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00016 #include "stdafx.h"
00017 #include "newgrf_object.h"
00018 #include "viewport_func.h"
00019 #include "cmd_helper.h"
00020 #include "command_func.h"
00021 #include "town.h"
00022 #include "train.h"
00023 #include "ship.h"
00024 #include "roadveh.h"
00025 #include "pathfinder/yapf/yapf_cache.h"
00026 #include "newgrf_sound.h"
00027 #include "autoslope.h"
00028 #include "tunnelbridge_map.h"
00029 #include "strings_func.h"
00030 #include "date_func.h"
00031 #include "clear_func.h"
00032 #include "vehicle_func.h"
00033 #include "sound_func.h"
00034 #include "tunnelbridge.h"
00035 #include "cheat_type.h"
00036 #include "elrail_func.h"
00037 #include "pbs.h"
00038 #include "company_base.h"
00039 #include "newgrf_railtype.h"
00040 #include "object_base.h"
00041 #include "water.h"
00042 #include "company_gui.h"
00043
00044 #include "table/strings.h"
00045 #include "table/bridge_land.h"
00046
00047 BridgeSpec _bridge[MAX_BRIDGES];
00048 TileIndex _build_tunnel_endtile;
00049
00051 static const int BRIDGE_Z_START = 3;
00052
00054 void ResetBridges()
00055 {
00056
00057 for (BridgeType i = 0; i < MAX_BRIDGES; i++) {
00058 if (_bridge[i].sprite_table != NULL) {
00059 for (BridgePieces j = BRIDGE_PIECE_NORTH; j < BRIDGE_PIECE_INVALID; j++) free(_bridge[i].sprite_table[j]);
00060 free(_bridge[i].sprite_table);
00061 }
00062 }
00063
00064
00065 memset(&_bridge, 0, sizeof(_bridge));
00066
00067 memcpy(&_bridge, &_orig_bridge, sizeof(_orig_bridge));
00068 }
00069
00076 int CalcBridgeLenCostFactor(int length)
00077 {
00078 if (length < 2) return length;
00079
00080 length -= 2;
00081 int sum = 2;
00082 for (int delta = 1;; delta++) {
00083 for (int count = 0; count < delta; count++) {
00084 if (length == 0) return sum;
00085 sum += delta;
00086 length--;
00087 }
00088 }
00089 }
00090
00097 Foundation GetBridgeFoundation(Slope tileh, Axis axis)
00098 {
00099 if (tileh == SLOPE_FLAT ||
00100 ((tileh == SLOPE_NE || tileh == SLOPE_SW) && axis == AXIS_X) ||
00101 ((tileh == SLOPE_NW || tileh == SLOPE_SE) && axis == AXIS_Y)) return FOUNDATION_NONE;
00102
00103 return (HasSlopeHighestCorner(tileh) ? InclinedFoundation(axis) : FlatteningFoundation(tileh));
00104 }
00105
00113 bool HasBridgeFlatRamp(Slope tileh, Axis axis)
00114 {
00115 ApplyFoundationToSlope(GetBridgeFoundation(tileh, axis), &tileh);
00116
00117 return (tileh != SLOPE_FLAT);
00118 }
00119
00120 static inline const PalSpriteID *GetBridgeSpriteTable(int index, BridgePieces table)
00121 {
00122 const BridgeSpec *bridge = GetBridgeSpec(index);
00123 assert(table < BRIDGE_PIECE_INVALID);
00124 if (bridge->sprite_table == NULL || bridge->sprite_table[table] == NULL) {
00125 return _bridge_sprite_table[index][table];
00126 } else {
00127 return bridge->sprite_table[table];
00128 }
00129 }
00130
00131
00140 static CommandCost CheckBridgeSlopeNorth(Axis axis, Slope *tileh, int *z)
00141 {
00142 Foundation f = GetBridgeFoundation(*tileh, axis);
00143 *z += ApplyFoundationToSlope(f, tileh);
00144
00145 Slope valid_inclined = (axis == AXIS_X ? SLOPE_NE : SLOPE_NW);
00146 if ((*tileh != SLOPE_FLAT) && (*tileh != valid_inclined)) return CMD_ERROR;
00147
00148 if (f == FOUNDATION_NONE) return CommandCost();
00149
00150 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
00151 }
00152
00161 static CommandCost CheckBridgeSlopeSouth(Axis axis, Slope *tileh, int *z)
00162 {
00163 Foundation f = GetBridgeFoundation(*tileh, axis);
00164 *z += ApplyFoundationToSlope(f, tileh);
00165
00166 Slope valid_inclined = (axis == AXIS_X ? SLOPE_SW : SLOPE_SE);
00167 if ((*tileh != SLOPE_FLAT) && (*tileh != valid_inclined)) return CMD_ERROR;
00168
00169 if (f == FOUNDATION_NONE) return CommandCost();
00170
00171 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
00172 }
00173
00180 CommandCost CheckBridgeAvailability(BridgeType bridge_type, uint bridge_len, DoCommandFlag flags)
00181 {
00182 if (flags & DC_QUERY_COST) {
00183 if (bridge_len <= _settings_game.construction.max_bridge_length) return CommandCost();
00184 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
00185 }
00186
00187 if (bridge_type >= MAX_BRIDGES) return CMD_ERROR;
00188
00189 const BridgeSpec *b = GetBridgeSpec(bridge_type);
00190 if (b->avail_year > _cur_year) return CMD_ERROR;
00191
00192 uint max = min(b->max_length, _settings_game.construction.max_bridge_length);
00193
00194 if (b->min_length > bridge_len) return CMD_ERROR;
00195 if (bridge_len <= max) return CommandCost();
00196 return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
00197 }
00198
00211 CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00212 {
00213 CompanyID company = _current_company;
00214
00215 RailType railtype = INVALID_RAILTYPE;
00216 RoadTypes roadtypes = ROADTYPES_NONE;
00217
00218
00219 BridgeType bridge_type = GB(p2, 0, 8);
00220
00221 if (!IsValidTile(p1)) return_cmd_error(STR_ERROR_BRIDGE_THROUGH_MAP_BORDER);
00222
00223 TransportType transport_type = Extract<TransportType, 15, 2>(p2);
00224
00225
00226 switch (transport_type) {
00227 case TRANSPORT_ROAD:
00228 roadtypes = Extract<RoadTypes, 8, 2>(p2);
00229 if (!HasExactlyOneBit(roadtypes) || !HasRoadTypesAvail(company, roadtypes)) return CMD_ERROR;
00230 break;
00231
00232 case TRANSPORT_RAIL:
00233 railtype = Extract<RailType, 8, 4>(p2);
00234 if (!ValParamRailtype(railtype)) return CMD_ERROR;
00235 break;
00236
00237 case TRANSPORT_WATER:
00238 break;
00239
00240 default:
00241
00242 return CMD_ERROR;
00243 }
00244 TileIndex tile_start = p1;
00245 TileIndex tile_end = end_tile;
00246
00247 if (company == OWNER_DEITY) {
00248 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
00249 const Town *town = CalcClosestTownFromTile(tile_start);
00250
00251 company = OWNER_TOWN;
00252
00253
00254 if (town == NULL || DistanceSquare(tile_start, town->xy) > town->squared_town_zone_radius[HZB_TOWN_EDGE]) {
00255 company = OWNER_NONE;
00256 }
00257 }
00258
00259 if (tile_start == tile_end) {
00260 return_cmd_error(STR_ERROR_CAN_T_START_AND_END_ON);
00261 }
00262
00263 Axis direction;
00264 if (TileX(tile_start) == TileX(tile_end)) {
00265 direction = AXIS_Y;
00266 } else if (TileY(tile_start) == TileY(tile_end)) {
00267 direction = AXIS_X;
00268 } else {
00269 return_cmd_error(STR_ERROR_START_AND_END_MUST_BE_IN);
00270 }
00271
00272 if (tile_end < tile_start) Swap(tile_start, tile_end);
00273
00274 uint bridge_len = GetTunnelBridgeLength(tile_start, tile_end);
00275 if (transport_type != TRANSPORT_WATER) {
00276
00277 CommandCost ret = CheckBridgeAvailability(bridge_type, bridge_len, flags);
00278 if (ret.Failed()) return ret;
