OpenTTD
rail_cmd.cpp
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1 /* $Id$ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8  */
9 
12 #include "stdafx.h"
13 #include "cmd_helper.h"
14 #include "viewport_func.h"
15 #include "command_func.h"
16 #include "depot_base.h"
18 #include "newgrf_debug.h"
19 #include "newgrf_railtype.h"
20 #include "train.h"
21 #include "autoslope.h"
22 #include "water.h"
23 #include "tunnelbridge_map.h"
24 #include "vehicle_func.h"
25 #include "sound_func.h"
26 #include "tunnelbridge.h"
27 #include "elrail_func.h"
28 #include "town.h"
29 #include "pbs.h"
30 #include "company_base.h"
31 #include "core/backup_type.hpp"
32 #include "date_func.h"
33 #include "strings_func.h"
34 #include "company_gui.h"
35 #include "object_map.h"
36 
37 #include "table/strings.h"
38 #include "table/railtypes.h"
39 #include "table/track_land.h"
40 
41 #include "safeguards.h"
42 
45 
46 RailtypeInfo _railtypes[RAILTYPE_END];
47 RailType _sorted_railtypes[RAILTYPE_END];
48 uint8 _sorted_railtypes_size;
49 RailTypes _railtypes_hidden_mask;
50 
53  SIGNAL_TO_SOUTHWEST,
54  SIGNAL_TO_NORTHEAST,
55  SIGNAL_TO_SOUTHEAST,
56  SIGNAL_TO_NORTHWEST,
57  SIGNAL_TO_EAST,
58  SIGNAL_TO_WEST,
59  SIGNAL_TO_SOUTH,
60  SIGNAL_TO_NORTH,
61 };
62 
67 {
68  assert_compile(lengthof(_original_railtypes) <= lengthof(_railtypes));
69 
70  uint i = 0;
71  for (; i < lengthof(_original_railtypes); i++) _railtypes[i] = _original_railtypes[i];
72 
73  static const RailtypeInfo empty_railtype = {
74  {0,0,0,0,0,0,0,0,0,0,0,0},
75  {0,0,0,0,0,0,0,0,{}},
76  {0,0,0,0,0,0,0,0},
77  {0,0,0,0,0,0},
78  0, RAILTYPES_NONE, RAILTYPES_NONE, 0, 0, 0, RTFB_NONE, 0, 0, 0, 0, 0,
80  {}, {} };
81  for (; i < lengthof(_railtypes); i++) _railtypes[i] = empty_railtype;
82 
83  _railtypes_hidden_mask = RAILTYPES_NONE;
84 }
85 
86 void ResolveRailTypeGUISprites(RailtypeInfo *rti)
87 {
89  if (cursors_base != 0) {
90  rti->gui_sprites.build_ns_rail = cursors_base + 0;
91  rti->gui_sprites.build_x_rail = cursors_base + 1;
92  rti->gui_sprites.build_ew_rail = cursors_base + 2;
93  rti->gui_sprites.build_y_rail = cursors_base + 3;
94  rti->gui_sprites.auto_rail = cursors_base + 4;
95  rti->gui_sprites.build_depot = cursors_base + 5;
96  rti->gui_sprites.build_tunnel = cursors_base + 6;
97  rti->gui_sprites.convert_rail = cursors_base + 7;
98  rti->cursor.rail_ns = cursors_base + 8;
99  rti->cursor.rail_swne = cursors_base + 9;
100  rti->cursor.rail_ew = cursors_base + 10;
101  rti->cursor.rail_nwse = cursors_base + 11;
102  rti->cursor.autorail = cursors_base + 12;
103  rti->cursor.depot = cursors_base + 13;
104  rti->cursor.tunnel = cursors_base + 14;
105  rti->cursor.convert = cursors_base + 15;
106  }
107 
108  /* Array of default GUI signal sprite numbers. */
109  const SpriteID _signal_lookup[2][SIGTYPE_END] = {
110  {SPR_IMG_SIGNAL_ELECTRIC_NORM, SPR_IMG_SIGNAL_ELECTRIC_ENTRY, SPR_IMG_SIGNAL_ELECTRIC_EXIT,
111  SPR_IMG_SIGNAL_ELECTRIC_COMBO, SPR_IMG_SIGNAL_ELECTRIC_PBS, SPR_IMG_SIGNAL_ELECTRIC_PBS_OWAY},
112 
113  {SPR_IMG_SIGNAL_SEMAPHORE_NORM, SPR_IMG_SIGNAL_SEMAPHORE_ENTRY, SPR_IMG_SIGNAL_SEMAPHORE_EXIT,
114  SPR_IMG_SIGNAL_SEMAPHORE_COMBO, SPR_IMG_SIGNAL_SEMAPHORE_PBS, SPR_IMG_SIGNAL_SEMAPHORE_PBS_OWAY},
115  };
116 
117  for (SignalType type = SIGTYPE_NORMAL; type < SIGTYPE_END; type = (SignalType)(type + 1)) {
118  for (SignalVariant var = SIG_ELECTRIC; var <= SIG_SEMAPHORE; var = (SignalVariant)(var + 1)) {
119  SpriteID red = GetCustomSignalSprite(rti, INVALID_TILE, type, var, SIGNAL_STATE_RED, true);
120  SpriteID green = GetCustomSignalSprite(rti, INVALID_TILE, type, var, SIGNAL_STATE_GREEN, true);
121  rti->gui_sprites.signals[type][var][0] = (red != 0) ? red + SIGNAL_TO_SOUTH : _signal_lookup[var][type];
122  rti->gui_sprites.signals[type][var][1] = (green != 0) ? green + SIGNAL_TO_SOUTH : _signal_lookup[var][type] + 1;
123  }
124  }
125 }
126 
133 static int CDECL CompareRailTypes(const RailType *first, const RailType *second)
134 {
135  return GetRailTypeInfo(*first)->sorting_order - GetRailTypeInfo(*second)->sorting_order;
136 }
137 
142 {
143  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
144  RailtypeInfo *rti = &_railtypes[rt];
145  ResolveRailTypeGUISprites(rti);
146  if (HasBit(rti->flags, RTF_HIDDEN)) SetBit(_railtypes_hidden_mask, rt);
147  }
148 
149  _sorted_railtypes_size = 0;
150  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
151  if (_railtypes[rt].label != 0 && !HasBit(_railtypes_hidden_mask, rt)) {
152  _sorted_railtypes[_sorted_railtypes_size++] = rt;
153  }
154  }
155  QSortT(_sorted_railtypes, _sorted_railtypes_size, CompareRailTypes);
156 }
157 
161 RailType AllocateRailType(RailTypeLabel label)
162 {
163  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
164  RailtypeInfo *rti = &_railtypes[rt];
165 
166  if (rti->label == 0) {
167  /* Set up new rail type */
169  rti->label = label;
170  rti->alternate_labels.Clear();
171 
172  /* Make us compatible with ourself. */
173  rti->powered_railtypes = (RailTypes)(1LL << rt);
174  rti->compatible_railtypes = (RailTypes)(1LL << rt);
175 
176  /* We also introduce ourself. */
177  rti->introduces_railtypes = (RailTypes)(1LL << rt);
178 
179  /* Default sort order; order of allocation, but with some
180  * offsets so it's easier for NewGRF to pick a spot without
181  * changing the order of other (original) rail types.
182  * The << is so you can place other railtypes in between the
183  * other railtypes, the 7 is to be able to place something
184  * before the first (default) rail type. */
185  rti->sorting_order = rt << 4 | 7;
186  return rt;
187  }
188  }
189 
190  return INVALID_RAILTYPE;
191 }
192 
193 static const byte _track_sloped_sprites[14] = {
194  14, 15, 22, 13,
195  0, 21, 17, 12,
196  23, 0, 18, 20,
197  19, 16
198 };
199 
200 
201 /* 4
202  * ---------
203  * |\ /|
204  * | \ 1/ |
205  * | \ / |
206  * | \ / |
207  * 16| \ |32
208  * | / \2 |
209  * | / \ |
210  * | / \ |
211  * |/ \|
212  * ---------
213  * 8
214  */
215 
216 
217 
218 /* MAP2 byte: abcd???? => Signal On? Same coding as map3lo
219  * MAP3LO byte: abcd???? => Signal Exists?
220  * a and b are for diagonals, upper and left,
221  * one for each direction. (ie a == NE->SW, b ==
222  * SW->NE, or v.v., I don't know. b and c are
223  * similar for lower and right.
224  * MAP2 byte: ????abcd => Type of ground.
225  * MAP3LO byte: ????abcd => Type of rail.
226  * MAP5: 00abcdef => rail
227  * 01abcdef => rail w/ signals
228  * 10uuuuuu => unused
229  * 11uuuudd => rail depot
230  */
231 
241 {
242  TrackBits rail_bits = TrackToTrackBits(track);
243  return EnsureNoTrainOnTrackBits(tile, rail_bits);
244 }
245 
253 static CommandCost CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags)
254 {
255  if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION);
256 
257  /* So, we have a tile with tracks on it (and possibly signals). Let's see
258  * what tracks first */
259  TrackBits current = GetTrackBits(tile); // The current track layout.
260  TrackBits future = current | to_build; // The track layout we want to build.
261 
262  /* Are we really building something new? */
263  if (current == future) {
264  /* Nothing new is being built */
265  return_cmd_error(STR_ERROR_ALREADY_BUILT);
266  }
267 
268  /* Let's see if we may build this */
269  if ((flags & DC_NO_RAIL_OVERLAP) || HasSignals(tile)) {
270  /* If we are not allowed to overlap (flag is on for ai companies or we have
271  * signals on the tile), check that */
272  if (future != TRACK_BIT_HORZ && future != TRACK_BIT_VERT) {
273  return_cmd_error((flags & DC_NO_RAIL_OVERLAP) ? STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION : STR_ERROR_MUST_REMOVE_SIGNALS_FIRST);
274  }
275  }
276  /* Normally, we may overlap and any combination is valid */
277  return CommandCost();
278 }
279 
280 
286  TRACK_BIT_X,
287 
290  TRACK_BIT_Y,
292 
294  TRACK_BIT_Y,
297 
298  TRACK_BIT_X,
301 };
302 
308  TRACK_BIT_Y | TRACK_BIT_LOWER | TRACK_BIT_LEFT,
309 
312  TRACK_BIT_X | TRACK_BIT_LOWER | TRACK_BIT_RIGHT,
314 
316  TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_LEFT,
319 
320  TRACK_BIT_Y | TRACK_BIT_UPPER | TRACK_BIT_RIGHT,
322  TRACK_BIT_ALL
323 };
324 
333 {
334  if (bits == TRACK_BIT_NONE) return FOUNDATION_NONE;
335 
336  if (IsSteepSlope(tileh)) {
337  /* Test for inclined foundations */
338  if (bits == TRACK_BIT_X) return FOUNDATION_INCLINED_X;
339  if (bits == TRACK_BIT_Y) return FOUNDATION_INCLINED_Y;
340 
341  /* Get higher track */
342  Corner highest_corner = GetHighestSlopeCorner(tileh);
343  TrackBits higher_track = CornerToTrackBits(highest_corner);
344 
345  /* Only higher track? */
346  if (bits == higher_track) return HalftileFoundation(highest_corner);
347 
348  /* Overlap with higher track? */
349  if (TracksOverlap(bits | higher_track)) return FOUNDATION_INVALID;
350 
351  /* either lower track or both higher and lower track */
352  return ((bits & higher_track) != 0 ? FOUNDATION_STEEP_BOTH : FOUNDATION_STEEP_LOWER);
353  } else {
354  if ((~_valid_tracks_without_foundation[tileh] & bits) == 0) return FOUNDATION_NONE;
355 
356  bool valid_on_leveled = ((~_valid_tracks_on_leveled_foundation[tileh] & bits) == 0);
357 
358  Corner track_corner;
359  switch (bits) {
360  case TRACK_BIT_LEFT: track_corner = CORNER_W; break;
361  case TRACK_BIT_LOWER: track_corner = CORNER_S; break;
362  case TRACK_BIT_RIGHT: track_corner = CORNER_E; break;
363  case TRACK_BIT_UPPER: track_corner = CORNER_N; break;
364 
365  case TRACK_BIT_HORZ:
366  if (tileh == SLOPE_N) return HalftileFoundation(CORNER_N);
367  if (tileh == SLOPE_S) return HalftileFoundation(CORNER_S);
368  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
369 
370  case TRACK_BIT_VERT:
371  if (tileh == SLOPE_W) return HalftileFoundation(CORNER_W);
372  if (tileh == SLOPE_E) return HalftileFoundation(CORNER_E);
373  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
374 
375  case TRACK_BIT_X:
377  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
378 
379  case TRACK_BIT_Y:
381  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
382 
383  default:
384  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
385  }
386  /* Single diagonal track */
387 
388  /* Track must be at least valid on leveled foundation */
389  if (!valid_on_leveled) return FOUNDATION_INVALID;
390 
391  /* If slope has three raised corners, build leveled foundation */
393 
394  /* If neighboured corners of track_corner are lowered, build halftile foundation */
395  if ((tileh & SlopeWithThreeCornersRaised(OppositeCorner(track_corner))) == SlopeWithOneCornerRaised(track_corner)) return HalftileFoundation(track_corner);
396 
397  /* else special anti-zig-zag foundation */
398  return SpecialRailFoundation(track_corner);
399  }
400 }
401 
402 
412 static CommandCost CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile)
413 {
414  /* don't allow building on the lower side of a coast */
415  if (GetFloodingBehaviour(tile) != FLOOD_NONE) {
416  if (!IsSteepSlope(tileh) && ((~_valid_tracks_on_leveled_foundation[tileh] & (rail_bits | existing)) != 0)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
417  }
418 
419  Foundation f_new = GetRailFoundation(tileh, rail_bits | existing);
420 
421  /* check track/slope combination */
422  if ((f_new == FOUNDATION_INVALID) ||
424  return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
425  }
426 
427  Foundation f_old = GetRailFoundation(tileh, existing);
428  return CommandCost(EXPENSES_CONSTRUCTION, f_new != f_old ? _price[PR_BUILD_FOUNDATION] : (Money)0);
429 }
430 
431 /* Validate functions for rail building */
432 static inline bool ValParamTrackOrientation(Track track)
433 {
434  return IsValidTrack(track);
435 }
436 
446 CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
447 {
448  RailType railtype = Extract<RailType, 0, 6>(p1);
449  Track track = Extract<Track, 0, 3>(p2);
451 
452  if (!ValParamRailtype(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR;
453 
454  Slope tileh = GetTileSlope(tile);
455  TrackBits trackbit = TrackToTrackBits(track);
456 
457  switch (GetTileType(tile)) {
458  case MP_RAILWAY: {
459  CommandCost ret = CheckTileOwnership(tile);
460  if (ret.Failed()) return ret;
461 
462  if (!IsPlainRail(tile)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message
463 
464  if (!IsCompatibleRail(GetRailType(tile), railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION);
465 
466  ret = CheckTrackCombination(tile, trackbit, flags);
467  if (ret.Succeeded()) ret = EnsureNoTrainOnTrack(tile, track);
468  if (ret.Failed()) return ret;
469 
470  ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile);
471  if (ret.Failed()) return ret;
472  cost.AddCost(ret);
473 
474  /* If the rail types don't match, try to convert only if engines of
475  * the new rail type are not powered on the present rail type and engines of
476  * the present rail type are powered on the new rail type. */
477  if (GetRailType(tile) != railtype && !HasPowerOnRail(railtype, GetRailType(tile))) {
478  if (HasPowerOnRail(GetRailType(tile), railtype)) {
479  ret = DoCommand(tile, tile, railtype, flags, CMD_CONVERT_RAIL);
480  if (ret.Failed()) return ret;
481  cost.AddCost(ret);
482  } else {
483  return CMD_ERROR;
484  }
485  }
486 
487  if (flags & DC_EXEC) {
488  SetRailGroundType(tile, RAIL_GROUND_BARREN);
489  TrackBits bits = GetTrackBits(tile);
490  SetTrackBits(tile, bits | trackbit);
491  /* Subtract old infrastructure count. */
492  uint pieces = CountBits(bits);
493  if (TracksOverlap(bits)) pieces *= pieces;
494  Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] -= pieces;
495  /* Add new infrastructure count. */
496  pieces = CountBits(bits | trackbit);
497  if (TracksOverlap(bits | trackbit)) pieces *= pieces;
498  Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] += pieces;
500  }
501  break;
502  }
503 
504  case MP_ROAD: {
505  /* Level crossings may only be built on these slopes */
506  if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
507 
509  if (ret.Failed()) return ret;
510 
511  if (IsNormalRoad(tile)) {
512  if (HasRoadWorks(tile)) return_cmd_error(STR_ERROR_ROAD_WORKS_IN_PROGRESS);
513 
514  if (GetDisallowedRoadDirections(tile) != DRD_NONE) return_cmd_error(STR_ERROR_CROSSING_ON_ONEWAY_ROAD);
515 
516  if (RailNoLevelCrossings(railtype)) return_cmd_error(STR_ERROR_CROSSING_DISALLOWED);
517 
518  RoadTypes roadtypes = GetRoadTypes(tile);
519  RoadBits road = GetRoadBits(tile, ROADTYPE_ROAD);
520  RoadBits tram = GetRoadBits(tile, ROADTYPE_TRAM);
521  if ((track == TRACK_X && ((road | tram) & ROAD_X) == 0) ||
522  (track == TRACK_Y && ((road | tram) & ROAD_Y) == 0)) {
523  Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
524  Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
525  /* Disallow breaking end-of-line of someone else
526  * so trams can still reverse on this tile. */
527  if (Company::IsValidID(tram_owner) && HasExactlyOneBit(tram)) {
528  CommandCost ret = CheckOwnership(tram_owner);
529  if (ret.Failed()) return ret;
530  }
531  /* Crossings must always have a road... */
532  uint num_new_road_pieces = 2 - CountBits(road);
533  if (road == ROAD_NONE) road_owner = _current_company;
534  roadtypes |= ROADTYPES_ROAD;
535  /* ...but tram is not required. */
536  uint num_new_tram_pieces = (tram != ROAD_NONE) ? 2 - CountBits(tram) : 0;
537 
538  cost.AddCost((num_new_road_pieces + num_new_tram_pieces) * _price[PR_BUILD_ROAD]);
539 
540  if (flags & DC_EXEC) {
541  MakeRoadCrossing(tile, road_owner, tram_owner, _current_company, (track == TRACK_X ? AXIS_Y : AXIS_X), railtype, roadtypes, GetTownIndex(tile));
542  UpdateLevelCrossing(tile, false);
543  Company::Get(_current_company)->infrastructure.rail[railtype] += LEVELCROSSING_TRACKBIT_FACTOR;
545  if (num_new_road_pieces > 0 && Company::IsValidID(road_owner)) {
546  Company::Get(road_owner)->infrastructure.road[ROADTYPE_ROAD] += num_new_road_pieces;
548  }
549  if (num_new_tram_pieces > 0 && Company::IsValidID(tram_owner)) {
550  Company::Get(tram_owner)->infrastructure.road[ROADTYPE_TRAM] += num_new_tram_pieces;
552  }
553  }
554  break;
555  }
556  }
557 
558  if (IsLevelCrossing(tile) && GetCrossingRailBits(tile) == trackbit) {
559  return_cmd_error(STR_ERROR_ALREADY_BUILT);
560  }
561  FALLTHROUGH;
562  }
563 
564  default: {
565  /* Will there be flat water on the lower halftile? */
566  bool water_ground = IsTileType(tile, MP_WATER) && IsSlopeWithOneCornerRaised(tileh);
567 
568  CommandCost ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile);
569  if (ret.Failed()) return ret;
570  cost.AddCost(ret);
571 
572  ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
573  if (ret.Failed()) return ret;
574  cost.AddCost(ret);
575 
576  if (water_ground) {
577  cost.AddCost(-_price[PR_CLEAR_WATER]);
578  cost.AddCost(_price[PR_CLEAR_ROUGH]);
579  }
580 
581  if (flags & DC_EXEC) {
582  MakeRailNormal(tile, _current_company, trackbit, railtype);
583  if (water_ground) SetRailGroundType(tile, RAIL_GROUND_WATER);
584  Company::Get(_current_company)->infrastructure.rail[railtype]++;
586  }
587  break;
588  }
589  }
590 
591  if (flags & DC_EXEC) {
592  MarkTileDirtyByTile(tile);
594  YapfNotifyTrackLayoutChange(tile, track);
595  }
596 
597  cost.AddCost(RailBuildCost(railtype));
598  return cost;
599 }
600 
610 CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
611 {
612  Track track = Extract<Track, 0, 3>(p2);
614  bool crossing = false;
615 
616  if (!ValParamTrackOrientation(track)) return CMD_ERROR;
617  TrackBits trackbit = TrackToTrackBits(track);
618 
619  /* Need to read tile owner now because it may change when the rail is removed
620  * Also, in case of floods, _current_company != owner
621  * There may be invalid tiletype even in exec run (when removing long track),
622  * so do not call GetTileOwner(tile) in any case here */
623  Owner owner = INVALID_OWNER;
624 
625  Train *v = NULL;
626 
627  switch (GetTileType(tile)) {
628  case MP_ROAD: {
629  if (!IsLevelCrossing(tile) || GetCrossingRailBits(tile) != trackbit) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
630 
631  if (_current_company != OWNER_WATER) {
632  CommandCost ret = CheckTileOwnership(tile);
633  if (ret.Failed()) return ret;
634  }
635 
636  if (!(flags & DC_BANKRUPT)) {
638  if (ret.Failed()) return ret;
639  }
640 
641  cost.AddCost(RailClearCost(GetRailType(tile)));
642 
643  if (flags & DC_EXEC) {
644  if (HasReservedTracks(tile, trackbit)) {
645  v = GetTrainForReservation(tile, track);
646  if (v != NULL) FreeTrainTrackReservation(v);
647  }
648  owner = GetTileOwner(tile);
649  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= LEVELCROSSING_TRACKBIT_FACTOR;
652  DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile);
653  }
654  break;
655  }
656 
657  case MP_RAILWAY: {
658  TrackBits present;
659  /* There are no rails present at depots. */
660  if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
661 
662  if (_current_company != OWNER_WATER) {
663  CommandCost ret = CheckTileOwnership(tile);
664  if (ret.Failed()) return ret;
665  }
666 
667  CommandCost ret = EnsureNoTrainOnTrack(tile, track);
668  if (ret.Failed()) return ret;
669 
670  present = GetTrackBits(tile);
671  if ((present & trackbit) == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
672  if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true;
673 
674  cost.AddCost(RailClearCost(GetRailType(tile)));
675 
676  /* Charge extra to remove signals on the track, if they are there */
677  if (HasSignalOnTrack(tile, track)) {
678  cost.AddCost(DoCommand(tile, track, 0, flags, CMD_REMOVE_SIGNALS));
679  }
680 
681  if (flags & DC_EXEC) {
682  if (HasReservedTracks(tile, trackbit)) {
683  v = GetTrainForReservation(tile, track);
684  if (v != NULL) FreeTrainTrackReservation(v);
685  }
686 
687  owner = GetTileOwner(tile);
688 
689  /* Subtract old infrastructure count. */
690  uint pieces = CountBits(present);
691  if (TracksOverlap(present)) pieces *= pieces;
692  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= pieces;
693  /* Add new infrastructure count. */
694  present ^= trackbit;
695  pieces = CountBits(present);
696  if (TracksOverlap(present)) pieces *= pieces;
697  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] += pieces;
699 
700  if (present == 0) {
701  Slope tileh = GetTileSlope(tile);
702  /* If there is flat water on the lower halftile, convert the tile to shore so the water remains */
703  if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh)) {
704  MakeShore(tile);
705  } else {
706  DoClearSquare(tile);
707  }
708  DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile);
709  } else {
710  SetTrackBits(tile, present);
711  SetTrackReservation(tile, GetRailReservationTrackBits(tile) & present);
712  }
713  }
714  break;
715  }
716 
717  default: return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
718  }
719 
720  if (flags & DC_EXEC) {
721  /* if we got that far, 'owner' variable is set correctly */
722  assert(Company::IsValidID(owner));
723 
724  MarkTileDirtyByTile(tile);
725  if (crossing) {
726  /* crossing is set when only TRACK_BIT_X and TRACK_BIT_Y are set. As we
727  * are removing one of these pieces, we'll need to update signals for
728  * both directions explicitly, as after the track is removed it won't
729  * 'connect' with the other piece. */
730  AddTrackToSignalBuffer(tile, TRACK_X, owner);
731  AddTrackToSignalBuffer(tile, TRACK_Y, owner);
734  } else {
735  AddTrackToSignalBuffer(tile, track, owner);
736  YapfNotifyTrackLayoutChange(tile, track);
737  }
738 
739  if (v != NULL) TryPathReserve(v, true);
740  }
741 
742  return cost;
743 }
744 
745 
754 {
755  assert(IsPlainRailTile(t));
756 
757  bool flooded = false;
758  if (GetRailGroundType(t) == RAIL_GROUND_WATER) return flooded;
759 
760  Slope tileh = GetTileSlope(t);
761  TrackBits rail_bits = GetTrackBits(t);
762 
763  if (IsSlopeWithOneCornerRaised(tileh)) {
765 
766  TrackBits to_remove = lower_track & rail_bits;
767  if (to_remove != 0) {
768  Backup<CompanyByte> cur_company(_current_company, OWNER_WATER, FILE_LINE);
769  flooded = DoCommand(t, 0, FIND_FIRST_BIT(to_remove), DC_EXEC, CMD_REMOVE_SINGLE_RAIL).Succeeded();
770  cur_company.Restore();
771  if (!flooded) return flooded; // not yet floodable
772  rail_bits = rail_bits & ~to_remove;
773  if (rail_bits == 0) {
774  MakeShore(t);
776  return flooded;
777  }
778  }
779 
780  if (IsNonContinuousFoundation(GetRailFoundation(tileh, rail_bits))) {
781  flooded = true;
782  SetRailGroundType(t, RAIL_GROUND_WATER);
784  }
785  } else {
786  /* Make shore on steep slopes and 'three-corners-raised'-slopes. */
787  if (ApplyFoundationToSlope(GetRailFoundation(tileh, rail_bits), &tileh) == 0) {
788  if (IsSteepSlope(tileh) || IsSlopeWithThreeCornersRaised(tileh)) {
789  flooded = true;
790  SetRailGroundType(t, RAIL_GROUND_WATER);
792  }
793  }
794  }
795  return flooded;
796 }
797 
798 static const TileIndexDiffC _trackdelta[] = {
799  { -1, 0 }, { 0, 1 }, { -1, 0 }, { 0, 1 }, { 1, 0 }, { 0, 1 },
800  { 0, 0 },
801  { 0, 0 },
802  { 1, 0 }, { 0, -1 }, { 0, -1 }, { 1, 0 }, { 0, -1 }, { -1, 0 },
803  { 0, 0 },
804  { 0, 0 }
805 };
806 
807 
808 static CommandCost ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileIndex end)
809 {
810  int x = TileX(start);
811  int y = TileY(start);
812  int ex = TileX(end);
813  int ey = TileY(end);
814 
815  if (!ValParamTrackOrientation(TrackdirToTrack(*trackdir))) return CMD_ERROR;
816 
817  /* calculate delta x,y from start to end tile */
818  int dx = ex - x;
819  int dy = ey - y;
820 
821  /* calculate delta x,y for the first direction */
822  int trdx = _trackdelta[*trackdir].x;
823  int trdy = _trackdelta[*trackdir].y;
824 
825  if (!IsDiagonalTrackdir(*trackdir)) {
826  trdx += _trackdelta[*trackdir ^ 1].x;
827  trdy += _trackdelta[*trackdir ^ 1].y;
828  }
829 
830  /* validate the direction */
831  while ((trdx <= 0 && dx > 0) ||
832  (trdx >= 0 && dx < 0) ||
833  (trdy <= 0 && dy > 0) ||
834  (trdy >= 0 && dy < 0)) {
835  if (!HasBit(*trackdir, 3)) { // first direction is invalid, try the other
836  SetBit(*trackdir, 3); // reverse the direction
837  trdx = -trdx;
838  trdy = -trdy;
839  } else { // other direction is invalid too, invalid drag
840  return CMD_ERROR;
841  }
842  }
843 
844  /* (for diagonal tracks, this is already made sure of by above test), but:
845  * for non-diagonal tracks, check if the start and end tile are on 1 line */
846  if (!IsDiagonalTrackdir(*trackdir)) {
847  trdx = _trackdelta[*trackdir].x;
848  trdy = _trackdelta[*trackdir].y;
849  if (abs(dx) != abs(dy) && abs(dx) + abs(trdy) != abs(dy) + abs(trdx)) return CMD_ERROR;
850  }
851 
852  return CommandCost();
853 }
854 
868 static CommandCost CmdRailTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
869 {
871  Track track = Extract<Track, 6, 3>(p2);
872  bool remove = HasBit(p2, 9);
873  RailType railtype = Extract<RailType, 0, 6>(p2);
874 
875  if ((!remove && !ValParamRailtype(railtype)) || !ValParamTrackOrientation(track)) return CMD_ERROR;
876  if (p1 >= MapSize()) return CMD_ERROR;
877  TileIndex end_tile = p1;
878  Trackdir trackdir = TrackToTrackdir(track);
879 
880  CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile);
881  if (ret.Failed()) return ret;
882 
883  bool had_success = false;
884  CommandCost last_error = CMD_ERROR;
885  for (;;) {
886  CommandCost ret = DoCommand(tile, remove ? 0 : railtype, TrackdirToTrack(trackdir), flags, remove ? CMD_REMOVE_SINGLE_RAIL : CMD_BUILD_SINGLE_RAIL);
887 
888  if (ret.Failed()) {
889  last_error = ret;
890  if (last_error.GetErrorMessage() != STR_ERROR_ALREADY_BUILT && !remove) {
891  if (HasBit(p2, 10)) return last_error;
892  break;
893  }
894 
895  /* Ownership errors are more important. */
896  if (last_error.GetErrorMessage() == STR_ERROR_OWNED_BY && remove) break;
897  } else {
898  had_success = true;
899  total_cost.AddCost(ret);
900  }
901 
902  if (tile == end_tile) break;
903 
904  tile += ToTileIndexDiff(_trackdelta[trackdir]);
905 
906  /* toggle railbit for the non-diagonal tracks */
907  if (!IsDiagonalTrackdir(trackdir)) ToggleBit(trackdir, 0);
908  }
909 
910  if (had_success) return total_cost;
911  return last_error;
912 }
913 
928 CommandCost CmdBuildRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
929 {
930  return CmdRailTrackHelper(tile, flags, p1, ClrBit(p2, 9), text);
931 }
932 
947 CommandCost CmdRemoveRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
948 {
949  return CmdRailTrackHelper(tile, flags, p1, SetBit(p2, 9), text);
950 }
951 
964 CommandCost CmdBuildTrainDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
965 {
966  /* check railtype and valid direction for depot (0 through 3), 4 in total */
967  RailType railtype = Extract<RailType, 0, 6>(p1);
968  if (!ValParamRailtype(railtype)) return CMD_ERROR;
969 
970  Slope tileh = GetTileSlope(tile);
971 
972  DiagDirection dir = Extract<DiagDirection, 0, 2>(p2);
973 
975 
976  /* Prohibit construction if
977  * The tile is non-flat AND
978  * 1) build-on-slopes is disabled
979  * 2) the tile is steep i.e. spans two height levels
980  * 3) the exit points in the wrong direction
981  */
982 
983  if (tileh != SLOPE_FLAT) {
985  return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
986  }
987  cost.AddCost(_price[PR_BUILD_FOUNDATION]);
988  }
989 
990  cost.AddCost(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR));
991  if (cost.Failed()) return cost;
992 
993  if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
994 
995  if (!Depot::CanAllocateItem()) return CMD_ERROR;
996 
997  if (flags & DC_EXEC) {
998  Depot *d = new Depot(tile);
999  d->build_date = _date;
1000 
1001  MakeRailDepot(tile, _current_company, d->index, dir, railtype);
1002  MarkTileDirtyByTile(tile);
1003  MakeDefaultName(d);
1004 
1005  Company::Get(_current_company)->infrastructure.rail[railtype]++;
1007 
1010  }
1011 
1012  cost.AddCost(_price[PR_BUILD_DEPOT_TRAIN]);
1013  cost.AddCost(RailBuildCost(railtype));
1014  return cost;
1015 }
1016 
1038 CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1039 {
1040  Track track = Extract<Track, 0, 3>(p1);
1041  bool ctrl_pressed = HasBit(p1, 3); // was the CTRL button pressed
1042  SignalVariant sigvar = (ctrl_pressed ^ HasBit(p1, 4)) ? SIG_SEMAPHORE : SIG_ELECTRIC; // the signal variant of the new signal
1043  SignalType sigtype = Extract<SignalType, 5, 3>(p1); // the signal type of the new signal
1044  bool convert_signal = HasBit(p1, 8); // convert button pressed
1045  SignalType cycle_start = Extract<SignalType, 9, 3>(p1);
1046  SignalType cycle_stop = Extract<SignalType, 12, 3>(p1);
1047  uint num_dir_cycle = GB(p1, 15, 2);
1048 
1049  if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
1050  if (cycle_start > cycle_stop || cycle_stop > SIGTYPE_LAST) return CMD_ERROR;
1051 
1052  /* You can only build signals on plain rail tiles, and the selected track must exist */
1053  if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) ||
1054  !HasTrack(tile, track)) {
1055  return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1056  }
1057  /* Protect against invalid signal copying */
1058  if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR;
1059 
1060  CommandCost ret = CheckTileOwnership(tile);
1061  if (ret.Failed()) return ret;
1062 
1063  /* See if this is a valid track combination for signals (no overlap) */
1064  if (TracksOverlap(GetTrackBits(tile))) return_cmd_error(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK);
1065 
1066  /* In case we don't want to change an existing signal, return without error. */
1067  if (HasBit(p1, 17) && HasSignalOnTrack(tile, track)) return CommandCost();
1068 
1069  /* you can not convert a signal if no signal is on track */
1070  if (convert_signal && !HasSignalOnTrack(tile, track)) return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS);
1071 
1072  CommandCost cost;
1073  if (!HasSignalOnTrack(tile, track)) {
1074  /* build new signals */
1075  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS]);
1076  } else {
1077  if (p2 != 0 && sigvar != GetSignalVariant(tile, track)) {
1078  /* convert signals <-> semaphores */
1079  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]);
1080 
1081  } else if (convert_signal) {
1082  /* convert button pressed */
1083  if (ctrl_pressed || GetSignalVariant(tile, track) != sigvar) {
1084  /* convert electric <-> semaphore */
1085  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]);
1086  } else {
1087  /* it is free to change signal type: normal-pre-exit-combo */
1088  cost = CommandCost();
1089  }
1090 
1091  } else {
1092  /* it is free to change orientation/pre-exit-combo signals */
1093  cost = CommandCost();
1094  }
1095  }
1096 
1097  if (flags & DC_EXEC) {
1098  Train *v = NULL;
1099  /* The new/changed signal could block our path. As this can lead to
1100  * stale reservations, we clear the path reservation here and try
1101  * to redo it later on. */
1102  if (HasReservedTracks(tile, TrackToTrackBits(track))) {
1103  v = GetTrainForReservation(tile, track);
1104  if (v != NULL) FreeTrainTrackReservation(v);
1105  }
1106 
1107  if (!HasSignals(tile)) {
1108  /* there are no signals at all on this tile yet */
1109  SetHasSignals(tile, true);
1110  SetSignalStates(tile, 0xF); // all signals are on
1111  SetPresentSignals(tile, 0); // no signals built by default
1112  SetSignalType(tile, track, sigtype);
1113  SetSignalVariant(tile, track, sigvar);
1114  }
1115 
1116  /* Subtract old signal infrastructure count. */
1117  Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile));
1118 
1119  if (p2 == 0) {
1120  if (!HasSignalOnTrack(tile, track)) {
1121  /* build new signals */
1122  SetPresentSignals(tile, GetPresentSignals(tile) | (IsPbsSignal(sigtype) ? KillFirstBit(SignalOnTrack(track)) : SignalOnTrack(track)));
1123  SetSignalType(tile, track, sigtype);
1124  SetSignalVariant(tile, track, sigvar);
1125  while (num_dir_cycle-- > 0) CycleSignalSide(tile, track);
1126  } else {
1127  if (convert_signal) {
1128  /* convert signal button pressed */
1129  if (ctrl_pressed) {
1130  /* toggle the present signal variant: SIG_ELECTRIC <-> SIG_SEMAPHORE */
1131  SetSignalVariant(tile, track, (GetSignalVariant(tile, track) == SIG_ELECTRIC) ? SIG_SEMAPHORE : SIG_ELECTRIC);
1132  /* Query current signal type so the check for PBS signals below works. */
1133  sigtype = GetSignalType(tile, track);
1134  } else {
1135  /* convert the present signal to the chosen type and variant */
1136  SetSignalType(tile, track, sigtype);
1137  SetSignalVariant(tile, track, sigvar);
1138  if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) {
1139  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track)));
1140  }
1141  }
1142 
1143  } else if (ctrl_pressed) {
1144  /* cycle between cycle_start and cycle_end */
1145  sigtype = (SignalType)(GetSignalType(tile, track) + 1);
1146 
1147  if (sigtype < cycle_start || sigtype > cycle_stop) sigtype = cycle_start;
1148 
1149  SetSignalType(tile, track, sigtype);
1150  if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) {
1151  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track)));
1152  }
1153  } else {
1154  /* cycle the signal side: both -> left -> right -> both -> ... */
1155  CycleSignalSide(tile, track);
1156  /* Query current signal type so the check for PBS signals below works. */
1157  sigtype = GetSignalType(tile, track);
1158  }
1159  }
1160  } else {
1161  /* If CmdBuildManySignals is called with copying signals, just copy the
1162  * direction of the first signal given as parameter by CmdBuildManySignals */
1163  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | (p2 & SignalOnTrack(track)));
1164  SetSignalVariant(tile, track, sigvar);
1165  SetSignalType(tile, track, sigtype);
1166  }
1167 
1168  /* Add new signal infrastructure count. */
1169  Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile));
1171 
1172  if (IsPbsSignal(sigtype)) {
1173  /* PBS signals should show red unless they are on reserved tiles without a train. */
1174  uint mask = GetPresentSignals(tile) & SignalOnTrack(track);
1175  SetSignalStates(tile, (GetSignalStates(tile) & ~mask) | ((HasBit(GetRailReservationTrackBits(tile), track) && EnsureNoVehicleOnGround(tile).Succeeded() ? UINT_MAX : 0) & mask));
1176  }
1177  MarkTileDirtyByTile(tile);
1179  YapfNotifyTrackLayoutChange(tile, track);
1180  if (v != NULL) {
1181  /* Extend the train's path if it's not stopped or loading, or not at a safe position. */
1182  if (!(((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) || v->current_order.IsType(OT_LOADING)) ||
1184  TryPathReserve(v, true);
1185  }
1186  }
1187  }
1188 
1189  return cost;
1190 }
1191 
1192 static bool CheckSignalAutoFill(TileIndex &tile, Trackdir &trackdir, int &signal_ctr, bool remove)
1193 {
1194  tile = AddTileIndexDiffCWrap(tile, _trackdelta[trackdir]);
1195  if (tile == INVALID_TILE) return false;
1196 
1197  /* Check for track bits on the new tile */
1199 
1200  if (TracksOverlap(TrackdirBitsToTrackBits(trackdirbits))) return false;
1201  trackdirbits &= TrackdirReachesTrackdirs(trackdir);
1202 
1203  /* No track bits, must stop */
1204  if (trackdirbits == TRACKDIR_BIT_NONE) return false;
1205 
1206  /* Get the first track dir */
1207  trackdir = RemoveFirstTrackdir(&trackdirbits);
1208 
1209  /* Any left? It's a junction so we stop */
1210  if (trackdirbits != TRACKDIR_BIT_NONE) return false;
1211 
1212  switch (GetTileType(tile)) {
1213  case MP_RAILWAY:
1214  if (IsRailDepot(tile)) return false;
1215  if (!remove && HasSignalOnTrack(tile, TrackdirToTrack(trackdir))) return false;
1216  signal_ctr++;
1217  if (IsDiagonalTrackdir(trackdir)) {
1218  signal_ctr++;
1219  /* Ensure signal_ctr even so X and Y pieces get signals */
1220  ClrBit(signal_ctr, 0);
1221  }
1222  return true;
1223 
1224  case MP_ROAD:
1225  if (!IsLevelCrossing(tile)) return false;
1226  signal_ctr += 2;
1227  return true;
1228 
1229  case MP_TUNNELBRIDGE: {
1230  TileIndex orig_tile = tile; // backup old value
1231 
1232  if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) return false;
1233  if (GetTunnelBridgeDirection(tile) != TrackdirToExitdir(trackdir)) return false;
1234 
1235  /* Skip to end of tunnel or bridge
1236  * note that tile is a parameter by reference, so it must be updated */
1237  tile = GetOtherTunnelBridgeEnd(tile);
1238 
1239  signal_ctr += (GetTunnelBridgeLength(orig_tile, tile) + 2) * 2;
