1

#include "stdafx.h"

     2

#include "ttd.h"

     3

     4

#include "window.h"

     5

#include "gui.h"

     6

#include "viewport.h"

     7

#include "gfx.h"

     8

#include "sound.h"

     9

#include "command.h"

    10

#include "vehicle.h"

    11

    12

static uint _cur_railtype;

    13

static bool _remove_button_clicked;

    14

static byte _build_depot_direction;

    15

    16

struct {

    17

	byte orientation;

    18

	byte numtracks;

    19

	byte platlength;

    20

	bool dragdrop;

    21

} _railstation;

    22

    23

    24

static void HandleStationPlacement(uint start, uint end);

    25

static void ShowBuildTrainDepotPicker();

    26

static void ShowStationBuilder();

    27

    28

typedef void OnButtonClick(Window *w);

    29

    30

static void CcPlaySound1E(bool success, uint tile, uint32 p1, uint32 p2)

    31

{

    32

	if (success) SndPlayTileFx(0x1E, tile);

    33

}

    34

    35

static void GenericPlaceRail(uint tile, int cmd)

    36

{

    37

	DoCommandP(tile, _cur_railtype, cmd, CcPlaySound1E,

    38

		_remove_button_clicked ?

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		CMD_REMOVE_SINGLE_RAIL | CMD_MSG(STR_1012_CAN_T_REMOVE_RAILROAD_TRACK) | CMD_AUTO | CMD_NO_WATER :

    40

		CMD_BUILD_SINGLE_RAIL | CMD_MSG(STR_1011_CAN_T_BUILD_RAILROAD_TRACK) | CMD_AUTO | CMD_NO_WATER

    41

		);

    42

}

    43

    44

static void PlaceRail_N(uint tile)

    45

{

    46

	int cmd = _tile_fract_coords.x > _tile_fract_coords.y ? 4 : 5;

    47

	GenericPlaceRail(tile, cmd);

    48

}

    49

    50

static void PlaceRail_NE(uint tile)

    51

{

    52

	VpStartPlaceSizing(tile, VPM_FIX_Y);

    53

}

    54

    55

static void PlaceRail_E(uint tile)

    56

{

    57

	int cmd = _tile_fract_coords.x + _tile_fract_coords.y <= 15 ? 2 : 3;

    58

	GenericPlaceRail(tile, cmd);

    59

}

    60

    61

static void PlaceRail_NW(uint tile)

    62

{

    63

	VpStartPlaceSizing(tile, VPM_FIX_X);

    64

}

    65

    66

static void PlaceRail_AutoRail(uint tile)

    67

{

    68

	VpStartPlaceSizing(tile, VPM_RAILDIRS);

    69

}

    70

    71

static int16 _place_depot_offs_xy[4] = { -1,	0x100,	1,	-0x100};

    72

    73

static void PlaceExtraDepotRail(uint tile, uint16 extra)

    74

{

    75

	byte b = _map5[tile];

    76

    77

	if (b & 0xC0 || !(b & (extra >> 8)))

    78

		return;

    79

    80

	DoCommandP(tile, _cur_railtype, extra & 0xFF, NULL, CMD_BUILD_SINGLE_RAIL | CMD_AUTO | CMD_NO_WATER);

    81

}

    82

    83

static const uint16 _place_depot_extra[12] = {

    84

	0x604,		0x2102,		0x1202,		0x505,

    85

	0x2400,		0x2801,		0x1800,		0x1401,

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	0x2203,		0x904,		0x0A05,		0x1103,

    87

};

    88

    89

    90

static void CcDepot(bool success, uint tile, uint32 p1, uint32 p2)

    91

{

    92

	if (success) {

    93

		int dir = p2;

    94

    95

		SndPlayTileFx(0x1E, tile);

    96

		ResetObjectToPlace();

    97

    98

		tile += _place_depot_offs_xy[dir];

    99

   100

		if (IS_TILETYPE(tile, MP_RAILWAY)) {

   101

			PlaceExtraDepotRail(tile, _place_depot_extra[dir]);

