1

/* $Id$ */

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     3

#include "stdafx.h"

     4

#include "openttd.h"

     5

#include "clear_map.h"

     6

#include "table/strings.h"

     7

#include "table/sprites.h"

     8

#include "table/tree_land.h"

     9

#include "functions.h"

    10

#include "map.h"

    11

#include "tile.h"

    12

#include "tree_map.h"

    13

#include "viewport.h"

    14

#include "command.h"

    15

#include "town.h"

    16

#include "sound.h"

    17

#include "variables.h"

    18

    19

static TreeType GetRandomTreeType(TileIndex tile, uint seed)

    20

{

    21

	switch (_opt.landscape) {

    22

		case LT_NORMAL:

    23

			return seed * TR_COUNT_TEMPERATE / 256 + TR_TEMPERATE;

    24

    25

		case LT_HILLY:

    26

			return seed * TR_COUNT_SUB_ARCTIC / 256 + TR_SUB_ARCTIC;

    27

    28

		case LT_DESERT:

    29

			switch (GetMapExtraBits(tile)) {

    30

				case 0:  return seed * TR_COUNT_SUB_TROPICAL / 256 + TR_SUB_TROPICAL;

    31

				case 1:  return (seed > 12) ? TR_INVALID : TR_CACTUS;

    32

				default: return seed * TR_COUNT_RAINFOREST / 256 + TR_RAINFOREST;

    33

			}

    34

    35

		default:

    36

			return seed * TR_COUNT_TOYLAND / 256 + TR_TOYLAND;

    37

	}

    38

}

    39

    40

static void PlaceTree(TileIndex tile, uint32 r)

    41

{

    42

	TreeType tree = GetRandomTreeType(tile, GB(r, 24, 8));

    43

    44

	if (tree != TR_INVALID) {

    45

		MakeTree(tile, tree, GB(r, 22, 2), min(GB(r, 16, 3), 6), TR_GRASS, 0);

    46

    47

		// above snowline?

    48

		if (_opt.landscape == LT_HILLY && GetTileZ(tile) > _opt.snow_line) {

    49

			SetTreeGroundDensity(tile, TR_SNOW_DESERT, 3);

    50

			SetTreeCounter(tile, GB(r, 24, 3));

    51

		} else {

    52

			SetTreeGroundDensity(tile, GB(r, 28, 1), 0);

    53

			SetTreeCounter(tile, GB(r, 24, 4));

    54

		}

    55

	}

    56

}

    57

    58

static void DoPlaceMoreTrees(TileIndex tile)

    59

{

    60

	uint i;

    61

    62

	for (i = 0; i < 1000; i++) {

    63

		uint32 r = Random();

    64

		int x = GB(r, 0, 5) - 16;

    65

		int y = GB(r, 8, 5) - 16;

    66

		uint dist = myabs(x) + myabs(y);

    67

		TileIndex cur_tile = TILE_MASK(tile + TileDiffXY(x, y));

    68

    69

		if (dist <= 13 &&

    70

				IsTileType(cur_tile, MP_CLEAR) &&

    71

				!IsClearGround(cur_tile, CL_FIELDS) &&

    72

				!IsClearGround(cur_tile, CL_ROCKS)) {

    73

			PlaceTree(cur_tile, r);

    74

		}

    75

	}

    76

}

    77

    78

static void PlaceMoreTrees(void)

    79

{

    80

	uint i = ScaleByMapSize(GB(Random(), 0, 5) + 25);

    81

	do {

    82

		DoPlaceMoreTrees(RandomTile());

    83

	} while (--i);

    84

}

    85

    86

void PlaceTreesRandomly(void)

    87

{

    88

	uint i;

    89

    90

	i = ScaleByMapSize(1000);

    91

	do {

    92

		uint32 r = Random();

    93

		TileIndex tile = RandomTileSeed(r);

    94

		if (IsTileType(tile, MP_CLEAR) &&

    95

				!IsClearGround(tile, CL_FIELDS) &&

    96

				!IsClearGround(tile, CL_ROCKS)) {

    97

			PlaceTree(tile, r);

    98

		}

    99

	} while (--i);

   100

   101

	/* place extra trees at rainforest area */

   102

	if (_opt.landscape == LT_DESERT) {

   103

		i = ScaleByMapSize(15000);

   104

   105

		do {

   106

			uint32 r = Random();

   107

			TileIndex tile = RandomTileSeed(r);

   108

			if (IsTileType(tile, MP_CLEAR) && GetMapExtraBits(tile) == 2) {

   109

				PlaceTree(tile, r);

   110

			}

   111

		} while (--i);

   112

	}

   113

}

   114

   115

void GenerateTrees(void)

   116

{

   117

	uint i;

   118

   119

	if (_opt.landscape != LT_CANDY) PlaceMoreTrees();

   120

   121

	for (i = _opt.landscape == LT_HILLY ? 15 : 6; i != 0; i--) {

   122

		PlaceTreesRandomly();

   123

	}

   124

}

   125

   126

/** Plant a tree.