1240  return true;
1241  }
1242 
1243  default: return false;
1244  }
1245 }
1246 
1264 static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1265 {
1266  CommandCost total_cost(EXPENSES_CONSTRUCTION);
1267  TileIndex start_tile = tile;
1268 
1269  Track track = Extract<Track, 0, 3>(p2);
1270  bool mode = HasBit(p2, 3);
1271  bool semaphores = HasBit(p2, 4);
1272  bool remove = HasBit(p2, 5);
1273  bool autofill = HasBit(p2, 6);
1274  bool minimise_gaps = HasBit(p2, 10);
1275  byte signal_density = GB(p2, 24, 8);
1276 
1277  if (p1 >= MapSize() || !ValParamTrackOrientation(track)) return CMD_ERROR;
1278  TileIndex end_tile = p1;
1279  if (signal_density == 0 || signal_density > 20) return CMD_ERROR;
1280 
1281  if (!IsPlainRailTile(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1282 
1283  /* for vertical/horizontal tracks, double the given signals density
1284  * since the original amount will be too dense (shorter tracks) */
1285  signal_density *= 2;
1286 
1287  Trackdir trackdir = TrackToTrackdir(track);
1288  CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile);
1289  if (ret.Failed()) return ret;
1290 
1291  track = TrackdirToTrack(trackdir); // trackdir might have changed, keep track in sync
1292  Trackdir start_trackdir = trackdir;
1293 
1294  /* Must start on a valid track to be able to avoid loops */
1295  if (!HasTrack(tile, track)) return CMD_ERROR;
1296 
1297  SignalType sigtype = (SignalType)GB(p2, 7, 3);
1298  if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
1299 
1300  byte signals;
1301  /* copy the signal-style of the first rail-piece if existing */
1302  if (HasSignalOnTrack(tile, track)) {
1303  signals = GetPresentSignals(tile) & SignalOnTrack(track);
1304  assert(signals != 0);
1305 
1306  /* copy signal/semaphores style (independent of CTRL) */
1307  semaphores = GetSignalVariant(tile, track) != SIG_ELECTRIC;
1308 
1309  sigtype = GetSignalType(tile, track);
1310  /* Don't but copy entry or exit-signal type */
1311  if (sigtype == SIGTYPE_ENTRY || sigtype == SIGTYPE_EXIT) sigtype = SIGTYPE_NORMAL;
1312  } else { // no signals exist, drag a two-way signal stretch
1313  signals = IsPbsSignal(sigtype) ? SignalAlongTrackdir(trackdir) : SignalOnTrack(track);
1314  }
1315 
1316  byte signal_dir = 0;
1317  if (signals & SignalAlongTrackdir(trackdir)) SetBit(signal_dir, 0);
1318  if (signals & SignalAgainstTrackdir(trackdir)) SetBit(signal_dir, 1);
1319 
1320  /* signal_ctr - amount of tiles already processed
1321  * last_used_ctr - amount of tiles before previously placed signal
1322  * signals_density - setting to put signal on every Nth tile (double space on |, -- tracks)
1323  * last_suitable_ctr - amount of tiles before last possible signal place
1324  * last_suitable_tile - last tile where it is possible to place a signal
1325  * last_suitable_trackdir - trackdir of the last tile
1326  **********
1327  * trackdir - trackdir to build with autorail
1328  * semaphores - semaphores or signals
1329  * signals - is there a signal/semaphore on the first tile, copy its style (two-way/single-way)
1330  * and convert all others to semaphore/signal
1331  * remove - 1 remove signals, 0 build signals */
1332  int signal_ctr = 0;
1333  int last_used_ctr = INT_MIN; // initially INT_MIN to force building/removing at the first tile
1334  int last_suitable_ctr = 0;
1335  TileIndex last_suitable_tile = INVALID_TILE;
1336  Trackdir last_suitable_trackdir = INVALID_TRACKDIR;
1337  CommandCost last_error = CMD_ERROR;
1338  bool had_success = false;
1339  for (;;) {
1340  /* only build/remove signals with the specified density */
1341  if (remove || minimise_gaps || signal_ctr % signal_density == 0) {
1342  uint32 p1 = GB(TrackdirToTrack(trackdir), 0, 3);
1343  SB(p1, 3, 1, mode);
1344  SB(p1, 4, 1, semaphores);
1345  SB(p1, 5, 3, sigtype);
1346  if (!remove && signal_ctr == 0) SetBit(p1, 17);
1347 
1348  /* Pick the correct orientation for the track direction */
1349  signals = 0;
1350  if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(trackdir);
1351  if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(trackdir);
1352 
1353  /* Test tiles in between for suitability as well if minimising gaps. */
1354  bool test_only = !remove && minimise_gaps && signal_ctr < (last_used_ctr + signal_density);
1355  CommandCost ret = DoCommand(tile, p1, signals, test_only ? flags & ~DC_EXEC : flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS);
1356 
1357  if (ret.Succeeded()) {
1358  /* Remember last track piece where we can place a signal. */
1359  last_suitable_ctr = signal_ctr;
1360  last_suitable_tile = tile;
1361  last_suitable_trackdir = trackdir;
1362  } else if (!test_only && last_suitable_tile != INVALID_TILE) {
1363  /* If a signal can't be placed, place it at the last possible position. */
1364  SB(p1, 0, 3, TrackdirToTrack(last_suitable_trackdir));
1365  ClrBit(p1, 17);
1366 
1367  /* Pick the correct orientation for the track direction. */
1368  signals = 0;
1369  if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(last_suitable_trackdir);
1370  if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(last_suitable_trackdir);
1371 
1372  ret = DoCommand(last_suitable_tile, p1, signals, flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS);
1373  }
1374 
1375  /* Collect cost. */
1376  if (!test_only) {
1377  /* Be user-friendly and try placing signals as much as possible */
1378  if (ret.Succeeded()) {
1379  had_success = true;
1380  total_cost.AddCost(ret);
1381  last_used_ctr = last_suitable_ctr;
1382  last_suitable_tile = INVALID_TILE;
1383  } else {
1384  /* The "No railway" error is the least important one. */
1385  if (ret.GetErrorMessage() != STR_ERROR_THERE_IS_NO_RAILROAD_TRACK ||
1386  last_error.GetErrorMessage() == INVALID_STRING_ID) {
1387  last_error = ret;
1388  }
1389  }
1390  }
1391  }
1392 
1393  if (autofill) {
1394  if (!CheckSignalAutoFill(tile, trackdir, signal_ctr, remove)) break;
1395 
1396  /* Prevent possible loops */
1397  if (tile == start_tile && trackdir == start_trackdir) break;
1398  } else {
1399  if (tile == end_tile) break;
1400 
1401  tile += ToTileIndexDiff(_trackdelta[trackdir]);
1402  signal_ctr++;
1403 
1404  /* toggle railbit for the non-diagonal tracks (|, -- tracks) */
1405  if (IsDiagonalTrackdir(trackdir)) {
1406  signal_ctr++;
1407  } else {
1408  ToggleBit(trackdir, 0);
1409  }
1410  }
1411  }
1412 
1413  return had_success ? total_cost : last_error;
1414 }
1415 
1434 CommandCost CmdBuildSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1435 {
1436  return CmdSignalTrackHelper(tile, flags, p1, p2, text);
1437 }
1438 
1451 CommandCost CmdRemoveSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1452 {
1453  Track track = Extract<Track, 0, 3>(p1);
1454 
1455  if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) || !HasTrack(tile, track)) {
1456  return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1457  }
1458  if (!HasSignalOnTrack(tile, track)) {
1459  return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS);
1460  }
1461 
1462  /* Only water can remove signals from anyone */
1463  if (_current_company != OWNER_WATER) {
1464  CommandCost ret = CheckTileOwnership(tile);
1465  if (ret.Failed()) return ret;
1466  }
1467 
1468  /* Do it? */
1469  if (flags & DC_EXEC) {
1470  Train *v = NULL;
1471  if (HasReservedTracks(tile, TrackToTrackBits(track))) {
1472  v = GetTrainForReservation(tile, track);
1473  } else if (IsPbsSignal(GetSignalType(tile, track))) {
1474  /* PBS signal, might be the end of a path reservation. */
1475  Trackdir td = TrackToTrackdir(track);
1476  for (int i = 0; v == NULL && i < 2; i++, td = ReverseTrackdir(td)) {
1477  /* Only test the active signal side. */
1478  if (!HasSignalOnTrackdir(tile, ReverseTrackdir(td))) continue;
1479  TileIndex next = TileAddByDiagDir(tile, TrackdirToExitdir(td));
1481  if (HasReservedTracks(next, tracks)) {
1483  }
1484  }
1485  }
1486  Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile));
1487  SetPresentSignals(tile, GetPresentSignals(tile) & ~SignalOnTrack(track));
1488  Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile));
1490 
1491  /* removed last signal from tile? */
1492  if (GetPresentSignals(tile) == 0) {
1493  SetSignalStates(tile, 0);
1494  SetHasSignals(tile, false);
1495  SetSignalVariant(tile, INVALID_TRACK, SIG_ELECTRIC); // remove any possible semaphores
1496  }
1497 
1498  AddTrackToSignalBuffer(tile, track, GetTileOwner(tile));
1499  YapfNotifyTrackLayoutChange(tile, track);
1500  if (v != NULL) TryPathReserve(v, false);
1501 
1502  MarkTileDirtyByTile(tile);
1503  }
1504 
1505  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_SIGNALS]);
1506 }
1507 
1526 CommandCost CmdRemoveSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1527 {
1528  return CmdSignalTrackHelper(tile, flags, p1, SetBit(p2, 5), text); // bit 5 is remove bit
1529 }
1530 
1532 static Vehicle *UpdateTrainPowerProc(Vehicle *v, void *data)
1533 {
1534  if (v->type != VEH_TRAIN) return NULL;
1535 
1536  TrainList *affected_trains = static_cast<TrainList*>(data);
1537  affected_trains->Include(Train::From(v)->First());
1538 
1539  return NULL;
1540 }
1541 
1554 CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1555 {
1556  RailType totype = Extract<RailType, 0, 6>(p2);
1557  TileIndex area_start = p1;
1558  TileIndex area_end = tile;
1559  bool diagonal = HasBit(p2, 6);
1560 
1561  if (!ValParamRailtype(totype)) return CMD_ERROR;
1562  if (area_start >= MapSize()) return CMD_ERROR;
1563 
1564  TrainList affected_trains;
1565 
1567  CommandCost error = CommandCost(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); // by default, there is no track to convert.
1568  bool found_convertible_track = false; // whether we actually did convert some track (see bug #7633)
1569 
1570  TileIterator *iter = diagonal ? (TileIterator *)new DiagonalTileIterator(area_start, area_end) : new OrthogonalTileIterator(area_start, area_end);
1571  for (; (tile = *iter) != INVALID_TILE; ++(*iter)) {
1572  TileType tt = GetTileType(tile);
1573 
1574  /* Check if there is any track on tile */
1575  switch (tt) {
1576  case MP_RAILWAY:
1577  break;
1578  case MP_STATION:
1579  if (!HasStationRail(tile)) continue;
1580  break;
1581  case MP_ROAD:
1582  if (!IsLevelCrossing(tile)) continue;
1583  if (RailNoLevelCrossings(totype)) {
1584  error.MakeError(STR_ERROR_CROSSING_DISALLOWED);
1585  continue;
1586  }
1587  break;
1588  case MP_TUNNELBRIDGE:
1589  if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) continue;
1590  break;
1591  default: continue;
1592  }
1593 
1594  /* Original railtype we are converting from */
1595  RailType type = GetRailType(tile);
1596 
1597  /* Converting to the same type or converting 'hidden' elrail -> rail */
1598  if (type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && type == RAILTYPE_ELECTRIC)) continue;
1599 
1600  /* Trying to convert other's rail */
1601  CommandCost ret = CheckTileOwnership(tile);
1602  if (ret.Failed()) {
1603  error = ret;
1604  continue;
1605  }
1606 
1607  SmallVector<Train *, 2> vehicles_affected;
1608 
1609  /* Vehicle on the tile when not converting Rail <-> ElRail
1610  * Tunnels and bridges have special check later */
1611  if (tt != MP_TUNNELBRIDGE) {
1612  if (!IsCompatibleRail(type, totype)) {
1614  if (ret.Failed()) {
1615  error = ret;
1616  continue;
1617  }
1618  }
1619  if (flags & DC_EXEC) { // we can safely convert, too
1620  TrackBits reserved = GetReservedTrackbits(tile);
1621  Track track;
1622  while ((track = RemoveFirstTrack(&reserved)) != INVALID_TRACK) {
1623  Train *v = GetTrainForReservation(tile, track);
1624  if (v != NULL && !HasPowerOnRail(v->railtype, totype)) {
1625  /* No power on new rail type, reroute. */
1627  *vehicles_affected.Append() = v;
1628  }
1629  }
1630 
1631  /* Update the company infrastructure counters. */
1632  if (!IsRailStationTile(tile) || !IsStationTileBlocked(tile)) {
1633  Company *c = Company::Get(GetTileOwner(tile));
1634  uint num_pieces = IsLevelCrossingTile(tile) ? LEVELCROSSING_TRACKBIT_FACTOR : 1;
1635  if (IsPlainRailTile(tile)) {
1636  TrackBits bits = GetTrackBits(tile);
1637  num_pieces = CountBits(bits);
1638  if (TracksOverlap(bits)) num_pieces *= num_pieces;
1639  }
1640  c->infrastructure.rail[type] -= num_pieces;
1641  c->infrastructure.rail[totype] += num_pieces;
1643  }
1644 
1645  SetRailType(tile, totype);
1646  MarkTileDirtyByTile(tile);
1647  /* update power of train on this tile */
1648  FindVehicleOnPos(tile, &affected_trains, &UpdateTrainPowerProc);
1649  }
1650  }
1651 
1652  switch (tt) {
1653  case MP_RAILWAY:
1654  switch (GetRailTileType(tile)) {
1655  case RAIL_TILE_DEPOT:
1656  if (flags & DC_EXEC) {
1657  /* notify YAPF about the track layout change */
1659 
1660  /* Update build vehicle window related to this depot */
1663  }
1664  found_convertible_track = true;
1665  cost.AddCost(RailConvertCost(type, totype));
1666  break;
1667 
1668  default: // RAIL_TILE_NORMAL, RAIL_TILE_SIGNALS
1669  if (flags & DC_EXEC) {
1670  /* notify YAPF about the track layout change */
1671  TrackBits tracks = GetTrackBits(tile);
1672  while (tracks != TRACK_BIT_NONE) {
1674  }
1675  }
1676  found_convertible_track = true;
1677  cost.AddCost(RailConvertCost(type, totype) * CountBits(GetTrackBits(tile)));
1678  break;
1679  }
1680  break;
1681 
1682  case MP_TUNNELBRIDGE: {
1683  TileIndex endtile = GetOtherTunnelBridgeEnd(tile);
1684 
1685  /* If both ends of tunnel/bridge are in the range, do not try to convert twice -
1686  * it would cause assert because of different test and exec runs */
1687  if (endtile < tile) {
1688  if (diagonal) {
1689  if (DiagonalTileArea(area_start, area_end).Contains(endtile)) continue;
1690  } else {
1691  if (OrthogonalTileArea(area_start, area_end).Contains(endtile)) continue;
1692  }
1693  }
1694 
1695  /* When not converting rail <-> el. rail, any vehicle cannot be in tunnel/bridge */
1696  if (!IsCompatibleRail(GetRailType(tile), totype)) {
1697  CommandCost ret = TunnelBridgeIsFree(tile, endtile);
1698  if (ret.Failed()) {
1699  error = ret;
1700  continue;
1701  }
1702  }
1703 
1704  if (flags & DC_EXEC) {
1706  if (HasTunnelBridgeReservation(tile)) {
1707  Train *v = GetTrainForReservation(tile, track);
1708  if (v != NULL && !HasPowerOnRail(v->railtype, totype)) {
1709  /* No power on new rail type, reroute. */
1711  *vehicles_affected.Append() = v;
1712  }
1713  }
1714 
1715  /* Update the company infrastructure counters. */
1716  uint num_pieces = (GetTunnelBridgeLength(tile, endtile) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
1717  Company *c = Company::Get(GetTileOwner(tile));
1718  c->infrastructure.rail[GetRailType(tile)] -= num_pieces;
1719  c->infrastructure.rail[totype] += num_pieces;
1721 
1722  SetRailType(tile, totype);
1723  SetRailType(endtile, totype);
1724 
1725  FindVehicleOnPos(tile, &affected_trains, &UpdateTrainPowerProc);
1726  FindVehicleOnPos(endtile, &affected_trains, &UpdateTrainPowerProc);
1727 
1728  YapfNotifyTrackLayoutChange(tile, track);
1729  YapfNotifyTrackLayoutChange(endtile, track);
1730 
1731  if (IsBridge(tile)) {
1732  MarkBridgeDirty(tile);
1733  } else {
1734  MarkTileDirtyByTile(tile);
1735  MarkTileDirtyByTile(endtile);
1736  }
1737  }
1738 
1739  found_convertible_track = true;
1740  cost.AddCost((GetTunnelBridgeLength(tile, endtile) + 2) * RailConvertCost(type, totype));
1741  break;
1742  }
1743 
1744  default: // MP_STATION, MP_ROAD
1745  if (flags & DC_EXEC) {
1746  Track track = ((tt == MP_STATION) ? GetRailStationTrack(tile) : GetCrossingRailTrack(tile));
1747  YapfNotifyTrackLayoutChange(tile, track);
1748  }
1749 
1750  found_convertible_track = true;
1751  cost.AddCost(RailConvertCost(type, totype));
1752  break;
1753  }
1754 
1755  for (uint i = 0; i < vehicles_affected.Length(); ++i) {
1756  TryPathReserve(vehicles_affected[i], true);
1757  }
1758  }
1759 
1760  if (flags & DC_EXEC) {
1761  /* Railtype changed, update trains as when entering different track */
1762  for (Train **v = affected_trains.Begin(); v != affected_trains.End(); v++) {
1763  (*v)->ConsistChanged(CCF_TRACK);
1764  }
1765  }
1766 
1767  delete iter;
1768  return found_convertible_track ? cost : error;
1769 }
1770 
1771 static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags)
1772 {
1773  if (_current_company != OWNER_WATER) {
1774  CommandCost ret = CheckTileOwnership(tile);
1775  if (ret.Failed()) return ret;
1776  }
1777 
1779  if (ret.Failed()) return ret;
1780 
1781  if (flags & DC_EXEC) {
1782  /* read variables before the depot is removed */
1784  Owner owner = GetTileOwner(tile);
1785  Train *v = NULL;
1786 
1787  if (HasDepotReservation(tile)) {
1789  if (v != NULL) FreeTrainTrackReservation(v);
1790  }
1791 
1792  Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
1794 
1795  delete Depot::GetByTile(tile);
1796  DoClearSquare(tile);
1797  AddSideToSignalBuffer(tile, dir, owner);
1799  if (v != NULL) TryPathReserve(v, true);
1800  }
1801 
1802  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_DEPOT_TRAIN]);
1803 }
1804 
1805 static CommandCost ClearTile_Track(TileIndex tile, DoCommandFlag flags)
1806 {
1808 
1809  if (flags & DC_AUTO) {
1810  if (!IsTileOwner(tile, _current_company)) {
1811  return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
1812  }
1813 
1814  if (IsPlainRail(tile)) {
1815  return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
1816  } else {
1817  return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
1818  }
1819  }
1820 
1821  switch (GetRailTileType(tile)) {
1822  case RAIL_TILE_SIGNALS:
1823  case RAIL_TILE_NORMAL: {
1824  Slope tileh = GetTileSlope(tile);
1825  /* Is there flat water on the lower halftile that gets cleared expensively? */
1826  bool water_ground = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh));
1827 
1828  TrackBits tracks = GetTrackBits(tile);
1829  while (tracks != TRACK_BIT_NONE) {
1830  Track track = RemoveFirstTrack(&tracks);
1831  CommandCost ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
1832  if (ret.Failed()) return ret;
1833  cost.AddCost(ret);
1834  }
1835 
1836  /* When bankrupting, don't make water dirty, there could be a ship on lower halftile.
