From 607d9b2d5c8b83f031f5c5ae071f0694d3511b3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matthias=20Mail=C3=A4nder?= <matthias@mailaender.name>
Date: Sat, 30 May 2020 17:40:57 +0200
Subject: [PATCH] Fix index out of bounds exception for off world aircraft.

---
 OpenRA.Game/Map/Map.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/OpenRA.Game/Map/Map.cs b/OpenRA.Game/Map/Map.cs
index 0302819fad..050fa07d1e 100644
--- a/OpenRA.Game/Map/Map.cs
+++ b/OpenRA.Game/Map/Map.cs
@@ -853,6 +853,9 @@ namespace OpenRA
 			var cell = CellContaining(pos);
 			var offset = pos - CenterOfCell(cell);
 
+			if (!Ramp.Contains(cell))
+				return new WDist(offset.Z);
+
 			var ramp = Ramp[cell];
 			if (ramp != 0)
 			{