1

/* $Id$ */

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#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "clear_map.h"

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#include "rail_map.h"

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#include "table/strings.h"

     8

#include "functions.h"

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#include "map.h"

    10

#include "player.h"

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#include "tile.h"

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#include "viewport.h"

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#include "command.h"

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#include "tunnel_map.h"

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#include "variables.h"

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#include "table/sprites.h"

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#include "unmovable_map.h"

    18

    19

typedef struct TerraformerHeightMod {

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	TileIndex tile;

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	byte height;

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} TerraformerHeightMod;

    23

    24

typedef struct TerraformerState {

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	int height[4];

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	uint32 flags;

    27

    28

	int direction;

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	int modheight_count;

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	int tile_table_count;

    31

    32

	int32 cost;

    33

    34

	TileIndex *tile_table;

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	TerraformerHeightMod *modheight;

    36

    37

} TerraformerState;

    38

    39

static int TerraformAllowTileProcess(TerraformerState *ts, TileIndex tile)

    40

{

    41

	TileIndex *t;

    42

	int count;

    43

    44

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

    45

    46

	t = ts->tile_table;

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

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		if (*t == tile) return 0;

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	}

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    51

	return 1;

    52

}

    53

    54

static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)

    55

{

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	TerraformerHeightMod *mod = ts->modheight;

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	int count;

    58

    59

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

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

    61

	}

    62

    63

	return TileHeight(tile);

    64

}

    65

    66

static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)

    67

{

    68

	int count;

    69

	TileIndex *t;

    70

    71

	count = ts->tile_table_count;

    72

    73

	if (count >= 625) return;

    74

    75

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

    76

		if (*t == tile) return;

    77

	}

    78

    79

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

    80

}

    81

    82

static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)

    83

{

    84

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

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

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

    87

	TerraformAddDirtyTile(ts, tile);

    88

}

    89

    90

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

    91

{

    92

	int r;

    93

	int32 ret;

    94

    95

	assert(tile < MapSize());

    96

    99

   100

	if (IsTileType(tile, MP_RAILWAY)) {

   103

   104

		// Nothing could be built at the steep slope - this avoids a bug

   105

		// when you have a single diagonal track in one corner on a

   106

		// basement and then you raise/lower the other corner.

   110

			_terraform_err_tile = tile;

   111

			_error_message = STR_1008_MUST_REMOVE_RAILROAD_TRACK;

   112

			return -1;

   113

		}

   114

   115

		// If we have a single diagonal track there, the other side of

   116

		// tile can be terraformed.

   118

			return 0;

   119

		}

   120

	}

   121

   122

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

   123

   124

	if (ret == CMD_ERROR) {

   125

		_terraform_err_tile = tile;

   126

		return -1;

   127

	}

   128

   129

	ts->cost += ret;

   130

   131

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

   132

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

   133

   134

	return 0;

   135

}

   136

   137

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

   138

{

   139

	int nh;

   140

	TerraformerHeightMod *mod;

   141

	int count;

   142

   143

	assert(tile < MapSize());

   144

   145

	if (height < 0) {

   146

		_error_message = STR_1003_ALREADY_AT_SEA_LEVEL;

   147

		return false;

   148

	}

   149

   150

	_error_message = STR_1004_TOO_HIGH;

   151

   152

	if (height > 15) return false;

   153

   154

	nh = TerraformGetHeightOfTile(ts, tile);

   155

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

   156

   157

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

   158

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

   159

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

   160

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

   161

   162

	mod = ts->modheight;

   163

	count = ts->modheight_count;

   164

   165

	for (;;) {

   166

		if (count == 0) {

   167

			if (ts->modheight_count >= 576) return false;

   168

			ts->modheight_count++;

   169

			break;

   170

		}

   171

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

   172

		mod++;

   173

		count--;

   174

	}

   175

   176

	mod->tile = tile;

   177

	mod->height = (byte)height;

   178

   179

	ts->cost += _price.terraform;

   180

   181

	{

   182

		int direction = ts->direction, r;

   183

		const TileIndexDiffC *ttm;

   184

   185

		static const TileIndexDiffC _terraform_tilepos[] = {

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			{ 1,  0},

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			{-2,  0},

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			{ 1,  1},

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			{ 0, -2}

   190

		};

   191

   192

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

   193

			tile += ToTileIndexDiff(*ttm);

   194

   195

			r = TerraformGetHeightOfTile(ts, tile);

   196

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

   197

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

   198

					return false;

   199

			}

   200

		}

   201

	}

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   203

	return true;

   204

}

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   206

/** Terraform land

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 * @param tile tile to terraform

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 * @param p1 corners to terraform.

