1

/* $Id$ */

     2

     3

/** @file station_cmd.c

     4

  */

     5

     6

#include "stdafx.h"

     7

#include "openttd.h"

     8

#include "debug.h"

     9

#include "functions.h"

    10

#include "station_map.h"

    11

#include "table/sprites.h"

    12

#include "table/strings.h"

    13

#include "map.h"

    14

#include "tile.h"

    15

#include "station.h"

    16

#include "gfx.h"

    17

#include "window.h"

    18

#include "viewport.h"

    19

#include "command.h"

    20

#include "town.h"

    21

#include "vehicle.h"

    22

#include "news.h"

    23

#include "saveload.h"

    24

#include "economy.h"

    25

#include "player.h"

    26

#include "airport.h"

    27

#include "sprite.h"

    28

#include "depot.h"

    29

#include "train.h"

    30

#include "water_map.h"

    31

#include "industry_map.h"

    32

#include "newgrf_callbacks.h"

    33

#include "newgrf_station.h"

    34

#include "yapf/yapf.h"

    35

#include "date.h"

    36

    37

enum {

    38

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

    39

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

    40

	STATION_POOL_MAX_BLOCKS      = 1000,

    41

    42

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

    43

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

    44

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    45

};

    46

    47

/**

    48

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

    49

 */

    50

static void StationPoolNewBlock(uint start_item)

    51

{

    52

	Station *st;

    53

    54

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

    55

	 *  TODO - This is just a temporary stage, this will be removed. */

    56

	for (st = GetStation(start_item); st != NULL; st = (st->index + 1 < GetStationPoolSize()) ? GetStation(st->index + 1) : NULL) st->index = start_item++;

    57

}

    58

    59

static void StationPoolCleanBlock(uint start_item, uint end_item)

    60

{

    61

	uint i;

    62

    63

	for (i = start_item; i <= end_item; i++) {

    64

		Station *st = GetStation(i);

    65

		free(st->speclist);

    66

		st->speclist = NULL;

    67

	}

    68

}

    69

    70

/**

    71

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

    72

 */

    73

static void RoadStopPoolNewBlock(uint start_item)

    74

{

    75

	RoadStop *rs;

    76

    77

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

    78

	 * TODO - This is just a temporary stage, this will be removed. */

    79

	for (rs = GetRoadStop(start_item); rs != NULL; rs = (rs->index + 1 < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1) : NULL) rs->index = start_item++;

    80

}

    81

    82

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

    83

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

    84

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

    85

    86

    87

void ShowAircraftDepotWindow(TileIndex tile);

    88

extern void UpdateAirplanesOnNewStation(Station *st);

    89

    90

static void MarkStationDirty(const Station* st)

    91

{

    92

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

    93

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

    94

    95

		MarkAllViewportsDirty(

    96

			st->sign.left - 6,

    97

			st->sign.top,

    98

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

    99

			st->sign.top + 48);

   100

	}

   101

}

   102

   103

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

   104

{

   105

	road_stop->xy = tile;

   106

	road_stop->used = true;

   107

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

   108

	road_stop->next = NULL;

   109

	road_stop->prev = previous;

   110

	road_stop->station = index;

   111

	road_stop->num_vehicles = 0;

   112

}

   113

   114

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

   115

{

   116

	switch (type) {

   117

		case RS_BUS:   return st->bus_stops;

   118

		case RS_TRUCK: return st->truck_stops;

   119

		default: NOT_REACHED();

   120

	}

   121

   122

	return NULL;

   123

}

   124

   125

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   126

{

   127

	const Station* st = GetStationByTile(tile);

   128

	RoadStop* rs;

   129

   130

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

   131

		assert(rs->next != NULL);

   132

	}

   133

   134

	return rs;

   135

}

   136

   137

uint GetNumRoadStopsInStation(const Station* st, RoadStopType type)

   138

{

   139

	uint num = 0;

   140

	const RoadStop *rs;

   141

   142

	assert(st != NULL);

   143

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

   144

   145

	return num;

   146

}

   147

   148

RoadStop *AllocateRoadStop(void)

   149

{

   150

	RoadStop *rs;

   151

   152

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

   153

	 * TODO - This is just a temporary stage, this will be removed. */

   154

	for (rs = GetRoadStop(0); rs != NULL; rs = (rs->index + 1 < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1) : NULL) {

   155

		if (!IsValidRoadStop(rs)) {

   156

			RoadStopID index = rs->index;

   157

   158

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

   159

			rs->index = index;

   160

   161

			return rs;

