1

#include "stdafx.h"

     3

#include "map.h"

     4

#include "spritecache.h"

     5

#include "table/sprites.h"

     6

#include "tile.h"

     7

#include <stdarg.h>

     8

#include "gfx.h"

     9

#include "viewport.h"

    10

#include "command.h"

    11

#include "vehicle.h"

    12

    13

extern const TileTypeProcs

    14

	_tile_type_clear_procs,

    15

	_tile_type_rail_procs,

    16

	_tile_type_road_procs,

    17

	_tile_type_town_procs,

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	_tile_type_trees_procs,

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	_tile_type_station_procs,

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	_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;

    25

    26

const TileTypeProcs * const _tile_type_procs[16] = {

    27

	&_tile_type_clear_procs,

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	&_tile_type_rail_procs,

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	&_tile_type_road_procs,

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	&_tile_type_town_procs,

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	&_tile_type_trees_procs,

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	&_tile_type_station_procs,

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	&_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,

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};

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    40

/* landscape slope => sprite */

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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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};

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    46

    47

void FindLandscapeHeightByTile(TileInfo *ti, TileIndex tile)

    48

{

    49

	assert(tile < MapSize());

    50

    51

	ti->tile = tile;

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	ti->map5 = _map5[tile];

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	ti->type = GetTileType(tile);

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

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}

    56

    57

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

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

    59

{

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	ti->x = x;

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	ti->y = y;

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    63

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

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		ti->tileh = 0;

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		ti->type = MP_VOID;

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		ti->tile = 0;

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		ti->map5 = 0;

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		ti->z = 0;

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		return;

    70

	}

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    72

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

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}

    74

    75

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

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{

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	int z = 0;

    78

    79

	switch(corners) {

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	case 1:

    81

		if (x - y >= 0)

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			z = (x - y) >> 1;

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		break;

    84

    85

	case 2:

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		y^=0xF;

    87

		if ( (x - y) >= 0)

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			z = (x - y) >> 1;

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		break;

    90

    91

	case 3:

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		z = (x>>1) + 1;

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		break;

    94

    95

	case 4:

    96

		if (y - x >= 0)

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			z = (y - x) >> 1;

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		break;

    99

   100

	case 5:

   101

	case 10:

   102

	case 15:

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		z = 4;

   104

		break;

   105

   106

	case 6:

   107

		z = (y>>1) + 1;

   108

		break;

   109

   110

	case 7:

   111

		z = 8;

   112

		y^=0xF;

   113

		if (x - y < 0)

   114

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

   115

		break;

   116

   117

	case 8:

   118

		y ^= 0xF;

   119

		if (y - x >= 0)

   120

			z = (y - x) >> 1;

   121

		break;

   122

   123

	case 9:

   124

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

   125

		break;

   126

   127

	case 11:

   128

		z = 8;

   129

		if (x - y < 0)

   130

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

   131

		break;

   132

   133

	case 12:

   134

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

   135

		break;

   136

   137

	case 13:

   138

		z = 8;

   139

		y ^= 0xF;

   140

		if (y - x < 0)

   141

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

   142

		break;

   143

   144

	case 14:

   145

		z = 8;

   146

		if (y - x < 0)

   147

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

   148

		break;

   149

   150

	case 23:

   151

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

   152

		break;

   153

   154

	case 27:

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

   156

		break;

   157

   158

	case 29:

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

   160

		break;

   161

   162

	case 30:

   163

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

   164

		break;

   165

	}

   166

   167

	return z;

   168

}

   169

   170

uint GetSlopeZ(int x,  int y)

   171

{

   172

	TileInfo ti;

   173

   174

	FindLandscapeHeight(&ti, x, y);

   175

   176

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

   177

}

   178

   179

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

   180

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

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static bool hasFoundation(TileInfo *ti, bool direction)

   182

{

   183

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

   184

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

   185

	uint tileh = ti->tileh;

   186

   187

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

   188

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

   189

   190

	if(direction)

   191

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

   192

	else

   193

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

   194

	return south || other;

