Add support for playing an InsufficientFunds warning

OpenRA.Mods.Common/Traits/Player/InsufficientFundsWarning.cs

@@ -0,0 +1,53 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Provides the player with an audible warning when they run out of money while producing.")]
+	public class InsufficientFundsWarningInfo : ITraitInfo, Requires<PlayerResourcesInfo>
+	{
+		[Desc("The speech to play for the warning.")]
+		public readonly string Notification = "InsufficientFunds";
+
+		public object Create(ActorInitializer init) { return new InsufficientFundsWarning(this); }
+	}
+
+	public class InsufficientFundsWarning : INotifyInsufficientFunds
+	{
+		readonly InsufficientFundsWarningInfo info;
+
+		bool played;
+
+		public InsufficientFundsWarning(InsufficientFundsWarningInfo info)
+		{
+			this.info = info;
+		}
+
+		void INotifyInsufficientFunds.InsufficientFunds(Actor self)
+		{
+			Game.RunAfterTick(() =>
+			{
+				if (played)
+					return;
+
+				played = true;
+				var owner = self.Owner;
+				Game.Sound.PlayNotification(self.World.Map.Rules, owner, "Speech", info.Notification, owner.Faction.InternalName);
+			});
+		}
+
+		void INotifyInsufficientFunds.SufficientFunds(Actor self)
+		{
+			played = false;
+		}
+	}
+}