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RayCast3D

Inherits: Node3D < Node < Object

A ray in 3D space, used to find the first CollisionObject3D it intersects.

描述

A raycast represents a ray from its origin to its target_position that finds the closest CollisionObject3D along its path, if it intersects any. This is useful for a lot of things, such as

RayCast3D can ignore some objects by adding them to an exception list, by making its detection reporting ignore Area3Ds (collide_with_areas) or PhysicsBody3Ds (collide_with_bodies), or by configuring physics layers.

RayCast3D calculates intersection every physics frame, and it holds the result until the next physics frame. For an immediate raycast, or if you want to configure a RayCast3D multiple times within the same physics frame, use force_raycast_update.

To sweep over a region of 3D space, you can approximate the region with multiple RayCast3Ds or use ShapeCast3D.

教程

• Ray-casting

• 3D Voxel Demo

属性

bool	collide_with_areas	false
bool	collide_with_bodies	true
int	collision_mask	1
Color	debug_shape_custom_color	Color(0, 0, 0, 1)
int	debug_shape_thickness	2
bool	enabled	true
bool	exclude_parent	true
bool	hit_back_faces	true
bool	hit_from_inside	false
Vector3	target_position	Vector3(0, -1, 0)

Methods

void	add_exception ( CollisionObject3D node )
void	add_exception_rid ( RID rid )
void	clear_exceptions ( )
void	force_raycast_update ( )
Object	get_collider ( ) const
RID	get_collider_rid ( ) const
int	get_collider_shape ( ) const
int	get_collision_face_index ( ) const
bool	get_collision_mask_value ( int layer_number ) const
Vector3	get_collision_normal ( ) const
Vector3	get_collision_point ( ) const
bool	is_colliding ( ) const
void	remove_exception ( CollisionObject3D node )
void	remove_exception_rid ( RID rid )
void	set_collision_mask_value ( int layer_number, bool value )

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Property Descriptions

bool collide_with_areas = false

• void set_collide_with_areas ( bool value )

• bool is_collide_with_areas_enabled ( )

If true, collisions with Area3Ds will be reported.

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bool collide_with_bodies = true

• void set_collide_with_bodies ( bool value )

• bool is_collide_with_bodies_enabled ( )

If true, collisions with PhysicsBody3Ds will be reported.

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int collision_mask = 1

• void set_collision_mask ( int value )

• int get_collision_mask ( )

The ray's collision mask. Only objects in at least one collision layer enabled in the mask will be detected. See Collision layers and masks in the documentation for more information.

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Color debug_shape_custom_color = Color(0, 0, 0, 1)

• void set_debug_shape_custom_color ( Color value )

• 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 RayCast3D is colliding with something.

If set to Color(0.0, 0.0, 0.0) (by default), the color set in ProjectSettings.debug/shapes/collision/shape_color is used.

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int debug_shape_thickness = 2

• void set_debug_shape_thickness ( int value )

• int get_debug_shape_thickness ( )

If set to 1, a line is used as the debug shape. Otherwise, a truncated pyramid is drawn to represent the RayCast3D. Requires Visible Collision Shapes to be enabled in the Debug menu for the debug shape to be visible at run-time.

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bool enabled = true

• void set_enabled ( bool value )

• bool is_enabled ( )

If true, collisions will be reported.

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bool exclude_parent = true

• void set_exclude_parent_body ( bool value )

• bool get_exclude_parent_body ( )

If true, collisions will be ignored for this RayCast3D's immediate parent.

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bool hit_back_faces = true

• void set_hit_back_faces ( bool value )

• bool is_hit_back_faces_enabled ( )

If true, the ray will hit back faces with concave polygon shapes with back face enabled or heightmap shapes.

---

bool hit_from_inside = false

• void set_hit_from_inside ( bool value )

• bool is_hit_from_inside_enabled ( )

If true, the ray will detect a hit when starting inside shapes. In this case the collision normal will be Vector3(0, 0, 0). Does not affect shapes with no volume like concave polygon or heightmap.

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Vector3 target_position = Vector3(0, -1, 0)

• void set_target_position ( Vector3 value )

• Vector3 get_target_position ( )

The ray's destination point, relative to the RayCast's position.

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Method Descriptions

void add_exception ( CollisionObject3D node )

Adds a collision exception so the ray does not report collisions with the specified CollisionObject3D node.

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void add_exception_rid ( RID rid )

Adds a collision exception so the ray does not report collisions with the specified RID.

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void clear_exceptions ( )

Removes all collision exceptions for this ray.

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void force_raycast_update ( )

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

Note: enabled does not need to be true for this to work.

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Object get_collider ( ) const

Returns the first object that the ray intersects, or null if no object is intersecting the ray (i.e. is_colliding returns false).

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RID get_collider_rid ( ) const

Returns the RID of the first object that the ray intersects, or an empty RID if no object is intersecting the ray (i.e. is_colliding returns false).

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int get_collider_shape ( ) const

Returns the shape ID of the first object that the ray intersects, or 0 if no object is intersecting the ray (i.e. is_colliding returns false).

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int get_collision_face_index ( ) const

Returns the collision object's face index at the collision point, or -1 if the shape intersecting the ray is not a ConcavePolygonShape3D.

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bool get_collision_mask_value ( int layer_number ) const

Returns whether or not the specified layer of the collision_mask is enabled, given a layer_number between 1 and 32.

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Vector3 get_collision_normal ( ) const

Returns the normal of the intersecting object's shape at the collision point, or Vector3(0, 0, 0) if the ray starts inside the shape and hit_from_inside is true.

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Vector3 get_collision_point ( ) const

Returns the collision point at which the ray intersects the closest object.

Note: This point is in the global coordinate system.

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bool is_colliding ( ) const

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

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void remove_exception ( CollisionObject3D node )

Removes a collision exception so the ray does report collisions with the specified CollisionObject3D node.

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void remove_exception_rid ( RID rid )

Removes a collision exception so the ray does report collisions with the specified RID.

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void set_collision_mask_value ( int layer_number, bool value )

Based on value, enables or disables the specified layer in the collision_mask, given a layer_number between 1 and 32.