210 lines
8.3 KiB
C++
210 lines
8.3 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file currency.cpp Support for different currencies. */
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#include "stdafx.h"
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#include "currency.h"
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#include "news_func.h"
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#include "settings_type.h"
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#include "date_func.h"
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#include "string_type.h"
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#include "table/strings.h"
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/* exchange rate prefix symbol_pos
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* | separator | postfix |
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* | | Euro year | | | name
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* | | | | | | | */
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/** The original currency specifications. */
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static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
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{ 1, "", CF_NOEURO, "\xC2\xA3", "", 0, STR_GAME_OPTIONS_CURRENCY_GBP }, ///< british pound
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{ 2, "", CF_NOEURO, "$", "", 0, STR_GAME_OPTIONS_CURRENCY_USD }, ///< american dollar
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{ 2, "", CF_ISEURO, "\xE2\x82\xAC", "", 0, STR_GAME_OPTIONS_CURRENCY_EUR }, ///< euro
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{ 220, "", CF_NOEURO, "\xC2\xA5", "", 0, STR_GAME_OPTIONS_CURRENCY_JPY }, ///< japanese yen
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{ 27, "", 2002, "", NBSP "S.", 1, STR_GAME_OPTIONS_CURRENCY_ATS }, ///< austrian schilling
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{ 81, "", 2002, "BEF" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_BEF }, ///< belgian franc
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{ 2, "", CF_NOEURO, "CHF" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_CHF }, ///< swiss franc
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{ 41, "", CF_NOEURO, "", NBSP "K\xC4\x8D", 1, STR_GAME_OPTIONS_CURRENCY_CZK }, ///< czech koruna
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{ 4, "", 2002, "DM" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_DEM }, ///< deutsche mark
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{ 11, "", CF_NOEURO, "", NBSP "kr", 1, STR_GAME_OPTIONS_CURRENCY_DKK }, ///< danish krone
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{ 333, "", 2002, "Pts" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_ESP }, ///< spanish peseta
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{ 12, "", 2002, "", NBSP "mk", 1, STR_GAME_OPTIONS_CURRENCY_FIM }, ///< finnish markka
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{ 13, "", 2002, "FF" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_FRF }, ///< french franc
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{ 681, "", 2002, "", "Dr.", 1, STR_GAME_OPTIONS_CURRENCY_GRD }, ///< greek drachma
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{ 378, "", CF_NOEURO, "", NBSP "Ft", 1, STR_GAME_OPTIONS_CURRENCY_HUF }, ///< hungarian forint
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{ 130, "", CF_NOEURO, "", NBSP "Kr", 1, STR_GAME_OPTIONS_CURRENCY_ISK }, ///< icelandic krona
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{ 3873, "", 2002, "", NBSP "L.", 1, STR_GAME_OPTIONS_CURRENCY_ITL }, ///< italian lira
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{ 4, "", 2002, "NLG" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_NLG }, ///< dutch gulden
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{ 12, "", CF_NOEURO, "", NBSP "Kr", 1, STR_GAME_OPTIONS_CURRENCY_NOK }, ///< norwegian krone
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{ 6, "", CF_NOEURO, "", NBSP "z\xC5\x82", 1, STR_GAME_OPTIONS_CURRENCY_PLN }, ///< polish zloty
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{ 5, "", CF_NOEURO, "", NBSP "Lei", 1, STR_GAME_OPTIONS_CURRENCY_RON }, ///< romanian leu
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{ 50, "", CF_NOEURO, "", NBSP "p", 1, STR_GAME_OPTIONS_CURRENCY_RUR }, ///< russian rouble
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{ 479, "", 2007, "", NBSP "SIT", 1, STR_GAME_OPTIONS_CURRENCY_SIT }, ///< slovenian tolar
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{ 13, "", CF_NOEURO, "", NBSP "Kr", 1, STR_GAME_OPTIONS_CURRENCY_SEK }, ///< swedish krona
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{ 3, "", CF_NOEURO, "", NBSP "TL", 1, STR_GAME_OPTIONS_CURRENCY_TRY }, ///< turkish lira
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{ 60, "", 2009, "", NBSP "Sk", 1, STR_GAME_OPTIONS_CURRENCY_SKK }, ///< slovak koruna
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{ 4, "", CF_NOEURO, "R$" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_BRL }, ///< brazil real
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{ 31, "", 2011, "", NBSP "EEK", 1, STR_GAME_OPTIONS_CURRENCY_EEK }, ///< estonian krooni
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{ 4, "", 2014, "", NBSP "Lt", 1, STR_GAME_OPTIONS_CURRENCY_LTL }, ///< lithuanian litas
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{ 1850, "", CF_NOEURO, "\xE2\x82\xA9", "", 0, STR_GAME_OPTIONS_CURRENCY_KRW }, ///< south korean won
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{ 13, "", CF_NOEURO, "R" NBSP, "", 0, STR_GAME_OPTIONS_CURRENCY_ZAR }, ///< south african rand
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{ 1, "", CF_NOEURO, "", "", 2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, ///< custom currency
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};
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/** Array of currencies used by the system */
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CurrencySpec _currency_specs[NUM_CURRENCY];
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/**
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* These enums are only declared in order to make sens
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* out of the TTDPatch_To_OTTDIndex array that will follow
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* Every currency used by Ottd is there, just in case TTDPatch will
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* add those missing in its code
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*/
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enum Currencies {
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CURR_GBP,
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CURR_USD,
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CURR_EUR,
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CURR_JPY,
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CURR_ATS,
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CURR_BEF,
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CURR_CHF,
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CURR_CZK,
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CURR_DEM,
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CURR_DKK,
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CURR_ESP,
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CURR_FIM,
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CURR_FRF,
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CURR_GRD,
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CURR_HUF,
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CURR_ISK,
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CURR_ITL,
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CURR_NLG,
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CURR_NOK,
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CURR_PLN,
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CURR_RON,
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CURR_RUR,
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CURR_SIT,
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CURR_SEK,
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CURR_YTL,
