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

    33

enum {

    34

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

    35

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

    36

	STATION_POOL_MAX_BLOCKS      = 1000,

    37

    38

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

    39

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

    40

	ROADSTOP_POOL_MAX_BLOCKS      = 2000,

    41

};

    42

    43

/**

    44

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

    45

 */

    46

static void StationPoolNewBlock(uint start_item)

    47

{

    48

	Station *st;

    49

    50

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

    51

}

    52

    53

static void StationPoolCleanBlock(uint start_item, uint end_item)

    54

{

    55

	uint i;

    56

    57

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

    58

		Station *st = GetStation(i);

    59

		free(st->speclist);

    60

		st->speclist = NULL;

    61

	}

    62

}

    63

    64

/**

    65

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

    66

 */

    67

static void RoadStopPoolNewBlock(uint start_item)

    68

{

    69

	RoadStop *rs;

    70

    71

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

    72

}

    73

    74

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

    75

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

    76

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

    77

    78

    79

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

    80

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

    81

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

    82

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

    83

    84

void ShowAircraftDepotWindow(TileIndex tile);

    85

extern void UpdateAirplanesOnNewStation(Station *st);

    86

    87

static void MarkStationDirty(const Station* st)

    88

{

    89

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

    90

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

    91

    92

		MarkAllViewportsDirty(

    93

			st->sign.left - 6,

    94

			st->sign.top,

    95

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

    96

			st->sign.top + 48);

    97

	}

    98

}

    99

   100

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

   101

{

   102

	road_stop->xy = tile;

   103

	road_stop->used = true;

   104

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

   105

	road_stop->next = NULL;

   106

	road_stop->prev = previous;

   107

	road_stop->station = index;

   108

	road_stop->num_vehicles = 0;

   109

}

   110

   111

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

   112

{

   113

	switch (type) {

   114

		case RS_BUS:   return st->bus_stops;

   115

		case RS_TRUCK: return st->truck_stops;

   116

		default: NOT_REACHED();

   117

	}

   118

   119

	return NULL;

   120

}

   121

   122

RoadStop* GetRoadStopByTile(TileIndex tile, RoadStopType type)

   123

{

   124

	const Station* st = GetStationByTile(tile);

   125

	RoadStop* rs;

   126

   127

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

   128

		assert(rs->next != NULL);

   129

	}

   130

   131

	return rs;

   132

}

   133

   134

uint GetNumRoadStops(const Station* st, RoadStopType type)

   135

{

   136

	uint num = 0;

   137

	const RoadStop *rs;

   138

   139

	assert(st != NULL);

   140

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

   141

   142

	return num;

   143

}

   144

   145

RoadStop *AllocateRoadStop(void)

   146

{

   147

	RoadStop *rs;

   148

   149

	FOR_ALL_ROADSTOPS(rs) {

   150

		if (!rs->used) {

   151

			uint index = rs->index;

   152

   153

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

   154

			rs->index = index;

   155

   156

			return rs;

   157

		}

   158

	}

   159

   160

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

   161

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

   162

   163

	return NULL;

   164

}

   165

   166

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

   167

    radius that is available within the station */

   168

static uint FindCatchmentRadius(const Station* st)

   169

{

   170

	uint ret = 0;

   171

   172

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

   173

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

   174

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

   175

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

   176

   177

	if (st->airport_tile) {

   178

		switch (st->airport_type) {

   179

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

   180

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

   181

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

   182

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

   183

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

   184

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

   185

		}

   186

	}

   187

   188

	return ret;

   189

}

   190

   191

#define CHECK_STATIONS_ERR ((Station*)-1)

   192

   193

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

   194

{

   195

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

   196

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

   197

		if (IsTileType(tile_cur, MP_STATION)) {

   198

			StationID t = GetStationIndex(tile_cur);

   199

			{

   200

				Station *st = GetStation(t);

   201

				// you cannot take control of an oilrig!!

