currency.cpp

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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/>.
 */
 
#include "stdafx.h"
#include "core/bitmath_func.hpp"
 
#include "currency.h"
#include "news_func.h"
#include "settings_type.h"
#include "string_type.h"
#include "timer/timer.h"
#include "timer/timer_game_calendar.h"
 
#include "table/strings.h"
 
#include "safeguards.h"
 
  /*   exchange rate    prefix                             code
   *   |  separator        |           postfix              |  symbol_pos
   *   |   |   Euro year   |              |                 |     | name
   *   |   |    |          |              |                 |     |  | */
static const CurrencySpec origin_currency_specs[CURRENCY_END] = {
  {    1, "", CF_NOEURO, "\u00a3",   "",             "GBP", 0, STR_GAME_OPTIONS_CURRENCY_GBP    }, 
  {    2, "", CF_NOEURO, "$",        "",             "USD", 0, STR_GAME_OPTIONS_CURRENCY_USD    }, 
  {    2, "", CF_ISEURO, "\u20ac",   "",             "EUR", 0, STR_GAME_OPTIONS_CURRENCY_EUR    }, 
  {  220, "", CF_NOEURO, "\u00a5",   "",             "JPY", 0, STR_GAME_OPTIONS_CURRENCY_JPY    }, 
  {   27, "", 2002,      "",         NBSP "S.",      "ATS", 1, STR_GAME_OPTIONS_CURRENCY_ATS    }, 
  {   81, "", 2002,      "BEF" NBSP, "",             "BEF", 0, STR_GAME_OPTIONS_CURRENCY_BEF    }, 
  {    2, "", CF_NOEURO, "CHF" NBSP, "",             "CHF", 0, STR_GAME_OPTIONS_CURRENCY_CHF    }, 
  {   41, "", CF_NOEURO, "",         NBSP "K\u010d", "CZK", 1, STR_GAME_OPTIONS_CURRENCY_CZK    }, 
  {    4, "", 2002,      "DM" NBSP,  "",             "DEM", 0, STR_GAME_OPTIONS_CURRENCY_DEM    }, 
  {   11, "", CF_NOEURO, "",         NBSP "kr",      "DKK", 1, STR_GAME_OPTIONS_CURRENCY_DKK    }, 
  {  333, "", 2002,      "Pts" NBSP, "",             "ESP", 0, STR_GAME_OPTIONS_CURRENCY_ESP    }, 
  {   12, "", 2002,      "",         NBSP "mk",      "FIM", 1, STR_GAME_OPTIONS_CURRENCY_FIM    }, 
  {   13, "", 2002,      "FF" NBSP,  "",             "FRF", 0, STR_GAME_OPTIONS_CURRENCY_FRF    }, 
  {  681, "", 2002,      "",         "Dr.",          "GRD", 1, STR_GAME_OPTIONS_CURRENCY_GRD    }, 
  {  378, "", CF_NOEURO, "",         NBSP "Ft",      "HUF", 1, STR_GAME_OPTIONS_CURRENCY_HUF    }, 
  {  130, "", CF_NOEURO, "",         NBSP "Kr",      "ISK", 1, STR_GAME_OPTIONS_CURRENCY_ISK    }, 
  { 3873, "", 2002,      "",         NBSP "L.",      "ITL", 1, STR_GAME_OPTIONS_CURRENCY_ITL    }, 
  {    4, "", 2002,      "NLG" NBSP, "",             "NLG", 0, STR_GAME_OPTIONS_CURRENCY_NLG    }, 
  {   12, "", CF_NOEURO, "",         NBSP "Kr",      "NOK", 1, STR_GAME_OPTIONS_CURRENCY_NOK    }, 
  {    6, "", CF_NOEURO, "",         NBSP "z\u0142", "PLN", 1, STR_GAME_OPTIONS_CURRENCY_PLN    }, 
  {    5, "", CF_NOEURO, "",         NBSP "Lei",     "RON", 1, STR_GAME_OPTIONS_CURRENCY_RON    }, 
  {   50, "", CF_NOEURO, "",         NBSP "p",       "RUR", 1, STR_GAME_OPTIONS_CURRENCY_RUR    }, 
  {  479, "", 2007,      "",         NBSP "SIT",     "SIT", 1, STR_GAME_OPTIONS_CURRENCY_SIT    }, 
  {   13, "", CF_NOEURO, "",         NBSP "Kr",      "SEK", 1, STR_GAME_OPTIONS_CURRENCY_SEK    }, 
  {    3, "", CF_NOEURO, "",         NBSP "TL",      "TRY", 1, STR_GAME_OPTIONS_CURRENCY_TRY    }, 
  {   60, "", 2009,      "",         NBSP "Sk",      "SKK", 1, STR_GAME_OPTIONS_CURRENCY_SKK    }, 
  {    4, "", CF_NOEURO, "R$" NBSP,  "",             "BRL", 0, STR_GAME_OPTIONS_CURRENCY_BRL    }, 
  {   31, "", 2011,      "",         NBSP "EEK",     "EEK", 1, STR_GAME_OPTIONS_CURRENCY_EEK    }, 
  {    4, "", 2015,      "",         NBSP "Lt",      "LTL", 1, STR_GAME_OPTIONS_CURRENCY_LTL    }, 
  { 1850, "", CF_NOEURO, "\u20a9",   "",             "KRW", 0, STR_GAME_OPTIONS_CURRENCY_KRW    }, 
  {   13, "", CF_NOEURO, "R" NBSP,   "",             "ZAR", 0, STR_GAME_OPTIONS_CURRENCY_ZAR    }, 
  {    1, "", CF_NOEURO, "",         "",             "",    2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, 
  {    3, "", CF_NOEURO, "",         NBSP "GEL",     "GEL", 1, STR_GAME_OPTIONS_CURRENCY_GEL    }, 
  { 4901, "", CF_NOEURO, "",         NBSP "Rls",     "IRR", 1, STR_GAME_OPTIONS_CURRENCY_IRR    }, 
  {   80, "", CF_NOEURO, "",         NBSP "rub",     "RUB", 1, STR_GAME_OPTIONS_CURRENCY_RUB    }, 
  {   24, "", CF_NOEURO, "$",        "",             "MXN", 0, STR_GAME_OPTIONS_CURRENCY_MXN    }, 
  {   40, "", CF_NOEURO, "NTD" NBSP, "",             "NTD", 0, STR_GAME_OPTIONS_CURRENCY_NTD    }, 
  {    8, "", CF_NOEURO, "\u00a5",   "",             "CNY", 0, STR_GAME_OPTIONS_CURRENCY_CNY    }, 
  {   10, "", CF_NOEURO, "HKD" NBSP, "",             "HKD", 0, STR_GAME_OPTIONS_CURRENCY_HKD    }, 
  {   90, "", CF_NOEURO, "\u20b9",   "",             "INR", 0, STR_GAME_OPTIONS_CURRENCY_INR    }, 
  {   19, "", CF_NOEURO, "Rp",       "",             "IDR", 0, STR_GAME_OPTIONS_CURRENCY_IDR    }, 
  {    5, "", CF_NOEURO, "RM",       "",             "MYR", 0, STR_GAME_OPTIONS_CURRENCY_MYR    }, 
  {    1, "", 2014,      "",         NBSP "Ls",      "LVL", 1, STR_GAME_OPTIONS_CURRENCY_LVL    }, 
};
 
