1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "vehicle.h"

     4

#include "viewport.h"

     5

#include "command.h"

     6

#include "pathfind.h"

     7

#include "town.h"

     8

#include "sound.h"

     9

#include "station.h"

    11

    12

void ShowTrainDepotWindow(uint tile);

    13

    14

enum { /* These values are bitmasks for the map5 byte */

    15

	RAIL_TYPE_NORMAL = 0,

    16

	RAIL_TYPE_SIGNALS = 0x40,

    17

	RAIL_TYPE_SPECIAL = 0x80, // If this bit is set, then it's not a regular track.

    18

	RAIL_TYPE_DEPOT = 0xC0,

    19

	RAIL_TYPE_MASK = 0xC0,

    20

    21

	RAIL_BIT_DIAG1 = 1,  // 0

    22

	RAIL_BIT_DIAG2 = 2,  // 1

    23

	RAIL_BIT_UPPER = 4,  // 2

    24

	RAIL_BIT_LOWER = 8,  // 3

    25

	RAIL_BIT_LEFT  = 16, // 4

    26

	RAIL_BIT_RIGHT = 32, // 5

    27

	RAIL_BIT_MASK = 0x3F,

    28

    29

	RAIL_DEPOT_TRACK_MASK = 1,

    30

	RAIL_DEPOT_DIR = 3,

    31

	RAIL_DEPOT_UNUSED_BITS = 0x3C,

    32

    33

	RAIL_TYPE_WAYPOINT = 0xC4,

    34

	RAIL_WAYPOINT_TRACK_MASK = 1,

    35

	RAIL_WAYPOINT_UNUSED_BITS = 0x3E,

    36

};

    37

    38

#define IS_RAIL_DEPOT(x) (((x) & (RAIL_TYPE_DEPOT|RAIL_DEPOT_UNUSED_BITS)) == RAIL_TYPE_DEPOT)

    39

#define IS_RAIL_WAYPOINT(x) (((x) & (RAIL_TYPE_WAYPOINT|RAIL_WAYPOINT_UNUSED_BITS)) == RAIL_TYPE_WAYPOINT)

    40

    41

/* Format of rail map5 byte.

    42

 * 00 abcdef  => Normal rail

    43

 * 01 abcdef  => Rail with signals

    44

 * 10 ??????  => Unused

    45

 * 11 ????dd  => Depot

    46

 *

    47

 * abcdef is a bitmask, which contains ones for all present tracks. Below the

    48

 * value for each track is given.

    49

 */

    50

    51

/*         4

    52

 *     ---------

    53

 *    |\       /|

    54

 *    | \    1/ |

    55

 *    |  \   /  |

    56

 *    |   \ /   |

    57

 *  16|    \    |32

    58

 *    |   / \2  |

    59

 *    |  /   \  |

    60

 *    | /     \ |

    61

 *    |/       \|

    62

 *     ---------

    63

 *         8

    64

 */

    65

    66

    67

// Constants for lower part of Map2 byte.

    68

enum RailMap2Lower4 {

    69

	RAIL_MAP2LO_GROUND_MASK = 0xF,

    70

	RAIL_GROUND_BROWN = 0,

    71

	RAIL_GROUND_GREEN = 1,

    72

	RAIL_GROUND_FENCE_NW = 2,

    73

	RAIL_GROUND_FENCE_SE = 3,

    74

	RAIL_GROUND_FENCE_SENW = 4,

    75

	RAIL_GROUND_FENCE_NE = 5,

    76

	RAIL_GROUND_FENCE_SW = 6,

    77

	RAIL_GROUND_FENCE_NESW = 7,

    78

	RAIL_GROUND_FENCE_VERT1 = 8,

    79

	RAIL_GROUND_FENCE_VERT2 = 9,

    80

	RAIL_GROUND_FENCE_HORIZ1 = 10,

    81

	RAIL_GROUND_FENCE_HORIZ2 = 11,

    82

	RAIL_GROUND_ICE_DESERT = 12,

    83

};

    84

    85

    86

/* MAP2 byte:    abcd???? => Signal On? Same coding as map3lo

    87

 * MAP3LO byte:  abcd???? => Signal Exists?

    88

 *				 a and b are for diagonals, upper and left,

    89

 *				 one for each direction. (ie a == NE->SW, b ==

    90

 *				 SW->NE, or v.v., I don't know. b and c are

    91

 *				 similar for lower and right.

    92

 * MAP2 byte:    ????abcd => Type of ground.

