#region Copyright & License Information
/*
 * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
 * This file is part of OpenRA.
 * 
 *  OpenRA is free software: you can redistribute it and/or modify
 *  it 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.
 * 
 *  OpenRA is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Collections.Generic;
using System.Linq;
using OpenRA.Traits;

namespace OpenRA.Effects
{
	public class FlashTarget : IEffect
	{
		Actor target;
		int remainingTicks = 4;

		public FlashTarget(Actor target)
		{
			this.target = target;
			foreach (var e in target.World.Effects.OfType<FlashTarget>().Where(a => a.target == target).ToArray())
				target.World.Remove(e);
		}

		public void Tick( World world )
		{
			if (--remainingTicks == 0)
				world.AddFrameEndTask(w => w.Remove(this));
		}

		public IEnumerable<Renderable> Render()
		{
			if (remainingTicks % 2 == 0)
				foreach (var r in target.Render())
					yield return r.WithPalette("highlight");
		}
	}
}