightprobe',
-    # 'bl_speaker',
-    # 'bl_font',
-    # 'bl_sound',
-    # 'bl_file',
-    # 'bl_sequencer',
-    # 'bl_node_group',
-    # 'bl_texture',
-    # "bl_particle",
+    'bl_armature',
+    'bl_action',
+    'bl_world',
+    'bl_metaball',
+    'bl_lattice',
+    'bl_lightprobe',
+    'bl_speaker',
+    'bl_font',
+    'bl_sound',
+    'bl_file',
+    'bl_node_group',
+    'bl_texture',
+    "bl_particle",
 ]  # Order here defines execution order
 
-# if bpy.app.version[1] >= 91:
-#     __all__.append('bl_volume')
+if bpy.app.version[1] >= 91:
+    __all__.append('bl_volume')
+
+from . import *
+
+def types_to_register():
+    return __all__
 
 from replication.protocol import DataTranslationProtocol
 

multi_user/bl_types/bl_action.py

@@ -24,14 +24,9 @@ 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 stamp_uuid
+    Dumper, Loader, np_dump_collection, np_load_collection, remove_items_from_dict)
 from replication.protocol import ReplicatedDatablock
-from replication.objects import Node
+from .bl_datablock import resolve_datablock_from_uuid
 
 KEYFRAME = [
     'amplitude',
@@ -46,7 +41,6 @@ KEYFRAME = [
     'interpolation',
 ]
 
-
 def has_action(datablock):
     """ Check if the datablock datablock has actions
     """
@@ -75,8 +69,7 @@ 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'])
+    new_driver = drivers.new(src_driver['data_path'], index=src_driver['array_index'])
 
     # Settings
     new_driver.driver.type = src_driver_data['type']
@@ -92,10 +85,10 @@ def load_driver(target_datablock, src_driver):
 
         for src_target in src_var_data['targets']:
             src_target_data = src_var_data['targets'][src_target]
-            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)
+            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
@@ -128,7 +121,6 @@ def dump_fcurve(fcurve: bpy.types.FCurve, use_numpy: bool = True) -> dict:
         points = fcurve.keyframe_points
         fcurve_data['keyframes_count'] = len(fcurve.keyframe_points)
         fcurve_data['keyframe_points'] = np_dump_collection(points, KEYFRAME)
-
     else:  # Legacy method
         dumper = Dumper()
         fcurve_data["keyframe_points"] = []
@@ -138,6 +130,18 @@ def dump_fcurve(fcurve: bpy.types.FCurve, use_numpy: bool = True) -> dict:
                 dumper.dump(k)
             )
 
+    if fcurve.modifiers:
+        dumper = Dumper()
+        dumper.exclude_filter = [
+            'is_valid',
+            'active'
+        ]
+        dumped_modifiers = []
+        for modfifier in fcurve.modifiers:
+            dumped_modifiers.append(dumper.dump(modfifier))
+
+        fcurve_data['modifiers'] = dumped_modifiers
+
     return fcurve_data
 
 
@@ -150,7 +154,7 @@ def load_fcurve(fcurve_data, fcurve):
         :type fcurve: bpy.types.FCurve
     """
     use_numpy = fcurve_data.get('use_numpy')
-
+    loader = Loader()
     keyframe_points = fcurve.keyframe_points
 
     # Remove all keyframe points
@@ -195,37 +199,53 @@ def load_fcurve(fcurve_data, fcurve):
 
             fcurve.update()
 
+    dumped_fcurve_modifiers = fcurve_data.get('modifiers', None)
 
-def dump_animation_data(datablock, data):
+    if dumped_fcurve_modifiers:
+        # clear modifiers
+        for fmod in fcurve.modifiers:
+            fcurve.modifiers.remove(fmod)
+
+        # Load each modifiers in order
+        for modifier_data in dumped_fcurve_modifiers:
+            modifier = fcurve.modifiers.new(modifier_data['type'])
+
+            loader.load(modifier, modifier_data)
+    elif fcurve.modifiers:
+        for fmod in fcurve.modifiers:
+            fcurve.modifiers.remove(fmod)
+
+
+def dump_animation_data(datablock):
+    animation_data = {}
     if has_action(datablock):
-        dumper = Dumper()
-        dumper.include_filter = ['action']
-        data['animation_data'] = dumper.dump(datablock.animation_data)
-
+            animation_data['action'] = datablock.animation_data.action.name
     if has_driver(datablock):
-        dumped_drivers = {'animation_data': {'drivers': []}}
+        animation_data['drivers'] = []
         for driver in datablock.animation_data.drivers:
-            dumped_drivers['animation_data']['drivers'].append(
-                dump_driver(driver))
+            animation_data['drivers'].append(dump_driver(driver))
 
-        data.update(dumped_drivers)
+    return animation_data
 
 
-def load_animation_data(data, datablock):
+def load_animation_data(animation_data, datablock):
     # Load animation data
-    if 'animation_data' in data.keys():
+    if animation_data:
         if datablock.animation_data is None:
             datablock.animation_data_create()
 
         for d in datablock.animation_data.drivers:
             datablock.animation_data.drivers.remove(d)
 
-        if 'drivers' in data['animation_data']:
-            for driver in data['animation_data']['drivers']:
+        if 'drivers' in animation_data:
+            for driver in animation_data['drivers']:
                 load_driver(datablock, driver)
 
-        if 'action' in data['animation_data']:
-            datablock.animation_data.action = bpy.data.actions[data['animation_data']['action']]
+        if 'action' in animation_data:
+            datablock.animation_data.action = bpy.data.actions[animation_data['action']]
+        elif datablock.animation_data.action:
+            datablock.animation_data.action = None
+
     # Remove existing animation data if there is not more to load
     elif hasattr(datablock, 'animation_data') and datablock.animation_data:
         datablock.animation_data_clear()
@@ -239,6 +259,8 @@ def resolve_animation_dependencies(datablock):
 
 
 class BlAction(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "actions"
     bl_class = bpy.types.Action
     bl_check_common = False
@@ -271,8 +293,6 @@ class BlAction(ReplicatedDatablock):
 
     @staticmethod
     def dump(datablock: object) -> dict:
-        stamp_uuid(datablock)
-
         dumper = Dumper()
         dumper.exclude_filter = [
             'name_full',
@@ -295,3 +315,15 @@ class BlAction(ReplicatedDatablock):
             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
@@ -35,16 +36,20 @@ 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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.armatures.new(data["name"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
         # Load parent object
         parent_object = utils.find_from_attr(
@@ -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:
-                new_bone = target.edit_bones.new(bone)
+            if bone not in datablock.edit_bones:
+                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(datablock: object) -> dict:
-        assert(instance)
+        load_animation_data(data.get('animation_data'), datablock)
 
+    @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

@@ -20,47 +20,58 @@ 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
 
+
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.cameras.new(data["name"])
 
 
+    @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()
 
         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)
 
+                    img_user = img_data.get('image_user')
+                    if img_user:
+                        loader.load(target_img.image_user, img_user)
+
+
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
-
-        # TODO: background image support
-        
         dumper = Dumper()
         dumper.depth = 3
         dumper.include_filter = [
@@ -101,9 +112,26 @@ class BlCamera(BlDatablock):
             'scale',
             'use_flip_x',
             'use_flip_y',
-            'image'
+            'image_user',
+            'image',
+            'frame_duration',
+            'frame_start',
+            'frame_offset',
+            'use_cyclic',
+            'use_auto_refresh'
         ]
-        return dumper.dump(instance)
+        data =  dumper.dump(datablock)
+        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
+
+    @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]:
@@ -112,4 +140,9 @@ class BlCamera(BlDatablock):
             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 deepdiff import DeepDiff, Delta
+
 from .. import utils
-from .dump_anything import Loader, Dumper
 from replication.protocol import ReplicatedDatablock
-from replication.objects import Node
+from .dump_anything import Loader, Dumper
+from .bl_datablock import resolve_datablock_from_uuid
 
 def dump_collection_children(collection):
     collection_children = []
@@ -88,14 +90,16 @@ class BlCollection(ReplicatedDatablock):
     bl_check_common = True
     bl_reload_parent = False
 
+    use_delta = True
+
     @staticmethod
     def construct(data: dict) -> object:
-        datablock = bpy.data.collections.new(node.data["name"])
-        return datablock
+        instance = bpy.data.collections.new(data["name"])
+        return instance
+
 
     @staticmethod
     def load(data: dict, datablock: object):
-        data = node.data
         loader = Loader()
         loader.load(datablock, data)
 
@@ -109,10 +113,9 @@ class BlCollection(ReplicatedDatablock):
         # Keep other user from deleting collection object by flushing their history
         utils.flush_history()
 
+
     @staticmethod
     def dump(datablock: object) -> dict:
-        assert(datablock)
-
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
@@ -129,9 +132,33 @@ class BlCollection(ReplicatedDatablock):
 
         return data
 
+
+    @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 .bl_datablock import BlDatablock
+from ..utils import get_preferences
+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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.curves.new(data["name"], data["type"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
-        loader = Loader()
-        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)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
         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)
@@ -211,19 +220,25 @@ 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
 
+    @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 = datablock
 
@@ -234,15 +249,19 @@ class BlCurve(BlDatablock):
                 curve.font_bold_italic,
                 curve.font_italic])
 
-        for material in curve.materials:
+        for material in datablock.materials:
             if material:
                 deps.append(material)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-    def diff(self):
-        if 'EDIT' in bpy.context.mode \
-                and not self.preferences.sync_flags.sync_during_editmode:
-            return False
-        else:
-            return super().diff()
+    @staticmethod
+    def needs_update(datablock: object, data: dict) -> bool:
+        return 'EDIT' not in bpy.context.mode \
+            or get_preferences().sync_flags.sync_during_editmode
+
+
+_type = [bpy.types.Curve, bpy.types.TextCurve]
+_class = BlCurve

multi_user/bl_types/bl_datablock.py

@@ -23,14 +23,10 @@ import bpy
 import mathutils
 from replication.constants import DIFF_BINARY, DIFF_JSON, UP
 from replication.protocol import ReplicatedDatablock
-from replication.objects import Node
-
-from uuid import uuid4
 
 from .. import utils
 from .dump_anything import Dumper, Loader
 
-
 def get_datablock_from_uuid(uuid, default, ignore=[]):
     if not uuid:
         return default
@@ -42,18 +38,8 @@ def get_datablock_from_uuid(uuid, default, ignore=[]):
                     return item
     return default
 
-
-def resolve_datablock_from_root(node:Node, root)->object:
-    datablock_ref = utils.find_from_attr('uuid', node.uuid, root)
-
-    if not datablock_ref:
-        try:
-            datablock_ref = root[node.data['name']]
-        except Exception:
-            pass
-
-    return datablock_ref
-
-def stamp_uuid(datablock):
-    if not datablock.uuid:
-        datablock.uuid = str(uuid4())
+def resolve_datablock_from_uuid(uuid, bpy_collection):
+    for item in bpy_collection:
+        if getattr(item, 'uuid', None) == uuid:
+            return item
+    return None

multi_user/bl_types/bl_file.py

@@ -19,7 +19,7 @@
 import logging
 import os
 import sys
-from pathlib import Path
+from pathlib import Path, WindowsPath, PosixPath
 
 import bpy
 import mathutils
@@ -27,6 +27,7 @@ from replication.constants import DIFF_BINARY, UP
 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):
-        super().__init__(*args, **kwargs)
-        self.instance = kwargs.get('instance', None)
+    @staticmethod
+    def construct(data: dict) -> object:
+        return Path(get_filepath(data['name']))
 
-        if self.instance and not self.instance.exists():
-            raise FileNotFoundError(str(self.instance))
+    @staticmethod
+    def resolve(data: dict) -> object:
+        return Path(get_filepath(data['name']))
 
-        self.preferences = utils.get_preferences()
-
-    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):
+    @staticmethod
+    def dump(datablock: object) -> dict:
         """
         Read the file and return a dict as:
         {
@@ -96,44 +80,62 @@ class BlFile(ReplicatedDatablock):
         logging.info(f"Extracting file metadata")
 
         data = {
-            'name': self.instance.name,
+            'name': datablock.name,
         }
 