   127

 * @param x,y start tile of area-drag of tree plantation

   128

 * @param p1 tree type, -1 means random.

   129

 * @param p2 end tile of area-drag

   130

 */

   131

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

   132

{

   133

	StringID msg = INVALID_STRING_ID;

   134

	int32 cost;

   135

	int sx, sy, x, y;

   136

   137

	if (p2 >= MapSize()) return CMD_ERROR;

   138

	/* Check the tree type. It can be random or some valid value within the current climate */

   139

	if (p1 != (uint)-1 && p1 - _tree_base_by_landscape[_opt.landscape] >= _tree_count_by_landscape[_opt.landscape]) return CMD_ERROR;

   140

   141

	SET_EXPENSES_TYPE(EXPENSES_OTHER);

   142

   143

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

   144

	sx = TileX(p2);

   145

	sy = TileY(p2);

   146

	ex /= 16; ey /= 16;

   147

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

   148

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

   149

   150

	cost = 0; // total cost

   151

   152

	for (x = sx; x <= ex; x++) {

   153

		for (y = sy; y <= ey; y++) {

   154

			TileIndex tile = TileXY(x, y);

   155

   156

			if (!EnsureNoVehicle(tile)) continue;

   157

   158

			switch (GetTileType(tile)) {

   159

				case MP_TREES:

   160

					// no more space for trees?

   161

					if (_game_mode != GM_EDITOR && GetTreeCount(tile) == 3) {

   162

						msg = STR_2803_TREE_ALREADY_HERE;

   163

						continue;

   164

					}

   165

   166

					if (flags & DC_EXEC) {

   167

						AddTreeCount(tile, 1);

   168

						MarkTileDirtyByTile(tile);

   169

					}

   170

					// 2x as expensive to add more trees to an existing tile

   171

					cost += _price.build_trees * 2;

   172

					break;

   173

   174

				case MP_CLEAR:

   175

					if (!IsTileOwner(tile, OWNER_NONE)) {

   176

						msg = STR_2804_SITE_UNSUITABLE;

   177

						continue;

   178

					}

   179

   180

					switch (GetClearGround(tile)) {

   181

						case CL_FIELDS: cost += _price.clear_3; break;

   182

						case CL_ROCKS:  cost += _price.clear_2; break;

   183

						default: break;

   184

					}

   185

   186

					if (flags & DC_EXEC) {

   187

						TreeType treetype;

   188

						uint growth;

   189

   190

						if (_game_mode != GM_EDITOR && _current_player < MAX_PLAYERS) {

   191

							Town *t = ClosestTownFromTile(tile, _patches.dist_local_authority);

   192

							if (t != NULL)

   193

								ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM);

   194

						}

   195

   196

						treetype = p1;

   197

						if (treetype == TR_INVALID) {

   198

							treetype = GetRandomTreeType(tile, GB(Random(), 24, 8));

   199

							if (treetype == TR_INVALID) treetype = TR_CACTUS;

   200

						}

   201

   202

						growth = _game_mode == GM_EDITOR ? 3 : 0;

   203

						switch (GetClearGround(tile)) {

   204

							case CL_ROUGH: MakeTree(tile, treetype, 0, growth, TR_ROUGH, 0); break;

   205

							case CL_SNOW:  MakeTree(tile, treetype, 0, growth, TR_SNOW_DESERT, GetClearDensity(tile)); break;

   206

							default:       MakeTree(tile, treetype, 0, growth, TR_GRASS, 0); break;

   207

						}

   208

						MarkTileDirtyByTile(tile);

   209

   210

						if (_game_mode == GM_EDITOR && IS_INT_INSIDE(treetype, TR_RAINFOREST, TR_CACTUS))

   211

							SetMapExtraBits(tile, 2);

   212

					}

   213

					cost += _price.build_trees;

   214

					break;

   215

   216

				default:

   217

					msg = STR_2804_SITE_UNSUITABLE;

   218

					break;

   219

			}

   220

		}

   221

	}

   222

   223

	if (cost == 0) {

   224

		return_cmd_error(msg);

   225

	} else {

   226

		return cost;

   227

	}

   228

}

   229

   230

typedef struct TreeListEnt {

   231

	uint32 image;

   232

	byte x,y;

   233

} TreeListEnt;

   234

   235

static void DrawTile_Trees(TileInfo *ti)

   236

{

   237

	const uint32 *s;

   238

	const TreePos* d;

   239

	byte z;

   240

   241

	switch (GetTreeGround(ti->tile)) {

   242

		case TR_GRASS: DrawClearLandTile(ti, 3); break;