00279 } else {
00280 if (bridge_len > _settings_game.construction.max_bridge_length) return_cmd_error(STR_ERROR_BRIDGE_TOO_LONG);
00281 }
00282
00283 int z_start;
00284 int z_end;
00285 Slope tileh_start = GetTileSlope(tile_start, &z_start);
00286 Slope tileh_end = GetTileSlope(tile_end, &z_end);
00287 bool pbs_reservation = false;
00288
00289 CommandCost terraform_cost_north = CheckBridgeSlopeNorth(direction, &tileh_start, &z_start);
00290 CommandCost terraform_cost_south = CheckBridgeSlopeSouth(direction, &tileh_end, &z_end);
00291
00292
00293 if (transport_type == TRANSPORT_WATER && (tileh_start == SLOPE_FLAT || tileh_end == SLOPE_FLAT)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
00294 if (z_start != z_end) return_cmd_error(STR_ERROR_BRIDGEHEADS_NOT_SAME_HEIGHT);
00295
00296 CommandCost cost(EXPENSES_CONSTRUCTION);
00297 Owner owner;
00298 if (IsBridgeTile(tile_start) && IsBridgeTile(tile_end) &&
00299 GetOtherBridgeEnd(tile_start) == tile_end &&
00300 GetTunnelBridgeTransportType(tile_start) == transport_type) {
00301
00302
00303
00304 if (transport_type == TRANSPORT_RAIL && GetRailType(tile_start) != railtype) {
00305 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00306 }
00307
00308
00309 if (!(flags & DC_QUERY_COST) && IsTileOwner(tile_start, OWNER_TOWN) &&
00310 GetBridgeSpec(bridge_type)->speed < GetBridgeSpec(GetBridgeType(tile_start))->speed) {
00311 Town *t = ClosestTownFromTile(tile_start, UINT_MAX);
00312
00313 if (t == NULL) {
00314 return CMD_ERROR;
00315 } else {
00316 SetDParam(0, t->index);
00317 return_cmd_error(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS);
00318 }
00319 }
00320
00321
00322 if (!(flags & DC_QUERY_COST) && bridge_type == GetBridgeType(tile_start)) {
00323 return_cmd_error(STR_ERROR_ALREADY_BUILT);
00324 }
00325
00326
00327 if (!IsTileOwner(tile_start, company) && !IsTileOwner(tile_start, OWNER_TOWN)) {
00328 return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
00329 }
00330
00331 cost.AddCost((bridge_len + 1) * _price[PR_CLEAR_BRIDGE]);
00332 owner = GetTileOwner(tile_start);
00333
00334 switch (transport_type) {
00335 case TRANSPORT_RAIL:
00336
00337 pbs_reservation = HasTunnelBridgeReservation(tile_start);
00338 break;
00339
00340 case TRANSPORT_ROAD:
00341
00342 roadtypes |= GetRoadTypes(tile_start);
00343 break;
00344
00345 default: break;
00346 }
00347 } else {
00348
00349
00350 bool allow_on_slopes = (_settings_game.construction.build_on_slopes && transport_type != TRANSPORT_WATER);
00351
00352
00353 CommandCost ret = DoCommand(tile_start, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00354 if (ret.Failed()) return ret;
00355 cost = ret;
00356
00357 if (terraform_cost_north.Failed() || (terraform_cost_north.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
00358 cost.AddCost(terraform_cost_north);
00359
00360
00361 ret = DoCommand(tile_end, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00362 if (ret.Failed()) return ret;
00363 cost.AddCost(ret);
00364
00365
00366 if (terraform_cost_south.Failed() || (terraform_cost_south.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
00367 cost.AddCost(terraform_cost_south);
00368
00369 const TileIndex heads[] = {tile_start, tile_end};
00370 for (int i = 0; i < 2; i++) {
00371 if (MayHaveBridgeAbove(heads[i])) {
00372 if (IsBridgeAbove(heads[i])) {
00373 TileIndex north_head = GetNorthernBridgeEnd(heads[i]);
00374
00375 if (direction == GetBridgeAxis(heads[i])) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00376
00377 if (z_start + 1 == GetBridgeHeight(north_head)) {
00378 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00379 }
00380 }
00381 }
00382 }
00383
00384 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
00385 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
00386 if (GetTileMaxZ(tile) > z_start) return_cmd_error(STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN);
00387
00388 if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
00389
00390 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00391 }
00392
00393 switch (GetTileType(tile)) {
00394 case MP_WATER:
00395 if (!IsWater(tile) && !IsCoast(tile)) goto not_valid_below;
00396 break;
00397
00398 case MP_RAILWAY:
00399 if (!IsPlainRail(tile)) goto not_valid_below;
00400 break;
00401
00402 case MP_ROAD:
00403 if (IsRoadDepot(tile)) goto not_valid_below;
00404 break;
00405
00406 case MP_TUNNELBRIDGE:
00407 if (IsTunnel(tile)) break;
00408 if (direction == DiagDirToAxis(GetTunnelBridgeDirection(tile))) goto not_valid_below;
00409 if (z_start < GetBridgeHeight(tile)) goto not_valid_below;
00410 break;
00411
00412 case MP_OBJECT: {
00413 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
00414 if ((spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) == 0) goto not_valid_below;
00415 if (GetTileMaxZ(tile) + spec->height > z_start) goto not_valid_below;
00416 break;
00417 }
00418
00419 case MP_CLEAR:
00420 break;
00421
00422 default:
00423 not_valid_below:;
00424
00425 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00426 if (ret.Failed()) return ret;
00427 cost.AddCost(ret);
00428 break;
00429 }
00430
00431 if (flags & DC_EXEC) {
00432
00433
00434
00435 SetBridgeMiddle(tile, direction);
00436 }
00437 }
00438
00439 owner = company;
00440 }
00441
00442
00443 if (flags & DC_EXEC) {
00444 DiagDirection dir = AxisToDiagDir(direction);
00445
00446 Company *c = Company::GetIfValid(owner);
00447 switch (transport_type) {
00448 case TRANSPORT_RAIL:
00449
00450 if (!IsBridgeTile(tile_start) && c != NULL) c->infrastructure.rail[railtype] += (bridge_len + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00451 MakeRailBridgeRamp(tile_start, owner, bridge_type, dir, railtype);
00452 MakeRailBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), railtype);
00453 SetTunnelBridgeReservation(tile_start, pbs_reservation);
00454 SetTunnelBridgeReservation(tile_end, pbs_reservation);
00455 break;
00456
00457 case TRANSPORT_ROAD:
00458 if (c != NULL) {
00459
00460 RoadType new_rt;
00461 FOR_EACH_SET_ROADTYPE(new_rt, roadtypes ^ (IsBridgeTile(tile_start) ? GetRoadTypes(tile_start) : ROADTYPES_NONE)) {
00462
00463 Company::Get(owner)->infrastructure.road[new_rt] += (bridge_len + 2) * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00464 }
00465 }
00466 MakeRoadBridgeRamp(tile_start, owner, bridge_type, dir, roadtypes);
00467 MakeRoadBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), roadtypes);
00468 break;
00469
00470 case TRANSPORT_WATER:
00471 if (!IsBridgeTile(tile_start) && c != NULL) c->infrastructure.water += (bridge_len + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00472 MakeAqueductBridgeRamp(tile_start, owner, dir);
