(svn r25072) -Codechange: Don't require the custom currency to be the last defined one

6 files changed, 77 insertions, 78 deletions

diff --git a/src/currency.cpp b/src/currency.cpp
index 44cd6dd01..bae5f08d1 100644
--- a/src/currency.cpp
+++ b/src/currency.cpp
@@ -23,7 +23,7 @@
 	 *   |   |   Euro year   |              |                | name
 	 *   |   |    |          |              |                |  | */
 /** The original currency specifications. */
-static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
+static const CurrencySpec origin_currency_specs[CURRENCY_END] = {
 	{    1, "", CF_NOEURO, "\xC2\xA3",     "",               0, STR_GAME_OPTIONS_CURRENCY_GBP    }, ///< british pound
 	{    2, "", CF_NOEURO, "$",            "",               0, STR_GAME_OPTIONS_CURRENCY_USD    }, ///< american dollar
 	{    2, "", CF_ISEURO, "\xE2\x82\xAC", "",               0, STR_GAME_OPTIONS_CURRENCY_EUR    }, ///< euro
@@ -55,49 +55,11 @@ static const CurrencySpec origin_currency_specs[NUM_CURRENCY] = {
 	{    4, "", 2014,      "",             NBSP "Lt",        1, STR_GAME_OPTIONS_CURRENCY_LTL    }, ///< lithuanian litas
 	{ 1850, "", CF_NOEURO, "\xE2\x82\xA9", "",               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
+	{    1, "", CF_NOEURO, "",             "",               2, STR_GAME_OPTIONS_CURRENCY_CUSTOM }, ///< custom currency (add further languages below)
 };
 
 /** Array of currencies used by the system */
-CurrencySpec _currency_specs[NUM_CURRENCY];
-
-/**
- * These enums are only declared in order to make sense
- * out of the TTDPatch_To_OTTDIndex array that will follow
- * Every currency used by Ottd is there, just in case TTDPatch will
- * add those missing in its code
- */
-enum Currencies {
-	CURR_GBP,
-	CURR_USD,
-	CURR_EUR,
-	CURR_JPY,
-	CURR_ATS,
-	CURR_BEF,
-	CURR_CHF,
-	CURR_CZK,
-	CURR_DEM,
-	CURR_DKK,
-	CURR_ESP,
-	CURR_FIM,
-	CURR_FRF,
-	CURR_GRD,
-	CURR_HUF,
-	CURR_ISK,
-	CURR_ITL,
-	CURR_NLG,
-	CURR_NOK,
-	CURR_PLN,
-	CURR_RON,
-	CURR_RUR,
-	CURR_SIT,
-	CURR_SEK,
-	CURR_YTL,
-	CURR_SKK,
-	CURR_BRL,
-	CURR_EEK,
-	CURR_LTL,
-};
+CurrencySpec _currency_specs[CURRENCY_END];
 
 /**
  * This array represent the position of OpenTTD's currencies,
@@ -107,25 +69,25 @@ enum Currencies {
  */
 const byte TTDPatch_To_OTTDIndex[] =
 {
-	CURR_GBP,
-	CURR_USD,
-	CURR_FRF,
-	CURR_DEM,
-	CURR_JPY,
-	CURR_ESP,
-	CURR_HUF,
-	CURR_PLN,
-	CURR_ATS,
-	CURR_BEF,
-	CURR_DKK,
-	CURR_FIM,
-	CURR_GRD,
-	CURR_CHF,
-	CURR_NLG,
-	CURR_ITL,
-	CURR_SEK,
-	CURR_RUR,
-	CURR_EUR,
+	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,
 };
 
 /**
@@ -150,14 +112,14 @@ uint GetMaskOfAllowedCurrencies()
 	uint mask = 0;
 	uint i;
 
-	for (i = 0; i < NUM_CURRENCY; 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;
 		mask |= (1 << i);
 	}
-	mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency
+	mask |= (1 << CURRENCY_CUSTOM); // always allow custom currency
 	return mask;
 }
 
