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

    35

enum {

    36

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

    37

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

    38

	STATION_POOL_MAX_BLOCKS      = 1000,

    39

    40

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

    41

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

    42

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    43

};

    44

    45

/**

    46

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

    47

 */

    48

static void StationPoolNewBlock(uint start_item)

    49

{

    50

	Station *st;

    51

    52

	FOR_ALL_STATIONS_FROM(st, start_item) st->index = start_item++;

    53

}

    54

    55

static void StationPoolCleanBlock(uint start_item, uint end_item)

    56

{

    57

	uint i;

    58

    59

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

    60

		Station *st = GetStation(i);

    61

		free(st->speclist);

    62

		st->speclist = NULL;

    63

	}

    64

}

    65

    66

/**

    67

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

    68

 */

    69

static void RoadStopPoolNewBlock(uint start_item)

    70

{

    71

	RoadStop *rs;

    72

    73

	FOR_ALL_ROADSTOPS_FROM(rs, start_item) rs->index = start_item++;

    74

}

    75

    76

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

    77

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

    78

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

    79

    80

    81

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

    82

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

    83

const byte _airport_size_x[] = {4, 6, 1, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};

    84

const byte _airport_size_y[] = {3, 6, 1, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};

    85

    86

void ShowAircraftDepotWindow(TileIndex tile);

    87

extern void UpdateAirplanesOnNewStation(Station *st);

    88

    89

static void MarkStationDirty(const Station* st)

    90

{

    91

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

    92

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

    93

    94

		MarkAllViewportsDirty(

    95

			st->sign.left - 6,

    96

			st->sign.top,

    97

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

    98

			st->sign.top + 48);

    99

	}

   100

}

   101

   102

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

   103

{

   104

	road_stop->xy = tile;

   105

	road_stop->used = true;

   106

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

   107

	road_stop->next = NULL;

   108

	road_stop->prev = previous;

   109

	road_stop->station = index;

   110

	road_stop->num_vehicles = 0;

   111

}

   112

   113

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

   114

{

   115

	switch (type) {

   116

		case RS_BUS:   return st->bus_stops;

   117

		case RS_TRUCK: return st->truck_stops;

   118

		default: NOT_REACHED();

   119

	}

   120

   121

	return NULL;

   122

}

   123

   124

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   125

{

   126

	const Station* st = GetStationByTile(tile);

   127

	RoadStop* rs;

   128

   129

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

   130

		assert(rs->next != NULL);

   131

	}

   132

   133

	return rs;

   134

}

   135

   136

uint GetNumRoadStops(const Station* st, RoadStopType type)

   137

{

   138

	uint num = 0;

   139

	const RoadStop *rs;

   140

   141

	assert(st != NULL);

   142

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

   143

   144

	return num;

   145

}

   146

   147

RoadStop *AllocateRoadStop(void)

   148

{

   149

	RoadStop *rs;

   150

   151

	FOR_ALL_ROADSTOPS(rs) {

   152

		if (!rs->used) {

   153

			uint index = rs->index;

   154

   155

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

   156

			rs->index = index;

   157

   158

			return rs;

   159

		}

   160

	}

   161

   162

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

   163

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

   164

   165

	return NULL;

   166

}

   167

   168

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

   169

    radius that is available within the station */

   170

static uint FindCatchmentRadius(const Station* st)

   171

{

   172

	uint ret = 0;

   173

   174

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

   175

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

   176

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

   177

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

   178

   179

	if (st->airport_tile) {

   180

		switch (st->airport_type) {

   181

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

   182

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

   183

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

   184

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

   185

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

   186

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

   187

		}

   188

	}

   189

   190

	return ret;

   191

}

   192

   193

#define CHECK_STATIONS_ERR ((Station*)-1)

   194

   195

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

   196

{

   197

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

   198

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

   199

		if (IsTileType(tile_cur, MP_STATION)) {

   200

			StationID t = GetStationIndex(tile_cur);

   201

			{

   202

				Station *st = GetStation(t);

   203

				// you cannot take control of an oilrig!!

   204

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

   205

					continue;

   206

			}

   207

   208

			if (closest_station == INVALID_STATION) {

   209

				closest_station = t;

   210

			} else if (closest_station != t) {

   211

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   212

				return CHECK_STATIONS_ERR;

   213

			}

   214

		}

   215

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

   216

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

   217

}

   218

   219

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

   220

{

   221

	switch (v->type) {

   222

		case VEH_Train: 		return st->train_tile;

   223

		case VEH_Aircraft:	return st->airport_tile;

   224

		case VEH_Ship:			return st->dock_tile;

   225

		case VEH_Road:

   226

			if (v->cargo_type == CT_PASSENGERS) {

   227

				return (st->bus_stops != NULL) ? st->bus_stops->xy : 0;

   228

			} else {

   229

				return (st->truck_stops != NULL) ? st->truck_stops->xy : 0;

   230

			}

   231

		default:

   232

			assert(false);

   233

			return 0;

   234

	}

   235

}

   236

   237

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

   238

{

   239

	StationID station_index = st->index;

   240

	uint i;

   241

	uint x1 = TileX(tile);

   242

	uint y1 = TileY(tile);

   243

	uint x2 = x1 + w - 1;

   244

	uint y2 = y1 + h - 1;

   245

	uint t;

   246

   247

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

   248

		if (IsTileType(i, MP_STATION) && GetStationIndex(i) == station_index) {

   249

			t = TileX(i);

   250

			if (t < x1) x1 = t;

   251

			if (t > x2) x2 = t;

   252

   253

			t = TileY(i);

   254

			if (t < y1) y1 = t;

   255

			if (t > y2) y2 = t;

   256

		}

   257

	}

   258

   259

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

   260

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   261

		return false;

   262

	}

   263

   264

	return true;

