1

/* $Id$ */

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#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "clear_map.h"

     6

#include "table/strings.h"

     7

#include "functions.h"

     8

#include "map.h"

     9

#include "player.h"

    10

#include "tile.h"

    11

#include "viewport.h"

    12

#include "command.h"

    13

#include "tunnel_map.h"

    14

#include "variables.h"

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#include "table/sprites.h"

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#include "unmovable_map.h"

    17

    18

typedef struct TerraformerHeightMod {

    19

	TileIndex tile;

    20

	byte height;

    21

} TerraformerHeightMod;

    22

    23

typedef struct TerraformerState {

    24

	int height[4];

    25

	uint32 flags;

    26

    27

	int direction;

    28

	int modheight_count;

    29

	int tile_table_count;

    30

    31

	int32 cost;

    32

    33

	TileIndex *tile_table;

    34

	TerraformerHeightMod *modheight;

    35

    36

} TerraformerState;

    37

    38

static int TerraformAllowTileProcess(TerraformerState *ts, TileIndex tile)

    39

{

    40

	TileIndex *t;

    41

	int count;

    42

    43

	if (TileX(tile) == MapMaxX() || TileY(tile) == MapMaxY()) return -1;

    44

    45

	t = ts->tile_table;

    46

	for (count = ts->tile_table_count; count != 0; count--, t++) {

    47

		if (*t == tile) return 0;

    48

	}

    49

    50

	return 1;

    51

}

    52

    53

static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)

    54

{

    55

	TerraformerHeightMod *mod = ts->modheight;

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	int count;

    57

    58

	for (count = ts->modheight_count; count != 0; count--, mod++) {

    59

		if (mod->tile == tile) return mod->height;

    60

	}

    61

    62

	return TileHeight(tile);

    63

}

    64

    65

static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)

    66

{

    67

	int count;

    68

	TileIndex *t;

    69

    70

	count = ts->tile_table_count;

    71

    72

	if (count >= 625) return;

    73

    74

	for (t = ts->tile_table; count != 0; count--,t++) {

    75

		if (*t == tile) return;

    76

	}

    77

    78

	ts->tile_table[ts->tile_table_count++] = tile;

    79

}

    80

    81

static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)

    82

{

    83

	TerraformAddDirtyTile(ts, tile + TileDiffXY( 0, -1));

    84

	TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, -1));

    85

	TerraformAddDirtyTile(ts, tile + TileDiffXY(-1,  0));

    86

	TerraformAddDirtyTile(ts, tile);

    87

}

    88

    89

static int TerraformProc(TerraformerState *ts, TileIndex tile, int mode)

    90

{

    91

	int r;

    92

    93

	assert(tile < MapSize());

    94

    95

	if ((r=TerraformAllowTileProcess(ts, tile)) <= 0)

    96

		return r;

    97

    98

	if (!IsTileType(tile, MP_RAILWAY)) {

    99

		int32 ret = DoCommand(tile, 0,0, ts->flags & ~DC_EXEC, CMD_LANDSCAPE_CLEAR);

   100

   101

		if (CmdFailed(ret)) {

   102

			_terraform_err_tile = tile;

   103

			return -1;

   104

		}

   105

   106

		ts->cost += ret;

   107

	}

   108

   109

	if (ts->tile_table_count >= 625) return -1;

   110

	ts->tile_table[ts->tile_table_count++] = tile;

   111

   112

	return 0;

   113

}

   114

   115

static bool TerraformTileHeight(TerraformerState *ts, TileIndex tile, int height)

   116

{

   117

	int nh;

   118

	TerraformerHeightMod *mod;

   119

	int count;

   120

   121

	assert(tile < MapSize());

   122

   123

	if (height < 0) {

   124

		_error_message = STR_1003_ALREADY_AT_SEA_LEVEL;

   125

		return false;

   126

	}

   127

   128

	_error_message = STR_1004_TOO_HIGH;

   129

   130

	if (height > 15) return false;

   131

   132

	nh = TerraformGetHeightOfTile(ts, tile);

   133

	if (nh < 0 || height == nh) return false;

   134

   135

	if (TerraformProc(ts, tile, 0) < 0) return false;

   136

	if (TerraformProc(ts, tile + TileDiffXY( 0, -1), 1) < 0) return false;

