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Location: cpp/openttd-patchpack/source/src/cargopacket.cpp - annotation
r20136:b59b9772e471
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(svn r25109) -Update from WebTranslator v3.0:
german - 1 changes by planetmaker
italian - 1 changes by lorenzodv
polish - 1 changes by xaxa
swedish - 3 changes by Joel_A
german - 1 changes by planetmaker
italian - 1 changes by lorenzodv
polish - 1 changes by xaxa
swedish - 3 changes by Joel_A
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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.cpp Implementation of the cargo packets. */
#include "stdafx.h"
#include "core/pool_func.hpp"
#include "economy_base.h"
#include "cargoaction.h"
#include "order_type.h"
/* Initialize the cargopacket-pool */
CargoPacketPool _cargopacket_pool("CargoPacket");
INSTANTIATE_POOL_METHODS(CargoPacket)
/**
* Create a new packet for savegame loading.
*/
CargoPacket::CargoPacket()
{
this->source_type = ST_INDUSTRY;
this->source_id = INVALID_SOURCE;
}
/**
* Creates a new cargo packet.
* @param source Source station of the packet.
* @param source_xy Source location of the packet.
* @param count Number of cargo entities to put in this packet.
* @param source_type 'Type' of source the packet comes from (for subsidies).
* @param source_id Actual source of the packet (for subsidies).
* @pre count != 0
* @note We have to zero memory ourselves here because we are using a 'new'
* that, in contrary to all other pools, does not memset to 0.
*/
CargoPacket::CargoPacket(StationID source, TileIndex source_xy, uint16 count, SourceType source_type, SourceID source_id) :
feeder_share(0),
count(count),
days_in_transit(0),
source_id(source_id),
source(source),
source_xy(source_xy),
loaded_at_xy(0)
{
assert(count != 0);
this->source_type = source_type;
}
/**
* Creates a new cargo packet. Initializes the fields that cannot be changed later.
* Used when loading or splitting packets.
* @param count Number of cargo entities to put in this packet.
* @param days_in_transit Number of days the cargo has been in transit.
* @param source Station the cargo was initially loaded.
* @param source_xy Station location the cargo was initially loaded.
* @param loaded_at_xy Location the cargo was loaded last.
* @param feeder_share Feeder share the packet has already accumulated.
* @param source_type 'Type' of source the packet comes from (for subsidies).
* @param source_id Actual source of the packet (for subsidies).
* @note We have to zero memory ourselves here because we are using a 'new'
* that, in contrary to all other pools, does not memset to 0.
*/
CargoPacket::CargoPacket(uint16 count, byte days_in_transit, StationID source, TileIndex source_xy, TileIndex loaded_at_xy, Money feeder_share, SourceType source_type, SourceID source_id) :
feeder_share(feeder_share),
count(count),
days_in_transit(days_in_transit),
source_id(source_id),
source(source),
source_xy(source_xy),
loaded_at_xy(loaded_at_xy)
{
assert(count != 0);
this->source_type = source_type;
}
/**
* Split this packet in two and return the split off part.
* @param new_size Size of the split part.
* @return Split off part, or NULL if no packet could be allocated!
*/
CargoPacket *CargoPacket::Split(uint new_size)
{
if (!CargoPacket::CanAllocateItem()) return NULL;
Money fs = this->FeederShare(new_size);
CargoPacket *cp_new = new CargoPacket(new_size, this->days_in_transit, this->source, this->source_xy, this->loaded_at_xy, fs, this->source_type, this->source_id);
this->feeder_share -= fs;
this->count -= new_size;
return cp_new;
}
/**
* Merge another packet into this one.
* @param cp Packet to be merged in.
*/
void CargoPacket::Merge(CargoPacket *cp)
{
this->count += cp->count;
this->feeder_share += cp->feeder_share;
delete cp;
}
/**
* Reduce the packet by the given amount and remove the feeder share.
* @param count Amount to be removed.
*/
void CargoPacket::Reduce(uint count)
{
assert(count < this->count);
this->feeder_share -= this->FeederShare(count);
this->count -= count;
}
/**
* Invalidates (sets source_id to INVALID_SOURCE) all cargo packets from given source.
* @param src_type Type of source.
* @param src Index of source.
*/
/* static */ void CargoPacket::InvalidateAllFrom(SourceType src_type, SourceID src)
{
CargoPacket *cp;
FOR_ALL_CARGOPACKETS(cp) {
if (cp->source_type == src_type && cp->source_id == src) cp->source_id = INVALID_SOURCE;
}
}
/**
* Invalidates (sets source to INVALID_STATION) all cargo packets from given station.
* @param sid Station that gets removed.