   195

   196

}

   197

   198

void DrawFoundation(TileInfo *ti, uint f)

   199

{

   200

	uint32 sprite_base = SPR_SLOPES_BASE-14;

   201

   202

	TileInfo ti2;

   203

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

   204

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

   205

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

   206

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

   207

   208

	if (f < 15) {

   209

		// leveled foundation

   210

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

   211

   212

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

   213

		ti->z += 8;

   214

		ti->tileh = 0;

   215

		OffsetGroundSprite(31, 1);

   216

	} else {

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		// inclined foundation

   218

		sprite_base += 14;

   219

   220

		AddSortableSpriteToDraw(

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

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

   223

		);

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   225

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

   226

		OffsetGroundSprite(31, 9);

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	}

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}

   229

   230

void DoClearSquare(TileIndex tile)

   231

{

   232

	ModifyTile(tile,

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		MP_SETTYPE(MP_CLEAR) |

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		MP_MAP2_CLEAR | MP_MAP3LO_CLEAR | MP_MAP3HI_CLEAR | MP_MAPOWNER | MP_MAP5,

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		OWNER_NONE, /* map_owner */

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		_generating_world ? 3 : 0 /* map5 */

   237

	);

   238

}

   239

   240

uint32 GetTileTrackStatus(TileIndex tile, TransportType mode)

   241

{

   242

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

   243

}

   244

   245

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

   246

{

   247

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

   248

}

   249

   250

void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac)

   251

{

   252

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

   253

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

   254

}

   255

   256

void AnimateTile(TileIndex tile)

   257

{

   258

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

   259

}

   260

   261

void ClickTile(TileIndex tile)

   262

{

   263

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

   264

}

   265

   266

void DrawTile(TileInfo *ti)

   267

{

   268

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

   269

}

   270

   271

void GetTileDesc(TileIndex tile, TileDesc *td)

   272

{

   273

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

   274

}

   275

   276

/** Clear a piece of landscape

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 * @param x,y coordinates of clearance

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 * @param p1 unused

   279

 * @param p2 unused

   280

 */

   281

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

   282

{

   283

	TileIndex tile = TILE_FROM_XY(x, y);

   284

   285

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   286

   287

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

   288

}

   289

   290

/** Clear a big piece of landscape

   291

 * @param x,y end coordinates of area dragging

   292

 * @param p1 start tile of area dragging

   293

 * @param p2 unused

   294

 */

   295

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

   296

{

   297

	int32 cost, ret, money;

   298

	int sx,sy;

   299

	int x,y;

   300

	bool success = false;

   301

   302

	if (p1 > MapSize()) return CMD_ERROR;

   303

   304

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   305

   306

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

   307

	sx = TileX(p1) * 16;

   308

	sy = TileY(p1) * 16;

   309

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

   310

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

   311

   312

	money = GetAvailableMoneyForCommand();

   313

	cost = 0;

   314

   315

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

   316

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

   317

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

   318

			if (CmdFailed(ret)) continue;

   319

			cost += ret;

   320

			success = true;

   321

   322

			if (flags & DC_EXEC) {

   323

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

   324

					_additional_cash_required = ret;

   325

					return cost - ret;

   326

				}

   327

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

   328

   329

				// draw explosion animation...

   330

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

   331

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

   332

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

   333

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

   334

					);

   335

				}

   336

			}

   337

		}

   338

	}

   339

   340

	return (success) ? cost : CMD_ERROR;

   341

}

   342

   343

   344

/* utility function used to modify a tile */

   345

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

   346

{

   347

	va_list va;

   348

	int i;

   349

   350

	va_start(va, flags);

   351

   352

	if ((i = (flags >> 8) & 0xF) != 0) {

   353

		SetTileType(tile, i - 1);

   354

	}

   355

   356

	if (flags & (MP_MAP2_CLEAR | MP_MAP2)) {

   357

		int x = 0;

   358

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

   359

		_map2[tile] = x;

   360

	}

   361

   362

	if (flags & (MP_MAP3LO_CLEAR | MP_MAP3LO)) {

   363

		int x = 0;

   364

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

   365

		_map3_lo[tile] = x;

   366

	}

   367

   368

	if (flags & (MP_MAP3HI_CLEAR | MP_MAP3HI)) {

   369

		int x = 0;

   370

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

   371

		_map3_hi[tile] = x;

   372

	}

   373

   374

	if (flags & (MP_MAPOWNER|MP_MAPOWNER_CURRENT)) {

   375

		byte x = _current_player;

   376

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

   377

		_map_owner[tile] = x;

   378

	}

   379

   380

	if (flags & MP_MAP5) {

   381

		_map5[tile] = va_arg(va, int);

   382

	}

   383

   384

	va_end(va);

   385

   386

	if (!(flags & MP_NODIRTY))

   387

		MarkTileDirtyByTile(tile);

   388

}

   389

   390

   391

#define TILELOOP_BITS 4

   392

#define TILELOOP_SIZE (1 << TILELOOP_BITS)

   393

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

   394

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

   395

   396

void RunTileLoop(void)

   397

{

   398

	TileIndex tile;

   399

	uint count;

   400

   401

	tile = _cur_tileloop_tile;

   402

   403

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

   404

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

   405

	do {

   406

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

   407

   408

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

   409

			tile += TILELOOP_SIZE; /* no overflow */

   410

		} else {

   411

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

   412

		}

   413

	} while (--count);

   414

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

   415

   416

	tile += 9;

   417

	if (tile & TILELOOP_CHKMASK)

   418

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

   419

	_cur_tileloop_tile = tile;

   420

}

   421

   422

void InitializeLandscape(uint log_x, uint log_y)

   423

{

   424

	uint map_size;

   425

	uint i;

   426

   427

	InitMap(log_x, log_y);

   428

	map_size = MapSize();

   429

   430

	memset(_map_type_and_height, MP_CLEAR << 4, map_size);

   431

	memset(_map_owner,              OWNER_NONE, map_size);

   432

	memset(_map2,                            0, map_size * sizeof(_map2[0]));

   433

	memset(_map3_lo,                         0, map_size);

   434

	memset(_map3_hi,                         0, map_size);

   435

	memset(_map5,                            3, map_size);

   436

	memset(_map_extra_bits,                  0, map_size / 4);

   437

   438

	// create void tiles at the border

   439

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

   440

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

   441

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

   442

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

   443

}

   444

   445

void ConvertGroundTilesIntoWaterTiles(void)

   446

{

   447

	TileIndex tile = 0;

   448

	uint h;

   449

   450

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

   451

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

   452

			SetTileType(tile, MP_WATER);

   453

			_map5[tile] = 0;

   454

			_map_owner[tile] = OWNER_WATER;

   455

		}

   456

	}

   457

}

   458

   459

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

   460

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

   461

   462

static void GenerateTerrain(int type, int flag)

   463

{

   464

	uint32 r;

   465

	uint x;

   466

	uint y;

   467

	uint w;

   468

	uint h;

   469

	const Sprite* template;

   470

	const byte *p;

   471

	byte *tile;

   472

	byte direction;

   473

   474

	r = Random();

   475

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

   476

   477

	x = r & MapMaxX();

   478

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

   479

   480

   481

	if (x < 2 || y < 2)

   482

		return;

   483

   484

	direction = (r >> 22) & 3;

   485

	if (direction & 1) {

   486

		w = template->height;

   487

		h = template->width;

   488

	} else {

   489

		w = template->width;

   490

		h = template->height;

   491

	}

   492

	p = template->data;

   493

   494

	if (flag & 4) {

   495

		uint xw = x * MapSizeY();

   496

		uint yw = y * MapSizeX();

   497

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

   498

   499

		switch (flag & 3) {

   500

			case 0:

   501

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

   502

				break;

   503

   504

			case 1:

   505

				if (yw < xw + bias) return;

   506

				break;

   507

   508

			case 2: