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 "bridge_map.h"

    30

#include "date.h"

    31

#include "table/town_land.h"

    32

#include "genworld.h"

    33

    34

/**

    35

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

    36

 */

    37

static void TownPoolNewBlock(uint start_item)

    38

{

    39

	Town *t;

    40

    41

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

    42

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

    43

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

    44

}

    45

    46

/* Initialize the town-pool */

    47

DEFINE_OLD_POOL(Town, Town, TownPoolNewBlock, NULL)

    48

    49

void DestroyTown(Town *t)

    50

{

    51

	Industry *i;

    52

	TileIndex tile;

    53

    54

	/* Delete town authority window

    55

	 * and remove from list of sorted towns */

    56

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    57

	_town_sort_dirty = true;

    58

	_total_towns--;

    59

    60

	/* Delete all industries belonging to the town */

    61

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

    62

    63

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

    64

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

    65

		switch (GetTileType(tile)) {

    66

			case MP_HOUSE:

    67

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

    68

				break;

    69

    70

			case MP_STREET:

    71

			case MP_TUNNELBRIDGE:

    72

				if (IsTileOwner(tile, OWNER_TOWN) &&

    73

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

    74

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

    75

				break;

    76

    77

			default:

    78

				break;

    79

		}

    80

	}

    81

    82

	DeleteName(t->townnametype);

    83

	DeleteSubsidyWithTown(t->index);

    84

    85

	MarkWholeScreenDirty();

    86

}

    87

    88

// Local

    89

static int _grow_town_result;

    90

    91

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

    92

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

    93

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

    94

    95

static void TownDrawHouseLift(const TileInfo *ti)

    96

{

    97

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

    98

}

    99

   100

typedef void TownDrawTileProc(const TileInfo *ti);

   101

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   102

	TownDrawHouseLift

   103

};

   104

   105

   106

static void DrawTile_Town(TileInfo *ti)

   107

{

   108

	const DrawBuildingsTileStruct *dcts;

   109

	SpriteID image;

   110

	SpriteID pal;

   111

   112

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

   113

	{

   114

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

   115

		uint variant;

   116

		variant  = ti->x >> 4;

   117

		variant ^= ti->x >> 6;

   118

		variant ^= ti->y >> 4;

   119

		variant -= ti->y >> 6;

   120

		variant &= 3;

   121

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

   122

	}

   123

   124

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

   125

   126

	image = dcts->ground.sprite;

   127

	pal   = dcts->ground.pal;

   128

	DrawGroundSprite(image, pal);

   129

   130

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

   131

	image = dcts->building.sprite;

   132

	if (image != 0) {

   133

		if (_display_opt & DO_TRANS_BUILDINGS) {

   134

			SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);

   135

			pal = PALETTE_TO_TRANSPARENT;

   136

		} else {

   137

			pal = dcts->building.pal;

   138

		}

   139

   140

		AddSortableSpriteToDraw(image, pal,

   141

			ti->x + dcts->subtile_x,

   142

			ti->y + dcts->subtile_y,

   143

			dcts->width + 1,

   144

			dcts->height + 1,

   145

			dcts->dz,

   146

			ti->z

   147

		);

   148

   149

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   150

	}

   151

   152

	{

   153

		int proc = dcts->draw_proc - 1;

   154

   155

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

   156

	}

   157

}

   158

   159

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

   160

{

   161

	return GetTileMaxZ(tile);

   162

}

   163

   164

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   165

{

   166

	return SLOPE_FLAT;

   167

}

   168

   169

static void AnimateTile_Town(TileIndex tile)

   170

{

   171

	int pos, dest;

   172

   173

	if (_tick_counter & 3) return;

   174

   175

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

   176

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

   177

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

   178

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

   179

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

   180

		DeleteAnimatedTile(tile);

   181

		return;

   182

	}

   183

   184

	if (!IsLiftMoving(tile)) {

   185

		int i;

   186

   187

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

   188

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

   189

		 *  the height of 2 'normal' floors.

   190

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

   191

		do {

   192

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

   193

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

   194

   195

		SetLiftDestination(tile, i);

   196

	}

   197

   198

	pos = GetLiftPosition(tile);

   199

	dest = GetLiftDestination(tile) * 6;

   200

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

   201

	SetLiftPosition(tile, pos);

   202

   203

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

   204

   205

	MarkTileDirtyByTile(tile);

   206

}

   207

   208

static void UpdateTownRadius(Town *t);

   209

   210

static bool IsCloseToTown(TileIndex tile, uint dist)

   211

{

   212

	const Town* t;

   213

   214

	FOR_ALL_TOWNS(t) {

   215

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

   216

	}

   217

	return false;

   218

}

   219

   220

static void MarkTownSignDirty(Town *t)

   221

{

   222

	MarkAllViewportsDirty(

   223

		t->sign.left-6,

   224

		t->sign.top-3,

   225

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

   226

		t->sign.top + 45

   227

	);

   228

}

   229

   230

void UpdateTownVirtCoord(Town *t)

   231

{

   232

	Point pt;

   233

   234

	MarkTownSignDirty(t);

   235

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

   236

	SetDParam(0, t->index);

   237

	SetDParam(1, t->population);

   238

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

   239

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   240

	MarkTownSignDirty(t);

   241

}

   242

   243

static void ChangePopulation(Town *t, int mod)

   244

{

   245

	t->population += mod;

   246

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   247

	UpdateTownVirtCoord(t);

   248

   249

	if (_town_sort_order & 2) _town_sort_dirty = true;

   250

}

   251

   252

uint32 GetWorldPopulation(void)

