1

/* $Id$ */

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     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "table/strings.h"

     6

#include "functions.h"

     7

#include "map.h"

     8

#include "player.h"

     9

#include "tile.h"

    10

#include "viewport.h"

    11

#include "command.h"

    12

#include "variables.h"

    13

#include "table/sprites.h"

    14

    15

typedef struct TerraformerHeightMod {

    16

	TileIndex tile;

    17

	byte height;

    18

} TerraformerHeightMod;

    19

    20

typedef struct TerraformerState {

    21

	int height[4];

    22

	uint32 flags;

    23

    24

	int direction;

    25

	int modheight_count;

    26

	int tile_table_count;

    27

    28

	int32 cost;

    29

    30

	TileIndex *tile_table;

    31

	TerraformerHeightMod *modheight;

    32

    33

} TerraformerState;

    34

    35

static int TerraformAllowTileProcess(TerraformerState *ts, TileIndex tile)

    36

{

    37

	TileIndex *t;

    38

	int count;

    39

    40

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

    41

    42

	t = ts->tile_table;

    43

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

    44

		if (*t == tile) return 0;

    45

	}

    46

    47

	return 1;

    48

}

    49

    50

static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)

    51

{

    52

	TerraformerHeightMod *mod = ts->modheight;

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	int count;

    54

    55

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

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

    57

	}

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    59

	return TileHeight(tile);

    60

}

    61

    62

static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)

    63

{

    64

	int count;

    65

	TileIndex *t;

    66

    67

	count = ts->tile_table_count;

    68

    69

	if (count >= 625) return;

    70

    71

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

    72

		if (*t == tile) return;

    73

	}

    74

    75

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

    76

}

    77

    78

static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)

    79

{

    80

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

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

    82

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

    83

	TerraformAddDirtyTile(ts, tile);

    84

}

    85

    86

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

    87

{

    88

	int r;

    89

    90

	assert(tile < MapSize());

    91

    92

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

    93

		return r;

    94

    95

	if (!IsTileType(tile, MP_RAILWAY)) {

    96

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

    97

    98

		if (CmdFailed(ret)) {

    99

			_terraform_err_tile = tile;

   100

			return -1;

   101

		}

   102

   103

		ts->cost += ret;

   104

	}

   105

   106

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

   107

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

   108

   109

	return 0;

   110

}

   111

   112

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

   113

{

   114

	int nh;

   115

	TerraformerHeightMod *mod;

   116

	int count;

   117

   118

	assert(tile < MapSize());

   119

   120

	if (height < 0) {

   121

		_error_message = STR_1003_ALREADY_AT_SEA_LEVEL;

   122

		return false;

   123

	}

   124

   125

	_error_message = STR_1004_TOO_HIGH;

   126

   127

	if (height > 15) return false;

   128

   129

	nh = TerraformGetHeightOfTile(ts, tile);

   130

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

   131

   132

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

   133

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

   134

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

   135

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

   136

   137

	mod = ts->modheight;

   138

	count = ts->modheight_count;

   139

   140

	for (;;) {

   141

		if (count == 0) {

   142

			if (ts->modheight_count >= 576)

   143

				return false;

   144

			ts->modheight_count++;

   145

			break;

   146

		}

   147

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

   148

		mod++;

   149

		count--;

   150

	}

   151

   152

	mod->tile = tile;

   153

	mod->height = (byte)height;

   154

   155

	ts->cost += _price.terraform;

   156

   157

	{

   158

		int direction = ts->direction, r;

   159

		const TileIndexDiffC *ttm;

   160

   161

		static const TileIndexDiffC _terraform_tilepos[] = {

   162

			{ 1,  0},

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			{-2,  0},

   164

			{ 1,  1},

   165

			{ 0, -2}

   166

		};

   167

   168

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

   169

			tile += ToTileIndexDiff(*ttm);

   170

   171

			r = TerraformGetHeightOfTile(ts, tile);

   172

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

   173

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

   174

					return false;

   175

			}

   176

		}

   177

	}

   178

   179

	return true;

   180

}

   181

   182

/** Terraform land

   183

 * @param x,y coordinates to terraform

   184

 * @param p1 corners to terraform.

   185

 * @param p2 direction; eg up or down

   186

 */

   187

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

   188

{

   189

	TerraformerState ts;

   190

	TileIndex tile;

   191

	int direction;

   192

   193

	TerraformerHeightMod modheight_data[576];

   194

	TileIndex tile_table_data[625];

   195

   196

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   197

   198

	_error_message = INVALID_STRING_ID;

   199

	_terraform_err_tile = 0;

   200

   201

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

   202

	ts.flags = flags;

   203

	ts.modheight_count = ts.tile_table_count = 0;

   204

	ts.cost = 0;

   205

	ts.modheight = modheight_data;

   206

	ts.tile_table = tile_table_data;

   207

   208

	tile = TileVirtXY(x, y);

   209

   210

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

   211

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

   212

   213

	if (p1 & 1) {

   214

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

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

   216

					return CMD_ERROR;

   217

	}

   218

   219

	if (p1 & 2) {

   220

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

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

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					return CMD_ERROR;

   223

	}

   224

   225

	if (p1 & 4) {

   226

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

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

   228

					return CMD_ERROR;

   229

	}

   230

   231

	if (p1 & 8) {

   232

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

   233

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

   234

					return CMD_ERROR;

   235

	}

   236

   237

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

   238

		int count;

   239

		TileIndex *ti = ts.tile_table;

   240

   241

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

   242

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

   243

			TileIndex tile = *ti;

   244

   245

			_terraform_err_tile = tile;

   246

   247

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

   248

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

   249

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

   250

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

   251

   252

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

   253

   254

			if (IsTileType(tile, MP_RAILWAY)) {

   255

				if (IsSteepTileh(r)) return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK);

   256

   257

				if (IsPlainRailTile(tile)) {

   258

					extern const TrackBits _valid_tileh_slopes[2][15];

   259

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

   260

				} else return_cmd_error(STR_5800_OBJECT_IN_THE_WAY);

   261

			}

   262

   263

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

   264

   265

			_terraform_err_tile = 0;

   266

		}

   267

	}

   268

   269

	if (flags & DC_EXEC) {

   270

		/* Clear the landscape at the tiles */

   271

		{

   272

			int count;

   273

			TileIndex *ti = ts.tile_table;

   274

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

   275

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

   276

			}

   277

		}

   278

   279

		/* change the height */

   280

		{

   281

			int count;

   282

			TerraformerHeightMod *mod;

   283

   284

			mod = ts.modheight;

   285

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

   286

				TileIndex til = mod->tile;

   287

   288

				SetTileHeight(til, mod->height);

   289

				TerraformAddDirtyTileAround(&ts, til);

   290

			}

   291

		}

   292

   293

		/* finally mark the dirty tiles dirty */

   294

		{

   295

			int count;

   296

			TileIndex *ti = ts.tile_table;

   297

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

   298

				MarkTileDirtyByTile(*ti);

   299

			}

   300

		}

   301

	}

   302

	return ts.cost;

   303

}

   304

   305

   306

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

   307

 * @param x,y end tile of area-drag

   308

 * @param p1 start tile of area drag

   309

 * @param p2 unused

   310

 */

   311

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

   312

{

   313

	int size_x, size_y;

   314

	int sx, sy;

   315

	uint h, curh;

   316

	TileIndex tile;

   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

	ex >>= 4; ey >>= 4;

   327

   328

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

   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 = DoCommandByTile(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

				DoCommandByTile(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 x,y the tile the player is purchasing

   366

 * @param p1 unused

   367

 * @param p2 unused

   368

 */

   369

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

   370

{

   371

	TileIndex tile;

   372

	int32 cost;

   373

   374

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   375

   376

	tile = TileVirtXY(x, y);

   377

   378

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   379

   380

	if (IsTileType(tile, MP_UNMOVABLE) && _m[tile].m5 == 3 &&

   381

			IsTileOwner(tile, _current_player))

   382

		return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);

   383

   384

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

   385

	if (CmdFailed(cost)) return CMD_ERROR;

   386

   387

	if (flags & DC_EXEC) {

   388

		ModifyTile(tile,

   389

			MP_SETTYPE(MP_UNMOVABLE) | MP_MAPOWNER_CURRENT | MP_MAP5,

   390

			3 /* map5 */

   391

			);

   392

	}

   393

   394

	return cost + _price.purchase_land * 10;

   395

}

   396

   397

   398

static int32 ClearTile_Clear(TileIndex tile, byte flags)

   399

{

   400

	static const int32 null = 0;

   401

	static const int32* clear_price_table[] = {

   402

		&null,

   403

		&_price.clear_1,

   404

		&_price.clear_1,

   405

		&_price.clear_1,

   406

		&_price.purchase_land,

   407

		&_price.purchase_land,

   408

		&_price.purchase_land,

   409

		&_price.purchase_land,

   410

		&_price.clear_2,

   411

		&_price.clear_2,

   412

		&_price.clear_2,

   413

		&_price.clear_2,

   414

		&_price.clear_3,

   415

		&_price.clear_3,

   416

		&_price.clear_3,

   417

		&_price.clear_3,

   418

		&_price.purchase_land,

   419

		&_price.purchase_land,

   420

		&_price.purchase_land,

   421

		&_price.purchase_land,

   422

		&_price.purchase_land,

   423

		&_price.purchase_land,

   424

		&_price.purchase_land,

   425

		&_price.purchase_land,

   426

		&_price.clear_2,

   427

		&_price.clear_2,

   428

		&_price.clear_2,

   429

		&_price.clear_2,

   430

	};

   431

	const int32 *price = clear_price_table[GB(_m[tile].m5, 0, 5)];

   432

   433

	if (flags & DC_EXEC) DoClearSquare(tile);

   434

   435

	return *price;

   436

}

   437

   438

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

   439

 * the name is a bit confusing ;p

   440

 * @param x,y the tile the player is selling

   441

 * @param p1 unused

   442

 * @param p2 unused

   443

 */

   444

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

   445

{

   446

	TileIndex tile;

   447

   448

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

   449

   450

	tile = TileVirtXY(x, y);

   451

   452

	if (!IsTileType(tile, MP_UNMOVABLE) || _m[tile].m5 != 3) return CMD_ERROR;

   453

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

   454

   455

   456

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

   457

   458

	if (flags & DC_EXEC)

   459

		DoClearSquare(tile);

   460

   461

	return - _price.purchase_land * 2;

   462

}

   463

   464

   465

#include "table/clear_land.h"

   466

   467

   468

void DrawClearLandTile(const TileInfo *ti, byte set)

   469

{

   470

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

   471

}

   472

   473

void DrawHillyLandTile(const TileInfo *ti)

   474

{

   475

	if (ti->tileh != 0) {

   476

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

   477

	} else {

   478

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

   479

	}

   480

}

   481

   482

void DrawClearLandFence(const TileInfo *ti)

   483

{

   484

	byte m4 = _m[ti->tile].m4;

   485

	byte z = ti->z;

   486

   487

	if (ti->tileh & 2) {

   488

		z += 8;

   489

		if (ti->tileh == 0x17) z += 8;

   490

	}

   491

   492

	if (GB(m4, 5, 3) != 0) {

   493

		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GB(m4, 5, 3) - 1] + _fence_mod_by_tileh[ti->tileh], ti->x, ti->y, z);

   494

	}

   495

   496

	if (GB(m4, 2, 3) != 0) {

   497

		DrawGroundSpriteAt(_clear_land_fence_sprites_1[GB(m4, 2, 3) - 1] + _fence_mod_by_tileh_2[ti->tileh], ti->x, ti->y, z);

   498

	}

   499

}

   500

   501

static void DrawTile_Clear(TileInfo *ti)

   502

{

   503

	switch (GB(ti->map5, 2, 3)) {