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Location: cpp/openttd-patchpack/source/src/cargopacket.h - annotation
r16729:482bfc615285
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(svn r21472) -Fix [FS#4298] (r21459-ish): make sure the query window is only opened once per parent window / callback.
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/*
* 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 cargopacket.h Base class for cargo packets. */
#ifndef CARGOPACKET_H
#define CARGOPACKET_H
#include "core/pool_type.hpp"
#include "economy_type.h"
#include "station_type.h"
#include "cargo_type.h"
#include "vehicle_type.h"
#include <list>
/** Unique identifier for a single cargo packet. */
typedef uint32 CargoPacketID;
struct CargoPacket;
/** Type of the pool for cargo packets for a little over 16 million packets. */
typedef Pool<CargoPacket, CargoPacketID, 1024, 0xFFF000, true, false> CargoPacketPool;
/** The actual pool with cargo packets */
extern CargoPacketPool _cargopacket_pool;
template <class Tinst> class CargoList;
extern const struct SaveLoad *GetCargoPacketDesc();
/**
* Container for cargo from the same location and time
*/
struct CargoPacket : CargoPacketPool::PoolItem<&_cargopacket_pool> {
private:
Money feeder_share; ///< Value of feeder pickup to be paid for on delivery of cargo
uint16 count; ///< The amount of cargo in this packet
byte days_in_transit; ///< Amount of days this packet has been in transit
SourceTypeByte source_type; ///< Type of \c source_id
SourceID source_id; ///< Index of source, INVALID_SOURCE if unknown/invalid
StationID source; ///< The station where the cargo came from first
TileIndex source_xy; ///< The origin of the cargo (first station in feeder chain)
TileIndex loaded_at_xy; ///< Location where this cargo has been loaded into the vehicle
/** The CargoList caches, thus needs to know about it. */
template <class Tinst> friend class CargoList;
friend class VehicleCargoList;
friend class StationCargoList;
/** We want this to be saved, right? */
friend const struct SaveLoad *GetCargoPacketDesc();
public:
/** Maximum number of items in a single cargo packet. */
static const uint16 MAX_COUNT = UINT16_MAX;
/**
* Create a new packet for savegame loading.
*/
CargoPacket();
/**
* Creates a new cargo packet
* @param source the source station of the packet
* @param source_xy the source location of the packet
* @param count the number of cargo entities to put in this packet
* @param source_type the 'type' of source the packet comes from (for subsidies)
* @param source_id the actual source of the packet (for subsidies)
* @pre count != 0
*/
CargoPacket(StationID source, TileIndex source_xy, uint16 count, SourceType source_type, SourceID source_id);
/**
* Creates a new cargo packet. Initializes the fields that cannot be changed later.
* Used when loading or splitting packets.
* @param count the number of cargo entities to put in this packet
* @param days_in_transit number of days the cargo has been in transit
* @param source the station the cargo was initially loaded
* @param source_xy the station location the cargo was initially loaded
* @param loaded_at_xy the location the cargo was loaded last
* @param feeder_share feeder share the packet has already accumulated
* @param source_type the 'type' of source the packet comes from (for subsidies)
* @param source_id the actual source of the packet (for subsidies)
*/
CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share = 0, SourceType source_type = ST_INDUSTRY, SourceID source_id = INVALID_SOURCE);
/** Destroy the packet */
~CargoPacket() { }
/**
* Gets the number of 'items' in this packet.
* @return the item count
*/
FORCEINLINE uint16 Count() const
{
return this->count;
}
/**
* Gets the amount of money already paid to earlier vehicles in
* the feeder chain.
* @return the feeder share
*/
FORCEINLINE Money FeederShare() const
{
return this->feeder_share;
}
/**
* Gets the number of days this cargo has been in transit.
* This number isn't really in days, but in 2.5 days (185 ticks) and
* it is capped at 255.
