OpenTTD Source: src/tunnelbridge_cmd.cpp Source File

OpenTTD Source 1.11.0-RC1

tunnelbridge_cmd.cpp
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1 /*
2 * This file is part of OpenTTD.
3 * 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.
4 * 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.
5 * 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/>.
6 */
7
14 #include "stdafx.h"
15 #include "newgrf_object.h"
16 #include "viewport_func.h"
17 #include "cmd_helper.h"
18 #include "command_func.h"
19 #include "town.h"
20 #include "train.h"
21 #include "ship.h"
22 #include "roadveh.h"
23 #include "pathfinder/yapf/yapf_cache.h"
24 #include "newgrf_sound.h"
25 #include "autoslope.h"
26 #include "tunnelbridge_map.h"
27 #include "strings_func.h"
28 #include "date_func.h"
29 #include "clear_func.h"
30 #include "vehicle_func.h"
31 #include "sound_func.h"
32 #include "tunnelbridge.h"
33 #include "cheat_type.h"
34 #include "elrail_func.h"
35 #include "pbs.h"
36 #include "company_base.h"
37 #include "newgrf_railtype.h"
38 #include "newgrf_roadtype.h"
39 #include "object_base.h"
40 #include "water.h"
41 #include "company_gui.h"
42 #include "station_func.h"
43
44 #include "table/strings.h"
45 #include "table/bridge_land.h"
46
47 #include "safeguards.h"
48
49 BridgeSpec _bridge[MAX_BRIDGES];
50 TileIndex _build_tunnel_endtile;
51
53 static const int BRIDGE_Z_START = 3;
54
55
64 void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
65 {
66 TileIndexDiff delta = TileOffsByDiagDir(direction);
67 for (TileIndex t = begin; t != end; t += delta) {
68 MarkTileDirtyByTile(t, bridge_height - TileHeight(t));
69 }
70 MarkTileDirtyByTile(end);
71 }
72
77 void MarkBridgeDirty(TileIndex tile)
78 {
79 MarkBridgeDirty(tile, GetOtherTunnelBridgeEnd(tile), GetTunnelBridgeDirection(tile), GetBridgeHeight(tile));
80 }
81
83 void ResetBridges()
84 {
85 /* First, free sprite table data */
86 for (BridgeType i = 0; i < MAX_BRIDGES; i++) {
87 if (_bridge[i].sprite_table != nullptr) {
88 for (BridgePieces j = BRIDGE_PIECE_NORTH; j < BRIDGE_PIECE_INVALID; j++) free(_bridge[i].sprite_table[j]);
89 free(_bridge[i].sprite_table);
90 }
91 }
92
93 /* Then, wipe out current bridges */
94 memset(&_bridge, 0, sizeof(_bridge));
95 /* And finally, reinstall default data */
96 memcpy(&_bridge, &_orig_bridge, sizeof(_orig_bridge));
97 }
98
105 int CalcBridgeLenCostFactor(int length)
106 {
107 if (length < 2) return length;
108
109 length -= 2;
110 int sum = 2;
111 for (int delta = 1;; delta++) {
112 for (int count = 0; count < delta; count++) {
113 if (length == 0) return sum;
114 sum += delta;
115 length--;
116 }
117 }
118 }
119
126 Foundation GetBridgeFoundation(Slope tileh, Axis axis)
127 {
128 if (tileh == SLOPE_FLAT ||
129 ((tileh == SLOPE_NE || tileh == SLOPE_SW) && axis == AXIS_X) ||
130 ((tileh == SLOPE_NW || tileh == SLOPE_SE) && axis == AXIS_Y)) return FOUNDATION_NONE;
131
132 return (HasSlopeHighestCorner(tileh) ? InclinedFoundation(axis) : FlatteningFoundation(tileh));
133 }
134
142 bool HasBridgeFlatRamp(Slope tileh, Axis axis)
143 {
144 ApplyFoundationToSlope(GetBridgeFoundation(tileh, axis), &tileh);
145 /* If the foundation slope is flat the bridge has a non-flat ramp and vice versa. */
146 return (tileh != SLOPE_FLAT);
147 }
148
149 static inline const PalSpriteID *GetBridgeSpriteTable(int index, BridgePieces table)
150 {
151 const BridgeSpec *bridge = GetBridgeSpec(index);
152 assert(table < BRIDGE_PIECE_INVALID);
153 if (bridge->sprite_table == nullptr || bridge->sprite_table[table] == nullptr) {
154 return _bridge_sprite_table[index][table];
155 } else {
156 return bridge->sprite_table[table];
157 }
158 }
159
160
170 static CommandCost CheckBridgeSlope(BridgePieces bridge_piece, Axis axis, Slope *tileh, int *z)
171 {
172 assert(bridge_piece == BRIDGE_PIECE_NORTH || bridge_piece == BRIDGE_PIECE_SOUTH);
173
174 Foundation f = GetBridgeFoundation(*tileh, axis);
175 *z += ApplyFoundationToSlope(f, tileh);
176
177 Slope valid_inclined;
178 if (bridge_piece == BRIDGE_PIECE_NORTH) {
179 valid_inclined = (axis == AXIS_X ? SLOPE_NE : SLOPE_NW);
180 } else {
181 valid_inclined = (axis == AXIS_X ? SLOPE_SW : SLOPE_SE);
182 }
183 if ((*tileh != SLOPE_FLAT) && (*tileh != valid_inclined)) return CMD_ERROR;
184
185 if (f == FOUNDATION_NONE) return CommandCost();
186
187 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
188 }
189
197 CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
198 {
199 if (flags & DC_QUERY_COST) {
200 if (bridge_len <= _settings_game.construction.max_bridge_length) return CommandCost();
201 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
202 }
203
204 if (bridge_type >= MAX_BRIDGES) return CMD_ERROR;
205
206 const BridgeSpec *b = GetBridgeSpec(bridge_type);
207 if (b->avail_year > _cur_year) return CMD_ERROR;
208
209 uint max = std::min(b->max_length, _settings_game.construction.max_bridge_length);
210
211 if (b->min_length > bridge_len) return CMD_ERROR;
212 if (bridge_len <= max) return CommandCost();
213 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
214 }
215
221 static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
222 {
223 Money base_cost = _price[base_price];
224
225 /* Add the cost of the transport that is on the tunnel/bridge. */
226 switch (GetTunnelBridgeTransportType(tile)) {
227 case TRANSPORT_ROAD: {
228 RoadType road_rt = GetRoadTypeRoad(tile);
229 RoadType tram_rt = GetRoadTypeTram(tile);
230
231 if (road_rt != INVALID_ROADTYPE) {
232 base_cost += 2 * RoadClearCost(road_rt);
233 }
234 if (tram_rt != INVALID_ROADTYPE) {
235 base_cost += 2 * RoadClearCost(tram_rt);
236 }
237 } break;
238
239 case TRANSPORT_RAIL: base_cost += RailClearCost(GetRailType(tile)); break;
240 /* Aquaducts have their own clear price. */
241 case TRANSPORT_WATER: base_cost = _price[PR_CLEAR_AQUEDUCT]; break;
242 default: break;
243 }
244
245 return base_cost;
246 }
247
260 CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
261 {
262 CompanyID company = _current_company;
263
264 RailType railtype = INVALID_RAILTYPE;
265 RoadType roadtype = INVALID_ROADTYPE;
266
267 /* unpack parameters */
268 BridgeType bridge_type = GB(p2, 0, 8);
269
270 if (!IsValidTile(p1)) return_cmd_error(STR_ERROR_BRIDGE_THROUGH_MAP_BORDER);
271
272 TransportType transport_type = Extract<TransportType, 15, 2>(p2);
273
274 /* type of bridge */
275 switch (transport_type) {
276 case TRANSPORT_ROAD:
277 roadtype = Extract<RoadType, 8, 6>(p2);
278 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
279 break;
280
281 case TRANSPORT_RAIL:
282 railtype = Extract<RailType, 8, 6>(p2);
283 if (!ValParamRailtype(railtype)) return CMD_ERROR;
284 break;
285
286 case TRANSPORT_WATER:
287 break;
288
289 default:
290 /* Airports don't have bridges. */
291 return CMD_ERROR;
292 }
293 TileIndex tile_start = p1;
294 TileIndex tile_end = end_tile;
295
296 if (company == OWNER_DEITY) {
297 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
298 const Town *town = CalcClosestTownFromTile(tile_start);
299
300 company = OWNER_TOWN;
301
302 /* If we are not within a town, we are not owned by the town */
303 if (town == nullptr || DistanceSquare(tile_start, town->xy) > town->cache.squared_town_zone_radius[HZB_TOWN_EDGE]) {
304 company = OWNER_NONE;
305 }
306 }
307
308 if (tile_start == tile_end) {
309 return_cmd_error(STR_ERROR_CAN_T_START_AND_END_ON);
310 }
311
312 Axis direction;
313 if (TileX(tile_start) == TileX(tile_end)) {
314 direction = AXIS_Y;
315 } else if (TileY(tile_start) == TileY(tile_end)) {
316 direction = AXIS_X;
317 } else {
318 return_cmd_error(STR_ERROR_START_AND_END_MUST_BE_IN);
319 }
320
321 if (tile_end < tile_start) Swap(tile_start, tile_end);
322
323 uint bridge_len = GetTunnelBridgeLength(tile_start, tile_end);
324 if (transport_type != TRANSPORT_WATER) {
325 /* set and test bridge length, availability */
326 CommandCost ret = CheckBridgeAvailability(bridge_type, bridge_len, flags);
327 if (ret.Failed()) return ret;
328 } else {
329 if (bridge_len > _settings_game.construction.max_bridge_length) return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
330 }
331 bridge_len += 2; // begin and end tiles/ramps
332
333 int z_start;
334 int z_end;
335 Slope tileh_start = GetTileSlope(tile_start, &z_start);
336 Slope tileh_end = GetTileSlope(tile_end, &z_end);
337 bool pbs_reservation = false;
338
339 CommandCost terraform_cost_north = CheckBridgeSlope(BRIDGE_PIECE_NORTH, direction, &tileh_start, &z_start);
340 CommandCost terraform_cost_south = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, direction, &tileh_end, &z_end);
341
342 /* Aqueducts can't be built of flat land. */
343 if (transport_type == TRANSPORT_WATER && (tileh_start == SLOPE_FLAT || tileh_end == SLOPE_FLAT)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
344 if (z_start != z_end) return_cmd_error(STR_ERROR_BRIDGEHEADS_NOT_SAME_HEIGHT);
345
346 CommandCost cost(EXPENSES_CONSTRUCTION);
347 Owner owner;
348 bool is_new_owner;
349 RoadType road_rt = INVALID_ROADTYPE;
350 RoadType tram_rt = INVALID_ROADTYPE;
351 if (IsBridgeTile(tile_start) && IsBridgeTile(tile_end) &&
352 GetOtherBridgeEnd(tile_start) == tile_end &&
353 GetTunnelBridgeTransportType(tile_start) == transport_type) {
354 /* Replace a current bridge. */
355
356 switch (transport_type) {
357 case TRANSPORT_RAIL:
358 /* Keep the reservation, the path stays valid. */
359 pbs_reservation = HasTunnelBridgeReservation(tile_start);
360 break;
361
362 case TRANSPORT_ROAD:
363 /* Do not remove road types when upgrading a bridge */
364 road_rt = GetRoadTypeRoad(tile_start);
365 tram_rt = GetRoadTypeTram(tile_start);
366 break;
367
368 default: break;
369 }
370
371 /* If this is a railway bridge, make sure the railtypes match. */
372 if (transport_type == TRANSPORT_RAIL && GetRailType(tile_start) != railtype) {
373 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
374 }
375
376 /* If this is a road bridge, make sure the roadtype matches. */
377 if (transport_type == TRANSPORT_ROAD) {
378 RoadType existing_rt = RoadTypeIsRoad(roadtype) ? road_rt : tram_rt;
379 if (existing_rt != roadtype && existing_rt != INVALID_ROADTYPE) {
380 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
381 }
382 }
383
384 /* Do not replace town bridges with lower speed bridges, unless in scenario editor. */
385 if (!(flags & DC_QUERY_COST) && IsTileOwner(tile_start, OWNER_TOWN) &&
386 GetBridgeSpec(bridge_type)->speed < GetBridgeSpec(GetBridgeType(tile_start))->speed &&
387 _game_mode != GM_EDITOR) {
388 Town *t = ClosestTownFromTile(tile_start, UINT_MAX);
389
390 if (t == nullptr) {
391 return CMD_ERROR;
392 } else {
393 SetDParam(0, t->index);
394 return_cmd_error(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS);
395 }
396 }
397
398 /* Do not replace the bridge with the same bridge type. */
399 if (!(flags & DC_QUERY_COST) && (bridge_type == GetBridgeType(tile_start)) && (transport_type != TRANSPORT_ROAD || road_rt == roadtype || tram_rt == roadtype)) {
400 return_cmd_error(STR_ERROR_ALREADY_BUILT);
401 }
402
403 /* Do not allow replacing another company's bridges. */
404 if (!IsTileOwner(tile_start, company) && !IsTileOwner(tile_start, OWNER_TOWN) && !IsTileOwner(tile_start, OWNER_NONE)) {
405 return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
406 }
407
408 /* The cost of clearing the current bridge. */
409 cost.AddCost(bridge_len * TunnelBridgeClearCost(tile_start, PR_CLEAR_BRIDGE));
410 owner = GetTileOwner(tile_start);
411
412 /* If bridge belonged to bankrupt company, it has a new owner now */
413 is_new_owner = (owner == OWNER_NONE);
414 if (is_new_owner) owner = company;
415 } else {
416 /* Build a new bridge. */
417
418 bool allow_on_slopes = (_settings_game.construction.build_on_slopes && transport_type != TRANSPORT_WATER);
419
420 /* Try and clear the start landscape */
421 CommandCost ret = DoCommand(tile_start, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
422 if (ret.Failed()) return ret;
423 cost = ret;
424
425 if (terraform_cost_north.Failed() || (terraform_cost_north.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
426 cost.AddCost(terraform_cost_north);
427
428 /* Try and clear the end landscape */
429 ret = DoCommand(tile_end, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
430 if (ret.Failed()) return ret;
431 cost.AddCost(ret);
432
433 /* false - end tile slope check */
434 if (terraform_cost_south.Failed() || (terraform_cost_south.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
435 cost.AddCost(terraform_cost_south);
436
437 const TileIndex heads[] = {tile_start, tile_end};
438 for (int i = 0; i < 2; i++) {
439 if (IsBridgeAbove(heads[i])) {
440 TileIndex north_head = GetNorthernBridgeEnd(heads[i]);
441
442 if (direction == GetBridgeAxis(heads[i])) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
443
444 if (z_start + 1 == GetBridgeHeight(north_head)) {
445 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
446 }
447 }
448 }
449
450 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
451 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
452 if (GetTileMaxZ(tile) > z_start) return_cmd_error(STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN);
453
454 if (z_start >= (GetTileZ(tile) + _settings_game.construction.max_bridge_height)) {
455 /*
456 * Disallow too high bridges.
457 * Properly rendering a map where very high bridges (might) exist is expensive.
458 * See http://www.tt-forums.net/viewtopic.php?f=33&t=40844&start=980#p1131762
459 * for a detailed discussion. z_start here is one heightlevel below the bridge level.