   265

}

   266

   267

static Station *AllocateStation(void)

   268

{

   269

	Station *st = NULL;

   270

   271

	FOR_ALL_STATIONS(st) {

   272

		if (st->xy == 0) {

   273

			StationID index = st->index;

   274

   275

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

   276

			st->index = index;

   277

   278

			return st;

   279

		}

   280

	}

   281

   282

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

   283

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

   284

   285

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   286

	return NULL;

   287

}

   288

   289

   290

/**

   291

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

   292

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

   293

 * @param type the type of tile searched for

   294

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

   295

 *                 in all other cases this parameter is ignored

   296

 * @result the noumber of matching tiles around

   297

 */

   298

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

   299

{

   300

	TileIndex cur_tile;

   301

	int dx, dy;

   302

	int num = 0;

   303

   304

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

   305

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

   306

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

   307

   308

			if (IsTileType(cur_tile, type)) {

   309

				switch (type) {

   310

					case MP_INDUSTRY:

   311

						if (GetIndustryType(cur_tile) == industry)

   312

							num++;

   313

						break;

   314

   315

					case MP_WATER:

   316

						if (!IsWater(cur_tile))

   317

							break;

   318

						/* FALL THROUGH WHEN WATER TILE */

   319

					case MP_TREES:

   320

						num++;

   321

						break;

   322

   323

					default:

   324

						break;

   325

				}

   326

			}

   327

		}

   328

	}

   329

   330

	return num;

   331

}

   332

   333

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

   334

   335

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

   336

{

   337

	static const uint32 _gen_station_name_bits[] = {

   338

		0,                                      /* 0 */

   339

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

   340

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

   341

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

   342

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

   343

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

   344

	};

   345

   346

	Town *t = st->town;

   347

	uint32 free_names = (uint32)-1;

   348

	int found;

   349

	uint z,z2;

   350

	unsigned long tmp;

   351

   352

	{

   353

		Station *s;

   354

   355

		FOR_ALL_STATIONS(s) {

   356

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

   357

				uint str = M(s->string_id);

   358

				if (str <= 0x20) {

   359

					if (str == M(STR_SV_STNAME_FOREST))

   360

						str = M(STR_SV_STNAME_WOODS);

   361

					CLRBIT(free_names, str);

   362

				}

   363

			}

   364

		}

   365

	}

   366

   367

	/* check default names */

   368

	tmp = free_names & _gen_station_name_bits[flag];

   369

	if (tmp != 0) {

   370

		found = FindFirstBit(tmp);

   371

		goto done;

   372

	}

   373

   374

	/* check mine? */

   375

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

   376

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

   377

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

   378

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

   379

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

   380

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

   381

			found = M(STR_SV_STNAME_MINES);

   382

			goto done;

   383

		}

   384

	}

   385

   386

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

   387

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

   388

		found = M(STR_SV_STNAME);

   389

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

   390

   391

		found = M(STR_SV_STNAME_CENTRAL);

   392

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

   393

	}

   394

   395

	/* Check lakeside */

   396

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

   397

			DistanceFromEdge(tile) < 20 &&

   398

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

   399

		found = M(STR_SV_STNAME_LAKESIDE);

   400

		goto done;

   401

	}

   402

   403

	/* Check woods */

   404

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

   405

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

   406

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

   407

			) {

   408

		found = _opt.landscape == LT_DESERT ?

   409

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   410

		goto done;

   411

	}

   412

   413

	/* check elevation compared to town */

   414

	z = GetTileZ(tile);

   415

	z2 = GetTileZ(t->xy);

   416

	if (z < z2) {

   417

		found = M(STR_SV_STNAME_VALLEY);

   418

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

   419

	} else if (z > z2) {

   420

		found = M(STR_SV_STNAME_HEIGHTS);

   421

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

   422

	}

   423

   424

	/* check direction compared to town */

   425

	{

   426

		static const int8 _direction_and_table[] = {

   427

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

   428

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

   429

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

   430

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

   431

		};

   432

   433

		free_names &= _direction_and_table[

   434

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

   435

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

   436

	}

   437

   438

	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));

   439

	if (tmp == 0) {

   440

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   441

		return false;

   442

	}

   443

	found = FindFirstBit(tmp);

   444

   445

done:

   446

	st->string_id = found + STR_SV_STNAME;

   447

	return true;

   448

}

   449

#undef M

   450

   451

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

   452

{

   453

	Station* best_station = NULL;

   454

	Station* st;

   455

   456

	FOR_ALL_STATIONS(st) {

   457

		if (st->xy != 0 && (owner == OWNER_SPECTATOR || st->owner == owner)) {

   458

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

   459

   460

			if (cur_dist < threshold) {

   461

				threshold = cur_dist;

   462

				best_station = st;

   463

			}

   464

		}

   465

	}

   466

   467

	return best_station;

   468

}

   469

   470

static void StationInitialize(Station *st, TileIndex tile)

   471

{

   472

	GoodsEntry *ge;

   473

   474

	st->xy = tile;

   475

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

   476

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

   477

	st->had_vehicle_of_type = 0;

   478

	st->time_since_load = 255;

   479

	st->time_since_unload = 255;

   480

	st->delete_ctr = 0;

   481

	st->facilities = 0;

   482

   483

	st->last_vehicle_type = VEH_Invalid;

   484

   485

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

   486

		ge->waiting_acceptance = 0;

   487

		ge->days_since_pickup = 0;

   488

		ge->enroute_from = INVALID_STATION;

   489

		ge->rating = 175;

   490

		ge->last_speed = 0;

   491

		ge->last_age = 0xFF;

   492

		ge->feeder_profit = 0;

   493

	}

   494

   495

	st->random_bits = Random();

   496

	st->waiting_triggers = 0;

   497