summaryrefslogtreecommitdiff
path: root/tree_cmd.c
blob: 18b71c1d0dff862025cc9466ae7dd73f576c8a0e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
#include "stdafx.h"
#include "openttd.h"
#include "table/strings.h"
#include "table/tree_land.h"
#include "map.h"
#include "tile.h"
#include "viewport.h"
#include "command.h"
#include "town.h"
#include "sound.h"

static int GetRandomTreeType(TileIndex tile, uint seed)
{
	switch (_opt.landscape) {
		case LT_NORMAL:
			return seed * 12 >> 8;

		case LT_HILLY:
			return (seed >> 5) + 12;

		case LT_DESERT:
			switch (GetMapExtraBits(tile)) {
				case 0:
					return (seed >> 6) + 28;

				case 1:
					return (seed > 12) ? -1 : 27;

				default:
					return (seed * 7 >> 8) + 20;
			}

		default:
			return (seed * 9 >> 8) + 32;
	}
}

static void PlaceTree(uint tile, uint32 r, byte m5_or)
{
	int tree = GetRandomTreeType(tile, (r >> 24));
	byte m5;

	if (tree >= 0) {
		m5 = (byte)(r >> 16);
		if ((m5 & 0x7) == 7) m5--; // there is no growth state 7

		_map5[tile] = m5 & 0x07;	// growth state;
		_map5[tile] |=  m5 & 0xC0;	// amount of trees

		_map3_lo[tile] = tree;		// set type of tree
		_map3_hi[tile] = 0;		// no hedge

		// above snowline?
		if (_opt.landscape == LT_HILLY && GetTileZ(tile) > _opt.snow_line) {
			_map2[tile] = 0xE0;	// set land type to snow
			_map2[tile] |= (byte)(r >> 24)&0x07; // randomize counter
		}
		else
		{
			_map2[tile] = (byte)(r >> 24)&0x1F; // randomize counter and ground
		}


		// make it tree class
		SetTileType(tile, MP_TREES);
	}
}

static void DoPlaceMoreTrees(uint tile)
{
	int i = 1000;
	int x,y;
	uint cur_tile;
	int dist;

	do {
		uint32 r = Random();
		x = (r & 0x1F) - 16;
		y = ((r>>8) & 0x1F) - 16;

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

		cur_tile = TILE_MASK(tile + TILE_XY(x,y));

		/* Only on tiles within 13 squares from tile,
		    on clear tiles, and NOT on farm-tiles or rocks */
		if (dist <= 13 && IsTileType(cur_tile, MP_CLEAR) &&
			 (_map5[cur_tile] & 0x1F) != 0x0F && (_map5[cur_tile] & 0x1C) != 8) {
			PlaceTree(cur_tile, r, dist <= 6 ? 0xC0 : 0);
		}
	} while (--i);
}

static void PlaceMoreTrees(void)
{
	int i = ScaleByMapSize((Random() & 0x1F) + 25);
	do {
		DoPlaceMoreTrees(TILE_MASK(Random()));
	} while (--i);
}

void PlaceTreesRandomly(void)
{
	int i;
	uint32 r;
	uint tile;

	i = ScaleByMapSize(1000);
	do {
		r = Random();
		tile = TILE_MASK(r);
		/* Only on clear tiles, and NOT on farm-tiles or rocks */
		if (IsTileType(tile, MP_CLEAR) && (_map5[tile] & 0x1F) != 0x0F && (_map5[tile] & 0x1C) != 8) {
			PlaceTree(tile, r, 0);
		}
	} while (--i);

	/* place extra trees at rainforest area */
	if (_opt.landscape == LT_DESERT) {
		i = ScaleByMapSize(15000);

		do {
			r = Random();
			tile = TILE_MASK(r);
			if (IsTileType(tile, MP_CLEAR) && GetMapExtraBits(tile) == 2) {
				PlaceTree(tile, r, 0);
			}
		} while (--i);
	}
}

void GenerateTrees(void)
{
	int i;

