src/currency.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file currency.h Functions to handle different currencies. */
  11
  12 #ifndef CURRENCY_H
  13 #define CURRENCY_H
  14
  15 #include "date_type.h"
  16 #include "strings_type.h"
  17
  18 static const int CF_NOEURO = 0; ///< Currency never switches to the Euro (as far as known).
  19 static const int CF_ISEURO = 1; ///< Currency _is_ the Euro.
  20
  21 /**
  22  * This enum gives the currencies a unique id which must be maintained for
  23  * savegame compatibility and in order to refer to them quickly, especially
  24  * for referencing the custom one.
  25  */
  26 enum Currencies {
  27         CURRENCY_GBP,       ///< British Pound
  28         CURRENCY_USD,       ///< US Dollar
  29         CURRENCY_EUR,       ///< Euro
  30         CURRENCY_JPY,       ///< Japanese Yen
  31         CURRENCY_ATS,       ///< Austrian Schilling
  32         CURRENCY_BEF,       ///< Belgian Franc
  33         CURRENCY_CHF,       ///< Swiss Franc
  34         CURRENCY_CZK,       ///< Czech Koruna
  35         CURRENCY_DEM,       ///< Deutsche Mark
  36         CURRENCY_DKK,       ///< Danish Krona
  37         CURRENCY_ESP,       ///< Spanish Peseta
  38         CURRENCY_FIM,       ///< Finish Markka
  39         CURRENCY_FRF,       ///< French Franc
  40         CURRENCY_GRD,       ///< Greek Drachma
  41         CURRENCY_HUF,       ///< Hungarian Forint
  42         CURRENCY_ISK,       ///< Icelandic Krona
  43         CURRENCY_ITL,       ///< Italian Lira
  44         CURRENCY_NLG,       ///< Dutch Gulden
  45         CURRENCY_NOK,       ///< Norwegian Krone
  46         CURRENCY_PLN,       ///< Polish Zloty
  47         CURRENCY_RON,       ///< Romenian Leu
  48         CURRENCY_RUR,       ///< Russian Rouble
  49         CURRENCY_SIT,       ///< Slovenian Tolar
  50         CURRENCY_SEK,       ///< Swedish Krona
  51         CURRENCY_YTL,       ///< Turkish Lira
  52         CURRENCY_SKK,       ///< Slovak Kornuna
  53         CURRENCY_BRL,       ///< Brazilian Real
  54         CURRENCY_EEK,       ///< Estonian Krooni
  55         CURRENCY_LTL,       ///< Lithuanian Litas
  56         CURRENCY_KRW,       ///< South Korean Won
  57         CURRENCY_ZAR,       ///< South African Rand
  58         CURRENCY_CUSTOM,    ///< Custom currency
  59         CURRENCY_GEL,       ///< Georgian Lari
  60         CURRENCY_IRR,       ///< Iranian Rial
  61         CURRENCY_END,       ///< always the last item
  62 };
  63
  64 /** Specification of a currency. */
  65 struct CurrencySpec {
  66         uint16 rate;
  67         char separator[8];
  68         Year to_euro;      ///< %Year of switching to the Euro. May also be #CF_NOEURO or #CF_ISEURO.
  69         char prefix[16];
  70         char suffix[16];
  71         /**
  72          * The currency symbol is represented by two possible values, prefix and suffix
  73          * Usage of one or the other is determined by #symbol_pos.
  74          * 0 = prefix
  75          * 1 = suffix
  76          * 2 = both : Special case only for custom currency.
  77          *            It is not a spec from Newgrf,
  78          *            rather a way to let users do what they want with custom currency
  79          */
  80         byte symbol_pos;
  81         StringID name;
  82 };
  83
  84 extern CurrencySpec _currency_specs[CURRENCY_END];
  85
  86 /* XXX small hack, but makes the rest of the code a bit nicer to read */
  87 #define _custom_currency (_currency_specs[CURRENCY_CUSTOM])
  88 #define _currency ((const CurrencySpec*)&_currency_specs[GetGameSettings().locale.currency])
  89
  90 uint64 GetMaskOfAllowedCurrencies();
  91 void CheckSwitchToEuro();
  92 void ResetCurrencies(bool preserve_custom = true);
  93 StringID *BuildCurrencyDropdown();
  94
  95 #endif /* CURRENCY_H */