OpenTTD Source: src/tunnelbridge_cmd.cpp Source File

OpenTTD Source 14.0-beta1

tunnelbridge_cmd.cpp
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1 /*
2 * This file is part of OpenTTD.
3 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6 */
7
14 #include "stdafx.h"
15 #include "newgrf_object.h"
16 #include "viewport_func.h"
17 #include "command_func.h"
18 #include "town.h"
19 #include "train.h"
20 #include "ship.h"
21 #include "roadveh.h"
22 #include "pathfinder/yapf/yapf_cache.h"
23 #include "pathfinder/water_regions.h"
24 #include "newgrf_sound.h"
25 #include "autoslope.h"
26 #include "tunnelbridge_map.h"
27 #include "strings_func.h"
28 #include "timer/timer_game_calendar.h"
29 #include "clear_func.h"
30 #include "vehicle_func.h"
31 #include "sound_func.h"
32 #include "tunnelbridge.h"
33 #include "cheat_type.h"
34 #include "elrail_func.h"
35 #include "pbs.h"
36 #include "company_base.h"
37 #include "newgrf_railtype.h"
38 #include "newgrf_roadtype.h"
39 #include "object_base.h"
40 #include "water.h"
41 #include "company_gui.h"
42 #include "station_func.h"
43 #include "tunnelbridge_cmd.h"
44 #include "landscape_cmd.h"
45 #include "terraform_cmd.h"
46
47 #include "table/strings.h"
48 #include "table/bridge_land.h"
49
50 #include "safeguards.h"
51
52 BridgeSpec _bridge[MAX_BRIDGES];
53 TileIndex _build_tunnel_endtile;
54
56 static const int BRIDGE_Z_START = 3;
57
58
67 void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
68 {
69 TileIndexDiff delta = TileOffsByDiagDir(direction);
70 for (TileIndex t = begin; t != end; t += delta) {
71 MarkTileDirtyByTile(t, bridge_height - TileHeight(t));
72 }
73 MarkTileDirtyByTile(end);
74 }
75
80 void MarkBridgeDirty(TileIndex tile)
81 {
82 MarkBridgeDirty(tile, GetOtherTunnelBridgeEnd(tile), GetTunnelBridgeDirection(tile), GetBridgeHeight(tile));
83 }
84
86 void ResetBridges()
87 {
88 /* First, free sprite table data */
89 for (BridgeType i = 0; i < MAX_BRIDGES; i++) {
90 if (_bridge[i].sprite_table != nullptr) {
91 for (BridgePieces j = BRIDGE_PIECE_NORTH; j < BRIDGE_PIECE_INVALID; j++) free(_bridge[i].sprite_table[j]);
92 free(_bridge[i].sprite_table);
93 }
94 }
95
96 /* Then, wipe out current bridges */
97 memset(&_bridge, 0, sizeof(_bridge));
98 /* And finally, reinstall default data */
99 memcpy(&_bridge, &_orig_bridge, sizeof(_orig_bridge));
100 }
101
108 int CalcBridgeLenCostFactor(int length)
109 {
110 if (length < 2) return length;
111
112 length -= 2;
113 int sum = 2;
114 for (int delta = 1;; delta++) {
115 for (int count = 0; count < delta; count++) {
116 if (length == 0) return sum;
117 sum += delta;
118 length--;
119 }
120 }
121 }
122
129 Foundation GetBridgeFoundation(Slope tileh, Axis axis)
130 {
131 if (tileh == SLOPE_FLAT ||
132 ((tileh == SLOPE_NE || tileh == SLOPE_SW) && axis == AXIS_X) ||
133 ((tileh == SLOPE_NW || tileh == SLOPE_SE) && axis == AXIS_Y)) return FOUNDATION_NONE;
134
135 return (HasSlopeHighestCorner(tileh) ? InclinedFoundation(axis) : FlatteningFoundation(tileh));
136 }
137
145 bool HasBridgeFlatRamp(Slope tileh, Axis axis)
146 {
147 ApplyFoundationToSlope(GetBridgeFoundation(tileh, axis), &tileh);
148 /* If the foundation slope is flat the bridge has a non-flat ramp and vice versa. */
149 return (tileh != SLOPE_FLAT);
150 }
151
152 static inline const PalSpriteID *GetBridgeSpriteTable(int index, BridgePieces table)
153 {
154 const BridgeSpec *bridge = GetBridgeSpec(index);
155 assert(table < BRIDGE_PIECE_INVALID);
156 if (bridge->sprite_table == nullptr || bridge->sprite_table[table] == nullptr) {
157 return _bridge_sprite_table[index][table];
158 } else {
159 return bridge->sprite_table[table];
160 }
161 }
162
163
173 static CommandCost CheckBridgeSlope(BridgePieces bridge_piece, Axis axis, Slope *tileh, int *z)
174 {
175 assert(bridge_piece == BRIDGE_PIECE_NORTH || bridge_piece == BRIDGE_PIECE_SOUTH);
176
177 Foundation f = GetBridgeFoundation(*tileh, axis);
178 *z += ApplyFoundationToSlope(f, tileh);
179
180 Slope valid_inclined;
181 if (bridge_piece == BRIDGE_PIECE_NORTH) {
182 valid_inclined = (axis == AXIS_X ? SLOPE_NE : SLOPE_NW);
183 } else {
184 valid_inclined = (axis == AXIS_X ? SLOPE_SW : SLOPE_SE);
185 }
186 if ((*tileh != SLOPE_FLAT) && (*tileh != valid_inclined)) return CMD_ERROR;
187
188 if (f == FOUNDATION_NONE) return CommandCost();
189
190 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
191 }
192
200 CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
201 {
202 if (flags & DC_QUERY_COST) {
203 if (bridge_len <= _settings_game.construction.max_bridge_length) return CommandCost();
204 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
205 }
206
207 if (bridge_type >= MAX_BRIDGES) return CMD_ERROR;
208
209 const BridgeSpec *b = GetBridgeSpec(bridge_type);
210 if (b->avail_year > TimerGameCalendar::year) return CMD_ERROR;
211
212 uint max = std::min(b->max_length, _settings_game.construction.max_bridge_length);
213
214 if (b->min_length > bridge_len) return CMD_ERROR;
215 if (bridge_len <= max) return CommandCost();
216 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
217 }
218
224 static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
225 {
226 Money base_cost = _price[base_price];
227
228 /* Add the cost of the transport that is on the tunnel/bridge. */
229 switch (GetTunnelBridgeTransportType(tile)) {
230 case TRANSPORT_ROAD: {
231 RoadType road_rt = GetRoadTypeRoad(tile);
232 RoadType tram_rt = GetRoadTypeTram(tile);
233
234 if (road_rt != INVALID_ROADTYPE) {
235 base_cost += 2 * RoadClearCost(road_rt);
236 }
237 if (tram_rt != INVALID_ROADTYPE) {
238 base_cost += 2 * RoadClearCost(tram_rt);
239 }
240 } break;
241
242 case TRANSPORT_RAIL: base_cost += RailClearCost(GetRailType(tile)); break;
243 /* Aquaducts have their own clear price. */
244 case TRANSPORT_WATER: base_cost = _price[PR_CLEAR_AQUEDUCT]; break;
245 default: break;
246 }
247
248 return base_cost;
249 }
250
261 CommandCost CmdBuildBridge(DoCommandFlag flags, TileIndex tile_end, TileIndex tile_start, TransportType transport_type, BridgeType bridge_type, byte road_rail_type)
262 {
263 CompanyID company = _current_company;
264
265 RailType railtype = INVALID_RAILTYPE;
266 RoadType roadtype = INVALID_ROADTYPE;
267
268 if (!IsValidTile(tile_start)) return_cmd_error(STR_ERROR_BRIDGE_THROUGH_MAP_BORDER);
269
270 /* type of bridge */
271 switch (transport_type) {
272 case TRANSPORT_ROAD:
273 roadtype = (RoadType)road_rail_type;
274 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
275 break;
276
277 case TRANSPORT_RAIL:
278 railtype = (RailType)road_rail_type;
279 if (!ValParamRailType(railtype)) return CMD_ERROR;
280 break;
281
282 case TRANSPORT_WATER:
283 break;
284
285 default:
286 /* Airports don't have bridges. */
287 return CMD_ERROR;
288 }
289
290 if (company == OWNER_DEITY) {
291 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
292 const Town *town = CalcClosestTownFromTile(tile_start);
293
294 company = OWNER_TOWN;
295
296 /* If we are not within a town, we are not owned by the town */
297 if (town == nullptr || DistanceSquare(tile_start, town->xy) > town->cache.squared_town_zone_radius[HZB_TOWN_EDGE]) {
298 company = OWNER_NONE;
299 }
300 }
301
302 if (tile_start == tile_end) {
303 return_cmd_error(STR_ERROR_CAN_T_START_AND_END_ON);
304 }
305
306 Axis direction;
307 if (TileX(tile_start) == TileX(tile_end)) {
308 direction = AXIS_Y;
309 } else if (TileY(tile_start) == TileY(tile_end)) {
310 direction = AXIS_X;
311 } else {
312 return_cmd_error(STR_ERROR_START_AND_END_MUST_BE_IN);
313 }
314
315 if (tile_end < tile_start) Swap(tile_start, tile_end);
316
317 uint bridge_len = GetTunnelBridgeLength(tile_start, tile_end);
318 if (transport_type != TRANSPORT_WATER) {
319 /* set and test bridge length, availability */
320 CommandCost ret = CheckBridgeAvailability(bridge_type, bridge_len, flags);
321 if (ret.Failed()) return ret;
322 } else {
323 if (bridge_len > _settings_game.construction.max_bridge_length) return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
324 }
325 bridge_len += 2; // begin and end tiles/ramps
326
327 int z_start;
328 int z_end;
329 Slope tileh_start = GetTileSlope(tile_start, &z_start);
330 Slope tileh_end = GetTileSlope(tile_end, &z_end);
331 bool pbs_reservation = false;
332
333 CommandCost terraform_cost_north = CheckBridgeSlope(BRIDGE_PIECE_NORTH, direction, &tileh_start, &z_start);
334 CommandCost terraform_cost_south = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, direction, &tileh_end, &z_end);
335
336 /* Aqueducts can't be built of flat land. */
337 if (transport_type == TRANSPORT_WATER && (tileh_start == SLOPE_FLAT || tileh_end == SLOPE_FLAT)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
338 if (z_start != z_end) return_cmd_error(STR_ERROR_BRIDGEHEADS_NOT_SAME_HEIGHT);
339
340 CommandCost cost(EXPENSES_CONSTRUCTION);
341 Owner owner;
342 bool is_new_owner;
343 RoadType road_rt = INVALID_ROADTYPE;
344 RoadType tram_rt = INVALID_ROADTYPE;
345 if (IsBridgeTile(tile_start) && IsBridgeTile(tile_end) &&
346 GetOtherBridgeEnd(tile_start) == tile_end &&
347 GetTunnelBridgeTransportType(tile_start) == transport_type) {
348 /* Replace a current bridge. */
349
350 switch (transport_type) {
351 case TRANSPORT_RAIL:
352 /* Keep the reservation, the path stays valid. */
353 pbs_reservation = HasTunnelBridgeReservation(tile_start);
354 break;
355
356 case TRANSPORT_ROAD:
357 /* Do not remove road types when upgrading a bridge */
358 road_rt = GetRoadTypeRoad(tile_start);
359 tram_rt = GetRoadTypeTram(tile_start);
360 break;
361
362 default: break;
363 }
364
365 /* If this is a railway bridge, make sure the railtypes match. */
366 if (transport_type == TRANSPORT_RAIL && GetRailType(tile_start) != railtype) {
367 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
368 }
369
370 /* If this is a road bridge, make sure the roadtype matches. */
371 if (transport_type == TRANSPORT_ROAD) {
372 RoadType existing_rt = RoadTypeIsRoad(roadtype) ? road_rt : tram_rt;
373 if (existing_rt != roadtype && existing_rt != INVALID_ROADTYPE) {
374 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
375 }
376 }
377
378 /* Do not replace town bridges with lower speed bridges, unless in scenario editor. */
379 if (!(flags & DC_QUERY_COST) && IsTileOwner(tile_start, OWNER_TOWN) &&
380 GetBridgeSpec(bridge_type)->speed < GetBridgeSpec(GetBridgeType(tile_start))->speed &&
381 _game_mode != GM_EDITOR) {
382 Town *t = ClosestTownFromTile(tile_start, UINT_MAX);
383
384 if (t == nullptr) {
385 return CMD_ERROR;
386 } else {
387 SetDParam(0, t->index);
388 return_cmd_error(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS);
389 }
390 }
391
392 /* Do not replace the bridge with the same bridge type. */
393 if (!(flags & DC_QUERY_COST) && (bridge_type == GetBridgeType(tile_start)) && (transport_type != TRANSPORT_ROAD || road_rt == roadtype || tram_rt == roadtype)) {
394 return_cmd_error(STR_ERROR_ALREADY_BUILT);
395 }
396
397 /* Do not allow replacing another company's bridges. */
398 if (!IsTileOwner(tile_start, company) && !IsTileOwner(tile_start, OWNER_TOWN) && !IsTileOwner(tile_start, OWNER_NONE)) {
399 return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
400 }
401
402 /* The cost of clearing the current bridge. */
403 cost.AddCost(bridge_len * TunnelBridgeClearCost(tile_start, PR_CLEAR_BRIDGE));
404 owner = GetTileOwner(tile_start);
405
406 /* If bridge belonged to bankrupt company, it has a new owner now */
407 is_new_owner = (owner == OWNER_NONE);
408 if (is_new_owner) owner = company;
409 } else {
410 /* Build a new bridge. */
411
412 bool allow_on_slopes = (_settings_game.construction.build_on_slopes && transport_type != TRANSPORT_WATER);
413
414 /* Try and clear the start landscape */
415 CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile_start);
416 if (ret.Failed()) return ret;
417 cost = ret;
418
419 if (terraform_cost_north.Failed() || (terraform_cost_north.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
420 cost.AddCost(terraform_cost_north);
421
422 /* Try and clear the end landscape */
423 ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile_end);
424 if (ret.Failed()) return ret;
425 cost.AddCost(ret);
426
427 /* false - end tile slope check */
428 if (terraform_cost_south.Failed() || (terraform_cost_south.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
429 cost.AddCost(terraform_cost_south);
430
431 const TileIndex heads[] = {tile_start, tile_end};
432 for (int i = 0; i < 2; i++) {
433 if (IsBridgeAbove(heads[i])) {
434 TileIndex north_head = GetNorthernBridgeEnd(heads[i]);
435
436 if (direction == GetBridgeAxis(heads[i])) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
437
438 if (z_start + 1 == GetBridgeHeight(north_head)) {
439 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
440 }
441 }
442 }
443
444 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
445 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
446 if (GetTileMaxZ(tile) > z_start) return_cmd_error(STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN);
447
448 if (z_start >= (GetTileZ(tile) + _settings_game.construction.max_bridge_height)) {
449 /*
450 * Disallow too high bridges.
451 * Properly rendering a map where very high bridges (might) exist is expensive.
452 * See http://www.tt-forums.net/viewtopic.php?f=33&t=40844&start=980#p1131762
453 * for a detailed discussion. z_start here is one heightlevel below the bridge level.
