#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

using OpenRA.Traits;

namespace OpenRA.Mods.RA.Air
{
	class HeliLand : Activity
	{
		public HeliLand(bool requireSpace, int minimalAltitude)
		{
			this.requireSpace = requireSpace;
			this.minimalAltitude = minimalAltitude;
		}

		bool requireSpace;
		int minimalAltitude = 0;

		public override Activity Tick(Actor self)
		{
			if (IsCanceled) return NextActivity;
			var aircraft = self.Trait<Aircraft>();
			if (aircraft.Altitude == minimalAltitude)
				return NextActivity;

			if (requireSpace && !aircraft.CanLand(self.Location))
				return this;

			--aircraft.Altitude;
			return this;
		}
	}
}