1

/* $Id$ */

     2

     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "functions.h"

     6

#include "strings.h"

     7

#include "road_map.h"

     8

#include "table/strings.h"

     9

#include "table/sprites.h"

    10

#include "map.h"

    11

#include "tile.h"

    12

#include "town_map.h"

    13

#include "tunnel_map.h"

    14

#include "viewport.h"

    15

#include "town.h"

    16

#include "command.h"

    17

#include "gfx.h"

    18

#include "industry.h"

    19

#include "station.h"

    20

#include "player.h"

    21

#include "news.h"

    22

#include "saveload.h"

    23

#include "economy.h"

    24

#include "gui.h"

    25

#include "unmovable_map.h"

    26

#include "water_map.h"

    27

#include "variables.h"

    28

#include "bridge.h"

    29

#include "date.h"

    30

#include "table/town_land.h"

    31

#include "genworld.h"

    32

    33

enum {

    34

	/* Max towns: 64000 (8 * 8000) */

    35

	TOWN_POOL_BLOCK_SIZE_BITS = 3,       /* In bits, so (1 << 3) == 8 */

    36

	TOWN_POOL_MAX_BLOCKS      = 8000,

    37

};

    38

    39

/**

    40

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

    41

 */

    42

static void TownPoolNewBlock(uint start_item)

    43

{

    44

	Town *t;

    45

    46

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

    47

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

    48

	for (t = GetTown(start_item); t != NULL; t = (t->index + 1 < GetTownPoolSize()) ? GetTown(t->index + 1) : NULL) t->index = start_item++;

    49

}

    50

    51

/* Initialize the town-pool */

    52

MemoryPool _town_pool = { "Towns", TOWN_POOL_MAX_BLOCKS, TOWN_POOL_BLOCK_SIZE_BITS, sizeof(Town), &TownPoolNewBlock, NULL, 0, 0, NULL };

    53

    54

void DestroyTown(Town *t)

    55

{

    56

	Industry *i;

    57

	TileIndex tile;

    58

    59

	/* Delete town authority window

    60

	 * and remove from list of sorted towns */

    61

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    62

	_town_sort_dirty = true;

    63

    64

	/* Delete all industries belonging to the town */

    65

	FOR_ALL_INDUSTRIES(i) if (i->town == t) DeleteIndustry(i);

    66

    67

	/* Go through all tiles and delete those belonging to the town */

    68

	for (tile = 0; tile < MapSize(); ++tile) {

    69

		switch (GetTileType(tile)) {

    70

			case MP_HOUSE:

    71

				if (GetTownByTile(tile) == t) DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);

    72

				break;

    73

    74

			case MP_STREET:

    75

			case MP_TUNNELBRIDGE:

    76

				if (IsTileOwner(tile, OWNER_TOWN) &&

    77

						ClosestTownFromTile(tile, (uint)-1) == t)

    78

					DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);

    79

				break;

    80

    81

			default:

    82

				break;

    83

		}

    84

	}

    85

    86

	DeleteName(t->townnametype);

    87

    88

	MarkWholeScreenDirty();

    89

}

    90

    91

// Local

    92

static int _grow_town_result;

    93

    94

static bool BuildTownHouse(Town *t, TileIndex tile);

    95

static void ClearTownHouse(Town *t, TileIndex tile);

    96

static void DoBuildTownHouse(Town *t, TileIndex tile);

    97

    98

static void TownDrawHouseLift(const TileInfo *ti)

    99

{

   100

	AddChildSpriteScreen(SPR_LIFT, 14, 60 - GetLiftPosition(ti->tile));

   101

}

   102

   103

typedef void TownDrawTileProc(const TileInfo *ti);

   104

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   105

	TownDrawHouseLift

   106

};

   107

   108

   109

static void DrawTile_Town(TileInfo *ti)

   110

{

   111

	const DrawBuildingsTileStruct *dcts;

   112

	uint32 image;

   113

   114

	/* Retrieve pointer to the draw town tile struct */

   115

	{

   116

		/* this "randomizes" on the (up to) 4 variants of a building */

   117

		uint variant;

   118

		variant  = ti->x >> 4;

   119

		variant ^= ti->x >> 6;

   120

		variant ^= ti->y >> 4;

   121

		variant -= ti->y >> 6;

   122

		variant &= 3;

