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"

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#include "town.h"

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#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 * TREE_COUNT_TEMPERATE / 256 + TREE_TEMPERATE;

    24

    25

		case LT_HILLY:

    26

			return seed * TREE_COUNT_SUB_ARCTIC / 256 + TREE_SUB_ARCTIC;

    27

    28

		case LT_DESERT:

    29

			switch (GetTropicZone(tile)) {

    30

				case TROPICZONE_INVALID: return seed * TREE_COUNT_SUB_TROPICAL / 256 + TREE_SUB_TROPICAL;

    31

				case TROPICZONE_DESERT:  return (seed > 12) ? TREE_INVALID : TREE_CACTUS;

    32

				default:                 return seed * TREE_COUNT_RAINFOREST / 256 + TREE_RAINFOREST;

    33

			}

    34

    35

		default:

    36

			return seed * TREE_COUNT_TOYLAND / 256 + TREE_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 != TREE_INVALID) {

    45

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

    46

    47

		// above snowline?

    48

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

    49

			SetTreeGroundDensity(tile, TREE_GROUND_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, CLEAR_FIELDS) &&

    72

				!IsClearGround(cur_tile, CLEAR_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, CLEAR_FIELDS) &&

    96

				!IsClearGround(tile, CLEAR_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) && GetTropicZone(tile) == TROPICZONE_RAINFOREST) {

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

   132

{

   133

	StringID msg = INVALID_STRING_ID;

   134

	int32 cost;

   135

	int ex;

   136

	int ey;

   137

	int sx, sy, x, y;

   138

   139

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

   140

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

   141

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

   142

   143

	SET_EXPENSES_TYPE(EXPENSES_OTHER);

   144

   145

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

   146

	ex = TileX(tile);

   147

	ey = TileY(tile);

   148

	sx = TileX(p2);

   149

	sy = TileY(p2);

   150

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

   151

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

   152

   153

	cost = 0; // total cost

   154

   155

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

   156

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

   157

			TileIndex tile = TileXY(x, y);

   158

   159

			if (!EnsureNoVehicle(tile)) continue;

   160

   161

			switch (GetTileType(tile)) {

   162

				case MP_TREES:

   163

					// no more space for trees?

   164

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

   165

						msg = STR_2803_TREE_ALREADY_HERE;

   166

						continue;

   167

					}

   168

   169

					if (flags & DC_EXEC) {

   170

						AddTreeCount(tile, 1);

   171

						MarkTileDirtyByTile(tile);

   172

					}

   173

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

   174

					cost += _price.build_trees * 2;

   175

					break;

   176

   177

				case MP_CLEAR:

   178

					if (!IsTileOwner(tile, OWNER_NONE)) {

   179

						msg = STR_2804_SITE_UNSUITABLE;

   180

						continue;

   181

					}

   182

   183

					switch (GetClearGround(tile)) {

   184

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

   185

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

   186

						default: break;

   187

					}

   188

   189

					if (flags & DC_EXEC) {

   190

						TreeType treetype;

   191

						uint growth;

   192

   193

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

   194

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

   195

							if (t != NULL)

   196

								ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM);

   197

						}

   198

   199

						treetype = p1;

   200

						if (treetype == TREE_INVALID) {

   201

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

   202

							if (treetype == TREE_INVALID) treetype = TREE_CACTUS;

   203

						}

   204

   205

						growth = _game_mode == GM_EDITOR ? 3 : 0;

   206

						switch (GetClearGround(tile)) {

   207

							case CLEAR_ROUGH: MakeTree(tile, treetype, 0, growth, TREE_GROUND_ROUGH, 0); break;

   208

							case CLEAR_SNOW:  MakeTree(tile, treetype, 0, growth, TREE_GROUND_SNOW_DESERT, GetClearDensity(tile)); break;

   209

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

   210

						}

   211

						MarkTileDirtyByTile(tile);

   212

   213

						if (_game_mode == GM_EDITOR && IS_INT_INSIDE(treetype, TREE_RAINFOREST, TREE_CACTUS))

   214

							SetTropicZone(tile, TROPICZONE_RAINFOREST);

