hsm/limbo_hsm.cpp

@@ -265,46 +265,22 @@ void LimboHSM::_validate_property(PropertyInfo &p_property) const {
 	}
 }
 
-void LimboHSM::_exit_if_not_inside_tree() {
-	if (is_active() && !is_inside_tree()) {
-		_exit();
-	}
-}
-
 void LimboHSM::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_POST_ENTER_TREE: {
 			if (was_active && is_root()) {
 				// Re-activate the root HSM if it was previously active.
-				// Typically, this happens when the node is re-entered scene repeatedly (such as with object pooling).
+				// Typically, this happens when the node is re-entered scene repeatedly (e.g., re-parenting, pooling).
 				set_active(true);
 			}
 		} break;
 		case NOTIFICATION_EXIT_TREE: {
 			if (is_root()) {
-				// Exit the state machine if the root HSM is no longer in the scene tree (except when being reparented).
-				// This ensures that resources and signal connections are released if active.
-				was_active = is_active();
+				// Remember active status for re-parenting and exit state machine
+				// to release resources and signal connections if active.
+				was_active = active;
 				if (is_active()) {
-					// Check if the HSM node is being deleted.
-					bool is_being_deleted = false;
-					Node *node = this;
-					while (node) {
-						if (node->is_queued_for_deletion()) {
-							is_being_deleted = true;
-							break;
-						}
-						node = node->get_parent();
-					}
-
-					if (is_being_deleted) {
-						// Exit the state machine immediately if the HSM is being deleted.
-						_exit();
-					} else {
-						// Use deferred mode to prevent exiting during Node re-parenting.
-						// This allows the HSM to remain active when it (or one of its parents) is reparented.
-						callable_mp(this, &LimboHSM::_exit_if_not_inside_tree).call_deferred();
-					}
+					_exit();
 				}
 			}
 		} break;

hsm/limbo_hsm.h

@@ -63,7 +63,6 @@ private:
 	HashMap<TransitionKey, Transition, TransitionKeyHasher> transitions;
 
 	void _get_transition(LimboState *p_from_state, const StringName &p_event, Transition &r_transition) const;
-	void _exit_if_not_inside_tree();
 
 protected:
 	static void _bind_methods();