/* -*- C++ -*-
 * Copyright ©2005 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

typedef enum { WEST, NORTH, EAST, SOUTH } _Direction;

class Direction
{
public:
	Direction() : _d(NORTH) { }
	Direction(int d) : _d(_Direction(d)) { }
	Direction(const Direction& d) : _d(d._d) { }
	Direction(const _Direction& d) : _d(d) { }
	// Default operator=
	// Default destructor
	// Default operator==

	Direction& operator++()
	{
		_d = _Direction((int(_d)+1) % 4);
		return *this;
	}

	operator int() const { return int(_d); }

private:
	_Direction _d;
};