#region Copyright & License Information
/*
 * Copyright 2007-2011 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

namespace OpenRA.Traits
{
	public class RevealsShroudInfo : ITraitInfo
	{
		public readonly int Range = 0;
		public object Create(ActorInitializer init) { return new RevealsShroud(this); }
	}

	public class RevealsShroud : ITick
	{
		RevealsShroudInfo Info;
		CPos previousLocation;

		public RevealsShroud(RevealsShroudInfo info)
		{
			Info = info;
		}

		public void Tick(Actor self)
		{
			// todo: don't tick all the time.
			World w = self.World;
			if(self.Owner == null) return;
			
			if (previousLocation != self.Location)
			{
				previousLocation = self.Location;
				var actors = w.ActorsWithTrait<Shroud>();

				foreach( var s in actors )
					s.Actor.Owner.Shroud.RemoveActor(self);
					
				self.UpdateSight();
					
				foreach( var s in actors )
					s.Actor.Owner.Shroud.AddActor(self);
				
			}
		}

		public int RevealRange { get { return Info.Range; } }
	}
}