road_cmd.cpp

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00001 /* $Id: road_cmd.cpp 15454 2009-02-11 20:41:17Z 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 "vehicle_base.h"
00024 #include "sound_func.h"
00025 #include "tunnelbridge.h"
00026 #include "cheat_type.h"
00027 #include "functions.h"
00028 #include "effectvehicle_func.h"
00029 #include "elrail_func.h"
00030 #include "roadveh.h"
00031 
00032 #include "table/sprites.h"
00033 #include "table/strings.h"
00034 
00039 bool RoadVehiclesAreBuilt()
00040 {
00041   const Vehicle *v;
00042 
00043   FOR_ALL_VEHICLES(v) {
00044     if (v->type == VEH_ROAD) return true;
00045   }
00046   return false;
00047 }
00048 
00049 #define M(x) (1 << (x))
00050 /* Level crossings may only be built on these slopes */
00051 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));
00052 #undef M
00053 
00054 /* Invalid RoadBits on slopes  */
00055 static const RoadBits _invalid_tileh_slopes_road[2][15] = {
00056   /* The inverse of the mixable RoadBits on a leveled slope */
00057   {
00058     ROAD_NONE,         // SLOPE_FLAT
00059     ROAD_NE | ROAD_SE, // SLOPE_W
00060     ROAD_NE | ROAD_NW, // SLOPE_S
00061 
00062     ROAD_NE,           // SLOPE_SW
00063     ROAD_NW | ROAD_SW, // SLOPE_E
00064     ROAD_NONE,         // SLOPE_EW
00065 
00066     ROAD_NW,           // SLOPE_SE
00067     ROAD_NONE,         // SLOPE_WSE
00068     ROAD_SE | ROAD_SW, // SLOPE_N
00069 
00070     ROAD_SE,           // SLOPE_NW
00071     ROAD_NONE,         // SLOPE_NS
00072     ROAD_NONE,         // SLOPE_ENW
00073 
00074     ROAD_SW,           // SLOPE_NE
00075     ROAD_NONE,         // SLOPE_SEN
00076     ROAD_NONE          // SLOPE_NWS
00077   },
00078   /* The inverse of the allowed straight roads on a slope
00079    * (with and without a foundation). */
00080   {
00081     ROAD_NONE, // SLOPE_FLAT
00082     ROAD_NONE, // SLOPE_W    Foundation
00083     ROAD_NONE, // SLOPE_S    Foundation
00084 
00085     ROAD_Y,    // SLOPE_SW
00086     ROAD_NONE, // SLOPE_E    Foundation
00087     ROAD_ALL,  // SLOPE_EW
00088 
00089     ROAD_X,    // SLOPE_SE
00090     ROAD_ALL,  // SLOPE_WSE
00091     ROAD_NONE, // SLOPE_N    Foundation
00092 
00093     ROAD_X,    // SLOPE_NW
00094     ROAD_ALL,  // SLOPE_NS
00095     ROAD_ALL,  // SLOPE_ENW
00096 
00097     ROAD_Y,    // SLOPE_NE
00098     ROAD_ALL,  // SLOPE_SEN
00099     ROAD_ALL   // SLOPE_NW
00100   }
00101 };
00102 
00103 Foundation GetRoadFoundation(Slope tileh, RoadBits bits);
00104 
00115 bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, RoadType rt, DoCommandFlag flags, bool town_check)
00116 {
00117   if (_game_mode == GM_EDITOR || remove == ROAD_NONE) return true;
00118 
00119   /* Water can always flood and towns can always remove "normal" road pieces.
00120    * Towns are not be allowed to remove non "normal" road pieces, like tram
00121    * tracks as that would result in trams that cannot turn. */
00122   if (_current_company == OWNER_WATER ||
00123       (rt == ROADTYPE_ROAD && !IsValidCompanyID(_current_company))) return true;
00124 
00125   /* Only do the special processing if the road is owned
00126    * by a town */
00127   if (owner != OWNER_TOWN) return (owner == OWNER_NONE) || CheckOwnership(owner);
00128 
00129   if (!town_check) return true;
00130 
00131   if (_cheats.magic_bulldozer.value) return true;
00132 
00133   Town *t = ClosestTownFromTile(tile, UINT_MAX);
00134   if (t == NULL) return true;
00135 
00136   /* check if you're allowed to remove the street owned by a town
00137    * removal allowance depends on difficulty setting */
00138   if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return false;
00139 
00140   /* Get a bitmask of which neighbouring roads has a tile */
00141   RoadBits n = ROAD_NONE;
00142   RoadBits present = GetAnyRoadBits(tile, rt);
00143   if (present & ROAD_NE && GetAnyRoadBits(TILE_ADDXY(tile, -1,  0), rt) & ROAD_SW) n |= ROAD_NE;
00144   if (present & ROAD_SE && GetAnyRoadBits(TILE_ADDXY(tile,  0,  1), rt) & ROAD_NW) n |= ROAD_SE;
00145   if (present & ROAD_SW && GetAnyRoadBits(TILE_ADDXY(tile,  1,  0), rt) & ROAD_NE) n |= ROAD_SW;
00146   if (present & ROAD_NW && GetAnyRoadBits(TILE_ADDXY(tile,  0, -1), rt) & ROAD_SE) n |= ROAD_NW;
00147 
00148   int rating_decrease = RATING_ROAD_DOWN_STEP_EDGE;
00149   /* If 0 or 1 bits are set in n, or if no bits that match the bits to remove,
00150    * then allow it */
00151   if (KillFirstBit(n) != ROAD_NONE && (n & remove) != ROAD_NONE) {
00152     /* you can remove all kind of roads with extra dynamite */
00153     if (!_settings_game.construction.extra_dynamite) {
00154       SetDParam(0, t->index);
00155       _error_message = STR_2009_LOCAL_AUTHORITY_REFUSES;
00156       return false;
00157     }
00158     rating_decrease = RATING_ROAD_DOWN_STEP_INNER;
00159   }
00160   ChangeTownRating(t, rating_decrease, RATING_ROAD_MINIMUM, flags);
00161 
00162   return true;
00163 }
00164 
00165 
00173 static CommandCost RemoveRoad(TileIndex tile, DoCommandFlag flags, RoadBits pieces, RoadType rt, bool crossing_check, bool town_check = true)
00174 {
00175   RoadTypes rts = GetRoadTypes(tile);
00176   /* The tile doesn't have the given road type */
00177   if (!HasBit(rts, rt)) return CMD_ERROR;
00178 
00179   bool town_road_under_stop = false;
00180 
00181   switch (GetTileType(tile)) {
00182     case MP_ROAD:
00183       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00184       break;
00185 
00186     case MP_STATION:
00187       if (!IsDriveThroughStopTile(tile)) return CMD_ERROR;
00188       if (rt == ROADTYPE_ROAD) town_road_under_stop = GetStopBuiltOnTownRoad(tile);
00189       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00190       break;
00191 
00192     case MP_TUNNELBRIDGE:
00193       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00194       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00195       break;
00196 
00197     default:
00198       return CMD_ERROR;
00199   }
00200 
00201   if (!CheckAllowRemoveRoad(tile, pieces, town_road_under_stop ? OWNER_TOWN : GetRoadOwner(tile, rt), rt, flags, town_check)) return CMD_ERROR;
00202 
00203   if (!IsTileType(tile, MP_ROAD)) {
00204     /* If it's the last roadtype, just clear the whole tile */
00205     if (rts == RoadTypeToRoadTypes(rt)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00206 
00207     CommandCost cost(EXPENSES_CONSTRUCTION);
00208     if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00209       TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00210       /* Pay for *every* tile of the bridge or tunnel */
00211       cost.AddCost((GetTunnelBridgeLength(other_end, tile) + 2) * _price.remove_road);
00212       if (flags & DC_EXEC) {
00213         SetRoadTypes(other_end, GetRoadTypes(other_end) & ~RoadTypeToRoadTypes(rt));
00214         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00215 
00216         /* Mark tiles diry that have been repaved */
00217         MarkTileDirtyByTile(tile);
00218         MarkTileDirtyByTile(other_end);
00219         if (IsBridge(tile)) {
00220           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00221 
00222           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00223         }
00224       }
00225     } else {
00226       assert(IsDriveThroughStopTile(tile));
00227       cost.AddCost(_price.remove_road * 2);
00228       if (flags & DC_EXEC) {
