OpenTTD Source: src/tunnelbridge_cmd.cpp Source File

OpenTTD Source 15.3

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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
6 */
7
14#include "stdafx.h"
15#include "viewport_func.h"
16#include "command_func.h"
17#include "town.h"
18#include "train.h"
19#include "ship.h"
20#include "roadveh.h"
21#include "pathfinder/yapf/yapf_cache.h"
22#include "newgrf_sound.h"
23#include "autoslope.h"
24#include "tunnelbridge_map.h"
25#include "strings_func.h"
26#include "timer/timer_game_calendar.h"
27#include "clear_func.h"
28#include "vehicle_func.h"
29#include "sound_func.h"
30#include "tunnelbridge.h"
31#include "cheat_type.h"
32#include "elrail_func.h"
33#include "pbs.h"
34#include "company_base.h"
35#include "newgrf_railtype.h"
36#include "newgrf_roadtype.h"
37#include "object_base.h"
38#include "water.h"
39#include "company_gui.h"
40#include "tunnelbridge_cmd.h"
41#include "landscape_cmd.h"
42#include "terraform_cmd.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 std::ranges::copy(_orig_bridge, std::begin(_bridge));
86}
87
94 int CalcBridgeLenCostFactor(int length)
95{
96 if (length < 2) return length;
97
98 length -= 2;
99 int sum = 2;
100 for (int delta = 1;; delta++) {
101 for (int count = 0; count < delta; count++) {
102 if (length == 0) return sum;
103 sum += delta;
104 length--;
105 }
106 }
107}
108
115 Foundation GetBridgeFoundation(Slope tileh, Axis axis)
116{
117 if (tileh == SLOPE_FLAT ||
118 ((tileh == SLOPE_NE || tileh == SLOPE_SW) && axis == AXIS_X) ||
119 ((tileh == SLOPE_NW || tileh == SLOPE_SE) && axis == AXIS_Y)) return FOUNDATION_NONE;
120
121 return (HasSlopeHighestCorner(tileh) ? InclinedFoundation(axis) : FlatteningFoundation(tileh));
122}
123
131 bool HasBridgeFlatRamp(Slope tileh, Axis axis)
132{
133 ApplyFoundationToSlope(GetBridgeFoundation(tileh, axis), tileh);
134 /* If the foundation slope is flat the bridge has a non-flat ramp and vice versa. */
135 return (tileh != SLOPE_FLAT);
136}
137
144 static bool BridgeHasCustomSpriteTable(BridgeType bridge_type, BridgePieces piece)
145{
146 assert(piece < NUM_BRIDGE_PIECES);
147 const BridgeSpec *bridge = GetBridgeSpec(bridge_type);
148 return piece < bridge->sprite_table.size() && !bridge->sprite_table[piece].empty();
149}
150
157 static std::span<const PalSpriteID> GetBridgeSpriteTable(BridgeType bridge_type, BridgePieces piece)
158{
159 assert(piece < NUM_BRIDGE_PIECES);
160
161 const BridgeSpec *bridge = GetBridgeSpec(bridge_type);
162 if (piece < bridge->sprite_table.size() && !bridge->sprite_table[piece].empty()) return bridge->sprite_table[piece];
163
164 return _bridge_sprite_table[bridge_type][piece];
165}
166
173 static uint8_t GetBridgeSpriteTableBaseOffset(TransportType transport_type, TileIndex ramp)
174{
175 switch (transport_type) {
176 case TRANSPORT_RAIL: return GetRailTypeInfo(GetRailType(ramp))->bridge_offset;
177 case TRANSPORT_ROAD: return 8;
178 default: NOT_REACHED();
179 }
180}
181
187 static uint8_t GetBridgeRampDirectionBaseOffset(DiagDirection diagdir)
188{
189 /* Bridge ramps are ordered SW, SE, NE, NW instead of NE, SE, SW, NW. */
190 static constexpr uint8_t ramp_offsets[DIAGDIR_END] = {2, 1, 0, 3};
191 return ramp_offsets[diagdir];
192}
193
199 static uint8_t GetBridgeMiddleAxisBaseOffset(Axis axis)
200{
201 return axis == AXIS_X ? 0 : 4;
202}
203
213 static CommandCost CheckBridgeSlope(BridgePieces bridge_piece, Axis axis, Slope &tileh, int &z)
214{
215 assert(bridge_piece == BRIDGE_PIECE_NORTH || bridge_piece == BRIDGE_PIECE_SOUTH);
216
217 Foundation f = GetBridgeFoundation(tileh, axis);
218 z += ApplyFoundationToSlope(f, tileh);
219
220 Slope valid_inclined;
221 if (bridge_piece == BRIDGE_PIECE_NORTH) {
222 valid_inclined = (axis == AXIS_X ? SLOPE_NE : SLOPE_NW);
223 } else {
224 valid_inclined = (axis == AXIS_X ? SLOPE_SW : SLOPE_SE);
225 }
226 if ((tileh != SLOPE_FLAT) && (tileh != valid_inclined)) return CMD_ERROR;
227
228 if (f == FOUNDATION_NONE) return CommandCost();
229
230 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
231}
232
240 CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlags flags)
241{
242 if (flags.Test(DoCommandFlag::QueryCost)) {
243 if (bridge_len <= _settings_game.construction.max_bridge_length) return CommandCost();
244 return CommandCost(STR_ERROR_BRIDGE_TOO_LONG);
245 }
246
247 if (bridge_type >= MAX_BRIDGES) return CMD_ERROR;
248
249 const BridgeSpec *b = GetBridgeSpec(bridge_type);
250 if (b->avail_year > TimerGameCalendar::year) return CMD_ERROR;
251
252 uint max = std::min(b->max_length, _settings_game.construction.max_bridge_length);
253
254 if (b->min_length > bridge_len) return CMD_ERROR;
255 if (bridge_len <= max) return CommandCost();
256 return CommandCost(STR_ERROR_BRIDGE_TOO_LONG);
257}
258
264 static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
265{
266 Money base_cost = _price[base_price];
267
268 /* Add the cost of the transport that is on the tunnel/bridge. */
269 switch (GetTunnelBridgeTransportType(tile)) {
270 case TRANSPORT_ROAD: {
271 RoadType road_rt = GetRoadTypeRoad(tile);
272 RoadType tram_rt = GetRoadTypeTram(tile);
273
274 if (road_rt != INVALID_ROADTYPE) {
275 base_cost += 2 * RoadClearCost(road_rt);
276 }
277 if (tram_rt != INVALID_ROADTYPE) {
278 base_cost += 2 * RoadClearCost(tram_rt);
279 }
280 } break;
281
282 case TRANSPORT_RAIL: base_cost += RailClearCost(GetRailType(tile)); break;
283 /* Aqueducts have their own clear price. */
284 case TRANSPORT_WATER: base_cost = _price[PR_CLEAR_AQUEDUCT]; break;
285 default: break;
286 }
287
288 return base_cost;
289}
290
291static CommandCost CheckBuildAbove(TileIndex tile, DoCommandFlags flags, Axis axis, int height)
292{
293 if (_tile_type_procs[GetTileType(tile)]->check_build_above_proc != nullptr) {
294 return _tile_type_procs[GetTileType(tile)]->check_build_above_proc(tile, flags, axis, height);
295 }
296 /* A tile without a handler must be cleared. */
297 return Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
298}
299
310 CommandCost CmdBuildBridge(DoCommandFlags flags, TileIndex tile_end, TileIndex tile_start, TransportType transport_type, BridgeType bridge_type, uint8_t road_rail_type)
311{
312 CompanyID company = _current_company;
313
314 RailType railtype = INVALID_RAILTYPE;
315 RoadType roadtype = INVALID_ROADTYPE;
316
317 for (TileIndex t : {tile_start, tile_end}) {
318 if (!IsValidTile(t)) return CommandCost(STR_ERROR_BRIDGE_THROUGH_MAP_BORDER);
319 /* User cannot modify height of tiles with one coordinate equal to zero, they are always at the sea level, and you can't build bridge in the sea.
320 * Furthermore, they are void tiles unless map is infinite water. If we don't return for them here, we will still fail as their slope is invalid. */
321 if (TileX(t) == 0 || TileY(t) == 0) return CommandCost(transport_type == TRANSPORT_WATER ? STR_ERROR_BRIDGE_THROUGH_MAP_BORDER : STR_ERROR_TOO_CLOSE_TO_EDGE_OF_MAP);
322 }
323
324 /* type of bridge */
325 switch (transport_type) {
326 case TRANSPORT_ROAD:
327 roadtype = (RoadType)road_rail_type;
328 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
329 break;
330
331 case TRANSPORT_RAIL:
332 railtype = (RailType)road_rail_type;
333 if (!ValParamRailType(railtype)) return CMD_ERROR;
334 break;
335
336 case TRANSPORT_WATER:
337 break;
338
339 default:
340 /* Airports don't have bridges. */
341 return CMD_ERROR;
342 }
343
344 if (company == OWNER_DEITY) {
345 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
346 const Town *town = CalcClosestTownFromTile(tile_start);
347
348 company = OWNER_TOWN;
349
350 /* If we are not within a town, we are not owned by the town */
351 if (town == nullptr || DistanceSquare(tile_start, town->xy) > town->cache.squared_town_zone_radius[to_underlying(HouseZone::TownEdge)]) {
352 company = OWNER_NONE;
353 }
354 }
355
356 if (tile_start == tile_end) {
357 return CommandCost(STR_ERROR_CAN_T_START_AND_END_ON);
358 }
359
360 Axis direction;
361 if (TileX(tile_start) == TileX(tile_end)) {
362 direction = AXIS_Y;
363 } else if (TileY(tile_start) == TileY(tile_end)) {
364 direction = AXIS_X;
365 } else {
366 return CommandCost(STR_ERROR_START_AND_END_MUST_BE_IN);
367 }
368
369 if (tile_end < tile_start) std::swap(tile_start, tile_end);
370
371 uint bridge_len = GetTunnelBridgeLength(tile_start, tile_end);
372 if (transport_type != TRANSPORT_WATER) {
373 /* set and test bridge length, availability */
374 CommandCost ret = CheckBridgeAvailability(bridge_type, bridge_len, flags);
375 if (ret.Failed()) return ret;
376 } else {
377 if (bridge_len > _settings_game.construction.max_bridge_length) return CommandCost(STR_ERROR_BRIDGE_TOO_LONG);
378 }
379 bridge_len += 2; // begin and end tiles/ramps
380
381 auto [tileh_start, z_start] = GetTileSlopeZ(tile_start);
382 auto [tileh_end, z_end] = GetTileSlopeZ(tile_end);
383 bool pbs_reservation = false;
384
385 CommandCost terraform_cost_north = CheckBridgeSlope(BRIDGE_PIECE_NORTH, direction, tileh_start, z_start);
386 CommandCost terraform_cost_south = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, direction, tileh_end, z_end);
387
388 /* Aqueducts can't be built of flat land. */
389 if (transport_type == TRANSPORT_WATER && (tileh_start == SLOPE_FLAT || tileh_end == SLOPE_FLAT)) return CommandCost(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
390 if (z_start != z_end) return CommandCost(STR_ERROR_BRIDGEHEADS_NOT_SAME_HEIGHT);
391
392 CommandCost cost(EXPENSES_CONSTRUCTION);
393 Owner owner;
394 bool is_new_owner;
395 RoadType road_rt = INVALID_ROADTYPE;
396 RoadType tram_rt = INVALID_ROADTYPE;
397 if (IsBridgeTile(tile_start) && IsBridgeTile(tile_end) &&
398 GetOtherBridgeEnd(tile_start) == tile_end &&
399 GetTunnelBridgeTransportType(tile_start) == transport_type) {
400 /* Replace a current bridge. */
401
402 switch (transport_type) {
403 case TRANSPORT_RAIL:
404 /* Keep the reservation, the path stays valid. */
405 pbs_reservation = HasTunnelBridgeReservation(tile_start);
406 break;
407
408 case TRANSPORT_ROAD:
409 /* Do not remove road types when upgrading a bridge */
410 road_rt = GetRoadTypeRoad(tile_start);
411 tram_rt = GetRoadTypeTram(tile_start);
412 break;
413
414 default: break;
415 }
416
417 /* If this is a railway bridge, make sure the railtypes match. */
418 if (transport_type == TRANSPORT_RAIL && GetRailType(tile_start) != railtype) {
419 return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
420 }
421
422 /* If this is a road bridge, make sure the roadtype matches. */
423 if (transport_type == TRANSPORT_ROAD) {
424 RoadType existing_rt = RoadTypeIsRoad(roadtype) ? road_rt : tram_rt;
425 if (existing_rt != roadtype && existing_rt != INVALID_ROADTYPE) {
426 return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
427 }
428 }
429
430 if (!flags.Test(DoCommandFlag::QueryCost)) {
431 /* Do not replace the bridge with the same bridge type. */
432 if ((bridge_type == GetBridgeType(tile_start)) && (transport_type != TRANSPORT_ROAD || road_rt == roadtype || tram_rt == roadtype)) {
433 return CommandCost(STR_ERROR_ALREADY_BUILT);
434 }
435
436 /* Do not replace town bridges with lower speed bridges, unless in scenario editor. */
437 if (IsTileOwner(tile_start, OWNER_TOWN) && _game_mode != GM_EDITOR) {
438 Town *t = ClosestTownFromTile(tile_start, UINT_MAX);
439 if (t == nullptr) return CMD_ERROR;
440
441 if (GetBridgeSpec(bridge_type)->speed < GetBridgeSpec(GetBridgeType(tile_start))->speed) {
442 return CommandCostWithParam(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS, t->index);
443 } else {
444 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_UP_STEP, RATING_MAXIMUM, flags);
445 }
446 }
447 }
448
449 /* Do not allow replacing another company's bridges. */
450 if (!IsTileOwner(tile_start, company) && !IsTileOwner(tile_start, OWNER_TOWN) && !IsTileOwner(tile_start, OWNER_NONE)) {
451 return CommandCost(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
452 }
453
454 /* The cost of clearing the current bridge. */
455 cost.AddCost(bridge_len * TunnelBridgeClearCost(tile_start, PR_CLEAR_BRIDGE));
456 owner = GetTileOwner(tile_start);
457
458 /* If bridge belonged to bankrupt company, it has a new owner now */
459 is_new_owner = (owner == OWNER_NONE);
460 if (is_new_owner) owner = company;
461
462 /* Check if the new bridge is compatible with tiles underneath. */
463 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
464 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
465 CommandCost ret = CheckBuildAbove(tile, flags, direction, z_start + 1);
466 if (ret.Failed()) return ret;
467 cost.AddCost(ret.GetCost());
468 }
469 } else {
470 /* Build a new bridge. */
471
472 bool allow_on_slopes = (_settings_game.construction.build_on_slopes && transport_type != TRANSPORT_WATER);
473
474 /* Try and clear the start landscape */
475 CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile_start);
476 if (ret.Failed()) return ret;
477 cost = ret;
478
479 if (terraform_cost_north.Failed() || (terraform_cost_north.GetCost() != 0 && !allow_on_slopes)) return CommandCost(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
480 cost.AddCost(terraform_cost_north.GetCost());
481
482 /* Try and clear the end landscape */
483 ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile_end);
484 if (ret.Failed()) return ret;
485 cost.AddCost(ret.GetCost());
486
487 /* false - end tile slope check */
488 if (terraform_cost_south.Failed() || (terraform_cost_south.GetCost() != 0 && !allow_on_slopes)) return CommandCost(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
489 cost.AddCost(terraform_cost_south.GetCost());
490
491 /* Check for bridges above the bridge ramps. */
492 for (TileIndex tile : {tile_start, tile_end}) {
493 if (!IsBridgeAbove(tile)) continue;
494
495 if (direction == GetBridgeAxis(tile)) return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
496
497 if (z_start + 1 == GetBridgeHeight(GetNorthernBridgeEnd(tile))) return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
498 }
499
500 TileIndexDiff delta = TileOffsByAxis(direction);
501 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
502 if (GetTileMaxZ(tile) > z_start) return CommandCost(STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN);
503
504 if (z_start >= (GetTileZ(tile) + _settings_game.construction.max_bridge_height)) {
505 /*
506 * Disallow too high bridges.
507 * Properly rendering a map where very high bridges (might) exist is expensive.
508 * See http://www.tt-forums.net/viewtopic.php?f=33&t=40844&start=980#p1131762
509 * for a detailed discussion. z_start here is one heightlevel below the bridge level.