00473 MakeAqueductBridgeRamp(tile_end, owner, ReverseDiagDir(dir));
00474 break;
00475
00476 default:
00477 NOT_REACHED();
00478 }
00479
00480
00481 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
00482 for (TileIndex tile = tile_start; tile <= tile_end; tile += delta) {
00483 MarkTileDirtyByTile(tile);
00484 }
00485 DirtyCompanyInfrastructureWindows(owner);
00486 }
00487
00488 if ((flags & DC_EXEC) && transport_type == TRANSPORT_RAIL) {
00489 Track track = AxisToTrack(direction);
00490 AddSideToSignalBuffer(tile_start, INVALID_DIAGDIR, company);
00491 YapfNotifyTrackLayoutChange(tile_start, track);
00492 }
00493
00494
00495
00496
00497
00498 Company *c = Company::GetIfValid(company);
00499 if (!(flags & DC_QUERY_COST) || (c != NULL && c->is_ai)) {
00500 bridge_len += 2;
00501
00502 switch (transport_type) {
00503 case TRANSPORT_ROAD: cost.AddCost(bridge_len * _price[PR_BUILD_ROAD] * 2 * CountBits(roadtypes)); break;
00504 case TRANSPORT_RAIL: cost.AddCost(bridge_len * RailBuildCost(railtype)); break;
00505 default: break;
00506 }
00507
00508 if (c != NULL) bridge_len = CalcBridgeLenCostFactor(bridge_len);
00509
00510 if (transport_type != TRANSPORT_WATER) {
00511 cost.AddCost((int64)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
00512 } else {
00513
00514 cost.AddCost((int64)bridge_len * _price[PR_BUILD_AQUEDUCT]);
00515 }
00516
00517 }
00518
00519 return cost;
00520 }
00521
00522
00533 CommandCost CmdBuildTunnel(TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00534 {
00535 CompanyID company = _current_company;
00536
00537 TransportType transport_type = Extract<TransportType, 8, 2>(p1);
00538
00539 RailType railtype = INVALID_RAILTYPE;
00540 RoadTypes rts = ROADTYPES_NONE;
00541 _build_tunnel_endtile = 0;
00542 switch (transport_type) {
00543 case TRANSPORT_RAIL:
00544 railtype = Extract<RailType, 0, 4>(p1);
00545 if (!ValParamRailtype(railtype)) return CMD_ERROR;
00546 break;
00547
00548 case TRANSPORT_ROAD:
00549 rts = Extract<RoadTypes, 0, 2>(p1);
00550 if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(company, rts)) return CMD_ERROR;
00551 break;
00552
00553 default: return CMD_ERROR;
00554 }
00555
00556 if (company == OWNER_DEITY) {
00557 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
00558 const Town *town = CalcClosestTownFromTile(start_tile);
00559
00560 company = OWNER_TOWN;
00561
00562
00563 if (town == NULL || DistanceSquare(start_tile, town->xy) > town->squared_town_zone_radius[HZB_TOWN_EDGE]) {
00564 company = OWNER_NONE;
00565 }
00566 }
00567
00568 int start_z;
00569 int end_z;
00570 Slope start_tileh = GetTileSlope(start_tile, &start_z);
00571 DiagDirection direction = GetInclinedSlopeDirection(start_tileh);
00572 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE_FOR_TUNNEL);
00573
00574 if (HasTileWaterGround(start_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
00575
00576 CommandCost ret = DoCommand(start_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00577 if (ret.Failed()) return ret;
00578
00579
00580
00581
00582
00583
00584 TileIndexDiff delta = TileOffsByDiagDir(direction);
00585 DiagDirection tunnel_in_way_dir;
00586 if (DiagDirToAxis(direction) == AXIS_Y) {
00587 tunnel_in_way_dir = (TileX(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SW : DIAGDIR_NE;
00588 } else {
00589 tunnel_in_way_dir = (TileY(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SE : DIAGDIR_NW;
00590 }
00591
00592 TileIndex end_tile = start_tile;
00593
00594
00595 int tiles_coef = 3;
00596
00597 int tiles = 0;
00598
00599 int tiles_bump = 25;
00600
00601 CommandCost cost(EXPENSES_CONSTRUCTION);
00602 Slope end_tileh;
00603 for (;;) {
00604 end_tile += delta;
00605 if (!IsValidTile(end_tile)) return_cmd_error(STR_ERROR_TUNNEL_THROUGH_MAP_BORDER);
00606 end_tileh = GetTileSlope(end_tile, &end_z);
00607
00608 if (start_z == end_z) break;
00609
00610 if (!_cheats.crossing_tunnels.value && IsTunnelInWayDir(end_tile, start_z, tunnel_in_way_dir)) {
00611 return_cmd_error(STR_ERROR_ANOTHER_TUNNEL_IN_THE_WAY);
00612 }
00613
00614 tiles++;
00615 if (tiles == tiles_bump) {
00616 tiles_coef++;
00617 tiles_bump *= 2;
00618 }
00619
00620 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00621 cost.AddCost(cost.GetCost() >> tiles_coef);
00622 }
00623
00624
00625 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00626 cost.AddCost(ret);
00627
00628
00629 _build_tunnel_endtile = end_tile;
00630
00631 if (tiles > _settings_game.construction.max_tunnel_length) return_cmd_error(STR_ERROR_TUNNEL_TOO_LONG);
00632
00633 if (HasTileWaterGround(end_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
00634
00635
00636 ret = DoCommand(end_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00637 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
00638 cost.AddCost(ret);
00639
00640
00641 if (end_tileh != ComplementSlope(start_tileh)) {
00642
00643
00644 ClearedObjectArea *coa = FindClearedObject(end_tile);
00645 if (coa == NULL) {
00646 coa = _cleared_object_areas.Append();
00647 coa->first_tile = end_tile;
00648 coa->area = TileArea(end_tile, 1, 1);
00649 }
00650
00651
00652 TileIndex old_first_tile = coa->first_tile;
00653 coa->first_tile = INVALID_TILE;
00654 ret = DoCommand(end_tile, end_tileh & start_tileh, 0, flags, CMD_TERRAFORM_LAND);
00655 coa->first_tile = old_first_tile;
00656 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
00657 cost.AddCost(ret);
00658 }
00659 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00660
00661
00662 switch (transport_type) {
00663 case TRANSPORT_ROAD: cost.AddCost((tiles + 2) * _price[PR_BUILD_ROAD] * 2); break;
00664 case TRANSPORT_RAIL: cost.AddCost((tiles + 2) * RailBuildCost(railtype)); break;
00665 default: break;
00666 }
00667
00668 if (flags & DC_EXEC) {
00669 Company *c = Company::GetIfValid(company);
00670 uint num_pieces = (tiles + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00671 if (transport_type == TRANSPORT_RAIL) {
00672 if (!IsTunnelTile(start_tile) && c != NULL) c->infrastructure.rail[railtype] += num_pieces;
00673 MakeRailTunnel(start_tile, company, direction, railtype);
00674 MakeRailTunnel(end_tile, company, ReverseDiagDir(direction), railtype);
00675 AddSideToSignalBuffer(start_tile, INVALID_DIAGDIR, company);
00676 YapfNotifyTrackLayoutChange(start_tile, DiagDirToDiagTrack(direction));
00677 } else {
00678 if (c != NULL) {
00679 RoadType rt;
00680 FOR_EACH_SET_ROADTYPE(rt, rts ^ (IsTunnelTile(start_tile) ? GetRoadTypes(start_tile) : ROADTYPES_NONE)) {
00681 c->infrastructure.road[rt] += num_pieces * 2;
00682 }
00683 }
