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 "landscape.h"

    15

#include "tile.h"

    16

#include "town_map.h"

    17

#include "tunnel_map.h"

    18

#include "viewport.h"

    19

#include "town.h"

    20

#include "command.h"

    21

#include "gfx.h"

    22

#include "industry.h"

    23

#include "station.h"

    24

#include "vehicle.h"

    25

#include "player.h"

    26

#include "news.h"

    27

#include "saveload.h"

    28

#include "economy.h"

    29

#include "gui.h"

    30

#include "unmovable_map.h"

    31

#include "water_map.h"

    32

#include "variables.h"

    33

#include "bridge.h"

    34

#include "bridge_map.h"

    35

#include "date.h"

    36

#include "table/town_land.h"

    37

#include "genworld.h"

    38

#include "economy_new.h"

    39

#include "newgrf.h"

    40

#include "newgrf_callbacks.h"

    41

#include "newgrf_house.h"

    42

    43

/**

    44

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

    45

 */

    46

static void TownPoolNewBlock(uint start_item)

    47

{

    48

	Town *t;

    49

    50

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

    51

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

    52

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

    53

}

    54

    55

/* Initialize the town-pool */

    56

DEFINE_OLD_POOL(Town, Town, TownPoolNewBlock, NULL)

    57

    58

void DestroyTown(Town *t)

    59

{

    60

	Industry *i;

    61

	TileIndex tile;

    62

    63

	/* Delete town authority window

    64

	 * and remove from list of sorted towns */

    65

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    66

	_town_sort_dirty = true;

    67

	_total_towns--;

    68

    69

	/* Delete all industries belonging to the town */

    70

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

    71

    72

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

    73

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

    74

		switch (GetTileType(tile)) {

    75

			case MP_HOUSE:

    76

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

    77

				break;

    78

    79

			case MP_STREET:

    80

			case MP_TUNNELBRIDGE:

    81

				if (IsTileOwner(tile, OWNER_TOWN) &&

    82

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

    83

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

    84

				break;

    85

    86

			default:

    87

				break;

    88

		}

    89

	}

    90

    91

	DeleteName(t->townnametype);

    92

	DeleteSubsidyWithTown(t->index);

    93

    94

	MarkWholeScreenDirty();

    95

}

    96

    97

// Local

    98

static int _grow_town_result;

    99

   100

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

   101

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

   102

   103

static void TownDrawHouseLift(const TileInfo *ti)

   104

{

   105

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

   106

}

   107

   108

typedef void TownDrawTileProc(const TileInfo *ti);

   109

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   110

	TownDrawHouseLift

   111

};

   112

   113

uint OriginalTileRandomiser(uint x, uint y)

   114

{

   115

	uint variant;

   116

	variant  = x >> 4;

   117

	variant ^= x >> 6;

   118

	variant ^= y >> 4;

   119

	variant -= y >> 6;

   120

	variant &= 3;

   121

	return variant;

   122

}

   123

   124

static void DrawTile_Town(TileInfo *ti)

   125

{

   126

	const DrawBuildingsTileStruct *dcts;

   127

	SpriteID image;

   128

	SpriteID pal;

   129

	HouseID house_id = GetHouseType(ti->tile);

   130

   131

	if (house_id >= NEW_HOUSE_OFFSET) {

   132

		/* Houses don't necessarily need new graphics. If they don't have a

   133

		 * spritegroup associated with them, then the sprite for the substitute

   134

		 * house id is drawn instead. */

   135

		if (GetHouseSpecs(house_id)->spritegroup != NULL) {

   136

			DrawNewHouseTile(ti, house_id);

   137

			return;

   138

		} else {

   139

			house_id = GetHouseSpecs(house_id)->substitute_id;

   140

		}

   141

	}

   142

   143

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

   144

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

   145

   146

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

   147

   148

	image = dcts->ground.sprite;

   149

	pal   = dcts->ground.pal;

   150

	DrawGroundSprite(image, pal);

   151

   152

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

   153

	image = dcts->building.sprite;

   154

	if (image != 0) {

   155

		if (HASBIT(_transparent_opt, TO_HOUSES)) {

   156

			SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);

   157

			pal = PALETTE_TO_TRANSPARENT;

   158

		} else {

   159

			pal = dcts->building.pal;