-        logging.info(
-            f"Reading {self.instance.name} content: {self.instance.stat().st_size} bytes")
+        logging.info(f"Reading {datablock.name} content: {datablock.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:
-                del self.data['file']
+            if get_preferences().clear_memory_filecache:
+                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):
-        if self.preferences.clear_memory_filecache:
+    @staticmethod
+    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:
-            memory_size = sys.getsizeof(self.data['file'])-33
-            disk_size = self.instance.stat().st_size
-            return memory_size != disk_size
+            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
+
+_type = [WindowsPath, PosixPath]
+_class = BlFile

multi_user/bl_types/bl_font.py

@@ -22,18 +22,19 @@ 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(BlDatablock):
+class BlFont(ReplicatedDatablock):
     bl_id = "fonts"
     bl_class = bpy.types.VectorFont
     bl_check_common = False
     bl_icon = 'FILE_FONT'
     bl_reload_parent = False
 
+    @staticmethod
     def construct(data: dict) -> object:
         filename = data.get('filename')
 
@@ -42,25 +43,29 @@ 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):
-        if instance.filepath  == '<builtin>':
+    @staticmethod
+    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):
-        return False
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.fonts)
 
     @staticmethod
     def resolve_deps(datablock: object) -> [object]:
@@ -71,3 +76,10 @@ class BlFont(BlDatablock):
             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 +24,11 @@ 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
+from .bl_action import dump_animation_data, load_animation_data, resolve_animation_dependencies
+from ..utils import get_preferences
 
-# GPencil data api is structured as it follow: 
-# GP-Object --> GP-Layers --> GP-Frames --> GP-Strokes --> GP-Stroke-Points
 
 STROKE_POINT = [
     'co',
@@ -113,6 +114,7 @@ def load_stroke(stroke_data, stroke):
     # fix fill issues
     stroke.uv_scale = stroke_data["uv_scale"]
 
+
 def dump_frame(frame):
     """ Dump a grease pencil frame to a dict
 
@@ -151,6 +153,7 @@ def load_frame(frame_data, frame):
 
     np_load_collection(frame_data['strokes'], frame.strokes, STROKE)
 
+
 def dump_layer(layer):
     """ Dump a grease pencil layer
 
@@ -228,47 +231,58 @@ 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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.grease_pencils.new(data["name"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
-        target.materials.clear()
+        datablock.materials.clear()
         if "materials" in data.keys():
             for mat in data['materials']:
-                target.materials.append(bpy.data.materials[mat])
+                datablock.materials.append(bpy.data.materials[mat])
 
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
         # TODO: reuse existing layer
-        for layer in target.layers:
-            target.layers.remove(layer)
+        for layer in datablock.layers:
+            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():
-                target_layer = target.layers.new(data["layers"][layer]["info"])
+                # if layer not in datablock.layers.keys():
+                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:
-        assert(instance)
         dumper = Dumper()
         dumper.depth = 2
         dumper.include_filter = [
@@ -279,17 +293,22 @@ class BlGpencil(BlDatablock):
             'pixel_factor',
             'stroke_depth_order'
         ]
-        data = dumper.dump(instance)
+        data = dumper.dump(datablock)
 
         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
 
+    @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 = []
@@ -299,17 +318,12 @@ class BlGpencil(BlDatablock):
 
         return deps
 
-    def layer_changed(self):
-        return self.instance.layers.active.info != self.data["active_layers"]
+    @staticmethod
+    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
 
-    def frame_changed(self):
-        return  bpy.context.scene.frame_current != self.data["eval_frame"]
-
-    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
+_type = bpy.types.GreasePencil
+_class = BlGpencil

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',
@@ -48,13 +51,14 @@ 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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.images.new(
             name=data['name'],
@@ -62,18 +66,21 @@ class BlImage(BlDatablock):
             height=data['size'][1]
         )
 
-    def load(self, data, target):
+    @staticmethod
+    def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(data, target)
+        loader.load(data, datablock)
 
-        target.source = 'FILE'
-        target.filepath_raw = get_filepath(data['filename'])
-        target.colorspace_settings.name = data["colorspace_settings"]["name"]
+        datablock.source = 'FILE'
+        datablock.filepath_raw = get_filepath(data['filename'])
+        color_space_name = data["colorspace_settings"]["name"]
 
-    def dump(self, instance=None):
-        assert(instance)
+        if color_space_name:
+            datablock.colorspace_settings.name = color_space_name
 
-        filename = Path(instance.filepath).name
+    @staticmethod
+    def dump(datablock: object) -> dict:
+        filename = Path(datablock.filepath).name
 
         data = {
             "filename": filename
@@ -83,23 +90,20 @@ class BlImage(BlDatablock):
         dumper.depth = 2
         dumper.include_filter = [
             "name",
+            # 'source',
             'size',
             'height',
             'alpha',
             'float_buffer',
             'alpha_mode',
             'colorspace_settings']
-        data.update(dumper.dump(instance))
+        data.update(dumper.dump(datablock))
         return data
 
-    def diff(self):
-        if self.instance.is_dirty:
-            self.instance.save()
-
-        if self.instance and (self.instance.name != self.data['name']):
-            return True
-        else:
-            return False
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.images)
 
     @staticmethod
     def resolve_deps(datablock: object) -> [object]:
@@ -122,3 +126,16 @@ class BlImage(BlDatablock):
             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()
+
+        if not data or (datablock and (datablock.name != data.get('name'))):
+            return True
+        else:
+            return False
+
+_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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.lattices.new(data["name"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
-        if target.is_editmode:
+        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)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        if instance.is_editmode:
+        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['points'] = np_dump_collection(instance.points, POINT)
+        data = dumper.dump(datablock)
 
+        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_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
 
+    @staticmethod
     def construct(data: dict) -> object:
-        return bpy.data.lights.new(data["name"], data["type"])
+        instance = bpy.data.lights.new(data["name"], data["type"])
+        instance.uuid = data.get("uuid")
+        return instance
 
+    @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)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
         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

@@ -21,16 +21,19 @@ 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
 
+    @staticmethod
     def construct(data: dict) -> object:
         type = 'CUBE' if data['type'] == 'CUBEMAP' else data['type']
         # See https://developer.blender.org/D6396
@@ -39,12 +42,13 @@ class BlLightprobe(BlDatablock):
         else:
             logging.warning("Lightprobe replication only supported since 2.83. See https://developer.blender.org/D6396")
 
+    @staticmethod
     def load(data: dict, datablock: object):
         loader = Loader()
-        loader.load(target, data)
+        loader.load(datablock, data)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
         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

@@ -24,9 +24,10 @@ import re
 from uuid import uuid4
 
 from .dump_anything import Loader, Dumper
-from .bl_datablock import get_datablock_from_uuid, stamp_uuid
 from replication.protocol import ReplicatedDatablock
-from replication.objects import Node
+
+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']
@@ -36,7 +37,7 @@ def load_node(node_data: dict, node_tree: bpy.types.ShaderNodeTree):
 
         :arg node_data: dumped node data
         :type node_data: dict
-        :arg node_tree: datablock node_tree
+        :arg node_tree: target node_tree
         :type node_tree: bpy.types.NodeTree
     """
     loader = Loader()
@@ -47,7 +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)
@@ -90,7 +95,7 @@ def load_node(node_data: dict, node_tree: bpy.types.ShaderNodeTree):
 def dump_node(node: bpy.types.ShaderNode) -> dict:
     """ Dump a single node to a dict
 
-        :arg node: datablock node
+        :arg node: target node
         :type node: bpy.types.Node
         :retrun: dict
     """
@@ -251,7 +256,7 @@ def dump_node_tree(node_tree: bpy.types.ShaderNodeTree) -> dict:
 def dump_node_tree_sockets(sockets: bpy.types.Collection) -> dict:
     """ dump sockets of a shader_node_tree
 
-        :arg target_node_tree: datablock node_tree
+        :arg target_node_tree: target node_tree
         :type target_node_tree: bpy.types.NodeTree
         :arg socket_id: socket identifer 
         :type socket_id: str
@@ -274,7 +279,7 @@ def load_node_tree_sockets(sockets: bpy.types.Collection,
                            sockets_data: dict):
     """ load sockets of a shader_node_tree
 
-        :arg target_node_tree: datablock node_tree
+        :arg target_node_tree: target node_tree
         :type target_node_tree: bpy.types.NodeTree
         :arg socket_id: socket identifer 
         :type socket_id: str
@@ -302,7 +307,7 @@ def load_node_tree(node_tree_data: dict, target_node_tree: bpy.types.ShaderNodeT
 
         :arg node_tree_data: dumped node data
         :type node_tree_data: dict
-        :arg target_node_tree: datablock node_tree
+        :arg target_node_tree: target node_tree
         :type target_node_tree: bpy.types.NodeTree
     """
     # TODO: load only required nodes
@@ -375,7 +380,7 @@ def load_materials_slots(src_materials: list, dst_materials: bpy.types.bpy_prop_
 
         :arg src_materials: dumped material collection (ex: object.materials)
         :type src_materials: list of tuples (uuid, name) 
-        :arg dst_materials: datablock material collection pointer
+        :arg dst_materials: target material collection pointer
         :type dst_materials: bpy.types.bpy_prop_collection
     """
     # MATERIAL SLOTS
@@ -392,6 +397,8 @@ def load_materials_slots(src_materials: list, dst_materials: bpy.types.bpy_prop_
 
 
 class BlMaterial(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "materials"
     bl_class = bpy.types.Material
     bl_check_common = False
@@ -404,7 +411,8 @@ class BlMaterial(ReplicatedDatablock):
 
     @staticmethod
     def load(data: dict, datablock: object):
-        data = data
+        load_animation_data(data.get('animation_data'), datablock)
+
         loader = Loader()
 
         is_grease_pencil = data.get('is_grease_pencil')
@@ -424,8 +432,6 @@ class BlMaterial(ReplicatedDatablock):
 
     @staticmethod
     def dump(datablock: object) -> dict:
-        stamp_uuid(datablock)
-
         mat_dumper = Dumper()
         mat_dumper.depth = 2
         mat_dumper.include_filter = [
@@ -491,16 +497,23 @@ class BlMaterial(ReplicatedDatablock):
         elif datablock.use_nodes:
             data['node_tree'] = dump_node_tree(datablock.node_tree)
 
+        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.materials)
+
     @staticmethod
     def resolve_deps(datablock: object) -> [object]:
-        # TODO: resolve node group deps
         deps = []
 
         if datablock.use_nodes:
             deps.extend(get_node_tree_dependencies(datablock.node_tree))
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
 _type = bpy.types.Material

multi_user/bl_types/bl_mesh.py

@@ -22,20 +22,16 @@ import mathutils
 import logging
 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 .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 replication.protocol import ReplicatedDatablock
-from replication.objects import Node
 
-from .bl_datablock import get_datablock_from_uuid, stamp_uuid
+from .bl_datablock import get_datablock_from_uuid
 from .bl_material import dump_materials_slots, load_materials_slots
-
-from ..preferences import get_preferences
+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']
 
@@ -58,8 +54,9 @@ POLYGON = [
     'material_index',
 ]
 
-
 class BlMesh(ReplicatedDatablock):
+    use_delta = True
+
     bl_id = "meshes"
     bl_class = bpy.types.Mesh
     bl_check_common = False
@@ -68,17 +65,15 @@ class BlMesh(ReplicatedDatablock):
 
     @staticmethod
     def construct(data: dict) -> object:
-        datablock = bpy.data.meshes.new(data["name"])
-        datablock.uuid = data['uuid']
-        return datablock
+        return bpy.data.meshes.new(data.get("name"))
 
     @staticmethod
     def load(data: dict, datablock: object):
-        data = data
-
         if not datablock or datablock.is_editmode:
             raise ContextError
         else:
+            load_animation_data(data.get('animation_data'), datablock)
+
             loader = Loader()
             loader.load(datablock, data)
 