00229         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00230         MarkTileDirtyByTile(tile);
00231       }
00232     }
00233     return cost;
00234   }
00235 
00236   switch (GetRoadTileType(tile)) {
00237     case ROAD_TILE_NORMAL: {
00238       const Slope tileh = GetTileSlope(tile, NULL);
00239       RoadBits present = GetRoadBits(tile, rt);
00240       const RoadBits other = GetOtherRoadBits(tile, rt);
00241       const Foundation f = GetRoadFoundation(tileh, present);
00242 
00243       if (HasRoadWorks(tile) && _current_company != OWNER_WATER) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00244 
00245       /* Autocomplete to a straight road
00246        * @li on steep slopes
00247        * @li if the bits of the other roadtypes result in another foundation
00248        * @li if build on slopes is disabled */
00249       if (IsSteepSlope(tileh) || (IsStraightRoad(other) &&
00250           (other & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) != ROAD_NONE) ||
00251           (tileh != SLOPE_FLAT && !_settings_game.construction.build_on_slopes)) {
00252         pieces |= MirrorRoadBits(pieces);
00253       }
00254 
00255       /* limit the bits to delete to the existing bits. */
00256       pieces &= present;
00257       if (pieces == ROAD_NONE) return CMD_ERROR;
00258 
00259       /* Now set present what it will be after the remove */
00260       present ^= pieces;
00261 
00262       /* Check for invalid RoadBit combinations on slopes */
00263       if (tileh != SLOPE_FLAT && present != ROAD_NONE &&
00264           (present & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) == present) {
00265         return CMD_ERROR;
00266       }
00267 
00268       if (flags & DC_EXEC) {
00269         if (HasRoadWorks(tile)) {
00270           /* flooding tile with road works, don't forget to remove the effect vehicle too */
00271           assert(_current_company == OWNER_WATER);
00272           Vehicle *v;
00273           FOR_ALL_VEHICLES(v) {
00274             if (v->type == VEH_EFFECT && TileVirtXY(v->x_pos, v->y_pos) == tile) {
00275               delete v;
00276             }
00277           }
00278         }
00279         if (present == ROAD_NONE) {
00280           RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00281           if (rts == ROADTYPES_NONE) {
00282             /* Includes MarkTileDirtyByTile() */
00283             DoClearSquare(tile);
00284           } else {
00285             if (rt == ROADTYPE_ROAD && IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN)) {
00286               /* Update nearest-town index */
00287               const Town *town = CalcClosestTownFromTile(tile, UINT_MAX);
00288               SetTownIndex(tile, town == NULL ? (TownID)INVALID_TOWN : town->index);
00289             }
00290             SetRoadBits(tile, ROAD_NONE, rt);
00291             SetRoadTypes(tile, rts);
00292             MarkTileDirtyByTile(tile);
00293           }
00294         } else {
00295           /* When bits are removed, you *always* end up with something that
00296            * is not a complete straight road tile. However, trams do not have
00297            * onewayness, so they cannot remove it either. */
00298           if (rt != ROADTYPE_TRAM) SetDisallowedRoadDirections(tile, DRD_NONE);
00299           SetRoadBits(tile, present, rt);
00300           MarkTileDirtyByTile(tile);
00301         }
00302       }
00303 
00304       /* If we change the foundation we have to pay for it. */
00305       return CommandCost(EXPENSES_CONSTRUCTION, CountBits(pieces) * _price.remove_road +
00306           ((GetRoadFoundation(tileh, present) != f) ? _price.terraform : (Money)0));
00307     }
00308 
00309     case ROAD_TILE_CROSSING: {
00310       if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
00311         return CMD_ERROR;
00312       }
00313 
00314       /* Don't allow road to be removed from the crossing when there is tram;
00315        * we can't draw the crossing without roadbits ;) */
00316       if (rt == ROADTYPE_ROAD && HasTileRoadType(tile, ROADTYPE_TRAM) && (flags & DC_EXEC || crossing_check)) return CMD_ERROR;
00317 
00318       if (flags & DC_EXEC) {
00319         RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00320         if (rts == ROADTYPES_NONE) {
00321           TrackBits tracks = GetCrossingRailBits(tile);
00322           bool reserved = GetCrossingReservation(tile);
00323           MakeRailNormal(tile, GetTileOwner(tile), tracks, GetRailType(tile));
00324           if (reserved) SetTrackReservation(tile, tracks);
00325         } else {
00326           SetRoadTypes(tile, rts);
00327           /* If we ever get HWAY and it is possible without road then we will need to promote ownership and invalidate town index here, too */
00328         }
00329         MarkTileDirtyByTile(tile);
00330         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00331       }
00332       return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road * 2);
00333     }
00334 
00335     default:
00336     case ROAD_TILE_DEPOT:
00337       return CMD_ERROR;
00338   }
00339 }
00340 
00341 
00349 CommandCost CmdRemoveRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00350 {
00351   RoadType rt = (RoadType)GB(p1, 4, 2);
00352   if (!IsValidRoadType(rt)) return CMD_ERROR;
00353 
00354   RoadBits pieces = Extract<RoadBits, 0>(p1);
00355 
00356   return RemoveRoad(tile, flags, pieces, rt, true);
00357 }
00358 
00370 static CommandCost CheckRoadSlope(Slope tileh, RoadBits *pieces, RoadBits existing, RoadBits other)
00371 {
00372   /* Remove already build pieces */
00373   CLRBITS(*pieces, existing);
00374 
00375   /* If we can't build anything stop here */
00376   if (*pieces == ROAD_NONE) return CMD_ERROR;
00377 
00378   /* All RoadBit combos are valid on flat land */
00379   if (tileh == SLOPE_FLAT) return CommandCost();
00380 
00381   /* Proceed steep Slopes first to reduce lookup table size */
00382   if (IsSteepSlope(tileh)) {
00383     /* Force straight roads. */
00384     *pieces |= MirrorRoadBits(*pieces);
00385 
00386     /* Use existing as all existing since only straight
00387      * roads are allowed here. */
00388     existing |= other;
00389 
00390     if ((existing == ROAD_NONE || existing == *pieces) && IsStraightRoad(*pieces)) {
00391       return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00392     }
00393     return CMD_ERROR;
00394   }
00395 
00396   /* Save the merge of all bits of the current type */
00397   RoadBits type_bits = existing | *pieces;
00398 
00399   /* Roads on slopes */
00400   if (_settings_game.construction.build_on_slopes && (_invalid_tileh_slopes_road[0][tileh] & (other | type_bits)) == ROAD_NONE) {
00401 
00402     /* If we add leveling we've got to pay for it */
00403     if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00404 
00405     return CommandCost();
00406   }
00407 
00408   /* Autocomplete uphill roads */
00409   *pieces |= MirrorRoadBits(*pieces);
00410   type_bits = existing | *pieces;
00411 
00412   /* Uphill roads */
00413   if (IsStraightRoad(type_bits) && (other == type_bits || other == ROAD_NONE) &&
00414       (_invalid_tileh_slopes_road[1][tileh] & (other | type_bits)) == ROAD_NONE) {
00415 
00416     /* Slopes with foundation ? */
00417     if (IsSlopeWithOneCornerRaised(tileh)) {
00418 
00419       /* Prevent build on slopes if it isn't allowed */