@@ -195,11 +157,11 @@ void ResetCurrencies(bool preserve_custom)
 StringID *BuildCurrencyDropdown()
 {
 	/* Allow room for all currencies, plus a terminator entry */
-	static StringID names[NUM_CURRENCY + 1];
+	static StringID names[CURRENCY_END + 1];
 	uint i;
 
 	/* Add each name */
-	for (i = 0; i < NUM_CURRENCY; i++) {
+	for (i = 0; i < CURRENCY_END; i++) {
 		names[i] = _currency_specs[i].name;
 	}
 	/* Terminate the list */
diff --git a/src/currency.h b/src/currency.h
index 40a110968..586b6197c 100644
--- a/src/currency.h
+++ b/src/currency.h
@@ -17,8 +17,46 @@
 
 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 = 32; ///< Number of currencies.
-static const int CUSTOM_CURRENCY_ID = NUM_CURRENCY - 1; ///< Index of the custom currency.
+
+/**
+ * This enum gives the currencies a unique id in order to refer
+ * quickly to them, especially the custom one. And to ensure
+ */
+enum Currencies {
+	CURRENCY_GBP,       ///< British Pound
+	CURRENCY_USD,       ///< US Dollar
+	CURRENCY_EUR,       ///< Euro
+	CURRENCY_JPY,       ///< Japanese Yen
+	CURRENCY_ATS,       ///< Austrian Schilling
+	CURRENCY_BEF,       ///< Belgian Franc
+	CURRENCY_CHF,       ///< Swiss Franc
+	CURRENCY_CZK,       ///< Czech Koruna
+	CURRENCY_DEM,       ///< Deutsche Mark
+	CURRENCY_DKK,       ///< Danish Krona
+	CURRENCY_ESP,       ///< Spanish Peseta
+	CURRENCY_FIM,       ///< Finish Markka
+	CURRENCY_FRF,       ///< French Franc
+	CURRENCY_GRD,       ///< Greek Drachma
+	CURRENCY_HUF,       ///< Hungarian Forint
+	CURRENCY_ISK,       ///< Icelandic Krona
+	CURRENCY_ITL,       ///< Italian Lira
+	CURRENCY_NLG,       ///< Dutch Gulden
+	CURRENCY_NOK,       ///< Norwegian Krone
+	CURRENCY_PLN,       ///< Polish Zloty
+	CURRENCY_RON,       ///< Romenian Leu
+	CURRENCY_RUR,       ///< Russian Rouble
+	CURRENCY_SIT,       ///< Slovenian Tolar
+	CURRENCY_SEK,       ///< Swedish Krona
+	CURRENCY_YTL,       ///< Turkish Lira
+	CURRENCY_SKK,       ///< Slovak Kornuna
+	CURRENCY_BRL,       ///< Brazilian Real
+	CURRENCY_EEK,       ///< Estonian Krooni
+	CURRENCY_LTL,       ///< Lithuanian Litas
+	CURRENCY_KRW,       ///< South Korean Won
+	CURRENCY_ZAR,       ///< South African Rand
+	CURRENCY_CUSTOM,    ///< Custom currency
+	CURRENCY_END,       ///< always the last item
+};
 
 /** Specification of a currency. */
 struct CurrencySpec {
@@ -40,11 +78,10 @@ struct CurrencySpec {
 	StringID name;
 };
 
-
-extern CurrencySpec _currency_specs[NUM_CURRENCY];
+extern CurrencySpec _currency_specs[CURRENCY_END];
 
 /* XXX small hack, but makes the rest of the code a bit nicer to read */
-#define _custom_currency (_currency_specs[CUSTOM_CURRENCY_ID])
+#define _custom_currency (_currency_specs[CURRENCY_CUSTOM])
 #define _currency ((const CurrencySpec*)&_currency_specs[GetGameSettings().locale.currency])
 
 uint GetMaskOfAllowedCurrencies();
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index a1dfd7917..f56b99899 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -2487,7 +2487,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				StringID newone = GetGRFStringID(_cur.grffile->grfid, buf->ReadWord());
 
