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Henry Wilson

Fix: trains cancelling their pending reversal when ordered to go to a depot behind them

Previously, if a train had been ordered to reverse, and while it was slowing down, was
ordered to travel to a depot that is behind it, the train would continue forwards.
Also when a train had been ordered to reverse, and while it was slowing down, was
ordered to travel to a depot that is in front of it, the train would not cancel the
reversal.
In both cases the train would travel away from the target depot.

Trains in this situation now behave correctly and will travel towards the depot.

/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file transport_type.h Base types related to transport. */

#ifndef TRANSPORT_TYPE_H
#define TRANSPORT_TYPE_H

#include "core/enum_type.hpp"

/** Type for the company global vehicle unit number. */
typedef uint16 UnitID;

/** Available types of transport */
enum TransportType {
	/* These constants are for now linked to the representation of bridges
	 * and tunnels, so they can be used by GetTileTrackStatus_TunnelBridge.
	 * In an ideal world, these constants would be used everywhere when
	 * accessing tunnels and bridges. For now, you should just not change
	 * the values for road and rail.
	 */
	TRANSPORT_BEGIN = 0, ///< Begin of the iterator.
	TRANSPORT_RAIL = TRANSPORT_BEGIN, ///< Transport by train
	TRANSPORT_ROAD,  ///< Transport by road vehicle
	TRANSPORT_WATER, ///< Transport over water
	TRANSPORT_AIR,   ///< Transport through air
	TRANSPORT_END,   ///< End of iterations.
	INVALID_TRANSPORT = 0xff, ///< Sentinel for invalid transport types.
};
/** Helper information for extract tool. */
template <> struct EnumPropsT<TransportType> : MakeEnumPropsT<TransportType, byte, TRANSPORT_BEGIN, TRANSPORT_END, INVALID_TRANSPORT, 2> {};

#endif /* TRANSPORT_TYPE_H */