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 * @param p2 direction; eg up or down

   210

 */

   211

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

   212

{

   213

	TerraformerState ts;

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	TileIndex t;

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	int direction;

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   217

	TerraformerHeightMod modheight_data[576];

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	TileIndex tile_table_data[625];

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   220

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

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   222

	_terraform_err_tile = 0;

   223

   224

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

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	ts.flags = flags;

   226

	ts.modheight_count = ts.tile_table_count = 0;

   227

	ts.cost = 0;

   228

	ts.modheight = modheight_data;

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	ts.tile_table = tile_table_data;

   230

   231

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

   232

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

   233

   234

	if (p1 & 1) {

   235

		t = tile + TileDiffXY(1, 0);

   236

		if (!TerraformTileHeight(&ts, t, TileHeight(t) + direction)) {

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			return CMD_ERROR;

   238

		}

   239

	}

   240

   241

	if (p1 & 2) {

   242

		t = tile + TileDiffXY(1, 1);

   243

		if (!TerraformTileHeight(&ts, t, TileHeight(t) + direction)) {

   244

			return CMD_ERROR;

   245

		}

   246

	}

   247

   248

	if (p1 & 4) {

   249

		t = tile + TileDiffXY(0, 1);

   250

		if (!TerraformTileHeight(&ts, t, TileHeight(t) + direction)) {

   251

			return CMD_ERROR;

   252

		}

   253

	}

   254

   255

	if (p1 & 8) {

   256

		t = tile + TileDiffXY(0, 0);

   257

		if (!TerraformTileHeight(&ts, t, TileHeight(t) + direction)) {

   258

			return CMD_ERROR;

   259

		}

   260

	}

   261

   262

	if (direction == -1) {

   263

		/* Check if tunnel would take damage */

   264

		int count;

   265

		TileIndex *ti = ts.tile_table;

   266

   267

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

   268

			uint z, t;

   269

			TileIndex tile = *ti;

   270

   271

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

   272

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

   273

			if (t <= z) z = t;

   274

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

   275

			if (t <= z) z = t;

   276

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

   277

			if (t <= z) z = t;

   278

   279

			if (IsTunnelInWay(tile, z * TILE_HEIGHT)) {

   280

				return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);

   281

			}

   282

		}

   283

	}

   284

   285

	if (flags & DC_EXEC) {

   286

		/* Clear the landscape at the tiles */

   287

		{

   288

			int count;

   289

			TileIndex *ti = ts.tile_table;

   290

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

   291

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

   292

			}

   293

		}

   294

   295

		/* change the height */

   296

		{

   297

			int count;

   298

			TerraformerHeightMod *mod;

   299

   300

			mod = ts.modheight;

   301

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

   302

				TileIndex til = mod->tile;

   303

   304

				SetTileHeight(til, mod->height);

   305

				TerraformAddDirtyTileAround(&ts, til);

   306

			}

   307

		}

   308

   309

		/* finally mark the dirty tiles dirty */

   310

		{

   311

			int count;

   312

			TileIndex *ti = ts.tile_table;

   313

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

   314

				MarkTileDirtyByTile(*ti);

   315

			}

   316

		}

   317

	}

   318

	return ts.cost;

   319

}

   320

   321

   322

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

   323

 * @param tile end tile of area-drag

   324

 * @param p1 start tile of area drag

   325

 * @param p2 unused

   326

 */

   327

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

   328

{

   329

	int size_x, size_y;

   330

	int ex;

   331

	int ey;

   332

	int sx, sy;