460 */
461 return_cmd_error(STR_ERROR_BRIDGE_TOO_HIGH_FOR_TERRAIN);
462 }
463
464 if (IsBridgeAbove(tile)) {
465 /* Disallow crossing bridges for the time being */
466 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
467 }
468
469 switch (GetTileType(tile)) {
470 case MP_WATER:
471 if (!IsWater(tile) && !IsCoast(tile)) goto not_valid_below;
472 break;
473
474 case MP_RAILWAY:
475 if (!IsPlainRail(tile)) goto not_valid_below;
476 break;
477
478 case MP_ROAD:
479 if (IsRoadDepot(tile)) goto not_valid_below;
480 break;
481
482 case MP_TUNNELBRIDGE:
483 if (IsTunnel(tile)) break;
484 if (direction == DiagDirToAxis(GetTunnelBridgeDirection(tile))) goto not_valid_below;
485 if (z_start < GetBridgeHeight(tile)) goto not_valid_below;
486 break;
487
488 case MP_OBJECT: {
489 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
490 if ((spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) == 0) goto not_valid_below;
491 if (GetTileMaxZ(tile) + spec->height > z_start) goto not_valid_below;
492 break;
493 }
494
495 case MP_CLEAR:
496 break;
497
498 default:
499 not_valid_below:;
500 /* try and clear the middle landscape */
501 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
502 if (ret.Failed()) return ret;
503 cost.AddCost(ret);
504 break;
505 }
506
507 if (flags & DC_EXEC) {
508 /* We do this here because when replacing a bridge with another
509 * type calling SetBridgeMiddle isn't needed. After all, the
510 * tile already has the has_bridge_above bits set. */
511 SetBridgeMiddle(tile, direction);
512 }
513 }
514
515 owner = company;
516 is_new_owner = true;
517 }
518
519 bool hasroad = road_rt != INVALID_ROADTYPE;
520 bool hastram = tram_rt != INVALID_ROADTYPE;
521 if (transport_type == TRANSPORT_ROAD) {
522 if (RoadTypeIsRoad(roadtype)) road_rt = roadtype;
523 if (RoadTypeIsTram(roadtype)) tram_rt = roadtype;
524 }
525
526 /* do the drill? */
527 if (flags & DC_EXEC) {
528 DiagDirection dir = AxisToDiagDir(direction);
529
530 Company *c = Company::GetIfValid(company);
531 switch (transport_type) {
532 case TRANSPORT_RAIL:
533 /* Add to company infrastructure count if required. */
534 if (is_new_owner && c != nullptr) c->infrastructure.rail[railtype] += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
535 MakeRailBridgeRamp(tile_start, owner, bridge_type, dir, railtype);
536 MakeRailBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), railtype);
537 SetTunnelBridgeReservation(tile_start, pbs_reservation);
538 SetTunnelBridgeReservation(tile_end, pbs_reservation);
539 break;
540
541 case TRANSPORT_ROAD: {
542 if (is_new_owner) {
543 /* Also give unowned present roadtypes to new owner */
544 if (hasroad && GetRoadOwner(tile_start, RTT_ROAD) == OWNER_NONE) hasroad = false;
545 if (hastram && GetRoadOwner(tile_start, RTT_TRAM) == OWNER_NONE) hastram = false;
546 }
547 if (c != nullptr) {
548 /* Add all new road types to the company infrastructure counter. */
549 if (!hasroad && road_rt != INVALID_ROADTYPE) {
550 /* A full diagonal road tile has two road bits. */
551 c->infrastructure.road[road_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
552 }
553 if (!hastram && tram_rt != INVALID_ROADTYPE) {
554 /* A full diagonal road tile has two road bits. */
555 c->infrastructure.road[tram_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
556 }
557 }
558 Owner owner_road = hasroad ? GetRoadOwner(tile_start, RTT_ROAD) : company;
559 Owner owner_tram = hastram ? GetRoadOwner(tile_start, RTT_TRAM) : company;
560 MakeRoadBridgeRamp(tile_start, owner, owner_road, owner_tram, bridge_type, dir, road_rt, tram_rt);
561 MakeRoadBridgeRamp(tile_end, owner, owner_road, owner_tram, bridge_type, ReverseDiagDir(dir), road_rt, tram_rt);
562 break;
563 }
564
565 case TRANSPORT_WATER:
566 if (is_new_owner && c != nullptr) c->infrastructure.water += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
567 MakeAqueductBridgeRamp(tile_start, owner, dir);
568 MakeAqueductBridgeRamp(tile_end, owner, ReverseDiagDir(dir));
569 CheckForDockingTile(tile_start);
570 CheckForDockingTile(tile_end);
571 break;
572
573 default:
574 NOT_REACHED();
575 }
576
577 /* Mark all tiles dirty */
578 MarkBridgeDirty(tile_start, tile_end, AxisToDiagDir(direction), z_start);
579 DirtyCompanyInfrastructureWindows(company);
580 }
581
582 if ((flags & DC_EXEC) && transport_type == TRANSPORT_RAIL) {
583 Track track = AxisToTrack(direction);
584 AddSideToSignalBuffer(tile_start, INVALID_DIAGDIR, company);
585 YapfNotifyTrackLayoutChange(tile_start, track);
586 }
587
588 /* Human players that build bridges get a selection to choose from (DC_QUERY_COST)
589 * It's unnecessary to execute this command every time for every bridge.
590 * So it is done only for humans and cost is computed in bridge_gui.cpp.
591 * For (non-spectated) AI, Towns this has to be of course calculated. */
592 Company *c = Company::GetIfValid(company);
593 if (!(flags & DC_QUERY_COST) || (c != nullptr && c->is_ai && company != _local_company)) {
594 switch (transport_type) {
595 case TRANSPORT_ROAD:
596 if (road_rt != INVALID_ROADTYPE) {
597 cost.AddCost(bridge_len * 2 * RoadBuildCost(road_rt));
598 }
599 if (tram_rt != INVALID_ROADTYPE) {
600 cost.AddCost(bridge_len * 2 * RoadBuildCost(tram_rt));
601 }
602 break;
603
604 case TRANSPORT_RAIL: cost.AddCost(bridge_len * RailBuildCost(railtype)); break;
605 default: break;
606 }
607
608 if (c != nullptr) bridge_len = CalcBridgeLenCostFactor(bridge_len);
609
610 if (transport_type != TRANSPORT_WATER) {
611 cost.AddCost((int64)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
612 } else {
613 /* Aqueducts use a separate base cost. */
614 cost.AddCost((int64)bridge_len * _price[PR_BUILD_AQUEDUCT]);
615 }
616
617 }
618
619 return cost;
620 }
621
622
633 CommandCost CmdBuildTunnel(TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
634 {
635 CompanyID company = _current_company;
636
637 TransportType transport_type = Extract<TransportType, 8, 2>(p1);
638 RailType railtype = INVALID_RAILTYPE;
639 RoadType roadtype = INVALID_ROADTYPE;
640 _build_tunnel_endtile = 0;
641 switch (transport_type) {
642 case TRANSPORT_RAIL:
643 railtype = Extract<RailType, 0, 6>(p1);
644 if (!ValParamRailtype(railtype)) return CMD_ERROR;
645 break;
646
647 case TRANSPORT_ROAD:
648 roadtype = Extract<RoadType, 0, 6>(p1);
649 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
650 break;
651
652 default: return CMD_ERROR;
653 }
654
655 if (company == OWNER_DEITY) {
656 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
657 const Town *town = CalcClosestTownFromTile(start_tile);
658
659 company = OWNER_TOWN;
660
661 /* If we are not within a town, we are not owned by the town */
662 if (town == nullptr || DistanceSquare(start_tile, town->xy) > town->cache.squared_town_zone_radius[HZB_TOWN_EDGE]) {
663 company = OWNER_NONE;
664 }
665 }
666
667 int start_z;
668 int end_z;
669 Slope start_tileh = GetTileSlope(start_tile, &start_z);
670 DiagDirection direction = GetInclinedSlopeDirection(start_tileh);
671 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE_FOR_TUNNEL);
672
673 if (HasTileWaterGround(start_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
674
675 CommandCost ret = DoCommand(start_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
676 if (ret.Failed()) return ret;
677
678 /* XXX - do NOT change 'ret' in the loop, as it is used as the price
679 * for the clearing of the entrance of the tunnel. Assigning it to
680 * cost before the loop will yield different costs depending on start-
681 * position, because of increased-cost-by-length: 'cost += cost >> 3' */
682
683 TileIndexDiff delta = TileOffsByDiagDir(direction);
684 DiagDirection tunnel_in_way_dir;
685 if (DiagDirToAxis(direction) == AXIS_Y) {
686 tunnel_in_way_dir = (TileX(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SW : DIAGDIR_NE;
687 } else {
688 tunnel_in_way_dir = (TileY(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SE : DIAGDIR_NW;
689 }
690
691 TileIndex end_tile = start_tile;
692
693 /* Tile shift coefficient. Will decrease for very long tunnels to avoid exponential growth of price*/
694 int tiles_coef = 3;
695 /* Number of tiles from start of tunnel */
696 int tiles = 0;
697 /* Number of tiles at which the cost increase coefficient per tile is halved */
698 int tiles_bump = 25;
699
700 CommandCost cost(EXPENSES_CONSTRUCTION);
701 Slope end_tileh;
702 for (;;) {
703 end_tile += delta;
704 if (!IsValidTile(end_tile)) return_cmd_error(STR_ERROR_TUNNEL_THROUGH_MAP_BORDER);
705 end_tileh = GetTileSlope(end_tile, &end_z);
706
707 if (start_z == end_z) break;
708
709 if (!_cheats.crossing_tunnels.value && IsTunnelInWayDir(end_tile, start_z, tunnel_in_way_dir)) {
710 return_cmd_error(STR_ERROR_ANOTHER_TUNNEL_IN_THE_WAY);
711 }
712
713 tiles++;
714 if (tiles == tiles_bump) {
715 tiles_coef++;
716 tiles_bump *= 2;
717 }
718
719 cost.AddCost(_price[PR_BUILD_TUNNEL]);
720 cost.AddCost(cost.GetCost() >> tiles_coef); // add a multiplier for longer tunnels
721 }
722
723 /* Add the cost of the entrance */
724 cost.AddCost(_price[PR_BUILD_TUNNEL]);
725 cost.AddCost(ret);
726
727 /* if the command fails from here on we want the end tile to be highlighted */
728 _build_tunnel_endtile = end_tile;
729
730 if (tiles > _settings_game.construction.max_tunnel_length) return_cmd_error(STR_ERROR_TUNNEL_TOO_LONG);
731
732 if (HasTileWaterGround(end_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
733
734 /* Clear the tile in any case */
735 ret = DoCommand(end_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
736 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
737 cost.AddCost(ret);
738
739 /* slope of end tile must be complementary to the slope of the start tile */
740 if (end_tileh != ComplementSlope(start_tileh)) {
741 /* Mark the tile as already cleared for the terraform command.
742 * Do this for all tiles (like trees), not only objects. */
743 ClearedObjectArea *coa = FindClearedObject(end_tile);
744 if (coa == nullptr) {
745 coa = &_cleared_object_areas.emplace_back(ClearedObjectArea{ end_tile, TileArea(end_tile, 1, 1) });
746 }
747
748 /* Hide the tile from the terraforming command */
749 TileIndex old_first_tile = coa->first_tile;
750 coa->first_tile = INVALID_TILE;
751
752 /* CMD_TERRAFORM_LAND may append further items to _cleared_object_areas,
753 * however it will never erase or re-order existing items.
754 * _cleared_object_areas is a value-type self-resizing vector, therefore appending items
755 * may result in a backing-store re-allocation, which would invalidate the coa pointer.
756 * The index of the coa pointer into the _cleared_object_areas vector remains valid,
757 * and can be used safely after the CMD_TERRAFORM_LAND operation.
758 * Deliberately clear the coa pointer to avoid leaving dangling pointers which could
759 * inadvertently be dereferenced.
760 */
761 ClearedObjectArea *begin = _cleared_object_areas.data();
762 assert(coa >= begin && coa < begin + _cleared_object_areas.size());
763 size_t coa_index = coa - begin;
764 assert(coa_index < UINT_MAX); // more than 2**32 cleared areas would be a bug in itself
765 coa = nullptr;
766
767 ret = DoCommand(end_tile, end_tileh & start_tileh, 0, flags, CMD_TERRAFORM_LAND);
768 _cleared_object_areas[(uint)coa_index].first_tile = old_first_tile;
769 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
770 cost.AddCost(ret);
771 }
772 cost.AddCost(_price[PR_BUILD_TUNNEL]);
773
774 /* Pay for the rail/road in the tunnel including entrances */
775 switch (transport_type) {
776 case TRANSPORT_ROAD: cost.AddCost((tiles + 2) * RoadBuildCost(roadtype) * 2); break;
777 case TRANSPORT_RAIL: cost.AddCost((tiles + 2) * RailBuildCost(railtype)); break;
778 default: NOT_REACHED();
779 }
780
781 if (flags & DC_EXEC) {
782 Company *c = Company::GetIfValid(company);
783 uint num_pieces = (tiles + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
784 if (transport_type == TRANSPORT_RAIL) {
785 if (c != nullptr) c->infrastructure.rail[railtype] += num_pieces;
786 MakeRailTunnel(start_tile, company, direction, railtype);
787 MakeRailTunnel(end_tile, company, ReverseDiagDir(direction), railtype);
788 AddSideToSignalBuffer(start_tile, INVALID_DIAGDIR, company);
789 YapfNotifyTrackLayoutChange(start_tile, DiagDirToDiagTrack(direction));
790 } else {
791 if (c != nullptr) c->infrastructure.road[roadtype] += num_pieces * 2; // A full diagonal road has two road bits.
792 RoadType road_rt = RoadTypeIsRoad(roadtype) ? roadtype : INVALID_ROADTYPE;
793 RoadType tram_rt = RoadTypeIsTram(roadtype) ? roadtype : INVALID_ROADTYPE;
794 MakeRoadTunnel(start_tile, company, direction, road_rt, tram_rt);
795 MakeRoadTunnel(end_tile, company, ReverseDiagDir(direction), road_rt, tram_rt);
796 }
797 DirtyCompanyInfrastructureWindows(company);
798 }
799
800 return cost;
801 }
802
803
809 static inline CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
810 {
811 /* Floods can remove anything as well as the scenario editor */
812 if (_current_company == OWNER_WATER || _game_mode == GM_EDITOR) return CommandCost();
813
814 switch (GetTunnelBridgeTransportType(tile)) {
815 case TRANSPORT_ROAD: {
816 RoadType road_rt = GetRoadTypeRoad(tile);
817 RoadType tram_rt = GetRoadTypeTram(tile);
818 Owner road_owner = _current_company;
819 Owner tram_owner = _current_company;
820
821 if (road_rt != INVALID_ROADTYPE) road_owner = GetRoadOwner(tile, RTT_ROAD);
822 if (tram_rt != INVALID_ROADTYPE) tram_owner = GetRoadOwner(tile, RTT_TRAM);
823
824 /* We can remove unowned road and if the town allows it */
825 if (road_owner == OWNER_TOWN && _current_company != OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
826 /* Town does not allow */
827 return CheckTileOwnership(tile);
828 }
829 if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
830 if (tram_owner == OWNER_NONE) tram_owner = _current_company;
831
832 CommandCost ret = CheckOwnership(road_owner, tile);
833 if (ret.Succeeded()) ret = CheckOwnership(tram_owner, tile);
834 return ret;
835 }
836
837 case TRANSPORT_RAIL:
838 return CheckOwnership(GetTileOwner(tile));
839
840 case TRANSPORT_WATER: {
841 /* Always allow to remove aqueducts without owner. */
842 Owner aqueduct_owner = GetTileOwner(tile);
843 if (aqueduct_owner == OWNER_NONE) aqueduct_owner = _current_company;
844 return CheckOwnership(aqueduct_owner);
845 }
846
847 default: NOT_REACHED();
848 }
849 }
850
857 static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
858 {
859 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
860 if (ret.Failed()) return ret;
861
862 TileIndex endtile = GetOtherTunnelEnd(tile);
863
864 ret = TunnelBridgeIsFree(tile, endtile);
865 if (ret.Failed()) return ret;
866
867 _build_tunnel_endtile = endtile;
868
869 Town *t = nullptr;
870 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
871 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
872
873 /* Check if you are allowed to remove the tunnel owned by a town
874 * Removal depends on difficulty settings */
875 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
876 if (ret.Failed()) return ret;
877 }
878
879 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
880 * you have a "Poor" (0) town rating */
881 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
882 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
883 }
884
885 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_TUNNEL);
886 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
887
888 if (flags & DC_EXEC) {
889 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
890 /* We first need to request values before calling DoClearSquare */
891 DiagDirection dir = GetTunnelBridgeDirection(tile);
892 Track track = DiagDirToDiagTrack(dir);
893 Owner owner = GetTileOwner(tile);
894
895 Train *v = nullptr;
896 if (HasTunnelBridgeReservation(tile)) {
897 v = GetTrainForReservation(tile, track);
898 if (v != nullptr) FreeTrainTrackReservation(v);
899 }
900
901 if (Company::IsValidID(owner)) {
902 Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
903 DirtyCompanyInfrastructureWindows(owner);
904 }
905
906 DoClearSquare(tile);
907 DoClearSquare(endtile);
908
909 /* cannot use INVALID_DIAGDIR for signal update because the tunnel doesn't exist anymore */
910 AddSideToSignalBuffer(tile, ReverseDiagDir(dir), owner);
911 AddSideToSignalBuffer(endtile, dir, owner);
912
913 YapfNotifyTrackLayoutChange(tile, track);
914 YapfNotifyTrackLayoutChange(endtile, track);
915
916 if (v != nullptr) TryPathReserve(v);
917 } else {
918 /* A full diagonal road tile has two road bits. */
919 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
920 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
921
922 DoClearSquare(tile);
923 DoClearSquare(endtile);
924 }
925 }
926
927 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
928 }
929
930
937 static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
938 {
939 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
940 if (ret.Failed()) return ret;
941
942 TileIndex endtile = GetOtherBridgeEnd(tile);
943
944 ret = TunnelBridgeIsFree(tile, endtile);
945 if (ret.Failed()) return ret;
946
947 DiagDirection direction = GetTunnelBridgeDirection(tile);
948 TileIndexDiff delta = TileOffsByDiagDir(direction);
949
950 Town *t = nullptr;
951 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
952 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
953
954 /* Check if you are allowed to remove the bridge owned by a town
955 * Removal depends on difficulty settings */
956 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
957 if (ret.Failed()) return ret;
958 }
959
960 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
961 * you have a "Poor" (0) town rating */
962 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
963 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
964 }
965
966 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_BRIDGE);
967 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
968
969 if (flags & DC_EXEC) {
970 /* read this value before actual removal of bridge */
971 bool rail = GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL;
972 Owner owner = GetTileOwner(tile);
973 int height = GetBridgeHeight(tile);
974 Train *v = nullptr;
975
976 if (rail && HasTunnelBridgeReservation(tile)) {
977 v = GetTrainForReservation(tile, DiagDirToDiagTrack(direction));
978 if (v != nullptr) FreeTrainTrackReservation(v);
979 }
980
981 bool removetile = false;
982 bool removeendtile = false;
983
984 /* Update company infrastructure counts. */
985 if (rail) {
986 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
987 } else if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
988 /* A full diagonal road tile has two road bits. */
989 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
990 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
991 } else { // Aqueduct
992 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.water -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
993 removetile = IsDockingTile(tile);
994 removeendtile = IsDockingTile(endtile);
995 }
996 DirtyCompanyInfrastructureWindows(owner);
997
998 DoClearSquare(tile);
999 DoClearSquare(endtile);
1000
1001 if (removetile) RemoveDockingTile(tile);
1002 if (removeendtile) RemoveDockingTile(endtile);
1003 for (TileIndex c = tile + delta; c != endtile; c += delta) {
1004 /* do not let trees appear from 'nowhere' after removing bridge */
1005 if (IsNormalRoadTile(c) && GetRoadside(c) == ROADSIDE_TREES) {
1006 int minz = GetTileMaxZ(c) + 3;
1007 if (height < minz) SetRoadside(c, ROADSIDE_PAVED);
1008 }
1009 ClearBridgeMiddle(c);
1010 MarkTileDirtyByTile(c, height - TileHeight(c));
1011 }
1012
1013 if (rail) {
1014 /* cannot use INVALID_DIAGDIR for signal update because the bridge doesn't exist anymore */
1015 AddSideToSignalBuffer(tile, ReverseDiagDir(direction), owner);
1016 AddSideToSignalBuffer(endtile, direction, owner);
1017
1018 Track track = DiagDirToDiagTrack(direction);
1019 YapfNotifyTrackLayoutChange(tile, track);
1020 YapfNotifyTrackLayoutChange(endtile, track);
1021
1022 if (v != nullptr) TryPathReserve(v, true);
1023 }
1024 }
1025
1026 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
1027 }
1028
1035 static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
1036 {
1037 if (IsTunnel(tile)) {
1038 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_TUNNEL_FIRST);
1039 return DoClearTunnel(tile, flags);
1040 } else { // IsBridge(tile)
1041 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
1042 return DoClearBridge(tile, flags);
1043 }
1044 }
1045
1056 static inline void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
1057 {
1058 static const int PILLAR_Z_OFFSET = TILE_HEIGHT - BRIDGE_Z_START;
1059 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, w, h, BB_HEIGHT_UNDER_BRIDGE - PILLAR_Z_OFFSET, z, IsTransparencySet(TO_BRIDGES), 0, 0, -PILLAR_Z_OFFSET, subsprite);
1060 }
1061
1073 static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
1074 {
1075 int cur_z;
1076 for (cur_z = z_top; cur_z >= z_bottom; cur_z -= TILE_HEIGHT) {
1077 DrawPillar(psid, x, y, cur_z, w, h, nullptr);
1078 }
1079 return cur_z;
1080 }
1081
1093 static void DrawBridgePillars(const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
1094 {
1095 static const int bounding_box_size[2] = {16, 2};
1096 static const int back_pillar_offset[2] = { 0, 9};
1097
1098 static const int INF = 1000;
1099 static const SubSprite half_pillar_sub_sprite[2][2] = {
1100 { { -14, -INF, INF, INF }, { -INF, -INF, -15, INF } }, // X axis, north and south
1101 { { -INF, -INF, 15, INF }, { 16, -INF, INF, INF } }, // Y axis, north and south
1102 };
1103
1104 if (psid->sprite == 0) return;
1105
1106 /* Determine ground height under pillars */
1107 DiagDirection south_dir = AxisToDiagDir(axis);
1108 int z_front_north = ti->z;
1109 int z_back_north = ti->z;
1110 int z_front_south = ti->z;
1111 int z_back_south = ti->z;
1112 GetSlopePixelZOnEdge(ti->tileh, south_dir, &z_front_south, &z_back_south);
1113 GetSlopePixelZOnEdge(ti->tileh, ReverseDiagDir(south_dir), &z_front_north, &z_back_north);
1114
1115 /* Shared height of pillars */
1116 int z_front = std::max(z_front_north, z_front_south);
1117 int z_back = std::max(z_back_north, z_back_south);
1118
1119 /* x and y size of bounding-box of pillars */
1120 int w = bounding_box_size[axis];
1121 int h = bounding_box_size[OtherAxis(axis)];
1122 /* sprite position of back facing pillar */
1123 int x_back = x - back_pillar_offset[axis];
1124 int y_back = y - back_pillar_offset[OtherAxis(axis)];
1125
1126 /* Draw front pillars */
1127 int bottom_z = DrawPillarColumn(z_front, z_bridge, psid, x, y, w, h);
1128 if (z_front_north < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1129 if (z_front_south < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1130
1131 /* Draw back pillars, skip top two parts, which are hidden by the bridge */
1132 int z_bridge_back = z_bridge - 2 * (int)TILE_HEIGHT;
1133 if (drawfarpillar && (z_back_north <= z_bridge_back || z_back_south <= z_bridge_back)) {
1134 bottom_z = DrawPillarColumn(z_back, z_bridge_back, psid, x_back, y_back, w, h);
1135 if (z_back_north < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1136 if (z_back_south < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1137 }
1138 }
1139
1149 static void GetBridgeRoadCatenary(const RoadTypeInfo *rti, TileIndex head_tile, int offset, bool head, SpriteID &spr_back, SpriteID &spr_front)
1150 {
1151 static const SpriteID back_offsets[6] = { 95, 96, 99, 102, 100, 101 };
1152 static const SpriteID front_offsets[6] = { 97, 98, 103, 106, 104, 105 };
1153
1154 /* Simplified from DrawRoadTypeCatenary() to remove all the special cases required for regular ground road */
1155 spr_back = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_BACK, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1156 spr_front = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_FRONT, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1157 if (spr_back == 0 && spr_front == 0) {
1158 spr_back = SPR_TRAMWAY_BASE + back_offsets[offset];
1159 spr_front = SPR_TRAMWAY_BASE + front_offsets[offset];
1160 } else {
1161 if (spr_back != 0) spr_back += 23 + offset;
1162 if (spr_front != 0) spr_front += 23 + offset;
1163 }
1164 }
1165
1175 static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head)
1176 {
1177 RoadType road_rt = GetRoadTypeRoad(head_tile);
1178 RoadType tram_rt = GetRoadTypeTram(head_tile);
1179 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1180 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1181
1182 SpriteID seq_back[4] = { 0 };
1183 bool trans_back[4] = { false };
1184 SpriteID seq_front[4] = { 0 };
1185 bool trans_front[4] = { false };
1186
1187 static const SpriteID overlay_offsets[6] = { 0, 1, 11, 12, 13, 14 };
1188 if (head || !IsInvisibilitySet(TO_BRIDGES)) {
1189 /* Road underlay takes precedence over tram */
1190 trans_back[0] = !head && IsTransparencySet(TO_BRIDGES);
1191 if (road_rti != nullptr) {
1192 if (road_rti->UsesOverlay()) {
1193 seq_back[0] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1194 }
1195 } else if (tram_rti != nullptr) {
1196 if (tram_rti->UsesOverlay()) {
1197 seq_back[0] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1198 } else {
1199 seq_back[0] = SPR_TRAMWAY_BRIDGE + offset;
1200 }
1201 }
1202
1203 /* Draw road overlay */
1204 trans_back[1] = !head && IsTransparencySet(TO_BRIDGES);
1205 if (road_rti != nullptr) {
1206 if (road_rti->UsesOverlay()) {
1207 seq_back[1] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1208 if (seq_back[1] != 0) seq_back[1] += overlay_offsets[offset];
1209 }
1210 }
1211
1212 /* Draw tram overlay */
1213 trans_back[2] = !head && IsTransparencySet(TO_BRIDGES);
1214 if (tram_rti != nullptr) {
1215 if (tram_rti->UsesOverlay()) {
1216 seq_back[2] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1217 if (seq_back[2] != 0) seq_back[2] += overlay_offsets[offset];
1218 } else if (road_rti != nullptr) {
1219 seq_back[2] = SPR_TRAMWAY_OVERLAY + overlay_offsets[offset];
1220 }
1221 }
1222
1223 /* Road catenary takes precedence over tram */
1224 trans_back[3] = IsTransparencySet(TO_CATENARY);
1225 trans_front[0] = IsTransparencySet(TO_CATENARY);
1226 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1227 GetBridgeRoadCatenary(road_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1228 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1229 GetBridgeRoadCatenary(tram_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1230 }
1231 }
1232
1233 static const uint size_x[6] = { 1, 16, 16, 1, 16, 1 };
1234 static const uint size_y[6] = { 16, 1, 1, 16, 1, 16 };
1235 static const uint front_bb_offset_x[6] = { 15, 0, 0, 15, 0, 15 };
1236 static const uint front_bb_offset_y[6] = { 0, 15, 15, 0, 15, 0 };
1237
1238 /* The sprites under the vehicles are drawn as SpriteCombine. StartSpriteCombine() has already been called
1239 * The bounding boxes here are the same as for bridge front/roof */
1240 for (uint i = 0; i < lengthof(seq_back); ++i) {
1241 if (seq_back[i] != 0) {
1242 AddSortableSpriteToDraw(seq_back[i], PAL_NONE,
1243 x, y, size_x[offset], size_y[offset], 0x28, z,
1244 trans_back[i]);
1245 }
1246 }
1247
1248 /* Start a new SpriteCombine for the front part */
1249 EndSpriteCombine();
1250 StartSpriteCombine();
1251
1252 for (uint i = 0; i < lengthof(seq_front); ++i) {
1253 if (seq_front[i] != 0) {
1254 AddSortableSpriteToDraw(seq_front[i], PAL_NONE,
1255 x, y, size_x[offset] + front_bb_offset_x[offset], size_y[offset] + front_bb_offset_y[offset], 0x28, z,
1256 trans_front[i],
1257 front_bb_offset_x[offset], front_bb_offset_y[offset]);
1258 }
1259 }
1260 }
1261
1275 static void DrawTile_TunnelBridge(TileInfo *ti)
1276 {
1277 TransportType transport_type = GetTunnelBridgeTransportType(ti->tile);
1278 DiagDirection tunnelbridge_direction = GetTunnelBridgeDirection(ti->tile);
1279
1280 if (IsTunnel(ti->tile)) {
1281 /* Front view of tunnel bounding boxes:
1282 *
1283 * 122223 <- BB_Z_SEPARATOR
1284 * 1 3
1285 * 1 3 1,3 = empty helper BB
1286 * 1 3 2 = SpriteCombine of tunnel-roof and catenary (tram & elrail)
1287 *
1288 */
1289
1290 static const int _tunnel_BB[4][12] = {
1291 /* tunnnel-roof | Z-separator | tram-catenary
1292 * w h bb_x bb_y| x y w h |bb_x bb_y w h */
1293 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 }, // NE
1294 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 }, // SE
1295 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 }, // SW
1296 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 }, // NW
1297 };
1298 const int *BB_data = _tunnel_BB[tunnelbridge_direction];
1299
1300 bool catenary = false;
1301
1302 SpriteID image;
1303 SpriteID railtype_overlay = 0;
1304 if (transport_type == TRANSPORT_RAIL) {
1305 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1306 image = rti->base_sprites.tunnel;
1307 if (rti->UsesOverlay()) {
1308 /* Check if the railtype has custom tunnel portals. */
1309 railtype_overlay = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL_PORTAL);
1310 if (railtype_overlay != 0) image = SPR_RAILTYPE_TUNNEL_BASE; // Draw blank grass tunnel base.
1311 }
1312 } else {
1313 image = SPR_TUNNEL_ENTRY_REAR_ROAD;
1314 }
1315
1316 if (HasTunnelBridgeSnowOrDesert(ti->tile)) image += railtype_overlay != 0 ? 8 : 32;
1317
1318 image += tunnelbridge_direction * 2;
1319 DrawGroundSprite(image, PAL_NONE);
1320
1321 if (transport_type == TRANSPORT_ROAD) {
1322 RoadType road_rt = GetRoadTypeRoad(ti->tile);
1323 RoadType tram_rt = GetRoadTypeTram(ti->tile);
1324 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1325 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1326 uint sprite_offset = DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? 1 : 0;
1327
1328 DrawRoadOverlays(ti, PAL_NONE, road_rti, tram_rti, sprite_offset, sprite_offset);
1329
1330 /* Road catenary takes precedence over tram */
1331 SpriteID catenary_sprite_base = 0;
1332 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1333 catenary_sprite_base = GetCustomRoadSprite(road_rti, ti->tile, ROTSG_CATENARY_FRONT);
1334 if (catenary_sprite_base == 0) {
1335 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1336 } else {
1337 catenary_sprite_base += 19;
1338 }
1339 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1340 catenary_sprite_base = GetCustomRoadSprite(tram_rti, ti->tile, ROTSG_CATENARY_FRONT);
1341 if (catenary_sprite_base == 0) {
1342 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1343 } else {
1344 catenary_sprite_base += 19;
1345 }
1346 }
1347
1348 if (catenary_sprite_base != 0) {
1349 catenary = true;
1350 StartSpriteCombine();
1351 AddSortableSpriteToDraw(catenary_sprite_base + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, BB_data[10], BB_data[11], TILE_HEIGHT, ti->z, IsTransparencySet(TO_CATENARY), BB_data[8], BB_data[9], BB_Z_SEPARATOR);
1352 }
1353 } else {
1354 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1355 if (rti->UsesOverlay()) {
1356 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL);
1357 if (surface != 0) DrawGroundSprite(surface + tunnelbridge_direction, PAL_NONE);
1358 }
1359
1360 /* PBS debugging, draw reserved tracks darker */
1361 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1362 if (rti->UsesOverlay()) {
1363 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1364 DrawGroundSprite(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH);
1365 } else {
1366 DrawGroundSprite(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
1367 }
1368 }
1369
1370 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1371 /* Maybe draw pylons on the entry side */
1372 DrawRailCatenary(ti);
1373
1374 catenary = true;
1375 StartSpriteCombine();
1376 /* Draw wire above the ramp */
1377 DrawRailCatenaryOnTunnel(ti);
1378 }
1379 }
1380
1381 if (railtype_overlay != 0 && !catenary) StartSpriteCombine();
1382
1383 AddSortableSpriteToDraw(image + 1, PAL_NONE, ti->x + TILE_SIZE - 1, ti->y + TILE_SIZE - 1, BB_data[0], BB_data[1], TILE_HEIGHT, ti->z, false, BB_data[2], BB_data[3], BB_Z_SEPARATOR);
1384 /* Draw railtype tunnel portal overlay if defined. */
1385 if (railtype_overlay != 0) AddSortableSpriteToDraw(railtype_overlay + tunnelbridge_direction, PAL_NONE, ti->x + TILE_SIZE - 1, ti->y + TILE_SIZE - 1, BB_data[0], BB_data[1], TILE_HEIGHT, ti->z, false, BB_data[2], BB_data[3], BB_Z_SEPARATOR);
1386
1387 if (catenary || railtype_overlay != 0) EndSpriteCombine();
1388
1389 /* Add helper BB for sprite sorting that separates the tunnel from things beside of it. */
1390 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x, ti->y, BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
1391 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x + BB_data[4], ti->y + BB_data[5], BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
1392
1393 DrawBridgeMiddle(ti);
1394 } else { // IsBridge(ti->tile)
1395 const PalSpriteID *psid;
1396 int base_offset;
1397 bool ice = HasTunnelBridgeSnowOrDesert(ti->tile);
1398
1399 if (transport_type == TRANSPORT_RAIL) {
1400 base_offset = GetRailTypeInfo(GetRailType(ti->tile))->bridge_offset;
1401 assert(base_offset != 8); // This one is used for roads
1402 } else {
1403 base_offset = 8;
1404 }
1405
1406 /* as the lower 3 bits are used for other stuff, make sure they are clear */
1407 assert( (base_offset & 0x07) == 0x00);
1408
1409 DrawFoundation(ti, GetBridgeFoundation(ti->tileh, DiagDirToAxis(tunnelbridge_direction)));
1410
1411 /* HACK Wizardry to convert the bridge ramp direction into a sprite offset */
1412 base_offset += (6 - tunnelbridge_direction) % 4;
1413
1414 /* Table number BRIDGE_PIECE_HEAD always refers to the bridge heads for any bridge type */
1415 if (transport_type != TRANSPORT_WATER) {
1416 if (ti->tileh == SLOPE_FLAT) base_offset += 4; // sloped bridge head
1417 psid = &GetBridgeSpriteTable(GetBridgeType(ti->tile), BRIDGE_PIECE_HEAD)[base_offset];
1418 } else {
1419 psid = _aqueduct_sprites + base_offset;
1420 }
1421
1422 if (!ice) {
1423 TileIndex next = ti->tile + TileOffsByDiagDir(tunnelbridge_direction);
1424 if (ti->tileh != SLOPE_FLAT && ti->z == 0 && HasTileWaterClass(next) && GetWaterClass(next) == WATER_CLASS_SEA) {
1425 DrawShoreTile(ti->tileh);
1426 } else {
1427 DrawClearLandTile(ti, 3);
1428 }
1429 } else {
1430 DrawGroundSprite(SPR_FLAT_SNOW_DESERT_TILE + SlopeToSpriteOffset(ti->tileh), PAL_NONE);
1431 }
1432
1433 /* draw ramp */
1434
1435 /* Draw Trambits and PBS Reservation as SpriteCombine */
1436 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1437
1438 /* HACK set the height of the BB of a sloped ramp to 1 so a vehicle on
1439 * it doesn't disappear behind it
1440 */
1441 /* Bridge heads are drawn solid no matter how invisibility/transparency is set */
1442 AddSortableSpriteToDraw(psid->sprite, psid->pal, ti->x, ti->y, 16, 16, ti->tileh == SLOPE_FLAT ? 0 : 8, ti->z);
1443
1444 if (transport_type == TRANSPORT_ROAD) {
1445 uint offset = tunnelbridge_direction;
1446 int z = ti->z;
1447 if (ti->tileh != SLOPE_FLAT) {
1448 offset = (offset + 1) & 1;
1449 z += TILE_HEIGHT;
1450 } else {
1451 offset += 2;
1452 }
1453
1454 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1455 DrawBridgeRoadBits(ti->tile, ti->x, ti->y, z, offset, true);
1456
1457 EndSpriteCombine();
1458 } else if (transport_type == TRANSPORT_RAIL) {
1459 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1460 if (rti->UsesOverlay()) {
1461 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_BRIDGE);
1462 if (surface != 0) {
1463 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1464 AddSortableSpriteToDraw(surface + ((DiagDirToAxis(tunnelbridge_direction) == AXIS_X) ? RTBO_X : RTBO_Y), PAL_NONE, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1465 } else {
1466 AddSortableSpriteToDraw(surface + RTBO_SLOPE + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, 16, 16, 8, ti->z);
1467 }
1468 }
1469 /* Don't fallback to non-overlay sprite -- the spec states that
1470 * if an overlay is present then the bridge surface must be
1471 * present. */
1472 }
1473
1474 /* PBS debugging, draw reserved tracks darker */
1475 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1476 if (rti->UsesOverlay()) {
1477 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1478 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1479 AddSortableSpriteToDraw(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1480 } else {
1481 AddSortableSpriteToDraw(overlay + RTO_SLOPE_NE + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
1482 }
1483 } else {
1484 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1485 AddSortableSpriteToDraw(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1486 } else {
1487 AddSortableSpriteToDraw(rti->base_sprites.single_sloped + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
1488 }
1489 }
1490 }
1491
1492 EndSpriteCombine();
1493 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1494 DrawRailCatenary(ti);
1495 }
1496 }
1497
1498 DrawBridgeMiddle(ti);
1499 }
1500 }
1501
1502
1521 static BridgePieces CalcBridgePiece(uint north, uint south)
1522 {
1523 if (north == 1) {
1524 return BRIDGE_PIECE_NORTH;
1525 } else if (south == 1) {
1526 return BRIDGE_PIECE_SOUTH;
1527 } else if (north < south) {
1528 return north & 1 ? BRIDGE_PIECE_INNER_SOUTH : BRIDGE_PIECE_INNER_NORTH;
1529 } else if (north > south) {
1530 return south & 1 ? BRIDGE_PIECE_INNER_NORTH : BRIDGE_PIECE_INNER_SOUTH;
1531 } else {
1532 return north & 1 ? BRIDGE_PIECE_MIDDLE_EVEN : BRIDGE_PIECE_MIDDLE_ODD;
1533 }
1534 }
1535
1540 void DrawBridgeMiddle(const TileInfo *ti)
1541 {
1542 /* Sectional view of bridge bounding boxes:
1543 *
1544 * 1 2 1,2 = SpriteCombine of Bridge front/(back&floor) and RoadCatenary
1545 * 1 2 3 = empty helper BB
1546 * 1 7 2 4,5 = pillars under higher bridges
1547 * 1 6 88888 6 2 6 = elrail-pylons
1548 * 1 6 88888 6 2 7 = elrail-wire
1549 * 1 6 88888 6 2 <- TILE_HEIGHT 8 = rail-vehicle on bridge
1550 * 3333333333333 <- BB_Z_SEPARATOR
1551 * <- unused
1552 * 4 5 <- BB_HEIGHT_UNDER_BRIDGE
1553 * 4 5
1554 * 4 5
1555 *
1556 */
1557
1558 if (!IsBridgeAbove(ti->tile)) return;
1559
1560 TileIndex rampnorth = GetNorthernBridgeEnd(ti->tile);
1561 TileIndex rampsouth = GetSouthernBridgeEnd(ti->tile);
1562 TransportType transport_type = GetTunnelBridgeTransportType(rampsouth);
1563
1564 Axis axis = GetBridgeAxis(ti->tile);
1565 BridgePieces piece = CalcBridgePiece(
1566 GetTunnelBridgeLength(ti->tile, rampnorth) + 1,
1567 GetTunnelBridgeLength(ti->tile, rampsouth) + 1
1568 );
1569
1570 const PalSpriteID *psid;
1571 bool drawfarpillar;
1572 if (transport_type != TRANSPORT_WATER) {
1573 BridgeType type = GetBridgeType(rampsouth);
1574 drawfarpillar = !HasBit(GetBridgeSpec(type)->flags, 0);
1575
1576 uint base_offset;
1577 if (transport_type == TRANSPORT_RAIL) {
1578 base_offset = GetRailTypeInfo(GetRailType(rampsouth))->bridge_offset;
1579 } else {
1580 base_offset = 8;
1581 }
1582
1583 psid = base_offset + GetBridgeSpriteTable(type, piece);
1584 } else {
1585 drawfarpillar = true;
1586 psid = _aqueduct_sprites;
1587 }
1588
1589 if (axis != AXIS_X) psid += 4;
1590
1591 int x = ti->x;
1592 int y = ti->y;
1593 uint bridge_z = GetBridgePixelHeight(rampsouth);
1594 int z = bridge_z - BRIDGE_Z_START;
1595
1596 /* Add a bounding box that separates the bridge from things below it. */
1597 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, x, y, 16, 16, 1, bridge_z - TILE_HEIGHT + BB_Z_SEPARATOR);
1598
1599 /* Draw Trambits as SpriteCombine */
1600 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1601
1602 /* Draw floor and far part of bridge*/
1603 if (!IsInvisibilitySet(TO_BRIDGES)) {
1604 if (axis == AXIS_X) {
1605 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 1, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
1606 } else {
1607 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 1, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
1608 }
1609 }
1610
1611 psid++;
1612
1613 if (transport_type == TRANSPORT_ROAD) {
1614 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1615 DrawBridgeRoadBits(rampsouth, x, y, bridge_z, axis ^ 1, false);
1616 } else if (transport_type == TRANSPORT_RAIL) {
1617 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(rampsouth));
1618 if (rti->UsesOverlay() && !IsInvisibilitySet(TO_BRIDGES)) {
1619 SpriteID surface = GetCustomRailSprite(rti, rampsouth, RTSG_BRIDGE, TCX_ON_BRIDGE);
1620 if (surface != 0) {
1621 AddSortableSpriteToDraw(surface + axis, PAL_NONE, x, y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1622 }
1623 }
1624
1625 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && !IsInvisibilitySet(TO_BRIDGES) && HasTunnelBridgeReservation(rampnorth)) {
1626 if (rti->UsesOverlay()) {
1627 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1628 AddSortableSpriteToDraw(overlay + RTO_X + axis, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1629 } else {
1630 AddSortableSpriteToDraw(axis == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1631 }
1632 }
1633
1634 EndSpriteCombine();
1635
1636 if (HasRailCatenaryDrawn(GetRailType(rampsouth))) {
1637 DrawRailCatenaryOnBridge(ti);
1638 }
1639 }
1640
1641 /* draw roof, the component of the bridge which is logically between the vehicle and the camera */
1642 if (!IsInvisibilitySet(TO_BRIDGES)) {
1643 if (axis == AXIS_X) {
1644 y += 12;
1645 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 4, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 3, BRIDGE_Z_START);
1646 } else {
1647 x += 12;
1648 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 4, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 3, 0, BRIDGE_Z_START);
1649 }
1650 }
1651
1652 /* Draw TramFront as SpriteCombine */
1653 if (transport_type == TRANSPORT_ROAD) EndSpriteCombine();
1654
1655 /* Do not draw anything more if bridges are invisible */
1656 if (IsInvisibilitySet(TO_BRIDGES)) return;
1657
1658 psid++;
1659 DrawBridgePillars(psid, ti, axis, drawfarpillar, x, y, z);
1660 }
1661
1662
1663 static int GetSlopePixelZ_TunnelBridge(TileIndex tile, uint x, uint y)
1664 {
1665 int z;
1666 Slope tileh = GetTilePixelSlope(tile, &z);
1667
1668 x &= 0xF;
1669 y &= 0xF;
1670
1671 if (IsTunnel(tile)) {
1672 uint pos = (DiagDirToAxis(GetTunnelBridgeDirection(tile)) == AXIS_X ? y : x);
1673
1674 /* In the tunnel entrance? */
1675 if (5 <= pos && pos <= 10) return z;
1676 } else { // IsBridge(tile)
1677 DiagDirection dir = GetTunnelBridgeDirection(tile);
1678 uint pos = (DiagDirToAxis(dir) == AXIS_X ? y : x);
1679
1680 z += ApplyPixelFoundationToSlope(GetBridgeFoundation(tileh, DiagDirToAxis(dir)), &tileh);
1681
1682 /* On the bridge ramp? */
1683 if (5 <= pos && pos <= 10) {
1684 int delta;
1685
1686 if (tileh != SLOPE_FLAT) return z + TILE_HEIGHT;
1687
1688 switch (dir) {
1689 default: NOT_REACHED();
1690 case DIAGDIR_NE: delta = (TILE_SIZE - 1 - x) / 2; break;
1691 case DIAGDIR_SE: delta = y / 2; break;
1692 case DIAGDIR_SW: delta = x / 2; break;
1693 case DIAGDIR_NW: delta = (TILE_SIZE - 1 - y) / 2; break;
1694 }
1695 return z + 1 + delta;
1696 }
1697 }
1698
1699 return z + GetPartialPixelZ(x, y, tileh);
1700 }
1701
1702 static Foundation GetFoundation_TunnelBridge(TileIndex tile, Slope tileh)
1703 {
1704 return IsTunnel(tile) ? FOUNDATION_NONE : GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(tile)));
1705 }
1706
1707 static void GetTileDesc_TunnelBridge(TileIndex tile, TileDesc *td)
1708 {
1709 TransportType tt = GetTunnelBridgeTransportType(tile);
1710
1711 if (IsTunnel(tile)) {
1712 td->str = (tt == TRANSPORT_RAIL) ? STR_LAI_TUNNEL_DESCRIPTION_RAILROAD : STR_LAI_TUNNEL_DESCRIPTION_ROAD;
1713 } else { // IsBridge(tile)
1714 td->str = (tt == TRANSPORT_WATER) ? STR_LAI_BRIDGE_DESCRIPTION_AQUEDUCT : GetBridgeSpec(GetBridgeType(tile))->transport_name[tt];
1715 }
1716 td->owner[0] = GetTileOwner(tile);
1717
1718 Owner road_owner = INVALID_OWNER;
1719 Owner tram_owner = INVALID_OWNER;
1720 RoadType road_rt = GetRoadTypeRoad(tile);
1721 RoadType tram_rt = GetRoadTypeTram(tile);
1722 if (road_rt != INVALID_ROADTYPE) {
1723 const RoadTypeInfo *rti = GetRoadTypeInfo(road_rt);
1724 td->roadtype = rti->strings.name;
1725 td->road_speed = rti->max_speed / 2;
1726 road_owner = GetRoadOwner(tile, RTT_ROAD);
1727 }
1728 if (tram_rt != INVALID_ROADTYPE) {
1729 const RoadTypeInfo *rti = GetRoadTypeInfo(tram_rt);
1730 td->tramtype = rti->strings.name;
1731 td->tram_speed = rti->max_speed / 2;
1732 tram_owner = GetRoadOwner(tile, RTT_TRAM);
1733 }
1734
1735 /* Is there a mix of owners? */
1736 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
1737 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
1738 uint i = 1;
1739 if (road_owner != INVALID_OWNER) {
1740 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
1741 td->owner[i] = road_owner;
1742 i++;
1743 }
1744 if (tram_owner != INVALID_OWNER) {
1745 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
1746 td->owner[i] = tram_owner;
1747 }
1748 }
1749
1750 if (tt == TRANSPORT_RAIL) {
1751 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
1752 td->rail_speed = rti->max_speed;
1753 td->railtype = rti->strings.name;
1754
1755 if (!IsTunnel(tile)) {
1756 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1757 if (td->rail_speed == 0 || spd < td->rail_speed) {
1758 td->rail_speed = spd;
1759 }
1760 }
1761 } else if (tt == TRANSPORT_ROAD && !IsTunnel(tile)) {
1762 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1763 if (road_rt != INVALID_ROADTYPE && (td->road_speed == 0 || spd < td->road_speed)) td->road_speed = spd;
1764 if (tram_rt != INVALID_ROADTYPE && (td->tram_speed == 0 || spd < td->tram_speed)) td->tram_speed = spd;
1765 }
1766 }
1767
1768
1769 static void TileLoop_TunnelBridge(TileIndex tile)
1770 {
1771 bool snow_or_desert = HasTunnelBridgeSnowOrDesert(tile);
1772 switch (_settings_game.game_creation.landscape) {
1773 case LT_ARCTIC: {
1774 /* As long as we do not have a snow density, we want to use the density
1775 * from the entry edge. For tunnels this is the lowest point for bridges the highest point.
