fix issues with mpspawn and waypoint sprites

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

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -60,6 +60,7 @@
     <Compile Include="Activities\Demolish.cs" />
     <Compile Include="Activities\Enter.cs" />
     <Compile Include="Activities\EnterTransport.cs" />
+    <Compile Include="Render\RenderEditorOnly.cs" />
     <Compile Include="SmokeTrailWhenDamaged.cs" />
     <Compile Include="Strategic\StrategicVictoryConditions.cs" />
     <Compile Include="Strategic\StrategicPoint.cs" />

OpenRA.Mods.RA/Render/RenderEditorOnly.cs

@@ -0,0 +1,28 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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 System.Collections.Generic;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Render
+{
+	class RenderEditorOnlyInfo : RenderSimpleInfo
+	{
+		public override object Create(ActorInitializer init) { return new RenderEditorOnly(init.self); }
+	}
+
+	class RenderEditorOnly : RenderSimple
+	{
+		public RenderEditorOnly(Actor self) : base(self, () => 0) { }
+
+		static readonly Renderable[] Nothing = { };
+		public override IEnumerable<Renderable> Render(Actor self) { return Nothing; }
+	}
+}