    93

 * MAP3LO byte:  ????abcd => Type of rail.

    94

 * MAP5:         00abcdef => rail

    95

 *               01abcdef => rail w/ signals

    96

 *               10uuuuuu => unused

    97

 *               11uuuudd => rail depot

    98

 */

    99

   100

static bool CheckTrackCombination(byte map5, byte trackbits, byte flags)

   101

{

   102

	_error_message = STR_1001_IMPOSSIBLE_TRACK_COMBINATION;

   103

   104

	if ((map5&RAIL_TYPE_MASK) == RAIL_TYPE_SIGNALS) {

   105

   106

		if (map5 & trackbits) {

   107

			_error_message = STR_1007_ALREADY_BUILT;

   108

			return false;

   109

		}

   110

   111

		map5 |= trackbits;

   112

		return (map5 == (RAIL_TYPE_SIGNALS|RAIL_BIT_UPPER|RAIL_BIT_LOWER) || map5 == (RAIL_TYPE_SIGNALS|RAIL_BIT_LEFT|RAIL_BIT_RIGHT));

   113

   114

	} else if ((map5&RAIL_TYPE_MASK) == RAIL_TYPE_NORMAL) {

   115

		_error_message = STR_1007_ALREADY_BUILT;

   116

		if (map5 & trackbits)

   117

			return false;

   118

   119

		// Computer players are not allowed to intersect pieces of rail.

   120

		if (!(flags&DC_NO_RAIL_OVERLAP))

   121

			return true;

   122

   123

		map5 |= trackbits;

   124

		return (map5 == (RAIL_BIT_UPPER|RAIL_BIT_LOWER) || map5 == (RAIL_BIT_LEFT|RAIL_BIT_RIGHT));

   125

	} else {

   126

		return false;

   127

	}

   128

}

   129

   130

   131

static const byte _valid_tileh_slopes[4][15] = {

   132

   133

// set of normal ones

   134

{

   135

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   136

	RAIL_BIT_RIGHT,

   137

	RAIL_BIT_UPPER,

   138

	RAIL_BIT_DIAG1,

   139

   140

	RAIL_BIT_LEFT,

   141

	0,

   142

	RAIL_BIT_DIAG2,

   143

	RAIL_BIT_LOWER,

   144

   145

	RAIL_BIT_LOWER,

   146

	RAIL_BIT_DIAG2,

   147

	0,

   148

	RAIL_BIT_LEFT,

   149

   150

	RAIL_BIT_DIAG1,

   151

	RAIL_BIT_UPPER,

   152

	RAIL_BIT_RIGHT,

   153

},

   154

   155

// allowed rail for an evenly raised platform

   156

{

   157

	0,

   158

	RAIL_BIT_LEFT,

   159

	RAIL_BIT_LOWER,

   160

	RAIL_BIT_DIAG2 | RAIL_BIT_LOWER | RAIL_BIT_LEFT,

   161

   162

	RAIL_BIT_RIGHT,

   163

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   164

	RAIL_BIT_DIAG1 | RAIL_BIT_LOWER | RAIL_BIT_RIGHT,

   165

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   166

   167

	RAIL_BIT_UPPER,

   168

	RAIL_BIT_DIAG1 | RAIL_BIT_UPPER | RAIL_BIT_LEFT,

   169

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   170

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   171

   172

	RAIL_BIT_DIAG2 | RAIL_BIT_UPPER | RAIL_BIT_RIGHT,

   173

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   174

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   175

},

   176

   177

// allowed rail on coast tile

   178

{

   179

	0,

   180

	RAIL_BIT_LEFT,

   181

	RAIL_BIT_LOWER,

   182

	RAIL_BIT_DIAG2|RAIL_BIT_LEFT|RAIL_BIT_LOWER,

   183

   184

	RAIL_BIT_RIGHT,

   185

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   186

	RAIL_BIT_DIAG1|RAIL_BIT_RIGHT|RAIL_BIT_LOWER,

   187

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   188

   189

	RAIL_BIT_UPPER,

   190

	RAIL_BIT_DIAG1|RAIL_BIT_LEFT|RAIL_BIT_UPPER,

   191

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   192

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   193

   194

	RAIL_BIT_DIAG2|RAIL_BIT_RIGHT|RAIL_BIT_UPPER,

   195

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   196

	RAIL_BIT_DIAG1|RAIL_BIT_DIAG2|RAIL_BIT_UPPER|RAIL_BIT_LOWER|RAIL_BIT_LEFT|RAIL_BIT_RIGHT,

   197

	},

   198

   199

	// valid railway crossings on slopes

   200

	{

   201

		1, 0, 0, // 0, 1, 2

   202

		0, 0, 1, // 3, 4, 5

   203

		0, 1, 0, // 6, 7, 8

   204

		0, 1, 1, // 9, 10, 11

   205

		0, 1, 1, // 12, 13, 14

   206

	}

   207

};

