currency.cpp

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00001 /* $Id: currency.cpp 25076 2013-03-09 16:31:56Z planetmaker $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "core/bitmath_func.hpp"
00014 
00015 #include "currency.h"
00016 #include "news_func.h"
00017 #include "settings_type.h"
00018 #include "date_func.h"
00019 #include "string_type.h"
00020 
00021 #include "table/strings.h"
00022 
00023   /*   exchange rate    prefix                         symbol_pos
00024    *   |  separator        |           postfix             |
00025    *   |   |   Euro year   |              |                | name
00026    *   |   |    |          |              |                |  | */
00028 static const CurrencySpec origin_currency_specs[CURRENCY_END] = {
00029   {    1, "", CF_NOEURO, "\xC2\xA3",     "",               0, STR_GAME_OPTIONS_CURRENCY_GBP    }, 
00030   {    2, "", CF_NOEURO, "$",            "",               0, STR_GAME_OPTIONS_CURRENCY_USD    }, 
00031   {    2, "", CF_ISEURO, "\xE2\x82\xAC", "",               0, STR_GAME_OPTIONS_CURRENCY_EUR    }, 
00032   {  220, "", CF_NOEURO, "\xC2\xA5",     "",               0, STR_GAME_OPTIONS_CURRENCY_JPY    }, 
00033   {   27, "", 2002,      "",             NBSP "S.",        1, STR_GAME_OPTIONS_CURRENCY_ATS    }, 
00034   {   81, "", 2002,      "BEF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_BEF    }, 
00035   {    2, "", CF_NOEURO, "CHF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_CHF    }, 
00036   {   41, "", CF_NOEURO, "",             NBSP "K\xC4\x8D", 1, STR_GAME_OPTIONS_CURRENCY_CZK    }, 
00037   {    4, "", 2002,      "DM" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_DEM    }, 
00038   {   11, "", CF_NOEURO, "",             NBSP "kr",        1, STR_GAME_OPTIONS_CURRENCY_DKK    }, 
00039   {  333, "", 2002,      "Pts" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_ESP    }, 
00040   {   12, "", 2002,      "",             NBSP "mk",        1, STR_GAME_OPTIONS_CURRENCY_FIM    }, 
00041   {   13, "", 2002,      "FF" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_FRF    }, 
00042   {  681, "", 2002,      "",             "Dr.",            1, STR_GAME_OPTIONS_CURRENCY_GRD    }, 
00043   {  378, "", CF_NOEURO, "",             NBSP "Ft",        1, STR_GAME_OPTIONS_CURRENCY_HUF    }, 
00044   {  130, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_ISK    }, 
00045   { 3873, "", 2002,      "",             NBSP "L.",        1, STR_GAME_OPTIONS_CURRENCY_ITL    }, 
00046   {    4, "", 2002,      "NLG" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_NLG    }, 
00047   {   12, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_NOK    }, 
00048   {    6, "", CF_NOEURO, "",             NBSP "z\xC5\x82", 1, STR_GAME_OPTIONS_CURRENCY_PLN    }, 
00049   {    5, "", CF_NOEURO, "",             NBSP "Lei",       1, STR_GAME_OPTIONS_CURRENCY_RON    }, 
00050   {   50, "", CF_NOEURO, "",             NBSP "p",         1, STR_GAME_OPTIONS_CURRENCY_RUR    }, 
00051   {  479, "", 2007,      "",             NBSP "SIT",       1, STR_GAME_OPTIONS_CURRENCY_SIT    }, 
00052   {   13, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_SEK    }, 
00053   {    3, "", CF_NOEURO, "",             NBSP "TL",        1, STR_GAME_OPTIONS_CURRENCY_TRY    }, 
00054   {   60, "", 2009,      "",             NBSP "Sk",        1, STR_GAME_OPTIONS_CURRENCY_SKK    }, 
00055   {    4, "", CF_NOEURO, "R$" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_BRL    }, 
00056   {   31, "", 2011,      "",             NBSP "EEK",       1, STR_GAME_OPTIONS_CURRENCY_EEK    }, 
00057   {    4, "", 2014,      "",             NBSP "Lt",        1, STR_GAME_OPTIONS_CURRENCY_LTL    }, 
00058   { 1850, "", CF_NOEURO, "\xE2\x82\xA9", "",               0, STR_GAME_OPTIONS_CURRENCY_KRW    }, 
00059   {   13, "", CF_NOEURO, "R" NBSP,       "",               0, STR_GAME_OPTIONS_CURRENCY_ZAR    }, 
00060   {    1, "", CF_NOEURO, "",             "",               2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, 
00061   {    3, "", CF_NOEURO, "",             NBSP "GEL",       1, STR_GAME_OPTIONS_CURRENCY_GEL    }, 
00062   { 4901, "", CF_NOEURO, "",             NBSP "Rls",       1, STR_GAME_OPTIONS_CURRENCY_IRR    }, 
00063 };
00064 
00066 CurrencySpec _currency_specs[CURRENCY_END];
00067 
00074 const byte TTDPatch_To_OTTDIndex[] =
00075 {
00076   CURRENCY_GBP,
00077   CURRENCY_USD,
00078   CURRENCY_FRF,
00079   CURRENCY_DEM,
00080   CURRENCY_JPY,
00081   CURRENCY_ESP,
00082   CURRENCY_HUF,
00083   CURRENCY_PLN,
00084   CURRENCY_ATS,
00085   CURRENCY_BEF,
00086   CURRENCY_DKK,
00087   CURRENCY_FIM,
00088   CURRENCY_GRD,
00089   CURRENCY_CHF,
00090   CURRENCY_NLG,
00091   CURRENCY_ITL,
00092   CURRENCY_SEK,
00093   CURRENCY_RUR,
00094   CURRENCY_EUR,
00095 };
00096 
00105 byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
00106 {
00107   return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
00108 }
00109 
00114 uint64 GetMaskOfAllowedCurrencies()
00115 {
00116   uint64 mask = 0LL;
00117   uint i;
00118 
00119   for (i = 0; i < CURRENCY_END; i++) {
00120     Year to_euro = _currency_specs[i].to_euro;
00121 
00122     if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
00123     if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
00124     SetBit(mask, i);
00125   }
00126   SetBit(mask, CURRENCY_CUSTOM); // always allow custom currency
00127   return mask;
00128 }
00129 
00133 void CheckSwitchToEuro()
00134 {
00135   if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
00136       _currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
00137       _cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
00138     _settings_game.locale.currency = 2; // this is the index of euro above.
00139     AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NT_ECONOMY, NF_NORMAL);
00140   }
00141 }
00142 
00152 void ResetCurrencies(bool preserve_custom)
00153 {
00154   memcpy(&_currency_specs, &origin_currency_specs, sizeof(origin_currency_specs) - (preserve_custom ? sizeof(_custom_currency) : 0));
00155 }
00156 
00161 StringID *BuildCurrencyDropdown()
00162 {
00163   /* Allow room for all currencies, plus a terminator entry */
00164   static StringID names[CURRENCY_END + 1];
00165   uint i;
00166 
00167   /* Add each name */
00168   for (i = 0; i < CURRENCY_END; i++) {
00169     names[i] = _currency_specs[i].name;
00170   }
00171   /* Terminate the list */
00172   names[i] = INVALID_STRING_ID;
00173 
00174   return names;
00175 }