510 */
511 return CommandCost(STR_ERROR_BRIDGE_TOO_HIGH_FOR_TERRAIN);
512 }
513
514 if (IsBridgeAbove(tile)) {
515 /* Disallow crossing bridges for the time being */
516 return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
517 }
518
519 ret = CheckBuildAbove(tile, flags, direction, z_start + 1);
520 if (ret.Failed()) return ret;
521 cost.AddCost(ret.GetCost());
522
523 if (flags.Test(DoCommandFlag::Execute)) {
524 /* We do this here because when replacing a bridge with another
525 * type calling SetBridgeMiddle isn't needed. After all, the
526 * tile already has the has_bridge_above bits set. */
527 SetBridgeMiddle(tile, direction);
528 }
529 }
530
531 owner = company;
532 is_new_owner = true;
533 }
534
535 bool hasroad = road_rt != INVALID_ROADTYPE;
536 bool hastram = tram_rt != INVALID_ROADTYPE;
537 if (transport_type == TRANSPORT_ROAD) {
538 if (RoadTypeIsRoad(roadtype)) road_rt = roadtype;
539 if (RoadTypeIsTram(roadtype)) tram_rt = roadtype;
540 }
541
542 /* do the drill? */
543 if (flags.Test(DoCommandFlag::Execute)) {
544 DiagDirection dir = AxisToDiagDir(direction);
545
546 Company *c = Company::GetIfValid(company);
547 switch (transport_type) {
548 case TRANSPORT_RAIL:
549 /* Add to company infrastructure count if required. */
550 if (is_new_owner && c != nullptr) c->infrastructure.rail[railtype] += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
551 MakeRailBridgeRamp(tile_start, owner, bridge_type, dir, railtype);
552 MakeRailBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), railtype);
553 SetTunnelBridgeReservation(tile_start, pbs_reservation);
554 SetTunnelBridgeReservation(tile_end, pbs_reservation);
555 break;
556
557 case TRANSPORT_ROAD: {
558 if (is_new_owner) {
559 /* Also give unowned present roadtypes to new owner */
560 if (hasroad && GetRoadOwner(tile_start, RTT_ROAD) == OWNER_NONE) hasroad = false;
561 if (hastram && GetRoadOwner(tile_start, RTT_TRAM) == OWNER_NONE) hastram = false;
562 }
563 if (c != nullptr) {
564 /* Add all new road types to the company infrastructure counter. */
565 if (!hasroad && road_rt != INVALID_ROADTYPE) {
566 /* A full diagonal road tile has two road bits. */
567 c->infrastructure.road[road_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
568 }
569 if (!hastram && tram_rt != INVALID_ROADTYPE) {
570 /* A full diagonal road tile has two road bits. */
571 c->infrastructure.road[tram_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
572 }
573 }
574 Owner owner_road = hasroad ? GetRoadOwner(tile_start, RTT_ROAD) : company;
575 Owner owner_tram = hastram ? GetRoadOwner(tile_start, RTT_TRAM) : company;
576 MakeRoadBridgeRamp(tile_start, owner, owner_road, owner_tram, bridge_type, dir, road_rt, tram_rt);
577 MakeRoadBridgeRamp(tile_end, owner, owner_road, owner_tram, bridge_type, ReverseDiagDir(dir), road_rt, tram_rt);
578 break;
579 }
580
581 case TRANSPORT_WATER:
582 if (is_new_owner && c != nullptr) c->infrastructure.water += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
583 MakeAqueductBridgeRamp(tile_start, owner, dir);
584 MakeAqueductBridgeRamp(tile_end, owner, ReverseDiagDir(dir));
585 CheckForDockingTile(tile_start);
586 CheckForDockingTile(tile_end);
587 break;
588
589 default:
590 NOT_REACHED();
591 }
592
593 /* Mark all tiles dirty */
594 MarkBridgeDirty(tile_start, tile_end, AxisToDiagDir(direction), z_start);
595 DirtyCompanyInfrastructureWindows(company);
596 }
597
598 if (flags.Test(DoCommandFlag::Execute) && transport_type == TRANSPORT_RAIL) {
599 Track track = AxisToTrack(direction);
600 AddSideToSignalBuffer(tile_start, INVALID_DIAGDIR, company);
601 YapfNotifyTrackLayoutChange(tile_start, track);
602 }
603
604 /* Human players that build bridges get a selection to choose from (DoCommandFlag::QueryCost)
605 * It's unnecessary to execute this command every time for every bridge.
606 * So it is done only for humans and cost is computed in bridge_gui.cpp.
607 * For (non-spectated) AI, Towns this has to be of course calculated. */
608 Company *c = Company::GetIfValid(company);
609 if (!flags.Test(DoCommandFlag::QueryCost) || (c != nullptr && c->is_ai && company != _local_company)) {
610 switch (transport_type) {
611 case TRANSPORT_ROAD:
612 if (road_rt != INVALID_ROADTYPE) {
613 cost.AddCost(bridge_len * 2 * RoadBuildCost(road_rt));
614 }
615 if (tram_rt != INVALID_ROADTYPE) {
616 cost.AddCost(bridge_len * 2 * RoadBuildCost(tram_rt));
617 }
618 break;
619
620 case TRANSPORT_RAIL: cost.AddCost(bridge_len * RailBuildCost(railtype)); break;
621 default: break;
622 }
623
624 if (c != nullptr) bridge_len = CalcBridgeLenCostFactor(bridge_len);
625
626 if (transport_type != TRANSPORT_WATER) {
627 cost.AddCost((int64_t)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
628 } else {
629 /* Aqueducts use a separate base cost. */
630 cost.AddCost((int64_t)bridge_len * _price[PR_BUILD_AQUEDUCT]);
631 }
632
633 }
634
635 return cost;
636}
637
638
647 CommandCost CmdBuildTunnel(DoCommandFlags flags, TileIndex start_tile, TransportType transport_type, uint8_t road_rail_type)
648{
649 CompanyID company = _current_company;
650
651 RailType railtype = INVALID_RAILTYPE;
652 RoadType roadtype = INVALID_ROADTYPE;
653 _build_tunnel_endtile = TileIndex{};
654 switch (transport_type) {
655 case TRANSPORT_RAIL:
656 railtype = (RailType)road_rail_type;
657 if (!ValParamRailType(railtype)) return CMD_ERROR;
658 break;
659
660 case TRANSPORT_ROAD:
661 roadtype = (RoadType)road_rail_type;
662 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
663 break;
664
665 default: return CMD_ERROR;
666 }
667
668 if (company == OWNER_DEITY) {
669 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
670 const Town *town = CalcClosestTownFromTile(start_tile);
671
672 company = OWNER_TOWN;
673
674 /* If we are not within a town, we are not owned by the town */
675 if (town == nullptr || DistanceSquare(start_tile, town->xy) > town->cache.squared_town_zone_radius[to_underlying(HouseZone::TownEdge)]) {
676 company = OWNER_NONE;
677 }
678 }
679
680 auto [start_tileh, start_z] = GetTileSlopeZ(start_tile);
681 DiagDirection direction = GetInclinedSlopeDirection(start_tileh);
682 if (direction == INVALID_DIAGDIR) return CommandCost(STR_ERROR_SITE_UNSUITABLE_FOR_TUNNEL);
683
684 if (HasTileWaterGround(start_tile)) return CommandCost(STR_ERROR_CAN_T_BUILD_ON_WATER);
685
686 CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, start_tile);
687 if (ret.Failed()) return ret;
688
689 /* XXX - do NOT change 'ret' in the loop, as it is used as the price
690 * for the clearing of the entrance of the tunnel. Assigning it to
691 * cost before the loop will yield different costs depending on start-
692 * position, because of increased-cost-by-length: 'cost += cost >> 3' */
693
694 TileIndexDiff delta = TileOffsByDiagDir(direction);
695 DiagDirection tunnel_in_way_dir;
696 if (DiagDirToAxis(direction) == AXIS_Y) {
697 tunnel_in_way_dir = (TileX(start_tile) < (Map::MaxX() / 2)) ? DIAGDIR_SW : DIAGDIR_NE;
698 } else {
699 tunnel_in_way_dir = (TileY(start_tile) < (Map::MaxX() / 2)) ? DIAGDIR_SE : DIAGDIR_NW;
700 }
701
702 TileIndex end_tile = start_tile;
703
704 /* Tile shift coefficient. Will decrease for very long tunnels to avoid exponential growth of price*/
705 int tiles_coef = 3;
706 /* Number of tiles from start of tunnel */
707 int tiles = 0;
708 /* Number of tiles at which the cost increase coefficient per tile is halved */
709 int tiles_bump = 25;
710
711 CommandCost cost(EXPENSES_CONSTRUCTION);
712 Slope end_tileh;
713 int end_z;
714 for (;;) {
715 end_tile += delta;
716 if (!IsValidTile(end_tile)) return CommandCost(STR_ERROR_TUNNEL_THROUGH_MAP_BORDER);
717 std::tie(end_tileh, end_z) = GetTileSlopeZ(end_tile);
718
719 if (start_z == end_z) break;
720
721 if (!_cheats.crossing_tunnels.value && IsTunnelInWayDir(end_tile, start_z, tunnel_in_way_dir)) {
722 return CommandCost(STR_ERROR_ANOTHER_TUNNEL_IN_THE_WAY);
723 }
724
725 tiles++;
726 if (tiles == tiles_bump) {
727 tiles_coef++;
728 tiles_bump *= 2;
729 }
730
731 cost.AddCost(_price[PR_BUILD_TUNNEL]);
732 cost.AddCost(cost.GetCost() >> tiles_coef); // add a multiplier for longer tunnels
733 }
734
735 /* Add the cost of the entrance */
736 cost.AddCost(_price[PR_BUILD_TUNNEL]);
737 cost.AddCost(ret.GetCost());
738
739 /* if the command fails from here on we want the end tile to be highlighted */
740 _build_tunnel_endtile = end_tile;
741
742 if (tiles > _settings_game.construction.max_tunnel_length) return CommandCost(STR_ERROR_TUNNEL_TOO_LONG);
743
744 if (HasTileWaterGround(end_tile)) return CommandCost(STR_ERROR_CAN_T_BUILD_ON_WATER);
745
746 /* Clear the tile in any case */
747 ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, end_tile);
748 if (ret.Failed()) return CommandCost(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
749 cost.AddCost(ret.GetCost());
750
751 /* slope of end tile must be complementary to the slope of the start tile */
752 if (end_tileh != ComplementSlope(start_tileh)) {
753 /* Mark the tile as already cleared for the terraform command.
754 * Do this for all tiles (like trees), not only objects. */
755 ClearedObjectArea *coa = FindClearedObject(end_tile);
756 if (coa == nullptr) {
757 coa = &_cleared_object_areas.emplace_back(end_tile, TileArea(end_tile, 1, 1));
758 }
759
760 /* Hide the tile from the terraforming command */
761 TileIndex old_first_tile = coa->first_tile;
762 coa->first_tile = INVALID_TILE;
763
764 /* CMD_TERRAFORM_LAND may append further items to _cleared_object_areas,
765 * however it will never erase or re-order existing items.
766 * _cleared_object_areas is a value-type self-resizing vector, therefore appending items
767 * may result in a backing-store re-allocation, which would invalidate the coa pointer.
768 * The index of the coa pointer into the _cleared_object_areas vector remains valid,
769 * and can be used safely after the CMD_TERRAFORM_LAND operation.
770 * Deliberately clear the coa pointer to avoid leaving dangling pointers which could
771 * inadvertently be dereferenced.
772 */
773 ClearedObjectArea *begin = _cleared_object_areas.data();
774 assert(coa >= begin && coa < begin + _cleared_object_areas.size());
775 size_t coa_index = coa - begin;
776 assert(coa_index < UINT_MAX); // more than 2**32 cleared areas would be a bug in itself
777 coa = nullptr;
778
779 ret = std::get<0>(Command<CMD_TERRAFORM_LAND>::Do(flags, end_tile, end_tileh & start_tileh, false));
780 _cleared_object_areas[(uint)coa_index].first_tile = old_first_tile;
781 if (ret.Failed()) return CommandCost(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
782 cost.AddCost(ret.GetCost());
783 }
784 cost.AddCost(_price[PR_BUILD_TUNNEL]);
785
786 /* Pay for the rail/road in the tunnel including entrances */
787 switch (transport_type) {
788 case TRANSPORT_ROAD: cost.AddCost((tiles + 2) * RoadBuildCost(roadtype) * 2); break;
789 case TRANSPORT_RAIL: cost.AddCost((tiles + 2) * RailBuildCost(railtype)); break;
790 default: NOT_REACHED();
791 }
792
793 if (flags.Test(DoCommandFlag::Execute)) {
794 Company *c = Company::GetIfValid(company);
795 uint num_pieces = (tiles + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
796 if (transport_type == TRANSPORT_RAIL) {
797 if (c != nullptr) c->infrastructure.rail[railtype] += num_pieces;
798 MakeRailTunnel(start_tile, company, direction, railtype);
799 MakeRailTunnel(end_tile, company, ReverseDiagDir(direction), railtype);
800 AddSideToSignalBuffer(start_tile, INVALID_DIAGDIR, company);
801 YapfNotifyTrackLayoutChange(start_tile, DiagDirToDiagTrack(direction));
802 } else {
803 if (c != nullptr) c->infrastructure.road[roadtype] += num_pieces * 2; // A full diagonal road has two road bits.
