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/* $Id$ */

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/** @file settings_gui.cpp GUI for settings. */

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#include "stdafx.h"

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#include "openttd.h"

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#include "currency.h"

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#include "gui.h"

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#include "window_gui.h"

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#include "textbuf_gui.h"

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#include "command_func.h"

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#include "engine_func.h"

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#include "screenshot.h"

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#include "newgrf.h"

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#include "network/network.h"

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#include "town.h"

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#include "variables.h"

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#include "settings_internal.h"

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#include "newgrf_townname.h"

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#include "strings_func.h"

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#include "functions.h"

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#include "window_func.h"

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#include "core/alloc_func.hpp"

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#include "string_func.h"

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#include "gfx_func.h"

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#include "waypoint.h"

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#include "widgets/dropdown_type.h"

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#include "widgets/dropdown_func.h"

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#include "station_func.h"

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#include "table/sprites.h"

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#include "table/strings.h"

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static const StringID _units_dropdown[] = {

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	STR_UNITS_IMPERIAL,

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	STR_UNITS_METRIC,

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	STR_UNITS_SI,

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	INVALID_STRING_ID

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};

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static const StringID _driveside_dropdown[] = {

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	STR_02E9_DRIVE_ON_LEFT,

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	STR_02EA_DRIVE_ON_RIGHT,

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	INVALID_STRING_ID

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};

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static const StringID _autosave_dropdown[] = {

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	STR_02F7_OFF,

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	STR_AUTOSAVE_1_MONTH,

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	STR_02F8_EVERY_3_MONTHS,

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	STR_02F9_EVERY_6_MONTHS,

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	STR_02FA_EVERY_12_MONTHS,

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	INVALID_STRING_ID,

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};

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static const StringID _designnames_dropdown[] = {

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	STR_02BE_DEFAULT,

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	STR_02BF_CUSTOM,

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	INVALID_STRING_ID

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};

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static StringID *BuildDynamicDropdown(StringID base, int num)

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{

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	static StringID buf[32 + 1];

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	StringID *p = buf;

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	while (--num >= 0) *p++ = base++;

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	*p = INVALID_STRING_ID;

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	return buf;

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}

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int _nb_orig_names = SPECSTR_TOWNNAME_LAST - SPECSTR_TOWNNAME_START + 1;

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static StringID *_grf_names = NULL;

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static int _nb_grf_names = 0;

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void InitGRFTownGeneratorNames()

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{

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	free(_grf_names);

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	_grf_names = GetGRFTownNameList();

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	_nb_grf_names = 0;

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	for (StringID *s = _grf_names; *s != INVALID_STRING_ID; s++) _nb_grf_names++;

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}

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static inline StringID TownName(int town_name)

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{

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	if (town_name < _nb_orig_names) return STR_TOWNNAME_ORIGINAL_ENGLISH + town_name;

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	town_name -= _nb_orig_names;

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	if (town_name < _nb_grf_names) return _grf_names[town_name];

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	return STR_UNDEFINED;

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}

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static int GetCurRes()

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{

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	int i;

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	for (i = 0; i != _num_resolutions; i++) {

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		if (_resolutions[i][0] == _screen.width &&

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				_resolutions[i][1] == _screen.height) {

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			break;

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		}

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	}

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	return i;

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}

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enum GameOptionsWidgets {

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	GAMEOPT_CURRENCY_BTN    =  4,

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	GAMEOPT_DISTANCE_BTN    =  6,

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	GAMEOPT_ROADSIDE_BTN    =  8,

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	GAMEOPT_TOWNNAME_BTN    = 10,

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	GAMEOPT_AUTOSAVE_BTN    = 12,

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	GAMEOPT_VEHICLENAME_BTN = 14,

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	GAMEOPT_VEHICLENAME_SAVE,

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	GAMEOPT_LANG_BTN        = 17,

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	GAMEOPT_RESOLUTION_BTN  = 19,

