currency.cpp

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00001 /* $Id: currency.cpp 16061 2009-04-14 21:20:03Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "currency.h"
00007 #include "news_func.h"
00008 #include "settings_type.h"
00009 #include "date_func.h"
00010 
00011 #include "table/strings.h"
00012 
00013   /*   exchange rate    prefix                      symbol_pos
00014    *   |  separator        |           postfix          |
00015    *   |   |   Euro year   |              |             | name
00016    *   |   |    |          |              |             |  | */
00017 static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
00018   {    1, ',', CF_NOEURO, "\xC2\xA3",     "",           0, STR_CURR_GBP    }, 
00019   {    2, ',', CF_NOEURO, "$",            "",           0, STR_CURR_USD    }, 
00020   {    2, ',', CF_ISEURO, "\xE2\x82\xAC", "",           0, STR_CURR_EUR    }, 
00021   {  220, ',', CF_NOEURO, "\xC2\xA5",     "",           0, STR_CURR_YEN    }, 
00022   {   20, ',', 2002,      "",             " S.",        1, STR_CURR_ATS    }, 
00023   {   59, ',', 2002,      "BEF ",         "",           0, STR_CURR_BEF    }, 
00024   {    2, ',', CF_NOEURO, "CHF ",         "",           0, STR_CURR_CHF    }, 
00025   {   41, ',', CF_NOEURO, "",             " K\xC4\x8D", 1, STR_CURR_CZK    }, 
00026   {    3, '.', 2002,      "DM ",          "",           0, STR_CURR_DEM    }, 
00027   {   11, '.', CF_NOEURO, "",             " kr",        1, STR_CURR_DKK    }, 
00028   {  245, '.', 2002,      "Pts ",         "",           0, STR_CURR_ESP    }, 
00029   {    9, ',', 2002,      "",             " mk",        1, STR_CURR_FIM    }, 
00030   {   10, '.', 2002,      "FF ",          "",           0, STR_CURR_FRF    }, 
00031   {  500, ',', 2002,      "",             "Dr.",        1, STR_CURR_GRD    }, 
00032   {  378, ',', CF_NOEURO, "",             " Ft",        1, STR_CURR_HUF    }, 
00033   {  130, '.', CF_NOEURO, "",             " Kr",        1, STR_CURR_ISK    }, 
00034   { 2850, ',', 2002,      "",             " L.",        1, STR_CURR_ITL    }, 
00035   {    3, ',', 2002,      "NLG ",         "",           0, STR_CURR_NLG    }, 
00036   {   12, '.', CF_NOEURO, "",             " Kr",        1, STR_CURR_NOK    }, 
00037   {    6, ' ', CF_NOEURO, "",             " zl",        1, STR_CURR_PLN    }, 
00038   {    5, '.', CF_NOEURO, "",             " Lei",       1, STR_CURR_RON    }, 
00039   {   50, ' ', CF_NOEURO, "",             " p",         1, STR_CURR_RUR    }, 
00040   {  352, '.', 2007,      "",             " SIT",       1, STR_CURR_SIT    }, 
00041   {   13, '.', CF_NOEURO, "",             " Kr",        1, STR_CURR_SEK    }, 
00042   {    3, '.', CF_NOEURO, "",             " TL",        1, STR_CURR_TRY    }, 
00043   {   52, ',', 2009,      "",             " Sk",        1, STR_CURR_SKK    }, 
00044   {    4, ',', CF_NOEURO, "R$ ",          "",           0, STR_CURR_BRL    }, 
00045   {   20, '.', CF_NOEURO, "",             " EEK",       1, STR_CURR_EEK    }, 
00046   {    1, ' ', CF_NOEURO, "",             "",           2, STR_CURR_CUSTOM }, 
00047 };
00048 
00049 /* Array of currencies used by the system */
00050 CurrencySpec _currency_specs[NUM_CURRENCY];
00051 
00058 enum {
00059   CURR_GBP,
00060   CURR_USD,
00061   CURR_EUR,
00062   CURR_YEN,
00063   CURR_ATS,
00064   CURR_BEF,
00065   CURR_CHF,
00066   CURR_CZK,
00067   CURR_DEM,
00068   CURR_DKK,
00069   CURR_ESP,
00070   CURR_FIM,
00071   CURR_FRF,
00072   CURR_GRD,
00073   CURR_HUF,
00074   CURR_ISK,
00075   CURR_ITL,
00076   CURR_NLG,
00077   CURR_NOK,
00078   CURR_PLN,
00079   CURR_RON,
00080   CURR_RUR,
00081   CURR_SIT,
00082   CURR_SEK,
00083   CURR_YTL,
00084   CURR_SKK,
00085   CURR_BRL,
00086   CURR_EEK,
00087 };
00088 
00095 const byte TTDPatch_To_OTTDIndex[] =
00096 {
00097   CURR_GBP,
00098   CURR_USD,
00099   CURR_FRF,
00100   CURR_DEM,
00101   CURR_YEN,
00102   CURR_ESP,
00103   CURR_HUF,
00104   CURR_PLN,
00105   CURR_ATS,
00106   CURR_BEF,
00107   CURR_DKK,
00108   CURR_FIM,
00109   CURR_GRD,
00110   CURR_CHF,
00111   CURR_NLG,
00112   CURR_ITL,
00113   CURR_SEK,
00114   CURR_RUR,
00115   CURR_EUR,
00116 };
00117 
00126 byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
00127 {
00128   return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
00129 }
00130 
00135 uint GetMaskOfAllowedCurrencies()
00136 {
00137   uint mask = 0;
00138   uint i;
00139 
00140   for (i = 0; i < NUM_CURRENCY; i++) {
00141     Year to_euro = _currency_specs[i].to_euro;
00142 
00143     if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
00144     if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
00145     mask |= (1 << i);
00146   }
00147   mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency
00148   return mask;
00149 }
00150 
00154 void CheckSwitchToEuro()
00155 {
00156   if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
00157       _currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
00158       _cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
00159     _settings_game.locale.currency = 2; // this is the index of euro above.
00160     AddNewsItem(STR_EURO_INTRODUCE, NS_ECONOMY, 0, 0);
00161   }
00162 }
00163 
00173 void ResetCurrencies(bool preserve_custom)
00174 {
00175   memcpy(&_currency_specs, &origin_currency_specs, sizeof(origin_currency_specs) - (preserve_custom ? sizeof(_custom_currency) : 0));
00176 }
00177 
00182 StringID *BuildCurrencyDropdown()
00183 {
00184   /* Allow room for all currencies, plus a terminator entry */
00185   static StringID names[NUM_CURRENCY + 1];
00186   uint i;
00187 
00188   /* Add each name */
00189   for (i = 0; i < NUM_CURRENCY; i++) {
00190     names[i] = _currency_specs[i].name;
00191   }
00192   /* Terminate the list */
00193   names[i] = INVALID_STRING_ID;
00194 
00195   return names;
00196 }

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