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(GET_TILE_X(t->xy)*16, GET_TILE_Y(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

static void MakeSingleHouseBigger(uint tile)

   207

{

   208

	byte b;

   209

   210

	assert(IS_TILETYPE(tile, MP_HOUSE));

   211

   212

	b = _map5[tile];

   213

	if (b & 0x80)

   214

		return;

   215

   216

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

   217

   218

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

   219

		return;

   220

   221

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

   222

   223

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

   224

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

   225

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

   226

	}

   227

	MarkTileDirtyByTile(tile);

   228

}

   229

   230

static void MakeTownHouseBigger(uint tile)

   231

{

   232

	uint flags = _house_more_flags[_map2[tile]];

   233

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

   234

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

   235

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

   236

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

   237

}

   238

   239

static void TileLoop_Town(uint tile)

   240

{

   241

	int house;

   242

	Town *t;

   243

	uint32 r;

   244

   245

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

   246

		MakeTownHouseBigger(tile);

   247

		return;

   248

	}

   249

   250

	house = _map2[tile];

   251

	if (_housetype_extra_flags[house] & 0x20 &&

   252

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

   253

			CHANCE16(1,2) &&

   254

			AddAnimatedTile(tile)) {

   255

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

   256

	}

   257

   258

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

   259

   260

	r = Random();

   261

   262

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

   263

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

   264

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

   265

		t->new_max_pass += amt;

   266

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

   267

		t->new_act_pass += moved;

   268

	}

   269

   270

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

   271

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

   272

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

   273

		t->new_max_mail += amt;

   274

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

   275

		t->new_act_mail += moved;

   276

	}

   277

   278

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

   279

		r>>=16;

   280

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

   281

   282

		_current_player = OWNER_TOWN;

   283

   284

		ClearTownHouse(t, tile);

   285

   286

		// rebuild with another house?

   287

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

   288

			DoBuildTownHouse(t, tile);

   289

		}

   290

   291

		_current_player = OWNER_NONE;

   292

	}

   293

}

   294

   295

static void ClickTile_Town(uint tile)

   296

{

   297

	/* not used */

   298

}

   299

   300

static int32 ClearTile_Town(uint tile, byte flags)

   301

{

   302

	int house, rating;

   303

	int32 cost;

   304

	Town *t;

   305

   306

	// safety checks

   307

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   308

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

   309

   310

	house = _map2[tile];

   311

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

   312

   313

	rating = _housetype_remove_ratingmod[house];

   314

	_cleared_town_rating += rating;

   315

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

   316

   317

	if (_current_player < MAX_PLAYERS) {

   318

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

   319

			SetDParam(0, t->index);

   320

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   321

		}

   322

	}

   323

   324

	if (flags & DC_EXEC) {

   325

		ChangeTownRating(t, -rating, -1000);

   326

		ClearTownHouse(t, tile);

   327

	}

   328

   329

	return cost;

   330

}

   331

   332

static void GetAcceptedCargo_Town(uint tile, AcceptedCargo ac)

   333

{

   334

	int type = _map2[tile];

   335

   336

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   337

	ac[CT_MAIL] = _housetype_cargo_mail[type];

   338

	ac[CT_GOODS] = _housetype_cargo_goods[type];

   339

	ac[CT_FOOD] = _housetype_cargo_food[type];

   340

}

   341

   342

static void GetTileDesc_Town(uint tile, TileDesc *td)

   343

{

   344

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

   345

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

   346

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

   347

		td->str = STR_2058_UNDER_CONSTRUCTION;

   348

	}

   349

   350

	td->owner = OWNER_TOWN;

   351

}

   352

   353

static uint32 GetTileTrackStatus_Town(uint tile, TransportType mode)

   354

{

   355

	/* not used */

   356

	return 0;

   357

}

   358

   359

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

   360

{

   361

	/* not used */

   362

}

   363

   364

   365

static const TileIndexDiffC _roadblock_tileadd[] = {

   366

	{ 0, -1},

   367

	{ 1,  0},

   368

	{ 0,  1},

   369

	{-1,  0},

   370

   371

	// Store the first 3 elements again.

   372

	// Lets us rotate without using &3.

   373

	{ 0, -1},

   374

	{ 1,  0},

   375

	{ 0,  1}

   376

};

   377

   378

static void TownTickHandler(Town *t)

   379

{

   380

	if (t->flags12&1) {

   381

		int i = t->grow_counter - 1;

   382

		if (i < 0) {

   383

			if (GrowTown(t)) {

   384

				i = t->growth_rate;

   385

			} else {

   386

				i = 0;

   387

			}

   388

		}

   389

		t->grow_counter = i;

   390

	}

   391

   392

	UpdateTownRadius(t);

   393

}

   394

   395

void OnTick_Town()

   396

{

   397

	uint i;

   398

	Town *t;

   399

   400

	if (_game_mode == GM_EDITOR)

   401

		return;

   402

   403

	i = _cur_town_ctr;

   406

	_cur_town_ctr = i;

   407

   408

	if (t->xy != 0)

   409

		TownTickHandler(t);

   410

   411

}

   412

   413

static byte GetTownRoadMask(TileIndex tile)

   414

{

   415

	byte b = GetRoadBitsByTile(tile);

   416

	byte r=0;

   417

	if (b&1) r|=10;

   418

	if (b&2) r|=5;

   419

	if (b&4) r|=9;

   420

	if (b&8) r|=6;

   421

	if (b&16) r|=3;

   422

	if (b&32) r|=12;

   423

	return r;

   424

}

   425

   426

static bool IsRoadAllowedHere(uint tile, int dir)

   427

{

   428

	uint k;

   429

	uint slope;

   430

   431

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

   432

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

   433

	TILE_ASSERT(tile);

   434

   435

	for(;;) {

   436

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

   437

		if (GetRoadBitsByTile(tile) == 0) {

   438

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

   439

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

   440

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

   441

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

   442

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

   443

				return false;

   444

		}

   445

   446

		slope = GetTileSlope(tile, NULL);

   447

		if (slope == 0) {

   448

no_slope:

   449

			// Tile has no slope

   450

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

   451

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

   452

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

   453

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

   454

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

   455

				return false;

   456

   457

			// Otherwise allow

   458

			return true;

   459

		}

   460

   461

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

   462

		// maybe terraform some.

   463

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

   464

			uint32 r = Random();

   465

   466

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

   467

				int32 res;

   468

   469

				if (CHANCE16I(1,16,r))

   470

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

   471

					                      CMD_TERRAFORM_LAND);

   472

				else

   473

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

   474

					                      CMD_TERRAFORM_LAND);

   475

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

   476

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

   477

					goto no_slope;

   478

			}

   479

			return false;

   480

		}

   481

   482

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

   483

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

   484

		return true;

   485

	}

   486

}

   487

   488

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

   489

{

   490

	int32 r;

   491

   492

	TILE_ASSERT(tile);

   493

   494

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

   495

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

   496

		return false;

   497

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

   498

	return true;

   499

}

   500

   501

static void LevelTownLand(uint tile)

   502

{

   503

	TileInfo ti;

   504

   505

	TILE_ASSERT(tile);

   506

   507

	// Don't terraform if land is plain or if there's a house there.

   508

	FindLandscapeHeightByTile(&ti, tile);

   509

	if (ti.tileh == 0 || ti.type == MP_HOUSE)

   510

		return;

   511

   512

	// First try up, then down

   513

	if (!TerraformTownTile(tile, ~ti.tileh & 0xF, 1)) {

   514

		TerraformTownTile(tile, ti.tileh & 0xF, 0);

   515