1

/* $Id$ */

     2

     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "currency.h"

     6

#include "functions.h"

     7

#include "string.h"

     8

#include "strings.h" // XXX GetCurrentCurrencyRate()

     9

#include "table/sprites.h"

    10

#include "table/strings.h"

    11

#include "window.h"

    12

#include "gui.h"

    13

#include "gfx.h"

    14

#include "command.h"

    15

#include "engine.h"

    16

#include "screenshot.h"

    17

#include "newgrf.h"

    18

#include "network/network.h"

    19

#include "town.h"

    20

#include "variables.h"

    21

#include "settings.h"

    22

#include "vehicle.h"

    23

#include "date.h"

    25

    26

static uint32 _difficulty_click_a;

    27

static uint32 _difficulty_click_b;

    28

static byte _difficulty_timeout;

    29

    30

static const StringID _units_dropdown[] = {

    31

	STR_UNITS_IMPERIAL,

    32

	STR_UNITS_METRIC,

    33

	STR_UNITS_SI,

    34

	INVALID_STRING_ID

    35

};

    36

    37

static const StringID _driveside_dropdown[] = {

    38

	STR_02E9_DRIVE_ON_LEFT,

    39

	STR_02EA_DRIVE_ON_RIGHT,

    40

	INVALID_STRING_ID

    41

};

    42

    43

static const StringID _autosave_dropdown[] = {

    44

	STR_02F7_OFF,

    45

	STR_AUTOSAVE_1_MONTH,

    46

	STR_02F8_EVERY_3_MONTHS,

    47

	STR_02F9_EVERY_6_MONTHS,

    48

	STR_02FA_EVERY_12_MONTHS,

    49

	INVALID_STRING_ID,

    50

};

    51

    52

static const StringID _designnames_dropdown[] = {

    53

	STR_02BE_DEFAULT,

    54

	STR_02BF_CUSTOM,

    55

	INVALID_STRING_ID

    56

};

    57

    58

static StringID *BuildDynamicDropdown(StringID base, int num)

    59

{

    60

	static StringID buf[32 + 1];

    61

	StringID *p = buf;

    62

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

    63

	*p = INVALID_STRING_ID;

    64

	return buf;

    65

}

    66

    67

static int GetCurRes(void)

    68

{

    69

	int i;

    70

    71

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

    72

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

    73

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

    74

			break;

    75

		}

    76

	}

    77

	return i;

    78

}

    79

    80

static inline bool RoadVehiclesAreBuilt(void)

    81

{

    82

	const Vehicle* v;

    83

    84

	FOR_ALL_VEHICLES(v) {

    85

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

    86

	}

    87

	return false;

    88

}

    89

    90

    91

static void ShowCustCurrency(void);

    92

    93

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

    94

{

    95

	switch (e->event) {

    96

	case WE_PAINT: {

    97

		int i;

    98

		StringID str = STR_02BE_DEFAULT;

    99

   100

		SetWindowWidgetDisabledState(w, 21, !(_vehicle_design_names & 1));

   101

		if (!IsWindowWidgetDisabled(w, 21)) str = STR_02BF_CUSTOM;

   102

		SetDParam(0, str);

   103

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

   104

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

   105

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

   106

		SetDParam(4, STR_TOWNNAME_ORIGINAL_ENGLISH + _opt_ptr->town_name);

   107

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

   108

		SetDParam(6, SPECSTR_LANGUAGE_START + _dynlang.curr);

   109

		i = GetCurRes();

   110

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

   111

		SetDParam(8, SPECSTR_SCREENSHOT_START + _cur_screenshot_format);

   112

		SetWindowWidgetLoweredState(w, 28, _fullscreen);

   113

   114

		DrawWindowWidgets(w);

   115

		DrawString(20, 175, STR_OPTIONS_FULLSCREEN, 0); // fullscreen

   116

	}	break;

   117

   118

	case WE_CLICK:

   119

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

   120

		case 4: case 5: /* Setup currencies dropdown */

   121

			ShowDropDownMenu(w, BuildCurrencyDropdown(), _opt_ptr->currency, 5, _game_mode == GM_MENU ? 0 : ~GetMaskOfAllowedCurrencies(), 0);;

   122

			return;

   123

		case 7: case 8: /* Setup distance unit dropdown */

   124

			ShowDropDownMenu(w, _units_dropdown, _opt_ptr->units, 8, 0, 0);

   125

			return;

   126

		case 10: case 11: { /* Setup road-side dropdown */

   127

			int i = 0;

   128

   129

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

   130

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

   131

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

   132

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

   133

   134

			ShowDropDownMenu(w, _driveside_dropdown, _opt_ptr->road_side, 11, i, 0);