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	GAMEOPT_FULLSCREEN,

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	GAMEOPT_SCREENSHOT_BTN  = 22,

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};

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/**

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 * Update/redraw the townnames dropdown

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 * @param w   the window the dropdown belongs to

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 * @param sel the currently selected townname generator

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 */

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static void ShowTownnameDropdown(Window *w, int sel)

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{

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	typedef std::map<StringID, int, StringIDCompare> TownList;

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	TownList townnames;

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	/* Add and sort original townnames generators */

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	for (int i = 0; i < _nb_orig_names; i++) townnames[STR_TOWNNAME_ORIGINAL_ENGLISH + i] = i;

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	/* Add and sort newgrf townnames generators */

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	for (int i = 0; i < _nb_grf_names; i++) townnames[_grf_names[i]] = _nb_orig_names + i;

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	DropDownList *list = new DropDownList();

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	for (TownList::iterator it = townnames.begin(); it != townnames.end(); it++) {

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		list->push_back(new DropDownListStringItem((*it).first, (*it).second, !(_game_mode == GM_MENU || (*it).second == sel)));

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	}

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	ShowDropDownList(w, list, sel, GAMEOPT_TOWNNAME_BTN);

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}

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static void ShowCustCurrency();

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	}

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	}

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static const Widget _game_options_widgets[] = {

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{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,                          STR_018B_CLOSE_WINDOW},

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{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   369,     0,    13, STR_00B1_GAME_OPTIONS,             STR_018C_WINDOW_TITLE_DRAG_THIS},

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{      WWT_PANEL,   RESIZE_NONE,    14,     0,   369,    14,   238, 0x0,                               STR_NULL},

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{      WWT_FRAME,   RESIZE_NONE,    14,    10,   179,    20,    55, STR_02E0_CURRENCY_UNITS,           STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,    20,   169,    34,    45, STR_02E1,                          STR_02E2_CURRENCY_UNITS_SELECTION},

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{      WWT_FRAME,   RESIZE_NONE,    14,   190,   359,    20,    55, STR_MEASURING_UNITS,               STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,   200,   349,    34,    45, STR_02E4,                          STR_MEASURING_UNITS_SELECTION},

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{      WWT_FRAME,   RESIZE_NONE,    14,    10,   179,    62,    97, STR_02E6_ROAD_VEHICLES,            STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,    20,   169,    76,    87, STR_02E7,                          STR_02E8_SELECT_SIDE_OF_ROAD_FOR},

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{      WWT_FRAME,   RESIZE_NONE,    14,   190,   359,    62,    97, STR_02EB_TOWN_NAMES,               STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,   200,   349,    76,    87, STR_02EC,                          STR_02ED_SELECT_STYLE_OF_TOWN_NAMES},

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{      WWT_FRAME,   RESIZE_NONE,    14,    10,   179,   104,   139, STR_02F4_AUTOSAVE,                 STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,    20,   169,   118,   129, STR_02F5,                          STR_02F6_SELECT_INTERVAL_BETWEEN},

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{      WWT_FRAME,   RESIZE_NONE,    14,    10,   359,   194,   228, STR_02BC_VEHICLE_DESIGN_NAMES,     STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,    20,   119,   207,   218, STR_02BD,                          STR_02C1_VEHICLE_DESIGN_NAMES_SELECTION},

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{    WWT_TEXTBTN,   RESIZE_NONE,    14,   130,   349,   207,   218, STR_02C0_SAVE_CUSTOM_NAMES,        STR_02C2_SAVE_CUSTOMIZED_VEHICLE},

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{      WWT_FRAME,   RESIZE_NONE,    14,   190,   359,   104,   139, STR_OPTIONS_LANG,                  STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,   200,   349,   118,   129, STR_OPTIONS_LANG_CBO,              STR_OPTIONS_LANG_TIP},

