Separation ray shape resource for 2D physics.
2D separation ray shape to be added as a direct child of a PhysicsBody2D or Area2D using a CollisionShape2D node. 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.
Performance: Being a primitive collision shape, SeparationRayShape2D is fast to check collisions against.
float length =
The ray's length.
bool slide_on_slope =
false (default), the shape always separates and returns a normal along its own direction.
true, the shape can return the correct normal and separate in any direction, allowing sliding motion on slopes.