road_cmd.cpp

Go to the documentation of this file.
00001 /* $Id: road_cmd.cpp 16324 2009-05-16 20:29:53Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "cmd_helper.h"
00008 #include "road_internal.h"
00009 #include "landscape.h"
00010 #include "town_map.h"
00011 #include "viewport_func.h"
00012 #include "command_func.h"
00013 #include "yapf/yapf.h"
00014 #include "depot_base.h"
00015 #include "newgrf.h"
00016 #include "station_map.h"
00017 #include "variables.h"
00018 #include "autoslope.h"
00019 #include "tunnelbridge_map.h"
00020 #include "window_func.h"
00021 #include "strings_func.h"
00022 #include "vehicle_func.h"
00023 #include "sound_func.h"
00024 #include "tunnelbridge.h"
00025 #include "cheat_type.h"
00026 #include "functions.h"
00027 #include "effectvehicle_func.h"
00028 #include "elrail_func.h"
00029 #include "roadveh.h"
00030 
00031 #include "table/sprites.h"
00032 #include "table/strings.h"
00033 
00038 bool RoadVehiclesAreBuilt()
00039 {
00040   const Vehicle *v;
00041 
00042   FOR_ALL_VEHICLES(v) {
00043     if (v->type == VEH_ROAD) return true;
00044   }
00045   return false;
00046 }
00047 
00048 #define M(x) (1 << (x))
00049 /* Level crossings may only be built on these slopes */
00050 static const uint32 VALID_LEVEL_CROSSING_SLOPES = (M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT));
00051 #undef M
00052 
00053 /* Invalid RoadBits on slopes  */
00054 static const RoadBits _invalid_tileh_slopes_road[2][15] = {
00055   /* The inverse of the mixable RoadBits on a leveled slope */
00056   {
00057     ROAD_NONE,         // SLOPE_FLAT
00058     ROAD_NE | ROAD_SE, // SLOPE_W
00059     ROAD_NE | ROAD_NW, // SLOPE_S
00060 
00061     ROAD_NE,           // SLOPE_SW
00062     ROAD_NW | ROAD_SW, // SLOPE_E
00063     ROAD_NONE,         // SLOPE_EW
00064 
00065     ROAD_NW,           // SLOPE_SE
00066     ROAD_NONE,         // SLOPE_WSE
00067     ROAD_SE | ROAD_SW, // SLOPE_N
00068 
00069     ROAD_SE,           // SLOPE_NW
00070     ROAD_NONE,         // SLOPE_NS
00071     ROAD_NONE,         // SLOPE_ENW
00072 
00073     ROAD_SW,           // SLOPE_NE
00074     ROAD_NONE,         // SLOPE_SEN
00075     ROAD_NONE          // SLOPE_NWS
00076   },
00077   /* The inverse of the allowed straight roads on a slope
00078    * (with and without a foundation). */
00079   {
00080     ROAD_NONE, // SLOPE_FLAT
00081     ROAD_NONE, // SLOPE_W    Foundation
00082     ROAD_NONE, // SLOPE_S    Foundation
00083 
00084     ROAD_Y,    // SLOPE_SW
00085     ROAD_NONE, // SLOPE_E    Foundation
00086     ROAD_ALL,  // SLOPE_EW
00087 
00088     ROAD_X,    // SLOPE_SE
00089     ROAD_ALL,  // SLOPE_WSE
00090     ROAD_NONE, // SLOPE_N    Foundation
00091 
00092     ROAD_X,    // SLOPE_NW
00093     ROAD_ALL,  // SLOPE_NS
00094     ROAD_ALL,  // SLOPE_ENW
00095 
00096     ROAD_Y,    // SLOPE_NE
00097     ROAD_ALL,  // SLOPE_SEN
00098     ROAD_ALL   // SLOPE_NW
00099   }
00100 };
00101 
00102 Foundation GetRoadFoundation(Slope tileh, RoadBits bits);
00103 
00114 bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, RoadType rt, DoCommandFlag flags, bool town_check)
00115 {
00116   if (_game_mode == GM_EDITOR || remove == ROAD_NONE) return true;
00117 
00118   /* Water can always flood and towns can always remove "normal" road pieces.
00119    * Towns are not be allowed to remove non "normal" road pieces, like tram
00120    * tracks as that would result in trams that cannot turn. */
00121   if (_current_company == OWNER_WATER ||
00122       (rt == ROADTYPE_ROAD && !IsValidCompanyID(_current_company))) return true;
00123 
00124   /* Only do the special processing if the road is owned
00125    * by a town */
00126   if (owner != OWNER_TOWN) return (owner == OWNER_NONE) || CheckOwnership(owner);
00127 
00128   if (!town_check) return true;
00129 
00130   if (_cheats.magic_bulldozer.value) return true;
00131 
00132   Town *t = ClosestTownFromTile(tile, UINT_MAX);
00133   if (t == NULL) return true;
00134 
00135   /* check if you're allowed to remove the street owned by a town
00136    * removal allowance depends on difficulty setting */
00137   if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return false;
00138 
00139   /* Get a bitmask of which neighbouring roads has a tile */
00140   RoadBits n = ROAD_NONE;
00141   RoadBits present = GetAnyRoadBits(tile, rt);
00142   if (present & ROAD_NE && GetAnyRoadBits(TILE_ADDXY(tile, -1,  0), rt) & ROAD_SW) n |= ROAD_NE;
00143   if (present & ROAD_SE && GetAnyRoadBits(TILE_ADDXY(tile,  0,  1), rt) & ROAD_NW) n |= ROAD_SE;
00144   if (present & ROAD_SW && GetAnyRoadBits(TILE_ADDXY(tile,  1,  0), rt) & ROAD_NE) n |= ROAD_SW;
00145   if (present & ROAD_NW && GetAnyRoadBits(TILE_ADDXY(tile,  0, -1), rt) & ROAD_SE) n |= ROAD_NW;
00146 
00147   int rating_decrease = RATING_ROAD_DOWN_STEP_EDGE;
00148   /* If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
00149    * then allow it */
00150   if (KillFirstBit(n) != ROAD_NONE && (n & remove) != ROAD_NONE) {
00151     /* you can remove all kind of roads with extra dynamite */
00152     if (!_settings_game.construction.extra_dynamite) {
00153       SetDParam(0, t->index);
00154       _error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
00155       return false;
00156     }
00157     rating_decrease = RATING_ROAD_DOWN_STEP_INNER;
00158   }
00159   ChangeTownRating(t, rating_decrease, RATING_ROAD_MINIMUM, flags);
00160 
00161   return true;
00162 }
00163 
00164 
00172 static CommandCost RemoveRoad(TileIndex tile, DoCommandFlag flags, RoadBits pieces, RoadType rt, bool crossing_check, bool town_check = true)
00173 {
00174   RoadTypes rts = GetRoadTypes(tile);
00175   /* The tile doesn't have the given road type */
00176   if (!HasBit(rts, rt)) return CMD_ERROR;
00177 
00178   switch (GetTileType(tile)) {
00179     case MP_ROAD:
00180       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00181       break;
00182 
00183     case MP_STATION:
00184       if (!IsDriveThroughStopTile(tile)) return CMD_ERROR;
00185       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00186       break;
00187 
00188     case MP_TUNNELBRIDGE:
00189       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00190       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00191       break;
00192 
00193     default:
00194       return CMD_ERROR;
00195   }
00196 
00197   if (!CheckAllowRemoveRoad(tile, pieces, GetRoadOwner(tile, rt), rt, flags, town_check)) return CMD_ERROR;
00198 
00199   if (!IsTileType(tile, MP_ROAD)) {
00200     /* If it's the last roadtype, just clear the whole tile */
00201     if (rts == RoadTypeToRoadTypes(rt)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00202 
00203     CommandCost cost(EXPENSES_CONSTRUCTION);
00204     if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00205       TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00206       /* Pay for *every* tile of the bridge or tunnel */
00207       cost.AddCost((GetTunnelBridgeLength(other_end, tile) + 2) * _price.remove_road);
00208       if (flags & DC_EXEC) {
00209         SetRoadTypes(other_end, GetRoadTypes(other_end) & ~RoadTypeToRoadTypes(rt));
00210         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00211 
00212         /* If the owner of the bridge sells all it's road, also move the ownership
00213          * to the owner of the other roadtype. */
00214         RoadType other_rt = (rt == ROADTYPE_ROAD) ? ROADTYPE_TRAM : ROADTYPE_ROAD;
00215         Owner other_owner = GetRoadOwner(tile, other_rt);
00216         if (other_owner != GetTileOwner(tile)) {
00217           SetTileOwner(tile, other_owner);
