road_cmd.cpp

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00001 /* $Id: road_cmd.cpp 15704 2009-03-13 23:48:07Z smatz $ */
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         RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00325         if (rts == ROADTYPES_NONE) {
00326           TrackBits tracks = GetCrossingRailBits(tile);
00327           bool reserved = GetCrossingReservation(tile);
00328           MakeRailNormal(tile, GetTileOwner(tile), tracks, GetRailType(tile));
00329           if (reserved) SetTrackReservation(tile, tracks);
00330         } else {
00331           SetRoadTypes(tile, rts);
00332           /* If we ever get HWAY and it is possible without road then we will need to promote ownership and invalidate town index here, too */
00333         }
00334         MarkTileDirtyByTile(tile);
00335         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00336       }
00337       return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road * 2);
00338     }
00339 
00340     default:
00341     case ROAD_TILE_DEPOT:
00342       return CMD_ERROR;
00343   }
00344 }
00345 
00346 
00354 CommandCost CmdRemoveRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00355 {
00356   RoadType rt = (RoadType)GB(p1, 4, 2);
00357   if (!IsValidRoadType(rt)) return CMD_ERROR;
00358 
00359   RoadBits pieces = Extract<RoadBits, 0>(p1);
00360 
00361   return RemoveRoad(tile, flags, pieces, rt, true);
00362 }
00363 
00375 static CommandCost CheckRoadSlope(Slope tileh, RoadBits *pieces, RoadBits existing, RoadBits other)
00376 {
00377   /* Remove already build pieces */
00378   CLRBITS(*pieces, existing);
00379 
00380   /* If we can't build anything stop here */
00381   if (*pieces == ROAD_NONE) return CMD_ERROR;
00382 
00383   /* All RoadBit combos are valid on flat land */
00384   if (tileh == SLOPE_FLAT) return CommandCost();
00385 
00386   /* Proceed steep Slopes first to reduce lookup table size */
00387   if (IsSteepSlope(tileh)) {
00388     /* Force straight roads. */
00389     *pieces |= MirrorRoadBits(*pieces);
00390 
00391     /* Use existing as all existing since only straight
00392      * roads are allowed here. */
00393     existing |= other;
00394 
00395     if ((existing == ROAD_NONE || existing == *pieces) && IsStraightRoad(*pieces)) {
00396       return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00397     }
00398     return CMD_ERROR;
00399   }
00400 
00401   /* Save the merge of all bits of the current type */
00402   RoadBits type_bits = existing | *pieces;
00403 
00404   /* Roads on slopes */
00405   if (_settings_game.construction.build_on_slopes && (_invalid_tileh_slopes_road[0][tileh] & (other | type_bits)) == ROAD_NONE) {
00406 
00407     /* If we add leveling we've got to pay for it */
00408     if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00409 
00410     return CommandCost();
00411   }
00412 
00413   /* Autocomplete uphill roads */
00414   *pieces |= MirrorRoadBits(*pieces);
00415   type_bits = existing | *pieces;
00416 
00417   /* Uphill roads */
00418   if (IsStraightRoad(type_bits) && (other == type_bits || other == ROAD_NONE) &&
00419       (_invalid_tileh_slopes_road[1][tileh] & (other | type_bits)) == ROAD_NONE) {
00420 
00421     /* Slopes with foundation ? */
00422     if (IsSlopeWithOneCornerRaised(tileh)) {
00423 
00424       /* Prevent build on slopes if it isn't allowed */
00425       if (_settings_game.construction.build_on_slopes) {
00426 
00427         /* If we add foundation we've got to pay for it */
00428         if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00429 
00430         return CommandCost();
00431       }
00432     } else {
00433       if (CountBits(existing) == 1) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00434       return CommandCost();
00435     }
00436   }
00437   return CMD_ERROR;
00438 }
00439 
00448 CommandCost CmdBuildRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00449 {
00450   CommandCost cost(EXPENSES_CONSTRUCTION);
00451 
00452   RoadBits existing = ROAD_NONE;
00453   RoadBits other_bits = ROAD_NONE;
00454 
00455   /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
00456    * if a non-company is building the road */
00457   if ((IsValidCompanyID(_current_company) && p2 != 0) || (_current_company == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR;
00458   if (_current_company != OWNER_TOWN) {
00459     const Town *town = CalcClosestTownFromTile(tile);
00460     p2 = (town != NULL) ? town->index : (TownID)INVALID_TOWN;
00461   }
00462 
00463   RoadBits pieces = Extract<RoadBits, 0>(p1);
00464 
00465   /* do not allow building 'zero' road bits, code wouldn't handle it */
00466   if (pieces == ROAD_NONE) return CMD_ERROR;
00467 
00468   RoadType rt = (RoadType)GB(p1, 4, 2);
00469   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00470 
00471   DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2);
00472 
00473   Slope tileh = GetTileSlope(tile, NULL);
00474 
00475   switch (GetTileType(tile)) {
00476     case MP_ROAD:
00477       switch (GetRoadTileType(tile)) {
00478         case ROAD_TILE_NORMAL: {