@@ -100,7 +95,7 @@ class BlMesh(ReplicatedDatablock):
             np_load_collection(data['vertices'], datablock.vertices, VERTICE)
             np_load_collection(data['edges'], datablock.edges, EDGE)
             np_load_collection(data['loops'], datablock.loops, LOOP)
-            np_load_collection(data["polygons"], datablock.polygons, POLYGON)
+            np_load_collection(data["polygons"],datablock.polygons, POLYGON)
 
             # UV Layers
             if 'uv_layers' in data.keys():
@@ -129,8 +124,6 @@ class BlMesh(ReplicatedDatablock):
 
     @staticmethod
     def dump(datablock: object) -> dict:
-        stamp_uuid(datablock)
-
         if (datablock.is_editmode or bpy.context.mode == "SCULPT") and not get_preferences().sync_flags.sync_during_editmode:
             raise ContextError("Mesh is in edit mode")
         mesh = datablock
@@ -138,7 +131,6 @@ class BlMesh(ReplicatedDatablock):
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
-            'uuid'
             'name',
             'use_auto_smooth',
             'auto_smooth_angle',
@@ -148,6 +140,8 @@ class BlMesh(ReplicatedDatablock):
 
         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)
@@ -169,16 +163,14 @@ class BlMesh(ReplicatedDatablock):
             data['uv_layers'] = {}
             for layer in mesh.uv_layers:
                 data['uv_layers'][layer.name] = {}
-                data['uv_layers'][layer.name]['data'] = np_dump_collection_primitive(
-                    layer.data, 'uv')
+                data['uv_layers'][layer.name]['data'] = np_dump_collection_primitive(layer.data, 'uv')
 
         # Vertex color
         if mesh.vertex_colors:
             data['vertex_colors'] = {}
             for color_map in mesh.vertex_colors:
                 data['vertex_colors'][color_map.name] = {}
-                data['vertex_colors'][color_map.name]['data'] = np_dump_collection_primitive(
-                    color_map.data, 'color')
+                data['vertex_colors'][color_map.name]['data'] = np_dump_collection_primitive(color_map.data, 'color')
 
         # Materials
         data['materials'] = dump_materials_slots(datablock.materials)
@@ -192,14 +184,19 @@ class BlMesh(ReplicatedDatablock):
             if material:
                 deps.append(material)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         return deps
 
-    def diff(self):
-        if 'EDIT' in bpy.context.mode \
-                and not get_preferences().sync_flags.sync_during_editmode:
-            return False
-        else:
-            return super().diff()
+    @staticmethod
+    def resolve(data: dict) -> object:
+        uuid = data.get('uuid')
+        return resolve_datablock_from_uuid(uuid, bpy.data.meshes)
+
+    @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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.metaballs.new(data["name"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
-        loader = Loader()
-        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)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
@@ -98,7 +106,24 @@ class BlMetaball(BlDatablock):
             'texspace_size'
         ]
 
-        data = dumper.dump(instance)
-        data['elements'] = dump_metaball_elements(instance.elements)
+        data = dumper.dump(datablock)
+        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

@@ -20,27 +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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.node_groups.new(data["name"], data["type"])
 
+    @staticmethod
     def load(data: dict, datablock: object):
-        load_node_tree(data, target)
+        load_node_tree(data, datablock)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        return dump_node_tree(instance)
+        return dump_node_tree(datablock)
+
+    @staticmethod
+    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]:
-        return get_node_tree_dependencies(datablock)
+        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

@@ -21,17 +21,12 @@ import re
 import bpy
 import mathutils
 from replication.exception import ContextError
-from replication.objects import Node
+
 from replication.protocol import ReplicatedDatablock
-
-from .bl_datablock import get_datablock_from_uuid, stamp_uuid
-from .bl_action import (load_animation_data,
-                        dump_animation_data,
-                        resolve_animation_dependencies)
-
-from ..preferences import get_preferences
-from .bl_datablock import get_datablock_from_uuid
+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,
     Loader,
@@ -45,6 +40,14 @@ SKIN_DATA = [
     'use_root'
 ]
 
+SHAPEKEY_BLOCK_ATTR = [
+    'mute',
+    'value',
+    'slider_min',
+    'slider_max',
+]
+
+
 if bpy.app.version[1] >= 93:
     SUPPORTED_GEOMETRY_NODE_PARAMETERS = (int, str, float)
 else:
@@ -52,6 +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:
@@ -90,6 +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) 
@@ -116,6 +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
 
@@ -167,40 +173,45 @@ def load_pose(target_bone, data):
 
 
 def find_data_from_name(name=None):
-    datablock = None
+    instance = None
     if not name:
         pass
     elif name in bpy.data.meshes.keys():
-        datablock = bpy.data.meshes[name]
+        instance = bpy.data.meshes[name]
     elif name in bpy.data.lights.keys():
-        datablock = bpy.data.lights[name]
+        instance = bpy.data.lights[name]
     elif name in bpy.data.cameras.keys():
-        datablock = bpy.data.cameras[name]
+        instance = bpy.data.cameras[name]
     elif name in bpy.data.curves.keys():
-        datablock = bpy.data.curves[name]
+        instance = bpy.data.curves[name]
     elif name in bpy.data.metaballs.keys():
-        datablock = bpy.data.metaballs[name]
+        instance = bpy.data.metaballs[name]
     elif name in bpy.data.armatures.keys():
-        datablock = bpy.data.armatures[name]
+        instance = bpy.data.armatures[name]
     elif name in bpy.data.grease_pencils.keys():
-        datablock = bpy.data.grease_pencils[name]
+        instance = bpy.data.grease_pencils[name]
     elif name in bpy.data.curves.keys():
-        datablock = bpy.data.curves[name]
+        instance = bpy.data.curves[name]
     elif name in bpy.data.lattices.keys():
-        datablock = bpy.data.lattices[name]
+        instance = bpy.data.lattices[name]
     elif name in bpy.data.speakers.keys():
-        datablock = bpy.data.speakers[name]
+        instance = bpy.data.speakers[name]
     elif name in bpy.data.lightprobes.keys():
         # Only supported since 2.83
         if bpy.app.version[1] >= 83:
-            datablock = bpy.data.lightprobes[name]
+            instance = bpy.data.lightprobes[name]
         else:
             logging.warning(
                 "Lightprobe replication only supported since 2.83. See https://developer.blender.org/D6396")
     elif bpy.app.version[1] >= 91 and name in bpy.data.volumes.keys():
         # Only supported since 2.91
-        datablock = bpy.data.volumes[name]
-    return datablock
+        instance = bpy.data.volumes[name]
+    return instance
+
+
+def load_data(object, name):
+    logging.info("loading data")
+    pass
 
 
 def _is_editmode(object: bpy.types.Object) -> bool:
@@ -247,7 +258,6 @@ def find_geometry_nodes_dependencies(modifiers: bpy.types.bpy_prop_collection) -
     return dependencies
 
 
-
 def dump_vertex_groups(src_object: bpy.types.Object) -> dict:
     """ Dump object's vertex groups
 
@@ -293,43 +303,228 @@ def load_vertex_groups(dumped_vertex_groups: dict, target_object: bpy.types.Obje
             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
+
+        :param dumped_key: target key datablock
+        :type dumped_key: bpy.types.Key
+        :return: dict
+    """
+
+    dumped_key_blocks = []
+    dumper = Dumper()
+    dumper.include_filter = [
+        'name',
+        'mute',
+        'value',
+        'slider_min',
+        'slider_max',
+    ]
+    for key in target_key.key_blocks:
+        dumped_key_block = dumper.dump(key)
+        dumped_key_block['data'] = np_dump_collection(key.data, ['co'])
+        dumped_key_block['relative_key'] = key.relative_key.name
+        dumped_key_blocks.append(dumped_key_block)
+
+    return {
+        'reference_key': target_key.reference_key.name,
+        'use_relative': target_key.use_relative,
+        'key_blocks': dumped_key_blocks,
+        'animation_data': dump_animation_data(target_key)
+    }
+
+
+def load_shape_keys(dumped_shape_keys: dict, target_object: bpy.types.Object):
+    """ Load the target shape_keys datablock to a dict using numpy
+
+        :param dumped_key: src key data
+        :type dumped_key: bpy.types.Key
+        :param target_object: object used to load the shapekeys data onto
+        :type target_object: bpy.types.Object
+    """
+    loader = Loader()
+    # Remove existing ones
+    target_object.shape_key_clear()
+
+    # Create keys and load vertices coords
+    dumped_key_blocks = dumped_shape_keys.get('key_blocks')
+    for dumped_key_block in dumped_key_blocks:
+        key_block = target_object.shape_key_add(name=dumped_key_block['name'])
+
+        loader.load(key_block, dumped_key_block)
+        np_load_collection(dumped_key_block['data'], key_block.data, ['co'])
+
+    # Load relative key after all
+    for dumped_key_block in dumped_key_blocks:
+        relative_key_name = dumped_key_block.get('relative_key')
+        key_name = dumped_key_block.get('name')
+
+        target_keyblock = target_object.data.shape_keys.key_blocks[key_name]
+        relative_key = target_object.data.shape_keys.key_blocks[relative_key_name]
+
+        target_keyblock.relative_key = relative_key
+
+    # Shape keys animation data
+    anim_data = dumped_shape_keys.get('animation_data')
+
+    if anim_data:
+        load_animation_data(anim_data, target_object.data.shape_keys)
+
+
+def dump_modifiers(modifiers: bpy.types.bpy_prop_collection)->dict:
+    """ Dump all modifiers of a modifier collection into a dict
+
+        :param modifiers: modifiers
+        :type modifiers: bpy.types.bpy_prop_collection
+        :return: dict
+    """
+    dumped_modifiers = []
+    dumper = Dumper()
+    dumper.depth = 1
+    dumper.exclude_filter = ['is_active']
+
+    for modifier in modifiers:
+        dumped_modifier = dumper.dump(modifier)
+        # hack to dump geometry nodes inputs
+        if modifier.type == 'NODES':
+            dumped_inputs = dump_modifier_geometry_node_inputs(
+                modifier)
+            dumped_modifier['inputs'] = dumped_inputs
+
+        elif modifier.type == 'PARTICLE_SYSTEM':
+            dumper.exclude_filter = [
+                "is_edited",
+                "is_editable",
+                "is_global_hair"
+            ]
+            dumped_modifier['particle_system'] = dumper.dump(modifier.particle_system)
+            dumped_modifier['particle_system']['settings_uuid'] = modifier.particle_system.settings.uuid
+
+        elif modifier.type in ['SOFT_BODY', 'CLOTH']:
+            dumped_modifier['settings'] = dumper.dump(modifier.settings)
+        elif modifier.type == 'UV_PROJECT':
+            dumped_modifier['projectors'] =[p.object.name for p in modifier.projectors if p and p.object]
+
+        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
+
+        :param dumped_modifiers: modifiers to load
+        :type dumped_modifiers: dict
+        :param modifiers: target modifiers collection 
+        :type modifiers: bpy.types.bpy_prop_collection
+    """
+    loader = Loader()
+
+    for modifier in modifiers:
+        dumped_modifier = dumped_modifiers.get(modifier.name)
+        
+            
 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
 
-    is_root = False
-
     @staticmethod
-    def construct(data: dict) -> bpy.types.Object:
-        datablock = None
+    def construct(data: dict) -> object:
+        instance = None
 
         # TODO: refactoring
         object_name = data.get("name")
         data_uuid = data.get("data_uuid")
         data_id = data.get("data")
-        object_uuid = data.get('uuid')
+        data_type = data.get("type")
+
         object_data = get_datablock_from_uuid(
             data_uuid,
             find_data_from_name(data_id),
             ignore=['images'])  # TODO: use resolve_from_id
 
-        if object_data is None and data_uuid:
-            raise Exception(f"Fail to load object {data['name']}({object_uuid})")
+        if data_type != 'EMPTY' and object_data is None:
+            raise Exception(f"Fail to load object {data['name']})")
 
-        datablock = bpy.data.objects.new(object_name, object_data)
-        datablock.uuid = object_uuid
-
-        return datablock
+        return bpy.data.objects.new(object_name, object_data)
 
