1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "map.h"

     5

#include "viewport.h"

     6

#include "town.h"

     7

#include "command.h"

     8

#include "pathfind.h"

     9

#include "gfx.h"

    10

#include "industry.h"

    11

#include "station.h"

    12

#include "player.h"

    13

#include "news.h"

    14

#include "saveload.h"

    15

#include "economy.h"

    16

#include "gui.h"

    17

#include "network.h"

    18

    19

enum {

    20

	TOWN_HAS_CHURCH     = 0x02,

    21

	TOWN_HAS_STADIUM    = 0x04

    22

};

    23

    24

// Local

    25

static int _grow_town_result;

    26

    27

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

    28

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

    29

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

    30

    31

typedef struct DrawTownTileStruct {

    32

	uint32 sprite_1;

    33

	uint32 sprite_2;

    34

    35

	byte subtile_x:4;

    36

	byte subtile_y:4;

    37

	byte width:4;

    38

	byte height:4;

    39

	byte dz;

    40

	byte proc;

    41

} DrawTownTileStruct;

    42

    43

#include "table/town_land.h"

    44

    45

    46

static void TownDrawTileProc1(TileInfo *ti)

    47

{

    48

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

    49

}

    50

    51

typedef void TownDrawTileProc(TileInfo *ti);

    52

static TownDrawTileProc * const _town_draw_tile_procs[1] = {

    53

	TownDrawTileProc1

    54

};

    55

    56

    57

static void DrawTile_Town(TileInfo *ti)

    58

{

    59

	const DrawTownTileStruct *dcts;

    60

	byte z;

    61

	uint32 image;

    62

    63

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

    64

	{

    65

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

    66

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

    67

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

    68

		uint variant;

    69

		variant  = ti->x >> 4;

    70

		variant ^= ti->x >> 6;

    71

		variant ^= ti->y >> 4;

    72

		variant -= ti->y >> 6;

    73

		variant &= 3;

    74

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

    75

	}

    76

    77

	z = ti->z;

    78

    79

	/* Add bricks below the house? */

    80

	if (ti->tileh) {

    81

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

    82

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

    83

		z += 8;

    84

	} else {

    85

		/* Else draw regular ground */

    86

		DrawGroundSprite(dcts->sprite_1);

    87

	}

    88

    89

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

    90

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

    91

		if (_display_opt & DO_TRANS_BUILDINGS)

    92

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

    93

    94

		AddSortableSpriteToDraw(image,

    95

			ti->x + dcts->subtile_x,

    96

			ti->y + dcts->subtile_y,

    97

			dcts->width + 1,

    98

			dcts->height + 1,

    99

			dcts->dz,

   100

			z);

   101

   102

		if (_display_opt & DO_TRANS_BUILDINGS)

   103

			return;

   104

	}

   105

   106

	{

   107

		int proc;

   108

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

   109

			_town_draw_tile_procs[proc](ti);

   110

	}

   111

}

   112

   113

static uint GetSlopeZ_Town(TileInfo *ti)

   114

{

   115

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

   116

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

   117

	return (uint16) z;

   118

}

   119

   120

static uint GetSlopeTileh_Town(TileInfo *ti)

   121

{

   122

	return ti->tileh;

   123

}

   124

   125

static void AnimateTile_Town(uint tile)

   126

{

   127

	int old;

   128

	int i;

   129

	int a,b;

   130

   131

	if (_tick_counter & 3)

   132

		return;

   133

   134

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

   135

		return;

   136

   137

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

   138

		_map_owner[tile] |= 0x80;

   139

   140

		do {

   141

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

   142

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

   143

   144

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

   145

	}

   146

   147

	a = _map_owner[tile]&0x7F;

   148

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

   149

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

   150

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

   151

   152

	if (a == b) {

   153

		_map5[tile] &= 0x40;

   154

		_map_owner[tile] &= 0x7F;

   155

		DeleteAnimatedTile(tile);

   156

	}

   157

   158

	MarkTileDirtyByTile(tile);

   159

}

   160

   161

static void UpdateTownRadius(Town *t);

   162

   163

static bool IsCloseToTown(uint tile, uint dist)

   164

{

   165

	Town *t;

   166

   167

	FOR_ALL_TOWNS(t) {

   168

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

   169

			return true;