   137

	if (TerraformProc(ts, tile + TileDiffXY(-1, -1), 2) < 0) return false;

   138

	if (TerraformProc(ts, tile + TileDiffXY(-1,  0), 3) < 0) return false;

   139

   140

	mod = ts->modheight;

   141

	count = ts->modheight_count;

   142

   143

	for (;;) {

   144

		if (count == 0) {

   145

			if (ts->modheight_count >= 576)

   146

				return false;

   147

			ts->modheight_count++;

   148

			break;

   149

		}

   150

		if (mod->tile == tile) break;

   151

		mod++;

   152

		count--;

   153

	}

   154

   155

	mod->tile = tile;

   156

	mod->height = (byte)height;

   157

   158

	ts->cost += _price.terraform;

   159

   160

	{

   161

		int direction = ts->direction, r;

   162

		const TileIndexDiffC *ttm;

   163

   164

		static const TileIndexDiffC _terraform_tilepos[] = {

   165

			{ 1,  0},

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			{-2,  0},

   167

			{ 1,  1},

   168

			{ 0, -2}

   169

		};

   170

   171

		for (ttm = _terraform_tilepos; ttm != endof(_terraform_tilepos); ttm++) {

   172

			tile += ToTileIndexDiff(*ttm);

   173

   174

			r = TerraformGetHeightOfTile(ts, tile);

   175

			if (r != height && r-direction != height && r+direction != height) {

   176

				if (!TerraformTileHeight(ts, tile, r+direction))

   177

					return false;

   178

			}

   179

		}

   180

	}

   181

   182

	return true;

   183

}

   184

   185

/** Terraform land

   186

 * @param tile tile to terraform

   187

 * @param p1 corners to terraform.

   188

 * @param p2 direction; eg up or down

   189

 */

   190

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

   191

{

   192

	TerraformerState ts;

   193

	int direction;

   194

   195

	TerraformerHeightMod modheight_data[576];

   196

	TileIndex tile_table_data[625];

   197

   198

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   199

   200

	_terraform_err_tile = 0;

   201

   202

	ts.direction = direction = p2 ? 1 : -1;

   203

	ts.flags = flags;

   204

	ts.modheight_count = ts.tile_table_count = 0;

   205

	ts.cost = 0;

   206

	ts.modheight = modheight_data;

   207

	ts.tile_table = tile_table_data;

   208

   209

	/* Make an extra check for map-bounds cause we add tiles to the originating tile */

   210

	if (tile + TileDiffXY(1, 1) >= MapSize()) return CMD_ERROR;

   211

   212

	if (p1 & 1) {

   213

		if (!TerraformTileHeight(&ts, tile + TileDiffXY(1, 0),

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				TileHeight(tile + TileDiffXY(1, 0)) + direction))

   215

					return CMD_ERROR;

   216

	}

   217

   218

	if (p1 & 2) {

   219

		if (!TerraformTileHeight(&ts, tile + TileDiffXY(1, 1),

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				TileHeight(tile + TileDiffXY(1, 1)) + direction))

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					return CMD_ERROR;

   222

	}

   223

   224

	if (p1 & 4) {

   225

		if (!TerraformTileHeight(&ts, tile + TileDiffXY(0, 1),

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				TileHeight(tile + TileDiffXY(0, 1)) + direction))

   227

					return CMD_ERROR;

   228

	}

   229

   230

	if (p1 & 8) {

   231

		if (!TerraformTileHeight(&ts, tile + TileDiffXY(0, 0),

   232

				TileHeight(tile + TileDiffXY(0, 0)) + direction))

   233

					return CMD_ERROR;

   234

	}

   235

   236

	{ /* Check if tunnel or track would take damage */

   237

		int count;

   238

		TileIndex *ti = ts.tile_table;

   239

   240

		for (count = ts.tile_table_count; count != 0; count--, ti++) {

   241

			uint a, b, c, d, r, min;

   242

			TileIndex tile = *ti;

   243

   244

			_terraform_err_tile = tile;

   245

   246

			a = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 0));

   247

			b = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 0));

   248

			c = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 1));

   249

			d = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 1));

   250

   251

			r = GetTileh(a, b, c, d, &min);

   252

   253

			if (IsTileType(tile, MP_RAILWAY)) {

   254

				if (IsSteepSlope(r)) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);