00420       if (_settings_game.construction.build_on_slopes) {
00421 
00422         /* If we add foundation we've got to pay for it */
00423         if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00424 
00425         return CommandCost();
00426       }
00427     } else {
00428       if (CountBits(existing) == 1) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00429       return CommandCost();
00430     }
00431   }
00432   return CMD_ERROR;
00433 }
00434 
00443 CommandCost CmdBuildRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00444 {
00445   CommandCost cost(EXPENSES_CONSTRUCTION);
00446 
00447   RoadBits existing = ROAD_NONE;
00448   RoadBits other_bits = ROAD_NONE;
00449 
00450   /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
00451    * if a non-company is building the road */
00452   if ((IsValidCompanyID(_current_company) && p2 != 0) || (_current_company == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR;
00453   if (_current_company != OWNER_TOWN) {
00454     const Town *town = CalcClosestTownFromTile(tile, UINT_MAX);
00455     p2 = (town != NULL) ? town->index : (TownID)INVALID_TOWN;
00456   }
00457 
00458   RoadBits pieces = Extract<RoadBits, 0>(p1);
00459 
00460   /* do not allow building 'zero' road bits, code wouldn't handle it */
00461   if (pieces == ROAD_NONE) return CMD_ERROR;
00462 
00463   RoadType rt = (RoadType)GB(p1, 4, 2);
00464   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00465 
00466   DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2);
00467 
00468   Slope tileh = GetTileSlope(tile, NULL);
00469 
00470   switch (GetTileType(tile)) {
00471     case MP_ROAD:
00472       switch (GetRoadTileType(tile)) {
00473         case ROAD_TILE_NORMAL: {
00474           if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00475 
00476           other_bits = GetOtherRoadBits(tile, rt);
00477           if (!HasTileRoadType(tile, rt)) break;
00478 
00479           existing = GetRoadBits(tile, rt);
00480           bool crossing = !IsStraightRoad(existing | pieces);
00481           if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) {
00482             /* Junctions cannot be one-way */
00483             return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00484           }
00485           if ((existing & pieces) == pieces) {
00486             /* We only want to set the (dis)allowed road directions */
00487             if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && IsRoadOwner(tile, ROADTYPE_ROAD, _current_company)) {
00488               if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00489 
00490               if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00491 
00492               /* Ignore half built tiles */
00493               if (flags & DC_EXEC && rt != ROADTYPE_TRAM && IsStraightRoad(existing)) {
00494                 SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd);
00495                 MarkTileDirtyByTile(tile);
00496               }
00497               return CommandCost();
00498             }
00499             return_cmd_error(STR_1007_ALREADY_BUILT);
00500           }
00501         } break;
00502 
00503         case ROAD_TILE_CROSSING:
00504           other_bits = GetCrossingRoadBits(tile);
00505           if (pieces & ComplementRoadBits(other_bits)) goto do_clear;
00506           pieces = other_bits; // we need to pay for both roadbits
00507 
00508           if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00509           break;
00510 
00511         default:
00512         case ROAD_TILE_DEPOT:
00513           goto do_clear;
00514       }
00515       break;
00516 
00517     case MP_RAILWAY: {
00518       if (IsSteepSlope(tileh)) {
00519         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00520       }
00521 
00522       /* Level crossings may only be built on these slopes */
00523       if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) {
00524         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00525       }
00526 
00527       if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
00528 
00529       Axis roaddir;
00530       switch (GetTrackBits(tile)) {
00531         case TRACK_BIT_X:
00532           if (pieces & ROAD_X) goto do_clear;
00533           roaddir = AXIS_Y;
00534           break;
00535 
00536         case TRACK_BIT_Y:
00537           if (pieces & ROAD_Y) goto do_clear;
00538           roaddir = AXIS_X;
00539           break;
00540 
00541         default: goto do_clear;
00542       }
00543 
00544       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00545 
00546       if (flags & DC_EXEC) {
00547         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00548         /* Always add road to the roadtypes (can't draw without it) */
00549         bool reserved = HasBit(GetTrackReservation(tile), AxisToTrack(OtherAxis(roaddir)));
00550         MakeRoadCrossing(tile, _current_company, _current_company, _current_company, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2);
00551         SetCrossingReservation(tile, reserved);
00552         UpdateLevelCrossing(tile, false);
00553         MarkTileDirtyByTile(tile);
00554       }
00555       return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));
00556     }
00557 
00558     case MP_STATION: {
00559       if (!IsDriveThroughStopTile(tile)) goto do_clear;
00560 
00561       RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));
00562       if (pieces & ~curbits) goto do_clear;
00563       pieces = curbits; // we need to pay for both roadbits
00564 
00565       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00566     } break;
00567 
00568     case MP_TUNNELBRIDGE:
00569       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00570       if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;
00571       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00572       /* Don't allow adding roadtype to the bridge/tunnel when vehicles are already driving on it */
00573       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00574       break;
00575 
00576     default: {
00577 do_clear:;
00578       CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00579       if (CmdFailed(ret)) return ret;
00580       cost.AddCost(ret);
00581     } break;
00582   }
00583 
00584   if (other_bits != pieces) {
00585     /* Check the foundation/slopes when adding road/tram bits */
00586     CommandCost ret = CheckRoadSlope(tileh, &pieces, existing, other_bits);
00587     /* Return an error if we need to build a foundation (ret != 0) but the
00588      * current setting is turned off */
00589     if (CmdFailed(ret) || (ret.GetCost() != 0 && !_settings_game.construction.build_on_slopes)) {
00590       return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00591     }
00592     cost.AddCost(ret);
00593   }
00594 
00595   if (IsTileType(tile, MP_ROAD)) {
00596     /* Don't put the pieces that already exist */
00597     pieces &= ComplementRoadBits(existing);
00598 
00599     /* Check if new road bits will have the same foundation as other existing road types */
00600     if (IsNormalRoad(tile)) {
00601       Slope slope = GetTileSlope(tile, NULL);
00602       Foundation found_new = GetRoadFoundation(slope, pieces | existing);
00603 
00604       /* Test if all other roadtypes can be built at that foundation */
00605       for (RoadType rtest = ROADTYPE_ROAD; rtest < ROADTYPE_END; rtest++) {
