summaryrefslogtreecommitdiff
path: root/water_cmd.c
blob: 5d50f01ace0c5341e1bf46c19a0bddc3c223836f (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
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
/* $Id$ */

#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "station_map.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "functions.h"
#include "map.h"
#include "tile.h"
#include "vehicle.h"
#include "viewport.h"
#include "command.h"
#include "town.h"
#include "news.h"
#include "sound.h"
#include "depot.h"
#include "vehicle_gui.h"
#include "train.h"
#include "water_map.h"

const SpriteID _water_shore_sprites[15] = {
	0,
	SPR_SHORE_TILEH_1,
	SPR_SHORE_TILEH_2,
	SPR_SHORE_TILEH_3,
	SPR_SHORE_TILEH_4,
	0,
	SPR_SHORE_TILEH_6,
	0,
	SPR_SHORE_TILEH_8,
	SPR_SHORE_TILEH_9,
	0,
	0,
	SPR_SHORE_TILEH_12,
	0,
	0
};


static void FloodVehicle(Vehicle *v);

/** Build a ship depot.
 * @param tile tile where ship depot is built
 * @param p1 depot direction (0 == X or 1 == Y)
 * @param p2 unused
 */
int32 CmdBuildShipDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
	TileIndex tile2;

	int32 cost, ret;
	Depot *depot;

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

	if (p1 > 1) return CMD_ERROR;

	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

	tile2 = tile + (p1 ? TileDiffXY(0, 1) : TileDiffXY(1, 0));
	if (!EnsureNoVehicle(tile2)) return CMD_ERROR;

	if (!IsClearWaterTile(tile) || !IsClearWaterTile(tile2))
		return_cmd_error(STR_3801_MUST_BE_BUILT_ON_WATER);

	ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
	if (CmdFailed(ret)) return CMD_ERROR;
	ret = DoCommand(tile2, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
	if (CmdFailed(ret)) return CMD_ERROR;

	// pretend that we're not making land from the water even though we actually are.
	cost = 0;

	depot = AllocateDepot();
	if (depot == NULL) return CMD_ERROR;

	if (flags & DC_EXEC) {
		depot->xy = tile;
		depot->town_index = ClosestTownFromTile(tile, (uint)-1)->index;

		MakeShipDepot(tile,_current_player, DEPOT_NORTH, p1);
		MakeShipDepot(tile2,_current_player, DEPOT_SOUTH, p1);
		MarkTileDirtyByTile(tile);
		MarkTileDirtyByTile(tile2);
	}

	return cost + _price.build_ship_depot;
}

static int32 RemoveShipDepot(TileIndex tile, uint32 flags)
{
	TileIndex tile2;

	if (!IsShipDepot(tile)) return CMD_ERROR;
	if (!CheckTileOwnership(tile)) return CMD_ERROR;
	if (!EnsureNoVehicle(tile)) return CMD_ERROR;

	tile2 = GetOtherShipDepotTile(tile);

	if (!EnsureNoVehicle(tile2)) return CMD_ERROR;

	if (flags & DC_EXEC) {
		/* Kill the depot, which is registered at the northernmost tile. Use that one */
		DoDeleteDepot(tile2 < tile ? tile2 : tile);

		MakeWater(tile);
		MakeWater(tile2);
		MarkTileDirtyByTile(tile);
		MarkTileDirtyByTile(tile2);
	}

	return _price.remove_ship_depot;
}

// build a shiplift
static int32 DoBuildShiplift(TileIndex tile, DiagDirection dir, uint32 flags)
{
	int32 ret;
	int delta;

	// middle tile
	ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
	if (CmdFailed(ret)) return CMD_ERROR;

	delta = TileOffsByDir(dir);
	// lower tile
	ret = DoCommand(tile - delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
	if (CmdFailed(ret)) return CMD_ERROR;
	if (GetTileSlope(tile - delta, NULL) != SLOPE_FLAT) {
		return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
	}

	// upper tile
	ret = DoCommand(tile + delta, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
	if (CmdFailed(ret)) return CMD_ERROR;
	if (GetTileSlope(tile + delta, NULL) != SLOPE_FLAT) {
		return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
	}

	if (flags & DC_EXEC) {
		MakeLock(tile, _current_player, dir);
		MarkTileDirtyByTile(tile);
		MarkTileDirtyByTile(tile - delta);
		MarkTileDirtyByTile(tile + delta);
	}

	return _price.clear_water * 22 >> 3;
}

static int32 RemoveShiplift(TileIndex tile, uint32 flags)
{
	TileIndexDiff delta = TileOffsByDir(GetLockDirection(tile));

	if (!CheckTileOwnership(tile)) return CMD_ERROR;

	// make sure no vehicle is on the tile.
	if (!EnsureNoVehicle(tile) || !EnsureNoVehicle(tile + delta) || !EnsureNoVehicle(tile - delta))
		return CMD_ERROR;

	if (flags & DC_EXEC) {
		DoClearSquare(tile);
		DoClearSquare(tile + delta);
		DoClearSquare(tile - delta);
	}

	return _price.clear_water * 2;
}

static void MarkTilesAroundDirty(TileIndex tile)
{
	MarkTileDirtyByTile(TILE_ADDXY(tile, 0, 1));
	MarkTileDirtyByTile(TILE_ADDXY(tile, 0, -1));
	MarkTileDirtyByTile(TILE_ADDXY(tile, 1, 0));
	MarkTileDirtyByTile(TILE_ADDXY(tile, -1, 0));
}

/** Builds a lock (ship-lift)
 * @param tile tile where to place the lock
 * @param p1 unused
 * @param p2 unused
 */
int32 CmdBuildLock(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
	DiagDirection dir;

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

	switch (GetTileSlope(tile, NULL)) {
		case SLOPE_SW: dir = DIAGDIR_SW; break;
		case SLOPE_SE: dir = DIAGDIR_SE; break;
		case SLOPE_NW: dir = DIAGDIR_NW; break;
		case SLOPE_NE: dir = DIAGDIR_NE; break;
		default: return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
	}
	return DoBuildShiplift(tile, dir, flags);
}

/** Build a piece of canal.
 * @param tile end tile of stretch-dragging
 * @param p1 start tile of stretch-dragging
 * @param p2 ctrl pressed - toggles ocean / canals at sealevel
 */
int32 CmdBuildCanal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
	int32 cost;
	int size_x, size_y;
	int x;
	int y;
	int sx, sy;

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

	x = TileX(tile);
	y = TileY(tile);
	sx = TileX(p1);
	sy = TileY(p1);

	SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);

	if (x < sx) intswap(x, sx);
	if (y < sy) intswap(y, sy);
	size_x = (x - sx) + 1;
	size_y = (y - sy) + 1;

	/* Outside the editor you can only drag canals, and not areas */
	if (_game_mode != GM_EDITOR && (sx != x && sy != y)) return CMD_ERROR;

	cost = 0;
	BEGIN_TILE_LOOP(tile, size_x, size_y, TileXY(sx, sy)) {
		if (GetTileSlope(tile, NULL) != SLOPE_FLAT) {
			return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
		}

		// can't make water of water!
		if (IsTileType(tile, MP_WATER) && (!IsTileOwner(tile, OWNER_WATER) || HASBIT(p2, 0))) continue;

		/* is middle piece of a bridge? */
		if (IsBridgeTile(tile) && IsBridgeMiddle(tile)) {
			if (IsTransportUnderBridge(tile)) {
				return_cmd_error(STR_5800_OBJECT_IN_THE_WAY);
			}

			if (IsWaterUnderBridge(tile) && (!IsTileOwner(tile, OWNER_WATER) || HASBIT(p2, 0))) return_cmd_error(STR_1007_ALREADY_BUILT);

			if (flags & DC_EXEC) {
				if (TileHeight(tile) == 0 && HASBIT(p2, 0)) {
					SetWaterUnderBridge(tile);
				} else {
					SetCanalUnderBridge(tile, _current_player);
				}
			}
		} else {
			/* no bridge, try to clear it. */
			int32 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);

			if (CmdFailed(ret)) return ret;
			cost += ret;

			if (flags & DC_EXEC) {
				if (TileHeight(tile) == 0 && HASBIT(p2, 0)) {
					MakeWater(tile);
				} else {
					MakeCanal(tile, _current_player);
				}
			}
		}

		if (flags & DC_EXEC) {
			MarkTileDirtyByTile(tile);
			MarkTilesAroundDirty(tile);
		}

		cost += _price.clear_water;
	} END_TILE_LOOP(tile, size_x, size_y, 0);

	if (cost == 0) {
		return_cmd_error(STR_1007_ALREADY_BUILT);
	} else {
		return cost;
	}
}

static int32 ClearTile_Water(TileIndex tile, byte flags)
{
	switch (GetWaterTileType(tile)) {
		case WATER_CLEAR:
			if (flags & DC_NO_WATER) return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER);

			// Make sure no vehicle is on the tile
			if (!EnsureNoVehicle(tile)) return CMD_ERROR;

			// Make sure it's not an edge tile.
			if (!IS_INT_INSIDE(TileX(tile), 1, MapMaxX() - 1) ||
					!IS_INT_INSIDE(TileY(tile), 1, MapMaxY() - 1)) {
				return_cmd_error(STR_0002_TOO_CLOSE_TO_EDGE_OF_MAP);
			}

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

			if (flags & DC_EXEC) DoClearSquare(tile);
			return _price.clear_water;

		case WATER_COAST: {
			Slope slope = GetTileSlope(tile, NULL);

			// Make sure no vehicle is on the tile
			if (!EnsureNoVehicle(tile)) return CMD_ERROR;

			// Make sure it's not an edge tile.
			if (!IS_INT_INSIDE(TileX(tile), 1, MapMaxX() - 1) ||
					!IS_INT_INSIDE(TileY(tile), 1, MapMaxY() - 1)) {
				return_cmd_error(STR_0002_TOO_CLOSE_TO_EDGE_OF_MAP);
			}

			if (flags & DC_EXEC) DoClearSquare(tile);
			if (slope == SLOPE_N || slope == SLOPE_E || slope == SLOPE_S || slope == SLOPE_W) {
				return _price.clear_water;
			} else {
				return _price.purchase_land;
			}
		}

		case WATER_LOCK: {
			static const TileIndexDiffC _shiplift_tomiddle_offs[] = {
				{ 0,  0}, {0,  0}, { 0, 0}, {0,  0}, // middle
				{-1,  0}, {0,  1}, { 1, 0}, {0, -1}, // lower
				{ 1,  0}, {0, -1}, {-1, 0}, {0,  1}, // upper
			};

			if (flags & DC_AUTO) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
			if (_current_player == OWNER_WATER) return CMD_ERROR;
			// move to the middle tile..
			return RemoveShiplift(tile + ToTileIndexDiff(_shiplift_tomiddle_offs[GetSection(tile)]), flags);
		}

		case WATER_DEPOT:
			if (flags & DC_AUTO) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
			return RemoveShipDepot(tile, flags);

		default:
			NOT_REACHED();
			return 0;
	}

	return 0; // useless but silences warning
}

// return true if a tile is a water tile.
static bool IsWateredTile(TileIndex tile)
{
	switch (GetTileType(tile)) {
		case MP_WATER:
			if (!IsCoast(tile)) return true;

			switch (GetTileSlope(tile, NULL)) {
				case SLOPE_W:
				case SLOPE_S:
				case SLOPE_E:
				case SLOPE_N:
					return true;

				default:
					return false;
			}

		case MP_STATION:
			return IsOilRig(tile) || IsDock(tile) || IsBuoy_(tile);

		case MP_TUNNELBRIDGE:
			return IsBridge(tile) && IsBridgeMiddle(tile) && IsWaterUnderBridge(tile);

		default:
			return false;
	}
}

// draw a canal styled water tile with dikes around
void DrawCanalWater(TileIndex tile)
{
	uint wa;

	// determine the edges around with water.
	wa = IsWateredTile(TILE_ADDXY(tile, -1, 0)) << 0;
	wa += IsWateredTile(TILE_ADDXY(tile, 0, 1)) << 1;
	wa += IsWateredTile(TILE_ADDXY(tile, 1, 0)) << 2;
	wa += IsWateredTile(TILE_ADDXY(tile, 0, -1)) << 3;

	if (!(wa & 1)) DrawGroundSprite(SPR_CANALS_BASE + 57);
	if (!(wa & 2)) DrawGroundSprite(SPR_CANALS_BASE + 58);
	if (!(wa & 4)) DrawGroundSprite(SPR_CANALS_BASE + 59);
	if (!(wa & 8)) DrawGroundSprite(SPR_CANALS_BASE + 60);

	// right corner
	switch (wa & 0x03) {
		case 0: DrawGroundSprite(SPR_CANALS_BASE + 57 + 4); break;
		case 3: if (!IsWateredTile(TILE_ADDXY(tile, -1, 1))) DrawGroundSprite(SPR_CANALS_BASE + 57 + 8); break;
	}

	// bottom corner
	switch (wa & 0x06) {
		case 0: DrawGroundSprite(SPR_CANALS_BASE + 57 + 5); break;
		case 6: if (!IsWateredTile(TILE_ADDXY(tile, 1, 1))) DrawGroundSprite(SPR_CANALS_BASE + 57 + 9); break;
	}

	// left corner
	switch (wa & 0x0C) {
		case  0: DrawGroundSprite(SPR_CANALS_BASE + 57 + 6); break;
		case 12: if (!IsWateredTile(TILE_ADDXY(tile, 1, -1))) DrawGroundSprite(SPR_CANALS_BASE + 57 + 10); break;
	}

	// upper corner
	switch (wa & 0x09) {
		case 0: DrawGroundSprite(SPR_CANALS_BASE + 57 + 7); break;
		case 9: if (!IsWateredTile(TILE_ADDXY(tile, -1, -1))) DrawGroundSprite(SPR_CANALS_BASE + 57 + 11); break;
	}
}

typedef struct LocksDrawTileStruct {
	int8 delta_x, delta_y, delta_z;
	byte width, height, depth;
	SpriteID image;
} LocksDrawTileStruct;

#include "table/water_land.h"

static void DrawWaterStuff(const TileInfo *ti, const WaterDrawTileStruct *wdts,
	uint32 palette, uint base
)
{
	DrawGroundSprite(wdts++->image);

	for (; wdts->delta_x != 0x80; wdts++) {
		uint32 image = wdts->image + base;
		if (_display_opt & DO_TRANS_BUILDINGS) {
			MAKE_TRANSPARENT(image);
		} else {
			image |= palette;
		}
		AddSortableSpriteToDraw(image, ti->x + wdts->delta_x, ti->y + wdts->delta_y, wdts->width, wdts->height, wdts->unk, ti->z + wdts->delta_z);
	}
}

static void DrawTile_Water(TileInfo *ti)
{
	switch (GetWaterTileType(ti->tile)) {
		case WATER_CLEAR:
			DrawGroundSprite(SPR_FLAT_WATER_TILE);
			if (ti->z != 0 || !IsTileOwner(ti->tile, OWNER_WATER)) DrawCanalWater(ti->tile);
			break;

		case WATER_COAST:
			assert(!IsSteepSlope(ti->tileh));
			DrawGroundSprite(_water_shore_sprites[ti->tileh]);
			break;

		case WATER_LOCK: {
			const WaterDrawTileStruct *t = _shiplift_display_seq[GetSection(ti->tile)];
			DrawWaterStuff(ti, t, 0, ti->z > t[3].delta_y ? 24 : 0);
		} break;

		case WATER_DEPOT:
			DrawWaterStuff(ti, _shipdepot_display_seq[GetSection(ti->tile)], PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile)), 0);
			break;
	}
}

void DrawShipDepotSprite(int x, int y, int image)
{
	const WaterDrawTileStruct *wdts = _shipdepot_display_seq[image];

	DrawSprite(wdts++->image, x, y);

	for (; wdts->delta_x != 0x80; wdts++) {
		Point pt = RemapCoords(wdts->delta_x, wdts->delta_y, wdts->delta_z);
		DrawSprite(wdts->image + PLAYER_SPRITE_COLOR(_local_player), x + pt.x, y + pt.y);
	}
}


static uint GetSlopeZ_Water(TileIndex tile, uint x, uint y)
{
	uint z;
	uint tileh = GetTileSlope(tile, &z);

	return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
}

static Slope GetSlopeTileh_Water(TileIndex tile, Slope tileh)
{
	return tileh;
}

static void GetAcceptedCargo_Water(TileIndex tile, AcceptedCargo ac)
{
	/* not used */
}

static void GetTileDesc_Water(TileIndex tile, TileDesc *td)
{
	switch (GetWaterTileType(tile)) {
		case WATER_CLEAR:
			if (TilePixelHeight(tile) == 0 || IsTileOwner(tile, OWNER_WATER)) {
				td->str = STR_3804_WATER;
			} else {
				td->str = STR_LANDINFO_CANAL;
			}
			break;
		case WATER_COAST: td->str = STR_3805_COAST_OR_RIVERBANK; break;
		case WATER_LOCK : td->str = STR_LANDINFO_LOCK; break;
		case WATER_DEPOT: td->str = STR_3806_SHIP_DEPOT; break;
		default: assert(0); break;
	}

	td->owner = GetTileOwner(tile);
}

static void AnimateTile_Water(TileIndex tile)
{
	/* not used */
}

static void TileLoopWaterHelper(TileIndex tile, const TileIndexDiffC *offs)
{
	TileIndex target = TILE_ADD(tile, ToTileIndexDiff(offs[0]));

	// type of this tile mustn't be water already.
	if (IsTileType(target, MP_WATER)) return;

	if (TileHeight(TILE_ADD(tile, ToTileIndexDiff(offs[1]))) != 0 ||
			TileHeight(TILE_ADD(tile, ToTileIndexDiff(offs[2]))) != 0) {
		return;
	}

	if (TileHeight(TILE_ADD(tile, ToTileIndexDiff(offs[3]))) != 0 ||
			TileHeight(TILE_ADD(tile, ToTileIndexDiff(offs[4]))) != 0) {
		// make coast..
		switch (GetTileType(target)) {
			case MP_RAILWAY: {
				TrackBits tracks;
				Slope slope;

				if (!IsPlainRailTile(target)) break;

				tracks = GetTrackBits(target);
				slope = GetTileSlope(target, NULL);
				if (!(
							(slope == SLOPE_W && tracks == TRACK_BIT_RIGHT) ||
							(slope == SLOPE_S && tracks == TRACK_BIT_UPPER) ||
							(slope == SLOPE_E && tracks == TRACK_BIT_LEFT)  ||
							(slope == SLOPE_N && tracks == TRACK_BIT_LOWER)
						)) {
					break;
				}
			}
			/* FALLTHROUGH */

			case MP_CLEAR:
			case MP_TREES:
				_current_player = OWNER_WATER;
				if (!CmdFailed(DoCommand(target, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR))) {
					MakeShore(target);
					MarkTileDirtyByTile(target);
				}
				break;