00479           if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00480 
00481           other_bits = GetOtherRoadBits(tile, rt);
00482           if (!HasTileRoadType(tile, rt)) break;
00483 
00484           existing = GetRoadBits(tile, rt);
00485           bool crossing = !IsStraightRoad(existing | pieces);
00486           if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) {
00487             /* Junctions cannot be one-way */
00488             return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00489           }
00490           if ((existing & pieces) == pieces) {
00491             /* We only want to set the (dis)allowed road directions */
00492             if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && IsRoadOwner(tile, ROADTYPE_ROAD, _current_company)) {
00493               if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00494 
00495               if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00496 
00497               /* Ignore half built tiles */
00498               if (flags & DC_EXEC && rt != ROADTYPE_TRAM && IsStraightRoad(existing)) {
00499                 SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd);
00500                 MarkTileDirtyByTile(tile);
00501               }
00502               return CommandCost();
00503             }
00504             return_cmd_error(STR_1007_ALREADY_BUILT);
00505           }
00506         } break;
00507 
00508         case ROAD_TILE_CROSSING:
00509           other_bits = GetCrossingRoadBits(tile);
00510           if (pieces & ComplementRoadBits(other_bits)) goto do_clear;
00511           pieces = other_bits; // we need to pay for both roadbits
00512 
00513           if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00514           break;
00515 
00516         default:
00517         case ROAD_TILE_DEPOT:
00518           goto do_clear;
00519       }
00520       break;
00521 
00522     case MP_RAILWAY: {
00523       if (IsSteepSlope(tileh)) {
00524         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00525       }
00526 
00527       /* Level crossings may only be built on these slopes */
00528       if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) {
00529         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00530       }
00531 
00532       if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
00533 
00534       Axis roaddir;
00535       switch (GetTrackBits(tile)) {
00536         case TRACK_BIT_X:
00537           if (pieces & ROAD_X) goto do_clear;
00538           roaddir = AXIS_Y;
00539           break;
00540 
00541         case TRACK_BIT_Y:
00542           if (pieces & ROAD_Y) goto do_clear;
00543           roaddir = AXIS_X;
00544           break;
00545 
00546         default: goto do_clear;
00547       }
00548 
00549       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00550 
00551       if (flags & DC_EXEC) {
00552         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00553         /* Always add road to the roadtypes (can't draw without it) */
00554         bool reserved = HasBit(GetTrackReservation(tile), AxisToTrack(OtherAxis(roaddir)));
00555         MakeRoadCrossing(tile, _current_company, _current_company, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2);
00556         SetCrossingReservation(tile, reserved);
00557         UpdateLevelCrossing(tile, false);
00558         MarkTileDirtyByTile(tile);
00559       }
00560       return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));
00561     }
00562 
00563     case MP_STATION: {
00564       if (!IsDriveThroughStopTile(tile)) goto do_clear;
00565 
00566       RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));
00567       if (pieces & ~curbits) goto do_clear;
00568       pieces = curbits; // we need to pay for both roadbits
00569 
00570       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00571     } break;
00572 
00573     case MP_TUNNELBRIDGE:
00574       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00575       if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;
00576       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00577       /* Don't allow adding roadtype to the bridge/tunnel when vehicles are already driving on it */
00578       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00579       break;
00580 
00581     default: {
00582 do_clear:;
00583       CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00584       if (CmdFailed(ret)) return ret;
00585       cost.AddCost(ret);
00586     } break;
00587   }
00588 
00589   if (other_bits != pieces) {
00590     /* Check the foundation/slopes when adding road/tram bits */
00591     CommandCost ret = CheckRoadSlope(tileh, &pieces, existing, other_bits);
00592     /* Return an error if we need to build a foundation (ret != 0) but the
00593      * current setting is turned off */
00594     if (CmdFailed(ret) || (ret.GetCost() != 0 && !_settings_game.construction.build_on_slopes)) {
00595       return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00596     }
00597     cost.AddCost(ret);
00598   }
00599 
00600   if (IsTileType(tile, MP_ROAD)) {