804 RoadType road_rt = RoadTypeIsRoad(roadtype) ? roadtype : INVALID_ROADTYPE;
805 RoadType tram_rt = RoadTypeIsTram(roadtype) ? roadtype : INVALID_ROADTYPE;
806 MakeRoadTunnel(start_tile, company, direction, road_rt, tram_rt);
807 MakeRoadTunnel(end_tile, company, ReverseDiagDir(direction), road_rt, tram_rt);
808 }
809 DirtyCompanyInfrastructureWindows(company);
810 }
811
812 return cost;
813}
814
815
821 static inline CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
822{
823 /* Floods can remove anything as well as the scenario editor */
824 if (_current_company == OWNER_WATER || _game_mode == GM_EDITOR) return CommandCost();
825
826 switch (GetTunnelBridgeTransportType(tile)) {
827 case TRANSPORT_ROAD: {
828 RoadType road_rt = GetRoadTypeRoad(tile);
829 RoadType tram_rt = GetRoadTypeTram(tile);
830 Owner road_owner = _current_company;
831 Owner tram_owner = _current_company;
832
833 if (road_rt != INVALID_ROADTYPE) road_owner = GetRoadOwner(tile, RTT_ROAD);
834 if (tram_rt != INVALID_ROADTYPE) tram_owner = GetRoadOwner(tile, RTT_TRAM);
835
836 /* We can remove unowned road and if the town allows it */
837 if (road_owner == OWNER_TOWN && _current_company != OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
838 /* Town does not allow */
839 return CheckTileOwnership(tile);
840 }
841 if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
842 if (tram_owner == OWNER_NONE) tram_owner = _current_company;
843
844 CommandCost ret = CheckOwnership(road_owner, tile);
845 if (ret.Succeeded()) ret = CheckOwnership(tram_owner, tile);
846 return ret;
847 }
848
849 case TRANSPORT_RAIL:
850 return CheckOwnership(GetTileOwner(tile));
851
852 case TRANSPORT_WATER: {
853 /* Always allow to remove aqueducts without owner. */
854 Owner aqueduct_owner = GetTileOwner(tile);
855 if (aqueduct_owner == OWNER_NONE) aqueduct_owner = _current_company;
856 return CheckOwnership(aqueduct_owner);
857 }
858
859 default: NOT_REACHED();
860 }
861}
862
869 static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlags flags)
870{
871 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
872 if (ret.Failed()) return ret;
873
874 TileIndex endtile = GetOtherTunnelEnd(tile);
875
876 ret = TunnelBridgeIsFree(tile, endtile);
877 if (ret.Failed()) return ret;
878
879 _build_tunnel_endtile = endtile;
880
881 Town *t = nullptr;
882 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
883 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
884
885 /* Check if you are allowed to remove the tunnel owned by a town
886 * Removal depends on difficulty settings */
887 ret = CheckforTownRating(flags, t, TownRatingCheckType::TunnelBridgeRemove);
888 if (ret.Failed()) return ret;
889 }
890
891 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
892 * you have a "Poor" (0) town rating */
893 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
894 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
895 }
896
897 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_TUNNEL);
898 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
899
900 if (flags.Test(DoCommandFlag::Execute)) {
901 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
902 /* We first need to request values before calling DoClearSquare */
903 DiagDirection dir = GetTunnelBridgeDirection(tile);
904 Track track = DiagDirToDiagTrack(dir);
905 Owner owner = GetTileOwner(tile);
906
907 Train *v = nullptr;
908 if (HasTunnelBridgeReservation(tile)) {
909 v = GetTrainForReservation(tile, track);
910 if (v != nullptr) FreeTrainTrackReservation(v);
911 }
912
913 if (Company::IsValidID(owner)) {
914 Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
915 DirtyCompanyInfrastructureWindows(owner);
916 }
917
918 DoClearSquare(tile);
919 DoClearSquare(endtile);
920
921 /* cannot use INVALID_DIAGDIR for signal update because the tunnel doesn't exist anymore */
922 AddSideToSignalBuffer(tile, ReverseDiagDir(dir), owner);
923 AddSideToSignalBuffer(endtile, dir, owner);
924
925 YapfNotifyTrackLayoutChange(tile, track);
926 YapfNotifyTrackLayoutChange(endtile, track);
927
928 if (v != nullptr) TryPathReserve(v);
929 } else {
930 /* A full diagonal road tile has two road bits. */
931 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
932 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
933
934 DoClearSquare(tile);
935 DoClearSquare(endtile);
936 }
937 }
938
939 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
940}
941
942
949 static CommandCost DoClearBridge(TileIndex tile, DoCommandFlags flags)
950{
951 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
952 if (ret.Failed()) return ret;
953
954 TileIndex endtile = GetOtherBridgeEnd(tile);
955
956 ret = TunnelBridgeIsFree(tile, endtile);
957 if (ret.Failed()) return ret;
958
959 DiagDirection direction = GetTunnelBridgeDirection(tile);
960 TileIndexDiff delta = TileOffsByDiagDir(direction);
961
962 Town *t = nullptr;
963 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
964 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
965
966 /* Check if you are allowed to remove the bridge owned by a town
967 * Removal depends on difficulty settings */
968 ret = CheckforTownRating(flags, t, TownRatingCheckType::TunnelBridgeRemove);
969 if (ret.Failed()) return ret;
970 }
971
972 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
973 * you have a "Poor" (0) town rating */
974 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
975 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
976 }
977
978 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_BRIDGE);
979 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
980
981 if (flags.Test(DoCommandFlag::Execute)) {
982 /* read this value before actual removal of bridge */
983 bool rail = GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL;
984 Owner owner = GetTileOwner(tile);
985 int height = GetBridgeHeight(tile);
986 Train *v = nullptr;
987
988 if (rail && HasTunnelBridgeReservation(tile)) {
989 v = GetTrainForReservation(tile, DiagDirToDiagTrack(direction));
990 if (v != nullptr) FreeTrainTrackReservation(v);
991 }
992
993 /* Update company infrastructure counts. */
994 if (rail) {
995 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
996 } else if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
997 /* A full diagonal road tile has two road bits. */
998 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
999 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
1000 } else { // Aqueduct
1001 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.water -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
1002 }
1003 DirtyCompanyInfrastructureWindows(owner);
1004
1005 DoClearSquare(tile);
1006 DoClearSquare(endtile);
1007
1008 for (TileIndex c = tile + delta; c != endtile; c += delta) {
1009 /* do not let trees appear from 'nowhere' after removing bridge */
1010 if (IsNormalRoadTile(c) && GetRoadside(c) == Roadside::Trees) {
1011 int minz = GetTileMaxZ(c) + 3;
1012 if (height < minz) SetRoadside(c, Roadside::Paved);
1013 }
1014 ClearBridgeMiddle(c);
1015 MarkTileDirtyByTile(c, height - TileHeight(c));
1016 }
1017
1018 if (rail) {
1019 /* cannot use INVALID_DIAGDIR for signal update because the bridge doesn't exist anymore */
1020 AddSideToSignalBuffer(tile, ReverseDiagDir(direction), owner);
1021 AddSideToSignalBuffer(endtile, direction, owner);
1022
1023 Track track = DiagDirToDiagTrack(direction);
1024 YapfNotifyTrackLayoutChange(tile, track);
1025 YapfNotifyTrackLayoutChange(endtile, track);
1026
1027 if (v != nullptr) TryPathReserve(v, true);
1028 }
1029 }
1030
1031 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
1032}
1033
1040 static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlags flags)
1041{
1042 if (IsTunnel(tile)) {
1043 if (flags.Test(DoCommandFlag::Auto)) return CommandCost(STR_ERROR_MUST_DEMOLISH_TUNNEL_FIRST);
1044 return DoClearTunnel(tile, flags);
1045 } else { // IsBridge(tile)
1046 if (flags.Test(DoCommandFlag::Auto)) return CommandCost(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
1047 return DoClearBridge(tile, flags);
1048 }
1049}
1050
1061 static inline void DrawPillar(const PalSpriteID &psid, int x, int y, int z, uint8_t w, uint8_t h, const SubSprite *subsprite)
1062{
1063 static const int PILLAR_Z_OFFSET = TILE_HEIGHT - BRIDGE_Z_START;
1064 AddSortableSpriteToDraw(psid.sprite, psid.pal, x, y, z, {{0, 0, -PILLAR_Z_OFFSET}, {w, h, BB_HEIGHT_UNDER_BRIDGE}, {0, 0, PILLAR_Z_OFFSET}}, IsTransparencySet(TO_BRIDGES), subsprite);
1065}
1066
1078 static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID &psid, int x, int y, int w, int h)
1079{
1080 int cur_z;
1081 for (cur_z = z_top; cur_z >= z_bottom; cur_z -= TILE_HEIGHT) {
1082 DrawPillar(psid, x, y, cur_z, w, h, nullptr);
1083 }
1084 return cur_z;
1085}
1086
1098 static void DrawBridgePillars(const PalSpriteID &psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
1099{
1100 static const int bounding_box_size[2] = {16, 2};
1101 static const int back_pillar_offset[2] = { 0, 9};
1102
1103 static const int INF = 1000;
1104 static const SubSprite half_pillar_sub_sprite[2][2] = {
1105 { { -14, -INF, INF, INF }, { -INF, -INF, -15, INF } }, // X axis, north and south
1106 { { -INF, -INF, 15, INF }, { 16, -INF, INF, INF } }, // Y axis, north and south
1107 };
1108
1109 if (psid.sprite == 0) return;
1110
1111 /* Determine ground height under pillars */
1112 DiagDirection south_dir = AxisToDiagDir(axis);
1113 int z_front_north = ti->z;
1114 int z_back_north = ti->z;
1115 int z_front_south = ti->z;
1116 int z_back_south = ti->z;
1117 GetSlopePixelZOnEdge(ti->tileh, south_dir, z_front_south, z_back_south);
1118 GetSlopePixelZOnEdge(ti->tileh, ReverseDiagDir(south_dir), z_front_north, z_back_north);
1119
1120 /* Shared height of pillars */
1121 int z_front = std::max(z_front_north, z_front_south);
1122 int z_back = std::max(z_back_north, z_back_south);
1123
1124 /* x and y size of bounding-box of pillars */
1125 int w = bounding_box_size[axis];
1126 int h = bounding_box_size[OtherAxis(axis)];
1127 /* sprite position of back facing pillar */
1128 int x_back = x - back_pillar_offset[axis];
1129 int y_back = y - back_pillar_offset[OtherAxis(axis)];
1130
1131 /* Draw front pillars */
1132 int bottom_z = DrawPillarColumn(z_front, z_bridge, psid, x, y, w, h);
1133 if (z_front_north < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1134 if (z_front_south < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1135
1136 /* Draw back pillars, skip top two parts, which are hidden by the bridge */
1137 int z_bridge_back = z_bridge - 2 * (int)TILE_HEIGHT;
1138 if (drawfarpillar && (z_back_north <= z_bridge_back || z_back_south <= z_bridge_back)) {
1139 bottom_z = DrawPillarColumn(z_back, z_bridge_back, psid, x_back, y_back, w, h);
1140 if (z_back_north < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1141 if (z_back_south < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1142 }
1143}
1144
1154 static void GetBridgeRoadCatenary(const RoadTypeInfo *rti, TileIndex head_tile, int offset, bool head, SpriteID &spr_back, SpriteID &spr_front)
1155{
1156 static const SpriteID back_offsets[6] = { 95, 96, 99, 102, 100, 101 };
1157 static const SpriteID front_offsets[6] = { 97, 98, 103, 106, 104, 105 };
1158
1159 /* Simplified from DrawRoadTypeCatenary() to remove all the special cases required for regular ground road */
1160 spr_back = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_BACK, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1161 spr_front = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_FRONT, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1162 if (spr_back == 0 && spr_front == 0) {
1163 spr_back = SPR_TRAMWAY_BASE + back_offsets[offset];
1164 spr_front = SPR_TRAMWAY_BASE + front_offsets[offset];
1165 } else {
1166 if (spr_back != 0) spr_back += 23 + offset;
1167 if (spr_front != 0) spr_front += 23 + offset;
1168 }
1169}
1170
1181 static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head, bool is_custom_layout)
1182{
1183 RoadType road_rt = GetRoadTypeRoad(head_tile);
1184 RoadType tram_rt = GetRoadTypeTram(head_tile);
1185 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1186 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1187
1188 SpriteID seq_back[4] = { 0 };
1189 bool trans_back[4] = { false };
1190 SpriteID seq_front[4] = { 0 };
1191 bool trans_front[4] = { false };
1192
1193 static const SpriteID overlay_offsets[6] = { 0, 1, 11, 12, 13, 14 };
1194 if (head || !IsInvisibilitySet(TO_BRIDGES)) {
1195 /* Road underlay takes precedence over tram */
1196 trans_back[0] = !head && IsTransparencySet(TO_BRIDGES);
1197 if (road_rti != nullptr) {
1198 if (road_rti->UsesOverlay()) {
1199 seq_back[0] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1200 } else if (is_custom_layout) {
1201 /* For custom layouts draw a custom bridge deck. */
1202 seq_back[0] = SPR_BRIDGE_DECKS_ROAD + offset;
1203 }
1204 } else if (tram_rti != nullptr) {
1205 if (tram_rti->UsesOverlay()) {
1206 seq_back[0] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1207 } else {
1208 seq_back[0] = SPR_TRAMWAY_BRIDGE + offset;
1209 }
1210 }
1211
1212 /* Draw road overlay */
1213 trans_back[1] = !head && IsTransparencySet(TO_BRIDGES);
1214 if (road_rti != nullptr) {
1215 if (road_rti->UsesOverlay()) {
1216 seq_back[1] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1217 if (seq_back[1] != 0) seq_back[1] += overlay_offsets[offset];
1218 }
1219 }
1220
1221 /* Draw tram overlay */
1222 trans_back[2] = !head && IsTransparencySet(TO_BRIDGES);
1223 if (tram_rti != nullptr) {
1224 if (tram_rti->UsesOverlay()) {
1225 seq_back[2] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1226 if (seq_back[2] != 0) seq_back[2] += overlay_offsets[offset];
1227 } else if (road_rti != nullptr) {
1228 seq_back[2] = SPR_TRAMWAY_OVERLAY + overlay_offsets[offset];
1229 }
1230 }
1231
1232 /* Road catenary takes precedence over tram */
1233 trans_back[3] = IsTransparencySet(TO_CATENARY);
1234 trans_front[0] = IsTransparencySet(TO_CATENARY);
1235 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1236 GetBridgeRoadCatenary(road_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1237 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1238 GetBridgeRoadCatenary(tram_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1239 }
1240 }
1241
1242 static constexpr SpriteBounds back_bounds[6] = {
1243 {{}, {0, TILE_SIZE, 40}, {}},
1244 {{}, {TILE_SIZE, 0, 40}, {}},
1245 {{}, {TILE_SIZE, 0, 40}, {}},
1246 {{}, {0, TILE_SIZE, 40}, {}},
1247 {{}, {TILE_SIZE, 0, 40}, {}},
1248 {{}, {0, TILE_SIZE, 40}, {}},
1249 };
1250
1251 /* The sprites under the vehicles are drawn as SpriteCombine. StartSpriteCombine() has already been called
1252 * The bounding boxes here are the same as for bridge front/roof */
1253 for (uint i = 0; i < lengthof(seq_back); ++i) {
1254 if (seq_back[i] != 0) {
1255 AddSortableSpriteToDraw(seq_back[i], PAL_NONE, x, y, z, back_bounds[offset], trans_back[i]);
1256 }
1257 }
1258
1259 /* Start a new SpriteCombine for the front part */
1260 EndSpriteCombine();
1261 StartSpriteCombine();
1262
1263 static constexpr SpriteBounds front_bounds[6] = {
1264 {{15, 0, 0}, {0, TILE_SIZE, 40}, {-15, 0, 0}},
1265 {{0, 15, 0}, {TILE_SIZE, 0, 40}, {0, -15, 0}},
1266 {{0, 15, 0}, {TILE_SIZE, 0, 40}, {0, -15, 0}},
1267 {{15, 0, 0}, {0, TILE_SIZE, 40}, {-15, 0, 0}},
1268 {{0, 15, 0}, {TILE_SIZE, 0, 40}, {0, -15, 0}},
1269 {{15, 0, 0}, {0, TILE_SIZE, 40}, {-15, 0, 0}},
1270 };
1271
1272 for (uint i = 0; i < lengthof(seq_front); ++i) {
1273 if (seq_front[i] != 0) {
1274 AddSortableSpriteToDraw(seq_front[i], PAL_NONE, x, y, z, front_bounds[offset], trans_front[i]);
1275 }
1276 }
1277}
1278
1292 static void DrawTile_TunnelBridge(TileInfo *ti)
1293{
1294 TransportType transport_type = GetTunnelBridgeTransportType(ti->tile);
1295 DiagDirection tunnelbridge_direction = GetTunnelBridgeDirection(ti->tile);
1296
1297 if (IsTunnel(ti->tile)) {
1298 /* Front view of tunnel bounding boxes:
1299 *
1300 * 122223 <- BB_Z_SEPARATOR
1301 * 1 3
1302 * 1 3 1,3 = empty helper BB
1303 * 1 3 2 = SpriteCombine of tunnel-roof and catenary (tram & elrail)
1304 *
1305 */
1306
1307 /* Tunnel sprites are positioned at 15,15, but the bounding box covers most of the tile. */
1308 static constexpr SpriteBounds roof_bounds[DIAGDIR_END] = {
1309 {{0, 1, BB_Z_SEPARATOR}, {TILE_SIZE, TILE_SIZE - 1, 1}, {TILE_SIZE - 1, TILE_SIZE - 2, -BB_Z_SEPARATOR}}, // NE
1310 {{1, 0, BB_Z_SEPARATOR}, {TILE_SIZE - 1, TILE_SIZE, 1}, {TILE_SIZE - 2, TILE_SIZE - 1, -BB_Z_SEPARATOR}}, // SE
1311 {{0, 1, BB_Z_SEPARATOR}, {TILE_SIZE, TILE_SIZE - 1, 1}, {TILE_SIZE - 1, TILE_SIZE - 2, -BB_Z_SEPARATOR}}, // SW
1312 {{1, 0, BB_Z_SEPARATOR}, {TILE_SIZE - 1, TILE_SIZE, 1}, {TILE_SIZE - 2, TILE_SIZE - 1, -BB_Z_SEPARATOR}}, // NW
1313 };
1314
1315 /* Catenary sprites are positioned at 0,0, with the same bounding box as above. */
1316 static constexpr SpriteBounds catenary_bounds[DIAGDIR_END] = {
1317 {{0, 1, BB_Z_SEPARATOR}, {TILE_SIZE, TILE_SIZE - 1, 1}, {0, -1, -BB_Z_SEPARATOR}}, // NE
1318 {{1, 0, BB_Z_SEPARATOR}, {TILE_SIZE - 1, TILE_SIZE, 1}, {-1, 0, -BB_Z_SEPARATOR}}, // SE
1319 {{0, 1, BB_Z_SEPARATOR}, {TILE_SIZE, TILE_SIZE - 1, 1}, {0, -1, -BB_Z_SEPARATOR}}, // SW
1320 {{1, 0, BB_Z_SEPARATOR}, {TILE_SIZE - 1, TILE_SIZE, 1}, {-1, 0, -BB_Z_SEPARATOR}}, // NW
1321 };
1322
1323 static constexpr SpriteBounds rear_sep[DIAGDIR_END] = {
1324 {{}, {TILE_SIZE, 1, TILE_HEIGHT}, {}}, // NE
1325 {{}, {1, TILE_SIZE, TILE_HEIGHT}, {}}, // SE
1326 {{}, {TILE_SIZE, 1, TILE_HEIGHT}, {}}, // SW
1327 {{}, {1, TILE_SIZE, TILE_HEIGHT}, {}}, // NW
1328 };
1329
1330 static constexpr SpriteBounds front_sep[DIAGDIR_END] = {
1331 {{0, TILE_SIZE - 1, 0}, {TILE_SIZE, 1, TILE_HEIGHT}, {}}, // NE
1332 {{TILE_SIZE - 1, 0, 0}, {1, TILE_SIZE, TILE_HEIGHT}, {}}, // SE
1333 {{0, TILE_SIZE - 1, 0}, {TILE_SIZE, 1, TILE_HEIGHT}, {}}, // SW
1334 {{TILE_SIZE - 1, 0, 0}, {1, TILE_SIZE, TILE_HEIGHT}, {}}, // NW
1335 };
1336
1337 bool catenary = false;
1338
1339 SpriteID image;
1340 SpriteID railtype_overlay = 0;
1341 if (transport_type == TRANSPORT_RAIL) {
1342 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1343 image = rti->base_sprites.tunnel;
1344 if (rti->UsesOverlay()) {
1345 /* Check if the railtype has custom tunnel portals. */
1346 railtype_overlay = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL_PORTAL);
1347 if (railtype_overlay != 0) image = SPR_RAILTYPE_TUNNEL_BASE; // Draw blank grass tunnel base.