     @staticmethod
-    def load(data: dict, datablock: bpy.types.Object):
-        data = datablock.data
-        load_animation_data(data, datablock)
-
+    def load(data: dict, datablock: object):
         loader = Loader()
-
+        load_animation_data(data.get('animation_data'), datablock)
         data_uuid = data.get("data_uuid")
         data_id = data.get("data")
 
@@ -345,24 +540,9 @@ class BlObject(ReplicatedDatablock):
         object_data = datablock.data
 
         # SHAPE KEYS
-        if 'shape_keys' in data:
-            datablock.shape_key_clear()
-
-            # Create keys and load vertices coords
-            for key_block in data['shape_keys']['key_blocks']:
-                key_data = data['shape_keys']['key_blocks'][key_block]
-                datablock.shape_key_add(name=key_block)
-
-                loader.load(
-                    datablock.data.shape_keys.key_blocks[key_block], key_data)
-                for vert in key_data['data']:
-                    datablock.data.shape_keys.key_blocks[key_block].data[vert].co = key_data['data'][vert]['co']
-
-            # Load relative key after all
-            for key_block in data['shape_keys']['key_blocks']:
-                reference = data['shape_keys']['key_blocks'][key_block]['relative_key']
-
-                datablock.data.shape_keys.key_blocks[key_block].relative_key = datablock.data.shape_keys.key_blocks[reference]
+        shape_keys = data.get('shape_keys')
+        if shape_keys:
+            load_shape_keys(shape_keys, datablock)
 
         # Load transformation data
         loader.load(datablock, data)
@@ -388,26 +568,26 @@ class BlObject(ReplicatedDatablock):
             # Bone groups
             for bg_name in data['pose']['bone_groups']:
                 bg_data = data['pose']['bone_groups'].get(bg_name)
-                bg_datablock = datablock.pose.bone_groups.get(bg_name)
+                bg_target = datablock.pose.bone_groups.get(bg_name)
 
-                if not bg_datablock:
-                    bg_datablock = datablock.pose.bone_groups.new(name=bg_name)
+                if not bg_target:
+                    bg_target = datablock.pose.bone_groups.new(name=bg_name)
 
-                loader.load(bg_datablock, bg_data)
+                loader.load(bg_target, bg_data)
                 # datablock.pose.bone_groups.get
 
             # Bones
             for bone in data['pose']['bones']:
-                datablock_bone = datablock.pose.bones.get(bone)
+                target_bone = datablock.pose.bones.get(bone)
                 bone_data = data['pose']['bones'].get(bone)
 
                 if 'constraints' in bone_data.keys():
-                    loader.load(datablock_bone, bone_data['constraints'])
+                    loader.load(target_bone, bone_data['constraints'])
 
-                load_pose(datablock_bone, bone_data)
+                load_pose(target_bone, bone_data)
 
                 if 'bone_index' in bone_data.keys():
-                    datablock_bone.bone_group = datablock.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 datablock.empty_display_type == "IMAGE":
@@ -428,34 +608,12 @@ class BlObject(ReplicatedDatablock):
                 and 'cycles_visibility' in data:
             loader.load(datablock.cycles_visibility, data['cycles_visibility'])
 
-        # TODO: handle geometry nodes input from dump_anything
         if hasattr(datablock, 'modifiers'):
-            nodes_modifiers = [
-                mod for mod in datablock.modifiers if mod.type == 'NODES']
-            for modifier in nodes_modifiers:
-                load_modifier_geometry_node_inputs(
-                    data['modifiers'][modifier.name], modifier)
+            load_modifiers(data['modifiers'], datablock.modifiers)
 
-            particles_modifiers = [
-                mod for mod in datablock.modifiers if mod.type == 'PARTICLE_SYSTEM']
-
-            for mod in particles_modifiers:
-                default =  mod.particle_system.settings
-                dumped_particles = data['modifiers'][mod.name]['particle_system']
-                loader.load(mod.particle_system, dumped_particles)
-
-                settings = get_datablock_from_uuid(dumped_particles['settings_uuid'], None)
-                if settings:
-                    mod.particle_system.settings = settings
-                    # Hack to remove the default generated particle settings
-                    if not default.uuid:
-                        bpy.data.particles.remove(default)
-
-            phys_modifiers = [
-                mod for mod in datablock.modifiers if mod.type in ['SOFT_BODY', 'CLOTH']]
-            
-            for mod in phys_modifiers:
-                loader.load(mod.settings, data['modifiers'][mod.name]['settings'])
+        constraints = data.get('constraints')
+        if constraints:
+            load_constraints(constraints, datablock.constraints)
 
         # PHYSICS
         load_physics(data, datablock)
@@ -470,10 +628,8 @@ class BlObject(ReplicatedDatablock):
 
     @staticmethod
     def dump(datablock: object) -> dict:
-        assert(datablock)
-
         if _is_editmode(datablock):
-            if self.preferences.sync_flags.sync_during_editmode:
+            if get_preferences().sync_flags.sync_during_editmode:
                 datablock.update_from_editmode()
             else:
                 raise ContextError("Object is in edit-mode.")
@@ -481,7 +637,6 @@ class BlObject(ReplicatedDatablock):
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
-            "uuid",
             "name",
             "rotation_mode",
             "data",
@@ -511,11 +666,15 @@ class BlObject(ReplicatedDatablock):
             'show_all_edges',
             'show_texture_space',
             'show_in_front',
-            'type'
+            'type',
+            'parent_type',
+            'parent_bone',
+            'track_axis',
+            'up_axis',
         ]
 
         data = dumper.dump(datablock)
-
+        data['animation_data'] = dump_animation_data(datablock)
         dumper.include_filter = [
             'matrix_parent_inverse',
             'matrix_local',
@@ -533,34 +692,9 @@ class BlObject(ReplicatedDatablock):
             data['parent_uid'] = (datablock.parent.uuid, datablock.parent.name)
 
         # MODIFIERS
+        modifiers = getattr(datablock, 'modifiers', None)
         if hasattr(datablock, 'modifiers'):
-            data["modifiers"] = {}
-            modifiers = getattr(datablock, 'modifiers', None)
-            if modifiers:
-                dumper.include_filter = None
-                dumper.depth = 1
-                dumper.exclude_filter = ['is_active']
-                for index, modifier in enumerate(modifiers):
-                    dumped_modifier = dumper.dump(modifier)
-                    # hack to dump geometry nodes inputs
-                    if modifier.type == 'NODES':
-                        dumped_inputs = dump_modifier_geometry_node_inputs(
-                            modifier)
-                        dumped_modifier['inputs'] = dumped_inputs
-
-                    elif modifier.type == 'PARTICLE_SYSTEM':
-                        dumper.exclude_filter = [
-                            "is_edited",
-                            "is_editable",
-                            "is_global_hair"
-                        ]
-                        dumped_modifier['particle_system'] = dumper.dump(modifier.particle_system)
-                        dumped_modifier['particle_system']['settings_uuid'] = modifier.particle_system.settings.uuid
-
-                    elif modifier.type in ['SOFT_BODY', 'CLOTH']:
-                        dumped_modifier['settings'] = dumper.dump(modifier.settings)
-
-                    data["modifiers"][modifier.name] = dumped_modifier
+            data['modifiers'] = dump_modifiers(modifiers)
 
         gp_modifiers = getattr(datablock, 'grease_pencil_modifiers', None)
 
@@ -586,9 +720,7 @@ class BlObject(ReplicatedDatablock):
 
         # CONSTRAINTS
         if hasattr(datablock, 'constraints'):
-            dumper.include_filter = None
-            dumper.depth = 3
-            data["constraints"] = dumper.dump(datablock.constraints)
+            data["constraints"] = dump_constraints(datablock.constraints)
 
         # POSE
         if hasattr(datablock, 'pose') and datablock.pose:
@@ -635,30 +767,7 @@ class BlObject(ReplicatedDatablock):
         #  SHAPE KEYS
         object_data = datablock.data
         if hasattr(object_data, 'shape_keys') and object_data.shape_keys:
-            dumper = Dumper()
-            dumper.depth = 2
-            dumper.include_filter = [
-                'reference_key',
-                'use_relative'
-            ]
-            data['shape_keys'] = dumper.dump(object_data.shape_keys)
-            data['shape_keys']['reference_key'] = object_data.shape_keys.reference_key.name
-            key_blocks = {}
-            for key in object_data.shape_keys.key_blocks:
-                dumper.depth = 3
-                dumper.include_filter = [
-                    'name',
-                    'data',
-                    'mute',
-                    'value',
-                    'slider_min',
-                    'slider_max',
-                    'data',
-                    'co'
-                ]
-                key_blocks[key.name] = dumper.dump(key)
-                key_blocks[key.name]['relative_key'] = key.relative_key.name
-            data['shape_keys']['key_blocks'] = key_blocks
+            data['shape_keys'] = dump_shape_keys(object_data.shape_keys)
 
         #  SKIN VERTICES
         if hasattr(object_data, 'skin_vertices') and object_data.skin_vertices:
@@ -678,16 +787,15 @@ class BlObject(ReplicatedDatablock):
                 'scatter',
                 'shadow',
             ]
-            data['cycles_visibility'] = dumper.dump(
-                datablock.cycles_visibility)
+            data['cycles_visibility'] = dumper.dump(datablock.cycles_visibility)
 
         # PHYSICS
-        data.update(dump_physics(instance))
+        data.update(dump_physics(datablock))
 
         return data
 
     @staticmethod
-    def resolve_deps(datablock: bpy.types.Object) -> list:
+    def resolve_deps(datablock: object) -> [object]:
         deps = []
 
         # Avoid Empty case
@@ -705,13 +813,22 @@ class BlObject(ReplicatedDatablock):
             # TODO: uuid based
             deps.append(datablock.instance_collection)
 
-        deps.extend(resolve_animation_dependencies(datablock))
-
         if datablock.modifiers:
             deps.extend(find_textures_dependencies(datablock.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))
+
         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

@@ -0,0 +1,106 @@
+import bpy
+import mathutils
+
+from . import dump_anything
+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:
+    """ Dump every texture slot collection as the form:
+        [(index, slot_texture_uuid, slot_texture_name), (), ...]
+    """
+    dumped_slots = []
+    for index, slot in enumerate(texture_slots):
+        if slot and slot.texture:
+            dumped_slots.append((index, slot.texture.uuid, slot.texture.name))
+
+    return dumped_slots
+
+
+def load_texture_slots(dumped_slots: list, target_slots: bpy.types.bpy_prop_collection):
+    """
+    """
+    for index, slot in enumerate(target_slots):
+        if slot:
+            target_slots.clear(index)
+
+    for index, slot_uuid, slot_name in dumped_slots:
+        target_slots.create(index).texture = get_datablock_from_uuid(
+            slot_uuid, slot_name
+        )
+
+IGNORED_ATTR = [
+    "is_embedded_data",
+    "is_evaluated",
+    "is_fluid",
+    "is_library_indirect",
+    "users"
+]
+
+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
+
+    @staticmethod
+    def construct(data: dict) -> object:
+        return bpy.data.particles.new(data["name"])
+
+    @staticmethod
+    def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
+        dump_anything.load(datablock, data)
+
+        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(datablock.force_field_1, force_field_1)
+
+        force_field_2 = data.get("force_field_2", None)
+        if force_field_2:
+            dump_anything.load(datablock.force_field_2, force_field_2)
+
+        # Texture slots
+        load_texture_slots(data["texture_slots"], datablock.texture_slots)
+
+    @staticmethod
+    def dump(datablock: object) -> dict:
+        dumper = dump_anything.Dumper()
+        dumper.depth = 1
+        dumper.exclude_filter = IGNORED_ATTR
+        data = dumper.dump(datablock)
+
+        # Particle effectors
+        data["effector_weights"] = dumper.dump(datablock.effector_weights)
+        if datablock.force_field_1:
+            data["force_field_1"] = dumper.dump(datablock.force_field_1)
+        if datablock.force_field_2:
+            data["force_field_2"] = dumper.dump(datablock.force_field_2)
+
+        # Texture slots
+        data["texture_slots"] = dump_textures_slots(datablock.texture_slots)
+        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.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

@@ -18,26 +18,23 @@
 
 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 replication.objects import Node
 