1837  * Same holds for non-companies clearing the tile, e.g. disasters. */
1838  if (water_ground && !(flags & DC_BANKRUPT) && Company::IsValidID(_current_company)) {
1840  if (ret.Failed()) return ret;
1841 
1842  /* The track was removed, and left a coast tile. Now also clear the water. */
1843  if (flags & DC_EXEC) DoClearSquare(tile);
1844  cost.AddCost(_price[PR_CLEAR_WATER]);
1845  }
1846 
1847  return cost;
1848  }
1849 
1850  case RAIL_TILE_DEPOT:
1851  return RemoveTrainDepot(tile, flags);
1852 
1853  default:
1854  return CMD_ERROR;
1855  }
1856 }
1857 
1862 static uint GetSaveSlopeZ(uint x, uint y, Track track)
1863 {
1864  switch (track) {
1865  case TRACK_UPPER: x &= ~0xF; y &= ~0xF; break;
1866  case TRACK_LOWER: x |= 0xF; y |= 0xF; break;
1867  case TRACK_LEFT: x |= 0xF; y &= ~0xF; break;
1868  case TRACK_RIGHT: x &= ~0xF; y |= 0xF; break;
1869  default: break;
1870  }
1871  return GetSlopePixelZ(x, y);
1872 }
1873 
1874 static void DrawSingleSignal(TileIndex tile, const RailtypeInfo *rti, Track track, SignalState condition, SignalOffsets image, uint pos)
1875 {
1876  bool side;
1878  case 0: side = false; break; // left
1879  case 2: side = true; break; // right
1880  default: side = _settings_game.vehicle.road_side != 0; break; // driving side
1881  }
1882  static const Point SignalPositions[2][12] = {
1883  { // Signals on the left side
1884  /* LEFT LEFT RIGHT RIGHT UPPER UPPER */
1885  { 8, 5}, {14, 1}, { 1, 14}, { 9, 11}, { 1, 0}, { 3, 10},
1886  /* LOWER LOWER X X Y Y */
1887  {11, 4}, {14, 14}, {11, 3}, { 4, 13}, { 3, 4}, {11, 13}
1888  }, { // Signals on the right side
1889  /* LEFT LEFT RIGHT RIGHT UPPER UPPER */
1890  {14, 1}, {12, 10}, { 4, 6}, { 1, 14}, {10, 4}, { 0, 1},
1891  /* LOWER LOWER X X Y Y */
1892  {14, 14}, { 5, 12}, {11, 13}, { 4, 3}, {13, 4}, { 3, 11}
1893  }
1894  };
1895 
1896  uint x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x;
1897  uint y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y;
1898 
1899  SignalType type = GetSignalType(tile, track);
1900  SignalVariant variant = GetSignalVariant(tile, track);
1901 
1902  SpriteID sprite = GetCustomSignalSprite(rti, tile, type, variant, condition);
1903  if (sprite != 0) {
1904  sprite += image;
1905  } else {
1906  /* Normal electric signals are stored in a different sprite block than all other signals. */
1907  sprite = (type == SIGTYPE_NORMAL && variant == SIG_ELECTRIC) ? SPR_ORIGINAL_SIGNALS_BASE : SPR_SIGNALS_BASE - 16;
1908  sprite += type * 16 + variant * 64 + image * 2 + condition + (type > SIGTYPE_LAST_NOPBS ? 64 : 0);
1909  }
1910 
1911  AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, GetSaveSlopeZ(x, y, track));
1912 }
1913 
1914 static uint32 _drawtile_track_palette;
1915 
1916 
1917 
1919 struct FenceOffset {
1921  int x_offs;
1922  int y_offs;
1923  int x_size;
1924  int y_size;
1925 };
1926 
1929  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_FLAT_X_NW
1930  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_FLAT_Y_NE
1931  { CORNER_W, 8, 8, 1, 1 }, // RFO_FLAT_LEFT
1932  { CORNER_N, 8, 8, 1, 1 }, // RFO_FLAT_UPPER
1933  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_SW_NW
1934  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_SE_NE
1935  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_NE_NW
1936  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_NW_NE
1937  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_FLAT_X_SE
1938  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_FLAT_Y_SW
1939  { CORNER_E, 8, 8, 1, 1 }, // RFO_FLAT_RIGHT
1940  { CORNER_S, 8, 8, 1, 1 }, // RFO_FLAT_LOWER
1941  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_SW_SE
1942  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_SE_SW
1943  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_NE_SE
1944  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_NW_SW
1945 };
1946 
1954 static void DrawTrackFence(const TileInfo *ti, SpriteID base_image, uint num_sprites, RailFenceOffset rfo)
1955 {
1956  int z = ti->z;
1957  if (_fence_offsets[rfo].height_ref != CORNER_INVALID) {
1958  z += GetSlopePixelZInCorner(RemoveHalftileSlope(ti->tileh), _fence_offsets[rfo].height_ref);
1959  }
1960  AddSortableSpriteToDraw(base_image + (rfo % num_sprites), _drawtile_track_palette,
1961  ti->x + _fence_offsets[rfo].x_offs,
1962  ti->y + _fence_offsets[rfo].y_offs,
1963  _fence_offsets[rfo].x_size,
1964  _fence_offsets[rfo].y_size,
1965  4, z);
1966 }
1967 
1971 static void DrawTrackFence_NW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1972 {
1974  if (ti->tileh & SLOPE_NW) rfo = (ti->tileh & SLOPE_W) ? RFO_SLOPE_SW_NW : RFO_SLOPE_NE_NW;
1975  DrawTrackFence(ti, base_image, num_sprites, rfo);
1976 }
1977 
1981 static void DrawTrackFence_SE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1982 {
1984  if (ti->tileh & SLOPE_SE) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SW_SE : RFO_SLOPE_NE_SE;
1985  DrawTrackFence(ti, base_image, num_sprites, rfo);
1986 }
1987 
1991 static void DrawTrackFence_NE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1992 {
1994  if (ti->tileh & SLOPE_NE) rfo = (ti->tileh & SLOPE_E) ? RFO_SLOPE_SE_NE : RFO_SLOPE_NW_NE;
1995  DrawTrackFence(ti, base_image, num_sprites, rfo);
1996 }
1997 
2001 static void DrawTrackFence_SW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
2002 {
2004  if (ti->tileh & SLOPE_SW) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SE_SW : RFO_SLOPE_NW_SW;
2005  DrawTrackFence(ti, base_image, num_sprites, rfo);
2006 }
2007 
2013 static void DrawTrackDetails(const TileInfo *ti, const RailtypeInfo *rti)
2014 {
2015  /* Base sprite for track fences.
2016  * Note: Halftile slopes only have fences on the upper part. */
2017  uint num_sprites = 0;
2018  SpriteID base_image = GetCustomRailSprite(rti, ti->tile, RTSG_FENCES, IsHalftileSlope(ti->tileh) ? TCX_UPPER_HALFTILE : TCX_NORMAL, &num_sprites);
2019  if (base_image == 0) {
2020  base_image = SPR_TRACK_FENCE_FLAT_X;
2021  num_sprites = 8;
2022  }
2023 
2024  assert(num_sprites > 0);
2025 
2026  switch (GetRailGroundType(ti->tile)) {
2027  case RAIL_GROUND_FENCE_NW: DrawTrackFence_NW(ti, base_image, num_sprites); break;
2028  case RAIL_GROUND_FENCE_SE: DrawTrackFence_SE(ti, base_image, num_sprites); break;
2029  case RAIL_GROUND_FENCE_SENW: DrawTrackFence_NW(ti, base_image, num_sprites);
2030  DrawTrackFence_SE(ti, base_image, num_sprites); break;
2031  case RAIL_GROUND_FENCE_NE: DrawTrackFence_NE(ti, base_image, num_sprites); break;
2032  case RAIL_GROUND_FENCE_SW: DrawTrackFence_SW(ti, base_image, num_sprites); break;
2033  case RAIL_GROUND_FENCE_NESW: DrawTrackFence_NE(ti, base_image, num_sprites);
2034  DrawTrackFence_SW(ti, base_image, num_sprites); break;
2035  case RAIL_GROUND_FENCE_VERT1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break;
2036  case RAIL_GROUND_FENCE_VERT2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break;
2037  case RAIL_GROUND_FENCE_HORIZ1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break;
2038  case RAIL_GROUND_FENCE_HORIZ2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break;
2039  case RAIL_GROUND_WATER: {
2040  Corner track_corner;
2041  if (IsHalftileSlope(ti->tileh)) {
2042  /* Steep slope or one-corner-raised slope with halftile foundation */
2043  track_corner = GetHalftileSlopeCorner(ti->tileh);
2044  } else {
2045  /* Three-corner-raised slope */
2047  }
2048  switch (track_corner) {
2049  case CORNER_W: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break;
2050  case CORNER_S: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break;
2051  case CORNER_E: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break;
2052  case CORNER_N: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break;
2053  default: NOT_REACHED();
2054  }
2055  break;
2056  }
2057  default: break;
2058  }
2059 }
2060 
2061 /* SubSprite for drawing the track halftile of 'three-corners-raised'-sloped rail sprites. */
2062 static const int INF = 1000; // big number compared to tilesprite size
2063 static const SubSprite _halftile_sub_sprite[4] = {
2064  { -INF , -INF , 32 - 33, INF }, // CORNER_W, clip 33 pixels from right
2065  { -INF , 0 + 7, INF , INF }, // CORNER_S, clip 7 pixels from top
2066  { -31 + 33, -INF , INF , INF }, // CORNER_E, clip 33 pixels from left
2067  { -INF , -INF , INF , 30 - 23 } // CORNER_N, clip 23 pixels from bottom
2068 };
2069 
2070 static inline void DrawTrackSprite(SpriteID sprite, PaletteID pal, const TileInfo *ti, Slope s)
2071 {
2072  DrawGroundSprite(sprite, pal, NULL, 0, (ti->tileh & s) ? -8 : 0);
2073 }
2074 
2075 static void DrawTrackBitsOverlay(TileInfo *ti, TrackBits track, const RailtypeInfo *rti)
2076 {
2077  RailGroundType rgt = GetRailGroundType(ti->tile);
2078  Foundation f = GetRailFoundation(ti->tileh, track);
2079  Corner halftile_corner = CORNER_INVALID;
2080 
2081  if (IsNonContinuousFoundation(f)) {
2082  /* Save halftile corner */
2084  /* Draw lower part first */
2085  track &= ~CornerToTrackBits(halftile_corner);
2087  }
2088 
2089  DrawFoundation(ti, f);
2090  /* DrawFoundation modifies ti */
2091 
2092  /* Draw ground */
2093  if (rgt == RAIL_GROUND_WATER) {
2094  if (track != TRACK_BIT_NONE || IsSteepSlope(ti->tileh)) {
2095  /* three-corner-raised slope or steep slope with track on upper part */
2096  DrawShoreTile(ti->tileh);
2097  } else {
2098  /* single-corner-raised slope with track on upper part */
2099  DrawGroundSprite(SPR_FLAT_WATER_TILE, PAL_NONE);
2100  }
2101  } else {
2102  SpriteID image;
2103 
2104  switch (rgt) {
2105  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2106  case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2107  default: image = SPR_FLAT_GRASS_TILE; break;
2108  }
2109 
2110  image += SlopeToSpriteOffset(ti->tileh);
2111 
2112  DrawGroundSprite(image, PAL_NONE);
2113  }
2114 
2115  SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2116  SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2118 
2119  if (track == TRACK_BIT_NONE) {
2120  /* Half-tile foundation, no track here? */
2121  } else if (ti->tileh == SLOPE_NW && track == TRACK_BIT_Y) {
2122  DrawGroundSprite(ground + RTO_SLOPE_NW, PAL_NONE);
2124  } else if (ti->tileh == SLOPE_NE && track == TRACK_BIT_X) {
2125  DrawGroundSprite(ground + RTO_SLOPE_NE, PAL_NONE);
2127  } else if (ti->tileh == SLOPE_SE && track == TRACK_BIT_Y) {
2128  DrawGroundSprite(ground + RTO_SLOPE_SE, PAL_NONE);
2130  } else if (ti->tileh == SLOPE_SW && track == TRACK_BIT_X) {
2131  DrawGroundSprite(ground + RTO_SLOPE_SW, PAL_NONE);
2133  } else {
2134  switch (track) {
2135  /* Draw single ground sprite when not overlapping. No track overlay
2136  * is necessary for these sprites. */
2137  case TRACK_BIT_X: DrawGroundSprite(ground + RTO_X, PAL_NONE); break;
2138  case TRACK_BIT_Y: DrawGroundSprite(ground + RTO_Y, PAL_NONE); break;
2139  case TRACK_BIT_UPPER: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N); break;
2140  case TRACK_BIT_LOWER: DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break;
2141  case TRACK_BIT_RIGHT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E); break;
2142  case TRACK_BIT_LEFT: DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break;
2143  case TRACK_BIT_CROSS: DrawGroundSprite(ground + RTO_CROSSING_XY, PAL_NONE); break;
2144  case TRACK_BIT_HORZ: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N);
2145  DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break;
2146  case TRACK_BIT_VERT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E);
2147  DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break;
2148 
2149  default:
2150  /* We're drawing a junction tile */
2151  if ((track & TRACK_BIT_3WAY_NE) == 0) {
2152  DrawGroundSprite(ground + RTO_JUNCTION_SW, PAL_NONE);
2153  } else if ((track & TRACK_BIT_3WAY_SW) == 0) {
2154  DrawGroundSprite(ground + RTO_JUNCTION_NE, PAL_NONE);
2155  } else if ((track & TRACK_BIT_3WAY_NW) == 0) {
2156  DrawGroundSprite(ground + RTO_JUNCTION_SE, PAL_NONE);
2157  } else if ((track & TRACK_BIT_3WAY_SE) == 0) {
2158  DrawGroundSprite(ground + RTO_JUNCTION_NW, PAL_NONE);
2159  } else {
2160  DrawGroundSprite(ground + RTO_JUNCTION_NSEW, PAL_NONE);
2161  }
2162 
2163  /* Mask out PBS bits as we shall draw them afterwards anyway. */
2164  track &= ~pbs;
2165 
2166  /* Draw regular track bits */
2167  if (track & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PAL_NONE);
2168  if (track & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PAL_NONE);
2169  if (track & TRACK_BIT_UPPER) DrawGroundSprite(overlay + RTO_N, PAL_NONE);
2170  if (track & TRACK_BIT_LOWER) DrawGroundSprite(overlay + RTO_S, PAL_NONE);
2171  if (track & TRACK_BIT_RIGHT) DrawGroundSprite(overlay + RTO_E, PAL_NONE);
2172  if (track & TRACK_BIT_LEFT) DrawGroundSprite(overlay + RTO_W, PAL_NONE);
2173  }
2174 
2175  /* Draw reserved track bits */
2176  if (pbs & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH);
2177  if (pbs & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH);
2178  if (pbs & TRACK_BIT_UPPER) DrawTrackSprite(overlay + RTO_N, PALETTE_CRASH, ti, SLOPE_N);
2179  if (pbs & TRACK_BIT_LOWER) DrawTrackSprite(overlay + RTO_S, PALETTE_CRASH, ti, SLOPE_S);
2180  if (pbs & TRACK_BIT_RIGHT) DrawTrackSprite(overlay + RTO_E, PALETTE_CRASH, ti, SLOPE_E);
2181  if (pbs & TRACK_BIT_LEFT) DrawTrackSprite(overlay + RTO_W, PALETTE_CRASH, ti, SLOPE_W);
2182  }
2183 
2184  if (IsValidCorner(halftile_corner)) {
2185  DrawFoundation(ti, HalftileFoundation(halftile_corner));
2188 
2189  /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */
2190  Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
2191 
2192  SpriteID image;
2193  switch (rgt) {
2194  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2196  case RAIL_GROUND_HALF_SNOW: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2197  default: image = SPR_FLAT_GRASS_TILE; break;
2198  }
2199 
2200  image += SlopeToSpriteOffset(fake_slope);
2201 
2202  DrawGroundSprite(image, PAL_NONE, &(_halftile_sub_sprite[halftile_corner]));
2203 
2204  track = CornerToTrackBits(halftile_corner);
2205 
2206  int offset;
2207  switch (track) {
2208  default: NOT_REACHED();
2209  case TRACK_BIT_UPPER: offset = RTO_N; break;
2210  case TRACK_BIT_LOWER: offset = RTO_S; break;
2211  case TRACK_BIT_RIGHT: offset = RTO_E; break;
2212  case TRACK_BIT_LEFT: offset = RTO_W; break;
2213  }
2214 
2215  DrawTrackSprite(ground + offset, PAL_NONE, ti, fake_slope);
2217  DrawTrackSprite(overlay + offset, PALETTE_CRASH, ti, fake_slope);
2218  }
2219  }
2220 }
2221 
2227 static void DrawTrackBits(TileInfo *ti, TrackBits track)
2228 {
2229  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2230 
2231  if (rti->UsesOverlay()) {
2232  DrawTrackBitsOverlay(ti, track, rti);
2233  return;
2234  }
2235 
2236  RailGroundType rgt = GetRailGroundType(ti->tile);
2237  Foundation f = GetRailFoundation(ti->tileh, track);
2238  Corner halftile_corner = CORNER_INVALID;
2239 
2240  if (IsNonContinuousFoundation(f)) {
2241  /* Save halftile corner */
2243  /* Draw lower part first */
2244  track &= ~CornerToTrackBits(halftile_corner);
2246  }
2247 
2248  DrawFoundation(ti, f);
2249  /* DrawFoundation modifies ti */
2250 
2251  SpriteID image;
2252  PaletteID pal = PAL_NONE;
2253  const SubSprite *sub = NULL;
2254  bool junction = false;
2255 
2256  /* Select the sprite to use. */
2257  if (track == 0) {
2258  /* Clear ground (only track on halftile foundation) */
2259  if (rgt == RAIL_GROUND_WATER) {
2260  if (IsSteepSlope(ti->tileh)) {
2261  DrawShoreTile(ti->tileh);
2262  image = 0;
2263  } else {
2264  image = SPR_FLAT_WATER_TILE;
2265  }
2266  } else {
2267  switch (rgt) {
2268  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2269  case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2270  default: image = SPR_FLAT_GRASS_TILE; break;
2271  }
2272  image += SlopeToSpriteOffset(ti->tileh);
2273  }
2274  } else {
2275  if (ti->tileh != SLOPE_FLAT) {
2276  /* track on non-flat ground */
2277  image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y;
2278  } else {
2279  /* track on flat ground */
2280  (image = rti->base_sprites.track_y, track == TRACK_BIT_Y) ||
2281  (image++, track == TRACK_BIT_X) ||
2282  (image++, track == TRACK_BIT_UPPER) ||
2283  (image++, track == TRACK_BIT_LOWER) ||
2284  (image++, track == TRACK_BIT_RIGHT) ||
2285  (image++, track == TRACK_BIT_LEFT) ||
2286  (image++, track == TRACK_BIT_CROSS) ||
2287 
2288  (image = rti->base_sprites.track_ns, track == TRACK_BIT_HORZ) ||
2289  (image++, track == TRACK_BIT_VERT) ||
2290 
2291  (junction = true, false) ||
2292  (image = rti->base_sprites.ground, (track & TRACK_BIT_3WAY_NE) == 0) ||
2293  (image++, (track & TRACK_BIT_3WAY_SW) == 0) ||
2294  (image++, (track & TRACK_BIT_3WAY_NW) == 0) ||
2295  (image++, (track & TRACK_BIT_3WAY_SE) == 0) ||
2296  (image++, true);
2297  }
2298 
2299  switch (rgt) {
2300  case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break;
2301  case RAIL_GROUND_ICE_DESERT: image += rti->snow_offset; break;
2302  case RAIL_GROUND_WATER: {
2303  /* three-corner-raised slope */
2304  DrawShoreTile(ti->tileh);
2306  sub = &(_halftile_sub_sprite[track_corner]);
2307  break;
2308  }
2309  default: break;
2310  }
2311  }
2312 
2313  if (image != 0) DrawGroundSprite(image, pal, sub);
2314 
2315  /* Draw track pieces individually for junction tiles */
2316  if (junction) {
2317  if (track & TRACK_BIT_X) DrawGroundSprite(rti->base_sprites.single_x, PAL_NONE);
2318  if (track & TRACK_BIT_Y) DrawGroundSprite(rti->base_sprites.single_y, PAL_NONE);
2319  if (track & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PAL_NONE);
2320  if (track & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PAL_NONE);
2321  if (track & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PAL_NONE);
2322  if (track & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PAL_NONE);
2323  }
2324 
2325  /* PBS debugging, draw reserved tracks darker */
2326  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation) {
2327  /* Get reservation, but mask track on halftile slope */
2328  TrackBits pbs = GetRailReservationTrackBits(ti->tile) & track;
2329  if (pbs & TRACK_BIT_X) {
2330  if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) {
2332  } else {
2333  DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH);
2334  }
2335  }
2336  if (pbs & TRACK_BIT_Y) {
2337  if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) {
2339  } else {
2340  DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH);
2341  }
2342  }
2343  if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_N ? -(int)TILE_HEIGHT : 0);
2344  if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_S ? -(int)TILE_HEIGHT : 0);
2345  if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_W ? -(int)TILE_HEIGHT : 0);
2346  if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_E ? -(int)TILE_HEIGHT : 0);
2347  }
2348 
2349  if (IsValidCorner(halftile_corner)) {
2350  DrawFoundation(ti, HalftileFoundation(halftile_corner));
2351 
2352  /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */
2353  Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
2354  image = _track_sloped_sprites[fake_slope - 1] + rti->base_sprites.track_y;
2355  pal = PAL_NONE;
2356  switch (rgt) {
2357  case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break;
2359  case RAIL_GROUND_HALF_SNOW: image += rti->snow_offset; break; // higher part has snow in this case too
2360  default: break;
2361  }
2362  DrawGroundSprite(image, pal, &(_halftile_sub_sprite[halftile_corner]));
2363 
2364  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasReservedTracks(ti->tile, CornerToTrackBits(halftile_corner))) {
2365  static const byte _corner_to_track_sprite[] = {3, 1, 2, 0};
2366  DrawGroundSprite(_corner_to_track_sprite[halftile_corner] + rti->base_sprites.single_n, PALETTE_CRASH, NULL, 0, -(int)TILE_HEIGHT);
