godot-docs/classes/class_multiplayersynchronizer.rst

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	:keywords: network

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.. _class_MultiplayerSynchronizer:

MultiplayerSynchronizer
=======================

**Inherits:** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

Synchronizes properties from the multiplayer authority to the remote peers.

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Description
-----------

By default, **MultiplayerSynchronizer** synchronizes configured properties to all peers.

Visibility can be handled directly with :ref:`set_visibility_for()<class_MultiplayerSynchronizer_method_set_visibility_for>` or as-needed with :ref:`add_visibility_filter()<class_MultiplayerSynchronizer_method_add_visibility_filter>` and :ref:`update_visibility()<class_MultiplayerSynchronizer_method_update_visibility>`.

\ :ref:`MultiplayerSpawner<class_MultiplayerSpawner>`\ s will handle nodes according to visibility of synchronizers as long as the node at :ref:`root_path<class_MultiplayerSynchronizer_property_root_path>` was spawned by one.

Internally, **MultiplayerSynchronizer** uses :ref:`MultiplayerAPI.object_configuration_add()<class_MultiplayerAPI_method_object_configuration_add>` to notify synchronization start passing the :ref:`Node<class_Node>` at :ref:`root_path<class_MultiplayerSynchronizer_property_root_path>` as the ``object`` and itself as the ``configuration``, and uses :ref:`MultiplayerAPI.object_configuration_remove()<class_MultiplayerAPI_method_object_configuration_remove>` to notify synchronization end in a similar way.

\ **Note:** Synchronization is not supported for :ref:`Object<class_Object>` type properties, like :ref:`Resource<class_Resource>`. Properties that are unique to each peer, like the instance IDs of :ref:`Object<class_Object>`\ s (see :ref:`Object.get_instance_id()<class_Object_method_get_instance_id>`) or :ref:`RID<class_RID>`\ s, will also not work in synchronization.

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Properties
----------

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   :widths: auto

   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`float<class_float>`                                                      | :ref:`delta_interval<class_MultiplayerSynchronizer_property_delta_interval>`                 | ``0.0``            |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`bool<class_bool>`                                                        | :ref:`public_visibility<class_MultiplayerSynchronizer_property_public_visibility>`           | ``true``           |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`SceneReplicationConfig<class_SceneReplicationConfig>`                    | :ref:`replication_config<class_MultiplayerSynchronizer_property_replication_config>`         |                    |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`float<class_float>`                                                      | :ref:`replication_interval<class_MultiplayerSynchronizer_property_replication_interval>`     | ``0.0``            |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`NodePath<class_NodePath>`                                                | :ref:`root_path<class_MultiplayerSynchronizer_property_root_path>`                           | ``NodePath("..")`` |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+
   | :ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` | :ref:`visibility_update_mode<class_MultiplayerSynchronizer_property_visibility_update_mode>` | ``0``              |
   +--------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------+--------------------+

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Methods
-------

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   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                  | :ref:`add_visibility_filter<class_MultiplayerSynchronizer_method_add_visibility_filter>`\ (\ filter\: :ref:`Callable<class_Callable>`\ )                  |
   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>` | :ref:`get_visibility_for<class_MultiplayerSynchronizer_method_get_visibility_for>`\ (\ peer\: :ref:`int<class_int>`\ ) |const|                            |
   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                  | :ref:`remove_visibility_filter<class_MultiplayerSynchronizer_method_remove_visibility_filter>`\ (\ filter\: :ref:`Callable<class_Callable>`\ )            |
   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                  | :ref:`set_visibility_for<class_MultiplayerSynchronizer_method_set_visibility_for>`\ (\ peer\: :ref:`int<class_int>`, visible\: :ref:`bool<class_bool>`\ ) |
   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                  | :ref:`update_visibility<class_MultiplayerSynchronizer_method_update_visibility>`\ (\ for_peer\: :ref:`int<class_int>` = 0\ )                              |
   +-------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+

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Signals
-------

.. _class_MultiplayerSynchronizer_signal_delta_synchronized:

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**delta_synchronized**\ (\ ) :ref:`🔗<class_MultiplayerSynchronizer_signal_delta_synchronized>`

Emitted when a new delta synchronization state is received by this synchronizer after the properties have been updated.