-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_action import (load_animation_data,
-                        dump_animation_data,
-                        resolve_animation_dependencies)
-from .bl_datablock import stamp_uuid
-
+from .bl_datablock import resolve_datablock_from_uuid
 from .bl_file import get_filepath
 from .dump_anything import Dumper, Loader
-from ..preferences import get_preferences
 
 RENDER_SETTINGS = [
     'dither_intensity',
@@ -307,7 +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
@@ -367,7 +365,7 @@ def load_sequence(sequence_data: dict, sequence_editor: bpy.types.SequenceEditor
                                                             **seq)
 
     loader = Loader()
-    # TODO: Support filepath updates
+
     loader.exclure_filter = ['filepath', 'sound', 'filenames', 'fps']
     loader.load(sequence, sequence_data)
     sequence.select = False
@@ -375,6 +373,7 @@ def load_sequence(sequence_data: dict, sequence_editor: bpy.types.SequenceEditor
 
 class BlScene(ReplicatedDatablock):
     is_root = True
+    use_delta = True
 
     bl_id = "scenes"
     bl_class = bpy.types.Scene
@@ -384,13 +383,12 @@ class BlScene(ReplicatedDatablock):
 
     @staticmethod
     def construct(data: dict) -> object:
-        datablock = bpy.data.scenes.new(data["name"])
-        datablock.uuid = data.get("uuid")
-
-        return datablock
+        return bpy.data.scenes.new(data["name"])
 
     @staticmethod
     def load(data: dict, datablock: object):
+        load_animation_data(data.get('animation_data'), datablock)
+
         # Load other meshes metadata
         loader = Loader()
         loader.load(datablock, data)
@@ -418,15 +416,14 @@ class BlScene(ReplicatedDatablock):
             if 'render' in data.keys():
                 loader.load(datablock.render, data['render'])
 
-            if 'view_settings' in data.keys():
-                loader.load(datablock.view_settings, data['view_settings'])
+            view_settings = data.get('view_settings')
+            if view_settings:
+                loader.load(datablock.view_settings, view_settings)
                 if datablock.view_settings.use_curve_mapping and \
-                        'curve_mapping' in data['view_settings']:
+                        'curve_mapping' in view_settings:
                     # TODO: change this ugly fix
-                    datablock.view_settings.curve_mapping.white_level = data[
-                        'view_settings']['curve_mapping']['white_level']
-                    datablock.view_settings.curve_mapping.black_level = data[
-                        'view_settings']['curve_mapping']['black_level']
+                    datablock.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']
                     datablock.view_settings.curve_mapping.update()
 
         # Sequencer
@@ -442,7 +439,7 @@ class BlScene(ReplicatedDatablock):
                 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 datablock.sequence_editor and not sequences:
@@ -454,7 +451,8 @@ class BlScene(ReplicatedDatablock):
 
     @staticmethod
     def dump(datablock: object) -> dict:
-        stamp_uuid(datablock)
+        data = {}
+        data['animation_data'] = dump_animation_data(datablock)
 
         # Metadata
         scene_dumper = Dumper()
@@ -467,13 +465,11 @@ class BlScene(ReplicatedDatablock):
             'frame_start',
             'frame_end',
             'frame_step',
-            'uuid'
         ]
         if get_preferences().sync_flags.sync_active_camera:
             scene_dumper.include_filter.append('camera')
 
-        data = scene_dumper.dump(datablock)
-        dump_animation_data(datablock, data)
+        data.update(scene_dumper.dump(datablock))
 
         # Master collection
         data['collection'] = {}
@@ -538,6 +534,8 @@ class BlScene(ReplicatedDatablock):
         if datablock.grease_pencil:
             deps.append(datablock.grease_pencil)
 
+        deps.extend(resolve_animation_dependencies(datablock))
+
         # Sequences
         vse = datablock.sequence_editor
         if vse:
@@ -550,11 +548,22 @@ class BlScene(ReplicatedDatablock):
                     for elem in sequence.elements:
                         sequence.append(
                             Path(bpy.path.abspath(sequence.directory),
-                                 elem.filename))
+                            elem.filename))
 
         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 get_preferences().sync_flags.sync_render_settings:
@@ -566,7 +575,22 @@ class BlScene(ReplicatedDatablock):
         if not get_preferences().sync_flags.sync_active_camera:
             exclude_path.append("root['camera']")
 
-        return DeepDiff(self.data, self._dump(datablock=self.datablock), 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

@@ -23,38 +23,39 @@ 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
 
+    @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):
-        return False
-
-    def dump(self, instance=None):
-        filename = Path(instance.filepath).name
+    @staticmethod
+    def dump(datablock: object) -> dict:
+        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
         }
 
     @staticmethod
@@ -66,3 +67,15 @@ class BlSound(BlDatablock):
             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
 
+    @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)
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.speakers.new(data["name"])
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
-
         dumper = Dumper()
         dumper.depth = 1
         dumper.include_filter = [
@@ -58,10 +63,18 @@ class BlSpeaker(BlDatablock):
             'cone_volume_outer'
         ]
 
-        return 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.speakers)
 
     @staticmethod
     def resolve_deps(datablock: object) -> [object]:
+        # TODO: resolve material
         deps = []
 
         sound = datablock.sound
@@ -69,6 +82,8 @@ class BlSpeaker(BlDatablock):
         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
 
+    @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)
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.textures.new(data["name"], data["type"])
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
 
         dumper = Dumper()
         dumper.depth = 1
@@ -52,15 +59,22 @@ class BlTexture(BlDatablock):
             'name_full'
         ]
 
-        data = dumper.dump(instance)
-        color_ramp = getattr(instance, 'color_ramp', None)
+        data = dumper.dump(datablock)
+
+        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
 
+    @staticmethod
+    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 = []
@@ -70,6 +84,14 @@ class BlTexture(BlDatablock):
         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(data: dict, datablock: object):
-        loader = Loader()
-        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)
-
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.volumes.new(data["name"])
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
-
         dumper = Dumper()
         dumper.depth = 1
         dumper.exclude_filter = [
@@ -60,17 +54,35 @@ 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
 
+    @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(datablock.filepath))
@@ -81,6 +93,9 @@ class BlVolume(BlDatablock):
             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
 
+    @staticmethod
     def construct(data: dict) -> object:
         return bpy.data.worlds.new(data["name"])
 
+    @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:
-                target.use_nodes = True
+            if datablock.node_tree is None:
+                datablock.use_nodes = True
 
-            load_node_tree(data['node_tree'], target.node_tree)
+            load_node_tree(data['node_tree'], datablock.node_tree)
 
+    @staticmethod
     def dump(datablock: object) -> dict:
-        assert(instance)
-
         world_dumper = Dumper()
         world_dumper.depth = 1
         world_dumper.include_filter = [
@@ -56,12 +63,18 @@ class BlWorld(BlDatablock):
             "name",
             "color"
         ]
-        data = world_dumper.dump(instance)
-        if instance.use_nodes:
-            data['node_tree'] = dump_node_tree(instance.node_tree)
+        data = world_dumper.dump(datablock)
+        if datablock.use_nodes:
+            data['node_tree'] = dump_node_tree(datablock.node_tree)
 
+        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.worlds)
+
     @staticmethod
     def resolve_deps(datablock: object) -> [object]:
         deps = []
@@ -69,4 +82,8 @@ class BlWorld(BlDatablock):
         if datablock.use_nodes:
             deps.extend(get_node_tree_dependencies(datablock.node_tree))
 
+        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 +1,150 @@
+# ##### 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 
+    """
+    nodes_ids = [n.uuid for n in session.repository.graph.values() if n.data['type_id'] in ['WindowsPath', 'PosixPath']]
+    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):
+                scn_uuid = porcelain.add(session.repository, update.id)
+                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/io_bpy/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(data: dict) -> object:
-        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/io_bpy/bl_particle.py

@@ -1,90 +0,0 @@
-import bpy
-import mathutils
-
-from . import dump_anything
-from .bl_datablock import BlDatablock, get_datablock_from_uuid
-
-
-def dump_textures_slots(texture_slots: bpy.types.bpy_prop_collection) -> list:
-    """ Dump every texture slot collection as the form:
-        [(index, slot_texture_uuid, slot_texture_name), (), ...]
-    """
-    dumped_slots = []
-    for index, slot in enumerate(texture_slots):
-        if slot and slot.texture:
-            dumped_slots.append((index, slot.texture.uuid, slot.texture.name))
-
-    return dumped_slots
-
-
-def load_texture_slots(dumped_slots: list, target_slots: bpy.types.bpy_prop_collection):
-    """
-    """
-    for index, slot in enumerate(target_slots):
-        if slot:
-            target_slots.clear(index)
-
-    for index, slot_uuid, slot_name in dumped_slots:
-        target_slots.create(index).texture = get_datablock_from_uuid(
-            slot_uuid, slot_name
-        )
-
-IGNORED_ATTR = [
-    "is_embedded_data",
-    "is_evaluated",
-    "is_fluid",
-    "is_library_indirect",
-    "users"
-]
-
-class BlParticle(BlDatablock):
-    bl_id = "particles"
-    bl_class = bpy.types.ParticleSettings
-    bl_icon = "PARTICLES"
-    bl_check_common = False
-    bl_reload_parent = False
-
-    def _construct(self, data):
-        instance = bpy.data.particles.new(data["name"])
-        instance.uuid = self.uuid
-        return instance
-
-    def _load_implementation(self, data, target):
-        dump_anything.load(target, data)
-
-        dump_anything.load(target.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)
-
-        force_field_2 = data.get("force_field_2", None)
-        if force_field_2:
-            dump_anything.load(target.force_field_2, force_field_2)
-
-        # Texture slots
-        load_texture_slots(data["texture_slots"], target.texture_slots)
-
-    def _dump_implementation(self, data, instance=None):
-        assert instance
-
-        dumper = dump_anything.Dumper()
-        dumper.depth = 1
-        dumper.exclude_filter = IGNORED_ATTR
-        data = dumper.dump(instance)
-
-        # Particle effectors
-        data["effector_weights"] = dumper.dump(instance.effector_weights)
-        if instance.force_field_1:
-            data["force_field_1"] = dumper.dump(instance.force_field_1)
-        if instance.force_field_2:
-            data["force_field_2"] = dumper.dump(instance.force_field_2)
-
-        # Texture slots
-        data["texture_slots"] = dump_textures_slots(instance.texture_slots)
-
-        return data
-
-    def _resolve_deps_implementation(self):
-        return [t.texture for t in self.instance.texture_slots if t and t.texture]

multi_user/operators.py

@@ -27,12 +27,14 @@ 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
 
 try:
     import _pickle as pickle
@@ -43,15 +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.protocol import DataTranslationProtocol
 from replication.exception import ContextError, NonAuthorizedOperationError
 from replication.interface import session
-from replication import porcelain
+from replication.objects import Node
+from replication.protocol import DataTranslationProtocol
 from replication.repository import Repository
 
-from . import io_bpy, 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
 
@@ -59,7 +63,6 @@ background_execution_queue = Queue()
 deleyables = []
 stop_modal_executor = False
 
-
 def session_callback(name):
     """ Session callback wrapper
 
@@ -78,41 +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
-    logging.info("Constructing nodes")
-    for node in session.repository.list_ordered():
-        node_ref = session.repository.get_node(node)
-        if node_ref is None:
-            logging.error(f"Can't construct node {node}")
-        elif node_ref.state == FETCHED:
-            node_ref.resolve()
+    if not runtime_settings.is_host:
+        logging.info("Intializing the scene")
+        # Step 1: Constrect nodes
+        logging.info("Instantiating nodes")
+        for node in session.repository.index_sorted:
+            node_ref = session.repository.graph.get(node)
+            if node_ref is None:
+                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
-    logging.info("Loading nodes")
-    for node in session.repository.list_ordered():
-        node_ref = session.repository.get_node(node)
-
-        if node_ref is None:
-            logging.error(f"Can't load node {node}")
-        elif node_ref.state == FETCHED:
-            node_ref.apply()
+        # Step 2: Load nodes
+        logging.info("Applying nodes")
+        for node in session.repository.index_sorted:
+            porcelain.apply(session.repository, node)
 
