Refactor CanPowerDown to provide a condition instead of triggering IsDisabled

OpenRA.Mods.Common/Effects/PowerdownIndicator.cs

@@ -1,52 +0,0 @@
-#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 OpenRA.Effects;
-using OpenRA.Graphics;
-using OpenRA.Mods.Common.Traits;
-
-namespace OpenRA.Mods.Common.Effects
-{
-	class PowerdownIndicator : IEffect, IEffectAboveShroud
-	{
-		readonly Actor a;
-		readonly Animation anim;
-		readonly CanPowerDown canPowerDown;
-
-		public PowerdownIndicator(Actor a)
-		{
-			this.a = a;
-			canPowerDown = a.Trait<CanPowerDown>();
-
-			anim = new Animation(a.World, canPowerDown.Info.IndicatorImage);
-			anim.PlayRepeating(canPowerDown.Info.IndicatorSequence);
-		}
-
-		void IEffect.Tick(World world)
-		{
-			if (!a.IsInWorld || a.IsDead || !canPowerDown.Disabled)
-				world.AddFrameEndTask(w => w.Remove(this));
-
-			anim.Tick();
-		}
-
-		IEnumerable<IRenderable> IEffect.Render(WorldRenderer wr) { return SpriteRenderable.None; }
-
-		IEnumerable<IRenderable> IEffectAboveShroud.RenderAboveShroud(WorldRenderer wr)
-		{
-			if (a.Disposed || wr.World.FogObscures(a))
-				return SpriteRenderable.None;
-
-			return anim.Render(a.CenterPosition, wr.Palette(canPowerDown.Info.IndicatorPalette));
-		}
-	}
-}