454 */
455 return_cmd_error(STR_ERROR_BRIDGE_TOO_HIGH_FOR_TERRAIN);
456 }
457
458 if (IsBridgeAbove(tile)) {
459 /* Disallow crossing bridges for the time being */
460 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
461 }
462
463 switch (GetTileType(tile)) {
464 case MP_WATER:
465 if (!IsWater(tile) && !IsCoast(tile)) goto not_valid_below;
466 break;
467
468 case MP_RAILWAY:
469 if (!IsPlainRail(tile)) goto not_valid_below;
470 break;
471
472 case MP_ROAD:
473 if (IsRoadDepot(tile)) goto not_valid_below;
474 break;
475
476 case MP_TUNNELBRIDGE:
477 if (IsTunnel(tile)) break;
478 if (direction == DiagDirToAxis(GetTunnelBridgeDirection(tile))) goto not_valid_below;
479 if (z_start < GetBridgeHeight(tile)) goto not_valid_below;
480 break;
481
482 case MP_OBJECT: {
483 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
484 if ((spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) == 0) goto not_valid_below;
485 if (GetTileMaxZ(tile) + spec->height > z_start) goto not_valid_below;
486 break;
487 }
488
489 case MP_CLEAR:
490 break;
491
492 default:
493 not_valid_below:;
494 /* try and clear the middle landscape */
495 ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
496 if (ret.Failed()) return ret;
497 cost.AddCost(ret);
498 break;
499 }
500
501 if (flags & DC_EXEC) {
502 /* We do this here because when replacing a bridge with another
503 * type calling SetBridgeMiddle isn't needed. After all, the
504 * tile already has the has_bridge_above bits set. */
505 SetBridgeMiddle(tile, direction);
506 }
507 }
508
509 owner = company;
510 is_new_owner = true;
511 }
512
513 bool hasroad = road_rt != INVALID_ROADTYPE;
514 bool hastram = tram_rt != INVALID_ROADTYPE;
515 if (transport_type == TRANSPORT_ROAD) {
516 if (RoadTypeIsRoad(roadtype)) road_rt = roadtype;
517 if (RoadTypeIsTram(roadtype)) tram_rt = roadtype;
518 }
519
520 /* do the drill? */
521 if (flags & DC_EXEC) {
522 DiagDirection dir = AxisToDiagDir(direction);
523
524 Company *c = Company::GetIfValid(company);
525 switch (transport_type) {
526 case TRANSPORT_RAIL:
527 /* Add to company infrastructure count if required. */
528 if (is_new_owner && c != nullptr) c->infrastructure.rail[railtype] += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
529 MakeRailBridgeRamp(tile_start, owner, bridge_type, dir, railtype);
530 MakeRailBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), railtype);
531 SetTunnelBridgeReservation(tile_start, pbs_reservation);
532 SetTunnelBridgeReservation(tile_end, pbs_reservation);
533 break;
534
535 case TRANSPORT_ROAD: {
536 if (is_new_owner) {
537 /* Also give unowned present roadtypes to new owner */
538 if (hasroad && GetRoadOwner(tile_start, RTT_ROAD) == OWNER_NONE) hasroad = false;
539 if (hastram && GetRoadOwner(tile_start, RTT_TRAM) == OWNER_NONE) hastram = false;
540 }
541 if (c != nullptr) {
542 /* Add all new road types to the company infrastructure counter. */
543 if (!hasroad && road_rt != INVALID_ROADTYPE) {
544 /* A full diagonal road tile has two road bits. */
545 c->infrastructure.road[road_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
546 }
547 if (!hastram && tram_rt != INVALID_ROADTYPE) {
548 /* A full diagonal road tile has two road bits. */
549 c->infrastructure.road[tram_rt] += bridge_len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
550 }
551 }
552 Owner owner_road = hasroad ? GetRoadOwner(tile_start, RTT_ROAD) : company;
553 Owner owner_tram = hastram ? GetRoadOwner(tile_start, RTT_TRAM) : company;
554 MakeRoadBridgeRamp(tile_start, owner, owner_road, owner_tram, bridge_type, dir, road_rt, tram_rt);
555 MakeRoadBridgeRamp(tile_end, owner, owner_road, owner_tram, bridge_type, ReverseDiagDir(dir), road_rt, tram_rt);
556 break;
557 }
558
559 case TRANSPORT_WATER:
560 if (is_new_owner && c != nullptr) c->infrastructure.water += bridge_len * TUNNELBRIDGE_TRACKBIT_FACTOR;
561 MakeAqueductBridgeRamp(tile_start, owner, dir);
562 MakeAqueductBridgeRamp(tile_end, owner, ReverseDiagDir(dir));
563 CheckForDockingTile(tile_start);
564 CheckForDockingTile(tile_end);
565 break;
566
567 default:
568 NOT_REACHED();
569 }
570
571 /* Mark all tiles dirty */
572 MarkBridgeDirty(tile_start, tile_end, AxisToDiagDir(direction), z_start);
573 DirtyCompanyInfrastructureWindows(company);
574 }
575
576 if ((flags & DC_EXEC) && transport_type == TRANSPORT_RAIL) {
577 Track track = AxisToTrack(direction);
578 AddSideToSignalBuffer(tile_start, INVALID_DIAGDIR, company);
579 YapfNotifyTrackLayoutChange(tile_start, track);
580 }
581
582 /* Human players that build bridges get a selection to choose from (DC_QUERY_COST)
583 * It's unnecessary to execute this command every time for every bridge.
584 * So it is done only for humans and cost is computed in bridge_gui.cpp.
585 * For (non-spectated) AI, Towns this has to be of course calculated. */
586 Company *c = Company::GetIfValid(company);
587 if (!(flags & DC_QUERY_COST) || (c != nullptr && c->is_ai && company != _local_company)) {
588 switch (transport_type) {
589 case TRANSPORT_ROAD:
590 if (road_rt != INVALID_ROADTYPE) {
591 cost.AddCost(bridge_len * 2 * RoadBuildCost(road_rt));
592 }
593 if (tram_rt != INVALID_ROADTYPE) {
594 cost.AddCost(bridge_len * 2 * RoadBuildCost(tram_rt));
595 }
596 break;
597
598 case TRANSPORT_RAIL: cost.AddCost(bridge_len * RailBuildCost(railtype)); break;
599 default: break;
600 }
601
602 if (c != nullptr) bridge_len = CalcBridgeLenCostFactor(bridge_len);
603
604 if (transport_type != TRANSPORT_WATER) {
605 cost.AddCost((int64_t)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
606 } else {
607 /* Aqueducts use a separate base cost. */
608 cost.AddCost((int64_t)bridge_len * _price[PR_BUILD_AQUEDUCT]);
609 }
610
611 }
612
613 return cost;
614 }
615
616
625 CommandCost CmdBuildTunnel(DoCommandFlag flags, TileIndex start_tile, TransportType transport_type, byte road_rail_type)
626 {
627 CompanyID company = _current_company;
628
629 RailType railtype = INVALID_RAILTYPE;
630 RoadType roadtype = INVALID_ROADTYPE;
631 _build_tunnel_endtile = 0;
632 switch (transport_type) {
633 case TRANSPORT_RAIL:
634 railtype = (RailType)road_rail_type;
635 if (!ValParamRailType(railtype)) return CMD_ERROR;
636 break;
637
638 case TRANSPORT_ROAD:
639 roadtype = (RoadType)road_rail_type;
640 if (!ValParamRoadType(roadtype)) return CMD_ERROR;
641 break;
642
643 default: return CMD_ERROR;
644 }
645
646 if (company == OWNER_DEITY) {
647 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
648 const Town *town = CalcClosestTownFromTile(start_tile);
649
650 company = OWNER_TOWN;
651
652 /* If we are not within a town, we are not owned by the town */
653 if (town == nullptr || DistanceSquare(start_tile, town->xy) > town->cache.squared_town_zone_radius[HZB_TOWN_EDGE]) {
654 company = OWNER_NONE;
655 }
656 }
657
658 int start_z;
659 int end_z;
660 Slope start_tileh = GetTileSlope(start_tile, &start_z);
661 DiagDirection direction = GetInclinedSlopeDirection(start_tileh);
662 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE_FOR_TUNNEL);
663
664 if (HasTileWaterGround(start_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
665
666 CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, start_tile);
667 if (ret.Failed()) return ret;
668
669 /* XXX - do NOT change 'ret' in the loop, as it is used as the price
670 * for the clearing of the entrance of the tunnel. Assigning it to
671 * cost before the loop will yield different costs depending on start-
672 * position, because of increased-cost-by-length: 'cost += cost >> 3' */
673
674 TileIndexDiff delta = TileOffsByDiagDir(direction);
675 DiagDirection tunnel_in_way_dir;
676 if (DiagDirToAxis(direction) == AXIS_Y) {
677 tunnel_in_way_dir = (TileX(start_tile) < (Map::MaxX() / 2)) ? DIAGDIR_SW : DIAGDIR_NE;
678 } else {
679 tunnel_in_way_dir = (TileY(start_tile) < (Map::MaxX() / 2)) ? DIAGDIR_SE : DIAGDIR_NW;
680 }
681
682 TileIndex end_tile = start_tile;
683
684 /* Tile shift coefficient. Will decrease for very long tunnels to avoid exponential growth of price*/
685 int tiles_coef = 3;
686 /* Number of tiles from start of tunnel */
687 int tiles = 0;
688 /* Number of tiles at which the cost increase coefficient per tile is halved */
689 int tiles_bump = 25;
690
691 CommandCost cost(EXPENSES_CONSTRUCTION);
692 Slope end_tileh;
693 for (;;) {
694 end_tile += delta;
695 if (!IsValidTile(end_tile)) return_cmd_error(STR_ERROR_TUNNEL_THROUGH_MAP_BORDER);
696 end_tileh = GetTileSlope(end_tile, &end_z);
697
698 if (start_z == end_z) break;
699
700 if (!_cheats.crossing_tunnels.value && IsTunnelInWayDir(end_tile, start_z, tunnel_in_way_dir)) {
701 return_cmd_error(STR_ERROR_ANOTHER_TUNNEL_IN_THE_WAY);
702 }
703
704 tiles++;
705 if (tiles == tiles_bump) {
706 tiles_coef++;
707 tiles_bump *= 2;
708 }
709
710 cost.AddCost(_price[PR_BUILD_TUNNEL]);
711 cost.AddCost(cost.GetCost() >> tiles_coef); // add a multiplier for longer tunnels
712 }
713
714 /* Add the cost of the entrance */
715 cost.AddCost(_price[PR_BUILD_TUNNEL]);
716 cost.AddCost(ret);
717
718 /* if the command fails from here on we want the end tile to be highlighted */
719 _build_tunnel_endtile = end_tile;
720
721 if (tiles > _settings_game.construction.max_tunnel_length) return_cmd_error(STR_ERROR_TUNNEL_TOO_LONG);
722
723 if (HasTileWaterGround(end_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
724
725 /* Clear the tile in any case */
726 ret = Command<CMD_LANDSCAPE_CLEAR>::Do(flags, end_tile);
727 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
728 cost.AddCost(ret);
729
730 /* slope of end tile must be complementary to the slope of the start tile */
731 if (end_tileh != ComplementSlope(start_tileh)) {
732 /* Mark the tile as already cleared for the terraform command.
733 * Do this for all tiles (like trees), not only objects. */
734 ClearedObjectArea *coa = FindClearedObject(end_tile);
735 if (coa == nullptr) {
736 coa = &_cleared_object_areas.emplace_back(ClearedObjectArea{ end_tile, TileArea(end_tile, 1, 1) });
737 }
738
739 /* Hide the tile from the terraforming command */
740 TileIndex old_first_tile = coa->first_tile;
741 coa->first_tile = INVALID_TILE;
742
743 /* CMD_TERRAFORM_LAND may append further items to _cleared_object_areas,
744 * however it will never erase or re-order existing items.
745 * _cleared_object_areas is a value-type self-resizing vector, therefore appending items
746 * may result in a backing-store re-allocation, which would invalidate the coa pointer.
747 * The index of the coa pointer into the _cleared_object_areas vector remains valid,
748 * and can be used safely after the CMD_TERRAFORM_LAND operation.
749 * Deliberately clear the coa pointer to avoid leaving dangling pointers which could
750 * inadvertently be dereferenced.
751 */
752 ClearedObjectArea *begin = _cleared_object_areas.data();
753 assert(coa >= begin && coa < begin + _cleared_object_areas.size());
754 size_t coa_index = coa - begin;
755 assert(coa_index < UINT_MAX); // more than 2**32 cleared areas would be a bug in itself
756 coa = nullptr;
757
758 ret = std::get<0>(Command<CMD_TERRAFORM_LAND>::Do(flags, end_tile, end_tileh & start_tileh, false));
759 _cleared_object_areas[(uint)coa_index].first_tile = old_first_tile;
760 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
761 cost.AddCost(ret);
762 }
763 cost.AddCost(_price[PR_BUILD_TUNNEL]);
764
765 /* Pay for the rail/road in the tunnel including entrances */
766 switch (transport_type) {
767 case TRANSPORT_ROAD: cost.AddCost((tiles + 2) * RoadBuildCost(roadtype) * 2); break;
768 case TRANSPORT_RAIL: cost.AddCost((tiles + 2) * RailBuildCost(railtype)); break;
769 default: NOT_REACHED();
770 }
771
772 if (flags & DC_EXEC) {
773 Company *c = Company::GetIfValid(company);
774 uint num_pieces = (tiles + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
775 if (transport_type == TRANSPORT_RAIL) {
776 if (c != nullptr) c->infrastructure.rail[railtype] += num_pieces;
777 MakeRailTunnel(start_tile, company, direction, railtype);
778 MakeRailTunnel(end_tile, company, ReverseDiagDir(direction), railtype);
779 AddSideToSignalBuffer(start_tile, INVALID_DIAGDIR, company);
780 YapfNotifyTrackLayoutChange(start_tile, DiagDirToDiagTrack(direction));
781 } else {
782 if (c != nullptr) c->infrastructure.road[roadtype] += num_pieces * 2; // A full diagonal road has two road bits.
783 RoadType road_rt = RoadTypeIsRoad(roadtype) ? roadtype : INVALID_ROADTYPE;
784 RoadType tram_rt = RoadTypeIsTram(roadtype) ? roadtype : INVALID_ROADTYPE;
785 MakeRoadTunnel(start_tile, company, direction, road_rt, tram_rt);
786 MakeRoadTunnel(end_tile, company, ReverseDiagDir(direction), road_rt, tram_rt);
787 }
788 DirtyCompanyInfrastructureWindows(company);
789 }
790
791 return cost;
792 }
793
794
800 static inline CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
801 {
802 /* Floods can remove anything as well as the scenario editor */
803 if (_current_company == OWNER_WATER || _game_mode == GM_EDITOR) return CommandCost();
804
805 switch (GetTunnelBridgeTransportType(tile)) {
806 case TRANSPORT_ROAD: {
807 RoadType road_rt = GetRoadTypeRoad(tile);
808 RoadType tram_rt = GetRoadTypeTram(tile);
809 Owner road_owner = _current_company;
810 Owner tram_owner = _current_company;
811
812 if (road_rt != INVALID_ROADTYPE) road_owner = GetRoadOwner(tile, RTT_ROAD);
813 if (tram_rt != INVALID_ROADTYPE) tram_owner = GetRoadOwner(tile, RTT_TRAM);
814
815 /* We can remove unowned road and if the town allows it */
816 if (road_owner == OWNER_TOWN && _current_company != OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
817 /* Town does not allow */
818 return CheckTileOwnership(tile);
819 }
820 if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
821 if (tram_owner == OWNER_NONE) tram_owner = _current_company;
822
823 CommandCost ret = CheckOwnership(road_owner, tile);
824 if (ret.Succeeded()) ret = CheckOwnership(tram_owner, tile);
825 return ret;
826 }
827
828 case TRANSPORT_RAIL:
829 return CheckOwnership(GetTileOwner(tile));
830
831 case TRANSPORT_WATER: {
832 /* Always allow to remove aqueducts without owner. */
833 Owner aqueduct_owner = GetTileOwner(tile);
834 if (aqueduct_owner == OWNER_NONE) aqueduct_owner = _current_company;
835 return CheckOwnership(aqueduct_owner);
836 }
837
838 default: NOT_REACHED();
839 }
840 }
841
848 static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
849 {
850 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
851 if (ret.Failed()) return ret;
852
853 TileIndex endtile = GetOtherTunnelEnd(tile);
854
855 ret = TunnelBridgeIsFree(tile, endtile);
856 if (ret.Failed()) return ret;
857
858 _build_tunnel_endtile = endtile;
859
860 Town *t = nullptr;
861 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
862 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
863
864 /* Check if you are allowed to remove the tunnel owned by a town
865 * Removal depends on difficulty settings */
866 ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
867 if (ret.Failed()) return ret;
868 }
869
870 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
871 * you have a "Poor" (0) town rating */
872 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
873 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
874 }
875
876 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_TUNNEL);
877 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
878
879 if (flags & DC_EXEC) {
880 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
881 /* We first need to request values before calling DoClearSquare */
882 DiagDirection dir = GetTunnelBridgeDirection(tile);
883 Track track = DiagDirToDiagTrack(dir);
884 Owner owner = GetTileOwner(tile);
885
886 Train *v = nullptr;
887 if (HasTunnelBridgeReservation(tile)) {
888 v = GetTrainForReservation(tile, track);
889 if (v != nullptr) FreeTrainTrackReservation(v);
890 }
891
892 if (Company::IsValidID(owner)) {
893 Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
894 DirtyCompanyInfrastructureWindows(owner);
895 }
896
897 DoClearSquare(tile);
898 DoClearSquare(endtile);
899
900 /* cannot use INVALID_DIAGDIR for signal update because the tunnel doesn't exist anymore */
901 AddSideToSignalBuffer(tile, ReverseDiagDir(dir), owner);
902 AddSideToSignalBuffer(endtile, dir, owner);
903
904 YapfNotifyTrackLayoutChange(tile, track);
905 YapfNotifyTrackLayoutChange(endtile, track);
906
907 if (v != nullptr) TryPathReserve(v);
908 } else {
909 /* A full diagonal road tile has two road bits. */
910 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
911 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
912
913 DoClearSquare(tile);
914 DoClearSquare(endtile);
915 }
916 }
917
918 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
919 }
920
921
928 static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
929 {
930 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
931 if (ret.Failed()) return ret;
932
933 TileIndex endtile = GetOtherBridgeEnd(tile);
934
935 ret = TunnelBridgeIsFree(tile, endtile);
936 if (ret.Failed()) return ret;
937
938 DiagDirection direction = GetTunnelBridgeDirection(tile);
939 TileIndexDiff delta = TileOffsByDiagDir(direction);
940
941 Town *t = nullptr;
942 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
943 t = ClosestTownFromTile(tile, UINT_MAX); // town penalty rating
944
945 /* Check if you are allowed to remove the bridge owned by a town
946 * Removal depends on difficulty settings */
947 ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
948 if (ret.Failed()) return ret;
949 }
950
951 /* checks if the owner is town then decrease town rating by RATING_TUNNEL_BRIDGE_DOWN_STEP until
952 * you have a "Poor" (0) town rating */
953 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
954 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
955 }
956
957 Money base_cost = TunnelBridgeClearCost(tile, PR_CLEAR_BRIDGE);
958 uint len = GetTunnelBridgeLength(tile, endtile) + 2; // Don't forget the end tiles.
959
960 if (flags & DC_EXEC) {
961 /* read this value before actual removal of bridge */
962 bool rail = GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL;
963 Owner owner = GetTileOwner(tile);
964 int height = GetBridgeHeight(tile);
965 Train *v = nullptr;
966
967 if (rail && HasTunnelBridgeReservation(tile)) {
968 v = GetTrainForReservation(tile, DiagDirToDiagTrack(direction));
969 if (v != nullptr) FreeTrainTrackReservation(v);
970 }
971
972 /* Update company infrastructure counts. */
973 if (rail) {
974 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
975 } else if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
976 /* A full diagonal road tile has two road bits. */
977 UpdateCompanyRoadInfrastructure(GetRoadTypeRoad(tile), GetRoadOwner(tile, RTT_ROAD), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
978 UpdateCompanyRoadInfrastructure(GetRoadTypeTram(tile), GetRoadOwner(tile, RTT_TRAM), -(int)(len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR));
979 } else { // Aqueduct
980 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.water -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
981 }
982 DirtyCompanyInfrastructureWindows(owner);
983
984 DoClearSquare(tile);
985 DoClearSquare(endtile);
986
987 for (TileIndex c = tile + delta; c != endtile; c += delta) {
988 /* do not let trees appear from 'nowhere' after removing bridge */
989 if (IsNormalRoadTile(c) && GetRoadside(c) == ROADSIDE_TREES) {
990 int minz = GetTileMaxZ(c) + 3;
991 if (height < minz) SetRoadside(c, ROADSIDE_PAVED);
992 }
993 ClearBridgeMiddle(c);
994 MarkTileDirtyByTile(c, height - TileHeight(c));
995 }
996
997 if (rail) {
998 /* cannot use INVALID_DIAGDIR for signal update because the bridge doesn't exist anymore */
999 AddSideToSignalBuffer(tile, ReverseDiagDir(direction), owner);
1000 AddSideToSignalBuffer(endtile, direction, owner);
1001
1002 Track track = DiagDirToDiagTrack(direction);
1003 YapfNotifyTrackLayoutChange(tile, track);
1004 YapfNotifyTrackLayoutChange(endtile, track);
1005
1006 if (v != nullptr) TryPathReserve(v, true);
1007 }
1008 }
1009
1010 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
1011 }
1012
1019 static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
1020 {
1021 if (IsTunnel(tile)) {
1022 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_TUNNEL_FIRST);
1023 return DoClearTunnel(tile, flags);
1024 } else { // IsBridge(tile)
1025 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
1026 return DoClearBridge(tile, flags);
1027 }
1028 }
1029
1040 static inline void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
1041 {
1042 static const int PILLAR_Z_OFFSET = TILE_HEIGHT - BRIDGE_Z_START;
1043 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, w, h, BB_HEIGHT_UNDER_BRIDGE - PILLAR_Z_OFFSET, z, IsTransparencySet(TO_BRIDGES), 0, 0, -PILLAR_Z_OFFSET, subsprite);
1044 }
1045
1057 static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
1058 {
1059 int cur_z;
1060 for (cur_z = z_top; cur_z >= z_bottom; cur_z -= TILE_HEIGHT) {
1061 DrawPillar(psid, x, y, cur_z, w, h, nullptr);
1062 }
1063 return cur_z;
1064 }
1065
1077 static void DrawBridgePillars(const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
1078 {
1079 static const int bounding_box_size[2] = {16, 2};
1080 static const int back_pillar_offset[2] = { 0, 9};
1081
1082 static const int INF = 1000;
1083 static const SubSprite half_pillar_sub_sprite[2][2] = {
1084 { { -14, -INF, INF, INF }, { -INF, -INF, -15, INF } }, // X axis, north and south
1085 { { -INF, -INF, 15, INF }, { 16, -INF, INF, INF } }, // Y axis, north and south
1086 };
1087
1088 if (psid->sprite == 0) return;
1089
1090 /* Determine ground height under pillars */
1091 DiagDirection south_dir = AxisToDiagDir(axis);
1092 int z_front_north = ti->z;
1093 int z_back_north = ti->z;
1094 int z_front_south = ti->z;
1095 int z_back_south = ti->z;
1096 GetSlopePixelZOnEdge(ti->tileh, south_dir, &z_front_south, &z_back_south);
1097 GetSlopePixelZOnEdge(ti->tileh, ReverseDiagDir(south_dir), &z_front_north, &z_back_north);
1098
1099 /* Shared height of pillars */
1100 int z_front = std::max(z_front_north, z_front_south);
1101 int z_back = std::max(z_back_north, z_back_south);
1102
1103 /* x and y size of bounding-box of pillars */
1104 int w = bounding_box_size[axis];
1105 int h = bounding_box_size[OtherAxis(axis)];
1106 /* sprite position of back facing pillar */
1107 int x_back = x - back_pillar_offset[axis];
1108 int y_back = y - back_pillar_offset[OtherAxis(axis)];
1109
1110 /* Draw front pillars */
1111 int bottom_z = DrawPillarColumn(z_front, z_bridge, psid, x, y, w, h);
1112 if (z_front_north < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1113 if (z_front_south < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1114
1115 /* Draw back pillars, skip top two parts, which are hidden by the bridge */
1116 int z_bridge_back = z_bridge - 2 * (int)TILE_HEIGHT;
1117 if (drawfarpillar && (z_back_north <= z_bridge_back || z_back_south <= z_bridge_back)) {
1118 bottom_z = DrawPillarColumn(z_back, z_bridge_back, psid, x_back, y_back, w, h);
1119 if (z_back_north < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
1120 if (z_back_south < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
1121 }
1122 }
1123
1133 static void GetBridgeRoadCatenary(const RoadTypeInfo *rti, TileIndex head_tile, int offset, bool head, SpriteID &spr_back, SpriteID &spr_front)
1134 {
1135 static const SpriteID back_offsets[6] = { 95, 96, 99, 102, 100, 101 };
1136 static const SpriteID front_offsets[6] = { 97, 98, 103, 106, 104, 105 };
1137
1138 /* Simplified from DrawRoadTypeCatenary() to remove all the special cases required for regular ground road */
1139 spr_back = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_BACK, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1140 spr_front = GetCustomRoadSprite(rti, head_tile, ROTSG_CATENARY_FRONT, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1141 if (spr_back == 0 && spr_front == 0) {
1142 spr_back = SPR_TRAMWAY_BASE + back_offsets[offset];
1143 spr_front = SPR_TRAMWAY_BASE + front_offsets[offset];
1144 } else {
1145 if (spr_back != 0) spr_back += 23 + offset;
1146 if (spr_front != 0) spr_front += 23 + offset;
1147 }
1148 }
1149
1159 static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head)
1160 {
1161 RoadType road_rt = GetRoadTypeRoad(head_tile);
1162 RoadType tram_rt = GetRoadTypeTram(head_tile);
1163 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1164 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1165
1166 SpriteID seq_back[4] = { 0 };
1167 bool trans_back[4] = { false };
1168 SpriteID seq_front[4] = { 0 };
1169 bool trans_front[4] = { false };
1170
1171 static const SpriteID overlay_offsets[6] = { 0, 1, 11, 12, 13, 14 };
1172 if (head || !IsInvisibilitySet(TO_BRIDGES)) {
1173 /* Road underlay takes precedence over tram */
1174 trans_back[0] = !head && IsTransparencySet(TO_BRIDGES);
1175 if (road_rti != nullptr) {
1176 if (road_rti->UsesOverlay()) {
1177 seq_back[0] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1178 }
1179 } else if (tram_rti != nullptr) {
1180 if (tram_rti->UsesOverlay()) {
1181 seq_back[0] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_BRIDGE, head ? TCX_NORMAL : TCX_ON_BRIDGE) + offset;
1182 } else {
1183 seq_back[0] = SPR_TRAMWAY_BRIDGE + offset;
1184 }
1185 }
1186
1187 /* Draw road overlay */
1188 trans_back[1] = !head && IsTransparencySet(TO_BRIDGES);
1189 if (road_rti != nullptr) {
1190 if (road_rti->UsesOverlay()) {
1191 seq_back[1] = GetCustomRoadSprite(road_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1192 if (seq_back[1] != 0) seq_back[1] += overlay_offsets[offset];
1193 }
1194 }
1195
1196 /* Draw tram overlay */
1197 trans_back[2] = !head && IsTransparencySet(TO_BRIDGES);
1198 if (tram_rti != nullptr) {
1199 if (tram_rti->UsesOverlay()) {
1200 seq_back[2] = GetCustomRoadSprite(tram_rti, head_tile, ROTSG_OVERLAY, head ? TCX_NORMAL : TCX_ON_BRIDGE);
1201 if (seq_back[2] != 0) seq_back[2] += overlay_offsets[offset];
1202 } else if (road_rti != nullptr) {
1203 seq_back[2] = SPR_TRAMWAY_OVERLAY + overlay_offsets[offset];
1204 }
1205 }
1206
1207 /* Road catenary takes precedence over tram */
1208 trans_back[3] = IsTransparencySet(TO_CATENARY);
1209 trans_front[0] = IsTransparencySet(TO_CATENARY);
1210 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1211 GetBridgeRoadCatenary(road_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1212 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1213 GetBridgeRoadCatenary(tram_rti, head_tile, offset, head, seq_back[3], seq_front[0]);
1214 }
1215 }
1216
1217 static const uint size_x[6] = { 1, 16, 16, 1, 16, 1 };
1218 static const uint size_y[6] = { 16, 1, 1, 16, 1, 16 };
1219 static const uint front_bb_offset_x[6] = { 15, 0, 0, 15, 0, 15 };
1220 static const uint front_bb_offset_y[6] = { 0, 15, 15, 0, 15, 0 };
1221
1222 /* The sprites under the vehicles are drawn as SpriteCombine. StartSpriteCombine() has already been called
1223 * The bounding boxes here are the same as for bridge front/roof */
1224 for (uint i = 0; i < lengthof(seq_back); ++i) {
1225 if (seq_back[i] != 0) {
1226 AddSortableSpriteToDraw(seq_back[i], PAL_NONE,
1227 x, y, size_x[offset], size_y[offset], 0x28, z,
1228 trans_back[i]);
1229 }
1230 }
1231
1232 /* Start a new SpriteCombine for the front part */
1233 EndSpriteCombine();
1234 StartSpriteCombine();
1235
1236 for (uint i = 0; i < lengthof(seq_front); ++i) {
1237 if (seq_front[i] != 0) {
1238 AddSortableSpriteToDraw(seq_front[i], PAL_NONE,
1239 x, y, size_x[offset] + front_bb_offset_x[offset], size_y[offset] + front_bb_offset_y[offset], 0x28, z,
1240 trans_front[i],
1241 front_bb_offset_x[offset], front_bb_offset_y[offset]);
1242 }
1243 }
1244 }
1245
1259 static void DrawTile_TunnelBridge(TileInfo *ti)
1260 {
1261 TransportType transport_type = GetTunnelBridgeTransportType(ti->tile);
1262 DiagDirection tunnelbridge_direction = GetTunnelBridgeDirection(ti->tile);
1263
1264 if (IsTunnel(ti->tile)) {
1265 /* Front view of tunnel bounding boxes:
1266 *
1267 * 122223 <- BB_Z_SEPARATOR
1268 * 1 3
1269 * 1 3 1,3 = empty helper BB
1270 * 1 3 2 = SpriteCombine of tunnel-roof and catenary (tram & elrail)
1271 *
1272 */
1273
1274 static const int _tunnel_BB[4][12] = {
1275 /* tunnnel-roof | Z-separator | tram-catenary
1276 * w h bb_x bb_y| x y w h |bb_x bb_y w h */
1277 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 }, // NE
1278 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 }, // SE
1279 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 }, // SW
1280 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 }, // NW
1281 };
1282 const int *BB_data = _tunnel_BB[tunnelbridge_direction];
1283
1284 bool catenary = false;
1285
1286 SpriteID image;
1287 SpriteID railtype_overlay = 0;
1288 if (transport_type == TRANSPORT_RAIL) {
1289 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1290 image = rti->base_sprites.tunnel;
1291 if (rti->UsesOverlay()) {
1292 /* Check if the railtype has custom tunnel portals. */
1293 railtype_overlay = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL_PORTAL);
1294 if (railtype_overlay != 0) image = SPR_RAILTYPE_TUNNEL_BASE; // Draw blank grass tunnel base.