1348 }
1349 } else {
1350 image = SPR_TUNNEL_ENTRY_REAR_ROAD;
1351 }
1352
1353 if (HasTunnelBridgeSnowOrDesert(ti->tile)) image += railtype_overlay != 0 ? 8 : 32;
1354
1355 image += tunnelbridge_direction * 2;
1356 DrawGroundSprite(image, PAL_NONE);
1357
1358 if (transport_type == TRANSPORT_ROAD) {
1359 RoadType road_rt = GetRoadTypeRoad(ti->tile);
1360 RoadType tram_rt = GetRoadTypeTram(ti->tile);
1361 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1362 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1363 uint sprite_offset = DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? 1 : 0;
1364 bool draw_underlay = true;
1365
1366 /* Road underlay takes precedence over tram */
1367 if (road_rti != nullptr) {
1368 if (road_rti->UsesOverlay()) {
1369 SpriteID ground = GetCustomRoadSprite(road_rti, ti->tile, ROTSG_TUNNEL);
1370 if (ground != 0) {
1371 DrawGroundSprite(ground + tunnelbridge_direction, PAL_NONE);
1372 draw_underlay = false;
1373 }
1374 }
1375 } else {
1376 if (tram_rti->UsesOverlay()) {
1377 SpriteID ground = GetCustomRoadSprite(tram_rti, ti->tile, ROTSG_TUNNEL);
1378 if (ground != 0) {
1379 DrawGroundSprite(ground + tunnelbridge_direction, PAL_NONE);
1380 draw_underlay = false;
1381 }
1382 }
1383 }
1384
1385 DrawRoadOverlays(ti, PAL_NONE, road_rti, tram_rti, sprite_offset, sprite_offset, draw_underlay);
1386
1387 /* Road catenary takes precedence over tram */
1388 SpriteID catenary_sprite_base = 0;
1389 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1390 catenary_sprite_base = GetCustomRoadSprite(road_rti, ti->tile, ROTSG_CATENARY_FRONT);
1391 if (catenary_sprite_base == 0) {
1392 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1393 } else {
1394 catenary_sprite_base += 19;
1395 }
1396 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1397 catenary_sprite_base = GetCustomRoadSprite(tram_rti, ti->tile, ROTSG_CATENARY_FRONT);
1398 if (catenary_sprite_base == 0) {
1399 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1400 } else {
1401 catenary_sprite_base += 19;
1402 }
1403 }
1404
1405 if (catenary_sprite_base != 0) {
1406 catenary = true;
1407 StartSpriteCombine();
1408 AddSortableSpriteToDraw(catenary_sprite_base + tunnelbridge_direction, PAL_NONE, *ti, catenary_bounds[tunnelbridge_direction], IsTransparencySet(TO_CATENARY));
1409 }
1410 } else {
1411 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1412 if (rti->UsesOverlay()) {
1413 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL);
1414 if (surface != 0) DrawGroundSprite(surface + tunnelbridge_direction, PAL_NONE);
1415 }
1416
1417 /* PBS debugging, draw reserved tracks darker */
1418 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1419 if (rti->UsesOverlay()) {
1420 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1421 DrawGroundSprite(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH);
1422 } else {
1423 DrawGroundSprite(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
1424 }
1425 }
1426
1427 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1428 /* Maybe draw pylons on the entry side */
1429 DrawRailCatenary(ti);
1430
1431 catenary = true;
1432 StartSpriteCombine();
1433 /* Draw wire above the ramp */
1434 DrawRailCatenaryOnTunnel(ti);
1435 }
1436 }
1437
1438 if (railtype_overlay != 0 && !catenary) StartSpriteCombine();
1439
1440 AddSortableSpriteToDraw(image + 1, PAL_NONE, *ti, roof_bounds[tunnelbridge_direction], false);
1441 /* Draw railtype tunnel portal overlay if defined. */
1442 if (railtype_overlay != 0) AddSortableSpriteToDraw(railtype_overlay + tunnelbridge_direction, PAL_NONE, *ti, roof_bounds[tunnelbridge_direction], false);
1443
1444 if (catenary || railtype_overlay != 0) EndSpriteCombine();
1445
1446 /* Add helper BB for sprite sorting that separates the tunnel from things beside of it. */
1447 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, *ti, rear_sep[tunnelbridge_direction]);
1448 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, *ti, front_sep[tunnelbridge_direction]);
1449
1450 DrawBridgeMiddle(ti, BridgePillarFlag::EdgeNE + tunnelbridge_direction);
1451 } else { // IsBridge(ti->tile)
1452 DrawFoundation(ti, GetBridgeFoundation(ti->tileh, DiagDirToAxis(tunnelbridge_direction)));
1453 bool is_custom_layout = false; // Set if rail/road bridge uses a custom layout.
1454
1455 uint base_offset = GetBridgeRampDirectionBaseOffset(tunnelbridge_direction);
1456 std::span<const PalSpriteID> psid;
1457 if (transport_type != TRANSPORT_WATER) {
1458 BridgeType bridge_type = GetBridgeType(ti->tile);
1459 if (ti->tileh == SLOPE_FLAT) base_offset += 4; // sloped bridge head
1460 base_offset += GetBridgeSpriteTableBaseOffset(transport_type, ti->tile);
1461 psid = GetBridgeSpriteTable(bridge_type, BRIDGE_PIECE_HEAD);
1462 is_custom_layout = BridgeHasCustomSpriteTable(bridge_type, BRIDGE_PIECE_HEAD);
1463 } else {
1464 psid = _aqueduct_sprite_table_heads;
1465 }
1466 psid = psid.subspan(base_offset, 1);
1467
1468 if (!HasTunnelBridgeSnowOrDesert(ti->tile)) {
1469 TileIndex next = ti->tile + TileOffsByDiagDir(tunnelbridge_direction);
1470 if (ti->tileh != SLOPE_FLAT && ti->z == 0 && HasTileWaterClass(next) && GetWaterClass(next) == WaterClass::Sea) {
1471 DrawShoreTile(ti->tileh);
1472 } else {
1473 DrawClearLandTile(ti, 3);
1474 }
1475 } else {
1476 DrawGroundSprite(SPR_FLAT_SNOW_DESERT_TILE + SlopeToSpriteOffset(ti->tileh), PAL_NONE);
1477 }
1478
1479 /* draw ramp */
1480
1481 /* Draw Trambits and PBS Reservation as SpriteCombine */
1482 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1483
1484 /* HACK set the height of the BB of a sloped ramp to 1 so a vehicle on
1485 * it doesn't disappear behind it
1486 */
1487 /* Bridge heads are drawn solid no matter how invisibility/transparency is set */
1488 AddSortableSpriteToDraw(psid[0].sprite, psid[0].pal, *ti, {{}, {TILE_SIZE, TILE_SIZE, static_cast<uint8_t>(ti->tileh == SLOPE_FLAT ? 0 : TILE_HEIGHT)}, {}});
1489
1490 if (transport_type == TRANSPORT_ROAD) {
1491 uint offset = tunnelbridge_direction;
1492 int z = ti->z;
1493 if (ti->tileh != SLOPE_FLAT) {
1494 offset = (offset + 1) & 1;
1495 z += TILE_HEIGHT;
1496 } else {
1497 offset += 2;
1498 }
1499
1500 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1501 DrawBridgeRoadBits(ti->tile, ti->x, ti->y, z, offset, true, is_custom_layout);
1502
1503 EndSpriteCombine();
1504 } else if (transport_type == TRANSPORT_RAIL) {
1505 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1506 if (is_custom_layout || rti->UsesOverlay()) {
1507 SpriteID surface = rti->UsesOverlay() ? GetCustomRailSprite(rti, ti->tile, RTSG_BRIDGE) : rti->base_sprites.bridge_deck;
1508 if (surface != 0) {
1509 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1510 AddSortableSpriteToDraw(surface + ((DiagDirToAxis(tunnelbridge_direction) == AXIS_X) ? RTBO_X : RTBO_Y), PAL_NONE, *ti, {{0, 0, TILE_HEIGHT}, {TILE_SIZE, TILE_SIZE, 0}, {}});
1511 } else {
1512 AddSortableSpriteToDraw(surface + RTBO_SLOPE + tunnelbridge_direction, PAL_NONE, *ti, {{}, {TILE_SIZE, TILE_SIZE, TILE_HEIGHT}, {}});
1513 }
1514 }
1515 }
1516
1517 /* PBS debugging, draw reserved tracks darker */
1518 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1519 if (rti->UsesOverlay()) {
1520 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1521 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1522 AddSortableSpriteToDraw(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH, *ti, {{0, 0, TILE_HEIGHT}, {TILE_SIZE, TILE_SIZE, 0}, {}});
1523 } else {
1524 AddSortableSpriteToDraw(overlay + RTO_SLOPE_NE + tunnelbridge_direction, PALETTE_CRASH, *ti, {{}, {TILE_SIZE, TILE_SIZE, TILE_HEIGHT}, {}});
1525 }
1526 } else {
1527 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1528 AddSortableSpriteToDraw(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, *ti, {{0, 0, TILE_HEIGHT}, {TILE_SIZE, TILE_SIZE, 0}, {}});
1529 } else {
1530 AddSortableSpriteToDraw(rti->base_sprites.single_sloped + tunnelbridge_direction, PALETTE_CRASH, *ti, {{}, {TILE_SIZE, TILE_SIZE, TILE_HEIGHT}, {}});
1531 }
1532 }
1533 }
1534
1535 EndSpriteCombine();
1536 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1537 DrawRailCatenary(ti);
1538 }
1539 }
1540
1541 BridgePillarFlags blocked_pillars;
1542 if (DiagDirToAxis(tunnelbridge_direction) == AXIS_X) {
1543 blocked_pillars = {BridgePillarFlag::EdgeSW, BridgePillarFlag::EdgeNE};
1544 } else {
1545 blocked_pillars = {BridgePillarFlag::EdgeNW, BridgePillarFlag::EdgeSE};
1546 }
1547 DrawBridgeMiddle(ti, blocked_pillars);
1548 }
1549}
1550
1551
1570 static BridgePieces CalcBridgePiece(uint north, uint south)
1571{
1572 if (north == 1) {
1573 return BRIDGE_PIECE_NORTH;
1574 } else if (south == 1) {
1575 return BRIDGE_PIECE_SOUTH;
1576 } else if (north < south) {
1577 return north & 1 ? BRIDGE_PIECE_INNER_SOUTH : BRIDGE_PIECE_INNER_NORTH;
1578 } else if (north > south) {
1579 return south & 1 ? BRIDGE_PIECE_INNER_NORTH : BRIDGE_PIECE_INNER_SOUTH;
1580 } else {
1581 return north & 1 ? BRIDGE_PIECE_MIDDLE_EVEN : BRIDGE_PIECE_MIDDLE_ODD;
1582 }
1583}
1584
1594 static BridgePillarFlags GetBridgeTilePillarFlags(TileIndex tile, TileIndex rampnorth, TileIndex rampsouth, BridgeType type, TransportType transport_type)
1595{
1596 if (transport_type == TRANSPORT_WATER) return BRIDGEPILLARFLAGS_ALL_CORNERS;
1597
1598 const BridgeSpec *spec = GetBridgeSpec(type);
1599 if (!spec->ctrl_flags.Test(BridgeSpec::ControlFlag::InvalidPillarFlags)) {
1600 BridgePieces piece = CalcBridgePiece(GetTunnelBridgeLength(tile, rampnorth) + 1, GetTunnelBridgeLength(tile, rampsouth) + 1);
1601 Axis axis = TileX(rampnorth) == TileX(rampsouth) ? AXIS_Y : AXIS_X;
1602
1603 return spec->pillar_flags[piece][axis == AXIS_Y ? 1 : 0];
1604 }
1605
1606 return BRIDGEPILLARFLAGS_ALL_CORNERS;
1607}
1608
1614 void DrawBridgeMiddle(const TileInfo *ti, BridgePillarFlags blocked_pillars)
1615{
1616 /* Sectional view of bridge bounding boxes:
1617 *
1618 * 1 2 1,2 = SpriteCombine of Bridge front/(back&floor) and RoadCatenary
1619 * 1 2 3 = empty helper BB
1620 * 1 7 2 4,5 = pillars under higher bridges
1621 * 1 6 88888 6 2 6 = elrail-pylons
1622 * 1 6 88888 6 2 7 = elrail-wire
1623 * 1 6 88888 6 2 <- TILE_HEIGHT 8 = rail-vehicle on bridge
1624 * 3333333333333 <- BB_Z_SEPARATOR
1625 * <- unused
1626 * 4 5 <- BB_HEIGHT_UNDER_BRIDGE
1627 * 4 5
1628 * 4 5
1629 *
1630 */
1631
1632 if (!IsBridgeAbove(ti->tile)) return;
1633
1634 TileIndex rampnorth = GetNorthernBridgeEnd(ti->tile);
1635 TileIndex rampsouth = GetSouthernBridgeEnd(ti->tile);
1636 TransportType transport_type = GetTunnelBridgeTransportType(rampsouth);
1637 Axis axis = GetBridgeAxis(ti->tile);
1638 BridgePillarFlags pillars;
1639 bool is_custom_layout; // Set if rail/road bridge uses a custom layout.
