Merge pull request #10112 from DnAp/PowerTooltip

Closes #6011

OpenRA.Mods.Common/OpenRA.Mods.Common.csproj

@@ -297,6 +297,7 @@
     <Compile Include="Traits\Burns.cs" />
     <Compile Include="Traits\C4Demolition.cs" />
     <Compile Include="Traits\Health.cs" />
+    <Compile Include="Traits\PowerTooltip.cs" />
     <Compile Include="Traits\VeteranProductionIconOverlay.cs" />
     <Compile Include="Traits\Capturable.cs" />
     <Compile Include="Traits\CaptureNotification.cs" />

OpenRA.Mods.Common/Traits/PowerTooltip.cs

@@ -0,0 +1,53 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 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("Shown power info on the build palette widget.")]
+	public class PowerTooltipInfo : ITraitInfo
+	{
+		public object Create(ActorInitializer init) { return new PowerTooltip(init.Self); }
+	}
+
+	public class PowerTooltip : IProvideTooltipInfo, INotifyOwnerChanged
+	{
+		readonly Actor self;
+		PowerManager powerManager;
+		DeveloperMode developerMode;
+
+		public PowerTooltip(Actor self)
+		{
+			this.self = self;
+			powerManager = self.Owner.PlayerActor.Trait<PowerManager>();
+			developerMode = self.Owner.PlayerActor.Trait<DeveloperMode>();
+		}
+
+		public bool IsTooltipVisible(Player forPlayer)
+		{
+			return forPlayer == self.Owner;
+		}
+
+		public string TooltipText
+		{
+			get
+			{
+				return "Power Usage: {0}{1}".F(powerManager.PowerDrained, developerMode.UnlimitedPower ? "" : "/" + powerManager.PowerProvided);
+			}
+		}
+
+		public void OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
+		{
+			powerManager = newOwner.PlayerActor.Trait<PowerManager>();
+			developerMode = newOwner.PlayerActor.Trait<DeveloperMode>();
+		}
+	}
+}