* @return the length this cargo has been in transit
*/
FORCEINLINE byte DaysInTransit() const
{
return this->days_in_transit;
}
/**
* Gets the type of the cargo's source. industry, town or head quarter
* @return the source type
*/
FORCEINLINE SourceType SourceSubsidyType() const
{
return this->source_type;
}
/**
* Gets the ID of the cargo's source. An IndustryID, TownID or CompanyID
* @return the source ID
*/
FORCEINLINE SourceID SourceSubsidyID() const
{
return this->source_id;
}
/**
* Gets the ID of the station where the cargo was loaded for the first time
* @return the StationID
*/
FORCEINLINE SourceID SourceStation() const
{
return this->source;
}
/**
* Gets the coordinates of the cargo's source station
* @return the source station's coordinates
*/
FORCEINLINE TileIndex SourceStationXY() const
{
return this->source_xy;
}
/**
* Gets the coordinates of the cargo's last loading station
* @return the last loading station's coordinates
*/
FORCEINLINE TileIndex LoadedAtXY() const
{
return this->loaded_at_xy;
}
static void InvalidateAllFrom(SourceType src_type, SourceID src);
static void InvalidateAllFrom(StationID sid);
static void AfterLoad();
};
/**
* Iterate over all _valid_ cargo packets from the given start
* @param var the variable used as "iterator"
* @param start the cargo packet ID of the first packet to iterate over
*/
#define FOR_ALL_CARGOPACKETS_FROM(var, start) FOR_ALL_ITEMS_FROM(CargoPacket, cargopacket_index, var, start)
/**
* Iterate over all _valid_ cargo packets from the begin of the pool
* @param var the variable used as "iterator"
*/
#define FOR_ALL_CARGOPACKETS(var) FOR_ALL_CARGOPACKETS_FROM(var, 0)
/**
* Simple collection class for a list of cargo packets
* @tparam Tinst The actual instantation of this cargo list
*/
template <class Tinst>
class CargoList {
public:
/** Container with cargo packets */
typedef std::list<CargoPacket *> List;
/** The iterator for our container */
typedef List::iterator Iterator;
/** The const iterator for our container */
typedef List::const_iterator ConstIterator;
/** Kind of actions that could be done with packets on move */
enum MoveToAction {
MTA_FINAL_DELIVERY, ///< "Deliver" the packet to the final destination, i.e. destroy the packet
MTA_CARGO_LOAD, ///< Load the packet onto a vehicle, i.e. set the last loaded station ID
MTA_TRANSFER, ///< The cargo is moved as part of a transfer
MTA_UNLOAD, ///< The cargo is moved as part of a forced unload
};
protected:
uint count; ///< Cache for the number of cargo entities
uint cargo_days_in_transit; ///< Cache for the sum of number of days in transit of each entity; comparable to man-hours
List packets; ///< The cargo packets in this list
/**
* Update the cache to reflect adding of this packet.
* Increases count and days_in_transit
* @param cp a new packet to be inserted
*/
void AddToCache(const CargoPacket *cp);
/**
* Update the cached values to reflect the removal of this packet.
* Decreases count and days_in_transit
* @param cp Packet to be removed from cache
*/
void RemoveFromCache(const CargoPacket *cp);
public:
/** Create the cargo list */
CargoList() {}
/** And destroy it ("frees" all cargo packets) */
~CargoList();
/**
* Returns a pointer to the cargo packet list (so you can iterate over it etc).
* @return pointer to the packet list
*/
FORCEINLINE const List *Packets() const
{
return &this->packets;
}
/**
* Checks whether this list is empty
* @return true if and only if the list is empty
*/
FORCEINLINE bool Empty() const
{
return this->count == 0;
}
/**
* Returns the number of cargo entities in this list
* @return the before mentioned number
*/
FORCEINLINE uint Count() const
{
return this->count;
}
/**
* Returns source of the first cargo packet in this list
* @return the before mentioned source
*/
FORCEINLINE StationID Source() const
{
return this->Empty() ? INVALID_STATION : this->packets.front()->source;
}
/**
* Returns average number of days in transit for a cargo entity
* @return the before mentioned number
*/
FORCEINLINE uint DaysInTransit() const
{
return this->count == 0 ? 0 : this->cargo_days_in_transit / this->count;
}
/**
* Appends the given cargo packet
* @warning After appending this packet may not exist anymore!
* @note Do not use the cargo packet anymore after it has been appended to this CargoList!
* @param cp the cargo packet to add
* @pre cp != NULL
*/
void Append(CargoPacket *cp);
/**
* Truncates the cargo in this list to the given amount. It leaves the
* first count cargo entities and removes the rest.
