Restore RayShape as a regular shape type

Partial revert from previously removing ray shapes completely, added
back as a shape type but without the specific character controller code.

4 files changed, 77 insertions, 16 deletions

diff --git a/doc/classes/PhysicsServer2D.xml b/doc/classes/PhysicsServer2D.xml
index 1df2fd0158..ae6b5fda51 100644
--- a/doc/classes/PhysicsServer2D.xml
+++ b/doc/classes/PhysicsServer2D.xml
@@ -716,6 +716,11 @@
 				Sets a joint parameter. See [enum JointParam] for a list of available parameters.
 			</description>
 		</method>
+		<method name="ray_shape_create">
+			<return type="RID" />
+			<description>
+			</description>
+		</method>
 		<method name="rectangle_shape_create">
 			<return type="RID" />
 			<description>
@@ -840,25 +845,27 @@
 		<constant name="SHAPE_WORLD_MARGIN" value="0" enum="ShapeType">
 			This is the constant for creating world margin shapes. A world margin shape is an [i]infinite[/i] line with an origin point, and a normal. Thus, it can be used for front/behind checks.
 		</constant>
-		<constant name="SHAPE_SEGMENT" value="1" enum="ShapeType">
+		<constant name="SHAPE_RAY" value="1" enum="ShapeType">
+		</constant>
+		<constant name="SHAPE_SEGMENT" value="2" enum="ShapeType">
 			This is the constant for creating segment shapes. A segment shape is a [i]finite[/i] line from a point A to a point B. It can be checked for intersections.
 		</constant>
-		<constant name="SHAPE_CIRCLE" value="2" enum="ShapeType">
+		<constant name="SHAPE_CIRCLE" value="3" enum="ShapeType">
 			This is the constant for creating circle shapes. A circle shape only has a radius. It can be used for intersections and inside/outside checks.
 		</constant>
-		<constant name="SHAPE_RECTANGLE" value="3" enum="ShapeType">
+		<constant name="SHAPE_RECTANGLE" value="4" enum="ShapeType">
 			This is the constant for creating rectangle shapes. A rectangle shape is defined by a width and a height. It can be used for intersections and inside/outside checks.
 		</constant>
-		<constant name="SHAPE_CAPSULE" value="4" enum="ShapeType">
+		<constant name="SHAPE_CAPSULE" value="5" enum="ShapeType">
 			This is the constant for creating capsule shapes. A capsule shape is defined by a radius and a length. It can be used for intersections and inside/outside checks.
 		</constant>
-		<constant name="SHAPE_CONVEX_POLYGON" value="5" enum="ShapeType">
+		<constant name="SHAPE_CONVEX_POLYGON" value="6" enum="ShapeType">
 			This is the constant for creating convex polygon shapes. A polygon is defined by a list of points. It can be used for intersections and inside/outside checks. Unlike the [member CollisionPolygon2D.polygon] property, polygons modified with [method shape_set_data] do not verify that the points supplied form is a convex polygon.
 		</constant>
-		<constant name="SHAPE_CONCAVE_POLYGON" value="6" enum="ShapeType">
+		<constant name="SHAPE_CONCAVE_POLYGON" value="7" enum="ShapeType">
 			This is the constant for creating concave polygon shapes. A polygon is defined by a list of points. It can be used for intersections checks, but not for inside/outside checks.
 		</constant>
-		<constant name="SHAPE_CUSTOM" value="7" enum="ShapeType">
+		<constant name="SHAPE_CUSTOM" value="8" enum="ShapeType">
 			This constant is used internally by the engine. Any attempt to create this kind of shape results in an error.
 		</constant>
 		<constant name="AREA_PARAM_GRAVITY" value="0" enum="AreaParameter">
diff --git a/doc/classes/PhysicsServer3D.xml b/doc/classes/PhysicsServer3D.xml
index 33eb0de698..a5234e90e7 100644
--- a/doc/classes/PhysicsServer3D.xml
+++ b/doc/classes/PhysicsServer3D.xml
@@ -849,6 +849,11 @@
 			<description>
 			</description>
 		</method>
+		<method name="ray_shape_create">
+			<return type="RID" />
+			<description>
+			</description>
+		</method>
 		<method name="set_active">
 			<return type="void" />
 			<argument index="0" name="active" type="bool" />
@@ -1171,31 +1176,34 @@
 		<constant name="SHAPE_PLANE" value="0" enum="ShapeType">