   102

			PlaceExtraDepotRail(tile, _place_depot_extra[dir + 4]);

   103

			PlaceExtraDepotRail(tile, _place_depot_extra[dir + 8]);

   104

		}

   105

	}

   106

}

   107

   108

static void PlaceRail_Depot(uint tile)

   109

{

   110

	DoCommandP(tile, _cur_railtype, _build_depot_direction, CcDepot,

   111

		CMD_BUILD_TRAIN_DEPOT | CMD_AUTO | CMD_NO_WATER | CMD_MSG(STR_100E_CAN_T_BUILD_TRAIN_DEPOT));

   112

}

   113

   114

static void PlaceRail_Checkpoint(uint tile)

   115

{

   116

	if (!_remove_button_clicked) {

   117

		DoCommandP(tile, 0, 0, CcPlaySound1E, CMD_BUILD_TRAIN_CHECKPOINT | CMD_MSG(STR_CANT_BUILD_TRAIN_CHECKPOINT));

   118

	} else {

   119

		DoCommandP(tile, 0, 0, CcPlaySound1E, CMD_REMOVE_TRAIN_CHECKPOINT | CMD_MSG(STR_CANT_REMOVE_TRAIN_CHECKPOINT));

   120

	}

   121

}

   122

   123

static void CcStation(bool success, uint tile, uint32 p1, uint32 p2)

   124

{

   125

	if (success) {

   126

		SndPlayTileFx(0x1E, tile);

   127

		ResetObjectToPlace();

   128

	}

   129

}

   130

   131

static void PlaceRail_Station(uint tile)

   132

{

   133

	if(_remove_button_clicked)

   134

		DoCommandP(tile, 0, 0, CcPlaySound1E, CMD_REMOVE_FROM_RAILROAD_STATION | CMD_MSG(STR_CANT_REMOVE_PART_OF_STATION));

   135

	else if (_railstation.dragdrop) {

   136

		VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED);

   137

		VpSetPlaceSizingLimit(_patches.station_spread);

   138

	} else {

   139

		DoCommandP(tile, _railstation.orientation | (_railstation.numtracks<<8) | (_railstation.platlength<<16),_cur_railtype, CcStation,

   140

				CMD_BUILD_RAILROAD_STATION | CMD_NO_WATER | CMD_AUTO | CMD_MSG(STR_100F_CAN_T_BUILD_RAILROAD_STATION));

   141

	}

   142

}

   143

   144

static void GenericPlaceSignals(uint tile)

   145

{

   146

	uint trackstat;

   147

	int i;

   148

   149

	trackstat = (byte)GetTileTrackStatus(tile, TRANSPORT_RAIL);

   150

   151

	if ((trackstat & 0x30) == 0x30) {

   152

		trackstat = (_tile_fract_coords.x <= _tile_fract_coords.y) ? 0x20 : 0x10;

   153

	}

   154

   155

	if ((trackstat & 0x0C) == 0x0C) {

   156

		trackstat = (_tile_fract_coords.x + _tile_fract_coords.y <= 15) ? 4 : 8;

   157

	}

   158

   159

	// Lookup the bit index

   160

	i = 0;

   161

	if (trackstat != 0) {	while (!(trackstat & 1)) { i++; trackstat >>= 1; }}

   162

   163

	if (!_remove_button_clicked) {

   164

		DoCommandP(tile, i + (_ctrl_pressed ? 8 : 0), 0, CcPlaySound1E,

   165

			CMD_BUILD_SIGNALS | CMD_AUTO | CMD_MSG(STR_1010_CAN_T_BUILD_SIGNALS_HERE));

   166

	} else {

   167

		DoCommandP(tile, i, 0, CcPlaySound1E,

   168

			CMD_REMOVE_SIGNALS | CMD_AUTO | CMD_MSG(STR_1013_CAN_T_REMOVE_SIGNALS_FROM));

   169

	}

   170

}

   171

   172

static void PlaceRail_Bridge(uint tile)

