1

#include "stdafx.h"

     2

#include "openttd.h"

     3

#include "map.h"

     4

#include "spritecache.h"

     5

#include "table/sprites.h"

     6

#include "tile.h"

     7

#include <stdarg.h>

     8

#include "viewport.h"

     9

#include "command.h"

    10

#include "vehicle.h"

    11

    12

extern const TileTypeProcs

    13

	_tile_type_clear_procs,

    14

	_tile_type_rail_procs,

    15

	_tile_type_road_procs,

    16

	_tile_type_town_procs,

    17

	_tile_type_trees_procs,

    18

	_tile_type_station_procs,

    19

	_tile_type_water_procs,

    20

	_tile_type_dummy_procs,

    21

	_tile_type_industry_procs,

    22

	_tile_type_tunnelbridge_procs,

    23

	_tile_type_unmovable_procs;

    24

    25

const TileTypeProcs * const _tile_type_procs[16] = {

    26

	&_tile_type_clear_procs,

    27

	&_tile_type_rail_procs,

    28

	&_tile_type_road_procs,

    29

	&_tile_type_town_procs,

    30

	&_tile_type_trees_procs,

    31

	&_tile_type_station_procs,

    32

	&_tile_type_water_procs,

    33

	&_tile_type_dummy_procs,

    34

	&_tile_type_industry_procs,

    35

	&_tile_type_tunnelbridge_procs,

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	&_tile_type_unmovable_procs,

    37

};

    38

    39

/* landscape slope => sprite */

    40

const byte _tileh_to_sprite[32] = {

    41

	0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,0,

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	0,0,0,0,0,0,0,16,0,0,0,17,0,15,18,0,

    43

};

    44

    45

const byte _inclined_tileh[] = {

    46

	3, 9, 3, 6, 12, 6, 12, 9

    47

};

    48

    49

    50

void FindLandscapeHeightByTile(TileInfo *ti, TileIndex tile)

    51

{

    52

	assert(tile < MapSize());

    53

    54

	ti->tile = tile;

    55

	ti->map5 = _m[tile].m5;

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	ti->type = GetTileType(tile);

    57

	ti->tileh = GetTileSlope(tile, &ti->z);

    58

}

    59

    60

/* find the landscape height for the coordinates x y */

    61

void FindLandscapeHeight(TileInfo *ti, uint x, uint y)

    62

{

    63

	ti->x = x;

    64

	ti->y = y;

    65

    66

	if (x >= MapMaxX() * 16 - 1 || y >= MapMaxY() * 16 - 1) {

    67

		ti->tileh = 0;

    68

		ti->type = MP_VOID;

    69

		ti->tile = 0;

    70

		ti->map5 = 0;

    71

		ti->z = 0;

    72

		return;

    73

	}

    74

    75

	FindLandscapeHeightByTile(ti, TileVirtXY(x, y));

    76

}

    77

    78

uint GetPartialZ(int x, int y, int corners)

    79

{

    80

	int z = 0;

    81

    82

	switch(corners) {

    83

	case 1:

    84

		if (x - y >= 0)

    85

			z = (x - y) >> 1;

    86

		break;

    87

    88

	case 2:

    89

		y^=0xF;

    90

		if ( (x - y) >= 0)

    91

			z = (x - y) >> 1;

    92

		break;

    93

    94

	case 3:

    95

		z = (x>>1) + 1;

    96

		break;

    97

    98

	case 4:

    99

		if (y - x >= 0)

   100

			z = (y - x) >> 1;

   101

		break;

   102

   103

	case 5:

   104

	case 10:

   105

	case 15:

   106

		z = 4;

   107

		break;

   108

   109

	case 6:

   110

		z = (y>>1) + 1;

   111

		break;

   112

   113

	case 7:

   114

		z = 8;

   115

		y^=0xF;

   116

		if (x - y < 0)

   117

			z += (x - y) >> 1;

   118

		break;

   119

   120

	case 8:

   121

		y ^= 0xF;

   122

		if (y - x >= 0)

   123

			z = (y - x) >> 1;

   124

		break;

   125

   126

	case 9:

   127

		z = (y^0xF)>>1;

   128

		break;

   129

   130

	case 11:

   131

		z = 8;

   132

		if (x - y < 0)

   133

			z += (x - y) >> 1;

   134

		break;

   135

   136

	case 12:

   137

		z = (x^0xF)>>1;

   138

		break;

   139

   140

	case 13:

   141

		z = 8;

   142

		y ^= 0xF;

   143

		if (y - x < 0)

   144

			z += (y - x) >> 1;

   145

		break;

   146

   147

	case 14:

   148

		z = 8;

   149

		if (y - x < 0)

