CloakGenerator.cs

 #region Copyright & License Information
 /*
  * Copyright 2007-2014 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;
using System.Collections.Generic;
using System.Linq;
using System.Drawing;
using OpenRA.Traits;
using OpenRA.Graphics;
using OpenRA.Mods.Common.Graphics;
using OpenRA.Mods.RA;

namespace OpenRA.Mods.TS
{
	public class CloakGeneratorInfo : ITraitInfo
	{
		[Desc("Range, in cells, to cloak valid actor types.", "Default is 12.")]
		public readonly WRange CloakRange = WRange.FromCells(12);

		public readonly string[] CloakableTypes = { };
	}

	public class CloakGenerator : ITick, IPostRenderSelection
	{
		readonly Actor self;
		readonly CloakGeneratorInfo info;

		public CloakGenerator(Actor self, CloakGeneratorInfo info)
		{
			this.self = self;
			this.info = info;
		}

		public void Tick(Actor self)
		{
			var toCloak = self.World.FindActorsInCircle(self.CenterPosition, info.CloakRange)
				.Where(a =>
				{
					var cloak = a.Info.Traits.GetOrDefault<CloakInfo>();
					if (cloak == null)
						return false;

					return cloak.RequiresCloakGenerator && info.CloakableTypes.Intersect(cloak.CloakTypes).Any();
				});

			foreach (var cloaker in toCloak)
				cloaker.Trait<Cloak>().ForceCloak();
		}

		public IEnumerable<IRenderable> RenderAfterWorld(WorldRenderer wr)
		{
			if (self.Owner != self.World.LocalPlayer)
				yield break;

			yield return new RangeCircleRenderable
				(
					self.CenterPosition,
					info.CloakRange,
					0,
					Color.FromArgb(128, Color.LimeGreen),
					Color.FromArgb(96, Color.Black)
				);
		}
	}
}