1

#include "stdafx.h"

     2

#include "ttd.h"

     4

#include "table/strings.h"

     5

#include "map.h"

     6

#include "tile.h"

     7

#include "station.h"

     8

#include "gfx.h"

     9

#include "window.h"

    10

#include "viewport.h"

    11

#include "command.h"

    12

#include "town.h"

    13

#include "vehicle.h"

    14

#include "news.h"

    15

#include "saveload.h"

    16

#include "economy.h"

    17

#include "player.h"

    18

#include "airport.h"

    19

#include "sprite.h"

    20

#include "npf.h"

    21

    22

enum {

    23

	/* Max stations: 64000 (64 * 1000) */

    24

	STATION_POOL_BLOCK_SIZE_BITS = 6,       /* In bits, so (1 << 6) == 64 */

    25

	STATION_POOL_MAX_BLOCKS      = 1000,

    26

    27

	/* Max roadstops: 64000 (32 * 2000) */

    28

	ROADSTOP_POOL_BLOCK_SIZE_BITS = 5,       /* In bits, so (1 << 5) == 32 */

    29

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    30

};

    31

    32

/**

    33

 * Called if a new block is added to the station-pool

    34

 */

    35

static void StationPoolNewBlock(uint start_item)

    36

{

    37

	Station *st;

    38

    39

	FOR_ALL_STATIONS_FROM(st, start_item)

    40

		st->index = start_item++;

    41

}

    42

    43

/**

    44

 * Called if a new block is added to the roadstop-pool

    45

 */

    46

static void RoadStopPoolNewBlock(uint start_item)

    47

{

    48

	RoadStop *rs;

    49

    50

	FOR_ALL_ROADSTOPS_FROM(rs, start_item)

    51

		rs->index = start_item++;

    52

}

    53

    54

/* Initialize the station-pool and roadstop-pool */

    55

MemoryPool _station_pool = { "Stations", STATION_POOL_MAX_BLOCKS, STATION_POOL_BLOCK_SIZE_BITS, sizeof(Station), &StationPoolNewBlock, 0, 0, NULL };

    56

MemoryPool _roadstop_pool = { "RoadStop", ROADSTOP_POOL_MAX_BLOCKS, ROADSTOP_POOL_BLOCK_SIZE_BITS, sizeof(RoadStop), &RoadStopPoolNewBlock, 0, 0, NULL };

    57

    58

    59

// FIXME -- need to be embedded into Airport variable. Is dynamically

    60

// deducteable from graphics-tile array, so will not be needed

    61

const byte _airport_size_x[5] = {4, 6, 1, 6, 7 };

    62

const byte _airport_size_y[5] = {3, 6, 1, 6, 7 };

    63

    64

void ShowAircraftDepotWindow(uint tile);

    65

extern void UpdateAirplanesOnNewStation(Station *st);

    66

    67

static void MarkStationDirty(Station *st)

    68

{

    69

	if (st->sign.width_1 != 0) {

    70

		InvalidateWindowWidget(WC_STATION_VIEW, st->index, 1);

    71

    72

		MarkAllViewportsDirty(

    73

			st->sign.left - 6,

    74

			st->sign.top,

    75

			st->sign.left + (st->sign.width_1 << 2) + 12,

    76

			st->sign.top + 48);

    77

	}

    78

}

    79

    80

static void InitializeRoadStop(RoadStop *road_stop, RoadStop *previous, TileIndex tile, uint index)

    81

{

    82

	road_stop->xy = tile;

    83

	road_stop->used = true;

    84

	road_stop->status = 3; //stop is free

    85

	road_stop->slot[0] = road_stop->slot[1] = INVALID_SLOT;

    86

	road_stop->next = NULL;

    87

	road_stop->prev = previous;

    88

	road_stop->station = index;

    89

}

    90

    91

inline int GetRoadStopType(TileIndex tile)

    92

{

    93

	return (_map5[tile] < 0x47) ? RS_TRUCK : RS_BUS;

    94

}

    95

    96

RoadStop * GetPrimaryRoadStop(const Station *st, RoadStopType type)

    97

{

    98

	switch (type) {

    99

		case RS_BUS: return st->bus_stops;

   100

		case RS_TRUCK: return st->truck_stops;

   101

		default:

   102

			NOT_REACHED();

   103

	}

   104

   105

	return NULL;

   106

}

   107

   108

RoadStop * GetRoadStopByTile(TileIndex tile, RoadStopType type)

   109

{

   110

	const Station *st = GetStation(_map2[tile]);

   111

	RoadStop *rs;

   112

   113

	for ( rs = GetPrimaryRoadStop(st, type); rs->xy != tile; rs = rs->next)

   114

		assert(rs->next != NULL);

   115

   116

	return rs;

   117

}

   118

   119

uint GetNumRoadStops(const Station *st, RoadStopType type)

   120

{

   121

	int num = 0;

   122

	const RoadStop *rs;

   123

   124

	assert(st != NULL);

   125

	for ( rs = GetPrimaryRoadStop(st, type); rs != NULL; num++, rs = rs->next);

   126

   127

	return num;

   128

}

   129

   130

RoadStop *AllocateRoadStop( void )

   131

{

   132

	RoadStop *rs;

   133

   134

	FOR_ALL_ROADSTOPS(rs) {

   135

		if (!rs->used) {

   136

			uint index = rs->index;

   137

   138

			memset(rs, 0, sizeof(RoadStop));

   139

			rs->index = index;

   140

   141

			return rs;

   142

		}

   143

	}

   144

   145

	/* Check if we can add a block to the pool */

   146

	if (AddBlockToPool(&_roadstop_pool))

   147

		return AllocateRoadStop();

   148

   149

	return NULL;

   150

}

   151

   152

/* Calculate the radius of the station. Basicly it is the biggest

   153

    radius that is available within the station */

   154

static byte FindCatchmentRadius(Station *st)

   155

{

   156

	byte ret = 0;

   157

   158

	if (st->bus_stops != NULL)   ret = max(ret, CA_BUS);

   159

	if (st->truck_stops != NULL) ret = max(ret, CA_TRUCK);

   160

	if (st->train_tile) ret = max(ret, CA_TRAIN);

   161

	if (st->dock_tile)  ret = max(ret, CA_DOCK);

   162

   163

	if (st->airport_tile) {

   164

		switch (st->airport_type) {

   165

			case AT_OILRIG:        ret = max(ret, CA_AIR_OILPAD);   break;

   166

			case AT_SMALL:         ret = max(ret, CA_AIR_SMALL);    break;

   167

			case AT_HELIPORT:      ret = max(ret, CA_AIR_HELIPORT); break;

   168

			case AT_LARGE:         ret = max(ret, CA_AIR_LARGE);    break;

   169

			case AT_METROPOLITAN:  ret = max(ret, CA_AIR_METRO);    break;

   170

			case AT_INTERNATIONAL: ret = max(ret, CA_AIR_INTER);    break;

   171

		}

   172

	}

   173

   174

	return ret;

   175

}

   176

   177

#define CHECK_STATIONS_ERR ((Station*)-1)

   178

   179

static Station *GetStationAround(uint tile, int w, int h, int closest_station)

   180

{

   181

	// check around to see if there's any stations there

   182

	BEGIN_TILE_LOOP(tile_cur, w + 2, h + 2, tile - TILE_XY(1,1))

   183

		if (IsTileType(tile_cur, MP_STATION)) {

   184

			int t;

   185

			t = _map2[tile_cur];

   186

			{

   187

				Station *st = GetStation(t);

   188

				// you cannot take control of an oilrig!!