   123

		dcts = &_town_draw_tile_data[GetHouseType(ti->tile) << 4 | variant << 2 | GetHouseBuildingStage(ti->tile)];

   124

	}

   125

   126

	if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh);

   127

	DrawGroundSprite(dcts->ground);

   128

   129

	/* Add a house on top of the ground? */

   130

	image = dcts->building;

   131

	if (image != 0) {

   132

		if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);

   133

   134

		AddSortableSpriteToDraw(image,

   135

			ti->x + dcts->subtile_x,

   136

			ti->y + dcts->subtile_y,

   137

			dcts->width + 1,

   138

			dcts->height + 1,

   139

			dcts->dz,

   140

			ti->z

   141

		);

   142

   143

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   144

	}

   145

   146

	{

   147

		int proc = dcts->draw_proc - 1;

   148

   149

		if (proc >= 0) _town_draw_tile_procs[proc](ti);

   150

	}

   151

}

   152

   153

static uint GetSlopeZ_Town(TileIndex tile, uint x, uint y)

   154

{

   155

	return GetTileMaxZ(tile);

   156

}

   157

   158

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   159

{

   160

	return SLOPE_FLAT;

   161

}

   162

   163

static void AnimateTile_Town(TileIndex tile)

   164

{

   165

	int pos, dest;

   166

   167

	if (_tick_counter & 3) return;

   168

   169

	// If the house is not one with a lift anymore, then stop this animating.

   170

	// Not exactly sure when this happens, but probably when a house changes.

   171

	// Before this was just a return...so it'd leak animated tiles..

   172

	// That bug seems to have been here since day 1??

   173

	if (!(_housetype_extra_flags[GetHouseType(tile)] & 0x20)) {

   174

		DeleteAnimatedTile(tile);

   175

		return;

   176

	}

   177

   178

	if (!IsLiftMoving(tile)) {

   179

		int i;

   180

   181

		/** Building has 6 floors, number 0 .. 6, where 1 is illegal.

   182

		 *  This is due to the fact that the first floor is, in the graphics,

   183

		 *  the height of 2 'normal' floors.

   184

		 *  Furthermore, there are 6 lift positions from floor N (incl) to floor N + 1 (excl) */

   185

		do {

   186

			i = (Random() & 7) - 1;

   187

		} while (i < 0 || i == 1 || i * 6 == GetLiftPosition(tile));

   188

   189

		SetLiftDestination(tile, i);

   190

	}

   191

   192

	pos = GetLiftPosition(tile);

   193

	dest = GetLiftDestination(tile) * 6;

   194

	pos += (pos < dest) ? 1 : -1;

   195

	SetLiftPosition(tile, pos);

   196

   197

	if (pos == dest) HaltLift(tile);

   198

   199

	MarkTileDirtyByTile(tile);

   200

}

   201

   202

static void UpdateTownRadius(Town *t);

   203

   204

static bool IsCloseToTown(TileIndex tile, uint dist)

   205

{

   206

	const Town* t;

   207

   208

	FOR_ALL_TOWNS(t) {

   209

		if (DistanceManhattan(tile, t->xy) < dist) return true;

   210

	}

   211

	return false;

   212

}

   213

   214

static void MarkTownSignDirty(Town *t)

   215

{

   216

	MarkAllViewportsDirty(

   217

		t->sign.left-6,

   218

		t->sign.top-3,

   219

		t->sign.left+t->sign.width_1*4+12,

   220

		t->sign.top + 45

   221

	);

   222

}

   223

   224

void UpdateTownVirtCoord(Town *t)

   225

{

   226

	Point pt;

   227

   228

	MarkTownSignDirty(t);

   229

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

   230

	SetDParam(0, t->index);

   231

	SetDParam(1, t->population);

   232

	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24,

   233

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   234

	MarkTownSignDirty(t);

   235

}

   236

   237

static void ChangePopulation(Town *t, int mod)

   238

{

   239

	t->population += mod;

   240

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   241

	UpdateTownVirtCoord(t);

   242

   243

	if (_town_sort_order & 2) _town_sort_dirty = true;

   244

}

   245

   246

uint32 GetWorldPopulation(void)

   247

{

   248

	uint32 pop;

   249

	const Town* t;

   250

   251

	pop = 0;

   252

	FOR_ALL_TOWNS(t) pop += t->population;

   253

	return pop;

   254

}

   255

   256

static void MakeSingleHouseBigger(TileIndex tile)

