From 2acfc23f18d77ab695de1cf515a92abafe1ba42c Mon Sep 17 00:00:00 2001
From: Paul Chote <paul@chote.net>
Date: Sat, 23 Aug 2014 10:52:36 +1200
Subject: [PATCH] Account for map edges in Shroud.IsExploredCore.

---
 OpenRA.Game/Traits/World/Shroud.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/OpenRA.Game/Traits/World/Shroud.cs b/OpenRA.Game/Traits/World/Shroud.cs
index e579db257f..ed3233f52e 100644
--- a/OpenRA.Game/Traits/World/Shroud.cs
+++ b/OpenRA.Game/Traits/World/Shroud.cs
@@ -41,6 +41,7 @@ namespace OpenRA.Traits
 		public int Hash { get; private set; }
 
 		static readonly Func<CPos, bool> TruthPredicate = cell => true;
+		readonly Func<CPos, bool> shroudEdgeTest;
 		readonly Func<CPos, bool> fastExploredTest;
 		readonly Func<CPos, bool> slowExploredTest;
 		readonly Func<CPos, bool> fastVisibleTest;
@@ -63,6 +64,7 @@ namespace OpenRA.Traits
 
 			fogVisibilities = Exts.Lazy(() => self.TraitsImplementing<IFogVisibilityModifier>().ToArray());
 
+			shroudEdgeTest = cell => map.Contains(cell);
 			fastExploredTest = IsExploredCore;
 			slowExploredTest = IsExplored;
 			fastVisibleTest = IsVisibleCore;
@@ -256,9 +258,9 @@ namespace OpenRA.Traits
 			if (!map.Cells.Contains(region))
 				return slowExploredTest;
 
-			// If shroud isn't enabled, then we can see everything.
+			// If shroud isn't enabled, then we can see everything inside the map.
 			if (!ShroudEnabled)
-				return TruthPredicate;
+				return shroudEdgeTest;
 
 			// If shroud is enabled, we can use the fast test that just does the core check.
 			return fastExploredTest;