Add ore capping to MissionUtils. Add world.CreateActor extension in MissionUtils.

OpenRA.Mods.RA/Missions/Allies04Script.cs

@@ -167,7 +167,7 @@ namespace OpenRA.Mods.RA.Missions
 			foreach (var patrol in patrols)
 				patrol.DoPatrol();
 
-			ManageSovietOre();
+			MissionUtils.CapOre(soviets);
 
 			BaseGuardTick();
 
@@ -218,13 +218,6 @@ namespace OpenRA.Mods.RA.Missions
 			MissionFailed("The Soviet research laboratory was not secured in time.");
 		}
 
-		void ManageSovietOre()
-		{
-			var res = soviets.PlayerActor.Trait<PlayerResources>();
-			if (res.Ore > res.OreCapacity * 0.8)
-				res.TakeOre(res.OreCapacity / 10);
-		}
-
 		void BaseGuardTick()
 		{
 			if (baseGuardTicks <= 0 || baseGuard.IsDead() || !baseGuard.IsInWorld) return;