00601     /* Don't put the pieces that already exist */
00602     pieces &= ComplementRoadBits(existing);
00603 
00604     /* Check if new road bits will have the same foundation as other existing road types */
00605     if (IsNormalRoad(tile)) {
00606       Slope slope = GetTileSlope(tile, NULL);
00607       Foundation found_new = GetRoadFoundation(slope, pieces | existing);
00608 
00609       /* Test if all other roadtypes can be built at that foundation */
00610       for (RoadType rtest = ROADTYPE_ROAD; rtest < ROADTYPE_END; rtest++) {
00611         if (rtest != rt) { // check only other road types
00612           RoadBits bits = GetRoadBits(tile, rtest);
00613           /* do not check if there are not road bits of given type */
00614           if (bits != ROAD_NONE && GetRoadFoundation(slope, bits) != found_new) {
00615             return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00616           }
00617         }
00618       }
00619     }
00620   }
00621 
00622   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00623 
00624   cost.AddCost(CountBits(pieces) * _price.build_road);
00625   if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00626     /* Pay for *every* tile of the bridge or tunnel */
00627     cost.MultiplyCost(GetTunnelBridgeLength(GetOtherTunnelBridgeEnd(tile), tile) + 2);
00628   }
00629 
00630   if (flags & DC_EXEC) {
00631     switch (GetTileType(tile)) {
00632       case MP_ROAD: {
00633         RoadTileType rtt = GetRoadTileType(tile);
00634         if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) {
00635           SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00636           SetRoadOwner(tile, rt, _current_company);
00637           if (rt == ROADTYPE_ROAD) SetTownIndex(tile, p2);
00638         }
00639         if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt);
00640       } break;
00641 
00642       case MP_TUNNELBRIDGE: {
00643         TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00644 
00645         SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt));
00646         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00647         SetRoadOwner(other_end, rt, _current_company);
00648         SetRoadOwner(tile, rt, _current_company);
00649 
00650         /* Mark tiles diry that have been repaved */
00651         MarkTileDirtyByTile(other_end);
00652         MarkTileDirtyByTile(tile);
00653         if (IsBridge(tile)) {
00654           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00655 
00656           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00657         }
00658       } break;
00659 
00660       case MP_STATION:
00661         assert(IsDriveThroughStopTile(tile));
00662         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00663         SetRoadOwner(tile, rt, _current_company);
00664         break;
00665 
00666       default:
00667         MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_company, _current_company);
00668         break;
00669     }
00670 
00671     if (rt != ROADTYPE_TRAM && IsNormalRoadTile(tile)) {
00672       existing |= pieces;
00673       SetDisallowedRoadDirections(tile, IsStraightRoad(existing) ?
00674           GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE);
00675     }
00676 
00677     MarkTileDirtyByTile(tile);
00678   }
00679   return cost;
00680 }
00681 
00693 CommandCost CmdBuildLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00694 {
00695   CommandCost cost(EXPENSES_CONSTRUCTION);
00696   bool had_bridge = false;
00697   bool had_tunnel = false;
00698   bool had_success = false;
00699   DisallowedRoadDirections drd = DRD_NORTHBOUND;
00700 
00701   _error_message = INVALID_STRING_ID;
00702 
00703   if (p1 >= MapSize()) return CMD_ERROR;
00704 
00705   TileIndex start_tile = p1;
00706   RoadType rt = (RoadType)GB(p2, 3, 2);
00707   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00708 
00709   /* Only drag in X or Y direction dictated by the direction variable */
00710   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00711   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00712 
00713   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00714   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00715     TileIndex t = start_tile;
00716     start_tile = end_tile;
00717     end_tile = t;
00718     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00719     drd = DRD_SOUTHBOUND;
00720   }
00721 
00722   /* On the X-axis, we have to swap the initial bits, so they
00723    * will be interpreted correctly in the GTTS. Futhermore
00724    * when you just 'click' on one tile to build them. */
00725   if (HasBit(p2, 2) == (start_tile == end_tile && HasBit(p2, 0) == HasBit(p2, 1))) drd ^= DRD_BOTH;
00726   /* No disallowed direction bits have to be toggled */
00727   if (!HasBit(p2, 5)) drd = DRD_NONE;
00728 
00729   TileIndex tile = start_tile;
00730   /* Start tile is the small number. */
00731   for (;;) {
00732     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00733 
00734     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00735     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00736 