   215

					}

   216

					cost += _price.build_trees;

   217

					break;

   218

   219

				default:

   220

					msg = STR_2804_SITE_UNSUITABLE;

   221

					break;

   222

			}

   223

		}

   224

	}

   225

   226

	if (cost == 0) {

   227

		return_cmd_error(msg);

   228

	} else {

   229

		return cost;

   230

	}

   231

}

   232

   233

typedef struct TreeListEnt {

   234

	uint32 image;

   235

	byte x,y;

   236

} TreeListEnt;

   237

   238

static void DrawTile_Trees(TileInfo *ti)

   239

{

   240

	const uint32 *s;

   241

	const TreePos* d;

   242

	byte z;

   243

   244

	switch (GetTreeGround(ti->tile)) {

   245

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

   246

		case TREE_GROUND_ROUGH: DrawHillyLandTile(ti); break;

   247

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

   248

	}

   249

   250

	DrawClearLandFence(ti);

   251

   252

	z = ti->z;

   253

	if (ti->tileh != 0) {

   254

		z += 4;

   255

		if (IsSteepTileh(ti->tileh))

   256

			z += 4;

   257

	}

   258

   259

	{

   260

		uint16 tmp = ti->x;

   261

		uint index;

   262

   263

		tmp = ROR(tmp, 2);

   264

		tmp -= ti->y;

   265

		tmp = ROR(tmp, 3);

   266

		tmp -= ti->x;

   267

		tmp = ROR(tmp, 1);

   268

		tmp += ti->y;

   269

   270

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

   271

   272

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

   273

   274

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

   275

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

   276

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

   277

				IS_INT_INSIDE(index, TREE_SUB_ARCTIC << 2, TREE_RAINFOREST << 2)) {

   278

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

   279

		}

   280

   281

		assert(index < lengthof(_tree_layout_sprite));

   282

		s = _tree_layout_sprite[index];

   283

	}

   284

   285

	StartSpriteCombine();

   286

   287

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

   288

		TreeListEnt te[4];

   289

		uint i;

   290

   291

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

   292

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

   293

		do {

   294

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

   295

			if (_display_opt & DO_TRANS_BUILDINGS) MAKE_TRANSPARENT(image);

   296

			te[i].image = image;

   297

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

   298

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

   299

			s++;

   300

			d++;

   301

		} while (i);

   302

   303

		/* draw them in a sorted way */

   304

		for (;;) {

   305

			byte min = 0xFF;

   306

			TreeListEnt *tep = NULL;

   307

   308

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

   309

			do {

   310

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

   311

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

   312

					tep = &te[i];

   313

				}

   314

			} while (i);

   315

   316

			if (tep == NULL) break;

   317

   318

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

   319

			tep->image = 0;

   320

		}

   321

	}

   322

   323

	EndSpriteCombine();

   324

}

   325

   326

   327

static uint GetSlopeZ_Trees(const TileInfo* ti)

   328

{

   329

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

   330

}

   331

   332

static uint GetSlopeTileh_Trees(TileIndex tile, uint tileh)

   333

{

   334

	return tileh;

   335

}

   336

   337

static int32 ClearTile_Trees(TileIndex tile, byte flags)

   338

{

   339

	uint num;

   340

   341

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

   342

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

   343

		if (t != NULL)

   344

			ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM);

   345

	}

   346

   347

	num = GetTreeCount(tile) + 1;

   348

	if (IS_INT_INSIDE(GetTreeType(tile), TREE_RAINFOREST, TREE_CACTUS)) num *= 4;

   349

   350

	if (flags & DC_EXEC) DoClearSquare(tile);

   351

   352

	return num * _price.remove_trees;

   353

}

   354

   355

static void GetAcceptedCargo_Trees(TileIndex tile, AcceptedCargo ac)

   356

{

   357

	/* not used */

   358

}

   359

   360

static void GetTileDesc_Trees(TileIndex tile, TileDesc *td)

   361

{

   362

	TreeType tt = GetTreeType(tile);

