1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "map.h"

     5

#include "tile.h"

     6

#include "viewport.h"

     7

#include "town.h"

     8

#include "command.h"

     9

#include "pathfind.h"

    10

#include "gfx.h"

    11

#include "industry.h"

    12

#include "station.h"

    13

#include "player.h"

    14

#include "news.h"

    15

#include "saveload.h"

    16

#include "economy.h"

    17

#include "gui.h"

    18

#include "network.h"

    19

    20

enum {

    21

	TOWN_HAS_CHURCH     = 0x02,

    22

	TOWN_HAS_STADIUM    = 0x04

    23

};

    24

    25

// Local

    26

static int _grow_town_result;

    27

    28

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

    29

static void ClearTownHouse(Town *t, uint tile);

    30

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

    31

    32

typedef struct DrawTownTileStruct {

    33

	uint32 sprite_1;

    34

	uint32 sprite_2;

    35

    36

	byte subtile_x:4;

    37

	byte subtile_y:4;

    38

	byte width:4;

    39

	byte height:4;

    40

	byte dz;

    41

	byte proc;

    42

} DrawTownTileStruct;

    43

    44

#include "table/town_land.h"

    45

    46

    47

static void TownDrawTileProc1(TileInfo *ti)

    48

{

    49

	AddChildSpriteScreen(0x5A3, 0xE, 0x3C - (_map_owner[ti->tile]&0x7F));

    50

}

    51

    52

typedef void TownDrawTileProc(TileInfo *ti);

    53

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

    54

	TownDrawTileProc1

    55

};

    56

    57

    58

static void DrawTile_Town(TileInfo *ti)

    59

{

    60

	const DrawTownTileStruct *dcts;

    61

	byte z;

    62

	uint32 image;

    63

    64

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

    65

	{

    66

		/* this "randomizes" on the (up to) 4 variants of a building */

    67

		byte gfx   = (byte)_map2[ti->tile];

    68

		byte stage = _map3_lo[ti->tile] >> 6;

    69

		uint variant;

    70

		variant  = ti->x >> 4;

    71

		variant ^= ti->x >> 6;

    72

		variant ^= ti->y >> 4;

    73

		variant -= ti->y >> 6;

    74

		variant &= 3;

    75

		dcts = &_town_draw_tile_data[gfx << 4 | variant << 2 | stage];

    76

	}

    77

    78

	z = ti->z;

    79

    80

	/* Add bricks below the house? */

    81

	if (ti->tileh) {

    82

		AddSortableSpriteToDraw(0x3DD + ti->tileh, ti->x, ti->y, 16, 16, 7, z);

    83

		AddChildSpriteScreen(dcts->sprite_1, 0x1F, 1);

    84

		z += 8;

    85

	} else {

    86

		/* Else draw regular ground */

    87

		DrawGroundSprite(dcts->sprite_1);

    88

	}

    89

    90

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

    91

	if ((image = dcts->sprite_2) != 0) {

    92

		if (_display_opt & DO_TRANS_BUILDINGS)

    93

			image = (image & 0x3FFF) | 0x3224000;

    94

    95

		AddSortableSpriteToDraw(image,

    96

			ti->x + dcts->subtile_x,

    97

			ti->y + dcts->subtile_y,

    98

			dcts->width + 1,

    99

			dcts->height + 1,

   100

			dcts->dz,

   101

			z);

   102

   103

		if (_display_opt & DO_TRANS_BUILDINGS)

   104

			return;

   105

	}

   106

   107

	{

   108

		int proc;

   109

		if ((proc=dcts->proc-1) >= 0 )

   110

			_town_draw_tile_procs[proc](ti);

   111

	}

   112

}

   113

   114

static uint GetSlopeZ_Town(TileInfo *ti)

   115

{

   116

	uint z = GetPartialZ(ti->x&0xF, ti->y&0xF, ti->tileh) + ti->z;

   117

	if (ti->tileh != 0) z = (z & ~7) + 4;

   118

	return (uint16) z;

   119

}

   120

   121

static uint GetSlopeTileh_Town(TileInfo *ti)

   122

{

   123

	return ti->tileh;

   124

}

   125

   126

static void AnimateTile_Town(uint tile)

   127

{

   128

	int old;

   129

	int i;

   130

	int a,b;

   131

   132

	if (_tick_counter & 3)