1295 }
1296 } else {
1297 image = SPR_TUNNEL_ENTRY_REAR_ROAD;
1298 }
1299
1300 if (HasTunnelBridgeSnowOrDesert(ti->tile)) image += railtype_overlay != 0 ? 8 : 32;
1301
1302 image += tunnelbridge_direction * 2;
1303 DrawGroundSprite(image, PAL_NONE);
1304
1305 if (transport_type == TRANSPORT_ROAD) {
1306 RoadType road_rt = GetRoadTypeRoad(ti->tile);
1307 RoadType tram_rt = GetRoadTypeTram(ti->tile);
1308 const RoadTypeInfo *road_rti = road_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(road_rt);
1309 const RoadTypeInfo *tram_rti = tram_rt == INVALID_ROADTYPE ? nullptr : GetRoadTypeInfo(tram_rt);
1310 uint sprite_offset = DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? 1 : 0;
1311 bool draw_underlay = true;
1312
1313 /* Road underlay takes precedence over tram */
1314 if (road_rti != nullptr) {
1315 if (road_rti->UsesOverlay()) {
1316 SpriteID ground = GetCustomRoadSprite(road_rti, ti->tile, ROTSG_TUNNEL);
1317 if (ground != 0) {
1318 DrawGroundSprite(ground + tunnelbridge_direction, PAL_NONE);
1319 draw_underlay = false;
1320 }
1321 }
1322 } else {
1323 if (tram_rti->UsesOverlay()) {
1324 SpriteID ground = GetCustomRoadSprite(tram_rti, ti->tile, ROTSG_TUNNEL);
1325 if (ground != 0) {
1326 DrawGroundSprite(ground + tunnelbridge_direction, PAL_NONE);
1327 draw_underlay = false;
1328 }
1329 }
1330 }
1331
1332 DrawRoadOverlays(ti, PAL_NONE, road_rti, tram_rti, sprite_offset, sprite_offset, draw_underlay);
1333
1334 /* Road catenary takes precedence over tram */
1335 SpriteID catenary_sprite_base = 0;
1336 if (road_rti != nullptr && HasRoadCatenaryDrawn(road_rt)) {
1337 catenary_sprite_base = GetCustomRoadSprite(road_rti, ti->tile, ROTSG_CATENARY_FRONT);
1338 if (catenary_sprite_base == 0) {
1339 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1340 } else {
1341 catenary_sprite_base += 19;
1342 }
1343 } else if (tram_rti != nullptr && HasRoadCatenaryDrawn(tram_rt)) {
1344 catenary_sprite_base = GetCustomRoadSprite(tram_rti, ti->tile, ROTSG_CATENARY_FRONT);
1345 if (catenary_sprite_base == 0) {
1346 catenary_sprite_base = SPR_TRAMWAY_TUNNEL_WIRES;
1347 } else {
1348 catenary_sprite_base += 19;
1349 }
1350 }
1351
1352 if (catenary_sprite_base != 0) {
1353 catenary = true;
1354 StartSpriteCombine();
1355 AddSortableSpriteToDraw(catenary_sprite_base + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, BB_data[10], BB_data[11], TILE_HEIGHT, ti->z, IsTransparencySet(TO_CATENARY), BB_data[8], BB_data[9], BB_Z_SEPARATOR);
1356 }
1357 } else {
1358 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1359 if (rti->UsesOverlay()) {
1360 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL);
1361 if (surface != 0) DrawGroundSprite(surface + tunnelbridge_direction, PAL_NONE);
1362 }
1363
1364 /* PBS debugging, draw reserved tracks darker */
1365 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1366 if (rti->UsesOverlay()) {
1367 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1368 DrawGroundSprite(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH);
1369 } else {
1370 DrawGroundSprite(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
1371 }
1372 }
1373
1374 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1375 /* Maybe draw pylons on the entry side */
1376 DrawRailCatenary(ti);
1377
1378 catenary = true;
1379 StartSpriteCombine();
1380 /* Draw wire above the ramp */
1381 DrawRailCatenaryOnTunnel(ti);
1382 }
1383 }
1384
1385 if (railtype_overlay != 0 && !catenary) StartSpriteCombine();
1386
1387 AddSortableSpriteToDraw(image + 1, PAL_NONE, ti->x + TILE_SIZE - 1, ti->y + TILE_SIZE - 1, BB_data[0], BB_data[1], TILE_HEIGHT, ti->z, false, BB_data[2], BB_data[3], BB_Z_SEPARATOR);
1388 /* Draw railtype tunnel portal overlay if defined. */
1389 if (railtype_overlay != 0) AddSortableSpriteToDraw(railtype_overlay + tunnelbridge_direction, PAL_NONE, ti->x + TILE_SIZE - 1, ti->y + TILE_SIZE - 1, BB_data[0], BB_data[1], TILE_HEIGHT, ti->z, false, BB_data[2], BB_data[3], BB_Z_SEPARATOR);
1390
1391 if (catenary || railtype_overlay != 0) EndSpriteCombine();
1392
1393 /* Add helper BB for sprite sorting that separates the tunnel from things beside of it. */
1394 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x, ti->y, BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
1395 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x + BB_data[4], ti->y + BB_data[5], BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
1396
1397 DrawBridgeMiddle(ti);
1398 } else { // IsBridge(ti->tile)
1399 const PalSpriteID *psid;
1400 int base_offset;
1401 bool ice = HasTunnelBridgeSnowOrDesert(ti->tile);
1402
1403 if (transport_type == TRANSPORT_RAIL) {
1404 base_offset = GetRailTypeInfo(GetRailType(ti->tile))->bridge_offset;
1405 assert(base_offset != 8); // This one is used for roads
1406 } else {
1407 base_offset = 8;
1408 }
1409
1410 /* as the lower 3 bits are used for other stuff, make sure they are clear */
1411 assert( (base_offset & 0x07) == 0x00);
1412
1413 DrawFoundation(ti, GetBridgeFoundation(ti->tileh, DiagDirToAxis(tunnelbridge_direction)));
1414
1415 /* HACK Wizardry to convert the bridge ramp direction into a sprite offset */
1416 base_offset += (6 - tunnelbridge_direction) % 4;
1417
1418 /* Table number BRIDGE_PIECE_HEAD always refers to the bridge heads for any bridge type */
1419 if (transport_type != TRANSPORT_WATER) {
1420 if (ti->tileh == SLOPE_FLAT) base_offset += 4; // sloped bridge head
1421 psid = &GetBridgeSpriteTable(GetBridgeType(ti->tile), BRIDGE_PIECE_HEAD)[base_offset];
1422 } else {
1423 psid = _aqueduct_sprites + base_offset;
1424 }
1425
1426 if (!ice) {
1427 TileIndex next = ti->tile + TileOffsByDiagDir(tunnelbridge_direction);
1428 if (ti->tileh != SLOPE_FLAT && ti->z == 0 && HasTileWaterClass(next) && GetWaterClass(next) == WATER_CLASS_SEA) {
1429 DrawShoreTile(ti->tileh);
1430 } else {
1431 DrawClearLandTile(ti, 3);
1432 }
1433 } else {
1434 DrawGroundSprite(SPR_FLAT_SNOW_DESERT_TILE + SlopeToSpriteOffset(ti->tileh), PAL_NONE);
1435 }
1436
1437 /* draw ramp */
1438
1439 /* Draw Trambits and PBS Reservation as SpriteCombine */
1440 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1441
1442 /* HACK set the height of the BB of a sloped ramp to 1 so a vehicle on
1443 * it doesn't disappear behind it
1444 */
1445 /* Bridge heads are drawn solid no matter how invisibility/transparency is set */
1446 AddSortableSpriteToDraw(psid->sprite, psid->pal, ti->x, ti->y, 16, 16, ti->tileh == SLOPE_FLAT ? 0 : 8, ti->z);
1447
1448 if (transport_type == TRANSPORT_ROAD) {
1449 uint offset = tunnelbridge_direction;
1450 int z = ti->z;
1451 if (ti->tileh != SLOPE_FLAT) {
1452 offset = (offset + 1) & 1;
1453 z += TILE_HEIGHT;
1454 } else {
1455 offset += 2;
1456 }
1457
1458 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1459 DrawBridgeRoadBits(ti->tile, ti->x, ti->y, z, offset, true);
1460
1461 EndSpriteCombine();
1462 } else if (transport_type == TRANSPORT_RAIL) {
1463 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
1464 if (rti->UsesOverlay()) {
1465 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_BRIDGE);
1466 if (surface != 0) {
1467 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1468 AddSortableSpriteToDraw(surface + ((DiagDirToAxis(tunnelbridge_direction) == AXIS_X) ? RTBO_X : RTBO_Y), PAL_NONE, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1469 } else {
1470 AddSortableSpriteToDraw(surface + RTBO_SLOPE + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, 16, 16, 8, ti->z);
1471 }
1472 }
1473 /* Don't fallback to non-overlay sprite -- the spec states that
1474 * if an overlay is present then the bridge surface must be
1475 * present. */
1476 }
1477
1478 /* PBS debugging, draw reserved tracks darker */
1479 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
1480 if (rti->UsesOverlay()) {
1481 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1482 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1483 AddSortableSpriteToDraw(overlay + RTO_X + DiagDirToAxis(tunnelbridge_direction), PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1484 } else {
1485 AddSortableSpriteToDraw(overlay + RTO_SLOPE_NE + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
1486 }
1487 } else {
1488 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
1489 AddSortableSpriteToDraw(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, ti->z + 8);
1490 } else {
1491 AddSortableSpriteToDraw(rti->base_sprites.single_sloped + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
1492 }
1493 }
1494 }
1495
1496 EndSpriteCombine();
1497 if (HasRailCatenaryDrawn(GetRailType(ti->tile))) {
1498 DrawRailCatenary(ti);
1499 }
1500 }
1501
1502 DrawBridgeMiddle(ti);
1503 }
1504 }
1505
1506
1525 static BridgePieces CalcBridgePiece(uint north, uint south)
1526 {
1527 if (north == 1) {
1528 return BRIDGE_PIECE_NORTH;
1529 } else if (south == 1) {
1530 return BRIDGE_PIECE_SOUTH;
1531 } else if (north < south) {
1532 return north & 1 ? BRIDGE_PIECE_INNER_SOUTH : BRIDGE_PIECE_INNER_NORTH;
1533 } else if (north > south) {
1534 return south & 1 ? BRIDGE_PIECE_INNER_NORTH : BRIDGE_PIECE_INNER_SOUTH;
1535 } else {
1536 return north & 1 ? BRIDGE_PIECE_MIDDLE_EVEN : BRIDGE_PIECE_MIDDLE_ODD;
1537 }
1538 }
1539
1544 void DrawBridgeMiddle(const TileInfo *ti)
1545 {
1546 /* Sectional view of bridge bounding boxes:
1547 *
1548 * 1 2 1,2 = SpriteCombine of Bridge front/(back&floor) and RoadCatenary
1549 * 1 2 3 = empty helper BB
1550 * 1 7 2 4,5 = pillars under higher bridges
1551 * 1 6 88888 6 2 6 = elrail-pylons
1552 * 1 6 88888 6 2 7 = elrail-wire
1553 * 1 6 88888 6 2 <- TILE_HEIGHT 8 = rail-vehicle on bridge
1554 * 3333333333333 <- BB_Z_SEPARATOR
1555 * <- unused
1556 * 4 5 <- BB_HEIGHT_UNDER_BRIDGE
1557 * 4 5
1558 * 4 5
1559 *
1560 */
1561
1562 if (!IsBridgeAbove(ti->tile)) return;
1563
1564 TileIndex rampnorth = GetNorthernBridgeEnd(ti->tile);
1565 TileIndex rampsouth = GetSouthernBridgeEnd(ti->tile);
1566 TransportType transport_type = GetTunnelBridgeTransportType(rampsouth);
1567
1568 Axis axis = GetBridgeAxis(ti->tile);
1569 BridgePieces piece = CalcBridgePiece(
1570 GetTunnelBridgeLength(ti->tile, rampnorth) + 1,
1571 GetTunnelBridgeLength(ti->tile, rampsouth) + 1
1572 );
1573
1574 const PalSpriteID *psid;
1575 bool drawfarpillar;
1576 if (transport_type != TRANSPORT_WATER) {
1577 BridgeType type = GetBridgeType(rampsouth);
1578 drawfarpillar = !HasBit(GetBridgeSpec(type)->flags, 0);
1579
1580 uint base_offset;
1581 if (transport_type == TRANSPORT_RAIL) {
1582 base_offset = GetRailTypeInfo(GetRailType(rampsouth))->bridge_offset;
1583 } else {
1584 base_offset = 8;
1585 }
1586
1587 psid = base_offset + GetBridgeSpriteTable(type, piece);
1588 } else {
1589 drawfarpillar = true;
1590 psid = _aqueduct_sprites;
1591 }
1592
1593 if (axis != AXIS_X) psid += 4;
1594
1595 int x = ti->x;
1596 int y = ti->y;
1597 uint bridge_z = GetBridgePixelHeight(rampsouth);
1598 int z = bridge_z - BRIDGE_Z_START;
1599
1600 /* Add a bounding box that separates the bridge from things below it. */
1601 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, x, y, 16, 16, 1, bridge_z - TILE_HEIGHT + BB_Z_SEPARATOR);
1602
1603 /* Draw Trambits as SpriteCombine */
1604 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
1605
1606 /* Draw floor and far part of bridge*/
1607 if (!IsInvisibilitySet(TO_BRIDGES)) {
1608 if (axis == AXIS_X) {
1609 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 1, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
1610 } else {
1611 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 1, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
1612 }
1613 }
1614
1615 psid++;
1616
1617 if (transport_type == TRANSPORT_ROAD) {
1618 /* DrawBridgeRoadBits() calls EndSpriteCombine() and StartSpriteCombine() */
1619 DrawBridgeRoadBits(rampsouth, x, y, bridge_z, axis ^ 1, false);
1620 } else if (transport_type == TRANSPORT_RAIL) {
1621 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(rampsouth));
1622 if (rti->UsesOverlay() && !IsInvisibilitySet(TO_BRIDGES)) {
1623 SpriteID surface = GetCustomRailSprite(rti, rampsouth, RTSG_BRIDGE, TCX_ON_BRIDGE);
1624 if (surface != 0) {
1625 AddSortableSpriteToDraw(surface + axis, PAL_NONE, x, y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1626 }
1627 }
1628
1629 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && !IsInvisibilitySet(TO_BRIDGES) && HasTunnelBridgeReservation(rampnorth)) {
1630 if (rti->UsesOverlay()) {
1631 SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
1632 AddSortableSpriteToDraw(overlay + RTO_X + axis, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1633 } else {
1634 AddSortableSpriteToDraw(axis == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH, ti->x, ti->y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
1635 }
1636 }
1637
1638 EndSpriteCombine();
1639
1640 if (HasRailCatenaryDrawn(GetRailType(rampsouth))) {
1641 DrawRailCatenaryOnBridge(ti);
1642 }
1643 }
1644
1645 /* draw roof, the component of the bridge which is logically between the vehicle and the camera */
1646 if (!IsInvisibilitySet(TO_BRIDGES)) {
1647 if (axis == AXIS_X) {
1648 y += 12;
1649 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 4, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 3, BRIDGE_Z_START);
1650 } else {
1651 x += 12;
1652 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 4, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 3, 0, BRIDGE_Z_START);
1653 }
1654 }
1655
1656 /* Draw TramFront as SpriteCombine */
1657 if (transport_type == TRANSPORT_ROAD) EndSpriteCombine();
1658
1659 /* Do not draw anything more if bridges are invisible */
1660 if (IsInvisibilitySet(TO_BRIDGES)) return;
1661
1662 psid++;
1663 DrawBridgePillars(psid, ti, axis, drawfarpillar, x, y, z);
1664 }
1665
1666
1667 static int GetSlopePixelZ_TunnelBridge(TileIndex tile, uint x, uint y, bool ground_vehicle)
1668 {
1669 int z;
1670 Slope tileh = GetTilePixelSlope(tile, &z);
1671
1672 x &= 0xF;
1673 y &= 0xF;
1674
1675 if (IsTunnel(tile)) {
1676 /* In the tunnel entrance? */
1677 if (ground_vehicle) return z;
1678 } else { // IsBridge(tile)
1679 DiagDirection dir = GetTunnelBridgeDirection(tile);
1680 z += ApplyPixelFoundationToSlope(GetBridgeFoundation(tileh, DiagDirToAxis(dir)), &tileh);
1681
1682 /* On the bridge ramp? */
1683 if (ground_vehicle) {
1684 if (tileh != SLOPE_FLAT) return z + TILE_HEIGHT;
1685
1686 switch (dir) {
1687 default: NOT_REACHED();
1688 case DIAGDIR_NE: tileh = SLOPE_NE; break;
1689 case DIAGDIR_SE: tileh = SLOPE_SE; break;
1690 case DIAGDIR_SW: tileh = SLOPE_SW; break;
1691 case DIAGDIR_NW: tileh = SLOPE_NW; break;
1692 }
1693 }
1694 }
1695
1696 return z + GetPartialPixelZ(x, y, tileh);
1697 }
1698
1699 static Foundation GetFoundation_TunnelBridge(TileIndex tile, Slope tileh)
1700 {
1701 return IsTunnel(tile) ? FOUNDATION_NONE : GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(tile)));
1702 }
1703
1704 static void GetTileDesc_TunnelBridge(TileIndex tile, TileDesc *td)
1705 {
1706 TransportType tt = GetTunnelBridgeTransportType(tile);
1707
1708 if (IsTunnel(tile)) {
1709 td->str = (tt == TRANSPORT_RAIL) ? STR_LAI_TUNNEL_DESCRIPTION_RAILROAD : STR_LAI_TUNNEL_DESCRIPTION_ROAD;
1710 } else { // IsBridge(tile)
1711 td->str = (tt == TRANSPORT_WATER) ? STR_LAI_BRIDGE_DESCRIPTION_AQUEDUCT : GetBridgeSpec(GetBridgeType(tile))->transport_name[tt];
1712 }
1713 td->owner[0] = GetTileOwner(tile);
1714
1715 Owner road_owner = INVALID_OWNER;
1716 Owner tram_owner = INVALID_OWNER;
1717 RoadType road_rt = GetRoadTypeRoad(tile);
1718 RoadType tram_rt = GetRoadTypeTram(tile);
1719 if (road_rt != INVALID_ROADTYPE) {
1720 const RoadTypeInfo *rti = GetRoadTypeInfo(road_rt);
1721 td->roadtype = rti->strings.name;
1722 td->road_speed = rti->max_speed / 2;
1723 road_owner = GetRoadOwner(tile, RTT_ROAD);
1724 }
1725 if (tram_rt != INVALID_ROADTYPE) {
1726 const RoadTypeInfo *rti = GetRoadTypeInfo(tram_rt);
1727 td->tramtype = rti->strings.name;
1728 td->tram_speed = rti->max_speed / 2;
1729 tram_owner = GetRoadOwner(tile, RTT_TRAM);
1730 }
1731
1732 /* Is there a mix of owners? */
1733 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
1734 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
1735 uint i = 1;
1736 if (road_owner != INVALID_OWNER) {
1737 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
1738 td->owner[i] = road_owner;
1739 i++;
1740 }
1741 if (tram_owner != INVALID_OWNER) {
1742 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
1743 td->owner[i] = tram_owner;
1744 }
1745 }
1746
1747 if (tt == TRANSPORT_RAIL) {
1748 const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
1749 td->rail_speed = rti->max_speed;
1750 td->railtype = rti->strings.name;
1751
1752 if (!IsTunnel(tile)) {
1753 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1754 /* rail speed special-cases 0 as unlimited, hides display of limit etc. */
1755 if (spd == UINT16_MAX) spd = 0;
1756 if (td->rail_speed == 0 || spd < td->rail_speed) {
1757 td->rail_speed = spd;
1758 }
1759 }
1760 } else if (tt == TRANSPORT_ROAD && !IsTunnel(tile)) {
1761 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1762 /* road speed special-cases 0 as unlimited, hides display of limit etc. */
1763 if (spd == UINT16_MAX) spd = 0;
1764 if (road_rt != INVALID_ROADTYPE && (td->road_speed == 0 || spd < td->road_speed)) td->road_speed = spd;
1765 if (tram_rt != INVALID_ROADTYPE && (td->tram_speed == 0 || spd < td->tram_speed)) td->tram_speed = spd;
1766 }
1767 }
1768
1769
1770 static void TileLoop_TunnelBridge(TileIndex tile)
1771 {
1772 bool snow_or_desert = HasTunnelBridgeSnowOrDesert(tile);
1773 switch (_settings_game.game_creation.landscape) {
1774 case LT_ARCTIC: {
1775 /* As long as we do not have a snow density, we want to use the density
1776 * from the entry edge. For tunnels this is the lowest point for bridges the highest point.