   253

{

   254

	uint32 pop;

   255

	const Town* t;

   256

   257

	pop = 0;

   258

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

   259

	return pop;

   260

}

   261

   262

static void MakeSingleHouseBigger(TileIndex tile)

   263

{

   264

	assert(IsTileType(tile, MP_HOUSE));

   265

   266

	if (LiftHasDestination(tile)) return;

   267

   268

	IncHouseConstructionTick(tile);

   269

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

   270

   271

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

   272

   273

	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED){

   274

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

   275

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

   276

	}

   277

	MarkTileDirtyByTile(tile);

   278

}

   279

   280

static void MakeTownHouseBigger(TileIndex tile)

   281

{

   282

	uint flags = _house_more_flags[GetHouseType(tile)];

   283

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

   284

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

   285

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

   286

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

   287

}

   288

   289

static void TileLoop_Town(TileIndex tile)

   290

{

   291

	int house;

   292

	Town *t;

   293

	uint32 r;

   294

   295

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   296

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

   297

		MakeTownHouseBigger(tile);

   298

		return;

   299

	}

   300

   301

	house = GetHouseType(tile);

   302

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

   303

   304

	t = GetTownByTile(tile);

   305

   306

	r = Random();

   307

   308

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

   309

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

   310

		uint moved;

   311

   312

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

   313

		t->new_max_pass += amt;

   314

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

   315

		t->new_act_pass += moved;

   316

	}

   317

   318

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

   319

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

   320

		uint moved;

   321

   322

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

   323

		t->new_max_mail += amt;

   324

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

   325

		t->new_act_mail += moved;

   326

	}

   327

   328

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

   329

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

   330

   331

		_current_player = OWNER_TOWN;

   332

   333

		ClearTownHouse(t, tile);

   334

   335

		// rebuild with another house?

   336

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

   337

   338

		_current_player = OWNER_NONE;

   339

	}

   340

}

   341

   342

static void ClickTile_Town(TileIndex tile)

   343

{

   344

	/* not used */

   345

}

   346

   347

static int32 ClearTile_Town(TileIndex tile, byte flags)

   348

{

   349

	int house, rating;

   350

	int32 cost;

   351

	Town *t;

   352

   353

	// safety checks

   354

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   355

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

   356

   357

	house = GetHouseType(tile);

   358

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

   359

   360

	rating = _housetype_remove_ratingmod[house];

   361

	_cleared_town_rating += rating;

   362

	_cleared_town = t = GetTownByTile(tile);

   363

   364

	if (IsValidPlayer(_current_player)) {

   365

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

   366

			SetDParam(0, t->index);

   367

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   368

		}

   369

	}

   370

   371

	if (flags & DC_EXEC) {

   372

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   373

		ClearTownHouse(t, tile);

   374

	}

   375

   376

	return cost;

   377

}

   378

   379

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   380

{

   381

	byte type = GetHouseType(tile);

   382

   383

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   384

	ac[CT_MAIL]       = _housetype_cargo_mail[type];

   385

	ac[CT_GOODS]      = _housetype_cargo_goods[type];

   386

	ac[CT_FOOD]       = _housetype_cargo_food[type];

   387

}

   388

   389

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   390

{

   391

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

   392

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   393

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

   394

		td->str = STR_2058_UNDER_CONSTRUCTION;

   395

	}

   396

   397

	td->owner = OWNER_TOWN;

   398

}

   399

   400

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   401

{

   402

	/* not used */

   403

	return 0;

   404

}

   405

   406

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

   407

{

   408

	/* not used */

   409

}

   410

   411

   412

static const TileIndexDiffC _roadblock_tileadd[] = {

   413

	{ 0, -1},

   414

	{ 1,  0},

   415

	{ 0,  1},

   416

	{-1,  0},

   417

   418

	// Store the first 3 elements again.

   419

	// Lets us rotate without using &3.

   420

	{ 0, -1},

   421

	{ 1,  0},

   422

	{ 0,  1}

   423

};

   424

   425

   426

static bool GrowTown(Town *t);

   427

   428

static void TownTickHandler(Town *t)

   429

{

   430

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

   431

		int i = t->grow_counter - 1;

   432

		if (i < 0) {

   433

			if (GrowTown(t)) {

   434

				i = t->growth_rate;

   435

			} else {

   436

				i = 0;

   437

			}

   438

		}

   439

		t->grow_counter = i;

   440

	}

   441

   442

	UpdateTownRadius(t);

   443

}

   444

   445

void OnTick_Town(void)

   446

{

   447

	if (_game_mode == GM_EDITOR) return;

   448

   449

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

   450

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

   451

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   452

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   453

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   454

		uint32 i = _cur_town_ctr;

   455

   456

		if (++_cur_town_ctr > GetMaxTownIndex())

   457

			_cur_town_ctr = 0;

   458

   459

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

   460

	}

   461

}

   462

   463

static RoadBits GetTownRoadMask(TileIndex tile)

   464

{

   465

	TrackBits b = GetAnyRoadTrackBits(tile);

   466

	RoadBits r = ROAD_NONE;

   467

   468

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   469

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   470

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

   471

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

   472

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

   473

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

   474

	return r;

   475

}

   476

   477

static bool IsRoadAllowedHere(TileIndex tile, int dir)

   478

{

   479

	Slope k;

   480

	Slope slope;

   481

   482

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

   483

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

   484

	TILE_ASSERT(tile);

   485

   486

	for (;;) {

   487

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

   488

		if (GetAnyRoadTrackBits(tile) == 0) {

   489

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

   490

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

   491

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

   492

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

   493

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

   494

				return false;

   495

		}