A ray in 2D space, used to find the first [CollisionObject2D] it intersects. A raycast represents a ray from its origin to its [member target_position] that finds the closest [CollisionObject2D] along its path, if it intersects any. This is useful for a lot of things, such as [RayCast2D] can ignore some objects by adding them to an exception list, by making its detection reporting ignore [Area2D]s ([member collide_with_areas]) or [PhysicsBody2D]s ([member collide_with_bodies]), or by configuring physics layers. [RayCast2D] 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 [RayCast2D] multiple times within the same physics frame, use [method force_raycast_update]. To sweep over a region of 2D space, you can approximate the region with multiple [RayCast2D]s or use [ShapeCast2D]. $DOCS_URL/tutorials/physics/ray-casting.html Adds a collision exception so the ray does not report collisions with the specified [CollisionObject2D] node. Adds a collision exception so the ray does not report collisions with the specified [RID]. Removes all collision exceptions for this ray. Updates the collision information for the ray. Use this method to update the collision information immediately instead of waiting for the next [code]_physics_process[/code] call, for example if the ray or its parent has changed state. [b]Note:[/b] [member enabled] does not need to be [code]true[/code] for this to work. Returns the first object that the ray intersects, or [code]null[/code] if no object is intersecting the ray (i.e. [method is_colliding] returns [code]false[/code]). Returns the [RID] of the first object that the ray intersects, or an empty [RID] if no object is intersecting the ray (i.e. [method is_colliding] returns [code]false[/code]). Returns the shape ID of the first object that the ray intersects, or [code]0[/code] if no object is intersecting the ray (i.e. [method is_colliding] returns [code]false[/code]). To get the intersected shape node, for a [CollisionObject2D] target, use: [codeblocks] [gdscript] var target = get_collider() # A CollisionObject2D. var shape_id = get_collider_shape() # The shape index in the collider. var owner_id = target.shape_find_owner(shape_id) # The owner ID in the collider. var shape = target.shape_owner_get_owner(owner_id) [/gdscript] [csharp] var target = (CollisionObject2D)GetCollider(); // A CollisionObject2D. var shapeId = GetColliderShape(); // The shape index in the collider. var ownerId = target.ShapeFindOwner(shapeId); // The owner ID in the collider. var shape = target.ShapeOwnerGetOwner(ownerId); [/csharp] [/codeblocks] Returns whether or not the specified layer of the [member collision_mask] is enabled, given a [param layer_number] between 1 and 32. Returns the normal of the intersecting object's shape at the collision point, or [code]Vector2(0, 0)[/code] if the ray starts inside the shape and [member hit_from_inside] is [code]true[/code]. Returns the collision point at which the ray intersects the closest object. If [member hit_from_inside] is [code]true[/code] and the ray starts inside of a collision shape, this function will return the origin point of the ray. [b]Note:[/b] This point is in the [b]global[/b] coordinate system. Returns whether any object is intersecting with the ray's vector (considering the vector length). Removes a collision exception so the ray does report collisions with the specified [CollisionObject2D] node. Removes a collision exception so the ray does report collisions with the specified [RID]. Based on [param value], enables or disables the specified layer in the [member collision_mask], given a [param layer_number] between 1 and 32. If [code]true[/code], collision with [Area2D]s will be reported. If [code]true[/code], collision with [PhysicsBody2D]s will be reported. The ray's collision mask. Only objects in at least one collision layer enabled in the mask will be detected. See [url=$DOCS_URL/tutorials/physics/physics_introduction.html#collision-layers-and-masks]Collision layers and masks[/url] in the documentation for more information. If [code]true[/code], collisions will be reported. If [code]true[/code], the parent node will be excluded from collision detection. If [code]true[/code], the ray will detect a hit when starting inside shapes. In this case the collision normal will be [code]Vector2(0, 0)[/code]. Does not affect concave polygon shapes. The ray's destination point, relative to the RayCast's [code]position[/code].