   173

{

   174

	VpStartPlaceSizing(tile, VPM_X_OR_Y);

   175

}

   176

   177

static void CcBuildTunnel(bool success, uint tile, uint32 p1, uint32 p2)

   178

{

   179

	if (success) {

   180

		SndPlayTileFx(0x1E, tile);

   181

		ResetObjectToPlace();

   182

	} else {

   183

		SetRedErrorSquare(_build_tunnel_endtile);

   184

	}

   185

}

   186

   187

static void PlaceRail_Tunnel(uint tile)

   188

{

   189

	DoCommandP(tile, _cur_railtype, 0, CcBuildTunnel,

   190

		CMD_BUILD_TUNNEL | CMD_AUTO | CMD_MSG(STR_5016_CAN_T_BUILD_TUNNEL_HERE));

   191

}

   192

   193

void PlaceProc_BuyLand(uint tile)

   194

{

   195

	DoCommandP(tile, 0, 0, CcPlaySound1E, CMD_PURCHASE_LAND_AREA | CMD_AUTO | CMD_NO_WATER | CMD_MSG(STR_5806_CAN_T_PURCHASE_THIS_LAND));

   196

}

   197

   198

static void PlaceRail_ConvertRail(uint tile)

   199

{

   200

	VpStartPlaceSizing(tile, VPM_X_AND_Y | (1<<4));

   201

}

   202

   203

static void PlaceRail_AutoSignals(uint tile)

   204

{

   205

	VpStartPlaceSizing(tile, VPM_SIGNALDIRS);

   206

}

   207

   208

static void BuildRailClick_AutoRail(Window *w)

   209

{

   210

	HandlePlacePushButton(w, 3, _cur_railtype + SPR_OPENTTD_BASE + 4, 1, PlaceRail_AutoRail);

   211

}

   212

   213

static void BuildRailClick_N(Window *w)

   214

{

   215

	HandlePlacePushButton(w, 4, _cur_railtype*4 + 0x4EF, 1, PlaceRail_N);

   216

}

   217

   218

static void BuildRailClick_NE(Window *w)

   219

{

   220

	HandlePlacePushButton(w, 5, _cur_railtype*4 + 0x4F0, 1, PlaceRail_NE);

   221

}

   222

   223

static void BuildRailClick_E(Window *w)

   224

{

   225

	HandlePlacePushButton(w, 6, _cur_railtype*4 + 0x4F1, 1, PlaceRail_E);

   226

}

   227

   228

static void BuildRailClick_NW(Window *w)

   229

{

   230

	HandlePlacePushButton(w, 7, _cur_railtype*4 + 0x4F2, 1, PlaceRail_NW);

   231

}

   232

   233

static void BuildRailClick_Demolish(Window *w)

   234

{

   235

	HandlePlacePushButton(w, 8, ANIMCURSOR_DEMOLISH, 1, PlaceProc_DemolishArea);

   236

}

   237

   238

static void BuildRailClick_Lower(Window *w)

   239

{

   240

	HandlePlacePushButton(w, 9, ANIMCURSOR_LOWERLAND, 2, PlaceProc_LowerLand);

   241

}

   242

   243

static void BuildRailClick_Raise(Window *w)

   244

{

   245

	HandlePlacePushButton(w, 10, ANIMCURSOR_RAISELAND, 2, PlaceProc_RaiseLand);

   246

}

   247

   248

static const SpriteID _depot_cursors[] = {

   249

	0x510,

   250

	SPR_OPENTTD_BASE + 14,

   251

	SPR_OPENTTD_BASE + 15,

   252

};

   253

   254

static void BuildRailClick_Depot(Window *w)

   255

{

   256

	if (HandlePlacePushButton(w, 11, _depot_cursors[_cur_railtype], 1, PlaceRail_Depot)) ShowBuildTrainDepotPicker();

   257

}

   258

   259

static void BuildRailClick_Station(Window *w)

   260

{

   261

	if (HandlePlacePushButton(w, 12, 0x514, 1, PlaceRail_Station)) ShowStationBuilder();

