Use floor normal instead of Vector3::UP

rust/src/player/mod.rs

@@ -114,7 +114,7 @@ impl<T: IPlayer + ICharacterBody3D + WithBaseField> PlayerCommon for T {
                 && let Some(collider) = collision.get_collider()
             {
                 // Detect if it's floor we're contacting with
-                if collision.get_normal().dot(Vector3::UP) > 0.95 {
+                if collision.get_normal().dot(self.base().get_floor_normal()) > 0.95 {
                     if let Ok(footstep_box) = collider.try_cast::<FootstepBox>() {
                         self.set_walk_kind(footstep_box.bind().kind);
                     } else {