currency.cpp

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00001 /* $Id$ */
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 #include "string_type.h"
00018 
00019 #include "table/strings.h"
00020 
00021   /*   exchange rate    prefix                         symbol_pos
00022    *   |  separator        |           postfix             |
00023    *   |   |   Euro year   |              |                | name
00024    *   |   |    |          |              |                |  | */
00026 static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
00027   {    1, "", CF_NOEURO, "\xC2\xA3",     "",               0, STR_GAME_OPTIONS_CURRENCY_GBP    }, 
00028   {    2, "", CF_NOEURO, "$",            "",               0, STR_GAME_OPTIONS_CURRENCY_USD    }, 
00029   {    2, "", CF_ISEURO, "\xE2\x82\xAC", "",               0, STR_GAME_OPTIONS_CURRENCY_EUR    }, 
00030   {  220, "", CF_NOEURO, "\xC2\xA5",     "",               0, STR_GAME_OPTIONS_CURRENCY_JPY    }, 
00031   {   27, "", 2002,      "",             NBSP "S.",        1, STR_GAME_OPTIONS_CURRENCY_ATS    }, 
00032   {   81, "", 2002,      "BEF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_BEF    }, 
00033   {    2, "", CF_NOEURO, "CHF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_CHF    }, 
00034   {   41, "", CF_NOEURO, "",             NBSP "K\xC4\x8D", 1, STR_GAME_OPTIONS_CURRENCY_CZK    }, 
00035   {    4, "", 2002,      "DM" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_DEM    }, 
00036   {   11, "", CF_NOEURO, "",             NBSP "kr",        1, STR_GAME_OPTIONS_CURRENCY_DKK    }, 
00037   {  333, "", 2002,      "Pts" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_ESP    }, 
00038   {   12, "", 2002,      "",             NBSP "mk",        1, STR_GAME_OPTIONS_CURRENCY_FIM    }, 
00039   {   13, "", 2002,      "FF" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_FRF    }, 
00040   {  681, "", 2002,      "",             "Dr.",            1, STR_GAME_OPTIONS_CURRENCY_GRD    }, 
00041   {  378, "", CF_NOEURO, "",             NBSP "Ft",        1, STR_GAME_OPTIONS_CURRENCY_HUF    }, 
00042   {  130, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_ISK    }, 
00043   { 3873, "", 2002,      "",             NBSP "L.",        1, STR_GAME_OPTIONS_CURRENCY_ITL    }, 
00044   {    4, "", 2002,      "NLG" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_NLG    }, 
00045   {   12, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_NOK    }, 
00046   {    6, "", CF_NOEURO, "",             NBSP "z\xC5\x82", 1, STR_GAME_OPTIONS_CURRENCY_PLN    }, 
00047   {    5, "", CF_NOEURO, "",             NBSP "Lei",       1, STR_GAME_OPTIONS_CURRENCY_RON    }, 
00048   {   50, "", CF_NOEURO, "",             NBSP "p",         1, STR_GAME_OPTIONS_CURRENCY_RUR    }, 
00049   {  479, "", 2007,      "",             NBSP "SIT",       1, STR_GAME_OPTIONS_CURRENCY_SIT    }, 
00050   {   13, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_SEK    }, 
00051   {    3, "", CF_NOEURO, "",             NBSP "TL",        1, STR_GAME_OPTIONS_CURRENCY_TRY    }, 
00052   {   60, "", 2009,      "",             NBSP "Sk",        1, STR_GAME_OPTIONS_CURRENCY_SKK    }, 
00053   {    4, "", CF_NOEURO, "R$" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_BRL    }, 
00054   {   31, "", 2011,      "",             NBSP "EEK",       1, STR_GAME_OPTIONS_CURRENCY_EEK    }, 
00055   {    4, "", 2014,      "",             NBSP "Lt",        1, STR_GAME_OPTIONS_CURRENCY_LTL    }, 
00056   { 1850, "", CF_NOEURO, "\xE2\x82\xA9", "",               0, STR_GAME_OPTIONS_CURRENCY_KRW    }, 
00057   {   13, "", CF_NOEURO, "R" NBSP,       "",               0, STR_GAME_OPTIONS_CURRENCY_ZAR    }, 
00058   {    1, "", CF_NOEURO, "",             "",               2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, 
00059 };
00060 
00062 CurrencySpec _currency_specs[NUM_CURRENCY];
00063 
00070 enum Currencies {
00071   CURR_GBP,
00072   CURR_USD,
00073   CURR_EUR,
00074   CURR_JPY,
00075   CURR_ATS,
00076   CURR_BEF,
00077   CURR_CHF,
00078   CURR_CZK,
00079   CURR_DEM,
00080   CURR_DKK,
00081   CURR_ESP,
00082   CURR_FIM,
00083   CURR_FRF,
00084   CURR_GRD,
00085   CURR_HUF,
00086   CURR_ISK,
00087   CURR_ITL,
00088   CURR_NLG,
00089   CURR_NOK,
00090   CURR_PLN,
00091   CURR_RON,
00092   CURR_RUR,
00093   CURR_SIT,
00094   CURR_SEK,
00095   CURR_YTL,
00096   CURR_SKK,
00097   CURR_BRL,
00098   CURR_EEK,
00099   CURR_LTL,
00100 };
00101 
00108 const byte TTDPatch_To_OTTDIndex[] =
00109 {
00110   CURR_GBP,
00111   CURR_USD,
00112   CURR_FRF,
00113   CURR_DEM,
00114   CURR_JPY,
00115   CURR_ESP,
00116   CURR_HUF,
00117   CURR_PLN,
00118   CURR_ATS,
00119   CURR_BEF,
00120   CURR_DKK,
00121   CURR_FIM,
00122   CURR_GRD,
00123   CURR_CHF,
00124   CURR_NLG,
00125   CURR_ITL,
00126   CURR_SEK,
00127   CURR_RUR,
00128   CURR_EUR,
00129 };
00130 
00139 byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
00140 {
00141   return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
00142 }
00143 
00148 uint GetMaskOfAllowedCurrencies()
00149 {
00150   uint mask = 0;
00151   uint i;
00152 
00153   for (i = 0; i < NUM_CURRENCY; i++) {
00154     Year to_euro = _currency_specs[i].to_euro;
00155 
00156     if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
00157     if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
00158     mask |= (1 << i);
00159   }
00160   mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency
00161   return mask;
00162 }
00163 
00167 void CheckSwitchToEuro()
00168 {
00169   if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
00170       _currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
00171       _cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
00172     _settings_game.locale.currency = 2; // this is the index of euro above.
00173     AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NT_ECONOMY, NF_NORMAL);
00174   }
00175 }
00176 
00186 void ResetCurrencies(bool preserve_custom)
00187 {
00188   memcpy(&_currency_specs, &origin_currency_specs, sizeof(origin_currency_specs) - (preserve_custom ? sizeof(_custom_currency) : 0));
00189 }
00190 
00195 StringID *BuildCurrencyDropdown()
00196 {
00197   /* Allow room for all currencies, plus a terminator entry */
00198   static StringID names[NUM_CURRENCY + 1];
00199   uint i;
00200 
00201   /* Add each name */
00202   for (i = 0; i < NUM_CURRENCY; i++) {
00203     names[i] = _currency_specs[i].name;
00204   }
00205   /* Terminate the list */
00206   names[i] = INVALID_STRING_ID;
00207 
00208   return names;
00209 }