godot-docs/classes/class_shapecast3d.rst

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.. _class_ShapeCast3D:

ShapeCast3D
===========

**Inherits:** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

A 3D shape that sweeps a region of space to detect :ref:`CollisionObject3D<class_CollisionObject3D>`\ s.

.. rst-class:: classref-introduction-group

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

Shape casting allows to detect collision objects by sweeping its :ref:`shape<class_ShapeCast3D_property_shape>` along the cast direction determined by :ref:`target_position<class_ShapeCast3D_property_target_position>`. This is similar to :ref:`RayCast3D<class_RayCast3D>`, but it allows for sweeping a region of space, rather than just a straight line. **ShapeCast3D** can detect multiple collision objects. It is useful for things like wide laser beams or snapping a simple shape to a floor.

Immediate collision overlaps can be done with the :ref:`target_position<class_ShapeCast3D_property_target_position>` set to ``Vector3(0, 0, 0)`` and by calling :ref:`force_shapecast_update<class_ShapeCast3D_method_force_shapecast_update>` within the same physics frame. This helps to overcome some limitations of :ref:`Area3D<class_Area3D>` when used as an instantaneous detection area, as collision information isn't immediately available to it.

\ **Note:** Shape casting is more computationally expensive than ray casting.

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Properties
----------

.. table::
   :widths: auto

   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`collide_with_areas<class_ShapeCast3D_property_collide_with_areas>`             | ``false``             |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`collide_with_bodies<class_ShapeCast3D_property_collide_with_bodies>`           | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`int<class_int>`         | :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>`                     | ``1``                 |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Array<class_Array>`     | :ref:`collision_result<class_ShapeCast3D_property_collision_result>`                 | ``[]``                |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Color<class_Color>`     | :ref:`debug_shape_custom_color<class_ShapeCast3D_property_debug_shape_custom_color>` | ``Color(0, 0, 0, 1)`` |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`enabled<class_ShapeCast3D_property_enabled>`                                   | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`exclude_parent<class_ShapeCast3D_property_exclude_parent>`                     | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`float<class_float>`     | :ref:`margin<class_ShapeCast3D_property_margin>`                                     | ``0.0``               |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`int<class_int>`         | :ref:`max_results<class_ShapeCast3D_property_max_results>`                           | ``32``                |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Shape3D<class_Shape3D>` | :ref:`shape<class_ShapeCast3D_property_shape>`                                       |                       |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`target_position<class_ShapeCast3D_property_target_position>`                   | ``Vector3(0, -1, 0)`` |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+

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Methods
-------

.. table::
   :widths: auto

   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`add_exception<class_ShapeCast3D_method_add_exception>` **(** :ref:`CollisionObject3D<class_CollisionObject3D>` node **)**                                  |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`add_exception_rid<class_ShapeCast3D_method_add_exception_rid>` **(** :ref:`RID<class_RID>` rid **)**                                                       |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`clear_exceptions<class_ShapeCast3D_method_clear_exceptions>` **(** **)**                                                                                   |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`force_shapecast_update<class_ShapeCast3D_method_force_shapecast_update>` **(** **)**                                                                       |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`     | :ref:`get_closest_collision_safe_fraction<class_ShapeCast3D_method_get_closest_collision_safe_fraction>` **(** **)** |const|                                     |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`     | :ref:`get_closest_collision_unsafe_fraction<class_ShapeCast3D_method_get_closest_collision_unsafe_fraction>` **(** **)** |const|                                 |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Object<class_Object>`   | :ref:`get_collider<class_ShapeCast3D_method_get_collider>` **(** :ref:`int<class_int>` index **)** |const|                                                       |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`         | :ref:`get_collider_rid<class_ShapeCast3D_method_get_collider_rid>` **(** :ref:`int<class_int>` index **)** |const|                                               |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`         | :ref:`get_collider_shape<class_ShapeCast3D_method_get_collider_shape>` **(** :ref:`int<class_int>` index **)** |const|                                           |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`         | :ref:`get_collision_count<class_ShapeCast3D_method_get_collision_count>` **(** **)** |const|                                                                     |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`get_collision_mask_value<class_ShapeCast3D_method_get_collision_mask_value>` **(** :ref:`int<class_int>` layer_number **)** |const|                        |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`get_collision_normal<class_ShapeCast3D_method_get_collision_normal>` **(** :ref:`int<class_int>` index **)** |const|                                       |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`get_collision_point<class_ShapeCast3D_method_get_collision_point>` **(** :ref:`int<class_int>` index **)** |const|                                         |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>` **(** **)** |const|                                                                                   |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`remove_exception<class_ShapeCast3D_method_remove_exception>` **(** :ref:`CollisionObject3D<class_CollisionObject3D>` node **)**                            |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`remove_exception_rid<class_ShapeCast3D_method_remove_exception_rid>` **(** :ref:`RID<class_RID>` rid **)**                                                 |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`resource_changed<class_ShapeCast3D_method_resource_changed>` **(** :ref:`Resource<class_Resource>` resource **)**                                          |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                          | :ref:`set_collision_mask_value<class_ShapeCast3D_method_set_collision_mask_value>` **(** :ref:`int<class_int>` layer_number, :ref:`bool<class_bool>` value **)** |
   +-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------+

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

.. _class_ShapeCast3D_property_collide_with_areas:

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:ref:`bool<class_bool>` **collide_with_areas** = ``false``

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- void **set_collide_with_areas** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_collide_with_areas_enabled** **(** **)**

If ``true``, collisions with :ref:`Area3D<class_Area3D>`\ s will be reported.