   257

{

   258

	assert(IsTileType(tile, MP_HOUSE));

   259

   260

	if (LiftHasDestination(tile)) return;

   261

   262

	IncHouseConstructionTick(tile);

   263

	if (GetHouseConstructionTick(tile) != 0) return;

   264

   265

	IncHouseBuildingStage(tile);  /*increase construction stage of one more step*/

   266

   267

	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED){

   268

		/*Now, construction is completed.  Can add population of building to the town*/

   269

		ChangePopulation(GetTownByTile(tile), _housetype_population[GetHouseType(tile)]);

   270

	}

   271

	MarkTileDirtyByTile(tile);

   272

}

   273

   274

static void MakeTownHouseBigger(TileIndex tile)

   275

{

   276

	uint flags = _house_more_flags[GetHouseType(tile)];

   277

	if (flags & 8) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));

   278

	if (flags & 4) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));

   279

	if (flags & 2) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));

   280

	if (flags & 1) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));

   281

}

   282

   283

static void TileLoop_Town(TileIndex tile)

   284

{

   285

	int house;

   286

	Town *t;

   287

	uint32 r;

   288

   289

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   290

		/*Construction is not completed. See if we can go further in construction*/

   291

		MakeTownHouseBigger(tile);

   292

		return;

   293

	}

   294

   295

	house = GetHouseType(tile);

   296

	if ((_housetype_extra_flags[house] & 0x20) && !LiftHasDestination(tile) && CHANCE16(1, 2) && AddAnimatedTile(tile)) BeginLiftMovement(tile);

   297

   298

	t = GetTownByTile(tile);

   299

   300

	r = Random();

   301

   302

	if (GB(r, 0, 8) < _housetype_population[house]) {

   303

		uint amt = GB(r, 0, 8) / 8 + 1;

   304

		uint moved;

   305

   306

		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;

   307

		t->new_max_pass += amt;

   308

		moved = MoveGoodsToStation(tile, 1, 1, CT_PASSENGERS, amt);

   309

		t->new_act_pass += moved;

   310

	}

   311

   312

	if (GB(r, 8, 8) < _housetype_mailamount[house] ) {

   313

		uint amt = GB(r, 8, 8) / 8 + 1;

   314

		uint moved;

   315

   316

		if (_economy.fluct <= 0) amt = (amt + 1) >> 1;

   317

		t->new_max_mail += amt;

   318

		moved = MoveGoodsToStation(tile, 1, 1, CT_MAIL, amt);

   319

		t->new_act_mail += moved;

   320

	}

   321

   322

	if (_house_more_flags[house] & 8 && HASBIT(t->flags12, TOWN_IS_FUNDED) && --t->time_until_rebuild == 0) {

   323

		t->time_until_rebuild = GB(r, 16, 6) + 130;

   324

   325

		_current_player = OWNER_TOWN;

   326

   327

		ClearTownHouse(t, tile);

   328

   329

		// rebuild with another house?

   330

		if (GB(r, 24, 8) >= 12) DoBuildTownHouse(t, tile);

   331

   332

		_current_player = OWNER_NONE;

   333

	}

   334

}

   335

   336

static void ClickTile_Town(TileIndex tile)

   337

{

   338

	/* not used */

   339

}

   340

   341

static int32 ClearTile_Town(TileIndex tile, byte flags)

   342

{

   343

	int house, rating;

   344

	int32 cost;

   345

	Town *t;

   346

   347

	// safety checks

   348

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   349

	if (flags&DC_AUTO && !(flags&DC_AI_BUILDING)) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);

   350

   351

	house = GetHouseType(tile);

   352

	cost = _price.remove_house * _housetype_remove_cost[house] >> 8;

   353

   354

	rating = _housetype_remove_ratingmod[house];

   355

	_cleared_town_rating += rating;

   356

	_cleared_town = t = GetTownByTile(tile);

   357

   358

	if (_current_player < MAX_PLAYERS) {

   359

		if (rating > t->ratings[_current_player] && !(flags & DC_NO_TOWN_RATING) && !_cheats.magic_bulldozer.value) {

   360

			SetDParam(0, t->index);

   361

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   362

		}

   363

	}

   364

   365

	if (flags & DC_EXEC) {

   366

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   367

		ClearTownHouse(t, tile);

   368

	}

   369

   370

	return cost;

   371

}

   372

   373

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   374

{

   375

	byte type = GetHouseType(tile);