00737     _error_message = INVALID_STRING_ID;
00738     CommandCost ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD);
00739     if (CmdFailed(ret)) {
00740       if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
00741     } else {
00742       had_success = true;
00743       /* Only pay for the upgrade on one side of the bridges and tunnels */
00744       if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00745         if (IsBridge(tile)) {
00746           if ((!had_bridge || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00747             cost.AddCost(ret);
00748           }
00749           had_bridge = true;
00750         } else { // IsTunnel(tile)
00751           if ((!had_tunnel || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00752             cost.AddCost(ret);
00753           }
00754           had_tunnel = true;
00755         }
00756       } else {
00757         cost.AddCost(ret);
00758       }
00759     }
00760 
00761     if (tile == end_tile) break;
00762 
00763     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00764   }
00765 
00766   return !had_success ? CMD_ERROR : cost;
00767 }
00768 
00779 CommandCost CmdRemoveLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00780 {
00781   CommandCost cost(EXPENSES_CONSTRUCTION);
00782 
00783   if (p1 >= MapSize()) return CMD_ERROR;
00784 
00785   TileIndex start_tile = p1;
00786   RoadType rt = (RoadType)GB(p2, 3, 2);
00787   if (!IsValidRoadType(rt)) return CMD_ERROR;
00788 
00789   /* Only drag in X or Y direction dictated by the direction variable */
00790   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00791   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00792 
00793   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00794   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00795     TileIndex t = start_tile;
00796     start_tile = end_tile;
00797     end_tile = t;
00798     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00799   }
00800 
00801   Money money = GetAvailableMoneyForCommand();
00802   TileIndex tile = start_tile;
00803   /* Start tile is the small number. */
00804   for (;;) {
00805     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00806 
00807     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00808     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00809 
00810     /* try to remove the halves. */
00811     if (bits != 0) {
00812       CommandCost ret = RemoveRoad(tile, flags & ~DC_EXEC, bits, rt, true);
00813       if (CmdSucceeded(ret)) {
00814         if (flags & DC_EXEC) {
00815           money -= ret.GetCost();
00816           if (money < 0) {
00817             _additional_cash_required = DoCommand(end_tile, start_tile, p2, flags & ~DC_EXEC, CMD_REMOVE_LONG_ROAD).GetCost();
00818             return cost;
00819           }
00820           RemoveRoad(tile, flags, bits, rt, true, false);
00821         }
00822         cost.AddCost(ret);
00823       }
00824     }
00825 
00826     if (tile == end_tile) break;
00827 
00828     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00829   }
00830 
00831   return (cost.GetCost() == 0) ? CMD_ERROR : cost;
00832 }
00833 
00844 CommandCost CmdBuildRoadDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00845 {
00846   DiagDirection dir = Extract<DiagDirection, 0>(p1);
00847   RoadType rt = (RoadType)GB(p1, 2, 2);
00848 
00849   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00850 
00851   Slope tileh = GetTileSlope(tile, NULL);
00852   if (tileh != SLOPE_FLAT && (
00853         !_settings_game.construction.build_on_slopes ||
00854         IsSteepSlope(tileh) ||
00855         !CanBuildDepotByTileh(dir, tileh)
00856       )) {
00857     return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
00858   }
00859 
00860   CommandCost cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00861   if (CmdFailed(cost)) return CMD_ERROR;
00862 
00863   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
00864 
00865   if (!Depot::CanAllocateItem()) return CMD_ERROR;
00866 
00867   if (flags & DC_EXEC) {
00868     Depot *dep = new Depot(tile);
00869     dep->town_index = ClosestTownFromTile(tile, UINT_MAX)->index;
00870 
00871     MakeRoadDepot(tile, _current_company, dir, rt, dep->town_index);
00872     MarkTileDirtyByTile(tile);
00873   }
00874   return cost.AddCost(_price.build_road_depot);
00875 }
00876 
00877 static CommandCost RemoveRoadDepot(TileIndex tile, DoCommandFlag flags)
00878 {
00879   if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
00880 
00881   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00882 
00883   if (flags & DC_EXEC) {
00884     DoClearSquare(tile);
00885     delete GetDepotByTile(tile);
00886   }
00887 
00888   return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road_depot);
00889 }
00890 
00891 static CommandCost ClearTile_Road(TileIndex tile, DoCommandFlag flags)
00892 {
00893   switch (GetRoadTileType(tile)) {
00894     case ROAD_TILE_NORMAL: {
00895       RoadBits b = GetAllRoadBits(tile);
00896 
00897       /* Clear the road if only one piece is on the tile OR we are not using the DC_AUTO flag */