1640
1641 uint base_offset = GetBridgeMiddleAxisBaseOffset(axis);
1642 std::span<const PalSpriteID> psid;
1643 bool drawfarpillar;
1644 if (transport_type != TRANSPORT_WATER) {
1645 BridgeType bridge_type = GetBridgeType(rampsouth);
1646 BridgePieces bridge_piece = CalcBridgePiece(GetTunnelBridgeLength(ti->tile, rampnorth) + 1, GetTunnelBridgeLength(ti->tile, rampsouth) + 1);
1647 drawfarpillar = !HasBit(GetBridgeSpec(bridge_type)->flags, 0);
1648 base_offset += GetBridgeSpriteTableBaseOffset(transport_type, rampsouth);
1649 psid = GetBridgeSpriteTable(bridge_type, bridge_piece);
1650 pillars = GetBridgeTilePillarFlags(ti->tile, rampnorth, rampsouth, bridge_type, transport_type);
1651 is_custom_layout = BridgeHasCustomSpriteTable(bridge_type, bridge_piece);
1652 } else {
1653 drawfarpillar = true;
1654 psid = _aqueduct_sprite_table_middle;
1655 pillars = BRIDGEPILLARFLAGS_ALL_CORNERS;
1656 }
1657 psid = psid.subspan(base_offset, 3);
1658
1659 int x = ti->x;
1660 int y = ti->y;
1661 uint bridge_z = GetBridgePixelHeight(rampsouth);
1662 int z = bridge_z - BRIDGE_Z_START;
1663
1664 /* Add a bounding box that separates the bridge from things below it. */
1665 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, x, y, bridge_z - TILE_HEIGHT + BB_Z_SEPARATOR, {{}, {TILE_SIZE, TILE_SIZE, 1}, {}});
1666
1667 /* Draw Trambits as SpriteCombine */
1668 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1669
1670 /* Draw floor and far part of bridge*/
1671 if (!IsInvisibilitySet(TO_BRIDGES)) {
1672 if (axis == AXIS_X) {
1673 AddSortableSpriteToDraw(psid[0].sprite, psid[0].pal, x, y, z, {{0, 0, BRIDGE_Z_START}, {TILE_SIZE, 1, 40}, {0, 0, -BRIDGE_Z_START}}, IsTransparencySet(TO_BRIDGES));
1674 } else {
1675 AddSortableSpriteToDraw(psid[0].sprite, psid[0].pal, x, y, z, {{0, 0, BRIDGE_Z_START}, {1, TILE_SIZE, 40}, {0, 0, -BRIDGE_Z_START}}, IsTransparencySet(TO_BRIDGES));
1676 }
1677 }
1678
1679 if (transport_type == TRANSPORT_ROAD) {
1680 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1681 DrawBridgeRoadBits(rampsouth, x, y, bridge_z, axis ^ 1, false, is_custom_layout);
1682 } else if (transport_type == TRANSPORT_RAIL) {
1683 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(rampsouth));
1684 if ((is_custom_layout || rti->UsesOverlay()) && !IsInvisibilitySet(TO_BRIDGES)) {
1685 SpriteID surface = rti->UsesOverlay() ? GetCustomRailSprite(rti, rampsouth, RTSG_BRIDGE, TCX_ON_BRIDGE) : rti->base_sprites.bridge_deck;
1686 if (surface != 0) {
1687 AddSortableSpriteToDraw(surface + axis, PAL_NONE, x, y, bridge_z, {{}, {TILE_SIZE, TILE_SIZE, 0}, {}}, IsTransparencySet(TO_BRIDGES));
1688 }
1689 }
1690
1691 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && !IsInvisibilitySet(TO_BRIDGES) && HasTunnelBridgeReservation(rampnorth)) {
1692 if (rti->UsesOverlay()) {
1693 SpriteID overlay = GetCustomRailSprite(rti, rampnorth, RTSG_OVERLAY, TCX_ON_BRIDGE);
1694 AddSortableSpriteToDraw(overlay + RTO_X + axis, PALETTE_CRASH, ti->x, ti->y, bridge_z, {{}, {TILE_SIZE, TILE_SIZE, 0}, {}}, IsTransparencySet(TO_BRIDGES));
1695 } else {
1696 AddSortableSpriteToDraw(axis == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, ti->x, ti->y, bridge_z, {{}, {TILE_SIZE, TILE_SIZE, 0}, {}}, IsTransparencySet(TO_BRIDGES));
1697 }
1698 }
1699
1700 EndSpriteCombine();
1701
1702 if (HasRailCatenaryDrawn(GetRailType(rampsouth))) {
1703 DrawRailCatenaryOnBridge(ti);
1704 }
1705 }
1706
1707 /* draw roof, the component of the bridge which is logically between the vehicle and the camera */
1708 if (!IsInvisibilitySet(TO_BRIDGES)) {
1709 if (axis == AXIS_X) {
1710 y += 12;
1711 if (psid[1].sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid[1].sprite, psid[1].pal, x, y, z, {{0, 3, BRIDGE_Z_START}, {TILE_SIZE, 1, 40}, {0, -3, -BRIDGE_Z_START}}, IsTransparencySet(TO_BRIDGES));
1712 } else {
1713 x += 12;
1714 if (psid[1].sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid[1].sprite, psid[1].pal, x, y, z, {{3, 0, BRIDGE_Z_START}, {1, TILE_SIZE, 40}, {-3, 0, -BRIDGE_Z_START}}, IsTransparencySet(TO_BRIDGES));
1715 }
1716 }
1717
1718 /* Draw TramFront as SpriteCombine */
1719 if (transport_type == TRANSPORT_ROAD) EndSpriteCombine();
1720
1721 /* Do not draw anything more if bridges are invisible */
1722 if (IsInvisibilitySet(TO_BRIDGES)) return;
1723
1724 if (blocked_pillars.Any(pillars)) return;
1725 DrawBridgePillars(psid[2], ti, axis, drawfarpillar, x, y, z);
1726}
1727
1728
1729static int GetSlopePixelZ_TunnelBridge(TileIndex tile, uint x, uint y, bool ground_vehicle)
1730{
1731 auto [tileh, z] = GetTilePixelSlope(tile);
1732
1733 x &= 0xF;
1734 y &= 0xF;
1735
1736 if (IsTunnel(tile)) {
1737 /* In the tunnel entrance? */
1738 if (ground_vehicle) return z;
1739 } else { // IsBridge(tile)
1740 DiagDirection dir = GetTunnelBridgeDirection(tile);
1741 z += ApplyPixelFoundationToSlope(GetBridgeFoundation(tileh, DiagDirToAxis(dir)), tileh);
1742
1743 /* On the bridge ramp? */
1744 if (ground_vehicle) {
1745 if (tileh != SLOPE_FLAT) return z + TILE_HEIGHT;
1746
1747 switch (dir) {
1748 default: NOT_REACHED();
1749 case DIAGDIR_NE: tileh = SLOPE_NE; break;
1750 case DIAGDIR_SE: tileh = SLOPE_SE; break;
1751 case DIAGDIR_SW: tileh = SLOPE_SW; break;
1752 case DIAGDIR_NW: tileh = SLOPE_NW; break;
1753 }
1754 }
1755 }
1756
1757 return z + GetPartialPixelZ(x, y, tileh);
1758}
1759
1760static Foundation GetFoundation_TunnelBridge(TileIndex tile, Slope tileh)
1761{
1762 return IsTunnel(tile) ? FOUNDATION_NONE : GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(tile)));
1763}
1764
1765static void GetTileDesc_TunnelBridge(TileIndex tile, TileDesc &td)
1766{
1767 TransportType tt = GetTunnelBridgeTransportType(tile);
1768
1769 if (IsTunnel(tile)) {
1770 td.str = (tt == TRANSPORT_RAIL) ? STR_LAI_TUNNEL_DESCRIPTION_RAILROAD : STR_LAI_TUNNEL_DESCRIPTION_ROAD;
1771 } else { // IsBridge(tile)
1772 td.str = (tt == TRANSPORT_WATER) ? STR_LAI_BRIDGE_DESCRIPTION_AQUEDUCT : GetBridgeSpec(GetBridgeType(tile))->transport_name[tt];
1773 }
1774 td.owner[0] = GetTileOwner(tile);
1775
1776 Owner road_owner = INVALID_OWNER;
1777 Owner tram_owner = INVALID_OWNER;
1778 RoadType road_rt = (tt == TRANSPORT_ROAD) ? GetRoadTypeRoad(tile) : INVALID_ROADTYPE;
1779 RoadType tram_rt = (tt == TRANSPORT_ROAD) ? GetRoadTypeTram(tile) : INVALID_ROADTYPE;
1780 if (road_rt != INVALID_ROADTYPE) {
1781 const RoadTypeInfo *rti = GetRoadTypeInfo(road_rt);
1782 td.roadtype = rti->strings.name;
1783 td.road_speed = rti->max_speed / 2;
1784 road_owner = GetRoadOwner(tile, RTT_ROAD);
1785 }
1786 if (tram_rt != INVALID_ROADTYPE) {
1787 const RoadTypeInfo *rti = GetRoadTypeInfo(tram_rt);
1788 td.tramtype = rti->strings.name;
1789 td.tram_speed = rti->max_speed / 2;
1790 tram_owner = GetRoadOwner(tile, RTT_TRAM);
1791 }
1792
1793 /* Is there a mix of owners? */
1794 if ((tram_owner != INVALID_OWNER && tram_owner != td.owner[0]) ||
1795 (road_owner != INVALID_OWNER && road_owner != td.owner[0])) {
1796 uint i = 1;
1797 if (road_owner != INVALID_OWNER) {
1798 td.owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
1799 td.owner[i] = road_owner;
1800 i++;
1801 }
1802 if (tram_owner != INVALID_OWNER) {
1803 td.owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
1804 td.owner[i] = tram_owner;
1805 }
1806 }
1807
1808 if (tt == TRANSPORT_RAIL) {
1809 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
1810 td.rail_speed = rti->max_speed;
1811 td.railtype = rti->strings.name;
1812
1813 if (!IsTunnel(tile)) {
1814 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1815 /* rail speed special-cases 0 as unlimited, hides display of limit etc. */
1816 if (spd == UINT16_MAX) spd = 0;
1817 if (td.rail_speed == 0 || spd < td.rail_speed) {
1818 td.rail_speed = spd;
1819 }
1820 }
1821 } else if (tt == TRANSPORT_ROAD && !IsTunnel(tile)) {
1822 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1823 /* road speed special-cases 0 as unlimited, hides display of limit etc. */
1824 if (spd == UINT16_MAX) spd = 0;
1825 if (road_rt != INVALID_ROADTYPE && (td.road_speed == 0 || spd < td.road_speed)) td.road_speed = spd;
1826 if (tram_rt != INVALID_ROADTYPE && (td.tram_speed == 0 || spd < td.tram_speed)) td.tram_speed = spd;
1827 }
1828}
1829
1830
1831static void TileLoop_TunnelBridge(TileIndex tile)
1832{
1833 bool snow_or_desert = HasTunnelBridgeSnowOrDesert(tile);
1834 switch (_settings_game.game_creation.landscape) {
1835 case LandscapeType::Arctic: {
1836 /* As long as we do not have a snow density, we want to use the density
1837 * from the entry edge. For tunnels this is the lowest point for bridges the highest point.
1838 * (Independent of foundations) */
1839 int z = IsBridge(tile) ? GetTileMaxZ(tile) : GetTileZ(tile);
1840 if (snow_or_desert != (z > GetSnowLine())) {
1841 SetTunnelBridgeSnowOrDesert(tile, !snow_or_desert);
1842 MarkTileDirtyByTile(tile);
1843 }
1844 break;
1845 }
1846
1847 case LandscapeType::Tropic:
1848 if (GetTropicZone(tile) == TROPICZONE_DESERT && !snow_or_desert) {
1849 SetTunnelBridgeSnowOrDesert(tile, true);
1850 MarkTileDirtyByTile(tile);
1851 }
1852 break;
1853
1854 default:
1855 break;
1856 }
1857}
1858
1859static TrackStatus GetTileTrackStatus_TunnelBridge(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
1860{
1861 TransportType transport_type = GetTunnelBridgeTransportType(tile);
1862 if (transport_type != mode || (transport_type == TRANSPORT_ROAD && !HasTileRoadType(tile, (RoadTramType)sub_mode))) return 0;
1863
1864 DiagDirection dir = GetTunnelBridgeDirection(tile);
1865 if (side != INVALID_DIAGDIR && side != ReverseDiagDir(dir)) return 0;
1866 return CombineTrackStatus(TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir)), TRACKDIR_BIT_NONE);
1867}
1868
1869static void ChangeTileOwner_TunnelBridge(TileIndex tile, Owner old_owner, Owner new_owner)
1870{
1871 TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
1872 /* Set number of pieces to zero if it's the southern tile as we
1873 * don't want to update the infrastructure counts twice. */
1874 uint num_pieces = tile < other_end ? (GetTunnelBridgeLength(tile, other_end) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR : 0;
1875
1876 TransportType tt = GetTunnelBridgeTransportType(tile);
1877
1878 if (tt == TRANSPORT_ROAD) {
1879 for (RoadTramType rtt : _roadtramtypes) {
1880 /* Update all roadtypes, no matter if they are present */
1881 if (GetRoadOwner(tile, rtt) == old_owner) {
1882 RoadType rt = GetRoadType(tile, rtt);
1883 if (rt != INVALID_ROADTYPE) {
1884 /* Update company infrastructure counts. A full diagonal road tile has two road bits.
1885 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1886 Company::Get(old_owner)->infrastructure.road[rt] -= num_pieces * 2;
1887 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += num_pieces * 2;
1888 }
1889
1890 SetRoadOwner(tile, rtt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
1891 }
1892 }
1893 }
1894
1895 if (!IsTileOwner(tile, old_owner)) return;
1896
1897 /* Update company infrastructure counts for rail and water as well.
1898 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1899 Company *old = Company::Get(old_owner);
1900 if (tt == TRANSPORT_RAIL) {
1901 old->infrastructure.rail[GetRailType(tile)] -= num_pieces;
1902 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.rail[GetRailType(tile)] += num_pieces;
1903 } else if (tt == TRANSPORT_WATER) {
1904 old->infrastructure.water -= num_pieces;
1905 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.water += num_pieces;
1906 }
1907
1908 if (new_owner != INVALID_OWNER) {
1909 SetTileOwner(tile, new_owner);
1910 } else {
1911 if (tt == TRANSPORT_RAIL) {
1912 /* Since all of our vehicles have been removed, it is safe to remove the rail
1913 * bridge / tunnel. */
1914 [[maybe_unused]] CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do({DoCommandFlag::Execute, DoCommandFlag::Bankrupt}, tile);
1915 assert(ret.Succeeded());
1916 } else {
1917 /* In any other case, we can safely reassign the ownership to OWNER_NONE. */
1918 SetTileOwner(tile, OWNER_NONE);
1919 }
1920 }
1921}
1922
1935template <typename T>
1936 static void PrepareToEnterBridge(T *gv)
1937{
1938 if (HasBit(gv->gv_flags, GVF_GOINGUP_BIT)) {
1939 gv->z_pos++;
1940 ClrBit(gv->gv_flags, GVF_GOINGUP_BIT);
1941 } else {
1942 ClrBit(gv->gv_flags, GVF_GOINGDOWN_BIT);
1943 }
1944}
1945
1951 static const uint8_t TUNNEL_SOUND_FRAME = 1;
1952
1961extern const uint8_t _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12};
1962
1963static VehicleEnterTileStates VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
1964{
1965 int z = GetSlopePixelZ(x, y, true) - v->z_pos;
1966
1967 if (abs(z) > 2) return VehicleEnterTileState::CannotEnter;
1968 /* Direction into the wormhole */
1969 const DiagDirection dir = GetTunnelBridgeDirection(tile);
1970 /* Direction of the vehicle */
1971 const DiagDirection vdir = DirToDiagDir(v->direction);
1972 /* New position of the vehicle on the tile */
1973 uint8_t pos = (DiagDirToAxis(vdir) == AXIS_X ? x : y) & TILE_UNIT_MASK;
1974 /* Number of units moved by the vehicle since entering the tile */
1975 uint8_t frame = (vdir == DIAGDIR_NE || vdir == DIAGDIR_NW) ? TILE_SIZE - 1 - pos : pos;
1976
1977 if (IsTunnel(tile)) {
1978 if (v->type == VEH_TRAIN) {
1979 Train *t = Train::From(v);
1980
1981 if (t->track != TRACK_BIT_WORMHOLE && dir == vdir) {
1982 if (t->IsFrontEngine() && frame == TUNNEL_SOUND_FRAME) {
1983 if (!PlayVehicleSound(t, VSE_TUNNEL) && RailVehInfo(t->engine_type)->engclass == 0) {
1984 SndPlayVehicleFx(SND_05_TRAIN_THROUGH_TUNNEL, v);
1985 }
1986 return {};
1987 }
1988 if (frame == _tunnel_visibility_frame[dir]) {
1989 t->tile = tile;
1990 t->track = TRACK_BIT_WORMHOLE;
1991 t->vehstatus.Set(VehState::Hidden);
1992 return VehicleEnterTileState::EnteredWormhole;
1993 }
1994 }
1995
1996 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
1997 /* We're at the tunnel exit ?? */
1998 t->tile = tile;
1999 t->track = DiagDirToDiagTrackBits(vdir);
2000 assert(t->track);
2001 t->vehstatus.Reset(VehState::Hidden);
2002 return VehicleEnterTileState::EnteredWormhole;
2003 }
2004 } else if (v->type == VEH_ROAD) {
2005 RoadVehicle *rv = RoadVehicle::From(v);
2006
2007 /* Enter tunnel? */
2008 if (rv->state != RVSB_WORMHOLE && dir == vdir) {
2009 if (frame == _tunnel_visibility_frame[dir]) {
2010 /* Frame should be equal to the next frame number in the RV's movement */
2011 assert(frame == rv->frame + 1);
2012 rv->tile = tile;
2013 rv->state = RVSB_WORMHOLE;
2014 rv->vehstatus.Set(VehState::Hidden);
2015 return VehicleEnterTileState::EnteredWormhole;
2016 } else {
2017 return {};
2018 }
2019 }
2020
2021 /* We're at the tunnel exit ?? */
2022 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
2023 rv->tile = tile;
2024 rv->state = DiagDirToDiagTrackdir(vdir);
2025 rv->frame = frame;
2026 rv->vehstatus.Reset(VehState::Hidden);
2027 return VehicleEnterTileState::EnteredWormhole;
2028 }
2029 }
2030 } else { // IsBridge(tile)
2031 if (v->type != VEH_SHIP) {
2032 /* modify speed of vehicle */
2033 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
2034
2035 if (v->type == VEH_ROAD) spd *= 2;
2036 Vehicle *first = v->First();
2037 first->cur_speed = std::min(first->cur_speed, spd);
2038 }
2039
2040 if (vdir == dir) {
2041 /* Vehicle enters bridge at the last frame inside this tile. */
2042 if (frame != TILE_SIZE - 1) return {};
2043 switch (v->type) {
2044 case VEH_TRAIN: {
2045 Train *t = Train::From(v);
2046 t->track = TRACK_BIT_WORMHOLE;
2047 PrepareToEnterBridge(t);
2048 break;
2049 }
2050
2051 case VEH_ROAD: {
2052 RoadVehicle *rv = RoadVehicle::From(v);
2053 rv->state = RVSB_WORMHOLE;
2054 PrepareToEnterBridge(rv);
2055 break;
2056 }
2057
2058 case VEH_SHIP:
2059 Ship::From(v)->state = TRACK_BIT_WORMHOLE;
2060 break;
2061
2062 default: NOT_REACHED();
2063 }
2064 return VehicleEnterTileState::EnteredWormhole;
2065 } else if (vdir == ReverseDiagDir(dir)) {
2066 v->tile = tile;
2067 switch (v->type) {
2068 case VEH_TRAIN: {
2069 Train *t = Train::From(v);
2070 if (t->track == TRACK_BIT_WORMHOLE) {
2071 t->track = DiagDirToDiagTrackBits(vdir);
2072 return VehicleEnterTileState::EnteredWormhole;
2073 }
2074 break;
2075 }
2076
2077 case VEH_ROAD: {
2078 RoadVehicle *rv = RoadVehicle::From(v);
2079 if (rv->state == RVSB_WORMHOLE) {
2080 rv->state = DiagDirToDiagTrackdir(vdir);
2081 rv->frame = 0;
2082 return VehicleEnterTileState::EnteredWormhole;
2083 }
2084 break;
2085 }
2086
2087 case VEH_SHIP: {
2088 Ship *ship = Ship::From(v);
2089 if (ship->state == TRACK_BIT_WORMHOLE) {
2090 ship->state = DiagDirToDiagTrackBits(vdir);
2091 return VehicleEnterTileState::EnteredWormhole;
2092 }
2093 break;
2094 }
2095
2096 default: NOT_REACHED();
2097 }
2098 }
2099 }
2100 return {};
2101}
2102
2103static CommandCost TerraformTile_TunnelBridge(TileIndex tile, DoCommandFlags flags, int z_new, Slope tileh_new)
2104{
2105 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && IsBridge(tile) && GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) {
2106 DiagDirection direction = GetTunnelBridgeDirection(tile);
2107 Axis axis = DiagDirToAxis(direction);
2108 CommandCost res;
2109 auto [tileh_old, z_old] = GetTileSlopeZ(tile);
2110
2111 /* Check if new slope is valid for bridges in general (so we can safely call GetBridgeFoundation()) */
2112 if ((direction == DIAGDIR_NW) || (direction == DIAGDIR_NE)) {
2113 CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, tileh_old, z_old);
2114 res = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, tileh_new, z_new);
2115 } else {
2116 CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, tileh_old, z_old);
2117 res = CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, tileh_new, z_new);
2118 }
2119
2120 /* Surface slope is valid and remains unchanged? */
2121 if (res.Succeeded() && (z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
2122 }
2123
2124 return Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
2125}
2126
2127static CommandCost CheckBuildAbove_TunnelBridge(TileIndex tile, DoCommandFlags flags, Axis axis, int height)
2128{
2129 if (IsTunnel(tile)) return CommandCost();
2130
2131 if (axis != DiagDirToAxis(GetTunnelBridgeDirection(tile)) && height > GetBridgeHeight(tile)) {
2132 return CommandCost();
2133 }
2134
2135 return Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
2136}
2137
2138extern const TileTypeProcs _tile_type_tunnelbridge_procs = {
2139 DrawTile_TunnelBridge, // draw_tile_proc
2140 GetSlopePixelZ_TunnelBridge, // get_slope_z_proc
2141 ClearTile_TunnelBridge, // clear_tile_proc
2142 nullptr, // add_accepted_cargo_proc
2143 GetTileDesc_TunnelBridge, // get_tile_desc_proc
2144 GetTileTrackStatus_TunnelBridge, // get_tile_track_status_proc
2145 nullptr, // click_tile_proc
2146 nullptr, // animate_tile_proc
2147 TileLoop_TunnelBridge, // tile_loop_proc
2148 ChangeTileOwner_TunnelBridge, // change_tile_owner_proc
2149 nullptr, // add_produced_cargo_proc
2150 VehicleEnter_TunnelBridge, // vehicle_enter_tile_proc
2151 GetFoundation_TunnelBridge, // get_foundation_proc
2152 TerraformTile_TunnelBridge, // terraform_tile_proc
2153 CheckBuildAbove_TunnelBridge, // check_build_above_proc
2154};
autoslope.h
Functions related to autoslope.