 			The [Shape3D] is a [WorldMarginShape3D].
 		</constant>
-		<constant name="SHAPE_SPHERE" value="1" enum="ShapeType">
+		<constant name="SHAPE_RAY" value="1" enum="ShapeType">
+			The [Shape3D] is a [RayShape3D].
+		</constant>
+		<constant name="SHAPE_SPHERE" value="2" enum="ShapeType">
 			The [Shape3D] is a [SphereShape3D].
 		</constant>
-		<constant name="SHAPE_BOX" value="2" enum="ShapeType">
+		<constant name="SHAPE_BOX" value="3" enum="ShapeType">
 			The [Shape3D] is a [BoxShape3D].
 		</constant>
-		<constant name="SHAPE_CAPSULE" value="3" enum="ShapeType">
+		<constant name="SHAPE_CAPSULE" value="4" enum="ShapeType">
 			The [Shape3D] is a [CapsuleShape3D].
 		</constant>
-		<constant name="SHAPE_CYLINDER" value="4" enum="ShapeType">
+		<constant name="SHAPE_CYLINDER" value="5" enum="ShapeType">
 			The [Shape3D] is a [CylinderShape3D].
 		</constant>
-		<constant name="SHAPE_CONVEX_POLYGON" value="5" enum="ShapeType">
+		<constant name="SHAPE_CONVEX_POLYGON" value="6" enum="ShapeType">
 			The [Shape3D] is a [ConvexPolygonShape3D].
 		</constant>
-		<constant name="SHAPE_CONCAVE_POLYGON" value="6" enum="ShapeType">
+		<constant name="SHAPE_CONCAVE_POLYGON" value="7" enum="ShapeType">
 			The [Shape3D] is a [ConcavePolygonShape3D].
 		</constant>
-		<constant name="SHAPE_HEIGHTMAP" value="7" enum="ShapeType">
+		<constant name="SHAPE_HEIGHTMAP" value="8" enum="ShapeType">
 			The [Shape3D] is a [HeightMapShape3D].
 		</constant>
-		<constant name="SHAPE_SOFT_BODY" value="8" enum="ShapeType">
+		<constant name="SHAPE_SOFT_BODY" value="9" enum="ShapeType">
 			The [Shape3D] is a [SoftBody3D].
 		</constant>
-		<constant name="SHAPE_CUSTOM" value="9" enum="ShapeType">
+		<constant name="SHAPE_CUSTOM" value="10" enum="ShapeType">
 			This constant is used internally by the engine. Any attempt to create this kind of shape results in an error.
 		</constant>
 		<constant name="AREA_PARAM_GRAVITY" value="0" enum="AreaParameter">
diff --git a/doc/classes/RayShape2D.xml b/doc/classes/RayShape2D.xml
new file mode 100644
index 0000000000..432c650074
--- /dev/null
+++ b/doc/classes/RayShape2D.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="RayShape2D" inherits="Shape2D" version="4.0">
+	<brief_description>
+		Ray shape for 2D collisions.
+	</brief_description>
+	<description>
+		Ray shape for 2D collisions. A ray is not really a collision body; instead, it tries to separate itself from whatever is touching its far endpoint. It's often useful for characters.
+	</description>
+	<tutorials>
+	</tutorials>
+	<methods>
+	</methods>
+	<members>
+		<member name="length" type="float" setter="set_length" getter="get_length" default="20.0">
+			The ray's length.
+		</member>
+		<member name="slips_on_slope" type="bool" setter="set_slips_on_slope" getter="get_slips_on_slope" default="false">
+			If [code]true[/code], allow the shape to return the correct normal.
+		</member>
+	</members>
+	<constants>
+	</constants>
+</class>
diff --git a/doc/classes/RayShape3D.xml b/doc/classes/RayShape3D.xml
new file mode 100644
index 0000000000..9839044c30
--- /dev/null
+++ b/doc/classes/RayShape3D.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<class name="RayShape3D" inherits="Shape3D" version="4.0">
+	<brief_description>
+		Ray shape for 3D collisions.
+	</brief_description>
+	<description>
+		Ray shape for 3D collisions, which can be set into a [PhysicsBody3D] or [Area3D]. A ray is not really a collision body; instead, it tries to separate itself from whatever is touching its far endpoint. It's often useful for characters.
+	</description>
+	<tutorials>
+	</tutorials>
+	<methods>
+	</methods>
+	<members>
+		<member name="length" type="float" setter="set_length" getter="get_length" default="1.0">
+			The ray's length.
+		</member>
+		<member name="slips_on_slope" type="bool" setter="set_slips_on_slope" getter="get_slips_on_slope" default="false">
+			If [code]true[/code], allow the shape to return the correct normal.
+		</member>
+	</members>
+	<constants>
+	</constants>
+</class>