   333

	uint h, curh;

   334

	int32 ret, cost, money;

   335

   336

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

   337

   338

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   339

   340

	// remember level height

   341

	h = TileHeight(p1);

   342

   343

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

   344

	ex = TileX(tile);

   345

	ey = TileY(tile);

   346

	sx = TileX(p1);

   347

	sy = TileY(p1);

   348

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

   349

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

   350

	tile = TileXY(sx, sy);

   351

   352

	size_x = ex-sx+1;

   353

	size_y = ey-sy+1;

   354

   355

	money = GetAvailableMoneyForCommand();

   356

	cost = 0;

   357

   358

	BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {

   359

		curh = TileHeight(tile2);

   360

		while (curh != h) {

   361

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

   362

			if (CmdFailed(ret)) break;

   363

			cost += ret;

   364

   365

			if (flags & DC_EXEC) {

   366

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

   367

					_additional_cash_required = ret;

   368

					return cost - ret;

   369

				}

   370

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

   371

			}

   372

   373

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

   374

		}

   375

	} END_TILE_LOOP(tile2, size_x, size_y, tile)

   376

   377

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

   378

}

   379

   380

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

   381

 * the name is a bit confusing ;p

   382

 * @param tile the tile the player is purchasing

   383

 * @param p1 unused

   384

 * @param p2 unused

   385

 */

   386

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

   387

{

   388

	int32 cost;

   389

   390

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   391

   392

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   393

   394

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

   395

		return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);

   396

	}

   397

   398

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

   399

	if (CmdFailed(cost)) return CMD_ERROR;

   400

   401

	if (flags & DC_EXEC) {

   402

		MakeOwnedLand(tile, _current_player);

   403

		MarkTileDirtyByTile(tile);

   404

	}

   405

   406

	return cost + _price.purchase_land * 10;

   407

}

   408

   409

   410

static int32 ClearTile_Clear(TileIndex tile, byte flags)

   411

{

   412

	static const int32* clear_price_table[] = {

   413

		&_price.clear_1,

   414

		&_price.purchase_land,

   415

		&_price.clear_2,

   416

		&_price.clear_3,

   417

		&_price.purchase_land,

   418

		&_price.purchase_land,

   419

		&_price.clear_2, // XXX unused?

   420

	};

   421

	int32 price;

   422

   423

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

   424

		price = 0;

   425

	} else {

   426

		price = *clear_price_table[GetClearGround(tile)];

   427

	}

   428

   429

	if (flags & DC_EXEC) DoClearSquare(tile);

   430

   431

	return price;

   432

}

   433

   434

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

   435

 * the name is a bit confusing ;p

   436

 * @param tile the tile the player is selling

   437

 * @param p1 unused

   438

 * @param p2 unused

   439

 */

   440

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

   441

{

   442

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   443

   444

	if (!IsOwnedLandTile(tile)) return CMD_ERROR;

   445

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

   446

   447

   448

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   449

   450

	if (flags & DC_EXEC) DoClearSquare(tile);

   451

   452

	return - _price.purchase_land * 2;

   453

}

   454

   455

   456

#include "table/clear_land.h"

   457

   458

   459

void DrawClearLandTile(const TileInfo *ti, byte set)

   460

{

   461

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

   462

}

   463

   464

void DrawHillyLandTile(const TileInfo *ti)

   465

{

   466

	if (ti->tileh != SLOPE_FLAT) {

   467

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

   468

	} else {

   469

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

   470

	}

   471

}

   472

   473

void DrawClearLandFence(const TileInfo *ti)

   474

{

   475

	byte z = ti->z;

   476

   477

	if (ti->tileh & SLOPE_S) {

   478

		z += TILE_HEIGHT;

   479

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

   480

	}

   481

   482

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

   483

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

   484

	}

   485

   486

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

   487

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

   488

	}

   489

}

   490

   491

static void DrawTile_Clear(TileInfo *ti)

   492

{

   493

	switch (GetClearGround(ti->tile)) {

   494

		case CLEAR_GRASS:

   495

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

   496

			break;

   497

   498

		case CLEAR_ROUGH: