currency.cpp

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00001 /* $Id: currency.cpp 18434 2009-12-08 20:12:43Z rubidium $ */
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 "currency.h"
00014 #include "news_func.h"
00015 #include "settings_type.h"
00016 #include "date_func.h"
00017 
00018 #include "table/strings.h"
00019 
00020   /*   exchange rate    prefix                      symbol_pos
00021    *   |  separator        |           postfix          |
00022    *   |   |   Euro year   |              |             | name
00023    *   |   |    |          |              |             |  | */
00024 static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
00025   {    1, "", CF_NOEURO, "\xC2\xA3",     "",           0, STR_GAME_OPTIONS_CURRENCY_GBP    }, 
00026   {    2, "", CF_NOEURO, "$",            "",           0, STR_GAME_OPTIONS_CURRENCY_USD    }, 
00027   {    2, "", CF_ISEURO, "\xE2\x82\xAC", "",           0, STR_GAME_OPTIONS_CURRENCY_EUR    }, 
00028   {  220, "", CF_NOEURO, "\xC2\xA5",     "",           0, STR_GAME_OPTIONS_CURRENCY_YEN    }, 
00029   {   20, "", 2002,      "",             " S.",        1, STR_GAME_OPTIONS_CURRENCY_ATS    }, 
00030   {   59, "", 2002,      "BEF ",         "",           0, STR_GAME_OPTIONS_CURRENCY_BEF    }, 
00031   {    2, "", CF_NOEURO, "CHF ",         "",           0, STR_GAME_OPTIONS_CURRENCY_CHF    }, 
00032   {   41, "", CF_NOEURO, "",             " K\xC4\x8D", 1, STR_GAME_OPTIONS_CURRENCY_CZK    }, 
00033   {    3, "", 2002,      "DM ",          "",           0, STR_GAME_OPTIONS_CURRENCY_DEM    }, 
00034   {   11, "", CF_NOEURO, "",             " kr",        1, STR_GAME_OPTIONS_CURRENCY_DKK    }, 
00035   {  245, "", 2002,      "Pts ",         "",           0, STR_GAME_OPTIONS_CURRENCY_ESP    }, 
00036   {    9, "", 2002,      "",             " mk",        1, STR_GAME_OPTIONS_CURRENCY_FIM    }, 
00037   {   10, "", 2002,      "FF ",          "",           0, STR_GAME_OPTIONS_CURRENCY_FRF    }, 
00038   {  500, "", 2002,      "",             "Dr.",        1, STR_GAME_OPTIONS_CURRENCY_GRD    }, 
00039   {  378, "", CF_NOEURO, "",             " Ft",        1, STR_GAME_OPTIONS_CURRENCY_HUF    }, 
00040   {  130, "", CF_NOEURO, "",             " Kr",        1, STR_GAME_OPTIONS_CURRENCY_ISK    }, 
00041   { 2850, "", 2002,      "",             " L.",        1, STR_GAME_OPTIONS_CURRENCY_ITL    }, 
00042   {    3, "", 2002,      "NLG ",         "",           0, STR_GAME_OPTIONS_CURRENCY_NLG    }, 
00043   {   12, "", CF_NOEURO, "",             " Kr",        1, STR_GAME_OPTIONS_CURRENCY_NOK    }, 
00044   {    6, "", CF_NOEURO, "",             " z\xC5\x82", 1, STR_GAME_OPTIONS_CURRENCY_PLN    }, 
00045   {    5, "", CF_NOEURO, "",             " Lei",       1, STR_GAME_OPTIONS_CURRENCY_RON    }, 
00046   {   50, "", CF_NOEURO, "",             " p",         1, STR_GAME_OPTIONS_CURRENCY_RUR    }, 
00047   {  352, "", 2007,      "",             " SIT",       1, STR_GAME_OPTIONS_CURRENCY_SIT    }, 
00048   {   13, "", CF_NOEURO, "",             " Kr",        1, STR_GAME_OPTIONS_CURRENCY_SEK    }, 
00049   {    3, "", CF_NOEURO, "",             " TL",        1, STR_GAME_OPTIONS_CURRENCY_TRY    }, 
00050   {   52, "", 2009,      "",             " Sk",        1, STR_GAME_OPTIONS_CURRENCY_SKK    }, 
00051   {    4, "", CF_NOEURO, "R$ ",          "",           0, STR_GAME_OPTIONS_CURRENCY_BRL    }, 
00052   {   20, "", CF_NOEURO, "",             " EEK",       1, STR_GAME_OPTIONS_CURRENCY_EEK    }, 
00053   {    1, "", CF_NOEURO, "",             "",           2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, 
00054 };
00055 
00056 /* Array of currencies used by the system */
00057 CurrencySpec _currency_specs[NUM_CURRENCY];
00058 
00065 enum {
00066   CURR_GBP,
00067   CURR_USD,
00068   CURR_EUR,
00069   CURR_YEN,
00070   CURR_ATS,
00071   CURR_BEF,
00072   CURR_CHF,
00073   CURR_CZK,
00074   CURR_DEM,
00075   CURR_DKK,
00076   CURR_ESP,
00077   CURR_FIM,
00078   CURR_FRF,
00079   CURR_GRD,
00080   CURR_HUF,
00081   CURR_ISK,
00082   CURR_ITL,
00083   CURR_NLG,
00084   CURR_NOK,
00085   CURR_PLN,
00086   CURR_RON,
00087   CURR_RUR,
00088   CURR_SIT,
00089   CURR_SEK,
00090   CURR_YTL,
00091   CURR_SKK,
00092   CURR_BRL,
00093   CURR_EEK,
00094 };
00095 
00102 const byte TTDPatch_To_OTTDIndex[] =
00103 {
00104   CURR_GBP,
00105   CURR_USD,
00106   CURR_FRF,
00107   CURR_DEM,
00108   CURR_YEN,
00109   CURR_ESP,
00110   CURR_HUF,
00111   CURR_PLN,
00112   CURR_ATS,
00113   CURR_BEF,
00114   CURR_DKK,
00115   CURR_FIM,
00116   CURR_GRD,
00117   CURR_CHF,
00118   CURR_NLG,
00119   CURR_ITL,
00120   CURR_SEK,
00121   CURR_RUR,
00122   CURR_EUR,
00123 };
00124 
00133 byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
00134 {
00135   return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
00136 }
00137 
00142 uint GetMaskOfAllowedCurrencies()
00143 {
00144   uint mask = 0;
00145   uint i;
00146 
00147   for (i = 0; i < NUM_CURRENCY; i++) {
00148     Year to_euro = _currency_specs[i].to_euro;
00149 
00150     if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
00151     if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
00152     mask |= (1 << i);
00153   }
00154   mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency
00155   return mask;
00156 }
00157 
00161 void CheckSwitchToEuro()
00162 {
00163   if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
00164       _currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
00165       _cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
00166     _settings_game.locale.currency = 2; // this is the index of euro above.
00167     AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NS_ECONOMY);
00168   }
00169 }
00170 
00180 void ResetCurrencies(bool preserve_custom)
00181 {
00182   memcpy(&_currency_specs, &origin_currency_specs, sizeof(origin_currency_specs) - (preserve_custom ? sizeof(_custom_currency) : 0));
00183 }
00184 
00189 StringID *BuildCurrencyDropdown()
00190 {
00191   /* Allow room for all currencies, plus a terminator entry */
00192   static StringID names[NUM_CURRENCY + 1];
00193   uint i;
00194 
00195   /* Add each name */
00196   for (i = 0; i < NUM_CURRENCY; i++) {
00197     names[i] = _currency_specs[i].name;
00198   }
00199   /* Terminate the list */
00200   names[i] = INVALID_STRING_ID;
00201 
00202   return names;
00203 }

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