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godot-docs/classes/class_joint2d.rst
2025-06-07 03:33:02 +00:00

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.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/Joint2D.xml.
.. _class_Joint2D:
Joint2D
=======
**Inherits:** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
**Inherited By:** :ref:`DampedSpringJoint2D<class_DampedSpringJoint2D>`, :ref:`GrooveJoint2D<class_GrooveJoint2D>`, :ref:`PinJoint2D<class_PinJoint2D>`
Abstract base class for all 2D physics joints.
.. rst-class:: classref-introduction-group
Description
-----------
Abstract base class for all joints in 2D physics. 2D joints bind together two physics bodies (:ref:`node_a<class_Joint2D_property_node_a>` and :ref:`node_b<class_Joint2D_property_node_b>`) and apply a constraint.
.. rst-class:: classref-reftable-group
Properties
----------
.. table::
:widths: auto
+---------------------------------+--------------------------------------------------------------------+------------------+
| :ref:`float<class_float>` | :ref:`bias<class_Joint2D_property_bias>` | ``0.0`` |
+---------------------------------+--------------------------------------------------------------------+------------------+
| :ref:`bool<class_bool>` | :ref:`disable_collision<class_Joint2D_property_disable_collision>` | ``true`` |
+---------------------------------+--------------------------------------------------------------------+------------------+
| :ref:`NodePath<class_NodePath>` | :ref:`node_a<class_Joint2D_property_node_a>` | ``NodePath("")`` |
+---------------------------------+--------------------------------------------------------------------+------------------+
| :ref:`NodePath<class_NodePath>` | :ref:`node_b<class_Joint2D_property_node_b>` | ``NodePath("")`` |
+---------------------------------+--------------------------------------------------------------------+------------------+
.. rst-class:: classref-reftable-group
Methods
-------
.. table::
:widths: auto
+-----------------------+------------------------------------------------------------+
| :ref:`RID<class_RID>` | :ref:`get_rid<class_Joint2D_method_get_rid>`\ (\ ) |const| |
+-----------------------+------------------------------------------------------------+
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
Property Descriptions
---------------------
.. _class_Joint2D_property_bias:
.. rst-class:: classref-property
:ref:`float<class_float>` **bias** = ``0.0`` :ref:`🔗<class_Joint2D_property_bias>`
.. rst-class:: classref-property-setget
- |void| **set_bias**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_bias**\ (\ )
When :ref:`node_a<class_Joint2D_property_node_a>` and :ref:`node_b<class_Joint2D_property_node_b>` move in different directions the :ref:`bias<class_Joint2D_property_bias>` controls how fast the joint pulls them back to their original position. The lower the :ref:`bias<class_Joint2D_property_bias>` the more the two bodies can pull on the joint.
When set to ``0``, the default value from :ref:`ProjectSettings.physics/2d/solver/default_constraint_bias<class_ProjectSettings_property_physics/2d/solver/default_constraint_bias>` is used.
.. rst-class:: classref-item-separator
----
.. _class_Joint2D_property_disable_collision:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **disable_collision** = ``true`` :ref:`🔗<class_Joint2D_property_disable_collision>`
.. rst-class:: classref-property-setget
- |void| **set_exclude_nodes_from_collision**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_exclude_nodes_from_collision**\ (\ )
If ``true``, the two bodies bound together do not collide with each other.
.. rst-class:: classref-item-separator
----
.. _class_Joint2D_property_node_a:
.. rst-class:: classref-property
:ref:`NodePath<class_NodePath>` **node_a** = ``NodePath("")`` :ref:`🔗<class_Joint2D_property_node_a>`
.. rst-class:: classref-property-setget
- |void| **set_node_a**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
- :ref:`NodePath<class_NodePath>` **get_node_a**\ (\ )
Path to the first body (A) attached to the joint. The node must inherit :ref:`PhysicsBody2D<class_PhysicsBody2D>`.
.. rst-class:: classref-item-separator
----
.. _class_Joint2D_property_node_b:
.. rst-class:: classref-property
:ref:`NodePath<class_NodePath>` **node_b** = ``NodePath("")`` :ref:`🔗<class_Joint2D_property_node_b>`
.. rst-class:: classref-property-setget
- |void| **set_node_b**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
- :ref:`NodePath<class_NodePath>` **get_node_b**\ (\ )
Path to the second body (B) attached to the joint. The node must inherit :ref:`PhysicsBody2D<class_PhysicsBody2D>`.
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
Method Descriptions
-------------------
.. _class_Joint2D_method_get_rid:
.. rst-class:: classref-method
:ref:`RID<class_RID>` **get_rid**\ (\ ) |const| :ref:`🔗<class_Joint2D_method_get_rid>`
Returns the joint's internal :ref:`RID<class_RID>` from the :ref:`PhysicsServer2D<class_PhysicsServer2D>`.
.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
.. |void| replace:: :abbr:`void (No return value.)`