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;

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    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

}

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    54

static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)

    55

{

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	TerraformerHeightMod *mod = ts->modheight;

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	int count;

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    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

}

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    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));

    86

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

    87

	TerraformAddDirtyTile(ts, tile);

    88

}

    89

    90

static int TerraformProc(TerraformerState *ts, TileIndex tile)

    91

{

    92

	int r;

    93

    94

	assert(tile < MapSize());

    95

    96

	if ((r = TerraformAllowTileProcess(ts, tile)) <= 0) 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) return false;

   136

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

   137

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

   138

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

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			ts->modheight_count++;

   147

			break;

   148

		}

   149

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

   150

		mod++;

   151

		count--;

   152

	}

   153

   154

	mod->tile = tile;

   155

	mod->height = (byte)height;

   156

   157

	ts->cost += _price.terraform;

   158

   159

	{

   160

		int direction = ts->direction, r;

   161

		const TileIndexDiffC *ttm;

   162

   163

		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}

   168

		};

   169

   170

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

   171

			tile += ToTileIndexDiff(*ttm);

   172

   173

			r = TerraformGetHeightOfTile(ts, tile);

   174

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

   175

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

   176

					return false;

   177

			}

   178

		}

   179

	}

   180

   181

	return true;

   182

}

   183

   184

/** Terraform land

   185

 * @param tile tile to terraform

   186

 * @param p1 corners to terraform.

   187

 * @param p2 direction; eg up or down

   188

 */

   189

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

   190

{

   191

	TerraformerState ts;

   192

	TileIndex t;

   193

	int direction;

   194

   195

	TerraformerHeightMod modheight_data[576];

   196

	TileIndex tile_table_data[625];

   197

   198

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

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   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

		t = tile + TileDiffXY(1, 0);

   214

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

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			return CMD_ERROR;

   216

		}

   217

	}

   218

   219

	if (p1 & 2) {

   220

		t = tile + TileDiffXY(1, 1);

   221

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

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			return CMD_ERROR;

   223

		}

   224

	}

   225

   226

	if (p1 & 4) {

   227

		t = tile + TileDiffXY(0, 1);

   228

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

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			return CMD_ERROR;

   230

		}

   231

	}

   232

   233

	if (p1 & 8) {

   234

		t = tile + TileDiffXY(0, 0);

   235

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

   236

			return CMD_ERROR;

   237

		}

   238

	}

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   240

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

   241

		int count;

   242

		TileIndex *ti = ts.tile_table;

   243

   244

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

   245

			uint a, b, c, d, min;

   246

			Slope s;

   247

			TileIndex tile = *ti;

   248

   249

			_terraform_err_tile = tile;

   250

   251

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

   252

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

   253

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

   254

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

   255

   256

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

   257

   258

			if (IsTileType(tile, MP_RAILWAY)) {

   259

				if (IsSteepSlope(s)) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);

   260

   261

				if (IsPlainRailTile(tile)) {

   265

					extern const TrackBits _valid_tileh_slopes[2][15];

   266

					TrackBits tb = GetTrackBits(tile);

   267

   270

				} else return_cmd_error(STR_5800_OBJECT_IN_THE_WAY);

   271

			}

   272

   273

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

   274

   275

			_terraform_err_tile = 0;

   276

		}

   277

	}

   278

   279

	if (flags & DC_EXEC) {

   280

		/* Clear the landscape at the tiles */

   281

		{

   282

			int count;

   283

			TileIndex *ti = ts.tile_table;

   284

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

   285

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

   286

			}

   287

		}

   288

   289

		/* change the height */

   290

		{

   291

			int count;

   292

			TerraformerHeightMod *mod;

   293

   294

			mod = ts.modheight;

   295

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

   296

				TileIndex til = mod->tile;

   297

   298

				SetTileHeight(til, mod->height);

   299

				TerraformAddDirtyTileAround(&ts, til);

   300

			}

   301

		}

   302

   303

		/* finally mark the dirty tiles dirty */

   304

		{

   305

			int count;

   306

			TileIndex *ti = ts.tile_table;

   307

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

   308

				MarkTileDirtyByTile(*ti);

   309

			}

   310

		}

   311

	}

   312

	return ts.cost;

   313

}

   314

   315

   316

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

   317

 * @param tile end tile of area-drag

   318

 * @param p1 start tile of area drag

   319

 * @param p2 unused

   320

 */

   321

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

   322

{

   323

	int size_x, size_y;

