1

/* $Id$ */

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     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "bridge_map.h"

     6

#include "heightmap.h"

     7

#include "clear_map.h"

     8

#include "functions.h"

     9

#include "map.h"

    10

#include "player.h"

    11

#include "spritecache.h"

    12

#include "table/sprites.h"

    13

#include "tile.h"

    14

#include <stdarg.h>

    15

#include "viewport.h"

    16

#include "command.h"

    17

#include "vehicle.h"

    18

#include "variables.h"

    19

#include "void_map.h"

    20

#include "water_map.h"

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#include "tgp.h"

    22

#include "genworld.h"

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#include "heightmap.h"

    24

    25

extern const TileTypeProcs

    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,

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	_tile_type_dummy_procs,

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	_tile_type_industry_procs,

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	_tile_type_tunnelbridge_procs,

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	_tile_type_unmovable_procs;

    37

    38

const TileTypeProcs * const _tile_type_procs[16] = {

    39

	&_tile_type_clear_procs,

    40

	&_tile_type_rail_procs,

    41

	&_tile_type_road_procs,

    42

	&_tile_type_town_procs,

    43

	&_tile_type_trees_procs,

    44

	&_tile_type_station_procs,

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	&_tile_type_water_procs,

    46

	&_tile_type_dummy_procs,

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	&_tile_type_industry_procs,

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	&_tile_type_tunnelbridge_procs,

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	&_tile_type_unmovable_procs,

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};

    51

    52

/* landscape slope => sprite */

    53

const byte _tileh_to_sprite[32] = {

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	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,

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};

    57

    58

const Slope _inclined_tileh[] = {

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	SLOPE_SW,  SLOPE_NW,  SLOPE_SW,  SLOPE_SE, SLOPE_NE, SLOPE_SE, SLOPE_NE, SLOPE_NW,

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	SLOPE_E,   SLOPE_N,   SLOPE_W,   SLOPE_S,

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	SLOPE_NWS, SLOPE_WSE, SLOPE_SEN, SLOPE_ENW

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};

    63

    64

    65

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

    66

{

    67

	int z = 0;

    68

    69

	switch (corners) {

    70

	case SLOPE_W:

    71

		if (x - y >= 0)

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			z = (x - y) >> 1;

    73

		break;

    74

    75

	case SLOPE_S:

    76

		y^=0xF;

    77

		if ( (x - y) >= 0)

    78

			z = (x - y) >> 1;

    79

		break;

    80

    81

	case SLOPE_SW:

    82

		z = (x>>1) + 1;

    83

		break;

    84

    85

	case SLOPE_E:

    86

		if (y - x >= 0)

    87

			z = (y - x) >> 1;

    88

		break;

    89

    90

	case SLOPE_EW:

    91

	case SLOPE_NS:

    92

	case SLOPE_ELEVATED:

    93

		z = 4;

    94

		break;

    95

    96

	case SLOPE_SE:

    97

		z = (y>>1) + 1;

    98

		break;

    99

   100

	case SLOPE_WSE:

   101

		z = 8;

   102

		y^=0xF;

   103

		if (x - y < 0)

   104

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

   105

		break;

   106

   107

	case SLOPE_N:

   108

		y ^= 0xF;

   109

		if (y - x >= 0)

   110

			z = (y - x) >> 1;

   111

		break;

   112

   113

	case SLOPE_NW:

   114

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

   115

		break;

   116

   117

	case SLOPE_NWS:

   118

		z = 8;

   119

		if (x - y < 0)

   120

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

   121

		break;

   122

   123

	case SLOPE_NE:

   124

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

   125

		break;

   126

   127

	case SLOPE_ENW:

   128

		z = 8;

   129

		y ^= 0xF;

   130

		if (y - x < 0)

   131

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

   132

		break;

   133

   134

	case SLOPE_SEN:

   135

		z = 8;

   136

		if (y - x < 0)

   137

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

   138

		break;

   139

   140

	case SLOPE_STEEP_S:

   141

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

   142

		break;

   143

   144

	case SLOPE_STEEP_W:

   145

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

   146

		break;

   147

   148

	case SLOPE_STEEP_N:

   149

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

   150

		break;

   151

   152

	case SLOPE_STEEP_E:

   153

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

   154

		break;

   155

   156

		default: break;

   157

	}

   158

   159

	return z;

   160

}

   161

   162

uint GetSlopeZ(int x, int y)

   163

{

   164

	TileIndex tile = TileVirtXY(x, y);

   165

   166

	return _tile_type_procs[GetTileType(tile)]->get_slope_z_proc(tile, x, y);

   167

}

   168

   169

   170

static Slope GetFoundationSlope(TileIndex tile, uint* z)

   171

{

   172

	Slope tileh = GetTileSlope(tile, z);

   173

	Slope slope = _tile_type_procs[GetTileType(tile)]->get_slope_tileh_proc(tile, tileh);

   174

   175

	// Flatter slope -> higher base height

   176

	if (slope < tileh) *z += TILE_HEIGHT;

   177

	return slope;

   178

}

   179

   180

   181

static bool HasFoundationNW(TileIndex tile, Slope slope_here, uint z_here)

   182

{

   183

	uint z;

   184

	Slope slope = GetFoundationSlope(TILE_ADDXY(tile, 0, -1), &z);

   185

   186

	return

   187

		(

   188

			z_here + (slope_here & SLOPE_N ? TILE_HEIGHT : 0) + (slope_here == SLOPE_STEEP_N ? TILE_HEIGHT : 0) >

   189

			z      + (slope      & SLOPE_E ? TILE_HEIGHT : 0) + (slope      == SLOPE_STEEP_E ? TILE_HEIGHT : 0)

   190

		) || (

   191

			z_here + (slope_here & SLOPE_W ? TILE_HEIGHT : 0) + (slope_here == SLOPE_STEEP_W ? TILE_HEIGHT : 0) >

   192

			z      + (slope      & SLOPE_S ? TILE_HEIGHT : 0) + (slope      == SLOPE_STEEP_S ? TILE_HEIGHT : 0)

   193

		);

   194

}

   195

   196

   197

static bool HasFoundationNE(TileIndex tile, Slope slope_here, uint z_here)

   198

{

   199

	uint z;

   200

	Slope slope = GetFoundationSlope(TILE_ADDXY(tile, -1, 0), &z);

   201

   202

	return

   203

		(

   204

			z_here + (slope_here & SLOPE_N ? TILE_HEIGHT : 0) + (slope_here == SLOPE_STEEP_N ? TILE_HEIGHT : 0) >

   205

			z      + (slope      & SLOPE_W ? TILE_HEIGHT : 0) + (slope      == SLOPE_STEEP_W ? TILE_HEIGHT : 0)

   206

		) || (

   207

			z_here + (slope_here & SLOPE_E ? TILE_HEIGHT : 0) + (slope_here == SLOPE_STEEP_E ? TILE_HEIGHT : 0) >

   208

			z      + (slope      & SLOPE_S ? TILE_HEIGHT : 0) + (slope      == SLOPE_STEEP_S ? TILE_HEIGHT : 0)

   209

		);

   210

}

   211

   212

   213

void DrawFoundation(TileInfo *ti, uint f)

   214

{

   215

	uint32 sprite_base = SPR_SLOPES_BASE - 15;

   216

	Slope slope;

   217

	uint z;

   218

   219

	slope = GetFoundationSlope(ti->tile, &z);

   220

	if (!HasFoundationNW(ti->tile, slope, z)) sprite_base += 22;

   221

	if (!HasFoundationNE(ti->tile, slope, z)) sprite_base += 44;

   222

   223

	if (IsSteepSlope(ti->tileh)) {

   224

		uint32 lower_base;

   225

   226

		// Lower part of foundation

   227

		lower_base = sprite_base;

   228

		if (lower_base == SPR_SLOPES_BASE - 15) lower_base = SPR_FOUNDATION_BASE;

   229

		AddSortableSpriteToDraw(

   230

			lower_base + (ti->tileh & ~SLOPE_STEEP), ti->x, ti->y, 16, 16, 7, ti->z

   231

		);

   232

		ti->z += TILE_HEIGHT;

   233

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

   234

		if (f < 15 + 8) {

   235

			// inclined

   236

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

   237

			OffsetGroundSprite(31, 9);

   238

		} else if (f >= 15 + 8 + 4) {

   239

			// three corners raised

   240

			uint32 upper = sprite_base + 15 + (f - 15 - 8 - 4) * 2;

   241

   242

			AddSortableSpriteToDraw(upper, ti->x, ti->y, 16, 16, 1, ti->z);

   243

			AddChildSpriteScreen(upper + 1, 31, 9);

   244

			OffsetGroundSprite(31, 9);

   245

		} else {

   246

			// one corner raised

   247

			OffsetGroundSprite(31, 1);

   248

		}

   249

	} else {

   250

		if (f < 15) {

   251

			// leveled foundation

   252

			// Use the original slope sprites if NW and NE borders should be visible

   253

			if (sprite_base  == SPR_SLOPES_BASE - 15) sprite_base = SPR_FOUNDATION_BASE;

   254

   255

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

   256

			ti->z += TILE_HEIGHT;

   257

			ti->tileh = SLOPE_FLAT;

   258

			OffsetGroundSprite(31, 1);

   259

		} else {

   260

			// inclined foundation

   261

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

   262

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

   263

			OffsetGroundSprite(31, 9);

   264

		}

   265

	}

   266

}

   267

   268

void DoClearSquare(TileIndex tile)

   269

{

   270

	MakeClear(tile, CLEAR_GRASS, _generating_world ? 3 : 0);

   271

	MarkTileDirtyByTile(tile);

   272

}

   273

   274

uint32 GetTileTrackStatus(TileIndex tile, TransportType mode)

   275

{

   276

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

   277

}

   278

   279

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

   280

{

   281

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

   282

}

   283

   284

void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac)

   285

{

   286

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

   287

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

   288

}

   289

   290

void AnimateTile(TileIndex tile)

   291

{

   292

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

   293

}

   294

   295

void ClickTile(TileIndex tile)

   296

{

   297

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

   298

}

   299

   300

void GetTileDesc(TileIndex tile, TileDesc *td)

   301

{

   302

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

   303

}

   304

   305

/** Clear a piece of landscape

   306

 * @param tile tile to clear

   307

 * @param p1 unused

   308

 * @param p2 unused

   309

 */

   310

int32 CmdLandscapeClear(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   311

{

   312

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   313

   314

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

   315

}

   316

   317

/** Clear a big piece of landscape

   318

 * @param tile end tile of area dragging

   319

 * @param p1 start tile of area dragging

   320

 * @param p2 unused

   321

 */

   322

int32 CmdClearArea(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

   323

{

   324

	int32 cost, ret, money;

   325

	int ex;

   326

	int ey;

   327

	int sx,sy;

   328

	int x,y;

   329

	bool success = false;

   330

   331

	if (p1 >= MapSize()) return CMD_ERROR;

   332

   333

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   334

   335

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

   336

	ex = TileX(tile);

   337

	ey = TileY(tile);

   338

	sx = TileX(p1);

   339

	sy = TileY(p1);

   340

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

   341

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

   342

   343

	money = GetAvailableMoneyForCommand();

   344

	cost = 0;

   345

   346

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

   347

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

   348

			ret = DoCommand(TileXY(x, y), 0, 0, flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);

   349

			if (CmdFailed(ret)) continue;

   350

			cost += ret;

   351

			success = true;

   352

   353

			if (flags & DC_EXEC) {

   354

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

   355

					_additional_cash_required = ret;

   356

					return cost - ret;

   357

				}

   358

				DoCommand(TileXY(x, y), 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   359

   360

				// draw explosion animation...