00684 MakeRoadTunnel(start_tile, company, direction, rts);
00685 MakeRoadTunnel(end_tile, company, ReverseDiagDir(direction), rts);
00686 }
00687 DirtyCompanyInfrastructureWindows(company);
00688 }
00689
00690 return cost;
00691 }
00692
00693
00699 static inline CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
00700 {
00701
00702 if (_current_company == OWNER_WATER || _game_mode == GM_EDITOR) return CommandCost();
00703
00704 switch (GetTunnelBridgeTransportType(tile)) {
00705 case TRANSPORT_ROAD: {
00706 RoadTypes rts = GetRoadTypes(tile);
00707 Owner road_owner = _current_company;
00708 Owner tram_owner = _current_company;
00709
00710 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
00711 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
00712
00713
00714 if (road_owner == OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
00715 return CheckTileOwnership(tile);
00716 }
00717 if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
00718 if (tram_owner == OWNER_NONE) tram_owner = _current_company;
00719
00720 CommandCost ret = CheckOwnership(road_owner, tile);
00721 if (ret.Succeeded()) ret = CheckOwnership(tram_owner, tile);
00722 return ret;
00723 }
00724
00725 case TRANSPORT_RAIL:
00726 return CheckOwnership(GetTileOwner(tile));
00727
00728 case TRANSPORT_WATER: {
00729
00730 Owner aqueduct_owner = GetTileOwner(tile);
00731 if (aqueduct_owner == OWNER_NONE) aqueduct_owner = _current_company;
00732 return CheckOwnership(aqueduct_owner);
00733 }
00734
00735 default: NOT_REACHED();
00736 }
00737 }
00738
00745 static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
00746 {
00747 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
00748 if (ret.Failed()) return ret;
00749
00750 TileIndex endtile = GetOtherTunnelEnd(tile);
00751
00752 ret = TunnelBridgeIsFree(tile, endtile);
00753 if (ret.Failed()) return ret;
00754
00755 _build_tunnel_endtile = endtile;
00756
00757 Town *t = NULL;
00758 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00759 t = ClosestTownFromTile(tile, UINT_MAX);
00760
00761
00762
00763 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
00764 if (ret.Failed()) return ret;
00765 }
00766
00767
00768
00769 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00770 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
00771 }
00772
00773 uint len = GetTunnelBridgeLength(tile, endtile) + 2;
00774
00775 if (flags & DC_EXEC) {
00776 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
00777
00778 DiagDirection dir = GetTunnelBridgeDirection(tile);
00779 Track track = DiagDirToDiagTrack(dir);
00780 Owner owner = GetTileOwner(tile);
00781
00782 Train *v = NULL;
00783 if (HasTunnelBridgeReservation(tile)) {
00784 v = GetTrainForReservation(tile, track);
00785 if (v != NULL) FreeTrainTrackReservation(v);
00786 }
00787
00788 if (Company::IsValidID(owner)) {
00789 Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00790 DirtyCompanyInfrastructureWindows(owner);
00791 }
00792
00793 DoClearSquare(tile);
00794 DoClearSquare(endtile);
00795
00796
00797 AddSideToSignalBuffer(tile, ReverseDiagDir(dir), owner);
00798 AddSideToSignalBuffer(endtile, dir, owner);
00799
00800 YapfNotifyTrackLayoutChange(tile, track);
00801 YapfNotifyTrackLayoutChange(endtile, track);
00802
00803 if (v != NULL) TryPathReserve(v);
00804 } else {
00805 RoadType rt;
00806 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
00807
00808 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
00809 if (c != NULL) {
00810 c->infrastructure.road[rt] -= len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00811 DirtyCompanyInfrastructureWindows(c->index);
00812 }
00813 }
00814
00815 DoClearSquare(tile);
00816 DoClearSquare(endtile);
00817 }
00818 }
00819 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_TUNNEL] * len);
00820 }
00821
00822
00829 static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
00830 {
00831 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
00832 if (ret.Failed()) return ret;
00833
00834 TileIndex endtile = GetOtherBridgeEnd(tile);
00835
00836 ret = TunnelBridgeIsFree(tile, endtile);
00837 if (ret.Failed()) return ret;
00838
00839 DiagDirection direction = GetTunnelBridgeDirection(tile);
00840 TileIndexDiff delta = TileOffsByDiagDir(direction);
00841
00842 Town *t = NULL;
00843 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00844 t = ClosestTownFromTile(tile, UINT_MAX);
00845
00846
00847
00848 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
00849 if (ret.Failed()) return ret;
00850 }
00851
00852
00853
00854 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00855 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
00856 }
00857
00858 Money base_cost = (GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) ? _price[PR_CLEAR_BRIDGE] : _price[PR_CLEAR_AQUEDUCT];
00859 uint len = GetTunnelBridgeLength(tile, endtile) + 2;
00860
00861 if (flags & DC_EXEC) {
00862
00863 bool rail = GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL;
00864 Owner owner = GetTileOwner(tile);
00865 int height = GetBridgeHeight(tile);
00866 Train *v = NULL;
00867
00868 if (rail && HasTunnelBridgeReservation(tile)) {
00869 v = GetTrainForReservation(tile, DiagDirToDiagTrack(direction));
00870 if (v != NULL) FreeTrainTrackReservation(v);
00871 }
00872
00873
00874 if (rail) {
00875 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00876 } else if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
00877 RoadType rt;
00878 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
00879 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
00880 if (c != NULL) {
00881
00882 c->infrastructure.road[rt] -= len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00883 DirtyCompanyInfrastructureWindows(c->index);
00884 }
00885 }
00886 } else {
00887 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.water -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00888 }
00889 DirtyCompanyInfrastructureWindows(owner);
00890
00891 DoClearSquare(tile);
00892 DoClearSquare(endtile);
00893 for (TileIndex c = tile + delta; c != endtile; c += delta) {
00894
00895 if (IsNormalRoadTile(c) && GetRoadside(c) == ROADSIDE_TREES) {
00896 int minz = GetTileMaxZ(c) + 3;
00897 if (height < minz) SetRoadside(c, ROADSIDE_PAVED);
00898 }
00899 ClearBridgeMiddle(c);
00900 MarkTileDirtyByTile(c);
00901 }
00902
00903 if (rail) {
00904
00905 AddSideToSignalBuffer(tile, ReverseDiagDir(direction), owner);
00906 AddSideToSignalBuffer(endtile, direction, owner);
00907
00908 Track track = DiagDirToDiagTrack(direction);
00909 YapfNotifyTrackLayoutChange(tile, track);
00910 YapfNotifyTrackLayoutChange(endtile, track);