   324

	int ex;

   325

	int ey;

   326

	int sx, sy;

   327

	uint h, curh;

   328

	int32 ret, cost, money;

   329

   330

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

   331

   332

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   333

   334

	// remember level height

   335

	h = TileHeight(p1);

   336

   337

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

   338

	ex = TileX(tile);

   339

	ey = TileY(tile);

   340

	sx = TileX(p1);

   341

	sy = TileY(p1);

   342

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

   343

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

   344

	tile = TileXY(sx, sy);

   345

   346

	size_x = ex-sx+1;

   347

	size_y = ey-sy+1;

   348

   349

	money = GetAvailableMoneyForCommand();

   350

	cost = 0;

   351

   352

	BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {

   353

		curh = TileHeight(tile2);

   354

		while (curh != h) {

   355

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

   356

			if (CmdFailed(ret)) break;

   357

			cost += ret;

   358

   359

			if (flags & DC_EXEC) {

   360

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

   361

					_additional_cash_required = ret;

   362

					return cost - ret;

   363

				}

   364

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

   365

			}

   366

   367

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

   368

		}

   369

	} END_TILE_LOOP(tile2, size_x, size_y, tile)

   370

   371

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

   372

}

   373

   374

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

   375

 * the name is a bit confusing ;p

   376

 * @param tile the tile the player is purchasing

   377

 * @param p1 unused

   378

 * @param p2 unused

   379

 */

   380

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

   381

{

   382

	int32 cost;

   383

   384

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   385

   386

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   387

   388

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

   389

		return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);

   390

	}

   391

   392

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

   393

	if (CmdFailed(cost)) return CMD_ERROR;

   394

   395

	if (flags & DC_EXEC) {

   396

		MakeOwnedLand(tile, _current_player);

   397

		MarkTileDirtyByTile(tile);

   398

	}

   399

   400

	return cost + _price.purchase_land * 10;

   401

}

   402

   403

   404

static int32 ClearTile_Clear(TileIndex tile, byte flags)

   405

{

   406

	static const int32* clear_price_table[] = {

   407

		&_price.clear_1,

   408

		&_price.purchase_land,

   409

		&_price.clear_2,

   410

		&_price.clear_3,

   411

		&_price.purchase_land,

   412

		&_price.purchase_land,

   413

		&_price.clear_2, // XXX unused?

   414

	};

   415

	int32 price;

   416

   417

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

   418

		price = 0;

   419

	} else {

   420

		price = *clear_price_table[GetClearGround(tile)];

   421

	}

   422

   423

	if (flags & DC_EXEC) DoClearSquare(tile);

   424

   425

	return price;

   426

}

   427

   428

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

   429

 * the name is a bit confusing ;p

   430

 * @param tile the tile the player is selling

   431

 * @param p1 unused

   432

 * @param p2 unused

   433

 */

   434

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

   435

{

   436

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   437

   438

	if (!IsOwnedLandTile(tile)) return CMD_ERROR;

   439

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

   440

   441

   442

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   443

   444

	if (flags & DC_EXEC) DoClearSquare(tile);

   445

   446

	return - _price.purchase_land * 2;

   447

}

   448

   449

   450

#include "table/clear_land.h"

   451

   452

   453

void DrawClearLandTile(const TileInfo *ti, byte set)

   454

{

   455

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

   456

}

   457

   458

void DrawHillyLandTile(const TileInfo *ti)

   459

{

   460

	if (ti->tileh != SLOPE_FLAT) {

   461

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

   462

	} else {

   463

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

   464

	}

   465

}

   466

   467

void DrawClearLandFence(const TileInfo *ti)

   468

{

   469

	byte z = ti->z;

   470

   471

	if (ti->tileh & SLOPE_S) {

   472

		z += TILE_HEIGHT;

   473

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

   474

	}

   475

   476

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

   477

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

   478

	}

   479

   480

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

   481

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

   482

	}

   483

}

   484

   485

static void DrawTile_Clear(TileInfo *ti)

   486

{

   487

	switch (GetClearGround(ti->tile)) {

   488

		case CLEAR_GRASS:

   489

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

   490

			break;

   491

   492

		case CLEAR_ROUGH:

   493

			DrawHillyLandTile(ti);

   494

			break;

   495

   496

		case CLEAR_ROCKS:

   497

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

   498

			break;