   162

		}

   163

	}

   164

   165

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

   166

	if (AddBlockToPool(&_roadstop_pool)) return AllocateRoadStop();

   167

   168

	return NULL;

   169

}

   170

   171

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

   172

    radius that is available within the station */

   173

static uint FindCatchmentRadius(const Station* st)

   174

{

   175

	uint ret = 0;

   176

   177

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

   178

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

   179

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

   180

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

   181

   182

	if (st->airport_tile) {

   183

		switch (st->airport_type) {

   184

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

   185

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

   186

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

   187

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

   188

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

   189

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

   190

			case AT_COMMUTER:      ret = max(ret, CA_AIR_COMMUTER); break;

   191

			case AT_HELIDEPOT:     ret = max(ret, CA_AIR_HELIDEPOT); break;

   192

			case AT_INTERCON:      ret = max(ret, CA_AIR_INTERCON); break;

   193

			case AT_HELISTATION:   ret = max(ret, CA_AIR_HELISTATION); break;

   194

		}

   195

	}

   196

   197

	return ret;

   198

}

   199

   200

#define CHECK_STATIONS_ERR ((Station*)-1)

   201

   202

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

   203

{

   204

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

   205

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

   206

		if (IsTileType(tile_cur, MP_STATION)) {

   207

			StationID t = GetStationIndex(tile_cur);

   208

			{

   209

				Station *st = GetStation(t);

   210

				// you cannot take control of an oilrig!!

   211

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

   212

					continue;

   213

			}

   214

   215

			if (closest_station == INVALID_STATION) {

   216

				closest_station = t;

   217

			} else if (closest_station != t) {

   218

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   219

				return CHECK_STATIONS_ERR;

   220

			}

   221

		}

   222

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

   223

	return (closest_station == INVALID_STATION) ? NULL : GetStation(closest_station);

   224

}

   225

   226

   227

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

   228

{

   229

	StationID 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) && GetStationIndex(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

	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.

   262

	 * TODO - This is just a temporary stage, this will be removed. */

   263

	for (st = GetStation(0); st != NULL; st = (st->index + 1 < GetStationPoolSize()) ? GetStation(st->index + 1) : NULL) {

   264

		if (!IsValidStation(st)) {

   265

			StationID index = st->index;

   266

   267

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

   268

			st->index = index;

   269

   270

			return st;

   271

		}

   272

	}

   273

   274

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

   275

	if (AddBlockToPool(&_station_pool)) return AllocateStation();

   276

   277

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   278

	return NULL;

   279

}

   280

   281

   282

/**

   283

 * Counts the numbers of tiles matching a specific type in the area around

   284

 * @param tile the center tile of the 'count area'

   285

 * @param type the type of tile searched for

   286

 * @param industry when type == MP_INDUSTRY, the type of the industry,

   287

 *                 in all other cases this parameter is ignored

   288

 * @result the noumber of matching tiles around

   289

 */

   290

static int CountMapSquareAround(TileIndex tile, TileType type, IndustryType industry)

   291

{

   292

	TileIndex cur_tile;

   293

	int dx, dy;

   294

	int num = 0;

   295

   296

	for (dx = -3; dx <= 3; dx++) {

   297

		for (dy = -3; dy <= 3; dy++) {

   298

			cur_tile = TILE_MASK(tile + TileDiffXY(dx, dy));

   299

   300

			if (IsTileType(cur_tile, type)) {

   301

				switch (type) {

   302

					case MP_INDUSTRY:

   303

						if (GetIndustryType(cur_tile) == industry)

   304

							num++;

   305

						break;

   306

   307

					case MP_WATER:

   308

						if (!IsWater(cur_tile))

   309

							break;

   310

						/* FALL THROUGH WHEN WATER TILE */

   311

					case MP_TREES:

   312

						num++;

   313

						break;

   314

   315

					default:

   316

						break;

   317

				}

   318

			}

   319

		}

   320

	}

   321

   322

	return num;

   323

}

   324

   325

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

   326

   327

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

   328

{

   329

	static const uint32 _gen_station_name_bits[] = {

   330

		0,                                      /* 0 */

   331

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

   332

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

   333

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

   334

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

   335

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

   336

	};

   337

   338

	Town *t = st->town;

   339

	uint32 free_names = (uint32)-1;

   340

	int found;

   341

	uint z,z2;

   342

	unsigned long tmp;

   343

   344

	{

   345

		Station *s;

   346

   347

		FOR_ALL_STATIONS(s) {

   348

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

   349

				uint str = M(s->string_id);

   350

				if (str <= 0x20) {

   351

					if (str == M(STR_SV_STNAME_FOREST))