AutoslopeEnabled
bool AutoslopeEnabled()
Tests if autoslope is enabled for _current_company.
Definition autoslope.h:65
HasBit
constexpr bool HasBit(const T x, const uint8_t y)
Checks if a bit in a value is set.
Definition bitmath_func.hpp:103
ClrBit
constexpr T ClrBit(T &x, const uint8_t y)
Clears a bit in a variable.
Definition bitmath_func.hpp:139
GetBridgeSpec
const BridgeSpec * GetBridgeSpec(BridgeType i)
Get the specification of a bridge type.
Definition bridge.h:60
MAX_BRIDGES
static const uint MAX_BRIDGES
Maximal number of available bridge specs.
Definition bridge.h:18
bridge_land.h
This file contains all the sprites for bridges It consists of a number of arrays.
GetSouthernBridgeEnd
TileIndex GetSouthernBridgeEnd(TileIndex t)
Finds the southern end of a bridge starting at a middle tile.
Definition bridge_map.cpp:49
GetOtherBridgeEnd
TileIndex GetOtherBridgeEnd(TileIndex tile)
Starting at one bridge end finds the other bridge end.
Definition bridge_map.cpp:59
GetNorthernBridgeEnd
TileIndex GetNorthernBridgeEnd(TileIndex t)
Finds the northern end of a bridge starting at a middle tile.
Definition bridge_map.cpp:39
GetBridgeHeight
int GetBridgeHeight(TileIndex t)
Get the height ('z') of a bridge.
Definition bridge_map.cpp:70
SetBridgeMiddle
void SetBridgeMiddle(Tile t, Axis a)
Set that there is a bridge over the given axis.
Definition bridge_map.h:114
MakeAqueductBridgeRamp
void MakeAqueductBridgeRamp(Tile t, Owner o, DiagDirection d)
Make a bridge ramp for aqueducts.
Definition bridge_map.h:182
IsBridgeTile
bool IsBridgeTile(Tile t)
checks if there is a bridge on this tile
Definition bridge_map.h:35
MakeRailBridgeRamp
void MakeRailBridgeRamp(Tile t, Owner o, BridgeType bridgetype, DiagDirection d, RailType rt)
Make a bridge ramp for rails.
Definition bridge_map.h:170
GetBridgePixelHeight
int GetBridgePixelHeight(TileIndex tile)
Get the height ('z') of a bridge in pixels.
Definition bridge_map.h:84
ClearBridgeMiddle
void ClearBridgeMiddle(Tile t)
Removes bridges from the given, that is bridges along the X and Y axis.
Definition bridge_map.h:103
MakeRoadBridgeRamp
void MakeRoadBridgeRamp(Tile 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:154
GetBridgeType
BridgeType GetBridgeType(Tile t)
Determines the type of bridge on a tile.
Definition bridge_map.h:56
IsBridgeAbove
bool IsBridgeAbove(Tile t)
checks if a bridge is set above the ground of this tile
Definition bridge_map.h:45
GetBridgeAxis
Axis GetBridgeAxis(Tile t)
Get the axis of the bridge that goes over the tile.
Definition bridge_map.h:68
IsBridge
bool IsBridge(Tile t)
Checks if this is a bridge, instead of a tunnel.
Definition bridge_map.h:24
BridgePieces
BridgePieces
This enum is related to the definition of bridge pieces, which is used to determine the proper sprite...
Definition bridge_type.h:22
BridgeType
uint BridgeType
Bridge spec number.
Definition bridge_type.h:15
_cheats
Cheats _cheats
All the cheats.
Definition cheat.cpp:16
cheat_type.h
Types related to cheating.
BaseBitSet::Test
constexpr bool Test(Tvalue_type value) const
Test if the value-th bit is set.
Definition base_bitset_type.hpp:141
BaseBitSet::Reset
constexpr Timpl & Reset()
Reset all bits.
Definition base_bitset_type.hpp:83
BaseBitSet::Set
constexpr Timpl & Set()
Set all bits.
Definition base_bitset_type.hpp:40
CommandCost
Common return value for all commands.
Definition command_type.h:24
CommandCost::Succeeded
bool Succeeded() const
Did this command succeed?
Definition command_type.h:168
CommandCost::AddCost
void AddCost(const Money &cost)
Adds the given cost to the cost of the command.
Definition command_type.h:98
CommandCost::GetCost
Money GetCost() const
The costs as made up to this moment.
Definition command_type.h:118
CommandCost::Failed
bool Failed() const
Did this command fail?
Definition command_type.h:177
EnumBitSet
Enum-as-bit-set wrapper.
Definition enum_type.hpp:177
OverflowSafeInt< int64_t >
RailTypeInfo
This struct contains all the info that is needed to draw and construct tracks.
Definition rail.h:115
RailTypeInfo::single_x
SpriteID single_x
single piece of rail in X direction, without ground
Definition rail.h:125
RailTypeInfo::max_speed
uint16_t max_speed
Maximum speed for vehicles travelling on this rail type.
Definition rail.h:220
RailTypeInfo::bridge_deck
SpriteID bridge_deck
bridge deck sprites base
Definition rail.h:134
RailTypeInfo::single_y
SpriteID single_y
single piece of rail in Y direction, without ground
Definition rail.h:126
RailTypeInfo::name
StringID name
Name of this rail type.
Definition rail.h:165
RailTypeInfo::strings
struct RailTypeInfo::@22 strings
Strings associated with the rail type.
RailTypeInfo::bridge_offset
uint8_t bridge_offset
Bridge offset.
Definition rail.h:185
RailTypeInfo::base_sprites
struct RailTypeInfo::@19 base_sprites
Struct containing the main sprites.
RailTypeInfo::tunnel
SpriteID tunnel
tunnel sprites base
Definition rail.h:133
RailTypeInfo::single_sloped
SpriteID single_sloped
single piece of rail for slopes
Definition rail.h:131
RoadTypeInfo
Definition road.h:52
RoadTypeInfo::strings
struct RoadTypeInfo::@25 strings
Strings associated with the rail type.
RoadTypeInfo::max_speed
uint16_t max_speed
Maximum speed for vehicles travelling on this road type.
Definition road.h:116
RoadTypeInfo::name
StringID name
Name of this rail type.
Definition road.h:77
TimerGameCalendar::year
static Year year
Current year, starting at 0.
Definition timer_game_calendar.h:31
clear_func.h
Functions related to clear (MP_CLEAR) land.
CommandCostWithParam
CommandCost CommandCostWithParam(StringID str, uint64_t value)
Return an error status, with string and parameter.
Definition command.cpp:417
command_func.h
Functions related to commands.
CMD_ERROR
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition command_func.h:28
DoCommandFlag::Auto
@ Auto
don't allow building on structures
DoCommandFlag::QueryCost
@ QueryCost
query cost only, don't build.
DoCommandFlag::Execute
@ Execute
execute the given command
DoCommandFlag::Bankrupt
@ Bankrupt
company bankrupts, skip money check, skip vehicle on tile check in some cases
company_base.h
Definition of stuff that is very close to a company, like the company struct itself.
CheckTileOwnership
CommandCost CheckTileOwnership(TileIndex tile)
Check whether the current owner owns the stuff on the given tile.
Definition company_cmd.cpp:404
CheckOwnership
CommandCost CheckOwnership(Owner owner, TileIndex tile)
Check whether the current owner owns something.
Definition company_cmd.cpp:381
_local_company
CompanyID _local_company
Company controlled by the human player at this client. Can also be COMPANY_SPECTATOR.
Definition company_cmd.cpp:55
_current_company
CompanyID _current_company
Company currently doing an action.
Definition company_cmd.cpp:56
DirtyCompanyInfrastructureWindows
void DirtyCompanyInfrastructureWindows(CompanyID company)
Redraw all windows with company infrastructure counts.
Definition company_gui.cpp:2318
company_gui.h
GUI Functions related to companies.
OWNER_DEITY
static constexpr Owner OWNER_DEITY
The object is owned by a superuser / goal script.
Definition company_type.h:28
OWNER_TOWN
static constexpr Owner OWNER_TOWN
A town owns the tile, or a town is expanding.
Definition company_type.h:25
OWNER_NONE
static constexpr Owner OWNER_NONE
The tile has no ownership.
Definition company_type.h:26
INVALID_OWNER
static constexpr Owner INVALID_OWNER
An invalid owner.
Definition company_type.h:30
OWNER_WATER
static constexpr Owner OWNER_WATER
The tile/execution is done by "water".
Definition company_type.h:27
ReverseDiagDir
DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Definition direction_func.h:118
AxisToDiagDir
DiagDirection AxisToDiagDir(Axis a)
Converts an Axis to a DiagDirection.
Definition direction_func.h:232
OtherAxis
Axis OtherAxis(Axis a)
Select the other axis as provided.
Definition direction_func.h:197
DiagDirToAxis
Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
Definition direction_func.h:214
DirToDiagDir
DiagDirection DirToDiagDir(Direction dir)
Convert a Direction to a DiagDirection.
Definition direction_func.h:166
Axis
Axis
Allow incrementing of DiagDirDiff variables.
Definition direction_type.h:123
AXIS_X
@ AXIS_X
The X axis.
Definition direction_type.h:124
AXIS_Y
@ AXIS_Y
The y axis.
Definition direction_type.h:125
DiagDirection
DiagDirection
Enumeration for diagonal directions.
Definition direction_type.h:78
DIAGDIR_NE
@ DIAGDIR_NE
Northeast, upper right on your monitor.
Definition direction_type.h:80
DIAGDIR_NW
@ DIAGDIR_NW
Northwest.
Definition direction_type.h:83
DIAGDIR_SE
@ DIAGDIR_SE
Southeast.
Definition direction_type.h:81
DIAGDIR_END
@ DIAGDIR_END
Used for iterations.
Definition direction_type.h:84
INVALID_DIAGDIR
@ INVALID_DIAGDIR
Flag for an invalid DiagDirection.
Definition direction_type.h:85
DIAGDIR_SW
@ DIAGDIR_SW
Southwest.
Definition direction_type.h:82
EXPENSES_CONSTRUCTION
@ EXPENSES_CONSTRUCTION
Construction costs.
Definition economy_type.h:179
TUNNELBRIDGE_TRACKBIT_FACTOR
static const uint TUNNELBRIDGE_TRACKBIT_FACTOR
Multiplier for how many regular track bits a tunnel/bridge counts.
Definition economy_type.h:237
Price
Price
Enumeration of all base prices for use with Prices.
Definition economy_type.h:95
DrawRailCatenaryOnBridge
void DrawRailCatenaryOnBridge(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition elrail.cpp:490
DrawRailCatenaryOnTunnel
void DrawRailCatenaryOnTunnel(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition elrail.cpp:249
DrawRailCatenary
void DrawRailCatenary(const TileInfo *ti)
Draws overhead wires and pylons for electric railways.
Definition elrail.cpp:550
elrail_func.h
header file for electrified rail specific functions
HasRailCatenaryDrawn
bool HasRailCatenaryDrawn(RailType rt)
Test if we should draw rail catenary.
Definition elrail_func.h:30
to_underlying
constexpr std::underlying_type_t< enum_type > to_underlying(enum_type e)
Implementation of std::to_underlying (from C++23)
Definition enum_type.hpp:17
SpriteID
uint32_t 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:56
GVF_GOINGUP_BIT
@ GVF_GOINGUP_BIT
Vehicle is currently going uphill. (Cached track information for acceleration)
Definition ground_vehicle.hpp:55
GetSnowLine
uint8_t GetSnowLine()
Get the current snow line, either variable or static.
Definition landscape.cpp:606
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:2128
GetPartialPixelZ
uint GetPartialPixelZ(int x, int y, Slope corners)
Determines height at given coordinate of a slope.
Definition landscape.cpp:232
DrawFoundation
void DrawFoundation(TileInfo *ti, Foundation f)
Draw foundation f at tile ti.
Definition landscape.cpp:429
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:358
_tile_type_procs
const TileTypeProcs *const _tile_type_procs[16]
Tile callback functions for each type of tile.
Definition landscape.cpp:69
ApplyFoundationToSlope
uint ApplyFoundationToSlope(Foundation f, Slope &s)
Applies a foundation to a slope.
Definition landscape.cpp:174
GetSlopePixelZ
int GetSlopePixelZ(int x, int y, bool ground_vehicle)
Return world Z coordinate of a given point of a tile.
Definition landscape.cpp:307
ApplyPixelFoundationToSlope
uint ApplyPixelFoundationToSlope(Foundation f, Slope &s)
Applies a foundation to a slope.
Definition landscape.h:128
landscape_cmd.h
Command definitions related to landscape (slopes etc.).
DistanceSquare
uint DistanceSquare(TileIndex t0, TileIndex t1)
Gets the 'Square' distance between the two given tiles.
Definition map.cpp:186
TileDiffXY
TileIndexDiff TileDiffXY(int x, int y)
Calculates an offset for the given coordinate(-offset).
Definition map_func.h:401
TileOffsByAxis
TileIndexDiff TileOffsByAxis(Axis axis)
Convert an Axis to a TileIndexDiff.
Definition map_func.h:568
TileY
static uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition map_func.h:438
TileX
static uint TileX(TileIndex tile)
Get the X component of a tile.
Definition map_func.h:428
TileOffsByDiagDir
TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
Convert a DiagDirection to a TileIndexDiff.
Definition map_func.h:583
TileIndexDiff
int32_t TileIndexDiff
An offset value between two tiles.
Definition map_type.h:23
abs
constexpr T abs(const T a)
Returns the absolute value of (scalar) variable.
Definition math_func.hpp:23
TCX_ON_BRIDGE
@ TCX_ON_BRIDGE
Querying information about stuff on the bridge (via some bridgehead).
Definition newgrf_commons.h:27
TCX_NORMAL
@ TCX_NORMAL
Nothing special.
Definition newgrf_commons.h:25
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:106
newgrf_railtype.h
NewGRF handling of rail types.
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:149
newgrf_roadtype.h
NewGRF handling of road types.
