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.h"

    19

#include "console.h"

    20

#include "town.h"

    21

#include "variables.h"

    22

    23

static uint32 _difficulty_click_a;

    24

static uint32 _difficulty_click_b;

    25

static byte _difficulty_timeout;

    26

    27

static const StringID _distances_dropdown[] = {

    28

	STR_0139_IMPERIAL_MILES,

    29

	STR_013A_METRIC_KILOMETERS,

    30

	INVALID_STRING_ID

    31

};

    32

    33

static const StringID _driveside_dropdown[] = {

    34

	STR_02E9_DRIVE_ON_LEFT,

    35

	STR_02EA_DRIVE_ON_RIGHT,

    36

	INVALID_STRING_ID

    37

};

    38

    39

static const StringID _autosave_dropdown[] = {

    40

	STR_02F7_OFF,

    41

	STR_AUTOSAVE_1_MONTH,

    42

	STR_02F8_EVERY_3_MONTHS,

    43

	STR_02F9_EVERY_6_MONTHS,

    44

	STR_02FA_EVERY_12_MONTHS,

    45

	INVALID_STRING_ID,

    46

};

    47

    48

static const StringID _designnames_dropdown[] = {

    49

	STR_02BE_DEFAULT,

    50

	STR_02BF_CUSTOM,

    51

	INVALID_STRING_ID

    52

};

    53

    54

static StringID *BuildDynamicDropdown(StringID base, int num)

    55

{

    56

	static StringID buf[32 + 1];

    57

	StringID *p = buf;

    58

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

    59

	*p = INVALID_STRING_ID;

    60

	return buf;

    61

}

    62

    63

static int GetCurRes(void)

    64

{

    65

	int i;

    66

    67

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

    68

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

    69

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

    70

			break;

    71

		}

    72

	}

    73

	return i;

    74

}

    75

    76

static inline bool RoadVehiclesAreBuilt(void)

    77

{

    78

	const Vehicle* v;

    79

    80

	FOR_ALL_VEHICLES(v) {

    81

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

    82

	}

    83

	return false;

    84

}

    85

    86

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

    87

{

    88

	switch (e->event) {

    89

	case WE_PAINT: {

    90

		int i;

    91

		StringID str = STR_02BE_DEFAULT;

    92

		w->disabled_state = (_vehicle_design_names & 1) ? (++str, 0) : (1 << 21);

    93

		SetDParam(0, str);

    94

		SetDParam(1, _currency_string_list[_opt_ptr->currency]);

    95

		SetDParam(2, _opt_ptr->kilometers + STR_0139_IMPERIAL_MILES);

    96

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

    97

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

    98

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

    99

		SetDParam(6, SPECSTR_LANGUAGE_START + _dynlang.curr);

   100

		i = GetCurRes();

   101

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

   102

		SetDParam(8, SPECSTR_SCREENSHOT_START + _cur_screenshot_format);

   103

		(_fullscreen) ? SETBIT(w->click_state, 28) : CLRBIT(w->click_state, 28); // fullscreen button

   104

   105

		DrawWindowWidgets(w);

   106

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

   107

	}	break;

   108

   109

	case WE_CLICK:

   110

		switch (e->click.widget) {

   111

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

   112

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

   113

			return;

   114

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

   115

			ShowDropDownMenu(w, _distances_dropdown, _opt_ptr->kilometers, 8, 0, 0);

   116

			return;

   117

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

   118

			int i = 0;

   119

   120

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

   121

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

   122

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

   123

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

   124

   125

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

   126

		} return;

   127

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

   128

			int i = _opt_ptr->town_name;

   129

			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);

   130

			return;

   131

		}

   132

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

   133

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

   134

			return;

   135

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

   136

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

   137

			return;

   138

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

   139

			return;

   140

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

   141

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

   142

			return;

   143

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

   144

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

   145

			return;

   146

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

   147

			(_fullscreen) ? CLRBIT(w->click_state, 28) : SETBIT(w->click_state, 28);

   148

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

   149

			SetWindowDirty(w);

   150

			return;

   151

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

   152

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

   153

			return;

   154

		}

   155

		break;

   156

   157

	case WE_DROPDOWN_SELECT:

   158

		switch (e->dropdown.button) {

   159

		case 20: /* Vehicle design names */

   160

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

   161

				DeleteCustomEngineNames();

   162

				MarkWholeScreenDirty();

   163

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

   164

				LoadCustomEngineNames();

   165

				MarkWholeScreenDirty();

   166

			}

   167

			break;

   168

		case 5: /* Currency */

   169

			if (e->dropdown.index == 23)

   170

				ShowCustCurrency();

   171

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

   172

			MarkWholeScreenDirty();

   173

			break;

   174

		case 8: /* Distance units */

   175

			_opt_ptr->kilometers = e->dropdown.index;

   176

			MarkWholeScreenDirty();

   177

			break;

   178

		case 11: /* Road side */

   179

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

   180

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

   181

				MarkWholeScreenDirty();

   182

			}

   183

			break;

   184

		case 14: /* Town names */

   185

			if (_game_mode == GM_MENU) {

   186

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

   187

				InvalidateWindow(WC_GAME_OPTIONS, 0);

   188

			}

   189

			break;

   190

		case 17: /* Autosave options */

   191

			_opt_ptr->autosave = e->dropdown.index;

   192

			SetWindowDirty(w);

   193

			break;

   194

		case 24: /* Change interface language */

   195

			ReadLanguagePack(e->dropdown.index);

   196

			MarkWholeScreenDirty();

   197

			break;

   198

		case 27: /* Change resolution */

   199

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

   200

				SetWindowDirty(w);

   201

			break;

   202

		case 31: /* Change screenshot format */

   203

			SetScreenshotFormat(e->dropdown.index);

   204

			SetWindowDirty(w);

   205

			break;

   206

		}

   207

		break;

   208

   209

	case WE_DESTROY:

   210

		DeleteWindowById(WC_CUSTOM_CURRENCY, 0);

   211

		break;

   212

	}

   213

   214

}

   215

   216

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

   217

 * @param x,y unused

   218

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

   219

 * @param p2 unused

   220

 */

   221

int32 CmdSetRoadDriveSide(int x, int y, uint32 flags, uint32 p1, uint32 p2)

   222

{

   223

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

   224

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

   225

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

   226

   227

	if (flags & DC_EXEC) {

   228

		_opt_ptr->road_side = p1;

   229

		InvalidateWindow(WC_GAME_OPTIONS,0);

   230

	}

   231

	return 0;

   232

}

   233

   234

static const Widget _game_options_widgets[] = {

   235

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

   236

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

   237

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

   238

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

   239

{          WWT_6,   RESIZE_NONE,    14,    20,   169,    34,    45, STR_02E1,								STR_02E2_CURRENCY_UNITS_SELECTION},

   240

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

   241

{      WWT_FRAME,   RESIZE_NONE,    14,   190,   359,    20,    55, STR_02E3_DISTANCE_UNITS,	STR_NULL},

   242

{          WWT_6,   RESIZE_NONE,    14,   200,   349,    34,    45, STR_02E4,								STR_02E5_DISTANCE_UNITS_SELECTION},

   243

{    WWT_TEXTBTN,   RESIZE_NONE,    14,   338,   348,    35,    44, STR_0225,								STR_02E5_DISTANCE_UNITS_SELECTION},

   244

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

   245

{          WWT_6,   RESIZE_NONE,    14,    20,   169,    76,    87, STR_02E7,								STR_02E8_SELECT_SIDE_OF_ROAD_FOR},

   246

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

   247

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

   248

{          WWT_6,   RESIZE_NONE,    14,   200,   349,    76,    87, STR_02EC,								STR_02ED_SELECT_STYLE_OF_TOWN_NAMES},

   249

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

   250

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

   251

{          WWT_6,   RESIZE_NONE,    14,    20,   169,   118,   129, STR_02F5,								STR_02F6_SELECT_INTERVAL_BETWEEN},

   252

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

   253

   254

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

   255

{          WWT_6,   RESIZE_NONE,    14,    20,   119,   207,   218, STR_02BD,								STR_02C1_VEHICLE_DESIGN_NAMES_SELECTION},

   256

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

   257

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

   258

   259

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

   260

{          WWT_6,   RESIZE_NONE,    14,   200,   349,   118,   129, STR_OPTIONS_LANG_CBO,		STR_OPTIONS_LANG_TIP},

   261

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

   262

   263

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

   264

{          WWT_6,   RESIZE_NONE,    14,    20,   169,   160,   171, STR_OPTIONS_RES_CBO,			STR_OPTIONS_RES_TIP},

   265

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

   266

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

   267

   268

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

   269

{          WWT_6,   RESIZE_NONE,    14,   200,   349,   160,   171, STR_OPTIONS_SCREENSHOT_FORMAT_CBO,		STR_OPTIONS_SCREENSHOT_FORMAT_TIP},

   270

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

   271

   272

{   WIDGETS_END},

   273

};

   274

   275

static const WindowDesc _game_options_desc = {

   276

	WDP_CENTER, WDP_CENTER, 370, 239,

   277

	WC_GAME_OPTIONS,0,

   278

	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,

   279

	_game_options_widgets,

   280

	GameOptionsWndProc

   281

};

   282

   283

   284

void ShowGameOptions(void)

   285

{

   286

	DeleteWindowById(WC_GAME_OPTIONS, 0);

   287

	AllocateWindowDesc(&_game_options_desc);

   288

}

   289

   290

typedef struct {

   291

	int16 min;

   292

	int16 max;

   293

	int16 step;

   294

	StringID str;

   295

} GameSettingData;

   296

   297

static const GameSettingData _game_setting_info[] = {

   298

	{  0,   7,  1, STR_NULL},

   299

	{  0,   3,  1, STR_6830_IMMEDIATE},

   300

	{  0,   2,  1, STR_6816_LOW},

   301

	{  0,   3,  1, STR_26816_NONE},

   302

	{100, 500, 50, STR_NULL},

   303

	{  2,   4,  1, STR_NULL},

   304

	{  0,   2,  1, STR_6820_LOW},

   305

	{  0,   4,  1, STR_681B_VERY_SLOW},

   306

	{  0,   2,  1, STR_6820_LOW},

   307

	{  0,   2,  1, STR_6823_NONE},

   308

	{  0,   3,  1, STR_6826_X1_5},

   309

	{  0,   2,  1, STR_6820_LOW},

   310

	{  0,   3,  1, STR_682A_VERY_FLAT},

   311

	{  0,   3,  1, STR_VERY_LOW},

   312

	{  0,   1,  1, STR_682E_STEADY},

   313

	{  0,   1,  1, STR_6834_AT_END_OF_LINE_AND_AT_STATIONS},

   314

	{  0,   1,  1, STR_6836_OFF},

   315

	{  0,   2,  1, STR_6839_PERMISSIVE},

   316

};

   317

   318

static inline bool GetBitAndShift(uint32 *b)

   319

{

   320

	uint32 x = *b;

   321

	*b >>= 1;

   322

	return HASBIT(x, 0);

   323

}

   324

   325

/*

   326

	A: competitors

   327

	B: start time in months / 3

   328

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

   329

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

   330

	E: inital loan / 1000 (in GBP)

   331

	F: interest rate

   332

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

   333

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

   334

	I: intelligence (0-2)

   335

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

   336

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

   337

	L: construction cost (0-2)

   338

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

   339

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

   340

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

   341

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

   342

	Q: disasters

   343

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

   344

*/

   345

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

   346

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

   347

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

   348

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

   349

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

   350

};

   351

   352

void SetDifficultyLevel(int mode, GameOptions *gm_opt)

   353

{

   354

	int i;

   355

	assert(mode <= 3);

   356

   357

	gm_opt->diff_level = mode;

   358

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

   359

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

   360

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

   361

	}

   362

}

   363

   364

extern void StartupEconomy(void);

   365

   366

enum {

   367

	GAMEDIFF_WND_TOP_OFFSET = 45,

   368

	GAMEDIFF_WND_ROWSIZE    = 9

   369

};

   370

   371

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

   372

static GameOptions _opt_mod_temp;

