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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 cargomonitor.h Cargo transport monitoring declarations. */
#ifndef CARGOMONITOR_H
#define CARGOMONITOR_H
#include "cargo_type.h"
#include "company_func.h"
#include "industry.h"
#include "town.h"
#include <map>
struct Station;
/**
* Unique number for a company / cargo type / (town or industry).
* Encoding is as follows:
* - bits 0-15 town or industry number
* - bit 16 is set if it is an industry number (else it is a town number).
* - bits 19-23 Cargo type.
* - bits 24-31 %Company number.
*/
typedef uint32 CargoMonitorID; ///< Type of the cargo monitor number.
/** Map type for storing and updating active cargo monitor numbers and their amounts. */
typedef std::map<CargoMonitorID, uint32> CargoMonitorMap;
extern CargoMonitorMap _cargo_pickups;
extern CargoMonitorMap _cargo_deliveries;
/** Constants for encoding and extracting cargo monitors. */
enum CargoCompanyBits {
CCB_TOWN_IND_NUMBER_START = 0, ///< Start bit of the town or industry number.
CCB_TOWN_IND_NUMBER_LENGTH = 16, ///< Number of bits of the town or industry number.
CCB_IS_INDUSTRY_BIT = 16, ///< Bit indicating the town/industry number is an industry.
CCB_IS_INDUSTRY_BIT_VALUE = 1ul << CCB_IS_INDUSTRY_BIT, ///< Value of the #CCB_IS_INDUSTRY_BIT bit.
CCB_CARGO_TYPE_START = 19, ///< Start bit of the cargo type field.
CCB_CARGO_TYPE_LENGTH = 5, ///< Number of bits of the cargo type field.
CCB_COMPANY_START = 24, ///< Start bit of the company field.
CCB_COMPANY_LENGTH = 8, ///< Number of bits of the company field.
};
/**
* Encode a cargo monitor for pickup or delivery at an industry.
* @param company Company performing the transport.
* @param ctype Cargo type being transported.
* @param ind %Industry providing or accepting the cargo.
* @return The encoded cargo/company/industry number.
*/
static inline CargoMonitorID EncodeCargoIndustryMonitor(CompanyID company, CargoID ctype, IndustryID ind)
{
assert(ctype < (1 << CCB_CARGO_TYPE_LENGTH));
uint32 ret = 0;
SB(ret, CCB_TOWN_IND_NUMBER_START, CCB_TOWN_IND_NUMBER_LENGTH, ind);
SetBit(ret, CCB_IS_INDUSTRY_BIT);
SB(ret, CCB_CARGO_TYPE_START, CCB_CARGO_TYPE_LENGTH, ctype);
SB(ret, CCB_COMPANY_START, CCB_COMPANY_LENGTH, company);
return ret;
}
/**
* Encode a cargo monitoring number for pickup or delivery at a town.
* @param company %Company performing the transport.
* @param ctype Cargo type being transported.
* @param town %Town providing or accepting the cargo.
* @return The encoded cargo/company/town number.
*/
static inline CargoMonitorID EncodeCargoTownMonitor(CompanyID company, CargoID ctype, TownID town)
{
assert(ctype < (1 << CCB_CARGO_TYPE_LENGTH));
uint32 ret = 0;
SB(ret, CCB_TOWN_IND_NUMBER_START, CCB_TOWN_IND_NUMBER_LENGTH, town);
SB(ret, CCB_CARGO_TYPE_START, CCB_CARGO_TYPE_LENGTH, ctype);
SB(ret, CCB_COMPANY_START, CCB_COMPANY_LENGTH, company);
return ret;
}
/**
* Extract the company from the cargo monitor.
* @param num Cargo monitoring number to decode.
* @return The extracted company id.
*/
static inline CompanyID DecodeMonitorCompany(CargoMonitorID num)
{
return static_cast<CompanyID>(GB(num, CCB_COMPANY_START, CCB_COMPANY_LENGTH));
}
/**
* Extract the cargo type from the cargo monitor.
* @param num Cargo monitoring number to decode.
* @return The extracted cargo type.
*/
static inline CargoID DecodeMonitorCargoType(CargoMonitorID num)
{
return GB(num, CCB_CARGO_TYPE_START, CCB_CARGO_TYPE_LENGTH);
}
/**
* Does the cargo number monitor an industry or a town?
* @param num Cargo monitoring number to decode.
* @return true if monitoring an industry, false if monitoring a town.
*/
static inline bool MonitorMonitorsIndustry(CargoMonitorID num)
{
return HasBit(num, CCB_IS_INDUSTRY_BIT);
}
/**
* Extract the industry number from the cargo monitor.
* @param num Cargo monitoring number to decode.
* @return The extracted industry id, or #INVALID_INDUSTRY if the number does not monitor an industry.
*/
static inline IndustryID DecodeMonitorIndustry(CargoMonitorID num)
{
if (!MonitorMonitorsIndustry(num)) return INVALID_INDUSTRY;
return GB(num, CCB_TOWN_IND_NUMBER_START, CCB_TOWN_IND_NUMBER_LENGTH);
}
/**
* Extract the town number from the cargo monitor.
* @param num Cargo monitoring number to decode.
* @return The extracted town id, or #INVALID_TOWN if the number does not monitor a town.
*/
static inline TownID DecodeMonitorTown(CargoMonitorID num)
{
if (MonitorMonitorsIndustry(num)) return INVALID_TOWN;
return GB(num, CCB_TOWN_IND_NUMBER_START, CCB_TOWN_IND_NUMBER_LENGTH);
}
void ClearCargoPickupMonitoring(CompanyID company = INVALID_OWNER);
void ClearCargoDeliveryMonitoring(CompanyID company = INVALID_OWNER);
uint32 GetDeliveryAmount(CargoMonitorID monitor, bool keep_monitoring);
uint32 GetPickupAmount(CargoMonitorID monitor, bool keep_monitoring);
void AddCargoDelivery(CargoID cargo_type, CompanyID company, uint32 amount, SourceType src_type, SourceID src, const Station *st);
#endif /* CARGOMONITOR_H */
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