PlayVehicleSound
bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event, bool force)
Checks whether a NewGRF wants to play a different vehicle sound effect.
Definition newgrf_sound.cpp:143
newgrf_sound.h
Functions related to NewGRF provided sounds.
VSE_TUNNEL
@ VSE_TUNNEL
Train entering a tunnel.
Definition newgrf_sound.h:20
object_base.h
Base for all objects.
FindClearedObject
ClearedObjectArea * FindClearedObject(TileIndex tile)
Find the entry in _cleared_object_areas which occupies a certain tile.
Definition object_cmd.cpp:531
GetTrainForReservation
Train * GetTrainForReservation(TileIndex tile, Track track)
Find the train which has reserved a specific path.
Definition pbs.cpp:331
pbs.h
PBS support routines.
ValParamRailType
bool ValParamRailType(const RailType rail)
Validate functions for rail building.
Definition rail.cpp:90
RTBO_Y
@ RTBO_Y
Piece of rail in Y direction.
Definition rail.h:85
RTBO_X
@ RTBO_X
Piece of rail in X direction.
Definition rail.h:84
RTBO_SLOPE
@ RTBO_SLOPE
Sloped rail pieces, in order NE, SE, SW, NW.
Definition rail.h:86
RailClearCost
Money RailClearCost(RailType railtype)
Returns the 'cost' of clearing the specified railtype.
Definition rail.h:439
RailBuildCost
Money RailBuildCost(RailType railtype)
Returns the cost of building the specified railtype.
Definition rail.h:428
GetRailTypeInfo
const RailTypeInfo * GetRailTypeInfo(RailType railtype)
Returns a pointer to the Railtype information for a given railtype.
Definition rail.h:300
RTSG_TUNNEL
@ RTSG_TUNNEL
Main group of ground images for snow or desert.
Definition rail.h:44
RTSG_OVERLAY
@ RTSG_OVERLAY
Images for overlaying track.
Definition rail.h:42
RTSG_BRIDGE
@ RTSG_BRIDGE
Bridge surface images.
Definition rail.h:47
RTSG_TUNNEL_PORTAL
@ RTSG_TUNNEL_PORTAL
Tunnel portal overlay.
Definition rail.h:51
RTO_SLOPE_NE
@ RTO_SLOPE_NE
Piece of rail on slope with north-east raised.
Definition rail.h:68
RTO_X
@ RTO_X
Piece of rail in X direction.
Definition rail.h:62
GetRailType
RailType GetRailType(Tile t)
Gets the rail type of the given tile.
Definition rail_map.h:115
RailType
RailType
Enumeration for all possible railtypes.
Definition rail_type.h:25
INVALID_RAILTYPE
@ INVALID_RAILTYPE
Flag for invalid railtype.
Definition rail_type.h:32
ValParamRoadType
bool ValParamRoadType(RoadType roadtype)
Validate functions for rail building.
Definition road.cpp:164
RoadClearCost
Money RoadClearCost(RoadType roadtype)
Returns the cost of clearing the specified roadtype.
Definition road.h:251
GetRoadTypeInfo
const RoadTypeInfo * GetRoadTypeInfo(RoadType roadtype)
Returns a pointer to the Roadtype information for a given roadtype.
Definition road.h:215
ROTSG_OVERLAY
@ ROTSG_OVERLAY
Optional: Images for overlaying track.
Definition road.h:38
ROTSG_CATENARY_BACK
@ ROTSG_CATENARY_BACK
Optional: Catenary back.
Definition road.h:42
ROTSG_BRIDGE
@ ROTSG_BRIDGE
Required: Bridge surface images.
Definition road.h:43
ROTSG_CATENARY_FRONT
@ ROTSG_CATENARY_FRONT
Optional: Catenary front.
Definition road.h:41
ROTSG_TUNNEL
@ ROTSG_TUNNEL
Optional: Ground images for tunnels.
Definition road.h:40
RoadBuildCost
Money RoadBuildCost(RoadType roadtype)
Returns the cost of building the specified roadtype.
Definition road.h:240
UpdateCompanyRoadInfrastructure
void UpdateCompanyRoadInfrastructure(RoadType rt, Owner o, int count)
Update road infrastructure counts for a company.
Definition road_cmd.cpp:180
DrawRoadOverlays
void DrawRoadOverlays(const TileInfo *ti, PaletteID pal, const RoadTypeInfo *road_rti, const RoadTypeInfo *tram_rti, uint road_offset, uint tram_offset, bool draw_underlay)
Draw road underlay and overlay sprites.
Definition road_cmd.cpp:1505
HasRoadCatenaryDrawn
bool HasRoadCatenaryDrawn(RoadType roadtype)
Test if we should draw road catenary.
Definition road_func.h:145
SetRoadOwner
void SetRoadOwner(Tile t, RoadTramType rtt, Owner o)
Set the owner of a specific road type.
Definition road_map.h:235
HasTileRoadType
bool HasTileRoadType(Tile t, RoadTramType rtt)
Check if a tile has a road or a tram road type.
Definition road_map.h:195
GetRoadside
Roadside GetRoadside(Tile tile)
Get the decorations of a road.
Definition road_map.h:473
IsNormalRoadTile
static bool IsNormalRoadTile(Tile t)
Return whether a tile is a normal road tile.
Definition road_map.h:58
GetRoadOwner
Owner GetRoadOwner(Tile t, RoadTramType rtt)
Get the owner of a specific road type.
Definition road_map.h:218
SetRoadside
void SetRoadside(Tile tile, Roadside s)
Set the decorations of a road.
Definition road_map.h:483
Roadside::Paved
@ Paved
Road with paved sidewalks.
Roadside::Trees
@ Trees
Road with trees on paved sidewalks.
RoadTramType
RoadTramType
The different types of road type.
Definition road_type.h:37
RTT_ROAD
@ RTT_ROAD
Road road type.
Definition road_type.h:38
RTT_TRAM
@ RTT_TRAM
Tram road type.
Definition road_type.h:39
RoadType
RoadType
The different roadtypes we support.
Definition road_type.h:23
INVALID_ROADTYPE
@ INVALID_ROADTYPE
flag for invalid roadtype
Definition road_type.h:28
roadveh.h
Road vehicle states.
RVSB_WORMHOLE
@ RVSB_WORMHOLE
The vehicle is in a tunnel and/or bridge.
Definition roadveh.h:39
safeguards.h
A number of safeguards to prevent using unsafe methods.
_settings_game
GameSettings _settings_game
Game settings of a running game or the scenario editor.
Definition settings.cpp:61
_settings_client
ClientSettings _settings_client
The current settings for this game.
Definition settings.cpp:60
ship.h
Base for ships.
AddSideToSignalBuffer
void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner)
Add side of tile to signal update buffer.
Definition signal.cpp:621
SlopeToSpriteOffset
uint SlopeToSpriteOffset(Slope s)
Returns the Sprite offset for a given Slope.
Definition slope_func.h:415
HasSlopeHighestCorner
bool HasSlopeHighestCorner(Slope s)
Tests if a slope has a highest corner (i.e.
Definition slope_func.h:113
FlatteningFoundation
Foundation FlatteningFoundation(Slope s)
Returns the foundation needed to flatten a slope.
Definition slope_func.h:369
GetInclinedSlopeDirection
DiagDirection GetInclinedSlopeDirection(Slope s)
Returns the direction of an inclined slope.
Definition slope_func.h:239
InclinedFoundation
Foundation InclinedFoundation(Axis axis)
Returns the along a specific axis inclined foundation.
Definition slope_func.h:380
ComplementSlope
Slope ComplementSlope(Slope s)
Return the complement of a slope.
Definition slope_func.h:76
Slope
Slope
Enumeration for the slope-type.
Definition slope_type.h:48
SLOPE_SW
@ SLOPE_SW
south and west corner are raised
Definition slope_type.h:56
SLOPE_FLAT
@ SLOPE_FLAT
a flat tile
Definition slope_type.h:49
SLOPE_NE
@ SLOPE_NE
north and east corner are raised
Definition slope_type.h:58
SLOPE_SE
@ SLOPE_SE
south and east corner are raised
Definition slope_type.h:57
SLOPE_NW
@ SLOPE_NW
north and west corner are raised
Definition slope_type.h:55
Foundation
Foundation
Enumeration for Foundations.
Definition slope_type.h:93
FOUNDATION_NONE
@ FOUNDATION_NONE
The tile has no foundation, the slope remains unchanged.
Definition slope_type.h:94
sound_func.h
Functions related to sound.
SND_05_TRAIN_THROUGH_TUNNEL
@ SND_05_TRAIN_THROUGH_TUNNEL
3 == 0x03 Train enters tunnel: steam engine
Definition sound_type.h:50
SPRITE_MASK
static constexpr uint32_t SPRITE_MASK
The mask to for the main sprite.
Definition sprites.h:1570
PALETTE_CRASH
static const PaletteID PALETTE_CRASH
Recolour sprite greying of crashed vehicles.
Definition sprites.h:1619
SPR_RAILTYPE_TUNNEL_BASE
static const SpriteID SPR_RAILTYPE_TUNNEL_BASE
Tunnel sprites with grass only for custom railtype tunnel.
Definition sprites.h:301
SPR_TRAMWAY_BASE
static const SpriteID SPR_TRAMWAY_BASE
Tramway sprites.
Definition sprites.h:274
stdafx.h
Definition of base types and functions in a cross-platform compatible way.
lengthof
#define lengthof(array)
Return the length of an fixed size array.
Definition stdafx.h:271
strings_func.h
Functions related to OTTD's strings.
BaseVehicle::type
VehicleType type
Type of vehicle.
Definition vehicle_type.h:51
BridgeSpec
Struct containing information about a single bridge type.
Definition bridge.h:27
BridgeSpec::ctrl_flags
ControlFlags ctrl_flags
control flags
Definition bridge.h:46
BridgeSpec::ControlFlag::InvalidPillarFlags
@ InvalidPillarFlags
Bridge pillar flags are not valid, i.e. only the tile layout has been modified.
BridgeSpec::min_length
uint8_t min_length
the minimum length (not counting start and end tile)
Definition bridge.h:36
BridgeSpec::pillar_flags
BridgeMiddlePillarFlags pillar_flags
bridge pillar flags.
Definition bridge.h:47
BridgeSpec::sprite_table
std::vector< std::vector< PalSpriteID > > sprite_table
table of sprites for drawing the bridge
Definition bridge.h:44
BridgeSpec::avail_year
TimerGameCalendar::Year avail_year
the year where it becomes available
Definition bridge.h:35
BridgeSpec::speed
uint16_t speed
maximum travel speed (1 unit = 1/1.6 mph = 1 km-ish/h)
Definition bridge.h:39
BridgeSpec::max_length
uint16_t max_length
the maximum length (not counting start and end tile)
Definition bridge.h:37
Cheat::value
bool value
tells if the bool cheat is active or not
Definition cheat_type.h:18
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
ClearedObjectArea
Keeps track of removed objects during execution/testruns of commands.
Definition object_base.h:86
ClearedObjectArea::first_tile
TileIndex first_tile
The first tile being cleared, which then causes the whole object to be cleared.
Definition object_base.h:87
ClientSettings::gui
GUISettings gui
settings related to the GUI
Definition settings_type.h:650
CommandHelper
Definition command_func.h:84
CompanyInfrastructure::road
std::array< uint32_t, ROADTYPE_END > road
Count of company owned track bits for each road type.
Definition company_base.h:34
CompanyInfrastructure::rail
std::array< uint32_t, RAILTYPE_END > rail
Count of company owned track bits for each rail type.
Definition company_base.h:33
CompanyInfrastructure::water
uint32_t water
Count of company owned track bits for canals.
Definition company_base.h:36
CompanyProperties::is_ai
bool is_ai
If true, the company is (also) controlled by the computer (a NoAI program).
Definition company_base.h:114
Company
Definition company_base.h:127
Company::infrastructure
CompanyInfrastructure infrastructure
NOSAVE: Counts of company owned infrastructure.
Definition company_base.h:141
ConstructionSettings::max_bridge_height
uint8_t max_bridge_height
maximum height of bridges
Definition settings_type.h:414
ConstructionSettings::build_on_slopes
bool build_on_slopes
allow building on slopes
Definition settings_type.h:411
ConstructionSettings::extra_dynamite
bool extra_dynamite
extra dynamite
Definition settings_type.h:417
ConstructionSettings::max_bridge_length
uint16_t max_bridge_length
maximum length of bridges
Definition settings_type.h:413
ConstructionSettings::max_tunnel_length
uint16_t max_tunnel_length
maximum length of tunnels
Definition settings_type.h:415
Coord3D::x
T x
X coordinate.
Definition geometry_type.hpp:44
Coord3D::y
T y
Y coordinate.
Definition geometry_type.hpp:45
Coord3D::z
T z
Z coordinate.
Definition geometry_type.hpp:46
GUISettings::show_track_reservation
bool show_track_reservation
highlight reserved tracks.
Definition settings_type.h:220
GameCreationSettings::landscape
LandscapeType landscape
the landscape we're currently in
Definition settings_type.h:395
GameSettings::construction
ConstructionSettings construction
construction of things in-game
Definition settings_type.h:635
GameSettings::game_creation
GameCreationSettings game_creation
settings used during the creation of a game (map)
Definition settings_type.h:634
Map::MaxX
static uint MaxX()
Gets the maximum X coordinate within the map, including MP_VOID.
Definition map_func.h:299
PalSpriteID
Combination of a palette sprite and a 'real' sprite.
Definition gfx_type.h:22
PalSpriteID::sprite
SpriteID sprite
The 'real' sprite.
Definition gfx_type.h:23
PalSpriteID::pal
PaletteID pal
The palette (use PAL_NONE) if not needed)
Definition gfx_type.h:24
PoolID< uint8_t, struct CompanyIDTag, 0xF, 0xFF >
Pool::PoolItem<&_company_pool >::Get
static Titem * Get(auto index)
Returns Titem with given index.
Definition pool_type.hpp:387
Pool::PoolItem::index
Tindex index
Index of this pool item.
Definition pool_type.hpp:286
Pool::PoolItem<&_company_pool >::IsValidID
static bool IsValidID(auto index)
Tests whether given index can be used to get valid (non-nullptr) Titem.
Definition pool_type.hpp:376
Pool::PoolItem<&_company_pool >::GetIfValid
static Titem * GetIfValid(auto index)
Returns Titem with given index.
Definition pool_type.hpp:398
RailVehicleInfo::engclass
EngineClass engclass
Class of engine for this vehicle.
Definition engine_type.h:86
RoadVehicle
Buses, trucks and trams belong to this class.
Definition roadveh.h:98
RoadVehicle::state
uint8_t state
Definition roadveh.h:100
Ship
All ships have this type.
Definition ship.h:32
Ship::state
TrackBits state
The "track" the ship is following.
Definition ship.h:34
SpecializedVehicle::From
static T * From(Vehicle *v)
Converts a Vehicle to SpecializedVehicle with type checking.
Definition vehicle_base.h:1134
SpriteBounds
Definition sprite.h:18
StrongType::Typedef< uint32_t, struct TileIndexTag, StrongType::Compare, StrongType::Integer, StrongType::Compatible< int32_t >, StrongType::Compatible< int64_t > >
SubSprite
Used to only draw a part of the sprite.
Definition gfx_type.h:278
TileDesc
Tile description for the 'land area information' tool.
Definition tile_cmd.h:36
TileDesc::rail_speed
uint16_t rail_speed
Speed limit of rail (bridges and track)
Definition tile_cmd.h:49
TileDesc::str
StringID str
Description of the tile.
Definition tile_cmd.h:37
TileDesc::owner
std::array< Owner, 4 > owner
Name of the owner(s)
Definition tile_cmd.h:39
TileDesc::tram_speed
uint16_t tram_speed
Speed limit of tram (bridges and track)
Definition tile_cmd.h:53
TileDesc::roadtype
StringID roadtype
Type of road on the tile.
Definition tile_cmd.h:50
TileDesc::tramtype
StringID tramtype
Type of tram on the tile.
Definition tile_cmd.h:52
TileDesc::railtype
StringID railtype
Type of rail on the tile.
Definition tile_cmd.h:48
TileDesc::road_speed
uint16_t road_speed
Speed limit of road (bridges and track)
Definition tile_cmd.h:51
TileDesc::owner_type
std::array< StringID, 4 > owner_type
Type of each owner.
Definition tile_cmd.h:40
TileInfo
Tile information, used while rendering the tile.
Definition tile_cmd.h:30
TileInfo::tileh
Slope tileh
Slope of the tile.
Definition tile_cmd.h:31
TileInfo::tile
TileIndex tile
Tile index.
Definition tile_cmd.h:32
TileTypeProcs
Set of callback functions for performing tile operations of a given tile type.
Definition tile_cmd.h:152
TownCache::squared_town_zone_radius
std::array< uint32_t, NUM_HOUSE_ZONES > squared_town_zone_radius
UpdateTownRadius updates this given the house count.
Definition town.h:56
Town
Town data structure.
Definition town.h:63
Town::xy
TileIndex xy
town center tile
Definition town.h:64
Town::cache
TownCache cache
Container for all cacheable data.
Definition town.h:66
Train
'Train' is either a loco or a wagon.
Definition train.h:91
Vehicle
Vehicle data structure.
Definition vehicle_base.h:205
Vehicle::engine_type
EngineID engine_type
The type of engine used for this vehicle.
Definition vehicle_base.h:278
Vehicle::z_pos
int32_t z_pos
z coordinate.
Definition vehicle_base.h:267
Vehicle::direction
Direction direction
facing
Definition vehicle_base.h:268
Vehicle::vehstatus
VehStates vehstatus
Status.
Definition vehicle_base.h:309
Vehicle::First
Vehicle * First() const
Get the first vehicle of this vehicle chain.
Definition vehicle_base.h:600
Vehicle::cur_speed
uint16_t cur_speed
current speed
Definition vehicle_base.h:283
Vehicle::IsFrontEngine
bool IsFrontEngine() const
Check if the vehicle is a front engine.
Definition vehicle_base.h:913
Vehicle::tile
TileIndex tile
Current tile index.
Definition vehicle_base.h:225
terraform_cmd.h
Command definitions related to terraforming.
VehicleEnterTileState::CannotEnter
@ CannotEnter
The vehicle cannot enter the tile.
VehicleEnterTileState::EnteredWormhole
@ EnteredWormhole
The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/...
GetTileSlopeZ
std::tuple< Slope, int > GetTileSlopeZ(TileIndex tile)
Return the slope of a given tile inside the map.
Definition tile_map.cpp:55
GetTileMaxZ
int GetTileMaxZ(TileIndex t)
Get top height of the tile inside the map.
Definition tile_map.cpp:136
GetTileZ
int GetTileZ(TileIndex tile)
Get bottom height of the tile.
Definition tile_map.cpp:116
TileHeight
static uint TileHeight(Tile tile)
Returns the height of a tile.
Definition tile_map.h:29
IsTileOwner
bool IsTileOwner(Tile tile, Owner owner)
Checks if a tile belongs to the given owner.
Definition tile_map.h:214
GetTileOwner
Owner GetTileOwner(Tile tile)
Returns the owner of a tile.
Definition tile_map.h:178
SetTileOwner
void SetTileOwner(Tile tile, Owner owner)
Sets the owner of a tile.
Definition tile_map.h:198
GetTilePixelSlope
std::tuple< Slope, int > GetTilePixelSlope(TileIndex tile)
Return the slope of a given tile.
Definition tile_map.h:289
IsValidTile
bool IsValidTile(Tile tile)
Checks if a tile is valid.
Definition tile_map.h:161
GetTropicZone
TropicZone GetTropicZone(Tile tile)
Get the tropic zone.
Definition tile_map.h:238
GetTileType
static TileType GetTileType(Tile tile)
Get the tiletype of a given tile.
Definition tile_map.h:96
TILE_UNIT_MASK
static constexpr uint TILE_UNIT_MASK
For masking in/out the inner-tile world coordinate units.
Definition tile_type.h:16
TROPICZONE_DESERT
@ TROPICZONE_DESERT
Tile is desert.
Definition tile_type.h:78
INVALID_TILE
constexpr TileIndex INVALID_TILE
The very nice invalid tile marker.
Definition tile_type.h:95
TILE_SIZE
static constexpr uint TILE_SIZE
Tile size in world coordinates.
Definition tile_type.h:15
TILE_HEIGHT
static constexpr uint TILE_HEIGHT
Height of a height level in world coordinate AND in pixels in ZOOM_BASE.
Definition tile_type.h:18
TileArea
OrthogonalTileArea TileArea
Shorthand for the much more common orthogonal tile area.
Definition tilearea_type.h:102
timer_game_calendar.h
Definition of the game-calendar-timer.
town.h
Base of the town class.
ChangeTownRating
void ChangeTownRating(Town *t, int add, int max, DoCommandFlags flags)
Changes town rating of the current company.
Definition town_cmd.cpp:4040
TownRatingCheckType::TunnelBridgeRemove
@ TunnelBridgeRemove
Removal of a tunnel or bridge owned by the town.
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:3961
CalcClosestTownFromTile
Town * CalcClosestTownFromTile(TileIndex tile, uint threshold=UINT_MAX)
Return the town closest to the given tile within threshold.
Definition town_cmd.cpp:3943
CheckforTownRating
CommandCost CheckforTownRating(DoCommandFlags flags, Town *t, TownRatingCheckType type)
Does the town authority allow the (destructive) action of the current company?
Definition town_cmd.cpp:4077
RATING_TUNNEL_BRIDGE_UP_STEP
static constexpr int RATING_TUNNEL_BRIDGE_UP_STEP
rating increase for improving a town-owned bridge
Definition town_type.h:58
RATING_TUNNEL_BRIDGE_MINIMUM
static constexpr int RATING_TUNNEL_BRIDGE_MINIMUM
minimum rating after removing tunnel or bridge
Definition town_type.h:60
RATING_TUNNEL_BRIDGE_DOWN_STEP
static constexpr int RATING_TUNNEL_BRIDGE_DOWN_STEP
penalty for removing town owned tunnel or bridge
Definition town_type.h:59
TrackBitsToTrackdirBits
TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
Converts TrackBits to TrackdirBits while allowing both directions.
Definition track_func.h:319
CombineTrackStatus
TrackStatus CombineTrackStatus(TrackdirBits trackdirbits, TrackdirBits red_signals)
Builds a TrackStatus.
Definition track_func.h:388
DiagDirToDiagTrackBits
TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track bits incidating with that diagdir.
Definition track_func.h:524
DiagDirToDiagTrackdir
Trackdir DiagDirToDiagTrackdir(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal trackdir that runs in that direction.
Definition track_func.h:537
AxisToTrack
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:66
DiagDirToDiagTrack
Track DiagDirToDiagTrack(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track incidating with that diagdir.
Definition track_func.h:512
TRACK_BIT_WORMHOLE
@ TRACK_BIT_WORMHOLE
Bitflag for a wormhole (used for tunnels)
Definition track_type.h:52
TRACKDIR_BIT_NONE
@ TRACKDIR_BIT_NONE
No track build.
Definition track_type.h:98
Track
Track
These are used to specify a single track.
Definition track_type.h:19
train.h
Base for the train class.
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:2899
FreeTrainTrackReservation
void FreeTrainTrackReservation(const Train *v)
Free the reserved path in front of a vehicle.
Definition train_cmd.cpp:2419
IsTransparencySet
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:50
IsInvisibilitySet
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:61
TO_BRIDGES
@ TO_BRIDGES
bridges
Definition transparency.h:29
TO_CATENARY
@ TO_CATENARY
catenary
Definition transparency.h:31
TransportType
TransportType
Available types of transport.
Definition transport_type.h:17
TRANSPORT_RAIL
@ TRANSPORT_RAIL
Transport by train.
Definition transport_type.h:25
TRANSPORT_ROAD
@ TRANSPORT_ROAD
Transport by road vehicle.
Definition transport_type.h:26
TRANSPORT_WATER
@ TRANSPORT_WATER
Transport over water.
Definition transport_type.h:27
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
GetOtherTunnelEnd
TileIndex GetOtherTunnelEnd(TileIndex tile)
Gets the other end of the tunnel.
Definition tunnel_map.cpp:22
MakeRailTunnel
void MakeRailTunnel(Tile t, Owner o, DiagDirection d, RailType r)
Makes a rail tunnel entrance.
Definition tunnel_map.h:73
IsTunnel
bool IsTunnel(Tile t)
Is this a tunnel (entrance)?
Definition tunnel_map.h:23
MakeRoadTunnel
void MakeRoadTunnel(Tile t, Owner o, DiagDirection d, RoadType road_rt, RoadType tram_rt)
Makes a road tunnel entrance.
Definition tunnel_map.h:50
tunnelbridge.h
Header file for things common for tunnels and bridges.
GetTunnelBridgeLength
uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
Calculates the length of a tunnel or a bridge (without end tiles)
Definition tunnelbridge.h:25
CmdBuildBridge
CommandCost CmdBuildBridge(DoCommandFlags flags, TileIndex tile_end, TileIndex tile_start, TransportType transport_type, BridgeType bridge_type, uint8_t road_rail_type)
Build a Bridge.
Definition tunnelbridge_cmd.cpp:310
ClearTile_TunnelBridge
static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlags flags)
Remove a tunnel or a bridge from the game.
Definition tunnelbridge_cmd.cpp:1040
CmdBuildTunnel
CommandCost CmdBuildTunnel(DoCommandFlags flags, TileIndex start_tile, TransportType transport_type, uint8_t road_rail_type)
Build Tunnel.
Definition tunnelbridge_cmd.cpp:647
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:1098
CalcBridgePiece
static BridgePieces CalcBridgePiece(uint north, uint south)
Compute bridge piece.
Definition tunnelbridge_cmd.cpp:1570
BridgeHasCustomSpriteTable
static bool BridgeHasCustomSpriteTable(BridgeType bridge_type, BridgePieces piece)
Test if bridge piece uses a custom sprite table.
Definition tunnelbridge_cmd.cpp:144
CheckAllowRemoveTunnelBridge
static CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
Are we allowed to remove the tunnel or bridge at tile?
Definition tunnelbridge_cmd.cpp:821
TunnelBridgeClearCost
static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
Calculate the base cost of clearing a tunnel/bridge per tile.
Definition tunnelbridge_cmd.cpp:264
GetBridgeFoundation
Foundation GetBridgeFoundation(Slope tileh, Axis axis)
Get the foundation for a bridge.
Definition tunnelbridge_cmd.cpp:115
_tunnel_visibility_frame
const uint8_t _tunnel_visibility_frame[DIAGDIR_END]
Frame when a vehicle should be hidden in a tunnel with a certain direction.
DoClearTunnel
static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlags flags)
Remove a tunnel from the game, update town rating, etc.
Definition tunnelbridge_cmd.cpp:869
DoClearBridge
static CommandCost DoClearBridge(TileIndex tile, DoCommandFlags flags)
Remove a bridge from the game, update town rating, etc.
Definition tunnelbridge_cmd.cpp:949
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:1078
GetBridgeTilePillarFlags
static BridgePillarFlags GetBridgeTilePillarFlags(TileIndex tile, TileIndex rampnorth, TileIndex rampsouth, BridgeType type, TransportType transport_type)
Get pillar information for a bridge middle tile.
Definition tunnelbridge_cmd.cpp:1594
DrawPillar
static void DrawPillar(const PalSpriteID &psid, int x, int y, int z, uint8_t w, uint8_t h, const SubSprite *subsprite)
Draw a single pillar sprite.
Definition tunnelbridge_cmd.cpp:1061
GetBridgeRampDirectionBaseOffset
static uint8_t GetBridgeRampDirectionBaseOffset(DiagDirection diagdir)
Get bridge sprite table base offset for the ramp part of bridge.
Definition tunnelbridge_cmd.cpp:187
CheckBridgeAvailability
CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlags flags)
Is a bridge of the specified type and length available?
Definition tunnelbridge_cmd.cpp:240
MarkBridgeDirty
void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
Mark bridge tiles dirty.
Definition tunnelbridge_cmd.cpp:64
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:131
DrawTile_TunnelBridge
static void DrawTile_TunnelBridge(TileInfo *ti)
Draws a tunnel of bridge tile.
Definition tunnelbridge_cmd.cpp:1292
DrawBridgeMiddle
void DrawBridgeMiddle(const TileInfo *ti, BridgePillarFlags blocked_pillars)
Draw the middle bits of a bridge.
Definition tunnelbridge_cmd.cpp:1614
GetBridgeSpriteTable
static std::span< const PalSpriteID > GetBridgeSpriteTable(BridgeType bridge_type, BridgePieces piece)
Get the sprite table for a rail/road bridge piece.
Definition tunnelbridge_cmd.cpp:157
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
GetBridgeMiddleAxisBaseOffset
static uint8_t GetBridgeMiddleAxisBaseOffset(Axis axis)
Get bridge sprite table base offset for the middle part of bridge.
Definition tunnelbridge_cmd.cpp:199
_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
_bridge
BridgeSpec _bridge[MAX_BRIDGES]
The specification of all bridges.
Definition tunnelbridge_cmd.cpp:49
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:1154
CalcBridgeLenCostFactor
int CalcBridgeLenCostFactor(int length)
Calculate the price factor for building a long bridge.
Definition tunnelbridge_cmd.cpp:94
PrepareToEnterBridge
static void PrepareToEnterBridge(T *gv)
Helper to prepare the ground vehicle when entering a bridge.
Definition tunnelbridge_cmd.cpp:1936
GetBridgeSpriteTableBaseOffset
static uint8_t GetBridgeSpriteTableBaseOffset(TransportType transport_type, TileIndex ramp)
Get the sprite table transport type base offset for a rail/road bridge.
Definition tunnelbridge_cmd.cpp:173
ResetBridges
void ResetBridges()
Reset the data been eventually changed by the grf loaded.
Definition tunnelbridge_cmd.cpp:83
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:213
DrawBridgeRoadBits
static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head, bool is_custom_layout)
Draws the road and trambits over an already drawn (lower end) of a bridge.
Definition tunnelbridge_cmd.cpp:1181
TUNNEL_SOUND_FRAME
static const uint8_t TUNNEL_SOUND_FRAME
Frame when the 'enter tunnel' sound should be played.
Definition tunnelbridge_cmd.cpp:1951
tunnelbridge_cmd.h
Command definitions related to tunnels and bridges.
tunnelbridge_map.h
Functions that have tunnels and bridges in common.
SetTunnelBridgeSnowOrDesert
void SetTunnelBridgeSnowOrDesert(Tile 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
GetTunnelBridgeDirection
DiagDirection GetTunnelBridgeDirection(Tile t)
Get the direction pointing to the other end.
Definition tunnelbridge_map.h:26
HasTunnelBridgeSnowOrDesert
bool HasTunnelBridgeSnowOrDesert(Tile 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
HasTunnelBridgeReservation
bool HasTunnelBridgeReservation(Tile t)
Get the reservation state of the rail tunnel/bridge.
Definition tunnelbridge_map.h:91
GetTunnelBridgeTransportType
TransportType GetTunnelBridgeTransportType(Tile 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
GetOtherTunnelBridgeEnd
TileIndex GetOtherTunnelBridgeEnd(Tile t)
Determines type of the wormhole and returns its other end.
Definition tunnelbridge_map.h:78
SetTunnelBridgeReservation
void SetTunnelBridgeReservation(Tile t, bool b)
Set the reservation state of the rail tunnel/bridge.
Definition tunnelbridge_map.h:104
TunnelBridgeIsFree
CommandCost TunnelBridgeIsFree(TileIndex tile, TileIndex endtile, const Vehicle *ignore)
Finds vehicle in tunnel / bridge.
Definition vehicle.cpp:551
VehState::Hidden
@ Hidden
Vehicle is not visible.
vehicle_func.h
Functions related to vehicles.
VEH_ROAD
@ VEH_ROAD
Road vehicle type.
Definition vehicle_type.h:26
VEH_SHIP
@ VEH_SHIP
Ship vehicle type.
Definition vehicle_type.h:27
VEH_TRAIN
@ VEH_TRAIN
Train vehicle type.
Definition vehicle_type.h:25
StartSpriteCombine
void StartSpriteCombine()
Starts a block of sprites, which are "combined" into a single bounding box.
Definition viewport.cpp:764
AddSortableSpriteToDraw
void AddSortableSpriteToDraw(SpriteID image, PaletteID pal, int x, int y, int z, const SpriteBounds &bounds, bool transparent, const SubSprite *sub)
Draw a (transparent) sprite at given coordinates with a given bounding box.
Definition viewport.cpp:663
EndSpriteCombine
void EndSpriteCombine()
Terminates a block of sprites started by StartSpriteCombine.
Definition viewport.cpp:774
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:579
viewport_func.h
Functions related to (drawing on) viewports.
BB_Z_SEPARATOR
static constexpr int BB_Z_SEPARATOR
Separates the bridge/tunnel from the things under/above it.
Definition viewport_type.h:93
water.h
Functions related to water (management)
CheckForDockingTile
void CheckForDockingTile(TileIndex t)
Mark the supplied tile as a docking tile if it is suitable for docking.
Definition water_cmd.cpp:194
HasTileWaterGround
bool HasTileWaterGround(Tile t)
Checks whether the tile has water at the ground.
Definition water_map.h:352
WaterClass::Sea
@ Sea
Sea.
HasTileWaterClass
bool HasTileWaterClass(Tile t)
Checks whether the tile has an waterclass associated.
Definition water_map.h:103
GetWaterClass
WaterClass GetWaterClass(Tile t)
Get the water class at a tile.
Definition water_map.h:114
yapf_cache.h
Entry point for OpenTTD to YAPF's cache.
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:665