   135

		} return;

   136

		case 13: case 14: { /* Setup townname dropdown */

   137

			int i = _opt_ptr->town_name;

   138

			ShowDropDownMenu(w, BuildDynamicDropdown(STR_TOWNNAME_ORIGINAL_ENGLISH, SPECSTR_TOWNNAME_LAST - SPECSTR_TOWNNAME_START + 1), i, 14, (_game_mode == GM_MENU) ? 0 : (-1) ^ (1 << i), 0);

   139

			return;

   140

		}

   141

		case 16: case 17: /* Setup autosave dropdown */

   142

			ShowDropDownMenu(w, _autosave_dropdown, _opt_ptr->autosave, 17, 0, 0);

   143

			return;

   144

		case 19: case 20: /* Setup customized vehicle-names dropdown */

   145

			ShowDropDownMenu(w, _designnames_dropdown, (_vehicle_design_names & 1) ? 1 : 0, 20, (_vehicle_design_names & 2) ? 0 : 2, 0);

   146

			return;

   147

		case 21: /* Save customized vehicle-names to disk */

   148

			return;

   149

		case 23: case 24: /* Setup interface language dropdown */

   150

			ShowDropDownMenu(w, _dynlang.dropdown, _dynlang.curr, 24, 0, 0);

   151

			return;

   152

		case 26: case 27: /* Setup resolution dropdown */

   153

			ShowDropDownMenu(w, BuildDynamicDropdown(SPECSTR_RESOLUTION_START, _num_resolutions), GetCurRes(), 27, 0, 0);

   154

			return;

   155

		case 28: /* Click fullscreen on/off */

   156

			SetWindowWidgetLoweredState(w, 28, !_fullscreen);

   157

			ToggleFullScreen(!_fullscreen); // toggle full-screen on/off

   158

			SetWindowDirty(w);

   159

			return;

   160

		case 30: case 31: /* Setup screenshot format dropdown */

   161

			ShowDropDownMenu(w, BuildDynamicDropdown(SPECSTR_SCREENSHOT_START, _num_screenshot_formats), _cur_screenshot_format, 31, 0, 0);

   162

			return;

   163

		}

   164

		break;

   165

   166

	case WE_DROPDOWN_SELECT:

   167

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

   168

		case 20: /* Vehicle design names */

   169

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

   170

				DeleteCustomEngineNames();

   171

				MarkWholeScreenDirty();

   172

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

   173

				LoadCustomEngineNames();

   174

				MarkWholeScreenDirty();

   175

			}

   176

			break;

   177

		case 5: /* Currency */

   178

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

   179

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

   180

			MarkWholeScreenDirty();

   181

			break;

   182

		case 8: /* Measuring units */

   183

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

   184

			MarkWholeScreenDirty();

   185

			break;

   186

		case 11: /* Road side */

   187

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

   188

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

   189

				MarkWholeScreenDirty();

   190

			}

   191

			break;

   192

		case 14: /* Town names */

   193

			if (_game_mode == GM_MENU) {

   194

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

   195

				InvalidateWindow(WC_GAME_OPTIONS, 0);

   196

			}

   197

			break;

   198

		case 17: /* Autosave options */

   199

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

   200

			SetWindowDirty(w);

   201

			break;

   202

		case 24: /* Change interface language */

   203

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

   204

			MarkWholeScreenDirty();

   205

			break;

   206

		case 27: /* Change resolution */

   207

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

   208

				SetWindowDirty(w);

   209

			break;

   210

		case 31: /* Change screenshot format */

   211

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

   212

			SetWindowDirty(w);

   213

			break;

   214

		}

   215

		break;

   216

   217

	case WE_DESTROY:

   218

		DeleteWindowById(WC_CUSTOM_CURRENCY, 0);

   219

		break;

   220

	}

   221

   222

}

   223

   224

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

   225

 * @param tile unused

   226

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

   227

 * @param p2 unused

   228

 */

   229

int32 CmdSetRoadDriveSide(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   230

{

   231

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

   232

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

   233

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

   234

   235

	if (flags & DC_EXEC) {

   236

		_opt_ptr->road_side = p1;

   237

		InvalidateWindow(WC_GAME_OPTIONS,0);

   238

	}

   239

	return 0;

   240

}

   241

   242

static const Widget _game_options_widgets[] = {

   243

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

   244

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

   245

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

   246

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

   247

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

   248

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

   249

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

   250

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

   251

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

   252

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

   253

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

   254

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

   255

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

   256

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

   257

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

   258

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

   259

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

   260

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

   261

   262

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

   263

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

   264

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

   265

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

   266

   267

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

   268

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

   269

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

   270

   271

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

   272

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

   273

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

   274

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

   275

   276

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

   277

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

   278

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

   279

   280

{   WIDGETS_END},

   281

};

