OpenTTD
rail_cmd.cpp
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1 /* $Id: rail_cmd.cpp 27893 2017-08-13 18:38:42Z frosch $ */
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 
52  SIGNAL_TO_SOUTHWEST,
53  SIGNAL_TO_NORTHEAST,
54  SIGNAL_TO_SOUTHEAST,
55  SIGNAL_TO_NORTHWEST,
56  SIGNAL_TO_EAST,
57  SIGNAL_TO_WEST,
58  SIGNAL_TO_SOUTH,
59  SIGNAL_TO_NORTH,
60 };
61 
66 {
67  assert_compile(lengthof(_original_railtypes) <= lengthof(_railtypes));
68 
69  uint i = 0;
70  for (; i < lengthof(_original_railtypes); i++) _railtypes[i] = _original_railtypes[i];
71 
72  static const RailtypeInfo empty_railtype = {
73  {0,0,0,0,0,0,0,0,0,0,0,0},
74  {0,0,0,0,0,0,0,0,{}},
75  {0,0,0,0,0,0,0,0},
76  {0,0,0,0,0,0},
77  0, RAILTYPES_NONE, RAILTYPES_NONE, 0, 0, 0, RTFB_NONE, 0, 0, 0, 0, 0,
79  {}, {} };
80  for (; i < lengthof(_railtypes); i++) _railtypes[i] = empty_railtype;
81 }
82 
83 void ResolveRailTypeGUISprites(RailtypeInfo *rti)
84 {
86  if (cursors_base != 0) {
87  rti->gui_sprites.build_ns_rail = cursors_base + 0;
88  rti->gui_sprites.build_x_rail = cursors_base + 1;
89  rti->gui_sprites.build_ew_rail = cursors_base + 2;
90  rti->gui_sprites.build_y_rail = cursors_base + 3;
91  rti->gui_sprites.auto_rail = cursors_base + 4;
92  rti->gui_sprites.build_depot = cursors_base + 5;
93  rti->gui_sprites.build_tunnel = cursors_base + 6;
94  rti->gui_sprites.convert_rail = cursors_base + 7;
95  rti->cursor.rail_ns = cursors_base + 8;
96  rti->cursor.rail_swne = cursors_base + 9;
97  rti->cursor.rail_ew = cursors_base + 10;
98  rti->cursor.rail_nwse = cursors_base + 11;
99  rti->cursor.autorail = cursors_base + 12;
100  rti->cursor.depot = cursors_base + 13;
101  rti->cursor.tunnel = cursors_base + 14;
102  rti->cursor.convert = cursors_base + 15;
103  }
104 
105  /* Array of default GUI signal sprite numbers. */
106  const SpriteID _signal_lookup[2][SIGTYPE_END] = {
107  {SPR_IMG_SIGNAL_ELECTRIC_NORM, SPR_IMG_SIGNAL_ELECTRIC_ENTRY, SPR_IMG_SIGNAL_ELECTRIC_EXIT,
108  SPR_IMG_SIGNAL_ELECTRIC_COMBO, SPR_IMG_SIGNAL_ELECTRIC_PBS, SPR_IMG_SIGNAL_ELECTRIC_PBS_OWAY},
109 
110  {SPR_IMG_SIGNAL_SEMAPHORE_NORM, SPR_IMG_SIGNAL_SEMAPHORE_ENTRY, SPR_IMG_SIGNAL_SEMAPHORE_EXIT,
111  SPR_IMG_SIGNAL_SEMAPHORE_COMBO, SPR_IMG_SIGNAL_SEMAPHORE_PBS, SPR_IMG_SIGNAL_SEMAPHORE_PBS_OWAY},
112  };
113 
114  for (SignalType type = SIGTYPE_NORMAL; type < SIGTYPE_END; type = (SignalType)(type + 1)) {
115  for (SignalVariant var = SIG_ELECTRIC; var <= SIG_SEMAPHORE; var = (SignalVariant)(var + 1)) {
116  SpriteID red = GetCustomSignalSprite(rti, INVALID_TILE, type, var, SIGNAL_STATE_RED, true);
117  SpriteID green = GetCustomSignalSprite(rti, INVALID_TILE, type, var, SIGNAL_STATE_GREEN, true);
118  rti->gui_sprites.signals[type][var][0] = (red != 0) ? red + SIGNAL_TO_SOUTH : _signal_lookup[var][type];
119  rti->gui_sprites.signals[type][var][1] = (green != 0) ? green + SIGNAL_TO_SOUTH : _signal_lookup[var][type] + 1;
120  }
121  }
122 }
123 
130 static int CDECL CompareRailTypes(const RailType *first, const RailType *second)
131 {
132  return GetRailTypeInfo(*first)->sorting_order - GetRailTypeInfo(*second)->sorting_order;
133 }
134 
139 {
140  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
141  RailtypeInfo *rti = &_railtypes[rt];
142  ResolveRailTypeGUISprites(rti);
143  }
144 
145  _sorted_railtypes_size = 0;
146  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
147  if (_railtypes[rt].label != 0) {
148  _sorted_railtypes[_sorted_railtypes_size++] = rt;
149  }
150  }
151  QSortT(_sorted_railtypes, _sorted_railtypes_size, CompareRailTypes);
152 }
153 
157 RailType AllocateRailType(RailTypeLabel label)
158 {
159  for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
160  RailtypeInfo *rti = &_railtypes[rt];
161 
162  if (rti->label == 0) {
163  /* Set up new rail type */
165  rti->label = label;
166  rti->alternate_labels.Clear();
167 
168  /* Make us compatible with ourself. */
169  rti->powered_railtypes = (RailTypes)(1 << rt);
170  rti->compatible_railtypes = (RailTypes)(1 << rt);
171 
172  /* We also introduce ourself. */
173  rti->introduces_railtypes = (RailTypes)(1 << rt);
174 
175  /* Default sort order; order of allocation, but with some
176  * offsets so it's easier for NewGRF to pick a spot without
177  * changing the order of other (original) rail types.
178  * The << is so you can place other railtypes in between the
179  * other railtypes, the 7 is to be able to place something
180  * before the first (default) rail type. */
181  rti->sorting_order = rt << 4 | 7;
182  return rt;
183  }
184  }
185 
186  return INVALID_RAILTYPE;
187 }
188 
189 static const byte _track_sloped_sprites[14] = {
190  14, 15, 22, 13,
191  0, 21, 17, 12,
192  23, 0, 18, 20,
193  19, 16
194 };
195 
196 
197 /* 4
198  * ---------
199  * |\ /|
200  * | \ 1/ |
201  * | \ / |
202  * | \ / |
203  * 16| \ |32
204  * | / \2 |
205  * | / \ |
206  * | / \ |
207  * |/ \|
208  * ---------
209  * 8
210  */
211 
212 
213 
214 /* MAP2 byte: abcd???? => Signal On? Same coding as map3lo
215  * MAP3LO byte: abcd???? => Signal Exists?
216  * a and b are for diagonals, upper and left,
217  * one for each direction. (ie a == NE->SW, b ==
218  * SW->NE, or v.v., I don't know. b and c are
219  * similar for lower and right.
220  * MAP2 byte: ????abcd => Type of ground.
221  * MAP3LO byte: ????abcd => Type of rail.
222  * MAP5: 00abcdef => rail
223  * 01abcdef => rail w/ signals
224  * 10uuuuuu => unused
225  * 11uuuudd => rail depot
226  */
227 
237 {
238  TrackBits rail_bits = TrackToTrackBits(track);
239  return EnsureNoTrainOnTrackBits(tile, rail_bits);
240 }
241 
249 static CommandCost CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags)
250 {
251  if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION);
252 
253  /* So, we have a tile with tracks on it (and possibly signals). Let's see
254  * what tracks first */
255  TrackBits current = GetTrackBits(tile); // The current track layout.
256  TrackBits future = current | to_build; // The track layout we want to build.
257 
258  /* Are we really building something new? */
259  if (current == future) {
260  /* Nothing new is being built */
261  return_cmd_error(STR_ERROR_ALREADY_BUILT);
262  }
263 
264  /* Let's see if we may build this */
265  if ((flags & DC_NO_RAIL_OVERLAP) || HasSignals(tile)) {
266  /* If we are not allowed to overlap (flag is on for ai companies or we have
267  * signals on the tile), check that */
268  if (future != TRACK_BIT_HORZ && future != TRACK_BIT_VERT) {
269  return_cmd_error((flags & DC_NO_RAIL_OVERLAP) ? STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION : STR_ERROR_MUST_REMOVE_SIGNALS_FIRST);
270  }
271  }
272  /* Normally, we may overlap and any combination is valid */
273  return CommandCost();
274 }
275 
276 
282  TRACK_BIT_X,
283 
286  TRACK_BIT_Y,
288 
290  TRACK_BIT_Y,
293 
294  TRACK_BIT_X,
297 };
298 
304  TRACK_BIT_Y | TRACK_BIT_LOWER | TRACK_BIT_LEFT,
305 
308  TRACK_BIT_X | TRACK_BIT_LOWER | TRACK_BIT_RIGHT,
310 
312  TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_LEFT,
315 
316  TRACK_BIT_Y | TRACK_BIT_UPPER | TRACK_BIT_RIGHT,
318  TRACK_BIT_ALL
319 };
320 
329 {
330  if (bits == TRACK_BIT_NONE) return FOUNDATION_NONE;
331 
332  if (IsSteepSlope(tileh)) {
333  /* Test for inclined foundations */
334  if (bits == TRACK_BIT_X) return FOUNDATION_INCLINED_X;
335  if (bits == TRACK_BIT_Y) return FOUNDATION_INCLINED_Y;
336 
337  /* Get higher track */
338  Corner highest_corner = GetHighestSlopeCorner(tileh);
339  TrackBits higher_track = CornerToTrackBits(highest_corner);
340 
341  /* Only higher track? */
342  if (bits == higher_track) return HalftileFoundation(highest_corner);
343 
344  /* Overlap with higher track? */
345  if (TracksOverlap(bits | higher_track)) return FOUNDATION_INVALID;
346 
347  /* either lower track or both higher and lower track */
348  return ((bits & higher_track) != 0 ? FOUNDATION_STEEP_BOTH : FOUNDATION_STEEP_LOWER);
349  } else {
350  if ((~_valid_tracks_without_foundation[tileh] & bits) == 0) return FOUNDATION_NONE;
351 
352  bool valid_on_leveled = ((~_valid_tracks_on_leveled_foundation[tileh] & bits) == 0);
353 
354  Corner track_corner;
355  switch (bits) {
356  case TRACK_BIT_LEFT: track_corner = CORNER_W; break;
357  case TRACK_BIT_LOWER: track_corner = CORNER_S; break;
358  case TRACK_BIT_RIGHT: track_corner = CORNER_E; break;
359  case TRACK_BIT_UPPER: track_corner = CORNER_N; break;
360 
361  case TRACK_BIT_HORZ:
362  if (tileh == SLOPE_N) return HalftileFoundation(CORNER_N);
363  if (tileh == SLOPE_S) return HalftileFoundation(CORNER_S);
364  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
365 
366  case TRACK_BIT_VERT:
367  if (tileh == SLOPE_W) return HalftileFoundation(CORNER_W);
368  if (tileh == SLOPE_E) return HalftileFoundation(CORNER_E);
369  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
370 
371  case TRACK_BIT_X:
373  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
374 
375  case TRACK_BIT_Y:
377  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
378 
379  default:
380  return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID);
381  }
382  /* Single diagonal track */
383 
384  /* Track must be at least valid on leveled foundation */
385  if (!valid_on_leveled) return FOUNDATION_INVALID;
386 
387  /* If slope has three raised corners, build leveled foundation */
389 
390  /* If neighboured corners of track_corner are lowered, build halftile foundation */
391  if ((tileh & SlopeWithThreeCornersRaised(OppositeCorner(track_corner))) == SlopeWithOneCornerRaised(track_corner)) return HalftileFoundation(track_corner);
392 
393  /* else special anti-zig-zag foundation */
394  return SpecialRailFoundation(track_corner);
395  }
396 }
397 
398 
408 static CommandCost CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile)
409 {
410  /* don't allow building on the lower side of a coast */
411  if (GetFloodingBehaviour(tile) != FLOOD_NONE) {
412  if (!IsSteepSlope(tileh) && ((~_valid_tracks_on_leveled_foundation[tileh] & (rail_bits | existing)) != 0)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
413  }
414 
415  Foundation f_new = GetRailFoundation(tileh, rail_bits | existing);
416 
417  /* check track/slope combination */
418  if ((f_new == FOUNDATION_INVALID) ||
420  return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
421  }
422 
423  Foundation f_old = GetRailFoundation(tileh, existing);
424  return CommandCost(EXPENSES_CONSTRUCTION, f_new != f_old ? _price[PR_BUILD_FOUNDATION] : (Money)0);
425 }
426 
427 /* Validate functions for rail building */
428 static inline bool ValParamTrackOrientation(Track track)
429 {
430  return IsValidTrack(track);
431 }
432 
442 CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
443 {
444  RailType railtype = Extract<RailType, 0, 4>(p1);
445  Track track = Extract<Track, 0, 3>(p2);
447 
448  if (!ValParamRailtype(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR;
449 
450  Slope tileh = GetTileSlope(tile);
451  TrackBits trackbit = TrackToTrackBits(track);
452 
453  switch (GetTileType(tile)) {
454  case MP_RAILWAY: {
455  CommandCost ret = CheckTileOwnership(tile);
456  if (ret.Failed()) return ret;
457 
458  if (!IsPlainRail(tile)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message
459 
460  if (!IsCompatibleRail(GetRailType(tile), railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION);
461 
462  ret = CheckTrackCombination(tile, trackbit, flags);
463  if (ret.Succeeded()) ret = EnsureNoTrainOnTrack(tile, track);
464  if (ret.Failed()) return ret;
465 
466  ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile);
467  if (ret.Failed()) return ret;
468  cost.AddCost(ret);
469 
470  /* If the rail types don't match, try to convert only if engines of
471  * the new rail type are not powered on the present rail type and engines of
472  * the present rail type are powered on the new rail type. */
473  if (GetRailType(tile) != railtype && !HasPowerOnRail(railtype, GetRailType(tile))) {
474  if (HasPowerOnRail(GetRailType(tile), railtype)) {
475  ret = DoCommand(tile, tile, railtype, flags, CMD_CONVERT_RAIL);
476  if (ret.Failed()) return ret;
477  cost.AddCost(ret);
478  } else {
479  return CMD_ERROR;
480  }
481  }
482 
483  if (flags & DC_EXEC) {
484  SetRailGroundType(tile, RAIL_GROUND_BARREN);
485  TrackBits bits = GetTrackBits(tile);
486  SetTrackBits(tile, bits | trackbit);
487  /* Subtract old infrastructure count. */
488  uint pieces = CountBits(bits);
489  if (TracksOverlap(bits)) pieces *= pieces;
490  Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] -= pieces;
491  /* Add new infrastructure count. */
492  pieces = CountBits(bits | trackbit);
493  if (TracksOverlap(bits | trackbit)) pieces *= pieces;
494  Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] += pieces;
496  }
497  break;
498  }
499 
500  case MP_ROAD: {
501  /* Level crossings may only be built on these slopes */
502  if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
503 
505  if (ret.Failed()) return ret;
506 
507  if (IsNormalRoad(tile)) {
508  if (HasRoadWorks(tile)) return_cmd_error(STR_ERROR_ROAD_WORKS_IN_PROGRESS);
509 
510  if (GetDisallowedRoadDirections(tile) != DRD_NONE) return_cmd_error(STR_ERROR_CROSSING_ON_ONEWAY_ROAD);
511 
512  if (RailNoLevelCrossings(railtype)) return_cmd_error(STR_ERROR_CROSSING_DISALLOWED);
513 
514  RoadTypes roadtypes = GetRoadTypes(tile);
515  RoadBits road = GetRoadBits(tile, ROADTYPE_ROAD);
516  RoadBits tram = GetRoadBits(tile, ROADTYPE_TRAM);
517  if ((track == TRACK_X && ((road | tram) & ROAD_X) == 0) ||
518  (track == TRACK_Y && ((road | tram) & ROAD_Y) == 0)) {
519  Owner road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
520  Owner tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
521  /* Disallow breaking end-of-line of someone else
522  * so trams can still reverse on this tile. */
523  if (Company::IsValidID(tram_owner) && HasExactlyOneBit(tram)) {
524  CommandCost ret = CheckOwnership(tram_owner);
525  if (ret.Failed()) return ret;
526  }
527  /* Crossings must always have a road... */
528  uint num_new_road_pieces = 2 - CountBits(road);
529  if (road == ROAD_NONE) road_owner = _current_company;
530  roadtypes |= ROADTYPES_ROAD;
531  /* ...but tram is not required. */
532  uint num_new_tram_pieces = (tram != ROAD_NONE) ? 2 - CountBits(tram) : 0;
533 
534  cost.AddCost((num_new_road_pieces + num_new_tram_pieces) * _price[PR_BUILD_ROAD]);
535 
536  if (flags & DC_EXEC) {
537  MakeRoadCrossing(tile, road_owner, tram_owner, _current_company, (track == TRACK_X ? AXIS_Y : AXIS_X), railtype, roadtypes, GetTownIndex(tile));
538  UpdateLevelCrossing(tile, false);
539  Company::Get(_current_company)->infrastructure.rail[railtype] += LEVELCROSSING_TRACKBIT_FACTOR;
541  if (num_new_road_pieces > 0 && Company::IsValidID(road_owner)) {
542  Company::Get(road_owner)->infrastructure.road[ROADTYPE_ROAD] += num_new_road_pieces;
544  }
545  if (num_new_tram_pieces > 0 && Company::IsValidID(tram_owner)) {
546  Company::Get(tram_owner)->infrastructure.road[ROADTYPE_TRAM] += num_new_tram_pieces;
548  }
549  }
550  break;
551  }
552  }
553 
554  if (IsLevelCrossing(tile) && GetCrossingRailBits(tile) == trackbit) {
555  return_cmd_error(STR_ERROR_ALREADY_BUILT);
556  }
557  }
558  FALLTHROUGH;
559 
560  default: {
561  /* Will there be flat water on the lower halftile? */
562  bool water_ground = IsTileType(tile, MP_WATER) && IsSlopeWithOneCornerRaised(tileh);
563 
564  CommandCost ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile);
565  if (ret.Failed()) return ret;
566  cost.AddCost(ret);
567 
568  ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
569  if (ret.Failed()) return ret;
570  cost.AddCost(ret);
571 
572  if (water_ground) {
573  cost.AddCost(-_price[PR_CLEAR_WATER]);
574  cost.AddCost(_price[PR_CLEAR_ROUGH]);
575  }
576 
577  if (flags & DC_EXEC) {
578  MakeRailNormal(tile, _current_company, trackbit, railtype);
579  if (water_ground) SetRailGroundType(tile, RAIL_GROUND_WATER);
580  Company::Get(_current_company)->infrastructure.rail[railtype]++;
582  }
583  break;
584  }
585  }
586 
587  if (flags & DC_EXEC) {
588  MarkTileDirtyByTile(tile);
590  YapfNotifyTrackLayoutChange(tile, track);
591  }
592 
593  cost.AddCost(RailBuildCost(railtype));
594  return cost;
595 }
596 
606 CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
607 {
608  Track track = Extract<Track, 0, 3>(p2);
610  bool crossing = false;
611 
612  if (!ValParamTrackOrientation(track)) return CMD_ERROR;
613  TrackBits trackbit = TrackToTrackBits(track);
614 
615  /* Need to read tile owner now because it may change when the rail is removed
616  * Also, in case of floods, _current_company != owner
617  * There may be invalid tiletype even in exec run (when removing long track),
618  * so do not call GetTileOwner(tile) in any case here */
619  Owner owner = INVALID_OWNER;
620 
621  Train *v = NULL;
622 
623  switch (GetTileType(tile)) {
624  case MP_ROAD: {
625  if (!IsLevelCrossing(tile) || GetCrossingRailBits(tile) != trackbit) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
626 
627  if (_current_company != OWNER_WATER) {
628  CommandCost ret = CheckTileOwnership(tile);
629  if (ret.Failed()) return ret;
630  }
631 
632  if (!(flags & DC_BANKRUPT)) {
634  if (ret.Failed()) return ret;
635  }
636 
637  cost.AddCost(RailClearCost(GetRailType(tile)));
638 
639  if (flags & DC_EXEC) {
640  if (HasReservedTracks(tile, trackbit)) {
641  v = GetTrainForReservation(tile, track);
642  if (v != NULL) FreeTrainTrackReservation(v);
643  }
644  owner = GetTileOwner(tile);
645  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= LEVELCROSSING_TRACKBIT_FACTOR;
648  DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile);
649  }
650  break;
651  }
652 
653  case MP_RAILWAY: {
654  TrackBits present;
655  /* There are no rails present at depots. */
656  if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
657 
658  if (_current_company != OWNER_WATER) {
659  CommandCost ret = CheckTileOwnership(tile);
660  if (ret.Failed()) return ret;
661  }
662 
663  CommandCost ret = EnsureNoTrainOnTrack(tile, track);
664  if (ret.Failed()) return ret;
665 
666  present = GetTrackBits(tile);
667  if ((present & trackbit) == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
668  if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true;
669 
670  cost.AddCost(RailClearCost(GetRailType(tile)));
671 
672  /* Charge extra to remove signals on the track, if they are there */
673  if (HasSignalOnTrack(tile, track)) {
674  cost.AddCost(DoCommand(tile, track, 0, flags, CMD_REMOVE_SIGNALS));
675  }
676 
677  if (flags & DC_EXEC) {
678  if (HasReservedTracks(tile, trackbit)) {
679  v = GetTrainForReservation(tile, track);
680  if (v != NULL) FreeTrainTrackReservation(v);
681  }
682 
683  owner = GetTileOwner(tile);
684 
685  /* Subtract old infrastructure count. */
686  uint pieces = CountBits(present);
687  if (TracksOverlap(present)) pieces *= pieces;
688  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= pieces;
689  /* Add new infrastructure count. */
690  present ^= trackbit;
691  pieces = CountBits(present);
692  if (TracksOverlap(present)) pieces *= pieces;
693  Company::Get(owner)->infrastructure.rail[GetRailType(tile)] += pieces;
695 
696  if (present == 0) {
697  Slope tileh = GetTileSlope(tile);
698  /* If there is flat water on the lower halftile, convert the tile to shore so the water remains */
699  if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh)) {
700  MakeShore(tile);
701  } else {
702  DoClearSquare(tile);
703  }
704  DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile);
705  } else {
706  SetTrackBits(tile, present);
707  SetTrackReservation(tile, GetRailReservationTrackBits(tile) & present);
708  }
709  }
710  break;
711  }
712 
713  default: return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
714  }
715 
716  if (flags & DC_EXEC) {
717  /* if we got that far, 'owner' variable is set correctly */
718  assert(Company::IsValidID(owner));
719 
720  MarkTileDirtyByTile(tile);
721  if (crossing) {
722  /* crossing is set when only TRACK_BIT_X and TRACK_BIT_Y are set. As we
723  * are removing one of these pieces, we'll need to update signals for
724  * both directions explicitly, as after the track is removed it won't
725  * 'connect' with the other piece. */
726  AddTrackToSignalBuffer(tile, TRACK_X, owner);
727  AddTrackToSignalBuffer(tile, TRACK_Y, owner);
730  } else {
731  AddTrackToSignalBuffer(tile, track, owner);
732  YapfNotifyTrackLayoutChange(tile, track);
733  }
734 
735  if (v != NULL) TryPathReserve(v, true);
736  }
737 
738  return cost;
739 }
740 
741 
750 {
751  assert(IsPlainRailTile(t));
752 
753  bool flooded = false;
754  if (GetRailGroundType(t) == RAIL_GROUND_WATER) return flooded;
755 
756  Slope tileh = GetTileSlope(t);
757  TrackBits rail_bits = GetTrackBits(t);
758 
759  if (IsSlopeWithOneCornerRaised(tileh)) {
761 
762  TrackBits to_remove = lower_track & rail_bits;
763  if (to_remove != 0) {
764  Backup<CompanyByte> cur_company(_current_company, OWNER_WATER, FILE_LINE);
765  flooded = DoCommand(t, 0, FIND_FIRST_BIT(to_remove), DC_EXEC, CMD_REMOVE_SINGLE_RAIL).Succeeded();
766  cur_company.Restore();
767  if (!flooded) return flooded; // not yet floodable
768  rail_bits = rail_bits & ~to_remove;
769  if (rail_bits == 0) {
770  MakeShore(t);
772  return flooded;
773  }
774  }
775 
776  if (IsNonContinuousFoundation(GetRailFoundation(tileh, rail_bits))) {
777  flooded = true;
778  SetRailGroundType(t, RAIL_GROUND_WATER);
780  }
781  } else {
782  /* Make shore on steep slopes and 'three-corners-raised'-slopes. */
783  if (ApplyFoundationToSlope(GetRailFoundation(tileh, rail_bits), &tileh) == 0) {
784  if (IsSteepSlope(tileh) || IsSlopeWithThreeCornersRaised(tileh)) {
785  flooded = true;
786  SetRailGroundType(t, RAIL_GROUND_WATER);
788  }
789  }
790  }
791  return flooded;
792 }
793 
794 static const TileIndexDiffC _trackdelta[] = {
795  { -1, 0 }, { 0, 1 }, { -1, 0 }, { 0, 1 }, { 1, 0 }, { 0, 1 },
796  { 0, 0 },
797  { 0, 0 },
798  { 1, 0 }, { 0, -1 }, { 0, -1 }, { 1, 0 }, { 0, -1 }, { -1, 0 },
799  { 0, 0 },
800  { 0, 0 }
801 };
802 
803 
804 static CommandCost ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileIndex end)
805 {
806  int x = TileX(start);
807  int y = TileY(start);
808  int ex = TileX(end);
809  int ey = TileY(end);
810 
811  if (!ValParamTrackOrientation(TrackdirToTrack(*trackdir))) return CMD_ERROR;
812 
813  /* calculate delta x,y from start to end tile */
814  int dx = ex - x;
815  int dy = ey - y;
816 
817  /* calculate delta x,y for the first direction */
818  int trdx = _trackdelta[*trackdir].x;
819  int trdy = _trackdelta[*trackdir].y;
820 
821  if (!IsDiagonalTrackdir(*trackdir)) {
822  trdx += _trackdelta[*trackdir ^ 1].x;
823  trdy += _trackdelta[*trackdir ^ 1].y;
824  }
825 
826  /* validate the direction */
827  while ((trdx <= 0 && dx > 0) ||
828  (trdx >= 0 && dx < 0) ||
829  (trdy <= 0 && dy > 0) ||
830  (trdy >= 0 && dy < 0)) {
831  if (!HasBit(*trackdir, 3)) { // first direction is invalid, try the other
832  SetBit(*trackdir, 3); // reverse the direction
833  trdx = -trdx;
834  trdy = -trdy;
835  } else { // other direction is invalid too, invalid drag
836  return CMD_ERROR;
837  }
838  }
839 
840  /* (for diagonal tracks, this is already made sure of by above test), but:
841  * for non-diagonal tracks, check if the start and end tile are on 1 line */
842  if (!IsDiagonalTrackdir(*trackdir)) {
843  trdx = _trackdelta[*trackdir].x;
844  trdy = _trackdelta[*trackdir].y;
845  if (abs(dx) != abs(dy) && abs(dx) + abs(trdy) != abs(dy) + abs(trdx)) return CMD_ERROR;
846  }
847 
848  return CommandCost();
849 }
850 
864 static CommandCost CmdRailTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
865 {
867  Track track = Extract<Track, 4, 3>(p2);
868  bool remove = HasBit(p2, 7);
869  RailType railtype = Extract<RailType, 0, 4>(p2);
870 
871  if ((!remove && !ValParamRailtype(railtype)) || !ValParamTrackOrientation(track)) return CMD_ERROR;
872  if (p1 >= MapSize()) return CMD_ERROR;
873  TileIndex end_tile = p1;
874  Trackdir trackdir = TrackToTrackdir(track);
875 
876  CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile);
877  if (ret.Failed()) return ret;
878 
879  bool had_success = false;
880  CommandCost last_error = CMD_ERROR;
881  for (;;) {
882  CommandCost ret = DoCommand(tile, remove ? 0 : railtype, TrackdirToTrack(trackdir), flags, remove ? CMD_REMOVE_SINGLE_RAIL : CMD_BUILD_SINGLE_RAIL);
883 
884  if (ret.Failed()) {
885  last_error = ret;
886  if (last_error.GetErrorMessage() != STR_ERROR_ALREADY_BUILT && !remove) {
887  if (HasBit(p2, 8)) return last_error;
888  break;
889  }
890 
891  /* Ownership errors are more important. */
892  if (last_error.GetErrorMessage() == STR_ERROR_OWNED_BY && remove) break;
893  } else {
894  had_success = true;
895  total_cost.AddCost(ret);
896  }
897 
898  if (tile == end_tile) break;
899 
900  tile += ToTileIndexDiff(_trackdelta[trackdir]);
901 
902  /* toggle railbit for the non-diagonal tracks */
903  if (!IsDiagonalTrackdir(trackdir)) ToggleBit(trackdir, 0);
904  }
905 
906  if (had_success) return total_cost;
907  return last_error;
908 }
909 
924 CommandCost CmdBuildRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
925 {
926  return CmdRailTrackHelper(tile, flags, p1, ClrBit(p2, 7), text);
927 }
928 
943 CommandCost CmdRemoveRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
944 {
945  return CmdRailTrackHelper(tile, flags, p1, SetBit(p2, 7), text);
946 }
947 
960 CommandCost CmdBuildTrainDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
961 {
962  /* check railtype and valid direction for depot (0 through 3), 4 in total */
963  RailType railtype = Extract<RailType, 0, 4>(p1);
964  if (!ValParamRailtype(railtype)) return CMD_ERROR;
965 
966  Slope tileh = GetTileSlope(tile);
967 
968  DiagDirection dir = Extract<DiagDirection, 0, 2>(p2);
969 
970  /* Prohibit construction if
971  * The tile is non-flat AND
972  * 1) build-on-slopes is disabled
973  * 2) the tile is steep i.e. spans two height levels
974  * 3) the exit points in the wrong direction
975  */
976 
977  if (tileh != SLOPE_FLAT && (
979  !CanBuildDepotByTileh(dir, tileh)
980  )) {
981  return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
982  }
983 
984  CommandCost cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
985  if (cost.Failed()) return cost;
986 
987  if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
988 
989  if (!Depot::CanAllocateItem()) return CMD_ERROR;
990 
991  if (flags & DC_EXEC) {
992  Depot *d = new Depot(tile);
993  d->build_date = _date;
994 
995  MakeRailDepot(tile, _current_company, d->index, dir, railtype);
996  MarkTileDirtyByTile(tile);
997  MakeDefaultName(d);
998 
999  Company::Get(_current_company)->infrastructure.rail[railtype]++;
1001 
1004  }
1005 
1006  cost.AddCost(_price[PR_BUILD_DEPOT_TRAIN]);
1007  cost.AddCost(RailBuildCost(railtype));
1008  return cost;
1009 }
1010 
1032 CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1033 {
1034  Track track = Extract<Track, 0, 3>(p1);
1035  bool ctrl_pressed = HasBit(p1, 3); // was the CTRL button pressed
1036  SignalVariant sigvar = (ctrl_pressed ^ HasBit(p1, 4)) ? SIG_SEMAPHORE : SIG_ELECTRIC; // the signal variant of the new signal
1037  SignalType sigtype = Extract<SignalType, 5, 3>(p1); // the signal type of the new signal
1038  bool convert_signal = HasBit(p1, 8); // convert button pressed
1039  SignalType cycle_start = Extract<SignalType, 9, 3>(p1);
1040  SignalType cycle_stop = Extract<SignalType, 12, 3>(p1);
1041  uint num_dir_cycle = GB(p1, 15, 2);
1042 
1043  if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
1044  if (cycle_start > cycle_stop || cycle_stop > SIGTYPE_LAST) return CMD_ERROR;
1045 
1046  /* You can only build signals on plain rail tiles, and the selected track must exist */
1047  if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) ||
1048  !HasTrack(tile, track)) {
1049  return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1050  }
1051  /* Protect against invalid signal copying */
1052  if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR;
1053 
1054  CommandCost ret = CheckTileOwnership(tile);
1055  if (ret.Failed()) return ret;
1056 
1057  /* See if this is a valid track combination for signals (no overlap) */
1058  if (TracksOverlap(GetTrackBits(tile))) return_cmd_error(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK);
1059 
1060  /* In case we don't want to change an existing signal, return without error. */
1061  if (HasBit(p1, 17) && HasSignalOnTrack(tile, track)) return CommandCost();
1062 
1063  /* you can not convert a signal if no signal is on track */
1064  if (convert_signal && !HasSignalOnTrack(tile, track)) return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS);
1065 
1066  CommandCost cost;
1067  if (!HasSignalOnTrack(tile, track)) {
1068  /* build new signals */
1069  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS]);
1070  } else {
1071  if (p2 != 0 && sigvar != GetSignalVariant(tile, track)) {
1072  /* convert signals <-> semaphores */
1073  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]);
1074 
1075  } else if (convert_signal) {
1076  /* convert button pressed */
1077  if (ctrl_pressed || GetSignalVariant(tile, track) != sigvar) {
1078  /* convert electric <-> semaphore */
1079  cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]);
1080  } else {
1081  /* it is free to change signal type: normal-pre-exit-combo */
1082  cost = CommandCost();
1083  }
1084 
1085  } else {
1086  /* it is free to change orientation/pre-exit-combo signals */
1087  cost = CommandCost();
1088  }
1089  }
1090 
1091  if (flags & DC_EXEC) {
1092  Train *v = NULL;
1093  /* The new/changed signal could block our path. As this can lead to
1094  * stale reservations, we clear the path reservation here and try
1095  * to redo it later on. */
1096  if (HasReservedTracks(tile, TrackToTrackBits(track))) {
1097  v = GetTrainForReservation(tile, track);
1098  if (v != NULL) FreeTrainTrackReservation(v);
1099  }
1100 
1101  if (!HasSignals(tile)) {
1102  /* there are no signals at all on this tile yet */
1103  SetHasSignals(tile, true);
1104  SetSignalStates(tile, 0xF); // all signals are on
1105  SetPresentSignals(tile, 0); // no signals built by default
1106  SetSignalType(tile, track, sigtype);
1107  SetSignalVariant(tile, track, sigvar);
1108  }
1109 
1110  /* Subtract old signal infrastructure count. */
1111  Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile));
1112 
1113  if (p2 == 0) {
1114  if (!HasSignalOnTrack(tile, track)) {
1115  /* build new signals */
1116  SetPresentSignals(tile, GetPresentSignals(tile) | (IsPbsSignal(sigtype) ? KillFirstBit(SignalOnTrack(track)) : SignalOnTrack(track)));
1117  SetSignalType(tile, track, sigtype);
1118  SetSignalVariant(tile, track, sigvar);
1119  while (num_dir_cycle-- > 0) CycleSignalSide(tile, track);
1120  } else {
1121  if (convert_signal) {
1122  /* convert signal button pressed */
1123  if (ctrl_pressed) {
1124  /* toggle the present signal variant: SIG_ELECTRIC <-> SIG_SEMAPHORE */
1125  SetSignalVariant(tile, track, (GetSignalVariant(tile, track) == SIG_ELECTRIC) ? SIG_SEMAPHORE : SIG_ELECTRIC);
1126  /* Query current signal type so the check for PBS signals below works. */
1127  sigtype = GetSignalType(tile, track);
1128  } else {
1129  /* convert the present signal to the chosen type and variant */
1130  SetSignalType(tile, track, sigtype);
1131  SetSignalVariant(tile, track, sigvar);
1132  if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) {
1133  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track)));
1134  }
1135  }
1136 
1137  } else if (ctrl_pressed) {
1138  /* cycle between cycle_start and cycle_end */
1139  sigtype = (SignalType)(GetSignalType(tile, track) + 1);
1140 
1141  if (sigtype < cycle_start || sigtype > cycle_stop) sigtype = cycle_start;
1142 
1143  SetSignalType(tile, track, sigtype);
1144  if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) {
1145  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track)));
1146  }
1147  } else {
1148  /* cycle the signal side: both -> left -> right -> both -> ... */
1149  CycleSignalSide(tile, track);
1150  /* Query current signal type so the check for PBS signals below works. */
1151  sigtype = GetSignalType(tile, track);
1152  }
1153  }
1154  } else {
1155  /* If CmdBuildManySignals is called with copying signals, just copy the
1156  * direction of the first signal given as parameter by CmdBuildManySignals */
1157  SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | (p2 & SignalOnTrack(track)));
1158  SetSignalVariant(tile, track, sigvar);
1159  SetSignalType(tile, track, sigtype);
1160  }
1161 
1162  /* Add new signal infrastructure count. */
1163  Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile));
1165 
1166  if (IsPbsSignal(sigtype)) {
1167  /* PBS signals should show red unless they are on reserved tiles without a train. */
1168  uint mask = GetPresentSignals(tile) & SignalOnTrack(track);
1169  SetSignalStates(tile, (GetSignalStates(tile) & ~mask) | ((HasBit(GetRailReservationTrackBits(tile), track) && EnsureNoVehicleOnGround(tile).Succeeded() ? UINT_MAX : 0) & mask));
1170  }
1171  MarkTileDirtyByTile(tile);
1173  YapfNotifyTrackLayoutChange(tile, track);
1174  if (v != NULL) {
1175  /* Extend the train's path if it's not stopped or loading, or not at a safe position. */
1176  if (!(((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) || v->current_order.IsType(OT_LOADING)) ||
1178  TryPathReserve(v, true);
1179  }
1180  }
1181  }
1182 
1183  return cost;
1184 }
1185 
1186 static bool CheckSignalAutoFill(TileIndex &tile, Trackdir &trackdir, int &signal_ctr, bool remove)
1187 {
1188  tile = AddTileIndexDiffCWrap(tile, _trackdelta[trackdir]);
1189  if (tile == INVALID_TILE) return false;
1190 
1191  /* Check for track bits on the new tile */
1193 
1194  if (TracksOverlap(TrackdirBitsToTrackBits(trackdirbits))) return false;
1195  trackdirbits &= TrackdirReachesTrackdirs(trackdir);
1196 
1197  /* No track bits, must stop */
1198  if (trackdirbits == TRACKDIR_BIT_NONE) return false;
1199 
1200  /* Get the first track dir */
1201  trackdir = RemoveFirstTrackdir(&trackdirbits);
1202 
1203  /* Any left? It's a junction so we stop */
1204  if (trackdirbits != TRACKDIR_BIT_NONE) return false;
1205 
1206  switch (GetTileType(tile)) {
1207  case MP_RAILWAY:
1208  if (IsRailDepot(tile)) return false;
1209  if (!remove && HasSignalOnTrack(tile, TrackdirToTrack(trackdir))) return false;
1210  signal_ctr++;
1211  if (IsDiagonalTrackdir(trackdir)) {
1212  signal_ctr++;
1213  /* Ensure signal_ctr even so X and Y pieces get signals */
1214  ClrBit(signal_ctr, 0);
1215  }
1216  return true;
1217 
1218  case MP_ROAD:
1219  if (!IsLevelCrossing(tile)) return false;
1220  signal_ctr += 2;
1221  return true;
1222 
1223  case MP_TUNNELBRIDGE: {
1224  TileIndex orig_tile = tile; // backup old value
1225 
1226  if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) return false;
1227  if (GetTunnelBridgeDirection(tile) != TrackdirToExitdir(trackdir)) return false;
1228 
1229  /* Skip to end of tunnel or bridge
1230  * note that tile is a parameter by reference, so it must be updated */
1231  tile = GetOtherTunnelBridgeEnd(tile);
1232 
1233  signal_ctr += (GetTunnelBridgeLength(orig_tile, tile) + 2) * 2;
1234  return true;
1235  }
1236 
1237  default: return false;
1238  }
1239 }
1240 
1258 static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1259 {
1260  CommandCost total_cost(EXPENSES_CONSTRUCTION);
1261  TileIndex start_tile = tile;
1262 
1263  Track track = Extract<Track, 0, 3>(p2);
1264  bool mode = HasBit(p2, 3);
1265  bool semaphores = HasBit(p2, 4);
1266  bool remove = HasBit(p2, 5);
1267  bool autofill = HasBit(p2, 6);
1268  bool minimise_gaps = HasBit(p2, 10);
1269  byte signal_density = GB(p2, 24, 8);
1270 
1271  if (p1 >= MapSize() || !ValParamTrackOrientation(track)) return CMD_ERROR;
1272  TileIndex end_tile = p1;
1273  if (signal_density == 0 || signal_density > 20) return CMD_ERROR;
1274 
1275  if (!IsPlainRailTile(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1276 
1277  /* for vertical/horizontal tracks, double the given signals density
1278  * since the original amount will be too dense (shorter tracks) */
1279  signal_density *= 2;
1280 
1281  Trackdir trackdir = TrackToTrackdir(track);
1282  CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile);
1283  if (ret.Failed()) return ret;
1284 
1285  track = TrackdirToTrack(trackdir); // trackdir might have changed, keep track in sync
1286  Trackdir start_trackdir = trackdir;
1287 
1288  /* Must start on a valid track to be able to avoid loops */
1289  if (!HasTrack(tile, track)) return CMD_ERROR;
1290 
1291  SignalType sigtype = (SignalType)GB(p2, 7, 3);
1292  if (sigtype > SIGTYPE_LAST) return CMD_ERROR;
1293 
1294  byte signals;
1295  /* copy the signal-style of the first rail-piece if existing */
1296  if (HasSignalOnTrack(tile, track)) {
1297  signals = GetPresentSignals(tile) & SignalOnTrack(track);
1298  assert(signals != 0);
1299 
1300  /* copy signal/semaphores style (independent of CTRL) */
1301  semaphores = GetSignalVariant(tile, track) != SIG_ELECTRIC;
1302 
1303  sigtype = GetSignalType(tile, track);
1304  /* Don't but copy entry or exit-signal type */
1305  if (sigtype == SIGTYPE_ENTRY || sigtype == SIGTYPE_EXIT) sigtype = SIGTYPE_NORMAL;
1306  } else { // no signals exist, drag a two-way signal stretch
1307  signals = IsPbsSignal(sigtype) ? SignalAlongTrackdir(trackdir) : SignalOnTrack(track);
1308  }
1309 
1310  byte signal_dir = 0;
1311  if (signals & SignalAlongTrackdir(trackdir)) SetBit(signal_dir, 0);
1312  if (signals & SignalAgainstTrackdir(trackdir)) SetBit(signal_dir, 1);
1313 
1314  /* signal_ctr - amount of tiles already processed
1315  * last_used_ctr - amount of tiles before previously placed signal
1316  * signals_density - setting to put signal on every Nth tile (double space on |, -- tracks)
1317  * last_suitable_ctr - amount of tiles before last possible signal place
1318  * last_suitable_tile - last tile where it is possible to place a signal
1319  * last_suitable_trackdir - trackdir of the last tile
1320  **********
1321  * trackdir - trackdir to build with autorail
1322  * semaphores - semaphores or signals
1323  * signals - is there a signal/semaphore on the first tile, copy its style (two-way/single-way)
1324  * and convert all others to semaphore/signal
1325  * remove - 1 remove signals, 0 build signals */
1326  int signal_ctr = 0;
1327  int last_used_ctr = INT_MIN; // initially INT_MIN to force building/removing at the first tile
1328  int last_suitable_ctr = 0;
1329  TileIndex last_suitable_tile = INVALID_TILE;
1330  Trackdir last_suitable_trackdir = INVALID_TRACKDIR;
1331  CommandCost last_error = CMD_ERROR;
1332  bool had_success = false;
1333  for (;;) {
1334  /* only build/remove signals with the specified density */
1335  if (remove || minimise_gaps || signal_ctr % signal_density == 0) {
1336  uint32 p1 = GB(TrackdirToTrack(trackdir), 0, 3);
1337  SB(p1, 3, 1, mode);
1338  SB(p1, 4, 1, semaphores);
1339  SB(p1, 5, 3, sigtype);
1340  if (!remove && signal_ctr == 0) SetBit(p1, 17);
1341 
1342  /* Pick the correct orientation for the track direction */
1343  signals = 0;
1344  if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(trackdir);
1345  if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(trackdir);
1346 
1347  /* Test tiles in between for suitability as well if minimising gaps. */
1348  bool test_only = !remove && minimise_gaps && signal_ctr < (last_used_ctr + signal_density);
1349  CommandCost ret = DoCommand(tile, p1, signals, test_only ? flags & ~DC_EXEC : flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS);
1350 
1351  if (ret.Succeeded()) {
1352  /* Remember last track piece where we can place a signal. */
1353  last_suitable_ctr = signal_ctr;
1354  last_suitable_tile = tile;
1355  last_suitable_trackdir = trackdir;
1356  } else if (!test_only && last_suitable_tile != INVALID_TILE) {
1357  /* If a signal can't be placed, place it at the last possible position. */
1358  SB(p1, 0, 3, TrackdirToTrack(last_suitable_trackdir));
1359  ClrBit(p1, 17);
1360 
1361  /* Pick the correct orientation for the track direction. */
1362  signals = 0;
1363  if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(last_suitable_trackdir);
1364  if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(last_suitable_trackdir);
1365 
1366  ret = DoCommand(last_suitable_tile, p1, signals, flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS);
1367  }
1368 
1369  /* Collect cost. */
1370  if (!test_only) {
1371  /* Be user-friendly and try placing signals as much as possible */
1372  if (ret.Succeeded()) {
1373  had_success = true;
1374  total_cost.AddCost(ret);
1375  last_used_ctr = last_suitable_ctr;
1376  last_suitable_tile = INVALID_TILE;
1377  } else {
1378  /* The "No railway" error is the least important one. */
1379  if (ret.GetErrorMessage() != STR_ERROR_THERE_IS_NO_RAILROAD_TRACK ||
1380  last_error.GetErrorMessage() == INVALID_STRING_ID) {
1381  last_error = ret;
1382  }
1383  }
1384  }
1385  }
1386 
1387  if (autofill) {
1388  if (!CheckSignalAutoFill(tile, trackdir, signal_ctr, remove)) break;
1389 
1390  /* Prevent possible loops */
1391  if (tile == start_tile && trackdir == start_trackdir) break;
1392  } else {
1393  if (tile == end_tile) break;
1394 
1395  tile += ToTileIndexDiff(_trackdelta[trackdir]);
1396  signal_ctr++;
1397 
1398  /* toggle railbit for the non-diagonal tracks (|, -- tracks) */
1399  if (IsDiagonalTrackdir(trackdir)) {
1400  signal_ctr++;
1401  } else {
1402  ToggleBit(trackdir, 0);
1403  }
1404  }
1405  }
1406 
1407  return had_success ? total_cost : last_error;
1408 }
1409 
1428 CommandCost CmdBuildSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1429 {
1430  return CmdSignalTrackHelper(tile, flags, p1, p2, text);
1431 }
1432 
1445 CommandCost CmdRemoveSingleSignal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1446 {
1447  Track track = Extract<Track, 0, 3>(p1);
1448 
1449  if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) || !HasTrack(tile, track)) {
1450  return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK);
1451  }
1452  if (!HasSignalOnTrack(tile, track)) {
1453  return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS);
1454  }
1455 
1456  /* Only water can remove signals from anyone */
1457  if (_current_company != OWNER_WATER) {
1458  CommandCost ret = CheckTileOwnership(tile);
1459  if (ret.Failed()) return ret;
1460  }
1461 
1462  /* Do it? */
1463  if (flags & DC_EXEC) {
1464  Train *v = NULL;
1465  if (HasReservedTracks(tile, TrackToTrackBits(track))) {
1466  v = GetTrainForReservation(tile, track);
1467  } else if (IsPbsSignal(GetSignalType(tile, track))) {
1468  /* PBS signal, might be the end of a path reservation. */
1469  Trackdir td = TrackToTrackdir(track);
1470  for (int i = 0; v == NULL && i < 2; i++, td = ReverseTrackdir(td)) {
1471  /* Only test the active signal side. */
1472  if (!HasSignalOnTrackdir(tile, ReverseTrackdir(td))) continue;
1473  TileIndex next = TileAddByDiagDir(tile, TrackdirToExitdir(td));
1475  if (HasReservedTracks(next, tracks)) {
1477  }
1478  }
1479  }
1480  Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile));
1481  SetPresentSignals(tile, GetPresentSignals(tile) & ~SignalOnTrack(track));
1482  Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile));
1484 
1485  /* removed last signal from tile? */
1486  if (GetPresentSignals(tile) == 0) {
1487  SetSignalStates(tile, 0);
1488  SetHasSignals(tile, false);
1489  SetSignalVariant(tile, INVALID_TRACK, SIG_ELECTRIC); // remove any possible semaphores
1490  }
1491 
1492  AddTrackToSignalBuffer(tile, track, GetTileOwner(tile));
1493  YapfNotifyTrackLayoutChange(tile, track);
1494  if (v != NULL) TryPathReserve(v, false);
1495 
1496  MarkTileDirtyByTile(tile);
1497  }
1498 
1499  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_SIGNALS]);
1500 }
1501 
1520 CommandCost CmdRemoveSignalTrack(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1521 {
1522  return CmdSignalTrackHelper(tile, flags, p1, SetBit(p2, 5), text); // bit 5 is remove bit
1523 }
1524 
1526 static Vehicle *UpdateTrainPowerProc(Vehicle *v, void *data)
1527 {
1528  if (v->type != VEH_TRAIN) return NULL;
1529 
1530  TrainList *affected_trains = static_cast<TrainList*>(data);
1531  affected_trains->Include(Train::From(v)->First());
1532 
1533  return NULL;
1534 }
1535 
1548 CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
1549 {
1550  RailType totype = Extract<RailType, 0, 4>(p2);
1551  TileIndex area_start = p1;
1552  TileIndex area_end = tile;
1553  bool diagonal = HasBit(p2, 4);
1554 
1555  if (!ValParamRailtype(totype)) return CMD_ERROR;
1556  if (area_start >= MapSize()) return CMD_ERROR;
1557 
1558  TrainList affected_trains;
1559 
1561  CommandCost error = CommandCost(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); // by default, there is no track to convert.
1562 
1563  TileIterator *iter = diagonal ? (TileIterator *)new DiagonalTileIterator(area_start, area_end) : new OrthogonalTileIterator(area_start, area_end);
1564  for (; (tile = *iter) != INVALID_TILE; ++(*iter)) {
1565  TileType tt = GetTileType(tile);
1566 
1567  /* Check if there is any track on tile */
1568  switch (tt) {
1569  case MP_RAILWAY:
1570  break;
1571  case MP_STATION:
1572  if (!HasStationRail(tile)) continue;
1573  break;
1574  case MP_ROAD:
1575  if (!IsLevelCrossing(tile)) continue;
1576  if (RailNoLevelCrossings(totype)) {
1577  error.MakeError(STR_ERROR_CROSSING_DISALLOWED);
1578  continue;
1579  }
1580  break;
1581  case MP_TUNNELBRIDGE:
1582  if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) continue;
1583  break;
1584  default: continue;
1585  }
1586 
1587  /* Original railtype we are converting from */
1588  RailType type = GetRailType(tile);
1589 
1590  /* Converting to the same type or converting 'hidden' elrail -> rail */
1591  if (type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && type == RAILTYPE_ELECTRIC)) continue;
1592 
1593  /* Trying to convert other's rail */
1594  CommandCost ret = CheckTileOwnership(tile);
1595  if (ret.Failed()) {
1596  error = ret;
1597  continue;
1598  }
1599 
1600  SmallVector<Train *, 2> vehicles_affected;
1601 
1602  /* Vehicle on the tile when not converting Rail <-> ElRail
1603  * Tunnels and bridges have special check later */
1604  if (tt != MP_TUNNELBRIDGE) {
1605  if (!IsCompatibleRail(type, totype)) {
1607  if (ret.Failed()) {
1608  error = ret;
1609  continue;
1610  }
1611  }
1612  if (flags & DC_EXEC) { // we can safely convert, too
1613  TrackBits reserved = GetReservedTrackbits(tile);
1614  Track track;
1615  while ((track = RemoveFirstTrack(&reserved)) != INVALID_TRACK) {
1616  Train *v = GetTrainForReservation(tile, track);
1617  if (v != NULL && !HasPowerOnRail(v->railtype, totype)) {
1618  /* No power on new rail type, reroute. */
1620  *vehicles_affected.Append() = v;
1621  }
1622  }
1623 
1624  /* Update the company infrastructure counters. */
1625  if (!IsRailStationTile(tile) || !IsStationTileBlocked(tile)) {
1626  Company *c = Company::Get(GetTileOwner(tile));
1627  uint num_pieces = IsLevelCrossingTile(tile) ? LEVELCROSSING_TRACKBIT_FACTOR : 1;
1628  if (IsPlainRailTile(tile)) {
1629  TrackBits bits = GetTrackBits(tile);
1630  num_pieces = CountBits(bits);
1631  if (TracksOverlap(bits)) num_pieces *= num_pieces;
1632  }
1633  c->infrastructure.rail[type] -= num_pieces;
1634  c->infrastructure.rail[totype] += num_pieces;
1636  }
1637 
1638  SetRailType(tile, totype);
1639  MarkTileDirtyByTile(tile);
1640  /* update power of train on this tile */
1641  FindVehicleOnPos(tile, &affected_trains, &UpdateTrainPowerProc);
1642  }
1643  }
1644 
1645  switch (tt) {
1646  case MP_RAILWAY:
1647  switch (GetRailTileType(tile)) {
1648  case RAIL_TILE_DEPOT:
1649  if (flags & DC_EXEC) {
1650  /* notify YAPF about the track layout change */
1652 
1653  /* Update build vehicle window related to this depot */
1656  }
1657  cost.AddCost(RailConvertCost(type, totype));
1658  break;
1659 
1660  default: // RAIL_TILE_NORMAL, RAIL_TILE_SIGNALS
1661  if (flags & DC_EXEC) {
1662  /* notify YAPF about the track layout change */
1663  TrackBits tracks = GetTrackBits(tile);
1664  while (tracks != TRACK_BIT_NONE) {
1666  }
1667  }
1668  cost.AddCost(RailConvertCost(type, totype) * CountBits(GetTrackBits(tile)));
1669  break;
1670  }
1671  break;
1672 
1673  case MP_TUNNELBRIDGE: {
1674  TileIndex endtile = GetOtherTunnelBridgeEnd(tile);
1675 
1676  /* If both ends of tunnel/bridge are in the range, do not try to convert twice -
1677  * it would cause assert because of different test and exec runs */
1678  if (endtile < tile) {
1679  if (diagonal) {
1680  if (DiagonalTileArea(area_start, area_end).Contains(endtile)) continue;
1681  } else {
1682  if (OrthogonalTileArea(area_start, area_end).Contains(endtile)) continue;
1683  }
1684  }
1685 
1686  /* When not converting rail <-> el. rail, any vehicle cannot be in tunnel/bridge */
1687  if (!IsCompatibleRail(GetRailType(tile), totype)) {
1688  CommandCost ret = TunnelBridgeIsFree(tile, endtile);
1689  if (ret.Failed()) {
1690  error = ret;
1691  continue;
1692  }
1693  }
1694 
1695  if (flags & DC_EXEC) {
1697  if (HasTunnelBridgeReservation(tile)) {
1698  Train *v = GetTrainForReservation(tile, track);
1699  if (v != NULL && !HasPowerOnRail(v->railtype, totype)) {
1700  /* No power on new rail type, reroute. */
1702  *vehicles_affected.Append() = v;
1703  }
1704  }
1705 
1706  /* Update the company infrastructure counters. */
1707  uint num_pieces = (GetTunnelBridgeLength(tile, endtile) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
1708  Company *c = Company::Get(GetTileOwner(tile));
1709  c->infrastructure.rail[GetRailType(tile)] -= num_pieces;
1710  c->infrastructure.rail[totype] += num_pieces;
1712 
1713  SetRailType(tile, totype);
1714  SetRailType(endtile, totype);
1715 
1716  FindVehicleOnPos(tile, &affected_trains, &UpdateTrainPowerProc);
1717  FindVehicleOnPos(endtile, &affected_trains, &UpdateTrainPowerProc);
1718 
1719  YapfNotifyTrackLayoutChange(tile, track);
1720  YapfNotifyTrackLayoutChange(endtile, track);
1721 
1722  if (IsBridge(tile)) {
1723  MarkBridgeDirty(tile);
1724  } else {
1725  MarkTileDirtyByTile(tile);
1726  MarkTileDirtyByTile(endtile);
1727  }
1728  }
1729 
1730  cost.AddCost((GetTunnelBridgeLength(tile, endtile) + 2) * RailConvertCost(type, totype));
1731  break;
1732  }
1733 
1734  default: // MP_STATION, MP_ROAD
1735  if (flags & DC_EXEC) {
1736  Track track = ((tt == MP_STATION) ? GetRailStationTrack(tile) : GetCrossingRailTrack(tile));
1737  YapfNotifyTrackLayoutChange(tile, track);
1738  }
1739 
1740  cost.AddCost(RailConvertCost(type, totype));
1741  break;
1742  }
1743 
1744  for (uint i = 0; i < vehicles_affected.Length(); ++i) {
1745  TryPathReserve(vehicles_affected[i], true);
1746  }
1747  }
1748 
1749  if (flags & DC_EXEC) {
1750  /* Railtype changed, update trains as when entering different track */
1751  for (Train **v = affected_trains.Begin(); v != affected_trains.End(); v++) {
1752  (*v)->ConsistChanged(CCF_TRACK);
1753  }
1754  }
1755 
1756  delete iter;
1757  return (cost.GetCost() == 0) ? error : cost;
1758 }
1759 
1760 static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags)
1761 {
1762  if (_current_company != OWNER_WATER) {
1763  CommandCost ret = CheckTileOwnership(tile);
1764  if (ret.Failed()) return ret;
1765  }
1766 
1768  if (ret.Failed()) return ret;
1769 
1770  if (flags & DC_EXEC) {
1771  /* read variables before the depot is removed */
1773  Owner owner = GetTileOwner(tile);
1774  Train *v = NULL;
1775 
1776  if (HasDepotReservation(tile)) {
1778  if (v != NULL) FreeTrainTrackReservation(v);
1779  }
1780 
1781  Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--;
1783 
1784  delete Depot::GetByTile(tile);
1785  DoClearSquare(tile);
1786  AddSideToSignalBuffer(tile, dir, owner);
1788  if (v != NULL) TryPathReserve(v, true);
1789  }
1790 
1791  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_DEPOT_TRAIN]);
1792 }
1793 
1794 static CommandCost ClearTile_Track(TileIndex tile, DoCommandFlag flags)
1795 {
1797 
1798  if (flags & DC_AUTO) {
1799  if (!IsTileOwner(tile, _current_company)) {
1800  return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
1801  }
1802 
1803  if (IsPlainRail(tile)) {
1804  return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
1805  } else {
1806  return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
1807  }
1808  }
1809 
1810  switch (GetRailTileType(tile)) {
1811  case RAIL_TILE_SIGNALS:
1812  case RAIL_TILE_NORMAL: {
1813  Slope tileh = GetTileSlope(tile);
1814  /* Is there flat water on the lower halftile that gets cleared expensively? */
1815  bool water_ground = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh));
1816 
1817  TrackBits tracks = GetTrackBits(tile);
1818  while (tracks != TRACK_BIT_NONE) {
1819  Track track = RemoveFirstTrack(&tracks);
1820  CommandCost ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL);
1821  if (ret.Failed()) return ret;
1822  cost.AddCost(ret);
1823  }
1824 
1825  /* When bankrupting, don't make water dirty, there could be a ship on lower halftile.
1826  * Same holds for non-companies clearing the tile, e.g. disasters. */
1827  if (water_ground && !(flags & DC_BANKRUPT) && Company::IsValidID(_current_company)) {
1829  if (ret.Failed()) return ret;
1830 
1831  /* The track was removed, and left a coast tile. Now also clear the water. */
1832  if (flags & DC_EXEC) DoClearSquare(tile);
1833  cost.AddCost(_price[PR_CLEAR_WATER]);
1834  }
1835 
1836  return cost;
1837  }
1838 
1839  case RAIL_TILE_DEPOT:
1840  return RemoveTrainDepot(tile, flags);
1841 
1842  default:
1843  return CMD_ERROR;
1844  }
1845 }
1846 
1851 static uint GetSaveSlopeZ(uint x, uint y, Track track)
1852 {
1853  switch (track) {
1854  case TRACK_UPPER: x &= ~0xF; y &= ~0xF; break;
1855  case TRACK_LOWER: x |= 0xF; y |= 0xF; break;
1856  case TRACK_LEFT: x |= 0xF; y &= ~0xF; break;
1857  case TRACK_RIGHT: x &= ~0xF; y |= 0xF; break;
1858  default: break;
1859  }
1860  return GetSlopePixelZ(x, y);
1861 }
1862 
1863 static void DrawSingleSignal(TileIndex tile, const RailtypeInfo *rti, Track track, SignalState condition, SignalOffsets image, uint pos)
1864 {
1865  bool side;
1867  case 0: side = false; break; // left
1868  case 2: side = true; break; // right
1869  default: side = _settings_game.vehicle.road_side != 0; break; // driving side
1870  }
1871  static const Point SignalPositions[2][12] = {
1872  { // Signals on the left side
1873  /* LEFT LEFT RIGHT RIGHT UPPER UPPER */
1874  { 8, 5}, {14, 1}, { 1, 14}, { 9, 11}, { 1, 0}, { 3, 10},
1875  /* LOWER LOWER X X Y Y */
1876  {11, 4}, {14, 14}, {11, 3}, { 4, 13}, { 3, 4}, {11, 13}
1877  }, { // Signals on the right side
1878  /* LEFT LEFT RIGHT RIGHT UPPER UPPER */
1879  {14, 1}, {12, 10}, { 4, 6}, { 1, 14}, {10, 4}, { 0, 1},
1880  /* LOWER LOWER X X Y Y */
1881  {14, 14}, { 5, 12}, {11, 13}, { 4, 3}, {13, 4}, { 3, 11}
1882  }
1883  };
1884 
1885  uint x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x;
1886  uint y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y;
1887 
1888  SignalType type = GetSignalType(tile, track);
1889  SignalVariant variant = GetSignalVariant(tile, track);
1890 
1891  SpriteID sprite = GetCustomSignalSprite(rti, tile, type, variant, condition);
1892  if (sprite != 0) {
1893  sprite += image;
1894  } else {
1895  /* Normal electric signals are stored in a different sprite block than all other signals. */
1896  sprite = (type == SIGTYPE_NORMAL && variant == SIG_ELECTRIC) ? SPR_ORIGINAL_SIGNALS_BASE : SPR_SIGNALS_BASE - 16;
1897  sprite += type * 16 + variant * 64 + image * 2 + condition + (type > SIGTYPE_LAST_NOPBS ? 64 : 0);
1898  }
1899 
1900  AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, GetSaveSlopeZ(x, y, track));
1901 }
1902 
1903 static uint32 _drawtile_track_palette;
1904 
1905 
1906 
1908 struct FenceOffset {
1910  int x_offs;
1911  int y_offs;
1912  int x_size;
1913  int y_size;
1914 };
1915 
1918  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_FLAT_X_NW
1919  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_FLAT_Y_NE
1920  { CORNER_W, 8, 8, 1, 1 }, // RFO_FLAT_LEFT
1921  { CORNER_N, 8, 8, 1, 1 }, // RFO_FLAT_UPPER
1922  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_SW_NW
1923  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_SE_NE
1924  { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_NE_NW
1925  { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_NW_NE
1926  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_FLAT_X_SE
1927  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_FLAT_Y_SW
1928  { CORNER_E, 8, 8, 1, 1 }, // RFO_FLAT_RIGHT
1929  { CORNER_S, 8, 8, 1, 1 }, // RFO_FLAT_LOWER
1930  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_SW_SE
1931  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_SE_SW
1932  { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_NE_SE
1933  { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_NW_SW
1934 };
1935 
1943 static void DrawTrackFence(const TileInfo *ti, SpriteID base_image, uint num_sprites, RailFenceOffset rfo)
1944 {
1945  int z = ti->z;
1946  if (_fence_offsets[rfo].height_ref != CORNER_INVALID) {
1947  z += GetSlopePixelZInCorner(RemoveHalftileSlope(ti->tileh), _fence_offsets[rfo].height_ref);
1948  }
1949  AddSortableSpriteToDraw(base_image + (rfo % num_sprites), _drawtile_track_palette,
1950  ti->x + _fence_offsets[rfo].x_offs,
1951  ti->y + _fence_offsets[rfo].y_offs,
1952  _fence_offsets[rfo].x_size,
1953  _fence_offsets[rfo].y_size,
1954  4, z);
1955 }
1956 
1960 static void DrawTrackFence_NW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1961 {
1963  if (ti->tileh & SLOPE_NW) rfo = (ti->tileh & SLOPE_W) ? RFO_SLOPE_SW_NW : RFO_SLOPE_NE_NW;
1964  DrawTrackFence(ti, base_image, num_sprites, rfo);
1965 }
1966 
1970 static void DrawTrackFence_SE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1971 {
1973  if (ti->tileh & SLOPE_SE) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SW_SE : RFO_SLOPE_NE_SE;
1974  DrawTrackFence(ti, base_image, num_sprites, rfo);
1975 }
1976 
1980 static void DrawTrackFence_NE(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1981 {
1983  if (ti->tileh & SLOPE_NE) rfo = (ti->tileh & SLOPE_E) ? RFO_SLOPE_SE_NE : RFO_SLOPE_NW_NE;
1984  DrawTrackFence(ti, base_image, num_sprites, rfo);
1985 }
1986 
1990 static void DrawTrackFence_SW(const TileInfo *ti, SpriteID base_image, uint num_sprites)
1991 {
1993  if (ti->tileh & SLOPE_SW) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SE_SW : RFO_SLOPE_NW_SW;
1994  DrawTrackFence(ti, base_image, num_sprites, rfo);
1995 }
1996 
2002 static void DrawTrackDetails(const TileInfo *ti, const RailtypeInfo *rti)
2003 {
2004  /* Base sprite for track fences.
2005  * Note: Halftile slopes only have fences on the upper part. */
2006  uint num_sprites = 0;
2007  SpriteID base_image = GetCustomRailSprite(rti, ti->tile, RTSG_FENCES, IsHalftileSlope(ti->tileh) ? TCX_UPPER_HALFTILE : TCX_NORMAL, &num_sprites);
2008  if (base_image == 0) {
2009  base_image = SPR_TRACK_FENCE_FLAT_X;
2010  num_sprites = 8;
2011  }
2012 
2013  assert(num_sprites > 0);
2014 
2015  switch (GetRailGroundType(ti->tile)) {
2016  case RAIL_GROUND_FENCE_NW: DrawTrackFence_NW(ti, base_image, num_sprites); break;
2017  case RAIL_GROUND_FENCE_SE: DrawTrackFence_SE(ti, base_image, num_sprites); break;
2018  case RAIL_GROUND_FENCE_SENW: DrawTrackFence_NW(ti, base_image, num_sprites);
2019  DrawTrackFence_SE(ti, base_image, num_sprites); break;
2020  case RAIL_GROUND_FENCE_NE: DrawTrackFence_NE(ti, base_image, num_sprites); break;
2021  case RAIL_GROUND_FENCE_SW: DrawTrackFence_SW(ti, base_image, num_sprites); break;
2022  case RAIL_GROUND_FENCE_NESW: DrawTrackFence_NE(ti, base_image, num_sprites);
2023  DrawTrackFence_SW(ti, base_image, num_sprites); break;
2024  case RAIL_GROUND_FENCE_VERT1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break;
2025  case RAIL_GROUND_FENCE_VERT2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break;
2026  case RAIL_GROUND_FENCE_HORIZ1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break;
2027  case RAIL_GROUND_FENCE_HORIZ2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break;
2028  case RAIL_GROUND_WATER: {
2029  Corner track_corner;
2030  if (IsHalftileSlope(ti->tileh)) {
2031  /* Steep slope or one-corner-raised slope with halftile foundation */
2032  track_corner = GetHalftileSlopeCorner(ti->tileh);
2033  } else {
2034  /* Three-corner-raised slope */
2036  }
2037  switch (track_corner) {
2038  case CORNER_W: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break;
2039  case CORNER_S: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break;
2040  case CORNER_E: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break;
2041  case CORNER_N: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break;
2042  default: NOT_REACHED();
2043  }
2044  break;
2045  }
2046  default: break;
2047  }
2048 }
2049 
2050 /* SubSprite for drawing the track halftile of 'three-corners-raised'-sloped rail sprites. */
2051 static const int INF = 1000; // big number compared to tilesprite size
2052 static const SubSprite _halftile_sub_sprite[4] = {
2053  { -INF , -INF , 32 - 33, INF }, // CORNER_W, clip 33 pixels from right
2054  { -INF , 0 + 7, INF , INF }, // CORNER_S, clip 7 pixels from top
2055  { -31 + 33, -INF , INF , INF }, // CORNER_E, clip 33 pixels from left
2056  { -INF , -INF , INF , 30 - 23 } // CORNER_N, clip 23 pixels from bottom
2057 };
2058 
2059 static inline void DrawTrackSprite(SpriteID sprite, PaletteID pal, const TileInfo *ti, Slope s)
2060 {
2061  DrawGroundSprite(sprite, pal, NULL, 0, (ti->tileh & s) ? -8 : 0);
2062 }
2063 
2064 static void DrawTrackBitsOverlay(TileInfo *ti, TrackBits track, const RailtypeInfo *rti)
2065 {
2066  RailGroundType rgt = GetRailGroundType(ti->tile);
2067  Foundation f = GetRailFoundation(ti->tileh, track);
2068  Corner halftile_corner = CORNER_INVALID;
2069 
2070  if (IsNonContinuousFoundation(f)) {
2071  /* Save halftile corner */
2073  /* Draw lower part first */
2074  track &= ~CornerToTrackBits(halftile_corner);
2076  }
2077 
2078  DrawFoundation(ti, f);
2079  /* DrawFoundation modifies ti */
2080 
2081  /* Draw ground */
2082  if (rgt == RAIL_GROUND_WATER) {
2083  if (track != TRACK_BIT_NONE || IsSteepSlope(ti->tileh)) {
2084  /* three-corner-raised slope or steep slope with track on upper part */
2085  DrawShoreTile(ti->tileh);
2086  } else {
2087  /* single-corner-raised slope with track on upper part */
2088  DrawGroundSprite(SPR_FLAT_WATER_TILE, PAL_NONE);
2089  }
2090  } else {
2091  SpriteID image;
2092 
2093  switch (rgt) {
2094  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2095  case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2096  default: image = SPR_FLAT_GRASS_TILE; break;
2097  }
2098 
2099  image += SlopeToSpriteOffset(ti->tileh);
2100 
2101  DrawGroundSprite(image, PAL_NONE);
2102  }
2103 
2104  SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2105  SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2107 
2108  if (track == TRACK_BIT_NONE) {
2109  /* Half-tile foundation, no track here? */
2110  } else if (ti->tileh == SLOPE_NW && track == TRACK_BIT_Y) {
2111  DrawGroundSprite(ground + RTO_SLOPE_NW, PAL_NONE);
2113  } else if (ti->tileh == SLOPE_NE && track == TRACK_BIT_X) {
2114  DrawGroundSprite(ground + RTO_SLOPE_NE, PAL_NONE);
2116  } else if (ti->tileh == SLOPE_SE && track == TRACK_BIT_Y) {
2117  DrawGroundSprite(ground + RTO_SLOPE_SE, PAL_NONE);
2119  } else if (ti->tileh == SLOPE_SW && track == TRACK_BIT_X) {
2120  DrawGroundSprite(ground + RTO_SLOPE_SW, PAL_NONE);
2122  } else {
2123  switch (track) {
2124  /* Draw single ground sprite when not overlapping. No track overlay
2125  * is necessary for these sprites. */
2126  case TRACK_BIT_X: DrawGroundSprite(ground + RTO_X, PAL_NONE); break;
2127  case TRACK_BIT_Y: DrawGroundSprite(ground + RTO_Y, PAL_NONE); break;
2128  case TRACK_BIT_UPPER: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N); break;
2129  case TRACK_BIT_LOWER: DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break;
2130  case TRACK_BIT_RIGHT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E); break;
2131  case TRACK_BIT_LEFT: DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break;
2132  case TRACK_BIT_CROSS: DrawGroundSprite(ground + RTO_CROSSING_XY, PAL_NONE); break;
2133  case TRACK_BIT_HORZ: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N);
2134  DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break;
2135  case TRACK_BIT_VERT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E);
2136  DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break;
2137 
2138  default:
2139  /* We're drawing a junction tile */
2140  if ((track & TRACK_BIT_3WAY_NE) == 0) {
2141  DrawGroundSprite(ground + RTO_JUNCTION_SW, PAL_NONE);
2142  } else if ((track & TRACK_BIT_3WAY_SW) == 0) {
2143  DrawGroundSprite(ground + RTO_JUNCTION_NE, PAL_NONE);
2144  } else if ((track & TRACK_BIT_3WAY_NW) == 0) {
2145  DrawGroundSprite(ground + RTO_JUNCTION_SE, PAL_NONE);
2146  } else if ((track & TRACK_BIT_3WAY_SE) == 0) {
2147  DrawGroundSprite(ground + RTO_JUNCTION_NW, PAL_NONE);
2148  } else {
2149  DrawGroundSprite(ground + RTO_JUNCTION_NSEW, PAL_NONE);
2150  }
2151 
2152  /* Mask out PBS bits as we shall draw them afterwards anyway. */
2153  track &= ~pbs;
2154 
2155  /* Draw regular track bits */
2156  if (track & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PAL_NONE);
2157  if (track & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PAL_NONE);
2158  if (track & TRACK_BIT_UPPER) DrawGroundSprite(overlay + RTO_N, PAL_NONE);
2159  if (track & TRACK_BIT_LOWER) DrawGroundSprite(overlay + RTO_S, PAL_NONE);
2160  if (track & TRACK_BIT_RIGHT) DrawGroundSprite(overlay + RTO_E, PAL_NONE);
2161  if (track & TRACK_BIT_LEFT) DrawGroundSprite(overlay + RTO_W, PAL_NONE);
2162  }
2163 
2164  /* Draw reserved track bits */
2165  if (pbs & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH);
2166  if (pbs & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH);
2167  if (pbs & TRACK_BIT_UPPER) DrawTrackSprite(overlay + RTO_N, PALETTE_CRASH, ti, SLOPE_N);
2168  if (pbs & TRACK_BIT_LOWER) DrawTrackSprite(overlay + RTO_S, PALETTE_CRASH, ti, SLOPE_S);
2169  if (pbs & TRACK_BIT_RIGHT) DrawTrackSprite(overlay + RTO_E, PALETTE_CRASH, ti, SLOPE_E);
2170  if (pbs & TRACK_BIT_LEFT) DrawTrackSprite(overlay + RTO_W, PALETTE_CRASH, ti, SLOPE_W);
2171  }
2172 
2173  if (IsValidCorner(halftile_corner)) {
2174  DrawFoundation(ti, HalftileFoundation(halftile_corner));
2177 
2178  /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */
2179  Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
2180 
2181  SpriteID image;
2182  switch (rgt) {
2183  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2185  case RAIL_GROUND_HALF_SNOW: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2186  default: image = SPR_FLAT_GRASS_TILE; break;
2187  }
2188 
2189  image += SlopeToSpriteOffset(fake_slope);
2190 
2191  DrawGroundSprite(image, PAL_NONE, &(_halftile_sub_sprite[halftile_corner]));
2192 
2193  track = CornerToTrackBits(halftile_corner);
2194 
2195  int offset;
2196  switch (track) {
2197  default: NOT_REACHED();
2198  case TRACK_BIT_UPPER: offset = RTO_N; break;
2199  case TRACK_BIT_LOWER: offset = RTO_S; break;
2200  case TRACK_BIT_RIGHT: offset = RTO_E; break;
2201  case TRACK_BIT_LEFT: offset = RTO_W; break;
2202  }
2203 
2204  DrawTrackSprite(ground + offset, PAL_NONE, ti, fake_slope);
2206  DrawTrackSprite(overlay + offset, PALETTE_CRASH, ti, fake_slope);
2207  }
2208  }
2209 }
2210 
2216 static void DrawTrackBits(TileInfo *ti, TrackBits track)
2217 {
2218  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2219 
2220  if (rti->UsesOverlay()) {
2221  DrawTrackBitsOverlay(ti, track, rti);
2222  return;
2223  }
2224 
2225  RailGroundType rgt = GetRailGroundType(ti->tile);
2226  Foundation f = GetRailFoundation(ti->tileh, track);
2227  Corner halftile_corner = CORNER_INVALID;
2228 
2229  if (IsNonContinuousFoundation(f)) {
2230  /* Save halftile corner */
2232  /* Draw lower part first */
2233  track &= ~CornerToTrackBits(halftile_corner);
2235  }
2236 
2237  DrawFoundation(ti, f);
2238  /* DrawFoundation modifies ti */
2239 
2240  SpriteID image;
2241  PaletteID pal = PAL_NONE;
2242  const SubSprite *sub = NULL;
2243  bool junction = false;
2244 
2245  /* Select the sprite to use. */
2246  if (track == 0) {
2247  /* Clear ground (only track on halftile foundation) */
2248  if (rgt == RAIL_GROUND_WATER) {
2249  if (IsSteepSlope(ti->tileh)) {
2250  DrawShoreTile(ti->tileh);
2251  image = 0;
2252  } else {
2253  image = SPR_FLAT_WATER_TILE;
2254  }
2255  } else {
2256  switch (rgt) {
2257  case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break;
2258  case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break;
2259  default: image = SPR_FLAT_GRASS_TILE; break;
2260  }
2261  image += SlopeToSpriteOffset(ti->tileh);
2262  }
2263  } else {
2264  if (ti->tileh != SLOPE_FLAT) {
2265  /* track on non-flat ground */
2266  image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y;
2267  } else {
2268  /* track on flat ground */
2269  (image = rti->base_sprites.track_y, track == TRACK_BIT_Y) ||
2270  (image++, track == TRACK_BIT_X) ||
2271  (image++, track == TRACK_BIT_UPPER) ||
2272  (image++, track == TRACK_BIT_LOWER) ||
2273  (image++, track == TRACK_BIT_RIGHT) ||
2274  (image++, track == TRACK_BIT_LEFT) ||
2275  (image++, track == TRACK_BIT_CROSS) ||
2276 
2277  (image = rti->base_sprites.track_ns, track == TRACK_BIT_HORZ) ||
2278  (image++, track == TRACK_BIT_VERT) ||
2279 
2280  (junction = true, false) ||
2281  (image = rti->base_sprites.ground, (track & TRACK_BIT_3WAY_NE) == 0) ||
2282  (image++, (track & TRACK_BIT_3WAY_SW) == 0) ||
2283  (image++, (track & TRACK_BIT_3WAY_NW) == 0) ||
2284  (image++, (track & TRACK_BIT_3WAY_SE) == 0) ||
2285  (image++, true);
2286  }
2287 
2288  switch (rgt) {
2289  case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break;
2290  case RAIL_GROUND_ICE_DESERT: image += rti->snow_offset; break;
2291  case RAIL_GROUND_WATER: {
2292  /* three-corner-raised slope */
2293  DrawShoreTile(ti->tileh);
2295  sub = &(_halftile_sub_sprite[track_corner]);
2296  break;
2297  }
2298  default: break;
2299  }
2300  }
2301 
2302  if (image != 0) DrawGroundSprite(image, pal, sub);
2303 
2304  /* Draw track pieces individually for junction tiles */
2305  if (junction) {
2306  if (track & TRACK_BIT_X) DrawGroundSprite(rti->base_sprites.single_x, PAL_NONE);
2307  if (track & TRACK_BIT_Y) DrawGroundSprite(rti->base_sprites.single_y, PAL_NONE);
2308  if (track & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PAL_NONE);
2309  if (track & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PAL_NONE);
2310  if (track & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PAL_NONE);
2311  if (track & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PAL_NONE);
2312  }
2313 
2314  /* PBS debugging, draw reserved tracks darker */
2315  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation) {
2316  /* Get reservation, but mask track on halftile slope */
2317  TrackBits pbs = GetRailReservationTrackBits(ti->tile) & track;
2318  if (pbs & TRACK_BIT_X) {
2319  if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) {
2321  } else {
2322  DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH);
2323  }
2324  }
2325  if (pbs & TRACK_BIT_Y) {
2326  if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) {
2328  } else {
2329  DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH);
2330  }
2331  }
2332  if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_N ? -(int)TILE_HEIGHT : 0);
2333  if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_S ? -(int)TILE_HEIGHT : 0);
2334  if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_W ? -(int)TILE_HEIGHT : 0);
2335  if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PALETTE_CRASH, NULL, 0, ti->tileh & SLOPE_E ? -(int)TILE_HEIGHT : 0);
2336  }
2337 
2338  if (IsValidCorner(halftile_corner)) {
2339  DrawFoundation(ti, HalftileFoundation(halftile_corner));
2340 
2341  /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */
2342  Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
2343  image = _track_sloped_sprites[fake_slope - 1] + rti->base_sprites.track_y;
2344  pal = PAL_NONE;
2345  switch (rgt) {
2346  case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break;
2348  case RAIL_GROUND_HALF_SNOW: image += rti->snow_offset; break; // higher part has snow in this case too
2349  default: break;
2350  }
2351  DrawGroundSprite(image, pal, &(_halftile_sub_sprite[halftile_corner]));
2352 
2353  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasReservedTracks(ti->tile, CornerToTrackBits(halftile_corner))) {
2354  static const byte _corner_to_track_sprite[] = {3, 1, 2, 0};
2355  DrawGroundSprite(_corner_to_track_sprite[halftile_corner] + rti->base_sprites.single_n, PALETTE_CRASH, NULL, 0, -(int)TILE_HEIGHT);
2356  }
2357  }
2358 }
2359 
2360 static void DrawSignals(TileIndex tile, TrackBits rails, const RailtypeInfo *rti)
2361 {
2362 #define MAYBE_DRAW_SIGNAL(x, y, z, t) if (IsSignalPresent(tile, x)) DrawSingleSignal(tile, rti, t, GetSingleSignalState(tile, x), y, z)
2363 
2364  if (!(rails & TRACK_BIT_Y)) {
2365  if (!(rails & TRACK_BIT_X)) {
2366  if (rails & TRACK_BIT_LEFT) {
2367  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTH, 0, TRACK_LEFT);
2368  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTH, 1, TRACK_LEFT);
2369  }
2370  if (rails & TRACK_BIT_RIGHT) {
2371  MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_NORTH, 2, TRACK_RIGHT);
2372  MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_SOUTH, 3, TRACK_RIGHT);
2373  }
2374  if (rails & TRACK_BIT_UPPER) {
2375  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_WEST, 4, TRACK_UPPER);
2376  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_EAST, 5, TRACK_UPPER);
2377  }
2378  if (rails & TRACK_BIT_LOWER) {
2379  MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_WEST, 6, TRACK_LOWER);
2380  MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_EAST, 7, TRACK_LOWER);
2381  }
2382  } else {
2383  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHWEST, 8, TRACK_X);
2384  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHEAST, 9, TRACK_X);
2385  }
2386  } else {
2387  MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHEAST, 10, TRACK_Y);
2388  MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHWEST, 11, TRACK_Y);
2389  }
2390 }
2391 
2392 static void DrawTile_Track(TileInfo *ti)
2393 {
2394  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
2395 
2396  _drawtile_track_palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
2397 
2398  if (IsPlainRail(ti->tile)) {
2399  TrackBits rails = GetTrackBits(ti->tile);
2400 
2401  DrawTrackBits(ti, rails);
2402 
2404 
2406 
2407  if (HasSignals(ti->tile)) DrawSignals(ti->tile, rails, rti);
2408  } else {
2409  /* draw depot */
2410  const DrawTileSprites *dts;
2411  PaletteID pal = PAL_NONE;
2412  SpriteID relocation;
2413 
2415 
2417  /* Draw rail instead of depot */
2418  dts = &_depot_invisible_gfx_table[GetRailDepotDirection(ti->tile)];
2419  } else {
2420  dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)];
2421  }
2422 
2423  SpriteID image;
2424  if (rti->UsesOverlay()) {
2425  image = SPR_FLAT_GRASS_TILE;
2426  } else {
2427  image = dts->ground.sprite;
2428  if (image != SPR_FLAT_GRASS_TILE) image += rti->GetRailtypeSpriteOffset();
2429  }
2430 
2431  /* adjust ground tile for desert
2432  * don't adjust for snow, because snow in depots looks weird */
2433  if (IsSnowRailGround(ti->tile) && _settings_game.game_creation.landscape == LT_TROPIC) {
2434  if (image != SPR_FLAT_GRASS_TILE) {
2435  image += rti->snow_offset; // tile with tracks
2436  } else {
2437  image = SPR_FLAT_SNOW_DESERT_TILE; // flat ground
2438  }
2439  }
2440 
2441  DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, _drawtile_track_palette));
2442 
2443  if (rti->UsesOverlay()) {
2444  SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
2445 
2446  switch (GetRailDepotDirection(ti->tile)) {
2447  case DIAGDIR_NE:
2448  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2449  FALLTHROUGH;
2450  case DIAGDIR_SW:
2451  DrawGroundSprite(ground + RTO_X, PAL_NONE);
2452  break;
2453  case DIAGDIR_NW:
2454  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2455  FALLTHROUGH;
2456  case DIAGDIR_SE:
2457  DrawGroundSprite(ground + RTO_Y, PAL_NONE);
2458  break;
2459  default:
2460  break;
2461  }
2462 
2464  SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
2465 
2466  switch (GetRailDepotDirection(ti->tile)) {
2467  case DIAGDIR_NE:
2468  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2469  FALLTHROUGH;
2470  case DIAGDIR_SW:
2471  DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH);
2472  break;
2473  case DIAGDIR_NW:
2474  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2475  FALLTHROUGH;
2476  case DIAGDIR_SE:
2477  DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH);
2478  break;
2479  default:
2480  break;
2481  }
2482  }
2483  } else {
2484  /* PBS debugging, draw reserved tracks darker */
2485  if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasDepotReservation(ti->tile)) {
2486  switch (GetRailDepotDirection(ti->tile)) {
2487  case DIAGDIR_NE:
2488  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2489  FALLTHROUGH;
2490  case DIAGDIR_SW:
2492  break;
2493  case DIAGDIR_NW:
2494  if (!IsInvisibilitySet(TO_BUILDINGS)) break;
2495  FALLTHROUGH;
2496  case DIAGDIR_SE:
2498  break;
2499  default:
2500  break;
2501  }
2502  }
2503  }
2504  int depot_sprite = GetCustomRailSprite(rti, ti->tile, RTSG_DEPOT);
2505  relocation = depot_sprite != 0 ? depot_sprite - SPR_RAIL_DEPOT_SE_1 : rti->GetRailtypeSpriteOffset();
2506 
2508 
2509  DrawRailTileSeq(ti, dts, TO_BUILDINGS, relocation, 0, _drawtile_track_palette);
2510  }
2511  DrawBridgeMiddle(ti);
2512 }
2513 
2514 void DrawTrainDepotSprite(int x, int y, int dir, RailType railtype)
2515 {
2516  const DrawTileSprites *dts = &_depot_gfx_table[dir];
2517  const RailtypeInfo *rti = GetRailTypeInfo(railtype);
2518  SpriteID image = rti->UsesOverlay() ? SPR_FLAT_GRASS_TILE : dts->ground.sprite;
2519  uint32 offset = rti->GetRailtypeSpriteOffset();
2520 
2521  if (image != SPR_FLAT_GRASS_TILE) image += offset;
2522  PaletteID palette = COMPANY_SPRITE_COLOUR(_local_company);
2523 
2524  DrawSprite(image, PAL_NONE, x, y);
2525 
2526  if (rti->UsesOverlay()) {
2528 
2529  switch (dir) {
2530  case DIAGDIR_SW: DrawSprite(ground + RTO_X, PAL_NONE, x, y); break;
2531  case DIAGDIR_SE: DrawSprite(ground + RTO_Y, PAL_NONE, x, y); break;
2532  default: break;
2533  }
2534  }
2535  int depot_sprite = GetCustomRailSprite(rti, INVALID_TILE, RTSG_DEPOT);
2536  if (depot_sprite != 0) offset = depot_sprite - SPR_RAIL_DEPOT_SE_1;
2537 
2538  DrawRailTileSeqInGUI(x, y, dts, offset, 0, palette);
2539 }
2540 
2541 static int GetSlopePixelZ_Track(TileIndex tile, uint x, uint y)
2542 {
2543  if (IsPlainRail(tile)) {
2544  int z;
2545  Slope tileh = GetTilePixelSlope(tile, &z);
2546  if (tileh == SLOPE_FLAT) return z;
2547 
2548  z += ApplyPixelFoundationToSlope(GetRailFoundation(tileh, GetTrackBits(tile)), &tileh);
2549  return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh);
2550  } else {
2551  return GetTileMaxPixelZ(tile);
2552  }
2553 }
2554 
2555 static Foundation GetFoundation_Track(TileIndex tile, Slope tileh)
2556 {
2557  return IsPlainRail(tile) ? GetRailFoundation(tileh, GetTrackBits(tile)) : FlatteningFoundation(tileh);
2558 }
2559 
2560 static void TileLoop_Track(TileIndex tile)
2561 {
2562  RailGroundType old_ground = GetRailGroundType(tile);
2563  RailGroundType new_ground;
2564 
2565  if (old_ground == RAIL_GROUND_WATER) {
2566  TileLoop_Water(tile);
2567  return;
2568  }
2569 
2571  case LT_ARCTIC: {
2572  int z;
2573  Slope slope = GetTileSlope(tile, &z);
2574  bool half = false;
2575 
2576  /* for non-flat track, use lower part of track
2577  * in other cases, use the highest part with track */
2578  if (IsPlainRail(tile)) {
2579  TrackBits track = GetTrackBits(tile);
2580  Foundation f = GetRailFoundation(slope, track);
2581 
2582  switch (f) {
2583  case FOUNDATION_NONE:
2584  /* no foundation - is the track on the upper side of three corners raised tile? */
2585  if (IsSlopeWithThreeCornersRaised(slope)) z++;
2586  break;
2587 
2588  case FOUNDATION_INCLINED_X:
2589  case FOUNDATION_INCLINED_Y:
2590  /* sloped track - is it on a steep slope? */
2591  if (IsSteepSlope(slope)) z++;
2592  break;
2593 
2595  /* only lower part of steep slope */
2596  z++;
2597  break;
2598 
2599  default:
2600  /* if it is a steep slope, then there is a track on higher part */
2601  if (IsSteepSlope(slope)) z++;
2602  z++;
2603  break;
2604  }
2605 
2607  } else {
2608  /* is the depot on a non-flat tile? */
2609  if (slope != SLOPE_FLAT) z++;
2610  }
2611 
2612  /* 'z' is now the lowest part of the highest track bit -
2613  * for sloped track, it is 'z' of lower part
2614  * for two track bits, it is 'z' of higher track bit
2615  * For non-continuous foundations (and STEEP_BOTH), 'half' is set */
2616  if (z > GetSnowLine()) {
2617  if (half && z - GetSnowLine() == 1) {
2618  /* track on non-continuous foundation, lower part is not under snow */
2619  new_ground = RAIL_GROUND_HALF_SNOW;
2620  } else {
2621  new_ground = RAIL_GROUND_ICE_DESERT;
2622  }
2623  goto set_ground;
2624  }
2625  break;
2626  }
2627 
2628  case LT_TROPIC:
2629  if (GetTropicZone(tile) == TROPICZONE_DESERT) {
2630  new_ground = RAIL_GROUND_ICE_DESERT;
2631  goto set_ground;
2632  }
2633  break;
2634  }
2635 
2636  new_ground = RAIL_GROUND_GRASS;
2637 
2638  if (IsPlainRail(tile) && old_ground != RAIL_GROUND_BARREN) { // wait until bottom is green
2639  /* determine direction of fence */
2640  TrackBits rail = GetTrackBits(tile);
2641 
2642  Owner owner = GetTileOwner(tile);
2643  byte fences = 0;
2644 
2645  for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
2647 
2648  /* Track bit on this edge => no fence. */
2649  if ((rail & dir_to_trackbits[d]) != TRACK_BIT_NONE) continue;
2650 
2651  TileIndex tile2 = tile + TileOffsByDiagDir(d);
2652 
2653  /* Show fences if it's a house, industry, object, road, tunnelbridge or not owned by us. */
2654  if (!IsValidTile(tile2) || IsTileType(tile2, MP_HOUSE) || IsTileType(tile2, MP_INDUSTRY) ||
2655  IsTileType(tile2, MP_ROAD) || (IsTileType(tile2, MP_OBJECT) && !IsObjectType(tile2, OBJECT_OWNED_LAND)) || IsTileType(tile2, MP_TUNNELBRIDGE) || !IsTileOwner(tile2, owner)) {
2656  fences |= 1 << d;
2657  }
2658  }
2659 
2660  switch (fences) {
2661  case 0: break;
2662  case (1 << DIAGDIR_NE): new_ground = RAIL_GROUND_FENCE_NE; break;
2663  case (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_SE; break;
2664  case (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_SW; break;
2665  case (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_NW; break;
2666  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_NESW; break;
2667  case (1 << DIAGDIR_SE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_SENW; break;
2668  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_VERT1; break;
2669  case (1 << DIAGDIR_NE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_HORIZ2; break;
2670  case (1 << DIAGDIR_SE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_HORIZ1; break;
2671  case (1 << DIAGDIR_SW) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_VERT2; break;
2672  default: NOT_REACHED();
2673  }
2674  }
2675 
2676 set_ground:
2677  if (old_ground != new_ground) {
2678  SetRailGroundType(tile, new_ground);
2679  MarkTileDirtyByTile(tile);
2680  }
2681 }
2682 
2683 
2684 static TrackStatus GetTileTrackStatus_Track(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
2685 {
2686  /* Case of half tile slope with water. */
2687  if (mode == TRANSPORT_WATER && IsPlainRail(tile) && GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(GetTileSlope(tile))) {
2688  TrackBits tb = GetTrackBits(tile);
2689  switch (tb) {
2690  default: NOT_REACHED();
2691  case TRACK_BIT_UPPER: tb = TRACK_BIT_LOWER; break;
2692  case TRACK_BIT_LOWER: tb = TRACK_BIT_UPPER; break;
2693  case TRACK_BIT_LEFT: tb = TRACK_BIT_RIGHT; break;
2694  case TRACK_BIT_RIGHT: tb = TRACK_BIT_LEFT; break;
2695  }
2697  }
2698 
2699  if (mode != TRANSPORT_RAIL) return 0;
2700 
2701  TrackBits trackbits = TRACK_BIT_NONE;
2702  TrackdirBits red_signals = TRACKDIR_BIT_NONE;
2703 
2704  switch (GetRailTileType(tile)) {
2705  default: NOT_REACHED();
2706  case RAIL_TILE_NORMAL:
2707  trackbits = GetTrackBits(tile);
2708  break;
2709 
2710  case RAIL_TILE_SIGNALS: {
2711  trackbits = GetTrackBits(tile);
2712  byte a = GetPresentSignals(tile);
2713  uint b = GetSignalStates(tile);
2714 
2715  b &= a;
2716 
2717  /* When signals are not present (in neither direction),
2718  * we pretend them to be green. Otherwise, it depends on
2719  * the signal type. For signals that are only active from
2720  * one side, we set the missing signals explicitly to
2721  * `green'. Otherwise, they implicitly become `red'. */
2722  if (!IsOnewaySignal(tile, TRACK_UPPER) || (a & SignalOnTrack(TRACK_UPPER)) == 0) b |= ~a & SignalOnTrack(TRACK_UPPER);
2723  if (!IsOnewaySignal(tile, TRACK_LOWER) || (a & SignalOnTrack(TRACK_LOWER)) == 0) b |= ~a & SignalOnTrack(TRACK_LOWER);
2724 
2725  if ((b & 0x8) == 0) red_signals |= (TRACKDIR_BIT_LEFT_N | TRACKDIR_BIT_X_NE | TRACKDIR_BIT_Y_SE | TRACKDIR_BIT_UPPER_E);
2726  if ((b & 0x4) == 0) red_signals |= (TRACKDIR_BIT_LEFT_S | TRACKDIR_BIT_X_SW | TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_UPPER_W);
2727  if ((b & 0x2) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_LOWER_E);
2728  if ((b & 0x1) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_S | TRACKDIR_BIT_LOWER_W);
2729 
2730  break;
2731  }
2732 
2733  case RAIL_TILE_DEPOT: {
2735 
2736  if (side != INVALID_DIAGDIR && side != dir) break;
2737 
2738  trackbits = DiagDirToDiagTrackBits(dir);
2739  break;
2740  }
2741  }
2742 
2743  return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), red_signals);
2744 }
2745 
2746 static bool ClickTile_Track(TileIndex tile)
2747 {
2748  if (!IsRailDepot(tile)) return false;
2749 
2750  ShowDepotWindow(tile, VEH_TRAIN);
2751  return true;
2752 }
2753 
2754 static void GetTileDesc_Track(TileIndex tile, TileDesc *td)
2755 {
2756  const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
2757  td->rail_speed = rti->max_speed;
2758  td->railtype = rti->strings.name;
2759  td->owner[0] = GetTileOwner(tile);
2760  switch (GetRailTileType(tile)) {
2761  case RAIL_TILE_NORMAL:
2762  td->str = STR_LAI_RAIL_DESCRIPTION_TRACK;
2763  break;
2764 
2765  case RAIL_TILE_SIGNALS: {
2766  static const StringID signal_type[6][6] = {
2767  {
2768  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_SIGNALS,
2769  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS,
2770  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS,
2771  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS,
2772  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS,
2773  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS
2774  },
2775  {
2776  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS,
2777  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRESIGNALS,
2778  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS,
2779  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS,
2780  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS,
2781  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS
2782  },
2783  {
2784  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS,
2785  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS,
2786  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXITSIGNALS,
2787  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS,
2788  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS,
2789  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS
2790  },
2791  {
2792  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS,
2793  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS,
2794  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS,
2795  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBOSIGNALS,
2796  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS,
2797  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS
2798  },
2799  {
2800  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS,
2801  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS,
2802  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS,
2803  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS,
2804  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBSSIGNALS,
2805  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS
2806  },
2807  {
2808  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS,
2809  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS,
2810  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS,
2811  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS,
2812  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS,
2813  STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRYSIGNALS
2814  }
2815  };
2816 
2817  SignalType primary_signal;
2818  SignalType secondary_signal;
2819  if (HasSignalOnTrack(tile, TRACK_UPPER)) {
2820  primary_signal = GetSignalType(tile, TRACK_UPPER);
2821  secondary_signal = HasSignalOnTrack(tile, TRACK_LOWER) ? GetSignalType(tile, TRACK_LOWER) : primary_signal;
2822  } else {
2823  secondary_signal = primary_signal = GetSignalType(tile, TRACK_LOWER);
2824  }
2825 
2826  td->str = signal_type[secondary_signal][primary_signal];
2827  break;
2828  }
2829 
2830  case RAIL_TILE_DEPOT:
2831  td->str = STR_LAI_RAIL_DESCRIPTION_TRAIN_DEPOT;
2832  if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) {
2833  if (td->rail_speed > 0) {
2834  td->rail_speed = min(td->rail_speed, 61);
2835  } else {
2836  td->rail_speed = 61;
2837  }
2838  }
2839  td->build_date = Depot::GetByTile(tile)->build_date;
2840  break;
2841 
2842  default:
2843  NOT_REACHED();
2844  }
2845 }
2846 
2847 static void ChangeTileOwner_Track(TileIndex tile, Owner old_owner, Owner new_owner)
2848 {
2849  if (!IsTileOwner(tile, old_owner)) return;
2850 
2851  if (new_owner != INVALID_OWNER) {
2852  /* Update company infrastructure counts. No need to dirty windows here, we'll redraw the whole screen anyway. */
2853  uint num_pieces = 1;
2854  if (IsPlainRail(tile)) {
2855  TrackBits bits = GetTrackBits(tile);
2856  num_pieces = CountBits(bits);
2857  if (TracksOverlap(bits)) num_pieces *= num_pieces;
2858  }
2859  RailType rt = GetRailType(tile);
2860  Company::Get(old_owner)->infrastructure.rail[rt] -= num_pieces;
2861  Company::Get(new_owner)->infrastructure.rail[rt] += num_pieces;
2862 
2863  if (HasSignals(tile)) {
2864  uint num_sigs = CountBits(GetPresentSignals(tile));
2865  Company::Get(old_owner)->infrastructure.signal -= num_sigs;
2866  Company::Get(new_owner)->infrastructure.signal += num_sigs;
2867  }
2868 
2869  SetTileOwner(tile, new_owner);
2870  } else {
2872  }
2873 }
2874 
2875 static const byte _fractcoords_behind[4] = { 0x8F, 0x8, 0x80, 0xF8 };
2876 static const byte _fractcoords_enter[4] = { 0x8A, 0x48, 0x84, 0xA8 };
2877 static const int8 _deltacoord_leaveoffset[8] = {
2878  -1, 0, 1, 0, /* x */
2879  0, 1, 0, -1 /* y */
2880 };
2881 
2882 
2890 {
2892  int length = v->CalcNextVehicleOffset();
2893 
2894  switch (dir) {
2895  case DIAGDIR_NE: return ((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) - (length + 1)));
2896  case DIAGDIR_SE: return -((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) + (length + 1)));
2897  case DIAGDIR_SW: return -((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) + (length + 1)));
2898  default:
2899  case DIAGDIR_NW: return ((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) - (length + 1)));
2900  }
2901 
2902  return 0; // make compilers happy
2903 }
2904 
2910 {
2911  /* this routine applies only to trains in depot tiles */
2912  if (u->type != VEH_TRAIN || !IsRailDepotTile(tile)) return VETSB_CONTINUE;
2913 
2914  Train *v = Train::From(u);
2915 
2916  /* depot direction */
2918 
2919  /* Calculate the point where the following wagon should be activated. */
2920  int length = v->CalcNextVehicleOffset();
2921 
2922  byte fract_coord_leave =
2923  ((_fractcoords_enter[dir] & 0x0F) + // x
2924  (length + 1) * _deltacoord_leaveoffset[dir]) +
2925  (((_fractcoords_enter[dir] >> 4) + // y
2926  ((length + 1) * _deltacoord_leaveoffset[dir + 4])) << 4);
2927 
2928  byte fract_coord = (x & 0xF) + ((y & 0xF) << 4);
2929 
2930  if (_fractcoords_behind[dir] == fract_coord) {
2931  /* make sure a train is not entering the tile from behind */
2932  return VETSB_CANNOT_ENTER;
2933  } else if (_fractcoords_enter[dir] == fract_coord) {
2934  if (DiagDirToDir(ReverseDiagDir(dir)) == v->direction) {
2935  /* enter the depot */
2936  v->track = TRACK_BIT_DEPOT,
2937  v->vehstatus |= VS_HIDDEN; // hide it
2938  v->direction = ReverseDir(v->direction);
2939  if (v->Next() == NULL) VehicleEnterDepot(v->First());
2940  v->tile = tile;
2941 
2943  return VETSB_ENTERED_WORMHOLE;
2944  }
2945  } else if (fract_coord_leave == fract_coord) {
2946  if (DiagDirToDir(dir) == v->direction) {
2947  /* leave the depot? */
2948  if ((v = v->Next()) != NULL) {
2949  v->vehstatus &= ~VS_HIDDEN;
2950  v->track = (DiagDirToAxis(dir) == AXIS_X ? TRACK_BIT_X : TRACK_BIT_Y);
2951  }
2952  }
2953  }
2954 
2955  return VETSB_CONTINUE;
2956 }
2957 
2969 static CommandCost TestAutoslopeOnRailTile(TileIndex tile, uint flags, int z_old, Slope tileh_old, int z_new, Slope tileh_new, TrackBits rail_bits)
2970 {
2971  if (!_settings_game.construction.build_on_slopes || !AutoslopeEnabled()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2972 
2973  /* Is the slope-rail_bits combination valid in general? I.e. is it safe to call GetRailFoundation() ? */
2974  if (CheckRailSlope(tileh_new, rail_bits, TRACK_BIT_NONE, tile).Failed()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2975 
2976  /* Get the slopes on top of the foundations */
2977  z_old += ApplyFoundationToSlope(GetRailFoundation(tileh_old, rail_bits), &tileh_old);
2978  z_new += ApplyFoundationToSlope(GetRailFoundation(tileh_new, rail_bits), &tileh_new);
2979 
2980  Corner track_corner;
2981  switch (rail_bits) {
2982  case TRACK_BIT_LEFT: track_corner = CORNER_W; break;
2983  case TRACK_BIT_LOWER: track_corner = CORNER_S; break;
2984  case TRACK_BIT_RIGHT: track_corner = CORNER_E; break;
2985  case TRACK_BIT_UPPER: track_corner = CORNER_N; break;
2986 
2987  /* Surface slope must not be changed */
2988  default:
2989  if (z_old != z_new || tileh_old != tileh_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2990  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
2991  }
2992 
2993  /* The height of the track_corner must not be changed. The rest ensures GetRailFoundation() already. */
2994  z_old += GetSlopeZInCorner(RemoveHalftileSlope(tileh_old), track_corner);
2995  z_new += GetSlopeZInCorner(RemoveHalftileSlope(tileh_new), track_corner);
2996  if (z_old != z_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK);
2997 
2998  CommandCost cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
2999  /* Make the ground dirty, if surface slope has changed */
3000  if (tileh_old != tileh_new) {
3001  /* If there is flat water on the lower halftile add the cost for clearing it */
3002  if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old)) cost.AddCost(_price[PR_CLEAR_WATER]);
3003  if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN);
3004  }
3005  return cost;
3006 }
3007 
3011 static Vehicle *EnsureNoShipProc(Vehicle *v, void *data)
3012 {
3013  return v->type == VEH_SHIP ? v : NULL;
3014 }
3015 
3016 static CommandCost TerraformTile_Track(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
3017 {
3018  int z_old;
3019  Slope tileh_old = GetTileSlope(tile, &z_old);
3020  if (IsPlainRail(tile)) {
3021  TrackBits rail_bits = GetTrackBits(tile);
3022  /* Is there flat water on the lower halftile that must be cleared expensively? */
3023  bool was_water = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old));
3024 
3025  /* Allow clearing the water only if there is no ship */
3026  if (was_water && HasVehicleOnPos(tile, NULL, &EnsureNoShipProc)) return_cmd_error(STR_ERROR_SHIP_IN_THE_WAY);
3027 
3028  /* First test autoslope. However if it succeeds we still have to test the rest, because non-autoslope terraforming is cheaper. */
3029  CommandCost autoslope_result = TestAutoslopeOnRailTile(tile, flags, z_old, tileh_old, z_new, tileh_new, rail_bits);
3030 
3031  /* When there is only a single horizontal/vertical track, one corner can be terraformed. */
3032  Corner allowed_corner;
3033  switch (rail_bits) {
3034  case TRACK_BIT_RIGHT: allowed_corner = CORNER_W; break;
3035  case TRACK_BIT_UPPER: allowed_corner = CORNER_S; break;
3036  case TRACK_BIT_LEFT: allowed_corner = CORNER_E; break;
3037  case TRACK_BIT_LOWER: allowed_corner = CORNER_N; break;
3038  default: return autoslope_result;
3039  }
3040 
3041  Foundation f_old = GetRailFoundation(tileh_old, rail_bits);
3042 
3043  /* Do not allow terraforming if allowed_corner is part of anti-zig-zag foundations */
3044  if (tileh_old != SLOPE_NS && tileh_old != SLOPE_EW && IsSpecialRailFoundation(f_old)) return autoslope_result;
3045 
3046  /* Everything is valid, which only changes allowed_corner */
3047  for (Corner corner = (Corner)0; corner < CORNER_END; corner = (Corner)(corner + 1)) {
3048  if (allowed_corner == corner) continue;
3049  if (z_old + GetSlopeZInCorner(tileh_old, corner) != z_new + GetSlopeZInCorner(tileh_new, corner)) return autoslope_result;
3050  }
3051 
3052  /* Make the ground dirty */
3053  if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN);
3054 
3055  /* allow terraforming */
3056  return CommandCost(EXPENSES_CONSTRUCTION, was_water ? _price[PR_CLEAR_WATER] : (Money)0);
3058  AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRailDepotDirection(tile))) {
3059  return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
3060  }
3061  return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
3062 }
3063 
3064 
3065 extern const TileTypeProcs _tile_type_rail_procs = {
3066  DrawTile_Track, // draw_tile_proc
3067  GetSlopePixelZ_Track, // get_slope_z_proc
3068  ClearTile_Track, // clear_tile_proc
3069  NULL, // add_accepted_cargo_proc
3070  GetTileDesc_Track, // get_tile_desc_proc
3071  GetTileTrackStatus_Track, // get_tile_track_status_proc
3072  ClickTile_Track, // click_tile_proc
3073  NULL, // animate_tile_proc
3074  TileLoop_Track, // tile_loop_proc
3075  ChangeTileOwner_Track, // change_tile_owner_proc
3076  NULL, // add_produced_cargo_proc
3077  VehicleEnter_Track, // vehicle_enter_tile_proc
3078  GetFoundation_Track, // get_foundation_proc
3079  TerraformTile_Track, // terraform_tile_proc
3080 };
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:89
Piece of rail on slope with north-west raised.
Definition: rail.h:69
don&#39;t allow building on structures
Definition: command_type.h:343
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:512
uint ApplyFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.cpp:99