00898       if ((CountBits(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) || !(flags & DC_AUTO)) {
00899         RoadTypes rts = GetRoadTypes(tile);
00900         CommandCost ret(EXPENSES_CONSTRUCTION);
00901         for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
00902           if (HasBit(rts, rt)) {
00903             CommandCost tmp_ret = RemoveRoad(tile, flags, GetRoadBits(tile, rt), rt, true);
00904             if (CmdFailed(tmp_ret)) return tmp_ret;
00905             ret.AddCost(tmp_ret);
00906           }
00907         }
00908         return ret;
00909       }
00910       return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00911     }
00912 
00913     case ROAD_TILE_CROSSING: {
00914       RoadTypes rts = GetRoadTypes(tile);
00915       CommandCost ret(EXPENSES_CONSTRUCTION);
00916 
00917       if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00918 
00919       /* Must iterate over the roadtypes in a reverse manner because
00920        * tram tracks must be removed before the road bits. */
00921       RoadType rt = ROADTYPE_TRAM;
00922       do {
00923         if (HasBit(rts, rt)) {
00924           CommandCost tmp_ret = RemoveRoad(tile, flags, GetCrossingRoadBits(tile), rt, false);
00925           if (CmdFailed(tmp_ret)) return tmp_ret;
00926           ret.AddCost(tmp_ret);
00927         }
00928       } while (rt-- != ROADTYPE_ROAD);
00929 
00930       if (flags & DC_EXEC) {
00931         DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00932       }
00933       return ret;
00934     }
00935 
00936     default:
00937     case ROAD_TILE_DEPOT:
00938       if (flags & DC_AUTO) {
00939         return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
00940       }
00941       return RemoveRoadDepot(tile, flags);
00942   }
00943 }
00944 
00945 
00946 struct DrawRoadTileStruct {
00947   uint16 image;
00948   byte subcoord_x;
00949   byte subcoord_y;
00950 };
00951 
00952 #include "table/road_land.h"
00953 
00961 Foundation GetRoadFoundation(Slope tileh, RoadBits bits)
00962 {
00963   /* Flat land and land without a road doesn't require a foundation */
00964   if (tileh == SLOPE_FLAT || bits == ROAD_NONE) return FOUNDATION_NONE;
00965 
00966   if (!IsSteepSlope(tileh)) {
00967     /* Leveled RoadBits on a slope */
00968     if ((_invalid_tileh_slopes_road[0][tileh] & bits) == ROAD_NONE) return FOUNDATION_LEVELED;
00969 
00970     /* Straight roads without foundation on a slope */
00971     if (!IsSlopeWithOneCornerRaised(tileh) &&
00972         (_invalid_tileh_slopes_road[1][tileh] & bits) == ROAD_NONE)
00973       return FOUNDATION_NONE;
00974   }
00975 
00976   /* Roads on steep Slopes or on Slopes with one corner raised */
00977   return (bits == ROAD_X ? FOUNDATION_INCLINED_X : FOUNDATION_INCLINED_Y);
00978 }
00979 
00980 const byte _road_sloped_sprites[14] = {
00981   0,  0,  2,  0,
00982   0,  1,  0,  0,
00983   3,  0,  0,  0,
00984   0,  0
00985 };
00986 
00997 static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside)
00998 {
00999   return (IsOnSnow(tile) &&
01000       !(_settings_game.game_creation.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) &&
01001         roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS));
01002 }
01003 
01009 void DrawTramCatenary(const TileInfo *ti, RoadBits tram)
01010 {
01011   /* Do not draw catenary if it is invisible */
01012   if (IsInvisibilitySet(TO_CATENARY)) return;
01013 
01014   /* Don't draw the catenary under a low bridge */
01015   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_CATENARY)) {
01016     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01017 
01018     if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
01019   }
01020 
01021   SpriteID front;
01022   SpriteID back;
01023 
01024   if (ti->tileh != SLOPE_FLAT) {
01025     back  = SPR_TRAMWAY_BACK_WIRES_SLOPED  + _road_sloped_sprites[ti->tileh - 1];
01026     front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1];
01027   } else {
01028     back  = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram];
01029     front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram];
01030   }
01031 
01032   AddSortableSpriteToDraw(back,  PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01033   AddSortableSpriteToDraw(front, PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01034 }
01035 
01044 static void DrawRoadDetail(SpriteID img, const TileInfo *ti, int dx, int dy, int h)
01045 {
01046   int x = ti->x | dx;
01047   int y = ti->y | dy;
01048   byte z = ti->z;
01049   if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
01050   AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z);
01051 }
01052 
01057 static void DrawRoadBits(TileInfo *ti)
01058 {
01059   RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD);
01060   RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM);
01061 
01062   SpriteID image = 0;
01063   SpriteID pal = PAL_NONE;
01064 
01065   if (ti->tileh != SLOPE_FLAT) {
01066     DrawFoundation(ti, GetRoadFoundation(ti->tileh, road | tram));
01067 
01068     /* DrawFoundation() modifies ti.
