supporting cheap queues

OpenRa.Game/Chrome.cs

@@ -175,6 +175,7 @@ namespace OpenRa.Game
 			var queue = Game.LocalPlayer.PlayerActor.traits.Get<Traits.ProductionQueue>();
 			var item = queue.Producing( groupName );
 			if (item != null)
+				for( var n = 0; n <= item.Repeats; n++ )
 					Game.controller.AddOrder(Order.CancelProduction(Game.LocalPlayer, item.Item));
 		}
 
@@ -294,6 +295,13 @@ namespace OpenRa.Game
 						ready.Play("hold");
 						overlayBits.Add(Pair.New(ready.Image, overlayPos));
 					}
+
+					if (currentItem.Repeats > 0)
+					{
+						ready.PlayFetchIndex("groups", () => currentItem.Repeats + 1);
+						ready.Tick();
+						overlayBits.Add(Pair.New(ready.Image, overlayPos));
+					}
 				}
 
 				var closureItem = item;
@@ -349,7 +357,7 @@ namespace OpenRa.Game
 				if (producing == null)
 				{
 					Game.controller.AddOrder(Order.StartProduction(player, item));
-					Sound.Play("abldgin1.aud");
+					Sound.Play((group == "Building" || group == "Defense") ? "abldgin1.aud" : "train1.aud");
 				}
 				else if (producing.Item == item)
 				{
@@ -358,8 +366,13 @@ namespace OpenRa.Game
 						if (group == "Building" || group == "Defense")
 							Game.controller.orderGenerator = new PlaceBuilding(player.PlayerActor, item);
 					}
-					else
+					else if (producing.Paused)
 						Game.controller.AddOrder(Order.PauseProduction(player, item, false));
+					else
+					{
+						Sound.Play((group == "Building" || group == "Defense") ? "abldgin1.aud" : "train1.aud");
+						Game.controller.AddOrder(Order.StartProduction(player, item));
+					}
 				}
 				else
 				{

OpenRa.Game/ProductionItem.cs

@@ -11,6 +11,8 @@ namespace OpenRa.Game
 		public int RemainingTime { get; private set; }
 		public int RemainingCost { get; private set; }
 
+		public int Repeats;
+
 		public bool Paused = false, Done = false;
 		public Action OnComplete;
 
@@ -24,6 +26,14 @@ namespace OpenRa.Game
 			OnComplete = onComplete;
 		}
 
+		public void DoRepeat()
+		{
+			RemainingTime = TotalTime;
+			RemainingCost = TotalCost;
+			Done = false;
+			--Repeats;
+		}
+
 		public void Tick(Player player)
 		{
 			if (Done)

OpenRa.Game/Traits/ProductionQueue.cs

@@ -99,18 +99,33 @@ namespace OpenRa.Game.Traits
 		{
 			var item = production[ category ];
 			if( item == null ) return;
-			self.Owner.GiveCash( item.TotalCost - item.RemainingCost ); // refund what's been paid so far.
-			FinishProduction( category );
+			if (item.Repeats > 0)
+				--item.Repeats;
+			else
+			{
+				self.Owner.GiveCash(item.TotalCost - item.RemainingCost); // refund what's been paid so far.
+				FinishProduction(category);
+			}
 		}
 
 		public void FinishProduction( string category )
 		{
-			production[ category ] = null;
+			var item = production[category];
+			if (item == null) return;
+			if (item.Repeats > 0)
+				item.DoRepeat();
+			else
+				production[category] = null;
 		}
 
 		public void BeginProduction( string group, ProductionItem item )
 		{
-			if( production[ group ] != null ) return;
+			if (production[group] != null)
+			{
+				if (production[group].Item == item.Item)
+					++production[group].Repeats;
+				return;
+			}
 			production[ group ] = item;
 		}