   202

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

   203

					continue;

   204

			}

   205

   206

			if (closest_station == INVALID_STATION) {

   207

				closest_station = t;

   208

			} else if (closest_station != t) {

   209

				_error_message = STR_3006_ADJOINS_MORE_THAN_ONE_EXISTING;

   210

				return CHECK_STATIONS_ERR;

   211

			}

   212

		}

   213

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

   214

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

   215

}

   216

   217

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

   218

{

   219

	switch (v->type) {

   220

		case VEH_Train: 		return st->train_tile;

   221

		case VEH_Aircraft:	return st->airport_tile;

   222

		case VEH_Ship:			return st->dock_tile;

   223

		case VEH_Road:

   224

			if (v->cargo_type == CT_PASSENGERS) {

   225

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

   226

			} else {

   227

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

   228

			}

   229

		default:

   230

			assert(false);

   231

			return 0;

   232

	}

   233

}

   234

   235

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

   236

{

   237

	StationID station_index = st->index;

   238

	uint i;

   239

	uint x1 = TileX(tile);

   240

	uint y1 = TileY(tile);

   241

	uint x2 = x1 + w - 1;

   242

	uint y2 = y1 + h - 1;

   243

	uint t;

   244

   245

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

   246

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

   247

			t = TileX(i);

   248

			if (t < x1) x1 = t;

   249

			if (t > x2) x2 = t;

   250

   251

			t = TileY(i);

   252

			if (t < y1) y1 = t;

   253

			if (t > y2) y2 = t;

   254

		}

   255

	}

   256

   257

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

   258

		_error_message = STR_306C_STATION_TOO_SPREAD_OUT;

   259

		return false;

   260

	}

   261

   262

	return true;

   263

}

   264

   265

static Station *AllocateStation(void)

   266

{

   267

	Station *st = NULL;

   268

   269

	FOR_ALL_STATIONS(st) {

   270

		if (st->xy == 0) {

   271

			StationID index = st->index;

   272

   273

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

   274

			st->index = index;

   275

   276

			return st;

   277

		}

   278

	}

   279

   280

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

   281

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

   282

   283

	_error_message = STR_3008_TOO_MANY_STATIONS_LOADING;

   284

	return NULL;

   285

}

   286

   287

   288

/**

   289

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

   290

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

   291

 * @param type the type of tile searched for

   292

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

   293

 *                 in all other cases this parameter is ignored

   294

 * @result the noumber of matching tiles around

   295

 */

   296

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

   297

{

   298

	TileIndex cur_tile;

   299

	int dx, dy;

   300

	int num = 0;

   301

   302

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

   303

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

   304

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

   305

   306

			if (IsTileType(cur_tile, type)) {

   307

				switch (type) {

   308

					case MP_INDUSTRY:

   309

						if (GetIndustryType(cur_tile) == industry)

   310

							num++;

   311

						break;

   312

   313

					case MP_WATER:

   314

						if (!IsWater(cur_tile))

   315

							break;

   316

						/* FALL THROUGH WHEN WATER TILE */

   317

					case MP_TREES:

   318

						num++;

   319

						break;

   320

   321

					default:

   322

						break;

   323

				}

   324

			}

   325

		}

   326

	}

   327

   328

	return num;

   329

}

   330

   331

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

   332

   333

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

   334

{

   335

	static const uint32 _gen_station_name_bits[] = {

   336

		0,                                      /* 0 */

   337

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

   338

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

   339

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

   340

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

   341

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

   342

	};

   343

   344

	Town *t = st->town;

   345

	uint32 free_names = (uint32)-1;

   346

	int found;

   347

	uint z,z2;

   348

	unsigned long tmp;

   349

   350

	{

   351

		Station *s;

   352

   353

		FOR_ALL_STATIONS(s) {

   354

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

   355

				uint str = M(s->string_id);

