From 23ec60bc3af588da3004f79ff6b5e5a2a5d7ff77 Mon Sep 17 00:00:00 2001
From: dbauszus-glx <dennis.bauszus@geolytix.co.uk>
Date: Thu, 16 Nov 2023 17:08:48 +0000
Subject: [PATCH 1/4] mvt clear source and refresh

---
 lib/layer/format/mvt.mjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/layer/format/mvt.mjs b/lib/layer/format/mvt.mjs
index c9cf0360d1..63f9faf394 100644
--- a/lib/layer/format/mvt.mjs
+++ b/lib/layer/format/mvt.mjs
@@ -8,7 +8,7 @@ export default layer => {
 
   layer.reload = () => {
 
-    //layer.source.clear()
+    layer.source.clear()
     layer.source.refresh()
     layer.tilesLoaded = []
     layer.featureSource.refresh()

From 7604d0920f2cd2263b628df744f4f3252928b3a8 Mon Sep 17 00:00:00 2001
From: dbauszus-glx <dennis.bauszus@geolytix.co.uk>
Date: Fri, 17 Nov 2023 11:22:04 +0000
Subject: [PATCH 2/4] sleep for a second after new location

---
 lib/layer/decorate.mjs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/layer/decorate.mjs b/lib/layer/decorate.mjs
index 354fe8274d..0f43bb0926 100644
--- a/lib/layer/decorate.mjs
+++ b/lib/layer/decorate.mjs
@@ -60,6 +60,8 @@ export default async layer => {
         layer.draw?.defaults || {}))
     })
 
+    await sleep(1000)
+
     // Layer must be reloaded to reflect geometry changes.
     layer.reload()
 
@@ -216,6 +218,10 @@ export default async layer => {
   return layer;
 }
 
+function sleep(delay) {
+  return new Promise((resolve) => setTimeout(resolve, delay))
+}
+
 function show() {
 
   // Show the layer

From 8e464826b9fde4b25477d0d274466ec8c529e3ff Mon Sep 17 00:00:00 2001
From: dbauszus-glx <dennis.bauszus@geolytix.co.uk>
Date: Fri, 17 Nov 2023 17:56:01 +0000
Subject: [PATCH 3/4] check for new features loaded in mvt tiles.

---
 lib/layer/decorate.mjs | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/lib/layer/decorate.mjs b/lib/layer/decorate.mjs
index 0f43bb0926..9b6233866e 100644
--- a/lib/layer/decorate.mjs
+++ b/lib/layer/decorate.mjs
@@ -60,7 +60,34 @@ export default async layer => {
         layer.draw?.defaults || {}))
     })
 
-    await sleep(1000)
+    // Check whether feature is loaded on MVT update.
+    if (layer.format === 'mvt') {
+
+      layer.features = []
+
+      // Concat layer.features array with features from tileloadend
+      layer.source.on('tileloadend', concatFeatures);
+
+      function concatFeatures(e) {
+
+        layer.features = layer.features.concat(e.tile.getFeatures())
+      }
+
+      setTimeout(checkFeature, 1000)
+
+      function checkFeature() {
+  
+        let found = layer.features?.find(F => F.properties?.id === location.id)
+  
+        if (found) {
+
+          layer.source.un('tileloadend', concatFeatures);
+        } else {
+
+          layer.reload()
+        }
+      }
+    }
 
     // Layer must be reloaded to reflect geometry changes.
     layer.reload()

From a5ea34e1022707ae9a00e5de578b8eb0369ef54c Mon Sep 17 00:00:00 2001
From: dbauszus-glx <dennis.bauszus@geolytix.co.uk>
Date: Fri, 17 Nov 2023 17:56:27 +0000
Subject: [PATCH 4/4] remove sleep method

---
 lib/layer/decorate.mjs | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/lib/layer/decorate.mjs b/lib/layer/decorate.mjs
index 9b6233866e..b8f40c8478 100644
--- a/lib/layer/decorate.mjs
+++ b/lib/layer/decorate.mjs
@@ -245,10 +245,6 @@ export default async layer => {
   return layer;
 }
 
-function sleep(delay) {
-  return new Promise((resolve) => setTimeout(resolve, delay))
-}
-
 function show() {
 
   // Show the layer