copy constructors

OpenRA.Game/Widgets/WorldTooltipWidget.cs

@@ -1,4 +1,4 @@
-#region Copyright & License Information
+#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.
@@ -30,6 +30,12 @@ namespace OpenRA.Widgets
 	{
 		const int worldTooltipDelay = 10;		/* ticks */
 
+		public WorldTooltipWidget() : base() { }
+
+		public WorldTooltipWidget(Widget other) : base(other) { }
+
+		public override Widget Clone() { return new WorldTooltipWidget(this); }
+		
 		public override void Draw(World world)
 		{
 			if (Game.chrome.ticksSinceLastMove < worldTooltipDelay || world == null || world.LocalPlayer == null)