cpp/openttd-patchpack/source Files · src/order_backup.h

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rubidium

(svn r26708) -Codechange: replace C preprocessor with all kinds of options to prevent adding certain things to the result and the sed script to remove everything that shouldn't be in the resulting nfo file but came out of the C preprocessor by a small-ish awk program. This means no more breaking if a C preprocessor decides to add more data to the processed file (like GCC's inclusion of stdc-predef.h when not passing -nostdinc). It furthermore more than halfs the time needed for the assemble step of the extra GRF compilation

/* $Id$ */

/*
 * 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 order_backup.h Functions related to order backups. */

#ifndef ORDER_BACKUP_H
#define ORDER_BACKUP_H

#include "core/pool_type.hpp"
#include "group_type.h"
#include "tile_type.h"
#include "vehicle_type.h"
#include "base_consist.h"

/** Unique identifier for an order backup. */
typedef uint8 OrderBackupID;
struct OrderBackup;

/** The pool type for order backups. */
typedef Pool<OrderBackup, OrderBackupID, 1, 256> OrderBackupPool;
/** The pool with order backups. */
extern OrderBackupPool _order_backup_pool;

/** Flag to pass to the vehicle construction command when an order should be preserved. */
static const uint32 MAKE_ORDER_BACKUP_FLAG = 1U << 31;

/**
 * Data for backing up an order of a vehicle so it can be
 * restored after a vehicle is rebuilt in the same depot.
 */
struct OrderBackup : OrderBackupPool::PoolItem<&_order_backup_pool>, BaseConsist {
private:
	friend const struct SaveLoad *GetOrderBackupDescription(); ///< Saving and loading of order backups.
	friend void Load_BKOR();   ///< Creating empty orders upon savegame loading.
	uint32 user;               ///< The user that requested the backup.
	TileIndex tile;            ///< Tile of the depot where the order was changed.
	GroupID group;             ///< The group the vehicle was part of.

	const Vehicle *clone;      ///< Vehicle this vehicle was a clone of.
	Order *orders;             ///< The actual orders if the vehicle was not a clone.

	/** Creation for savegame restoration. */
	OrderBackup() {}
	OrderBackup(const Vehicle *v, uint32 user);

	void DoRestore(Vehicle *v);

public:
	~OrderBackup();

	static void Backup(const Vehicle *v, uint32 user);
	static void Restore(Vehicle *v, uint32 user);

	static void ResetOfUser(TileIndex tile, uint32 user);
	static void ResetUser(uint32 user);
	static void Reset(TileIndex tile = INVALID_TILE, bool from_gui = true);

	static void ClearGroup(GroupID group);
	static void ClearVehicle(const Vehicle *v);
	static void RemoveOrder(OrderType type, DestinationID destination);
};

/**
 * Iterator over all order backups from a given ID.
 * @param var The variable to iterate with.
 * @param start The start of the iteration.
 */
#define FOR_ALL_ORDER_BACKUPS_FROM(var, start) FOR_ALL_ITEMS_FROM(OrderBackup, order_backup_index, var, start)

/**
 * Iterator over all order backups.
 * @param var The variable to iterate with.
 */
#define FOR_ALL_ORDER_BACKUPS(var) FOR_ALL_ORDER_BACKUPS_FROM(var, 0)

#endif /* ORDER_BACKUP_H */