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 "newgrf.h"

    39

#include "newgrf_callbacks.h"

    40

#include "newgrf_house.h"

    41

    42

/**

    43

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

    44

 */

    45

static void TownPoolNewBlock(uint start_item)

    46

{

    47

	Town *t;

    48

    49

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

    50

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

    51

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

    52

}

    53

    54

/* Initialize the town-pool */

    55

DEFINE_OLD_POOL(Town, Town, TownPoolNewBlock, NULL)

    56

    57

void DestroyTown(Town *t)

    58

{

    59

	Industry *i;

    60

	TileIndex tile;

    61

    62

	/* Delete town authority window

    63

	 * and remove from list of sorted towns */

    64

	DeleteWindowById(WC_TOWN_VIEW, t->index);

    65

	_town_sort_dirty = true;

    66

	_total_towns--;

    67

    68

	/* Delete all industries belonging to the town */

    69

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

    70

    71

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

    72

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

    73

		switch (GetTileType(tile)) {

    74

			case MP_HOUSE:

    75

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

    76

				break;

    77

    78

			case MP_STREET:

    79

			case MP_TUNNELBRIDGE:

    80

				if (IsTileOwner(tile, OWNER_TOWN) &&

    81

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

    82

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

    83

				break;

    84

    85

			default:

    86

				break;

    87

		}

    88

	}

    89

    90

	DeleteName(t->townnametype);

    91

	DeleteSubsidyWithTown(t->index);

    92

    93

	MarkWholeScreenDirty();

    94

}

    95

    96

// Local

    97

static int _grow_town_result;

    98

    99

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

   100

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

   101

   102

static void TownDrawHouseLift(const TileInfo *ti)

   103

{

   104

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

   105

}

   106

   107

typedef void TownDrawTileProc(const TileInfo *ti);

   108

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

   109

	TownDrawHouseLift

   110

};

   111

   112

uint OriginalTileRandomiser(uint x, uint y)

   113

{

   114

	uint variant;

   115

	variant  = x >> 4;

   116

	variant ^= x >> 6;

   117

	variant ^= y >> 4;

   118

	variant -= y >> 6;

   119

	variant &= 3;

   120

	return variant;

   121

}

   122

   123

static void DrawTile_Town(TileInfo *ti)

   124

{

   125

	const DrawBuildingsTileStruct *dcts;

   126

	SpriteID image;

   127

	SpriteID pal;

   128

	HouseID house_id = GetHouseType(ti->tile);

   129

   130

	if (house_id >= NEW_HOUSE_OFFSET) {

   131

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

   132

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

   133

		 * house id is drawn instead. */

   134

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

   135

			DrawNewHouseTile(ti, house_id);

   136

			return;

   137

		} else {

   138

			house_id = GetHouseSpecs(house_id)->substitute_id;

   139

		}

   140

	}

   141

   142

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

   143

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

   144

   145

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

   146

   147

	image = dcts->ground.sprite;

   148

	pal   = dcts->ground.pal;

   149

	DrawGroundSprite(image, pal);

   150

   151

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

   152

	image = dcts->building.sprite;

   153

	if (image != 0) {

   154

		if (HASBIT(_transparent_opt, TO_HOUSES)) {

   155

			SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);

   156

			pal = PALETTE_TO_TRANSPARENT;

   157

		} else {

   158

			pal = dcts->building.pal;

   159

		}

   160

   161

		AddSortableSpriteToDraw(image, pal,

   162

			ti->x + dcts->subtile_x,

   163

			ti->y + dcts->subtile_y,

   164

			dcts->width + 1,

   165

			dcts->height + 1,

   166

			dcts->dz,

   167

			ti->z

   168

		);

   169

   170

		if (HASBIT(_transparent_opt, TO_HOUSES)) return;

   171

	}

   172

   173

	{

   174

		int proc = dcts->draw_proc - 1;

   175

   176

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

   177

	}

   178

}

   179

   180

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

   181

{

   182

	return GetTileMaxZ(tile);

   183

}

   184

   185

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   186

{

   187

	return SLOPE_FLAT;

   188

}

   189

   190

static void AnimateTile_Town(TileIndex tile)

   191

{

   192

	int pos, dest;

   193

   194

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

   195

		AnimateNewHouseTile(tile);

   196

		return;

   197

	}

   198

   199

	if (_tick_counter & 3) return;

   200

   201

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

   202

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

   203

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

   204

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

   205

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

   206

		DeleteAnimatedTile(tile);

   207

		return;

   208

	}

   209

   210

	if (!LiftHasDestination(tile)) {

   211

		int i;

   212

   213

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

   214

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

   215

		 *  the height of 2 'normal' floors.

   216

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

   217

		do {

   218

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

   219

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

   220

   221

		SetLiftDestination(tile, i);

   222

	}

   223

   224

	pos = GetLiftPosition(tile);

   225

	dest = GetLiftDestination(tile) * 6;

   226

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

   227

	SetLiftPosition(tile, pos);

   228

   229

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

   230

   231

	MarkTileDirtyByTile(tile);

   232

}

   233

   234

static void UpdateTownRadius(Town *t);

   235

   236

static bool IsCloseToTown(TileIndex tile, uint dist)

   237

{

   238

	const Town* t;

   239

   240

	FOR_ALL_TOWNS(t) {

   241

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

   242

	}

   243

	return false;

   244

}

   245

   246

static void MarkTownSignDirty(Town *t)

   247

{

   248

	MarkAllViewportsDirty(

   249

		t->sign.left-6,

   250

		t->sign.top-3,

   251

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

   252

		t->sign.top + 45

   253

	);

