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/* $Id$ */
/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file currency.h Functions to handle different currencies. */
#ifndef CURRENCY_H
#define CURRENCY_H
#include "date_type.h"
#include "strings_type.h"
static const int CF_NOEURO = 0; ///< Currency never switches to the Euro (as far as known).
static const int CF_ISEURO = 1; ///< Currency _is_ the Euro.
static const uint NUM_CURRENCY = 29; ///< Number of currencies.
static const int CUSTOM_CURRENCY_ID = NUM_CURRENCY - 1; ///< Index of the custom currency.
/** Specification of a currency. */
struct CurrencySpec {
uint16 rate;
char separator[8];
Year to_euro; ///< %Year of switching to the Euro. May also be #CF_NOEURO or #CF_ISEURO.
char prefix[16];
char suffix[16];
/**
* The currency symbol is represented by two possible values, prefix and suffix
* Usage of one or the other is determined by #symbol_pos.
* 0 = prefix
* 1 = suffix
* 2 = both : Special case only for custom currency.
* It is not a spec from Newgrf,
* rather a way to let users do what they want with custom currency
*/
byte symbol_pos;
StringID name;
};
extern CurrencySpec _currency_specs[NUM_CURRENCY];
/* XXX small hack, but makes the rest of the code a bit nicer to read */
#define _custom_currency (_currency_specs[CUSTOM_CURRENCY_ID])
#define _currency ((const CurrencySpec*)&_currency_specs[GetGameSettings().locale.currency])
uint GetMaskOfAllowedCurrencies();
void CheckSwitchToEuro();
void ResetCurrencies(bool preserve_custom = true);
StringID *BuildCurrencyDropdown();
byte GetNewgrfCurrencyIdConverted(byte grfcurr_id);
#endif /* CURRENCY_H */
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