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_OLD_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

	_total_towns--;

    58

    59

	/* Delete all industries belonging to the town */

    60

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

    61

    62

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

    63

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

    64

		switch (GetTileType(tile)) {

    65

			case MP_HOUSE:

    66

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

    67

				break;

    68

    69

			case MP_STREET:

    70

			case MP_TUNNELBRIDGE:

    71

				if (IsTileOwner(tile, OWNER_TOWN) &&

    72

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

    73

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

    74

				break;

    75

    76

			default:

    77

				break;

    78

		}

    79

	}

    80

    81

	DeleteName(t->townnametype);

    82

	DeleteSubsidyWithTown(t->index);

    83

    84

	MarkWholeScreenDirty();

    85

}

    86

    87

// Local

    88

static int _grow_town_result;

    89

    90

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

    91

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

    92

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

    93

    94

static void TownDrawHouseLift(const TileInfo *ti)

    95

{

    96

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

    97

}

    98

    99

typedef void TownDrawTileProc(const TileInfo *ti);

   100

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   101

	TownDrawHouseLift

   102

};

   103

   104

   105

static void DrawTile_Town(TileInfo *ti)

   106

{

   107

	const DrawBuildingsTileStruct *dcts;

   108

	uint32 image;

   109

   110

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

   111

	{

   112

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

   113

		uint variant;

   114

		variant  = ti->x >> 4;

   115

		variant ^= ti->x >> 6;

   116

		variant ^= ti->y >> 4;

   117

		variant -= ti->y >> 6;

   118

		variant &= 3;

   119

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

   120

	}

   121

   122

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

   123

	DrawGroundSprite(dcts->ground);

   124

   125

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

   126

	image = dcts->building;

   127

	if (image != 0) {

   128

		if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);

   129

   130

		AddSortableSpriteToDraw(image,

   131

			ti->x + dcts->subtile_x,

   132

			ti->y + dcts->subtile_y,

   133

			dcts->width + 1,

   134

			dcts->height + 1,

   135

			dcts->dz,

   136

			ti->z

   137

		);

   138

   139

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   140

	}

   141

   142

	{

   143

		int proc = dcts->draw_proc - 1;

   144

   145

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

   146

	}

   147

}

   148

   149

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

   150

{

   151

	return GetTileMaxZ(tile);

   152

}

   153

   154

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   155

{

   156

	return SLOPE_FLAT;

   157

}

   158

   159

static void AnimateTile_Town(TileIndex tile)

   160

{

   161

	int pos, dest;

   162

   163

	if (_tick_counter & 3) return;

   164

   165

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

   166

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

   167

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

   168

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

   169

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

   170

		DeleteAnimatedTile(tile);

   171

		return;

   172

	}

   173

   174

	if (!IsLiftMoving(tile)) {

   175

		int i;

   176

   177

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

   178

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

   179

		 *  the height of 2 'normal' floors.

   180

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

   181

		do {

   182

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

   183

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

   184

   185

		SetLiftDestination(tile, i);

   186

	}

   187

   188

	pos = GetLiftPosition(tile);

   189

	dest = GetLiftDestination(tile) * 6;

   190

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

   191

	SetLiftPosition(tile, pos);

   192

   193

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

   194

   195

	MarkTileDirtyByTile(tile);

   196

}

   197

   198

static void UpdateTownRadius(Town *t);

   199

   200

static bool IsCloseToTown(TileIndex tile, uint dist)

   201

{

   202

	const Town* t;

   203

   204

	FOR_ALL_TOWNS(t) {

   205

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

   206

	}

   207

	return false;

   208

}

   209

   210

static void MarkTownSignDirty(Town *t)

   211

{

   212

	MarkAllViewportsDirty(

   213

		t->sign.left-6,

   214

		t->sign.top-3,

   215

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

   216

		t->sign.top + 45

   217

	);

   218

}

   219

   220

void UpdateTownVirtCoord(Town *t)

   221

{

   222

	Point pt;

   223

   224

	MarkTownSignDirty(t);

   225

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

   226

	SetDParam(0, t->index);

   227

	SetDParam(1, t->population);

   228

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

   229

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   230

	MarkTownSignDirty(t);

   231

}

   232

   233

static void ChangePopulation(Town *t, int mod)

   234

{

   235

	t->population += mod;

   236

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   237

	UpdateTownVirtCoord(t);

   238

   239

	if (_town_sort_order & 2) _town_sort_dirty = true;

   240

}

   241

   242

uint32 GetWorldPopulation(void)

   243

{

   244

	uint32 pop;

   245

	const Town* t;

   246

   247

	pop = 0;

   248

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

   249

	return pop;

   250

}

   251

   252

static void MakeSingleHouseBigger(TileIndex tile)

   253

{

   254

	assert(IsTileType(tile, MP_HOUSE));

   255

   256

	if (LiftHasDestination(tile)) return;

   257

   258

	IncHouseConstructionTick(tile);

   259

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

   260

   261

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

   262

   263

	if (GetHouseBuildingStage(tile) == TOWN_HOUSE_COMPLETED){

   264

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

   265

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

   266

	}

   267

	MarkTileDirtyByTile(tile);

   268

}

   269

   270

static void MakeTownHouseBigger(TileIndex tile)

   271

{

   272

	uint flags = _house_more_flags[GetHouseType(tile)];

   273

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

   274

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

   275

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

   276

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

   277

}

   278

   279

static void TileLoop_Town(TileIndex tile)

   280

{

   281

	int house;

   282

	Town *t;

   283

	uint32 r;

   284

   285

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   286

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

   287

		MakeTownHouseBigger(tile);

   288

		return;

   289

	}

   290

   291

	house = GetHouseType(tile);

   292

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

   293

   294

	t = GetTownByTile(tile);

   295

   296

	r = Random();

   297

   298

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

   299

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

   300

		uint moved;

   301

   302

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

   303

		t->new_max_pass += amt;

   304

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

   305

		t->new_act_pass += moved;

   306

	}

   307

   308

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

   309

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

   310

		uint moved;

   311

   312

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

   313

		t->new_max_mail += amt;

   314

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

   315

		t->new_act_mail += moved;

   316

	}

   317

   318

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

   319

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

   320

   321

		_current_player = OWNER_TOWN;

   322

   323

		ClearTownHouse(t, tile);

   324

   325

		// rebuild with another house?

   326

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

   327

   328

		_current_player = OWNER_NONE;

   329

	}

   330

}

   331

   332

static void ClickTile_Town(TileIndex tile)

   333

{

   334

	/* not used */

   335

}

   336

   337

static int32 ClearTile_Town(TileIndex tile, byte flags)

   338

{

   339

	int house, rating;

   340

	int32 cost;

   341

	Town *t;

   342

   343

	// safety checks

   344

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   345

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

   346

   347

	house = GetHouseType(tile);

   348

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

   349

   350

	rating = _housetype_remove_ratingmod[house];

   351

	_cleared_town_rating += rating;

   352

	_cleared_town = t = GetTownByTile(tile);

   353

   354

	if (IsValidPlayer(_current_player)) {

   355

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

   356

			SetDParam(0, t->index);

   357

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   358

		}

   359

	}

   360

   361

	if (flags & DC_EXEC) {

   362

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   363

		ClearTownHouse(t, tile);

   364

	}

   365

   366

	return cost;

   367

}

   368

   369

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   370

{

   371

	byte type = GetHouseType(tile);

   372

   373

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   374

	ac[CT_MAIL]       = _housetype_cargo_mail[type];

   375

	ac[CT_GOODS]      = _housetype_cargo_goods[type];

   376

	ac[CT_FOOD]       = _housetype_cargo_food[type];

   377

}

   378

   379

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   380

{

   381

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

   382

	if (GetHouseBuildingStage(tile) != TOWN_HOUSE_COMPLETED) {

   383

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

   384

		td->str = STR_2058_UNDER_CONSTRUCTION;

   385

	}

   386

   387

	td->owner = OWNER_TOWN;

   388

}

   389

   390

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   391

{

   392

	/* not used */

   393

	return 0;

   394

}

   395

   396

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

   397

{

   398

	/* not used */

   399

}

   400

   401

   402

static const TileIndexDiffC _roadblock_tileadd[] = {

   403

	{ 0, -1},

   404

	{ 1,  0},

   405

	{ 0,  1},

   406

	{-1,  0},

   407

   408

	// Store the first 3 elements again.

   409

	// Lets us rotate without using &3.

   410

	{ 0, -1},

   411

	{ 1,  0},

   412

	{ 0,  1}

   413

};

   414

   415

   416

static bool GrowTown(Town *t);

   417

   418

static void TownTickHandler(Town *t)

   419

{

   420

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

   421

		int i = t->grow_counter - 1;

   422

		if (i < 0) {

   423

			if (GrowTown(t)) {

   424

				i = t->growth_rate;

   425

			} else {

   426

				i = 0;

   427

			}

   428

		}

   429

		t->grow_counter = i;

   430

	}

   431

   432

	UpdateTownRadius(t);

   433

}

   434

   435

void OnTick_Town(void)

   436

{

   437

	if (_game_mode == GM_EDITOR) return;

   438

   439

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

   440

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

   441

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   442

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   443

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   444

		uint32 i = _cur_town_ctr;

   445

   446

		if (++_cur_town_ctr > GetMaxTownIndex())

   447

			_cur_town_ctr = 0;

   448

   449

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

   450

	}

   451

}

   452

   453

static RoadBits GetTownRoadMask(TileIndex tile)

   454

{

   455

	TrackBits b = GetAnyRoadTrackBits(tile);

   456

	RoadBits r = 0;

   457

   458

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   459

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   460

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

   461

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

   462

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

   463

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

   464

	return r;

   465

}

   466

   467

static bool IsRoadAllowedHere(TileIndex tile, int dir)

   468

{

   469

	Slope k;

   470

	Slope slope;

   471

   472

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

   473

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

   474

	TILE_ASSERT(tile);

   475

   476

	for (;;) {

   477

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

   478

		if (GetAnyRoadTrackBits(tile) == 0) {

   479

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

   480

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

   481

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

   482

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

   483

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

   484

				return false;

   485

		}

   486

   487

		slope = GetTileSlope(tile, NULL);

   488

		if (slope == SLOPE_FLAT) {

   489

no_slope:

   490

			// Tile has no slope

   491

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

   492

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

   493

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

   494

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

   495

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