add GiveMcvCrateAction, and wire unit crates / mcv crates / etc

OpenRA.Mods.RA/Crates/GiveMcvCrateAction.cs

@@ -0,0 +1,32 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made 
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see LICENSE.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Crates
+{
+	class GiveMcvCrateActionInfo : GiveUnitCrateActionInfo
+	{
+		public override object Create(ActorInitializer init) { return new GiveMcvCrateAction(init.self, this); }
+	}
+
+	class GiveMcvCrateAction : GiveUnitCrateAction
+	{
+		public GiveMcvCrateAction(Actor self, GiveMcvCrateActionInfo info)
+			: base(self, info) { }
+
+		public override int GetSelectionShares(Actor collector)
+		{
+			var hasBase = self.World.Queries.OwnedBy[collector.Owner].WithTrait<BaseBuilding>().Any();
+			return hasBase ? 0 : base.GetSelectionShares(collector);
+		}
+	}
+}

OpenRA.Mods.RA/OpenRA.Mods.RA.csproj

@@ -78,6 +78,7 @@
     <Compile Include="Activities\Wait.cs" />
     <Compile Include="AttackBase.cs" />
     <Compile Include="Combat.cs" />
+    <Compile Include="Crates\GiveMcvCrateAction.cs" />
     <Compile Include="Crates\GiveUnitCrateAction.cs" />
     <Compile Include="DetectCloaked.cs" />
     <Compile Include="Effects\Bullet.cs" />