Make the mute hotkey global.

OpenRA.Mods.Common/Widgets/Logic/MuteHotkeyLogic.cs

@@ -0,0 +1,44 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Drawing;
+using OpenRA.Mods.Common.Lint;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets.Logic
+{
+	[ChromeLogicArgsHotkeys("MuteAudioKey")]
+	public class MuteHotkeyLogic : SingleHotkeyBaseLogic
+	{
+		[ObjectCreator.UseCtor]
+		public MuteHotkeyLogic(Widget widget, Dictionary<string, MiniYaml> logicArgs)
+			: base(widget, "MuteAudioKey", "GLOBAL_KEYHANDLER", logicArgs) { }
+
+		protected override bool OnHotkeyActivated(KeyInput e)
+		{
+			Game.Settings.Sound.Mute ^= true;
+
+			if (Game.Settings.Sound.Mute)
+			{
+				Game.Sound.MuteAudio();
+				Game.AddChatLine(Color.White, "Battlefield Control", "Audio muted");
+			}
+			else
+			{
+				Game.Sound.UnmuteAudio();
+				Game.AddChatLine(Color.White, "Battlefield Control", "Audio unmuted");
+			}
+
+			return true;
+		}
+	}
+}