-				if ((newone != STR_UNDEFINED) && (curidx < NUM_CURRENCY)) {
+				if ((newone != STR_UNDEFINED) && (curidx < CURRENCY_END)) {
 					_currency_specs[curidx].name = newone;
 				}
 				break;
@@ -2497,7 +2497,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				uint32 rate = buf->ReadDWord();
 
-				if (curidx < NUM_CURRENCY) {
+				if (curidx < CURRENCY_END) {
 					/* TTDPatch uses a multiple of 1000 for its conversion calculations,
 					 * which OTTD does not. For this reason, divide grf value by 1000,
 					 * to be compatible */
@@ -2512,7 +2512,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				uint16 options = buf->ReadWord();
 
-				if (curidx < NUM_CURRENCY) {
+				if (curidx < CURRENCY_END) {
 					_currency_specs[curidx].separator[0] = GB(options, 0, 8);
 					_currency_specs[curidx].separator[1] = '\0';
 					/* By specifying only one bit, we prevent errors,
@@ -2528,7 +2528,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				uint32 tempfix = buf->ReadDWord();
 
-				if (curidx < NUM_CURRENCY) {
+				if (curidx < CURRENCY_END) {
 					memcpy(_currency_specs[curidx].prefix, &tempfix, 4);
 					_currency_specs[curidx].prefix[4] = 0;
 				} else {
@@ -2541,7 +2541,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				uint32 tempfix = buf->ReadDWord();
 
-				if (curidx < NUM_CURRENCY) {
+				if (curidx < CURRENCY_END) {
 					memcpy(&_currency_specs[curidx].suffix, &tempfix, 4);
 					_currency_specs[curidx].suffix[4] = 0;
 				} else {
@@ -2554,7 +2554,7 @@ static ChangeInfoResult GlobalVarChangeInfo(uint gvid, int numinfo, int prop, By
 				uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
 				Year year_euro = buf->ReadWord();
 
-				if (curidx < NUM_CURRENCY) {
+				if (curidx < CURRENCY_END) {
 					_currency_specs[curidx].to_euro = year_euro;
 				} else {
 					grfmsg(1, "GlobalVarChangeInfo: Euro intro date %d out of range, ignoring", curidx);
diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
index 0b5917490..c7229430d 100644
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -496,7 +496,7 @@ struct GameOptionsWindow : Window {
 	{
 		switch (widget) {
 			case WID_GO_CURRENCY_DROPDOWN: // Currency
-				if (index == CUSTOM_CURRENCY_ID) ShowCustCurrency();
+				if (index == CURRENCY_CUSTOM) ShowCustCurrency();
 				this->opt->locale.currency = index;
 				ReInitAllWindows();
 				break;
diff --git a/src/table/gameopt_settings.ini b/src/table/gameopt_settings.ini
index 8f7861942..42f906d32 100644
--- a/src/table/gameopt_settings.ini
+++ b/src/table/gameopt_settings.ini
@@ -108,7 +108,7 @@ var      = locale.currency
 type     = SLE_UINT8
 flags    = SLF_NO_NETWORK_SYNC
 def      = 0
-max      = CUSTOM_CURRENCY_ID
+max      = CURRENCY_END - 1
 full     = _locale_currencies
 cat      = SC_BASIC
 
diff --git a/src/table/settings.ini b/src/table/settings.ini
index b39d29a54..1b26db9a0 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -2185,7 +2185,7 @@ type     = SLE_UINT8
 from     = 97
 flags    = SLF_NO_NETWORK_SYNC
 def      = 0
-max      = CUSTOM_CURRENCY_ID
+max      = CURRENCY_END - 1
 full     = _locale_currencies
 proc     = RedrawScreen
 cat      = SC_BASIC