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/* $Id$ */

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/** @file town_cmd.cpp */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "debug.h"

     9

#include "strings.h"

    10

#include "road_map.h"

    11

#include "table/strings.h"

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#include "table/sprites.h"

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#include "map.h"

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#include "landscape.h"

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#include "tile.h"

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#include "town_map.h"

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#include "tunnel_map.h"

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#include "viewport.h"

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#include "town.h"

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#include "command.h"

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#include "gfx.h"

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#include "industry.h"

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#include "station.h"

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#include "vehicle.h"

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#include "player.h"

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#include "news.h"

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#include "saveload.h"

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#include "economy.h"

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#include "gui.h"

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#include "unmovable_map.h"

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#include "water_map.h"

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#include "variables.h"

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#include "bridge.h"

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#include "bridge_map.h"

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#include "date.h"

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#include "table/town_land.h"

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#include "genworld.h"

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#include "newgrf.h"

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#include "newgrf_callbacks.h"

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#include "newgrf_house.h"

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#include "newgrf_commons.h"

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#include "newgrf_townname.h"

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#include "misc/autoptr.hpp"

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    45

/* Initialize the town-pool */

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DEFINE_OLD_POOL_GENERIC(Town, Town)

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    48

Town::Town(TileIndex tile)

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{

    50

	if (tile != 0) _total_towns++;

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	this->xy = tile;

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}

    53

    54

Town::~Town()

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{

    56

	DeleteName(this->townnametype);

    57

    58

	if (CleaningPool()) return;

    59

    60

	Industry *i;

    61

    62

	/* Delete town authority window

    63

	 * and remove from list of sorted towns */

    64

	DeleteWindowById(WC_TOWN_VIEW, this->index);

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	_town_sort_dirty = true;

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	_total_towns--;

    67

    68

	/* Delete all industries belonging to the town */

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	FOR_ALL_INDUSTRIES(i) if (i->town == this) delete i;

    70

    71

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

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

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		switch (GetTileType(tile)) {

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			case MP_HOUSE:

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

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				break;

    77

    78

			case MP_ROAD:

    79

			case MP_TUNNELBRIDGE:

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				if (IsTileOwner(tile, OWNER_TOWN) &&

    81

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

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

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				break;

    84

    85

			default:

    86

				break;

    87

		}

    88

	}

    89

    90

	DeleteSubsidyWithTown(this->index);

    91

    92

	MarkWholeScreenDirty();

    93

    94

	this->xy = 0;

    95

}

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    97

// Local

    98

static int _grow_town_result;

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   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

/**

   147

 * House Tile drawing handler.

   148

 * Part of the tile loop process

   149

 * @param ti TileInfo of the tile to draw

   150

 */

   151

static void DrawTile_Town(TileInfo *ti)

   152

{

   153

	const DrawBuildingsTileStruct *dcts;

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	SpriteID image;

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	SpriteID pal;

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	HouseID house_id = GetHouseType(ti->tile);

   157

   158

	if (house_id >= NEW_HOUSE_OFFSET) {

   159

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

   160

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

   161

		 * house id is drawn instead. */

   162

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

   163

			DrawNewHouseTile(ti, house_id);

   164

			return;

   165

		} else {

   166

			house_id = GetHouseSpecs(house_id)->substitute_id;

   167

		}

   168

	}

   169

   170

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

   171

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

   172

   173

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

   174

   175

	image = dcts->ground.sprite;

   176

	pal   = dcts->ground.pal;

   177

	DrawGroundSprite(image, pal);

   178

   179

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

   180

	image = dcts->building.sprite;

   181

	if (image != 0) {

   182

		AddSortableSpriteToDraw(image, dcts->building.pal,

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			ti->x + dcts->subtile_x,

   184

			ti->y + dcts->subtile_y,

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			dcts->width + 1,

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			dcts->height + 1,

   187

			dcts->dz,

   188

			ti->z,

   189

			HASBIT(_transparent_opt, TO_HOUSES)

   190

		);

   191

   192

		if (HASBIT(_transparent_opt, TO_HOUSES)) return;

   193

	}

   194

   195

	{

   196

		int proc = dcts->draw_proc - 1;

