1

/* $Id$ */

     2

     3

/** @file town_cmd.cpp */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "functions.h"

     8

#include "debug.h"

     9

#include "strings.h"

    10

#include "road_map.h"

    11

#include "table/strings.h"

    12

#include "table/sprites.h"

    13

#include "map.h"

    14

#include "tile.h"

    15

#include "town_map.h"

    16

#include "tunnel_map.h"

    17

#include "viewport.h"

    18

#include "town.h"

    19

#include "command.h"

    20

#include "gfx.h"

    21

#include "industry.h"

    22

#include "station.h"

    23

#include "vehicle.h"

    24

#include "player.h"

    25

#include "news.h"

    26

#include "saveload.h"

    27

#include "economy.h"

    28

#include "gui.h"

    29

#include "unmovable_map.h"

    30

#include "water_map.h"

    31

#include "variables.h"

    32

#include "bridge.h"

    33

#include "bridge_map.h"

    34

#include "date.h"

    35

#include "table/town_land.h"

    36

#include "genworld.h"

    37

#include "newgrf.h"

    38

#include "newgrf_callbacks.h"

    39

#include "newgrf_house.h"

    40

    41

/**

    42

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

    43

 */

    44

static void TownPoolNewBlock(uint start_item)

    45

{

    46

	Town *t;

    47

    48

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

    49

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

    50

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

    51

}

    52

    53

/* Initialize the town-pool */

    54

DEFINE_OLD_POOL(Town, Town, TownPoolNewBlock, NULL)

    55

    56

void DestroyTown(Town *t)

    57

{

    58

	Industry *i;

    59

	TileIndex tile;

    60

    61

	/* Delete town authority window

    62

	 * and remove from list of sorted towns */

    63

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    64

	_town_sort_dirty = true;

    65

	_total_towns--;

    66

    67

	/* Delete all industries belonging to the town */

    68

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

    69

    70

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

    71

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

    72

		switch (GetTileType(tile)) {

    73

			case MP_HOUSE:

    74

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

    75

				break;

    76

    77

			case MP_STREET:

    78

			case MP_TUNNELBRIDGE:

    79

				if (IsTileOwner(tile, OWNER_TOWN) &&

    80

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

    81

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

    82

				break;

    83

    84

			default:

    85

				break;

    86

		}

    87

	}

    88

    89

	DeleteName(t->townnametype);

    90

	DeleteSubsidyWithTown(t->index);

    91

    92

	MarkWholeScreenDirty();

    93

}

    94

    95

// Local

    96

static int _grow_town_result;

    97

    98

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

    99

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

   100

   101

static void TownDrawHouseLift(const TileInfo *ti)

   102

{

   103

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

   104

}

   105

   106

typedef void TownDrawTileProc(const TileInfo *ti);

   107

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   108

	TownDrawHouseLift

   109

};

   110

   111

uint OriginalTileRandomiser(uint x, uint y)

   112

{

   113

	uint variant;

   114

	variant  = x >> 4;

   115

	variant ^= x >> 6;

   116

	variant ^= y >> 4;

   117

	variant -= y >> 6;

   118

	variant &= 3;

   119

	return variant;

   120

}

   121

   122

static void DrawTile_Town(TileInfo *ti)

   123

{

   124

	const DrawBuildingsTileStruct *dcts;

   125

	SpriteID image;

   126

	SpriteID pal;

   127

	HouseID house_id = GetHouseType(ti->tile);

   128

   129

	if (house_id >= NEW_HOUSE_OFFSET) {

   130

		DrawNewHouseTile(ti, house_id);

   131

		return;

   132

	}

   133

   134

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

   135

	dcts = &_town_draw_tile_data[house_id << 4 | OriginalTileRandomiser(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)];

   136

   137

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

   138

   139

	image = dcts->ground.sprite;

   140

	pal   = dcts->ground.pal;

   141

	DrawGroundSprite(image, pal);

   142

   143

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

   144

	image = dcts->building.sprite;

   145

	if (image != 0) {

   146

		if (_display_opt & DO_TRANS_BUILDINGS) {

   147

			SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);

   148

			pal = PALETTE_TO_TRANSPARENT;

   149

		} else {

   150

			pal = dcts->building.pal;

   151

		}

   152

   153

		AddSortableSpriteToDraw(image, pal,

   154

			ti->x + dcts->subtile_x,

   155

			ti->y + dcts->subtile_y,

   156

			dcts->width + 1,

   157

			dcts->height + 1,

   158

			dcts->dz,

   159

			ti->z

   160

		);

   161

   162

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   163

	}

   164

   165

	{

   166

		int proc = dcts->draw_proc - 1;

   167

   168

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

   169

	}

   170

}

   171

   172

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

   173

{

   174

	return GetTileMaxZ(tile);

   175

}

   176

   177

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   178

{

   179

	return SLOPE_FLAT;

   180

}

   181

   182

static void AnimateTile_Town(TileIndex tile)

   183

{

   184

	int pos, dest;

   185

   186

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

   187

		AnimateNewHouseTile(tile);

   188

		return;

   189

	}

   190

   191

	if (_tick_counter & 3) return;

   192

   193

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

   194

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

   195

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

   196

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

   197

	if (!(GetHouseSpecs(GetHouseType(tile))->building_flags & BUILDING_IS_ANIMATED)) {

   198

		DeleteAnimatedTile(tile);

   199

		return;

   200

	}

   201

   202

	if (!LiftHasDestination(tile)) {

   203

		int i;

   204

   205

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

   206

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

   207

		 *  the height of 2 'normal' floors.

   208

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

   209

		do {

   210

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

   211

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

   212

   213

		SetLiftDestination(tile, i);

   214

	}

   215

   216

	pos = GetLiftPosition(tile);

   217

	dest = GetLiftDestination(tile) * 6;

   218

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

   219

	SetLiftPosition(tile, pos);

   220

   221

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

   222

   223

	MarkTileDirtyByTile(tile);

   224

}

   225

   226

static void UpdateTownRadius(Town *t);

   227

   228

static bool IsCloseToTown(TileIndex tile, uint dist)

   229

{

   230

	const Town* t;

   231

   232

	FOR_ALL_TOWNS(t) {

   233

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

   234

	}

   235

	return false;

   236

}

   237

   238

static void MarkTownSignDirty(Town *t)

   239

{

   240

	MarkAllViewportsDirty(

   241

		t->sign.left-6,

   242

		t->sign.top-3,

   243

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

   244

		t->sign.top + 45

   245

	);

   246

}

   247

   248

void UpdateTownVirtCoord(Town *t)

   249

{

   250

	Point pt;

   251

   252

	MarkTownSignDirty(t);

   253

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

   254

	SetDParam(0, t->index);

   255

	SetDParam(1, t->population);

   256

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

   257

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   258

	MarkTownSignDirty(t);

   259

}

   260

   261

static void ChangePopulation(Town *t, int mod)

   262

{

   263

	t->population += mod;

   264

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   265

	UpdateTownVirtCoord(t);

   266

   267

	if (_town_sort_order & 2) _town_sort_dirty = true;

   268

}

   269

   270

uint32 GetWorldPopulation()

   271

{

   272

	uint32 pop;

   273

	const Town* t;

   274

   275

	pop = 0;

   276

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

   277

	return pop;

   278

}

   279

   280

static void MakeSingleHouseBigger(TileIndex tile)

   281

{

   282

	assert(IsTileType(tile, MP_HOUSE));

   283

   284

	if (LiftHasDestination(tile)) return;

   285

   286

	IncHouseConstructionTick(tile);

   287

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

   288

   289

	if (HASBIT(GetHouseSpecs(GetHouseType(tile))->callback_mask, CBM_CONSTRUCTION_STATE_CHANGE)) {

   290

		uint16 callback_res = GetHouseCallback(CBID_CONSTRUCTION_STATE_CHANGE, 0, GetHouseType(tile), GetTownByTile(tile), tile);

   291

		if (callback_res != CALLBACK_FAILED) ChangeHouseAnimationFrame(tile, callback_res);

   292

	}

   293

   294

	if (IsHouseCompleted(tile)) {

   295

		/* Now that construction is complete, we can add the population of the

   296

		 * building to the town. */

   297

		ChangePopulation(GetTownByTile(tile), GetHouseSpecs(GetHouseType(tile))->population);

   298

	}

   299

	MarkTileDirtyByTile(tile);

   300

}

   301

   302

static void MakeTownHouseBigger(TileIndex tile)

   303

{

   304

	uint flags = GetHouseSpecs(GetHouseType(tile))->building_flags;

   305

	if (flags & BUILDING_HAS_1_TILE)  MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));

   306

	if (flags & BUILDING_2_TILES_Y)   MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));

   307

	if (flags & BUILDING_2_TILES_X)   MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));

   308

	if (flags & BUILDING_HAS_4_TILES) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));

   309

}

   310

   311

static void TileLoop_Town(TileIndex tile)

   312

{

   313

	Town *t;

   314

	uint32 r;

   315

	HouseID house_id = GetHouseType(tile);

   316

	HouseSpec *hs = GetHouseSpecs(house_id);

   317

   318

	/* NewHouseTileLoop returns false if Callback 21 succeeded, i.e. the house

   319

	 * doesn't exist any more, so don't continue here. */

   320

	if (house_id >= NEW_HOUSE_OFFSET && !NewHouseTileLoop(tile)) return;

   321

   322

	if (!IsHouseCompleted(tile)) {

   323

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

   324

		MakeTownHouseBigger(tile);

   325

		return;

   326

	}

   327

   328

	/* If the lift has a destination, it is already an animated tile. */

   329

	if ((hs->building_flags & BUILDING_IS_ANIMATED) && house_id < NEW_HOUSE_OFFSET && !LiftHasDestination(tile) && CHANCE16(1, 2)) AddAnimatedTile(tile);

   330

   331

	t = GetTownByTile(tile);

   332

   333

	r = Random();

   334

   335

	if (GB(r, 0, 8) < hs->population) {

   336

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

   337

		uint moved;

   338

   339

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

   340

		t->new_max_pass += amt;

   341

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

   342

		t->new_act_pass += moved;

   343

	}

   344

   345

	if (GB(r, 8, 8) < hs->mail_generation) {

   346

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

   347

		uint moved;

   348

   349

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

   350

		t->new_max_mail += amt;

   351

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

   352

		t->new_act_mail += moved;

   353

	}

   354

   355

	_current_player = OWNER_TOWN;

   356

   357

	if (hs->building_flags & BUILDING_HAS_1_TILE && HASBIT(t->flags12, TOWN_IS_FUNDED) && CanDeleteHouse(tile) && --t->time_until_rebuild == 0) {

   358

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

   359

   360

		ClearTownHouse(t, tile);

   361

   362

		// rebuild with another house?

   363

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

   364

	}

   365

   366

	_current_player = OWNER_NONE;

   367

}

   368

   369

static void ClickTile_Town(TileIndex tile)

   370

{

   371

	/* not used */

   372

}

   373

   374

static int32 ClearTile_Town(TileIndex tile, byte flags)

   375

{

   376

	int rating;

   377

	int32 cost;

   378

	Town *t;

   379

	HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   380

   381

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

   382

	if (!CanDeleteHouse(tile)) return CMD_ERROR;

   383

   384

	cost = _price.remove_house * hs->removal_cost >> 8;

   385

   386

	rating = hs->remove_rating_decrease;

   387

	_cleared_town_rating += rating;

   388

	_cleared_town = t = GetTownByTile(tile);

   389

   390

	if (IsValidPlayer(_current_player)) {

   391

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

   392

			SetDParam(0, t->index);

   393

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   394

		}

   395

	}

   396

   397

	if (flags & DC_EXEC) {

   398

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   399

		ClearTownHouse(t, tile);

   400

	}

   401

   402

	return cost;

   403

}

   404

   405

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   406

{

   407

	HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   408

   410

}

   411

   412

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   413

{

   414

	td->str = GetHouseSpecs(GetHouseType(tile))->building_name;

   415

	if (!IsHouseCompleted(tile)) {

   416

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

   417

		td->str = STR_2058_UNDER_CONSTRUCTION;

   418

	}

   419

   420

	td->owner = OWNER_TOWN;

   421

}

   422

   423

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   424

{

   425

	/* not used */

   426

	return 0;

   427

}

   428

   429

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

   430

{

   431

	/* not used */

   432

}

   433

   434

   435

static const TileIndexDiffC _roadblock_tileadd[] = {

   436

	{ 0, -1},

   437

	{ 1,  0},

   438

	{ 0,  1},

   439

	{-1,  0},

   440

   441

	// Store the first 3 elements again.

   442

	// Lets us rotate without using &3.

   443

	{ 0, -1},

   444

	{ 1,  0},

   445

	{ 0,  1}

   446

};

   447

   448

   449

static bool GrowTown(Town *t);

   450

   451

static void TownTickHandler(Town *t)

   452

{

   453

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

   454

		int i = t->grow_counter - 1;

   455

		if (i < 0) {

   456

			if (GrowTown(t)) {

   457

				i = t->growth_rate;

   458

			} else {

   459

				i = 0;

   460

			}

   461

		}

   462

		t->grow_counter = i;

   463

	}

   464

   465

	UpdateTownRadius(t);

   466

}

   467

   468

void OnTick_Town()

   469

{

   470

	if (_game_mode == GM_EDITOR) return;

   471

   472

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

   473

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

   474

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   475

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   476

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   477

		uint32 i = _cur_town_ctr;

   478

   479

		if (++_cur_town_ctr > GetMaxTownIndex())

   480

			_cur_town_ctr = 0;

   481

   482

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

   483

	}

   484

}

   485

   486

static RoadBits GetTownRoadMask(TileIndex tile)

   487

{

   488

	TrackBits b = GetAnyRoadTrackBits(tile);

   489

	RoadBits r = ROAD_NONE;

   490

   491

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   492

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   493