00911
00912 if (v != NULL) TryPathReserve(v, true);
00913 }
00914 }
00915
00916 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
00917 }
00918
00925 static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
00926 {
00927 if (IsTunnel(tile)) {
00928 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_TUNNEL_FIRST);
00929 return DoClearTunnel(tile, flags);
00930 } else {
00931 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00932 return DoClearBridge(tile, flags);
00933 }
00934 }
00935
00946 static inline void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
00947 {
00948 static const int PILLAR_Z_OFFSET = TILE_HEIGHT - BRIDGE_Z_START;
00949 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);
00950 }
00951
00963 static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
00964 {
00965 int cur_z;
00966 for (cur_z = z_top; cur_z >= z_bottom; cur_z -= TILE_HEIGHT) {
00967 DrawPillar(psid, x, y, cur_z, w, h, NULL);
00968 }
00969 return cur_z;
00970 }
00971
00983 static void DrawBridgePillars(const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
00984 {
00985 static const int bounding_box_size[2] = {16, 2};
00986 static const int back_pillar_offset[2] = { 0, 9};
00987
00988 static const int INF = 1000;
00989 static const SubSprite half_pillar_sub_sprite[2][2] = {
00990 { { -14, -INF, INF, INF }, { -INF, -INF, -15, INF } },
00991 { { -INF, -INF, 15, INF }, { 16, -INF, INF, INF } },
00992 };
00993
00994 if (psid->sprite == 0) return;
00995
00996
00997 DiagDirection south_dir = AxisToDiagDir(axis);
00998 int z_front_north = ti->z;
00999 int z_back_north = ti->z;
01000 int z_front_south = ti->z;
01001 int z_back_south = ti->z;
01002 GetSlopePixelZOnEdge(ti->tileh, south_dir, &z_front_south, &z_back_south);
01003 GetSlopePixelZOnEdge(ti->tileh, ReverseDiagDir(south_dir), &z_front_north, &z_back_north);
01004
01005
01006 int z_front = max(z_front_north, z_front_south);
01007 int z_back = max(z_back_north, z_back_south);
01008
01009
01010 int w = bounding_box_size[axis];
01011 int h = bounding_box_size[OtherAxis(axis)];
01012
01013 int x_back = x - back_pillar_offset[axis];
01014 int y_back = y - back_pillar_offset[OtherAxis(axis)];
01015
01016
01017 int bottom_z = DrawPillarColumn(z_front, z_bridge, psid, x, y, w, h);
01018 if (z_front_north < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
01019 if (z_front_south < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
01020
01021
01022 int z_bridge_back = z_bridge - 2 * (int)TILE_HEIGHT;
01023 if (drawfarpillar && (z_back_north <= z_bridge_back || z_back_south <= z_bridge_back)) {
01024 bottom_z = DrawPillarColumn(z_back, z_bridge_back, psid, x_back, y_back, w, h);
01025 if (z_back_north < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
01026 if (z_back_south < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
01027 }
01028 }
01029
01039 static void DrawBridgeTramBits(int x, int y, int z, int offset, bool overlay, bool head)
01040 {
01041 static const SpriteID tram_offsets[2][6] = { { 107, 108, 109, 110, 111, 112 }, { 4, 5, 15, 16, 17, 18 } };
01042 static const SpriteID back_offsets[6] = { 95, 96, 99, 102, 100, 101 };
01043 static const SpriteID front_offsets[6] = { 97, 98, 103, 106, 104, 105 };
01044
01045 static const uint size_x[6] = { 1, 16, 16, 1, 16, 1 };
01046 static const uint size_y[6] = { 16, 1, 1, 16, 1, 16 };
01047 static const uint front_bb_offset_x[6] = { 15, 0, 0, 15, 0, 15 };
01048 static const uint front_bb_offset_y[6] = { 0, 15, 15, 0, 15, 0 };
01049
01050
01051
01052 if (head || !IsInvisibilitySet(TO_BRIDGES)) {
01053 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + tram_offsets[overlay][offset], PAL_NONE,
01054 x, y, size_x[offset], size_y[offset], 0x28, z,
01055 !head && IsTransparencySet(TO_BRIDGES));
01056 }
01057
01058
01059 if (!IsInvisibilitySet(TO_CATENARY)) {
01060 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + back_offsets[offset], PAL_NONE,
01061 x, y, size_x[offset], size_y[offset], 0x28, z,
01062 IsTransparencySet(TO_CATENARY));
01063 }
01064
01065
01066 EndSpriteCombine();
01067 StartSpriteCombine();
01068
01069
01070 if (!IsInvisibilitySet(TO_CATENARY)) {
01071 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + front_offsets[offset], PAL_NONE,
01072 x, y, size_x[offset] + front_bb_offset_x[offset], size_y[offset] + front_bb_offset_y[offset], 0x28, z,
01073 IsTransparencySet(TO_CATENARY), front_bb_offset_x[offset], front_bb_offset_y[offset]);
01074 }
01075 }
01076
01090 static void DrawTile_TunnelBridge(TileInfo *ti)
01091 {
01092 TransportType transport_type = GetTunnelBridgeTransportType(ti->tile);
01093 DiagDirection tunnelbridge_direction = GetTunnelBridgeDirection(ti->tile);
01094
01095 if (IsTunnel(ti->tile)) {
01096
01097
01098
01099
01100
01101
01102
01103
01104
01105 static const int _tunnel_BB[4][12] = {
01106
01107
01108 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 },
01109 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 },
01110 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 },
01111 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 },
01112 };
01113 const int *BB_data = _tunnel_BB[tunnelbridge_direction];
01114
01115 bool catenary = false;
01116
01117 SpriteID image;
01118 SpriteID railtype_overlay = 0;
01119 if (transport_type == TRANSPORT_RAIL) {
01120 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01121 image = rti->base_sprites.tunnel;
01122 if (rti->UsesOverlay()) {
01123
01124 railtype_overlay = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL_PORTAL);
01125 if (railtype_overlay != 0) image = SPR_RAILTYPE_TUNNEL_BASE;
01126 }
01127 } else {
01128 image = SPR_TUNNEL_ENTRY_REAR_ROAD;
01129 }
01130
01131 if (HasTunnelBridgeSnowOrDesert(ti->tile)) image += railtype_overlay != 0 ? 8 : 32;
01132
01133 image += tunnelbridge_direction * 2;
01134 DrawGroundSprite(image, PAL_NONE);
01135
01136 if (transport_type == TRANSPORT_ROAD) {
01137 RoadTypes rts = GetRoadTypes(ti->tile);
01138
01139 if (HasBit(rts, ROADTYPE_TRAM)) {
01140 static const SpriteID tunnel_sprites[2][4] = { { 28, 78, 79, 27 }, { 5, 76, 77, 4 } };
01141
01142 DrawGroundSprite(SPR_TRAMWAY_BASE + tunnel_sprites[rts - ROADTYPES_TRAM][tunnelbridge_direction], PAL_NONE);
01143
01144
01145 if (!IsInvisibilitySet(TO_CATENARY)) {
01146 catenary = true;
01147 StartSpriteCombine();
01148 AddSortableSpriteToDraw(SPR_TRAMWAY_TUNNEL_WIRES + 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);
01149 }
01150 }
01151 } else {
01152 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01153 if (rti->UsesOverlay()) {
01154 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL);
