1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "map.h"

     5

#include "tile.h"

     6

#include "station.h"

     7

#include "gfx.h"

     8

#include "window.h"

     9

#include "viewport.h"

    10

#include "command.h"

    11

#include "town.h"

    12

#include "vehicle.h"

    13

#include "news.h"

    14

#include "saveload.h"

    15

#include "economy.h"

    16

#include "player.h"

    17

#include "airport.h"

    18

#include "sprite.h"

    19

#include "npf.h"

    20

    21

enum {

    22

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

    23

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

    24

	STATION_POOL_MAX_BLOCKS      = 1000,

    25

    26

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

    27

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

    28

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    29

};

    30

    31

/**

    32

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

    33

 */

    34

static void StationPoolNewBlock(uint start_item)

    35

{

    36

	Station *st;

    37

    38

	FOR_ALL_STATIONS_FROM(st, start_item)

    39

		st->index = start_item++;

    40

}

    41

    42

/**

    43

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

    44

 */

    45

static void RoadStopPoolNewBlock(uint start_item)

    46

{

    47

	RoadStop *rs;

    48

    49

	FOR_ALL_ROADSTOPS_FROM(rs, start_item)

    50

		rs->index = start_item++;

    51

}

    52

    53

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

    54

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

    55

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

    56

    57

    58

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

    59

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

    60

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

    61

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

    62

    63

void ShowAircraftDepotWindow(uint tile);

    64

extern void UpdateAirplanesOnNewStation(Station *st);

    65

    66

static void MarkStationDirty(Station *st)

    67

{

    68

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

    69

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

    70

    71

		MarkAllViewportsDirty(

    72

			st->sign.left - 6,

    73

			st->sign.top,

    74

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

    75

			st->sign.top + 48);

    76

	}

    77

}

    78

    79

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

    80

{

    81

	road_stop->xy = tile;

    82

	road_stop->used = true;

    83

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

    84

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

    85

	road_stop->next = NULL;

    86

	road_stop->prev = previous;

    87

	road_stop->station = index;

    88

}

    89

    90

inline int GetRoadStopType(TileIndex tile)

    91

{

    92

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

    93

}

    94

    95

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

    96

{

    97

	switch (type) {

    98

		case RS_BUS: return st->bus_stops;

    99

		case RS_TRUCK: return st->truck_stops;

   100

		default:

   101

			NOT_REACHED();

   102

	}

   103

   104

	return NULL;

   105

}

   106

   107

RoadStop * GetRoadStopByTile(TileIndex tile, RoadStopType type)

   108

{

   109

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

   110

	RoadStop *rs;

   111

   112

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

   113

		assert(rs->next != NULL);

   114

   115

	return rs;

   116

}

   117

   118

uint GetNumRoadStops(const Station *st, RoadStopType type)

   119

{

   120

	int num = 0;

   121

	const RoadStop *rs;

   122

   123

	assert(st != NULL);

   124

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

   125

   126

	return num;

   127

}

   128

   129

RoadStop *AllocateRoadStop( void )

   130

{

   131

	RoadStop *rs;

   132

   133

	FOR_ALL_ROADSTOPS(rs) {

   134

		if (!rs->used) {

   135

			uint index = rs->index;

   136

   137

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

   138

			rs->index = index;

   139

   140

			return rs;

   141

		}

   142

	}

   143

   144

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

   145

	if (AddBlockToPool(&_roadstop_pool))

   146

		return AllocateRoadStop();

   147

   148

	return NULL;

   149

}

   150

   151

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

   152

    radius that is available within the station */

   153

static byte FindCatchmentRadius(Station *st)

   154

{

   155

	byte ret = 0;

   156

   157

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

   158

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

   159

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

   160

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

   161

   162

	if (st->airport_tile) {

   163

		switch (st->airport_type) {

   164

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

   165

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

   166

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

   167

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

   168

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

   169

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

   170

		}

   171

	}

   172

   173

	return ret;

   174

}

   175

   176

#define CHECK_STATIONS_ERR ((Station*)-1)

   177

   178

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

   179

{

   180

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

   181

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

   182

		if (IsTileType(tile_cur, MP_STATION)) {

   183

			int t;

   184

			t = _map2[tile_cur];

   185

			{

   186

				Station *st = GetStation(t);

   187

				// you cannot take control of an oilrig!!

   188

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

   189

					continue;

   190

			}

   191

   192

			if (closest_station == -1) {

   193

				closest_station = t;

   194

			} else if (closest_station != t) {

   195

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   196

				return CHECK_STATIONS_ERR;

   197

			}

   198

		}

   199

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

   200

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

   201

}

   202

   203

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

   204

{

   205

	switch (v->type) {

   206

		case VEH_Train: 		return st->train_tile;

   207

		case VEH_Aircraft:	return st->airport_tile;

   208

		case VEH_Ship:			return st->dock_tile;

   209

		case VEH_Road:

   210

			if (v->cargo_type == CT_PASSENGERS) {

   211

				if (st->bus_stops != NULL)

   212

					return st->bus_stops->xy;

   213

				else

   214

					return 0;

   215

			} else {

   216

				if (st->truck_stops != NULL)

   217

					return st->truck_stops->xy;

   218

				else

   219

					return 0;

   220

			}

   221

		default:

   222

			assert(false);

   223

			return 0;

   224

	}

   225

}

   226

   227

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

   228

{

   229

	uint16 station_index = st->index;

   230

	uint i;

   231

	uint x1 = TileX(tile);

   232

	uint y1 = TileY(tile);

   233

	uint x2 = x1 + w - 1;

   234

	uint y2 = y1 + h - 1;

   235

	uint t;

   236

   237

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

   238

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

   239

			t = TileX(i);

   240

			if (t < x1) x1 = t;

   241

			if (t > x2) x2 = t;

   242

   243

			t = TileY(i);

   244

			if (t < y1) y1 = t;

   245

			if (t > y2) y2 = t;

   246

		}

   247

	}

   248

   249

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

   250

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   251

		return false;

   252

	}

   253

   254

	return true;

   255

}

   256

   257

static Station *AllocateStation(void)

   258

{

   259

	Station *st = NULL;

   260

   261

	FOR_ALL_STATIONS(st) {

   262

		if (st->xy == 0) {

   263

			uint index = st->index;

   264

   265

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

   266

			st->index = index;

   267

   268

			return st;

   269

		}

   270

	}

   271

   272

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

   273

	if (AddBlockToPool(&_station_pool))

   274

		return AllocateStation();

   275

   276

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   277

	return NULL;

   278

}

   279

   280

   281

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

   282

	static const TileIndexDiffC _count_square_table[] = {

   283

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

   284

		{-6,  1}, {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

	};

   291

	const TileIndexDiffC *p;

   292

	int num = 0;

   293

   294

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

   295

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

   296

   297

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

   298

			num++;

   299

	}

   300

   301

	return num;

   302

}

   303

   304

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

   305

   306

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

   307

{

   308

	static const uint32 _gen_station_name_bits[] = {

   309

		0,																/* 0 */

   310

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

   311

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

   312

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

   313

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

   314

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

   315

	};

   316

   317

	Town *t = st->town;

   318

	uint32 free_names = (uint32)-1;

   319

	int found;

   320

	uint z,z2;

   321

	unsigned long tmp;

   322

   323

	{

   324

		Station *s;

   325

   326

		FOR_ALL_STATIONS(s) {

   327

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

   328

				uint str = M(s->string_id);

   329

				if (str <= 0x20) {

   330

					if (str == M(STR_SV_STNAME_FOREST))

   331

						str = M(STR_SV_STNAME_WOODS);

   332

					CLRBIT(free_names, str);

   333

				}

   334

			}

   335

		}

   336

	}

   337

   338

	/* check default names */

   339

	tmp = free_names & _gen_station_name_bits[flag];

   340

	if (tmp != 0) {

   341

		found = FindFirstBit(tmp);

   342

		goto done;