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.. _class_MultiplayerSynchronizer_signal_synchronized:

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**synchronized**\ (\ ) :ref:`🔗<class_MultiplayerSynchronizer_signal_synchronized>`

Emitted when a new synchronization state is received by this synchronizer after the properties have been updated.

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.. _class_MultiplayerSynchronizer_signal_visibility_changed:

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**visibility_changed**\ (\ for_peer\: :ref:`int<class_int>`\ ) :ref:`🔗<class_MultiplayerSynchronizer_signal_visibility_changed>`

Emitted when visibility of ``for_peer`` is updated. See :ref:`update_visibility()<class_MultiplayerSynchronizer_method_update_visibility>`.

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Enumerations
------------

.. _enum_MultiplayerSynchronizer_VisibilityUpdateMode:

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enum **VisibilityUpdateMode**: :ref:`🔗<enum_MultiplayerSynchronizer_VisibilityUpdateMode>`

.. _class_MultiplayerSynchronizer_constant_VISIBILITY_PROCESS_IDLE:

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:ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` **VISIBILITY_PROCESS_IDLE** = ``0``

Visibility filters are updated during process frames (see :ref:`Node.NOTIFICATION_INTERNAL_PROCESS<class_Node_constant_NOTIFICATION_INTERNAL_PROCESS>`).

.. _class_MultiplayerSynchronizer_constant_VISIBILITY_PROCESS_PHYSICS:

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:ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` **VISIBILITY_PROCESS_PHYSICS** = ``1``

Visibility filters are updated during physics frames (see :ref:`Node.NOTIFICATION_INTERNAL_PHYSICS_PROCESS<class_Node_constant_NOTIFICATION_INTERNAL_PHYSICS_PROCESS>`).

.. _class_MultiplayerSynchronizer_constant_VISIBILITY_PROCESS_NONE:

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:ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` **VISIBILITY_PROCESS_NONE** = ``2``

Visibility filters are not updated automatically, and must be updated manually by calling :ref:`update_visibility()<class_MultiplayerSynchronizer_method_update_visibility>`.

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Property Descriptions
---------------------

.. _class_MultiplayerSynchronizer_property_delta_interval:

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:ref:`float<class_float>` **delta_interval** = ``0.0`` :ref:`🔗<class_MultiplayerSynchronizer_property_delta_interval>`

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- |void| **set_delta_interval**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_delta_interval**\ (\ )

Time interval between delta synchronizations. Used when the replication is set to :ref:`SceneReplicationConfig.REPLICATION_MODE_ON_CHANGE<class_SceneReplicationConfig_constant_REPLICATION_MODE_ON_CHANGE>`. If set to ``0.0`` (the default), delta synchronizations happen every network process frame.

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.. _class_MultiplayerSynchronizer_property_public_visibility:

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:ref:`bool<class_bool>` **public_visibility** = ``true`` :ref:`🔗<class_MultiplayerSynchronizer_property_public_visibility>`

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- |void| **set_visibility_public**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_visibility_public**\ (\ )

Whether synchronization should be visible to all peers by default. See :ref:`set_visibility_for()<class_MultiplayerSynchronizer_method_set_visibility_for>` and :ref:`add_visibility_filter()<class_MultiplayerSynchronizer_method_add_visibility_filter>` for ways of configuring fine-grained visibility options.

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.. _class_MultiplayerSynchronizer_property_replication_config:

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:ref:`SceneReplicationConfig<class_SceneReplicationConfig>` **replication_config** :ref:`🔗<class_MultiplayerSynchronizer_property_replication_config>`

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- |void| **set_replication_config**\ (\ value\: :ref:`SceneReplicationConfig<class_SceneReplicationConfig>`\ )
- :ref:`SceneReplicationConfig<class_SceneReplicationConfig>` **get_replication_config**\ (\ )

Resource containing which properties to synchronize.

