1

/* $Id$ */

     2

     3

/** @file settings_gui.cpp */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "currency.h"

     8

#include "gui.h"

     9

#include "window_gui.h"

    10

#include "textbuf_gui.h"

    11

#include "command_func.h"

    12

#include "engine.h"

    13

#include "screenshot.h"

    14

#include "newgrf.h"

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#include "network/network.h"

    16

#include "town.h"

    17

#include "variables.h"

    18

#include "settings_internal.h"

    19

#include "newgrf_townname.h"

    20

#include "strings_func.h"

    21

#include "functions.h"

    22

#include "window_func.h"

    23

#include "vehicle_base.h"

    24

#include "core/alloc_func.hpp"

    25

#include "string_func.h"

    26

#include "gfx_func.h"

    27

#include "widgets/dropdown_func.h"

    28

    29

#include "table/sprites.h"

    30

#include "table/strings.h"

    31

    32

static uint32 _difficulty_click_a;

    33

static uint32 _difficulty_click_b;

    34

static byte _difficulty_timeout;

    35

    36

static const StringID _units_dropdown[] = {

    37

	STR_UNITS_IMPERIAL,

    38

	STR_UNITS_METRIC,

    39

	STR_UNITS_SI,

    40

	INVALID_STRING_ID

    41

};

    42

    43

static const StringID _driveside_dropdown[] = {

    44

	STR_02E9_DRIVE_ON_LEFT,

    45

	STR_02EA_DRIVE_ON_RIGHT,

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	INVALID_STRING_ID

    47

};

    48

    49

static const StringID _autosave_dropdown[] = {

    50

	STR_02F7_OFF,

    51

	STR_AUTOSAVE_1_MONTH,

    52

	STR_02F8_EVERY_3_MONTHS,

    53

	STR_02F9_EVERY_6_MONTHS,

    54

	STR_02FA_EVERY_12_MONTHS,

    55

	INVALID_STRING_ID,

    56

};

    57

    58

static const StringID _designnames_dropdown[] = {

    59

	STR_02BE_DEFAULT,

    60

	STR_02BF_CUSTOM,

    61

	INVALID_STRING_ID

    62

};

    63

    64

static StringID *BuildDynamicDropdown(StringID base, int num)

    65

{

    66

	static StringID buf[32 + 1];

    67

	StringID *p = buf;

    68

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

    69

	*p = INVALID_STRING_ID;

    70

	return buf;

    71

}

    72

    73

int _nb_orig_names = SPECSTR_TOWNNAME_LAST - SPECSTR_TOWNNAME_START + 1;

    74

static StringID *_town_names = NULL;

    75

static StringID *_grf_names = NULL;

    76

static int _nb_grf_names = 0;

    77

    78

void SortTownGeneratorNames()

    79

{

    80

	int n = 0;

    81

    82

	/* Get Newgrf generators' names */

    83

	free(_grf_names);

    84

	_grf_names = GetGRFTownNameList();

    85

	_nb_grf_names = 0;

    86

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

    87

    88

	/* Prepare the list */

    89

	free(_town_names);

    90

	_town_names = MallocT<StringID>(_nb_orig_names + _nb_grf_names + 1);

    91

    92

	/* Put the original strings */

    93

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

    94

    95

	/* Put the grf strings */

    96

	for (int i = 0; i < _nb_grf_names; i++) _town_names[n++] = _grf_names[i];

    97

    98

	/* Put the terminator */

    99

	_town_names[n] = INVALID_STRING_ID;

   100

   101

	/* Sort the strings */

   102

	qsort(&_town_names[0], _nb_orig_names + _nb_grf_names, sizeof(StringID), &StringIDSorter);

   103

}

   104

   105

static inline StringID TownName(int town_name)

   106

{

   107

	if (town_name < _nb_orig_names) return STR_TOWNNAME_ORIGINAL_ENGLISH + town_name;

   108

	town_name -= _nb_orig_names;

   109

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

   110

	return STR_UNDEFINED;

   111

}

   112

   113

static int GetCurRes()

   114

{

   115

	int i;

   116

   117

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

   118

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

   119

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

   120

			break;

   121

		}

   122

	}

   123

	return i;

   124

}

   125

   126

static inline bool RoadVehiclesAreBuilt()

   127

{

   128

	const Vehicle* v;

   129

   130

	FOR_ALL_VEHICLES(v) {

   131

		if (v->type == VEH_ROAD) return true;