*/
/* static */ void CargoPacket::InvalidateAllFrom(StationID sid)
{
CargoPacket *cp;
FOR_ALL_CARGOPACKETS(cp) {
if (cp->source == sid) cp->source = INVALID_STATION;
}
}
/*
*
* Cargo list implementation
*
*/
/**
* Destroy the cargolist ("frees" all cargo packets).
*/
template <class Tinst>
CargoList<Tinst>::~CargoList()
{
for (Iterator it(this->packets.begin()); it != this->packets.end(); ++it) {
delete *it;
}
}
/**
* Empty the cargo list, but don't free the cargo packets;
* the cargo packets are cleaned by CargoPacket's CleanPool.
*/
template <class Tinst>
void CargoList<Tinst>::OnCleanPool()
{
this->packets.clear();
}
/**
* Update the cached values to reflect the removal of this packet or part of it.
* Decreases count and days_in_transit.
* @param cp Packet to be removed from cache.
* @param count Amount of cargo from the given packet to be removed.
*/
template <class Tinst>
void CargoList<Tinst>::RemoveFromCache(const CargoPacket *cp, uint count)
{
assert(count <= cp->count);
this->count -= count;
this->cargo_days_in_transit -= cp->days_in_transit * count;
}
/**
* Update the cache to reflect adding of this packet.
* Increases count and days_in_transit.
* @param cp New packet to be inserted.
*/
template <class Tinst>
void CargoList<Tinst>::AddToCache(const CargoPacket *cp)
{
this->count += cp->count;
this->cargo_days_in_transit += cp->days_in_transit * cp->count;
}
/**
* Truncates the cargo in this list to the given amount. It leaves the
* first cargo entities and removes max_move from the back of the list.
* @param max_move Maximum amount of entities to be removed from the list.
* @return Amount of entities actually moved.
*/
template <class Tinst>
uint CargoList<Tinst>::Truncate(uint max_move)
{
max_move = min(this->count, max_move);
this->PopCargo(CargoRemoval<Tinst>(static_cast<Tinst *>(this), max_move));
return max_move;
}
/**
* Shifts cargo from the front of the packet list and applies some action to it.
* @tparam Taction Action class or function to be used. It should define
* "bool operator()(CargoPacket *)". If true is returned the
* cargo packet will be removed from the list. Otherwise it
* will be kept and the loop will be aborted.
* @param action Action instance to be applied.
*/
template <class Tinst>
template <class Taction>
void CargoList<Tinst>::ShiftCargo(Taction action)
{
Iterator it(this->packets.begin());
while (it != this->packets.end() && action.MaxMove() > 0) {
CargoPacket *cp = *it;
if (action(cp)) {
it = this->packets.erase(it);
} else {
break;
}
}
}
/**
* Pops cargo from the back of the packet list and applies some action to it.
* @tparam Taction Action class or function to be used. It should define
* "bool operator()(CargoPacket *)". If true is returned the
* cargo packet will be removed from the list. Otherwise it
* will be kept and the loop will be aborted.
* @param action Action instance to be applied.
*/
template <class Tinst>
template <class Taction>
void CargoList<Tinst>::PopCargo(Taction action)
{
if (this->packets.empty()) return;
Iterator it(--(this->packets.end()));
Iterator begin(this->packets.begin());
while (action.MaxMove() > 0) {
CargoPacket *cp = *it;
if (action(cp)) {
if (it != begin) {
this->packets.erase(it--);
} else {
this->packets.erase(it);
break;
}
} else {
break;
}
}
}
/** Invalidates the cached data and rebuilds it. */
template <class Tinst>
void CargoList<Tinst>::InvalidateCache()
{
this->count = 0;
this->cargo_days_in_transit = 0;
for (ConstIterator it(this->packets.begin()); it != this->packets.end(); it++) {
static_cast<Tinst *>(this)->AddToCache(*it);
}
}
/**
* Tries to merge the second packet into the first and return if that was
* successful.
* @param icp Packet to be merged into.
* @param cp Packet to be eliminated.
* @return If the packets could be merged.
*/
template <class Tinst>
/* static */ bool CargoList<Tinst>::TryMerge(CargoPacket *icp, CargoPacket *cp)
{
if (Tinst::AreMergable(icp, cp) &&
icp->count + cp->count <= CargoPacket::MAX_COUNT) {
icp->Merge(cp);
return true;
} else {
return false;
}
}
/*
*
* Vehicle cargo list implementation.
*
*/
/**
* Appends the given cargo packet. Tries to merge it with another one in the
* packets list. If no fitting packet is found, appends it. You can only append
* packets to the ranges of packets designated for keeping or loading.
* Furthermore if there are already packets reserved for loading you cannot
* directly add packets to the "keep" list. You first have to load the reserved
* ones.
* @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 Cargo packet to add.
* @param action Either MTA_KEEP if you want to add the packet directly or MTA_LOAD
* if you want to reserve it first.
* @pre cp != NULL
* @pre action == MTA_LOAD || (action == MTA_KEEP && this->designation_counts[MTA_LOAD] == 0)
*/
void VehicleCargoList::Append(CargoPacket *cp, MoveToAction action)
{
assert(cp != NULL);
assert(action == MTA_LOAD ||
(action == MTA_KEEP && this->action_counts[MTA_LOAD] == 0));
this->AddToMeta(cp, action);
if (this->count == cp->count) {
this->packets.push_back(cp);
return;
}
uint sum = cp->count;
for (ReverseIterator it(this->packets.rbegin()); it != this->packets.rend(); it++) {
CargoPacket *icp = *it;
if (VehicleCargoList::TryMerge(icp, cp)) return;
sum += icp->count;
if (sum >= this->action_counts[action]) {
this->packets.push_back(cp);
return;
}
}
NOT_REACHED();
}
/**
* Update the cached values to reflect the removal of this packet or part of it.
* Decreases count, feeder share and days_in_transit.
* @param cp Packet to be removed from cache.
* @param count Amount of cargo from the given packet to be removed.
*/
void VehicleCargoList::RemoveFromCache(const CargoPacket *cp, uint count)
{
this->feeder_share -= cp->FeederShare(count);
this->Parent::RemoveFromCache(cp, count);
}
/**
* Update the cache to reflect adding of this packet.
* Increases count, feeder share and days_in_transit.
* @param cp New packet to be inserted.
*/
void VehicleCargoList::AddToCache(const CargoPacket *cp)
{
this->feeder_share += cp->feeder_share;
this->Parent::AddToCache(cp);
}
/**
* Removes a packet or part of it from the metadata.
* @param cp Packet to be removed.
* @param action MoveToAction of the packet (for updating the counts).
* @param count Amount of cargo to be removed.
*/
void VehicleCargoList::RemoveFromMeta(const CargoPacket *cp, MoveToAction action, uint count)
{
this->AssertCountConsistency();
this->RemoveFromCache(cp, count);
this->action_counts[action] -= count;
this->AssertCountConsistency();
}
/**
* Adds a packet to the metadata.
* @param cp Packet to be added.
* @param action MoveToAction of the packet.
*/
void VehicleCargoList::AddToMeta(const CargoPacket *cp, MoveToAction action)
{
this->AssertCountConsistency();
this->AddToCache(cp);
this->action_counts[action] += cp->count;
this->AssertCountConsistency();
}
/**
* Ages the all cargo in this list.
*/
void VehicleCargoList::AgeCargo()
{
for (ConstIterator it(this->packets.begin()); it != this->packets.end(); it++) {
CargoPacket *cp = *it;
/* If we're at the maximum, then we can't increase no more. */
if (cp->days_in_transit == 0xFF) continue;
cp->days_in_transit++;
this->cargo_days_in_transit += cp->count;
}
}
/**
* Stages cargo for unloading. The cargo is sorted so that packets to be
* transferred, delivered or kept are in consecutive chunks in the list. At the
* same time the designation_counts are updated to reflect the size of those
* chunks.
* @param accepted If the cargo will be accepted at the station.
* @param current_station ID of the station.
* @param order_flags OrderUnloadFlags that will apply to the unload operation.
* return If any cargo will be unloaded.
*/
bool VehicleCargoList::Stage(bool accepted, StationID current_station, uint8 order_flags)
{
this->AssertCountConsistency();
assert(this->action_counts[MTA_LOAD] == 0);
this->action_counts[MTA_TRANSFER] = this->action_counts[MTA_DELIVER] = this->action_counts[MTA_KEEP] = 0;
Iterator deliver = this->packets.end();
Iterator it = this->packets.begin();
uint sum = 0;
while (sum < this->count) {
CargoPacket *cp = *it;
this->packets.erase(it++);
if ((order_flags & OUFB_TRANSFER) != 0 || (!accepted && (order_flags & OUFB_UNLOAD) != 0)) {
this->packets.push_front(cp);
this->action_counts[MTA_TRANSFER] += cp->count;
} else if (accepted && current_station != cp->source && (order_flags & OUFB_NO_UNLOAD) == 0) {
this->packets.insert(deliver, cp);
this->action_counts[MTA_DELIVER] += cp->count;
} else {
this->packets.push_back(cp);
if (deliver == this->packets.end()) --deliver;
this->action_counts[MTA_KEEP] += cp->count;
}
sum += cp->count;
}
this->AssertCountConsistency();
return this->action_counts[MTA_DELIVER] > 0 || this->action_counts[MTA_TRANSFER] > 0;
}
/** Invalidates the cached data and rebuild it. */
void VehicleCargoList::InvalidateCache()
{
this->feeder_share = 0;
this->Parent::InvalidateCache();
}
/**
* Moves some cargo from one designation to another. You can only move
* between adjacent designations. E.g. you can keep cargo that was
* previously reserved (MTA_LOAD) or you can mark cargo to be transferred
* that was previously marked as to be delivered, but you can't reserve
* cargo that's marked as to be delivered.
*/
uint VehicleCargoList::Reassign(uint max_move, MoveToAction from, MoveToAction to)
{
max_move = min(this->action_counts[from], max_move);
assert(Delta((int)from, (int)to) == 1);
this->action_counts[from] -= max_move;
this->action_counts[to] += max_move;
return max_move;
}
/**
* Returns reserved cargo to the station and removes it from the cache.
* @param dest Station the cargo is returned to.
* @param max_move Maximum amount of cargo to move.
* @return Amount of cargo actually returned.
*/
uint VehicleCargoList::Return(uint max_move, StationCargoList *dest)
{
max_move = min(this->action_counts[MTA_LOAD], max_move);
this->PopCargo(CargoReturn(this, dest, max_move));
return max_move;
}
/**
* Shifts cargo between two vehicles.
* @param dest Other vehicle's cargo list.
* @param max_move Maximum amount of cargo to be moved.
* @return Amount of cargo actually moved.
*/
uint VehicleCargoList::Shift(uint max_move, VehicleCargoList *dest)
{
max_move = min(this->count, max_move);
this->PopCargo(CargoShift(this, dest, max_move));
return max_move;
}
/**
* Unloads cargo at the given station. Deliver or transfer, depending on the
* ranges defined by designation_counts.
* @param dest StationCargoList to add transferred cargo to.
* @param max_move Maximum amount of cargo to move.
* @param payment Payment object to register payments in.
* @return Amount of cargo actually unloaded.
*/
uint VehicleCargoList::Unload(uint max_move, StationCargoList *dest, CargoPayment *payment)
{
uint moved = 0;
if (this->action_counts[MTA_TRANSFER] > 0) {
uint move = min(this->action_counts[MTA_TRANSFER], max_move);
this->ShiftCargo(CargoTransfer(this, dest, move, payment));
moved += move;
}
if (this->action_counts[MTA_TRANSFER] == 0 && this->action_counts[MTA_DELIVER] > 0 && moved < max_move) {
uint move = min(this->action_counts[MTA_DELIVER], max_move - moved);
this->ShiftCargo(CargoDelivery(this, move, payment));
moved += move;
}
return moved;
}
/*
*
* Station cargo list implementation.
*
*/
/**
* Appends the given cargo packet. Tries to merge it with another one in the
* packets list. If no fitting packet is found, appends it.
* @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 Cargo packet to add.
* @pre cp != NULL
*/
void StationCargoList::Append(CargoPacket *cp)
{
assert(cp != NULL);
this->AddToCache(cp);
for (List::reverse_iterator it(this->packets.rbegin()); it != this->packets.rend(); it++) {
if (StationCargoList::TryMerge(*it, cp)) return;
}
/* The packet could not be merged with another one */
this->packets.push_back(cp);
}
/**
* Reserves cargo for loading onto the vehicle.
* @param dest VehicleCargoList to reserve for.
* @param max_move Maximum amount of cargo to reserve.
* @param load_place Tile index of the current station.
* @return Amount of cargo actually reserved.
*/
uint StationCargoList::Reserve(uint max_move, VehicleCargoList *dest, TileIndex load_place)
{
max_move = min(this->count, max_move);
this->ShiftCargo(CargoReservation(this, dest, max_move, load_place));
return max_move;
}
/**
* Loads cargo onto a vehicle. If the vehicle has reserved cargo load that.
* Otherwise load cargo from the station.
* @param dest Vehicle cargo list where the cargo resides.
* @param max_move Amount of cargo to load.
* @return Amount of cargo actually loaded.
*/
uint StationCargoList::Load(uint max_move, VehicleCargoList *dest, TileIndex load_place)
{
uint move = min(dest->ActionCount(VehicleCargoList::MTA_LOAD), max_move);
if (move > 0) {
this->reserved_count -= move;
dest->Reassign(move, VehicleCargoList::MTA_LOAD, VehicleCargoList::MTA_KEEP);
} else {
move = min(this->count, max_move);
this->ShiftCargo(CargoLoad(this, dest, move, load_place));
}
return move;
}
/*
* We have to instantiate everything we want to be usable.
*/
template class CargoList<VehicleCargoList>;
template class CargoList<StationCargoList>;
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