01155 if (surface != 0) DrawGroundSprite(surface + tunnelbridge_direction, PAL_NONE);
01156 }
01157
01158
01159 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
01160 DrawGroundSprite(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
01161 }
01162
01163 if (HasCatenaryDrawn(GetRailType(ti->tile))) {
01164
01165 DrawCatenary(ti);
01166
01167 catenary = true;
01168 StartSpriteCombine();
01169
01170 DrawCatenaryOnTunnel(ti);
01171 }
01172 }
01173
01174 if (railtype_overlay != 0 && !catenary) StartSpriteCombine();
01175
01176 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);
01177
01178 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);
01179
01180 if (catenary || railtype_overlay != 0) EndSpriteCombine();
01181
01182
01183 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x, ti->y, BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
01184 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);
01185
01186 DrawBridgeMiddle(ti);
01187 } else {
01188 const PalSpriteID *psid;
01189 int base_offset;
01190 bool ice = HasTunnelBridgeSnowOrDesert(ti->tile);
01191
01192 if (transport_type == TRANSPORT_RAIL) {
01193 base_offset = GetRailTypeInfo(GetRailType(ti->tile))->bridge_offset;
01194 assert(base_offset != 8);
01195 } else {
01196 base_offset = 8;
01197 }
01198
01199
01200 assert( (base_offset & 0x07) == 0x00);
01201
01202 DrawFoundation(ti, GetBridgeFoundation(ti->tileh, DiagDirToAxis(tunnelbridge_direction)));
01203
01204
01205 base_offset += (6 - tunnelbridge_direction) % 4;
01206
01207 if (ti->tileh == SLOPE_FLAT) base_offset += 4;
01208
01209
01210 if (transport_type != TRANSPORT_WATER) {
01211 psid = &GetBridgeSpriteTable(GetBridgeType(ti->tile), BRIDGE_PIECE_HEAD)[base_offset];
01212 } else {
01213 psid = _aqueduct_sprites + base_offset;
01214 }
01215
01216 if (!ice) {
01217 TileIndex next = ti->tile + TileOffsByDiagDir(tunnelbridge_direction);
01218 if (ti->tileh != SLOPE_FLAT && ti->z == 0 && HasTileWaterClass(next) && GetWaterClass(next) == WATER_CLASS_SEA) {
01219 DrawShoreTile(ti->tileh);
01220 } else {
01221 DrawClearLandTile(ti, 3);
01222 }
01223 } else {
01224 DrawGroundSprite(SPR_FLAT_SNOW_DESERT_TILE + SlopeToSpriteOffset(ti->tileh), PAL_NONE);
01225 }
01226
01227
01228
01229
01230 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
01231
01232
01233
01234
01235
01236 AddSortableSpriteToDraw(psid->sprite, psid->pal, ti->x, ti->y, 16, 16, ti->tileh == SLOPE_FLAT ? 0 : 8, ti->z);
01237
01238 if (transport_type == TRANSPORT_ROAD) {
01239 RoadTypes rts = GetRoadTypes(ti->tile);
01240
01241 if (HasBit(rts, ROADTYPE_TRAM)) {
01242 uint offset = tunnelbridge_direction;
01243 int z = ti->z;
01244 if (ti->tileh != SLOPE_FLAT) {
01245 offset = (offset + 1) & 1;
01246 z += TILE_HEIGHT;
01247 } else {
01248 offset += 2;
01249 }
01250
01251 DrawBridgeTramBits(ti->x, ti->y, z, offset, HasBit(rts, ROADTYPE_ROAD), true);
01252 }
01253 EndSpriteCombine();
01254 } else if (transport_type == TRANSPORT_RAIL) {
01255 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01256 if (rti->UsesOverlay()) {
01257 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_BRIDGE);
01258 if (surface != 0) {
01259 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
01260 AddSortableSpriteToDraw(surface + ((DiagDirToAxis(tunnelbridge_direction) == AXIS_X) ? RTBO_X : RTBO_Y), PAL_NONE, ti->x, ti->y, 16, 16, 0, ti->z + 8);
01261 } else {
01262 AddSortableSpriteToDraw(surface + RTBO_SLOPE + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, 16, 16, 8, ti->z);
01263 }
01264 }
01265
01266
01267
01268 }
01269
01270
01271 if (_game_mode != GM_MENU &&_settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
01272 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
01273 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);
01274 } else {
01275 AddSortableSpriteToDraw(rti->base_sprites.single_sloped + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
01276 }
01277 }
01278
01279 EndSpriteCombine();
01280 if (HasCatenaryDrawn(GetRailType(ti->tile))) {
01281 DrawCatenary(ti);
01282 }
01283 }
01284
01285 DrawBridgeMiddle(ti);
01286 }
01287 }
01288
01289
01308 static BridgePieces CalcBridgePiece(uint north, uint south)
01309 {
01310 if (north == 1) {
01311 return BRIDGE_PIECE_NORTH;
01312 } else if (south == 1) {
01313 return BRIDGE_PIECE_SOUTH;
01314 } else if (north < south) {
01315 return north & 1 ? BRIDGE_PIECE_INNER_SOUTH : BRIDGE_PIECE_INNER_NORTH;
01316 } else if (north > south) {
01317 return south & 1 ? BRIDGE_PIECE_INNER_NORTH : BRIDGE_PIECE_INNER_SOUTH;
01318 } else {
01319 return north & 1 ? BRIDGE_PIECE_MIDDLE_EVEN : BRIDGE_PIECE_MIDDLE_ODD;
01320 }
01321 }
01322
01327 void DrawBridgeMiddle(const TileInfo *ti)
01328 {
01329
01330
01331
01332
01333
01334
01335
01336
01337
01338
01339
01340
01341
01342
01343
01344
01345 if (!IsBridgeAbove(ti->tile)) return;
01346
01347 TileIndex rampnorth = GetNorthernBridgeEnd(ti->tile);
01348 TileIndex rampsouth = GetSouthernBridgeEnd(ti->tile);
01349 TransportType transport_type = GetTunnelBridgeTransportType(rampsouth);
01350
01351 Axis axis = GetBridgeAxis(ti->tile);
01352 BridgePieces piece = CalcBridgePiece(
01353 GetTunnelBridgeLength(ti->tile, rampnorth) + 1,
01354 GetTunnelBridgeLength(ti->tile, rampsouth) + 1
01355 );
01356
01357 const PalSpriteID *psid;
01358 bool drawfarpillar;
01359 if (transport_type != TRANSPORT_WATER) {
01360 BridgeType type = GetBridgeType(rampsouth);
01361 drawfarpillar = !HasBit(GetBridgeSpec(type)->flags, 0);
01362
01363 uint base_offset;
01364 if (transport_type == TRANSPORT_RAIL) {
01365 base_offset = GetRailTypeInfo(GetRailType(rampsouth))->bridge_offset;
01366 } else {
01367 base_offset = 8;
01368 }
01369
01370 psid = base_offset + GetBridgeSpriteTable(type, piece);
01371 } else {
01372 drawfarpillar = true;
01373 psid = _aqueduct_sprites;
01374 }
01375
01376 if (axis != AXIS_X) psid += 4;
01377
01378 int x = ti->x;
01379 int y = ti->y;
01380 uint bridge_z = GetBridgePixelHeight(rampsouth);
01381 int z = bridge_z - BRIDGE_Z_START;
01382
01383
01384 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, x, y, 16, 16, 1, bridge_z - TILE_HEIGHT + BB_Z_SEPARATOR);
01385
01386
01387 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
01388
01389
01390 if (!IsInvisibilitySet(TO_BRIDGES)) {
01391 if (axis == AXIS_X) {
01392 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 1, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
01393 } else {
01394 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 1, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
01395 }
01396 }
01397
01398 psid++;
01399