   262

}

   263

   264

static void BuildRailClick_AutoSignals(Window *w)

   265

{

   266

	HandlePlacePushButton(w, 13, ANIMCURSOR_BUILDSIGNALS , 1, PlaceRail_AutoSignals);

   267

}

   268

   269

static void BuildRailClick_Bridge(Window *w)

   270

{

   271

	HandlePlacePushButton(w, 14, 0xA21, 1, PlaceRail_Bridge);

   272

}

   273

   274

static void BuildRailClick_Tunnel(Window *w)

   275

{

   276

	HandlePlacePushButton(w, 15, 0x982 + _cur_railtype, 3, PlaceRail_Tunnel);

   277

}

   278

   279

static void BuildRailClick_Remove(Window *w)

   280

{

   281

	if (w->disabled_state & (1<<16))

   282

		return;

   283

	SetWindowDirty(w);

   284

	SndPlayFx(0x13);

   285

   286

	_thd.make_square_red = !!((w->click_state ^= (1 << 16)) & (1<<16));

   287

	_remove_button_clicked = (w->click_state & (1 << 16)) != 0;

   288

   289

	// handle station builder

   290

	if( w->click_state & (1 << 12) )

   291

	{

   292

		if(_remove_button_clicked)

   293

			SetTileSelectSize(1, 1);

   294

		else

   295

			BringWindowToFrontById(WC_BUILD_STATION, 0);

   296

	}

   297

}

   298

   299

static void BuildRailClick_Sign(Window *w)

   300

{

   301

	HandlePlacePushButton(w, 17, 0x12B8, 1, PlaceProc_BuyLand);

   302

}

   303

   304

static void BuildRailClick_Checkpoint(Window *w)

   305

{

   306

	HandlePlacePushButton(w, 18, SPR_OPENTTD_BASE + 7, 1, PlaceRail_Checkpoint);

   307

}

   308

   309

static void BuildRailClick_Convert(Window *w)

   310

{

   311

	HandlePlacePushButton(w, 19, (SPR_OPENTTD_BASE + 26) + _cur_railtype * 2, 1, PlaceRail_ConvertRail);

   312

}

   313

   314

   315

static void DoRailroadTrack(int mode)

   316

{

   317

	DoCommandP(TILE_FROM_XY(_thd.selstart.x, _thd.selstart.y), PACK_POINT(_thd.selend.x, _thd.selend.y), (mode << 4) | _cur_railtype, NULL,

   318

		_remove_button_clicked ?

   319

		CMD_REMOVE_RAILROAD_TRACK | CMD_AUTO | CMD_NO_WATER | CMD_MSG(STR_1012_CAN_T_REMOVE_RAILROAD_TRACK) :

   320

		CMD_BUILD_RAILROAD_TRACK | CMD_AUTO | CMD_NO_WATER | CMD_MSG(STR_1011_CAN_T_BUILD_RAILROAD_TRACK)

   321

	);

   322

}

   323

   324

typedef struct {

   325

	byte bit, a,b, mouse;

   326

} BestFitStruct;

   327

   328

#define M(d,m) (d << 6) | (m)

