Make c17 invulnerable

OpenRA.Mods.RA/Invulnerable.cs

@@ -0,0 +1,36 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using OpenRA.GameRules;
+using OpenRA.Mods.RA.Effects;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	class InvulnerableInfo : TraitInfo<Invulnerable> {}
+
+	class Invulnerable : IDamageModifier
+	{
+		public float GetDamageModifier( WarheadInfo warhead )
+		{
+			return 0.0f;
+		}
+	}
+}