create widgets on demand

OpenRA.Mods.RA/Widgets/Delegates/IngameChromeDelegate.cs

@@ -21,9 +21,6 @@ namespace OpenRA.Mods.RA.Widgets.Delegates
 			var gameRoot = r.GetWidget("INGAME_ROOT");
 			var optionsBG = gameRoot.GetWidget("INGAME_OPTIONS_BG");
 			
-			Game.BeforeGameStart += () => Widget.OpenWindow("INGAME_ROOT");
-			Game.AfterGameStart += () => gameRoot.GetWidget<RadarBinWidget>("INGAME_RADAR_BIN").SetWorld(Game.world);
-
 			r.GetWidget("INGAME_OPTIONS_BUTTON").OnMouseUp = mi => {
 				optionsBG.Visible = !optionsBG.Visible;
 				return true;

OpenRA.Mods.RA/Widgets/RadarBinWidget.cs

@@ -163,6 +163,9 @@ namespace OpenRA.Mods.RA.Widgets
 		int updateTicks = 0;
 		public override void Tick(World w)
 		{
+			if( world != w )
+				SetWorld( w );
+
 			var hasRadarNew = world.Queries.OwnedBy[world.LocalPlayer]
 				.WithTrait<ProvidesRadar>()
 				.Any(a => a.Trait.IsActive);