   208

   209

uint GetRailFoundation(uint tileh, uint bits)

   210

{

   211

	int i;

   212

   213

	if ((~_valid_tileh_slopes[0][tileh] & bits) == 0)

   214

		return 0;

   215

   216

	if ((~_valid_tileh_slopes[1][tileh] & bits) == 0)

   217

		return tileh;

   218

   219

	if ( ((i=0, tileh == 1) || (i+=2, tileh == 2) || (i+=2, tileh == 4) || (i+=2, tileh == 8)) && (bits == RAIL_BIT_DIAG1 || (i++, bits == RAIL_BIT_DIAG2)))

   220

		return i + 15;

   221

   222

	return 0;

   223

}

   224

   225

//

   226

static uint32 CheckRailSlope(int tileh, uint rail_bits, uint existing, uint tile)

   227

{

   228

	// never allow building on top of steep tiles

   229

	if (!(tileh & 0x10)) {

   230

		rail_bits |= existing;

   231

   232

		// don't allow building on the lower side of a coast

   233

		if (IS_TILETYPE(tile, MP_WATER) && ~_valid_tileh_slopes[2][tileh] & rail_bits) {

   234

			return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);

   235

		}

   236

   237

		// no special foundation

   238

		if ((~_valid_tileh_slopes[0][tileh] & rail_bits) == 0)

   239

			return 0;

   240

   241

		if (((~_valid_tileh_slopes[1][tileh] & rail_bits) == 0) || // whole tile is leveled up

   242

			((rail_bits == RAIL_BIT_DIAG1 || rail_bits == RAIL_BIT_DIAG2) && (tileh == 1 || tileh == 2 || tileh == 4 || tileh == 8))) { // partly up

   243

			return existing ? 0 : _price.terraform;

   244

		}

   245

	}

   246

	return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);

   247

}

   248

   249

/* Build a single track.

   250

 * p1 - railroad type normal/maglev

   251

 * p2 - tile direction

   252

 */

   253

   254

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

   255

{

   256

	TileInfo ti;

   257

	int32 ret, cost = 0;

   258

	byte rail_bit = 1 << p2;

   259

	byte rail_type = (byte)(p1 & 0xF);

   260

	uint tile;

   261

	byte existing = 0;

   262

	bool need_clear = false;

   263

   264

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   265

   266

	_error_message = STR_1007_ALREADY_BUILT;

   267

   268

	FindLandscapeHeight(&ti, x, y);

   269

	tile = ti.tile;

   270

   271

	// allow building rail under bridge

   272

	if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile))

   273

		return CMD_ERROR;

   274

   275

	if (ti.type == MP_TUNNELBRIDGE) {

   276

/* BUILD ON BRIDGE CODE */

   277

		if (!EnsureNoVehicleZ(tile, GET_TILEHEIGHT(tile)))

   278

			return CMD_ERROR;

   279

   280

		if ((ti.map5 & 0xF8) == 0xC0) {

   281

			if (ti.tileh & 0x10 || rail_bit != (byte)((ti.map5 & 1) ? 1 : 2)) goto need_clear;

   282

   283

			if (!(flags & DC_EXEC))

   284

				return _price.build_rail;

   285

   286

			_map5[tile] = (ti.map5 & 0xC7) | 0x20;

   287

			goto set_ownership;

   288

		} else if ((ti.map5 & 0xF8) == 0xE0) {

   289

			if ((_map3_lo[tile] & 0xF) != (int)p1) goto need_clear;

   290

			if (rail_bit != (byte)((ti.map5 & 1) ? 1 : 2)) goto need_clear;

   291

			return CMD_ERROR;

   292

		} else

   293

			goto need_clear;

   294

	} else if (ti.type == MP_STREET) {

   295

		byte m5;

   296

/* BUILD ON STREET CODE */

   297

		if (ti.tileh & 0x10) // very steep tile

   298

				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);

   299

   300

		if (!_valid_tileh_slopes[3][ti.tileh]) // prevent certain slopes

   301

				return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);