00218           SetTileOwner(other_end, other_owner);
00219         }
00220 
00221         /* Mark tiles diry that have been repaved */
00222         MarkTileDirtyByTile(tile);
00223         MarkTileDirtyByTile(other_end);
00224         if (IsBridge(tile)) {
00225           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00226 
00227           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00228         }
00229       }
00230     } else {
00231       assert(IsDriveThroughStopTile(tile));
00232       cost.AddCost(_price.remove_road * 2);
00233       if (flags & DC_EXEC) {
00234         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00235         MarkTileDirtyByTile(tile);
00236       }
00237     }
00238     return cost;
00239   }
00240 
00241   switch (GetRoadTileType(tile)) {
00242     case ROAD_TILE_NORMAL: {
00243       const Slope tileh = GetTileSlope(tile, NULL);
00244       RoadBits present = GetRoadBits(tile, rt);
00245       const RoadBits other = GetOtherRoadBits(tile, rt);
00246       const Foundation f = GetRoadFoundation(tileh, present);
00247 
00248       if (HasRoadWorks(tile) && _current_company != OWNER_WATER) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00249 
00250       /* Autocomplete to a straight road
00251        * @li on steep slopes
00252        * @li if the bits of the other roadtypes result in another foundation
00253        * @li if build on slopes is disabled */
00254       if (IsSteepSlope(tileh) || (IsStraightRoad(other) &&
00255           (other & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) != ROAD_NONE) ||
00256           (tileh != SLOPE_FLAT && !_settings_game.construction.build_on_slopes)) {
00257         pieces |= MirrorRoadBits(pieces);
00258       }
00259 
00260       /* limit the bits to delete to the existing bits. */
00261       pieces &= present;
00262       if (pieces == ROAD_NONE) return CMD_ERROR;
00263 
00264       /* Now set present what it will be after the remove */
00265       present ^= pieces;
00266 
00267       /* Check for invalid RoadBit combinations on slopes */
00268       if (tileh != SLOPE_FLAT && present != ROAD_NONE &&
00269           (present & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) == present) {
00270         return CMD_ERROR;
00271       }
00272 
00273       if (flags & DC_EXEC) {
00274         if (HasRoadWorks(tile)) {
00275           /* flooding tile with road works, don't forget to remove the effect vehicle too */
00276           assert(_current_company == OWNER_WATER);
00277           Vehicle *v;
00278           FOR_ALL_VEHICLES(v) {
00279             if (v->type == VEH_EFFECT && TileVirtXY(v->x_pos, v->y_pos) == tile) {
00280               delete v;
00281             }
00282           }
00283         }
00284         if (present == ROAD_NONE) {
00285           RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00286           if (rts == ROADTYPES_NONE) {
00287             /* Includes MarkTileDirtyByTile() */
00288             DoClearSquare(tile);
00289           } else {
00290             if (rt == ROADTYPE_ROAD && IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN)) {
00291               /* Update nearest-town index */
00292               const Town *town = CalcClosestTownFromTile(tile);
00293               SetTownIndex(tile, town == NULL ? (TownID)INVALID_TOWN : town->index);
00294             }
00295             SetRoadBits(tile, ROAD_NONE, rt);
00296             SetRoadTypes(tile, rts);
00297             MarkTileDirtyByTile(tile);
00298           }
00299         } else {
00300           /* When bits are removed, you *always* end up with something that
00301            * is not a complete straight road tile. However, trams do not have
00302            * onewayness, so they cannot remove it either. */
00303           if (rt != ROADTYPE_TRAM) SetDisallowedRoadDirections(tile, DRD_NONE);
00304           SetRoadBits(tile, present, rt);
00305           MarkTileDirtyByTile(tile);
00306         }
00307       }
00308 
00309       /* If we change the foundation we have to pay for it. */
00310       return CommandCost(EXPENSES_CONSTRUCTION, CountBits(pieces) * _price.remove_road +
00311           ((GetRoadFoundation(tileh, present) != f) ? _price.terraform : (Money)0));
00312     }
00313 
00314     case ROAD_TILE_CROSSING: {
00315       if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
00316         return CMD_ERROR;
00317       }
00318 
00319       /* Don't allow road to be removed from the crossing when there is tram;
00320        * we can't draw the crossing without roadbits ;) */
00321       if (rt == ROADTYPE_ROAD && HasTileRoadType(tile, ROADTYPE_TRAM) && (flags & DC_EXEC || crossing_check)) return CMD_ERROR;
00322 
00323       if (flags & DC_EXEC) {
00324         Track railtrack = GetCrossingRailTrack(tile);
00325         RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00326         if (rts == ROADTYPES_NONE) {
00327           TrackBits tracks = GetCrossingRailBits(tile);
00328           bool reserved = GetCrossingReservation(tile);
00329           MakeRailNormal(tile, GetTileOwner(tile), tracks, GetRailType(tile));
00330           if (reserved) SetTrackReservation(tile, tracks);
00331         } else {
00332           SetRoadTypes(tile, rts);
00333           /* If we ever get HWAY and it is possible without road then we will need to promote ownership and invalidate town index here, too */
00334         }
00335         MarkTileDirtyByTile(tile);
00336         YapfNotifyTrackLayoutChange(tile, railtrack);
00337       }
00338       return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road * 2);
00339     }
00340 
00341     default:
00342     case ROAD_TILE_DEPOT:
00343       return CMD_ERROR;
00344   }
00345 }
00346 
00347 
00355 CommandCost CmdRemoveRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00356 {
00357   RoadType rt = (RoadType)GB(p1, 4, 2);
00358   if (!IsValidRoadType(rt)) return CMD_ERROR;
00359 
00360   RoadBits pieces = Extract<RoadBits, 0>(p1);
00361 
00362   return RemoveRoad(tile, flags, pieces, rt, true);
00363 }
00364 
00376 static CommandCost CheckRoadSlope(Slope tileh, RoadBits *pieces, RoadBits existing, RoadBits other)
00377 {
00378   /* Remove already build pieces */
00379   CLRBITS(*pieces, existing);
00380 
00381   /* If we can't build anything stop here */
00382   if (*pieces == ROAD_NONE) return CMD_ERROR;
00383 
00384   /* All RoadBit combos are valid on flat land */
00385   if (tileh == SLOPE_FLAT) return CommandCost();
00386 
00387   /* Proceed steep Slopes first to reduce lookup table size */
00388   if (IsSteepSlope(tileh)) {
00389     /* Force straight roads. */
00390     *pieces |= MirrorRoadBits(*pieces);
00391 
00392     /* Use existing as all existing since only straight
00393      * roads are allowed here. */
00394     existing |= other;
00395 
00396     if ((existing == ROAD_NONE || existing == *pieces) && IsStraightRoad(*pieces)) {
00397       return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00398     }
00399     return CMD_ERROR;
00400   }
00401 
00402   /* Save the merge of all bits of the current type */
00403   RoadBits type_bits = existing | *pieces;
00404 
00405   /* Roads on slopes */
00406   if (_settings_game.construction.build_on_slopes && (_invalid_tileh_slopes_road[0][tileh] & (other | type_bits)) == ROAD_NONE) {
00407 
00408     /* If we add leveling we've got to pay for it */
00409     if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00410 
00411     return CommandCost();
00412   }
00413 
00414   /* Autocomplete uphill roads */
00415   *pieces |= MirrorRoadBits(*pieces);
00416   type_bits = existing | *pieces;
00417 
00418   /* Uphill roads */
00419   if (IsStraightRoad(type_bits) && (other == type_bits || other == ROAD_NONE) &&
00420       (_invalid_tileh_slopes_road[1][tileh] & (other | type_bits)) == ROAD_NONE) {
00421 
00422     /* Slopes with foundation ? */
00423     if (IsSlopeWithOneCornerRaised(tileh)) {
00424 
00425       /* Prevent build on slopes if it isn't allowed */
00426       if (_settings_game.construction.build_on_slopes) {
00427 
00428         /* If we add foundation we've got to pay for it */
00429         if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00430 
00431         return CommandCost();
00432       }
00433     } else {
00434       if (CountBits(existing) == 1) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00435       return CommandCost();
00436     }
00437   }
00438   return CMD_ERROR;
00439 }
00440 
00449 CommandCost CmdBuildRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00450 {
00451   CommandCost cost(EXPENSES_CONSTRUCTION);
00452 
00453   RoadBits existing = ROAD_NONE;
00454   RoadBits other_bits = ROAD_NONE;
00455 
00456   /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
00457    * if a non-company is building the road */
00458   if ((IsValidCompanyID(_current_company) && p2 != 0) || (_current_company == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR;
00459   if (_current_company != OWNER_TOWN) {
00460     const Town *town = CalcClosestTownFromTile(tile);
00461     p2 = (town != NULL) ? town->index : (TownID)INVALID_TOWN;
00462   }
00463 
00464   RoadBits pieces = Extract<RoadBits, 0>(p1);
00465 
00466   /* do not allow building 'zero' road bits, code wouldn't handle it */
00467   if (pieces == ROAD_NONE) return CMD_ERROR;
00468 
00469   RoadType rt = (RoadType)GB(p1, 4, 2);
00470   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00471 
00472   DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2);
00473 
00474   Slope tileh = GetTileSlope(tile, NULL);
00475 
00476   switch (GetTileType(tile)) {
00477     case MP_ROAD:
00478       switch (GetRoadTileType(tile)) {
00479         case ROAD_TILE_NORMAL: {
00480           if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00481 
00482           other_bits = GetOtherRoadBits(tile, rt);
00483           if (!HasTileRoadType(tile, rt)) break;
00484 
00485           existing = GetRoadBits(tile, rt);
00486           bool crossing = !IsStraightRoad(existing | pieces);
00487           if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) {
00488             /* Junctions cannot be one-way */
00489             return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00490           }
00491           if ((existing & pieces) == pieces) {
00492             /* We only want to set the (dis)allowed road directions */
00493             if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && IsRoadOwner(tile, ROADTYPE_ROAD, _current_company)) {
00494               if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00495 
00496               if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00497 
00498               /* Ignore half built tiles */
00499               if (flags & DC_EXEC && rt != ROADTYPE_TRAM && IsStraightRoad(existing)) {
00500                 SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd);
00501                 MarkTileDirtyByTile(tile);
00502               }
00503               return CommandCost();
00504             }
00505             return_cmd_error(STR_1007_ALREADY_BUILT);
00506           }
00507         } break;
00508 
00509         case ROAD_TILE_CROSSING:
00510           other_bits = GetCrossingRoadBits(tile);
00511           if (pieces & ComplementRoadBits(other_bits)) goto do_clear;
00512           pieces = other_bits; // we need to pay for both roadbits
00513 
00514           if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00515           break;
00516 
00517         default:
00518         case ROAD_TILE_DEPOT:
00519           goto do_clear;
00520       }
00521       break;
00522 
00523     case MP_RAILWAY: {
00524       if (IsSteepSlope(tileh)) {
00525         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00526       }
00527 
00528       /* Level crossings may only be built on these slopes */
00529       if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) {
00530         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00531       }
00532 
00533       if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
00534 
00535       Axis roaddir;
00536       switch (GetTrackBits(tile)) {
00537         case TRACK_BIT_X:
00538           if (pieces & ROAD_X) goto do_clear;
00539           roaddir = AXIS_Y;
00540           break;
00541 
00542         case TRACK_BIT_Y:
00543           if (pieces & ROAD_Y) goto do_clear;
00544           roaddir = AXIS_X;
00545           break;
00546 
00547         default: goto do_clear;
00548       }
00549 
00550       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00551 
00552       if (flags & DC_EXEC) {
00553         Track railtrack = AxisToTrack(OtherAxis(roaddir));
00554         YapfNotifyTrackLayoutChange(tile, railtrack);
00555         /* Always add road to the roadtypes (can't draw without it) */
00556         bool reserved = HasBit(GetTrackReservation(tile), railtrack);
00557         MakeRoadCrossing(tile, _current_company, _current_company, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2);
00558         SetCrossingReservation(tile, reserved);
00559         UpdateLevelCrossing(tile, false);
00560         MarkTileDirtyByTile(tile);
00561       }
00562       return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));
00563     }
00564 
00565     case MP_STATION: {
00566       if (!IsDriveThroughStopTile(tile)) goto do_clear;
00567 
00568       RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));
00569       if (pieces & ~curbits) goto do_clear;
00570       pieces = curbits; // we need to pay for both roadbits
00571 
00572       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00573     } break;
00574 
00575     case MP_TUNNELBRIDGE:
00576       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00577       if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;
00578       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00579       /* Don't allow adding roadtype to the bridge/tunnel when vehicles are already driving on it */
00580       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00581       break;
00582 
00583     default: {
00584 do_clear:;
00585       CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00586       if (CmdFailed(ret)) return ret;
00587       cost.AddCost(ret);
00588     } break;
00589   }
00590 
00591   if (other_bits != pieces) {
00592     /* Check the foundation/slopes when adding road/tram bits */
00593     CommandCost ret = CheckRoadSlope(tileh, &pieces, existing, other_bits);
00594     /* Return an error if we need to build a foundation (ret != 0) but the
00595      * current setting is turned off */
00596     if (CmdFailed(ret) || (ret.GetCost() != 0 && !_settings_game.construction.build_on_slopes)) {
00597       return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00598     }
00599     cost.AddCost(ret);
00600   }
00601 
00602   if (IsTileType(tile, MP_ROAD)) {
00603     /* Don't put the pieces that already exist */
00604     pieces &= ComplementRoadBits(existing);
00605 
00606     /* Check if new road bits will have the same foundation as other existing road types */
00607     if (IsNormalRoad(tile)) {
00608       Slope slope = GetTileSlope(tile, NULL);
00609       Foundation found_new = GetRoadFoundation(slope, pieces | existing);
00610 
00611       /* Test if all other roadtypes can be built at that foundation */
00612       for (RoadType rtest = ROADTYPE_ROAD; rtest < ROADTYPE_END; rtest++) {
00613         if (rtest != rt) { // check only other road types
00614           RoadBits bits = GetRoadBits(tile, rtest);
00615           /* do not check if there are not road bits of given type */
00616           if (bits != ROAD_NONE && GetRoadFoundation(slope, bits) != found_new) {
00617             return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00618           }
00619         }
00620       }
00621     }
00622   }
00623 
00624   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00625 
00626   cost.AddCost(CountBits(pieces) * _price.build_road);
00627   if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00628     /* Pay for *every* tile of the bridge or tunnel */
00629     cost.MultiplyCost(GetTunnelBridgeLength(GetOtherTunnelBridgeEnd(tile), tile) + 2);
00630   }
00631 
00632   if (flags & DC_EXEC) {
00633     switch (GetTileType(tile)) {
00634       case MP_ROAD: {
00635         RoadTileType rtt = GetRoadTileType(tile);
00636         if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) {
00637           SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00638           SetRoadOwner(tile, rt, _current_company);
00639           if (rt == ROADTYPE_ROAD) SetTownIndex(tile, p2);
00640         }
00641         if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt);
00642       } break;
00643 
00644       case MP_TUNNELBRIDGE: {
00645         TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00646 
00647         SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt));
00648         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00649         SetRoadOwner(other_end, rt, _current_company);
00650         SetRoadOwner(tile, rt, _current_company);
00651 
00652         /* Mark tiles diry that have been repaved */
00653         MarkTileDirtyByTile(other_end);
00654         MarkTileDirtyByTile(tile);
00655         if (IsBridge(tile)) {
00656           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00657 
00658           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00659         }
00660       } break;
00661 
00662       case MP_STATION:
00663         assert(IsDriveThroughStopTile(tile));
00664         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00665         SetRoadOwner(tile, rt, _current_company);
00666         break;
00667 
00668       default:
00669         MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_company, _current_company);
00670         break;
00671     }
00672 
00673     if (rt != ROADTYPE_TRAM && IsNormalRoadTile(tile)) {
00674       existing |= pieces;
00675       SetDisallowedRoadDirections(tile, IsStraightRoad(existing) ?
00676           GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE);
00677     }
00678 
00679     MarkTileDirtyByTile(tile);
00680   }
00681   return cost;
00682 }
00683 
00695 CommandCost CmdBuildLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00696 {
00697   CommandCost cost(EXPENSES_CONSTRUCTION);
00698   bool had_bridge = false;
00699   bool had_tunnel = false;
00700   bool had_success = false;
00701   DisallowedRoadDirections drd = DRD_NORTHBOUND;
00702 
00703   _error_message = INVALID_STRING_ID;
00704 
00705   if (p1 >= MapSize()) return CMD_ERROR;
00706 
00707   TileIndex start_tile = p1;
00708   RoadType rt = (RoadType)GB(p2, 3, 2);
00709   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00710 
00711   /* Only drag in X or Y direction dictated by the direction variable */
00712   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00713   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00714 
00715   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00716   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00717     TileIndex t = start_tile;
00718     start_tile = end_tile;
00719     end_tile = t;
00720     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00721     drd = DRD_SOUTHBOUND;
00722   }
00723 
00724   /* On the X-axis, we have to swap the initial bits, so they
00725    * will be interpreted correctly in the GTTS. Futhermore
00726    * when you just 'click' on one tile to build them. */
00727   if (HasBit(p2, 2) == (start_tile == end_tile && HasBit(p2, 0) == HasBit(p2, 1))) drd ^= DRD_BOTH;
00728   /* No disallowed direction bits have to be toggled */
00729   if (!HasBit(p2, 5)) drd = DRD_NONE;
00730 
00731   TileIndex tile = start_tile;
00732   /* Start tile is the small number. */
00733   for (;;) {
00734     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00735 
00736     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00737     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00738 
00739     _error_message = INVALID_STRING_ID;
00740     CommandCost ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD);
00741     if (CmdFailed(ret)) {
00742       if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
00743     } else {
00744       had_success = true;
00745       /* Only pay for the upgrade on one side of the bridges and tunnels */
00746       if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00747         if (IsBridge(tile)) {
00748           if ((!had_bridge || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00749             cost.AddCost(ret);
00750           }
00751           had_bridge = true;
00752         } else { // IsTunnel(tile)
00753           if ((!had_tunnel || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00754             cost.AddCost(ret);
00755           }
00756           had_tunnel = true;
00757         }
00758       } else {
00759         cost.AddCost(ret);
00760       }
00761     }
00762 
00763     if (tile == end_tile) break;
00764 
00765     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00766   }
00767 
00768   return !had_success ? CMD_ERROR : cost;
00769 }
00770 
00781 CommandCost CmdRemoveLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00782 {
00783   CommandCost cost(EXPENSES_CONSTRUCTION);
00784 
00785   if (p1 >= MapSize()) return CMD_ERROR;
00786 
00787   TileIndex start_tile = p1;
00788   RoadType rt = (RoadType)GB(p2, 3, 2);
00789   if (!IsValidRoadType(rt)) return CMD_ERROR;
00790 
00791   /* Only drag in X or Y direction dictated by the direction variable */
00792   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00793   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00794 
00795   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00796   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00797     TileIndex t = start_tile;
00798     start_tile = end_tile;
00799     end_tile = t;
00800     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00801   }
00802 
00803   Money money = GetAvailableMoneyForCommand();
00804   TileIndex tile = start_tile;
00805   /* Start tile is the small number. */
00806   for (;;) {
00807     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00808 
00809     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00810     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00811 
00812     /* try to remove the halves. */
00813     if (bits != 0) {
00814       CommandCost ret = RemoveRoad(tile, flags & ~DC_EXEC, bits, rt, true);
00815       if (CmdSucceeded(ret)) {
00816         if (flags & DC_EXEC) {
00817           money -= ret.GetCost();
00818           if (money < 0) {
00819             _additional_cash_required = DoCommand(end_tile, start_tile, p2, flags & ~DC_EXEC, CMD_REMOVE_LONG_ROAD).GetCost();
00820             return cost;
00821           }
00822           RemoveRoad(tile, flags, bits, rt, true, false);
00823         }
00824         cost.AddCost(ret);
00825       }
00826     }
00827 
00828     if (tile == end_tile) break;
00829 
00830     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00831   }
00832 
00833   return (cost.GetCost() == 0) ? CMD_ERROR : cost;
00834 }
00835 
00846 CommandCost CmdBuildRoadDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00847 {
00848   DiagDirection dir = Extract<DiagDirection, 0>(p1);
00849   RoadType rt = (RoadType)GB(p1, 2, 2);
00850 
00851   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00852 
00853   Slope tileh = GetTileSlope(tile, NULL);
00854   if (tileh != SLOPE_FLAT && (
00855         !_settings_game.construction.build_on_slopes ||
00856         IsSteepSlope(tileh) ||
00857         !CanBuildDepotByTileh(dir, tileh)
00858       )) {
00859     return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
00860   }
00861 
00862   CommandCost cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00863   if (CmdFailed(cost)) return CMD_ERROR;
00864 
00865   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
00866 
00867   if (!Depot::CanAllocateItem()) return CMD_ERROR;
00868 
00869   if (flags & DC_EXEC) {
00870     Depot *dep = new Depot(tile);
00871     dep->town_index = ClosestTownFromTile(tile, UINT_MAX)->index;
00872 
00873     MakeRoadDepot(tile, _current_company, dir, rt, dep->town_index);
00874     MarkTileDirtyByTile(tile);
00875   }
00876   return cost.AddCost(_price.build_road_depot);
00877 }
00878 
00879 static CommandCost RemoveRoadDepot(TileIndex tile, DoCommandFlag flags)
00880 {
00881   if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
00882 
00883   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00884 
00885   if (flags & DC_EXEC) {
00886     DoClearSquare(tile);
00887     delete GetDepotByTile(tile);
00888   }
00889 
00890   return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road_depot);
00891 }
00892 
00893 static CommandCost ClearTile_Road(TileIndex tile, DoCommandFlag flags)
00894 {
00895   switch (GetRoadTileType(tile)) {
00896     case ROAD_TILE_NORMAL: {
00897       RoadBits b = GetAllRoadBits(tile);
00898 
00899       /* Clear the road if only one piece is on the tile OR we are not using the DC_AUTO flag */
00900       if ((CountBits(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) || !(flags & DC_AUTO)) {
00901         RoadTypes rts = GetRoadTypes(tile);
00902         CommandCost ret(EXPENSES_CONSTRUCTION);
00903         for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
00904           if (HasBit(rts, rt)) {
00905             CommandCost tmp_ret = RemoveRoad(tile, flags, GetRoadBits(tile, rt), rt, true);
00906             if (CmdFailed(tmp_ret)) return tmp_ret;
00907             ret.AddCost(tmp_ret);
00908           }
00909         }
00910         return ret;
00911       }
00912       return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00913     }
00914 
00915     case ROAD_TILE_CROSSING: {
00916       RoadTypes rts = GetRoadTypes(tile);
00917       CommandCost ret(EXPENSES_CONSTRUCTION);
00918 
00919       if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00920 
00921       /* Must iterate over the roadtypes in a reverse manner because
00922        * tram tracks must be removed before the road bits. */
00923       RoadType rt = ROADTYPE_TRAM;
00924       do {
00925         if (HasBit(rts, rt)) {
00926           CommandCost tmp_ret = RemoveRoad(tile, flags, GetCrossingRoadBits(tile), rt, false);
00927           if (CmdFailed(tmp_ret)) return tmp_ret;
00928           ret.AddCost(tmp_ret);
00929         }
00930       } while (rt-- != ROADTYPE_ROAD);
00931 
00932       if (flags & DC_EXEC) {
00933         DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00934       }
00935       return ret;
00936     }
00937 
00938     default:
00939     case ROAD_TILE_DEPOT:
00940       if (flags & DC_AUTO) {
00941         return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
00942       }
00943       return RemoveRoadDepot(tile, flags);
00944   }
00945 }
00946 
00947 
00948 struct DrawRoadTileStruct {
00949   uint16 image;
00950   byte subcoord_x;
00951   byte subcoord_y;
00952 };
00953 
00954 #include "table/road_land.h"
00955 
00963 Foundation GetRoadFoundation(Slope tileh, RoadBits bits)
00964 {
00965   /* Flat land and land without a road doesn't require a foundation */
00966   if (tileh == SLOPE_FLAT || bits == ROAD_NONE) return FOUNDATION_NONE;
00967 
00968   if (!IsSteepSlope(tileh)) {
00969     /* Leveled RoadBits on a slope */
00970     if ((_invalid_tileh_slopes_road[0][tileh] & bits) == ROAD_NONE) return FOUNDATION_LEVELED;
00971 
00972     /* Straight roads without foundation on a slope */
00973     if (!IsSlopeWithOneCornerRaised(tileh) &&
00974         (_invalid_tileh_slopes_road[1][tileh] & bits) == ROAD_NONE)
00975       return FOUNDATION_NONE;
00976   }
00977 
00978   /* Roads on steep Slopes or on Slopes with one corner raised */
00979   return (bits == ROAD_X ? FOUNDATION_INCLINED_X : FOUNDATION_INCLINED_Y);
00980 }
00981 
00982 const byte _road_sloped_sprites[14] = {
00983   0,  0,  2,  0,
00984   0,  1,  0,  0,
00985   3,  0,  0,  0,
00986   0,  0
00987 };
00988 
00999 static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside)
01000 {
01001   return (IsOnSnow(tile) &&
01002       !(_settings_game.game_creation.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) &&
01003         roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS));
01004 }
01005 
01011 void DrawTramCatenary(const TileInfo *ti, RoadBits tram)
01012 {
01013   /* Do not draw catenary if it is invisible */
01014   if (IsInvisibilitySet(TO_CATENARY)) return;
01015 
01016   /* Don't draw the catenary under a low bridge */
01017   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_CATENARY)) {
01018     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01019 
01020     if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
01021   }
01022 
01023   SpriteID front;
01024   SpriteID back;
01025 
01026   if (ti->tileh != SLOPE_FLAT) {
01027     back  = SPR_TRAMWAY_BACK_WIRES_SLOPED  + _road_sloped_sprites[ti->tileh - 1];
01028     front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1];
01029   } else {
01030     back  = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram];
01031     front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram];
01032   }
01033 
01034   AddSortableSpriteToDraw(back,  PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01035   AddSortableSpriteToDraw(front, PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01036 }
01037 
01046 static void DrawRoadDetail(SpriteID img, const TileInfo *ti, int dx, int dy, int h)
01047 {
01048   int x = ti->x | dx;
01049   int y = ti->y | dy;
01050   byte z = ti->z;
01051   if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
01052   AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z);
01053 }
01054 
01059 static void DrawRoadBits(TileInfo *ti)
01060 {
01061   RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD);
01062   RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM);
01063 
01064   SpriteID image = 0;
01065   SpriteID pal = PAL_NONE;
01066 
01067   if (ti->tileh != SLOPE_FLAT) {
01068     DrawFoundation(ti, GetRoadFoundation(ti->tileh, road | tram));
01069 
01070     /* DrawFoundation() modifies ti.
01071      * Default sloped sprites.. */
01072     if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
01073   }
01074 
01075   if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram];
01076 
01077   Roadside roadside = GetRoadside(ti->tile);
01078 
01079   if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01080     image += 19;
01081   } else {
01082     switch (roadside) {
01083       case ROADSIDE_BARREN:           pal = PALETTE_TO_BARE_LAND; break;
01084       case ROADSIDE_GRASS:            break;
01085       case ROADSIDE_GRASS_ROAD_WORKS: break;
01086       default:                        image -= 19; break; // Paved
01087     }
01088   }
01089 
01090   DrawGroundSprite(image, pal);
01091 
01092   /* For tram we overlay the road graphics with either tram tracks only
01093    * (when there is actual road beneath the trams) or with tram tracks
01094    * and some dirts which hides the road graphics */
01095   if (tram != ROAD_NONE) {
01096     if (ti->tileh != SLOPE_FLAT) {
01097       image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET;
01098     } else {
01099       image = _road_tile_sprites_1[tram] - SPR_ROAD_Y;
01100     }
01101     image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY;
01102     DrawGroundSprite(image, pal);
01103   }
01104 
01105   if (road != ROAD_NONE) {
01106     DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile);
01107     if (drd != DRD_NONE) {
01108       DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0);
01109     }
01110   }
01111 
01112   if (HasRoadWorks(ti->tile)) {
01113     /* Road works */
01114     DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE);
01115     return;
01116   }
01117 
01118   if (tram != ROAD_NONE) DrawTramCatenary(ti, tram);
01119 
01120   /* Return if full detail is disabled, or we are zoomed fully out. */
01121   if (!HasBit(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
01122 
01123   /* Do not draw details (street lights, trees) under low bridge */
01124   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && (roadside == ROADSIDE_TREES || roadside == ROADSIDE_STREET_LIGHTS)) {
01125     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01126     uint minz = GetTileMaxZ(ti->tile) + 2 * TILE_HEIGHT;
01127 
01128     if (roadside == ROADSIDE_TREES) minz += TILE_HEIGHT;
01129 
01130     if (height < minz) return;
01131   }
01132 
01133   /* If there are no road bits, return, as there is nothing left to do */
01134   if (CountBits(road) < 2) return;
01135 
01136   /* Draw extra details. */
01137   for (const DrawRoadTileStruct *drts = _road_display_table[roadside][road | tram]; drts->image != 0; drts++) {
01138     DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10);
01139   }
01140 }
01141 
01143 static void DrawTile_Road(TileInfo *ti)
01144 {
01145   switch (GetRoadTileType(ti->tile)) {
01146     case ROAD_TILE_NORMAL:
01147       DrawRoadBits(ti);
01148       break;
01149 
01150     case ROAD_TILE_CROSSING: {
01151       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01152 
01153       SpriteID image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing;
01154       SpriteID pal = PAL_NONE;
01155 
01156       if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
01157       if (IsCrossingBarred(ti->tile)) image += 2;
01158 
01159       Roadside roadside = GetRoadside(ti->tile);
01160 
01161       if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01162         image += 8;
01163       } else {
01164         switch (roadside) {
01165           case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break;
01166           case ROADSIDE_GRASS:  break;
01167           default:              image += 4; break; // Paved
01168         }
01169       }
01170 
01171       DrawGroundSprite(image, pal);
01172 
01173       /* PBS debugging, draw reserved tracks darker */
01174       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && GetCrossingReservation(ti->tile)) {
01175         DrawGroundSprite(GetCrossingRoadAxis(ti->tile) == AXIS_Y ? GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_y : GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_x, PALETTE_CRASH);
01176       }
01177 
01178       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01179         DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal);
01180         DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile));
01181       }
01182       if (HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
01183       break;
01184     }
01185 
01186     default:
01187     case ROAD_TILE_DEPOT: {
01188       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01189 
01190       SpriteID palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
01191 
01192       const DrawTileSprites *dts;
01193       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01194         dts =  &_tram_depot[GetRoadDepotDirection(ti->tile)];
01195       } else {
01196         dts =  &_road_depot[GetRoadDepotDirection(ti->tile)];
01197       }
01198 
01199       DrawGroundSprite(dts->ground.sprite, PAL_NONE);
01200 
01201       /* End now if buildings are invisible */
01202       if (IsInvisibilitySet(TO_BUILDINGS)) break;
01203 
01204       for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01205         SpriteID image = dtss->image.sprite;
01206         SpriteID pal;
01207 
01208         if (!IsTransparencySet(TO_BUILDINGS) && HasBit(image, PALETTE_MODIFIER_COLOUR)) {
01209           pal = palette;
01210         } else {
01211           pal = PAL_NONE;
01212         }
01213 
01214         AddSortableSpriteToDraw(
01215           image, pal,
01216           ti->x + dtss->delta_x, ti->y + dtss->delta_y,
01217           dtss->size_x, dtss->size_y,
01218           dtss->size_z, ti->z,
01219           IsTransparencySet(TO_BUILDINGS)
01220         );
01221       }
01222       break;
01223     }
01224   }
01225   DrawBridgeMiddle(ti);
01226 }
01227 
01228 void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt)
01229 {
01230   SpriteID palette = COMPANY_SPRITE_COLOUR(_local_company);
01231   const DrawTileSprites *dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir];
01232 
01233   x += 33;
01234   y += 17;
01235 
01236   DrawSprite(dts->ground.sprite, PAL_NONE, x, y);
01237 
01238   for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01239     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
01240     SpriteID image = dtss->image.sprite;
01241 
01242     DrawSprite(image, HasBit(image, PALETTE_MODIFIER_COLOUR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
01243   }
01244 }
01245 
01250 void UpdateNearestTownForRoadTiles(bool invalidate)
01251 {
01252   assert(!invalidate || _generating_world);
01253 
01254   for (TileIndex t = 0; t < MapSize(); t++) {
01255     if (IsTileType(t, MP_ROAD) && !HasTownOwnedRoad(t)) {
01256       TownID tid = (TownID)INVALID_TOWN;
01257       if (!invalidate) {
01258         const Town *town = CalcClosestTownFromTile(t);
01259         if (town != NULL) tid = town->index;
01260       }
01261       SetTownIndex(t, tid);
01262     }
01263   }
01264 }
01265 
01266 static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
01267 {
01268   uint z;
01269   Slope tileh = GetTileSlope(tile, &z);
01270 
01271   if (tileh == SLOPE_FLAT) return z;
01272   if (IsNormalRoad(tile)) {
01273     Foundation f = GetRoadFoundation(tileh, GetAllRoadBits(tile));
01274     z += ApplyFoundationToSlope(f, &tileh);
01275     return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
01276   } else {
01277     return z + TILE_HEIGHT;
01278   }
01279 }
01280 
01281 static Foundation GetFoundation_Road(TileIndex tile, Slope tileh)
01282 {
01283   if (IsNormalRoad(tile)) {
01284     return GetRoadFoundation(tileh, GetAllRoadBits(tile));
01285   } else {
01286     return FlatteningFoundation(tileh);
01287   }
01288 }
01289 
01290 static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
01291 {
01292   /* not used */
01293 }
01294 
01295 static void AnimateTile_Road(TileIndex tile)
01296 {
01297   if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
01298 }
01299 
01300 
01301 static const Roadside _town_road_types[][2] = {
01302   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01303   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01304   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01305   { ROADSIDE_TREES,         ROADSIDE_TREES },
01306   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01307 };
01308 
01309 static const Roadside _town_road_types_2[][2] = {
01310   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01311   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01312   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01313   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01314   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01315 };
01316 
01317 
01318 static void TileLoop_Road(TileIndex tile)
01319 {
01320   switch (_settings_game.game_creation.landscape) {
01321     case LT_ARCTIC:
01322       if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) {
01323         ToggleSnow(tile);
01324         MarkTileDirtyByTile(tile);
01325       }
01326       break;
01327 
01328     case LT_TROPIC:
01329       if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
01330         ToggleDesert(tile);
01331         MarkTileDirtyByTile(tile);
01332       }
01333       break;
01334   }
01335 
01336   if (IsRoadDepot(tile)) return;
01337 
01338   const Town *t = ClosestTownFromTile(tile, UINT_MAX);
01339   if (!HasRoadWorks(tile)) {
01340     HouseZonesBits grp = HZB_TOWN_EDGE;
01341 
01342     if (t != NULL) {
01343       grp = GetTownRadiusGroup(t, tile);
01344 
01345       /* Show an animation to indicate road work */
01346       if (t->road_build_months != 0 &&
01347           (DistanceManhattan(t->xy, tile) < 8 || grp != HZB_TOWN_EDGE) &&
01348           IsNormalRoad(tile) && CountBits(GetAllRoadBits(tile)) > 1 ) {
01349         if (GetFoundationSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && Chance16(1, 40)) {
01350           StartRoadWorks(tile);
01351 
01352           SndPlayTileFx(SND_21_JACKHAMMER, tile);
01353           CreateEffectVehicleAbove(
01354             TileX(tile) * TILE_SIZE + 7,
01355             TileY(tile) * TILE_SIZE + 7,
01356             0,
01357             EV_BULLDOZER);
01358           MarkTileDirtyByTile(tile);
01359           return;
01360         }
01361       }
01362     }
01363 
01364     {
01365       /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
01366       const Roadside *new_rs = (_settings_game.game_creation.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp];
01367       Roadside cur_rs = GetRoadside(tile);
01368 
01369       /* We have our desired type, do nothing */
01370       if (cur_rs == new_rs[0]) return;
01371 
01372       /* We have the pre-type of the desired type, switch to the desired type */
01373       if (cur_rs == new_rs[1]) {
01374         cur_rs = new_rs[0];
01375       /* We have barren land, install the pre-type */
01376       } else if (cur_rs == ROADSIDE_BARREN) {
01377         cur_rs = new_rs[1];
01378       /* We're totally off limits, remove any installation and make barren land */
01379       } else {
01380         cur_rs = ROADSIDE_BARREN;
01381       }
01382       SetRoadside(tile, cur_rs);
01383       MarkTileDirtyByTile(tile);
01384     }
01385   } else if (IncreaseRoadWorksCounter(tile)) {
01386     TerminateRoadWorks(tile);
01387 
01388     if (_settings_game.economy.mod_road_rebuild) {
01389       /* Generate a nicer town surface */
01390       const RoadBits old_rb = GetAnyRoadBits(tile, ROADTYPE_ROAD);
01391       const RoadBits new_rb = CleanUpRoadBits(tile, old_rb);
01392 
01393       if (old_rb != new_rb) {
01394         RemoveRoad(tile, DC_EXEC | DC_AUTO | DC_NO_WATER, (old_rb ^ new_rb), ROADTYPE_ROAD, true);
01395       }
01396     }
01397 
01398     MarkTileDirtyByTile(tile);
01399   }
01400 }
01401 
01402 static bool ClickTile_Road(TileIndex tile)
01403 {
01404   if (!IsRoadDepot(tile)) return false;
01405 
01406   ShowDepotWindow(tile, VEH_ROAD);
01407   return true;
01408 }
01409 
01410 /* Converts RoadBits to TrackBits */
01411 static const byte _road_trackbits[16] = {
01412   0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
01413 };
01414 
01415 static TrackStatus GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01416 {
01417   TrackdirBits trackdirbits = TRACKDIR_BIT_NONE;
01418   TrackdirBits red_signals = TRACKDIR_BIT_NONE; // crossing barred
01419   switch (mode) {
01420     case TRANSPORT_RAIL:
01421       if (IsLevelCrossing(tile)) trackdirbits = TrackBitsToTrackdirBits(GetCrossingRailBits(tile));
01422       break;
01423 
01424     case TRANSPORT_ROAD:
01425       if ((GetRoadTypes(tile) & sub_mode) == 0) break;
01426       switch (GetRoadTileType(tile)) {
01427         case ROAD_TILE_NORMAL: {
01428           const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 };
01429           RoadType rt = (RoadType)FindFirstBit(sub_mode);
01430           RoadBits bits = GetRoadBits(tile, rt);
01431 
01432           /* no roadbit at this side of tile, return 0 */
01433           if (side != INVALID_DIAGDIR && (DiagDirToRoadBits(side) & bits) == 0) break;
01434 
01435           uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)];
01436           if (!HasRoadWorks(tile)) trackdirbits = (TrackdirBits)(_road_trackbits[bits] * multiplier);
01437           break;
01438         }
01439 
01440         case ROAD_TILE_CROSSING: {
01441           Axis axis = GetCrossingRoadAxis(tile);
01442 
01443           if (side != INVALID_DIAGDIR && axis != DiagDirToAxis(side)) break;
01444 
01445           trackdirbits = TrackBitsToTrackdirBits(AxisToTrackBits(axis));
01446           if (IsCrossingBarred(tile)) red_signals = trackdirbits;
01447           break;
01448         }
01449 
01450         default:
01451         case ROAD_TILE_DEPOT: {
01452           DiagDirection dir = GetRoadDepotDirection(tile);
01453 
01454           if (side != INVALID_DIAGDIR && side != dir) break;
01455 
01456           trackdirbits = TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir));
01457           break;
01458         }
01459       }
01460       break;
01461 
01462     default: break;
01463   }
01464   return CombineTrackStatus(trackdirbits, red_signals);
01465 }
01466 
01467 static const StringID _road_tile_strings[] = {
01468   STR_1814_ROAD,
01469   STR_1814_ROAD,
01470   STR_1814_ROAD,
01471   STR_1815_ROAD_WITH_STREETLIGHTS,
01472   STR_1814_ROAD,
01473   STR_1816_TREE_LINED_ROAD,
01474   STR_1814_ROAD,
01475   STR_1814_ROAD,
01476 };
01477 
01478 static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
01479 {
01480   Owner rail_owner = INVALID_OWNER;
01481   Owner road_owner = INVALID_OWNER;
01482   Owner tram_owner = INVALID_OWNER;
01483 
01484   switch (GetRoadTileType(tile)) {
01485     case ROAD_TILE_CROSSING: {
01486       td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING;
01487       RoadTypes rts = GetRoadTypes(tile);
01488       rail_owner = GetTileOwner(tile);
01489       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01490       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01491       break;
01492     }
01493 
01494     case ROAD_TILE_DEPOT:
01495       td->str = STR_1817_ROAD_VEHICLE_DEPOT;
01496       road_owner = GetTileOwner(tile); // Tile has only one owner, roadtype does not matter
01497       break;
01498 
01499     default: {
01500       RoadTypes rts = GetRoadTypes(tile);
01501       td->str = (HasBit(rts, ROADTYPE_ROAD) ? _road_tile_strings[GetRoadside(tile)] : STR_TRAMWAY);
01502       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01503       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01504       break;
01505     }
01506   }
01507 
01508   /* Now we have to discover, if the tile has only one owner or many:
01509    *   - Find a first_owner of the tile. (Currently road or tram must be present, but this will break when the third type becomes available)
01510    *   - Compare the found owner with the other owners, and test if they differ.
01511    * Note: If road exists it will be the first_owner.
01512    */
01513   Owner first_owner = (road_owner == INVALID_OWNER ? tram_owner : road_owner);
01514   bool mixed_owners = (tram_owner != INVALID_OWNER && tram_owner != first_owner) || (rail_owner != INVALID_OWNER && rail_owner != first_owner);
01515 
01516   if (mixed_owners) {
01517     /* Multiple owners */
01518     td->owner_type[0] = (rail_owner == INVALID_OWNER ? STR_NULL : STR_RAIL_OWNER);
01519     td->owner[0] = rail_owner;
01520     td->owner_type[1] = (road_owner == INVALID_OWNER ? STR_NULL : STR_ROAD_OWNER);
01521     td->owner[1] = road_owner;
01522     td->owner_type[2] = (tram_owner == INVALID_OWNER ? STR_NULL : STR_TRAM_OWNER);
01523     td->owner[2] = tram_owner;
01524   } else {
01525     /* One to rule them all */
01526     td->owner[0] = first_owner;
01527   }
01528 }
01529 
01534 static const byte _roadveh_enter_depot_dir[4] = {
01535   TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
01536 };
01537 
01538 static VehicleEnterTileStatus VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
01539 {
01540   switch (GetRoadTileType(tile)) {
01541     case ROAD_TILE_CROSSING:
01542       if (v->type == VEH_TRAIN) {
01543         /* it should be barred */
01544         assert(IsCrossingBarred(tile));
01545       }
01546       break;
01547 
01548     case ROAD_TILE_DEPOT:
01549       if (v->type == VEH_ROAD &&
01550           v->u.road.frame == RVC_DEPOT_STOP_FRAME &&
01551           _roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) {
01552         v->u.road.state = RVSB_IN_DEPOT;
01553         v->vehstatus |= VS_HIDDEN;
01554         v->direction = ReverseDir(v->direction);
01555         if (v->Next() == NULL) VehicleEnterDepot(v);
01556         v->tile = tile;
01557 
01558         InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01559         return VETSB_ENTERED_WORMHOLE;
01560       }
01561       break;
01562 
01563     default: break;
01564   }
01565   return VETSB_CONTINUE;
01566 }
01567 
01568 
01569 static void ChangeTileOwner_Road(TileIndex tile, Owner old_owner, Owner new_owner)
01570 {
01571   if (IsRoadDepot(tile)) {
01572     if (GetTileOwner(tile) == old_owner) {
01573       if (new_owner == INVALID_OWNER) {
01574         DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01575       } else {
01576         SetTileOwner(tile, new_owner);
01577       }
01578     }
01579     return;
01580   }
01581 
01582   for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01583     /* Update all roadtypes, no matter if they are present */
01584     if (GetRoadOwner(tile, rt) == old_owner) {
01585       SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01586     }
01587   }
01588 
01589   if (IsLevelCrossing(tile)) {
01590     if (GetTileOwner(tile) == old_owner) {
01591       if (new_owner == INVALID_OWNER) {
01592         DoCommand(tile, 0, GetCrossingRailTrack(tile), DC_EXEC | DC_BANKRUPT, CMD_REMOVE_SINGLE_RAIL);
01593       } else {
01594         SetTileOwner(tile, new_owner);
01595       }
01596     }
01597   }
01598 }
01599 
01600 static CommandCost TerraformTile_Road(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
01601 {
01602   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
01603     switch (GetRoadTileType(tile)) {
01604       case ROAD_TILE_CROSSING:
01605         if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) && HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01606         break;
01607 
01608       case ROAD_TILE_DEPOT:
01609         if (AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRoadDepotDirection(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01610         break;
01611 
01612       case ROAD_TILE_NORMAL: {
01613         RoadBits bits = GetAllRoadBits(tile);
01614         RoadBits bits_copy = bits;
01615         /* Check if the slope-road_bits combination is valid at all, i.e. it is safe to call GetRoadFoundation(). */
01616         if (!CmdFailed(CheckRoadSlope(tileh_new, &bits_copy, ROAD_NONE, ROAD_NONE))) {
01617           /* CheckRoadSlope() sometimes changes the road_bits, if it does not agree with them. */
01618           if (bits == bits_copy) {
01619             uint z_old;
01620             Slope tileh_old = GetTileSlope(tile, &z_old);
01621 
01622             /* Get the slope on top of the foundation */
01623             z_old += ApplyFoundationToSlope(GetRoadFoundation(tileh_old, bits), &tileh_old);
01624             z_new += ApplyFoundationToSlope(GetRoadFoundation(tileh_new, bits), &tileh_new);
01625 
01626             /* The surface slope must not be changed */
01627             if ((z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01628           }
01629         }
01630         break;
01631       }
01632 
01633       default: NOT_REACHED();
01634     }
01635   }
01636 
01637   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01638 }
01639 
01641 extern const TileTypeProcs _tile_type_road_procs = {
01642   DrawTile_Road,           // draw_tile_proc
01643   GetSlopeZ_Road,          // get_slope_z_proc
01644   ClearTile_Road,          // clear_tile_proc
01645   GetAcceptedCargo_Road,   // get_accepted_cargo_proc
01646   GetTileDesc_Road,        // get_tile_desc_proc
01647   GetTileTrackStatus_Road, // get_tile_track_status_proc
01648   ClickTile_Road,          // click_tile_proc
01649   AnimateTile_Road,        // animate_tile_proc
01650   TileLoop_Road,           // tile_loop_clear
01651   ChangeTileOwner_Road,    // change_tile_owner_clear
01652   NULL,                    // get_produced_cargo_proc
01653   VehicleEnter_Road,       // vehicle_enter_tile_proc
01654   GetFoundation_Road,      // get_foundation_proc
01655   TerraformTile_Road,      // terraform_tile_proc
01656 };

Generated on Mon Jun 8 23:04:06 2009 for OpenTTD by  doxygen 1.5.6