   150

			z += (y - x) >> 1;

   151

		break;

   152

   153

	case 23:

   154

		z = 1 + ((x+y)>>1);

   155

		break;

   156

   157

	case 27:

   158

		z = 1 + ((x+(y^0xF))>>1);

   159

		break;

   160

   161

	case 29:

   162

		z = 1 + (((x^0xF)+(y^0xF))>>1);

   163

		break;

   164

   165

	case 30:

   166

		z = 1 + (((x^0xF)+(y^0xF))>>1);

   167

		break;

   168

	}

   169

   170

	return z;

   171

}

   172

   173

uint GetSlopeZ(int x,  int y)

   174

{

   175

	TileInfo ti;

   176

   177

	FindLandscapeHeight(&ti, x, y);

   178

   179

	return _tile_type_procs[ti.type]->get_slope_z_proc(&ti);

   180

}

   181

   182

// direction=true:  check for foundation in east and south corner

   183

// direction=false: check for foundation in west and south corner

   184

static bool hasFoundation(TileInfo *ti, bool direction)

   185

{

   186

	bool south, other; // southern corner and east/west corner

   187

	uint slope = _tile_type_procs[ti->type]->get_slope_tileh_proc(ti);

   188

	uint tileh = ti->tileh;

   189

   190

	if(slope==0 && slope!=tileh) tileh=15;

   191

	south = (tileh & 2) != (slope & 2);

   192

   193

	if(direction)

   194

		other = (tileh & 4) != (slope & 4);

   195

	else

   196

		other = (tileh & 1) != (slope & 1);

   197

	return south || other;

   198

   199

}

   200

   201

void DrawFoundation(TileInfo *ti, uint f)

   202

{

   203

	uint32 sprite_base = SPR_SLOPES_BASE-14;

   204

   205

	TileInfo ti2;

   206

	FindLandscapeHeight(&ti2, ti->x, ti->y-1);

   207

	if(hasFoundation( &ti2, true )) sprite_base += 22;		// foundation in NW direction

   208

	FindLandscapeHeight(&ti2, ti->x-1, ti->y);

   209

	if(hasFoundation( &ti2, false )) sprite_base += 22*2;	// foundation in NE direction

   210

   211

	if (f < 15) {

   212

		// leveled foundation

   213

		if( sprite_base < SPR_SLOPES_BASE ) sprite_base = 990; // use original slope sprites

   214

   215

		AddSortableSpriteToDraw(f-1 + sprite_base, ti->x, ti->y, 16, 16, 7, ti->z);

   216

		ti->z += 8;

   217

		ti->tileh = 0;

   218

		OffsetGroundSprite(31, 1);

   219

	} else {

   220

		// inclined foundation

   221

		sprite_base += 14;

   222

   223

		AddSortableSpriteToDraw(

   224

			HASBIT( (1<<1) | (1<<2) | (1<<4) | (1<<8), ti->tileh) ? sprite_base + (f - 15) : 	ti->tileh + 0x3DE - 1,

   225

			ti->x, ti->y, 1, 1, 1, ti->z

   226

		);

   227

   228

		ti->tileh = _inclined_tileh[f - 15];

   229

		OffsetGroundSprite(31, 9);

   230

	}

   231

}

   232

   233

void DoClearSquare(TileIndex tile)

   234

{

   235

	ModifyTile(tile,

   236

		MP_SETTYPE(MP_CLEAR) |

   237

		MP_MAP2_CLEAR | MP_MAP3LO_CLEAR | MP_MAP3HI_CLEAR | MP_MAPOWNER | MP_MAP5,

   238

		OWNER_NONE, /* map_owner */

   239

		_generating_world ? 3 : 0 /* map5 */

   240

	);

   241

}

   242

   243

uint32 GetTileTrackStatus(TileIndex tile, TransportType mode)

   244

{

   245

	return _tile_type_procs[GetTileType(tile)]->get_tile_track_status_proc(tile, mode);

   246

}

   247

   248

void ChangeTileOwner(TileIndex tile, byte old_player, byte new_player)

   249

{

   250

	_tile_type_procs[GetTileType(tile)]->change_tile_owner_proc(tile, old_player, new_player);

   251

}

   252

   253

void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac)

   254

{

   255

	memset(ac, 0, sizeof(AcceptedCargo));

   256

	_tile_type_procs[GetTileType(tile)]->get_accepted_cargo_proc(tile, ac);

   257

}

   258

   259

void AnimateTile(TileIndex tile)

   260

{

   261

	_tile_type_procs[GetTileType(tile)]->animate_tile_proc(tile);

   262

}

   263

   264

void ClickTile(TileIndex tile)

   265

{

   266

	_tile_type_procs[GetTileType(tile)]->click_tile_proc(tile);

   267

}

   268

   269

void DrawTile(TileInfo *ti)

   270

{

   271

	_tile_type_procs[ti->type]->draw_tile_proc(ti);

   272

}

   273

   274

void GetTileDesc(TileIndex tile, TileDesc *td)

   275

{

   276

	_tile_type_procs[GetTileType(tile)]->get_tile_desc_proc(tile, td);

   277

}

   278

   279

/** Clear a piece of landscape

   280

 * @param x,y coordinates of clearance

   281

 * @param p1 unused

   282

 * @param p2 unused

   283

 */

   284

int32 CmdLandscapeClear(int x, int y, uint32 flags, uint32 p1, uint32 p2)

   285

{

   286

	TileIndex tile = TileVirtXY(x, y);

   287

   288

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   289

   290

	return _tile_type_procs[GetTileType(tile)]->clear_tile_proc(tile, flags);

   291

}

   292

   293

/** Clear a big piece of landscape

   294

 * @param x,y end coordinates of area dragging

   295

 * @param p1 start tile of area dragging

   296

 * @param p2 unused

   297

 */

   298

int32 CmdClearArea(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)

   299

{

   300

	int32 cost, ret, money;

   301

	int sx,sy;

   302

	int x,y;

   303

	bool success = false;

   304

   305

	if (p1 > MapSize()) return CMD_ERROR;

   306

   307

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   308

   309

	// make sure sx,sy are smaller than ex,ey

   310

	sx = TileX(p1) * 16;

   311

	sy = TileY(p1) * 16;

   312

	if (ex < sx) intswap(ex, sx);

   313

	if (ey < sy) intswap(ey, sy);

   314

   315

	money = GetAvailableMoneyForCommand();

   316

	cost = 0;

   317

   318

	for (x = sx; x <= ex; x += 16) {

   319

		for (y = sy; y <= ey; y += 16) {

   320

			ret = DoCommandByTile(TileVirtXY(x, y), 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);

   321

			if (CmdFailed(ret)) continue;

   322

			cost += ret;

   323

			success = true;

   324

   325

			if (flags & DC_EXEC) {

   326

				if (ret > 0 && (money -= ret) < 0) {

   327

					_additional_cash_required = ret;

   328

					return cost - ret;

   329

				}

   330

				DoCommandByTile(TileVirtXY(x, y), 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   331

   332

				// draw explosion animation...

   333

				if ((x == sx || x == ex) && (y == sy || y == ey)) {

   334

					// big explosion in each corner, or small explosion for single tiles

   335

					CreateEffectVehicleAbove(x + 8, y + 8, 2,

   336

						sy == ey && sx == ex ? EV_EXPLOSION_SMALL : EV_EXPLOSION_LARGE

   337

					);

   338

				}

   339

			}

   340

		}

   341

	}

   342

   343

	return (success) ? cost : CMD_ERROR;

   344

}

   345

   346

   347

/* utility function used to modify a tile */

   348

void CDECL ModifyTile(TileIndex tile, uint flags, ...)

   349

{

   350

	va_list va;

   351

	int i;

   352

   353

	va_start(va, flags);

   354

   355

	if ((i = GB(flags, 8, 4)) != 0) {

   356

		SetTileType(tile, i - 1);

   357

	}

   358

   359

	if (flags & (MP_MAP2_CLEAR | MP_MAP2)) {

   360

		int x = 0;

   361

		if (flags & MP_MAP2) x = va_arg(va, int);

   362

		_m[tile].m2 = x;

   363

	}

   364

   365

	if (flags & (MP_MAP3LO_CLEAR | MP_MAP3LO)) {

   366

		int x = 0;

   367

		if (flags & MP_MAP3LO) x = va_arg(va, int);

   368

		_m[tile].m3 = x;

   369

	}

   370

   371

	if (flags & (MP_MAP3HI_CLEAR | MP_MAP3HI)) {

   372

		int x = 0;

   373

		if (flags & MP_MAP3HI) x = va_arg(va, int);

   374

		_m[tile].m4 = x;

   375

	}

   376

   377

	if (flags & (MP_MAPOWNER|MP_MAPOWNER_CURRENT)) {

   378

		byte x = _current_player;

   379

		if (flags & MP_MAPOWNER) x = va_arg(va, int);

   380

		_m[tile].owner = x;

   381

	}

   382

   383

	if (flags & MP_MAP5) {

   384

		_m[tile].m5 = va_arg(va, int);

   385

	}

   386

   387

	va_end(va);

   388

   389

	if (!(flags & MP_NODIRTY))

   390

		MarkTileDirtyByTile(tile);

   391

}

   392

   393

   394

#define TILELOOP_BITS 4

   395

#define TILELOOP_SIZE (1 << TILELOOP_BITS)

   396

#define TILELOOP_ASSERTMASK ((TILELOOP_SIZE-1) + ((TILELOOP_SIZE-1) << MapLogX()))

   397

#define TILELOOP_CHKMASK (((1 << (MapLogX() - TILELOOP_BITS))-1) << TILELOOP_BITS)

   398

   399

void RunTileLoop(void)

   400

{

   401

	TileIndex tile;

   402

	uint count;

   403

   404

	tile = _cur_tileloop_tile;

   405

   406

	assert( (tile & ~TILELOOP_ASSERTMASK) == 0);

   407

	count = (MapSizeX() / TILELOOP_SIZE) * (MapSizeY() / TILELOOP_SIZE);

   408

	do {

   409

		_tile_type_procs[GetTileType(tile)]->tile_loop_proc(tile);

   410

   411

		if (TileX(tile) < MapSizeX() - TILELOOP_SIZE) {

   412

			tile += TILELOOP_SIZE; /* no overflow */

   413

		} else {

   414

			tile = TILE_MASK(tile - TILELOOP_SIZE * (MapSizeX() / TILELOOP_SIZE - 1) + TileDiffXY(0, TILELOOP_SIZE)); /* x would overflow, also increase y */

   415

		}

   416

	} while (--count);

   417

	assert( (tile & ~TILELOOP_ASSERTMASK) == 0);

   418

   419

	tile += 9;

   420

	if (tile & TILELOOP_CHKMASK)

   421

		tile = (tile + MapSizeX()) & TILELOOP_ASSERTMASK;

   422

	_cur_tileloop_tile = tile;

   423

}

   424

   425

void InitializeLandscape(void)

   426

{

   427

	uint map_size;

   428

	uint i;

   429

   430

   431

	map_size = MapSize();

   432

	for (i = 0; i < map_size; i++) {

   433

		_m[i].type_height = MP_CLEAR << 4;

   434

		_m[i].owner       = OWNER_NONE;

   435

		_m[i].m2          = 0;

   436

		_m[i].m3          = 0;

   437

		_m[i].m4          = 0;

   438

		_m[i].m5          = 3;

   439

		_m[i].extra       = 0;

   440

	}

   441

   442

	// create void tiles at the border

   443

	for (i = 0; i < MapMaxY(); ++i)

   444

		SetTileType(i * MapSizeX() + MapMaxX(), MP_VOID);

   445

	for (i = 0; i < MapSizeX(); ++i)

   446

		SetTileType(MapSizeX() * MapMaxY() + i, MP_VOID);

   447

}

   448

   449

void ConvertGroundTilesIntoWaterTiles(void)

   450

{

   451

	TileIndex tile = 0;

   452

	uint h;

   453

   454

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

   455

		if (IsTileType(tile, MP_CLEAR) && GetTileSlope(tile, &h) == 0 && h == 0) {

   456

			SetTileType(tile, MP_WATER);

   457

			_m[tile].m5 = 0;

   458

			SetTileOwner(tile, OWNER_WATER);

   459

		}

   460

	}

   461

}

   462

   463

static const byte _genterrain_tbl_1[5] = { 10, 22, 33, 37, 4 };

   464

static const byte _genterrain_tbl_2[5] = { 0, 0, 0, 0, 33 };

   465

   466

static void GenerateTerrain(int type, int flag)

   467

{

   468

	uint32 r;

   469

	uint x;

   470

	uint y;

   471

	uint w;

   472

	uint h;

   473

	const Sprite* template;

   474

	const byte *p;

   475

	Tile* tile;

   476

	byte direction;

   477

   478

	r = Random();

   479

	template = GetSprite((((r >> 24) * _genterrain_tbl_1[type]) >> 8) + _genterrain_tbl_2[type] + 4845);

   480

   481

	x = r & MapMaxX();

   482

	y = (r >> MapLogX()) & MapMaxY();

   483

   484

   485

	if (x < 2 || y < 2)

   486

		return;

   487

   488

	direction = GB(r, 22, 2);

   489

	if (direction & 1) {

   490

		w = template->height;

   491

		h = template->width;

   492

	} else {

   493

		w = template->width;

   494

		h = template->height;

   495

	}

   496

	p = template->data;

   497

   498

	if (flag & 4) {

   499

		uint xw = x * MapSizeY();

   500

		uint yw = y * MapSizeX();

   501

		uint bias = (MapSizeX() + MapSizeY()) * 16;

   502

   503

		switch (flag & 3) {

   504

			case 0:

   505

				if (xw + yw > MapSize() - bias) return;

   506

				break;