summaryrefslogtreecommitdiff
path: root/src/currency.cpp
blob: 46c478d0d9bf54c45858fde0b70b24847413c6ef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
/*
 * 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.cpp Support for different currencies. */

#include "stdafx.h"
#include "core/bitmath_func.hpp"

#include "currency.h"
#include "news_func.h"
#include "settings_type.h"
#include "date_func.h"
#include "string_type.h"

#include "table/strings.h"

#include "safeguards.h"

	/*   exchange rate    prefix                         symbol_pos
	 *   |  separator        |           postfix             |
	 *   |   |   Euro year   |              |                | name
	 *   |   |    |          |              |                |  | */
/** The original currency specifications. */
static const CurrencySpec origin_currency_specs[CURRENCY_END] = {
	{    1, "", CF_NOEURO, u8"\u00a3",     "",               0, STR_GAME_OPTIONS_CURRENCY_GBP    }, ///< british pound
	{    2, "", CF_NOEURO, "$",            "",               0, STR_GAME_OPTIONS_CURRENCY_USD    }, ///< american dollar
	{    2, "", CF_ISEURO, u8"\u20ac",     "",               0, STR_GAME_OPTIONS_CURRENCY_EUR    }, ///< euro
	{  220, "", CF_NOEURO, u8"\u00a5",     "",               0, STR_GAME_OPTIONS_CURRENCY_JPY    }, ///< japanese yen
	{   27, "", 2002,      "",             NBSP "S.",        1, STR_GAME_OPTIONS_CURRENCY_ATS    }, ///< austrian schilling
	{   81, "", 2002,      "BEF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_BEF    }, ///< belgian franc
	{    2, "", CF_NOEURO, "CHF" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_CHF    }, ///< swiss franc
	{   41, "", CF_NOEURO, "",             NBSP u8"K\u010d", 1, STR_GAME_OPTIONS_CURRENCY_CZK    }, ///< czech koruna
	{    4, "", 2002,      "DM" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_DEM    }, ///< deutsche mark
	{   11, "", CF_NOEURO, "",             NBSP "kr",        1, STR_GAME_OPTIONS_CURRENCY_DKK    }, ///< danish krone
	{  333, "", 2002,      "Pts" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_ESP    }, ///< spanish peseta
	{   12, "", 2002,      "",             NBSP "mk",        1, STR_GAME_OPTIONS_CURRENCY_FIM    }, ///< finnish markka
	{   13, "", 2002,      "FF" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_FRF    }, ///< french franc
	{  681, "", 2002,      "",             "Dr.",            1, STR_GAME_OPTIONS_CURRENCY_GRD    }, ///< greek drachma
	{  378, "", CF_NOEURO, "",             NBSP "Ft",        1, STR_GAME_OPTIONS_CURRENCY_HUF    }, ///< hungarian forint
	{  130, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_ISK    }, ///< icelandic krona
	{ 3873, "", 2002,      "",             NBSP "L.",        1, STR_GAME_OPTIONS_CURRENCY_ITL    }, ///< italian lira
	{    4, "", 2002,      "NLG" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_NLG    }, ///< dutch gulden
	{   12, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_NOK    }, ///< norwegian krone
	{    6, "", CF_NOEURO, "",             NBSP u8"z\u0142", 1, STR_GAME_OPTIONS_CURRENCY_PLN    }, ///< polish zloty
	{    5, "", CF_NOEURO, "",             NBSP "Lei",       1, STR_GAME_OPTIONS_CURRENCY_RON    }, ///< romanian leu
	{   50, "", CF_NOEURO, "",             NBSP "p",         1, STR_GAME_OPTIONS_CURRENCY_RUR    }, ///< russian rouble
	{  479, "", 2007,      "",             NBSP "SIT",       1, STR_GAME_OPTIONS_CURRENCY_SIT    }, ///< slovenian tolar
	{   13, "", CF_NOEURO, "",             NBSP "Kr",        1, STR_GAME_OPTIONS_CURRENCY_SEK    }, ///< swedish krona
	{    3, "", CF_NOEURO, "",             NBSP "TL",        1, STR_GAME_OPTIONS_CURRENCY_TRY    }, ///< turkish lira
	{   60, "", 2009,      "",             NBSP "Sk",        1, STR_GAME_OPTIONS_CURRENCY_SKK    }, ///< slovak koruna
	{    4, "", CF_NOEURO, "R$" NBSP,      "",               0, STR_GAME_OPTIONS_CURRENCY_BRL    }, ///< brazil real
	{   31, "", 2011,      "",             NBSP "EEK",       1, STR_GAME_OPTIONS_CURRENCY_EEK    }, ///< estonian krooni
	{    4, "", 2015,      "",             NBSP "Lt",        1, STR_GAME_OPTIONS_CURRENCY_LTL    }, ///< lithuanian litas
	{ 1850, "", CF_NOEURO, u8"\u20a9",     "",               0, STR_GAME_OPTIONS_CURRENCY_KRW    }, ///< south korean won
	{   13, "", CF_NOEURO, "R" NBSP,       "",               0, STR_GAME_OPTIONS_CURRENCY_ZAR    }, ///< south african rand
	{    1, "", CF_NOEURO, "",             "",               2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, ///< custom currency (add further languages below)
	{    3, "", CF_NOEURO, "",             NBSP "GEL",       1, STR_GAME_OPTIONS_CURRENCY_GEL    }, ///< Georgian Lari
	{ 4901, "", CF_NOEURO, "",             NBSP "Rls",       1, STR_GAME_OPTIONS_CURRENCY_IRR    }, ///< Iranian Rial
	{   80, "", CF_NOEURO, "",             NBSP "rub",       1, STR_GAME_OPTIONS_CURRENCY_RUB    }, ///< New Russian Ruble
	{   24, "", CF_NOEURO, "$",            "",               0, STR_GAME_OPTIONS_CURRENCY_MXN    }, ///< Mexican peso
	{   40, "", CF_NOEURO, "NTD" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_NTD    }, ///< new taiwan dollar
	{    8, "", CF_NOEURO, u8"\u00a5",     "",               0, STR_GAME_OPTIONS_CURRENCY_CNY    }, ///< chinese renminbi
	{   10, "", CF_NOEURO, "HKD" NBSP,     "",               0, STR_GAME_OPTIONS_CURRENCY_HKD    }, ///< hong kong dollar
	{   90, "", CF_NOEURO, u8"\u20b9",     "",               0, STR_GAME_OPTIONS_CURRENCY_INR    }, ///< Indian Rupee
	{   19, "", CF_NOEURO, "Rp",           "",               0, STR_GAME_OPTIONS_CURRENCY_IDR    }, ///< Indonesian Rupiah
};

/** Array of currencies used by the system */
CurrencySpec _currency_specs[CURRENCY_END];

/**
 * This array represent the position of OpenTTD's currencies,
 * compared to TTDPatch's ones.
 * When a grf sends currencies, they are based on the order defined by TTDPatch.
 * So, we must reindex them to our own order.
 */
const byte TTDPatch_To_OTTDIndex[] =
{
	CURRENCY_GBP,
	CURRENCY_USD,
	CURRENCY_FRF,
	CURRENCY_DEM,
	CURRENCY_JPY,
	CURRENCY_ESP,
	CURRENCY_HUF,
	CURRENCY_PLN,
	CURRENCY_ATS,
	CURRENCY_BEF,
	CURRENCY_DKK,
	CURRENCY_FIM,
	CURRENCY_GRD,
	CURRENCY_CHF,
	CURRENCY_NLG,
	CURRENCY_ITL,
	CURRENCY_SEK,
	CURRENCY_RUR,
	CURRENCY_EUR,
};

/**
 * Will return the ottd's index correspondence to
 * the ttdpatch's id.  If the id is bigger than the array,
 * it is a grf written for ottd, thus returning the same id.
 * Only called from newgrf.cpp
 * @param grfcurr_id currency id coming from newgrf
 * @return the corrected index
 */
byte GetNewgrfCurrencyIdConverted(byte grfcurr_id)
{
	return (grfcurr_id >= lengthof(TTDPatch_To_OTTDIndex)) ? grfcurr_id : TTDPatch_To_OTTDIndex[grfcurr_id];
}

/**
 * get a mask of the allowed currencies depending on the year
 * @return mask of currencies
 */
uint64 GetMaskOfAllowedCurrencies()
{
	uint64 mask = 0LL;
	uint i;

	for (i = 0; i < CURRENCY_END; i++) {
		Year to_euro = _currency_specs[i].to_euro;

		if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro) continue;
		if (to_euro == CF_ISEURO && _cur_year < 2000) continue;
		SetBit(mask, i);
	}
	SetBit(mask, CURRENCY_CUSTOM); // always allow custom currency
	return mask;
}

/**
 * Verify if the currency chosen by the user is about to be converted to Euro
 */
void CheckSwitchToEuro()
{
	if (_currency_specs[_settings_game.locale.currency].to_euro != CF_NOEURO &&
			_currency_specs[_settings_game.locale.currency].to_euro != CF_ISEURO &&
			_cur_year >= _currency_specs[_settings_game.locale.currency].to_euro) {
		_settings_game.locale.currency = 2; // this is the index of euro above.
		AddNewsItem(STR_NEWS_EURO_INTRODUCTION, NT_ECONOMY, NF_NORMAL);
	}
}

/**
 * Will fill _currency_specs array with
 * default values from origin_currency_specs
 * Called only from newgrf.cpp and settings.cpp.
 * @param preserve_custom will not reset custom currency
 */
void ResetCurrencies(bool preserve_custom)
{
	for (uint i = 0; i < CURRENCY_END; i++) {
		if (preserve_custom && i == CURRENCY_CUSTOM) continue;
		_currency_specs[i] = origin_currency_specs[i];
	}
}

/**
 * Build a list of currency names StringIDs to use in a dropdown list
 * @return Pointer to a (static) array of StringIDs
 */
StringID *BuildCurrencyDropdown()
{
	/* Allow room for all currencies, plus a terminator entry */
	static StringID names[CURRENCY_END + 1];
	uint i;

	/* Add each name */
	for (i = 0; i < CURRENCY_END; i++) {
		names[i] = _currency_specs[i].name;
	}
	/* Terminate the list */
	names[i] = INVALID_STRING_ID;

	return names;
}