   170

	}

   171

	return false;

   172

}

   173

   174

static void MarkTownSignDirty(Town *t)

   175

{

   176

	MarkAllViewportsDirty(

   177

		t->sign.left-6,

   178

		t->sign.top-3,

   179

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

   180

		t->sign.top + 45

   181

	);

   182

}

   183

   184

void UpdateTownVirtCoord(Town *t)

   185

{

   186

	Point pt;

   187

   188

	MarkTownSignDirty(t);

   189

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

   190

	SetDParam(0, t->townnametype);

   191

	SetDParam(1, t->townnameparts);

   192

	SetDParam(2, t->population);

   193

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

   194

	MarkTownSignDirty(t);

   195

}

   196

   197

static void ChangePopulation(Town *t, int mod)

   198

{

   199

	t->population += mod;

   200

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   201

	UpdateTownVirtCoord(t);

   202

   203

	if (_town_sort_order & 2) _town_sort_dirty = true;

   204

}

   205

   206

uint32 GetWorldPopulation(void)

   207

{

   208

	uint32 pop;

   209

	Town *t;

   210

	pop = 0;

   211

	FOR_ALL_TOWNS(t) {

   212

			pop += t->population;

   213

	}

   214

	return pop;

   215

}

   216

   217

static void MakeSingleHouseBigger(uint tile)

   218

{

   219

	byte b;

   220

   221

	assert(IsTileType(tile, MP_HOUSE));

   222

   223

	b = _map5[tile];

   224

	if (b & 0x80)

   225

		return;

   226

   227

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

   228

   229

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

   230

		return;

   231

   232

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

   233

   234

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

   235

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

   236

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

   237

	}

   238

	MarkTileDirtyByTile(tile);

   239

}

   240

   241

static void MakeTownHouseBigger(uint tile)

   242

{

   243

	uint flags = _house_more_flags[_map2[tile]];

   244

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

   245

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

   246

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

   247

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

   248

}

   249

   250

static void TileLoop_Town(uint tile)

   251

{

   252

	int house;

   253

	Town *t;

   254

	uint32 r;

   255

   256

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

   257

		MakeTownHouseBigger(tile);

   258

		return;

   259

	}

   260

   261

	house = _map2[tile];

   262

	if (_housetype_extra_flags[house] & 0x20 &&

   263

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

   264

			CHANCE16(1,2) &&

   265

			AddAnimatedTile(tile)) {

   266

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

   267

	}

   268

   269

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

   270

   271

	r = Random();

   272

   273

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

   274

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

   275

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

   276

		t->new_max_pass += amt;

   277

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

   278

		t->new_act_pass += moved;

   279

	}

   280

   281

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

   282

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

   283

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

   284

		t->new_max_mail += amt;

   285

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

   286

		t->new_act_mail += moved;

   287

	}

   288

   289

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

   290

		r>>=16;

   291

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

   292

   293

		_current_player = OWNER_TOWN;

   294

   295

		ClearTownHouse(t, tile);

   296

   297

		// rebuild with another house?

   298

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

   299

			DoBuildTownHouse(t, tile);

   300

		}

   301

   302

		_current_player = OWNER_NONE;

   303

	}

   304

}

   305

   306

static void ClickTile_Town(uint tile)

   307

{

   308

	/* not used */

   309

}

   310

   311

static int32 ClearTile_Town(uint tile, byte flags)

   312

{

   313

	int house, rating;

   314

	int32 cost;

   315

	Town *t;

   316

   317

	// safety checks

   318

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   319

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

   320

   321

	house = _map2[tile];

   322

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

   323

   324

	rating = _housetype_remove_ratingmod[house];

   325

	_cleared_town_rating += rating;

   326

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

   327

   328

	if (_current_player < MAX_PLAYERS) {

   329

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

   330

			SetDParam(0, t->index);

   331

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   332

		}

   333

	}

   334

   335

	if (flags & DC_EXEC) {

   336

		ChangeTownRating(t, -rating, RATING_HOUSE_MINIMUM);

   337

		ClearTownHouse(t, tile);

   338

	}

   339

   340

	return cost;

   341

}

   342

   343

static void GetAcceptedCargo_Town(uint tile, AcceptedCargo ac)