   376

   377

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   378

	ac[CT_MAIL]       = _housetype_cargo_mail[type];

   379

	ac[CT_GOODS]      = _housetype_cargo_goods[type];

   380

	ac[CT_FOOD]       = _housetype_cargo_food[type];

   381

}

   382

   383

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   384

{

   385

	td->str = _town_tile_names[GetHouseType(tile)];

   386

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   387

		SetDParamX(td->dparam, 0, td->str);

   388

		td->str = STR_2058_UNDER_CONSTRUCTION;

   389

	}

   390

   391

	td->owner = OWNER_TOWN;

   392

}

   393

   394

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   395

{

   396

	/* not used */

   397

	return 0;

   398

}

   399

   400

static void ChangeTileOwner_Town(TileIndex tile, PlayerID old_player, PlayerID new_player)

   401

{

   402

	/* not used */

   403

}

   404

   405

   406

static const TileIndexDiffC _roadblock_tileadd[] = {

   407

	{ 0, -1},

   408

	{ 1,  0},

   409

	{ 0,  1},

   410

	{-1,  0},

   411

   412

	// Store the first 3 elements again.

   413

	// Lets us rotate without using &3.

   414

	{ 0, -1},

   415

	{ 1,  0},

   416

	{ 0,  1}

   417

};

   418

   419

   420

static bool GrowTown(Town *t);

   421

   422

static void TownTickHandler(Town *t)

   423

{

   424

	if (HASBIT(t->flags12, TOWN_IS_FUNDED)) {

   425

		int i = t->grow_counter - 1;

   426

		if (i < 0) {

   427

			if (GrowTown(t)) {

   428

				i = t->growth_rate;

   429

			} else {

   430

				i = 0;

   431

			}

   432

		}

   433

		t->grow_counter = i;

   434

	}

   435

   436

	UpdateTownRadius(t);

   437

}

   438

   439

void OnTick_Town(void)

   440

{

   441

	if (_game_mode == GM_EDITOR) return;

   442

   443

	/* Make sure each town's tickhandler invocation frequency is about the

   444

	 * same - TOWN_GROWTH_FREQUENCY - independent on the number of towns. */

   445

	for (_cur_town_iter += GetTownArraySize();

   446

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   447

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   448

		uint32 i = _cur_town_ctr;

   449

   450

		if (++_cur_town_ctr >= GetTownArraySize())

   451

			_cur_town_ctr = 0;

   452

   453

		if (IsValidTownID(i)) TownTickHandler(GetTown(i));

   454

	}

   455

}

   456

   457

static RoadBits GetTownRoadMask(TileIndex tile)

   458

{

   459

	TrackBits b = GetAnyRoadTrackBits(tile);

   460

	RoadBits r = 0;

   461

   462

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   463

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   464

	if (b & TRACK_BIT_UPPER) r |= ROAD_NE | ROAD_NW;

   465

	if (b & TRACK_BIT_LOWER) r |= ROAD_SE | ROAD_SW;

   466

	if (b & TRACK_BIT_LEFT)  r |= ROAD_NW | ROAD_SW;

   467

	if (b & TRACK_BIT_RIGHT) r |= ROAD_NE | ROAD_SE;

   468

	return r;

   469

}

   470

   471

static bool IsRoadAllowedHere(TileIndex tile, int dir)

   472

{

   473

	Slope k;

   474

	Slope slope;

   475

   476

	// If this assertion fails, it might be because the world contains

   477

	//  land at the edges. This is not ok.

   478

	TILE_ASSERT(tile);

   479

   480

	for (;;) {

   481

		// Check if there already is a road at this point?

   482

		if (GetAnyRoadTrackBits(tile) == 0) {

   483

			// No, try to build one in the direction.

   484

			// if that fails clear the land, and if that fails exit.

   485

			// This is to make sure that we can build a road here later.

   486

			if (CmdFailed(DoCommand(tile, (dir & 1 ? ROAD_X : ROAD_Y), 0, DC_AUTO, CMD_BUILD_ROAD)) &&

   487

					CmdFailed(DoCommand(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR)))

   488

				return false;

   489

		}

   490

   491

		slope = GetTileSlope(tile, NULL);

   492

		if (slope == SLOPE_FLAT) {

   493

no_slope:

   494

			// Tile has no slope

   495

			// Disallow the road if any neighboring tile has a road.

   496