added a new hotkey to cycle production buildings except conyards

OpenRA.Mods.RA/Widgets/WorldCommandWidget.cs

@@ -47,9 +47,13 @@ namespace OpenRA.Mods.RA.Widgets
 			{
 				var key = Hotkey.FromKeyInput(e);
 				var ks = Game.Settings.Keys;
+
 				if (key == ks.CycleBaseKey)
 					return CycleBases();
 
+				if (key == ks.CycleProductionBuildingsKey)
+					return CycleProductionBuildings();
+
 				if (key == ks.ToLastEventKey)
 					return ToLastEvent();
 
@@ -199,6 +203,29 @@ namespace OpenRA.Mods.RA.Widgets
 			return ToSelection();
 		}
 
+		bool CycleProductionBuildings()
+		{
+			var facilities = world.ActorsWithTrait<Production>()
+				.Where(a => a.Actor.Owner == world.LocalPlayer && !a.Actor.HasTrait<BaseBuilding>())
+				.ToArray();
+
+			if (!facilities.Any())
+				return true;
+
+			var next = facilities
+				.Select(b => b.Actor)
+				.SkipWhile(b => !world.Selection.Actors.Contains(b))
+				.Skip(1)
+				.FirstOrDefault();
+
+			if (next == null)
+				next = facilities.Select(b => b.Actor).First();
+
+			world.Selection.Combine(world, new Actor[] { next }, false, true);
+
+			return ToSelection();
+		}
+
 		bool ToLastEvent()
 		{
 			if (world.LocalPlayer == null)