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 "economy_new.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

		DrawNewHouseTile(ti, house_id);

   132

		return;

   133

	}

   134

   135

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

   136

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

   137

   138

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

   139

   140

	image = dcts->ground.sprite;

   141

	pal   = dcts->ground.pal;

   142

	DrawGroundSprite(image, pal);

   143

   144

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

   145

	image = dcts->building.sprite;

   146

	if (image != 0) {

   147

		if (_display_opt & DO_TRANS_BUILDINGS) {

   148

			SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);

   149

			pal = PALETTE_TO_TRANSPARENT;

   150

		} else {

   151

			pal = dcts->building.pal;

   152

		}

   153

   154

		AddSortableSpriteToDraw(image, pal,

   155

			ti->x + dcts->subtile_x,

   156

			ti->y + dcts->subtile_y,

   157

			dcts->width + 1,

   158

			dcts->height + 1,

   159

			dcts->dz,

   160

			ti->z

   161

		);

   162

   163

		if (_display_opt & DO_TRANS_BUILDINGS) return;

   164

	}

   165

   166

	{

   167

		int proc = dcts->draw_proc - 1;

   168

   169

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

   170

	}

   171

}

   172

   173

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

   174

{

   175

	return GetTileMaxZ(tile);

   176

}

   177

   178

static Slope GetSlopeTileh_Town(TileIndex tile, Slope tileh)

   179

{

   180

	return SLOPE_FLAT;

   181

}

   182

   183

static void AnimateTile_Town(TileIndex tile)

   184

{

   185

	int pos, dest;

   186

   187

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

   188

		AnimateNewHouseTile(tile);

   189

		return;

   190

	}

   191

   192

	if (_tick_counter & 3) return;

   193

   194

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

   195

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

   196

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

   197

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

   198

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

   199

		DeleteAnimatedTile(tile);

   200

		return;

   201

	}

   202

   203

	if (!LiftHasDestination(tile)) {

   204

		int i;

   205

   206

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

   207

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

   208

		 *  the height of 2 'normal' floors.

   209

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

   210

		do {

   211

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

   212

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

   213

   214

		SetLiftDestination(tile, i);

   215

	}

   216

   217

	pos = GetLiftPosition(tile);

   218

	dest = GetLiftDestination(tile) * 6;

   219

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

   220

	SetLiftPosition(tile, pos);

   221

   222

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

   223

   224

	MarkTileDirtyByTile(tile);

   225

}

   226

   227

static void UpdateTownRadius(Town *t);

   228

   229

static bool IsCloseToTown(TileIndex tile, uint dist)

   230

{

   231

	const Town* t;

   232

   233

	FOR_ALL_TOWNS(t) {

   234

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

   235

	}

   236

	return false;

   237

}

   238

   239

static void MarkTownSignDirty(Town *t)

   240

{

   241

	MarkAllViewportsDirty(

   242

		t->sign.left-6,

   243

		t->sign.top-3,

   244

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

   245

		t->sign.top + 45

   246

	);

   247

}

   248

   249

void UpdateTownVirtCoord(Town *t)

   250

{

   251

	Point pt;

   252

   253

	MarkTownSignDirty(t);

   254

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

   255

	SetDParam(0, t->index);

   256

	SetDParam(1, t->population);

   257

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

   258

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   259

	MarkTownSignDirty(t);

   260

}

   261

   262

static void ChangePopulation(Town *t, int mod)

   263

{

   264

	t->population += mod;

   265

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   266

	UpdateTownVirtCoord(t);

   267

   268

	if (_town_sort_order & 2) _town_sort_dirty = true;

   269

}

   270

   271

uint32 GetWorldPopulation()

   272

{

   273

	uint32 pop;

   274

	const Town* t;

   275

   276

	pop = 0;

   277

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

   278

	return pop;

   279

}

   280

   281

static void MakeSingleHouseBigger(TileIndex tile)

   282

{

   283

	assert(IsTileType(tile, MP_HOUSE));

   284

   285

	if (LiftHasDestination(tile)) return;

   286

   287

	IncHouseConstructionTick(tile);

   288

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

   289

   290

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

   291

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

   292

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

   293

	}

   294

   295

	if (IsHouseCompleted(tile)) {

   296

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

   297

		 * building to the town. */

   298

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

   299

	}

   300

	MarkTileDirtyByTile(tile);

   301

}

   302

   303

static void MakeTownHouseBigger(TileIndex tile)

   304

{

   305

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

   306

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

   307

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

   308

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

   309

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

   310

}

   311

   312

static void TileLoop_Town(TileIndex tile)

   313

{

   314

	Town *t;

   315

	uint32 r;

   316

	HouseID house_id = GetHouseType(tile);

   317

	HouseSpec *hs = GetHouseSpecs(house_id);