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

	i = _opt.landscape == LT_HILLY ? 15 : 6;
	do {
		PlaceTreesRandomly();
	} while (--i);
}

/** Plant a tree.
 * @param x,y start tile of area-drag of tree plantation
 * @param p1 tree type, -1 means random.
 * @param p2 end tile of area-drag
 */
int32 CmdPlantTree(int ex, int ey, uint32 flags, uint32 p1, uint32 p2)
{
	int32 cost;
	int sx;
	int sy;
	int x;
	int y;

	if (p2 > MapSize()) return CMD_ERROR;
	/* Check the tree type. It can be random or some valid value within the current climate */
	if (p1 != (uint)-1 && p1 - _tree_base_by_landscape[_opt.landscape] >= _tree_count_by_landscape[_opt.landscape]) return CMD_ERROR;

	SET_EXPENSES_TYPE(EXPENSES_OTHER);

	// make sure sx,sy are smaller than ex,ey
	sx = TileX(p2) * 16;
	sy = TileY(p2) * 16;
	if (ex < sx) intswap(ex, sx);
	if (ey < sy) intswap(ey, sy);

	cost = 0; // total cost

	for (x = sx; x <= ex; x += 16) {
		for (y = sy; y <= ey; y += 16) {
			TileInfo ti;

			FindLandscapeHeight(&ti, x, y);
			if (!EnsureNoVehicle(ti.tile))
				continue;

			switch (ti.type) {
				case MP_TREES:
					// no more space for trees?
					if (_game_mode != GM_EDITOR && (ti.map5 & 0xC0) == 0xC0) {
						_error_message = STR_2803_TREE_ALREADY_HERE;
						continue;
					}

					if (flags & DC_EXEC) {
						_map5[ti.tile] = ti.map5 + 0x40;
						MarkTileDirtyByTile(ti.tile);
					}
					// 2x as expensive to add more trees to an existing tile
					cost += _price.build_trees * 2;
					break;

				case MP_CLEAR:
					if (_map_owner[ti.tile] != OWNER_NONE) {
						_error_message = STR_2804_SITE_UNSUITABLE;
						continue;
					}

					// it's expensive to clear farmland
					if ((ti.map5 & 0x1F) == 0xF)
						cost += _price.clear_3;
					else if ((ti.map5 & 0x1C) == 8)
						cost += _price.clear_2;

					if (flags & DC_EXEC) {
						int treetype;
						int m2;

						if (_game_mode != GM_EDITOR && _current_player < MAX_PLAYERS) {
							Town *t = ClosestTownFromTile(ti.tile, _patches.dist_local_authority);
							if (t != NULL)
								ChangeTownRating(t, RATING_TREE_UP_STEP, RATING_TREE_MAXIMUM);
						}

						switch (ti.map5 & 0x1C) {
							case 0x04:
								m2 = 16;
								break;

							case 0x10:
								m2 = ((ti.map5 & 3) << 6) | 0x20;
								break;

							default:
								m2 = 0;
								break;
						}

						treetype = p1;
						if (treetype == -1) {
							treetype = GetRandomTreeType(ti.tile, Random() >> 24);
							if (treetype == -1) treetype = 27;
						}

						ModifyTile(ti.tile,
							MP_SETTYPE(MP_TREES) |
							MP_MAP2 | MP_MAP3LO | MP_MAP3HI_CLEAR | MP_MAP5,
							m2, /* map2 */
							treetype, /* map3lo */
							_game_mode == GM_EDITOR ? 3 : 0 /* map5 */
						);

						if (_game_mode == GM_EDITOR && IS_BYTE_INSIDE(treetype, 0x14, 0x1B))
							SetMapExtraBits(ti.tile, 2);
					}
					cost += _price.build_trees;
					break;

				default:
					_error_message = STR_2804_SITE_UNSUITABLE;
					break;
			}
		}
	}

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

typedef struct TreeListEnt {
	uint32 image;
	byte x,y;
} TreeListEnt;

static void DrawTile_Trees(TileInfo *ti)
{
	uint16 m2;
	const uint32 *s;
	const byte *d;
	byte z;
	TreeListEnt te[4];

	m2 = _map2[ti->tile];

	if ( (m2&0x30) == 0) {
		DrawClearLandTile(ti, 3);
	} else if ((m2&0x30) == 0x20) {
		DrawGroundSprite(_tree_sprites_1[m2 >> 6] + _tileh_to_sprite[ti->tileh]);
	} else {
		DrawHillyLandTile(ti);
	}