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{      WWT_FRAME,   RESIZE_NONE,    14,    10,   179,   146,   190, STR_OPTIONS_RES,                   STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,    20,   169,   160,   171, STR_OPTIONS_RES_CBO,               STR_OPTIONS_RES_TIP},

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{    WWT_TEXTBTN,   RESIZE_NONE,    14,   149,   169,   176,   184, STR_EMPTY,                         STR_OPTIONS_FULLSCREEN_TIP},

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{      WWT_FRAME,   RESIZE_NONE,    14,   190,   359,   146,   190, STR_OPTIONS_SCREENSHOT_FORMAT,     STR_NULL},

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{ WWT_DROPDOWNIN,   RESIZE_NONE,    14,   200,   349,   160,   171, STR_OPTIONS_SCREENSHOT_FORMAT_CBO, STR_OPTIONS_SCREENSHOT_FORMAT_TIP},

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{   WIDGETS_END},

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};

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static const WindowDesc _game_options_desc = {

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	WDP_CENTER, WDP_CENTER, 370, 239, 370, 239,

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	WC_GAME_OPTIONS, WC_NONE,

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	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,

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	_game_options_widgets,

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};

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void ShowGameOptions()

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{

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	DeleteWindowById(WC_GAME_OPTIONS, 0);

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}

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struct GameSettingData {

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	int16 min;

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	int16 max;

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	int16 step;

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	StringID str;

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};

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static const GameSettingData _game_setting_info[] = {

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	{  0,   7,  1, STR_NULL},

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	{  0,   3,  1, STR_6830_IMMEDIATE},

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	{  0,   3,  1, STR_NUM_VERY_LOW},

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	{  0,   4,  1, STR_NONE},

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	{100, 500, 50, STR_NULL},

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	{  2,   4,  1, STR_NULL},

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	{  0,   2,  1, STR_6820_LOW},

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	{  0,   4,  1, STR_681B_VERY_SLOW},

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	{  0,   2,  1, STR_6820_LOW},

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	{  0,   2,  1, STR_6823_NONE},

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	{  0,   3,  1, STR_6826_X1_5},

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	{  0,   2,  1, STR_6820_LOW},

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	{  0,   3,  1, STR_682A_VERY_FLAT},

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	{  0,   3,  1, STR_VERY_LOW},

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	{  0,   1,  1, STR_682E_STEADY},

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	{  0,   1,  1, STR_6834_AT_END_OF_LINE_AND_AT_STATIONS},

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	{  0,   1,  1, STR_6836_OFF},

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	{  0,   2,  1, STR_PERMISSIVE},

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};

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/*

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 * A: competitors

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 * B: start time in months / 3

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 * C: town count (3 = high, 0 = very low)

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 * D: industry count (4 = high, 0 = none)

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 * E: inital loan / 1000 (in GBP)

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 * F: interest rate

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 * G: running costs (0 = low, 2 = high)

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 * H: construction speed of competitors (0 = very slow, 4 = very fast)

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 * I: intelligence (0-2)

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 * J: breakdowns (0 = off, 2 = normal)

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 * K: subsidy multiplier (0 = 1.5, 3 = 4.0)

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 * L: construction cost (0-2)

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 * M: terrain type (0 = very flat, 3 = mountainous)

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 * N: amount of water (0 = very low, 3 = high)

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 * O: economy (0 = steady, 1 = fluctuating)

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 * P: Train reversing (0 = end of line + stations, 1 = end of line)

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 * Q: disasters

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 * R: area restructuring (0 = permissive, 2 = hostile)

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 */

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static const GDType _default_game_diff[3][GAME_DIFFICULTY_NUM] = { /*

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	 A, B, C, D,   E, F, G, H, I, J, K, L, M, N, O, P, Q, R*/

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	{2, 2, 2, 4, 300, 2, 0, 2, 0, 1, 2, 0, 1, 0, 0, 0, 0, 0}, ///< easy