2367  }
2368  }
2369 }
2370 
2371 static void DrawSignals(TileIndex tile, TrackBits rails, const RailtypeInfo *rti)
2372 {
2373 #define MAYBE_DRAW_SIGNAL(x, y, z, t) if (IsSignalPresent(tile, x)) DrawSingleSignal(tile, rti, t, GetSingleSignalState(tile, x), y, z)
2374 
2375  if (!(rails & TRACK_BIT_Y)) {
2376  if (!(rails & TRACK_BIT_X)) {
2377  if (rails & TRACK_BIT_LEFT) {
2378  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTH, 0, TRACK_LEFT);
2379  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTH, 1, TRACK_LEFT);
2380  }
2381  if (rails & TRACK_BIT_RIGHT) {
2382  MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_NORTH, 2, TRACK_RIGHT);
2383  MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_SOUTH, 3, TRACK_RIGHT);
2384  }
2385  if (rails & TRACK_BIT_UPPER) {
2386  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_WEST, 4, TRACK_UPPER);
2387  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_EAST, 5, TRACK_UPPER);
2388  }
2389  if (rails & TRACK_BIT_LOWER) {
2390  MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_WEST, 6, TRACK_LOWER);
2391  MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_EAST, 7, TRACK_LOWER);
2392  }
2393  } else {
2394  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHWEST, 8, TRACK_X);
2395  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHEAST, 9, TRACK_X);
2396  }
2397  } else {
2398  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHEAST, 10, TRACK_Y);
2399  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHWEST, 11, TRACK_Y);
2400  }
2401 }
2402 
2403 static void DrawTile_Track(TileInfo *ti)
2404 {
2405  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2406 
2407  _drawtile_track_palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
2408 
2409  if (IsPlainRail(ti->tile)) {
2410  TrackBits rails = GetTrackBits(ti->tile);
2411 
2412  DrawTrackBits(ti, rails);
2413 
2415 
2417 
2418  if (HasSignals(ti->tile)) DrawSignals(ti->tile, rails, rti);
2419  } else {
2420  /* draw depot */
2421  const DrawTileSprites *dts;
2422  PaletteID pal = PAL_NONE;
2423  SpriteID relocation;
2424 
2426 
2428  /* Draw rail instead of depot */
2429  dts = &_depot_invisible_gfx_table[GetRailDepotDirection(ti->tile)];
2430  } else {
2431  dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)];
2432  }
2433 
2434  SpriteID image;
2435  if (rti->UsesOverlay()) {
2436  image = SPR_FLAT_GRASS_TILE;
2437  } else {
2438  image = dts->ground.sprite;
2439  if (image != SPR_FLAT_GRASS_TILE) image += rti->GetRailtypeSpriteOffset();
2440  }
2441 
2442  /* adjust ground tile for desert
2443  * don't adjust for snow, because snow in depots looks weird */
2444  if (IsSnowRailGround(ti->tile) && _settings_game.game_creation.landscape == LT_TROPIC) {
2445  if (image != SPR_FLAT_GRASS_TILE) {
2446  image += rti->snow_offset; // tile with tracks
2447  } else {
2448  image = SPR_FLAT_SNOW_DESERT_TILE; // flat ground
2449  }
2450  }
2451 
2452  DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, _drawtile_track_palette));
2453 
2454  if (rti->UsesOverlay()) {
2455  SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2456 
2457  switch (GetRailDepotDirection(ti->tile)) {
2458  case DIAGDIR_NE:
2459  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2460  FALLTHROUGH;
2461  case DIAGDIR_SW:
2462  DrawGroundSprite(ground + RTO_X, PAL_NONE);
2463  break;
2464  case DIAGDIR_NW:
2465  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2466  FALLTHROUGH;
2467  case DIAGDIR_SE:
2468  DrawGroundSprite(ground + RTO_Y, PAL_NONE);
2469  break;
2470  default:
2471  break;
2472  }
2473 
2475  SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2476 
2477  switch (GetRailDepotDirection(ti->tile)) {
2478  case DIAGDIR_NE:
2479  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2480  FALLTHROUGH;
2481  case DIAGDIR_SW:
2482  DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH);
2483  break;
2484  case DIAGDIR_NW:
2485  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2486  FALLTHROUGH;
2487  case DIAGDIR_SE:
2488  DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH);
2489  break;
2490  default:
2491  break;
2492  }
2493  }
2494  } else {
2495  /* PBS debugging, draw reserved tracks darker */
2496  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasDepotReservation(ti->tile)) {
2497  switch (GetRailDepotDirection(ti->tile)) {
2498  case DIAGDIR_NE:
2499  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2500  FALLTHROUGH;
2501  case DIAGDIR_SW:
2503  break;
2504  case DIAGDIR_NW:
2505  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2506  FALLTHROUGH;
2507  case DIAGDIR_SE:
2509  break;
2510  default:
2511  break;
2512  }
2513  }
2514  }
2515  int depot_sprite = GetCustomRailSprite(rti, ti->tile, RTSG_DEPOT);
2516  relocation = depot_sprite != 0 ? depot_sprite - SPR_RAIL_DEPOT_SE_1 : rti->GetRailtypeSpriteOffset();
2517 
2519 
2520  DrawRailTileSeq(ti, dts, TO_BUILDINGS, relocation, 0, _drawtile_track_palette);
2521  }
2522  DrawBridgeMiddle(ti);
2523 }
2524 
2525 void DrawTrainDepotSprite(int x, int y, int dir, RailType railtype)
2526 {
2527  const DrawTileSprites *dts = &_depot_gfx_table[dir];
2528  const RailtypeInfo *rti = GetRailTypeInfo(railtype);
2529  SpriteID image = rti->UsesOverlay() ? SPR_FLAT_GRASS_TILE : dts->ground.sprite;
2530  uint32 offset = rti->GetRailtypeSpriteOffset();
2531 
2532  if (image != SPR_FLAT_GRASS_TILE) image += offset;
2533  PaletteID palette = COMPANY_SPRITE_COLOUR(_local_company);
2534 
2535  DrawSprite(image, PAL_NONE, x, y);
2536 
2537  if (rti->UsesOverlay()) {
2539 
2540  switch (dir) {
2541  case DIAGDIR_SW: DrawSprite(ground + RTO_X, PAL_NONE, x, y); break;
2542  case DIAGDIR_SE: DrawSprite(ground + RTO_Y, PAL_NONE, x, y); break;
2543  default: break;
2544  }
2545  }
2546  int depot_sprite = GetCustomRailSprite(rti, INVALID_TILE, RTSG_DEPOT);
2547  if (depot_sprite != 0) offset = depot_sprite - SPR_RAIL_DEPOT_SE_1;
2548 
2549  DrawRailTileSeqInGUI(x, y, dts, offset, 0, palette);
2550 }
2551 
2552 static int GetSlopePixelZ_Track(TileIndex tile, uint x, uint y)
2553 {
2554  if (IsPlainRail(tile)) {
2555  int z;
2556  Slope tileh = GetTilePixelSlope(tile, &z);
2557  if (tileh == SLOPE_FLAT) return z;
2558 
2559  z += ApplyPixelFoundationToSlope(GetRailFoundation(tileh, GetTrackBits(tile)), &tileh);
2560  return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh);
2561  } else {
2562  return GetTileMaxPixelZ(tile);
2563  }
2564 }
2565 
2566 static Foundation GetFoundation_Track(TileIndex tile, Slope tileh)
2567 {
2568  return IsPlainRail(tile) ? GetRailFoundation(tileh, GetTrackBits(tile)) : FlatteningFoundation(tileh);
2569 }
2570 
2571 static void TileLoop_Track(TileIndex tile)
2572 {
2573  RailGroundType old_ground = GetRailGroundType(tile);
2574  RailGroundType new_ground;
2575 
2576  if (old_ground == RAIL_GROUND_WATER) {
2577  TileLoop_Water(tile);
2578  return;
2579  }
2580 
2582  case LT_ARCTIC: {
2583  int z;
2584  Slope slope = GetTileSlope(tile, &z);
2585  bool half = false;
2586 
2587  /* for non-flat track, use lower part of track
2588  * in other cases, use the highest part with track */
2589  if (IsPlainRail(tile)) {
2590  TrackBits track = GetTrackBits(tile);
2591  Foundation f = GetRailFoundation(slope, track);
2592 
2593  switch (f) {
2594  case FOUNDATION_NONE:
2595  /* no foundation - is the track on the upper side of three corners raised tile? */
2596  if (IsSlopeWithThreeCornersRaised(slope)) z++;
2597  break;
2598 
2599  case FOUNDATION_INCLINED_X:
2600  case FOUNDATION_INCLINED_Y:
2601  /* sloped track - is it on a steep slope? */
2602  if (IsSteepSlope(slope)) z++;
2603  break;
2604 
2606  /* only lower part of steep slope */
2607  z++;
2608  break;
2609 
2610  default:
2611  /* if it is a steep slope, then there is a track on higher part */
2612  if (IsSteepSlope(slope)) z++;
2613  z++;
2614  break;
2615  }
2616 
2618  } else {
2619  /* is the depot on a non-flat tile? */
2620  if (slope != SLOPE_FLAT) z++;
2621  }
2622 
2623  /* 'z' is now the lowest part of the highest track bit -
2624  * for sloped track, it is 'z' of lower part
2625  * for two track bits, it is 'z' of higher track bit
2626  * For non-continuous foundations (and STEEP_BOTH), 'half' is set */
2627  if (z > GetSnowLine()) {
2628  if (half && z - GetSnowLine() == 1) {
2629  /* track on non-continuous foundation, lower part is not under snow */
2630  new_ground = RAIL_GROUND_HALF_SNOW;
2631  } else {
2632  new_ground = RAIL_GROUND_ICE_DESERT;
2633  }
2634  goto set_ground;
2635  }
2636  break;
2637  }
2638 
2639  case LT_TROPIC:
2640  if (GetTropicZone(tile) == TROPICZONE_DESERT) {
2641  new_ground = RAIL_GROUND_ICE_DESERT;
2642  goto set_ground;
2643  }
2644  break;
2645  }
2646 
2647  new_ground = RAIL_GROUND_GRASS;
2648 
2649  if (IsPlainRail(tile) && old_ground != RAIL_GROUND_BARREN) { // wait until bottom is green
2650  /* determine direction of fence */
2651  TrackBits rail = GetTrackBits(tile);
2652 
2653  Owner owner = GetTileOwner(tile);
2654  byte fences = 0;
2655 
2656  for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
2658 
2659  /* Track bit on this edge => no fence. */
2660  if ((rail & dir_to_trackbits[d]) != TRACK_BIT_NONE) continue;
2661 
2662  TileIndex tile2 = tile + TileOffsByDiagDir(d);
2663 
2664  /* Show fences if it's a house, industry, object, road, tunnelbridge or not owned by us. */
2665  if (!IsValidTile(tile2) || IsTileType(tile2, MP_HOUSE) || IsTileType(tile2, MP_INDUSTRY) ||
2666  IsTileType(tile2, MP_ROAD) || (IsTileType(tile2, MP_OBJECT) && !IsObjectType(tile2, OBJECT_OWNED_LAND)) || IsTileType(tile2, MP_TUNNELBRIDGE) || !IsTileOwner(tile2, owner)) {
2667  fences |= 1 << d;
2668  }
2669  }
2670 
2671  switch (fences) {
2672  case 0: break;
2673  case (1 << DIAGDIR_NE): new_ground = RAIL_GROUND_FENCE_NE; break;
2674  case (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_SE; break;
2675  case (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_SW; break;
2676  case (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_NW; break;
2677  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_NESW; break;
2678  case (1 << DIAGDIR_SE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_SENW; break;
2679  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_VERT1; break;
2680  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_HORIZ2; break;
2681  case (1 << DIAGDIR_SE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_HORIZ1; break;
2682  case (1 << DIAGDIR_SW) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_VERT2; break;
2683  default: NOT_REACHED();
2684  }
2685  }
2686 
2687 set_ground:
2688  if (old_ground != new_ground) {
2689  SetRailGroundType(tile, new_ground);
2690  MarkTileDirtyByTile(tile);
2691  }
2692 }
2693 
2694 
2695 static TrackStatus GetTileTrackStatus_Track(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
2696 {
2697  /* Case of half tile slope with water. */
2698  if (mode == TRANSPORT_WATER && IsPlainRail(tile) && GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(GetTileSlope(tile))) {
2699  TrackBits tb = GetTrackBits(tile);
2700  switch (tb) {
2701  default: NOT_REACHED();
2702  case TRACK_BIT_UPPER: tb = TRACK_BIT_LOWER; break;
2703  case TRACK_BIT_LOWER: tb = TRACK_BIT_UPPER; break;
2704  case TRACK_BIT_LEFT: tb = TRACK_BIT_RIGHT; break;
2705  case TRACK_BIT_RIGHT: tb = TRACK_BIT_LEFT; break;
2706  }
2708  }
2709 
2710  if (mode != TRANSPORT_RAIL) return 0;
2711 
2712  TrackBits trackbits = TRACK_BIT_NONE;
2713  TrackdirBits red_signals = TRACKDIR_BIT_NONE;
2714 
2715  switch (GetRailTileType(tile)) {
2716  default: NOT_REACHED();
2717  case RAIL_TILE_NORMAL:
2718  trackbits = GetTrackBits(tile);
2719  break;
2720 
2721  case RAIL_TILE_SIGNALS: {
2722  trackbits = GetTrackBits(tile);
2723  byte a = GetPresentSignals(tile);
2724  uint b = GetSignalStates(tile);
2725 
2726  b &= a;
2727 
2728  /* When signals are not present (in neither direction),
2729  * we pretend them to be green. Otherwise, it depends on
2730  * the signal type. For signals that are only active from
2731  * one side, we set the missing signals explicitly to
2732  * `green'. Otherwise, they implicitly become `red'. */
2733  if (!IsOnewaySignal(tile, TRACK_UPPER) || (a & SignalOnTrack(TRACK_UPPER)) == 0) b |= ~a & SignalOnTrack(TRACK_UPPER);
2734  if (!IsOnewaySignal(tile, TRACK_LOWER) || (a & SignalOnTrack(TRACK_LOWER)) == 0) b |= ~a & SignalOnTrack(TRACK_LOWER);
2735 
2736  if ((b & 0x8) == 0) red_signals |= (TRACKDIR_BIT_LEFT_N | TRACKDIR_BIT_X_NE | TRACKDIR_BIT_Y_SE | TRACKDIR_BIT_UPPER_E);
2737  if ((b & 0x4) == 0) red_signals |= (TRACKDIR_BIT_LEFT_S | TRACKDIR_BIT_X_SW | TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_UPPER_W);
2738  if ((b & 0x2) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_LOWER_E);
2739  if ((b & 0x1) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_S | TRACKDIR_BIT_LOWER_W);
2740 
2741  break;
2742  }
2743 
2744  case RAIL_TILE_DEPOT: {
2746 
2747  if (side != INVALID_DIAGDIR && side != dir) break;
2748 
2749  trackbits = DiagDirToDiagTrackBits(dir);
2750  break;
2751  }
2752  }
2753 
2754  return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), red_signals);
2755 }
2756 
2757 static bool ClickTile_Track(TileIndex tile)
2758 {
2759  if (!IsRailDepot(tile)) return false;
2760 
2761  ShowDepotWindow(tile, VEH_TRAIN);
2762  return true;
2763 }
2764 
2765 static void GetTileDesc_Track(TileIndex tile, TileDesc *td)
2766 {
2767  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
2768  td->rail_speed = rti->max_speed;
2769  td->railtype = rti->strings.name;
2770  td->owner[0] = GetTileOwner(tile);
2771  switch (GetRailTileType(tile)) {
2772  case RAIL_TILE_NORMAL:
2773  td->str = STR_LAI_RAIL_DESCRIPTION_TRACK;
2774  break;
2775 
2776  case RAIL_TILE_SIGNALS: {
2777  static const StringID signal_type[6][6] = {
2778  {
2779  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_SIGNALS,
2780  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS,
2781  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS,
2782  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS,
2783  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS,
2784  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS
2785  },
2786  {
2787  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS,
2788  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRESIGNALS,
2789  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS,
2790  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS,
2791  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS,
2792  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS
2793  },
2794  {
2795  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS,
2796  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS,
2797  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXITSIGNALS,
2798  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS,
2799  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS,
2800  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS
2801  },
2802  {
2803  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS,
2804  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS,
2805  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS,
2806  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBOSIGNALS,
2807  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS,
2808  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS
2809  },
2810  {
2811  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS,
2812  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS,
2813  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS,
2814  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS,
2815  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBSSIGNALS,
2816  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS
2817  },
2818  {
2819  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS,
2820  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS,
2821  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS,
2822  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS,
2823  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS,
2824  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRYSIGNALS
2825  }
2826  };
2827 
2828  SignalType primary_signal;
2829  SignalType secondary_signal;
2830  if (HasSignalOnTrack(tile, TRACK_UPPER)) {
2831  primary_signal = GetSignalType(tile, TRACK_UPPER);
2832  secondary_signal = HasSignalOnTrack(tile, TRACK_LOWER) ? GetSignalType(tile, TRACK_LOWER) : primary_signal;
2833  } else {
2834  secondary_signal = primary_signal = GetSignalType(tile, TRACK_LOWER);
2835  }
2836 
2837  td->str = signal_type[secondary_signal][primary_signal];
2838  break;
2839  }
2840 
2841  case RAIL_TILE_DEPOT:
2842  td->str = STR_LAI_RAIL_DESCRIPTION_TRAIN_DEPOT;
2843  if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) {
2844  if (td->rail_speed > 0) {
2845  td->rail_speed = min(td->rail_speed, 61);
2846  } else {
2847  td->rail_speed = 61;
2848  }
2849  }
2850  td->build_date = Depot::GetByTile(tile)->build_date;
2851  break;
2852 
2853  default:
2854  NOT_REACHED();
2855  }
2856 }
2857 
2858 static void ChangeTileOwner_Track(TileIndex tile, Owner old_owner, Owner new_owner)
2859 {
2860  if (!IsTileOwner(tile, old_owner)) return;
2861 
2862  if (new_owner != INVALID_OWNER) {
2863  /* Update company infrastructure counts. No need to dirty windows here, we'll redraw the whole screen anyway. */
2864  uint num_pieces = 1;
2865  if (IsPlainRail(tile)) {
2866  TrackBits bits = GetTrackBits(tile);
2867  num_pieces = CountBits(bits);
2868  if (TracksOverlap(bits)) num_pieces *= num_pieces;
2869  }
2870  RailType rt = GetRailType(tile);
2871  Company::Get(old_owner)->infrastructure.rail[rt] -= num_pieces;
2872  Company::Get(new_owner)->infrastructure.rail[rt] += num_pieces;
2873 
2874  if (HasSignals(tile)) {
2875  uint num_sigs = CountBits(GetPresentSignals(tile));
2876  Company::Get(old_owner)->infrastructure.signal -= num_sigs;
2877  Company::Get(new_owner)->infrastructure.signal += num_sigs;
2878  }
2879 
2880  SetTileOwner(tile, new_owner);
2881  } else {
2883  }
2884 }
2885 
2886 static const byte _fractcoords_behind[4] = { 0x8F, 0x8, 0x80, 0xF8 };
2887 static const byte _fractcoords_enter[4] = { 0x8A, 0x48, 0x84, 0xA8 };
2888 static const int8 _deltacoord_leaveoffset[8] = {
2889  -1, 0, 1, 0, /* x */
2890  0, 1, 0, -1 /* y */
2891 };
2892 
2893 
2901 {
2903  int length = v->CalcNextVehicleOffset();
2904 
2905  switch (dir) {
2906  case DIAGDIR_NE: return ((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) - (length + 1)));
2907  case DIAGDIR_SE: return -((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) + (length + 1)));
2908  case DIAGDIR_SW: return -((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) + (length + 1)));
2909  case DIAGDIR_NW: return ((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) - (length + 1)));
2910  default: NOT_REACHED();
2911  }
2912 }
2913 
2919 {
2920  /* This routine applies only to trains in depot tiles. */
2921  if (u->type != VEH_TRAIN || !IsRailDepotTile(tile)) return VETSB_CONTINUE;
2922 
2923  /* Depot direction. */
2925 
2926  byte fract_coord = (x & 0xF) + ((y & 0xF) << 4);
2927 
2928  /* Make sure a train is not entering the tile from behind. */
2929  if (_fractcoords_behind[dir] == fract_coord) return VETSB_CANNOT_ENTER;
2930 
2931  Train *v = Train::From(u);
2932 
2933  /* Leaving depot? */
2934  if (v->direction == DiagDirToDir(dir)) {
2935  /* Calculate the point where the following wagon should be activated. */
2936  int length = v->CalcNextVehicleOffset();
2937 
2938  byte fract_coord_leave =
2939  ((_fractcoords_enter[dir] & 0x0F) + // x
2940  (length + 1) * _deltacoord_leaveoffset[dir]) +
2941  (((_fractcoords_enter[dir] >> 4) + // y
2942  ((length + 1) * _deltacoord_leaveoffset[dir + 4])) << 4);