	DrawClearLandFence(ti, _map3_hi[ti->tile] >> 2);

	z = ti->z;
	if (ti->tileh != 0) {
		z += 4;
		if (ti->tileh & 0x10)
			z += 4;
	}

	{
		uint16 tmp = ti->x;
		uint index;

		tmp = (tmp >> 2) | (tmp << 14);
		tmp -= ti->y;
		tmp = (tmp >> 3) | (tmp << 13);
		tmp -= ti->x;
		tmp = (tmp >> 1) | (tmp << 15);
		tmp += ti->y;

		d = _tree_layout_xy[(tmp & 0x30) >> 4];

		index = ((tmp>>6)&3) + (_map3_lo[ti->tile]<<2);

		/* different tree styles above one of the grounds */
		if ((m2 & 0xB0) == 0xA0 && index >= 48 && index < 80)
			index += 164 - 48;

		assert(index < lengthof(_tree_layout_sprite));
		s = _tree_layout_sprite[index];
	}

	StartSpriteCombine();

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

		/* put the trees to draw in a list */
		i = (ti->map5 >> 6) + 1;
		do {
			uint32 image = s[0] + (--i==0 ? (ti->map5 & 7) : 3);
			if (_display_opt & DO_TRANS_BUILDINGS)
				image = (image & 0x3FFF) | 0x3224000;
			te[i].image = image;
			te[i].x = d[0];
			te[i].y = d[1];
			s++;
			d+=2;
		} while (i);

		/* draw them in a sorted way */
		for(;;) {
			byte min = 0xFF;
			TreeListEnt *tep = NULL;

			i = (ti->map5 >> 6) + 1;
			do {
				if (te[--i].image!=0 && (byte)(te[i].x + te[i].y) < min) {
					min = te[i].x + te[i].y;
					tep = &te[i];
				}
			} while (i);

			if (tep == NULL)
				break;

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

	EndSpriteCombine();
}


static uint GetSlopeZ_Trees(TileInfo *ti) {
	return GetPartialZ(ti->x&0xF, ti->y&0xF, ti->tileh) + ti->z;
}

static uint GetSlopeTileh_Trees(TileInfo *ti) {
	return ti->tileh;
}

static int32 ClearTile_Trees(uint tile, byte flags) {
	int num;

	if (flags & DC_EXEC && _current_player < MAX_PLAYERS) {
		Town *t = ClosestTownFromTile(tile, _patches.dist_local_authority);
		if (t != NULL)
			ChangeTownRating(t, RATING_TREE_DOWN_STEP, RATING_TREE_MINIMUM);
	}

	num = (_map5[tile] >> 6) + 1;
	if ( (byte)(_map3_lo[tile]-0x14) <= (0x1A-0x14))
		num <<= 2;

	if (flags & DC_EXEC)
		DoClearSquare(tile);

	return num * _price.remove_trees;
}

static void GetAcceptedCargo_Trees(uint tile, AcceptedCargo ac)
{
	/* not used */
}

static void GetTileDesc_Trees(uint tile, TileDesc *td)
{
	byte b;
	StringID str;

	td->owner = _map_owner[tile];

	b = _map3_lo[tile];
	(str=STR_2810_CACTUS_PLANTS, b==0x1B) ||
	(str=STR_280F_RAINFOREST, IS_BYTE_INSIDE(b, 0x14, 0x1A+1)) ||
	(str=STR_280E_TREES, true);
	td->str = str;
}

