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

/**

    34

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

    35

 */

    36

static void TownPoolNewBlock(uint start_item)

    37

{

    38

	Town *t;

    39

    40

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

    41

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

    42

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

    43

}

    44

    45

/* Initialize the town-pool */

    46

DEFINE_POOL(Town, Town, TownPoolNewBlock, NULL)

    47

    48

void DestroyTown(Town *t)

    49

{

    50

	Industry *i;

    51

	TileIndex tile;

    52

    53

	/* Delete town authority window

    54

	 * and remove from list of sorted towns */

    55

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    56

	_town_sort_dirty = true;

    57

    58

	/* Delete all industries belonging to the town */

    59

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

    60

    61

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

    62

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

    63

		switch (GetTileType(tile)) {

    64

			case MP_HOUSE:

    65

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

    66

				break;

    67

    68

			case MP_STREET:

    69

			case MP_TUNNELBRIDGE:

    70

				if (IsTileOwner(tile, OWNER_TOWN) &&

    71

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

    72

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

    73

				break;

    74

    75

			default:

    76

				break;

    77

		}

    78

	}

    79

    80

	DeleteName(t->townnametype);

    81

    82

	MarkWholeScreenDirty();

    83

}

    84

    85

// Local

    86

static int _grow_town_result;

    87

    88

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

    89

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

    90

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

    91

    92

static void TownDrawHouseLift(const TileInfo *ti)

    93

{

    94

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

    95

}

    96

    97

typedef void TownDrawTileProc(const TileInfo *ti);

    98

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

    99

	TownDrawHouseLift

   100

};

   101

   102

   103

static void DrawTile_Town(TileInfo *ti)

   104

{

   105

	const DrawBuildingsTileStruct *dcts;

   106

	uint32 image;

   107

   108

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

   109

	{

   110

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

   111

		uint variant;

   112

		variant  = ti->x >> 4;

   113

		variant ^= ti->x >> 6;

   114

		variant ^= ti->y >> 4;

   115

		variant -= ti->y >> 6;

   116

		variant &= 3;

   117

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

   118

	}

   119

   120

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

   121

	DrawGroundSprite(dcts->ground);

   122

   123

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

   124

	image = dcts->building;

   125

	if (image != 0) {

   126

		if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);

   127

   128

		AddSortableSpriteToDraw(image,

   129

			ti->x + dcts->subtile_x,

   130

			ti->y + dcts->subtile_y,

   131

			dcts->width + 1,

   132

			dcts->height + 1,

   133

			dcts->dz,

   134

			ti->z

   135

		);

   136

   137

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   138

	}

   139

   140

	{

   141

		int proc = dcts->draw_proc - 1;

   142

   143

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

   144

	}

   145

}

   146

   147

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

   148

{

   149

	return GetTileMaxZ(tile);

   150

}

   151

   152

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   153

{

   154

	return SLOPE_FLAT;

   155

}

   156

   157

static void AnimateTile_Town(TileIndex tile)

   158

{

   159

	int pos, dest;

   160

   161

	if (_tick_counter & 3) return;

   162

   163

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

   164

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

   165

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

   166

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

   167

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

   168

		DeleteAnimatedTile(tile);

   169

		return;

   170

	}

   171

   172

	if (!IsLiftMoving(tile)) {

   173

		int i;

   174

   175

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

   176

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

   177

		 *  the height of 2 'normal' floors.

   178

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

   179

		do {

   180

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

   181

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

   182

   183

		SetLiftDestination(tile, i);

   184

	}

   185

   186

	pos = GetLiftPosition(tile);

   187

	dest = GetLiftDestination(tile) * 6;

   188

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

   189

	SetLiftPosition(tile, pos);

   190

   191

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

   192

   193

	MarkTileDirtyByTile(tile);

   194

}

   195

   196

static void UpdateTownRadius(Town *t);

   197

   198

static bool IsCloseToTown(TileIndex tile, uint dist)

   199

{

   200

	const Town* t;

   201

   202

	FOR_ALL_TOWNS(t) {

   203

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

   204

	}

   205

	return false;

   206

}

   207

   208

static void MarkTownSignDirty(Town *t)

   209

{

   210

	MarkAllViewportsDirty(

   211

		t->sign.left-6,

   212

		t->sign.top-3,

   213

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

   214

		t->sign.top + 45

   215

	);

   216

}

   217

   218

void UpdateTownVirtCoord(Town *t)

   219

{

   220

	Point pt;

   221

   222

	MarkTownSignDirty(t);

   223

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

   224

	SetDParam(0, t->index);

   225

	SetDParam(1, t->population);

   226

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

   227

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   228

	MarkTownSignDirty(t);

   229

}

   230

   231

static void ChangePopulation(Town *t, int mod)

   232

{

   233

	t->population += mod;

   234

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   235

	UpdateTownVirtCoord(t);

   236

   237

	if (_town_sort_order & 2) _town_sort_dirty = true;

   238

}

   239

   240

uint32 GetWorldPopulation(void)

   241

{

   242

	uint32 pop;

   243

	const Town* t;

   244

   245

	pop = 0;

   246

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

   247

	return pop;

   248

}

   249

   250

static void MakeSingleHouseBigger(TileIndex tile)

   251

{

   252

	assert(IsTileType(tile, MP_HOUSE));

   253

   254

	if (LiftHasDestination(tile)) return;

   255

   256

	IncHouseConstructionTick(tile);

   257

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

   258

   259

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

   260

   261

	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED){

   262

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

   263

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

   264

	}

   265

	MarkTileDirtyByTile(tile);

   266

}

   267

   268

static void MakeTownHouseBigger(TileIndex tile)

   269

{

   270

	uint flags = _house_more_flags[GetHouseType(tile)];

   271

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

   272

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

   273

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

   274

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

   275

}

   276

   277

static void TileLoop_Town(TileIndex tile)

   278

{

   279

	int house;

   280

	Town *t;

   281

	uint32 r;

   282

   283

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   284

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

   285

		MakeTownHouseBigger(tile);

   286

		return;

   287

	}

   288

   289

	house = GetHouseType(tile);

   290

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

   291

   292

	t = GetTownByTile(tile);

   293

   294

	r = Random();

   295

   296

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

   297

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

   298

		uint moved;

   299

   300

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

   301

		t->new_max_pass += amt;

   302

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

   303

		t->new_act_pass += moved;

   304

	}

   305

   306

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

   307

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

   308

		uint moved;

   309

   310

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

   311

		t->new_max_mail += amt;

   312

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

   313

		t->new_act_mail += moved;

   314

	}

   315

   316

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

   317

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

   318

   319

		_current_player = OWNER_TOWN;

   320

   321

		ClearTownHouse(t, tile);

   322

   323

		// rebuild with another house?

   324

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

   325

   326

		_current_player = OWNER_NONE;

   327

	}

   328

}

   329

   330

static void ClickTile_Town(TileIndex tile)

   331

{

   332

	/* not used */

   333

}

   334

   335

static int32 ClearTile_Town(TileIndex tile, byte flags)

   336

{

   337

	int house, rating;

   338

	int32 cost;

   339

	Town *t;

   340

   341

	// safety checks

   342

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   343

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

   344

   345

	house = GetHouseType(tile);

   346

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

   347

   348

	rating = _housetype_remove_ratingmod[house];

   349

	_cleared_town_rating += rating;

   350

	_cleared_town = t = GetTownByTile(tile);

   351

   352

	if (IsValidPlayer(_current_player)) {

   353

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

   354

			SetDParam(0, t->index);

   355

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   356

		}

   357

	}

   358

   359

	if (flags & DC_EXEC) {

   360

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   361

		ClearTownHouse(t, tile);

   362

	}

   363

   364

	return cost;

   365

}

   366

   367

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   368

{

   369

	byte type = GetHouseType(tile);

   370

   371

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   372

	ac[CT_MAIL]       = _housetype_cargo_mail[type];

   373

	ac[CT_GOODS]      = _housetype_cargo_goods[type];

   374

	ac[CT_FOOD]       = _housetype_cargo_food[type];

   375

}

   376

   377

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   378

{

   379

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

   380

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   381

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

   382

		td->str = STR_2058_UNDER_CONSTRUCTION;

   383

	}

   384

   385

	td->owner = OWNER_TOWN;

   386

}

   387

   388

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   389

{

   390

	/* not used */

   391

	return 0;

   392

}

   393

   394

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

   395

{

   396

	/* not used */

   397

}

   398

   399

   400

static const TileIndexDiffC _roadblock_tileadd[] = {

   401

	{ 0, -1},

   402

	{ 1,  0},

   403

	{ 0,  1},

   404

	{-1,  0},

   405

   406

	// Store the first 3 elements again.

   407

	// Lets us rotate without using &3.

   408

	{ 0, -1},

   409

	{ 1,  0},

   410

	{ 0,  1}

   411

};

   412

   413

   414

static bool GrowTown(Town *t);

   415

   416

static void TownTickHandler(Town *t)

   417

{

   418

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

   419

		int i = t->grow_counter - 1;

   420

		if (i < 0) {

   421

			if (GrowTown(t)) {

   422

				i = t->growth_rate;

   423

			} else {

   424

				i = 0;

   425

			}

   426

		}

   427

		t->grow_counter = i;

   428

	}

   429

   430

	UpdateTownRadius(t);

   431

}

   432

   433

void OnTick_Town(void)

   434

{

   435

	if (_game_mode == GM_EDITOR) return;

   436

   437

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

   438

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

   439

	for (_cur_town_iter += GetTownArraySize();

   440

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   441

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   442

		uint32 i = _cur_town_ctr;

   443

   444

		if (++_cur_town_ctr >= GetTownArraySize())

   445

			_cur_town_ctr = 0;

   446

   447

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

   448

	}

   449

}

   450

   451

static RoadBits GetTownRoadMask(TileIndex tile)

   452

{

   453

	TrackBits b = GetAnyRoadTrackBits(tile);

   454

	RoadBits r = 0;

   455

   456

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   457

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   458

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

   459

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

   460

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

   461

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

   462

	return r;

   463

}

   464

   465

static bool IsRoadAllowedHere(TileIndex tile, int dir)

   466

{

   467

	Slope k;

   468

	Slope slope;

   469

   470

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

   471

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

   472

	TILE_ASSERT(tile);

   473

   474

	for (;;) {

   475

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

   476

		if (GetAnyRoadTrackBits(tile) == 0) {

   477

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

   478

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

   479

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

   480

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

   481

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

   482

				return false;

   483

		}

   484

   485

		slope = GetTileSlope(tile, NULL);

   486

		if (slope == SLOPE_FLAT) {

   487

no_slope:

   488

			// Tile has no slope

   489

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

   490

			if (HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]))), dir^2) ||

   491

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]))), dir^2) ||

   492

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir) ||

   493

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir))

   494

				return false;

   495