01069      * Default sloped sprites.. */
01070     if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
01071   }
01072 
01073   if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram];
01074 
01075   Roadside roadside = GetRoadside(ti->tile);
01076 
01077   if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01078     image += 19;
01079   } else {
01080     switch (roadside) {
01081       case ROADSIDE_BARREN:           pal = PALETTE_TO_BARE_LAND; break;
01082       case ROADSIDE_GRASS:            break;
01083       case ROADSIDE_GRASS_ROAD_WORKS: break;
01084       default:                        image -= 19; break; // Paved
01085     }
01086   }
01087 
01088   DrawGroundSprite(image, pal);
01089 
01090   /* For tram we overlay the road graphics with either tram tracks only
01091    * (when there is actual road beneath the trams) or with tram tracks
01092    * and some dirts which hides the road graphics */
01093   if (tram != ROAD_NONE) {
01094     if (ti->tileh != SLOPE_FLAT) {
01095       image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET;
01096     } else {
01097       image = _road_tile_sprites_1[tram] - SPR_ROAD_Y;
01098     }
01099     image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY;
01100     DrawGroundSprite(image, pal);
01101   }
01102 
01103   if (road != ROAD_NONE) {
01104     DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile);
01105     if (drd != DRD_NONE) {
01106       DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0);
01107     }
01108   }
01109 
01110   if (HasRoadWorks(ti->tile)) {
01111     /* Road works */
01112     DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE);
01113     return;
01114   }
01115 
01116   if (tram != ROAD_NONE) DrawTramCatenary(ti, tram);
01117 
01118   /* Return if full detail is disabled, or we are zoomed fully out. */
01119   if (!HasBit(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
01120 
01121   /* Do not draw details (street lights, trees) under low bridge */
01122   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && (roadside == ROADSIDE_TREES || roadside == ROADSIDE_STREET_LIGHTS)) {
01123     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01124     uint minz = GetTileMaxZ(ti->tile) + 2 * TILE_HEIGHT;
01125 
01126     if (roadside == ROADSIDE_TREES) minz += TILE_HEIGHT;
01127 
01128     if (height < minz) return;
01129   }
01130 
01131   /* If there are no road bits, return, as there is nothing left to do */
01132   if (CountBits(road) < 2) return;
01133 
01134   /* Draw extra details. */
01135   for (const DrawRoadTileStruct *drts = _road_display_table[roadside][road | tram]; drts->image != 0; drts++) {
01136     DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10);
01137   }
01138 }
01139 
01141 static void DrawTile_Road(TileInfo *ti)
01142 {
01143   switch (GetRoadTileType(ti->tile)) {
01144     case ROAD_TILE_NORMAL:
01145       DrawRoadBits(ti);
01146       break;
01147 
01148     case ROAD_TILE_CROSSING: {
01149       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01150 
01151       SpriteID image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing;
01152       SpriteID pal = PAL_NONE;
01153 
01154       if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
01155       if (IsCrossingBarred(ti->tile)) image += 2;
01156 
01157       Roadside roadside = GetRoadside(ti->tile);
01158 
01159       if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01160         image += 8;
01161       } else {
01162         switch (roadside) {
01163           case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break;
01164           case ROADSIDE_GRASS:  break;
01165           default:              image += 4; break; // Paved
01166         }
01167       }
01168 
01169       DrawGroundSprite(image, pal);
01170 
01171       /* PBS debugging, draw reserved tracks darker */
01172       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && GetCrossingReservation(ti->tile)) {
01173         DrawGroundSprite(GetCrossingRoadAxis(ti->tile) == AXIS_Y ? GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_y : GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_x, PALETTE_CRASH);
01174       }
01175 
01176       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01177         DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal);
01178         DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile));
01179       }
01180       if (HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
01181       break;
01182     }
01183 
01184     default:
01185     case ROAD_TILE_DEPOT: {
01186       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01187 
01188       SpriteID palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
01189 
01190       const DrawTileSprites *dts;