static void AnimateTile_Trees(uint tile)
{
	/* not used */
}

static SoundFx _desert_sounds[] = {
	SND_42_LOON_BIRD,
	SND_43_LION,
	SND_44_MONKEYS,
	SND_48_DISTANT_BIRD
};

static void TileLoopTreesDesert(uint tile)
{
	byte b;

	if ((b=GetMapExtraBits(tile)) == 2) {
		uint32 r;

		if (CHANCE16I(1,200,r=Random())) {
			SndPlayTileFx(_desert_sounds[(r >> 16) & 3], tile);
		}
	} else if (b == 1) {
		if ((_map2[tile] & 0x30) != 0x20) {
			_map2[tile] &= 0xF;
			_map2[tile] |= 0xE0;
			MarkTileDirtyByTile(tile);
		}
	}
}

static void TileLoopTreesAlps(uint tile)
{
	byte tmp, m2;
	int k;

	/* distance from snow line, in steps of 8 */
	k = GetTileZ(tile) - _opt.snow_line;

	tmp = _map5[tile] & 0xF0;

	if (k < -8) {
		/* snow_m2_down */
		if ((tmp&0x30) != 0x20)
			return;
		m2 = 0;
	} else if (k == -8) {
		/* snow_m1 */
		m2 = 0x20;
		if (tmp == m2)
			return;
	} else if (k < 8) {
		/* snow_0 */
		m2 = 0x60;
		if (tmp == m2)
			return;
	} else if (k == 8) {
		/* snow_p1 */
		m2 = 0xA0;
		if (tmp == m2)
			return;
	} else {
		/* snow_p2_up */
		if (tmp == 0xC0) {
			uint32 r;
			if (CHANCE16I(1,200,r=Random())) {
				SndPlayTileFx((r & 0x80000000) ? SND_39_HEAVY_WIND : SND_34_WIND, tile);
			}
			return;
		} else {
			m2 = 0xE0;
		}
	}

	_map2[tile] &= 0xF;
	_map2[tile] |= m2;
	MarkTileDirtyByTile(tile);
}

static void TileLoop_Trees(uint tile)
{
	byte m5;
	uint16 m2;

	static const TileIndexDiffC _tileloop_trees_dir[] = {
		{-1, -1},
		{ 0, -1},
		{ 1, -1},
		{-1,  0},
		{ 1,  0},
		{-1,  1},
		{ 0,  1},
		{ 1,  1}
	};

	if (_opt.landscape == LT_DESERT) {
		TileLoopTreesDesert(tile);
	} else if (_opt.landscape == LT_HILLY) {
		TileLoopTreesAlps(tile);
	}

	TileLoopClearHelper(tile);

	/* increase counter */
	{
		uint16 m2 = _map2[tile];
		_map2[tile] = m2 = (m2 & 0xF0) | ((m2+1)&0xF);
		if (m2 & 0xF)
			return;
	}

	m5 = _map5[tile];
	if ((m5&7) == 3) {
		/* regular sized tree */
		if (_opt.landscape == LT_DESERT && _map3_lo[tile]!=0x1B && GetMapExtraBits(tile)==1) {
			m5++; /* start destructing */
		} else {
			switch(Random() & 0x7) {
			case 0: /* start destructing */
				m5++;
				break;

			case 1: /* add a tree */
				if (m5 < 0xC0) {
					m5 = (m5 + 0x40) & ~7;
					break;
				}
				/* fall through */

			case 2: { /* add a neighbouring tree */
				byte m3 = _map3_lo[tile];

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

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

				if ( (_map5[tile] & 0x1C) == 4) {
					_map2[tile] = 0x10;
				} else if ((_map5[tile] & 0x1C) == 16) {
					_map2[tile] = ((_map5[tile] & 3) << 6) | 0x20;
				} else {
					if ((_map5[tile] & 0x1F) != 3)
						return;
					_map2[tile] = 0;
				}