00606         if (rtest != rt) { // check only other road types
00607           RoadBits bits = GetRoadBits(tile, rtest);
00608           /* do not check if there are not road bits of given type */
00609           if (bits != ROAD_NONE && GetRoadFoundation(slope, bits) != found_new) {
00610             return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00611           }
00612         }
00613       }
00614     }
00615   }
00616 
00617   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00618 
00619   cost.AddCost(CountBits(pieces) * _price.build_road);
00620   if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00621     /* Pay for *every* tile of the bridge or tunnel */
00622     cost.MultiplyCost(GetTunnelBridgeLength(GetOtherTunnelBridgeEnd(tile), tile) + 2);
00623   }
00624 
00625   if (flags & DC_EXEC) {
00626     switch (GetTileType(tile)) {
00627       case MP_ROAD: {
00628         RoadTileType rtt = GetRoadTileType(tile);
00629         if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) {
00630           SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00631           SetRoadOwner(tile, rt, _current_company);
00632           if (rt == ROADTYPE_ROAD) SetTownIndex(tile, p2);
00633         }
00634         if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt);
00635       } break;
00636 
00637       case MP_TUNNELBRIDGE: {
00638         TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00639 
00640         SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt));
00641         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00642 
00643         /* Mark tiles diry that have been repaved */
00644         MarkTileDirtyByTile(other_end);
00645         MarkTileDirtyByTile(tile);
00646         if (IsBridge(tile)) {
00647           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00648 
00649           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00650         }
00651       } break;
00652 
00653       case MP_STATION:
00654         assert(IsDriveThroughStopTile(tile));
00655         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00656         if (rt == ROADTYPE_ROAD) SetStopBuiltOnTownRoad(tile, false);
00657         break;
00658 
00659       default:
00660         MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_company, _current_company, _current_company);
00661         break;
00662     }
00663 
00664     if (rt != ROADTYPE_TRAM && IsNormalRoadTile(tile)) {
00665       existing |= pieces;
00666       SetDisallowedRoadDirections(tile, IsStraightRoad(existing) ?
00667           GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE);
00668     }
00669 
00670     MarkTileDirtyByTile(tile);
00671   }
00672   return cost;
00673 }
00674 
00686 CommandCost CmdBuildLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00687 {
00688   CommandCost cost(EXPENSES_CONSTRUCTION);
00689   bool had_bridge = false;
00690   bool had_tunnel = false;
00691   bool had_success = false;
00692   DisallowedRoadDirections drd = DRD_NORTHBOUND;
00693 
00694   _error_message = INVALID_STRING_ID;
00695 
00696   if (p1 >= MapSize()) return CMD_ERROR;
00697 
00698   TileIndex start_tile = p1;
00699   RoadType rt = (RoadType)GB(p2, 3, 2);
00700   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00701 
00702   /* Only drag in X or Y direction dictated by the direction variable */
00703   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00704   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00705 
00706   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00707   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00708     TileIndex t = start_tile;
00709     start_tile = end_tile;
00710     end_tile = t;
00711     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00712     drd = DRD_SOUTHBOUND;
00713   }
00714 
00715   /* On the X-axis, we have to swap the initial bits, so they
00716    * will be interpreted correctly in the GTTS. Futhermore
00717    * when you just 'click' on one tile to build them. */
00718   if (HasBit(p2, 2) == (start_tile == end_tile && HasBit(p2, 0) == HasBit(p2, 1))) drd ^= DRD_BOTH;
00719   /* No disallowed direction bits have to be toggled */
00720   if (!HasBit(p2, 5)) drd = DRD_NONE;
00721 
00722   TileIndex tile = start_tile;
00723   /* Start tile is the small number. */
00724   for (;;) {
00725     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00726 
00727     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00728     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00729 
00730     _error_message = INVALID_STRING_ID;
00731     CommandCost ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD);
00732     if (CmdFailed(ret)) {
00733       if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
00734     } else {
00735       had_success = true;
00736       /* Only pay for the upgrade on one side of the bridges and tunnels */
00737       if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00738         if (IsBridge(tile)) {
00739           if ((!had_bridge || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00740             cost.AddCost(ret);
00741           }
00742           had_bridge = true;
00743         } else { // IsTunnel(tile)
00744           if ((!had_tunnel || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00745             cost.AddCost(ret);
00746           }
00747           had_tunnel = true;
00748         }
00749       } else {
00750         cost.AddCost(ret);
00751       }
00752     }
00753 
00754     if (tile == end_tile) break;
00755 
00756     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00757   }
00758 
00759   return !had_success ? CMD_ERROR : cost;
00760 }
00761 
00772 CommandCost CmdRemoveLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00773 {
00774   CommandCost cost(EXPENSES_CONSTRUCTION);
00775 
00776   if (p1 >= MapSize()) return CMD_ERROR;
00777 
00778   TileIndex start_tile = p1;
00779   RoadType rt = (RoadType)GB(p2, 3, 2);
00780   if (!IsValidRoadType(rt)) return CMD_ERROR;
00781 
00782   /* Only drag in X or Y direction dictated by the direction variable */
00783   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00784   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00785 
00786   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00787   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00788     TileIndex t = start_tile;
00789     start_tile = end_tile;
00790     end_tile = t;
00791     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00792   }
00793 
00794   Money money = GetAvailableMoneyForCommand();
00795   TileIndex tile = start_tile;
00796   /* Start tile is the small number. */
00797   for (;;) {
00798     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00799 
00800     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00801     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00802 
00803     /* try to remove the halves. */
00804     if (bits != 0) {
00805       CommandCost ret = RemoveRoad(tile, flags & ~DC_EXEC, bits, rt, true);
00806       if (CmdSucceeded(ret)) {
00807         if (flags & DC_EXEC) {
00808           money -= ret.GetCost();
00809           if (money < 0) {
00810             _additional_cash_required = DoCommand(end_tile, start_tile, p2, flags & ~DC_EXEC, CMD_REMOVE_LONG_ROAD).GetCost();
00811             return cost;
00812           }
00813           RemoveRoad(tile, flags, bits, rt, true, false);
00814         }
00815         cost.AddCost(ret);
00816       }
00817     }
00818 
00819     if (tile == end_tile) break;
00820 
00821     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00822   }
00823 
00824   return (cost.GetCost() == 0) ? CMD_ERROR : cost;
00825 }
00826 
00837 CommandCost CmdBuildRoadDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00838 {
00839   DiagDirection dir = Extract<DiagDirection, 0>(p1);
00840   RoadType rt = (RoadType)GB(p1, 2, 2);
00841 
00842   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00843 
00844   Slope tileh = GetTileSlope(tile, NULL);
00845   if (tileh != SLOPE_FLAT && (
00846         !_settings_game.construction.build_on_slopes ||
00847         IsSteepSlope(tileh) ||
00848         !CanBuildDepotByTileh(dir, tileh)
00849       )) {
00850     return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
00851   }
00852 
00853   CommandCost cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00854   if (CmdFailed(cost)) return CMD_ERROR;
00855 
00856   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
00857 
00858   if (!Depot::CanAllocateItem()) return CMD_ERROR;
00859 
00860   if (flags & DC_EXEC) {
00861     Depot *dep = new Depot(tile);
00862     dep->town_index = ClosestTownFromTile(tile, UINT_MAX)->index;
00863 
00864     MakeRoadDepot(tile, _current_company, dir, rt, dep->town_index);
00865     MarkTileDirtyByTile(tile);
00866   }
00867   return cost.AddCost(_price.build_road_depot);
00868 }
00869 
00870 static CommandCost RemoveRoadDepot(TileIndex tile, DoCommandFlag flags)
00871 {
00872   if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
00873 
00874   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00875 
00876   if (flags & DC_EXEC) {
00877     DoClearSquare(tile);
00878     delete GetDepotByTile(tile);
00879   }
00880 
00881   return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road_depot);
00882 }
00883 
00884 static CommandCost ClearTile_Road(TileIndex tile, DoCommandFlag flags)
00885 {
00886   switch (GetRoadTileType(tile)) {
00887     case ROAD_TILE_NORMAL: {
00888       RoadBits b = GetAllRoadBits(tile);
00889 
00890       /* Clear the road if only one piece is on the tile OR we are not using the DC_AUTO flag */
00891       if ((CountBits(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) || !(flags & DC_AUTO)) {
00892         RoadTypes rts = GetRoadTypes(tile);
00893         CommandCost ret(EXPENSES_CONSTRUCTION);
00894         for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
00895           if (HasBit(rts, rt)) {
00896             CommandCost tmp_ret = RemoveRoad(tile, flags, GetRoadBits(tile, rt), rt, true);
00897             if (CmdFailed(tmp_ret)) return tmp_ret;
00898             ret.AddCost(tmp_ret);
00899           }
00900         }
00901         return ret;
00902       }
00903       return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00904     }
00905 
00906     case ROAD_TILE_CROSSING: {
00907       RoadTypes rts = GetRoadTypes(tile);
00908       CommandCost ret(EXPENSES_CONSTRUCTION);
00909 
00910       if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00911 
00912       /* Must iterate over the roadtypes in a reverse manner because
00913        * tram tracks must be removed before the road bits. */
00914       RoadType rt = ROADTYPE_HWAY;
00915       do {
00916         if (HasBit(rts, rt)) {
00917           CommandCost tmp_ret = RemoveRoad(tile, flags, GetCrossingRoadBits(tile), rt, false);
00918           if (CmdFailed(tmp_ret)) return tmp_ret;
00919           ret.AddCost(tmp_ret);
00920         }
00921       } while (rt-- != ROADTYPE_ROAD);
00922 
00923       if (flags & DC_EXEC) {
00924         DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00925       }
00926       return ret;
00927     }
00928 
00929     default:
00930     case ROAD_TILE_DEPOT:
00931       if (flags & DC_AUTO) {
00932         return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
00933       }
00934       return RemoveRoadDepot(tile, flags);
00935   }
00936 }
00937 
00938 
00939 struct DrawRoadTileStruct {
00940   uint16 image;
00941   byte subcoord_x;
00942   byte subcoord_y;
00943 };
00944 
00945 #include "table/road_land.h"
00946 
00954 Foundation GetRoadFoundation(Slope tileh, RoadBits bits)
00955 {
00956   /* Flat land and land without a road doesn't require a foundation */
00957   if (tileh == SLOPE_FLAT || bits == ROAD_NONE) return FOUNDATION_NONE;
00958 
00959   if (!IsSteepSlope(tileh)) {
00960     /* Leveled RoadBits on a slope */
00961     if ((_invalid_tileh_slopes_road[0][tileh] & bits) == ROAD_NONE) return FOUNDATION_LEVELED;
00962 
00963     /* Straight roads without foundation on a slope */
00964     if (!IsSlopeWithOneCornerRaised(tileh) &&
00965         (_invalid_tileh_slopes_road[1][tileh] & bits) == ROAD_NONE)
00966       return FOUNDATION_NONE;
00967   }
00968 
00969   /* Roads on steep Slopes or on Slopes with one corner raised */
00970   return (bits == ROAD_X ? FOUNDATION_INCLINED_X : FOUNDATION_INCLINED_Y);
00971 }
00972 
00973 const byte _road_sloped_sprites[14] = {
00974   0,  0,  2,  0,
00975   0,  1,  0,  0,
00976   3,  0,  0,  0,
00977   0,  0
00978 };
00979 
00990 static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside)
00991 {
00992   return (IsOnSnow(tile) &&
00993       !(_settings_game.game_creation.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) &&
00994         roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS));
00995 }
00996 
01002 void DrawTramCatenary(const TileInfo *ti, RoadBits tram)
01003 {
01004   /* Do not draw catenary if it is invisible */
01005   if (IsInvisibilitySet(TO_CATENARY)) return;
01006 
01007   /* Don't draw the catenary under a low bridge */
01008   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_CATENARY)) {
01009     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01010 
01011     if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
01012   }
01013 
01014   SpriteID front;
01015   SpriteID back;
01016 
01017   if (ti->tileh != SLOPE_FLAT) {
01018     back  = SPR_TRAMWAY_BACK_WIRES_SLOPED  + _road_sloped_sprites[ti->tileh - 1];
01019     front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1];
01020   } else {
01021     back  = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram];
01022     front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram];
01023   }
01024 
01025   AddSortableSpriteToDraw(back,  PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01026   AddSortableSpriteToDraw(front, PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01027 }
01028 
01037 static void DrawRoadDetail(SpriteID img, const TileInfo *ti, int dx, int dy, int h)
01038 {
01039   int x = ti->x | dx;
01040   int y = ti->y | dy;
01041   byte z = ti->z;
01042   if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
01043   AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z);
01044 }
01045 
01050 static void DrawRoadBits(TileInfo *ti)
01051 {
01052   RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD);
01053   RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM);
01054 
01055   SpriteID image = 0;
01056   SpriteID pal = PAL_NONE;
01057 
01058   if (ti->tileh != SLOPE_FLAT) {
01059     DrawFoundation(ti, GetRoadFoundation(ti->tileh, road | tram));
01060 
01061     /* DrawFoundation() modifies ti.
01062      * Default sloped sprites.. */
01063     if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
01064   }
01065 
01066   if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram];
01067 
01068   Roadside roadside = GetRoadside(ti->tile);
01069 
01070   if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01071     image += 19;
01072   } else {
01073     switch (roadside) {
01074       case ROADSIDE_BARREN:           pal = PALETTE_TO_BARE_LAND; break;
01075       case ROADSIDE_GRASS:            break;
01076       case ROADSIDE_GRASS_ROAD_WORKS: break;
01077       default:                        image -= 19; break; // Paved
01078     }
01079   }
01080 
01081   DrawGroundSprite(image, pal);
01082 
01083   /* For tram we overlay the road graphics with either tram tracks only
01084    * (when there is actual road beneath the trams) or with tram tracks
01085    * and some dirts which hides the road graphics */
01086   if (tram != ROAD_NONE) {
01087     if (ti->tileh != SLOPE_FLAT) {
01088       image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET;
01089     } else {
01090       image = _road_tile_sprites_1[tram] - SPR_ROAD_Y;
01091     }
01092     image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY;
01093     DrawGroundSprite(image, pal);
01094   }
01095 
01096   if (road != ROAD_NONE) {
01097     DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile);
01098     if (drd != DRD_NONE) {
01099       DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0);
01100     }
01101   }
01102 
01103   if (HasRoadWorks(ti->tile)) {
01104     /* Road works */
01105     DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE);
01106     return;
01107   }
01108 
01109   if (tram != ROAD_NONE) DrawTramCatenary(ti, tram);
01110 
01111   /* Return if full detail is disabled, or we are zoomed fully out. */
01112   if (!HasBit(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
01113 
01114   /* Do not draw details (street lights, trees) under low bridge */
01115   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && (roadside == ROADSIDE_TREES || roadside == ROADSIDE_STREET_LIGHTS)) {
01116     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01117     uint minz = GetTileMaxZ(ti->tile) + 2 * TILE_HEIGHT;
01118 
01119     if (roadside == ROADSIDE_TREES) minz += TILE_HEIGHT;
01120 
01121     if (height < minz) return;
01122   }
01123 
01124   /* If there are no road bits, return, as there is nothing left to do */
01125   if (CountBits(road) < 2) return;
01126 
01127   /* Draw extra details. */
01128   for (const DrawRoadTileStruct *drts = _road_display_table[roadside][road | tram]; drts->image != 0; drts++) {
01129     DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10);
01130   }
01131 }
01132 
01134 static void DrawTile_Road(TileInfo *ti)
01135 {
01136   switch (GetRoadTileType(ti->tile)) {
01137     case ROAD_TILE_NORMAL:
01138       DrawRoadBits(ti);
01139       break;
01140 
01141     case ROAD_TILE_CROSSING: {
01142       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01143 
01144       SpriteID image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing;
01145       SpriteID pal = PAL_NONE;
01146 
01147       if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
01148       if (IsCrossingBarred(ti->tile)) image += 2;
01149 
01150       Roadside roadside = GetRoadside(ti->tile);
01151 
01152       if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01153         image += 8;
01154       } else {
01155         switch (roadside) {
01156           case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break;
01157           case ROADSIDE_GRASS:  break;
01158           default:              image += 4; break; // Paved
01159         }
01160       }
01161 
01162       DrawGroundSprite(image, pal);
01163 
01164       /* PBS debugging, draw reserved tracks darker */
01165       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && GetCrossingReservation(ti->tile)) {
01166         DrawGroundSprite(GetCrossingRoadAxis(ti->tile) == AXIS_Y ? GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_y : GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_x, PALETTE_CRASH);
01167       }
01168 
01169       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01170         DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal);
01171         DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile));
01172       }
01173       if (HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
01174       break;
01175     }
01176 
01177     default:
01178     case ROAD_TILE_DEPOT: {
01179       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01180 
01181       SpriteID palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
01182 
01183       const DrawTileSprites *dts;
01184       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01185         dts =  &_tram_depot[GetRoadDepotDirection(ti->tile)];
01186       } else {
01187         dts =  &_road_depot[GetRoadDepotDirection(ti->tile)];
01188       }
01189 
01190       DrawGroundSprite(dts->ground.sprite, PAL_NONE);
01191 
01192       /* End now if buildings are invisible */
01193       if (IsInvisibilitySet(TO_BUILDINGS)) break;
01194 
01195       for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01196         SpriteID image = dtss->image.sprite;
01197         SpriteID pal;
01198 
01199         if (!IsTransparencySet(TO_BUILDINGS) && HasBit(image, PALETTE_MODIFIER_COLOUR)) {
01200           pal = palette;
01201         } else {
01202           pal = PAL_NONE;
01203         }
01204 
01205         AddSortableSpriteToDraw(
01206           image, pal,
01207           ti->x + dtss->delta_x, ti->y + dtss->delta_y,
01208           dtss->size_x, dtss->size_y,
01209           dtss->size_z, ti->z,
01210           IsTransparencySet(TO_BUILDINGS)
01211         );
01212       }
01213       break;
01214     }
01215   }
01216   DrawBridgeMiddle(ti);
01217 }
01218 
01219 void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt)
01220 {
01221   SpriteID palette = COMPANY_SPRITE_COLOUR(_local_company);
01222   const DrawTileSprites *dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir];
01223 
01224   x += 33;
01225   y += 17;
01226 
01227   DrawSprite(dts->ground.sprite, PAL_NONE, x, y);
01228 
01229   for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01230     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
01231     SpriteID image = dtss->image.sprite;
01232 
01233     DrawSprite(image, HasBit(image, PALETTE_MODIFIER_COLOUR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
01234   }
01235 }
01236 
01241 void UpdateNearestTownForRoadTiles(bool invalidate)
01242 {
01243   assert(!invalidate || _generating_world);
01244 
01245   for (TileIndex t = 0; t < MapSize(); t++) {
01246     if (IsTileType(t, MP_ROAD) && !HasTownOwnedRoad(t)) {
01247       TownID tid = (TownID)INVALID_TOWN;
01248       if (!invalidate) {
01249         const Town *town = CalcClosestTownFromTile(t, UINT_MAX);
01250         if (town != NULL) tid = town->index;
01251       }
01252       SetTownIndex(t, tid);
01253     }
01254   }
01255 }
01256 
01257 static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
01258 {
01259   uint z;
01260   Slope tileh = GetTileSlope(tile, &z);
01261 
01262   if (tileh == SLOPE_FLAT) return z;
01263   if (IsNormalRoad(tile)) {
01264     Foundation f = GetRoadFoundation(tileh, GetAllRoadBits(tile));
01265     z += ApplyFoundationToSlope(f, &tileh);
01266     return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
01267   } else {
01268     return z + TILE_HEIGHT;
01269   }
01270 }
01271 
01272 static Foundation GetFoundation_Road(TileIndex tile, Slope tileh)
01273 {
01274   if (IsNormalRoad(tile)) {
01275     return GetRoadFoundation(tileh, GetAllRoadBits(tile));
01276   } else {
01277     return FlatteningFoundation(tileh);
01278   }
01279 }
01280 
01281 static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
01282 {
01283   /* not used */
01284 }
01285 
01286 static void AnimateTile_Road(TileIndex tile)
01287 {