   243

		case TR_ROUGH: DrawHillyLandTile(ti); break;

   244

		default:       DrawGroundSprite(_tree_sprites_1[GetTreeDensity(ti->tile)] + _tileh_to_sprite[ti->tileh]); break;

   245

	}

   246

   247

	DrawClearLandFence(ti);

   248

   249

	z = ti->z;

   250

	if (ti->tileh != 0) {

   251

		z += 4;

   252

		if (IsSteepTileh(ti->tileh))

   253

			z += 4;

   254

	}

   255

   256

	{

   257

		uint16 tmp = ti->x;

   258

		uint index;

   259

   260

		tmp = ROR(tmp, 2);

   261

		tmp -= ti->y;

   262

		tmp = ROR(tmp, 3);

   263

		tmp -= ti->x;

   264

		tmp = ROR(tmp, 1);

   265

		tmp += ti->y;

   266

   267

		d = _tree_layout_xy[GB(tmp, 4, 2)];

   268

   269

		index = GB(tmp, 6, 2) + (GetTreeType(ti->tile) << 2);

   270

   271

		/* different tree styles above one of the grounds */

   272

		if (GetTreeGround(ti->tile) == TR_SNOW_DESERT &&

   273

				GetTreeDensity(ti->tile) >= 2 &&

   274

				IS_INT_INSIDE(index, TR_SUB_ARCTIC << 2, TR_RAINFOREST << 2)) {

   275

			index += 164 - (TR_SUB_ARCTIC << 2);

   276

		}

   277

   278

		assert(index < lengthof(_tree_layout_sprite));

   279

		s = _tree_layout_sprite[index];

   280

	}

   281

   282

	StartSpriteCombine();

   283

   284

	if (!(_display_opt & DO_TRANS_BUILDINGS) || !_patches.invisible_trees) {

   285

		TreeListEnt te[4];

   286

		uint i;

   287

   288

		/* put the trees to draw in a list */

   289

		i = GetTreeCount(ti->tile) + 1;

   290

		do {

   291

			uint32 image = s[0] + (--i == 0 ? GetTreeGrowth(ti->tile) : 3);

   292

			if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);

   293

			te[i].image = image;

   294

			te[i].x = d->x;

   295

			te[i].y = d->y;

   296

			s++;

   297

			d++;

   298

		} while (i);

   299

   300

		/* draw them in a sorted way */

   301

		for (;;) {

   302

			byte min = 0xFF;

   303

			TreeListEnt *tep = NULL;

   304

   305

			i = GetTreeCount(ti->tile) + 1;

   306

			do {

   307

				if (te[--i].image != 0 && te[i].x + te[i].y < min) {

   308

					min = te[i].x + te[i].y;

   309

					tep = &te[i];

   310

				}

   311

			} while (i);

   312

   313

			if (tep == NULL) break;

   314

   315

			AddSortableSpriteToDraw(tep->image, ti->x + tep->x, ti->y + tep->y, 5, 5, 0x10, z);

   316

			tep->image = 0;

   317

		}

   318

	}

   319

   320

	EndSpriteCombine();

   321

}

   322

   323

   324

static uint GetSlopeZ_Trees(const TileInfo* ti)

   325

{

   326

	return GetPartialZ(ti->x & 0xF, ti->y & 0xF, ti->tileh) + ti->z;

   327

}

   328

   329

static uint GetSlopeTileh_Trees(const TileInfo* ti)

   330

{

   331

	return ti->tileh;

   332

}

   333

   334

static int32 ClearTile_Trees(TileIndex tile, byte flags)

   335

{

   336

	uint num;

   337

   338

	if (flags & DC_EXEC && _current_player < MAX_PLAYERS) {

   339

		Town *t = ClosestTownFromTile(tile, _patches.dist_local_authority);

   340

		if (t != NULL)

   341

			ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM);

   342

	}

   343

   344

	num = GetTreeCount(tile) + 1;

   345

	if (IS_INT_INSIDE(GetTreeType(tile), TR_RAINFOREST, TR_CACTUS)) num *= 4;

   346

   347

	if (flags & DC_EXEC) DoClearSquare(tile);

   348

   349

	return num * _price.remove_trees;

   350

}

   351

   352

static void GetAcceptedCargo_Trees(TileIndex tile, AcceptedCargo ac)

   353

{

   354

	/* not used */

   355

}

   356

   357

static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)

   358

{

   359

	TreeType tt = GetTreeType(tile);

   360

   361

	if (IS_INT_INSIDE(tt, TR_RAINFOREST, TR_CACTUS)) {

   362

		td->str = STR_280F_RAINFOREST;

   363

	} else if (tt == TR_CACTUS) {

   364

		td->str = STR_2810_CACTUS_PLANTS;

   365

	} else {

   366

		td->str = STR_280E_TREES;

   367

	}

   368

   369

	td->owner = GetTileOwner(tile);

   370

}

   371

   372

static void AnimateTile_Trees(TileIndex tile)

   373

{

   374

	/* not used */

   375

}

   376

   377

static void TileLoopTreesDesert(TileIndex tile)

   378

{

   379

	switch (GetMapExtraBits(tile)) {

   380

		case 1:

   381

			if (GetTreeGround(tile) != TR_SNOW_DESERT) {

   382

				SetTreeGroundDensity(tile, TR_SNOW_DESERT, 3);

   383

				MarkTileDirtyByTile(tile);

   384

			}

   385

			break;

   386

   387

		case 2: {

   388

			static const SoundFx forest_sounds[] = {

   389

				SND_42_LOON_BIRD,

   390

				SND_43_LION,

   391

				SND_44_MONKEYS,

   392

				SND_48_DISTANT_BIRD

   393

			};

   394

			uint32 r = Random();

   395

   396

			if (CHANCE16I(1, 200, r)) SndPlayTileFx(forest_sounds[GB(r, 16, 2)], tile);

   397

			break;

   398

		}

   399

	}

   400

}

   401

   402

static void TileLoopTreesAlps(TileIndex tile)

   403

{

   404

	int k = GetTileZ(tile) - _opt.snow_line;

   405

   406

	if (k < -8) {

   407

		if (GetTreeGround(tile) != TR_SNOW_DESERT) return;

   408

		SetTreeGroundDensity(tile, TR_GRASS, 0);

   409

	} else {

   410

		uint density = min((uint)(k + 8) / 8, 3);

   411

   412

		if (GetTreeGround(tile) != TR_SNOW_DESERT || GetTreeDensity(tile) != density) {

   413

			SetTreeGroundDensity(tile, TR_SNOW_DESERT, density);

   414

		} else {

   415

			if (GetTreeDensity(tile) == 3) {

   416

				uint32 r = Random();

   417

				if (CHANCE16I(1, 200, r)) {

   418

					SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);

   419

				}

   420

			}

   421

			return;

   422

		}

   423

	}

   424

	MarkTileDirtyByTile(tile);

   425

}

   426

   427

static void TileLoop_Trees(TileIndex tile)

   428

{

   429

	static const TileIndexDiffC _tileloop_trees_dir[] = {

   430

		{-1, -1},

   431

		{ 0, -1},

   432

		{ 1, -1},

   433

		{-1,  0},

   434

		{ 1,  0},

   435

		{-1,  1},

   436

		{ 0,  1},

   437

		{ 1,  1}

   438

	};

   439

   440

	switch (_opt.landscape) {

   441

		case LT_DESERT: TileLoopTreesDesert(tile); break;

   442

		case LT_HILLY:  TileLoopTreesAlps(tile);   break;

   443

	}

   444

   445

	TileLoopClearHelper(tile);

   446

   447

	if (GetTreeCounter(tile) < 15) {

   448

		AddTreeCounter(tile, 1);

   449

		return;

   450

	}

   451

	SetTreeCounter(tile, 0);

   452

   453

	switch (GetTreeGrowth(tile)) {

   454

		case 3: /* regular sized tree */

   455

			if (_opt.landscape == LT_DESERT && GetTreeType(tile) != TR_CACTUS && GetMapExtraBits(tile) == 1) {

   456

				AddTreeGrowth(tile, 1);

   457

			} else {

   458

				switch (GB(Random(), 0, 3)) {

   459

					case 0: /* start destructing */

   460

						AddTreeGrowth(tile, 1);

   461

						break;

   462

   463

					case 1: /* add a tree */

   464

						if (GetTreeCount(tile) < 3) {

   465

							AddTreeCount(tile, 1);

   466

							SetTreeGrowth(tile, 0);

   467

							break;

   468

						}

   469

						/* FALL THROUGH */

   470

   471

					case 2: { /* add a neighbouring tree */

   472

						TreeType treetype = GetTreeType(tile);

   473

   474

						tile += ToTileIndexDiff(_tileloop_trees_dir[Random() & 7]);

   475

   476

						if (!IsTileType(tile, MP_CLEAR)) return;

   477

   478

						switch (GetClearGround(tile)) {

   479

							case CL_GRASS:

   480

								if (GetClearDensity(tile) != 3) return;

   481

								MakeTree(tile, treetype, 0, 0, TR_GRASS, 0);

   482

								break;

   483

   484

							case CL_ROUGH: MakeTree(tile, treetype, 0, 0, TR_ROUGH, 0); break;

   485

							case CL_SNOW:  MakeTree(tile, treetype, 0, 0, TR_SNOW_DESERT, GetClearDensity(tile)); break;

   486

							default: return;

   487

						}

   488

						break;

   489

					}

   490

   491

					default:

   492

						return;

   493