     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')
@@ -132,8 +133,8 @@ def on_connection_end(reason="none"):
 
     stop_modal_executor = True
 
-    if depsgraph_evaluation in bpy.app.handlers.depsgraph_update_post:
-        bpy.app.handlers.depsgraph_update_post.remove(depsgraph_evaluation)
+    if on_scene_update in bpy.app.handlers.depsgraph_update_post:
+        bpy.app.handlers.depsgraph_update_post.remove(on_scene_update)
 
     # Step 3: remove file handled
     logger = logging.getLogger()
@@ -141,8 +142,7 @@ def on_connection_end(reason="none"):
         if isinstance(handler, logging.FileHandler):
             logger.removeHandler(handler)
     if reason != "user":
-        bpy.ops.session.notify(
-            'INVOKE_DEFAULT', message=f"Disconnected from session. Reason: {reason}. ")
+        bpy.ops.session.notify('INVOKE_DEFAULT', message=f"Disconnected from session. Reason: {reason}. ")
 
 
 # OPERATORS
@@ -163,7 +163,7 @@ class SessionStartOperator(bpy.types.Operator):
         settings = utils.get_preferences()
         runtime_settings = context.window_manager.session
         users = bpy.data.window_managers['WinMan'].online_users
-        admin_pass = runtime_settings.password
+        admin_pass = settings.password
 
         users.clear()
         deleyables.clear()
@@ -191,81 +191,102 @@ class SessionStartOperator(bpy.types.Operator):
 
                 handler.setFormatter(formatter)
 
-        bpy_protocol = io_bpy.get_data_translation_protocol()
+        bpy_protocol = bl_types.get_data_translation_protocol()
 
         # Check if supported_datablocks are up to date before starting the
         # the session
-        for impl in bpy_protocol.implementations.values():
-            if impl.__name__ not in settings.supported_datablocks:
-                logging.info(f"{impl.__name__} not found, \
+        for dcc_type_id in bpy_protocol.implementations.keys():
+            if dcc_type_id not in settings.supported_datablocks:
+                logging.info(f"{dcc_type_id} not found, \
                              regenerate type settings...")
                 settings.generate_supported_types()
 
-        # Ensure blender 2.8 compatibility
+
         if bpy.app.version[1] >= 91:
             python_binary_path = sys.executable
         else:
             python_binary_path = bpy.app.binary_path_python
 
-        # HOST
+        repo = Repository(
+            rdp=bpy_protocol,
+            username=settings.username)
+    
+        # Host a session
         if self.host:
             if settings.init_method == 'EMPTY':
                 utils.clean_scene()
 
-            # Start the server locally
-            server = porcelain.serve(port=settings.port,
-                                    timeout=settings.connection_timeout,
-                                    admin_password=admin_pass,
-                                    log_directory=settings.cache_directory)
+            runtime_settings.is_host = True
+            runtime_settings.internet_ip = environment.get_ip()
 
-            # Init repository
-            repo = porcelain.init(bare=False,
-                                 data_protocol=bpy_protocol)
+            try:
+                # Init repository
+                for scene in bpy.data.scenes:
+                    porcelain.add(repo, scene)
 
-            # Add the existing scenes
-            for scene in bpy.data.scenes:
-                porcelain.add(repo, scene)
-
-            porcelain.remote_add(repo, 
-                                'server',
-                                '127.0.0.1',
-                                settings.port)
-            porcelain.sync(repo, 'server')
-            porcelain.push(repo, 'server')
-        # JOIN
+                porcelain.remote_add(
+                    repo,
+                    'origin',
+                    '127.0.0.1',
+                    settings.port,
+                    admin_password=admin_pass)
+                session.host(
+                    repository= repo,
+                    remote='origin',
+                    timeout=settings.connection_timeout,
+                    password=admin_pass,
+                    cache_directory=settings.cache_directory,
+                    server_log_level=logging.getLevelName(
+                        logging.getLogger().level),
+                )
+            except Exception as e:
+                self.report({'ERROR'}, repr(e))
+                logging.error(f"Error: {e}")
+                traceback.print_exc()
+        # Join a session
         else:
-            utils.clean_scene()
+            if not runtime_settings.admin:
+                utils.clean_scene()
+                # regular session, no password needed
+                admin_pass = None
 
-            repo = porcelain.clone(settings.ip, settings.ip)
+            try:
+                porcelain.remote_add(
+                    repo,
+                    'origin',
+                    settings.ip,
+                    settings.port,
+                    admin_password=admin_pass)
+                session.connect(
+                    repository= repo,
+                    timeout=settings.connection_timeout,
+                    password=admin_pass
+                )
+            except Exception as e:
+                self.report({'ERROR'}, str(e))
+                logging.error(str(e))
 
         # Background client updates service
-        # 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(
-        #     execution_queue=background_execution_queue)
-        # session_listen = timers.SessionListenTimer(timeout=0.001)
+        deleyables.append(timers.ClientUpdate())
+        deleyables.append(timers.DynamicRightSelectTimer())
+        deleyables.append(timers.ApplyTimer(timeout=settings.depsgraph_update_rate))
 
-        # session_listen.register()
-        # session_update.register()
-        # session_user_sync.register()
-        # session_background_executor.register()
+        session_update = timers.SessionStatusUpdate()
+        session_user_sync = timers.SessionUserSync()
+        session_background_executor = timers.MainThreadExecutor(
+            execution_queue=background_execution_queue)
+        session_listen = timers.SessionListenTimer(timeout=0.001)
 
-        # deleyables.append(session_background_executor)
-        # deleyables.append(session_update)
-        # deleyables.append(session_user_sync)
-        # deleyables.append(session_listen)
+        session_listen.register()
+        session_update.register()
+        session_user_sync.register()
+        session_background_executor.register()
+
+        deleyables.append(session_background_executor)
+        deleyables.append(session_update)
+        deleyables.append(session_user_sync)
+        deleyables.append(session_listen)
 
-        self.report(
-            {'INFO'},
-            f"connecting to tcp://{settings.ip}:{settings.port}")
         return {"FINISHED"}
 
 
@@ -304,6 +325,7 @@ class SessionInitOperator(bpy.types.Operator):
             porcelain.add(session.repository, scene)
 
         session.init()
+        context.window_manager.session.is_host = True
 
         return {"FINISHED"}
 
@@ -350,7 +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))
 
@@ -379,7 +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:
@@ -421,10 +443,17 @@ class SessionPropertyRightOperator(bpy.types.Operator):
         runtime_settings = context.window_manager.session
 
         if session:
-            session.change_owner(self.key,
-                                 runtime_settings.clients,
+            if runtime_settings.clients == RP_COMMON:
+                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"}
 
@@ -539,7 +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'}
 
@@ -572,13 +601,14 @@ 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)
             porcelain.apply(session.repository,
                             self.target,
                             force=True,
                             force_dependencies=self.reset_dependencies)
-            if node_ref.bl_reload_parent:
-                for parent in session.repository.get_parents(self.target):
+            impl = session.repository.rdp.get_implementation(node_ref.instance)
+            if impl.bl_reload_parent:
+                for parent in session.repository.graph.get_parents(self.target):
                     logging.debug(f"Refresh parent {parent}")
 
                     porcelain.apply(session.repository,
@@ -606,55 +636,12 @@ class SessionCommit(bpy.types.Operator):
 
     def execute(self, context):
         try:
-            porcelain.commit(session.repository, uuid=self.target)
-            session.push(self.target)
+            porcelain.commit(session.repository, self.target)
+            porcelain.push(session.repository, 'origin', self.target)
             return {"FINISHED"}
         except Exception as e:
             self.report({'ERROR'}, repr(e))
-            return {"CANCELED"}
-
-
-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=io_bpy.bl_armature.BlArmature)
-
-                for node in nodes:
-                    node_ref = session.repository.get_node(node)
-
-                    if node_ref.state == FETCHED:
-                        try:
-                            porcelain.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
+            return {"CANCELLED"}
 
 
 class SessionClearCache(bpy.types.Operator):
@@ -698,6 +685,7 @@ 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))
 
@@ -767,7 +755,7 @@ class SessionSaveBackupOperator(bpy.types.Operator, ExportHelper):
             recorder.register()
             deleyables.append(recorder)
         else:
-            session.save(self.filepath)
+            session.repository.dumps(self.filepath)
 
         return {'FINISHED'}
 
@@ -810,58 +798,25 @@ class SessionLoadSaveOperator(bpy.types.Operator, ImportHelper):
     def execute(self, context):
         from replication.repository import Repository
 
-        try:
-            f = gzip.open(self.filepath, "rb")
-            db = pickle.load(f)
-        except OSError as e:
-            f = open(self.filepath, "rb")
-            db = pickle.load(f)
+        # 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()
 
-        if db:
-            logging.info(f"Reading {self.filepath}")
-            nodes = db.get("nodes")
+        nodes = [repo.graph.get(n) for n in repo.index_sorted]
 
-            logging.info(f"{len(nodes)} Nodes to load")
+        # Step 1: Construct nodes
+        for node in 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
 
-            # init the factory with supported types
-            bpy_protocol = DataTranslationProtocol()
-            for type in io_bpy.types_to_register():
-                type_module = getattr(io_bpy, 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)
+        # Step 2: Load nodes
+        for node in nodes:
+            porcelain.apply(repo, node.uuid)
 
-                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'}
 
@@ -869,10 +824,78 @@ class SessionLoadSaveOperator(bpy.types.Operator, ImportHelper):
     def poll(cls, context):
         return True
 
+class SessionPresetServerAdd(bpy.types.Operator):
+    """Add a server to the server list preset"""
+    bl_idname = "session.preset_server_add"
+    bl_label = "add server preset"
+    bl_description = "add the current server to the server preset list"
+    bl_options = {"REGISTER"}
+
+    name : bpy.props.StringProperty(default="server_preset")
+    
+    @classmethod
+    def poll(cls, context):
+        return True
+
+    def invoke(self, context, event):
+        assert(context)
+        return context.window_manager.invoke_props_dialog(self)
+
+    def draw(self, context):
+        layout = self.layout
+
+        col = layout.column()
+        settings = utils.get_preferences()
+        
+        col.prop(settings, "server_name", text="server name")
+        
+    def execute(self, context):
+        assert(context)
+
+        settings = utils.get_preferences()
+
+        existing_preset = settings.server_preset.get(settings.server_name)
+
+        new_server = existing_preset if existing_preset else settings.server_preset.add()
+        new_server.name = settings.server_name
+        new_server.server_ip = settings.ip
+        new_server.server_port = settings.port
+        new_server.server_password = settings.password
+
+        settings.server_preset_interface = settings.server_name
+
+        if new_server == existing_preset :
+            self.report({'INFO'}, "Server '" + settings.server_name + "' override")
+        else :
+            self.report({'INFO'}, "New '" + settings.server_name + "' server preset")
+
+        return {'FINISHED'}
+
+
+class SessionPresetServerRemove(bpy.types.Operator):
+    """Remove a server to the server list preset"""
+    bl_idname = "session.preset_server_remove"
+    bl_label = "remove server preset"
+    bl_description = "remove the current server from the server preset list"
+    bl_options = {"REGISTER"}
+    
+    @classmethod
+    def poll(cls, context):
+        return True
+
+    def execute(self, context):
+        assert(context)
+
+        settings = utils.get_preferences()
+
+        settings.server_preset.remove(settings.server_preset.find(settings.server_preset_interface))
+
+        return {'FINISHED'}
+        
+
 
 def menu_func_import(self, context):
-    self.layout.operator(SessionLoadSaveOperator.bl_idname,
-                         text='Multi-user session snapshot (.db)')
+    self.layout.operator(SessionLoadSaveOperator.bl_idname, text='Multi-user session snapshot (.db)')
 
 
 classes = (
@@ -884,7 +907,6 @@ classes = (
     SessionPropertyRightOperator,
     SessionApply,
     SessionCommit,
-    ApplyArmatureOperator,
     SessionKickOperator,
     SessionInitOperator,
     SessionClearCache,
@@ -893,123 +915,17 @@ classes = (
     SessionLoadSaveOperator,
     SessionStopAutoSaveOperator,
     SessionPurgeOperator,
+    SessionPresetServerAdd,
+    SessionPresetServerRemove,
 )
 
