From 411f27dca888e56216b02bf4e08664324fbcaf72 Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Wed, 2 Dec 2020 15:24:55 +0100
Subject: [PATCH] make sure people don't get lost north / south of the map

---
 html/script.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/html/script.js b/html/script.js
index 23cf647..4ec3908 100644
--- a/html/script.js
+++ b/html/script.js
@@ -3643,10 +3643,14 @@ function changeCenter(init) {
     if (!init && showTrace)
         updateAddressBar();
 
-    if (rawCenter[0] < OLProj.extent_[0] || rawCenter[0] > OLProj.extent_[3]) {
+    if (rawCenter[0] < OLProj.extent_[0] || rawCenter[0] > OLProj.extent_[2]) {
         OLMap.getView().setCenter(ol.proj.fromLonLat(center));
         mapRefresh();
     }
+    if (center[1] < -85)
+        OLMap.getView().setCenter(ol.proj.fromLonLat([center[0], -85]));
+    if (center[1] > 85)
+        OLMap.getView().setCenter(ol.proj.fromLonLat([center[0], 85]));
 }
 
 function checkMovement() {