CurrencySpec _currency_specs[CURRENCY_END];
 
const byte TTDPatch_To_OTTDIndex[] =
{
  CURRENCY_GBP,
  CURRENCY_USD,
  CURRENCY_FRF,
  CURRENCY_DEM,
  CURRENCY_JPY,
  CURRENCY_ESP,
  CURRENCY_HUF,
  CURRENCY_PLN,
  CURRENCY_ATS,
  CURRENCY_BEF,
  CURRENCY_DKK,
  CURRENCY_FIM,
  CURRENCY_GRD,
  CURRENCY_CHF,
  CURRENCY_NLG,
  CURRENCY_ITL,
  CURRENCY_SEK,
  CURRENCY_RUR,
  CURRENCY_EUR,
};
 
byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
{
  return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
}
 
uint64_t GetMaskOfAllowedCurrencies()
{
  uint64_t mask = 0LL;
  uint i;
 
  for (i = 0; i < CURRENCY_END; i++) {
    TimerGameCalendar::Year to_euro = _currency_specs[i].to_euro;
 
    if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && TimerGameCalendar::year >= to_euro) continue;
    if (to_euro == CF_ISEURO && TimerGameCalendar::year < 2000) continue;
    SetBit(mask, i);
  }
  SetBit(mask, CURRENCY_CUSTOM); // always allow custom currency
  return mask;
}
 
static IntervalTimer<TimerGameCalendar> _check_switch_to_euro({TimerGameCalendar::YEAR, TimerGameCalendar::Priority::NONE}, [](auto)
{
  if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
      _currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
      TimerGameCalendar::year >= _currency_specs[_settings_game.locale.currency].to_euro) {
    _settings_game.locale.currency = 2; // this is the index of euro above.
    AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NT_ECONOMY, NF_NORMAL);
  }
});
 
void ResetCurrencies(bool preserve_custom)
{
  for (uint i = 0; i < CURRENCY_END; i++) {
    if (preserve_custom && i == CURRENCY_CUSTOM) continue;
    _currency_specs[i] = origin_currency_specs[i];
  }
}