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----

.. _class_ShapeCast3D_property_collide_with_bodies:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **collide_with_bodies** = ``true``

.. rst-class:: classref-property-setget

- void **set_collide_with_bodies** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_collide_with_bodies_enabled** **(** **)**

If ``true``, collisions with :ref:`PhysicsBody3D<class_PhysicsBody3D>`\ s will be reported.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_property_collision_mask:

.. rst-class:: classref-property

:ref:`int<class_int>` **collision_mask** = ``1``

.. rst-class:: classref-property-setget

- void **set_collision_mask** **(** :ref:`int<class_int>` value **)**
- :ref:`int<class_int>` **get_collision_mask** **(** **)**

The shape's collision mask. Only objects in at least one collision layer enabled in the mask will be detected. See `Collision layers and masks <../tutorials/physics/physics_introduction.html#collision-layers-and-masks>`__ in the documentation for more information.

.. rst-class:: classref-item-separator

----

.. _class_ShapeCast3D_property_collision_result:

.. rst-class:: classref-property

:ref:`Array<class_Array>` **collision_result** = ``[]``

Returns the complete collision information from the collision sweep. The data returned is the same as in the :ref:`PhysicsDirectSpaceState3D.get_rest_info<class_PhysicsDirectSpaceState3D_method_get_rest_info>` method.

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----

.. _class_ShapeCast3D_property_debug_shape_custom_color:

.. rst-class:: classref-property

:ref:`Color<class_Color>` **debug_shape_custom_color** = ``Color(0, 0, 0, 1)``

.. rst-class:: classref-property-setget

- void **set_debug_shape_custom_color** **(** :ref:`Color<class_Color>` value **)**
- :ref:`Color<class_Color>` **get_debug_shape_custom_color** **(** **)**

The custom color to use to draw the shape in the editor and at run-time if **Visible Collision Shapes** is enabled in the **Debug** menu. This color will be highlighted at run-time if the **ShapeCast3D** is colliding with something.

If set to ``Color(0.0, 0.0, 0.0)`` (by default), the color set in :ref:`ProjectSettings.debug/shapes/collision/shape_color<class_ProjectSettings_property_debug/shapes/collision/shape_color>` is used.

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.. _class_ShapeCast3D_property_enabled:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **enabled** = ``true``

.. rst-class:: classref-property-setget

- void **set_enabled** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **is_enabled** **(** **)**

If ``true``, collisions will be reported.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_property_exclude_parent:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **exclude_parent** = ``true``

.. rst-class:: classref-property-setget

- void **set_exclude_parent_body** **(** :ref:`bool<class_bool>` value **)**
- :ref:`bool<class_bool>` **get_exclude_parent_body** **(** **)**

If ``true``, the parent node will be excluded from collision detection.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_property_margin:

.. rst-class:: classref-property

:ref:`float<class_float>` **margin** = ``0.0``

.. rst-class:: classref-property-setget

- void **set_margin** **(** :ref:`float<class_float>` value **)**
- :ref:`float<class_float>` **get_margin** **(** **)**

The collision margin for the shape. A larger margin helps detecting collisions more consistently, at the cost of precision.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_property_max_results:

.. rst-class:: classref-property

:ref:`int<class_int>` **max_results** = ``32``

.. rst-class:: classref-property-setget

- void **set_max_results** **(** :ref:`int<class_int>` value **)**
- :ref:`int<class_int>` **get_max_results** **(** **)**

The number of intersections can be limited with this parameter, to reduce the processing time.

.. rst-class:: classref-item-separator

----

.. _class_ShapeCast3D_property_shape:

.. rst-class:: classref-property

:ref:`Shape3D<class_Shape3D>` **shape**

.. rst-class:: classref-property-setget

- void **set_shape** **(** :ref:`Shape3D<class_Shape3D>` value **)**
- :ref:`Shape3D<class_Shape3D>` **get_shape** **(** **)**

The :ref:`Shape3D<class_Shape3D>`-derived shape to be used for collision queries.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_property_target_position:

.. rst-class:: classref-property

:ref:`Vector3<class_Vector3>` **target_position** = ``Vector3(0, -1, 0)``

.. rst-class:: classref-property-setget

- void **set_target_position** **(** :ref:`Vector3<class_Vector3>` value **)**
- :ref:`Vector3<class_Vector3>` **get_target_position** **(** **)**

The shape's destination point, relative to this node's ``position``.