   197

   198

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

   199

	}

   200

}

   201

   202

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

   203

{

   204

	return GetTileMaxZ(tile);

   205

}

   206

   207

static Foundation GetFoundation_Town(TileIndex tile, Slope tileh)

   208

{

   209

	return FlatteningFoundation(tileh);

   210

}

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   212

/**

   213

 * Animate a tile for a town

   214

 * Only certain houses can be animated

   215

 * The newhouses animation superseeds regular ones

   216

 * @param tile TileIndex of the house to animate

   217

 */

   218

static void AnimateTile_Town(TileIndex tile)

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{

   220

	int pos, dest;

   221

   222

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

   223

		AnimateNewHouseTile(tile);

   224

		return;

   225

	}

   226

   227

	if (_tick_counter & 3) return;

   228

   229

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

   230

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

   231

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

   232

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

   233

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

   234

		DeleteAnimatedTile(tile);

   235

		return;

   236

	}

   237

   238

	if (!LiftHasDestination(tile)) {

   239

		int i;

   240

   241

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

   242

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

   243

		 *  the height of 2 'normal' floors.

   244

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

   245

		do {

   246

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

   247

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

   248

   249

		SetLiftDestination(tile, i);

   250

	}

   251

   252

	pos = GetLiftPosition(tile);

   253

	dest = GetLiftDestination(tile) * 6;

   254

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

   255

	SetLiftPosition(tile, pos);

   256

   257

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

   258

   259

	MarkTileDirtyByTile(tile);

   260

}

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   262

static void UpdateTownRadius(Town *t);

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   264

/**

   265

 * Determines if a town is close to a tile

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 * @param tile TileIndex of the tile to query

   267

 * @param dist maximum distance to be accepted

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 * @returns true if the tile correspond to the distance criteria

   269

 */

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static bool IsCloseToTown(TileIndex tile, uint dist)

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{

   272

	const Town* t;

   273

   274

	FOR_ALL_TOWNS(t) {

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

   276

	}

   277

	return false;

   278

}

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   280

/**

   281

 * Marks the town sign as needing a repaint.

   282

 *

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 * This function marks the area of the sign of a town as dirty for repaint.

   284

 *

   285

 * @param t Town requesting town sign for repaint

   286

 * @ingroup dirty

   287

 */

   288

static void MarkTownSignDirty(Town *t)

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{

   290

	MarkAllViewportsDirty(

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		t->sign.left - 6,

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		t->sign.top - 3,

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

   294

		t->sign.top + 45

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	);

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}

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/**

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 * Resize the sign(label) of the town after changes in

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 * population (creation or growth or else)

   301

 * @param t Town to update

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 */

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void UpdateTownVirtCoord(Town *t)

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{

   305

	Point pt;

   306

   307

	MarkTownSignDirty(t);

   308

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

   309

	SetDParam(0, t->index);

   310

	SetDParam(1, t->population);

   311

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

   312

		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

   313

	MarkTownSignDirty(t);

   314

}

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   316

/**

   317

 * Change the towns population

   318

 * @param t Town which polulation has changed

   319

 * @param mod polulation change (can be positive or negative)

   320

 */

   321

static void ChangePopulation(Town *t, int mod)

   322

{

   323

	t->population += mod;

   324

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   325

	UpdateTownVirtCoord(t);

   326

   327

	if (_town_sort_order & 2) _town_sort_dirty = true;

   328

}

   329

   330

/**

   331

 * Determines the world population

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 * Basically, count population of all towns, one by one

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 * @return uint32 the calculated population of the world

   334

 */

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uint32 GetWorldPopulation()

   336

{

   337

	uint32 pop;

   338

	const Town* t;

   339

   340

	pop = 0;

   341

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

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	return pop;

   343

}

   344

   345

/**

   346

 * Helper function for house completion stages progression

   347

 * @param tile TileIndex of the house (or parts of it) to "grow"

   348

 */

   349

static void MakeSingleHouseBigger(TileIndex tile)

   350

{

   351

	assert(IsTileType(tile, MP_HOUSE));

