RMB to cancel orders

OpenRa.Game/Controller.cs

@@ -27,6 +27,9 @@ namespace OpenRa.Game
                     orderGenerator.Order(game, new int2((int)xy.X, (int)xy.Y)).Apply(game);
                 // todo: route all orders through netcode
             }
+
+            if (mi.Button == MouseButtons.Right && mi.Event == MouseInputEvent.Down)
+                orderGenerator = null;
 		}
 	}
 }

OpenRa.Game/Game.cs

@@ -67,7 +67,7 @@ namespace OpenRa.Game
 			var stuffFromOtherPlayers = network.Tick();	// todo: actually use the orders!
 			world.Update();
 
-			viewport.DrawRegions(this);
+			viewport.DrawRegions();
 		}
 	}
 }

OpenRa.Game/Graphics/Viewport.cs

@@ -33,7 +33,7 @@ namespace OpenRa.Game.Graphics
 
 		public void AddRegion(Region r) { regions.Add(r); }
 
-		public void DrawRegions(Game game)
+		public void DrawRegions()
 		{
 			float2 r1 = new float2(2, -2) / Size;
 			float2 r2 = new float2(-1, 1);