01288   if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
01289 }
01290 
01291 
01292 static const Roadside _town_road_types[][2] = {
01293   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01294   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01295   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01296   { ROADSIDE_TREES,         ROADSIDE_TREES },
01297   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01298 };
01299 
01300 static const Roadside _town_road_types_2[][2] = {
01301   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01302   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01303   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01304   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01305   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01306 };
01307 
01308 
01309 static void TileLoop_Road(TileIndex tile)
01310 {
01311   switch (_settings_game.game_creation.landscape) {
01312     case LT_ARCTIC:
01313       if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) {
01314         ToggleSnow(tile);
01315         MarkTileDirtyByTile(tile);
01316       }
01317       break;
01318 
01319     case LT_TROPIC:
01320       if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
01321         ToggleDesert(tile);
01322         MarkTileDirtyByTile(tile);
01323       }
01324       break;
01325   }
01326 
01327   if (IsRoadDepot(tile)) return;
01328 
01329   const Town *t = ClosestTownFromTile(tile, UINT_MAX);
01330   if (!HasRoadWorks(tile)) {
01331     HouseZonesBits grp = HZB_TOWN_EDGE;
01332 
01333     if (t != NULL) {
01334       grp = GetTownRadiusGroup(t, tile);
01335 
01336       /* Show an animation to indicate road work */
01337       if (t->road_build_months != 0 &&
01338           (DistanceManhattan(t->xy, tile) < 8 || grp != HZB_TOWN_EDGE) &&
01339           IsNormalRoad(tile) && CountBits(GetAllRoadBits(tile)) > 1 ) {
01340         if (GetFoundationSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && Chance16(1, 40)) {
01341           StartRoadWorks(tile);
01342 
01343           SndPlayTileFx(SND_21_JACKHAMMER, tile);
01344           CreateEffectVehicleAbove(
01345             TileX(tile) * TILE_SIZE + 7,
01346             TileY(tile) * TILE_SIZE + 7,
01347             0,
01348             EV_BULLDOZER);
01349           MarkTileDirtyByTile(tile);
01350           return;
01351         }
01352       }
01353     }
01354 
01355     {
01356       /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
01357       const Roadside *new_rs = (_settings_game.game_creation.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp];
01358       Roadside cur_rs = GetRoadside(tile);
01359 
01360       /* We have our desired type, do nothing */
01361       if (cur_rs == new_rs[0]) return;
01362 
01363       /* We have the pre-type of the desired type, switch to the desired type */
01364       if (cur_rs == new_rs[1]) {
01365         cur_rs = new_rs[0];
01366       /* We have barren land, install the pre-type */
01367       } else if (cur_rs == ROADSIDE_BARREN) {
01368         cur_rs = new_rs[1];
01369       /* We're totally off limits, remove any installation and make barren land */
01370       } else {
01371         cur_rs = ROADSIDE_BARREN;
01372       }
01373       SetRoadside(tile, cur_rs);
01374       MarkTileDirtyByTile(tile);
01375     }
01376   } else if (IncreaseRoadWorksCounter(tile)) {
01377     TerminateRoadWorks(tile);
01378 
01379     if (_settings_game.economy.mod_road_rebuild) {
01380       /* Generate a nicer town surface */
01381       const RoadBits old_rb = GetAnyRoadBits(tile, ROADTYPE_ROAD);
01382       const RoadBits new_rb = CleanUpRoadBits(tile, old_rb);
01383 
01384       if (old_rb != new_rb) {
01385         RemoveRoad(tile, DC_EXEC | DC_AUTO | DC_NO_WATER, (old_rb ^ new_rb), ROADTYPE_ROAD, true);
01386       }
01387     }
01388 
01389     MarkTileDirtyByTile(tile);
01390   }
01391 }
01392 
01393 static bool ClickTile_Road(TileIndex tile)
01394 {
01395   if (!IsRoadDepot(tile)) return false;
01396 
01397   ShowDepotWindow(tile, VEH_ROAD);
01398   return true;
01399 }
01400 
01401 /* Converts RoadBits to TrackBits */
01402 static const byte _road_trackbits[16] = {
01403   0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
01404 };
01405 
01406 static TrackStatus GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01407 {
01408   TrackdirBits trackdirbits = TRACKDIR_BIT_NONE;
01409   TrackdirBits red_signals = TRACKDIR_BIT_NONE; // crossing barred
01410   switch (mode) {
01411     case TRANSPORT_RAIL:
01412       if (IsLevelCrossing(tile)) trackdirbits = TrackBitsToTrackdirBits(GetCrossingRailBits(tile));
01413       break;
01414 
01415     case TRANSPORT_ROAD:
01416       if ((GetRoadTypes(tile) & sub_mode) == 0) break;
01417       switch (GetRoadTileType(tile)) {
01418         case ROAD_TILE_NORMAL: {
01419           const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 };
01420           RoadType rt = (RoadType)FindFirstBit(sub_mode);
01421           RoadBits bits = GetRoadBits(tile, rt);
01422 
01423           /* no roadbit at this side of tile, return 0 */
01424           if (side != INVALID_DIAGDIR && (DiagDirToRoadBits(side) & bits) == 0) break;
01425 
01426           uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)];
01427           if (!HasRoadWorks(tile)) trackdirbits = (TrackdirBits)(_road_trackbits[bits] * multiplier);
01428           break;
01429         }
01430 
01431         case ROAD_TILE_CROSSING: {
01432           Axis axis = GetCrossingRoadAxis(tile);
01433 
01434           if (side != INVALID_DIAGDIR && axis != DiagDirToAxis(side)) break;
01435 
01436           trackdirbits = TrackBitsToTrackdirBits(AxisToTrackBits(axis));
01437           if (IsCrossingBarred(tile)) red_signals = trackdirbits;
01438           break;
01439         }
01440 
01441         default:
01442         case ROAD_TILE_DEPOT: {
01443           DiagDirection dir = GetRoadDepotDirection(tile);
01444 
01445           if (side != INVALID_DIAGDIR && side != dir) break;
01446 
01447           trackdirbits = TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir));
01448           break;
01449         }
01450       }
01451       break;
01452 
01453     default: break;
01454   }
01455   return CombineTrackStatus(trackdirbits, red_signals);
01456 }
01457 
01458 static const StringID _road_tile_strings[] = {
01459   STR_1814_ROAD,
01460   STR_1814_ROAD,
01461   STR_1814_ROAD,
01462   STR_1815_ROAD_WITH_STREETLIGHTS,
01463   STR_1814_ROAD,
01464   STR_1816_TREE_LINED_ROAD,
01465   STR_1814_ROAD,
01466   STR_1814_ROAD,
01467 };
01468 
01469 static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
01470 {
01471   Owner rail_owner = INVALID_OWNER;
01472   Owner road_owner = INVALID_OWNER;
01473   Owner tram_owner = INVALID_OWNER;
01474 
01475   switch (GetRoadTileType(tile)) {
01476     case ROAD_TILE_CROSSING: {
01477       td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING;
01478       RoadTypes rts = GetRoadTypes(tile);
01479       rail_owner = GetTileOwner(tile);
01480       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01481       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01482       break;
01483     }
01484 
01485     case ROAD_TILE_DEPOT:
01486       td->str = STR_1817_ROAD_VEHICLE_DEPOT;
01487       road_owner = GetTileOwner(tile); // Tile has only one owner, roadtype does not matter
01488       break;
01489 
01490     default: {
01491       RoadTypes rts = GetRoadTypes(tile);
01492       td->str = (HasBit(rts, ROADTYPE_ROAD) ? _road_tile_strings[GetRoadside(tile)] : STR_TRAMWAY);
01493       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01494       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01495       break;
01496     }
01497   }
01498 
01499   /* Now we have to discover, if the tile has only one owner or many:
01500    *   - Find a first_owner of the tile. (Currently road or tram must be present, but this will break when the third type becomes available)
01501    *   - Compare the found owner with the other owners, and test if they differ.
01502    * Note: If road exists it will be the first_owner.
01503    */
01504   Owner first_owner = (road_owner == INVALID_OWNER ? tram_owner : road_owner);
01505   bool mixed_owners = (tram_owner != INVALID_OWNER && tram_owner != first_owner) || (rail_owner != INVALID_OWNER && rail_owner != first_owner);
01506 
01507   if (mixed_owners) {
01508     /* Multiple owners */
01509     td->owner_type[0] = (rail_owner == INVALID_OWNER ? STR_NULL : STR_RAIL_OWNER);
01510     td->owner[0] = rail_owner;
01511     td->owner_type[1] = (road_owner == INVALID_OWNER ? STR_NULL : STR_ROAD_OWNER);
01512     td->owner[1] = road_owner;
01513     td->owner_type[2] = (tram_owner == INVALID_OWNER ? STR_NULL : STR_TRAM_OWNER);
01514     td->owner[2] = tram_owner;
01515   } else {
01516     /* One to rule them all */
01517     td->owner[0] = first_owner;
01518   }
01519 }
01520 
01525 static const byte _roadveh_enter_depot_dir[4] = {
01526   TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
01527 };
01528 
01529 static VehicleEnterTileStatus VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
01530 {
01531   switch (GetRoadTileType(tile)) {
01532     case ROAD_TILE_CROSSING:
01533       if (v->type == VEH_TRAIN) {
01534         /* it should be barred */
01535         assert(IsCrossingBarred(tile));
01536       }
01537       break;
01538 
01539     case ROAD_TILE_DEPOT:
01540       if (v->type == VEH_ROAD &&
01541           v->u.road.frame == RVC_DEPOT_STOP_FRAME &&
01542           _roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) {
01543         v->u.road.state = RVSB_IN_DEPOT;
01544         v->vehstatus |= VS_HIDDEN;
01545         v->direction = ReverseDir(v->direction);
01546         if (v->Next() == NULL) VehicleEnterDepot(v);
01547         v->tile = tile;
01548 
01549         InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01550         return VETSB_ENTERED_WORMHOLE;
01551       }
01552       break;
01553 
01554     default: break;
01555   }
01556   return VETSB_CONTINUE;
01557 }
01558 
01559 
01560 static void ChangeTileOwner_Road(TileIndex tile, Owner old_owner, Owner new_owner)
01561 {
01562   if (IsRoadDepot(tile)) {
01563     if (GetTileOwner(tile) == old_owner) {
01564       if (new_owner == INVALID_OWNER) {
01565         DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01566       } else {
01567         SetTileOwner(tile, new_owner);
01568       }
01569     }
01570     return;
01571   }
01572 
01573   for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01574     /* Update all roadtypes, no matter if they are present */
01575     if (GetRoadOwner(tile, rt) == old_owner) {
01576       SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01577     }
01578   }
01579 
01580   if (IsLevelCrossing(tile)) {
01581     if (GetTileOwner(tile) == old_owner) {
01582       if (new_owner == INVALID_OWNER) {
01583         DoCommand(tile, 0, GetCrossingRailTrack(tile), DC_EXEC | DC_BANKRUPT, CMD_REMOVE_SINGLE_RAIL);
01584       } else {
01585         SetTileOwner(tile, new_owner);
01586       }
01587     }
01588   }
01589 }
01590 
01591 static CommandCost TerraformTile_Road(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
01592 {
01593   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
01594     switch (GetRoadTileType(tile)) {
01595       case ROAD_TILE_CROSSING:
01596         if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) && HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01597         break;
01598 
01599       case ROAD_TILE_DEPOT:
01600         if (AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRoadDepotDirection(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01601         break;
01602 
01603       case ROAD_TILE_NORMAL: {
01604         RoadBits bits = GetAllRoadBits(tile);
01605         RoadBits bits_copy = bits;
01606         /* Check if the slope-road_bits combination is valid at all, i.e. it is safe to call GetRoadFoundation(). */
01607         if (!CmdFailed(CheckRoadSlope(tileh_new, &bits_copy, ROAD_NONE, ROAD_NONE))) {
01608           /* CheckRoadSlope() sometimes changes the road_bits, if it does not agree with them. */
01609           if (bits == bits_copy) {
01610             uint z_old;
01611             Slope tileh_old = GetTileSlope(tile, &z_old);
01612 
01613             /* Get the slope on top of the foundation */
01614             z_old += ApplyFoundationToSlope(GetRoadFoundation(tileh_old, bits), &tileh_old);
01615             z_new += ApplyFoundationToSlope(GetRoadFoundation(tileh_new, bits), &tileh_new);
01616 
01617             /* The surface slope must not be changed */
01618             if ((z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01619           }
01620         }
01621         break;
01622       }
01623 
01624       default: NOT_REACHED();
01625     }
01626   }
01627 
01628   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01629 }
01630 
01632 extern const TileTypeProcs _tile_type_road_procs = {
01633   DrawTile_Road,           // draw_tile_proc
01634   GetSlopeZ_Road,          // get_slope_z_proc
01635   ClearTile_Road,          // clear_tile_proc
01636   GetAcceptedCargo_Road,   // get_accepted_cargo_proc
01637   GetTileDesc_Road,        // get_tile_desc_proc
01638   GetTileTrackStatus_Road, // get_tile_track_status_proc
01639   ClickTile_Road,          // click_tile_proc
01640   AnimateTile_Road,        // animate_tile_proc
01641   TileLoop_Road,           // tile_loop_clear
01642   ChangeTileOwner_Road,    // change_tile_owner_clear
01643   NULL,                    // get_produced_cargo_proc
01644   VehicleEnter_Road,       // vehicle_enter_tile_proc
01645   GetFoundation_Road,      // get_foundation_proc
01646   TerraformTile_Road,      // terraform_tile_proc
01647 };

Generated on Mon Feb 16 23:12:09 2009 for openttd by  doxygen 1.5.6