01400 if (transport_type == TRANSPORT_ROAD) {
01401 RoadTypes rts = GetRoadTypes(rampsouth);
01402
01403 if (HasBit(rts, ROADTYPE_TRAM)) {
01404
01405 DrawBridgeTramBits(x, y, bridge_z, axis ^ 1, HasBit(rts, ROADTYPE_ROAD), false);
01406 } else {
01407 EndSpriteCombine();
01408 StartSpriteCombine();
01409 }
01410 } else if (transport_type == TRANSPORT_RAIL) {
01411 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(rampsouth));
01412 if (rti->UsesOverlay() && !IsInvisibilitySet(TO_BRIDGES)) {
01413 SpriteID surface = GetCustomRailSprite(rti, rampsouth, RTSG_BRIDGE, TCX_ON_BRIDGE);
01414 if (surface != 0) {
01415 AddSortableSpriteToDraw(surface + axis, PAL_NONE, x, y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
01416 }
01417 }
01418 EndSpriteCombine();
01419
01420 if (HasCatenaryDrawn(GetRailType(rampsouth))) {
01421 DrawCatenaryOnBridge(ti);
01422 }
01423 }
01424
01425
01426 if (!IsInvisibilitySet(TO_BRIDGES)) {
01427 if (axis == AXIS_X) {
01428 y += 12;
01429 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 4, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 3, BRIDGE_Z_START);
01430 } else {
01431 x += 12;
01432 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 4, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 3, 0, BRIDGE_Z_START);
01433 }
01434 }
01435
01436
01437 if (transport_type == TRANSPORT_ROAD) EndSpriteCombine();
01438
01439
01440 if (IsInvisibilitySet(TO_BRIDGES)) return;
01441
01442 psid++;
01443 if (ti->z + 5 == z) {
01444
01445 if (psid->sprite != 0) {
01446 SpriteID image = psid->sprite;
01447 SpriteID pal = psid->pal;
01448 if (IsTransparencySet(TO_BRIDGES)) {
01449 SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
01450 pal = PALETTE_TO_TRANSPARENT;
01451 }
01452
01453 DrawGroundSpriteAt(image, pal, x - ti->x, y - ti->y, z - ti->z);
01454 }
01455 } else {
01456
01457 DrawBridgePillars(psid, ti, axis, drawfarpillar, x, y, z);
01458 }
01459 }
01460
01461
01462 static int GetSlopePixelZ_TunnelBridge(TileIndex tile, uint x, uint y)
01463 {
01464 int z;
01465 Slope tileh = GetTilePixelSlope(tile, &z);
01466
01467 x &= 0xF;
01468 y &= 0xF;
01469
01470 if (IsTunnel(tile)) {
01471 uint pos = (DiagDirToAxis(GetTunnelBridgeDirection(tile)) == AXIS_X ? y : x);
01472
01473
01474 if (5 <= pos && pos <= 10) return z;
01475 } else {
01476 DiagDirection dir = GetTunnelBridgeDirection(tile);
01477 uint pos = (DiagDirToAxis(dir) == AXIS_X ? y : x);
01478
01479 z += ApplyPixelFoundationToSlope(GetBridgeFoundation(tileh, DiagDirToAxis(dir)), &tileh);
01480
01481
01482 if (5 <= pos && pos <= 10) {
01483 int delta;
01484
01485 if (tileh != SLOPE_FLAT) return z + TILE_HEIGHT;
01486
01487 switch (dir) {
01488 default: NOT_REACHED();
01489 case DIAGDIR_NE: delta = (TILE_SIZE - 1 - x) / 2; break;
01490 case DIAGDIR_SE: delta = y / 2; break;
01491 case DIAGDIR_SW: delta = x / 2; break;
01492 case DIAGDIR_NW: delta = (TILE_SIZE - 1 - y) / 2; break;
01493 }
01494 return z + 1 + delta;
01495 }
01496 }
01497
01498 return z + GetPartialPixelZ(x, y, tileh);
01499 }
01500
01501 static Foundation GetFoundation_TunnelBridge(TileIndex tile, Slope tileh)
01502 {
01503 return IsTunnel(tile) ? FOUNDATION_NONE : GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(tile)));
01504 }
01505
01506 static void GetTileDesc_TunnelBridge(TileIndex tile, TileDesc *td)
01507 {
01508 TransportType tt = GetTunnelBridgeTransportType(tile);
01509
01510 if (IsTunnel(tile)) {
01511 td->str = (tt == TRANSPORT_RAIL) ? STR_LAI_TUNNEL_DESCRIPTION_RAILROAD : STR_LAI_TUNNEL_DESCRIPTION_ROAD;
01512 } else {
01513 td->str = (tt == TRANSPORT_WATER) ? STR_LAI_BRIDGE_DESCRIPTION_AQUEDUCT : GetBridgeSpec(GetBridgeType(tile))->transport_name[tt];
01514 }
01515 td->owner[0] = GetTileOwner(tile);
01516
01517 Owner road_owner = INVALID_OWNER;
01518 Owner tram_owner = INVALID_OWNER;
01519 RoadTypes rts = GetRoadTypes(tile);
01520 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01521 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01522
01523
01524 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
01525 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
01526 uint i = 1;
01527 if (road_owner != INVALID_OWNER) {
01528 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
01529 td->owner[i] = road_owner;
01530 i++;
01531 }
01532 if (tram_owner != INVALID_OWNER) {
01533 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
01534 td->owner[i] = tram_owner;
01535 }
01536 }
01537
01538 if (tt == TRANSPORT_RAIL) {
01539 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
01540 td->rail_speed = rti->max_speed;
01541
01542 if (!IsTunnel(tile)) {
01543 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
01544 if (td->rail_speed == 0 || spd < td->rail_speed) {
01545 td->rail_speed = spd;
01546 }
01547 }
01548 }
01549 }
01550
01551
01552 static void TileLoop_TunnelBridge(TileIndex tile)
01553 {
01554 bool snow_or_desert = HasTunnelBridgeSnowOrDesert(tile);
01555 switch (_settings_game.game_creation.landscape) {
01556 case LT_ARCTIC: {
01557
01558
01559
01560 int z = IsBridge(tile) ? GetTileMaxZ(tile) : GetTileZ(tile);
01561 if (snow_or_desert != (z > GetSnowLine())) {
01562 SetTunnelBridgeSnowOrDesert(tile, !snow_or_desert);
01563 MarkTileDirtyByTile(tile);
01564 }
01565 break;
01566 }
01567
01568 case LT_TROPIC:
01569 if (GetTropicZone(tile) == TROPICZONE_DESERT && !snow_or_desert) {
01570 SetTunnelBridgeSnowOrDesert(tile, true);
01571 MarkTileDirtyByTile(tile);
01572 }
01573 break;
01574
01575 default:
01576 break;
01577 }
01578 }
01579
01580 static TrackStatus GetTileTrackStatus_TunnelBridge(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01581 {
01582 TransportType transport_type = GetTunnelBridgeTransportType(tile);
01583 if (transport_type != mode || (transport_type == TRANSPORT_ROAD && (GetRoadTypes(tile) & sub_mode) == 0)) return 0;
01584
01585 DiagDirection dir = GetTunnelBridgeDirection(tile);
01586 if (side != INVALID_DIAGDIR && side != ReverseDiagDir(dir)) return 0;
01587 return CombineTrackStatus(TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir)), TRACKDIR_BIT_NONE);
01588 }
01589
01590 static void ChangeTileOwner_TunnelBridge(TileIndex tile, Owner old_owner, Owner new_owner)
01591 {
01592 TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
01593
01594
01595 uint num_pieces = tile < other_end ? (GetTunnelBridgeLength(tile, other_end) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR : 0;
01596
01597 for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01598
01599 if (GetRoadOwner(tile, rt) == old_owner) {
01600 if (HasBit(GetRoadTypes(tile), rt)) {
01601
01602