01191       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01192         dts =  &_tram_depot[GetRoadDepotDirection(ti->tile)];
01193       } else {
01194         dts =  &_road_depot[GetRoadDepotDirection(ti->tile)];
01195       }
01196 
01197       DrawGroundSprite(dts->ground.sprite, PAL_NONE);
01198 
01199       /* End now if buildings are invisible */
01200       if (IsInvisibilitySet(TO_BUILDINGS)) break;
01201 
01202       for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01203         SpriteID image = dtss->image.sprite;
01204         SpriteID pal;
01205 
01206         if (!IsTransparencySet(TO_BUILDINGS) && HasBit(image, PALETTE_MODIFIER_COLOUR)) {
01207           pal = palette;
01208         } else {
01209           pal = PAL_NONE;
01210         }
01211 
01212         AddSortableSpriteToDraw(
01213           image, pal,
01214           ti->x + dtss->delta_x, ti->y + dtss->delta_y,
01215           dtss->size_x, dtss->size_y,
01216           dtss->size_z, ti->z,
01217           IsTransparencySet(TO_BUILDINGS)
01218         );
01219       }
01220       break;
01221     }
01222   }
01223   DrawBridgeMiddle(ti);
01224 }
01225 
01226 void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt)
01227 {
01228   SpriteID palette = COMPANY_SPRITE_COLOUR(_local_company);
01229   const DrawTileSprites *dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir];
01230 
01231   x += 33;
01232   y += 17;
01233 
01234   DrawSprite(dts->ground.sprite, PAL_NONE, x, y);
01235 
01236   for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01237     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
01238     SpriteID image = dtss->image.sprite;
01239 
01240     DrawSprite(image, HasBit(image, PALETTE_MODIFIER_COLOUR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
01241   }
01242 }
01243 
01248 void UpdateNearestTownForRoadTiles(bool invalidate)
01249 {
01250   assert(!invalidate || _generating_world);
01251 
01252   for (TileIndex t = 0; t < MapSize(); t++) {
01253     if (IsTileType(t, MP_ROAD) && !HasTownOwnedRoad(t)) {
01254       TownID tid = (TownID)INVALID_TOWN;
01255       if (!invalidate) {
01256         const Town *town = CalcClosestTownFromTile(t);
01257         if (town != NULL) tid = town->index;
01258       }
01259       SetTownIndex(t, tid);
01260     }
01261   }
01262 }
01263 
01264 static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
01265 {
01266   uint z;
01267   Slope tileh = GetTileSlope(tile, &z);
01268 
01269   if (tileh == SLOPE_FLAT) return z;
01270   if (IsNormalRoad(tile)) {
01271     Foundation f = GetRoadFoundation(tileh, GetAllRoadBits(tile));
01272     z += ApplyFoundationToSlope(f, &tileh);
01273     return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
01274   } else {
01275     return z + TILE_HEIGHT;
01276   }
01277 }
01278 
01279 static Foundation GetFoundation_Road(TileIndex tile, Slope tileh)
01280 {
01281   if (IsNormalRoad(tile)) {
01282     return GetRoadFoundation(tileh, GetAllRoadBits(tile));
01283   } else {
01284     return FlatteningFoundation(tileh);
01285   }
01286 }
01287 
01288 static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
01289 {
01290   /* not used */
01291 }
01292 
01293 static void AnimateTile_Road(TileIndex tile)
01294 {
01295   if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
01296 }
01297 
01298 
01299 static const Roadside _town_road_types[][2] = {
01300   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01301   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01302   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01303   { ROADSIDE_TREES,         ROADSIDE_TREES },
01304   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01305 };
01306 
01307 static const Roadside _town_road_types_2[][2] = {
01308   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01309   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01310   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01311   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01312   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01313 };
01314 
01315 
01316 static void TileLoop_Road(TileIndex tile)
01317 {
01318   switch (_settings_game.game_creation.landscape) {
01319     case LT_ARCTIC:
01320       if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) {
01321         ToggleSnow(tile);
01322         MarkTileDirtyByTile(tile);
01323       }
01324       break;
01325 
01326     case LT_TROPIC:
01327       if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
01328         ToggleDesert(tile);
01329         MarkTileDirtyByTile(tile);
01330       }
01331       break;
01332   }
01333 
01334   if (IsRoadDepot(tile)) return;
01335 
01336   const Town *t = ClosestTownFromTile(tile, UINT_MAX);
01337   if (!HasRoadWorks(tile)) {
01338     HouseZonesBits grp = HZB_TOWN_EDGE;
01339 
01340     if (t != NULL) {
01341       grp = GetTownRadiusGroup(t, tile);