 
-def update_external_dependencies():
-    nodes_ids = session.list(filter=io_bpy.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():
-            porcelain.commit(session.repository, 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():
-                                porcelain.commit(session.repository, node.uuid)
-                                session.push(node.uuid, check_data=False)
-                        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
-            # 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 = porcelain.add(session.repository, update.id)
-                    porcelain.commit(session.repository, scn_uuid)
-                    porcelain.push(session.repository)
-
-
 def register():
     from bpy.utils import register_class
 
     for cls in classes: 
         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:
@@ -1018,9 +934,3 @@ 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

@@ -24,7 +24,7 @@ import os
 
 from pathlib import Path
 
-from . import io_bpy, environment, addon_updater_ops, presence, ui
+from . import bl_types, environment, addon_updater_ops, presence, ui
 from .utils import get_preferences, get_expanded_icon
 from replication.constants import RP_COMMON
 from replication.interface import session
@@ -33,6 +33,19 @@ from replication.interface import session
 IP_REGEX = re.compile("^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$")
 HOSTNAME_REGEX = re.compile("^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$")
 
+DEFAULT_PRESETS = {
+    "localhost" : {
+        "server_ip": "localhost",
+        "server_port": 5555,
+        "server_password": "admin"
+    },
+    "public session" : {
+        "server_ip": "51.75.71.183",
+        "server_port": 5555,
+        "server_password": ""
+    },
+}
+
 def randomColor():
     """Generate a random color """
     r = random.random()
@@ -65,8 +78,11 @@ def update_ip(self, context):
         logging.error("Wrong IP format")
         self['ip'] = "127.0.0.1"
 
-
-
+def update_server_preset_interface(self, context):
+    self.server_name = self.server_preset.get(self.server_preset_interface).name
+    self.ip = self.server_preset.get(self.server_preset_interface).server_ip
+    self.port = self.server_preset.get(self.server_preset_interface).server_port
+    self.password = self.server_preset.get(self.server_preset_interface).server_password 
 
 def update_directory(self, context):
     new_dir = Path(self.cache_directory)
@@ -93,6 +109,10 @@ class ReplicatedDatablock(bpy.types.PropertyGroup):
     auto_push: bpy.props.BoolProperty(default=True)
     icon: bpy.props.StringProperty()
 
+class ServerPreset(bpy.types.PropertyGroup):
+    server_ip: bpy.props.StringProperty()
+    server_port: bpy.props.IntProperty(default=5555)
+    server_password: bpy.props.StringProperty(default="admin", subtype = "PASSWORD")
 
 def set_sync_render_settings(self, value):
     self['sync_render_settings'] = value
@@ -145,7 +165,7 @@ class SessionPrefs(bpy.types.AddonPreferences):
     ip: bpy.props.StringProperty(
         name="ip",
         description='Distant host ip',
-        default="127.0.0.1",
+        default="localhost",
         update=update_ip)
     username: bpy.props.StringProperty(
         name="Username",
@@ -160,6 +180,17 @@ class SessionPrefs(bpy.types.AddonPreferences):
         description='Distant host port',
         default=5555
     )
+    server_name: bpy.props.StringProperty(
+        name="server_name",
+        description="Custom name of the server",
+        default='localhost',
+    )
+    password: bpy.props.StringProperty(
+        name="password",
+        default=random_string_digits(),
+        description='Session password',
+        subtype='PASSWORD'
+    )
     sync_flags: bpy.props.PointerProperty(
         type=ReplicationFlags
     )
@@ -321,6 +352,25 @@ class SessionPrefs(bpy.types.AddonPreferences):
         max=59
     )
 
+    # Server preset
+    def server_list_callback(scene, context):
+        settings = get_preferences()
+        enum = []
+        for i in settings.server_preset:
+            enum.append((i.name, i.name, ""))
+        return enum
+
+    server_preset: bpy.props.CollectionProperty(
+        name="server preset",
+        type=ServerPreset,
+    )
+    server_preset_interface: bpy.props.EnumProperty(
+        name="servers",
+        description="servers enum",
+        items=server_list_callback,
+        update=update_server_preset_interface,
+    )
+
     # Custom panel
     panel_category: bpy.props.StringProperty(
         description="Choose a name for the category of the panel",
@@ -407,19 +457,32 @@ class SessionPrefs(bpy.types.AddonPreferences):
     def generate_supported_types(self):
         self.supported_datablocks.clear()
 
-        bpy_protocol = io_bpy.get_data_translation_protocol()
+        bpy_protocol = bl_types.get_data_translation_protocol()
 
         # init the factory with supported types
-        for impl in bpy_protocol.implementations.values():
+        for dcc_type_id, impl in bpy_protocol.implementations.items():
             new_db = self.supported_datablocks.add()
 
-            new_db.name = impl.__name__
-            new_db.type_name = impl.__name__
+            new_db.name = dcc_type_id
+            new_db.type_name = dcc_type_id
             new_db.use_as_filter = True
             new_db.icon = impl.bl_icon
             new_db.bl_name = impl.bl_id
 
 
+    # custom at launch server preset
+    def generate_default_presets(self): 
+        for preset_name, preset_data in DEFAULT_PRESETS.items():
+            existing_preset = self.server_preset.get(preset_name)
+            if existing_preset :
+                continue
+            new_server = self.server_preset.add()
+            new_server.name = preset_name
+            new_server.server_ip = preset_data.get('server_ip')
+            new_server.server_port = preset_data.get('server_port')
+            new_server.server_password = preset_data.get('server_password',None)
+
+
 def client_list_callback(scene, context):
     from . import operators
 
@@ -490,16 +553,20 @@ 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',
         default=False
     )
-    password: bpy.props.StringProperty(
-        name="password",
-        default=random_string_digits(),
-        description='Session password',
-        subtype='PASSWORD'
+    internet_ip: bpy.props.StringProperty(
+        name="internet ip",
+        default="no found",
+        description='Internet interface ip',
     )
     user_snap_running: bpy.props.BoolProperty(
         default=False
@@ -507,15 +574,17 @@ class SessionProps(bpy.types.PropertyGroup):
     time_snap_running: bpy.props.BoolProperty(
         default=False
     )
+    is_host: bpy.props.BoolProperty(
+        default=False
+    )
 
-def get_preferences():
-    return bpy.context.preferences.addons[__package__].preferences
 
 classes = (
     SessionUser,
     SessionProps,
     ReplicationFlags,
     ReplicatedDatablock,
+    ServerPreset,
     SessionPrefs,
 )
 
@@ -528,9 +597,13 @@ def register():
 
     prefs = bpy.context.preferences.addons[__package__].preferences
     if len(prefs.supported_datablocks) == 0:
-        logging.debug('Generating io_bpy preferences')
+        logging.debug('Generating bl_types preferences')
         prefs.generate_supported_types()
     
+    # at launch server presets
+    prefs.generate_default_presets()
+        
+
 
 def unregister():
     from bpy.utils import unregister_class

multi_user/presence.py

@@ -302,9 +302,10 @@ class UserSelectionWidget(Widget):
                 return
 
             vertex_pos = bbox_from_obj(ob, 1.0)
-            vertex_indices = ((0, 1), (0, 2), (1, 3), (2, 3),
-                              (4, 5), (4, 6), (5, 7), (6, 7),
-                              (0, 4), (1, 5), (2, 6), (3, 7))
+            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))
 
             if ob.instance_collection:
                 for obj in ob.instance_collection.objects:

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

@@ -31,6 +31,8 @@ from .presence import (UserFrustumWidget, UserNameWidget, UserSelectionWidget,
                        generate_user_camera, get_view_matrix, refresh_3d_view,
                        refresh_sidebar_view, renderer)
 
+from . import shared_data 
+
 this = sys.modules[__name__]
 
 # Registered timers
@@ -72,6 +74,7 @@ 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 +102,7 @@ class SessionBackupTimer(Timer):
 
 
     def execute(self):
-        session.save(self._filepath)
+        session.repository.dumps(self._filepath)
 
 class SessionListenTimer(Timer):
     def execute(self):
@@ -108,20 +111,20 @@ class SessionListenTimer(Timer):
 class ApplyTimer(Timer):
     def execute(self):
         if session and session.state == STATE_ACTIVE:
-            nodes = session.list()
-
-            for node in nodes:
-                node_ref = session.repository.get_node(node)
+            for node in session.repository.graph.keys():
+                node_ref = session.repository.graph.get(node)
 
                 if node_ref.state == FETCHED:
                     try:
+                        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:
-                            for parent in session.repository.get_parents(node):
+                        impl = session.repository.rdp.get_implementation(node_ref.instance)
+                        if impl.bl_reload_parent:
+                            for parent in session.repository.graph.get_parents(node):
                                 logging.debug("Refresh parent {node}")
                                 porcelain.apply(session.repository,
                                       parent.uuid,
@@ -152,31 +155,28 @@ class DynamicRightSelectTimer(Timer):
 
                 # if an annotation exist and is tracked
                 if annotation_gp and annotation_gp.uuid:
-                    registered_gp = session.repository.get_node(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")
-                            session.change_owner(
-                                registered_gp.uuid,
-                                settings.username,
-                                ignore_warnings=True,
-                                affect_dependencies=False)
+                            porcelain.lock(session.repository,
+                                            registered_gp.uuid,
+                                            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():
-                                porcelain.commit(session.repository, gp_node.uuid)
-                                session.push(gp_node.uuid, check_data=False)
+                            gp_node = session.repository.graph.get(annotation_gp.uuid)
+                            porcelain.commit(session.repository, gp_node.uuid)
+                            porcelain.push(session.repository, 'origin', gp_node.uuid)
 
                     elif self._annotating:
-                        session.change_owner(
-                            registered_gp.uuid,
-                            RP_COMMON,
-                            ignore_warnings=True,
-                            affect_dependencies=False)
+                        porcelain.unlock(session.repository,
+                                        registered_gp.uuid,
+                                        ignore_warnings=True,
+                                        affect_dependencies=False)
 
                 current_selection = utils.get_selected_objects(
                     bpy.context.scene,
@@ -190,25 +190,24 @@ class DynamicRightSelectTimer(Timer):
 
                     # change old selection right to common
                     for obj in obj_common:
-                        node = session.repository.get_node(obj)
+                        node = session.repository.graph.get(obj)
 
                         if node and (node.owner == settings.username or 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,
-                                    RP_COMMON,
-                                    ignore_warnings=True,
-                                    affect_dependencies=recursive)
+                                porcelain.unlock(session.repository,
+                                                node.uuid,
+                                                ignore_warnings=True,
+                                                affect_dependencies=recursive)
                             except NonAuthorizedOperationError:
                                 logging.warning(
                                     f"Not authorized to change {node} owner")
 
                     # change new selection to our
                     for obj in obj_ours:
-                        node = session.repository.get_node(obj)
+                        node = session.repository.graph.get(obj)
 
                         if node and node.owner == RP_COMMON:
                             recursive = True
@@ -216,11 +215,10 @@ class DynamicRightSelectTimer(Timer):
                                 recursive = node.data['instance_type'] != 'COLLECTION'
 
                             try:
-                                session.change_owner(
-                                    node.uuid,
-                                    settings.username,
-                                    ignore_warnings=True,
-                                    affect_dependencies=recursive)
+                                porcelain.lock(session.repository,
+                                               node.uuid,
+                                               ignore_warnings=True,
+                                               affect_dependencies=recursive)
                             except NonAuthorizedOperationError:
                                 logging.warning(
                                     f"Not authorized to change {node} owner")
@@ -233,21 +231,19 @@ 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(
-                            filter_owner=settings.username)
+                        owned_keys = [k for k, v in session.repository.graph.items() if v.owner==settings.username]
                         for key in owned_keys:
-                            node = session.repository.get_node(key)
+                            node = session.repository.graph.get(key)
                             try:
-                                session.change_owner(
-                                    key,
-                                    RP_COMMON,
-                                    ignore_warnings=True,
-                                    affect_dependencies=recursive)
+                                porcelain.unlock(session.repository,
+                                                key,
+                                                ignore_warnings=True,
+                                                affect_dependencies=True)
                             except NonAuthorizedOperationError:
                                 logging.warning(
                                     f"Not authorized to change {key} owner")
@@ -255,10 +251,10 @@ class DynamicRightSelectTimer(Timer):
             for obj in bpy.data.objects:
                 object_uuid = getattr(obj, 'uuid', None)
                 if object_uuid:
-                    node = session.repository.get_node(object_uuid)
-                    is_selectable = not node.owner in [settings.username, RP_COMMON]
+                    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):
@@ -272,7 +268,8 @@ class ClientUpdate(Timer):
 
         if session and renderer:
             if session.state in [STATE_ACTIVE, STATE_LOBBY]:
-                local_user = session.online_users.get(settings.username)
+                local_user = session.online_users.get(
+                    settings.username)
 
                 if not local_user:
                     return
@@ -309,18 +306,18 @@ class ClientUpdate(Timer):
                         'frame_current': bpy.context.scene.frame_current,
                         'scene_current': scene_current
                     }
-                    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)
 
 
 class SessionStatusUpdate(Timer):

multi_user/ui.py

@@ -111,6 +111,8 @@ class SESSION_PT_settings(bpy.types.Panel):
 
                 row= layout.row()
 
+                if current_state in [STATE_ACTIVE] and runtime_settings.is_host:
+                    info_msg = f"LAN: {runtime_settings.internet_ip}" 
                 if current_state == STATE_LOBBY:
                     info_msg = "Waiting for the session to start."
 
