From 0a7ffc8cc94cf8f0104b1071ed9684c27d0e107d Mon Sep 17 00:00:00 2001
From: Paul Chote <paul@chote.net>
Date: Sat, 2 Jan 2010 00:42:37 -0800
Subject: [PATCH] Fix deploying a mine on a mine making the game explode

---
 OpenRa.Game/Traits/Minelayer.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/OpenRa.Game/Traits/Minelayer.cs b/OpenRa.Game/Traits/Minelayer.cs
index 35b9f97e65..053c7d0d8c 100644
--- a/OpenRa.Game/Traits/Minelayer.cs
+++ b/OpenRa.Game/Traits/Minelayer.cs
@@ -14,6 +14,10 @@ namespace OpenRa.Game.Traits
 			var limitedAmmo = self.traits.GetOrDefault<LimitedAmmo>();
 			if (limitedAmmo != null && !limitedAmmo.HasAmmo())
 				return null;
+				
+			// Ensure that the cell is empty except for the minelayer
+			if (Game.UnitInfluence.GetUnitsAt( xy ).Any(a => a != self))
+				return null;
 
 			if (mi.Button == MouseButton.Right && underCursor == self)
 				return new Order("Deploy", self, null, int2.Zero, null);