RayCast2D: Fix reporting old collider after collision ended

It now behaves the same as RayCast (3D).
Fixed documentation accordingly and documented new configuration options.

Supersedes and closes #20567.

1 files changed, 2 insertions, 0 deletions

diff --git a/scene/2d/ray_cast_2d.cpp b/scene/2d/ray_cast_2d.cpp
index 9582c08110..d9b3cb07fc 100644
--- a/scene/2d/ray_cast_2d.cpp
+++ b/scene/2d/ray_cast_2d.cpp
@@ -218,6 +218,8 @@ void RayCast2D::_update_raycast_state() {
 		against_shape = rr.shape;
 	} else {
 		collided = false;
+		against = 0;
+		against_shape = 0;
 	}
 }