				_map3_lo[tile] = m3;
				_map3_hi[tile] = 0;
				SetTileType(tile, MP_TREES);

				m5 = 0;
				break;
			}

			default:
				return;
			}
		}
	} else if ((m5&7) == 6) {
		/* final stage of tree destruction */
		if (m5 & 0xC0) {
			/* more than one tree, delete it? */
			m5 = ((m5 - 6) - 0x40) + 3;
		} else {
			/* just one tree, change type into MP_CLEAR */
			SetTileType(tile, MP_CLEAR);

			m5 = 3;
			m2 = _map2[tile];
			if ((m2&0x30) != 0) { // on snow/desert or rough land
				m5 = (m2 >> 6) | 0x10;
				if ((m2&0x30) != 0x20) // if not on snow/desert, then on rough land
					m5 = 7;
			}
			_map_owner[tile] = OWNER_NONE;
		}
	} else {
		/* in the middle of a transition, change to next */
		m5++;
	}

	_map5[tile] = m5;
	MarkTileDirtyByTile(tile);
}

void OnTick_Trees(void)
{
	uint32 r;
	uint tile;
	byte m;
	int tree;

	/* place a tree at a random rainforest spot */
	if (_opt.landscape == LT_DESERT &&
			(r=Random(),tile=TILE_MASK(r),GetMapExtraBits(tile)==2) &&
			IsTileType(tile, MP_CLEAR) &&
			(m=_map5[tile]&0x1C, m<=4) &&
			(tree=GetRandomTreeType(tile, r>>24)) >= 0) {

		ModifyTile(tile,
			MP_SETTYPE(MP_TREES) |
			MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
			(m == 4 ? 0x10 : 0),
			tree,
			_map3_hi[tile] & ~3,
			0
		);
	}

	// byte underflow
	if (--_trees_tick_ctr)
		return;

	/* place a tree at a random spot */
	r = Random();
	tile = TILE_MASK(r);
	if (IsTileType(tile, MP_CLEAR) &&
			(m=_map5[tile]&0x1C, m==0 || m==4 || m==0x10) &&
			(tree=GetRandomTreeType(tile, r>>24)) >= 0) {
		int m2;

		if (m == 0) {
			m2 = 0;
		} else if (m == 4) {
			m2 = 0x10;
		} else {
			m2 = ((_map5[tile] & 3) << 6) | 0x20;
		}

		ModifyTile(tile,
			MP_SETTYPE(MP_TREES) |
			MP_MAP2 | MP_MAP3LO | MP_MAP3HI | MP_MAP5,
			m2,
			tree,
			_map3_hi[tile] & ~3,
			0
		);
	}
}

static void ClickTile_Trees(uint tile)
{
	/* not used */
}

static uint32 GetTileTrackStatus_Trees(uint tile, TransportType mode)
{
	return 0;
}

static void ChangeTileOwner_Trees(uint tile, byte old_player, byte new_player)
{
	/* not used */
}

void InitializeTrees(void)
{
	_trees_tick_ctr = 0;
}


const TileTypeProcs _tile_type_trees_procs = {
	DrawTile_Trees,						/* draw_tile_proc */
	GetSlopeZ_Trees,					/* get_slope_z_proc */
	ClearTile_Trees,					/* clear_tile_proc */
	GetAcceptedCargo_Trees,		/* get_accepted_cargo_proc */
	GetTileDesc_Trees,				/* get_tile_desc_proc */
	GetTileTrackStatus_Trees,	/* get_tile_track_status_proc */
	ClickTile_Trees,					/* click_tile_proc */
	AnimateTile_Trees,				/* animate_tile_proc */
	TileLoop_Trees,						/* tile_loop_clear */
	ChangeTileOwner_Trees,		/* change_tile_owner_clear */
	NULL,											/* get_produced_cargo_proc */
	NULL,											/* vehicle_enter_tile_proc */
	NULL,											/* vehicle_leave_tile_proc */
	GetSlopeTileh_Trees,			/* get_slope_tileh_proc */
};