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:324
Functions/types related to NewGRF debugging.
void InitRailTypes()
Resolve sprites of custom rail types.
Definition: rail_cmd.cpp:138
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:600
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:1520
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
struct RailtypeInfo::@36 base_sprites
Struct containing the main sprites.
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:1943
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:296
static TropicZone GetTropicZone(TileIndex tile)
Get the tropic zone.
Definition: tile_map.h:231
static TransportType GetTunnelBridgeTransportType(TileIndex t)
Tunnel: Get the transport type of the tunnel (road or rail) Bridge: Get the transport type of the bri...
RailTypes
The different roadtypes we support, but then a bitmask of them.
Definition: rail_type.h:52
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:1851
static void SetTileOwner(TileIndex tile, Owner owner)
Sets the owner of a tile.
Definition: tile_map.h:191
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:99
static Money RailConvertCost(RailType from, RailType to)
Calculates the cost of rail conversion.
Definition: rail.h:372
SpriteID single_sloped
single piece of rail for slopes
Definition: rail.h:132
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:278
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:146
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:93
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:1917
uint GetPartialPixelZ(int x, int y, Slope corners)
Determines height at given coordinate of a slope.
Definition: landscape.cpp:152
CommandCost EnsureNoVehicleOnGround(TileIndex tile)
Ensure there is no vehicle at the ground at the given position.
Definition: vehicle.cpp:538
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:1428
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:145
static VehicleEnterTileStatus VehicleEnter_Track(Vehicle *u, TileIndex tile, int x, int y)
Tile callback routine when vehicle enters tile.
Definition: rail_cmd.cpp:2909
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:1032
Basic road type.
Definition: road_type.h:24
Piece of rail in southern corner.
Definition: rail.h:63
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:1970
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
static T SetBit(T &x, const uint8 y)
Set a bit in a variable.
Offsets for drawing fences.
Definition: rail_cmd.cpp:1908
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:72
int y_offs
Bounding box Y offset.
Definition: rail_cmd.cpp:1911
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:749
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:300
Track right, direction south.
Definition: track_type.h:113
Ballast for junction &#39;pointing&#39; NW.
Definition: rail.h:74
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:442
bool ValParamRailtype(const RailType rail)
Validate functions for rail building.
Definition: rail.cpp:198
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:66
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:512
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:65
SpriteID single_e
single piece of rail in the eastern corner
Definition: rail.h:130
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:1426
Fence images.
Definition: rail.h:49
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:943
static TileIndex TileAddByDiagDir(TileIndex tile, DiagDirection dir)
Adds a DiagDir to a tile.
Definition: map_func.h:372
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:230
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:130
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:103
Helper functions to extract data from command parameters.
void ResetRailTypes()
Reset all rail type information to its default values.
Definition: rail_cmd.cpp:65
struct RailtypeInfo::@38 cursor
Cursors associated with the rail type.
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:500
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
Money GetCost() const
The costs as made up to this moment.
Definition: command_type.h:84
RailTypes compatible_railtypes
bitmask to the OTHER railtypes on which an engine of THIS railtype can physically travel ...
Definition: rail.h:180
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:1960
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:94
static void DrawTrackDetails(const TileInfo *ti, const RailtypeInfo *rti)
Draw track fences.
Definition: rail_cmd.cpp:2002
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:158
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:157
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:334
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:427
struct RailtypeInfo::@39 strings
Strings associated with the rail type.
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:123
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:2969
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:390
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:156
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:642
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:116
static bool HasRoadWorks(TileIndex t)
Check if a tile has road works.
Definition: road_map.h:482
T * Append(uint to_add=1)
Append an item and return it.
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:348
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:150
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:60
RailFenceOffset
Offsets from base sprite for fence sprites.
Definition: rail.h:91
Slope GetTileSlope(TileIndex tile, int *h)
Return the slope of a given tile inside the map.
Definition: tile_map.cpp:115
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:154
Track right, direction north.
Definition: track_type.h:120
SpriteID single_y
single piece of rail in Y direction, without ground
Definition: rail.h:127
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:207
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
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:1258
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:125
static bool IsTileType(TileIndex tile, TileType type)
Checks if a tile is a give tiletype.
Definition: tile_map.h:143
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:127
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:436
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:1909
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:41
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:105
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:1548
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:567
static Owner GetTileOwner(TileIndex tile)
Returns the owner of a tile.
Definition: tile_map.h:171
Slope FLAT, Track UPPER, Fence S.
Definition: rail.h:95
static DiagDirection GetRailDepotDirection(TileIndex t)
Returns the direction the depot is facing to.
Definition: rail_map.h:172
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:340
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:68
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:60
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:1445
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:864
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:142
Trams.
Definition: road_type.h:25
int16 x
The x value of the coordinate.
Definition: map_type.h:59
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:255
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:328
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:260
void ShowDepotWindow(TileIndex tile, VehicleType type)
Opens a depot window.
Definition: depot_gui.cpp:1092
Used for iterations.
Slope SW, Track X, Fence NW.
Definition: rail.h:96
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:273
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:220
void FindVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc)
Find a vehicle from a specific location.
Definition: vehicle.cpp:497
SpriteID single_w
single piece of rail in the western corner
Definition: rail.h:131
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:157
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.
Sprites to use and how to display them for train depot tiles.
Crossing of X and Y rail, with ballast.
Definition: rail.h:70
SpriteID single_x
single piece of rail in X direction, without ground
Definition: rail.h:126
SpriteID convert_rail
button for converting rail
Definition: rail.h:149
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:355
#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:1980
Depot images.
Definition: rail.h:48
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:572
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:225
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:960
All flags cleared.
Definition: rail.h:30
Piece of rail in Y direction.
Definition: rail.h:61
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:408
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:376
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:67
Slope FLAT, Track X, Fence SE.
Definition: rail.h:100
SpriteID single_n
single piece of rail in the northern corner
Definition: rail.h:128
void UpdateLevelCrossing(TileIndex tile, bool sound=true)
Sets correct crossing state.
Definition: train_cmd.cpp:1699
Piece of rail in eastern corner.
Definition: rail.h:64
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:688
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:509
SpriteID single_s
single piece of rail in the southern corner
Definition: rail.h:129
Piece of rail in northern corner.
Definition: rail.h:62
Ship vehicle type.
Definition: vehicle_type.h:26
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:98
SpriteID build_depot
button for building depots
Definition: rail.h:147
&#39;Train&#39; is either a loco or a wagon.
Definition: train.h:88
CursorID depot
Cursor for building a depot.
Definition: rail.h:159
static Vehicle * EnsureNoShipProc(Vehicle *v, void *data)
Test-procedure for HasVehicleOnPos to check for a ship.
Definition: rail_cmd.cpp:3011
CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Remove a single piece of track.
Definition: rail_cmd.cpp:606
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
void MarkTileDirtyByTile(TileIndex tile, int bridge_level_offset)
Mark a tile given by its index dirty for repaint.
Definition: viewport.cpp:1904
convert a rail type
Definition: command_type.h:193
A pair-construct of a TileIndexDiff.
Definition: map_type.h:58
static TrackBits GetTrackBits(TileIndex tile)
Gets the track bits of the given tile.
Definition: rail_map.h:137
CompanyInfrastructure infrastructure
NOSAVE: Counts of company owned infrastructure.
Definition: company_base.h:125
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:161
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:342
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:236
static int GetSlopePixelZInCorner(Slope tileh, Corner corner)
Determine the Z height of a corner relative to TileZ.
Definition: landscape.h:54
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:4032
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:1526
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:155
Track x-axis, direction south-west.
Definition: track_type.h:115
Slope FLAT, Track RIGHT, Fence W.
Definition: rail.h:102
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:1569
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:1557
int x_offs
Bounding box X offset.
Definition: rail_cmd.cpp:1910
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:344
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:577
Cursor and toolbar icon images.
Definition: rail.h:40
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:1990
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:110
int TicksToLeaveDepot(const Train *v)
Compute number of ticks when next wagon will leave a depot.
Definition: rail_cmd.cpp:2889
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:2258
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:1912
static bool IsDiagonalTrackdir(Trackdir trackdir)
Checks if a given Trackdir is diagonal.
Definition: track_func.h:619
Slope
Enumeration for the slope-type.
Definition: slope_type.h:50
int y_size
Bounding box Y size.
Definition: rail_cmd.cpp:1913
A tile of a station.
Definition: tile_type.h:48
SpriteID build_tunnel
button for building a tunnel
Definition: rail.h:148
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:73
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:71
No rail types.
Definition: rail_type.h:53
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:42
Slope SE, Track Y, Fence NE.
Definition: rail.h:97
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:51
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:311
RailTypes powered_railtypes
bitmask to the OTHER railtypes on which an engine of THIS railtype generates power ...
Definition: rail.h:177
uint GetRailtypeSpriteOffset() const
Offset between the current railtype and normal rail.
Definition: rail.h:284
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
struct RailtypeInfo::@37 gui_sprites
struct containing the sprites for the rail GUI.
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:604
byte GetSnowLine()
Get the current snow line, either variable or static.
Definition: landscape.cpp:564
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:111
"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:104
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
static void MakeRoadNormal(TileIndex t, RoadBits bits, RoadTypes rot, TownID town, Owner road, Owner tram)
Make a normal road tile.
Definition: road_map.h:553
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:295
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:165
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:346
StringID str
Description of the tile.
Definition: tile_cmd.h:54
SpriteID tunnel
tunnel sprites base
Definition: rail.h:134
CursorID rail_ns
Cursor for building rail in N-S direction.
Definition: rail.h:154
Slope NE, Track X, Fence SE.
Definition: rail.h:106
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:2216
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:124
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:75
Left track.
Definition: track_type.h:47
Slope FLAT, Track X, Fence NW.
Definition: rail.h:92
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:249
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:143
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:107
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:924
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:2696
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:144
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:54
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:340
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:833
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:633
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:3220
The signal is green.
Definition: signal_type.h:48
Slope FLAT, Track Y, Fence SW.
Definition: rail.h:101
SpriteID snow_offset
sprite number difference between a piece of track on a snowy ground and the corresponding one on norm...
Definition: rail.h:174
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:299
Train vehicle type.
Definition: vehicle_type.h:24