2943 
2944  if (fract_coord_leave == fract_coord) {
2945  /* Leave the depot. */
2946  if ((v = v->Next()) != NULL) {
2947  v->vehstatus &= ~VS_HIDDEN;
2948  v->track = (DiagDirToAxis(dir) == AXIS_X ? TRACK_BIT_X : TRACK_BIT_Y);
2949  }
2950  }
2951  } else if (_fractcoords_enter[dir] == fract_coord) {
2952  /* Entering depot. */
2953  assert(DiagDirToDir(ReverseDiagDir(dir)) == v->direction);
2954  v->track = TRACK_BIT_DEPOT,
2955  v->vehstatus |= VS_HIDDEN;
2956  v->direction = ReverseDir(v->direction);
2957  if (v->Next() == NULL) VehicleEnterDepot(v->First());
2958  v->tile = tile;
2959 
2961  return VETSB_ENTERED_WORMHOLE;
2962  }
2963 
2964  return VETSB_CONTINUE;
2965 }
2966 
2978 static CommandCost TestAutoslopeOnRailTile(TileIndex tile, uint flags, int z_old, Slope tileh_old, int z_new, Slope tileh_new, TrackBits rail_bits)
2979 {
2980  if (!_settings_game.construction.build_on_slopes || !AutoslopeEnabled()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2981 
2982  /* Is the slope-rail_bits combination valid in general? I.e. is it safe to call GetRailFoundation() ? */
2983  if (CheckRailSlope(tileh_new, rail_bits, TRACK_BIT_NONE, tile).Failed()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2984 
2985  /* Get the slopes on top of the foundations */
2986  z_old += ApplyFoundationToSlope(GetRailFoundation(tileh_old, rail_bits), &tileh_old);
2987  z_new += ApplyFoundationToSlope(GetRailFoundation(tileh_new, rail_bits), &tileh_new);
2988 
2989  Corner track_corner;
2990  switch (rail_bits) {
2991  case TRACK_BIT_LEFT: track_corner = CORNER_W; break;
2992  case TRACK_BIT_LOWER: track_corner = CORNER_S; break;
2993  case TRACK_BIT_RIGHT: track_corner = CORNER_E; break;
2994  case TRACK_BIT_UPPER: track_corner = CORNER_N; break;
2995 
2996  /* Surface slope must not be changed */
2997  default:
2998  if (z_old != z_new || tileh_old != tileh_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2999  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
3000  }
3001 
3002  /* The height of the track_corner must not be changed. The rest ensures GetRailFoundation() already. */
3003  z_old += GetSlopeZInCorner(RemoveHalftileSlope(tileh_old), track_corner);
3004  z_new += GetSlopeZInCorner(RemoveHalftileSlope(tileh_new), track_corner);
3005  if (z_old != z_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
3006 
3007  CommandCost cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
3008  /* Make the ground dirty, if surface slope has changed */
3009  if (tileh_old != tileh_new) {
3010  /* If there is flat water on the lower halftile add the cost for clearing it */
3011  if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old)) cost.AddCost(_price[PR_CLEAR_WATER]);
3012  if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN);
3013  }
3014  return cost;
3015 }
3016 
3020 static Vehicle *EnsureNoShipProc(Vehicle *v, void *data)
3021 {
3022  return v->type == VEH_SHIP ? v : NULL;
3023 }
3024 
3025 static CommandCost TerraformTile_Track(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
3026 {
3027  int z_old;
3028  Slope tileh_old = GetTileSlope(tile, &z_old);
3029  if (IsPlainRail(tile)) {
3030  TrackBits rail_bits = GetTrackBits(tile);
3031  /* Is there flat water on the lower halftile that must be cleared expensively? */
3032  bool was_water = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old));
3033 
3034  /* Allow clearing the water only if there is no ship */
3035  if (was_water && HasVehicleOnPos(tile, NULL, &EnsureNoShipProc)) return_cmd_error(STR_ERROR_SHIP_IN_THE_WAY);
3036 
3037  /* First test autoslope. However if it succeeds we still have to test the rest, because non-autoslope terraforming is cheaper. */
3038  CommandCost autoslope_result = TestAutoslopeOnRailTile(tile, flags, z_old, tileh_old, z_new, tileh_new, rail_bits);
3039 
3040  /* When there is only a single horizontal/vertical track, one corner can be terraformed. */
3041  Corner allowed_corner;
3042  switch (rail_bits) {
3043  case TRACK_BIT_RIGHT: allowed_corner = CORNER_W; break;
3044  case TRACK_BIT_UPPER: allowed_corner = CORNER_S; break;
3045  case TRACK_BIT_LEFT: allowed_corner = CORNER_E; break;
3046  case TRACK_BIT_LOWER: allowed_corner = CORNER_N; break;
3047  default: return autoslope_result;
3048  }
3049 
3050  Foundation f_old = GetRailFoundation(tileh_old, rail_bits);
3051 
3052  /* Do not allow terraforming if allowed_corner is part of anti-zig-zag foundations */
3053  if (tileh_old != SLOPE_NS && tileh_old != SLOPE_EW && IsSpecialRailFoundation(f_old)) return autoslope_result;
3054 
3055  /* Everything is valid, which only changes allowed_corner */
3056  for (Corner corner = (Corner)0; corner < CORNER_END; corner = (Corner)(corner + 1)) {
3057  if (allowed_corner == corner) continue;
3058  if (z_old + GetSlopeZInCorner(tileh_old, corner) != z_new + GetSlopeZInCorner(tileh_new, corner)) return autoslope_result;
3059  }
3060 
3061  /* Make the ground dirty */
3062  if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN);
3063 
3064  /* allow terraforming */
3065  return CommandCost(EXPENSES_CONSTRUCTION, was_water ? _price[PR_CLEAR_WATER] : (Money)0);
3067  AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRailDepotDirection(tile))) {
3068  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
3069  }
3070  return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
3071 }
3072 
3073 
3074 extern const TileTypeProcs _tile_type_rail_procs = {
3075  DrawTile_Track, // draw_tile_proc
3076  GetSlopePixelZ_Track, // get_slope_z_proc
3077  ClearTile_Track, // clear_tile_proc
3078  NULL, // add_accepted_cargo_proc
3079  GetTileDesc_Track, // get_tile_desc_proc
3080  GetTileTrackStatus_Track, // get_tile_track_status_proc
3081  ClickTile_Track, // click_tile_proc
3082  NULL, // animate_tile_proc
3083  TileLoop_Track, // tile_loop_proc
3084  ChangeTileOwner_Track, // change_tile_owner_proc
3085  NULL, // add_produced_cargo_proc
3086  VehicleEnter_Track, // vehicle_enter_tile_proc
3087  GetFoundation_Track, // get_foundation_proc
3088  TerraformTile_Track, // terraform_tile_proc
3089 };
bool disable_elrails
when true, the elrails are disabled
Used for iterations.
Definition: rail_type.h:35
Functions related to OTTD&#39;s strings.
static TileType GetTileType(TileIndex tile)
Get the tiletype of a given tile.
Definition: tile_map.h:98
Piece of rail on slope with north-west raised.
Definition: rail.h:71
don&#39;t allow building on structures
Definition: command_type.h:346
static bool IsHalftileSlope(Slope s)
Checks for non-continuous slope on halftile foundations.
Definition: slope_func.h:49
bool HasVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc)
Checks whether a vehicle is on a specific location.
Definition: vehicle.cpp:513
uint ApplyFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.cpp:164
VehicleSettings vehicle
options for vehicles
static bool HasPowerOnRail(RailType enginetype, RailType tiletype)
Checks if an engine of the given RailType got power on a tile with a given RailType.
Definition: rail.h:326
Functions/types related to NewGRF debugging.
void InitRailTypes()
Resolve sprites of custom rail types.
Definition: rail_cmd.cpp:141
Grass with a fence at the northern side.
Definition: rail_map.h:498
CommandCost EnsureNoTrainOnTrackBits(TileIndex tile, TrackBits track_bits)
Tests if a vehicle interacts with the specified track bits.
Definition: vehicle.cpp:601
the north corner of the tile is raised
Definition: slope_type.h:55
uint32 PaletteID
The number of the palette.
Definition: gfx_type.h:20
Corner
Enumeration of tile corners.
Definition: slope_type.h:24
CommandCost CmdRemoveSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Remove signals on a stretch of track.
Definition: rail_cmd.cpp:1526
static bool HasSignalOnTrackdir(TileIndex tile, Trackdir trackdir)
Checks for the presence of signals along the given trackdir on the given rail tile.
Definition: rail_map.h:427
Vehicle is stopped by the player.
Definition: vehicle_base.h:33
void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner)
Add track to signal update buffer.
Definition: signal.cpp:582
GameSettings _settings_game
Game settings of a running game or the scenario editor.
Definition: settings.cpp:77
Definition of stuff that is very close to a company, like the company struct itself.
int CalcNextVehicleOffset() const
Calculate the offset from this vehicle&#39;s center to the following center taking the vehicle lengths in...
Definition: train.h:170
static void DrawTrackFence(const TileInfo *ti, SpriteID base_image, uint num_sprites, RailFenceOffset rfo)
Draw a track fence.
Definition: rail_cmd.cpp:1954
NewGRF handling of rail types.
static const RailtypeInfo * GetRailTypeInfo(RailType railtype)
Returns a pointer to the Railtype information for a given railtype.
Definition: rail.h:298
static TropicZone GetTropicZone(TileIndex tile)
Get the tropic zone.
Definition: tile_map.h:240
static TransportType GetTunnelBridgeTransportType(TileIndex t)
Tunnel: Get the transport type of the tunnel (road or rail) Bridge: Get the transport type of the bri...
Depot (one entrance)
Definition: rail_map.h:27
static uint GetSaveSlopeZ(uint x, uint y, Track track)
Get surface height in point (x,y) On tiles with halftile foundations move (x,y) to a safe point wrt...
Definition: rail_cmd.cpp:1862
static void SetTileOwner(TileIndex tile, Owner owner)
Sets the owner of a tile.
Definition: tile_map.h:200
Tile information, used while rendering the tile.
Definition: tile_cmd.h:44
south and east corner are raised
Definition: slope_type.h:59
Slope NW, Track Y, Fence NE.
Definition: rail.h:101
static Money RailConvertCost(RailType from, RailType to)
Calculates the cost of rail conversion.
Definition: rail.h:374
SpriteID single_sloped
single piece of rail for slopes
Definition: rail.h:134
Grass with a fence at the NE and SW edges.
Definition: rail_map.h:494
static const TrackBits _valid_tracks_without_foundation[15]
Valid TrackBits on a specific (non-steep)-slope without foundation.
Definition: rail_cmd.cpp:282
the west corner of the tile is raised
Definition: slope_type.h:52
presignal block exit
Definition: signal_type.h:28
void TileLoop_Water(TileIndex tile)
Let a water tile floods its diagonal adjoining tiles called from tunnelbridge_cmd, and by TileLoop_Industry() and TileLoop_Track()
Definition: water_cmd.cpp:1153
byte landscape
the landscape we&#39;re currently in
SignalType
Type of signal, i.e.
Definition: signal_type.h:25
SpriteID auto_rail
button for the autorail construction
Definition: rail.h:148
DirectionByte direction
facing
Definition: vehicle_base.h:271
company buildings - depots, stations, HQ, ...
Definition: transparency.h:29
RailType
Enumeration for all possible railtypes.
Definition: rail_type.h:29
"Arrow" to the south-west
Definition: track_type.h:54
Tile is desert.
Definition: tile_type.h:73
static const uint LEVELCROSSING_TRACKBIT_FACTOR
Multiplier for how many regular track bits a level crossing counts.
Definition: economy_type.h:216
Slope FLAT, Track Y, Fence NE.
Definition: rail.h:95
static const RailtypeInfo _original_railtypes[]
Global Railtype definition.
Definition: railtypes.h:21
presignal block entry
Definition: signal_type.h:27
void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
Mark bridge tiles dirty.
Part of an industry.
Definition: tile_type.h:51
byte _display_opt
What do we want to draw/do?
static FenceOffset _fence_offsets[]
Offsets for drawing fences.
Definition: rail_cmd.cpp:1928
uint GetPartialPixelZ(int x, int y, Slope corners)
Determines height at given coordinate of a slope.
Definition: landscape.cpp:217
CommandCost EnsureNoVehicleOnGround(TileIndex tile)
Ensure there is no vehicle at the ground at the given position.
Definition: vehicle.cpp:539
Flag for an invalid DiagDirection.
CommandCost CmdBuildSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build signals on a stretch of track.
Definition: rail_cmd.cpp:1434
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:246
static Corner GetHalftileFoundationCorner(Foundation f)
Returns the halftile corner of a halftile-foundation.
Definition: slope_func.h:335
Functions related to dates.
static bool IsInsideMM(const T x, const uint min, const uint max)
Checks if a value is in an interval.
Definition: math_func.hpp:266
SpriteID build_y_rail
button for building single rail in Y direction
Definition: rail.h:147
static VehicleEnterTileStatus VehicleEnter_Track(Vehicle *u, TileIndex tile, int x, int y)
Tile callback routine when vehicle enters tile.
Definition: rail_cmd.cpp:2918
static T ToggleBit(T &x, const uint8 y)
Toggles a bit in a variable.
static Track TrackdirToTrack(Trackdir trackdir)
Returns the Track that a given Trackdir represents.
Definition: track_func.h:272
CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build signals, alternate between double/single, signal/semaphore, pre/exit/combo-signals, and what-else not.
Definition: rail_cmd.cpp:1038
Basic road type.
Definition: road_type.h:24
Piece of rail in southern corner.
Definition: rail.h:65
TileType
The different types of tiles.
Definition: tile_type.h:42
static void DrawTrackFence_SE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
Draw fence at SE border matching the tile slope.
Definition: rail_cmd.cpp:1981
Base for the train class.
static bool HasSignalOnTrack(TileIndex tile, Track track)
Checks for the presence of signals (either way) on the given track on the given rail tile...
Definition: rail_map.h:414
RailTypeFlags flags
Bit mask of rail type flags.
Definition: rail.h:202
static T SetBit(T &x, const uint8 y)
Set a bit in a variable.
Offsets for drawing fences.
Definition: rail_cmd.cpp:1919
static void MakeShore(TileIndex t)
Helper function to make a coast tile.
Definition: water_map.h:354
north and south corner are raised
Definition: slope_type.h:62
Track
These are used to specify a single track.
Definition: track_type.h:21
static TrackBits GetCrossingRailBits(TileIndex tile)
Get the rail track bits of a level crossing.
Definition: road_map.h:338
uint16 cur_speed
current speed
Definition: vehicle_base.h:293
A tile with road (or tram tracks)
Definition: tile_type.h:45
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition: command_func.h:25
Ballast for junction &#39;pointing&#39; NE.
Definition: rail.h:74
int y_offs
Bounding box Y offset.
Definition: rail_cmd.cpp:1922
Depot view; Window numbers:
Definition: window_type.h:346
Slope tileh
Slope of the tile.
Definition: tile_cmd.h:47
bool FloodHalftile(TileIndex t)
Called from water_cmd if a non-flat rail-tile gets flooded and should be converted to shore...
Definition: rail_cmd.cpp:753
Full road along the x-axis (south-west + north-east)
Definition: road_type.h:61
static const TrackBits _valid_tracks_on_leveled_foundation[15]
Valid TrackBits on a specific (non-steep)-slope with leveled foundation.
Definition: rail_cmd.cpp:304
Track right, direction south.
Definition: track_type.h:113
Ballast for junction &#39;pointing&#39; NW.
Definition: rail.h:76
SignalState
These are states in which a signal can be.
Definition: signal_type.h:46
CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build a single piece of rail.
Definition: rail_cmd.cpp:446
bool ValParamRailtype(const RailType rail)
Validate functions for rail building.
Definition: rail.cpp:208
Grass with a fence at the eastern side.
Definition: rail_map.h:495
Piece of rail on slope with north-east raised.
Definition: rail.h:68
static bool IsOnewaySignal(TileIndex t, Track track)
One-way signals can&#39;t be passed the &#39;wrong&#39; way.
Definition: rail_map.h:320
Transport over water.
SmallVector< Train *, 16 > TrainList
Helper type for lists/vectors of trains.
Definition: rail_cmd.cpp:44
static Foundation HalftileFoundation(Corner corner)
Returns the halftile foundation for single horizontal/vertical track.
Definition: slope_func.h:393
static bool IsValidCorner(Corner corner)
Rangecheck for Corner enumeration.
Definition: slope_func.h:26
Functions related to vehicles.
static TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track bits incidating with that diagdir. ...
Definition: track_func.h:534
void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner)
Add side of tile to signal update buffer.
Definition: signal.cpp:614
Piece of rail in western corner.
Definition: rail.h:67
SpriteID single_e
single piece of rail in the eastern corner
Definition: rail.h:132
static uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:207
void VehicleEnterDepot(Vehicle *v)
Vehicle entirely entered the depot, update its status, orders, vehicle windows, service it...
Definition: vehicle.cpp:1437
Fence images.
Definition: rail.h:51
PathfinderSettings pf
settings for all pathfinders
Build vehicle; Window numbers:
Definition: window_type.h:378
CommandCost CmdRemoveRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build rail on a stretch of track.
Definition: rail_cmd.cpp:947
static TileIndex TileAddByDiagDir(TileIndex tile, DiagDirection dir)
Adds a DiagDir to a tile.
Definition: map_func.h:384
Vehicle data structure.
Definition: vehicle_base.h:212
Base for all depots (except hangars)
void Clear()
Remove all items from the list.
const T * Begin() const
Get the pointer to the first item (const)
Tile description for the &#39;land area information&#39; tool.
Definition: tile_cmd.h:53
demolish a tile
Definition: command_type.h:182
CommandCost CheckTileOwnership(TileIndex tile)
Check whether the current owner owns the stuff on the given tile.
RailTypeLabelList alternate_labels
Rail type labels this type provides in addition to the main label.
Definition: rail.h:232
Tindex index
Index of this pool item.
Definition: pool_type.hpp:147
the east corner of the tile is raised
Definition: slope_type.h:54
static RoadBits GetRoadBits(TileIndex t, RoadType rt)
Get the present road bits for a specific road type.
Definition: road_map.h:111
static int CDECL CompareRailTypes(const RailType *first, const RailType *second)
Compare railtypes based on their sorting order.
Definition: rail_cmd.cpp:133
Icy or sandy.
Definition: rail_map.h:499
Northeast, upper right on your monitor.
static bool IsSteepSlope(Slope s)
Checks if a slope is steep.
Definition: slope_func.h:38
T * First() const
Get the first vehicle in the chain.
Also draw details of track and roads.
Definition: openttd.h:47
Track in the left corner of the tile (west)
Definition: track_type.h:27
Slope FLAT, Track LOWER, Fence N.
Definition: rail.h:105
Helper functions to extract data from command parameters.
void ResetRailTypes()
Reset all rail type information to its default values.
Definition: rail_cmd.cpp:66
bool forbid_90_deg
forbid trains to make 90 deg turns
Grass with a fence at the SW edge.
Definition: rail_map.h:493
static Track DiagDirToDiagTrack(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track incidating with that diagdir.
Definition: track_func.h:522
Nothing (dirt)
Definition: rail_map.h:487
Simple vector template class.
static Corner GetHalftileSlopeCorner(Slope s)
Returns the leveled halftile of a halftile slope.
Definition: slope_func.h:150
A railway.
Definition: tile_type.h:44
static Track GetRailStationTrack(TileIndex t)
Get the rail track of a rail station tile.
Definition: station_map.h:350
RailTypes compatible_railtypes
bitmask to the OTHER railtypes on which an engine of THIS railtype can physically travel ...
Definition: rail.h:182
struct RailtypeInfo::@39 cursor
Cursors associated with the rail type.
Contains objects such as transmitters and owned land.
Definition: tile_type.h:53
static void DrawTrackFence_NW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
Draw fence at NW border matching the tile slope.
Definition: rail_cmd.cpp:1971
Standard non-electric rails.
Definition: rail_type.h:31
Nothing special.
static void SetHasSignals(TileIndex tile, bool signals)
Add/remove the &#39;has signal&#39; bit from the RailTileType.