   329

static const BestFitStruct _bestfit[] = {

   330

	// both edges have rail

   331

	{2, M(0, 1+8), M(3, 2+8), 0}, // upper track

   332

	{3, M(2, 1+4), M(1, 2+4), 0}, // lower track

   333

   334

	{4, M(2, 1+32), M(3, 2+32), 1<<2}, // left track

   335

	{5, M(0, 1+16), M(1, 2+16), 1<<3}, // right track

   336

   337

	{0, M(0,1+8+16), M(2,1+4+32), 0}, // diag1 track

   338

	{1, M(3,2+8+32), M(1,2+4+16), 0}, // diag2 track

   339

   340

	// one edge with rail

   341

	{0, M(0,1), 0, 0}, // diag1 track

   342

	{0, M(2,1), 0, 0}, // diag1 track

   343

   344

	{1, M(1,2), 0, 0}, // diag2 track

   345

	{1, M(3,2), 0, 0}, // diag2 track

   346

   347

	{2, M(0,8), 0, 1<<0}, // upper track

   348

	{2, M(3,8), 0, 1<<0}, // upper track

   349

   350

	{3, M(1,4), 0, 1<<1}, // lower track

   351

	{3, M(2,4), 0, 1<<1}, // lower track

   352

   353

	{4, M(2,32), 0, 1<<2}, // left track

   354

	{4, M(3,32), 0, 1<<2}, // left track

   355

   356

	{5, M(0,16), 0, 1<<3}, // right track

   357

	{5, M(1,16), 0, 1<<3}, // right track

   358

   359

	{0xff, 0, 0, 0},

   360

};

   361

#undef M

   362

   363

static int GetBestArea(int x, int y)

   364

{

   365

	int r = 0;

   366

	if (x + y > 0x10) r += 2;

   367

	else if (x + y == 0x10) return -1;

   368

	if (y - x > 0) r += 1;

   369

	else if (y - x == 0) return -1;

   370

	return r;

   371

}

   372

   373

int GetBestFit1x1(int x, int y)

   374

{

   375

	byte m[5];

   376

	const BestFitStruct *bfs;

   377

	byte mouse;

   378

	uint tile;

   379

	int best;

   380

	int i;

   381

   382

	// determine the mouse regions

   383

	mouse = ((x & 0xF) + (y & 0xF) < 0x10 ? 1 << 0 : 1 << 1) +

   384

					((x & 0xF) > (y & 0xF) ? 1 << 2 : 1 << 3);

   385

   386

	// get the rail in each direction

   387

	tile = TILE_FROM_XY(x,y);

   388

	for(i=0; i!=5; i++) {

   389

		static TileIndexDiff _tile_inc[5] = {

   390

			TILE_XY(-1, 0),

   391

			TILE_XY(0, 1) - TILE_XY(-1, 0),

   392

			TILE_XY(1, 0) - TILE_XY(0, 1),

   393

			TILE_XY(0, -1) - TILE_XY(1, 0),

   394

			TILE_XY(0, 0) - TILE_XY(0, -1),

   395

		};

   396

		tile += _tile_inc[i];

   397

		m[i] = 0;

   398

		if (IS_TILETYPE(tile, MP_RAILWAY) && _map5[tile] < 0x80)

   399

			m[i] = _map5[tile]&0x3F;

   400

   401

		// handle tracks under bridge

   402

		if(IS_TILETYPE(tile, MP_TUNNELBRIDGE) && (_map5[tile]&0xF8)==0xE0)

   403

			m[i] = (byte) !(_map5[tile]&0x01) + 1;

   404

   405

		if (_remove_button_clicked) m[i] ^= 0x3F;

   406

	}

   407

   408

	// check "mouse gesture"?

   409

	{

   410

		int a1,a2;

   411

		if ((a1 = GetBestArea(x & 0xF, y & 0xF)) != -1 && (a2 = GetBestArea(_tile_fract_coords.x, _tile_fract_coords.y)) != -1 && a1 != a2) {

   412

			static const byte _get_dir_by_areas[4][4] = {

   413

				{0,2,4,1},

   414

				{2,0,0,5},

   415

				{4,0,0,3},

   416

				{1,5,3,0},

   417

			};

   418

			i = _get_dir_by_areas[a2][a1];

   419

			if (!HASBIT(m[4], i))

   420

				return i;

   421

		}

   422

	}

   423

	// check each bestfit struct

   424

	for(bfs = _bestfit, best=-1; bfs->bit != 0xFF; bfs++) {

   425

		if ((bfs->a & m[bfs->a >> 6]) && (!bfs->b || bfs->b & m[bfs->b >> 6]) && !HASBIT(m[4], bfs->bit)) {

   426

			if ( (byte)(~mouse & bfs->mouse) == 0)

   427

				return bfs->bit;

   428

			if (best != -1)

   429

				return best;

   430

			best = bfs->bit;

   431

		}

   432

	}

   433

   434

	return best;