			case MP_TUNNELBRIDGE:
				if (IsBridge(target) && IsBridgeMiddle(target) && IsClearUnderBridge(target)) {
					SetWaterUnderBridge(target);
					MarkTileDirtyByTile(target);
				}
				break;

			default:
				break;
		}
	} else {
		if (IsBridgeTile(target) && IsBridgeMiddle(target)) {
			if (IsWaterUnderBridge(target) ||
					(IsTransportUnderBridge(target) && GetTransportTypeUnderBridge(target) == TRANSPORT_WATER)) { // XXX does this happen at all?
				return;
			}
			SetWaterUnderBridge(target);
			MarkTileDirtyByTile(target);
			return;
		}

		_current_player = OWNER_WATER;
		{
			Vehicle *v = FindVehicleOnTileZ(target, 0);
			if (v != NULL) FloodVehicle(v);
		}

		if (!CmdFailed(DoCommand(target, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR))) {
			MakeWater(target);
			MarkTileDirtyByTile(target);
		}
	}
}

static void FloodVehicle(Vehicle *v)
{
	if (!(v->vehstatus & VS_CRASHED)) {
		uint16 pass = 0;

		if (v->type == VEH_Road) {	// flood bus/truck
			pass = 1;	// driver
			if (v->cargo_type == CT_PASSENGERS)
				pass += v->cargo_count;

			v->vehstatus |= VS_CRASHED;
			v->u.road.crashed_ctr = 2000;	// max 2220, disappear pretty fast
			RebuildVehicleLists();
		} else if (v->type == VEH_Train) {
			Vehicle *u;

			v = GetFirstVehicleInChain(v);
			u = v;
			if (IsFrontEngine(v)) pass = 4; // driver

			// crash all wagons, and count passangers
			BEGIN_ENUM_WAGONS(v)
				if (v->cargo_type == CT_PASSENGERS) pass += v->cargo_count;
				v->vehstatus |= VS_CRASHED;
			END_ENUM_WAGONS(v)

			v = u;
			v->u.rail.crash_anim_pos = 4000; // max 4440, disappear pretty fast
			RebuildVehicleLists();
		} else {
			return;
		}

		InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
		InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);

		SetDParam(0, pass);
		AddNewsItem(STR_B006_FLOOD_VEHICLE_DESTROYED,
			NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ACCIDENT, 0),
			v->index,
			0);
		CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
		SndPlayVehicleFx(SND_12_EXPLOSION, v);
	}
}

// called from tunnelbridge_cmd, and by TileLoop_Industry()
void TileLoop_Water(TileIndex tile)
{
	static const TileIndexDiffC _tile_loop_offs_array[][5] = {
		// tile to mod              shore?    shore?
		{{-1,  0}, {0, 0}, {0, 1}, {-1,  0}, {-1,  1}},
		{{ 0,  1}, {0, 1}, {1, 1}, { 0,  2}, { 1,  2}},
		{{ 1,  0}, {1, 0}, {1, 1}, { 2,  0}, { 2,  1}},
		{{ 0, -1}, {0, 0}, {1, 0}, { 0, -1}, { 1, -1}}
	};

	/* Ensure sea-level canals do not flood */
	if ((IsTileType(tile, MP_WATER) || IsTileType(tile, MP_TUNNELBRIDGE)) &&
			!IsTileOwner(tile, OWNER_WATER)) return;

	if (IS_INT_INSIDE(TileX(tile), 1, MapSizeX() - 3 + 1) &&
			IS_INT_INSIDE(TileY(tile), 1, MapSizeY() - 3 + 1)) {
		uint i;

		for (i = 0; i != lengthof(_tile_loop_offs_array); i++) {
			TileLoopWaterHelper(tile, _tile_loop_offs_array[i]);
		}
	}
	// _current_player can be changed by TileLoopWaterHelper.. reset it back
	//   here
	_current_player = OWNER_NONE;

