From 914731c8a38e02a4c96bac4a95267e999b596ae3 Mon Sep 17 00:00:00 2001
From: glax <johanna@bernloehr.eu>
Date: Fri, 21 Apr 2023 18:34:49 +0200
Subject: [PATCH] Prevent other thread from changing collection
 /multithreading)

---
 Pathfinding/RegionManager.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Pathfinding/RegionManager.cs b/Pathfinding/RegionManager.cs
index f2745ea..7e72bf4 100644
--- a/Pathfinding/RegionManager.cs
+++ b/Pathfinding/RegionManager.cs
@@ -29,6 +29,8 @@ namespace Pathfinding
             
             Region? loadedRegion = RegionFromId(id);
 
+            if(_regions.TryGetValue(id, out Region? retRegion2)) //Prevent other thread from changing collection
+                return retRegion2;
             if(loadedRegion is not null)
                 _regions.TryAdd(loadedRegion.regionHash, loadedRegion);