   302

   303

		if (!(ti.map5 & 0xF0)) {

   304

			if ((ti.map5 & 0x0F) == 0xA) {

   305

				if (rail_bit != 2) goto need_clear;

   306

				m5 = 0x10;

   307

			} else if ((ti.map5 & 0x0F) == 0x5) {

   308

				if (rail_bit != 1) goto need_clear;

   309

				m5 = 0x18;

   310

			} else

   311

				goto need_clear;

   312

   313

			if (!(flags & DC_EXEC))

   314

				return _price.build_rail;

   315

   316

			ModifyTile(tile,

   317

				MP_SETTYPE(MP_STREET) |

   318

				MP_MAP3LO | MP_MAP3HI | MP_MAPOWNER_CURRENT | MP_MAP5,

   319

				_map_owner[tile], /* map3_lo */

   320

				p1, /* map3_hi */

   321

				m5  /* map5 */

   322

			);

   323

			goto fix_signals;

   324

		} else if (!(ti.map5 & 0xE0)) {

   325

			if (rail_bit != (byte)((ti.map5 & 8) ? 1 : 2)) goto need_clear;

   326

			return CMD_ERROR;

   327

		} else

   328

			goto need_clear;

   329

	} else if (ti.type == MP_RAILWAY) {

   330

   331

/* BUILD ON RAILWAY CODE */

   332

		if (_map_owner[tile] != _current_player || (byte)(_map3_lo[tile]&0xF) != rail_type)

   333

			goto need_clear;

   334

		if (!CheckTrackCombination(ti.map5, rail_bit, (byte)flags))

   335

			return CMD_ERROR;

   336

   337

		existing = ti.map5 & 0x3F;

   338

	} else {

   339

   340

/* DEFAULT BUILD ON CODE */

   341

need_clear:;

   342

		/* isnot_railway */

   343

		if (!(flags & DC_EXEC)) {

   344

			ret = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   345

			if (ret == CMD_ERROR) return CMD_ERROR;

   346

			cost += ret;

   347

		}

   348

		need_clear = true;

   349

	}

   350

   351

	ret = CheckRailSlope(ti.tileh, rail_bit, existing, tile);

   352

	if (ret & 0x80000000)

   353

		return ret;

   354

	cost += ret;

   355

   356

	// the AI is not allowed to used foundationed tiles.

   357

	if (ret && (!_patches.build_on_slopes || (!_patches.ainew_active && _is_ai_player)))

   358

		return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);

   359

   360

	if (flags & DC_EXEC && need_clear) {

   361

		ret = DoCommandByTile(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   362

		if (ret == CMD_ERROR) return CMD_ERROR;

   363

		cost += ret;

   364

	}

   365

   366

	if (flags & DC_EXEC) {

   367

		_map_type_and_height[tile] &= 0xF;

   368

		_map_type_and_height[tile] |= MP_RAILWAY << 4;

   369

		_map5[tile] |= rail_bit;

   370

		_map2[tile] &= ~RAIL_MAP2LO_GROUND_MASK;

   371

   372

		// In case it's a tile without signals, clear the signal bits. Why?

   373

		if ((_map5[tile] & RAIL_TYPE_MASK) != RAIL_TYPE_SIGNALS)

   374

			_map2[tile] &= ~0xF0;

   375

   376

set_ownership:

   377

		_map_owner[tile] = _current_player;

   378

   379

		_map3_lo[tile] &= ~0xF;

   380

		_map3_lo[tile] |= rail_type;

   381

   382

		MarkTileDirtyByTile(tile);

   383

   384

fix_signals:

   385

		SetSignalsOnBothDir(tile, (byte)p2);

   386

	}

   387

   388

	return cost + _price.build_rail;

   389

}

   390

   391

static const byte _signals_table[] = {

   392

	0x40, 0x40, 0x40, 0x10, 0x80, 0x20, 0, 0, // direction 1

   393

	0x80, 0x80, 0x80, 0x20, 0x40, 0x10, 0, 0  // direction 2

   394

};

   395

   396

static const byte _signals_table_other[] = {

   397

	0x80, 0x80, 0x80, 0x20, 0x40, 0x10, 0, 0, // direction 1

   398

	0x40, 0x40, 0x40, 0x10, 0x80, 0x20, 0, 0  // direction 2

   399

};

   400

   401

static const byte _signals_table_both[] = {

   402

	0xC0, 0xC0, 0xC0, 0x30, 0xC0, 0x30, 0, 0,	// both directions combined

   403

	0xC0, 0xC0, 0xC0, 0x30, 0xC0, 0x30, 0, 0

   404

};

   405

   406

   407

/* Remove a single track.

