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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->cache.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 _game_mode != GM_EDITOR) {
00312 Town *t = ClosestTownFromTile(tile_start, UINT_MAX);
00313
00314 if (t == NULL) {
00315 return CMD_ERROR;
00316 } else {
00317 SetDParam(0, t->index);
00318 return_cmd_error(STR_ERROR_LOCAL_AUTHORITY_REFUSES_TO_ALLOW_THIS);
00319 }
00320 }
00321
00322
00323 if (!(flags & DC_QUERY_COST) && (bridge_type == GetBridgeType(tile_start)) && (transport_type != TRANSPORT_ROAD || (roadtypes & ~GetRoadTypes(tile_start)) == 0)) {
00324 return_cmd_error(STR_ERROR_ALREADY_BUILT);
00325 }
00326
00327
00328 if (!IsTileOwner(tile_start, company) && !IsTileOwner(tile_start, OWNER_TOWN)) {
00329 return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER);
00330 }
00331
00332 cost.AddCost((bridge_len + 1) * _price[PR_CLEAR_BRIDGE]);
00333 owner = GetTileOwner(tile_start);
00334
00335 switch (transport_type) {
00336 case TRANSPORT_RAIL:
00337
00338 pbs_reservation = HasTunnelBridgeReservation(tile_start);
00339 break;
00340
00341 case TRANSPORT_ROAD:
00342
00343 roadtypes |= GetRoadTypes(tile_start);
00344 break;
00345
00346 default: break;
00347 }
00348 } else {
00349
00350
00351 bool allow_on_slopes = (_settings_game.construction.build_on_slopes && transport_type != TRANSPORT_WATER);
00352
00353
00354 CommandCost ret = DoCommand(tile_start, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00355 if (ret.Failed()) return ret;
00356 cost = ret;
00357
00358 if (terraform_cost_north.Failed() || (terraform_cost_north.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
00359 cost.AddCost(terraform_cost_north);
00360
00361
00362 ret = DoCommand(tile_end, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00363 if (ret.Failed()) return ret;
00364 cost.AddCost(ret);
00365
00366
00367 if (terraform_cost_south.Failed() || (terraform_cost_south.GetCost() != 0 && !allow_on_slopes)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
00368 cost.AddCost(terraform_cost_south);
00369
00370 const TileIndex heads[] = {tile_start, tile_end};
00371 for (int i = 0; i < 2; i++) {
00372 if (MayHaveBridgeAbove(heads[i])) {
00373 if (IsBridgeAbove(heads[i])) {
00374 TileIndex north_head = GetNorthernBridgeEnd(heads[i]);
00375
00376 if (direction == GetBridgeAxis(heads[i])) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00377
00378 if (z_start + 1 == GetBridgeHeight(north_head)) {
00379 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00380 }
00381 }
00382 }
00383 }
00384
00385 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
00386 for (TileIndex tile = tile_start + delta; tile != tile_end; tile += delta) {
00387 if (GetTileMaxZ(tile) > z_start) return_cmd_error(STR_ERROR_BRIDGE_TOO_LOW_FOR_TERRAIN);
00388
00389 if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) {
00390
00391 return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00392 }
00393
00394 switch (GetTileType(tile)) {
00395 case MP_WATER:
00396 if (!IsWater(tile) && !IsCoast(tile)) goto not_valid_below;
00397 break;
00398
00399 case MP_RAILWAY:
00400 if (!IsPlainRail(tile)) goto not_valid_below;
00401 break;
00402
00403 case MP_ROAD:
00404 if (IsRoadDepot(tile)) goto not_valid_below;
00405 break;
00406
00407 case MP_TUNNELBRIDGE:
00408 if (IsTunnel(tile)) break;
00409 if (direction == DiagDirToAxis(GetTunnelBridgeDirection(tile))) goto not_valid_below;
00410 if (z_start < GetBridgeHeight(tile)) goto not_valid_below;
00411 break;
00412
00413 case MP_OBJECT: {
00414 const ObjectSpec *spec = ObjectSpec::GetByTile(tile);
00415 if ((spec->flags & OBJECT_FLAG_ALLOW_UNDER_BRIDGE) == 0) goto not_valid_below;
00416 if (GetTileMaxZ(tile) + spec->height > z_start) goto not_valid_below;
00417 break;
00418 }
00419
00420 case MP_CLEAR:
00421 break;
00422
00423 default:
00424 not_valid_below:;
00425
00426 ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00427 if (ret.Failed()) return ret;
00428 cost.AddCost(ret);
00429 break;
00430 }
00431
00432 if (flags & DC_EXEC) {
00433
00434
00435
00436 SetBridgeMiddle(tile, direction);
00437 }
00438 }
00439
00440 owner = company;
00441 }
00442
00443
00444 if (flags & DC_EXEC) {
00445 DiagDirection dir = AxisToDiagDir(direction);
00446
00447 Company *c = Company::GetIfValid(owner);
00448 switch (transport_type) {
00449 case TRANSPORT_RAIL:
00450
00451 if (!IsBridgeTile(tile_start) && c != NULL) c->infrastructure.rail[railtype] += (bridge_len + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00452 MakeRailBridgeRamp(tile_start, owner, bridge_type, dir, railtype);
00453 MakeRailBridgeRamp(tile_end, owner, bridge_type, ReverseDiagDir(dir), railtype);
00454 SetTunnelBridgeReservation(tile_start, pbs_reservation);
00455 SetTunnelBridgeReservation(tile_end, pbs_reservation);
00456 break;
00457
00458 case TRANSPORT_ROAD: {
00459 RoadTypes prev_roadtypes = IsBridgeTile(tile_start) ? GetRoadTypes(tile_start) : ROADTYPES_NONE;
00460 if (c != NULL) {
00461
00462 RoadType new_rt;
00463 FOR_EACH_SET_ROADTYPE(new_rt, roadtypes ^ prev_roadtypes) {
00464
00465 Company::Get(owner)->infrastructure.road[new_rt] += (bridge_len + 2) * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00466 }
00467 }
00468 Owner owner_road = owner;
00469 Owner owner_tram = owner;
00470 if (HasBit(prev_roadtypes, ROADTYPE_ROAD)) owner_road = GetRoadOwner(tile_start, ROADTYPE_ROAD);
00471 if (HasBit(prev_roadtypes, ROADTYPE_TRAM)) owner_tram = GetRoadOwner(tile_start, ROADTYPE_TRAM);
00472 MakeRoadBridgeRamp(tile_start, owner, owner_road, owner_tram, bridge_type, dir, roadtypes);
00473 MakeRoadBridgeRamp(tile_end, owner, owner_road, owner_tram, bridge_type, ReverseDiagDir(dir), roadtypes);
00474 break;
00475 }
00476
00477 case TRANSPORT_WATER:
00478 if (!IsBridgeTile(tile_start) && c != NULL) c->infrastructure.water += (bridge_len + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00479 MakeAqueductBridgeRamp(tile_start, owner, dir);
00480 MakeAqueductBridgeRamp(tile_end, owner, ReverseDiagDir(dir));
00481 break;
00482
00483 default:
00484 NOT_REACHED();
00485 }
00486
00487
00488 TileIndexDiff delta = (direction == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
00489 for (TileIndex tile = tile_start; tile <= tile_end; tile += delta) {
00490 MarkTileDirtyByTile(tile);
00491 }
00492 DirtyCompanyInfrastructureWindows(owner);
00493 }
00494
00495 if ((flags & DC_EXEC) && transport_type == TRANSPORT_RAIL) {
00496 Track track = AxisToTrack(direction);
00497 AddSideToSignalBuffer(tile_start, INVALID_DIAGDIR, company);
00498 YapfNotifyTrackLayoutChange(tile_start, track);
00499 }
00500
00501
00502
00503
00504
00505 Company *c = Company::GetIfValid(company);
00506 if (!(flags & DC_QUERY_COST) || (c != NULL && c->is_ai)) {
00507 bridge_len += 2;
00508
00509 switch (transport_type) {
00510 case TRANSPORT_ROAD: cost.AddCost(bridge_len * _price[PR_BUILD_ROAD] * 2 * CountBits(roadtypes)); break;
00511 case TRANSPORT_RAIL: cost.AddCost(bridge_len * RailBuildCost(railtype)); break;
00512 default: break;
00513 }
00514
00515 if (c != NULL) bridge_len = CalcBridgeLenCostFactor(bridge_len);
00516
00517 if (transport_type != TRANSPORT_WATER) {
00518 cost.AddCost((int64)bridge_len * _price[PR_BUILD_BRIDGE] * GetBridgeSpec(bridge_type)->price >> 8);
00519 } else {
00520
00521 cost.AddCost((int64)bridge_len * _price[PR_BUILD_AQUEDUCT]);
00522 }
00523
00524 }
00525
00526 return cost;
00527 }
00528
00529
00540 CommandCost CmdBuildTunnel(TileIndex start_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00541 {
00542 CompanyID company = _current_company;
00543
00544 TransportType transport_type = Extract<TransportType, 8, 2>(p1);
00545
00546 RailType railtype = INVALID_RAILTYPE;
00547 RoadTypes rts = ROADTYPES_NONE;
00548 _build_tunnel_endtile = 0;
00549 switch (transport_type) {
00550 case TRANSPORT_RAIL:
00551 railtype = Extract<RailType, 0, 4>(p1);
00552 if (!ValParamRailtype(railtype)) return CMD_ERROR;
00553 break;
00554
00555 case TRANSPORT_ROAD:
00556 rts = Extract<RoadTypes, 0, 2>(p1);
00557 if (!HasExactlyOneBit(rts) || !HasRoadTypesAvail(company, rts)) return CMD_ERROR;
00558 break;
00559
00560 default: return CMD_ERROR;
00561 }
00562
00563 if (company == OWNER_DEITY) {
00564 if (transport_type != TRANSPORT_ROAD) return CMD_ERROR;
00565 const Town *town = CalcClosestTownFromTile(start_tile);
00566
00567 company = OWNER_TOWN;
00568
00569
00570 if (town == NULL || DistanceSquare(start_tile, town->xy) > town->cache.squared_town_zone_radius[HZB_TOWN_EDGE]) {
00571 company = OWNER_NONE;
00572 }
00573 }
00574
00575 int start_z;
00576 int end_z;
00577 Slope start_tileh = GetTileSlope(start_tile, &start_z);
00578 DiagDirection direction = GetInclinedSlopeDirection(start_tileh);
00579 if (direction == INVALID_DIAGDIR) return_cmd_error(STR_ERROR_SITE_UNSUITABLE_FOR_TUNNEL);
00580
00581 if (HasTileWaterGround(start_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
00582
00583 CommandCost ret = DoCommand(start_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00584 if (ret.Failed()) return ret;
00585
00586
00587
00588
00589
00590
00591 TileIndexDiff delta = TileOffsByDiagDir(direction);
00592 DiagDirection tunnel_in_way_dir;
00593 if (DiagDirToAxis(direction) == AXIS_Y) {
00594 tunnel_in_way_dir = (TileX(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SW : DIAGDIR_NE;
00595 } else {
00596 tunnel_in_way_dir = (TileY(start_tile) < (MapMaxX() / 2)) ? DIAGDIR_SE : DIAGDIR_NW;
00597 }
00598
00599 TileIndex end_tile = start_tile;
00600
00601
00602 int tiles_coef = 3;
00603
00604 int tiles = 0;
00605
00606 int tiles_bump = 25;
00607
00608 CommandCost cost(EXPENSES_CONSTRUCTION);
00609 Slope end_tileh;
00610 for (;;) {
00611 end_tile += delta;
00612 if (!IsValidTile(end_tile)) return_cmd_error(STR_ERROR_TUNNEL_THROUGH_MAP_BORDER);
00613 end_tileh = GetTileSlope(end_tile, &end_z);
00614
00615 if (start_z == end_z) break;
00616
00617 if (!_cheats.crossing_tunnels.value && IsTunnelInWayDir(end_tile, start_z, tunnel_in_way_dir)) {
00618 return_cmd_error(STR_ERROR_ANOTHER_TUNNEL_IN_THE_WAY);
00619 }
00620
00621 tiles++;
00622 if (tiles == tiles_bump) {
00623 tiles_coef++;
00624 tiles_bump *= 2;
00625 }
00626
00627 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00628 cost.AddCost(cost.GetCost() >> tiles_coef);
00629 }
00630
00631
00632 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00633 cost.AddCost(ret);
00634
00635
00636 _build_tunnel_endtile = end_tile;
00637
00638 if (tiles > _settings_game.construction.max_tunnel_length) return_cmd_error(STR_ERROR_TUNNEL_TOO_LONG);
00639
00640 if (HasTileWaterGround(end_tile)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER);
00641
00642
00643 ret = DoCommand(end_tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00644 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
00645 cost.AddCost(ret);
00646
00647
00648 if (end_tileh != ComplementSlope(start_tileh)) {
00649
00650
00651 ClearedObjectArea *coa = FindClearedObject(end_tile);
00652 if (coa == NULL) {
00653 coa = _cleared_object_areas.Append();
00654 coa->first_tile = end_tile;
00655 coa->area = TileArea(end_tile, 1, 1);
00656 }
00657
00658
00659 TileIndex old_first_tile = coa->first_tile;
00660 coa->first_tile = INVALID_TILE;
00661 ret = DoCommand(end_tile, end_tileh & start_tileh, 0, flags, CMD_TERRAFORM_LAND);
00662 coa->first_tile = old_first_tile;
00663 if (ret.Failed()) return_cmd_error(STR_ERROR_UNABLE_TO_EXCAVATE_LAND);
00664 cost.AddCost(ret);
00665 }
00666 cost.AddCost(_price[PR_BUILD_TUNNEL]);
00667
00668
00669 switch (transport_type) {
00670 case TRANSPORT_ROAD: cost.AddCost((tiles + 2) * _price[PR_BUILD_ROAD] * 2); break;
00671 case TRANSPORT_RAIL: cost.AddCost((tiles + 2) * RailBuildCost(railtype)); break;
00672 default: break;
00673 }
00674
00675 if (flags & DC_EXEC) {
00676 Company *c = Company::GetIfValid(company);
00677 uint num_pieces = (tiles + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR;
00678 if (transport_type == TRANSPORT_RAIL) {
00679 if (!IsTunnelTile(start_tile) && c != NULL) c->infrastructure.rail[railtype] += num_pieces;
00680 MakeRailTunnel(start_tile, company, direction, railtype);
00681 MakeRailTunnel(end_tile, company, ReverseDiagDir(direction), railtype);
00682 AddSideToSignalBuffer(start_tile, INVALID_DIAGDIR, company);
00683 YapfNotifyTrackLayoutChange(start_tile, DiagDirToDiagTrack(direction));
00684 } else {
00685 if (c != NULL) {
00686 RoadType rt;
00687 FOR_EACH_SET_ROADTYPE(rt, rts ^ (IsTunnelTile(start_tile) ? GetRoadTypes(start_tile) : ROADTYPES_NONE)) {
00688 c->infrastructure.road[rt] += num_pieces * 2;
00689 }
00690 }
00691 MakeRoadTunnel(start_tile, company, direction, rts);
00692 MakeRoadTunnel(end_tile, company, ReverseDiagDir(direction), rts);
00693 }
00694 DirtyCompanyInfrastructureWindows(company);
00695 }
00696
00697 return cost;
00698 }
00699
00700
00706 static inline CommandCost CheckAllowRemoveTunnelBridge(TileIndex tile)
00707 {
00708
00709 if (_current_company == OWNER_WATER || _game_mode == GM_EDITOR) return CommandCost();
00710
00711 switch (GetTunnelBridgeTransportType(tile)) {
00712 case TRANSPORT_ROAD: {
00713 RoadTypes rts = GetRoadTypes(tile);
00714 Owner road_owner = _current_company;
00715 Owner tram_owner = _current_company;
00716
00717 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
00718 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
00719
00720
00721 if (road_owner == OWNER_TOWN && _current_company != OWNER_TOWN && !(_settings_game.construction.extra_dynamite || _cheats.magic_bulldozer.value)) {
00722
00723 return CheckTileOwnership(tile);
00724 }
00725 if (road_owner == OWNER_NONE || road_owner == OWNER_TOWN) road_owner = _current_company;
00726 if (tram_owner == OWNER_NONE) tram_owner = _current_company;
00727
00728 CommandCost ret = CheckOwnership(road_owner, tile);
00729 if (ret.Succeeded()) ret = CheckOwnership(tram_owner, tile);
00730 return ret;
00731 }
00732
00733 case TRANSPORT_RAIL:
00734 return CheckOwnership(GetTileOwner(tile));
00735
00736 case TRANSPORT_WATER: {
00737
00738 Owner aqueduct_owner = GetTileOwner(tile);
00739 if (aqueduct_owner == OWNER_NONE) aqueduct_owner = _current_company;
00740 return CheckOwnership(aqueduct_owner);
00741 }
00742
00743 default: NOT_REACHED();
00744 }
00745 }
00746
00753 static CommandCost DoClearTunnel(TileIndex tile, DoCommandFlag flags)
00754 {
00755 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
00756 if (ret.Failed()) return ret;
00757
00758 TileIndex endtile = GetOtherTunnelEnd(tile);
00759
00760 ret = TunnelBridgeIsFree(tile, endtile);
00761 if (ret.Failed()) return ret;
00762
00763 _build_tunnel_endtile = endtile;
00764
00765 Town *t = NULL;
00766 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00767 t = ClosestTownFromTile(tile, UINT_MAX);
00768
00769
00770
00771 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
00772 if (ret.Failed()) return ret;
00773 }
00774
00775
00776
00777 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00778 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
00779 }
00780
00781 uint len = GetTunnelBridgeLength(tile, endtile) + 2;
00782
00783 if (flags & DC_EXEC) {
00784 if (GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL) {
00785
00786 DiagDirection dir = GetTunnelBridgeDirection(tile);
00787 Track track = DiagDirToDiagTrack(dir);
00788 Owner owner = GetTileOwner(tile);
00789
00790 Train *v = NULL;
00791 if (HasTunnelBridgeReservation(tile)) {
00792 v = GetTrainForReservation(tile, track);
00793 if (v != NULL) FreeTrainTrackReservation(v);
00794 }
00795
00796 if (Company::IsValidID(owner)) {
00797 Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00798 DirtyCompanyInfrastructureWindows(owner);
00799 }
00800
00801 DoClearSquare(tile);
00802 DoClearSquare(endtile);
00803
00804
00805 AddSideToSignalBuffer(tile, ReverseDiagDir(dir), owner);
00806 AddSideToSignalBuffer(endtile, dir, owner);
00807
00808 YapfNotifyTrackLayoutChange(tile, track);
00809 YapfNotifyTrackLayoutChange(endtile, track);
00810
00811 if (v != NULL) TryPathReserve(v);
00812 } else {
00813 RoadType rt;
00814 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
00815
00816 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
00817 if (c != NULL) {
00818 c->infrastructure.road[rt] -= len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00819 DirtyCompanyInfrastructureWindows(c->index);
00820 }
00821 }
00822
00823 DoClearSquare(tile);
00824 DoClearSquare(endtile);
00825 }
00826 }
00827 return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_TUNNEL] * len);
00828 }
00829
00830
00837 static CommandCost DoClearBridge(TileIndex tile, DoCommandFlag flags)
00838 {
00839 CommandCost ret = CheckAllowRemoveTunnelBridge(tile);
00840 if (ret.Failed()) return ret;
00841
00842 TileIndex endtile = GetOtherBridgeEnd(tile);
00843
00844 ret = TunnelBridgeIsFree(tile, endtile);
00845 if (ret.Failed()) return ret;
00846
00847 DiagDirection direction = GetTunnelBridgeDirection(tile);
00848 TileIndexDiff delta = TileOffsByDiagDir(direction);
00849
00850 Town *t = NULL;
00851 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00852 t = ClosestTownFromTile(tile, UINT_MAX);
00853
00854
00855
00856 CommandCost ret = CheckforTownRating(flags, t, TUNNELBRIDGE_REMOVE);
00857 if (ret.Failed()) return ret;
00858 }
00859
00860
00861
00862 if (IsTileOwner(tile, OWNER_TOWN) && _game_mode != GM_EDITOR) {
00863 ChangeTownRating(t, RATING_TUNNEL_BRIDGE_DOWN_STEP, RATING_TUNNEL_BRIDGE_MINIMUM, flags);
00864 }
00865
00866 Money base_cost = (GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) ? _price[PR_CLEAR_BRIDGE] : _price[PR_CLEAR_AQUEDUCT];
00867 uint len = GetTunnelBridgeLength(tile, endtile) + 2;
00868
00869 if (flags & DC_EXEC) {
00870
00871 bool rail = GetTunnelBridgeTransportType(tile) == TRANSPORT_RAIL;
00872 Owner owner = GetTileOwner(tile);
00873 int height = GetBridgeHeight(tile);
00874 Train *v = NULL;
00875
00876 if (rail && HasTunnelBridgeReservation(tile)) {
00877 v = GetTrainForReservation(tile, DiagDirToDiagTrack(direction));
00878 if (v != NULL) FreeTrainTrackReservation(v);
00879 }
00880
00881
00882 if (rail) {
00883 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00884 } else if (GetTunnelBridgeTransportType(tile) == TRANSPORT_ROAD) {
00885 RoadType rt;
00886 FOR_EACH_SET_ROADTYPE(rt, GetRoadTypes(tile)) {
00887 Company *c = Company::GetIfValid(GetRoadOwner(tile, rt));
00888 if (c != NULL) {
00889
00890 c->infrastructure.road[rt] -= len * 2 * TUNNELBRIDGE_TRACKBIT_FACTOR;
00891 DirtyCompanyInfrastructureWindows(c->index);
00892 }
00893 }
00894 } else {
00895 if (Company::IsValidID(owner)) Company::Get(owner)->infrastructure.water -= len * TUNNELBRIDGE_TRACKBIT_FACTOR;
00896 }
00897 DirtyCompanyInfrastructureWindows(owner);
00898
00899 DoClearSquare(tile);
00900 DoClearSquare(endtile);
00901 for (TileIndex c = tile + delta; c != endtile; c += delta) {
00902
00903 if (IsNormalRoadTile(c) && GetRoadside(c) == ROADSIDE_TREES) {
00904 int minz = GetTileMaxZ(c) + 3;
00905 if (height < minz) SetRoadside(c, ROADSIDE_PAVED);
00906 }
00907 ClearBridgeMiddle(c);
00908 MarkTileDirtyByTile(c);
00909 }
00910
00911 if (rail) {
00912
00913 AddSideToSignalBuffer(tile, ReverseDiagDir(direction), owner);
00914 AddSideToSignalBuffer(endtile, direction, owner);
00915
00916 Track track = DiagDirToDiagTrack(direction);
00917 YapfNotifyTrackLayoutChange(tile, track);
00918 YapfNotifyTrackLayoutChange(endtile, track);
00919
00920 if (v != NULL) TryPathReserve(v, true);
00921 }
00922 }
00923
00924 return CommandCost(EXPENSES_CONSTRUCTION, len * base_cost);
00925 }
00926
00933 static CommandCost ClearTile_TunnelBridge(TileIndex tile, DoCommandFlag flags)
00934 {
00935 if (IsTunnel(tile)) {
00936 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_TUNNEL_FIRST);
00937 return DoClearTunnel(tile, flags);
00938 } else {
00939 if (flags & DC_AUTO) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
00940 return DoClearBridge(tile, flags);
00941 }
00942 }
00943
00954 static inline void DrawPillar(const PalSpriteID *psid, int x, int y, int z, int w, int h, const SubSprite *subsprite)
00955 {
00956 static const int PILLAR_Z_OFFSET = TILE_HEIGHT - BRIDGE_Z_START;
00957 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);
00958 }
00959
00971 static int DrawPillarColumn(int z_bottom, int z_top, const PalSpriteID *psid, int x, int y, int w, int h)
00972 {
00973 int cur_z;
00974 for (cur_z = z_top; cur_z >= z_bottom; cur_z -= TILE_HEIGHT) {
00975 DrawPillar(psid, x, y, cur_z, w, h, NULL);
00976 }
00977 return cur_z;
00978 }
00979
00991 static void DrawBridgePillars(const PalSpriteID *psid, const TileInfo *ti, Axis axis, bool drawfarpillar, int x, int y, int z_bridge)
00992 {
00993 static const int bounding_box_size[2] = {16, 2};
00994 static const int back_pillar_offset[2] = { 0, 9};
00995
00996 static const int INF = 1000;
00997 static const SubSprite half_pillar_sub_sprite[2][2] = {
00998 { { -14, -INF, INF, INF }, { -INF, -INF, -15, INF } },
00999 { { -INF, -INF, 15, INF }, { 16, -INF, INF, INF } },
01000 };
01001
01002 if (psid->sprite == 0) return;
01003
01004
01005 DiagDirection south_dir = AxisToDiagDir(axis);
01006 int z_front_north = ti->z;
01007 int z_back_north = ti->z;
01008 int z_front_south = ti->z;
01009 int z_back_south = ti->z;
01010 GetSlopePixelZOnEdge(ti->tileh, south_dir, &z_front_south, &z_back_south);
01011 GetSlopePixelZOnEdge(ti->tileh, ReverseDiagDir(south_dir), &z_front_north, &z_back_north);
01012
01013
01014 int z_front = max(z_front_north, z_front_south);
01015 int z_back = max(z_back_north, z_back_south);
01016
01017
01018 int w = bounding_box_size[axis];
01019 int h = bounding_box_size[OtherAxis(axis)];
01020
01021 int x_back = x - back_pillar_offset[axis];
01022 int y_back = y - back_pillar_offset[OtherAxis(axis)];
01023
01024
01025 int bottom_z = DrawPillarColumn(z_front, z_bridge, psid, x, y, w, h);
01026 if (z_front_north < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
01027 if (z_front_south < z_front) DrawPillar(psid, x, y, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
01028
01029
01030 int z_bridge_back = z_bridge - 2 * (int)TILE_HEIGHT;
01031 if (drawfarpillar && (z_back_north <= z_bridge_back || z_back_south <= z_bridge_back)) {
01032 bottom_z = DrawPillarColumn(z_back, z_bridge_back, psid, x_back, y_back, w, h);
01033 if (z_back_north < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][0]);
01034 if (z_back_south < z_back) DrawPillar(psid, x_back, y_back, bottom_z, w, h, &half_pillar_sub_sprite[axis][1]);
01035 }
01036 }
01037
01047 static void DrawBridgeTramBits(int x, int y, int z, int offset, bool overlay, bool head)
01048 {
01049 static const SpriteID tram_offsets[2][6] = { { 107, 108, 109, 110, 111, 112 }, { 4, 5, 15, 16, 17, 18 } };
01050 static const SpriteID back_offsets[6] = { 95, 96, 99, 102, 100, 101 };
01051 static const SpriteID front_offsets[6] = { 97, 98, 103, 106, 104, 105 };
01052
01053 static const uint size_x[6] = { 1, 16, 16, 1, 16, 1 };
01054 static const uint size_y[6] = { 16, 1, 1, 16, 1, 16 };
01055 static const uint front_bb_offset_x[6] = { 15, 0, 0, 15, 0, 15 };
01056 static const uint front_bb_offset_y[6] = { 0, 15, 15, 0, 15, 0 };
01057
01058
01059
01060 if (head || !IsInvisibilitySet(TO_BRIDGES)) {
01061 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + tram_offsets[overlay][offset], PAL_NONE,
01062 x, y, size_x[offset], size_y[offset], 0x28, z,
01063 !head && IsTransparencySet(TO_BRIDGES));
01064 }
01065
01066
01067 if (!IsInvisibilitySet(TO_CATENARY)) {
01068 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + back_offsets[offset], PAL_NONE,
01069 x, y, size_x[offset], size_y[offset], 0x28, z,
01070 IsTransparencySet(TO_CATENARY));
01071 }
01072
01073
01074 EndSpriteCombine();
01075 StartSpriteCombine();
01076
01077
01078 if (!IsInvisibilitySet(TO_CATENARY)) {
01079 AddSortableSpriteToDraw(SPR_TRAMWAY_BASE + front_offsets[offset], PAL_NONE,
01080 x, y, size_x[offset] + front_bb_offset_x[offset], size_y[offset] + front_bb_offset_y[offset], 0x28, z,
01081 IsTransparencySet(TO_CATENARY), front_bb_offset_x[offset], front_bb_offset_y[offset]);
01082 }
01083 }
01084
01098 static void DrawTile_TunnelBridge(TileInfo *ti)
01099 {
01100 TransportType transport_type = GetTunnelBridgeTransportType(ti->tile);
01101 DiagDirection tunnelbridge_direction = GetTunnelBridgeDirection(ti->tile);
01102
01103 if (IsTunnel(ti->tile)) {
01104
01105
01106
01107
01108
01109
01110
01111
01112
01113 static const int _tunnel_BB[4][12] = {
01114
01115
01116 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 },
01117 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 },
01118 { 1, 0, -15, -14, 0, 15, 16, 1, 0, 1, 16, 15 },
01119 { 0, 1, -14, -15, 15, 0, 1, 16, 1, 0, 15, 16 },
01120 };
01121 const int *BB_data = _tunnel_BB[tunnelbridge_direction];
01122
01123 bool catenary = false;
01124
01125 SpriteID image;
01126 SpriteID railtype_overlay = 0;
01127 if (transport_type == TRANSPORT_RAIL) {
01128 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01129 image = rti->base_sprites.tunnel;
01130 if (rti->UsesOverlay()) {
01131
01132 railtype_overlay = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL_PORTAL);
01133 if (railtype_overlay != 0) image = SPR_RAILTYPE_TUNNEL_BASE;
01134 }
01135 } else {
01136 image = SPR_TUNNEL_ENTRY_REAR_ROAD;
01137 }
01138
01139 if (HasTunnelBridgeSnowOrDesert(ti->tile)) image += railtype_overlay != 0 ? 8 : 32;
01140
01141 image += tunnelbridge_direction * 2;
01142 DrawGroundSprite(image, PAL_NONE);
01143
01144 if (transport_type == TRANSPORT_ROAD) {
01145 RoadTypes rts = GetRoadTypes(ti->tile);
01146
01147 if (HasBit(rts, ROADTYPE_TRAM)) {
01148 static const SpriteID tunnel_sprites[2][4] = { { 28, 78, 79, 27 }, { 5, 76, 77, 4 } };
01149
01150 DrawGroundSprite(SPR_TRAMWAY_BASE + tunnel_sprites[rts - ROADTYPES_TRAM][tunnelbridge_direction], PAL_NONE);
01151
01152
01153 if (!IsInvisibilitySet(TO_CATENARY)) {
01154 catenary = true;
01155 StartSpriteCombine();
01156 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);
01157 }
01158 }
01159 } else {
01160 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01161 if (rti->UsesOverlay()) {
01162 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_TUNNEL);
01163 if (surface != 0) DrawGroundSprite(surface + tunnelbridge_direction, PAL_NONE);
01164 }
01165
01166
01167 if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
01168 DrawGroundSprite(DiagDirToAxis(tunnelbridge_direction) == AXIS_X ? rti->base_sprites.single_x : rti->base_sprites.single_y, PALETTE_CRASH);
01169 }
01170
01171 if (HasCatenaryDrawn(GetRailType(ti->tile))) {
01172
01173 DrawCatenary(ti);
01174
01175 catenary = true;
01176 StartSpriteCombine();
01177
01178 DrawCatenaryOnTunnel(ti);
01179 }
01180 }
01181
01182 if (railtype_overlay != 0 && !catenary) StartSpriteCombine();
01183
01184 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);
01185
01186 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);
01187
01188 if (catenary || railtype_overlay != 0) EndSpriteCombine();
01189
01190
01191 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, ti->x, ti->y, BB_data[6], BB_data[7], TILE_HEIGHT, ti->z);
01192 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);
01193
01194 DrawBridgeMiddle(ti);
01195 } else {
01196 const PalSpriteID *psid;
01197 int base_offset;
01198 bool ice = HasTunnelBridgeSnowOrDesert(ti->tile);
01199
01200 if (transport_type == TRANSPORT_RAIL) {
01201 base_offset = GetRailTypeInfo(GetRailType(ti->tile))->bridge_offset;
01202 assert(base_offset != 8);
01203 } else {
01204 base_offset = 8;
01205 }
01206
01207
01208 assert( (base_offset & 0x07) == 0x00);
01209
01210 DrawFoundation(ti, GetBridgeFoundation(ti->tileh, DiagDirToAxis(tunnelbridge_direction)));
01211
01212
01213 base_offset += (6 - tunnelbridge_direction) % 4;
01214
01215 if (ti->tileh == SLOPE_FLAT) base_offset += 4;
01216
01217
01218 if (transport_type != TRANSPORT_WATER) {
01219 psid = &GetBridgeSpriteTable(GetBridgeType(ti->tile), BRIDGE_PIECE_HEAD)[base_offset];
01220 } else {
01221 psid = _aqueduct_sprites + base_offset;
01222 }
01223
01224 if (!ice) {
01225 TileIndex next = ti->tile + TileOffsByDiagDir(tunnelbridge_direction);
01226 if (ti->tileh != SLOPE_FLAT && ti->z == 0 && HasTileWaterClass(next) && GetWaterClass(next) == WATER_CLASS_SEA) {
01227 DrawShoreTile(ti->tileh);
01228 } else {
01229 DrawClearLandTile(ti, 3);
01230 }
01231 } else {
01232 DrawGroundSprite(SPR_FLAT_SNOW_DESERT_TILE + SlopeToSpriteOffset(ti->tileh), PAL_NONE);
01233 }
01234
01235
01236
01237
01238 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
01239
01240
01241
01242
01243
01244 AddSortableSpriteToDraw(psid->sprite, psid->pal, ti->x, ti->y, 16, 16, ti->tileh == SLOPE_FLAT ? 0 : 8, ti->z);
01245
01246 if (transport_type == TRANSPORT_ROAD) {
01247 RoadTypes rts = GetRoadTypes(ti->tile);
01248
01249 if (HasBit(rts, ROADTYPE_TRAM)) {
01250 uint offset = tunnelbridge_direction;
01251 int z = ti->z;
01252 if (ti->tileh != SLOPE_FLAT) {
01253 offset = (offset + 1) & 1;
01254 z += TILE_HEIGHT;
01255 } else {
01256 offset += 2;
01257 }
01258
01259 DrawBridgeTramBits(ti->x, ti->y, z, offset, HasBit(rts, ROADTYPE_ROAD), true);
01260 }
01261 EndSpriteCombine();
01262 } else if (transport_type == TRANSPORT_RAIL) {
01263 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile));
01264 if (rti->UsesOverlay()) {
01265 SpriteID surface = GetCustomRailSprite(rti, ti->tile, RTSG_BRIDGE);
01266 if (surface != 0) {
01267 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
01268 AddSortableSpriteToDraw(surface + ((DiagDirToAxis(tunnelbridge_direction) == AXIS_X) ? RTBO_X : RTBO_Y), PAL_NONE, ti->x, ti->y, 16, 16, 0, ti->z + 8);
01269 } else {
01270 AddSortableSpriteToDraw(surface + RTBO_SLOPE + tunnelbridge_direction, PAL_NONE, ti->x, ti->y, 16, 16, 8, ti->z);
01271 }
01272 }
01273
01274
01275
01276 }
01277
01278
01279 if (_game_mode != GM_MENU &&_settings_client.gui.show_track_reservation && HasTunnelBridgeReservation(ti->tile)) {
01280 if (HasBridgeFlatRamp(ti->tileh, DiagDirToAxis(tunnelbridge_direction))) {
01281 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);
01282 } else {
01283 AddSortableSpriteToDraw(rti->base_sprites.single_sloped + tunnelbridge_direction, PALETTE_CRASH, ti->x, ti->y, 16, 16, 8, ti->z);
01284 }
01285 }
01286
01287 EndSpriteCombine();
01288 if (HasCatenaryDrawn(GetRailType(ti->tile))) {
01289 DrawCatenary(ti);
01290 }
01291 }
01292
01293 DrawBridgeMiddle(ti);
01294 }
01295 }
01296
01297
01316 static BridgePieces CalcBridgePiece(uint north, uint south)
01317 {
01318 if (north == 1) {
01319 return BRIDGE_PIECE_NORTH;
01320 } else if (south == 1) {
01321 return BRIDGE_PIECE_SOUTH;
01322 } else if (north < south) {
01323 return north & 1 ? BRIDGE_PIECE_INNER_SOUTH : BRIDGE_PIECE_INNER_NORTH;
01324 } else if (north > south) {
01325 return south & 1 ? BRIDGE_PIECE_INNER_NORTH : BRIDGE_PIECE_INNER_SOUTH;
01326 } else {
01327 return north & 1 ? BRIDGE_PIECE_MIDDLE_EVEN : BRIDGE_PIECE_MIDDLE_ODD;
01328 }
01329 }
01330
01335 void DrawBridgeMiddle(const TileInfo *ti)
01336 {
01337
01338
01339
01340
01341
01342
01343
01344
01345
01346
01347
01348
01349
01350
01351
01352
01353 if (!IsBridgeAbove(ti->tile)) return;
01354
01355 TileIndex rampnorth = GetNorthernBridgeEnd(ti->tile);
01356 TileIndex rampsouth = GetSouthernBridgeEnd(ti->tile);
01357 TransportType transport_type = GetTunnelBridgeTransportType(rampsouth);
01358
01359 Axis axis = GetBridgeAxis(ti->tile);
01360 BridgePieces piece = CalcBridgePiece(
01361 GetTunnelBridgeLength(ti->tile, rampnorth) + 1,
01362 GetTunnelBridgeLength(ti->tile, rampsouth) + 1
01363 );
01364
01365 const PalSpriteID *psid;
01366 bool drawfarpillar;
01367 if (transport_type != TRANSPORT_WATER) {
01368 BridgeType type = GetBridgeType(rampsouth);
01369 drawfarpillar = !HasBit(GetBridgeSpec(type)->flags, 0);
01370
01371 uint base_offset;
01372 if (transport_type == TRANSPORT_RAIL) {
01373 base_offset = GetRailTypeInfo(GetRailType(rampsouth))->bridge_offset;
01374 } else {
01375 base_offset = 8;
01376 }
01377
01378 psid = base_offset + GetBridgeSpriteTable(type, piece);
01379 } else {
01380 drawfarpillar = true;
01381 psid = _aqueduct_sprites;
01382 }
01383
01384 if (axis != AXIS_X) psid += 4;
01385
01386 int x = ti->x;
01387 int y = ti->y;
01388 uint bridge_z = GetBridgePixelHeight(rampsouth);
01389 int z = bridge_z - BRIDGE_Z_START;
01390
01391
01392 AddSortableSpriteToDraw(SPR_EMPTY_BOUNDING_BOX, PAL_NONE, x, y, 16, 16, 1, bridge_z - TILE_HEIGHT + BB_Z_SEPARATOR);
01393
01394
01395 if (transport_type == TRANSPORT_ROAD || transport_type == TRANSPORT_RAIL) StartSpriteCombine();
01396
01397
01398 if (!IsInvisibilitySet(TO_BRIDGES)) {
01399 if (axis == AXIS_X) {
01400 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 1, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
01401 } else {
01402 AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 1, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 0, BRIDGE_Z_START);
01403 }
01404 }
01405
01406 psid++;
01407
01408 if (transport_type == TRANSPORT_ROAD) {
01409 RoadTypes rts = GetRoadTypes(rampsouth);
01410
01411 if (HasBit(rts, ROADTYPE_TRAM)) {
01412
01413 DrawBridgeTramBits(x, y, bridge_z, axis ^ 1, HasBit(rts, ROADTYPE_ROAD), false);
01414 } else {
01415 EndSpriteCombine();
01416 StartSpriteCombine();
01417 }
01418 } else if (transport_type == TRANSPORT_RAIL) {
01419 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(rampsouth));
01420 if (rti->UsesOverlay() && !IsInvisibilitySet(TO_BRIDGES)) {
01421 SpriteID surface = GetCustomRailSprite(rti, rampsouth, RTSG_BRIDGE, TCX_ON_BRIDGE);
01422 if (surface != 0) {
01423 AddSortableSpriteToDraw(surface + axis, PAL_NONE, x, y, 16, 16, 0, bridge_z, IsTransparencySet(TO_BRIDGES));
01424 }
01425 }
01426 EndSpriteCombine();
01427
01428 if (HasCatenaryDrawn(GetRailType(rampsouth))) {
01429 DrawCatenaryOnBridge(ti);
01430 }
01431 }
01432
01433
01434 if (!IsInvisibilitySet(TO_BRIDGES)) {
01435 if (axis == AXIS_X) {
01436 y += 12;
01437 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 16, 4, 0x28, z, IsTransparencySet(TO_BRIDGES), 0, 3, BRIDGE_Z_START);
01438 } else {
01439 x += 12;
01440 if (psid->sprite & SPRITE_MASK) AddSortableSpriteToDraw(psid->sprite, psid->pal, x, y, 4, 16, 0x28, z, IsTransparencySet(TO_BRIDGES), 3, 0, BRIDGE_Z_START);
01441 }
01442 }
01443
01444
01445 if (transport_type == TRANSPORT_ROAD) EndSpriteCombine();
01446
01447
01448 if (IsInvisibilitySet(TO_BRIDGES)) return;
01449
01450 psid++;
01451 if (ti->z + 5 == z) {
01452
01453 if (psid->sprite != 0) {
01454 SpriteID image = psid->sprite;
01455 SpriteID pal = psid->pal;
01456 if (IsTransparencySet(TO_BRIDGES)) {
01457 SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
01458 pal = PALETTE_TO_TRANSPARENT;
01459 }
01460
01461 DrawGroundSpriteAt(image, pal, x - ti->x, y - ti->y, z - ti->z);
01462 }
01463 } else {
01464
01465 DrawBridgePillars(psid, ti, axis, drawfarpillar, x, y, z);
01466 }
01467 }
01468
01469
01470 static int GetSlopePixelZ_TunnelBridge(TileIndex tile, uint x, uint y)
01471 {
01472 int z;
01473 Slope tileh = GetTilePixelSlope(tile, &z);
01474
01475 x &= 0xF;
01476 y &= 0xF;
01477
01478 if (IsTunnel(tile)) {
01479 uint pos = (DiagDirToAxis(GetTunnelBridgeDirection(tile)) == AXIS_X ? y : x);
01480
01481
01482 if (5 <= pos && pos <= 10) return z;
01483 } else {
01484 DiagDirection dir = GetTunnelBridgeDirection(tile);
01485 uint pos = (DiagDirToAxis(dir) == AXIS_X ? y : x);
01486
01487 z += ApplyPixelFoundationToSlope(GetBridgeFoundation(tileh, DiagDirToAxis(dir)), &tileh);
01488
01489
01490 if (5 <= pos && pos <= 10) {
01491 int delta;
01492
01493 if (tileh != SLOPE_FLAT) return z + TILE_HEIGHT;
01494
01495 switch (dir) {
01496 default: NOT_REACHED();
01497 case DIAGDIR_NE: delta = (TILE_SIZE - 1 - x) / 2; break;
01498 case DIAGDIR_SE: delta = y / 2; break;
01499 case DIAGDIR_SW: delta = x / 2; break;
01500 case DIAGDIR_NW: delta = (TILE_SIZE - 1 - y) / 2; break;
01501 }
01502 return z + 1 + delta;
01503 }
01504 }
01505
01506 return z + GetPartialPixelZ(x, y, tileh);
01507 }
01508
01509 static Foundation GetFoundation_TunnelBridge(TileIndex tile, Slope tileh)
01510 {
01511 return IsTunnel(tile) ? FOUNDATION_NONE : GetBridgeFoundation(tileh, DiagDirToAxis(GetTunnelBridgeDirection(tile)));
01512 }
01513
01514 static void GetTileDesc_TunnelBridge(TileIndex tile, TileDesc *td)
01515 {
01516 TransportType tt = GetTunnelBridgeTransportType(tile);
01517
01518 if (IsTunnel(tile)) {
01519 td->str = (tt == TRANSPORT_RAIL) ? STR_LAI_TUNNEL_DESCRIPTION_RAILROAD : STR_LAI_TUNNEL_DESCRIPTION_ROAD;
01520 } else {
01521 td->str = (tt == TRANSPORT_WATER) ? STR_LAI_BRIDGE_DESCRIPTION_AQUEDUCT : GetBridgeSpec(GetBridgeType(tile))->transport_name[tt];
01522 }
01523 td->owner[0] = GetTileOwner(tile);
01524
01525 Owner road_owner = INVALID_OWNER;
01526 Owner tram_owner = INVALID_OWNER;
01527 RoadTypes rts = GetRoadTypes(tile);
01528 if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01529 if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01530
01531
01532 if ((tram_owner != INVALID_OWNER && tram_owner != td->owner[0]) ||
01533 (road_owner != INVALID_OWNER && road_owner != td->owner[0])) {
01534 uint i = 1;
01535 if (road_owner != INVALID_OWNER) {
01536 td->owner_type[i] = STR_LAND_AREA_INFORMATION_ROAD_OWNER;
01537 td->owner[i] = road_owner;
01538 i++;
01539 }
01540 if (tram_owner != INVALID_OWNER) {
01541 td->owner_type[i] = STR_LAND_AREA_INFORMATION_TRAM_OWNER;
01542 td->owner[i] = tram_owner;
01543 }
01544 }
01545
01546 if (tt == TRANSPORT_RAIL) {
01547 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
01548 td->rail_speed = rti->max_speed;
01549
01550 if (!IsTunnel(tile)) {
01551 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
01552 if (td->rail_speed == 0 || spd < td->rail_speed) {
01553 td->rail_speed = spd;
01554 }
01555 }
01556 }
01557 }
01558
01559
01560 static void TileLoop_TunnelBridge(TileIndex tile)
01561 {
01562 bool snow_or_desert = HasTunnelBridgeSnowOrDesert(tile);
01563 switch (_settings_game.game_creation.landscape) {
01564 case LT_ARCTIC: {
01565
01566
01567
01568 int z = IsBridge(tile) ? GetTileMaxZ(tile) : GetTileZ(tile);
01569 if (snow_or_desert != (z > GetSnowLine())) {
01570 SetTunnelBridgeSnowOrDesert(tile, !snow_or_desert);
01571 MarkTileDirtyByTile(tile);
01572 }
01573 break;
01574 }
01575
01576 case LT_TROPIC:
01577 if (GetTropicZone(tile) == TROPICZONE_DESERT && !snow_or_desert) {
01578 SetTunnelBridgeSnowOrDesert(tile, true);
01579 MarkTileDirtyByTile(tile);
01580 }
01581 break;
01582
01583 default:
01584 break;
01585 }
01586 }
01587
01588 static TrackStatus GetTileTrackStatus_TunnelBridge(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01589 {
01590 TransportType transport_type = GetTunnelBridgeTransportType(tile);
01591 if (transport_type != mode || (transport_type == TRANSPORT_ROAD && (GetRoadTypes(tile) & sub_mode) == 0)) return 0;
01592
01593 DiagDirection dir = GetTunnelBridgeDirection(tile);
01594 if (side != INVALID_DIAGDIR && side != ReverseDiagDir(dir)) return 0;
01595 return CombineTrackStatus(TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir)), TRACKDIR_BIT_NONE);
01596 }
01597
01598 static void ChangeTileOwner_TunnelBridge(TileIndex tile, Owner old_owner, Owner new_owner)
01599 {
01600 TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
01601
01602
01603 uint num_pieces = tile < other_end ? (GetTunnelBridgeLength(tile, other_end) + 2) * TUNNELBRIDGE_TRACKBIT_FACTOR : 0;
01604
01605 for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01606
01607 if (GetRoadOwner(tile, rt) == old_owner) {
01608 if (HasBit(GetRoadTypes(tile), rt)) {
01609
01610
01611 Company::Get(old_owner)->infrastructure.road[rt] -= num_pieces * 2;
01612 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.road[rt] += num_pieces * 2;
01613 }
01614
01615 SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01616 }
01617 }
01618
01619 if (!IsTileOwner(tile, old_owner)) return;
01620
01621
01622
01623 TransportType tt = GetTunnelBridgeTransportType(tile);
01624 Company *old = Company::Get(old_owner);
01625 if (tt == TRANSPORT_RAIL) {
01626 old->infrastructure.rail[GetRailType(tile)] -= num_pieces;
01627 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.rail[GetRailType(tile)] += num_pieces;
01628 } else if (tt == TRANSPORT_WATER) {
01629 old->infrastructure.water -= num_pieces;
01630 if (new_owner != INVALID_OWNER) Company::Get(new_owner)->infrastructure.water += num_pieces;
01631 }
01632
01633 if (new_owner != INVALID_OWNER) {
01634 SetTileOwner(tile, new_owner);
01635 } else {
01636 if (tt == TRANSPORT_RAIL) {
01637
01638
01639 CommandCost ret = DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01640 assert(ret.Succeeded());
01641 } else {
01642
01643 SetTileOwner(tile, OWNER_NONE);
01644 }
01645 }
01646 }
01647
01653 static const byte TUNNEL_SOUND_FRAME = 1;
01654
01663 extern const byte _tunnel_visibility_frame[DIAGDIR_END] = {12, 8, 8, 12};
01664
01665 static VehicleEnterTileStatus VehicleEnter_TunnelBridge(Vehicle *v, TileIndex tile, int x, int y)
01666 {
01667 int z = GetSlopePixelZ(x, y) - v->z_pos;
01668
01669 if (abs(z) > 2) return VETSB_CANNOT_ENTER;
01670
01671 const DiagDirection dir = GetTunnelBridgeDirection(tile);
01672
01673 const DiagDirection vdir = DirToDiagDir(v->direction);
01674
01675 byte pos = (DiagDirToAxis(vdir) == AXIS_X ? x : y) & TILE_UNIT_MASK;
01676
01677 byte frame = (vdir == DIAGDIR_NE || vdir == DIAGDIR_NW) ? TILE_SIZE - 1 - pos : pos;
01678
01679 if (IsTunnel(tile)) {
01680 if (v->type == VEH_TRAIN) {
01681 Train *t = Train::From(v);
01682
01683 if (t->track != TRACK_BIT_WORMHOLE && dir == vdir) {
01684 if (t->IsFrontEngine() && frame == TUNNEL_SOUND_FRAME) {
01685 if (!PlayVehicleSound(t, VSE_TUNNEL) && RailVehInfo(t->engine_type)->engclass == 0) {
01686 SndPlayVehicleFx(SND_05_TRAIN_THROUGH_TUNNEL, v);
01687 }
01688 return VETSB_CONTINUE;
01689 }
01690 if (frame == _tunnel_visibility_frame[dir]) {
01691 t->tile = tile;
01692 t->track = TRACK_BIT_WORMHOLE;
01693 t->vehstatus |= VS_HIDDEN;
01694 return VETSB_ENTERED_WORMHOLE;
01695 }
01696 }
01697
01698 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
01699
01700 t->tile = tile;
01701 t->track = DiagDirToDiagTrackBits(vdir);
01702 assert(t->track);
01703 t->vehstatus &= ~VS_HIDDEN;
01704 return VETSB_ENTERED_WORMHOLE;
01705 }
01706 } else if (v->type == VEH_ROAD) {
01707 RoadVehicle *rv = RoadVehicle::From(v);
01708
01709
01710 if (rv->state != RVSB_WORMHOLE && dir == vdir) {
01711 if (frame == _tunnel_visibility_frame[dir]) {
01712
01713 assert(frame == rv->frame + 1);
01714 rv->tile = tile;
01715 rv->state = RVSB_WORMHOLE;
01716 rv->vehstatus |= VS_HIDDEN;
01717 return VETSB_ENTERED_WORMHOLE;
01718 } else {
01719 return VETSB_CONTINUE;
01720 }
01721 }
01722
01723
01724 if (dir == ReverseDiagDir(vdir) && frame == TILE_SIZE - _tunnel_visibility_frame[dir] && z == 0) {
01725 rv->tile = tile;
01726 rv->state = DiagDirToDiagTrackdir(vdir);
01727 rv->frame = frame;
01728 rv->vehstatus &= ~VS_HIDDEN;
01729 return VETSB_ENTERED_WORMHOLE;
01730 }
01731 }
01732 } else {
01733 if (v->type != VEH_SHIP) {
01734
01735 uint16 spd = GetBridgeSpec(GetBridgeType(tile))->speed;
01736
01737 if (v->type == VEH_ROAD) spd *= 2;
01738 Vehicle *first = v->First();
01739 first->cur_speed = min(first->cur_speed, spd);
01740 }
01741
01742 if (vdir == dir) {
01743
01744 if (frame != TILE_SIZE - 1) return VETSB_CONTINUE;
01745 switch (v->type) {
01746 case VEH_TRAIN: {
01747 Train *t = Train::From(v);
01748 t->track = TRACK_BIT_WORMHOLE;
01749 ClrBit(t->gv_flags, GVF_GOINGUP_BIT);
01750 ClrBit(t->gv_flags, GVF_GOINGDOWN_BIT);
01751 break;
01752 }
01753
01754 case VEH_ROAD: {
01755 RoadVehicle *rv = RoadVehicle::From(v);
01756 rv->state = RVSB_WORMHOLE;
01757
01758 ClrBit(rv->gv_flags, GVF_GOINGUP_BIT);
01759 ClrBit(rv->gv_flags, GVF_GOINGDOWN_BIT);
01760 break;
01761 }
01762
01763 case VEH_SHIP:
01764 Ship::From(v)->state = TRACK_BIT_WORMHOLE;
01765 break;
01766
01767 default: NOT_REACHED();
01768 }
01769 return VETSB_ENTERED_WORMHOLE;
01770 } else if (vdir == ReverseDiagDir(dir)) {
01771 v->tile = tile;
01772 switch (v->type) {
01773 case VEH_TRAIN: {
01774 Train *t = Train::From(v);
01775 if (t->track == TRACK_BIT_WORMHOLE) {
01776 t->track = DiagDirToDiagTrackBits(vdir);
01777 return VETSB_ENTERED_WORMHOLE;
01778 }
01779 break;
01780 }
01781
01782 case VEH_ROAD: {
01783 RoadVehicle *rv = RoadVehicle::From(v);
01784 if (rv->state == RVSB_WORMHOLE) {
01785 rv->state = DiagDirToDiagTrackdir(vdir);
01786 rv->frame = 0;
01787 return VETSB_ENTERED_WORMHOLE;
01788 }
01789 break;
01790 }
01791
01792 case VEH_SHIP: {
01793 Ship *ship = Ship::From(v);
01794 if (ship->state == TRACK_BIT_WORMHOLE) {
01795 ship->state = DiagDirToDiagTrackBits(vdir);
01796 return VETSB_ENTERED_WORMHOLE;
01797 }
01798 break;
01799 }
01800
01801 default: NOT_REACHED();
01802 }
01803 }
01804 }
01805 return VETSB_CONTINUE;
01806 }
01807
01808 static CommandCost TerraformTile_TunnelBridge(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new)
01809 {
01810 if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && IsBridge(tile) && GetTunnelBridgeTransportType(tile) != TRANSPORT_WATER) {
01811 DiagDirection direction = GetTunnelBridgeDirection(tile);
01812 Axis axis = DiagDirToAxis(direction);
01813 CommandCost res;
01814 int z_old;
01815 Slope tileh_old = GetTileSlope(tile, &z_old);
01816
01817
01818 if ((direction == DIAGDIR_NW) || (direction == DIAGDIR_NE)) {
01819 CheckBridgeSlopeSouth(axis, &tileh_old, &z_old);
01820 res = CheckBridgeSlopeSouth(axis, &tileh_new, &z_new);
01821 } else {
01822 CheckBridgeSlopeNorth(axis, &tileh_old, &z_old);
01823 res = CheckBridgeSlopeNorth(axis, &tileh_new, &z_new);
01824 }
01825
01826
01827 if (res.Succeeded() && (z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]);
01828 }
01829
01830 return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01831 }
01832
01833 extern const TileTypeProcs _tile_type_tunnelbridge_procs = {
01834 DrawTile_TunnelBridge,
01835 GetSlopePixelZ_TunnelBridge,
01836 ClearTile_TunnelBridge,
01837 NULL,
01838 GetTileDesc_TunnelBridge,
01839 GetTileTrackStatus_TunnelBridge,
01840 NULL,
01841 NULL,
01842 TileLoop_TunnelBridge,
01843 ChangeTileOwner_TunnelBridge,
01844 NULL,
01845 VehicleEnter_TunnelBridge,
01846 GetFoundation_TunnelBridge,
01847 TerraformTile_TunnelBridge,
01848 };