   189

				if (st->airport_type == AT_OILRIG && st->facilities == (FACIL_AIRPORT|FACIL_DOCK))

   190

					continue;

   191

			}

   192

   193

			if (closest_station == -1) {

   194

				closest_station = t;

   195

			} else if (closest_station != t) {

   196

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   197

				return CHECK_STATIONS_ERR;

   198

			}

   199

		}

   200

	END_TILE_LOOP(tile_cur, w + 2, h + 2, tile - TILE_XY(1,1))

   201

	return (closest_station == -1) ? NULL : GetStation(closest_station);

   202

}

   203

   204

TileIndex GetStationTileForVehicle(const Vehicle *v, const Station *st)

   205

{

   206

	switch (v->type) {

   207

		case VEH_Train: 		return st->train_tile;

   208

		case VEH_Aircraft:	return st->airport_tile;

   209

		case VEH_Ship:			return st->dock_tile;

   210

		case VEH_Road:

   211

			if (v->cargo_type == CT_PASSENGERS) {

   212

				if (st->bus_stops != NULL)

   213

					return st->bus_stops->xy;

   214

				else

   215

					return 0;

   216

			} else {

   217

				if (st->truck_stops != NULL)

   218

					return st->truck_stops->xy;

   219

				else

   220

					return 0;

   221

			}

   222

		default:

   223

			assert(false);

   224

			return 0;

   225

	}

   226

}

   227

   228

static bool CheckStationSpreadOut(Station *st, uint tile, int w, int h)

   229

{

   230

	uint16 station_index = st->index;

   231

	uint i;

   232

	uint x1 = TileX(tile);

   233

	uint y1 = TileY(tile);

   234

	uint x2 = x1 + w - 1;

   235

	uint y2 = y1 + h - 1;

   236

	uint t;

   237

   238

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

   239

		if (IsTileType(i, MP_STATION) && _map2[i] == station_index) {

   240

			t = TileX(i);

   241

			if (t < x1) x1 = t;

   242

			if (t > x2) x2 = t;

   243

   244

			t = TileY(i);

   245

			if (t < y1) y1 = t;

   246

			if (t > y2) y2 = t;

   247

		}

   248

	}

   249

   250

	if (y2-y1 >= _patches.station_spread || x2-x1 >= _patches.station_spread) {

   251

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   252

		return false;

   253

	}

   254

   255

	return true;

   256

}

   257

   258

static Station *AllocateStation(void)

   259

{

   260

	Station *st = NULL;

   261

   262

	FOR_ALL_STATIONS(st) {

   263

		if (st->xy == 0) {

   264

			uint index = st->index;

   265

   266

			memset(st, 0, sizeof(Station));

   267

			st->index = index;

   268

   269

			return st;

   270

		}

   271

	}

   272

   273

	/* Check if we can add a block to the pool */

   274

	if (AddBlockToPool(&_station_pool))

   275

		return AllocateStation();

   276

   277

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   278

	return NULL;

   279

}

   280

   281

   282

static int CountMapSquareAround(uint tile, byte type, byte min, byte max) {

   283

	static const TileIndexDiffC _count_square_table[] = {

   284

		{-3, -3}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   285

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   286

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   287

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   288

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   289

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},

   290

		{-6,  1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}

   291

	};

   292

	const TileIndexDiffC *p;

   293

	int num = 0;

   294

   295

	for (p = _count_square_table; p != endof(_count_square_table); ++p) {

   296

		tile = TILE_MASK(tile + ToTileIndexDiff(*p));

   297

   298

		if (IsTileType(tile, type) && _map5[tile] >= min && _map5[tile] <= max)

   299

			num++;

   300

	}

   301

   302

	return num;

   303

}

   304

   305

#define M(x) ((x) - STR_SV_STNAME)

   306

   307

static bool GenerateStationName(Station *st, uint tile, int flag)

   308

{

   309

	static const uint32 _gen_station_name_bits[] = {

   310

		0,																/* 0 */

   311

		1 << M(STR_SV_STNAME_AIRPORT),		/* 1 */

   312

		1 << M(STR_SV_STNAME_OILFIELD),		/* 2 */

   313

		1 << M(STR_SV_STNAME_DOCKS),			/* 3 */

   314

		0x1FF << M(STR_SV_STNAME_BUOY_1),	/* 4 */

   315

		1 << M(STR_SV_STNAME_HELIPORT),		/* 5 */

   316

	};

   317

   318

	Town *t = st->town;

   319

	uint32 free_names = (uint32)-1;

   320

	int found;

   321

	uint z,z2;

   322

	unsigned long tmp;

   323

   324

	{

   325

		Station *s;

   326

   327

		FOR_ALL_STATIONS(s) {

   328

			if (s != st && s->xy != 0 && s->town==t) {

   329

				uint str = M(s->string_id);

   330

				if (str <= 0x20) {

   331

					if (str == M(STR_SV_STNAME_FOREST))

   332

						str = M(STR_SV_STNAME_WOODS);

   333

					CLRBIT(free_names, str);

   334

				}

   335

			}

   336

		}

   337

	}

   338

   339

	/* check default names */

   340

	tmp = free_names & _gen_station_name_bits[flag];

   341

	if (tmp != 0) {

   342

		found = FindFirstBit(tmp);

   343

		goto done;

   344

	}

   345

   346

	/* check mine? */

   347

	if (HASBIT(free_names, M(STR_SV_STNAME_MINES))) {

   348

		if (CountMapSquareAround(tile, MP_INDUSTRY, 0, 6) >= 2 ||

   349

		    CountMapSquareAround(tile, MP_INDUSTRY, 0x64, 0x73) >= 2 ||

   350

				CountMapSquareAround(tile, MP_INDUSTRY, 0x2F, 0x33) >= 2 ||

   351

				CountMapSquareAround(tile, MP_INDUSTRY, 0x48, 0x58) >= 2 ||

   352

				CountMapSquareAround(tile, MP_INDUSTRY, 0x5B, 0x63) >= 2) {

   353

					found = M(STR_SV_STNAME_MINES);

   354

					goto done;

   355

				}

   356

	}

   357

   358

	/* check close enough to town to get central as name? */

   359

	if (DistanceMax(tile,t->xy) < 8) {

   360

		found = M(STR_SV_STNAME);

   361

		if (HASBIT(free_names, M(STR_SV_STNAME))) goto done;

   362

   363

		found = M(STR_SV_STNAME_CENTRAL);

   364

		if (HASBIT(free_names, M(STR_SV_STNAME_CENTRAL))) goto done;

   365

	}

   366

   367

	/* Check lakeside */

   368

	if (HASBIT(free_names, M(STR_SV_STNAME_LAKESIDE)) &&

   369

			DistanceFromEdge(tile) < 20 &&

   370

			CountMapSquareAround(tile, MP_WATER, 0, 0) >= 5) {

   371

				found = M(STR_SV_STNAME_LAKESIDE);

   372

				goto done;

   373

			}

   374

   375

	/* Check woods */

   376

	if (HASBIT(free_names, M(STR_SV_STNAME_WOODS)) && (

   377

			CountMapSquareAround(tile, MP_TREES, 0, 255) >= 8 ||

   378

			CountMapSquareAround(tile, MP_INDUSTRY, 0x10, 0x11) >= 2 )) {

   379

				found = (_opt.landscape==LT_DESERT) ? M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   380

				goto done;

   381

	}

   382

   383

	/* check elevation compared to town */

   384

	z = GetTileZ(tile);

   385

	z2 = GetTileZ(t->xy);

   386

	if (z < z2) {

   387

		found = M(STR_SV_STNAME_VALLEY);

   388

		if (HASBIT(free_names, M(STR_SV_STNAME_VALLEY))) goto done;

   389

	} else if (z > z2) {

   390

		found = M(STR_SV_STNAME_HEIGHTS);

   391

		if (HASBIT(free_names, M(STR_SV_STNAME_HEIGHTS))) goto done;

   392

	}

   393

   394

	/* check direction compared to town */

   395

	{

   396

		static const int8 _direction_and_table[] = {

   397

			~( (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_EAST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   398

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   399

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_EAST)) | (1<<M(STR_SV_STNAME_NORTH)) ),

   400

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (1<<M(STR_SV_STNAME_WEST)) | (1<<M(STR_SV_STNAME_EAST)) ),

   401

		};

   402

   403

		free_names &= _direction_and_table[

   404

			(TileX(tile) < TileX(t->xy)) +

   405

			(TileY(tile) < TileY(t->xy)) * 2];

   406

	}

   407

   408

	tmp = free_names & ((1<<1)|(1<<2)|(1<<3)|(1<<4)|(1<<6)|(1<<7)|(1<<12)|(1<<26)|(1<<27)|(1<<28)|(1<<29)|(1<<30));

   409

	if (tmp == 0) {

   410

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   411

		return false;

   412

	}

   413

	found = FindFirstBit(tmp);

   414

   415

done:

   416

	st->string_id = found + STR_SV_STNAME;

   417

	return true;

   418

}

   419

#undef M

   420

   421

static Station *GetClosestStationFromTile(uint tile, uint threshold, byte owner)

   422

{

   423

	Station *st, *best_station = NULL;

   424

	uint cur_dist;

   425

   426

	FOR_ALL_STATIONS(st) {

   427

		cur_dist = DistanceManhattan(tile, st->xy);

   428

		if (cur_dist < threshold && (owner == 0xFF || st->owner == owner) && (st->xy != 0)) {

   429

			threshold = cur_dist;

   430

			best_station = st;

   431

		}

   432

	}

   433

   434

	return best_station;

   435

}

   436

   437

static void StationInitialize(Station *st, TileIndex tile)

   438

{

   439

	int i;

   440

	GoodsEntry *ge;

   441

   442

	st->xy = tile;

   443

	st->airport_tile = st->dock_tile = st->train_tile = 0;

   444

	st->bus_stops = st->truck_stops = NULL;

   445

	st->had_vehicle_of_type = 0;

   446

	st->time_since_load = 255;

   447

	st->time_since_unload = 255;

   448

	st->delete_ctr = 0;

   449

	st->facilities = 0;

   450

   451

	st->last_vehicle = INVALID_VEHICLE;

   452

   453

	for(i=0,ge=st->goods; i!=NUM_CARGO; i++, ge++) {

   454

		ge->waiting_acceptance = 0;

   455

		ge->days_since_pickup = 0;

   456

		ge->enroute_from = INVALID_STATION;

   457

		ge->rating = 175;

   458

		ge->last_speed = 0;

   459

		ge->last_age = 0xFF;

   460

	}

   461

   462

	_global_station_sort_dirty = true; // build a new station

   463

}

   464

   465

// Update the virtual coords needed to draw the station sign.

   466

// st = Station to update for.

   467

static void UpdateStationVirtCoord(Station *st)

   468

{

   469

	Point pt = RemapCoords2(TileX(st->xy) * 16, TileY(st->xy) * 16);

   470

   471

	pt.y -= 32;

   472

	if (st->facilities & FACIL_AIRPORT && st->airport_type == AT_OILRIG) pt.y -= 16;

   473

   474

	SetDParam(0, st->index);

   475

	SetDParam(1, st->facilities);

   476

	UpdateViewportSignPos(&st->sign, pt.x, pt.y, STR_305C_0);

   477

}

   478

   479

// Update the virtual coords needed to draw the station sign for all stations.

   480

void UpdateAllStationVirtCoord(void)

   481

{

   482

	Station *st;

   483

	FOR_ALL_STATIONS(st) {

   484

		if (st->xy != 0)

   485

			UpdateStationVirtCoord(st);

   486

	}

   487

}

   488

   489

// Update the station virt coords while making the modified parts dirty.

   490

static void UpdateStationVirtCoordDirty(Station *st)

   491

{

   492

	MarkStationDirty(st);

   493

	UpdateStationVirtCoord(st);

   494

	MarkStationDirty(st);

   495

}

   496

   497

// Get a mask of the cargo types that the station accepts.

   498

static uint GetAcceptanceMask(Station *st)

   499

{

   500

	uint mask = 0;

   501

	uint cur_mask = 1;

   502

	int i;

   503

	for(i=0; i!=NUM_CARGO; i++,cur_mask*=2) {

   504

		if (st->goods[i].waiting_acceptance & 0x8000)

   505

			mask |= cur_mask;

   506

	}

   507

	return mask;