   133

		return;

   134

   135

	if (_map2[tile] != 4 && _map2[tile] != 5)

   136

		return;

   137

   138

	if (!((old=_map_owner[tile])&0x80)) {

   139

		_map_owner[tile] |= 0x80;

   140

   141

		do {

   142

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

   143

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

   144

   145

		_map5[tile] = (_map5[tile] & ~0x3F) | i;

   146

	}

   147

   148

	a = _map_owner[tile]&0x7F;

   149

	b = (_map5[tile]&0x3F) * 6;

   150

	a += (a < b) ? 1 : -1;

   151

	_map_owner[tile] = (_map_owner[tile]&0x80)|a;

   152

   153

	if (a == b) {

   154

		_map5[tile] &= 0x40;

   155

		_map_owner[tile] &= 0x7F;

   156

		DeleteAnimatedTile(tile);

   157

	}

   158

   159

	MarkTileDirtyByTile(tile);

   160

}

   161

   162

static void UpdateTownRadius(Town *t);

   163

   164

static bool IsCloseToTown(uint tile, uint dist)

   165

{

   166

	Town *t;

   167

   168

	FOR_ALL_TOWNS(t) {

   169

		if (t->xy != 0 && DistanceManhattan(tile, t->xy) < dist)

   170

			return true;

   171

	}

   172

	return false;

   173

}

   174

   175

static void MarkTownSignDirty(Town *t)

   176

{

   177

	MarkAllViewportsDirty(

   178

		t->sign.left-6,

   179

		t->sign.top-3,

   180

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

   181

		t->sign.top + 45

   182

	);

   183

}

   184

   185

void UpdateTownVirtCoord(Town *t)

   186

{

   187

	Point pt;

   188

   189

	MarkTownSignDirty(t);

   190

	pt = RemapCoords2(TileX(t->xy) * 16, TileY(t->xy) * 16);

   191

	SetDParam(0, t->townnametype);

   192

	SetDParam(1, t->townnameparts);

   193

	SetDParam(2, t->population);

   194

	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24, _patches.population_in_label ? STR_TOWN_LABEL_POP : STR_2001);

   195

	MarkTownSignDirty(t);

   196

}

   197

   198

static void ChangePopulation(Town *t, int mod)

   199

{

   200

	t->population += mod;

   201

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   202

	UpdateTownVirtCoord(t);

   203

   204

	if (_town_sort_order & 2) _town_sort_dirty = true;

   205

}

   206

   207

uint32 GetWorldPopulation(void)

   208

{

   209

	uint32 pop;

   210

	Town *t;

   211

	pop = 0;

   212

	FOR_ALL_TOWNS(t) {

   213

			pop += t->population;

   214

	}

   215

	return pop;

   216

}

   217

   218

static void MakeSingleHouseBigger(uint tile)

   219

{

   220

	byte b;

   221

   222

	assert(IsTileType(tile, MP_HOUSE));

   223

   224

	b = _map5[tile];

   225

	if (b & 0x80)

   226

		return;

   227

   228

	_map5[tile] = (b & 0xC0) | ((b+1)&7);

   229

   230

	if ((_map5[tile]&7) != 0)

   231

		return;

   232

   233

	_map3_lo[tile] = _map3_lo[tile] + 0x40;

   234

   235

	if ( (_map3_lo[tile] & 0xC0) == 0xC0) {

   236

		Town *t = ClosestTownFromTile(tile, (uint)-1);

   237

		ChangePopulation(t, _housetype_population[_map2[tile]]);

   238

	}

   239

	MarkTileDirtyByTile(tile);

   240

}

   241

   242

static void MakeTownHouseBigger(uint tile)

   243

{

   244

	uint flags = _house_more_flags[_map2[tile]];

   245

	if (flags & 8) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));

   246

	if (flags & 4) MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));

   247

	if (flags & 2) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));

   248

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

   249

}

   250

   251

static void TileLoop_Town(uint tile)

   252

{

   253

	int house;

   254

	Town *t;

   255

	uint32 r;

   256

   257

	if ((_map3_lo[tile] & 0xC0) != 0xC0) {

   258

		MakeTownHouseBigger(tile);

   259

		return;

   260

	}

   261

   262

	house = _map2[tile];