1777 * (Independent of foundations) */
1778 int z = IsBridge(tile) ? GetTileMaxZ(tile) : GetTileZ(tile);
1779 if (snow_or_desert != (z > GetSnowLine())) {
1780 SetTunnelBridgeSnowOrDesert(tile, !snow_or_desert);
1781 MarkTileDirtyByTile(tile);
1782 }
1783 break;
1784 }
1785
1786 case LT_TROPIC:
1787 if (GetTropicZone(tile) == TROPICZONE_DESERT && !snow_or_desert) {
1788 SetTunnelBridgeSnowOrDesert(tile, true);
1789 MarkTileDirtyByTile(tile);
1790 }
1791 break;
1792
1793 default:
1794 break;
1795 }
1796 }
1797
1798 static TrackStatus GetTileTrackStatus_TunnelBridge(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
1799 {
1800 TransportType transport_type = GetTunnelBridgeTransportType(tile);
1801 if (transport_type != mode || (transport_type == TRANSPORT_ROAD && !HasTileRoadType(tile, (RoadTramType)sub_mode))) return 0;
1802
1803 DiagDirection dir = GetTunnelBridgeDirection(tile);
1804 if (side != INVALID_DIAGDIR && side != ReverseDiagDir(dir)) return 0;
1805 return CombineTrackStatus(TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir)), TRACKDIR_BIT_NONE);
1806 }
1807
1808 static void ChangeTileOwner_TunnelBridge(TileIndex tile, Owner old_owner, Owner new_owner)
1809 {
1810 TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
1811 /* Set number of pieces to zero if it's the southern tile as we
1812 * don't want to update the infrastructure counts twice. */
1813 uint num_pieces = tile < other_end ? (GetTunnelBridgeLength(tile, other_end) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR : 0;
1814
1815 for (RoadTramType rtt : _roadtramtypes) {
1816 /* Update all roadtypes, no matter if they are present */
1817 if (GetRoadOwner(tile, rtt) == old_owner) {
1818 RoadType rt = GetRoadType(tile, rtt);
1819 if (rt != INVALID_ROADTYPE) {
1820 /* Update company infrastructure counts. A full diagonal road tile has two road bits.
1821 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1822 Company::Get(old_owner)->infrastructure.road[rt] -= num_pieces * 2;
1823 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += num_pieces * 2;
1824 }
1825
1826 SetRoadOwner(tile, rtt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
1827 }
1828 }
1829
1830 if (!IsTileOwner(tile, old_owner)) return;
1831
1832 /* Update company infrastructure counts for rail and water as well.
1833 * No need to dirty windows here, we'll redraw the whole screen anyway. */
1834 TransportType tt = GetTunnelBridgeTransportType(tile);
1835 Company *old = Company::Get(old_owner);
1836 if (tt == TRANSPORT_RAIL) {
1837 old->infrastructure.rail[GetRailType(tile)] -= num_pieces;
1838 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.rail[GetRailType(tile)] += num_pieces;
1839 } else if (tt == TRANSPORT_WATER) {
1840 old->infrastructure.water -= num_pieces;
1841 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.water += num_pieces;
1842 }
1843
1844 if (new_owner != INVALID_OWNER) {
1845 SetTileOwner(tile, new_owner);
1846 } else {
1847 if (tt == TRANSPORT_RAIL) {
1848 /* Since all of our vehicles have been removed, it is safe to remove the rail
1849 * bridge / tunnel. */
1850 [[maybe_unused]] CommandCost ret = Command<CMD_LANDSCAPE_CLEAR>::Do(DC_EXEC | DC_BANKRUPT, tile);
1851 assert(ret.Succeeded());
1852 } else {
1853 /* In any other case, we can safely reassign the ownership to OWNER_NONE. */
1854 SetTileOwner(tile, OWNER_NONE);
1855 }
1856 }
1857 }
1858
1871 template <typename T>
1872 static void PrepareToEnterBridge(T *gv)
1873 {
1874 if (HasBit(gv->gv_flags, GVF_GOINGUP_BIT)) {
1875 gv->z_pos++;
1876 ClrBit(gv->gv_flags, GVF_GOINGUP_BIT);
1877 } else {
1878 ClrBit(gv->gv_flags, GVF_GOINGDOWN_BIT);
1879 }
1880 }
1881
1887 static const byte TUNNEL_SOUND_FRAME = 1;
1888
1897 extern const byte _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12};
1898
1899 static VehicleEnterTileStatus VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
1900 {
1901 int z = GetSlopePixelZ(x, y, true) - v->z_pos;
1902
1903 if (abs(z) > 2) return VETSB_CANNOT_ENTER;
1904 /* Direction into the wormhole */
1905 const DiagDirection dir = GetTunnelBridgeDirection(tile);
1906 /* Direction of the vehicle */
1907 const DiagDirection vdir = DirToDiagDir(v->direction);
1908 /* New position of the vehicle on the tile */
1909 byte pos = (DiagDirToAxis(vdir) == AXIS_X ? x : y) & TILE_UNIT_MASK;
1910 /* Number of units moved by the vehicle since entering the tile */
1911 byte frame = (vdir == DIAGDIR_NE || vdir == DIAGDIR_NW) ? TILE_SIZE - 1 - pos : pos;
1912
1913 if (IsTunnel(tile)) {
1914 if (v->type == VEH_TRAIN) {
1915 Train *t = Train::From(v);
1916
1917 if (t->track != TRACK_BIT_WORMHOLE && dir == vdir) {
1918 if (t->IsFrontEngine() && frame == TUNNEL_SOUND_FRAME) {
1919 if (!PlayVehicleSound(t, VSE_TUNNEL) && RailVehInfo(t->engine_type)->engclass == 0) {
1920 SndPlayVehicleFx(SND_05_TRAIN_THROUGH_TUNNEL, v);
1921 }
1922 return VETSB_CONTINUE;
1923 }
1924 if (frame == _tunnel_visibility_frame[dir]) {
1925 t->tile = tile;
1926 t->track = TRACK_BIT_WORMHOLE;
1927 t->vehstatus |= VS_HIDDEN;
1928 return VETSB_ENTERED_WORMHOLE;
1929 }
1930 }
1931
1932 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
1933 /* We're at the tunnel exit ?? */
1934 t->tile = tile;
1935 t->track = DiagDirToDiagTrackBits(vdir);
1936 assert(t->track);
1937 t->vehstatus &= ~VS_HIDDEN;
1938 return VETSB_ENTERED_WORMHOLE;
1939 }
1940 } else if (v->type == VEH_ROAD) {
1941 RoadVehicle *rv = RoadVehicle::From(v);
1942
1943 /* Enter tunnel? */
1944 if (rv->state != RVSB_WORMHOLE && dir == vdir) {
1945 if (frame == _tunnel_visibility_frame[dir]) {
1946 /* Frame should be equal to the next frame number in the RV's movement */
1947 assert(frame == rv->frame + 1);
1948 rv->tile = tile;
1949 rv->state = RVSB_WORMHOLE;
1950 rv->vehstatus |= VS_HIDDEN;
1951 return VETSB_ENTERED_WORMHOLE;
1952 } else {
1953 return VETSB_CONTINUE;
1954 }
1955 }
1956
1957 /* We're at the tunnel exit ?? */
1958 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
1959 rv->tile = tile;
1960 rv->state = DiagDirToDiagTrackdir(vdir);
1961 rv->frame = frame;
1962 rv->vehstatus &= ~VS_HIDDEN;
1963 return VETSB_ENTERED_WORMHOLE;
1964 }
1965 }
1966 } else { // IsBridge(tile)
1967 if (v->type != VEH_SHIP) {
1968 /* modify speed of vehicle */
1969 uint16_t spd = GetBridgeSpec(GetBridgeType(tile))->speed;
1970
1971 if (v->type == VEH_ROAD) spd *= 2;
1972 Vehicle *first = v->First();
1973 first->cur_speed = std::min(first->cur_speed, spd);
1974 }
1975
1976 if (vdir == dir) {
1977 /* Vehicle enters bridge at the last frame inside this tile. */
1978 if (frame != TILE_SIZE - 1) return VETSB_CONTINUE;
1979 switch (v->type) {
1980 case VEH_TRAIN: {
1981 Train *t = Train::From(v);
1982 t->track = TRACK_BIT_WORMHOLE;
1983 PrepareToEnterBridge(t);
1984 break;
1985 }
1986
1987 case VEH_ROAD: {
1988 RoadVehicle *rv = RoadVehicle::From(v);
1989 rv->state = RVSB_WORMHOLE;
1990 PrepareToEnterBridge(rv);
1991 break;
1992 }
1993
1994 case VEH_SHIP:
1995 Ship::From(v)->state = TRACK_BIT_WORMHOLE;
1996 break;
1997
1998 default: NOT_REACHED();
1999 }
2000 return VETSB_ENTERED_WORMHOLE;
2001 } else if (vdir == ReverseDiagDir(dir)) {
2002 v->tile = tile;
2003 switch (v->type) {
2004 case VEH_TRAIN: {
2005 Train *t = Train::From(v);
2006 if (t->track == TRACK_BIT_WORMHOLE) {
2007 t->track = DiagDirToDiagTrackBits(vdir);
2008 return VETSB_ENTERED_WORMHOLE;
2009 }
2010 break;
2011 }
2012
2013 case VEH_ROAD: {
2014 RoadVehicle *rv = RoadVehicle::From(v);
2015 if (rv->state == RVSB_WORMHOLE) {
2016 rv->state = DiagDirToDiagTrackdir(vdir);
2017 rv->frame = 0;
2018 return VETSB_ENTERED_WORMHOLE;
2019 }
2020 break;
2021 }
2022
2023 case VEH_SHIP: {
2024 Ship *ship = Ship::From(v);
2025 if (ship->state == TRACK_BIT_WORMHOLE) {
2026 ship->state = DiagDirToDiagTrackBits(vdir);
2027 return VETSB_ENTERED_WORMHOLE;
2028 }
2029 break;
2030 }
2031
2032 default: NOT_REACHED();
2033 }
2034 }
2035 }
2036 return VETSB_CONTINUE;
2037 }
2038
2039 static CommandCost TerraformTile_TunnelBridge(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
2040 {
2041 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && IsBridge(tile) && GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) {
2042 DiagDirection direction = GetTunnelBridgeDirection(tile);
2043 Axis axis = DiagDirToAxis(direction);
2044 CommandCost res;
2045 int z_old;
2046 Slope tileh_old = GetTileSlope(tile, &z_old);
2047
2048 /* Check if new slope is valid for bridges in general (so we can safely call GetBridgeFoundation()) */
2049 if ((direction == DIAGDIR_NW) || (direction == DIAGDIR_NE)) {
2050 CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, &tileh_old, &z_old);
2051 res = CheckBridgeSlope(BRIDGE_PIECE_SOUTH, axis, &tileh_new, &z_new);
2052 } else {
2053 CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, &tileh_old, &z_old);
2054 res = CheckBridgeSlope(BRIDGE_PIECE_NORTH, axis, &tileh_new, &z_new);
2055 }
2056
2057 /* Surface slope is valid and remains unchanged? */
2058 if (res.Succeeded() && (z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
2059 }
2060
2061 return Command<CMD_LANDSCAPE_CLEAR>::Do(flags, tile);
2062 }
2063
2064 extern const TileTypeProcs _tile_type_tunnelbridge_procs = {
2065 DrawTile_TunnelBridge, // draw_tile_proc
2066 GetSlopePixelZ_TunnelBridge, // get_slope_z_proc
2067 ClearTile_TunnelBridge, // clear_tile_proc
2068 nullptr, // add_accepted_cargo_proc
2069 GetTileDesc_TunnelBridge, // get_tile_desc_proc
2070 GetTileTrackStatus_TunnelBridge, // get_tile_track_status_proc
2071 nullptr, // click_tile_proc
2072 nullptr, // animate_tile_proc
2073 TileLoop_TunnelBridge, // tile_loop_proc
2074 ChangeTileOwner_TunnelBridge, // change_tile_owner_proc
2075 nullptr, // add_produced_cargo_proc
2076 VehicleEnter_TunnelBridge, // vehicle_enter_tile_proc
2077 GetFoundation_TunnelBridge, // get_foundation_proc
2078 TerraformTile_TunnelBridge, // terraform_tile_proc
2079 };
BRIDGE_Z_START
static const int BRIDGE_Z_START
Z position of the bridge sprites relative to bridge height (downwards)
Definition: tunnelbridge_cmd.cpp:56
RoadVehicle
Buses, trucks and trams belong to this class.