Definition: rail_map.h:84
south and west corner are raised
Definition: slope_type.h:58
static void SetTrackBits(TileIndex t, TrackBits b)
Sets the track bits of the given tile.
Definition: rail_map.h:148
Slope FLAT, Track LEFT, Fence E.
Definition: rail.h:96
static void DrawTrackDetails(const TileInfo *ti, const RailtypeInfo *rti)
Draw track fences.
Definition: rail_cmd.cpp:2013
Common return value for all commands.
Definition: command_type.h:25
Used for iterations.
static bool HasExactlyOneBit(T value)
Test whether value has exactly 1 bit set.
CursorID autorail
Cursor for autorail tool.
Definition: rail.h:160
static Slope SlopeWithOneCornerRaised(Corner corner)
Returns the slope with a specific corner raised.
Definition: slope_func.h:101
RailType AllocateRailType(RailTypeLabel label)
Allocate a new rail type label.
Definition: rail_cmd.cpp:161
static bool IsLevelCrossing(TileIndex t)
Return whether a tile is a level crossing.
Definition: road_map.h:68
static bool RailNoLevelCrossings(RailType rt)
Test if a RailType disallows build of level crossings.
Definition: rail.h:336
static uint GetSignalStates(TileIndex tile)
Set the states of the signals (Along/AgainstTrackDir)
Definition: rail_map.h:363
byte vehstatus
Status.
Definition: vehicle_base.h:317
static DiagDirection TrackdirToExitdir(Trackdir trackdir)
Maps a trackdir to the (4-way) direction the tile is exited when following that trackdir.
Definition: track_func.h:449
static Train * From(Vehicle *v)
Converts a Vehicle to SpecializedVehicle with type checking.
SpriteID track_y
single piece of rail in Y direction, with ground
Definition: rail.h:125
static CommandCost TestAutoslopeOnRailTile(TileIndex tile, uint flags, int z_old, Slope tileh_old, int z_new, Slope tileh_new, TrackBits rail_bits)
Tests if autoslope is allowed.
Definition: rail_cmd.cpp:2978
const T * End() const
Get the pointer behind the last valid item (const)
a flat tile
Definition: slope_type.h:51
uint16 rail_speed
Speed limit of rail (bridges and track)
Definition: tile_cmd.h:66
int z
Height.
Definition: tile_cmd.h:49
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:15
void DrawFoundation(TileInfo *ti, Foundation f)
Draw foundation f at tile ti.
Definition: landscape.cpp:472
void AddCost(const Money &cost)
Adds the given cost to the cost of the command.
Definition: command_type.h:64
Owner owner[4]
Name of the owner(s)
Definition: tile_cmd.h:55
static Corner GetHighestSlopeCorner(Slope s)
Returns the highest corner of a slope (one corner raised or a steep slope).
Definition: slope_func.h:128
static T SB(T &x, const uint8 s, const uint8 n, const U d)
Set n bits in x starting at bit s to d.
CursorID rail_ew
Cursor for building rail in E-W direction.
Definition: rail.h:158
Grass with a fence at the NW and SE edges.
Definition: rail_map.h:491
static TrackBits CornerToTrackBits(Corner corner)
Returns a single horizontal/vertical trackbit that is in a specific tile corner.
Definition: track_func.h:109
void MakeError(StringID message)
Makes this CommandCost behave like an error command.
Definition: command_type.h:102
"Arrow" to the north-west
Definition: track_type.h:55
static bool IsObjectType(TileIndex t, ObjectType type)
Check whether the object on a tile is of a specific type.
Definition: object_map.h:27
void YapfNotifyTrackLayoutChange(TileIndex tile, Track track)
Use this function to notify YAPF that track layout (or signal configuration) has change.
Definition: yapf_rail.cpp:644
north and east corner are raised
Definition: slope_type.h:60
This struct contains all the info that is needed to draw and construct tracks.
Definition: rail.h:118
static bool HasRoadWorks(TileIndex t)
Check if a tile has road works.
Definition: road_map.h:483
T * Append(uint to_add=1)
Append an item and return it.
No rail types.
Definition: rail_type.h:54
Date build_date
Date of construction.
Definition: depot_base.h:27
Class to backup a specific variable and restore it later.
Definition: backup_type.hpp:23
static byte SignalOnTrack(Track track)
Maps a Track to the bits that store the status of the two signals that can be present on the given tr...
Definition: signal_func.h:44
Track upper, direction east.
Definition: track_type.h:110
CompanyByte _local_company
Company controlled by the human player at this client. Can also be COMPANY_SPECTATOR.
Definition: company_cmd.cpp:46
company bankrupts, skip money check, skip vehicle on tile check in some cases
Definition: command_type.h:351
Functions related to (drawing on) viewports.
Normal rail tile with signals.
Definition: rail_map.h:26
SpriteID signals[SIGTYPE_END][2][2]
signal GUI sprites (type, variant, state)
Definition: rail.h:152
static bool HasStationRail(TileIndex t)
Has this station tile a rail? In other words, is this station tile a rail station or rail waypoint...
Definition: station_map.h:136
Right track.
Definition: track_type.h:48
static Foundation SpecialRailFoundation(Corner corner)
Returns the special rail foundation for single horizontal/vertical track.
Definition: slope_func.h:405
int16 y
The y value of the coordinate.
Definition: map_type.h:61
RailFenceOffset
Offsets from base sprite for fence sprites.
Definition: rail.h:93
Slope GetTileSlope(TileIndex tile, int *h)
Return the slope of a given tile inside the map.
Definition: tile_map.cpp:61
static Track TrackBitsToTrack(TrackBits tracks)
Converts TrackBits to Track.
Definition: track_func.h:203
static uint GetPresentSignals(TileIndex tile)
Get whether the given signals are present (Along/AgainstTrackDir)
Definition: rail_map.h:394
static bool IsValidTile(TileIndex tile)
Checks if a tile is valid.
Definition: tile_map.h:163
Track right, direction north.
Definition: track_type.h:120
SpriteID single_y
single piece of rail in Y direction, without ground
Definition: rail.h:129
build a single rail track
Definition: command_type.h:180
static bool IsBridgeAbove(TileIndex t)
checks if a bridge is set above the ground of this tile
Definition: bridge_map.h:45
Snow only on higher part of slope (steep or one corner raised)
Definition: rail_map.h:501
TrackBits
Bitfield corresponding to Track.
Definition: track_type.h:41
Track x-axis, direction north-east.
Definition: track_type.h:108
static bool IsTileOwner(TileIndex tile, Owner owner)
Checks if a tile belongs to the given owner.
Definition: tile_map.h:216
Left and right track.
Definition: track_type.h:51
static void DrawRailTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 total_offset, uint32 newgrf_offset, PaletteID default_palette)
Draw tile sprite sequence in GUI with railroad specifics.
Definition: sprite.h:101
The tile does not flood neighboured tiles.
Definition: water.h:22
static Slope ComplementSlope(Slope s)
Return the complement of a slope.
Definition: slope_func.h:78
struct RailtypeInfo::@40 strings
Strings associated with the rail type.
SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context, uint *num_results)
Get the sprite to draw for the given tile.
uint x
X position of the tile in unit coordinates.
Definition: tile_cmd.h:45
static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build many signals by dragging; AutoSignals.
Definition: rail_cmd.cpp:1264
None of the directions are disallowed.
Definition: road_map.h:256
static TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
Convert a DiagDirection to a TileIndexDiff.
Definition: map_func.h:343
Querying information about the upper part of a tile with halftile foundation.
Foundation
Enumeration for Foundations.
Definition: slope_type.h:95
SpriteID ground
ground sprite for a 3-way switch
Definition: rail.h:127
static bool IsTileType(TileIndex tile, TileType type)
Checks if a tile is a given tiletype.
Definition: tile_map.h:152
All the railtype-specific information is stored here.
All possible tracks.
Definition: track_type.h:56
void MakeDefaultName(T *obj)
Set the default name for a depot/waypoint.
Definition: town.h:229
Iterator to iterate over a diagonal area of the map.
TileIndex tile
Tile index.
Definition: tile_cmd.h:48
static uint ApplyPixelFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.h:131
Track along the y-axis (north-west to south-east)
Definition: track_type.h:24
CommandCost DoCommand(const CommandContainer *container, DoCommandFlag flags)
Shorthand for calling the long DoCommand with a container.
Definition: command.cpp:440
The y axis.
uint Length() const
Get the number of items in the list.
static Owner GetRoadOwner(TileIndex t, RoadType rt)
Get the owner of a specific road type.
Definition: road_map.h:199
The tile is leveled up to a flat slope.
Definition: slope_type.h:97
byte train_signal_side
show signals on left / driving / right side
Track upper, direction west.
Definition: track_type.h:117
Level north halftile non-continuously.
Definition: slope_type.h:107
Track lower, direction west.
Definition: track_type.h:118
static bool IsValidTrack(Track track)
Checks if a Track is valid.
Definition: track_func.h:38
static bool IsRailStationTile(TileIndex t)
Is this tile a station tile and a rail station?
Definition: station_map.h:103
Header file for things common for tunnels and bridges.
X-axis track.
Definition: track_type.h:43
Ground palette sprite of a tile, together with its sprite layout.
Definition: sprite.h:60
#define FIND_FIRST_BIT(x)
Returns the first non-zero bit in a 6-bit value (from right).
Corner height_ref
Corner to use height offset from.
Definition: rail_cmd.cpp:1920
void DirtyCompanyInfrastructureWindows(CompanyID company)
Redraw all windows with company infrastructure counts.
FloodingBehaviour GetFloodingBehaviour(TileIndex tile)
Returns the behaviour of a tile during flooding.
Definition: water_cmd.cpp:1005
byte road_side
the side of the road vehicles drive on
Images for overlaying track.
Definition: rail.h:43
static TownID GetTownIndex(TileIndex t)
Get the index of which town this house/street is attached to.
Definition: town_map.h:24
Slope SE, Track Y, Fence SW.
Definition: rail.h:107
Entry point for OpenTTD to YAPF&#39;s cache.
CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Convert one rail type to the other.
Definition: rail_cmd.cpp:1554
StringID GetErrorMessage() const
Returns the error message of a command.
Definition: command_type.h:142
bool IsType(OrderType type) const
Check whether this order is of the given type.
Definition: order_base.h:63
Grass with a fence at the NW edge.
Definition: rail_map.h:489
CommandCost TunnelBridgeIsFree(TileIndex tile, TileIndex endtile, const Vehicle *ignore)
Finds vehicle in tunnel / bridge.
Definition: vehicle.cpp:568
static Owner GetTileOwner(TileIndex tile)
Returns the owner of a tile.
Definition: tile_map.h:180
Slope FLAT, Track UPPER, Fence S.
Definition: rail.h:97
static DiagDirection GetRailDepotDirection(TileIndex t)
Returns the direction the depot is facing to.
Definition: rail_map.h:172
struct RailtypeInfo::@37 base_sprites
Struct containing the main sprites.
static DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Track in the right corner of the tile (east)
Definition: track_type.h:28
DoCommandFlag
List of flags for a command.
Definition: command_type.h:343
static uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
Calculates the length of a tunnel or a bridge (without end tiles)
Definition: tunnelbridge.h:26
Southeast.
Southwest.
T * Next() const
Get next vehicle in the chain.
Piece of rail on slope with south-west raised.
Definition: rail.h:70
The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/...
Definition: tile_cmd.h:38
ClientSettings _settings_client
The current settings for this game.
Definition: settings.cpp:76
Piece of rail in X direction.
Definition: rail.h:62
bool IsSafeWaitingPosition(const Train *v, TileIndex tile, Trackdir trackdir, bool include_line_end, bool forbid_90deg)
Determine whether a certain track on a tile is a safe position to end a path.
Definition: pbs.cpp:383
static const uint32 VALID_LEVEL_CROSSING_SLOPES
Constant bitset with safe slopes for building a level crossing.
Definition: slope_type.h:88
bool Succeeded() const
Did this command succeed?
Definition: command_type.h:152
"Arrow" to the north-east
Definition: track_type.h:52
Definition of base types and functions in a cross-platform compatible way.
CommandCost CmdRemoveSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Remove signals.
Definition: rail_cmd.cpp:1451
Represents a diagonal tile area.
Definition: tilearea_type.h:64
static TrackBits GetRailReservationTrackBits(TileIndex t)
Returns the reserved track bits of the tile.
Definition: rail_map.h:195
static CommandCost CmdRailTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build or remove a stretch of railroad tracks.
Definition: rail_cmd.cpp:868
Map accessors for object tiles.
static const uint BB_HEIGHT_UNDER_BRIDGE
Some values for constructing bounding boxes (BB).
Definition: viewport_type.h:74
A number of safeguards to prevent using unsafe methods.
SpriteID build_ns_rail
button for building single rail in N-S direction
Definition: rail.h:144
Trams.
Definition: road_type.h:25
int16 x
The x value of the coordinate.
Definition: map_type.h:60
Track in the lower corner of the tile (south)
Definition: track_type.h:26
static PaletteID GroundSpritePaletteTransform(SpriteID image, PaletteID pal, PaletteID default_pal)
Applies PALETTE_MODIFIER_COLOUR to a palette entry of a ground sprite.
Definition: sprite.h:170
RailTypes introduces_railtypes
Bitmask of which other railtypes are introduced when this railtype is introduced. ...
Definition: rail.h:257
The vehicle cannot enter the tile.
Definition: tile_cmd.h:39
Water tile.
Definition: tile_type.h:49
static Trackdir RemoveFirstTrackdir(TrackdirBits *trackdirs)
Removes first Trackdir from TrackdirBits and returns it.
Definition: track_func.h:166
uint y
Y position of the tile in unit coordinates.
Definition: tile_cmd.h:46
Foundation GetRailFoundation(Slope tileh, TrackBits bits)
Checks if a track combination is valid on a specific slope and returns the needed foundation...
Definition: rail_cmd.cpp:332
RoadBits
Enumeration for the road parts on a tile.
Definition: road_type.h:55
Trackdir
Enumeration for tracks and directions.
Definition: track_type.h:74
byte sorting_order
The sorting order of this railtype for the toolbar dropdown.
Definition: rail.h:262
void ShowDepotWindow(TileIndex tile, VehicleType type)
Opens a depot window.
Definition: depot_gui.cpp:1100
Used for iterations.
Slope SW, Track X, Fence NW.
Definition: rail.h:98
The tile has an along Y-axis inclined foundation.
Definition: slope_type.h:99
static Slope GetTilePixelSlope(TileIndex tile, int *h)
Return the slope of a given tile.
Definition: tile_map.h:282
Grass with a fence at the NE edge.
Definition: rail_map.h:492
static const uint TILE_HEIGHT
Height of a height level in world coordinate AND in pixels in #ZOOM_LVL_BASE.
Definition: tile_type.h:18
Train * GetTrainForReservation(TileIndex tile, Track track)
Find the train which has reserved a specific path.
Definition: pbs.cpp:333
No road-part is build.
Definition: road_type.h:56
static bool IsSlopeWithOneCornerRaised(Slope s)
Tests if a specific slope has exactly one corner raised.
Definition: slope_func.h:90
Represents the covered area of e.g.
Definition: tilearea_type.h:18
GUI Functions related to companies.
static const uint TUNNELBRIDGE_TRACKBIT_FACTOR
Multiplier for how many regular track bits a tunnel/bridge counts.
Definition: economy_type.h:214
PBS support routines.
static void SetSignalStates(TileIndex tile, uint state)
Set the states of the signals (Along/AgainstTrackDir)
Definition: rail_map.h:353
uint16 max_speed
Maximum speed for vehicles travelling on this rail type.
Definition: rail.h:222
void FindVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc)
Find a vehicle from a specific location.
Definition: vehicle.cpp:498
SpriteID single_w
single piece of rail in the western corner
Definition: rail.h:133
TileIndex tile
Current tile index.
Definition: vehicle_base.h:230
SpriteID GetCustomSignalSprite(const RailtypeInfo *rti, TileIndex tile, SignalType type, SignalVariant var, SignalState state, bool gui)
Get the sprite to draw for a given signal.
CommandCost CheckOwnership(Owner owner, TileIndex tile)
Check whether the current owner owns something.
static const ObjectType OBJECT_OWNED_LAND
Owned land &#39;flag&#39;.
Definition: object_type.h:21
CursorID rail_nwse
Cursor for building rail in Y direction.
Definition: rail.h:159
static void SetPresentSignals(TileIndex tile, uint signals)
Set whether the given signals are present (Along/AgainstTrackDir)
Definition: rail_map.h:384
Grass with a fence and shore or water on the free halftile.
Definition: rail_map.h:500
Base class for tile iterators.
Definition: tilearea_type.h:99
static Slope SlopeWithThreeCornersRaised(Corner corner)
Returns the slope with all except one corner raised.
Definition: slope_func.h:208
Northwest.
void MarkTileDirtyByTile(TileIndex tile, int bridge_level_offset, int tile_height_override)
Mark a tile given by its index dirty for repaint.
Definition: viewport.cpp:1785
Sprites to use and how to display them for train depot tiles.
Crossing of X and Y rail, with ballast.
Definition: rail.h:72
SpriteID single_x
single piece of rail in X direction, without ground
Definition: rail.h:128
SpriteID convert_rail
button for converting rail
Definition: rail.h:151
static Track GetRailDepotTrack(TileIndex t)
Returns the track of a depot, ignoring direction.
Definition: rail_map.h:183
DiagDirection
Enumeration for diagonal directions.
static Money RailClearCost(RailType railtype)
Returns the &#39;cost&#39; of clearing the specified railtype.
Definition: rail.h:357
#define lengthof(x)
Return the length of an fixed size array.
Definition: depend.cpp:42
bit mask containing all &#39;simple&#39; slopes
Definition: slope_type.h:63
static void DrawTrackFence_NE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
Draw fence at NE border matching the tile slope.
Definition: rail_cmd.cpp:1991
Depot images.
Definition: rail.h:50
static TrackdirBits TrackdirReachesTrackdirs(Trackdir trackdir)
Maps a trackdir to the trackdirs that can be reached from it (ie, when entering the next tile...
Definition: track_func.h:594
static T min(const T a, const T b)
Returns the minimum of two values.
Definition: math_func.hpp:42
static Foundation FlatteningFoundation(Slope s)
Returns the foundation needed to flatten a slope.
Definition: slope_func.h:371
static void DrawRailTileSeq(const struct TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 total_offset, uint32 newgrf_offset, PaletteID default_palette)
Draw tile sprite sequence on tile with railroad specifics.
Definition: sprite.h:91
StringID railtype
Type of rail on the tile.
Definition: tile_cmd.h:65
RailTypeLabel label
Unique 32 bit rail type identifier.
Definition: rail.h:227
The tile has a steep slope. The lowest corner is raised by a foundation and the upper halftile is lev...
Definition: slope_type.h:103
CommandCost CmdBuildTrainDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build a train depot.
Definition: rail_cmd.cpp:964
RailTypes
The different railtypes we support, but then a bitmask of them.
Definition: rail_type.h:53
All flags cleared.
Definition: rail.h:31
Piece of rail in Y direction.
Definition: rail.h:63
static CommandCost CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile)
Tests if a track can be build on a tile.
Definition: rail_cmd.cpp:412
Functions related to autoslope.
Functions related to sound.
static DiagDirection GetTunnelBridgeDirection(TileIndex t)
Get the direction pointing to the other end.
static bool IsPlainRailTile(TileIndex t)
Checks whether the tile is a rail tile or rail tile with signals.
Definition: rail_map.h:61
uint32 StringID
Numeric value that represents a string, independent of the selected language.
Definition: strings_type.h:18
static bool AutoslopeEnabled()
Tests if autoslope is enabled for _current_company.
Definition: autoslope.h:46
static TrackStatus CombineTrackStatus(TrackdirBits trackdirbits, TrackdirBits red_signals)
Builds a TrackStatus.
Definition: track_func.h:398
bool build_on_slopes
allow building on slopes
bool Failed() const
Did this command fail?
Definition: command_type.h:161
Piece of rail on slope with south-east raised.
Definition: rail.h:69
Slope FLAT, Track X, Fence SE.
Definition: rail.h:102
SpriteID single_n
single piece of rail in the northern corner
Definition: rail.h:130
void UpdateLevelCrossing(TileIndex tile, bool sound=true)
Sets correct crossing state.
Definition: train_cmd.cpp:1679
Piece of rail in eastern corner.
Definition: rail.h:66
RoadTypes
The different roadtypes we support, but then a bitmask of them.
Definition: road_type.h:36
east and west corner are raised
Definition: slope_type.h:61
void AddSortableSpriteToDraw(SpriteID image, PaletteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
Draw a (transparent) sprite at given coordinates with a given bounding box.
Definition: viewport.cpp:654
static Trackdir ReverseTrackdir(Trackdir trackdir)
Maps a trackdir to the reverse trackdir.