   255

   256

				if (IsPlainRailTile(tile)) {

   257

					extern const TrackBits _valid_tileh_slopes[2][15];

   258

					if (GetTrackBits(tile) & ~_valid_tileh_slopes[0][r]) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);

   259

				} else return_cmd_error(STR_5800_OBJECT_IN_THE_WAY);

   260

			}

   261

   262

			if (direction == -1 && IsTunnelInWay(tile, min)) return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);

   263

   264

			_terraform_err_tile = 0;

   265

		}

   266

	}

   267

   268

	if (flags & DC_EXEC) {

   269

		/* Clear the landscape at the tiles */

   270

		{

   271

			int count;

   272

			TileIndex *ti = ts.tile_table;

   273

			for (count = ts.tile_table_count; count != 0; count--, ti++) {

   274

				DoCommand(*ti, 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   275

			}

   276

		}

   277

   278

		/* change the height */

   279

		{

   280

			int count;

   281

			TerraformerHeightMod *mod;

   282

   283

			mod = ts.modheight;

   284

			for (count = ts.modheight_count; count != 0; count--, mod++) {

   285

				TileIndex til = mod->tile;

   286

   287

				SetTileHeight(til, mod->height);

   288

				TerraformAddDirtyTileAround(&ts, til);

   289

			}

   290

		}

   291

   292

		/* finally mark the dirty tiles dirty */

   293

		{

   294

			int count;

   295

			TileIndex *ti = ts.tile_table;

   296

			for (count = ts.tile_table_count; count != 0; count--, ti++) {

   297

				MarkTileDirtyByTile(*ti);

   298

			}

   299

		}

   300

	}

   301

	return ts.cost;

   302

}

   303

   304

   305

/** Levels a selected (rectangle) area of land

   306

 * @param tile end tile of area-drag

   307

 * @param p1 start tile of area drag

   308

 * @param p2 unused

   309

 */

   310

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

   311

{

   312

	int size_x, size_y;

   313

	int ex;

   314

	int ey;

   315

	int sx, sy;

   316

	uint h, curh;

   317

	int32 ret, cost, money;

   318

   319

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

   320

   321

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   322

   323

	// remember level height

   324

	h = TileHeight(p1);

   325

   326

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

   327

	ex = TileX(tile);

   328

	ey = TileY(tile);

   329

	sx = TileX(p1);

   330

	sy = TileY(p1);

   331

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

   332

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

   333

	tile = TileXY(sx, sy);

   334

   335

	size_x = ex-sx+1;

   336

	size_y = ey-sy+1;

   337

   338

	money = GetAvailableMoneyForCommand();

   339

	cost = 0;

   340

   341

	BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {

   342

		curh = TileHeight(tile2);

   343

		while (curh != h) {

   344

			ret = DoCommand(tile2, 8, (curh > h) ? 0 : 1, flags & ~DC_EXEC, CMD_TERRAFORM_LAND);

   345

			if (CmdFailed(ret)) break;

   346

			cost += ret;

   347

   348

			if (flags & DC_EXEC) {

   349

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

   350

					_additional_cash_required = ret;

   351

					return cost - ret;

   352

				}

   353

				DoCommand(tile2, 8, (curh > h) ? 0 : 1, flags, CMD_TERRAFORM_LAND);

   354

			}

   355

   356

			curh += (curh > h) ? -1 : 1;

   357

		}

   358

	} END_TILE_LOOP(tile2, size_x, size_y, tile)

   359

   360

	return (cost == 0) ? CMD_ERROR : cost;

   361

}

   362

   363

/** Purchase a land area. Actually you only purchase one tile, so

   364

 * the name is a bit confusing ;p

   365

 * @param tile the tile the player is purchasing

   366

 * @param p1 unused

   367

 * @param p2 unused

   368

 */

   369

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

   370

{

   371

	int32 cost;

   372

   373

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   374

   375

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   376

   377

	if (IsOwnedLandTile(tile) && IsTileOwner(tile, _current_player)) {

   378

		return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);

   379

	}

   380

   381

	cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);

   382

	if (CmdFailed(cost)) return CMD_ERROR;

   383

   384

	if (flags & DC_EXEC) {

   385

		MakeOwnedLand(tile, _current_player);

   386

		MarkTileDirtyByTile(tile);

   387

	}

   388

   389

	return cost + _price.purchase_land * 10;

   390

}

   391

   392

   393

static int32 ClearTile_Clear(TileIndex tile, byte flags)

   394

{

   395

	static const int32* clear_price_table[] = {

   396

		&_price.clear_1,

   397

		&_price.purchase_land,

   398

		&_price.clear_2,

   399

		&_price.clear_3,

   400

		&_price.purchase_land,

   401

		&_price.purchase_land,

   402

		&_price.clear_2, // XXX unused?

