another improvement. it runs, too!

OpenRa.Game/Game Code.cd

@@ -13,6 +13,7 @@
     <ShowAsAssociation>
       <Field Name="controller" />
       <Field Name="viewport" />
+      <Field Name="world" />
     </ShowAsAssociation>
   </Class>
   <Class Name="OpenRa.Game.Controller">
@@ -20,6 +21,7 @@
     <Members>
       <Field Name="dragEnd" Hidden="true" />
       <Field Name="dragStart" Hidden="true" />
+      <Field Name="game" Hidden="true" />
     </Members>
     <TypeIdentifier>
       <HashCode>AAAAAAAIAAAAAAAAAAACAgAAABAAAAAIAAAAAIAAAAA=</HashCode>
@@ -36,5 +38,22 @@
       <FileName>Graphics\Viewport.cs</FileName>
     </TypeIdentifier>
   </Class>
+  <Class Name="OpenRa.Game.World">
+    <Position X="8.5" Y="5.5" Width="1.5" />
+    <Members>
+      <Field Name="actors" Hidden="true" />
+      <Field Name="frameEndActions" Hidden="true" />
+      <Field Name="game" Hidden="true" />
+      <Field Name="lastTime" Hidden="true" />
+      <Field Name="timestep" Hidden="true" />
+    </Members>
+    <TypeIdentifier>
+      <HashCode>AAYAACABABAAgAAAAIAABgAAAAAAAAAIAAAAAAAAAAA=</HashCode>
+      <FileName>World.cs</FileName>
+    </TypeIdentifier>
+    <ShowAsAssociation>
+      <Field Name="game" />
+    </ShowAsAssociation>
+  </Class>
   <Font Name="Segoe UI" Size="9" />
 </ClassDiagram>

OpenRa.Game/Graphics/WorldRenderer.cs

@@ -14,8 +14,8 @@ namespace OpenRa.Game.Graphics
 
 		public WorldRenderer(Renderer renderer, Game game)
 		{
-			// TODO: this is layout policy. it belongs at a higher level than this.
-
+			// TODO: this is layout policy. it belongs at a higher level than this.
+			this.game = game;
 			region = Region.Create(game.viewport, DockStyle.Left,
 				game.viewport.Width - 128, Draw, 
                 game.controller.HandleMouseInput);		

OpenRa.Game/World.cs

@@ -9,8 +9,9 @@ namespace OpenRa.Game
 	{
 		List<Actor> actors = new List<Actor>();
 		List<Action<World>> frameEndActions = new List<Action<World>>();
-
-		public readonly Game game;
+		readonly Game game;
+		int lastTime = Environment.TickCount;
+		const int timestep = 40;
 
 		public World(Game game) { this.game = game; }
 
@@ -18,10 +19,6 @@ namespace OpenRa.Game
 		public void Remove( Actor a ) { actors.Remove( a ); }
 		public void AddFrameEndTask( Action<World> a ) { frameEndActions.Add( a ); }
 
-		int lastTime = Environment.TickCount;
-
-		const int timestep = 40;
-
 		public void Update()
 		{
 			int t = Environment.TickCount;