Definition: roadveh.h:106
DoClearTunnel
static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
Remove a tunnel from the game, update town rating, etc.
Definition: tunnelbridge_cmd.cpp:848
TileY
static debug_inline uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:437
TileInfo::z
int z
Height.
Definition: tile_cmd.h:48
MP_CLEAR
@ MP_CLEAR
A tile without any structures, i.e. grass, rocks, farm fields etc.
Definition: tile_type.h:48
Vehicle::IsFrontEngine
debug_inline bool IsFrontEngine() const
Check if the vehicle is a front engine.
Definition: vehicle_base.h:931
SPRITE_MASK
@ SPRITE_MASK
The mask to for the main sprite.
Definition: sprites.h:1552
TRACK_BIT_WORMHOLE
@ TRACK_BIT_WORMHOLE
Bitflag for a wormhole (used for tunnels)
Definition: track_type.h:52
DIAGDIR_SE
@ DIAGDIR_SE
Southeast.
Definition: direction_type.h:76
SLOPE_SE
@ SLOPE_SE
south and east corner are raised
Definition: slope_type.h:57
CompanyProperties::is_ai
bool is_ai
If true, the company is (also) controlled by the computer (a NoAI program).
Definition: company_base.h:95
tunnelbridge.h
VETSB_CANNOT_ENTER
@ VETSB_CANNOT_ENTER
The vehicle cannot enter the tile.
Definition: tile_cmd.h:38
TROPICZONE_DESERT
@ TROPICZONE_DESERT
Tile is desert.
Definition: tile_type.h:78
RoadTypeInfo
Definition: road.h:78
RoadVehicle::state
byte state
Definition: roadveh.h:108
TO_CATENARY
@ TO_CATENARY
catenary
Definition: transparency.h:30
sound_func.h
Cheats::crossing_tunnels
Cheat crossing_tunnels
allow tunnels that cross each other
Definition: cheat_type.h:30
AXIS_Y
@ AXIS_Y
The y axis.
Definition: direction_type.h:118
Cheats::magic_bulldozer
Cheat magic_bulldozer
dynamite industries, objects
Definition: cheat_type.h:27
Pool::PoolItem<&_company_pool >::Get
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:335
GetOtherBridgeEnd
TileIndex GetOtherBridgeEnd(TileIndex tile)
Starting at one bridge end finds the other bridge end.
Definition: bridge_map.cpp:59
water.h
GetTileMaxZ
int GetTileMaxZ(TileIndex t)
Get top height of the tile inside the map.
Definition: tile_map.cpp:141
ResetBridges
void ResetBridges()
Reset the data been eventually changed by the grf loaded.
Definition: tunnelbridge_cmd.cpp:86
train.h
BB_Z_SEPARATOR
static const uint BB_Z_SEPARATOR
Separates the bridge/tunnel from the things under/above it.
Definition: viewport_type.h:85
ValParamRailType
bool ValParamRailType(const RailType rail)
Validate functions for rail building.
Definition: rail.cpp:206
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:173
command_func.h
VSE_TUNNEL
@ VSE_TUNNEL
Train entering a tunnel.
Definition: newgrf_sound.h:20
ObjectSpec
Allow incrementing of ObjectClassID variables.
Definition: newgrf_object.h:60
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:644
GetTunnelBridgeLength
uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
Calculates the length of a tunnel or a bridge (without end tiles)
Definition: tunnelbridge.h:25
Swap
constexpr void Swap(T &a, T &b)
Type safe swap operation.
Definition: math_func.hpp:283
Pool::PoolItem<&_company_pool >::GetIfValid
static Titem * GetIfValid(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:346
CMD_ERROR
static const CommandCost CMD_ERROR
Define a default return value for a failed command.
Definition: command_func.h:28
FlatteningFoundation
Foundation FlatteningFoundation(Slope s)
Returns the foundation needed to flatten a slope.
Definition: slope_func.h:369
GetRailTypeInfo
const RailTypeInfo * GetRailTypeInfo(RailType railtype)
Returns a pointer to the Railtype information for a given railtype.
Definition: rail.h:307
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:3744
TileInfo
Tile information, used while rendering the tile.
Definition: tile_cmd.h:43
RATING_TUNNEL_BRIDGE_MINIMUM
@ RATING_TUNNEL_BRIDGE_MINIMUM
minimum rating after removing tunnel or bridge
Definition: town_type.h:58
GetWaterClass
WaterClass GetWaterClass(Tile t)
Get the water class at a tile.
Definition: water_map.h:115
GameCreationSettings::landscape
byte landscape
the landscape we're currently in
Definition: settings_type.h:356
TileDesc::railtype
StringID railtype
Type of rail on the tile.
Definition: tile_cmd.h:64
Map::MaxX
static debug_inline uint MaxX()
Gets the maximum X coordinate within the map, including MP_VOID.
Definition: map_func.h:297
terraform_cmd.h
RailTypeInfo::tunnel
SpriteID tunnel
tunnel sprites base
Definition: rail.h:145
company_base.h
HasBridgeFlatRamp
bool HasBridgeFlatRamp(Slope tileh, Axis axis)
Determines if the track on a bridge ramp is flat or goes up/down.
Definition: tunnelbridge_cmd.cpp:145
tunnelbridge_map.h
timer_game_calendar.h
RailClearCost
Money RailClearCost(RailType railtype)
Returns the 'cost' of clearing the specified railtype.
Definition: rail.h:386
TileDesc::owner
Owner owner[4]
Name of the owner(s)
Definition: tile_cmd.h:55
Axis
Axis
Allow incrementing of DiagDirDiff variables.
Definition: direction_type.h:116
SLOPE_NW
@ SLOPE_NW
north and west corner are raised
Definition: slope_type.h:55
company_gui.h
IsPlainRail
static debug_inline bool IsPlainRail(Tile t)
Returns whether this is plain rails, with or without signals.
Definition: rail_map.h:49
RailTypeInfo::bridge_offset
SpriteID bridge_offset
Bridge offset.
Definition: rail.h:196
elrail_func.h
SND_05_TRAIN_THROUGH_TUNNEL
@ SND_05_TRAIN_THROUGH_TUNNEL
3 == 0x03 Train enters tunnel: steam engine
Definition: sound_type.h:42
GetRoadside
Roadside GetRoadside(Tile tile)
Get the decorations of a road.
Definition: road_map.h:493
Price
Price
Enumeration of all base prices for use with Prices.
Definition: economy_type.h:89
InclinedFoundation
Foundation InclinedFoundation(Axis axis)
Returns the along a specific axis inclined foundation.
Definition: slope_func.h:380
DrawPillar
static void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
Draw a single pillar sprite.
Definition: tunnelbridge_cmd.cpp:1040
TileDesc::road_speed
uint16_t road_speed
Speed limit of road (bridges and track)
Definition: tile_cmd.h:67
SetTunnelBridgeReservation
void SetTunnelBridgeReservation(Tile t, bool b)
Set the reservation state of the rail tunnel/bridge.
Definition: tunnelbridge_map.h:104
Vehicle::vehstatus
byte vehstatus
Status.
Definition: vehicle_base.h:348
OBJECT_FLAG_ALLOW_UNDER_BRIDGE
@ OBJECT_FLAG_ALLOW_UNDER_BRIDGE
Object can built under a bridge.
Definition: newgrf_object.h:37
DIAGDIR_END
@ DIAGDIR_END
Used for iterations.
Definition: direction_type.h:79
AutoslopeEnabled
bool AutoslopeEnabled()
Tests if autoslope is enabled for _current_company.
Definition: autoslope.h:44
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:48
Pool::PoolItem::index
Tindex index
Index of this pool item.
Definition: pool_type.hpp:234
BridgeSpec::sprite_table
PalSpriteID ** sprite_table
table of sprites for drawing the bridge
Definition: bridge.h:52
DiagDirToAxis
Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
Definition: direction_func.h:214
PalSpriteID::sprite
SpriteID sprite
The 'real' sprite.
Definition: gfx_type.h:23
GetBridgeHeight
int GetBridgeHeight(TileIndex t)
Get the height ('z') of a bridge.
Definition: bridge_map.cpp:70
HasTunnelBridgeReservation
bool HasTunnelBridgeReservation(Tile t)
Get the reservation state of the rail tunnel/bridge.
Definition: tunnelbridge_map.h:91
GetTileZ
int GetTileZ(TileIndex tile)
Get bottom height of the tile.
Definition: tile_map.cpp:121
ship.h
INVALID_TILE
constexpr TileIndex INVALID_TILE
The very nice invalid tile marker.
Definition: tile_type.h:95
RailTypeInfo
This struct contains all the info that is needed to draw and construct tracks.
Definition: rail.h:127
VETSB_CONTINUE
@ VETSB_CONTINUE
Bit sets of the above specified bits.
Definition: tile_cmd.h:35
IsTunnelInWayDir
bool IsTunnelInWayDir(TileIndex tile, int z, DiagDirection dir)
Is there a tunnel in the way in the given direction?
Definition: tunnel_map.cpp:48
MP_RAILWAY
@ MP_RAILWAY
A railway.
Definition: tile_type.h:49
ObjectSpec::height
uint8_t height
The height of this structure, in heightlevels; max MAX_TILE_HEIGHT.
Definition: newgrf_object.h:75
BB_HEIGHT_UNDER_BRIDGE
static const uint BB_HEIGHT_UNDER_BRIDGE
Some values for constructing bounding boxes (BB).
Definition: viewport_type.h:84
GetPartialPixelZ
uint GetPartialPixelZ(int x, int y, Slope corners)
Determines height at given coordinate of a slope.
Definition: landscape.cpp:224
TILE_SIZE
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:15
ClearBridgeMiddle
void ClearBridgeMiddle(Tile t)
Removes bridges from the given, that is bridges along the X and Y axis.
Definition: bridge_map.h:103
_settings_client
ClientSettings _settings_client
The current settings for this game.
Definition: settings.cpp:54
Town::xy
TileIndex xy
town center tile
Definition: town.h:51
DrawRailCatenaryOnBridge
void DrawRailCatenaryOnBridge(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:506
TRANSPORT_WATER
@ TRANSPORT_WATER
Transport over water.
Definition: transport_type.h:29
town.h
TileInfo::y
int y
Y position of the tile in unit coordinates.
Definition: tile_cmd.h:45
BridgeSpec::speed
uint16_t speed
maximum travel speed (1 unit = 1/1.6 mph = 1 km-ish/h)
Definition: bridge.h:47
StrongType::Typedef< uint32_t, struct TileIndexTag, StrongType::Compare, StrongType::Integer, StrongType::Compatible< int32_t >, StrongType::Compatible< int64_t > >
DIAGDIR_NW
@ DIAGDIR_NW
Northwest.
Definition: direction_type.h:78
Company::infrastructure
CompanyInfrastructure infrastructure
NOSAVE: Counts of company owned infrastructure.
Definition: company_base.h:129
DrawBridgeMiddle
void DrawBridgeMiddle(const TileInfo *ti)
Draw the middle bits of a bridge.
Definition: tunnelbridge_cmd.cpp:1544
CompanyInfrastructure::road
uint32_t road[ROADTYPE_END]
Count of company owned track bits for each road type.
Definition: company_base.h:33
CmdBuildTunnel
CommandCost CmdBuildTunnel(DoCommandFlag flags, TileIndex start_tile, TransportType transport_type, byte road_rail_type)
Build Tunnel.
Definition: tunnelbridge_cmd.cpp:625
CheckAllowRemoveTunnelBridge
static CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
Are we allowed to remove the tunnel or bridge at tile?
Definition: tunnelbridge_cmd.cpp:800
VEH_ROAD
@ VEH_ROAD
Road vehicle type.
Definition: vehicle_type.h:25
ConstructionSettings::max_tunnel_length
uint16_t max_tunnel_length
maximum length of tunnels
Definition: settings_type.h:375
Vehicle
Vehicle data structure.
Definition: vehicle_base.h:240
RailTypeInfo::strings
struct RailTypeInfo::@26 strings
Strings associated with the rail type.
GetRailType
RailType GetRailType(Tile t)
Gets the rail type of the given tile.
Definition: rail_map.h:115
ConstructionSettings::max_bridge_length
uint16_t max_bridge_length
maximum length of bridges
Definition: settings_type.h:373
Owner
Owner
Enum for all companies/owners.
Definition: company_type.h:18
DC_EXEC
@ DC_EXEC
execute the given command
Definition: command_type.h:371
GetSlopePixelZ
int GetSlopePixelZ(int x, int y, bool ground_vehicle)
Return world Z coordinate of a given point of a tile.
Definition: landscape.cpp:299
SubSprite
Used to only draw a part of the sprite.
Definition: gfx_type.h:225
CheckforTownRating
CommandCost CheckforTownRating(DoCommandFlag flags, Town *t, TownRatingCheckType type)
Does the town authority allow the (destructive) action of the current company?
Definition: town_cmd.cpp:3860
MP_ROAD
@ MP_ROAD
A tile with road (or tram tracks)
Definition: tile_type.h:50
TileDesc
Tile description for the 'land area information' tool.
Definition: tile_cmd.h:52
DoCommandFlag
DoCommandFlag
List of flags for a command.
Definition: command_type.h:369
INVALID_ROADTYPE
@ INVALID_ROADTYPE
flag for invalid roadtype
Definition: road_type.h:30
Foundation
Foundation
Enumeration for Foundations.
Definition: slope_type.h:93
CommandCost::Succeeded
bool Succeeded() const
Did this command succeed?
Definition: command_type.h:162
object_base.h
pbs.h
TUNNEL_SOUND_FRAME
static const byte TUNNEL_SOUND_FRAME
Frame when the 'enter tunnel' sound should be played.
Definition: tunnelbridge_cmd.cpp:1887
GameSettings::game_creation
GameCreationSettings game_creation
settings used during the creation of a game (map)
Definition: settings_type.h:619
IsCoast
bool IsCoast(Tile t)
Is it a coast tile?
Definition: water_map.h:204
DiagDirToDiagTrackBits
TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track bits incidating with that diagdir.
Definition: track_func.h:524
ComplementSlope
Slope ComplementSlope(Slope s)
Return the complement of a slope.
Definition: slope_func.h:76
TileInfo::tileh
Slope tileh
Slope of the tile.
Definition: tile_cmd.h:46
GVF_GOINGDOWN_BIT
@ GVF_GOINGDOWN_BIT
Vehicle is currently going downhill. (Cached track information for acceleration)
Definition: ground_vehicle.hpp:53
GetTileType
static debug_inline TileType GetTileType(Tile tile)
Get the tiletype of a given tile.