   254

}

   255

   256

void UpdateTownVirtCoord(Town *t)

   257

{

   258

	Point pt;

   259

   260

	MarkTownSignDirty(t);

   261

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

   262

	SetDParam(0, t->index);

   263

	SetDParam(1, t->population);

   264

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

   265

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   266

	MarkTownSignDirty(t);

   267

}

   268

   269

static void ChangePopulation(Town *t, int mod)

   270

{

   271

	t->population += mod;

   272

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   273

	UpdateTownVirtCoord(t);

   274

   275

	if (_town_sort_order & 2) _town_sort_dirty = true;

   276

}

   277

   278

uint32 GetWorldPopulation()

   279

{

   280

	uint32 pop;

   281

	const Town* t;

   282

   283

	pop = 0;

   284

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

   285

	return pop;

   286

}

   287

   288

static void MakeSingleHouseBigger(TileIndex tile)

   289

{

   290

	assert(IsTileType(tile, MP_HOUSE));

   291

   292

	if (LiftHasDestination(tile)) return;

   293

   294

	IncHouseConstructionTick(tile);

   295

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

   296

   297

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

   298

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

   299

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

   300

	}

   301

   302

	if (IsHouseCompleted(tile)) {

   303

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

   304

		 * building to the town. */

   305

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

   306

	}

   307

	MarkTileDirtyByTile(tile);

   308

}

   309

   310

static void MakeTownHouseBigger(TileIndex tile)

   311

{

   312

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

   313

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

   314

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

   315

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

   316

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

   317

}

   318

   319

static void TileLoop_Town(TileIndex tile)

   320

{

   321

	Town *t;

   322

	uint32 r;

   323

	HouseID house_id = GetHouseType(tile);

   324

	HouseSpec *hs = GetHouseSpecs(house_id);

   325

   326

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

   327

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

   328

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

   329

   330

	if (!IsHouseCompleted(tile)) {

   331

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

   332

		MakeTownHouseBigger(tile);

   333

		return;

   334

	}

   335

   336

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

   337

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

   338

   339

	t = GetTownByTile(tile);

   340

   341

	r = Random();

   342

   343

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

   344

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

   345

		uint moved;

   346

   347

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

   348

		t->new_max_pass += amt;

   349

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

   350

		t->new_act_pass += moved;

   351

	}

   352

   353

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

   354

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

   355

		uint moved;

   356

   357

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

   358

		t->new_max_mail += amt;

   359

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

   360

		t->new_act_mail += moved;

   361

	}

   362

   363

	_current_player = OWNER_TOWN;

   364

   365

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

   367

   368

		ClearTownHouse(t, tile);

   369

   371

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

   372

	}

   373

   374

	_current_player = OWNER_NONE;

   375

}

   376

   377

static void ClickTile_Town(TileIndex tile)

   378

{

   379

	/* not used */

   380

}

   381

   382

static int32 ClearTile_Town(TileIndex tile, byte flags)

   383

{

   384

	int rating;

   385

	int32 cost;

   386

	Town *t;

   387

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

   388

   389

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

   390

	if (!CanDeleteHouse(tile)) return CMD_ERROR;

   391

   392

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

   393

   394

	rating = hs->remove_rating_decrease;

   395

	_cleared_town_rating += rating;

   396

	_cleared_town = t = GetTownByTile(tile);

   397

   398

	if (IsValidPlayer(_current_player)) {

   399

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

   400

			SetDParam(0, t->index);

   401

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   402

		}

   403

	}

   404

   405

	if (flags & DC_EXEC) {

   406

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   407

		ClearTownHouse(t, tile);

   408

	}

   409

   410

	return cost;

   411

}

   412

   413

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   414

{

   415

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

   416

   417

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

   418

}

   419

   420

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   421

{

   422

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

   423

	if (!IsHouseCompleted(tile)) {

   424

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

   425

		td->str = STR_2058_UNDER_CONSTRUCTION;

   426

	}

   427

   428

	td->owner = OWNER_TOWN;

   429

}

   430

   431

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   432

{

   433

	/* not used */

   434

	return 0;

   435

}

   436

   437

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

   438

{

   439

	/* not used */

   440

}

   441

   442

   443

static const TileIndexDiffC _roadblock_tileadd[] = {

   444

	{ 0, -1},

   445

	{ 1,  0},

   446

	{ 0,  1},

   447

	{-1,  0},

   448

   449

	/* Store the first 3 elements again.

   450

	 * Lets us rotate without using &3. */

   451

	{ 0, -1},

   452

	{ 1,  0},

   453

	{ 0,  1}

   454

};

   455

   456

   457

static bool GrowTown(Town *t);

   458

   459

static void TownTickHandler(Town *t)

   460

{

   461

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

   462

		int i = t->grow_counter - 1;

   463

		if (i < 0) {

   464

			if (GrowTown(t)) {

   465

				i = t->growth_rate;

   466

			} else {

   467

				i = 0;

   468

			}

   469

		}

   470

		t->grow_counter = i;

   471

	}

   472

   473

	UpdateTownRadius(t);

   474

}

   475

   476

void OnTick_Town()

   477

{

   478

	if (_game_mode == GM_EDITOR) return;

   479

   480

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

   481

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

   482

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   483

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   484

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   485

		uint32 i = _cur_town_ctr;

   486

   487

		if (++_cur_town_ctr > GetMaxTownIndex())

   488

			_cur_town_ctr = 0;

   489

   490

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

   491

	}

   492

}