   408

 * p1 - unused

   409

 * p2 - tile direction

   410

 */

   411

   412

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

   413

{

   414

	TileInfo ti;

   415

	byte rail_bit = 1 << p2;

   416

	byte m5;

   417

	uint tile;

   418

   419

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   420

   421

	FindLandscapeHeight(&ti, x, y);

   422

   423

	tile = ti.tile;

   424

   425

	if (!((1<<ti.type) & ((1<<MP_TUNNELBRIDGE)|(1<<MP_STREET)|(1<<MP_RAILWAY))))

   426

		return CMD_ERROR;

   427

   428

	if (_current_player != OWNER_WATER && !CheckTileOwnership(tile))

   429

		return CMD_ERROR;

   430

   431

	// allow building rail under bridge

   432

	if (ti.type != MP_TUNNELBRIDGE && !EnsureNoVehicle(tile))

   433

		return CMD_ERROR;

   434

   435

	if (ti.type == MP_TUNNELBRIDGE) {

   436

		if (!EnsureNoVehicleZ(tile, GET_TILEHEIGHT(tile)))

   437

			return CMD_ERROR;

   438

   439

		if ((ti.map5 & 0xF8) != 0xE0)

   440

			return CMD_ERROR;

   441

   442

		if ( ((ti.map5 & 1) ? 1 : 2) != rail_bit )

   443

			return CMD_ERROR;

   444

   445

		if (!(flags & DC_EXEC))

   446

			return _price.remove_rail;

   447

   448

		_map_owner[tile] = OWNER_NONE;

   449

		_map5[tile] = ti.map5 & 0xC7;

   450

	} else if (ti.type == MP_STREET) {

   451

		if (!(ti.map5 & 0xF0))

   452

			return CMD_ERROR;

   453

   454

		if (ti.map5 & 0xE0)

   455

			return CMD_ERROR;

   456

   457

		if (ti.map5 & 8) {

   458

			m5 = 5;

   459

			if (rail_bit != 1)

   460

				return CMD_ERROR;

   461

		} else {

   462

			m5 = 10;

   463

			if (rail_bit != 2)

   464

				return CMD_ERROR;

   465

		}

   466

   467

		if (!(flags & DC_EXEC))

   468

			return _price.remove_rail;

   469

   470

		_map5[tile] = m5;

   471

		_map_owner[tile] = _map3_lo[tile];

   472

		_map2[tile] = 0;

   473

	} else {

   474

		assert(ti.type == MP_RAILWAY);

   475

   476

		if (ti.map5 & RAIL_TYPE_SPECIAL)

   477

			return CMD_ERROR;

   478

   479

		if (!(ti.map5 & rail_bit))

   480

			return CMD_ERROR;

   481

   482

		// don't allow remove if there are signals on the track

   483

		if (ti.map5 & RAIL_TYPE_SIGNALS) {

   484

			if (_map3_lo[tile] & _signals_table_both[p2])

   485

				return CMD_ERROR;

   486

		}

   487

   488

		if (!(flags & DC_EXEC))

   489

			return _price.remove_rail;

   490

   491

		if ( (_map5[tile] ^= rail_bit) == 0) {

   492

			DoClearSquare(tile);

   493

			goto skip_mark_dirty;

   494

		}

   495

	}

   496

   497

	/* mark_dirty */

   498

	MarkTileDirtyByTile(tile);

   499

   500

skip_mark_dirty:;

   501

   502

	SetSignalsOnBothDir(tile, (byte)p2);

   503

   504

	return _price.remove_rail;

   505

}

   506

   507

static const struct {

   508

	int8 xinc[16];

   509

	int8 yinc[16];

   510

	byte initial[16];

   511

} _railbit = {{

   512

//  0   1   2    3   4   5

   513

	 16,  0,-16,   0, 16,  0,    0,  0,

   514

	-16,  0,  0,  16,  0,-16,    0,  0,

   515

},{

   516

	0,   16,  0,  16,  0, 16,    0,  0,

   517

	0,  -16, -16,  0,-16,  0,    0,  0,

   518

},{

   519

	5,  1, 0,4, // normal

   520

	2,  1, 8,3, // x > sx

   521

	10, 9, 0,11, // y > sy