   343

	}

   344

   345

	/* check mine? */

   346

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

   347

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

   348

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

   349

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

   350

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

   351

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

   352

					found = M(STR_SV_STNAME_MINES);

   353

					goto done;

   354

				}

   355

	}

   356

   357

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

   358

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

   359

		found = M(STR_SV_STNAME);

   360

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

   361

   362

		found = M(STR_SV_STNAME_CENTRAL);

   363

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

   364

	}

   365

   366

	/* Check lakeside */

   367

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

   368

			DistanceFromEdge(tile) < 20 &&

   369

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

   370

				found = M(STR_SV_STNAME_LAKESIDE);

   371

				goto done;

   372

			}

   373

   374

	/* Check woods */

   375

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

   376

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

   377

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

   378

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

   379

				goto done;

   380

	}

   381

   382

	/* check elevation compared to town */

   383

	z = GetTileZ(tile);

   384

	z2 = GetTileZ(t->xy);

   385

	if (z < z2) {

   386

		found = M(STR_SV_STNAME_VALLEY);

   387

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

   388

	} else if (z > z2) {

   389

		found = M(STR_SV_STNAME_HEIGHTS);

   390

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

   391

	}

   392

   393

	/* check direction compared to town */

   394

	{

   395

		static const int8 _direction_and_table[] = {

   396

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

   397

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

   398

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

   399

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

   400

		};

   401

   402

		free_names &= _direction_and_table[

   403

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

   404

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

   405

	}

   406

   407

	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));

   408

	if (tmp == 0) {

   409

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   410

		return false;

   411

	}

   412

	found = FindFirstBit(tmp);

   413

   414

done:

   415

	st->string_id = found + STR_SV_STNAME;

   416

	return true;

   417

}

   418

#undef M

   419

   420

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

   421

{

   422

	Station *st, *best_station = NULL;

   423

	uint cur_dist;

   424

   425

	FOR_ALL_STATIONS(st) {

   426

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

   427

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

   428

			threshold = cur_dist;

   429

			best_station = st;

   430

		}

   431

	}

   432

   433

	return best_station;

   434

}

   435

   436

static void StationInitialize(Station *st, TileIndex tile)

   437

{

   438

	int i;

   439

	GoodsEntry *ge;

   440

   441

	st->xy = tile;

   442

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

   443

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

   444

	st->had_vehicle_of_type = 0;

   445

	st->time_since_load = 255;

   446

	st->time_since_unload = 255;

   447

	st->delete_ctr = 0;

   448

	st->facilities = 0;

   449

   450

	st->last_vehicle = INVALID_VEHICLE;

   451

   452

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

   453

		ge->waiting_acceptance = 0;

   454

		ge->days_since_pickup = 0;

   455

		ge->enroute_from = INVALID_STATION;

   456

		ge->rating = 175;

   457

		ge->last_speed = 0;

   458

		ge->last_age = 0xFF;

   459

	}

   460

   461

	_global_station_sort_dirty = true; // build a new station

   462

}

   463

   464

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

   465

// st = Station to update for.

   466

static void UpdateStationVirtCoord(Station *st)

   467

{

   468

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

   469

   470

	pt.y -= 32;

   471

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

   472

   473

	SetDParam(0, st->index);

   474

	SetDParam(1, st->facilities);

   475

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

   476

}

   477

   478

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

   479

void UpdateAllStationVirtCoord(void)

   480

{

   481

	Station *st;

   482

	FOR_ALL_STATIONS(st) {

   483

		if (st->xy != 0)

   484

			UpdateStationVirtCoord(st);

   485

	}

   486

}

   487

   488

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

   489

static void UpdateStationVirtCoordDirty(Station *st)

   490

{

   491

	MarkStationDirty(st);

   492

	UpdateStationVirtCoord(st);

   493

	MarkStationDirty(st);

   494

}

   495

   496

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

   497

static uint GetAcceptanceMask(Station *st)

   498

{

   499

	uint mask = 0;

   500

	uint cur_mask = 1;

   501

	int i;

   502

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

   503

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

   504

			mask |= cur_mask;

   505

	}

   506

	return mask;

   507

}

   508