   361

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

   362

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

   363

					CreateEffectVehicleAbove(x * TILE_SIZE + TILE_SIZE / 2, y * TILE_SIZE + TILE_SIZE / 2, 2,

   364

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

   365

					);

   366

				}

   367

			}

   368

		}

   369

	}

   370

   371

	return (success) ? cost : CMD_ERROR;

   372

}

   373

   374

   375

#define TILELOOP_BITS 4

   376

#define TILELOOP_SIZE (1 << TILELOOP_BITS)

   377

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

   378

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

   379

   380

void RunTileLoop(void)

   381

{

   382

	TileIndex tile;

   383

	uint count;

   384

   385

	tile = _cur_tileloop_tile;

   386

   387

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

   388

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

   389

	do {

   390

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

   391

   392

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

   393

			tile += TILELOOP_SIZE; /* no overflow */

   394

		} else {

   395

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

   396

		}

   397

	} while (--count);

   398

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

   399

   400

	tile += 9;

   401

	if (tile & TILELOOP_CHKMASK)

   402

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

   403

	_cur_tileloop_tile = tile;

   404

}

   405

   406

void InitializeLandscape(void)

   407

{

   408

	uint maxx = MapMaxX();

   409

	uint maxy = MapMaxY();

   410

	uint sizex = MapSizeX();

   411

	uint x;

   412

	uint y;

   413

   414

	for (y = 0; y < maxy; y++) {

   415

		for (x = 0; x < maxx; x++) {

   416

			MakeClear(sizex * y + x, CLEAR_GRASS, 3);

   417

			SetTileHeight(sizex * y + x, 0);

   418

			SetTropicZone(sizex * y + x, TROPICZONE_INVALID);

   419

			ClearBridgeMiddle(sizex * y + x);

   420

		}

   421

		MakeVoid(sizex * y + x);

   422

	}

   423

	for (x = 0; x < sizex; x++) MakeVoid(sizex * y + x);

   424

}

   425

   426

void ConvertGroundTilesIntoWaterTiles(void)

   427

{

   428

	TileIndex tile;

   429

	uint z;

   430

	Slope slope;

   431

   432

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

   433

		slope = GetTileSlope(tile, &z);

   434

		if (IsTileType(tile, MP_CLEAR) && z == 0) {

   435

			/* Make both water for tiles at level 0

   436

			 * and make shore, as that looks much better

   437

			 * during the generation. */

   438

			switch (slope) {

   439

				case SLOPE_FLAT:

   440

					MakeWater(tile);

   441

					break;

   442

   443

				case SLOPE_N:

   444

				case SLOPE_E:

   445

				case SLOPE_S:

   446

				case SLOPE_W:

   447

				case SLOPE_NW:

   448

				case SLOPE_SW:

   449

				case SLOPE_SE:

   450

				case SLOPE_NE:

   451

					MakeShore(tile);

   452

					break;

   453

   454

				default:

   455

					break;

   456

			}

   457

		}

   458

	}

   459

}

   460

   461

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

   462

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

   463

   464

static void GenerateTerrain(int type, int flag)

   465

{

   466

	uint32 r;

   467

	uint x;

   468

	uint y;

   469

	uint w;

   470

	uint h;

   471

	const Sprite* templ;

   472

	const byte *p;

   473

	Tile* tile;

   474

	byte direction;

   475

   476

	r = Random();

   477

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

   478

   479

	x = r & MapMaxX();

   480

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

   481

   482

   483

	if (x < 2 || y < 2) return;

   484

   485

	direction = GB(r, 22, 2);

   486

	if (direction & 1) {

   487

		w = templ->height;

   488

		h = templ->width;

   489

	} else {

   490

		w = templ->width;

   491

		h = templ->height;

   492

	}

   493

	p = templ->data;

   494

   495

	if (flag & 4) {

   496

		uint xw = x * MapSizeY();