1776 * (Independent of foundations) */
1777 int z = IsBridge(tile) ? GetTileMaxZ(tile) : GetTileZ(tile);
1778 if (snow_or_desert != (z > GetSnowLine())) {
1779 SetTunnelBridgeSnowOrDesert(tile, !snow_or_desert);
1780 MarkTileDirtyByTile(tile);
1781 }
1782 break;
1783 }
1784
1785 case LT_TROPIC:
1786 if (GetTropicZone(tile) == TROPICZONE_DESERT && !snow_or_desert) {
1787 SetTunnelBridgeSnowOrDesert(tile, true);
1788 MarkTileDirtyByTile(tile);
1789 }
1790 break;
1791
1792 default:
1793 break;
1794 }
1795 }
1796
1797 static TrackStatus GetTileTrackStatus_TunnelBridge(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
1798 {
1799 TransportType transport_type = GetTunnelBridgeTransportType(tile);
1800 if (transport_type != mode || (transport_type == TRANSPORT_ROAD && !HasTileRoadType(tile, (RoadTramType)sub_mode))) return 0;
1801
1802 DiagDirection dir = GetTunnelBridgeDirection(tile);
1803 if (side != INVALID_DIAGDIR && side != ReverseDiagDir(dir)) return 0;
1804 return CombineTrackStatus(TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir)), TRACKDIR_BIT_NONE);
1805 }
1806
1807 static void ChangeTileOwner_TunnelBridge(TileIndex tile, Owner old_owner, Owner new_owner)
1808 {
1809 TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
1810 /* Set number of pieces to zero if it's the southern tile as we
1811 * don't want to update the infrastructure counts twice. */
1812 uint num_pieces = tile < other_end ? (GetTunnelBridgeLength(tile, other_end) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR : 0;
1813
1814 FOR_ALL_ROADTRAMTYPES(rtt) {
1815 /* Update all roadtypes, no matter if they are present */
1816 if (GetRoadOwner(tile, rtt) == old_owner) {
1817 RoadType rt = GetRoadType(tile, rtt);
1818 if (rt != INVALID_ROADTYPE) {
1819 /* Update company infrastructure counts. A full diagonal road tile has two road bits.
1820 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1821 Company::Get(old_owner)->infrastructure.road[rt] -= num_pieces * 2;
1822 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += num_pieces * 2;
1823 }
1824
1825 SetRoadOwner(tile, rtt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
1826 }
1827 }
1828
1829 if (!IsTileOwner(tile, old_owner)) return;
1830
1831 /* Update company infrastructure counts for rail and water as well.
1832 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1833 TransportType tt = GetTunnelBridgeTransportType(tile);
1834 Company *old = Company::Get(old_owner);
1835 if (tt == TRANSPORT_RAIL) {
1836 old->infrastructure.rail[GetRailType(tile)] -= num_pieces;
1837 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.rail[GetRailType(tile)] += num_pieces;
1838 } else if (tt == TRANSPORT_WATER) {
1839 old->infrastructure.water -= num_pieces;
1840 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.water += num_pieces;
1841 }
1842
1843 if (new_owner != INVALID_OWNER) {
1844 SetTileOwner(tile, new_owner);
1845 } else {
1846 if (tt == TRANSPORT_RAIL) {
1847 /* Since all of our vehicles have been removed, it is safe to remove the rail
1848 * bridge / tunnel. */
1849 CommandCost ret = DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
1850 assert(ret.Succeeded());
1851 } else {
1852 /* In any other case, we can safely reassign the ownership to OWNER_NONE. */
1853 SetTileOwner(tile, OWNER_NONE);
1854 }
1855 }
1856 }
1857
1863 static const byte TUNNEL_SOUND_FRAME = 1;
1864
1873 extern const byte _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12};
1874
1875 static VehicleEnterTileStatus VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
1876 {
1877 int z = GetSlopePixelZ(x, y) - v->z_pos;
1878
1879 if (abs(z) > 2) return VETSB_CANNOT_ENTER;
1880 /* Direction into the wormhole */
1881 const DiagDirection dir = GetTunnelBridgeDirection(tile);
1882 /* Direction of the vehicle */
1883 const DiagDirection vdir = DirToDiagDir(v->direction);
1884 /* New position of the vehicle on the tile */
1885 byte pos = (DiagDirToAxis(vdir) == AXIS_X ? x : y) & TILE_UNIT_MASK;
1886 /* Number of units moved by the vehicle since entering the tile */
1887 byte frame = (vdir == DIAGDIR_NE || vdir == DIAGDIR_NW) ? TILE_SIZE - 1 - pos : pos;
1888
1889 if (IsTunnel(tile)) {
1890 if (v->type == VEH_TRAIN) {
1891 Train *t = Train::From(v);
1892
1893 if (t->track != TRACK_BIT_WORMHOLE && dir == vdir) {
1894 if (t->IsFrontEngine() && frame == TUNNEL_SOUND_FRAME) {
1895 if (!PlayVehicleSound(t, VSE_TUNNEL) && RailVehInfo(t->engine_type)->engclass == 0) {
1896 SndPlayVehicleFx(SND_05_TRAIN_THROUGH_TUNNEL, v);
1897 }
1898 return VETSB_CONTINUE;
1899 }
1900 if (frame == _tunnel_visibility_frame[dir]) {
1901 t->tile = tile;
1902 t->track = TRACK_BIT_WORMHOLE;
1903 t->vehstatus |= VS_HIDDEN;
1904 return VETSB_ENTERED_WORMHOLE;
1905 }
1906 }
1907
1908 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
1909 /* We're at the tunnel exit ?? */
1910 t->tile = tile;
1911 t->track = DiagDirToDiagTrackBits(vdir);
1912 assert(t->track);
1913 t->vehstatus &= ~VS_HIDDEN;
1914 return VETSB_ENTERED_WORMHOLE;
1915 }
1916 } else if (v->type == VEH_ROAD) {
1917 RoadVehicle *rv = RoadVehicle::From(v);
1918
1919 /* Enter tunnel? */
1920 if (rv->state != RVSB_WORMHOLE && dir == vdir) {
1921 if (frame == _tunnel_visibility_frame[dir]) {
1922 /* Frame should be equal to the next frame number in the RV's movement */
1923 assert(frame == rv->frame + 1);
1924 rv->tile = tile;
1925 rv->state = RVSB_WORMHOLE;
1926 rv->vehstatus |= VS_HIDDEN;
1927 return VETSB_ENTERED_WORMHOLE;
1928 } else {
1929 return VETSB_CONTINUE;
1930 }
1931 }
1932
1933 /* We're at the tunnel exit ?? */
1934 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
1935 rv->tile = tile;
1936 rv->state = DiagDirToDiagTrackdir(vdir);
1937 rv->frame = frame;
1938 rv->vehstatus &= ~VS_HIDDEN;
1939 return VETSB_ENTERED_WORMHOLE;
1940 }
1941 }
1942 } else { // IsBridge(tile)
1943 if (v->type != VEH_SHIP) {
1944 /* modify speed of vehicle */
1945 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1946
1947 if (v->type == VEH_ROAD) spd *= 2;
1948 Vehicle *first = v->First();
1949 first->cur_speed = std::min(first->cur_speed, spd);
1950 }
1951
1952 if (vdir == dir) {
1953 /* Vehicle enters bridge at the last frame inside this tile. */
1954 if (frame != TILE_SIZE - 1) return VETSB_CONTINUE;
1955 switch (v->type) {
1956 case VEH_TRAIN: {
1957 Train *t = Train::From(v);
1958 t->track = TRACK_BIT_WORMHOLE;
1959 ClrBit(t->gv_flags, GVF_GOINGUP_BIT);
1960 ClrBit(t->gv_flags, GVF_GOINGDOWN_BIT);
1961 break;
1962 }
1963
1964 case VEH_ROAD: {
1965 RoadVehicle *rv = RoadVehicle::From(v);
1966 rv->state = RVSB_WORMHOLE;
1967 /* There are no slopes inside bridges / tunnels. */
1968 ClrBit(rv->gv_flags, GVF_GOINGUP_BIT);
1969 ClrBit(rv->gv_flags, GVF_GOINGDOWN_BIT);
1970 break;
1971 }
1972
1973 case VEH_SHIP:
1974 Ship::From(v)->state = TRACK_BIT_WORMHOLE;
1975 break;
1976
1977 default: NOT_REACHED();
1978 }
1979 return VETSB_ENTERED_WORMHOLE;
1980 } else if (vdir == ReverseDiagDir(dir)) {
1981 v->tile = tile;
1982 switch (v->type) {
1983 case VEH_TRAIN: {
1984 Train *t = Train::From(v);
1985 if (t->track == TRACK_BIT_WORMHOLE) {
1986 t->track = DiagDirToDiagTrackBits(vdir);
1987 return VETSB_ENTERED_WORMHOLE;
1988 }
1989 break;
1990 }
1991
1992 case VEH_ROAD: {
1993 RoadVehicle *rv = RoadVehicle::From(v);
1994 if (rv->state == RVSB_WORMHOLE) {
1995 rv->state = DiagDirToDiagTrackdir(vdir);
1996 rv->frame = 0;
1997 return VETSB_ENTERED_WORMHOLE;
1998 }
1999 break;
2000 }
2001
2002 case VEH_SHIP: {
2003 Ship *ship = Ship::From(v);
2004 if (ship->state == TRACK_BIT_WORMHOLE) {
2005 ship->state = DiagDirToDiagTrackBits(vdir);
2006 return VETSB_ENTERED_WORMHOLE;
2007 }
2008 break;
2009 }
2010
2011 default: NOT_REACHED();
2012 }
2013 }
2014 }
2015 return VETSB_CONTINUE;
2016 }
2017
2018 static CommandCost TerraformTile_TunnelBridge(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
2019 {
2020 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && IsBridge(tile) && GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) {
2021 DiagDirection direction = GetTunnelBridgeDirection(tile);
2022 Axis axis = DiagDirToAxis(direction);
2023 CommandCost res;
2024 int z_old;
2025 Slope tileh_old = GetTileSlope(tile, &z_old);
2026
2027 /* Check if new slope is valid for bridges in general (so we can safely call GetBridgeFoundation()) */
2028 if ((direction == DIAGDIR_NW) || (direction == DIAGDIR_NE)) {
2029 CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, &tileh_old, &z_old);
2030 res = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, &tileh_new, &z_new);
2031 } else {
2032 CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, &tileh_old, &z_old);
2033 res = CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, &tileh_new, &z_new);
2034 }
2035
2036 /* Surface slope is valid and remains unchanged? */
2037 if (res.Succeeded() && (z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
2038 }
2039
2040 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
2041 }
2042
2043 extern const TileTypeProcs _tile_type_tunnelbridge_procs = {
2044 DrawTile_TunnelBridge, // draw_tile_proc
2045 GetSlopePixelZ_TunnelBridge, // get_slope_z_proc
2046 ClearTile_TunnelBridge, // clear_tile_proc
2047 nullptr, // add_accepted_cargo_proc
2048 GetTileDesc_TunnelBridge, // get_tile_desc_proc
2049 GetTileTrackStatus_TunnelBridge, // get_tile_track_status_proc
2050 nullptr, // click_tile_proc
2051 nullptr, // animate_tile_proc
2052 TileLoop_TunnelBridge, // tile_loop_proc
2053 ChangeTileOwner_TunnelBridge, // change_tile_owner_proc
2054 nullptr, // add_produced_cargo_proc
2055 VehicleEnter_TunnelBridge, // vehicle_enter_tile_proc
2056 GetFoundation_TunnelBridge, // get_foundation_proc
2057 TerraformTile_TunnelBridge, // terraform_tile_proc
2058 };
BRIDGE_Z_START
static const int BRIDGE_Z_START
Z position of the bridge sprites relative to bridge height (downwards)
Definition: tunnelbridge_cmd.cpp:53
RoadVehicle
Buses, trucks and trams belong to this class.
Definition: roadveh.h:107
DoClearTunnel
static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
Remove a tunnel from the game, update town rating, etc.
Definition: tunnelbridge_cmd.cpp:857
TileInfo::z
int z
Height.
Definition: tile_cmd.h:47
MP_CLEAR
@ MP_CLEAR
A tile without any structures, i.e. grass, rocks, farm fields etc.
Definition: tile_type.h:41
SPRITE_MASK
@ SPRITE_MASK
The mask to for the main sprite.
Definition: sprites.h:1544
TRACK_BIT_WORMHOLE
@ TRACK_BIT_WORMHOLE
Bitflag for a wormhole (used for tunnels)
Definition: track_type.h:55
DIAGDIR_SE
@ DIAGDIR_SE
Southeast.
Definition: direction_type.h:80
PlayVehicleSound
bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
Checks whether a NewGRF wants to play a different vehicle sound effect.
Definition: newgrf_sound.cpp:185
CompanyProperties::is_ai
bool is_ai
If true, the company is (also) controlled by the computer (a NoAI program).
Definition: company_base.h:94
tunnelbridge.h
VETSB_CANNOT_ENTER
@ VETSB_CANNOT_ENTER
The vehicle cannot enter the tile.
Definition: tile_cmd.h:37
TileIndex
uint32 TileIndex
The index/ID of a Tile.
Definition: tile_type.h:78
TROPICZONE_DESERT
@ TROPICZONE_DESERT
Tile is desert.
Definition: tile_type.h:71
RoadTypeInfo
Definition: road.h:75
RoadVehicle::state
byte state
Definition: roadveh.h:109
TO_CATENARY
@ TO_CATENARY
catenary
Definition: transparency.h:30
sound_func.h
RailtypeInfo::single_x
SpriteID single_x
single piece of rail in X direction, without ground
Definition: rail.h:134
Cheats::crossing_tunnels
Cheat crossing_tunnels
allow tunnels that cross each other
Definition: cheat_type.h:30
Cheats::magic_bulldozer
Cheat magic_bulldozer
dynamite industries, objects
Definition: cheat_type.h:27
RailtypeInfo::max_speed
uint16 max_speed
Maximum speed for vehicles travelling on this rail type.