   318

   319

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

   320

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

   321

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

   322

   323

	if (!IsHouseCompleted(tile)) {

   324

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

   325

		MakeTownHouseBigger(tile);

   326

		return;

   327

	}

   328

   329

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

   330

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

   331

   332

	t = GetTownByTile(tile);

   333

   334

	r = Random();

   335

   336

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

   337

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

   338

		t->new_max_pass += amt;

   339

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

   340

		t->new_act_pass += moved;

   341

	}

   342

   343

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

   344

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

   345

		t->new_max_pass += amt;

   346

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

   347

		t->new_act_pass += moved;

   348

	}

   349

   350

	_current_player = OWNER_TOWN;

   351

   352

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

   353

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

   354

   355

		ClearTownHouse(t, tile);

   356

   357

		// rebuild with another house?

   358

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

   359

	}

   360

   361

	_current_player = OWNER_NONE;

   362

}

   363

   364

static void ClickTile_Town(TileIndex tile)

   365

{

   366

	/* not used */

   367

}

   368

   369

static int32 ClearTile_Town(TileIndex tile, byte flags)

   370

{

   371

	int rating;

   372

	int32 cost;

   373

	Town *t;

   374

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

   375

   376

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

   377

	if (!CanDeleteHouse(tile)) return CMD_ERROR;

   378

   379

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

   380

   381

	rating = hs->remove_rating_decrease;

   382

	_cleared_town_rating += rating;

   383

	_cleared_town = t = GetTownByTile(tile);

   384

   385

	if (IsValidPlayer(_current_player)) {

   386

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

   387

			SetDParam(0, t->index);

   388

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   389

		}

   390

	}

   391

   392

	if (flags & DC_EXEC) {

   393

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   394

		ClearTownHouse(t, tile);

   395

	}

   396

   397

	return cost;

   398

}

   399

   400

static void GetAcceptedCargo_Town(TileIndex tile, AcceptedCargo ac)

   401

{

   402

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

   403

   404

	ac[CT_PASSENGERS] = hs->passenger_acceptance;

   405

	ac[CT_MAIL]       = hs->mail_acceptance;

   406

	ac[CT_GOODS]      = hs->goods_acceptance;

   407

	ac[CT_FOOD]       = hs->food_acceptance;

   408

}

   409

   410

static void GetTileDesc_Town(TileIndex tile, TileDesc *td)

   411

{

   412

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

   413

	if (!IsHouseCompleted(tile)) {

   414

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

   415

		td->str = STR_2058_UNDER_CONSTRUCTION;

   416

	}

   417

   418

	td->owner = OWNER_TOWN;

   419

}

   420

   421

static uint32 GetTileTrackStatus_Town(TileIndex tile, TransportType mode)

   422

{

   423

	/* not used */

   424

	return 0;

   425

}

   426

   427

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

   428

{

   429

	/* not used */

   430

}

   431

   432

   433

static const TileIndexDiffC _roadblock_tileadd[] = {

   434

	{ 0, -1},

   435

	{ 1,  0},

   436

	{ 0,  1},

   437

	{-1,  0},

   438

   439

	// Store the first 3 elements again.

   440

	// Lets us rotate without using &3.

   441

	{ 0, -1},

   442

	{ 1,  0},

   443

	{ 0,  1}

   444

};

   445

   446

   447

static bool GrowTown(Town *t);

   448

   449

static void TownTickHandler(Town *t)

   450

{

   451

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

   452

		int i = t->grow_counter - 1;

   453

		if (i < 0) {

   454

			if (GrowTown(t)) {

   455

				i = t->growth_rate;

   456

			} else {

   457

				i = 0;

   458

			}

   459

		}

   460

		t->grow_counter = i;

   461

	}

   462

   463

	UpdateTownRadius(t);

   464

}

   465

   466

void OnTick_Town()

   467

{

   468

	if (_game_mode == GM_EDITOR) return;

   469

   470

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

   471

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

   472

	for (_cur_town_iter += GetMaxTownIndex() + 1;

   473

	     _cur_town_iter >= TOWN_GROWTH_FREQUENCY;

   474

	     _cur_town_iter -= TOWN_GROWTH_FREQUENCY) {

   475

		uint32 i = _cur_town_ctr;

   476

   477

		if (++_cur_town_ctr > GetMaxTownIndex())

   478

			_cur_town_ctr = 0;

   479

   480

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

   481

	}

   482

}

   483

   484

static RoadBits GetTownRoadMask(TileIndex tile)

   485

{

   486

	TrackBits b = GetAnyRoadTrackBits(tile);

   487

	RoadBits r = ROAD_NONE;

   488

   489

	if (b & TRACK_BIT_X)     r |= ROAD_X;

   490

	if (b & TRACK_BIT_Y)     r |= ROAD_Y;

   491

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

   492

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