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

   175

static void ChangePopulation(Town *t, int mod)

   176

{

   177

	t->population += mod;

   178

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   179

   180

	if (_town_sort_order & 2) _town_sort_dirty = true;

   181

}

   182

   183

static void MakeSingleHouseBigger(uint tile)

   184

{

   185

	byte b;

   186

   187

	assert(IS_TILETYPE(tile, MP_HOUSE));

   188

   189

	b = _map5[tile];

   190

	if (b & 0x80)

   191

		return;

   192

   193

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

   194

   195

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

   196

		return;

   197

   198

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

   199

   200

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

   201

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

   202

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

   203

	}

   204

	MarkTileDirtyByTile(tile);

   205

}

   206

   207

static void MakeTownHouseBigger(uint tile)

   208

{

   209

	uint flags = _house_more_flags[_map2[tile]];

   210

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

   211

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

   212

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

   213

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

   214

}

   215

   216

static void TileLoop_Town(uint tile)

   217

{

   218

	int house;

   219

	Town *t;

   220

	uint32 r;

   221

   222

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

   223

		MakeTownHouseBigger(tile);

   224

		return;

   225

	}

   226

   227

	house = _map2[tile];

   228

	if (_housetype_extra_flags[house] & 0x20 &&

   229

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

   230

			CHANCE16(1,2) &&

   231

			AddAnimatedTile(tile)) {

   232

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

   233

	}

   234

   235

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

   236

   237

	r = Random();

   238

   239

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

   240

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

   241

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

   242

		t->new_max_pass += amt;

   243

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

   244

		t->new_act_pass += moved;

   245

	}

   246

   247

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

   248

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

   249

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

   250

		t->new_max_mail += amt;

   251

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

   252

		t->new_act_mail += moved;

   253

	}

   254

   255

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

   256

		r>>=16;

   257

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

   258

   259

		_current_player = OWNER_TOWN;

   260

   261

		ClearTownHouse(t, tile);

   262

   263

		// rebuild with another house?

   264

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

   265

			DoBuildTownHouse(t, tile);

   266

		}

   267

   268

		_current_player = OWNER_NONE;

   269

	}

   270

}

   271

   272

static void ClickTile_Town(uint tile)

   273

{

   274

	/* not used */

   275

}

   276

   277

static int32 ClearTile_Town(uint tile, byte flags)

   278

{

   279

	int house, rating;

   280

	int32 cost;

   281

	Town *t;

   282

   283

	// safety checks

   284

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   285

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

   286

   287

	house = _map2[tile];

   288

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

   289

   290

	rating = _housetype_remove_ratingmod[house];

   291

	_cleared_town_rating += rating;

   292

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

   293

   294

	if (_current_player < MAX_PLAYERS) {

   295

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

   296

			SetDParam(0, t->index);

   297

			return_cmd_error(STR_2009_LOCAL_AUTHORITY_REFUSES);

   298

		}

   299

	}

   300

   301

	if (flags & DC_EXEC) {

   302

		ChangeTownRating(t, -rating, -1000);

   303

		ClearTownHouse(t, tile);

   304

	}

   305

   306

	return cost;

   307

}

   308

   309

static void GetAcceptedCargo_Town(uint tile, AcceptedCargo ac)

   310

{

   311

	int type = _map2[tile];

   312

   313

	ac[CT_PASSENGERS] = _housetype_cargo_passengers[type];

   314

	ac[CT_MAIL] = _housetype_cargo_mail[type];

   315

	ac[CT_GOODS] = _housetype_cargo_goods[type];

   316

	ac[CT_FOOD] = _housetype_cargo_food[type];

   317

}

   318

   319

static void GetTileDesc_Town(uint tile, TileDesc *td)

   320

{

   321

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

   322

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

   323

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

   324

		td->str = STR_2058_UNDER_CONSTRUCTION;

   325

	}

   326

   327

	td->owner = OWNER_TOWN;

   328

}

   329

   330

static uint32 GetTileTrackStatus_Town(uint tile, TransportType mode)

   331

{

   332

	/* not used */

   333

	return 0;

   334

}

   335

   336

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

   337

{

   338

	/* not used */

   339

}

   340

   341

   342

static const TileIndexDiff _roadblock_tileadd[4+3] = {

   343

	TILE_XY(0,-1),

   344

	TILE_XY(1,0),

   345

	TILE_XY(0,1),

   346

	TILE_XY(-1,0),

   347

   348

	// Store the first 3 elements again.

