Wrap up Render traits move

OpenRA.Mods.Common/Traits/Render/WithActiveAnimation.cs

@@ -0,0 +1,72 @@
+#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 System.Collections.Generic;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Replaces the idle animation of a building.")]
+	public class WithActiveAnimationInfo : ITraitInfo, Requires<RenderBuildingInfo>
+	{
+		[Desc("Sequence name to use")]
+		public readonly string Sequence = "active";
+
+		public readonly int Interval = 750;
+
+		public readonly bool PauseOnLowPower = false;
+
+		public object Create(ActorInitializer init) { return new WithActiveAnimation(init.Self, this); }
+	}
+
+	public class WithActiveAnimation : ITick, INotifyBuildComplete, INotifySold
+	{
+		readonly IEnumerable<IDisable> disabled;
+		readonly WithActiveAnimationInfo info;
+		readonly RenderBuilding renderBuilding;
+
+		public WithActiveAnimation(Actor self, WithActiveAnimationInfo info)
+		{
+			disabled = self.TraitsImplementing<IDisable>();
+			renderBuilding = self.Trait<RenderBuilding>();
+			this.info = info;
+		}
+
+		int ticks;
+		public void Tick(Actor self)
+		{
+			if (!buildComplete)
+				return;
+
+			if (--ticks <= 0)
+			{
+				if (!(info.PauseOnLowPower && disabled.Any(d => d.Disabled)))
+					renderBuilding.PlayCustomAnim(self, info.Sequence);
+				ticks = info.Interval;
+			}
+		}
+
+		bool buildComplete = false;
+
+		public void BuildingComplete(Actor self)
+		{
+			buildComplete = true;
+		}
+
+		public void Selling(Actor self)
+		{
+			buildComplete = false;
+		}
+
+		public void Sold(Actor self) { }
+	}
+}