   282

   283

static const WindowDesc _game_options_desc = {

   284

	WDP_CENTER, WDP_CENTER, 370, 239,

   285

	WC_GAME_OPTIONS,0,

   286

	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,

   287

	_game_options_widgets,

   288

	GameOptionsWndProc

   289

};

   290

   291

   292

void ShowGameOptions(void)

   293

{

   294

	DeleteWindowById(WC_GAME_OPTIONS, 0);

   295

	AllocateWindowDesc(&_game_options_desc);

   296

}

   297

   298

typedef struct {

   299

	int16 min;

   300

	int16 max;

   301

	int16 step;

   302

	StringID str;

   303

} GameSettingData;

   304

   305

static const GameSettingData _game_setting_info[] = {

   306

	{  0,   7,  1, STR_NULL},

   307

	{  0,   3,  1, STR_6830_IMMEDIATE},

   308

	{  0,   2,  1, STR_6816_LOW},

   309

	{  0,   3,  1, STR_26816_NONE},

   310

	{100, 500, 50, STR_NULL},

   311

	{  2,   4,  1, STR_NULL},

   312

	{  0,   2,  1, STR_6820_LOW},

   313

	{  0,   4,  1, STR_681B_VERY_SLOW},

   314

	{  0,   2,  1, STR_6820_LOW},

   315

	{  0,   2,  1, STR_6823_NONE},

   316

	{  0,   3,  1, STR_6826_X1_5},

   317

	{  0,   2,  1, STR_6820_LOW},

   318

	{  0,   3,  1, STR_682A_VERY_FLAT},

   319

	{  0,   3,  1, STR_VERY_LOW},

   320

	{  0,   1,  1, STR_682E_STEADY},

   321

	{  0,   1,  1, STR_6834_AT_END_OF_LINE_AND_AT_STATIONS},

   322

	{  0,   1,  1, STR_6836_OFF},

   323

	{  0,   2,  1, STR_6839_PERMISSIVE},

   324

};

   325

   326

static inline bool GetBitAndShift(uint32 *b)

   327

{

   328

	uint32 x = *b;

   329

	*b >>= 1;

   330

	return HASBIT(x, 0);

   331

}

   332

   333

/*

   334

 * A: competitors

   335

 * B: start time in months / 3

   336

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

   337

 * D: industry count (3 = high, 0 = none)

   338

 * E: inital loan / 1000 (in GBP)

   339

 * F: interest rate

   340

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

   341

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

   342

 * I: intelligence (0-2)

   343

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

   344

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

   345

 * L: construction cost (0-2)

   346

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

   347

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

   348

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

   349

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

   350

 * Q: disasters

   351

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

   352

 */

   353

static const int16 _default_game_diff[3][GAME_DIFFICULTY_NUM] = { /*

   354

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

   355

	{2, 2, 1, 3, 300, 2, 0, 2, 0, 1, 2, 0, 1, 0, 0, 0, 0, 0}, //easy

   356

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

   357

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

   358

};

   359

   360

void SetDifficultyLevel(int mode, GameOptions *gm_opt)

   361

{

   362

	int i;

   363

	assert(mode <= 3);

   364

   365

	gm_opt->diff_level = mode;

   366

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

   367

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

   368

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

   369

	}

   370

}

   371

   372

extern void StartupEconomy(void);

   373

   374

enum {

   375

	GAMEDIFF_WND_TOP_OFFSET = 45,

   376

	GAMEDIFF_WND_ROWSIZE    = 9

   377

};

   378

   379

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

   380

static GameOptions _opt_mod_temp;

   381

// 0x383E = (1 << 13) | (1 << 12) | (1 << 11) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2) | (1 << 1)

   382

#define DIFF_INGAME_DISABLED_BUTTONS 0x383E

   383

   384

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

   385

{

   386

	switch (e->event) {

   387

	case WE_CREATE: // Setup disabled buttons when creating window

   388

		/* disable all other difficulty buttons during gameplay except for 'custom' */

   389

		SetWindowWidgetDisabledState(w,  3, _game_mode == GM_NORMAL);

   390

		SetWindowWidgetDisabledState(w,  4, _game_mode == GM_NORMAL);

   391

		SetWindowWidgetDisabledState(w,  5, _game_mode == GM_NORMAL);

   392

		SetWindowWidgetDisabledState(w,  6, _game_mode == GM_NORMAL);