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	{4, 1, 2, 3, 150, 3, 1, 3, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1}, ///< medium

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	{7, 0, 3, 3, 100, 4, 1, 3, 2, 2, 0, 2, 3, 2, 1, 1, 1, 2}, ///< hard

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};

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void SetDifficultyLevel(int mode, GameOptions *gm_opt)

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{

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	int i;

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	assert(mode <= 3);

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	gm_opt->diff_level = mode;

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	if (mode != 3) { // not custom

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		for (i = 0; i != GAME_DIFFICULTY_NUM; i++)

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			((GDType*)&gm_opt->diff)[i] = _default_game_diff[mode][i];

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	}

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}

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/**

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 * Checks the difficulty levels read from the configuration and

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 * forces them to be correct when invalid.

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 */

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void CheckDifficultyLevels()

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{

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	if (_opt_newgame.diff_level != 3) {

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		SetDifficultyLevel(_opt_newgame.diff_level, &_opt_newgame);

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	} else {

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		for (uint i = 0; i < GAME_DIFFICULTY_NUM; i++) {

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			GDType *diff = ((GDType*)&_opt_newgame.diff) + i;

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			*diff = Clamp(*diff, _game_setting_info[i].min, _game_setting_info[i].max);

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			*diff -= *diff % _game_setting_info[i].step;

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		}

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	}

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}

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extern void StartupEconomy();

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/* Widget definition for the game difficulty settings window */

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static const Widget _game_difficulty_widgets[] = {

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{   WWT_CLOSEBOX,   RESIZE_NONE,    10,     0,    10,     0,    13, STR_00C5,                     STR_018B_CLOSE_WINDOW},           // GDW_CLOSEBOX

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{    WWT_CAPTION,   RESIZE_NONE,    10,    11,   369,     0,    13, STR_6800_DIFFICULTY_LEVEL,    STR_018C_WINDOW_TITLE_DRAG_THIS}, // GDW_CAPTION

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{      WWT_PANEL,   RESIZE_NONE,    10,     0,   369,    14,    41, 0x0,                          STR_NULL},                        // GDW_UPPER_BG

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,    10,    96,    16,    27, STR_6801_EASY,                STR_NULL},                        // GDW_LVL_EASY

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,    97,   183,    16,    27, STR_6802_MEDIUM,              STR_NULL},                        // GDW_LVL_MEDIUM

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,   184,   270,    16,    27, STR_6803_HARD,                STR_NULL},                        // GDW_LVL_HARD

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,   271,   357,    16,    27, STR_6804_CUSTOM,              STR_NULL},                        // GDW_LVL_CUSTOM

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{    WWT_TEXTBTN,   RESIZE_NONE,     6,    10,   357,    28,    39, STR_6838_SHOW_HI_SCORE_CHART, STR_NULL},                        // GDW_HIGHSCORE

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{      WWT_PANEL,   RESIZE_NONE,    10,     0,   369,    42,   262, 0x0,                          STR_NULL},                        // GDW_SETTING_BG

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{      WWT_PANEL,   RESIZE_NONE,    10,     0,   369,   263,   278, 0x0,                          STR_NULL},                        // GDW_LOWER_BG

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,   105,   185,   265,   276, STR_OPTIONS_SAVE_CHANGES,     STR_NULL},                        // GDW_ACCEPT

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{ WWT_PUSHTXTBTN,   RESIZE_NONE,     3,   186,   266,   265,   276, STR_012E_CANCEL,              STR_NULL},                        // GDW_CANCEL

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{   WIDGETS_END},

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};

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/* Window definition for the game difficulty settings window */

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static const WindowDesc _game_difficulty_desc = {

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	WDP_CENTER, WDP_CENTER, 370, 279, 370, 279,

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	WC_GAME_OPTIONS, WC_NONE,

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	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET,

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	_game_difficulty_widgets,