   263

	if (_housetype_extra_flags[house] & 0x20 &&

   264

			!(_map5[tile] & 0x80) &&

   265

			CHANCE16(1,2) &&

   266

			AddAnimatedTile(tile)) {

   267

		_map5[tile] = (_map5[tile] & 0x40)|0x80;

   268

	}

   269

   270

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

   271

   272

	r = Random();

   273

   274

	if ( (byte)r < _housetype_population[house] ) {

   275

		uint amt = ((byte)r >> 3) + 1, moved;

   276

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

   277

		t->new_max_pass += amt;

   278

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

   279

		t->new_act_pass += moved;

   280

	}

   281

   282

	if ( (byte)(r>>8) < _housetype_mailamount[house] ) {

   283

		uint amt = ((byte)(r>>8) >> 3) + 1, moved;

   284

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

   285

		t->new_max_mail += amt;

   286

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

   287

		t->new_act_mail += moved;

   288

	}

   289

   290

	if (_house_more_flags[house]&8 && (t->flags12&1) && --t->time_until_rebuild == 0) {

   291

		r>>=16;

   292

		t->time_until_rebuild = (r & 63) + 130;

   293

   294

		_current_player = OWNER_TOWN;

   295

   296

		ClearTownHouse(t, tile);

   297

   298

		// rebuild with another house?

   299

		if ( (byte) (r >> 8) >= 12) {

   300

			DoBuildTownHouse(t, tile);

   301

		}

   302

   303

		_current_player = OWNER_NONE;

   304

	}

   305

}

   306

   307

static void ClickTile_Town(uint tile)

   308

{

   309

	/* not used */

   310

}

   311

   312

static int32 ClearTile_Town(uint tile, byte flags)

   313

{

   314

	int house, rating;

   315

	int32 cost;

   316

	Town *t;

   317

   318

	// safety checks

   319

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   320

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

   321

   322

	house = _map2[tile];

   323

	cost = _price.remove_house * _housetype_remove_cost[house] >> 8;

   324

   325

	rating = _housetype_remove_ratingmod[house];

   326

	_cleared_town_rating += rating;

   327

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

   328

   329

	if (_current_player < MAX_PLAYERS) {

   330

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

   331

			SetDParam(0, t->index);

   332

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   333

		}

   334

	}

   335

   336

	if (flags & DC_EXEC) {

   337

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   338

		ClearTownHouse(t, tile);

   339

	}

   340

   341

	return cost;

   342

}

   343

   344

static void GetAcceptedCargo_Town(uint tile, AcceptedCargo ac)

   345

{

   346

	int type = _map2[tile];

   347

   348

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   349

	ac[CT_MAIL] = _housetype_cargo_mail[type];

   350

	ac[CT_GOODS] = _housetype_cargo_goods[type];

   351

	ac[CT_FOOD] = _housetype_cargo_food[type];

   352

}

   353

   354

static void GetTileDesc_Town(uint tile, TileDesc *td)

   355

{

   356

	td->str = _town_tile_names[_map2[tile]];

   357

	if ((_map3_lo[tile] & 0xC0) != 0xC0) {

   358

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

   359

		td->str = STR_2058_UNDER_CONSTRUCTION;

   360

	}

   361

   362

	td->owner = OWNER_TOWN;

   363

}

   364

   365

static uint32 GetTileTrackStatus_Town(uint tile, TransportType mode)

   366

{

   367

	/* not used */

   368

	return 0;

   369

}

   370

   371

static void ChangeTileOwner_Town(uint tile, byte old_player, byte new_player)

   372

{

   373

	/* not used */

   374

}

   375

   376

   377

static const TileIndexDiffC _roadblock_tileadd[] = {

   378

	{ 0, -1},

   379

	{ 1,  0},

   380

	{ 0,  1},

   381

	{-1,  0},

   382

   383

	// Store the first 3 elements again.

   384

	// Lets us rotate without using &3.