Definition: rail.h:228
DoCommand
CommandCost DoCommand(const CommandContainer *container, DoCommandFlag flags)
Shorthand for calling the long DoCommand with a container.
Definition: command.cpp:450
Pool::PoolItem<&_company_pool >::Get
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:329
GetOtherBridgeEnd
TileIndex GetOtherBridgeEnd(TileIndex tile)
Starting at one bridge end finds the other bridge end.
Definition: bridge_map.cpp:59
TileOffsByDiagDir
static TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
Convert a DiagDirection to a TileIndexDiff.
Definition: map_func.h:341
water.h
GetTileMaxZ
int GetTileMaxZ(TileIndex t)
Get top height of the tile inside the map.
Definition: tile_map.cpp:141
GB
static uint GB(const T x, const uint8 s, const uint8 n)
Fetch n bits from x, started at bit s.
Definition: bitmath_func.hpp:32
ResetBridges
void ResetBridges()
Reset the data been eventually changed by the grf loaded.
Definition: tunnelbridge_cmd.cpp:83
DrawRoadOverlays
void DrawRoadOverlays(const TileInfo *ti, PaletteID pal, const RoadTypeInfo *road_rti, const RoadTypeInfo *tram_rti, uint road_offset, uint tram_offset)
Draw road underlay and overlay sprites.
Definition: road_cmd.cpp:1512
train.h
GetBridgeType
static BridgeType GetBridgeType(TileIndex t)
Determines the type of bridge on a tile.
Definition: bridge_map.h:56
BB_Z_SEPARATOR
static const uint BB_Z_SEPARATOR
Separates the bridge/tunnel from the things under/above it.
Definition: viewport_type.h:93
HasTileWaterClass
static bool HasTileWaterClass(TileIndex t)
Checks whether the tile has an waterclass associated.
Definition: water_map.h:95
CheckBridgeSlope
static CommandCost CheckBridgeSlope(BridgePieces bridge_piece, Axis axis, Slope *tileh, int *z)
Determines the foundation for the bridge head, and tests if the resulting slope is valid.
Definition: tunnelbridge_cmd.cpp:170
command_func.h
VSE_TUNNEL
@ VSE_TUNNEL
Train entering a tunnel.
Definition: newgrf_sound.h:20
ObjectSpec
Allow incrementing of ObjectClassID variables.
Definition: newgrf_object.h:58
YapfNotifyTrackLayoutChange
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
TileInfo::x
uint x
X position of the tile in unit coordinates.
Definition: tile_cmd.h:43
RoadTypeInfo::strings
struct RoadTypeInfo::@44 strings
Strings associated with the rail type.
Pool::PoolItem<&_company_pool >::GetIfValid
static Titem * GetIfValid(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:340
CMD_ERROR
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition: command_func.h:23
BridgeSpec::avail_year
Year avail_year
the year where it becomes available
Definition: bridge.h:42
ClosestTownFromTile
Town * ClosestTownFromTile(TileIndex tile, uint threshold)
Return the town closest (in distance or ownership) to a given tile, within a given threshold.
Definition: town_cmd.cpp:3595
TileInfo
Tile information, used while rendering the tile.
Definition: tile_cmd.h:42
RATING_TUNNEL_BRIDGE_MINIMUM
@ RATING_TUNNEL_BRIDGE_MINIMUM
minimum rating after removing tunnel or bridge
Definition: town_type.h:58
GameCreationSettings::landscape
byte landscape
the landscape we're currently in
Definition: settings_type.h:305
TileDesc::railtype
StringID railtype
Type of rail on the tile.
Definition: tile_cmd.h:63
company_base.h
HasBridgeFlatRamp
bool HasBridgeFlatRamp(Slope tileh, Axis axis)
Determines if the track on a bridge ramp is flat or goes up/down.
Definition: tunnelbridge_cmd.cpp:142
IsTransparencySet
static bool IsTransparencySet(TransparencyOption to)
Check if the transparency option bit is set and if we aren't in the game menu (there's never transpar...
Definition: transparency.h:48
_cur_year
Year _cur_year
Current year, starting at 0.
Definition: date.cpp:26
TRANSPORT_RAIL
@ TRANSPORT_RAIL
Transport by train.
Definition: transport_type.h:27
tunnelbridge_map.h
TileDesc::owner
Owner owner[4]
Name of the owner(s)
Definition: tile_cmd.h:53
company_gui.h
Vehicle::z_pos
int32 z_pos
z coordinate.
Definition: vehicle_base.h:280
OtherAxis
static Axis OtherAxis(Axis a)
Select the other axis as provided.
Definition: direction_func.h:197
elrail_func.h
SND_05_TRAIN_THROUGH_TUNNEL
@ SND_05_TRAIN_THROUGH_TUNNEL
3 == 0x03 Train enters tunnel: steam engine
Definition: sound_type.h:42
Price
Price
Enumeration of all base prices for use with Prices.
Definition: economy_type.h:74
INVALID_ROADTYPE
@ INVALID_ROADTYPE
flag for invalid roadtype
Definition: road_type.h:27
DrawPillar
static void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
Draw a single pillar sprite.
Definition: tunnelbridge_cmd.cpp:1056
DiagDirToAxis
static Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
Definition: direction_func.h:214
MakeRailTunnel
static void MakeRailTunnel(TileIndex t, Owner o, DiagDirection d, RailType r)
Makes a rail tunnel entrance.
Definition: tunnel_map.h:73
Vehicle::vehstatus
byte vehstatus
Status.
Definition: vehicle_base.h:326
DIAGDIR_END
@ DIAGDIR_END
Used for iterations.
Definition: direction_type.h:83
TownCache::squared_town_zone_radius
uint32 squared_town_zone_radius[HZB_END]
UpdateTownRadius updates this given the house count.
Definition: town.h:45
CmdBuildBridge
CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build a Bridge.
Definition: tunnelbridge_cmd.cpp:260
CompanyInfrastructure::water
uint32 water
Count of company owned track bits for canals.
Definition: company_base.h:34
Pool::PoolItem::index
Tindex index
Index of this pool item.
Definition: pool_type.hpp:227
BridgeSpec::sprite_table
PalSpriteID ** sprite_table
table of sprites for drawing the bridge
Definition: bridge.h:51
PalSpriteID::sprite
SpriteID sprite
The 'real' sprite.
Definition: gfx_type.h:23
GetBridgeHeight
int GetBridgeHeight(TileIndex t)
Get the height ('z') of a bridge.
Definition: bridge_map.cpp:70
MakeAqueductBridgeRamp
static void MakeAqueductBridgeRamp(TileIndex t, Owner o, DiagDirection d)
Make a bridge ramp for aqueducts.
Definition: bridge_map.h:181
RailtypeInfo::single_y
SpriteID single_y
single piece of rail in Y direction, without ground
Definition: rail.h:135
HasBit
static bool HasBit(const T x, const uint8 y)
Checks if a bit in a value is set.
Definition: bitmath_func.hpp:103
TileDesc::tram_speed
uint16 tram_speed
Speed limit of tram (bridges and track)
Definition: tile_cmd.h:68
GetTileZ
int GetTileZ(TileIndex tile)
Get bottom height of the tile.
Definition: tile_map.cpp:121
ship.h
RailtypeInfo
This struct contains all the info that is needed to draw and construct tracks.
Definition: rail.h:124
DiagDirToDiagTrackdir
static Trackdir DiagDirToDiagTrackdir(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal trackdir that runs in that direction.
Definition: track_func.h:545
ClrBit
static T ClrBit(T &x, const uint8 y)
Clears a bit in a variable.
Definition: bitmath_func.hpp:151
VETSB_CONTINUE
@ VETSB_CONTINUE
Bit sets of the above specified bits.
Definition: tile_cmd.h:34
IsTunnelInWayDir
bool IsTunnelInWayDir(TileIndex tile, int z, DiagDirection dir)
Is there a tunnel in the way in the given direction?
Definition: tunnel_map.cpp:48
MP_RAILWAY
@ MP_RAILWAY
A railway.
Definition: tile_type.h:42
BB_HEIGHT_UNDER_BRIDGE
static const uint BB_HEIGHT_UNDER_BRIDGE
Some values for constructing bounding boxes (BB).
Definition: viewport_type.h:92
SetRoadOwner
static void SetRoadOwner(TileIndex t, RoadTramType rtt, Owner o)
Set the owner of a specific road type.
Definition: road_map.h:250
GetPartialPixelZ
uint GetPartialPixelZ(int x, int y, Slope corners)
Determines height at given coordinate of a slope.
Definition: landscape.cpp:215
TILE_SIZE
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:13
RailtypeInfo::single_sloped
SpriteID single_sloped
single piece of rail for slopes
Definition: rail.h:140
MakeRoadTunnel
static void MakeRoadTunnel(TileIndex t, Owner o, DiagDirection d, RoadType road_rt, RoadType tram_rt)
Makes a road tunnel entrance.
Definition: tunnel_map.h:50
TileInfo::y
uint y
Y position of the tile in unit coordinates.
Definition: tile_cmd.h:44
_settings_client
ClientSettings _settings_client
The current settings for this game.
Definition: settings.cpp:79
Town::xy
TileIndex xy
town center tile
Definition: town.h:51
IsCoast
static bool IsCoast(TileIndex t)
Is it a coast tile?
Definition: water_map.h:195
DrawRailCatenaryOnBridge
void DrawRailCatenaryOnBridge(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:504
town.h
TileY
static uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:215
DIAGDIR_NW
@ DIAGDIR_NW
Northwest.
Definition: direction_type.h:82
Company::infrastructure
CompanyInfrastructure infrastructure
NOSAVE: Counts of company owned infrastructure.
Definition: company_base.h:126
DrawBridgeMiddle
void DrawBridgeMiddle(const TileInfo *ti)
Draw the middle bits of a bridge.
Definition: tunnelbridge_cmd.cpp:1540
CheckAllowRemoveTunnelBridge
static CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
Are we allowed to remove the tunnel or bridge at tile?
Definition: tunnelbridge_cmd.cpp:809
TransportType
TransportType
Available types of transport.
Definition: transport_type.h:19
VEH_ROAD
@ VEH_ROAD
Road vehicle type.
Definition: vehicle_type.h:25
Vehicle::cur_speed
uint16 cur_speed
current speed
Definition: vehicle_base.h:302
Vehicle
Vehicle data structure.
Definition: vehicle_base.h:222
Owner
Owner
Enum for all companies/owners.
Definition: company_type.h:18
BridgeSpec::speed
uint16 speed
maximum travel speed (1 unit = 1/1.6 mph = 1 km-ish/h)
Definition: bridge.h:46
DC_EXEC
@ DC_EXEC
execute the given command
Definition: command_type.h:348
RailClearCost
static Money RailClearCost(RailType railtype)
Returns the 'cost' of clearing the specified railtype.
Definition: rail.h:383
SubSprite
Used to only draw a part of the sprite.
Definition: gfx_type.h:222
CheckforTownRating
CommandCost CheckforTownRating(DoCommandFlag flags, Town *t, TownRatingCheckType type)
Does the town authority allow the (destructive) action of the current company?
Definition: town_cmd.cpp:3711
MP_ROAD
@ MP_ROAD
A tile with road (or tram tracks)
Definition: tile_type.h:43
TileDesc
Tile description for the 'land area information' tool.
Definition: tile_cmd.h:51
SetDParam
static void SetDParam(uint n, uint64 v)
Set a string parameter v at index n in the global string parameter array.
Definition: strings_func.h:199
DoCommandFlag
DoCommandFlag
List of flags for a command.
Definition: command_type.h:346
Foundation
Foundation
Enumeration for Foundations.
Definition: slope_type.h:93
FlatteningFoundation
static Foundation FlatteningFoundation(Slope s)
Returns the foundation needed to flatten a slope.
Definition: slope_func.h:369
CommandCost::Succeeded
bool Succeeded() const
Did this command succeed?
Definition: command_type.h:150
SlopeToSpriteOffset
static uint SlopeToSpriteOffset(Slope s)
Returns the Sprite offset for a given Slope.
Definition: slope_func.h:415
object_base.h
pbs.h
TUNNEL_SOUND_FRAME
static const byte TUNNEL_SOUND_FRAME
Frame when the 'enter tunnel' sound should be played.
Definition: tunnelbridge_cmd.cpp:1863
TileX
static uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:205
GameSettings::game_creation
GameCreationSettings game_creation
settings used during the creation of a game (map)
Definition: settings_type.h:560
SLOPE_NW
@ SLOPE_NW
north and west corner are raised
Definition: slope_type.h:55
TileInfo::tileh
Slope tileh
Slope of the tile.
Definition: tile_cmd.h:45
SpriteID
uint32 SpriteID
The number of a sprite, without mapping bits and colourtables.
Definition: gfx_type.h:17
GVF_GOINGDOWN_BIT
@ GVF_GOINGDOWN_BIT
Vehicle is currently going downhill. (Cached track information for acceleration)
Definition: ground_vehicle.hpp:53
RTO_SLOPE_NE
@ RTO_SLOPE_NE
Piece of rail on slope with north-east raised.
Definition: rail.h:74
SLOPE_FLAT
@ SLOPE_FLAT
a flat tile
Definition: slope_type.h:49
BridgeSpec
Struct containing information about a single bridge type.
Definition: bridge.h:41
RailtypeInfo::name
StringID name
Name of this rail type.
Definition: rail.h:173
DrawPillarColumn
static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
Draw two bridge pillars (north and south).
Definition: tunnelbridge_cmd.cpp:1073
TRANSPORT_ROAD
@ TRANSPORT_ROAD
Transport by road vehicle.
Definition: transport_type.h:28
GetRailTypeInfo
static const RailtypeInfo * GetRailTypeInfo(RailType railtype)
Returns a pointer to the Railtype information for a given railtype.
Definition: rail.h:304
ValParamRailtype
bool ValParamRailtype(const RailType rail)
Validate functions for rail building.
Definition: rail.cpp:206
GetCustomRoadSprite
SpriteID GetCustomRoadSprite(const RoadTypeInfo *rti, TileIndex tile, RoadTypeSpriteGroup rtsg, TileContext context, uint *num_results)
Get the sprite to draw for the given tile.
Definition: newgrf_roadtype.cpp:120
TO_BRIDGES
@ TO_BRIDGES
bridges
Definition: transparency.h:28
GetBridgeSpec
static const BridgeSpec * GetBridgeSpec(BridgeType i)
Get the specification of a bridge type.
Definition: bridge.h:65
RTBO_Y
@ RTBO_Y
Piece of rail in Y direction.
Definition: rail.h:91
DIAGDIR_SW
@ DIAGDIR_SW
Southwest.
Definition: direction_type.h:81
CheckForDockingTile
void CheckForDockingTile(TileIndex t)
Mark the supplied tile as a docking tile if it is suitable for docking.
Definition: water_cmd.cpp:182
VS_HIDDEN
@ VS_HIDDEN
Vehicle is not visible.
Definition: vehicle_base.h:30
TILE_UNIT_MASK
static const uint TILE_UNIT_MASK
For masking in/out the inner-tile world coordinate units.
Definition: tile_type.h:14
CheckOwnership
CommandCost CheckOwnership(Owner owner, TileIndex tile)
Check whether the current owner owns something.
Definition: company_cmd.cpp:311
DirToDiagDir
static DiagDirection DirToDiagDir(Direction dir)
Convert a Direction to a DiagDirection.
Definition: direction_func.h:166
AXIS_Y
@ AXIS_Y
The y axis.
Definition: direction_type.h:125
return_cmd_error
#define return_cmd_error(errcode)
Returns from a function with a specific StringID as error.
Definition: command_func.h:33
_tunnel_visibility_frame
const byte _tunnel_visibility_frame[DIAGDIR_END]
Frame when a vehicle should be hidden in a tunnel with a certain direction.
EXPENSES_CONSTRUCTION
@ EXPENSES_CONSTRUCTION
Construction costs.
