From 4432c071cc629e0c31d7fe2446d1ce040cc85324 Mon Sep 17 00:00:00 2001
From: abcdefg30 <alphabet@streber24.de>
Date: Tue, 13 Oct 2015 21:48:25 +0200
Subject: [PATCH] Fix aircraft repulsing other aircraft when not being
 repulsable themselves

---
 OpenRA.Mods.Common/Traits/Air/Aircraft.cs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/OpenRA.Mods.Common/Traits/Air/Aircraft.cs b/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
index 620d732280..333a6de747 100644
--- a/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
+++ b/OpenRA.Mods.Common/Traits/Air/Aircraft.cs
@@ -199,8 +199,14 @@ namespace OpenRA.Mods.Common.Traits
 				return WVec.Zero;
 
 			var repulsionForce = self.World.FindActorsInCircle(self.CenterPosition, Info.IdealSeparation)
-				.Where(a => !a.IsDead && a.Info.HasTraitInfo<AircraftInfo>()
-					&& a.Info.TraitInfo<AircraftInfo>().CruiseAltitude == Info.CruiseAltitude)
+				.Where(a =>
+				{
+					if (a.IsDead)
+						return false;
+
+					var ai = a.Info.TraitInfoOrDefault<AircraftInfo>();
+					return ai != null && ai.Repulsable && ai.CruiseAltitude == Info.CruiseAltitude;
+				})
 				.Select(GetRepulsionForce)
 				.Aggregate(WVec.Zero, (a, b) => a + b);