   160

		}

   161

   162

		AddSortableSpriteToDraw(image, pal,

   163

			ti->x + dcts->subtile_x,

   164

			ti->y + dcts->subtile_y,

   165

			dcts->width + 1,

   166

			dcts->height + 1,

   167

			dcts->dz,

   168

			ti->z

   169

		);

   170

   171

		if (HASBIT(_transparent_opt, TO_HOUSES)) return;

   172

	}

   173

   174

	{

   175

		int proc = dcts->draw_proc - 1;

   176

   177

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

   178

	}

   179

}

   180

   181

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

   182

{

   183

	return GetTileMaxZ(tile);

   184

}

   185

   186

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   187

{

   188

	return SLOPE_FLAT;

   189

}

   190

   191

static void AnimateTile_Town(TileIndex tile)

   192

{

   193

	int pos, dest;

   194

   195

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

   196

		AnimateNewHouseTile(tile);

   197

		return;

   198

	}

   199

   200

	if (_tick_counter & 3) return;

   201

   202

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

   203

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

   204

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

   205

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

   206

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

   207

		DeleteAnimatedTile(tile);

   208

		return;

   209

	}

   210

   211

	if (!LiftHasDestination(tile)) {

   212

		int i;

   213

   214

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

   215

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

   216

		 *  the height of 2 'normal' floors.

   217

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

   218

		do {

   219

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

   220

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

   221

   222

		SetLiftDestination(tile, i);

   223

	}

   224

   225

	pos = GetLiftPosition(tile);

   226

	dest = GetLiftDestination(tile) * 6;

   227

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

   228

	SetLiftPosition(tile, pos);

   229

   230

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

   231

   232

	MarkTileDirtyByTile(tile);

   233

}

   234

   235

static void UpdateTownRadius(Town *t);

   236

   237

static bool IsCloseToTown(TileIndex tile, uint dist)

   238

{

   239

	const Town* t;

   240

   241

	FOR_ALL_TOWNS(t) {

   242

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

   243

	}

   244

	return false;

   245

}

   246

   247

static void MarkTownSignDirty(Town *t)

   248

{

   249

	MarkAllViewportsDirty(

   250

		t->sign.left-6,

   251

		t->sign.top-3,

   252

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

   253

		t->sign.top + 45

   254

	);

   255

}

   256

   257

void UpdateTownVirtCoord(Town *t)

   258

{

   259

	Point pt;

   260

   261

	MarkTownSignDirty(t);

   262

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

   263

	SetDParam(0, t->index);

   264

	SetDParam(1, t->population);

   265

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

   266

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   267

	MarkTownSignDirty(t);

   268

}

   269

   270

static void ChangePopulation(Town *t, int mod)

   271

{

   272

	t->population += mod;

   273

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   274

	UpdateTownVirtCoord(t);

   275

   276

	if (_town_sort_order & 2) _town_sort_dirty = true;

   277

}

   278

   279

uint32 GetWorldPopulation()

   280

{

   281

	uint32 pop;

   282

	const Town* t;

   283

   284

	pop = 0;

   285

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

   286

	return pop;

   287

}

   288

   289

static void MakeSingleHouseBigger(TileIndex tile)

   290

{

   291

	assert(IsTileType(tile, MP_HOUSE));

   292

   293

	if (LiftHasDestination(tile)) return;

   294

   295

	IncHouseConstructionTick(tile);

   296

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

   297

   298

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

   299

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

   300

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

   301

	}

   302

   303

	if (IsHouseCompleted(tile)) {

   304

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

   305

		 * building to the town. */

   306

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

   307

	}

   308

	MarkTileDirtyByTile(tile);

   309

}

   310

   311

static void MakeTownHouseBigger(TileIndex tile)

   312

{

   313

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

   314

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

   315

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

   316

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

   317

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

   318

}

   319

   320

static void TileLoop_Town(TileIndex tile)

   321

{

   322

	Town *t;

   323

	uint32 r;

   324

	HouseID house_id = GetHouseType(tile);

   325

	HouseSpec *hs = GetHouseSpecs(house_id);

   326

   327

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

   328

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

   329

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

   330

   331

	if (!IsHouseCompleted(tile)) {

   332

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

   333

		MakeTownHouseBigger(tile);