   132

	}

   133

	return false;

   134

}

   135

   136

   137

enum GameOptionsWidgets {

   138

	GAMEOPT_CURRENCY_TXT    =  4,

   139

	GAMEOPT_CURRENCY_BTN,

   140

	GAMEOPT_DISTANCE_TXT    =  7,

   141

	GAMEOPT_DISTANCE_BTN,

   142

	GAMEOPT_ROADSIDE_TXT    = 10,

   143

	GAMEOPT_ROADSIDE_BTN,

   144

	GAMEOPT_TOWNNAME_TXT    = 13,

   145

	GAMEOPT_TOWNNAME_BTN,

   146

	GAMEOPT_AUTOSAVE_TXT    = 16,

   147

	GAMEOPT_AUTOSAVE_BTN,

   148

	GAMEOPT_VEHICLENAME_TXT = 19,

   149

	GAMEOPT_VEHICLENAME_BTN,

   150

	GAMEOPT_VEHICLENAME_SAVE,

   151

	GAMEOPT_LANG_TXT        = 23,

   152

	GAMEOPT_LANG_BTN,

   153

	GAMEOPT_RESOLUTION_TXT  = 26,

   154

	GAMEOPT_RESOLUTION_BTN,

   155

	GAMEOPT_FULLSCREEN,

   156

	GAMEOPT_SCREENSHOT_TXT  = 30,

   157

	GAMEOPT_SCREENSHOT_BTN,

   158

};

   159

   160

static void ShowCustCurrency();

   161

   162

static void GameOptionsWndProc(Window *w, WindowEvent *e)

   163

{

   164

	switch (e->event) {

   165

		case WE_PAINT: {

   166

			int i;

   167

			StringID str = STR_02BE_DEFAULT;

   168

   169

			w->SetWidgetDisabledState(21, !(_vehicle_design_names & 1));

   170

			if (!w->IsWidgetDisabled(21)) str = STR_02BF_CUSTOM;

   171

			SetDParam(0, str);

   172

			SetDParam(1, _currency_specs[_opt_ptr->currency].name);

   173

			SetDParam(2, STR_UNITS_IMPERIAL + _opt_ptr->units);

   174

			SetDParam(3, STR_02E9_DRIVE_ON_LEFT + _opt_ptr->road_side);

   175

			SetDParam(4, TownName(_opt_ptr->town_name));

   176

			SetDParam(5, _autosave_dropdown[_opt_ptr->autosave]);

   177

			SetDParam(6, SPECSTR_LANGUAGE_START + _dynlang.curr);

   178

			i = GetCurRes();

   179

			SetDParam(7, i == _num_resolutions ? STR_RES_OTHER : SPECSTR_RESOLUTION_START + i);

   180

			SetDParam(8, SPECSTR_SCREENSHOT_START + _cur_screenshot_format);

   181

			w->SetWidgetLoweredState(GAMEOPT_FULLSCREEN, _fullscreen);

   182

   183

			DrawWindowWidgets(w);

   184

			DrawString(20, 175, STR_OPTIONS_FULLSCREEN, TC_FROMSTRING); // fullscreen

   185

		} break;

   186

   187

		case WE_CLICK:

   188

			switch (e->we.click.widget) {

   189

				case GAMEOPT_CURRENCY_TXT: case GAMEOPT_CURRENCY_BTN: /* Setup currencies dropdown */

   190

					ShowDropDownMenu(w, BuildCurrencyDropdown(), _opt_ptr->currency, GAMEOPT_CURRENCY_BTN, _game_mode == GM_MENU ? 0 : ~GetMaskOfAllowedCurrencies(), 0);

   191

					break;

   192

   193

				case GAMEOPT_DISTANCE_TXT: case GAMEOPT_DISTANCE_BTN: /* Setup distance unit dropdown */

   194

					ShowDropDownMenu(w, _units_dropdown, _opt_ptr->units, GAMEOPT_DISTANCE_BTN, 0, 0);

   195

					break;

   196

   197

				case GAMEOPT_ROADSIDE_TXT: case GAMEOPT_ROADSIDE_BTN: { /* Setup road-side dropdown */

   198

					int i = 0;

   199

   200

					/* You can only change the drive side if you are in the menu or ingame with

   201

					 * no vehicles present. In a networking game only the server can change it */

   202

					if ((_game_mode != GM_MENU && RoadVehiclesAreBuilt()) || (_networking && !_network_server))

   203

						i = (-1) ^ (1 << _opt_ptr->road_side); // disable the other value

   204

   205

					ShowDropDownMenu(w, _driveside_dropdown, _opt_ptr->road_side, GAMEOPT_ROADSIDE_BTN, i, 0);

   206

				} break;

   207

   208

				case GAMEOPT_TOWNNAME_TXT: case GAMEOPT_TOWNNAME_BTN: { /* Setup townname dropdown */

   209

					uint sel = 0;

   210

					for (uint i = 0; _town_names[i] != INVALID_STRING_ID; i++) {

   211

						if (_town_names[i] == TownName(_opt_ptr->town_name)) {

   212

							sel = i;

   213

							break;

   214

						}

   215

					}

   216

					ShowDropDownMenu(w, _town_names, sel, GAMEOPT_TOWNNAME_BTN, (_game_mode == GM_MENU) ? 0 : (-1) ^ (1 << sel), 0);

   217

				} break;

   218

   219

				case GAMEOPT_AUTOSAVE_TXT: case GAMEOPT_AUTOSAVE_BTN: /* Setup autosave dropdown */

   220

					ShowDropDownMenu(w, _autosave_dropdown, _opt_ptr->autosave, GAMEOPT_AUTOSAVE_BTN, 0, 0);

   221

					break;

   222

   223

				case GAMEOPT_VEHICLENAME_TXT: case GAMEOPT_VEHICLENAME_BTN: /* Setup customized vehicle-names dropdown */

   224

					ShowDropDownMenu(w, _designnames_dropdown, (_vehicle_design_names & 1) ? 1 : 0, GAMEOPT_VEHICLENAME_BTN, (_vehicle_design_names & 2) ? 0 : 2, 0);

   225

					break;

   226

   227

				case GAMEOPT_VEHICLENAME_SAVE: /* Save customized vehicle-names to disk */

   228

					break;  // not implemented

   229

   230

				case GAMEOPT_LANG_TXT: case GAMEOPT_LANG_BTN: /* Setup interface language dropdown */

   231

					ShowDropDownMenu(w, _dynlang.dropdown, _dynlang.curr, GAMEOPT_LANG_BTN, 0, 0);

   232

					break;

   233

   234

				case GAMEOPT_RESOLUTION_TXT: case GAMEOPT_RESOLUTION_BTN: /* Setup resolution dropdown */

   235

					ShowDropDownMenu(w, BuildDynamicDropdown(SPECSTR_RESOLUTION_START, _num_resolutions), GetCurRes(), GAMEOPT_RESOLUTION_BTN, 0, 0);

   236

					break;

   237

   238

				case GAMEOPT_FULLSCREEN: /* Click fullscreen on/off */

   239

					/* try to toggle full-screen on/off */

   240

					if (!ToggleFullScreen(!_fullscreen)) {

   241

						ShowErrorMessage(INVALID_STRING_ID, STR_FULLSCREEN_FAILED, 0, 0);

   242

					}

   243

					w->SetWidgetLoweredState(GAMEOPT_FULLSCREEN, _fullscreen);

   244

					SetWindowDirty(w);

   245

					break;

   246

   247

				case GAMEOPT_SCREENSHOT_TXT: case GAMEOPT_SCREENSHOT_BTN: /* Setup screenshot format dropdown */

   248

					ShowDropDownMenu(w, BuildDynamicDropdown(SPECSTR_SCREENSHOT_START, _num_screenshot_formats), _cur_screenshot_format, GAMEOPT_SCREENSHOT_BTN, 0, 0);

   249

					break;

   250

			}

   251

			break;

   252

   253

		case WE_DROPDOWN_SELECT:

   254

			switch (e->we.dropdown.button) {

   255

				case GAMEOPT_VEHICLENAME_BTN: /* Vehicle design names */

   256

					if (e->we.dropdown.index == 0) {

   257

						DeleteCustomEngineNames();

   258

						MarkWholeScreenDirty();

   259

					} else if (!(_vehicle_design_names & 1)) {

   260

						LoadCustomEngineNames();

   261

						MarkWholeScreenDirty();

   262

					}

   263

					break;

   264

   265

				case GAMEOPT_CURRENCY_BTN: /* Currency */

   266

					if (e->we.dropdown.index == CUSTOM_CURRENCY_ID) ShowCustCurrency();

   267

					_opt_ptr->currency = e->we.dropdown.index;

   268

					MarkWholeScreenDirty();

   269

					break;

   270

   271

				case GAMEOPT_DISTANCE_BTN: /* Measuring units */

   272

					_opt_ptr->units = e->we.dropdown.index;

   273

					MarkWholeScreenDirty();

   274

					break;

   275

   276

				case GAMEOPT_ROADSIDE_BTN: /* Road side */

   277

					if (_opt_ptr->road_side != e->we.dropdown.index) { // only change if setting changed

   278

						DoCommandP(0, e->we.dropdown.index, 0, NULL, CMD_SET_ROAD_DRIVE_SIDE | CMD_MSG(STR_00B4_CAN_T_DO_THIS));

   279

						MarkWholeScreenDirty();

   280

					}

   281

					break;

   282

   283

				case GAMEOPT_TOWNNAME_BTN: /* Town names */

   284

					if (_game_mode == GM_MENU) {

   285

						for (uint i = 0; _town_names[i] != INVALID_STRING_ID; i++) {

   286

							if (_town_names[e->we.dropdown.index] == TownName(i)) {

   287

								_opt_ptr->town_name = i;

   288

								break;

   289

							}

   290

						}

   291

						InvalidateWindow(WC_GAME_OPTIONS, 0);

   292

					}

   293

					break;

   294

   295

				case GAMEOPT_AUTOSAVE_BTN: /* Autosave options */

   296

					_opt.autosave = _opt_newgame.autosave = e->we.dropdown.index;

   297

					SetWindowDirty(w);

   298

					break;

   299

   300

				case GAMEOPT_LANG_BTN: /* Change interface language */

   301

					ReadLanguagePack(e->we.dropdown.index);

   302

					CheckForMissingGlyphsInLoadedLanguagePack();

   303

					UpdateAllStationVirtCoord();

   304

					MarkWholeScreenDirty();

   305

					break;

   306

   307

				case GAMEOPT_RESOLUTION_BTN: /* Change resolution */

   308

					if (e->we.dropdown.index < _num_resolutions && ChangeResInGame(_resolutions[e->we.dropdown.index][0],_resolutions[e->we.dropdown.index][1]))

   309

						SetWindowDirty(w);

   310

					break;

   311

   312

				case GAMEOPT_SCREENSHOT_BTN: /* Change screenshot format */

   313

					SetScreenshotFormat(e->we.dropdown.index);

   314

					SetWindowDirty(w);

   315

					break;

   316

			}

   317

			break;

   318

   319

		case WE_DESTROY:

   320

			DeleteWindowById(WC_CUSTOM_CURRENCY, 0);

   321

			break;

   322

	}

   323

   324

}

   325

   326

/** Change the side of the road vehicles drive on (server only).

   327

 * @param tile unused

   328

 * @param flags operation to perform

   329

 * @param p1 the side of the road; 0 = left side and 1 = right side

   330

 * @param p2 unused

   331

 */

   332

CommandCost CmdSetRoadDriveSide(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   333

{

   334

	/* Check boundaries and you can only change this if NO vehicles have been built yet,

   335

	 * except in the intro-menu where of course it's always possible to do so. */

   336

	if (p1 > 1 || (_game_mode != GM_MENU && RoadVehiclesAreBuilt())) return CMD_ERROR;

   337

   338

	if (flags & DC_EXEC) {

   339

		_opt_ptr->road_side = p1;

   340

		InvalidateWindow(WC_GAME_OPTIONS,0);

   341

	}

   342

	return CommandCost();

   343

}

   344

   345

static const Widget _game_options_widgets[] = {

   346

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

   347

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

   348

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

   349

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

   350

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

   351

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   158,   168,    35,    44, STR_0225,                          STR_02E2_CURRENCY_UNITS_SELECTION},

   352

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

   353

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

   354

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   338,   348,    35,    44, STR_0225,                          STR_MEASURING_UNITS_SELECTION},

   355

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

   356

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

   357

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   158,   168,    77,    86, STR_0225,                          STR_02E8_SELECT_SIDE_OF_ROAD_FOR},

   358

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

   359

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

   360

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   338,   348,    77,    86, STR_0225,                          STR_02ED_SELECT_STYLE_OF_TOWN_NAMES},

   361

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

   362

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

   363

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   158,   168,   119,   128, STR_0225,                          STR_02F6_SELECT_INTERVAL_BETWEEN},

   364

   365

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

   366

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

   367

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   108,   118,   208,   217, STR_0225,                          STR_02C1_VEHICLE_DESIGN_NAMES_SELECTION},

   368

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

   369

   370

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

   371

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

   372

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   338,   348,   119,   128, STR_0225,                          STR_OPTIONS_LANG_TIP},

   373

   374

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

   375

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

   376

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   158,   168,   161,   170, STR_0225,                          STR_OPTIONS_RES_TIP},

   377

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

   378

   379

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

   380

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

   381

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   338,   348,   161,   170, STR_0225,                          STR_OPTIONS_SCREENSHOT_FORMAT_TIP},

   382

   383

{   WIDGETS_END},

   384

};

   385

   386

static const WindowDesc _game_options_desc = {

   387

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

   388

	WC_GAME_OPTIONS, WC_NONE,

   389

	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,

   390

	_game_options_widgets,

   391

	GameOptionsWndProc

   392

};

   393

   394

   395

void ShowGameOptions()

   396

{

   397

	DeleteWindowById(WC_GAME_OPTIONS, 0);

   398

	AllocateWindowDesc(&_game_options_desc);

   399

}

   400

   401

struct GameSettingData {

   402

	int16 min;

   403

	int16 max;

   404

	int16 step;

   405

	StringID str;

   406

};

   407

   408

static const GameSettingData _game_setting_info[] = {

   409

	{  0,   7,  1, STR_NULL},

   410

	{  0,   3,  1, STR_6830_IMMEDIATE},

   411

	{  0,   3,  1, STR_NUM_VERY_LOW},

   412

	{  0,   4,  1, STR_26816_NONE},

   413

	{100, 500, 50, STR_NULL},

   414

	{  2,   4,  1, STR_NULL},

   415

	{  0,   2,  1, STR_6820_LOW},

   416

	{  0,   4,  1, STR_681B_VERY_SLOW},

   417

	{  0,   2,  1, STR_6820_LOW},

   418

	{  0,   2,  1, STR_6823_NONE},

   419

	{  0,   3,  1, STR_6826_X1_5},

   420

	{  0,   2,  1, STR_6820_LOW},

   421

	{  0,   3,  1, STR_682A_VERY_FLAT},

   422

	{  0,   3,  1, STR_VERY_LOW},

   423

	{  0,   1,  1, STR_682E_STEADY},

   424

	{  0,   1,  1, STR_6834_AT_END_OF_LINE_AND_AT_STATIONS},

   425

	{  0,   1,  1, STR_6836_OFF},

   426

	{  0,   2,  1, STR_6839_PERMISSIVE},

   427

};

   428

   429

/*

   430

 * A: competitors

   431

 * B: start time in months / 3

   432

 * C: town count (2 = high, 0 = very low)

   433

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

   434

 * E: inital loan / 1000 (in GBP)

   435

 * F: interest rate

   436

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

   437

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

   438

 * I: intelligence (0-2)

   439

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

   440

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

   441

 * L: construction cost (0-2)

   442

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

   443

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

   444

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

   445

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

   446

 * Q: disasters

   447

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

   448

 */

   449

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

   450

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

   451

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

   452

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

   453

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

   454

};

   455

   456

void SetDifficultyLevel(int mode, GameOptions *gm_opt)

   457

{

   458

	int i;

   459

	assert(mode <= 3);

   460

   461

	gm_opt->diff_level = mode;

   462

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

   463

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

   464

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

   465

	}

   466

}

   467

   468

/**

   469

 * Checks the difficulty levels read from the configuration and

   470

 * forces them to be correct when invalid.

   471

 */

   472

void CheckDifficultyLevels()

   473

{

   474

	if (_opt_newgame.diff_level != 3) {

   475

		SetDifficultyLevel(_opt_newgame.diff_level, &_opt_newgame);

   476

	} else {

   477

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

   478

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

   479

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

   480

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

   481

		}

   482

	}

   483

}

   484

   485

extern void StartupEconomy();

   486

   487

enum {

   488

	GAMEDIFF_WND_TOP_OFFSET = 45,

   489

	GAMEDIFF_WND_ROWSIZE    = 9

   490

};

   491

   492

/* Temporary holding place of values in the difficulty window until 'Save' is clicked */

   493

static GameOptions _opt_mod_temp;