   352

						str = M(STR_SV_STNAME_WOODS);

   353

					CLRBIT(free_names, str);

   354

				}

   355

			}

   356

		}

   357

	}

   358

   359

	/* check default names */

   360

	tmp = free_names & _gen_station_name_bits[flag];

   361

	if (tmp != 0) {

   362

		found = FindFirstBit(tmp);

   363

		goto done;

   364

	}

   365

   366

	/* check mine? */

   367

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

   368

		if (CountMapSquareAround(tile, MP_INDUSTRY, IT_COAL_MINE) >= 2 ||

   369

				CountMapSquareAround(tile, MP_INDUSTRY, IT_IRON_MINE) >= 2 ||

   370

				CountMapSquareAround(tile, MP_INDUSTRY, IT_COPPER_MINE) >= 2 ||

   371

				CountMapSquareAround(tile, MP_INDUSTRY, IT_GOLD_MINE) >= 2 ||

   372

				CountMapSquareAround(tile, MP_INDUSTRY, IT_DIAMOND_MINE) >= 2) {

   373

			found = M(STR_SV_STNAME_MINES);

   374

			goto done;

   375

		}

   376

	}

   377

   378

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

   379

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

   380

		found = M(STR_SV_STNAME);

   381

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

   382

   383

		found = M(STR_SV_STNAME_CENTRAL);

   384

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

   385

	}

   386

   387

	/* Check lakeside */

   388

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

   389

			DistanceFromEdge(tile) < 20 &&

   390

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

   391

		found = M(STR_SV_STNAME_LAKESIDE);

   392

		goto done;

   393

	}

   394

   395

	/* Check woods */

   396

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

   397

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

   398

				CountMapSquareAround(tile, MP_INDUSTRY, IT_FOREST) >= 2)

   399

			) {

   400

		found = _opt.landscape == LT_DESERT ?

   401

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   402

		goto done;

   403

	}

   404

   405

	/* check elevation compared to town */

   406

	z = GetTileZ(tile);

   407

	z2 = GetTileZ(t->xy);

   408

	if (z < z2) {

   409

		found = M(STR_SV_STNAME_VALLEY);

   410

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

   411

	} else if (z > z2) {

   412

		found = M(STR_SV_STNAME_HEIGHTS);

   413

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

   414

	}

   415

   416

	/* check direction compared to town */

   417

	{

   418

		static const int8 _direction_and_table[] = {

   419

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

   420

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

   421

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

   422

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

   423

		};

   424

   425

		free_names &= _direction_and_table[

   426

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

   427

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

   428

	}

   429

   430

	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));

   431

	if (tmp == 0) {

   432

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   433

		return false;

   434

	}

   435

	found = FindFirstBit(tmp);

   436

   437

done:

   438

	st->string_id = found + STR_SV_STNAME;

   439

	return true;

   440

}

   441

#undef M

   442

   443

static Station* GetClosestStationFromTile(TileIndex tile, uint threshold, PlayerID owner)

   444

{

   445

	Station* best_station = NULL;

   446

	Station* st;

   447

   448

	FOR_ALL_STATIONS(st) {

   449

		if ((owner == OWNER_SPECTATOR || st->owner == owner)) {

   450

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

   451

   452

			if (cur_dist < threshold) {

   453

				threshold = cur_dist;

   454

				best_station = st;

   455

			}

   456

		}

   457

	}

   458

   459

	return best_station;

   460

}

   461

   462

static void StationInitialize(Station *st, TileIndex tile)

   463

{

   464

	GoodsEntry *ge;

   465

   466

	st->xy = tile;

   467

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

   468

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

   469

	st->had_vehicle_of_type = 0;

   470

	st->time_since_load = 255;

   471

	st->time_since_unload = 255;

   472

	st->delete_ctr = 0;

   473

	st->facilities = 0;

   474

   475

	st->last_vehicle_type = VEH_Invalid;

   476

   477

	for (ge = st->goods; ge != endof(st->goods); ge++) {

   478

		ge->waiting_acceptance = 0;

   479

		ge->days_since_pickup = 0;

   480

		ge->enroute_from = INVALID_STATION;

   481

		ge->rating = 175;

   482

		ge->last_speed = 0;

   483

		ge->last_age = 0xFF;

   484

		ge->feeder_profit = 0;

   485

	}

   486

   487

	st->random_bits = Random();

   488

	st->waiting_triggers = 0;

   489

   490

}

   491

   492

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

   493

// st = Station to update for.

   494

static void UpdateStationVirtCoord(Station *st)

   495

{

   496

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

   497