   349

	// Lets us rotate without using &3.

   350

	TILE_XY(0,-1),

   351

	TILE_XY(1,0),

   352

	TILE_XY(0,1),

   353

};

   354

   355

static void TownTickHandler(Town *t)

   356

{

   357

	if (t->flags12&1) {

   358

		int i = t->grow_counter - 1;

   359

		if (i < 0) {

   360

			if (GrowTown(t)) {

   361

				i = t->growth_rate;

   362

			} else {

   363

				i = 0;

   364

			}

   365

		}

   366

		t->grow_counter = i;

   367

	}

   368

   369

	UpdateTownRadius(t);

   370

}

   371

   372

void OnTick_Town()

   373

{

   374

	uint i;

   375

	Town *t;

   376

   377

	if (_game_mode == GM_EDITOR)

   378

		return;

   379

   380

	i = _cur_town_ctr;

   381

	t = DEREF_TOWN(i);

   382

	if (++i == lengthof(_towns)) i = 0;

   383

	_cur_town_ctr = i;

   384

   385

	if (t->xy != 0)

   386

		TownTickHandler(t);

   387

   388

}

   389

   390

static byte GetTownRoadMask(TileIndex tile)

   391

{

   392

	byte b = GetRoadBitsByTile(tile);

   393

	byte r=0;

   394

	if (b&1) r|=10;

   395

	if (b&2) r|=5;

   396

	if (b&4) r|=9;

   397

	if (b&8) r|=6;

   398

	if (b&16) r|=3;

   399

	if (b&32) r|=12;

   400

	return r;

   401

}

   402

   403

static bool IsRoadAllowedHere(uint tile, int dir)

   404

{

   405

	uint k;

   406

	uint slope;

   407

   408

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

   409

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

   410

	TILE_ASSERT(tile);

   411

   412

	for(;;) {

   413

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

   414

		if (GetRoadBitsByTile(tile) == 0) {

   415

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

   416

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

   417

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

   418

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

   419

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

   420

				return false;

   421

		}

   422

   423

		slope = GetTileSlope(tile, NULL);

   424

		if (slope == 0) {

   425

no_slope:

   426

			// Tile has no slope

   427

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

   428

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

   429

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

   430

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

   431

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

   432

				return false;

   433

   434

			// Otherwise allow

   435

			return true;

   436

		}

   437

   438

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

   439

		// maybe terraform some.

   440

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

   441

			uint32 r = Random();

   442

   443

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

   444

				int32 res;

   445

   446

				if (CHANCE16I(1,16,r))

   447

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

   448

					                      CMD_TERRAFORM_LAND);

   449

				else

   450

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

   451

					                      CMD_TERRAFORM_LAND);

   452

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

   453

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

   454

					goto no_slope;

   455

			}

   456

			return false;

   457

		}

   458

   459

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

   460

	}

   461

}

   462

   463

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

   464

{

   465

	int32 r;

   466

   467

	TILE_ASSERT(tile);

   468

   469

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

   470

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

   471

		return false;

   472

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

   473

	return true;

   474

}

   475

   476

static void LevelTownLand(uint tile)

   477

{

   478

	TileInfo ti;

   479

   480

	TILE_ASSERT(tile);

   481

   482

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

   483

	FindLandscapeHeightByTile(&ti, tile);

   484

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

   485

		return;

   486

   487

	// First try up, then down

   488

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

   489

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

   490

	}

   491

}

   492

   493

#define IS_WATER_TILE(t) (IS_TILETYPE((t), MP_WATER) && _map5[(t)] == 0)

   494

   495

static void GrowTownInTile(uint *tile_ptr, uint mask, int block, Town *t1)

   496

{

   497

	Town *t2;

   498

	uint16 r;

   499

	int a,b,rcmd;

   500

	uint tmptile;

   501

	TileInfo ti;

   502

	int i;

   503

	int j;

   504

	uint tile = *tile_ptr;

   505

   506

	TILE_ASSERT(tile);

   507

   508

	if (mask == 0) {

   509

		// Tile has no road. First reset the status counter

   510

		// to say that this is the last iteration.

   511

		_grow_town_result = 0;

   512

   513

		// Then check if the tile we are at belongs to the town,

   514

		// if not, bail out.

   515

		t2 = ClosestTownFromTile(tile, (uint)-1);

   516

		if (t2 != t1)

   517

			return;

   518

   519

		// Remove hills etc