From ea243b85583596750c7881f0ab5ca44d30e9be7d Mon Sep 17 00:00:00 2001
From: RoosterDragon <RoosterDragon@outlook.com>
Date: Sat, 26 Mar 2022 14:48:44 +0000
Subject: [PATCH] Fix crash in TSEditorResourceLayer when adding resources.

Ensure cells are within map bounds when checking if adjacent cells should be cleared during resource placement.
---
 OpenRA.Mods.Cnc/Traits/World/TSEditorResourceLayer.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/OpenRA.Mods.Cnc/Traits/World/TSEditorResourceLayer.cs b/OpenRA.Mods.Cnc/Traits/World/TSEditorResourceLayer.cs
index 496b3a6a28f0..92757890bcbc 100644
--- a/OpenRA.Mods.Cnc/Traits/World/TSEditorResourceLayer.cs
+++ b/OpenRA.Mods.Cnc/Traits/World/TSEditorResourceLayer.cs
@@ -99,6 +99,9 @@ protected override int AddResource(string resourceType, CPos cell, int amount =
 			var resourceIsVeins = resourceType == info.VeinType;
 			foreach (var c in Common.Util.ExpandFootprint(cell, false))
 			{
+				if (!Map.Resources.Contains(c))
+					continue;
+
 				var resourceIndex = Map.Resources[c].Type;
 				if (resourceIndex == 0 || !ResourceTypesByIndex.TryGetValue(resourceIndex, out var neighourResourceType))
 					neighourResourceType = null;