Definition: economy_type.h:158
RailType
RailType
Enumeration for all possible railtypes.
Definition: rail_type.h:27
IsBridgeTile
static bool IsBridgeTile(TileIndex t)
checks if there is a bridge on this tile
Definition: bridge_map.h:35
RailtypeInfo::tunnel
SpriteID tunnel
tunnel sprites base
Definition: rail.h:142
CommandCost
Common return value for all commands.
Definition: command_type.h:23
GetSnowLine
byte GetSnowLine()
Get the current snow line, either variable or static.
Definition: landscape.cpp:644
HasTileWaterGround
static bool HasTileWaterGround(TileIndex t)
Checks whether the tile has water at the ground.
Definition: water_map.h:344
cmd_helper.h
TileHeight
static uint TileHeight(TileIndex tile)
Returns the height of a tile.
Definition: tile_map.h:29
CMD_TERRAFORM_LAND
@ CMD_TERRAFORM_LAND
terraform a tile
Definition: command_type.h:186
clear_func.h
AxisToTrack
static Track AxisToTrack(Axis a)
Convert an Axis to the corresponding Track AXIS_X -> TRACK_X AXIS_Y -> TRACK_Y Uses the fact that the...
Definition: track_func.h:74
MAX_BRIDGES
static const uint MAX_BRIDGES
Maximal number of available bridge specs.
Definition: bridge.h:34
RTSG_BRIDGE
@ RTSG_BRIDGE
Bridge surface images.
Definition: rail.h:53
DirtyCompanyInfrastructureWindows
void DirtyCompanyInfrastructureWindows(CompanyID company)
Redraw all windows with company infrastructure counts.
Definition: company_gui.cpp:2762
_bridge
BridgeSpec _bridge[MAX_BRIDGES]
The specification of all bridges.
Definition: tunnelbridge_cmd.cpp:49
CalcClosestTownFromTile
Town * CalcClosestTownFromTile(TileIndex tile, uint threshold=UINT_MAX)
Return the town closest to the given tile within threshold.
Definition: town_cmd.cpp:3577
TrackBitsToTrackdirBits
static TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
Converts TrackBits to TrackdirBits while allowing both directions.
Definition: track_func.h:327
GVF_GOINGUP_BIT
@ GVF_GOINGUP_BIT
Vehicle is currently going uphill. (Cached track information for acceleration)
Definition: ground_vehicle.hpp:52
TileIndexDiff
int32 TileIndexDiff
An offset value between to tiles.
Definition: map_func.h:154
Vehicle::tile
TileIndex tile
Current tile index.
Definition: vehicle_base.h:240
SetBridgeMiddle
static void SetBridgeMiddle(TileIndex t, Axis a)
Set that there is a bridge over the given axis.
Definition: bridge_map.h:114
autoslope.h
Vehicle::engine_type
EngineID engine_type
The type of engine used for this vehicle.
Definition: vehicle_base.h:297
TileDesc::roadtype
StringID roadtype
Type of road on the tile.
Definition: tile_cmd.h:65
MP_OBJECT
@ MP_OBJECT
Contains objects such as transmitters and owned land.
Definition: tile_type.h:51
HasSlopeHighestCorner
static bool HasSlopeHighestCorner(Slope s)
Tests if a slope has a highest corner (i.e.
Definition: slope_func.h:113
_cheats
Cheats _cheats
All the cheats.
Definition: cheat.cpp:16
ClearedObjectArea::first_tile
TileIndex first_tile
The first tile being cleared, which then causes the whole object to be cleared.
Definition: object_base.h:85
INVALID_OWNER
@ INVALID_OWNER
An invalid owner.
Definition: company_type.h:29
MP_WATER
@ MP_WATER
Water tile.
Definition: tile_type.h:47
CommandCost::Failed
bool Failed() const
Did this command fail?
Definition: command_type.h:159
station_func.h
GetRoadside
static Roadside GetRoadside(TileIndex tile)
Get the decorations of a road.
Definition: road_map.h:493
IsInvisibilitySet
static bool IsInvisibilitySet(TransparencyOption to)
Check if the invisibility option bit is set and if we aren't in the game menu (there's never transpar...
Definition: transparency.h:59
ROADSIDE_PAVED
@ ROADSIDE_PAVED
Road with paved sidewalks.
Definition: road_map.h:480
ConstructionSettings::max_bridge_height
byte max_bridge_height
maximum height of bridges
Definition: settings_type.h:321
HasRoadCatenaryDrawn
static bool HasRoadCatenaryDrawn(RoadType roadtype)
Test if we should draw road catenary.
Definition: road_func.h:145
GetNorthernBridgeEnd
TileIndex GetNorthernBridgeEnd(TileIndex t)
Finds the northern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:39
EndSpriteCombine
void EndSpriteCombine()
Terminates a block of sprites started by StartSpriteCombine.
Definition: viewport.cpp:766
TUNNELBRIDGE_TRACKBIT_FACTOR
static const uint TUNNELBRIDGE_TRACKBIT_FACTOR
Multiplier for how many regular track bits a tunnel/bridge counts.
Definition: economy_type.h:222
Vehicle::IsFrontEngine
bool IsFrontEngine() const
Check if the vehicle is a front engine.
Definition: vehicle_base.h:895
HasTileRoadType
static bool HasTileRoadType(TileIndex t, RoadTramType rtt)
Check if a tile has a road or a tram road type.
Definition: road_map.h:210
_settings_game
GameSettings _settings_game
Game settings of a running game or the scenario editor.
Definition: settings.cpp:80
DiagDirToDiagTrack
static Track DiagDirToDiagTrack(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track incidating with that diagdir.
Definition: track_func.h:520
GetTropicZone
static TropicZone GetTropicZone(TileIndex tile)
Get the tropic zone.
Definition: tile_map.h:238
RailBuildCost
static Money RailBuildCost(RailType railtype)
Returns the cost of building the specified railtype.
Definition: rail.h:372
_local_company
CompanyID _local_company
Company controlled by the human player at this client. Can also be COMPANY_SPECTATOR.
Definition: company_cmd.cpp:46
safeguards.h
CombineTrackStatus
static TrackStatus CombineTrackStatus(TrackdirBits trackdirbits, TrackdirBits red_signals)
Builds a TrackStatus.
Definition: track_func.h:396
Train
'Train' is either a loco or a wagon.
Definition: train.h:85
IsValidTile
static bool IsValidTile(TileIndex tile)
Checks if a tile is valid.
Definition: tile_map.h:161
FreeTrainTrackReservation
void FreeTrainTrackReservation(const Train *v)
Free the reserved path in front of a vehicle.
Definition: train_cmd.cpp:2243
CommandCost::GetCost
Money GetCost() const
The costs as made up to this moment.
Definition: command_type.h:82
ReverseDiagDir
static DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Definition: direction_func.h:118
GetTileSlope
Slope GetTileSlope(TileIndex tile, int *h)
Return the slope of a given tile inside the map.
Definition: tile_map.cpp:59
IsBridge
static bool IsBridge(TileIndex t)
Checks if this is a bridge, instead of a tunnel.
Definition: bridge_map.h:24
IsTileOwner
static bool IsTileOwner(TileIndex tile, Owner owner)
Checks if a tile belongs to the given owner.
Definition: tile_map.h:214
ObjectSpec::height
uint8 height
The height of this structure, in heightlevels; max MAX_TILE_HEIGHT.
Definition: newgrf_object.h:73
TCX_NORMAL
@ TCX_NORMAL
Nothing special.
Definition: newgrf_commons.h:25
ROTSG_BRIDGE
@ ROTSG_BRIDGE
Required: Bridge surface images.
Definition: road.h:64
StartSpriteCombine
void StartSpriteCombine()
Starts a block of sprites, which are "combined" into a single bounding box.
Definition: viewport.cpp:756
INVALID_DIAGDIR
@ INVALID_DIAGDIR
Flag for an invalid DiagDirection.
Definition: direction_type.h:84
MP_TUNNELBRIDGE
@ MP_TUNNELBRIDGE
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:50
AutoslopeEnabled
static bool AutoslopeEnabled()
Tests if autoslope is enabled for _current_company.
Definition: autoslope.h:44
CompanyInfrastructure::road
uint32 road[ROADTYPE_END]
Count of company owned track bits for each road type.
Definition: company_base.h:31
FOUNDATION_NONE
@ FOUNDATION_NONE
The tile has no foundation, the slope remains unchanged.
Definition: slope_type.h:94
IsRoadDepot
static bool IsRoadDepot(TileIndex t)
Return whether a tile is a road depot.
Definition: road_map.h:105
RoadTypeInfo::name
StringID name
Name of this rail type.
Definition: road.h:100
SLOPE_SW
@ SLOPE_SW
south and west corner are raised
Definition: slope_type.h:56
ValParamRoadType
bool ValParamRoadType(RoadType roadtype)
Validate functions for rail building.
Definition: road.cpp:142
GetSouthernBridgeEnd
TileIndex GetSouthernBridgeEnd(TileIndex t)
Finds the southern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:49
Slope
Slope
Enumeration for the slope-type.
Definition: slope_type.h:48
DiagDirection
DiagDirection
Enumeration for diagonal directions.
Definition: direction_type.h:77
RTBO_SLOPE
@ RTBO_SLOPE
Sloped rail pieces, in order NE, SE, SW, NW.
Definition: rail.h:92
RailtypeInfo::base_sprites
struct RailtypeInfo::@38 base_sprites
Struct containing the main sprites.
GetSlopePixelZOnEdge
void GetSlopePixelZOnEdge(Slope tileh, DiagDirection edge, int *z1, int *z2)
Determine the Z height of the corners of a specific tile edge.
Definition: landscape.cpp:393
ROADSIDE_TREES
@ ROADSIDE_TREES
Road with trees on paved sidewalks.
Definition: road_map.h:483
date_func.h
CommandCost::AddCost
void AddCost(const Money &cost)
Adds the given cost to the cost of the command.
Definition: command_type.h:62
GUISettings::show_track_reservation
bool show_track_reservation
highlight reserved tracks.
Definition: settings_type.h:144
BridgeType
uint BridgeType
Bridge spec number.
Definition: bridge.h:36
stdafx.h
RoadType
RoadType
The different roadtypes we support.
Definition: road_type.h:22
TileTypeProcs
Set of callback functions for performing tile operations of a given tile type.
Definition: tile_cmd.h:145
ConstructionSettings::extra_dynamite
bool extra_dynamite
extra dynamite
Definition: settings_type.h:324
GetBridgeFoundation
Foundation GetBridgeFoundation(Slope tileh, Axis axis)
Get the foundation for a bridge.
Definition: tunnelbridge_cmd.cpp:126
CalcBridgeLenCostFactor
int CalcBridgeLenCostFactor(int length)
Calculate the price factor for building a long bridge.
Definition: tunnelbridge_cmd.cpp:105
HasTunnelBridgeSnowOrDesert
static bool HasTunnelBridgeSnowOrDesert(TileIndex t)
Tunnel: Is this tunnel entrance in a snowy or desert area? Bridge: Does the bridge ramp lie in a snow...
Definition: tunnelbridge_map.h:52
GetBridgeRoadCatenary
static void GetBridgeRoadCatenary(const RoadTypeInfo *rti, TileIndex head_tile, int offset, bool head, SpriteID &spr_back, SpriteID &spr_front)
Retrieve the sprites required for catenary on a road/tram bridge.
Definition: tunnelbridge_cmd.cpp:1149
SPR_RAILTYPE_TUNNEL_BASE
static const SpriteID SPR_RAILTYPE_TUNNEL_BASE
Tunnel sprites with grass only for custom railtype tunnel.
Definition: sprites.h:295
Cheat::value
bool value
tells if the bool cheat is active or not
Definition: cheat_type.h:18
DC_BANKRUPT
@ DC_BANKRUPT
company bankrupts, skip money check, skip vehicle on tile check in some cases
Definition: command_type.h:354
RTSG_OVERLAY
@ RTSG_OVERLAY
Images for overlaying track.
Definition: rail.h:48
viewport_func.h
DoClearBridge
static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
Remove a bridge from the game, update town rating, etc.
Definition: tunnelbridge_cmd.cpp:937
AxisToDiagDir
static DiagDirection AxisToDiagDir(Axis a)
Converts an Axis to a DiagDirection.
Definition: direction_func.h:232
GetTunnelBridgeDirection
static DiagDirection GetTunnelBridgeDirection(TileIndex t)
Get the direction pointing to the other end.
Definition: tunnelbridge_map.h:26
ChangeTownRating
void ChangeTownRating(Town *t, int add, int max, DoCommandFlag flags)
Changes town rating of the current company.
Definition: town_cmd.cpp:3674
GetTileOwner
static Owner GetTileOwner(TileIndex tile)
Returns the owner of a tile.
Definition: tile_map.h:178
AddSortableSpriteToDraw
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:660
GetBridgeAxis
static Axis GetBridgeAxis(TileIndex t)
Get the axis of the bridge that goes over the tile.
Definition: bridge_map.h:68
yapf_cache.h
Vehicle::direction
Direction direction
facing
Definition: vehicle_base.h:281
newgrf_object.h
BridgeSpec::min_length
byte min_length
the minimum length (not counting start and end tile)
Definition: bridge.h:43
ApplyPixelFoundationToSlope
static uint ApplyPixelFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.h:129
DrawFoundation
void DrawFoundation(TileInfo *ti, Foundation f)
Draw foundation f at tile ti.
Definition: landscape.cpp:470
ConstructionSettings::max_bridge_length
uint16 max_bridge_length
maximum length of bridges
Definition: settings_type.h:320
DistanceSquare
uint DistanceSquare(TileIndex t0, TileIndex t1)
Gets the 'Square' distance between the two given tiles.
Definition: map.cpp:174
RTSG_TUNNEL
@ RTSG_TUNNEL
Main group of ground images for snow or desert.
Definition: rail.h:50
TRACKDIR_BIT_NONE
@ TRACKDIR_BIT_NONE
No track build.
Definition: track_type.h:102
Ship
All ships have this type.
Definition: ship.h:26
GetCustomRailSprite
SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context, uint *num_results)
Get the sprite to draw for the given tile.
Definition: newgrf_railtype.cpp:102
CmdBuildTunnel
CommandCost CmdBuildTunnel(TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
Build Tunnel.
Definition: tunnelbridge_cmd.cpp:633
_current_company
CompanyID _current_company
Company currently doing an action.
Definition: company_cmd.cpp:47
vehicle_func.h
newgrf_sound.h
PALETTE_CRASH
static const PaletteID PALETTE_CRASH
Recolour sprite greying of crashed vehicles.
Definition: sprites.h:1594
strings_func.h
RTBO_X
@ RTBO_X
Piece of rail in X direction.
Definition: rail.h:90
Vehicle::First
Vehicle * First() const
Get the first vehicle of this vehicle chain.
Definition: vehicle_base.h:605
GetWaterClass
static WaterClass GetWaterClass(TileIndex t)
Get the water class at a tile.
Definition: water_map.h:106
newgrf_roadtype.h
FindClearedObject
ClearedObjectArea * FindClearedObject(TileIndex tile)
Find the entry in _cleared_object_areas which occupies a certain tile.
Definition: object_cmd.cpp:456
BridgeSpec::max_length
uint16 max_length
the maximum length (not counting start and end tile)
Definition: bridge.h:44
ClearTile_TunnelBridge
static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
Remove a tunnel or a bridge from the game.
Definition: tunnelbridge_cmd.cpp:1035
IsPlainRail
static bool IsPlainRail(TileIndex t)
Returns whether this is plain rails, with or without signals.
Definition: rail_map.h:49
ClearBridgeMiddle
static void ClearBridgeMiddle(TileIndex t)
Removes bridges from the given, that is bridges along the X and Y axis.
Definition: bridge_map.h:103
TryPathReserve
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:2681
SpecializedVehicle< Train, Type >::From
static Train * From(Vehicle *v)
Converts a Vehicle to SpecializedVehicle with type checking.