* @param max_remaining the maximum amount of entities to be in the list after the command
*/
void Truncate(uint max_remaining);
/**
* Moves the given amount of cargo to another list.
* Depending on the value of mta the side effects of this function differ:
* - MTA_FINAL_DELIVERY: destroys the packets that do not originate from a specific station
* - MTA_CARGO_LOAD: sets the loaded_at_xy value of the moved packets
* - MTA_TRANSFER: just move without side effects
* - MTA_UNLOAD: just move without side effects
* @param dest the destination to move the cargo to
* @param count the amount of cargo entities to move
* @param mta how to handle the moving (side effects)
* @param data Depending on mta the data of this variable differs:
* - MTA_FINAL_DELIVERY - station ID of packet's origin not to remove
* - MTA_CARGO_LOAD - station's tile index of load
* - MTA_TRANSFER - unused
* - MTA_UNLOAD - unused
* @param payment The payment helper
*
* @pre mta == MTA_FINAL_DELIVERY || dest != NULL
* @pre mta == MTA_UNLOAD || mta == MTA_CARGO_LOAD || payment != NULL
* @return true if there are still packets that might be moved from this cargo list
*/
template <class Tother_inst>
bool MoveTo(Tother_inst *dest, uint count, MoveToAction mta, CargoPayment *payment, uint data = 0);
/** Invalidates the cached data and rebuild it */
void InvalidateCache();
};
/**
* CargoList that is used for vehicles.
*/
class VehicleCargoList : public CargoList<VehicleCargoList> {
protected:
/** The (direct) parent of this class */
typedef CargoList<VehicleCargoList> Parent;
Money feeder_share; ///< Cache for the feeder share
/**
* Update the cache to reflect adding of this packet.
* Increases count, feeder share and days_in_transit
* @param cp a new packet to be inserted
*/
void AddToCache(const CargoPacket *cp);
/**
* Update the cached values to reflect the removal of this packet.
* Decreases count, feeder share and days_in_transit
* @param cp Packet to be removed from cache
*/
void RemoveFromCache(const CargoPacket *cp);
public:
/** The super class ought to know what it's doing */
friend class CargoList<VehicleCargoList>;
/** The vehicles have a cargo list (and we want that saved). */
friend const struct SaveLoad *GetVehicleDescription(VehicleType vt);
/**
* Returns total sum of the feeder share for all packets
* @return the before mentioned number
*/
FORCEINLINE Money FeederShare() const
{
return this->feeder_share;
}
/**
* Ages the all cargo in this list
*/
void AgeCargo();
/** Invalidates the cached data and rebuild it */
void InvalidateCache();
/**
* Are two the two CargoPackets mergeable in the context of
* a list of CargoPackets for a Vehicle?
* @param cp1 the first CargoPacket
* @param cp2 the second CargoPacket
* @return true if they are mergeable
*/
static bool AreMergable(const CargoPacket *cp1, const CargoPacket *cp2)
{
return cp1->source_xy == cp2->source_xy &&
cp1->days_in_transit == cp2->days_in_transit &&
cp1->source_type == cp2->source_type &&
cp1->source_id == cp2->source_id &&
cp1->loaded_at_xy == cp2->loaded_at_xy;
}
};
/**
* CargoList that is used for stations.
*/
class StationCargoList : public CargoList<StationCargoList> {
public:
/** The super class ought to know what it's doing */
friend class CargoList<StationCargoList>;
/** The stations, via GoodsEntry, have a CargoList. */
friend const struct SaveLoad *GetGoodsDesc();
/**
* Are two the two CargoPackets mergeable in the context of
* a list of CargoPackets for a Vehicle?
* @param cp1 the first CargoPacket
* @param cp2 the second CargoPacket
* @return true if they are mergeable
*/
static bool AreMergable(const CargoPacket *cp1, const CargoPacket *cp2)
{
return cp1->source_xy == cp2->source_xy &&
cp1->days_in_transit == cp2->days_in_transit &&
cp1->source_type == cp2->source_type &&
cp1->source_id == cp2->source_id;
}
};
#endif /* CARGOPACKET_H */
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