   334

		return;

   335

	}

   336

   337

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

   338

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

   339

   340

	t = GetTownByTile(tile);

   341

   342

	r = Random();

   343

   344

	if (GB(r, 0, 8) < (t->GetActivity() * _eco->GetActivity() * 8)) {

   345

		int amt = hs->population / 8 + 1;

   346

		t->new_max_pass += amt;

   347

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

   348

		t->new_act_pass += moved;

   349

	}

   350

   351

	if (GB(r, 8, 8) < (t->GetActivity() * _eco->GetActivity() * 8)) {

   352

		int amt = hs->mail_generation / 8 + 1;

   353

		t->new_max_pass += amt;

   354

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

   355

		t->new_act_pass += moved;

   356

	}

   357

   358

	_current_player = OWNER_TOWN;

   359

   360

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

   361

		t->time_until_rebuild = GB(r, 16, 8) + 192;

   362

   363

		ClearTownHouse(t, tile);

   364

   365

		/* Rebuild with another house? */

   366

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

   367

	}

   368

   369

	_current_player = OWNER_NONE;

   370

}

   371

   372

static void ClickTile_Town(TileIndex tile)

   373

{

   374

	/* not used */

   375

}

   376

   377

static int32 ClearTile_Town(TileIndex tile, byte flags)

   378

{

   379

	int rating;

   380

	int32 cost;

   381

	Town *t;

   382

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

   383

   384

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

   385

	if (!CanDeleteHouse(tile)) return CMD_ERROR;

   386

   387

	cost = _eco->GetPrice(CEconomy::REMOVE_HOUSE) * hs->removal_cost >> 8;

   388

   389

	rating = hs->remove_rating_decrease;

   390

	_cleared_town_rating += rating;

   391

	_cleared_town = t = GetTownByTile(tile);

   392

   393

	if (IsValidPlayer(_current_player)) {

   394

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

   395

			SetDParam(0, t->index);

   396

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   397

		}

   398

	}

   399

   400

	if (flags & DC_EXEC) {

   401

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   402

		ClearTownHouse(t, tile);

   403

	}

   404

   405

	return cost;

   406

}

   407

   408

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   409

{

   410

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

   411

   412

	for (uint8 i = 0; i < 3; i++) ac[hs->accepts_cargo[i]] = hs->cargo_acceptance[i];

   413

}

   414

   415

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   416

{

   417

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

   418

	if (!IsHouseCompleted(tile)) {

   419

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

   420

		td->str = STR_2058_UNDER_CONSTRUCTION;

   421

	}

   422

   423

	td->owner = OWNER_TOWN;

   424

}

   425

   426

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   427

{

   428

	/* not used */

   429

	return 0;

   430

}

   431

   432

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

   433

{

   434

	/* not used */

   435

}

   436

   437

   438

static const TileIndexDiffC _roadblock_tileadd[] = {

   439

	{ 0, -1},

   440

	{ 1,  0},

   441

	{ 0,  1},

   442

	{-1,  0},

   443

   444

	/* Store the first 3 elements again.

   445

	 * Lets us rotate without using &3. */

   446

	{ 0, -1},

   447

	{ 1,  0},

   448

	{ 0,  1}

   449

};

   450

   451

   452

static bool GrowTown(Town *t);

   453

   454

static void TownTickHandler(Town *t)

   455

{

   456

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

   457

		int i = t->grow_counter - 1;

   458

		if (i < 0) {

   459

			if (GrowTown(t)) {

   460

				i = t->growth_rate;

   461

			} else {

   462

				i = 0;

   463

			}

   464

		}

   465

		t->grow_counter = i;

   466

	}

   467

   468

	UpdateTownRadius(t);

   469

}

   470

   471

void OnTick_Town()

   472

{

   473

	if (_game_mode == GM_EDITOR) return;

   474

   475

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

   476

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

   477

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   478

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   479

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   480

		uint32 i = _cur_town_ctr;

   481

   482

		if (++_cur_town_ctr > GetMaxTownIndex())

   483

			_cur_town_ctr = 0;

   484

   485

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

   486

	}

   487

}

   488

   489

static RoadBits GetTownRoadMask(TileIndex tile)

   490

{

   491

	TrackBits b = GetAnyRoadTrackBits(tile);