Definition: tile_map.h:96
RTO_SLOPE_NE
@ RTO_SLOPE_NE
Piece of rail on slope with north-east raised.
Definition: rail.h:77
MakeRailBridgeRamp
void MakeRailBridgeRamp(Tile t, Owner o, BridgeType bridgetype, DiagDirection d, RailType rt)
Make a bridge ramp for rails.
Definition: bridge_map.h:169
BridgeSpec
Struct containing information about a single bridge type.
Definition: bridge.h:42
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:1057
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:59
RoadBuildCost
Money RoadBuildCost(RoadType roadtype)
Returns the cost of building the specified roadtype.
Definition: road.h:252
RailTypeInfo::name
StringID name
Name of this rail type.
Definition: rail.h:176
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:101
SetBridgeMiddle
void SetBridgeMiddle(Tile t, Axis a)
Set that there is a bridge over the given axis.
Definition: bridge_map.h:114
TO_BRIDGES
@ TO_BRIDGES
bridges
Definition: transparency.h:28
Slope
Slope
Enumeration for the slope-type.
Definition: slope_type.h:48
RTBO_Y
@ RTBO_Y
Piece of rail in Y direction.
Definition: rail.h:94
DIAGDIR_SW
@ DIAGDIR_SW
Southwest.
Definition: direction_type.h:77
CheckForDockingTile
void CheckForDockingTile(TileIndex t)
Mark the supplied tile as a docking tile if it is suitable for docking.
Definition: water_cmd.cpp:184
VS_HIDDEN
@ VS_HIDDEN
Vehicle is not visible.
Definition: vehicle_base.h:33
landscape_cmd.h
RailVehicleInfo::engclass
EngineClass engclass
Class of engine for this vehicle.
Definition: engine_type.h:53
TILE_UNIT_MASK
static const uint TILE_UNIT_MASK
For masking in/out the inner-tile world coordinate units.
Definition: tile_type.h:16
TRANSPORT_RAIL
@ TRANSPORT_RAIL
Transport by train.
Definition: transport_type.h:27
CheckOwnership
CommandCost CheckOwnership(Owner owner, TileIndex tile)
Check whether the current owner owns something.
Definition: company_cmd.cpp:360
return_cmd_error
#define return_cmd_error(errcode)
Returns from a function with a specific StringID as error.
Definition: command_func.h:38
TrackBitsToTrackdirBits
TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
Converts TrackBits to TrackdirBits while allowing both directions.
Definition: track_func.h:319
_tunnel_visibility_frame
const byte _tunnel_visibility_frame[DIAGDIR_END]
Frame when a vehicle should be hidden in a tunnel with a certain direction.
EXPENSES_CONSTRUCTION
@ EXPENSES_CONSTRUCTION
Construction costs.
Definition: economy_type.h:173
HasRoadCatenaryDrawn
bool HasRoadCatenaryDrawn(RoadType roadtype)
Test if we should draw road catenary.
Definition: road_func.h:145
RailType
RailType
Enumeration for all possible railtypes.
Definition: rail_type.h:27
CommandCost
Common return value for all commands.
Definition: command_type.h:23
GetSnowLine
byte GetSnowLine()
Get the current snow line, either variable or static.
Definition: landscape.cpp:611
IsBridge
bool IsBridge(Tile t)
Checks if this is a bridge, instead of a tunnel.
Definition: bridge_map.h:24
GetBridgeSpec
const BridgeSpec * GetBridgeSpec(BridgeType i)
Get the specification of a bridge type.
Definition: bridge.h:66
IsWater
bool IsWater(Tile t)
Is it a plain water tile?
Definition: water_map.h:150
clear_func.h
SLOPE_NE
@ SLOPE_NE
north and east corner are raised
Definition: slope_type.h:58
MAX_BRIDGES
static const uint MAX_BRIDGES
Maximal number of available bridge specs.
Definition: bridge.h:35
RTSG_BRIDGE
@ RTSG_BRIDGE
Bridge surface images.
Definition: rail.h:56
DirtyCompanyInfrastructureWindows
void DirtyCompanyInfrastructureWindows(CompanyID company)
Redraw all windows with company infrastructure counts.
Definition: company_gui.cpp:2651
_bridge
BridgeSpec _bridge[MAX_BRIDGES]
The specification of all bridges.
Definition: tunnelbridge_cmd.cpp:52
CalcClosestTownFromTile
Town * CalcClosestTownFromTile(TileIndex tile, uint threshold=UINT_MAX)
Return the town closest to the given tile within threshold.
Definition: town_cmd.cpp:3726
GVF_GOINGUP_BIT
@ GVF_GOINGUP_BIT
Vehicle is currently going uphill. (Cached track information for acceleration)
Definition: ground_vehicle.hpp:52
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
Vehicle::tile
TileIndex tile
Current tile index.
Definition: vehicle_base.h:260
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
free
void free(const void *ptr)
Version of the standard free that accepts const pointers.
Definition: stdafx.h:379
autoslope.h
Vehicle::engine_type
EngineID engine_type
The type of engine used for this vehicle.
Definition: vehicle_base.h:318
TileDesc::roadtype
StringID roadtype
Type of road on the tile.
Definition: tile_cmd.h:66
MP_OBJECT
@ MP_OBJECT
Contains objects such as transmitters and owned land.
Definition: tile_type.h:58
IsTunnel
bool IsTunnel(Tile t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:23
TransportType
TransportType
Available types of transport.
Definition: transport_type.h:19
_cheats
Cheats _cheats
All the cheats.
Definition: cheat.cpp:16
ClearedObjectArea::first_tile
TileIndex first_tile
The first tile being cleared, which then causes the whole object to be cleared.
Definition: object_base.h:85
TRACKDIR_BIT_NONE
@ TRACKDIR_BIT_NONE
No track build.
Definition: track_type.h:99
INVALID_OWNER
@ INVALID_OWNER
An invalid owner.
Definition: company_type.h:29
MP_WATER
@ MP_WATER
Water tile.
Definition: tile_type.h:54
ReverseDiagDir
DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Definition: direction_func.h:118
CommandCost::Failed
bool Failed() const
Did this command fail?
Definition: command_type.h:171
station_func.h
SetRoadside
void SetRoadside(Tile tile, Roadside s)
Set the decorations of a road.
Definition: road_map.h:503
ROADSIDE_PAVED
@ ROADSIDE_PAVED
Road with paved sidewalks.
Definition: road_map.h:480
ConstructionSettings::max_bridge_height
byte max_bridge_height
maximum height of bridges
Definition: settings_type.h:374
GetNorthernBridgeEnd
TileIndex GetNorthernBridgeEnd(TileIndex t)
Finds the northern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:39
AxisToDiagDir
DiagDirection AxisToDiagDir(Axis a)
Converts an Axis to a DiagDirection.
Definition: direction_func.h:232
EndSpriteCombine
void EndSpriteCombine()
Terminates a block of sprites started by StartSpriteCombine.
Definition: viewport.cpp:779
TUNNELBRIDGE_TRACKBIT_FACTOR
static const uint TUNNELBRIDGE_TRACKBIT_FACTOR
Multiplier for how many regular track bits a tunnel/bridge counts.
Definition: economy_type.h:241
Vehicle::cur_speed
uint16_t cur_speed
current speed
Definition: vehicle_base.h:323
water_regions.h
TileDiffXY
TileIndexDiff TileDiffXY(int x, int y)
Calculates an offset for the given coordinate(-offset).
Definition: map_func.h:401
_settings_game
GameSettings _settings_game
Game settings of a running game or the scenario editor.
Definition: settings.cpp:55
IsBridgeTile
bool IsBridgeTile(Tile t)
checks if there is a bridge on this tile
Definition: bridge_map.h:35
MakeRailTunnel
void MakeRailTunnel(Tile t, Owner o, DiagDirection d, RailType r)
Makes a rail tunnel entrance.
Definition: tunnel_map.h:73
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
_local_company
CompanyID _local_company
Company controlled by the human player at this client. Can also be COMPANY_SPECTATOR.
Definition: company_cmd.cpp:49
safeguards.h
IsNormalRoadTile
static debug_inline bool IsNormalRoadTile(Tile t)
Return whether a tile is a normal road tile.
Definition: road_map.h:74
Train
'Train' is either a loco or a wagon.
Definition: train.h:89
FreeTrainTrackReservation
void FreeTrainTrackReservation(const Train *v)
Free the reserved path in front of a vehicle.
Definition: train_cmd.cpp:2393
HasTileRoadType
bool HasTileRoadType(Tile t, RoadTramType rtt)
Check if a tile has a road or a tram road type.
Definition: road_map.h:211
CommandCost::GetCost
Money GetCost() const
The costs as made up to this moment.
Definition: command_type.h:83
GetTileSlope
Slope GetTileSlope(TileIndex tile, int *h)
Return the slope of a given tile inside the map.
Definition: tile_map.cpp:59
DirToDiagDir
DiagDirection DirToDiagDir(Direction dir)
Convert a Direction to a DiagDirection.
Definition: direction_func.h:166
HasSlopeHighestCorner
bool HasSlopeHighestCorner(Slope s)
Tests if a slope has a highest corner (i.e.
Definition: slope_func.h:113
TCX_NORMAL
@ TCX_NORMAL
Nothing special.
Definition: newgrf_commons.h:24
ROTSG_BRIDGE
@ ROTSG_BRIDGE
Required: Bridge surface images.
Definition: road.h:66
GetTileOwner
Owner GetTileOwner(Tile tile)
Returns the owner of a tile.
Definition: tile_map.h:178
StartSpriteCombine
void StartSpriteCombine()
Starts a block of sprites, which are "combined" into a single bounding box.
Definition: viewport.cpp:769
INVALID_DIAGDIR
@ INVALID_DIAGDIR
Flag for an invalid DiagDirection.
Definition: direction_type.h:80
MP_TUNNELBRIDGE
@ MP_TUNNELBRIDGE
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:57
TileIndexDiff
int32_t TileIndexDiff
An offset value between two tiles.
Definition: map_func.h:376
FOUNDATION_NONE
@ FOUNDATION_NONE
The tile has no foundation, the slope remains unchanged.
Definition: slope_type.h:94
RoadTypeInfo::name
StringID name
Name of this rail type.
Definition: road.h:103
ValParamRoadType
bool ValParamRoadType(RoadType roadtype)
Validate functions for rail building.
Definition: road.cpp:153
GetSouthernBridgeEnd
TileIndex GetSouthernBridgeEnd(TileIndex t)
Finds the southern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:49
DiagDirection
DiagDirection
Enumeration for diagonal directions.
Definition: direction_type.h:73
RTBO_SLOPE
@ RTBO_SLOPE
Sloped rail pieces, in order NE, SE, SW, NW.
Definition: rail.h:95
CombineTrackStatus
TrackStatus CombineTrackStatus(TrackdirBits trackdirbits, TrackdirBits red_signals)
Builds a TrackStatus.
Definition: track_func.h:388
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:350
ROADSIDE_TREES
@ ROADSIDE_TREES
Road with trees on paved sidewalks.
Definition: road_map.h:483
tunnelbridge_cmd.h
PrepareToEnterBridge
static void PrepareToEnterBridge(T *gv)
Helper to prepare the ground vehicle when entering a bridge.
Definition: tunnelbridge_cmd.cpp:1872
CommandCost::AddCost
void AddCost(const Money &cost)
Adds the given cost to the cost of the command.
Definition: command_type.h:63
GUISettings::show_track_reservation
bool show_track_reservation
highlight reserved tracks.
Definition: settings_type.h:185
BridgeType
uint BridgeType
Bridge spec number.
Definition: bridge.h:37
stdafx.h
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:1521
TileTypeProcs
Set of callback functions for performing tile operations of a given tile type.
Definition: tile_cmd.h:158
ConstructionSettings::extra_dynamite
bool extra_dynamite
extra dynamite
Definition: settings_type.h:377
GetBridgeFoundation
Foundation GetBridgeFoundation(Slope tileh, Axis axis)
Get the foundation for a bridge.
Definition: tunnelbridge_cmd.cpp:129
SetTileOwner
void SetTileOwner(Tile tile, Owner owner)
Sets the owner of a tile.
Definition: tile_map.h:198
CalcBridgeLenCostFactor
int CalcBridgeLenCostFactor(int length)
Calculate the price factor for building a long bridge.
Definition: tunnelbridge_cmd.cpp:108
SpriteID
uint32_t SpriteID
The number of a sprite, without mapping bits and colourtables.
Definition: gfx_type.h:17
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:1133
SPR_RAILTYPE_TUNNEL_BASE
static const SpriteID SPR_RAILTYPE_TUNNEL_BASE
Tunnel sprites with grass only for custom railtype tunnel.
Definition: sprites.h:299
Cheat::value
bool value
tells if the bool cheat is active or not
Definition: cheat_type.h:18
DC_BANKRUPT
@ DC_BANKRUPT
company bankrupts, skip money check, skip vehicle on tile check in some cases
Definition: command_type.h:377
WATER_CLASS_SEA
@ WATER_CLASS_SEA
Sea.
Definition: water_map.h:48
RTSG_OVERLAY
@ RTSG_OVERLAY
Images for overlaying track.
Definition: rail.h:51
viewport_func.h
DoClearBridge
static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
Remove a bridge from the game, update town rating, etc.
Definition: tunnelbridge_cmd.cpp:928
RoadClearCost
Money RoadClearCost(RoadType roadtype)
Returns the cost of clearing the specified roadtype.
Definition: road.h:263
HasTileWaterClass
bool HasTileWaterClass(Tile t)
Checks whether the tile has an waterclass associated.
Definition: water_map.h:104
ChangeTownRating
void ChangeTownRating(Town *t, int add, int max, DoCommandFlag flags)
Changes town rating of the current company.
Definition: town_cmd.cpp:3823
Vehicle::z_pos
int32_t z_pos
z coordinate.
Definition: vehicle_base.h:301
AddSortableSpriteToDraw
void AddSortableSpriteToDraw(SpriteID image, PaletteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
Draw a (transparent) sprite at given coordinates with a given bounding box.
Definition: viewport.cpp:673
RailTypeInfo::single_sloped
SpriteID single_sloped
single piece of rail for slopes
Definition: rail.h:143
IsValidTile
bool IsValidTile(Tile tile)
Checks if a tile is valid.
Definition: tile_map.h:161
yapf_cache.h
Vehicle::direction
Direction direction
facing
Definition: vehicle_base.h:302
newgrf_object.h
RailTypeInfo::max_speed
uint16_t max_speed
Maximum speed for vehicles travelling on this rail type.
Definition: rail.h:231
BridgeSpec::min_length
byte min_length
the minimum length (not counting start and end tile)
Definition: bridge.h:44
TileOffsByDiagDir
TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
Convert a DiagDirection to a TileIndexDiff.
Definition: map_func.h:563
RailTypeInfo::single_x
SpriteID single_x
single piece of rail in X direction, without ground
Definition: rail.h:137
GetRoadTypeInfo
const RoadTypeInfo * GetRoadTypeInfo(RoadType roadtype)
Returns a pointer to the Roadtype information for a given roadtype.
Definition: road.h:227
DrawFoundation
void DrawFoundation(TileInfo *ti, Foundation f)
Draw foundation f at tile ti.
Definition: landscape.cpp:427
DistanceSquare
uint DistanceSquare(TileIndex t0, TileIndex t1)
Gets the 'Square' distance between the two given tiles.
Definition: map.cpp:176
RTSG_TUNNEL
@ RTSG_TUNNEL
Main group of ground images for snow or desert.
Definition: rail.h:53
TileDesc::tram_speed
uint16_t tram_speed
Speed limit of tram (bridges and track)
Definition: tile_cmd.h:69
Ship
All ships have this type.
Definition: ship.h:24
_current_company
CompanyID _current_company
Company currently doing an action.