   373

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

   374

#define DIFF_INGAME_DISABLED_BUTTONS 0x383E

   375

   376

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

   377

{

   378

	switch (e->event) {

   379

		case WE_CREATE: /* Setup disabled buttons when creating window */

   380

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

   381

		w->disabled_state = (_game_mode != GM_NORMAL) ? 0 : (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);

   382

   383

		if (_game_mode == GM_EDITOR) SETBIT(w->disabled_state, 7);

   384

   385

		if (_networking) {

   386

			SETBIT(w->disabled_state, 7); // disable highscore chart in multiplayer

   387

			if (!_network_server)

   388

				SETBIT(w->disabled_state, 10); // Disable save-button in multiplayer (and if client)

   389

		}

   390

		break;

   391

	case WE_PAINT: {

   392

		uint32 click_a, click_b, disabled;

   393

		int i;

   394

		int y, value;

   395

   396

		w->click_state = (1 << 3) << _opt_mod_temp.diff_level; // have current difficulty button clicked

   397

		DrawWindowWidgets(w);

   398

   399

		click_a = _difficulty_click_a;

   400

		click_b = _difficulty_click_b;

   401

   402

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

   403

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

   404

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

   405

   406

		y = GAMEDIFF_WND_TOP_OFFSET;

   407

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

   408

			DrawFrameRect( 5, y,  5 + 8, y + 8, 3, GetBitAndShift(&click_a) ? (1 << 5) : 0);

   409

			DrawFrameRect(15, y, 15 + 8, y + 8, 3, GetBitAndShift(&click_b) ? (1 << 5) : 0);

   410

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

   411

				int color = PALETTE_MODIFIER_GREYOUT | _color_list[3].unk2;

   412

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

   413

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

   414

			}

   415

   416

			DrawStringCentered(10, y, STR_6819, 0);

   417

			DrawStringCentered(20, y, STR_681A, 0);

   418

   419

   420

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

   421

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

   422

			SetDParam(0, value);

   423

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

   424

   425

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

   426

		}

   427

	} break;

   428

   429

	case WE_CLICK:

   430

		switch (e->click.widget) {

   431

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

   432

			const GameSettingData *info;

   433

			int x, y;

   434

			uint btn, dis;

   435

			int val;

   436

   437

			// Don't allow clients to make any changes

   438

			if  (_networking && !_network_server)

   439

				return;

   440

   441

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

   442

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

   443

				return;

   444

   445

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

   446

			if (y < 0)

   447

				return;

   448

   449

			// Get button from Y coord.

   450

			btn = y / (GAMEDIFF_WND_ROWSIZE + 2);

   451

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

   452

				return;

   453

   454

			// Clicked disabled button?

   455

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

   456

   457

			if (HASBIT(dis, btn))

   458

				return;

   459

   460

			_difficulty_timeout = 5;

   461

   462

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

   463

   464

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

   465

			if (x >= 10) {

   466

				// Increase button clicked

   467

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

   468

				SETBIT(_difficulty_click_b, btn);

   469

			} else {

   470

				// Decrease button clicked

   471

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

   472

				SETBIT(_difficulty_click_a, btn);

   473

			}

   474

   475

			// save value in temporary variable

   476

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

   477

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

   478

			SetWindowDirty(w);

   479

		}	break;

   480

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

   481

			// temporarily change difficulty level

   482

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

   483

			SetWindowDirty(w);

   484

			break;

   485

		case 7: /* Highscore Table */

   486

			ShowHighscoreTable(_opt_mod_temp.diff_level, -1);

   487

			break;

   488

		case 10: { /* Save button - save changes */

   489

			int btn, val;

   490

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

   491

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

   492

				// if setting has changed, change it

   493

				if (val != ((int*)&_opt_ptr->diff)[btn])

   494

					DoCommandP(0, btn, val, NULL, CMD_CHANGE_DIFFICULTY_LEVEL);

   495

			}

   496

			DoCommandP(0, -1, _opt_mod_temp.diff_level, NULL, CMD_CHANGE_DIFFICULTY_LEVEL);

   497

			DeleteWindow(w);

   498