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Location: cpp/openttd-patchpack/source/src/cargopacket.h - annotation
r10214:51bc41889761
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(svn r14436) -Fix [FS#1793]: (fast) trains would sometimes move one time too often/little when moving from diagonal<->non-diagonal tracks (iguannab)
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/** @file cargopacket.h Base class for cargo packets. */
#ifndef CARGOPACKET_H
#define CARGOPACKET_H
#include "oldpool.h"
#include "economy_type.h"
#include "tile_type.h"
#include "station_type.h"
#include <list>
typedef uint32 CargoPacketID;
struct CargoPacket;
/** We want to use a pool */
DECLARE_OLD_POOL(CargoPacket, CargoPacket, 10, 1000)
/**
* Container for cargo from the same location and time
*/
struct CargoPacket : PoolItem<CargoPacket, CargoPacketID, &_CargoPacket_pool> {
Money feeder_share; ///< Value of feeder pickup to be paid for on delivery of cargo
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
StationID source; ///< The station where the cargo came from first
uint16 count; ///< The amount of cargo in this packet
byte days_in_transit; ///< Amount of days this packet has been in transit
bool paid_for; ///< Have we been paid for this cargo packet?
/**
* Creates a new cargo packet
* @param source the source of the packet
* @param count the number of cargo entities to put in this packet
* @pre count != 0 || source == INVALID_STATION
*/
CargoPacket(StationID source = INVALID_STATION, uint16 count = 0);
/** Destroy the packet */
virtual ~CargoPacket();
/**
* Is this a valid cargo packet ?
* @return true if and only it is valid
*/
inline bool IsValid() const { return this->count != 0; }
/**
* Checks whether the cargo packet is from (exactly) the same source
* in time and location.
* @param cp the cargo packet to compare to
* @return true if and only if days_in_transit and source_xy are equal
*/
bool SameSource(const CargoPacket *cp) const;
};
/**
* Iterate over all _valid_ cargo packets from the given start
* @param cp the variable used as "iterator"
* @param start the cargo packet ID of the first packet to iterate over
*/
#define FOR_ALL_CARGOPACKETS_FROM(cp, start) for (cp = GetCargoPacket(start); cp != NULL; cp = (cp->index + 1U < GetCargoPacketPoolSize()) ? GetCargoPacket(cp->index + 1U) : NULL) if (cp->IsValid())
/**
* Iterate over all _valid_ cargo packets from the begin of the pool
* @param cp the variable used as "iterator"
*/
#define FOR_ALL_CARGOPACKETS(cp) FOR_ALL_CARGOPACKETS_FROM(cp, 0)
extern void SaveLoad_STNS(Station *st);
/**
* Simple collection class for a list of cargo packets
*/
class CargoList {
public:
/** List of cargo packets */
typedef std::list<CargoPacket *> List;
/** 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_OTHER ///< "Just" move the packet to another cargo list
};
private:
List packets; ///< The cargo packets in this list
bool empty; ///< Cache for whether this list is empty or not
uint count; ///< Cache for the number of cargo entities
bool unpaid_cargo; ///< Cache for the unpaid cargo
Money feeder_share; ///< Cache for the feeder share
StationID source; ///< Cache for the source of the packet
uint days_in_transit; ///< Cache for the number of days in transit
public:
friend void SaveLoad_STNS(Station *st);
/** Create the cargo list */
CargoList() { this->InvalidateCache(); }
/** 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
*/
const CargoList::List *Packets() const;
/**
* Ages the all cargo in this list
*/
void AgeCargo();
/**
* Checks whether this list is empty
* @return true if and only if the list is empty
*/
bool Empty() const;
/**
* Returns the number of cargo entities in this list
* @return the before mentioned number
*/
uint Count() const;
/**
* Is there some cargo that has not been paid for?
* @return true if and only if there is such a cargo
*/
bool UnpaidCargo() const;
/**
* Returns total sum of the feeder share for all packets
* @return the before mentioned number
*/
Money FeederShare() const;
/**
* Returns source of the first cargo packet in this list
* @return the before mentioned source
*/
StationID Source() const;
/**
* Returns average number of days in transit for a cargo entity
* @return the before mentioned number
*/
uint DaysInTransit() const;
/**
* 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 count the maximum amount of entities to be in the list after the command
*/
void Truncate(uint count);
/**
* 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_OTHER: 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_OTHER - unused
* @param mta == MTA_FINAL_DELIVERY || dest != NULL
* @return true if there are still packets that might be moved from this cargo list
*/
bool MoveTo(CargoList *dest, uint count, CargoList::MoveToAction mta = MTA_OTHER, uint data = 0);
/** Invalidates the cached data and rebuild it */
void InvalidateCache();
};
#endif /* CARGOPACKET_H */
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