From 569966f3bbe82d768baf3fd26680462df22d29ad Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Mon, 8 Aug 2016 19:04:12 -0300
Subject: [PATCH] prevent bug due to scripts not working in editor and notifier
 sending signals to it.

(cherry picked from commit 37b5e99bc27a2a6a915accb814b0b618c66b0bb7)
---
 scene/2d/visibility_notifier_2d.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scene/2d/visibility_notifier_2d.cpp b/scene/2d/visibility_notifier_2d.cpp
index 5411950976c..852bc187d23 100644
--- a/scene/2d/visibility_notifier_2d.cpp
+++ b/scene/2d/visibility_notifier_2d.cpp
@@ -40,6 +40,9 @@ void VisibilityNotifier2D::_enter_viewport(Viewport* p_viewport) {
 	ERR_FAIL_COND(viewports.has(p_viewport));
 	viewports.insert(p_viewport);
 
+	if (is_inside_tree() && get_tree()->is_editor_hint())
+		return;
+
 	if (viewports.size()==1) {
 		emit_signal(SceneStringNames::get_singleton()->enter_screen);
 
@@ -54,6 +57,9 @@ void VisibilityNotifier2D::_exit_viewport(Viewport* p_viewport){
 	ERR_FAIL_COND(!viewports.has(p_viewport));
 	viewports.erase(p_viewport);
 
+	if (is_inside_tree() && get_tree()->is_editor_hint())
+		return;
+
 	emit_signal(SceneStringNames::get_singleton()->exit_viewport,p_viewport);
 	if (viewports.size()==0) {
 		emit_signal(SceneStringNames::get_singleton()->exit_screen);