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.. _class_MultiplayerSynchronizer_property_replication_interval:

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:ref:`float<class_float>` **replication_interval** = ``0.0`` :ref:`🔗<class_MultiplayerSynchronizer_property_replication_interval>`

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- |void| **set_replication_interval**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_replication_interval**\ (\ )

Time interval between synchronizations. Used when the replication is set to :ref:`SceneReplicationConfig.REPLICATION_MODE_ALWAYS<class_SceneReplicationConfig_constant_REPLICATION_MODE_ALWAYS>`. If set to ``0.0`` (the default), synchronizations happen every network process frame.

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.. _class_MultiplayerSynchronizer_property_root_path:

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:ref:`NodePath<class_NodePath>` **root_path** = ``NodePath("..")`` :ref:`🔗<class_MultiplayerSynchronizer_property_root_path>`

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- |void| **set_root_path**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
- :ref:`NodePath<class_NodePath>` **get_root_path**\ (\ )

Node path that replicated properties are relative to.

If :ref:`root_path<class_MultiplayerSynchronizer_property_root_path>` was spawned by a :ref:`MultiplayerSpawner<class_MultiplayerSpawner>`, the node will be also be spawned and despawned based on this synchronizer visibility options.

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.. _class_MultiplayerSynchronizer_property_visibility_update_mode:

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:ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` **visibility_update_mode** = ``0`` :ref:`🔗<class_MultiplayerSynchronizer_property_visibility_update_mode>`

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- |void| **set_visibility_update_mode**\ (\ value\: :ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>`\ )
- :ref:`VisibilityUpdateMode<enum_MultiplayerSynchronizer_VisibilityUpdateMode>` **get_visibility_update_mode**\ (\ )

Specifies when visibility filters are updated.

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Method Descriptions
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.. _class_MultiplayerSynchronizer_method_add_visibility_filter:

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|void| **add_visibility_filter**\ (\ filter\: :ref:`Callable<class_Callable>`\ ) :ref:`🔗<class_MultiplayerSynchronizer_method_add_visibility_filter>`

Adds a peer visibility filter for this synchronizer.

\ ``filter`` should take a peer ID :ref:`int<class_int>` and return a :ref:`bool<class_bool>`.

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.. _class_MultiplayerSynchronizer_method_get_visibility_for:

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:ref:`bool<class_bool>` **get_visibility_for**\ (\ peer\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_MultiplayerSynchronizer_method_get_visibility_for>`

Queries the current visibility for peer ``peer``.

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.. _class_MultiplayerSynchronizer_method_remove_visibility_filter:

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|void| **remove_visibility_filter**\ (\ filter\: :ref:`Callable<class_Callable>`\ ) :ref:`🔗<class_MultiplayerSynchronizer_method_remove_visibility_filter>`

Removes a peer visibility filter from this synchronizer.

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.. _class_MultiplayerSynchronizer_method_set_visibility_for:

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|void| **set_visibility_for**\ (\ peer\: :ref:`int<class_int>`, visible\: :ref:`bool<class_bool>`\ ) :ref:`🔗<class_MultiplayerSynchronizer_method_set_visibility_for>`

Sets the visibility of ``peer`` to ``visible``. If ``peer`` is ``0``, the value of :ref:`public_visibility<class_MultiplayerSynchronizer_property_public_visibility>` will be updated instead.

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.. _class_MultiplayerSynchronizer_method_update_visibility:

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|void| **update_visibility**\ (\ for_peer\: :ref:`int<class_int>` = 0\ ) :ref:`🔗<class_MultiplayerSynchronizer_method_update_visibility>`

Updates the visibility of ``for_peer`` according to visibility filters. If ``for_peer`` is ``0`` (the default), all peers' visibilties are updated.

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