   344

{

   345

	int type = _map2[tile];

   346

   347

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   348

	ac[CT_MAIL] = _housetype_cargo_mail[type];

   349

	ac[CT_GOODS] = _housetype_cargo_goods[type];

   350

	ac[CT_FOOD] = _housetype_cargo_food[type];

   351

}

   352

   353

static void GetTileDesc_Town(uint tile, TileDesc *td)

   354

{

   355

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

   356

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

   357

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

   358

		td->str = STR_2058_UNDER_CONSTRUCTION;

   359

	}

   360

   361

	td->owner = OWNER_TOWN;

   362

}

   363

   364

static uint32 GetTileTrackStatus_Town(uint tile, TransportType mode)

   365

{

   366

	/* not used */

   367

	return 0;

   368

}

   369

   370

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

   371

{

   372

	/* not used */

   373

}

   374

   375

   376

static const TileIndexDiffC _roadblock_tileadd[] = {

   377

	{ 0, -1},

   378

	{ 1,  0},

   379

	{ 0,  1},

   380

	{-1,  0},

   381

   382

	// Store the first 3 elements again.

   383

	// Lets us rotate without using &3.

   384

	{ 0, -1},

   385

	{ 1,  0},

   386

	{ 0,  1}

   387

};

   388

   389

static void TownTickHandler(Town *t)

   390

{

   391

	if (t->flags12&1) {

   392

		int i = t->grow_counter - 1;

   393

		if (i < 0) {

   394

			if (GrowTown(t)) {

   395

				i = t->growth_rate;

   396

			} else {

   397

				i = 0;

   398

			}

   399

		}

   400

		t->grow_counter = i;

   401

	}

   402

   403

	UpdateTownRadius(t);

   404

}

   405

   406

void OnTick_Town(void)

   407

{

   408

	uint i;

   409

	Town *t;

   410

   411

	if (_game_mode == GM_EDITOR)

   412

		return;

   413

   414

	i = _cur_town_ctr;

   415

	t = GetTown(i);

   416

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

   417

	_cur_town_ctr = i;

   418

   419

	if (t->xy != 0)

   420

		TownTickHandler(t);

   421

   422

}

   423

   424

static byte GetTownRoadMask(TileIndex tile)

   425

{

   426

	byte b = GetRoadBitsByTile(tile);

   427

	byte r=0;

   428

	if (b&1) r|=10;

   429

	if (b&2) r|=5;

   430

	if (b&4) r|=9;

   431

	if (b&8) r|=6;

   432

	if (b&16) r|=3;

   433

	if (b&32) r|=12;

   434

	return r;

   435

}

   436

   437

static bool IsRoadAllowedHere(uint tile, int dir)

   438

{

   439

	uint k;

   440

	uint slope;

   441

   442

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

   443

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

   444

	TILE_ASSERT(tile);

   445

   446

	for(;;) {

   447

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

   448

		if (GetRoadBitsByTile(tile) == 0) {

   449

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

   450

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

   451

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

   452

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

   453

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

   454

				return false;

   455

		}

   456

   457

		slope = GetTileSlope(tile, NULL);

   458

		if (slope == 0) {

   459

no_slope:

   460

			// Tile has no slope

   461

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

   462

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

   463

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

   464

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

   465

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

   466

				return false;

   467

   468

			// Otherwise allow

   469

			return true;

   470

		}

   471

   472

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

   473

		// maybe terraform some.

   474

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

   475

			uint32 r = Random();

   476

   477

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

   478

				int32 res;

   479

   480

				if (CHANCE16I(1,16,r))

   481

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

   482

					                      CMD_TERRAFORM_LAND);

   483

				else

   484

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

   485

					                      CMD_TERRAFORM_LAND);

   486

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

   487

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

   488

					goto no_slope;

   489

			}

   490

			return false;

   491

		}

   492

   493

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

   494

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

   495

		return true;

   496

	}

   497

}

   498

   499

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

   500

{

   501

	int32 r;

   502

   503

	TILE_ASSERT(tile);

   504

   505

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

   506

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

   507

		return false;

   508

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

   509

	return true;

   510

}

   511

   512

static void LevelTownLand(uint tile)

   513

{

   514

	TileInfo ti;