@@ -155,6 +157,12 @@ class SESSION_PT_settings_network(bpy.types.Panel):
         row.prop(runtime_settings, "session_mode", expand=True)
         row = layout.row()
                      
+        col = row.row(align=True)
+        col.prop(settings, "server_preset_interface", text="")
+        col.operator("session.preset_server_add", icon='ADD', text="")
+        col.operator("session.preset_server_remove", icon='REMOVE', text="")
+
+        row = layout.row()
         box = row.box()
 
         if runtime_settings.session_mode == 'HOST':
@@ -166,7 +174,7 @@ class SESSION_PT_settings_network(bpy.types.Panel):
             row.prop(settings, "init_method", text="")
             row = box.row()
             row.label(text="Admin password:")
-            row.prop(runtime_settings, "password", text="")
+            row.prop(settings, "password", text="")
             row = box.row()
             row.operator("session.start", text="HOST").host = True
         else:
@@ -182,11 +190,10 @@ class SESSION_PT_settings_network(bpy.types.Panel):
             if runtime_settings.admin:
                 row = box.row()
                 row.label(text="Password:")
-                row.prop(runtime_settings, "password", text="")
+                row.prop(settings, "password", text="")
             row = box.row()
             row.operator("session.start", text="CONNECT").host = False
 
-
 class SESSION_PT_settings_user(bpy.types.Panel):
     bl_idname = "MULTIUSER_SETTINGS_USER_PT_panel"
     bl_label = "User info"
@@ -436,8 +443,8 @@ class SESSION_PT_presence(bpy.types.Panel):
 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:
@@ -448,11 +455,10 @@ 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="",
-                          icon=settings.supported_datablocks[item.str_type].icon)
+    detail_item_box.label(text="", icon=icon)
     detail_item_box.label(text=f"{name}")
 
     # Operations
@@ -539,40 +545,32 @@ class SESSION_PT_repository(bpy.types.Panel):
             else:
                 row.operator('session.save', icon="FILE_TICK")
 
-            flow = layout.grid_flow(
-                row_major=True,
-                columns=0,
-                even_columns=True,
-                even_rows=False,
-                align=True)
-
-            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)
+            box = layout.box()
+            row = box.row()
+            row.prop(runtime_settings, "filter_owned", text="Show only owned Nodes", icon_only=True, icon="DECORATE_UNLOCKED")
+            row = box.row()
+            row.prop(runtime_settings, "filter_name", text="Filter")
+            row = box.row()
 
             # Properties
-            types_filter = [t.type_name for t in settings.supported_datablocks
-                            if t.use_as_filter]
+            owned_nodes = [k for k, v in  session.repository.graph.items() if v.owner==settings.username]
 
-            key_to_filter = session.list(
-                filter_owner=settings.username) if runtime_settings.filter_owned else session.list()
+            filtered_node = owned_nodes if runtime_settings.filter_owned else session.repository.graph.keys()
 
-            client_keys = [key for key in key_to_filter
-                           if session.repository.get_node(key).str_type
-                           in types_filter]
+            if runtime_settings.filter_name:
+                for node_id in filtered_node:
+                    node_instance = session.repository.graph.get(node_id)
+                    name = node_instance.data.get('name')
+                    if runtime_settings.filter_name not in name:
+                        filtered_node.remove(node_id)
 
-            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")

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):
-        try:
-            type_collection = getattr(bpy.data, type_name)
-            for item in type_collection:
+    for type_name in CLEARED_DATABLOCKS:
+        sub_collection_to_avoid = [
+            bpy.data.linestyles.get('LineStyle'),
+            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:
-            continue
+                logging.info(item.name)
+            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

@@ -5,9 +5,10 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_action import BlAction
+from multi_user.bl_types.bl_action import BlAction
 
 INTERPOLATION = ['CONSTANT', 'LINEAR', 'BEZIER', 'SINE', 'QUAD', 'CUBIC', 'QUART', 'QUINT', 'EXPO', 'CIRC', 'BACK', 'BOUNCE', 'ELASTIC']
+FMODIFIERS = ['GENERATOR', 'FNGENERATOR', 'ENVELOPE', 'CYCLES', 'NOISE', 'LIMITS', 'STEPPED']
 
 # @pytest.mark.parametrize('blendname', ['test_action.blend'])
 def test_action(clear_blend):
@@ -22,17 +23,20 @@ def test_action(clear_blend):
         point.co[1] = random.randint(-10,10)
         point.interpolation = INTERPOLATION[random.randint(0, len(INTERPOLATION)-1)]
 
+    for mod_type in FMODIFIERS:
+        fcurve_sample.modifiers.new(mod_type)
+
     bpy.ops.mesh.primitive_plane_add()
     bpy.data.objects[0].animation_data_create()
     bpy.data.objects[0].animation_data.action = datablock
 
     # Test
     implementation = BlAction()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.actions.remove(datablock)
 
-    test = implementation._construct(expected)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_armature.py

@@ -5,18 +5,18 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_armature import BlArmature
+from multi_user.bl_types.bl_armature import BlArmature
 
 def test_armature(clear_blend):
     bpy.ops.object.armature_add()
     datablock = bpy.data.armatures[0]
     
     implementation = BlArmature()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.armatures.remove(datablock)
 
-    test = implementation._construct(expected)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_camera.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_camera import BlCamera
+from multi_user.bl_types.bl_camera import BlCamera
 
 
 @pytest.mark.parametrize('camera_type', ['PANO','PERSP','ORTHO'])
@@ -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)
-    camera_dumper._load(expected, test)
-    result = camera_dumper._dump(test)
+    test = camera_dumper.construct(expected)
+    camera_dumper.load(expected, test)
+    result = camera_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_collection.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 from uuid import uuid4
 import bpy
 import random
-from multi_user.io_bpy.bl_collection import BlCollection
+from multi_user.bl_types.bl_collection import BlCollection
 
 def test_collection(clear_blend):
     # Generate a collection with childrens and a cube
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_curve.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_curve import BlCurve
+from multi_user.bl_types.bl_curve import BlCurve
 
 @pytest.mark.parametrize('curve_type', ['TEXT','BEZIER'])
 def test_curve(clear_blend, curve_type):
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_gpencil.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_gpencil import BlGpencil
+from multi_user.bl_types.bl_gpencil import BlGpencil
 
 
 def test_gpencil(clear_blend):
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lattice.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_lattice import BlLattice
+from multi_user.bl_types.bl_lattice import BlLattice
 
 
 def test_lattice(clear_blend):
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lightprobes.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_lightprobe import BlLightprobe
+from multi_user.bl_types.bl_lightprobe import BlLightprobe
 
 
 @pytest.mark.skipif(bpy.app.version[1] < 83, reason="requires blender 2.83 or higher")
@@ -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)
-    lightprobe_dumper._load(expected, test)
-    result = lightprobe_dumper._dump(test)
+    test = lightprobe_dumper.construct(expected)
+    lightprobe_dumper.load(expected, test)
+    result = lightprobe_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_lights.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_light import BlLight
+from multi_user.bl_types.bl_light import BlLight
 
 
 @pytest.mark.parametrize('light_type', ['SPOT','SUN','POINT','AREA'])
@@ -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)
-    light_dumper._load(expected, test)
-    result = light_dumper._dump(test)
+    test = light_dumper.construct(expected)
+    light_dumper.load(expected, test)
+    result = light_dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_material.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_material import BlMaterial
+from multi_user.bl_types.bl_material import BlMaterial
 
 
 def test_material_nodes(clear_blend):
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, 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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_mesh.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_mesh import BlMesh
+from multi_user.bl_types.bl_mesh import BlMesh
 
 @pytest.mark.parametrize('mesh_type', ['EMPTY','FILLED'])
 def test_mesh(clear_blend, mesh_type):
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_metaball.py

@@ -4,7 +4,7 @@ import pytest
 from deepdiff import DeepDiff
 
 import bpy
-from multi_user.io_bpy.bl_metaball import BlMetaball
+from multi_user.bl_types.bl_metaball import BlMetaball
 
 
 @pytest.mark.parametrize('metaballs_type', ['PLANE','CAPSULE','BALL','ELLIPSOID','CUBE'])
@@ -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)
-    dumper._load(expected, test)
-    result = dumper._dump(test)
+    test = dumper.construct(expected)
+    dumper.load(expected, test)
+    result = dumper.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_object.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_object import BlObject
+from multi_user.bl_types.bl_object import BlObject
 
 # Removed 'BUILD', 'SOFT_BODY' modifier because the seed doesn't seems to be
 # correctly initialized (#TODO: report the bug)
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
     print(DeepDiff(expected, result))
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_scene.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_scene import BlScene
+from multi_user.bl_types.bl_scene import BlScene
 from multi_user.utils import get_preferences
 
 def test_scene(clear_blend):
@@ -15,11 +15,11 @@ def test_scene(clear_blend):
     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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_speaker.py

@@ -5,18 +5,18 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_speaker import BlSpeaker
+from multi_user.bl_types.bl_speaker import BlSpeaker
 
 def test_speaker(clear_blend):
     bpy.ops.object.speaker_add()
     datablock = bpy.data.speakers[0]
     
     implementation = BlSpeaker()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.speakers.remove(datablock)
 
-    test = implementation._construct(expected)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_texture.py

@@ -5,7 +5,7 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_texture import BlTexture
+from multi_user.bl_types.bl_texture import BlTexture
 
 TEXTURE_TYPES = ['NONE', 'BLEND', 'CLOUDS', 'DISTORTED_NOISE', 'IMAGE', 'MAGIC', 'MARBLE', 'MUSGRAVE', 'NOISE', 'STUCCI', 'VORONOI', 'WOOD']
 
@@ -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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_volume.py

@@ -5,17 +5,17 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_volume import BlVolume
+from multi_user.bl_types.bl_volume import BlVolume
 
 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)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)

tests/test_bl_types/test_world.py

@@ -5,18 +5,18 @@ from deepdiff import DeepDiff
 
 import bpy
 import random
-from multi_user.io_bpy.bl_world import BlWorld
+from multi_user.bl_types.bl_world import BlWorld
 
 def test_world(clear_blend):
     datablock = bpy.data.worlds.new('test')
     datablock.use_nodes = True
     
     implementation = BlWorld()
-    expected = implementation._dump(datablock)
+    expected = implementation.dump(datablock)
     bpy.data.worlds.remove(datablock)
 
-    test = implementation._construct(expected)
-    implementation._load(expected, test)
-    result = implementation._dump(test)
+    test = implementation.construct(expected)
+    implementation.load(expected, test)
+    result = implementation.dump(test)
 
     assert not DeepDiff(expected, result)