.. rst-class:: classref-section-separator

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.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_ShapeCast3D_method_add_exception:

.. rst-class:: classref-method

void **add_exception** **(** :ref:`CollisionObject3D<class_CollisionObject3D>` node **)**

Adds a collision exception so the shape does not report collisions with the specified :ref:`CollisionObject3D<class_CollisionObject3D>` node.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_add_exception_rid:

.. rst-class:: classref-method

void **add_exception_rid** **(** :ref:`RID<class_RID>` rid **)**

Adds a collision exception so the shape does not report collisions with the specified :ref:`RID<class_RID>`.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_clear_exceptions:

.. rst-class:: classref-method

void **clear_exceptions** **(** **)**

Removes all collision exceptions for this **ShapeCast3D**.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_force_shapecast_update:

.. rst-class:: classref-method

void **force_shapecast_update** **(** **)**

Updates the collision information for the shape immediately, without waiting for the next ``_physics_process`` call. Use this method, for example, when the shape or its parent has changed state.

\ **Note:** ``enabled == true`` is not required for this to work.

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.. _class_ShapeCast3D_method_get_closest_collision_safe_fraction:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_closest_collision_safe_fraction** **(** **)** |const|

The fraction from the **ShapeCast3D**'s origin to its :ref:`target_position<class_ShapeCast3D_property_target_position>` (between 0 and 1) of how far the shape can move without triggering a collision.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_get_closest_collision_unsafe_fraction:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_closest_collision_unsafe_fraction** **(** **)** |const|

The fraction from the **ShapeCast3D**'s origin to its :ref:`target_position<class_ShapeCast3D_property_target_position>` (between 0 and 1) of how far the shape must move to trigger a collision.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_get_collider:

.. rst-class:: classref-method

:ref:`Object<class_Object>` **get_collider** **(** :ref:`int<class_int>` index **)** |const|

Returns the collided :ref:`Object<class_Object>` of one of the multiple collisions at ``index``, or ``null`` if no object is intersecting the shape (i.e. :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>` returns ``false``).

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.. _class_ShapeCast3D_method_get_collider_rid:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_collider_rid** **(** :ref:`int<class_int>` index **)** |const|

Returns the :ref:`RID<class_RID>` of the collided object of one of the multiple collisions at ``index``.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_get_collider_shape:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_collider_shape** **(** :ref:`int<class_int>` index **)** |const|

Returns the shape ID of the colliding shape of one of the multiple collisions at ``index``, or ``0`` if no object is intersecting the shape (i.e. :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>` returns ``false``).

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.. _class_ShapeCast3D_method_get_collision_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_collision_count** **(** **)** |const|

The number of collisions detected at the point of impact. Use this to iterate over multiple collisions as provided by :ref:`get_collider<class_ShapeCast3D_method_get_collider>`, :ref:`get_collider_shape<class_ShapeCast3D_method_get_collider_shape>`, :ref:`get_collision_point<class_ShapeCast3D_method_get_collision_point>`, and :ref:`get_collision_normal<class_ShapeCast3D_method_get_collision_normal>` methods.

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.. _class_ShapeCast3D_method_get_collision_mask_value:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **get_collision_mask_value** **(** :ref:`int<class_int>` layer_number **)** |const|

Returns whether or not the specified layer of the :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>` is enabled, given a ``layer_number`` between 1 and 32.

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.. _class_ShapeCast3D_method_get_collision_normal:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **get_collision_normal** **(** :ref:`int<class_int>` index **)** |const|

Returns the normal of one of the multiple collisions at ``index`` of the intersecting object.

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.. _class_ShapeCast3D_method_get_collision_point:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **get_collision_point** **(** :ref:`int<class_int>` index **)** |const|

Returns the collision point of one of the multiple collisions at ``index`` where the shape intersects the colliding object.

\ **Note:** this point is in the **global** coordinate system.

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.. _class_ShapeCast3D_method_is_colliding:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_colliding** **(** **)** |const|

Returns whether any object is intersecting with the shape's vector (considering the vector length).

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_remove_exception:

.. rst-class:: classref-method

void **remove_exception** **(** :ref:`CollisionObject3D<class_CollisionObject3D>` node **)**

Removes a collision exception so the shape does report collisions with the specified :ref:`CollisionObject3D<class_CollisionObject3D>` node.

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.. _class_ShapeCast3D_method_remove_exception_rid:

.. rst-class:: classref-method

void **remove_exception_rid** **(** :ref:`RID<class_RID>` rid **)**

Removes a collision exception so the shape does report collisions with the specified :ref:`RID<class_RID>`.

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.. _class_ShapeCast3D_method_resource_changed:

.. rst-class:: classref-method

void **resource_changed** **(** :ref:`Resource<class_Resource>` resource **)**

*Obsoleted.* Use :ref:`Resource.changed<class_Resource_signal_changed>` instead.

.. rst-class:: classref-item-separator

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.. _class_ShapeCast3D_method_set_collision_mask_value:

.. rst-class:: classref-method

void **set_collision_mask_value** **(** :ref:`int<class_int>` layer_number, :ref:`bool<class_bool>` value **)**

Based on ``value``, enables or disables the specified layer in the :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>`, given a ``layer_number`` between 1 and 32.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |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.)`