   435

}

   436

   437

static void SwapSelection()

   438

{

   439

	TileHighlightData *thd = &_thd;

   440

	Point pt = thd->selstart;

   441

	thd->selstart.x = thd->selend.x & ~0xF;

   442

	thd->selstart.y = thd->selend.y & ~0xF;

   443

	thd->selend = pt;

   444

}

   445

   446

static bool Check2x1AutoRail(int mode)

   447

{

   448

	TileHighlightData *thd = &_thd;

   449

	int fxpy = _tile_fract_coords.x + _tile_fract_coords.y;

   450

	int sxpy = (thd->selend.x & 0xF) + (thd->selend.y & 0xF);

   451

	int fxmy = _tile_fract_coords.x - _tile_fract_coords.y;

   452

	int sxmy = (thd->selend.x & 0xF) - (thd->selend.y & 0xF);

   453

   454

	switch(mode) {

   455

	case 0:

   456

		if (fxpy >= 20 && sxpy <= 12) { SwapSelection(); DoRailroadTrack(0); return true; }

   457

		if (fxmy < -3 && sxmy > 3) { DoRailroadTrack(0); return true; }

   458

		break;

   459

   460

	case 1:

   461

		if (fxmy > 3 && sxmy < -3) { SwapSelection(); DoRailroadTrack(0); return true; }

   462

		if (fxpy <= 12 && sxpy >= 20) { DoRailroadTrack(0); return true; }

   463

		break;

   464

   465

	case 2:

   466

		if (fxmy > 3 && sxmy < -3) { DoRailroadTrack(3); return true; }

   467

		if (fxpy >= 20 && sxpy <= 12) { SwapSelection(); DoRailroadTrack(0); return true; }

   468

		break;

   469

   470

	case 3:

   471

		if (fxmy < -3 && sxmy > 3) { SwapSelection(); DoRailroadTrack(3); return true; }

   472

		if (fxpy <= 12 && sxpy >= 20) { DoRailroadTrack(0); return true; }

   473

		break;

   474

	}

   475

   476

	return false;

   477

}

   478

   479

   480

static void HandleAutodirPlacement()

   481

{

   482

	TileHighlightData *thd = &_thd;

   483

	int bit;

   484

   485

	if (thd->drawstyle == HT_RECT) {

   486

		int dx = thd->selstart.x - (thd->selend.x&~0xF);

   487

		int dy = thd->selstart.y - (thd->selend.y&~0xF);

   488

   489

		if (dx == 0 && dy == 0 ) {

   490

			// 1x1 tile

   491

			bit = GetBestFit1x1(thd->selend.x, thd->selend.y);

   492

			if (bit == -1) return;

   493

			GenericPlaceRail(TILE_FROM_XY(thd->selend.x, thd->selend.y), bit);

   494

		} else if (dx == 0) {

   495

			if (dy == -16) {

   496

				if (Check2x1AutoRail(0)) return;

   497

			} else if (dy == 16) {

   498

				if (Check2x1AutoRail(1)) return;

   499

			}

   500

			// same x coordinate

   501

			DoRailroadTrack(VPM_FIX_X);

   502

		} else {

   503

			// same y coordinate

   504

			// check it's it -16 or 16, then we must check if it should be normal tiles or special tiles.

   505

			if (dx == -16) {

   506

				if (Check2x1AutoRail(2)) return;

   507

			} else if (dx == 16) {

   508

				if (Check2x1AutoRail(3)) return;

   509

			}

   510

			DoRailroadTrack(VPM_FIX_Y);

   511

		}

   512

	} else {

   513

		DoRailroadTrack(thd->drawstyle & 1 ? 0 : 3);

   514

	}

   515

}

   516

   517

static void HandleAutoSignalPlacement()

   518

{

   519

	TileHighlightData *thd = &_thd;

   520

	int mode = 0;

   521

	uint trackstat = 0;

   522

   523

	int dx = thd->selstart.x - (thd->selend.x&~0xF);

   524

	int dy = thd->selstart.y - (thd->selend.y&~0xF);