   385

	{ 0, -1},

   386

	{ 1,  0},

   387

	{ 0,  1}

   388

};

   389

   390

static void TownTickHandler(Town *t)

   391

{

   392

	if (t->flags12&1) {

   393

		int i = t->grow_counter - 1;

   394

		if (i < 0) {

   395

			if (GrowTown(t)) {

   396

				i = t->growth_rate;

   397

			} else {

   398

				i = 0;

   399

			}

   400

		}

   401

		t->grow_counter = i;

   402

	}

   403

   404

	UpdateTownRadius(t);

   405

}

   406

   407

void OnTick_Town(void)

   408

{

   409

	uint i;

   410

	Town *t;

   411

   412

	if (_game_mode == GM_EDITOR)

   413

		return;

   414

   415

	i = _cur_town_ctr;

   416

	t = GetTown(i);

   417

	if (++i == _towns_size) i = 0;

   418

	_cur_town_ctr = i;

   419

   420

	if (t->xy != 0)

   421

		TownTickHandler(t);

   422

   423

}

   424

   425

static byte GetTownRoadMask(TileIndex tile)

   426

{

   427

	byte b = GetRoadBitsByTile(tile);

   428

	byte r=0;

   429

	if (b&1) r|=10;

   430

	if (b&2) r|=5;

   431

	if (b&4) r|=9;

   432

	if (b&8) r|=6;

   433

	if (b&16) r|=3;

   434

	if (b&32) r|=12;

   435

	return r;

   436

}

   437

   438

static bool IsRoadAllowedHere(uint tile, int dir)

   439

{

   440

	uint k;

   441

	uint slope;

   442

   443

	// If this assertion fails, it might be because the world contains

   444

	//  land at the edges. This is not ok.

   445

	TILE_ASSERT(tile);

   446

   447

	for(;;) {

   448

		// Check if there already is a road at this point?

   449

		if (GetRoadBitsByTile(tile) == 0) {

   450

			// No, try to build one in the direction.

   451

			// if that fails clear the land, and if that fails exit.

   452

			// This is to make sure that we can build a road here later.

   453

			if (DoCommandByTile(tile, (dir&1)?0xA:0x5, 0, DC_AUTO, CMD_BUILD_ROAD) == CMD_ERROR &&

   454

					DoCommandByTile(tile, 0, 0, DC_AUTO, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)

   455

				return false;

   456

		}

   457

   458

		slope = GetTileSlope(tile, NULL);

   459

		if (slope == 0) {

   460

no_slope:

   461

			// Tile has no slope

   462

			// Disallow the road if any neighboring tile has a road.

   463

			if (HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]))), dir^2) ||

   464

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]))), dir^2) ||

   465

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+1]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir) ||

   466

					HASBIT(GetTownRoadMask(TILE_ADD(tile, ToTileIndexDiff(_roadblock_tileadd[dir+3]) + ToTileIndexDiff(_roadblock_tileadd[dir+2]))), dir))

   467

				return false;

   468

   469

			// Otherwise allow

   470

			return true;

   471

		}

   472

   473

		// If the tile is not a slope in the right direction, then

   474

		// maybe terraform some.

   475

		if ((k = (dir&1)?0xC:0x9) != slope && (k^0xF) != slope) {

   476

			uint32 r = Random();

   477

   478

			if (CHANCE16I(1,8, r) && !_generating_world) {

   479

				int32 res;

   480

   481

				if (CHANCE16I(1,16,r))

   482

					res = DoCommandByTile(tile, slope, 0, DC_EXEC | DC_AUTO | DC_NO_WATER,

   483

					                      CMD_TERRAFORM_LAND);

   484

				else

   485

					res = DoCommandByTile(tile, slope^0xF, 1, DC_EXEC | DC_AUTO | DC_NO_WATER,

   486

					                      CMD_TERRAFORM_LAND);

   487

				if (res == CMD_ERROR && CHANCE16I(1,3,r))

   488

					// We can consider building on the slope, though.

   489

					goto no_slope;

   490

			}

   491

			return false;

   492

		}

   493

   494

		/* Can somebody explain for what this is needed? :s */

   495

		// tile = TILE_ADD(tile, _roadblock_tileadd[dir]);

   496

		return true;

   497

	}

   498

}

   499

   500

static bool TerraformTownTile(uint tile, int edges, int dir)

   501

{

   502

	int32 r;

   503

   504

	TILE_ASSERT(tile);

   505

   506

	r = DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER, CMD_TERRAFORM_LAND);

   507

	if (r == CMD_ERROR || r >= 126*16)

   508

		return false;

   509

	DoCommandByTile(tile, edges, dir, DC_AUTO | DC_NO_WATER | DC_EXEC, CMD_TERRAFORM_LAND);

   510

	return true;

   511

}

   512

   513

static void LevelTownLand(uint tile)

   514

{