From 3b1e4d708ddf2ef5f27daa96ea55e90c53832d09 Mon Sep 17 00:00:00 2001
From: Paul Chote <pchote@users.noreply.github.com>
Date: Fri, 2 Sep 2016 19:57:32 +0100
Subject: [PATCH] Fix an off-by-one error in NormalizeFacing.

---
 OpenRA.Mods.Common/Util.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/OpenRA.Mods.Common/Util.cs b/OpenRA.Mods.Common/Util.cs
index 54a3ccc538..e0a06a46ed 100644
--- a/OpenRA.Mods.Common/Util.cs
+++ b/OpenRA.Mods.Common/Util.cs
@@ -73,12 +73,14 @@ namespace OpenRA.Mods.Common
 			}
 		}
 
+		/// <summary>Wraps an arbitrary integer facing value into the range 0 - 255</summary>
 		public static int NormalizeFacing(int f)
 		{
 			if (f >= 0)
 				return f & 0xFF;
 
-			return 0xFF - (-f & 0xFF);
+			var negative = -f & 0xFF;
+			return negative == 0 ? 0 : 256 - negative;
 		}
 
 		public static WPos BetweenCells(World w, CPos from, CPos to)