#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

namespace OpenRA.FileFormats
{
	public struct TileReference
	{
		public ushort tile;
		public byte image;
		public byte overlay;
		public byte smudge;
		public byte density;	/* used for ore/gems */

		public override int GetHashCode() { return tile.GetHashCode() ^ image.GetHashCode(); }

		public override bool Equals( object obj )
		{
			if( obj == null )
				return false;

			TileReference r = (TileReference)obj;
			return ( r.image == image && r.tile == tile );
		}

		public static bool operator ==( TileReference a, TileReference b ) { return a.Equals( b ); }
		public static bool operator !=( TileReference a, TileReference b ) { return !a.Equals( b ); }
	}
}