   363

   364

	if (IS_INT_INSIDE(tt, TREE_RAINFOREST, TREE_CACTUS)) {

   365

		td->str = STR_280F_RAINFOREST;

   366

	} else if (tt == TREE_CACTUS) {

   367

		td->str = STR_2810_CACTUS_PLANTS;

   368

	} else {

   369

		td->str = STR_280E_TREES;

   370

	}

   371

   372

	td->owner = GetTileOwner(tile);

   373

}

   374

   375

static void AnimateTile_Trees(TileIndex tile)

   376

{

   377

	/* not used */

   378

}

   379

   380

static void TileLoopTreesDesert(TileIndex tile)

   381

{

   382

	switch (GetTropicZone(tile)) {

   383

		case TROPICZONE_DESERT:

   384

			if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT) {

   385

				SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, 3);

   386

				MarkTileDirtyByTile(tile);

   387

			}

   388

			break;

   389

   390

		case TROPICZONE_RAINFOREST: {

   391

			static const SoundFx forest_sounds[] = {

   392

				SND_42_LOON_BIRD,

   393

				SND_43_LION,

   394

				SND_44_MONKEYS,

   395

				SND_48_DISTANT_BIRD

   396

			};

   397

			uint32 r = Random();

   398

   399

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

   400

			break;

   401

		}

   402

   403

		default: break;

   404

	}

   405

}

   406

   407

static void TileLoopTreesAlps(TileIndex tile)

   408

{

   409

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

   410

   411

	if (k < -TILE_HEIGHT) {

   412

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

   413

		SetTreeGroundDensity(tile, TREE_GROUND_GRASS, 0);

   414

	} else {

   415

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

   416

   417

		if (GetTreeGround(tile) != TREE_GROUND_SNOW_DESERT ||

   418

				GetTreeDensity(tile) != density) {

   419

			SetTreeGroundDensity(tile, TREE_GROUND_SNOW_DESERT, density);

   420

		} else {

   421

			if (GetTreeDensity(tile) == 3) {

   422

				uint32 r = Random();

   423

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

   424

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

   425

				}

   426

			}

   427

			return;

   428

		}

   429

	}

   430

	MarkTileDirtyByTile(tile);

   431

}

   432

   433

static void TileLoop_Trees(TileIndex tile)

   434

{

   435

	static const TileIndexDiffC _tileloop_trees_dir[] = {

   436

		{-1, -1},

   437

		{ 0, -1},

   438

		{ 1, -1},

   439

		{-1,  0},

   440

		{ 1,  0},

   441

		{-1,  1},

   442

		{ 0,  1},

   443

		{ 1,  1}

   444

	};

   445

   446

	switch (_opt.landscape) {

   447

		case LT_DESERT: TileLoopTreesDesert(tile); break;

   448

		case LT_HILLY:  TileLoopTreesAlps(tile);   break;

   449

	}

   450

   451

	TileLoopClearHelper(tile);

   452

   453

	if (GetTreeCounter(tile) < 15) {

   454

		AddTreeCounter(tile, 1);

   455

		return;

   456

	}

   457

	SetTreeCounter(tile, 0);

   458

   459

	switch (GetTreeGrowth(tile)) {

   460

		case 3: /* regular sized tree */

   461

			if (_opt.landscape == LT_DESERT &&

   462

					GetTreeType(tile) != TREE_CACTUS &&

   463

					GetTropicZone(tile) == TROPICZONE_DESERT) {

   464

				AddTreeGrowth(tile, 1);

   465

			} else {

   466

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

   467

					case 0: /* start destructing */

   468

						AddTreeGrowth(tile, 1);

   469

						break;

   470

   471

					case 1: /* add a tree */

   472

						if (GetTreeCount(tile) < 3) {

   473

							AddTreeCount(tile, 1);

   474

							SetTreeGrowth(tile, 0);

   475

							break;

   476

						}

   477

						/* FALL THROUGH */

   478

   479

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

   480

						TreeType treetype = GetTreeType(tile);

   481

   482

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

   483

   484

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

   485

   486

						switch (GetClearGround(tile)) {

   487

							case CLEAR_GRASS:

   488

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

   489

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

   490

								break;