   393

		SetWindowWidgetDisabledState(w,  7, _game_mode == GM_EDITOR || _networking); // highscore chart in multiplayer

   394

		SetWindowWidgetDisabledState(w, 10, _networking && !_network_server); // Save-button in multiplayer (and if client)

   395

   396

		break;

   397

	case WE_PAINT: {

   398

		uint32 click_a, click_b, disabled;

   399

		int i;

   400

		int y, value;

   401

   402

		DrawWindowWidgets(w);

   403

   404

		click_a = _difficulty_click_a;

   405

		click_b = _difficulty_click_b;

   406

   407

		/* XXX - Disabled buttons in normal gameplay. Bitshifted for each button to see if

   408

		 * that bit is set. If it is set, the button is disabled */

   409

		disabled = (_game_mode == GM_NORMAL) ? DIFF_INGAME_DISABLED_BUTTONS : 0;

   410

   411

		y = GAMEDIFF_WND_TOP_OFFSET;

   412

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

   415

			if (GetBitAndShift(&disabled) || (_networking && !_network_server)) {

   416

				int color = PALETTE_MODIFIER_GREYOUT | _colour_gradient[COLOUR_YELLOW][2];

   417

				GfxFillRect( 6, y + 1,  6 + 8, y + 8, color);

   418

				GfxFillRect(16, y + 1, 16 + 8, y + 8, color);

   419

			}

   420

   421

			DrawStringCentered(10, y, STR_6819, 0);

   422

			DrawStringCentered(20, y, STR_681A, 0);

   423

   424

   425

			value = _game_setting_info[i].str + ((int*)&_opt_mod_temp.diff)[i];

   426

			if (i == 4) value *= 1000; // XXX - handle currency option

   427

			SetDParam(0, value);

   428

			DrawString(30, y, STR_6805_MAXIMUM_NO_COMPETITORS + i, 0);

   429

   430

			y += GAMEDIFF_WND_ROWSIZE + 2; // space items apart a bit

   431

		}

   432

	} break;

   433

   434

	case WE_CLICK:

   435

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

   436

		case 8: { /* Difficulty settings widget, decode click */

   437

			const GameSettingData *info;

   438

			int x, y;

   439

			uint btn, dis;

   440

			int val;

   441

   442

			// Don't allow clients to make any changes

   443

			if  (_networking && !_network_server)

   444

				return;

   445

   446

			x = e->we.click.pt.x - 5;

   447

			if (!IS_INT_INSIDE(x, 0, 21)) // Button area

   448

				return;

   449

   450

			y = e->we.click.pt.y - GAMEDIFF_WND_TOP_OFFSET;

   451

			if (y < 0)

   452

				return;

   453

   454

			// Get button from Y coord.

   455

			btn = y / (GAMEDIFF_WND_ROWSIZE + 2);

   456

			if (btn >= GAME_DIFFICULTY_NUM || y % (GAMEDIFF_WND_ROWSIZE + 2) >= 9)

   457

				return;

   458

   459

			// Clicked disabled button?

   460

			dis = (_game_mode == GM_NORMAL) ? DIFF_INGAME_DISABLED_BUTTONS : 0;

   461

   462

			if (HASBIT(dis, btn))

   463

				return;

   464

   465

			_difficulty_timeout = 5;

   466

   467

			val = ((int*)&_opt_mod_temp.diff)[btn];

   468

   469

			info = &_game_setting_info[btn]; // get information about the difficulty setting

   470

			if (x >= 10) {

   471

				// Increase button clicked

   472

				val = min(val + info->step, info->max);

   473

				SETBIT(_difficulty_click_b, btn);

   474

			} else {

   475

				// Decrease button clicked

   476

				val = max(val - info->step, info->min);

   477

				SETBIT(_difficulty_click_a, btn);

   478

			}

   479

   480

			// save value in temporary variable

   481

			((int*)&_opt_mod_temp.diff)[btn] = val;

   482

			SetDifficultyLevel(3, &_opt_mod_temp); // set difficulty level to custom

   483

			SetWindowDirty(w);

   484

		}	break;

   485

		case 3: case 4: case 5: case 6: /* Easy / Medium / Hard / Custom */

   486

			// temporarily change difficulty level

   487

			RaiseWindowWidget(w, _opt_mod_temp.diff_level + 3);

   488

			SetDifficultyLevel(e->we.click.widget - 3, &_opt_mod_temp);

   489

			LowerWindowWidget(w, _opt_mod_temp.diff_level + 3);

   490

			SetWindowDirty(w);

   491

			break;

   492

		case 7: /* Highscore Table */

   493

			ShowHighscoreTable(_opt_mod_temp.diff_level, -1);

   494

			break;

   495