   403

	};

   404

	int32 price;

   405

   406

	if (IsClearGround(tile, CLEAR_GRASS) && GetClearDensity(tile) == 0) {

   407

		price = 0;

   408

	} else {

   409

		price = *clear_price_table[GetClearGround(tile)];

   410

	}

   411

   412

	if (flags & DC_EXEC) DoClearSquare(tile);

   413

   414

	return price;

   415

}

   416

   417

/** Sell a land area. Actually you only sell one tile, so

   418

 * the name is a bit confusing ;p

   419

 * @param tile the tile the player is selling

   420

 * @param p1 unused

   421

 * @param p2 unused

   422

 */

   423

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

   424

{

   425

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   426

   427

	if (!IsOwnedLandTile(tile)) return CMD_ERROR;

   428

	if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) return CMD_ERROR;

   429

   430

   431

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   432

   433

	if (flags & DC_EXEC)

   434

		DoClearSquare(tile);

   435

   436

	return - _price.purchase_land * 2;

   437

}

   438

   439

   440

#include "table/clear_land.h"

   441

   442

   443

void DrawClearLandTile(const TileInfo *ti, byte set)

   444

{

   445

	DrawGroundSprite(SPR_FLAT_BARE_LAND + _tileh_to_sprite[ti->tileh] + set * 19);

   446

}

   447

   448

void DrawHillyLandTile(const TileInfo *ti)

   449

{

   450

	if (ti->tileh != SLOPE_FLAT) {

   451

		DrawGroundSprite(SPR_FLAT_ROUGH_LAND + _tileh_to_sprite[ti->tileh]);

   452

	} else {

   453

		DrawGroundSprite(_landscape_clear_sprites[GB(ti->x ^ ti->y, 4, 3)]);

   454

	}

   455

}

   456

   457

void DrawClearLandFence(const TileInfo *ti)

   458

{

   459

	byte z = ti->z;

   460

   461

	if (ti->tileh & SLOPE_S) {

   462

		z += TILE_HEIGHT;

   463

		if (ti->tileh == SLOPE_STEEP_S) z += TILE_HEIGHT;

   464

	}

   465

   466

	if (GetFenceSW(ti->tile) != 0) {

   467

		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GetFenceSW(ti->tile) - 1] + _fence_mod_by_tileh[ti->tileh], ti->x, ti->y, z);

   468

	}

   469

   470

	if (GetFenceSE(ti->tile) != 0) {

   471

		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GetFenceSE(ti->tile) - 1] + _fence_mod_by_tileh_2[ti->tileh], ti->x, ti->y, z);

   472

	}

   473

}

   474

   475

static void DrawTile_Clear(TileInfo *ti)

   476

{

   477

	switch (GetClearGround(ti->tile)) {

   478

		case CLEAR_GRASS:

   479

			DrawClearLandTile(ti, GetClearDensity(ti->tile));

   480

			break;

   481

   482

		case CLEAR_ROUGH:

   483

			DrawHillyLandTile(ti);

   484

			break;

   485

   486

		case CLEAR_ROCKS:

   487

			DrawGroundSprite(SPR_FLAT_ROCKY_LAND_1 + _tileh_to_sprite[ti->tileh]);

   488

			break;

   489

   490

		case CLEAR_FIELDS:

   491

			DrawGroundSprite(_clear_land_sprites_1[GetFieldType(ti->tile)] + _tileh_to_sprite[ti->tileh]);

   492

			break;

   493

   494

		case CLEAR_SNOW:

   495

			DrawGroundSprite(_clear_land_sprites_2[GetClearDensity(ti->tile)] + _tileh_to_sprite[ti->tileh]);

   496

			break;

   497

   498

		case CLEAR_DESERT:

   499

			DrawGroundSprite(_clear_land_sprites_3[GetClearDensity(ti->tile)] + _tileh_to_sprite[ti->tileh]);