mirror of https://github.com/OpenTTD/OpenTTD.git
99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
/*
|
|
* 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 economy_func.h Functions related to the economy. */
|
|
|
|
#ifndef ECONOMY_FUNC_H
|
|
#define ECONOMY_FUNC_H
|
|
|
|
#include "economy_type.h"
|
|
#include "station_type.h"
|
|
#include "cargo_type.h"
|
|
#include "vehicle_type.h"
|
|
#include "company_type.h"
|
|
#include "settings_type.h"
|
|
#include "core/random_func.hpp"
|
|
|
|
void ResetPriceBaseMultipliers();
|
|
void SetPriceBaseMultiplier(Price price, int factor);
|
|
|
|
extern const ScoreInfo _score_info[];
|
|
extern int64_t _score_part[MAX_COMPANIES][SCORE_END];
|
|
extern Economy _economy;
|
|
/* Prices and also the fractional part. */
|
|
extern Prices _price;
|
|
|
|
int UpdateCompanyRatingAndValue(Company *c, bool update);
|
|
void StartupIndustryDailyChanges(bool init_counter);
|
|
|
|
Money GetTransportedGoodsIncome(uint num_pieces, uint dist, uint16_t transit_periods, CargoID cargo_type);
|
|
uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations, Owner exclusivity = INVALID_OWNER);
|
|
|
|
void PrepareUnload(Vehicle *front_v);
|
|
void LoadUnloadStation(Station *st);
|
|
|
|
Money GetPrice(Price index, uint cost_factor, const struct GRFFile *grf_file, int shift = 0);
|
|
|
|
void InitializeEconomy();
|
|
void RecomputePrices();
|
|
bool AddInflation(bool check_year = true);
|
|
|
|
/**
|
|
* Is the economy in recession?
|
|
* @return \c True if economy is in recession, \c false otherwise.
|
|
*/
|
|
inline bool EconomyIsInRecession()
|
|
{
|
|
return _economy.fluct <= 0;
|
|
}
|
|
|
|
/**
|
|
* Scale a number by the inverse of the cargo scale setting, e.g. a scale of 25% multiplies the number by 4.
|
|
* @param num The number to scale.
|
|
* @param town Are we scaling town production, or industry production?
|
|
* @return The number scaled by the inverse of the cargo scale setting, minimum of 1.
|
|
*/
|
|
static uint ScaleByInverseCargoScale(uint num, bool town)
|
|
{
|
|
uint16_t percentage = (town ? _settings_game.economy.town_cargo_scale : _settings_game.economy.industry_cargo_scale);
|
|
|
|
/* We might not need to do anything. */
|
|
if (percentage == 100) return num;
|
|
|
|
/* Never return 0, since we often divide by this number. */
|
|
return std::max((num * 100) / percentage, 1u);
|
|
}
|
|
|
|
/**
|
|
* Scale a number by the cargo scale setting.
|
|
* @param num The number to scale.
|
|
* @param town Are we scaling town production, or industry production?
|
|
* @return The number scaled by the current cargo scale setting. May be 0.
|
|
*/
|
|
inline uint ScaleByCargoScale(uint num, bool town)
|
|
{
|
|
/* Don't bother scaling in the menu, especially since settings don't exist when starting OpenTTD and trying to read them crashes the game. */
|
|
if (_game_mode == GM_MENU) return num;
|
|
|
|
if (num == 0) return num;
|
|
|
|
uint16_t percentage = (town ? _settings_game.economy.town_cargo_scale : _settings_game.economy.industry_cargo_scale);
|
|
|
|
/* We might not need to do anything. */
|
|
if (percentage == 100) return num;
|
|
|
|
uint scaled = (num * percentage) / 100;
|
|
|
|
/* We might round down to 0, so we compensate with a random chance approximately equal to the economy scale,
|
|
* e.g. at 25% scale there's a 1/4 chance to round up to 1. */
|
|
if (scaled == 0 && Chance16(1, ScaleByInverseCargoScale(1, town))) return 1;
|
|
|
|
return scaled;
|
|
}
|
|
|
|
#endif /* ECONOMY_FUNC_H */
|