   352

   353

	/* means it is completed, get out. */

   354

	if (LiftHasDestination(tile)) return;

   355

   356

	/* progress in construction stages */

   357

	IncHouseConstructionTick(tile);

   358

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

   359

   360

	/* Check and/or  */

   361

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

   362

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

   363

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

   364

	}

   365

   366

	if (IsHouseCompleted(tile)) {

   367

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

   368

		 * building to the town. */

   369

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

   370

	}

   371

	MarkTileDirtyByTile(tile);

   372

}

   373

   374

/** Make the house advances in its construction stages until completion

   375

 * @param tile TileIndex of house

   376

 */

   377

static void MakeTownHouseBigger(TileIndex tile)

   378

{

   379

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

   380

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

   381

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

   382

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

   383

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

   384

}

   385

   386

/**

   387

 * Periodic tic handler for houses and town

   388

 * @param tile been asked to do its stuff

   389

 */

   390

static void TileLoop_Town(TileIndex tile)

   391

{

   392

	Town *t;

   393

	uint32 r;

   394

	HouseID house_id = GetHouseType(tile);

   395

	HouseSpec *hs = GetHouseSpecs(house_id);

   396

   397

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

   398

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

   399

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

   400

   401

	if (!IsHouseCompleted(tile)) {

   402

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

   403

		MakeTownHouseBigger(tile);

   404

		return;

   405

	}

   406

   407

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

   408

	if ((hs->building_flags & BUILDING_IS_ANIMATED) &&

   409

			house_id < NEW_HOUSE_OFFSET &&

   410

			!LiftHasDestination(tile) &&

   411

			CHANCE16(1, 2))

   412

		AddAnimatedTile(tile);

   413

   414

	t = GetTownByTile(tile);

   415

   416

	r = Random();

   417

   418

	if (HASBIT(hs->callback_mask, CBM_HOUSE_PRODUCE_CARGO)) {

   419

		for (uint i = 0; i < 256; i++) {

   420

			uint16 callback = GetHouseCallback(CBID_HOUSE_PRODUCE_CARGO, i, r, house_id, t, tile);

   421

   422

			if (callback == CALLBACK_FAILED) break;

   423

			if (callback == 0x20FF) break;

   424

   425

			CargoID cargo = GetCargoTranslation(GB(callback, 8, 7), hs->grffile);

   426

			if (cargo == CT_INVALID) continue;

   427

   428

			uint amt = GB(callback, 0, 8);

   429

			uint moved = MoveGoodsToStation(tile, 1, 1, cargo, amt);

   430

   431

			const CargoSpec *cs = GetCargo(cargo);

   432

			switch (cs->town_effect) {

   433

				case TE_PASSENGERS:

   434

					t->new_max_pass += amt;

   435

					t->new_act_pass += moved;

   436

					break;

   437

   438

				case TE_MAIL:

   439

					t->new_max_mail += amt;

   440

					t->new_act_mail += moved;

   441

					break;

   442

   443

				default:

   444

					break;

   445

			}

   446

		}

   447

	} else {

   448

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

   449

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

   450

			uint moved;

   451

   452

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

   453

			t->new_max_pass += amt;

   454

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

   455

			t->new_act_pass += moved;

   456

		}

   457

   458

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

   459

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

   460

			uint moved;

   461

   462

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

   463

			t->new_max_mail += amt;

   464

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

   465

			t->new_act_mail += moved;

   466

		}

   467

	}

   468

   469

	_current_player = OWNER_TOWN;

   470

   471

	if (hs->building_flags & BUILDING_HAS_1_TILE &&

   472

			HASBIT(t->flags12, TOWN_IS_FUNDED) &&

   473

			CanDeleteHouse(tile) &&

   474

			max(_cur_year - GetHouseConstructionYear(tile), 0) >= hs->minimum_life &&

   475

			--t->time_until_rebuild == 0) {

   476

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

   477

   478

		ClearTownHouse(t, tile);

   479

   480

		/* Rebuild with another house? */

   481

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

   482

	}

   483

   484

	_current_player = OWNER_NONE;

   485

}

   486

   487

/**

   488

 * Unused handler

   489

 * @param tile unused