Definition: company_cmd.cpp:50
vehicle_func.h
newgrf_sound.h
PALETTE_CRASH
static const PaletteID PALETTE_CRASH
Recolour sprite greying of crashed vehicles.
Definition: sprites.h:1602
strings_func.h
RTBO_X
@ RTBO_X
Piece of rail in X direction.
Definition: rail.h:93
Vehicle::First
Vehicle * First() const
Get the first vehicle of this vehicle chain.
Definition: vehicle_base.h:640
newgrf_roadtype.h
FindClearedObject
ClearedObjectArea * FindClearedObject(TileIndex tile)
Find the entry in _cleared_object_areas which occupies a certain tile.
Definition: object_cmd.cpp:531
ClearTile_TunnelBridge
static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
Remove a tunnel or a bridge from the game.
Definition: tunnelbridge_cmd.cpp:1019
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:2858
SpecializedVehicle< Train, Type >::From
static Train * From(Vehicle *v)
Converts a Vehicle to SpecializedVehicle with type checking.
Definition: vehicle_base.h:1201
abs
constexpr T abs(const T a)
Returns the absolute value of (scalar) variable.
Definition: math_func.hpp:23
GetTilePixelSlope
Slope GetTilePixelSlope(TileIndex tile, int *h)
Return the slope of a given tile.
Definition: tile_map.h:280
SetDParam
void SetDParam(size_t n, uint64_t v)
Set a string parameter v at index n in the global string parameter array.
Definition: strings.cpp:104
TCX_ON_BRIDGE
@ TCX_ON_BRIDGE
Querying information about stuff on the bridge (via some bridgehead).
Definition: newgrf_commons.h:26
ConstructionSettings::build_on_slopes
bool build_on_slopes
allow building on slopes
Definition: settings_type.h:371
ROTSG_OVERLAY
@ ROTSG_OVERLAY
Optional: Images for overlaying track.
Definition: road.h:61
RTO_X
@ RTO_X
Piece of rail in X direction.
Definition: rail.h:71
SLOPE_SW
@ SLOPE_SW
south and west corner are raised
Definition: slope_type.h:56
cheat_type.h
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:2051
ObjectSpec::GetByTile
static const ObjectSpec * GetByTile(TileIndex tile)
Get the specification associated with a tile.
Definition: newgrf_object.cpp:65
AddSideToSignalBuffer
void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner)
Add side of tile to signal update buffer.
Definition: signal.cpp:610
OWNER_NONE
@ OWNER_NONE
The tile has no ownership.
Definition: company_type.h:25
Ship::state
TrackBits state
The "track" the ship is following.
Definition: ship.h:25
GetRoadOwner
Owner GetRoadOwner(Tile t, RoadTramType rtt)
Get the owner of a specific road type.
Definition: road_map.h:234
ROTSG_CATENARY_FRONT
@ ROTSG_CATENARY_FRONT
Optional: Catenary front.
Definition: road.h:64
Town::cache
TownCache cache
Container for all cacheable data.
Definition: town.h:53
UpdateCompanyRoadInfrastructure
void UpdateCompanyRoadInfrastructure(RoadType rt, Owner o, int count)
Update road infrastructure counts for a company.
Definition: road_cmd.cpp:190
HasRailCatenaryDrawn
bool HasRailCatenaryDrawn(RailType rt)
Test if we should draw rail catenary.
Definition: elrail_func.h:30
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
RoadType
RoadType
The different roadtypes we support.
Definition: road_type.h:25
OWNER_DEITY
@ OWNER_DEITY
The object is owned by a superuser / goal script.
Definition: company_type.h:27
IsBridgeAbove
bool IsBridgeAbove(Tile t)
checks if a bridge is set above the ground of this tile
Definition: bridge_map.h:45
TileDesc::str
StringID str
Description of the tile.
Definition: tile_cmd.h:53
DC_AUTO
@ DC_AUTO
don't allow building on structures
Definition: command_type.h:372
PalSpriteID
Combination of a palette sprite and a 'real' sprite.
Definition: gfx_type.h:22
DiagDirToDiagTrack
Track DiagDirToDiagTrack(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track incidating with that diagdir.
Definition: track_func.h:512
RoadTypeInfo::strings
struct RoadTypeInfo::@29 strings
Strings associated with the rail type.
SetRoadOwner
void SetRoadOwner(Tile t, RoadTramType rtt, Owner o)
Set the owner of a specific road type.
Definition: road_map.h:251
GetOtherTunnelBridgeEnd
TileIndex GetOtherTunnelBridgeEnd(Tile t)
Determines type of the wormhole and returns its other end.
Definition: tunnelbridge_map.h:78
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
ROTSG_TUNNEL
@ ROTSG_TUNNEL
Optional: Ground images for tunnels.
Definition: road.h:63
GetOtherTunnelEnd
TileIndex GetOtherTunnelEnd(TileIndex tile)
Gets the other end of the tunnel.
Definition: tunnel_map.cpp:22
AXIS_X
@ AXIS_X
The X axis.
Definition: direction_type.h:117
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:187
TileArea
OrthogonalTileArea TileArea
Shorthand for the much more common orthogonal tile area.
Definition: tilearea_type.h:102
DrawRailCatenaryOnTunnel
void DrawRailCatenaryOnTunnel(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:249
MarkBridgeDirty
void MarkBridgeDirty(TileIndex begin, TileIndex end, DiagDirection direction, uint bridge_height)
Mark bridge tiles dirty.
Definition: tunnelbridge_cmd.cpp:67
CalcBridgePiece
static BridgePieces CalcBridgePiece(uint north, uint south)
Compute bridge piece.
Definition: tunnelbridge_cmd.cpp:1525
CheckTileOwnership
CommandCost CheckTileOwnership(TileIndex tile)
Check whether the current owner owns the stuff on the given tile.
Definition: company_cmd.cpp:378
CommandHelper
Definition: command_func.h:93
RoadTypeInfo::max_speed
uint16_t max_speed
Maximum speed for vehicles travelling on this road type.
Definition: road.h:142
lengthof
#define lengthof(x)
Return the length of an fixed size array.
Definition: stdafx.h:300
Town
Town data structure.
Definition: town.h:50
RVSB_WORMHOLE
@ RVSB_WORMHOLE
The vehicle is in a tunnel and/or bridge.
Definition: roadveh.h:39
SlopeToSpriteOffset
uint SlopeToSpriteOffset(Slope s)
Returns the Sprite offset for a given Slope.
Definition: slope_func.h:415
BridgeSpec::avail_year
TimerGameCalendar::Year avail_year
the year where it becomes available
Definition: bridge.h:43
TileHeight
static debug_inline uint TileHeight(Tile tile)
Returns the height of a tile.
Definition: tile_map.h:29
RailTypeInfo::base_sprites
struct RailTypeInfo::@23 base_sprites
Struct containing the main sprites.
TILE_HEIGHT
static const uint TILE_HEIGHT
Height of a height level in world coordinate AND in pixels in #ZOOM_LVL_BASE.
Definition: tile_type.h:18
OverflowSafeInt< int64_t >
DrawTile_TunnelBridge
static void DrawTile_TunnelBridge(TileInfo *ti)
Draws a tunnel of bridge tile.
Definition: tunnelbridge_cmd.cpp:1259
DrawRailCatenary
void DrawRailCatenary(const TileInfo *ti)
Draws overhead wires and pylons for electric railways.
Definition: elrail.cpp:568
CheckBridgeAvailability
CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
Is a bridge of the specified type and length available?
Definition: tunnelbridge_cmd.cpp:200
TRANSPORT_ROAD
@ TRANSPORT_ROAD
Transport by road vehicle.
Definition: transport_type.h:28
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:153
TileDesc::owner_type
StringID owner_type[4]
Type of each owner.
Definition: tile_cmd.h:56
TileInfo::x
int x
X position of the tile in unit coordinates.
Definition: tile_cmd.h:44
PalSpriteID::pal
PaletteID pal
The palette (use PAL_NONE) if not needed)
Definition: gfx_type.h:24
TileInfo::tile
TileIndex tile
Tile index.
Definition: tile_cmd.h:47
GameSettings::construction
ConstructionSettings construction
construction of things in-game
Definition: settings_type.h:620
TileDesc::rail_speed
uint16_t rail_speed
Speed limit of rail (bridges and track)
Definition: tile_cmd.h:65
VEH_TRAIN
@ VEH_TRAIN
Train vehicle type.
Definition: vehicle_type.h:24
CmdBuildBridge
CommandCost CmdBuildBridge(DoCommandFlag flags, TileIndex tile_end, TileIndex tile_start, TransportType transport_type, BridgeType bridge_type, byte road_rail_type)
Build a Bridge.
Definition: tunnelbridge_cmd.cpp:261
Pool::PoolItem<&_company_pool >::IsValidID
static bool IsValidID(size_t index)
Tests whether given index can be used to get valid (non-nullptr) Titem.
Definition: pool_type.hpp:324
BaseVehicle::type
VehicleType type
Type of vehicle.
Definition: vehicle_type.h:51
MakeAqueductBridgeRamp
void MakeAqueductBridgeRamp(Tile t, Owner o, DiagDirection d)
Make a bridge ramp for aqueducts.
Definition: bridge_map.h:181
TileX
static debug_inline uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:427
TileDesc::tramtype
StringID tramtype
Type of tram on the tile.
Definition: tile_cmd.h:68
DC_QUERY_COST
@ DC_QUERY_COST
query cost only, don't build.
Definition: command_type.h:373
GetBridgePixelHeight
int GetBridgePixelHeight(TileIndex tile)
Get the height ('z') of a bridge in pixels.
Definition: bridge_map.h:84
TUNNELBRIDGE_REMOVE
@ TUNNELBRIDGE_REMOVE
Removal of a tunnel or bridge owned by the towb.
Definition: town.h:169
SLOPE_FLAT
@ SLOPE_FLAT
a flat tile
Definition: slope_type.h:49
Track
Track
These are used to specify a single track.
Definition: track_type.h:19
ApplyFoundationToSlope
uint ApplyFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.cpp:166
DIAGDIR_NE
@ DIAGDIR_NE
Northeast, upper right on your monitor.
Definition: direction_type.h:75
ClearedObjectArea
Keeps track of removed objects during execution/testruns of commands.
Definition: object_base.h:84
VEH_SHIP
@ VEH_SHIP
Ship vehicle type.
Definition: vehicle_type.h:26
TunnelBridgeClearCost
static Money TunnelBridgeClearCost(TileIndex tile, Price base_price)
Calculate the base cost of clearing a tunnel/bridge per tile.
Definition: tunnelbridge_cmd.cpp:224
GetBridgeAxis
Axis GetBridgeAxis(Tile t)
Get the axis of the bridge that goes over the tile.
Definition: bridge_map.h:68
Company
Definition: company_base.h:116
BridgePieces
BridgePieces
This enum is related to the definition of bridge pieces, which is used to determine the proper sprite...
Definition: bridge.h:22
ClrBit
constexpr T ClrBit(T &x, const uint8_t y)
Clears a bit in a variable.
Definition: bitmath_func.hpp:151
IsTileOwner
bool IsTileOwner(Tile tile, Owner owner)
Checks if a tile belongs to the given owner.
Definition: tile_map.h:214
DiagDirToDiagTrackdir
Trackdir DiagDirToDiagTrackdir(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal trackdir that runs in that direction.
Definition: track_func.h:537
OWNER_WATER
@ OWNER_WATER
The tile/execution is done by "water".
Definition: company_type.h:26
GetTropicZone
TropicZone GetTropicZone(Tile tile)
Get the tropic zone.
Definition: tile_map.h:238
OtherAxis
Axis OtherAxis(Axis a)
Select the other axis as provided.
Definition: direction_func.h:197
ROTSG_CATENARY_BACK
@ ROTSG_CATENARY_BACK
Optional: Catenary back.
Definition: road.h:65
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:1077
bridge_land.h
GetInclinedSlopeDirection
DiagDirection GetInclinedSlopeDirection(Slope s)
Returns the direction of an inclined slope.
Definition: slope_func.h:239
HasTileWaterGround
bool HasTileWaterGround(Tile t)
Checks whether the tile has water at the ground.
Definition: water_map.h:353
ApplyPixelFoundationToSlope
uint ApplyPixelFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.h:129
CompanyInfrastructure::water
uint32_t water
Count of company owned track bits for canals.
Definition: company_base.h:36
IsRoadDepot
static debug_inline bool IsRoadDepot(Tile t)
Return whether a tile is a road depot.
Definition: road_map.h:106
TownCache::squared_town_zone_radius
uint32_t squared_town_zone_radius[HZB_END]
UpdateTownRadius updates this given the house count.
Definition: town.h:45
RATING_TUNNEL_BRIDGE_DOWN_STEP
@ RATING_TUNNEL_BRIDGE_DOWN_STEP
penalty for removing town owned tunnel or bridge
Definition: town_type.h:57
RailTypeInfo::single_y
SpriteID single_y
single piece of rail in Y direction, without ground
Definition: rail.h:138
VehicleEnterTileStatus
VehicleEnterTileStatus
The returned bits of VehicleEnterTile.
Definition: tile_cmd.h:21
OWNER_TOWN
@ OWNER_TOWN
A town owns the tile, or a town is expanding.
Definition: company_type.h:24
newgrf_railtype.h
TunnelBridgeIsFree
CommandCost TunnelBridgeIsFree(TileIndex tile, TileIndex endtile, const Vehicle *ignore)
Finds vehicle in tunnel / bridge.
Definition: vehicle.cpp:575
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:589
_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:53
GetBridgeType
BridgeType GetBridgeType(Tile t)
Determines the type of bridge on a tile.
Definition: bridge_map.h:56
RailBuildCost
Money RailBuildCost(RailType railtype)
Returns the cost of building the specified railtype.
Definition: rail.h:375
ClientSettings::gui
GUISettings gui
settings related to the GUI
Definition: settings_type.h:636
GetTrainForReservation
Train * GetTrainForReservation(TileIndex tile, Track track)
Find the train which has reserved a specific path.
Definition: pbs.cpp:330
CompanyInfrastructure::rail
uint32_t rail[RAILTYPE_END]
Count of company owned track bits for each rail type.
Definition: company_base.h:35
BridgeSpec::max_length
uint16_t max_length
the maximum length (not counting start and end tile)
Definition: bridge.h:45
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:96
SPR_TRAMWAY_BASE
static const SpriteID SPR_TRAMWAY_BASE
Tramway sprites.
Definition: sprites.h:272
DrawBridgeRoadBits
static void DrawBridgeRoadBits(TileIndex head_tile, int x, int y, int z, int offset, bool head)
Draws the road and trambits over an already drawn (lower end) of a bridge.
Definition: tunnelbridge_cmd.cpp:1159
VETSB_ENTERED_WORMHOLE
@ VETSB_ENTERED_WORMHOLE
The vehicle either entered a bridge, tunnel or depot tile (this includes the last tile of the bridge/...
Definition: tile_cmd.h:37
roadveh.h
GetTunnelBridgeDirection
DiagDirection GetTunnelBridgeDirection(Tile t)
Get the direction pointing to the other end.
Definition: tunnelbridge_map.h:26
TimerGameCalendar::year
static Year year
Current year, starting at 0.
Definition: timer_game_calendar.h:32
INVALID_RAILTYPE
@ INVALID_RAILTYPE
Flag for invalid railtype.
Definition: rail_type.h:34
ObjectSpec::flags
ObjectFlags flags
Flags/settings related to the object.
Definition: newgrf_object.h:73
RTSG_TUNNEL_PORTAL
@ RTSG_TUNNEL_PORTAL
Tunnel portal overlay.
Definition: rail.h:60
HasBit
constexpr debug_inline bool HasBit(const T x, const uint8_t y)
Checks if a bit in a value is set.
Definition: bitmath_func.hpp:103