   356

				if (str <= 0x20) {

   357

					if (str == M(STR_SV_STNAME_FOREST))

   358

						str = M(STR_SV_STNAME_WOODS);

   359

					CLRBIT(free_names, str);

   360

				}

   361

			}

   362

		}

   363

	}

   364

   365

	/* check default names */

   366

	tmp = free_names & _gen_station_name_bits[flag];

   367

	if (tmp != 0) {

   368

		found = FindFirstBit(tmp);

   369

		goto done;

   370

	}

   371

   372

	/* check mine? */

   373

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

   374

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

   375

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

   376

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

   377

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

   378

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

   379

			found = M(STR_SV_STNAME_MINES);

   380

			goto done;

   381

		}

   382

	}

   383

   384

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

   385

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

   386

		found = M(STR_SV_STNAME);

   387

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

   388

   389

		found = M(STR_SV_STNAME_CENTRAL);

   390

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

   391

	}

   392

   393

	/* Check lakeside */

   394

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

   395

			DistanceFromEdge(tile) < 20 &&

   396

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

   397

		found = M(STR_SV_STNAME_LAKESIDE);

   398

		goto done;

   399

	}

   400

   401

	/* Check woods */

   402

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

   403

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

   404

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

   405

			) {

   406

		found = _opt.landscape == LT_DESERT ?

   407

			M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);

   408

		goto done;

   409

	}

   410

   411

	/* check elevation compared to town */

   412

	z = GetTileZ(tile);

   413

	z2 = GetTileZ(t->xy);

   414

	if (z < z2) {

   415

		found = M(STR_SV_STNAME_VALLEY);

   416

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

   417

	} else if (z > z2) {

   418

		found = M(STR_SV_STNAME_HEIGHTS);

   419

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

   420

	}

   421

   422

	/* check direction compared to town */

   423

	{

   424

		static const int8 _direction_and_table[] = {

   425

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

   426

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

   427

			~( (1<<M(STR_SV_STNAME_SOUTH)) | (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_EAST)) ),

   429

		};

   430

   431

		free_names &= _direction_and_table[

   432

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

   433

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

   434

	}

   435

   436

	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));

   437

	if (tmp == 0) {

   438

		_error_message = STR_3007_TOO_MANY_STATIONS_LOADING;

   439

		return false;

   440

	}

   441

	found = FindFirstBit(tmp);

   442

   443

done:

   444

	st->string_id = found + STR_SV_STNAME;

   445

	return true;

   446

}

   447

#undef M

   448

   449

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

   450

{

   451

	Station* best_station = NULL;

   452

	Station* st;

   453

   454

	FOR_ALL_STATIONS(st) {

   455

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

   456

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

   457

   458

			if (cur_dist < threshold) {

   459

				threshold = cur_dist;

   460

				best_station = st;

   461

			}

   462

		}

   463

	}

   464

   465

	return best_station;

   466

}

   467

   468

static void StationInitialize(Station *st, TileIndex tile)

   469

{

   470

	GoodsEntry *ge;

   471

   472

	st->xy = tile;

   473

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

   474

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

   475

	st->had_vehicle_of_type = 0;

   476

	st->time_since_load = 255;

   477

	st->time_since_unload = 255;

   478

	st->delete_ctr = 0;

   479

	st->facilities = 0;

   480

   481

	st->last_vehicle_type = VEH_Invalid;

   482

   483

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

   484

		ge->waiting_acceptance = 0;

   485

		ge->days_since_pickup = 0;

   486

		ge->enroute_from = INVALID_STATION;

   487

		ge->rating = 175;

   488

		ge->last_speed = 0;

   489

		ge->last_age = 0xFF;

   490

		ge->feeder_profit = 0;

   491

	}

   492

   493

	st->random_bits = Random();

   494

	st->waiting_triggers = 0;

   495

   496

	_global_station_sort_dirty = true; // build a new station

   497

}