01603 Company::Get(old_owner)->infrastructure.road[rt] -= num_pieces * 2;
01604 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += num_pieces * 2;
01605 }
01606
01607 SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01608 }
01609 }
01610
01611 if (!IsTileOwner(tile, old_owner)) return;
01612
01613
01614
01615 TransportType tt = GetTunnelBridgeTransportType(tile);
01616 Company *old = Company::Get(old_owner);
01617 if (tt == TRANSPORT_RAIL) {
01618 old->infrastructure.rail[GetRailType(tile)] -= num_pieces;
01619 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.rail[GetRailType(tile)] += num_pieces;
01620 } else if (tt == TRANSPORT_WATER) {
01621 old->infrastructure.water -= num_pieces;
01622 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.water += num_pieces;
01623 }
01624
01625 if (new_owner != INVALID_OWNER) {
01626 SetTileOwner(tile, new_owner);
01627 } else {
01628 if (tt == TRANSPORT_RAIL) {
01629
01630
01631 CommandCost ret = DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01632 assert(ret.Succeeded());
01633 } else {
01634
01635 SetTileOwner(tile, OWNER_NONE);
01636 }
01637 }
01638 }
01639
01645 static const byte TUNNEL_SOUND_FRAME = 1;
01646
01655 extern const byte _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12};
01656
01657 static VehicleEnterTileStatus VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
01658 {
01659 int z = GetSlopePixelZ(x, y) - v->z_pos;
01660
01661 if (abs(z) > 2) return VETSB_CANNOT_ENTER;
01662
01663 const DiagDirection dir = GetTunnelBridgeDirection(tile);
01664
01665 const DiagDirection vdir = DirToDiagDir(v->direction);
01666
01667 byte pos = (DiagDirToAxis(vdir) == AXIS_X ? x : y) & TILE_UNIT_MASK;
01668
01669 byte frame = (vdir == DIAGDIR_NE || vdir == DIAGDIR_NW) ? TILE_SIZE - 1 - pos : pos;
01670
01671 if (IsTunnel(tile)) {
01672 if (v->type == VEH_TRAIN) {
01673 Train *t = Train::From(v);
01674
01675 if (t->track != TRACK_BIT_WORMHOLE && dir == vdir) {
01676 if (t->IsFrontEngine() && frame == TUNNEL_SOUND_FRAME) {
01677 if (!PlayVehicleSound(t, VSE_TUNNEL) && RailVehInfo(t->engine_type)->engclass == 0) {
01678 SndPlayVehicleFx(SND_05_TRAIN_THROUGH_TUNNEL, v);
01679 }
01680 return VETSB_CONTINUE;
01681 }
01682 if (frame == _tunnel_visibility_frame[dir]) {
01683 t->tile = tile;
01684 t->track = TRACK_BIT_WORMHOLE;
01685 t->vehstatus |= VS_HIDDEN;
01686 return VETSB_ENTERED_WORMHOLE;
01687 }
01688 }
01689
01690 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
01691
01692 t->tile = tile;
01693 t->track = DiagDirToDiagTrackBits(vdir);
01694 assert(t->track);
01695 t->vehstatus &= ~VS_HIDDEN;
01696 return VETSB_ENTERED_WORMHOLE;
01697 }
01698 } else if (v->type == VEH_ROAD) {
01699 RoadVehicle *rv = RoadVehicle::From(v);
01700
01701
01702 if (rv->state != RVSB_WORMHOLE && dir == vdir) {
01703 if (frame == _tunnel_visibility_frame[dir]) {
01704
01705 assert(frame == rv->frame + 1);
01706 rv->tile = tile;
01707 rv->state = RVSB_WORMHOLE;
01708 rv->vehstatus |= VS_HIDDEN;
01709 return VETSB_ENTERED_WORMHOLE;
01710 } else {
01711 return VETSB_CONTINUE;
01712 }
01713 }
01714
01715
01716 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
01717 rv->tile = tile;
01718 rv->state = DiagDirToDiagTrackdir(vdir);
01719 rv->frame = frame;
01720 rv->vehstatus &= ~VS_HIDDEN;
01721 return VETSB_ENTERED_WORMHOLE;
01722 }
01723 }
01724 } else {
01725 if (v->type != VEH_SHIP) {
01726
01727 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
01728
01729 if (v->type == VEH_ROAD) spd *= 2;
01730 Vehicle *first = v->First();
01731 first->cur_speed = min(first->cur_speed, spd);
01732 }
01733
01734 if (vdir == dir) {
01735
01736 if (frame != TILE_SIZE - 1) return VETSB_CONTINUE;
01737 switch (v->type) {
01738 case VEH_TRAIN: {
01739 Train *t = Train::From(v);
01740 t->track = TRACK_BIT_WORMHOLE;
01741 ClrBit(t->gv_flags, GVF_GOINGUP_BIT);
01742 ClrBit(t->gv_flags, GVF_GOINGDOWN_BIT);
01743 break;
01744 }
01745
01746 case VEH_ROAD: {
01747 RoadVehicle *rv = RoadVehicle::From(v);
01748 rv->state = RVSB_WORMHOLE;
01749
01750 ClrBit(rv->gv_flags, GVF_GOINGUP_BIT);
01751 ClrBit(rv->gv_flags, GVF_GOINGDOWN_BIT);
01752 break;
01753 }
01754
01755 case VEH_SHIP:
01756 Ship::From(v)->state = TRACK_BIT_WORMHOLE;
01757 break;
01758
01759 default: NOT_REACHED();
01760 }
01761 return VETSB_ENTERED_WORMHOLE;
01762 } else if (vdir == ReverseDiagDir(dir)) {
01763 v->tile = tile;
01764 switch (v->type) {
01765 case VEH_TRAIN: {
01766 Train *t = Train::From(v);
01767 if (t->track == TRACK_BIT_WORMHOLE) {
01768 t->track = DiagDirToDiagTrackBits(vdir);
01769 return VETSB_ENTERED_WORMHOLE;
01770 }
01771 break;
01772 }
01773
01774 case VEH_ROAD: {
01775 RoadVehicle *rv = RoadVehicle::From(v);
01776 if (rv->state == RVSB_WORMHOLE) {
01777 rv->state = DiagDirToDiagTrackdir(vdir);
01778 rv->frame = 0;
01779 return VETSB_ENTERED_WORMHOLE;
01780 }
01781 break;
01782 }
01783
01784 case VEH_SHIP: {
01785 Ship *ship = Ship::From(v);
01786 if (ship->state == TRACK_BIT_WORMHOLE) {
01787 ship->state = DiagDirToDiagTrackBits(vdir);
01788 return VETSB_ENTERED_WORMHOLE;
01789 }
01790 break;
01791 }
01792
01793 default: NOT_REACHED();
01794 }
01795 }
01796 }
01797 return VETSB_CONTINUE;
01798 }
01799
01800 static CommandCost TerraformTile_TunnelBridge(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
01801 {
01802 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && IsBridge(tile) && GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) {
01803 DiagDirection direction = GetTunnelBridgeDirection(tile);
01804 Axis axis = DiagDirToAxis(direction);
01805 CommandCost res;
01806 int z_old;
01807 Slope tileh_old = GetTileSlope(tile, &z_old);
01808
01809
01810 if ((direction == DIAGDIR_NW) || (direction == DIAGDIR_NE)) {
01811 CheckBridgeSlopeSouth(axis, &tileh_old, &z_old);
01812 res = CheckBridgeSlopeSouth(axis, &tileh_new, &z_new);
01813 } else {
01814 CheckBridgeSlopeNorth(axis, &tileh_old, &z_old);
01815 res = CheckBridgeSlopeNorth(axis, &tileh_new, &z_new);
01816 }
01817
01818
01819 if (res.Succeeded() && (z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
01820 }
01821
01822 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01823 }
01824
01825 extern const TileTypeProcs _tile_type_tunnelbridge_procs = {
01826 DrawTile_TunnelBridge,
01827 GetSlopePixelZ_TunnelBridge,
01828 ClearTile_TunnelBridge,
01829 NULL,
01830 GetTileDesc_TunnelBridge,
01831 GetTileTrackStatus_TunnelBridge,
01832 NULL,
01833 NULL,
01834 TileLoop_TunnelBridge,
01835 ChangeTileOwner_TunnelBridge,
01836 NULL,
01837 VehicleEnter_TunnelBridge,
01838 GetFoundation_TunnelBridge,
01839 TerraformTile_TunnelBridge,
01840 };