Definition: track_func.h:257
build a signal
Definition: command_type.h:186
static Slope RemoveHalftileSlope(Slope s)
Removes a halftile slope from a slope.
Definition: slope_func.h:62
#define return_cmd_error(errcode)
Returns from a function with a specific StringID as error.
Definition: command_func.h:35
TrackStatus GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
Returns information about trackdirs and signal states.
Definition: landscape.cpp:591
SpriteID single_s
single piece of rail in the southern corner
Definition: rail.h:131
Piece of rail in northern corner.
Definition: rail.h:64
Ship vehicle type.
Definition: vehicle_type.h:28
static bool HasSignals(TileIndex t)
Checks if a rail tile has signals.
Definition: rail_map.h:73
Slope NE, Track X, Fence NW.
Definition: rail.h:100
SpriteID build_depot
button for building depots
Definition: rail.h:149
&#39;Train&#39; is either a loco or a wagon.
Definition: train.h:88
CursorID depot
Cursor for building a depot.
Definition: rail.h:161
static Vehicle * EnsureNoShipProc(Vehicle *v, void *data)
Test-procedure for HasVehicleOnPos to check for a ship.
Definition: rail_cmd.cpp:3020
CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Remove a single piece of track.
Definition: rail_cmd.cpp:610
static RailTileType GetRailTileType(TileIndex t)
Returns the RailTileType (normal with or without signals, waypoint or depot).
Definition: rail_map.h:37
static RoadBits GetCrossingRoadBits(TileIndex tile)
Get the road bits of a level crossing.
Definition: road_map.h:318
convert a rail type
Definition: command_type.h:193
A pair-construct of a TileIndexDiff.
Definition: map_type.h:59
static TrackBits GetTrackBits(TileIndex tile)
Gets the track bits of the given tile.
Definition: rail_map.h:137
Bit number for hiding from selection.
Definition: rail.h:29
CompanyInfrastructure infrastructure
NOSAVE: Counts of company owned infrastructure.
Definition: company_base.h:130
The X axis.
uint32 rail[RAILTYPE_END]
Count of company owned track bits for each rail type.
Definition: company_base.h:34
Construction costs.
Definition: economy_type.h:151
CursorID convert
Cursor for converting track.
Definition: rail.h:163
static Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
X-Y-axis cross.
Definition: track_type.h:49
static TileIndexDiff ToTileIndexDiff(TileIndexDiffC tidc)
Return the offset between to tiles from a TileIndexDiffC struct.
Definition: map_func.h:232
static TileIndex GetOtherTunnelBridgeEnd(TileIndex t)
Determines type of the wormhole and returns its other end.
Transport by train.
execute the given command
Definition: command_type.h:345
static TrackBits TrackToTrackBits(Track track)
Maps a Track to the corresponding TrackBits value.
Definition: track_func.h:87
static CommandCost EnsureNoTrainOnTrack(TileIndex tile, Track track)
Tests if a vehicle interacts with the specified track.
Definition: rail_cmd.cpp:240
static int GetSlopePixelZInCorner(Slope tileh, Corner corner)
Determine the Z height of a corner relative to TileZ.
Definition: landscape.h:55
static byte SignalAgainstTrackdir(Trackdir trackdir)
Maps a trackdir to the bit that stores its status in the map arrays, in the direction against the tra...
Definition: signal_func.h:34
PalSpriteID ground
Palette and sprite for the ground.
Definition: sprite.h:61
static T KillFirstBit(T value)
Clear the first bit in an integer.
static uint MapSize()
Get the size of the map.
Definition: map_func.h:94
static bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
Find out if the slope of the tile is suitable to build a depot of given direction.
Definition: depot_func.h:28
Flag for an invalid track.
Definition: track_type.h:30
static T ClrBit(T &x, const uint8 y)
Clears a bit in a variable.
static bool IsSlopeWithThreeCornersRaised(Slope s)
Tests if a specific slope has exactly three corners raised.
Definition: slope_func.h:197
Trackdir GetVehicleTrackdir() const
Get the tracks of the train vehicle.
Definition: train_cmd.cpp:4012
static bool IsRailDepot(TileIndex t)
Is this rail tile a rail depot?
Definition: rail_map.h:96
bool IsStationTileBlocked(TileIndex tile)
Check whether a rail station tile is NOT traversable.
GUISettings gui
settings related to the GUI
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:52
static Track RemoveFirstTrack(TrackBits *tracks)
Removes first Track from TrackBits and returns it.
Definition: track_func.h:141
Lower track.
Definition: track_type.h:46
static bool IsRailDepotTile(TileIndex t)
Is this tile rail tile and a rail depot?
Definition: rail_map.h:106
Electric rails.
Definition: rail_type.h:32
static Vehicle * UpdateTrainPowerProc(Vehicle *v, void *data)
Update power of train under which is the railtype being converted.
Definition: rail_cmd.cpp:1532
Upper track.
Definition: track_type.h:45
static bool HasTunnelBridgeReservation(TileIndex t)
Get the reservation state of the rail tunnel/bridge.
uint32 SpriteID
The number of a sprite, without mapping bits and colourtables.
Definition: gfx_type.h:19
CursorID rail_swne
Cursor for building rail in X direction.
Definition: rail.h:157
Track x-axis, direction south-west.
Definition: track_type.h:115
Slope FLAT, Track RIGHT, Fence W.
Definition: rail.h:104
CompanyByte _current_company
Company currently doing an action.
Definition: company_cmd.cpp:47
Upper and lower track.
Definition: track_type.h:50
Set of callback functions for performing tile operations of a given tile type.
Definition: tile_cmd.h:144
uint32 TileIndex
The index/ID of a Tile.
Definition: tile_type.h:80
static const PaletteID PALETTE_CRASH
Recolour sprite greying of crashed vehicles.
Definition: sprites.h:1580
Bitflag for a depot.
Definition: track_type.h:59
static byte SignalAlongTrackdir(Trackdir trackdir)
Maps a trackdir to the bit that stores its status in the map arrays, in the direction along with the ...
Definition: signal_func.h:24
static const PaletteID PALETTE_TO_BARE_LAND
sets colour to bare land stuff for rail, road and crossings
Definition: sprites.h:1568
int x_offs
Bounding box X offset.
Definition: rail_cmd.cpp:1921
Track y-axis, direction north-west.
Definition: track_type.h:116
static bool IsLevelCrossingTile(TileIndex t)
Return whether a tile is a level crossing tile.
Definition: road_map.h:78
north and west corner are raised
Definition: slope_type.h:57
static Money RailBuildCost(RailType railtype)
Returns the cost of building the specified railtype.
Definition: rail.h:346
static void MakeRoadCrossing(TileIndex t, Owner road, Owner tram, Owner rail, Axis roaddir, RailType rat, RoadTypes rot, uint town)
Make a level crossing.
Definition: road_map.h:578
Cursor and toolbar icon images.
Definition: rail.h:42
static void DrawTrackFence_SW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
Draw fence at SW border matching the tile slope.
Definition: rail_cmd.cpp:2001
static uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:217
Bit sets of the above specified bits.
Definition: tile_cmd.h:36
static Trackdir TrackToTrackdir(Track track)
Returns a Trackdir for the given Track.
Definition: track_func.h:289
void CDECL error(const char *s,...)
Error handling for fatal non-user errors.
Definition: openttd.cpp:112
int TicksToLeaveDepot(const Train *v)
Compute number of ticks when next wagon will leave a depot.
Definition: rail_cmd.cpp:2900
Old-fashioned semaphore signal.
Definition: signal_type.h:20
static T abs(const T a)
Returns the absolute value of (scalar) variable.
Definition: math_func.hpp:83
The tile has no foundation, the slope remains unchanged.
Definition: slope_type.h:96
TrackBits GetReservedTrackbits(TileIndex t)
Get the reserved trackbits for any tile, regardless of type.
Definition: pbs.cpp:26
void FreeTrainTrackReservation(const Train *v)
Free the reserved path in front of a vehicle.
Definition: train_cmd.cpp:2236
The tile has an along X-axis inclined foundation.
Definition: slope_type.h:98
TransportType
Available types of transport.
static uint GB(const T x, const uint8 s, const uint8 n)
Fetch n bits from x, started at bit s.
Used inside "rail_cmd.cpp" to indicate invalid slope/track combination.
Definition: slope_type.h:115
int x_size
Bounding box X size.
Definition: rail_cmd.cpp:1923
static bool IsDiagonalTrackdir(Trackdir trackdir)
Checks if a given Trackdir is diagonal.
Definition: track_func.h:641
Slope
Enumeration for the slope-type.
Definition: slope_type.h:50
int y_size
Bounding box Y size.
Definition: rail_cmd.cpp:1924
A tile of a station.
Definition: tile_type.h:48
SpriteID build_tunnel
button for building a tunnel
Definition: rail.h:150
void DrawRailCatenary(const TileInfo *ti)
Draws overhead wires and pylons for electric railways.
Definition: elrail.cpp:564
Ballast for junction &#39;pointing&#39; SE.
Definition: rail.h:75
static bool HasTrack(TileIndex tile, Track track)
Returns whether the given track is present on the given tile.
Definition: rail_map.h:161
bool Include(const T &item)
Tests whether a item is present in the vector, and appends it to the end if not.
Normal rail tile without signals.
Definition: rail_map.h:25
Ballast for junction &#39;pointing&#39; SW.
Definition: rail.h:73
bool show_track_reservation
highlight reserved tracks.
Used to only draw a part of the sprite.
Definition: gfx_type.h:219
Main group of ground images.
Definition: rail.h:44
Slope SE, Track Y, Fence NE.
Definition: rail.h:99
static bool CanAllocateItem(size_t n=1)
Helper functions so we can use PoolItem::Function() instead of _poolitem_pool.Function() ...
Definition: pool_type.hpp:216
SignalOffsets
Enum holding the signal offset in the sprite sheet according to the side it is representing.
Definition: rail_cmd.cpp:52
static bool IsCompatibleRail(RailType enginetype, RailType tiletype)
Checks if an engine of the given RailType can drive on a tile with a given RailType.
Definition: rail.h:313
RailTypes powered_railtypes
bitmask to the OTHER railtypes on which an engine of THIS railtype generates power ...
Definition: rail.h:179
uint GetRailtypeSpriteOffset() const
Offset between the current railtype and normal rail.
Definition: rail.h:286
Vehicle is not visible.
Definition: vehicle_base.h:32
static uint CountBits(T value)
Counts the number of set bits in a variable.
TrackdirBits
Enumeration of bitmasks for the TrackDirs.
Definition: track_type.h:106
The signal is red.
Definition: signal_type.h:47
Functions related to commands.
Coordinates of a point in 2D.
remove a single rail track
Definition: command_type.h:181
Iterator to iterate over a tile area (rectangle) of the map.
void DrawGroundSprite(SpriteID image, PaletteID pal, const SubSprite *sub, int extra_offs_x, int extra_offs_y)
Draws a ground sprite for the current tile.
Definition: viewport.cpp:570
byte GetSnowLine()
Get the current snow line, either variable or static.
Definition: landscape.cpp:646
static bool IsValidID(size_t index)
Tests whether given index can be used to get valid (non-NULL) Titem.
Definition: pool_type.hpp:235
static bool HasRailCatenaryDrawn(RailType rt)
Test if we should draw rail catenary.
Definition: elrail_func.h:32
Date build_date
Date of construction of tile contents.
Definition: tile_cmd.h:57
SmallVector< RailTypeLabel, 4 > RailTypeLabelList
List of rail type labels.
Definition: rail.h:113
"Arrow" to the south-east
Definition: track_type.h:53
uint8 train_acceleration_model
realistic acceleration for trains
header file for electrified rail specific functions
Slope SW, Track X, Fence SE.
Definition: rail.h:106
The tile has a steep slope. The lowest corner is raised by a foundation to allow building railroad on...
Definition: slope_type.h:100
RailGroundType
The ground &#39;under&#39; the rail.
Definition: rail_map.h:486
struct RailtypeInfo::@38 gui_sprites
struct containing the sprites for the rail GUI.
static void MakeRoadNormal(TileIndex t, RoadBits bits, RoadTypes rot, TownID town, Owner road, Owner tram)
Make a normal road tile.
Definition: road_map.h:554
static uint SlopeToSpriteOffset(Slope s)
Returns the Sprite offset for a given Slope.
Definition: slope_func.h:417
ConstructionSettings construction
construction of things in-game
static const StringID INVALID_STRING_ID
Constant representing an invalid string (16bit in case it is used in savegames)
Definition: strings_type.h:19
Functions that have tunnels and bridges in common.
static DisallowedRoadDirections GetDisallowedRoadDirections(TileIndex t)
Gets the disallowed directions.
Definition: road_map.h:271
static RoadTypes GetRoadTypes(TileIndex t)
Get the present road types of a tile.
Definition: road_map.h:166
static bool IsNormalRoad(TileIndex t)
Return whether a tile is a normal road.
Definition: road_map.h:47
int GetSlopeZInCorner(Slope tileh, Corner corner)
Determine the Z height of a corner relative to TileZ.
Definition: landscape.cpp:377
static bool AutoslopeCheckForEntranceEdge(TileIndex tile, int z_new, Slope tileh_new, DiagDirection entrance)
Autoslope check for tiles with an entrance on an edge.
Definition: autoslope.h:33
StringID name
Name of this rail type.
Definition: rail.h:167
Grass with a fence at the SE edge.
Definition: rail_map.h:490
remove a signal
Definition: command_type.h:187
don&#39;t allow overlap of rails (used in buildrail)
Definition: command_type.h:349
StringID str
Description of the tile.
Definition: tile_cmd.h:54
SpriteID tunnel
tunnel sprites base
Definition: rail.h:136
CursorID rail_ns
Cursor for building rail in N-S direction.
Definition: rail.h:156
Slope NE, Track X, Fence SE.
Definition: rail.h:108
int32 x_pos
x coordinate.
Definition: vehicle_base.h:268
Track y-axis, direction south-east.
Definition: track_type.h:109
static bool HasReservedTracks(TileIndex tile, TrackBits tracks)
Check whether some of tracks is reserved on a tile.
Definition: pbs.h:60
static bool HasBit(const T x, const uint8 y)
Checks if a bit in a value is set.
static void DrawTrackBits(TileInfo *ti, TrackBits track)
Draw ground sprite and track bits.
Definition: rail_cmd.cpp:2227
void Restore()
Restore the variable.
static TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
Converts TrackBits to TrackdirBits while allowing both directions.
Definition: track_func.h:329
Light signal.
Definition: signal_type.h:19
Track left, direction south.
Definition: track_type.h:112
static const TileIndex INVALID_TILE
The very nice invalid tile marker.
Definition: tile_type.h:85
Base of the town class.
Used for iterations.
Definition: rail_type.h:30
SpriteID track_ns
two pieces of rail in North and South corner (East-West direction)
Definition: rail.h:126
GameCreationSettings game_creation
settings used during the creation of a game (map)
No track build.
Definition: track_type.h:107
static bool IsPlainRail(TileIndex t)
Returns whether this is plain rails, with or without signals.
Definition: rail_map.h:50
Track left, direction north.
Definition: track_type.h:119
A house by a town.
Definition: tile_type.h:46
Full road along the y-axis (north-west + south-east)
Definition: road_type.h:62
static Track GetCrossingRailTrack(TileIndex tile)
Get the rail track of a level crossing.
Definition: road_map.h:328
int32 y_pos
y coordinate.
Definition: vehicle_base.h:269
Ballast for full junction.
Definition: rail.h:77
Left track.
Definition: track_type.h:47
Slope FLAT, Track X, Fence NW.
Definition: rail.h:94
Flag for invalid railtype.
Definition: rail_type.h:36
static bool IsInvisibilitySet(TransparencyOption to)
Check if the invisibility option bit is set and if we aren&#39;t in the game menu (there&#39;s never transpar...
Definition: transparency.h:61
static TrackBits TrackdirBitsToTrackBits(TrackdirBits bits)
Discards all directional information from a TrackdirBits value.
Definition: track_func.h:318
static bool HasDepotReservation(TileIndex t)
Get the reservation state of the depot.
Definition: rail_map.h:259
Owner
Enum for all companies/owners.
Definition: company_type.h:20
Flag for an invalid trackdir.
Definition: track_type.h:93
static CommandCost CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags)
Check that the new track bits may be built.
Definition: rail_cmd.cpp:253
Track along the x-axis (north-east to south-west)
Definition: track_type.h:23
Functions related to water (management)
static bool IsNonContinuousFoundation(Foundation f)
Tests if a foundation is a non-continuous foundation, i.e.
Definition: slope_func.h:322
SpriteID build_x_rail
button for building single rail in X direction
Definition: rail.h:145
VehicleEnterTileStatus
The returned bits of VehicleEnterTile.
Definition: tile_cmd.h:22
Grass with a fence at the southern side.
Definition: rail_map.h:497
static TileIndex AddTileIndexDiffCWrap(TileIndex tile, TileIndexDiffC diff)
Add a TileIndexDiffC to a TileIndex and returns the new one.
Definition: map_func.h:302
static void SetTrackReservation(TileIndex t, TrackBits b)
Sets the reserved track bits of the tile.
Definition: rail_map.h:210
SpriteID sprite
The &#39;real&#39; sprite.
Definition: gfx_type.h:25
Slope NW, Track Y, Fence SW.
Definition: rail.h:109
Track lower, direction east.
Definition: track_type.h:111
SignalVariant
Variant of the signal, i.e.
Definition: signal_type.h:18
CommandCost CmdBuildRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build rail on a stretch of track.
Definition: rail_cmd.cpp:928
Date _date
Current date in days (day counter)
Definition: date.cpp:28
bool TryPathReserve(Train *v, bool mark_as_stuck=false, bool first_tile_okay=false)
Try to reserve a path to a safe position.
Definition: train_cmd.cpp:2674
static void QSortT(T *base, uint num, int(CDECL *comparator)(const T *, const T *), bool desc=false)
Type safe qsort()
Definition: sort_func.hpp:28
static Direction ReverseDir(Direction d)
Return the reverse of a direction.
normal signal
Definition: signal_type.h:26
SpriteID build_ew_rail
button for building single rail in E-W direction
Definition: rail.h:146
Track in the upper corner of the tile (north)
Definition: track_type.h:25
the south corner of the tile is raised
Definition: slope_type.h:53
The tile/execution is done by "water".
Definition: company_type.h:28
void DeleteNewGRFInspectWindow(GrfSpecFeature feature, uint index)
Delete inspect window for a given feature and index.
VehicleTypeByte type
Type of vehicle.
Definition: vehicle_type.h:56
static bool IsSpecialRailFoundation(Foundation f)
Tests if a foundation is a special rail foundation for single horizontal/vertical track...
Definition: slope_func.h:347
Valid changes while vehicle is driving, and possibly changing tracks.
Definition: train.h:51
static TrackdirBits TrackStatusToTrackdirBits(TrackStatus ts)
Returns the present-trackdir-information of a TrackStatus.
Definition: track_func.h:362
void DrawBridgeMiddle(const TileInfo *ti)
Draw the middle bits of a bridge.
Class for backupping variables and making sure they are restored later.
No track.
Definition: track_type.h:42
void DrawSprite(SpriteID img, PaletteID pal, int x, int y, const SubSprite *sub, ZoomLevel zoom)
Draw a sprite, not in a viewport.
Definition: gfx.cpp:834
static RailType GetRailType(TileIndex t)
Gets the rail type of the given tile.
Definition: rail_map.h:116
static Corner OppositeCorner(Corner corner)
Returns the opposite corner.
Definition: slope_func.h:186
static bool TracksOverlap(TrackBits bits)
Checks if the given tracks overlap, ie form a crossing.
Definition: track_func.h:655
Order current_order
The current order (+ status, like: loading)
Definition: vehicle_base.h:318
static bool IsBridge(TileIndex t)
Checks if this is a bridge, instead of a tunnel.
Definition: bridge_map.h:24
static Direction DiagDirToDir(DiagDirection dir)
Convert a DiagDirection to a Direction.
Y-axis track.
Definition: track_type.h:44
Grass with a fence at the western side.
Definition: rail_map.h:496
An invalid owner.
Definition: company_type.h:31
void InvalidateWindowData(WindowClass cls, WindowNumber number, int data, bool gui_scope)
Mark window data of the window of a given class and specific window number as invalid (in need of re-...
Definition: window.cpp:3301
The signal is green.
Definition: signal_type.h:48
Slope FLAT, Track Y, Fence SW.
Definition: rail.h:103
SpriteID snow_offset
sprite number difference between a piece of track on a snowy ground and the corresponding one on norm...
Definition: rail.h:176
static void SetRailType(TileIndex t, RailType r)
Sets the rail type of the given tile.
Definition: rail_map.h:126
static int GetTileMaxPixelZ(TileIndex tile)
Get top height of the tile.
Definition: tile_map.h:306
Train vehicle type.
Definition: vehicle_type.h:26