Definition: vehicle_base.h:1162
IsTunnel
static bool IsTunnel(TileIndex t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:23
HasTunnelBridgeReservation
static bool HasTunnelBridgeReservation(TileIndex t)
Get the reservation state of the rail tunnel/bridge.
Definition: tunnelbridge_map.h:91
TCX_ON_BRIDGE
@ TCX_ON_BRIDGE
Querying information about stuff on the bridge (via some bridgehead).
Definition: newgrf_commons.h:27
HasRailCatenaryDrawn
static bool HasRailCatenaryDrawn(RailType rt)
Test if we should draw rail catenary.
Definition: elrail_func.h:30
ConstructionSettings::build_on_slopes
bool build_on_slopes
allow building on slopes
Definition: settings_type.h:318
ROTSG_OVERLAY
@ ROTSG_OVERLAY
Optional: Images for overlaying track.
Definition: road.h:59
RTO_X
@ RTO_X
Piece of rail in X direction.
Definition: rail.h:68
RoadClearCost
static Money RoadClearCost(RoadType roadtype)
Returns the cost of clearing the specified roadtype.
Definition: road.h:260
cheat_type.h
SetTunnelBridgeReservation
static void SetTunnelBridgeReservation(TileIndex t, bool b)
Set the reservation state of the rail tunnel/bridge.
Definition: tunnelbridge_map.h:104
OBJECT_FLAG_ALLOW_UNDER_BRIDGE
@ OBJECT_FLAG_ALLOW_UNDER_BRIDGE
Object can built under a bridge.
Definition: newgrf_object.h:37
MarkTileDirtyByTile
void MarkTileDirtyByTile(TileIndex tile, int bridge_level_offset, int tile_height_override)
Mark a tile given by its index dirty for repaint.
Definition: viewport.cpp:1985
TRANSPORT_WATER
@ TRANSPORT_WATER
Transport over water.
Definition: transport_type.h:29
ObjectSpec::GetByTile
static const ObjectSpec * GetByTile(TileIndex tile)
Get the specification associated with a tile.
Definition: newgrf_object.cpp:50
AddSideToSignalBuffer
void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner)
Add side of tile to signal update buffer.
Definition: signal.cpp:612
OWNER_NONE
@ OWNER_NONE
The tile has no ownership.
Definition: company_type.h:25
CompanyInfrastructure::rail
uint32 rail[RAILTYPE_END]
Count of company owned track bits for each rail type.
Definition: company_base.h:33
TileDiffXY
static TileIndexDiff TileDiffXY(int x, int y)
Calculates an offset for the given coordinate(-offset).
Definition: map_func.h:179
Ship::state
TrackBits state
The "track" the ship is following.
Definition: ship.h:27
GetRailType
static RailType GetRailType(TileIndex t)
Gets the rail type of the given tile.
Definition: rail_map.h:115
ROTSG_CATENARY_FRONT
@ ROTSG_CATENARY_FRONT
Optional: Catenary front.
Definition: road.h:62
Town::cache
TownCache cache
Container for all cacheable data.
Definition: town.h:53
UpdateCompanyRoadInfrastructure
void UpdateCompanyRoadInfrastructure(RoadType rt, Owner o, int count)
Update road infrastructure counts for a company.
Definition: road_cmd.cpp:194
GetRoadTypeInfo
static const RoadTypeInfo * GetRoadTypeInfo(RoadType roadtype)
Returns a pointer to the Roadtype information for a given roadtype.
Definition: road.h:224
GroundVehicle::gv_flags
uint16 gv_flags
Definition: ground_vehicle.hpp:81
OWNER_DEITY
@ OWNER_DEITY
The object is owned by a superuser / goal script.
Definition: company_type.h:27
TileDesc::str
StringID str
Description of the tile.
Definition: tile_cmd.h:52
DC_AUTO
@ DC_AUTO
don't allow building on structures
Definition: command_type.h:349
PalSpriteID
Combination of a palette sprite and a 'real' sprite.
Definition: gfx_type.h:22
RailtypeInfo::strings
struct RailtypeInfo::@41 strings
Strings associated with the rail type.
MapMaxX
static uint MapMaxX()
Gets the maximum X coordinate within the map, including MP_VOID.
Definition: map_func.h:102
GetOtherTunnelEnd
TileIndex GetOtherTunnelEnd(TileIndex tile)
Gets the other end of the tunnel.
Definition: tunnel_map.cpp:22
abs
static T abs(const T a)
Returns the absolute value of (scalar) variable.
Definition: math_func.hpp:21
TileArea
OrthogonalTileArea TileArea
Shorthand for the much more common orthogonal tile area.
Definition: tilearea_type.h:96
DrawRailCatenaryOnTunnel
void DrawRailCatenaryOnTunnel(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:247
MarkBridgeDirty
void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
Mark bridge tiles dirty.
Definition: tunnelbridge_cmd.cpp:64
IsDockingTile
static bool IsDockingTile(TileIndex t)
Checks whether the tile is marked as a dockling tile.
Definition: water_map.h:365
CalcBridgePiece
static BridgePieces CalcBridgePiece(uint north, uint south)
Compute bridge piece.
Definition: tunnelbridge_cmd.cpp:1521
CheckTileOwnership
CommandCost CheckTileOwnership(TileIndex tile)
Check whether the current owner owns the stuff on the given tile.
Definition: company_cmd.cpp:329
GetTunnelBridgeLength
static uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
Calculates the length of a tunnel or a bridge (without end tiles)
Definition: tunnelbridge.h:25
lengthof
#define lengthof(x)
Return the length of an fixed size array.
Definition: stdafx.h:367
Town
Town data structure.
Definition: town.h:50
RVSB_WORMHOLE
@ RVSB_WORMHOLE
The vehicle is in a tunnel and/or bridge.
Definition: roadveh.h:40
TileDesc::rail_speed
uint16 rail_speed
Speed limit of rail (bridges and track)
Definition: tile_cmd.h:64
DiagDirToDiagTrackBits
static TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track bits incidating with that diagdir.
Definition: track_func.h:532
RoadTypeInfo::max_speed
uint16 max_speed
Maximum speed for vehicles travelling on this road type.
Definition: road.h:139
GetBridgePixelHeight
static int GetBridgePixelHeight(TileIndex tile)
Get the height ('z') of a bridge in pixels.
Definition: bridge_map.h:84
TILE_HEIGHT
static const uint TILE_HEIGHT
Height of a height level in world coordinate AND in pixels in #ZOOM_LVL_BASE.
Definition: tile_type.h:16
OverflowSafeInt< int64, INT64_MAX, INT64_MIN >
DrawTile_TunnelBridge
static void DrawTile_TunnelBridge(TileInfo *ti)
Draws a tunnel of bridge tile.
Definition: tunnelbridge_cmd.cpp:1275
DrawRailCatenary
void DrawRailCatenary(const TileInfo *ti)
Draws overhead wires and pylons for electric railways.
Definition: elrail.cpp:566
RoadBuildCost
static Money RoadBuildCost(RoadType roadtype)
Returns the cost of building the specified roadtype.
Definition: road.h:249
INVALID_TILE
static const TileIndex INVALID_TILE
The very nice invalid tile marker.
Definition: tile_type.h:83
IsNormalRoadTile
static bool IsNormalRoadTile(TileIndex t)
Return whether a tile is a normal road tile.
Definition: road_map.h:73
Axis
Axis
Allow incrementing of DiagDirDiff variables.
Definition: direction_type.h:123
CheckBridgeAvailability
CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
Is a bridge of the specified type and length available?
Definition: tunnelbridge_cmd.cpp:197
SetRoadside
static void SetRoadside(TileIndex tile, Roadside s)
Set the decorations of a road.
Definition: road_map.h:503
GetRoadOwner
static Owner GetRoadOwner(TileIndex t, RoadTramType rtt)
Get the owner of a specific road type.
Definition: road_map.h:233
TileDesc::owner_type
StringID owner_type[4]
Type of each owner.
Definition: tile_cmd.h:54
GetOtherTunnelBridgeEnd
static TileIndex GetOtherTunnelBridgeEnd(TileIndex t)
Determines type of the wormhole and returns its other end.
Definition: tunnelbridge_map.h:78
SetTileOwner
static void SetTileOwner(TileIndex tile, Owner owner)
Sets the owner of a tile.
Definition: tile_map.h:198
PalSpriteID::pal
PaletteID pal
The palette (use PAL_NONE) if not needed)
Definition: gfx_type.h:24
TileInfo::tile
TileIndex tile
Tile index.
Definition: tile_cmd.h:46
GameSettings::construction
ConstructionSettings construction
construction of things in-game
Definition: settings_type.h:561
GetTileType
static TileType GetTileType(TileIndex tile)
Get the tiletype of a given tile.
Definition: tile_map.h:96
VEH_TRAIN
@ VEH_TRAIN
Train vehicle type.
Definition: vehicle_type.h:24
MakeRoadBridgeRamp
static void MakeRoadBridgeRamp(TileIndex t, Owner o, Owner owner_road, Owner owner_tram, BridgeType bridgetype, DiagDirection d, RoadType road_rt, RoadType tram_rt)
Make a bridge ramp for roads.
Definition: bridge_map.h:153
Pool::PoolItem<&_company_pool >::IsValidID
static bool IsValidID(size_t index)
Tests whether given index can be used to get valid (non-nullptr) Titem.
Definition: pool_type.hpp:318
BaseVehicle::type
VehicleType type
Type of vehicle.
Definition: vehicle_type.h:52
WATER_CLASS_SEA
@ WATER_CLASS_SEA
Sea.
Definition: water_map.h:48
TileDesc::tramtype
StringID tramtype
Type of tram on the tile.
Definition: tile_cmd.h:67
IsWater
static bool IsWater(TileIndex t)
Is it a plain water tile?
Definition: water_map.h:141
DC_QUERY_COST
@ DC_QUERY_COST
query cost only, don't build.
Definition: command_type.h:350
Swap
static void Swap(T &a, T &b)
Type safe swap operation.
Definition: math_func.hpp:215
TUNNELBRIDGE_REMOVE
@ TUNNELBRIDGE_REMOVE
Removal of a tunnel or bridge owned by the towb.
Definition: town.h:162
GetTilePixelSlope
static Slope GetTilePixelSlope(TileIndex tile, int *h)
Return the slope of a given tile.
Definition: tile_map.h:280
InclinedFoundation
static Foundation InclinedFoundation(Axis axis)
Returns the along a specific axis inclined foundation.
Definition: slope_func.h:380
Track
Track
These are used to specify a single track.
Definition: track_type.h:19
ApplyFoundationToSlope
uint ApplyFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.cpp:162
free
static void free(const void *ptr)
Version of the standard free that accepts const pointers.
Definition: stdafx.h:454
GetTunnelBridgeTransportType
static TransportType GetTunnelBridgeTransportType(TileIndex t)
Tunnel: Get the transport type of the tunnel (road or rail) Bridge: Get the transport type of the bri...
Definition: tunnelbridge_map.h:39
DIAGDIR_NE
@ DIAGDIR_NE
Northeast, upper right on your monitor.
Definition: direction_type.h:79
ClearedObjectArea
Keeps track of removed objects during execution/testruns of commands.
Definition: object_base.h:84
VEH_SHIP
@ VEH_SHIP
Ship vehicle type.
Definition: vehicle_type.h:26
TunnelBridgeClearCost
static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
Calculate the base cost of clearing a tunnel/bridge per tile.
Definition: tunnelbridge_cmd.cpp:221
Company
Definition: company_base.h:110
ConstructionSettings::max_tunnel_length
uint16 max_tunnel_length
maximum length of tunnels
Definition: settings_type.h:322
BridgePieces
BridgePieces
This enum is related to the definition of bridge pieces, which is used to determine the proper sprite...
Definition: bridge.h:21
SLOPE_SE
@ SLOPE_SE
south and east corner are raised
Definition: slope_type.h:57
MakeRailBridgeRamp
static void MakeRailBridgeRamp(TileIndex t, Owner o, BridgeType bridgetype, DiagDirection d, RailType rt)
Make a bridge ramp for rails.
Definition: bridge_map.h:169
OWNER_WATER
@ OWNER_WATER
The tile/execution is done by "water".
Definition: company_type.h:26
ROTSG_CATENARY_BACK
@ ROTSG_CATENARY_BACK
Optional: Catenary back.
Definition: road.h:63
SetTunnelBridgeSnowOrDesert
static void SetTunnelBridgeSnowOrDesert(TileIndex t, bool snow_or_desert)
Tunnel: Places this tunnel entrance in a snowy or desert area, or takes it out of there.
Definition: tunnelbridge_map.h:66
DrawBridgePillars
static void DrawBridgePillars(const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
Draws the pillars under high bridges.
Definition: tunnelbridge_cmd.cpp:1093
bridge_land.h
SLOPE_NE
@ SLOPE_NE
north and east corner are raised
Definition: slope_type.h:58
ComplementSlope
static Slope ComplementSlope(Slope s)
Return the complement of a slope.
Definition: slope_func.h:76
RATING_TUNNEL_BRIDGE_DOWN_STEP
@ RATING_TUNNEL_BRIDGE_DOWN_STEP
penalty for removing town owned tunnel or bridge
Definition: town_type.h:57
VehicleEnterTileStatus
VehicleEnterTileStatus
The returned bits of VehicleEnterTile.
Definition: tile_cmd.h:20
CMD_LANDSCAPE_CLEAR
@ CMD_LANDSCAPE_CLEAR
demolish a tile
Definition: command_type.h:180
OWNER_TOWN
@ OWNER_TOWN
A town owns the tile, or a town is expanding.
Definition: company_type.h:24
newgrf_railtype.h
TunnelBridgeIsFree
CommandCost TunnelBridgeIsFree(TileIndex tile, TileIndex endtile, const Vehicle *ignore)
Finds vehicle in tunnel / bridge.
Definition: vehicle.cpp:568
DrawGroundSprite
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:576
_build_tunnel_endtile
TileIndex _build_tunnel_endtile
The end of a tunnel; as hidden return from the tunnel build command for GUI purposes.
Definition: tunnelbridge_cmd.cpp:50
ClientSettings::gui
GUISettings gui
settings related to the GUI
Definition: settings_type.h:577
GetTrainForReservation
Train * GetTrainForReservation(TileIndex tile, Track track)
Find the train which has reserved a specific path.
Definition: pbs.cpp:331
GetInclinedSlopeDirection
static DiagDirection GetInclinedSlopeDirection(Slope s)
Returns the direction of an inclined slope.
Definition: slope_func.h:239
RailtypeInfo::bridge_offset
SpriteID bridge_offset
Bridge offset.
Definition: rail.h:193
SPR_TRAMWAY_BASE
static const SpriteID SPR_TRAMWAY_BASE
Tramway sprites.
Definition: sprites.h:266
DrawBridgeRoadBits
static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head)
Draws the road and trambits over an already drawn (lower end) of a bridge.
Definition: tunnelbridge_cmd.cpp:1175
VETSB_ENTERED_WORMHOLE
@ VETSB_ENTERED_WORMHOLE
The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/...
Definition: tile_cmd.h:36
IsBridgeAbove
static bool IsBridgeAbove(TileIndex t)
checks if a bridge is set above the ground of this tile
Definition: bridge_map.h:45
roadveh.h
INVALID_RAILTYPE
@ INVALID_RAILTYPE
Flag for invalid railtype.
Definition: rail_type.h:34
ObjectSpec::flags
ObjectFlags flags
Flags/settings related to the object.
Definition: newgrf_object.h:70
TileDesc::road_speed
uint16 road_speed
Speed limit of road (bridges and track)
Definition: tile_cmd.h:66
RTSG_TUNNEL_PORTAL
@ RTSG_TUNNEL_PORTAL
Tunnel portal overlay.
Definition: rail.h:57
AXIS_X
@ AXIS_X
The X axis.
Definition: direction_type.h:124