	// edges
	if (TileX(tile) == 0 && IS_INT_INSIDE(TileY(tile), 1, MapSizeY() - 3 + 1)) { //NE
		TileLoopWaterHelper(tile, _tile_loop_offs_array[2]);
	}

	if (TileX(tile) == MapSizeX() - 2 && IS_INT_INSIDE(TileY(tile), 1, MapSizeY() - 3 + 1)) { //SW
		TileLoopWaterHelper(tile, _tile_loop_offs_array[0]);
	}

	if (TileY(tile) == 0 && IS_INT_INSIDE(TileX(tile), 1, MapSizeX() - 3 + 1)) { //NW
		TileLoopWaterHelper(tile, _tile_loop_offs_array[1]);
	}

	if (TileY(tile) == MapSizeY() - 2 && IS_INT_INSIDE(TileX(tile), 1, MapSizeX() - 3 + 1)) { //SE
		TileLoopWaterHelper(tile, _tile_loop_offs_array[3]);
	}
}

static uint32 GetTileTrackStatus_Water(TileIndex tile, TransportType mode)
{
	static const byte coast_tracks[] = {0, 32, 4, 0, 16, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0};

	TrackBits ts;

	if (mode != TRANSPORT_WATER) return 0;

	switch (GetWaterTileType(tile)) {
		case WATER_CLEAR: ts = TRACK_BIT_ALL; break;
		case WATER_COAST: ts = coast_tracks[GetTileSlope(tile, NULL) & 0xF]; break;
		case WATER_LOCK:  ts = AxisToTrackBits(DiagDirToAxis(GetLockDirection(tile))); break;
		case WATER_DEPOT: ts = AxisToTrackBits(GetShipDepotAxis(tile)); break;
		default: return 0;
	}
	if (TileX(tile) == 0) {
		// NE border: remove tracks that connects NE tile edge
		ts &= ~(TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_RIGHT);
	}
	if (TileY(tile) == 0) {
		// NW border: remove tracks that connects NW tile edge
		ts &= ~(TRACK_BIT_Y | TRACK_BIT_LEFT | TRACK_BIT_UPPER);
	}
	return ts * 0x101;
}

extern void ShowShipDepotWindow(TileIndex tile);

static void ClickTile_Water(TileIndex tile)
{
	if (GetWaterTileType(tile) == WATER_DEPOT) {
		TileIndex tile2 = GetOtherShipDepotTile(tile);

		ShowShipDepotWindow(tile < tile2 ? tile : tile2);
	}
}

static void ChangeTileOwner_Water(TileIndex tile, PlayerID old_player, PlayerID new_player)
{
	if (!IsTileOwner(tile, old_player)) return;

	if (new_player != OWNER_SPECTATOR) {
		SetTileOwner(tile, new_player);
	} else {
		DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);
	}
}

static uint32 VehicleEnter_Water(Vehicle *v, TileIndex tile, int x, int y)
{
	return 0;
}


const TileTypeProcs _tile_type_water_procs = {
	DrawTile_Water,           /* draw_tile_proc */
	GetSlopeZ_Water,          /* get_slope_z_proc */
	ClearTile_Water,          /* clear_tile_proc */
	GetAcceptedCargo_Water,   /* get_accepted_cargo_proc */
	GetTileDesc_Water,        /* get_tile_desc_proc */
	GetTileTrackStatus_Water, /* get_tile_track_status_proc */
	ClickTile_Water,          /* click_tile_proc */
	AnimateTile_Water,        /* animate_tile_proc */
	TileLoop_Water,           /* tile_loop_clear */
	ChangeTileOwner_Water,    /* change_tile_owner_clear */
	NULL,                     /* get_produced_cargo_proc */
	VehicleEnter_Water,       /* vehicle_enter_tile_proc */
	GetSlopeTileh_Water,      /* get_slope_tileh_proc */
};