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CURR_SKK,
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CURR_BRL,
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CURR_EEK,
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CURR_LTL,
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};
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/**
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* This array represent the position of OpenTTD's currencies,
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* compared to TTDPatch's ones.
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* When a grf sends currencies, they are based on the order defined by TTDPatch.
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* So, we must reindex them to our own order.
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*/
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const byte TTDPatch_To_OTTDIndex[] =
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{
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CURR_GBP,
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CURR_USD,
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CURR_FRF,
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CURR_DEM,
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CURR_JPY,
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CURR_ESP,
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CURR_HUF,
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CURR_PLN,
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CURR_ATS,
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CURR_BEF,
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CURR_DKK,
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CURR_FIM,
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CURR_GRD,
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CURR_CHF,
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CURR_NLG,
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CURR_ITL,
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CURR_SEK,
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CURR_RUR,
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CURR_EUR,
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};
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/**
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* Will return the ottd's index correspondance to
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* the ttdpatch's id. If the id is bigger than the array,
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* it is a grf written for ottd, thus returning the same id.
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* Only called from newgrf.cpp
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* @param grfcurr_id currency id coming from newgrf
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* @return the corrected index
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*/
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byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
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{
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return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
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}
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/**
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* get a mask of the allowed currencies depending on the year
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* @return mask of currencies
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*/
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uint GetMaskOfAllowedCurrencies()
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{
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uint mask = 0;
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uint i;
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for (i = 0; i < NUM_CURRENCY; i++) {
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Year to_euro = _currency_specs[i].to_euro;
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if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
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if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
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mask |= (1 << i);
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}
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mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency
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return mask;
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}
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/**
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* Verify if the currency chosen by the user is about to be converted to Euro
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*/
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void CheckSwitchToEuro()
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{
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if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
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_currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
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_cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
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_settings_game.locale.currency = 2; // this is the index of euro above.
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AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NS_ECONOMY);
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}
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}
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/**
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* Will fill _currency_specs array with
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* default values from origin_currency_specs
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* Called only from newgrf.cpp and settings.cpp.
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* @param preserve_custom will not reset custom currency (the latest one on the list)
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* if ever it is flagged to true. In which case, the total size of the memory to move
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* will be one currency spec less, thus preserving the custom curreny from been
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* overwritten.
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*/
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void ResetCurrencies(bool preserve_custom)
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{
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memcpy(&_currency_specs, &origin_currency_specs, sizeof(origin_currency_specs) - (preserve_custom ? sizeof(_custom_currency) : 0));
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}
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/**
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* Build a list of currency names StringIDs to use in a dropdown list
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* @return Pointer to a (static) array of StringIDs
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*/
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StringID *BuildCurrencyDropdown()
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{
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/* Allow room for all currencies, plus a terminator entry */
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static StringID names[NUM_CURRENCY + 1];
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uint i;
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/* Add each name */
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for (i = 0; i < NUM_CURRENCY; i++) {
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names[i] = _currency_specs[i].name;
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}
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/* Terminate the list */
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names[i] = INVALID_STRING_ID;
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return names;
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}
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