cnc: Fix "Silos Needed" alert

OpenRa.Game/OpenRa.Game.csproj

@@ -266,6 +266,7 @@
     <Compile Include="WorldUtils.cs" />
     <Compile Include="Traits\Wall.cs" />
     <Compile Include="Traits\Render\RenderBuildingWall.cs" />
+    <Compile Include="Traits\Player\EvaAlerts.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRa.FileFormats\OpenRa.FileFormats.csproj">

OpenRa.Game/Player.cs

@@ -107,7 +107,7 @@ namespace OpenRa
 
 			if (PowerProvided - PowerDrained < 0)
 				if (PowerProvided - PowerDrained  != oldBalance)
-					GiveAdvice("lopower1.aud");
+					GiveAdvice(PlayerActor.Info.Traits.Get<EvaAlertsInfo>().LowPower);
 		}
 				
 		public float GetSiloFullness()
@@ -146,7 +146,7 @@ namespace OpenRa
 				Ore = OreCapacity;		// trim off the overflow.
 
 			if (Ore > .8 * OreCapacity)
-				GiveAdvice("silond1.aud");		// silos needed
+				GiveAdvice(PlayerActor.Info.Traits.Get<EvaAlertsInfo>().SilosNeeded);		// silos needed
 		}
 
 		public bool TakeCash( int num )

mods/cnc/system.yaml

@@ -8,6 +8,9 @@ Player:
 		OnHoldAudio: onhold1.aud
 		CancelledAudio: cancel1.aud
 		ClickAudio: button.aud
+	EvaAlerts:
+		LowPower: lopower1.aud
+		SilosNeeded: silos1.aud
 	PlaceBuilding:
 	SpawnDefaultUnits:
 	

mods/ra/rules.yaml

@@ -1,5 +1,6 @@
 Player:
 	ProductionQueue:
+	EvaAlerts:
 	PlaceBuilding:
 	GpsPower:
 		Image: gpssicon