Expose upgrades to map scripts.

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

@@ -568,6 +568,7 @@
     <Compile Include="KillsSelf.cs" />
     <Compile Include="Warheads\GrantUpgradeWarhead.cs" />
     <Compile Include="Crates\GrantUpgradeCrateAction.cs" />
+    <Compile Include="Scripting\Properties\UpgradeProperties.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.Game\OpenRA.Game.csproj">

OpenRA.Mods.RA/Scripting/Properties/UpgradeProperties.cs

@@ -0,0 +1,50 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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 COPYING.
+ */
+#endregion
+
+using OpenRA.Scripting;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Scripting
+{
+	[ScriptPropertyGroup("General")]
+	public class UpgradeProperties : ScriptActorProperties, Requires<UpgradeManagerInfo>
+	{
+		UpgradeManager um;
+		public UpgradeProperties(ScriptContext context, Actor self)
+			: base(context, self)
+		{
+			um = self.Trait<UpgradeManager>();
+		}
+
+		[Desc("Grant an upgrade to this actor.")]
+		public void GrantUpgrade(string upgrade)
+		{
+			um.GrantUpgrade(self, upgrade, this);
+		}
+
+		[Desc("Revoke an upgrade that was previously granted using GrantUpgrade.")]
+		public void RevokeUpgrade(string upgrade)
+		{
+			um.RevokeUpgrade(self, upgrade, this);
+		}
+
+		[Desc("Grant a limited-time upgrade to this actor.")]
+		public void GrantTimedUpgrade(string upgrade, int duration)
+		{
+			um.GrantTimedUpgrade(self, upgrade, duration);
+		}
+
+		[Desc("Check whether this actor accepts a specific upgrade.")]
+		public bool AcceptsUpgrade(string upgrade)
+		{
+			return um.AcceptsUpgrade(self, upgrade);
+		}
+	}
+}