01342 
01343       /* Show an animation to indicate road work */
01344       if (t->road_build_months != 0 &&
01345           (DistanceManhattan(t->xy, tile) < 8 || grp != HZB_TOWN_EDGE) &&
01346           IsNormalRoad(tile) && CountBits(GetAllRoadBits(tile)) > 1 ) {
01347         if (GetFoundationSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && Chance16(1, 40)) {
01348           StartRoadWorks(tile);
01349 
01350           SndPlayTileFx(SND_21_JACKHAMMER, tile);
01351           CreateEffectVehicleAbove(
01352             TileX(tile) * TILE_SIZE + 7,
01353             TileY(tile) * TILE_SIZE + 7,
01354             0,
01355             EV_BULLDOZER);
01356           MarkTileDirtyByTile(tile);
01357           return;
01358         }
01359       }
01360     }
01361 
01362     {
01363       /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
01364       const Roadside *new_rs = (_settings_game.game_creation.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp];
01365       Roadside cur_rs = GetRoadside(tile);
01366 
01367       /* We have our desired type, do nothing */
01368       if (cur_rs == new_rs[0]) return;
01369 
01370       /* We have the pre-type of the desired type, switch to the desired type */
01371       if (cur_rs == new_rs[1]) {
01372         cur_rs = new_rs[0];
01373       /* We have barren land, install the pre-type */
01374       } else if (cur_rs == ROADSIDE_BARREN) {
01375         cur_rs = new_rs[1];
01376       /* We're totally off limits, remove any installation and make barren land */
01377       } else {
01378         cur_rs = ROADSIDE_BARREN;
01379       }
01380       SetRoadside(tile, cur_rs);
01381       MarkTileDirtyByTile(tile);
01382     }
01383   } else if (IncreaseRoadWorksCounter(tile)) {
01384     TerminateRoadWorks(tile);
01385 
01386     if (_settings_game.economy.mod_road_rebuild) {
01387       /* Generate a nicer town surface */
01388       const RoadBits old_rb = GetAnyRoadBits(tile, ROADTYPE_ROAD);
01389       const RoadBits new_rb = CleanUpRoadBits(tile, old_rb);
01390 
01391       if (old_rb != new_rb) {
01392         RemoveRoad(tile, DC_EXEC | DC_AUTO | DC_NO_WATER, (old_rb ^ new_rb), ROADTYPE_ROAD, true);
01393       }
01394     }
01395 
01396     MarkTileDirtyByTile(tile);
01397   }
01398 }
01399 
01400 static bool ClickTile_Road(TileIndex tile)
01401 {
01402   if (!IsRoadDepot(tile)) return false;
01403 
01404   ShowDepotWindow(tile, VEH_ROAD);
01405   return true;
01406 }
01407 
01408 /* Converts RoadBits to TrackBits */
01409 static const byte _road_trackbits[16] = {
01410   0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
01411 };
01412 
01413 static TrackStatus GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01414 {
01415   TrackdirBits trackdirbits = TRACKDIR_BIT_NONE;
01416   TrackdirBits red_signals = TRACKDIR_BIT_NONE; // crossing barred
01417   switch (mode) {
01418     case TRANSPORT_RAIL:
01419       if (IsLevelCrossing(tile)) trackdirbits = TrackBitsToTrackdirBits(GetCrossingRailBits(tile));
01420       break;
01421 
01422     case TRANSPORT_ROAD:
01423       if ((GetRoadTypes(tile) & sub_mode) == 0) break;
01424       switch (GetRoadTileType(tile)) {
01425         case ROAD_TILE_NORMAL: {
01426           const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 };
01427           RoadType rt = (RoadType)FindFirstBit(sub_mode);
01428           RoadBits bits = GetRoadBits(tile, rt);
01429 
01430           /* no roadbit at this side of tile, return 0 */
01431           if (side != INVALID_DIAGDIR && (DiagDirToRoadBits(side) & bits) == 0) break;
01432 
01433           uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)];
01434           if (!HasRoadWorks(tile)) trackdirbits = (TrackdirBits)(_road_trackbits[bits] * multiplier);
01435           break;
01436         }
01437 
01438         case ROAD_TILE_CROSSING: {
01439           Axis axis = GetCrossingRoadAxis(tile);
01440 
01441           if (side != INVALID_DIAGDIR && axis != DiagDirToAxis(side)) break;
01442 
01443           trackdirbits = TrackBitsToTrackdirBits(AxisToTrackBits(axis));
01444           if (IsCrossingBarred(tile)) red_signals = trackdirbits;
01445           break;
01446         }
01447 
01448         default:
01449         case ROAD_TILE_DEPOT: {
01450           DiagDirection dir = GetRoadDepotDirection(tile);
01451 
01452           if (side != INVALID_DIAGDIR && side != dir) break;
01453 
01454           trackdirbits = TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir));
01455           break;
01456         }
01457       }
01458       break;
01459 
01460     default: break;
01461   }
01462   return CombineTrackStatus(trackdirbits, red_signals);
01463 }
01464 
01465 static const StringID _road_tile_strings[] = {
01466   STR_1814_ROAD,
01467   STR_1814_ROAD,
01468   STR_1814_ROAD,
01469   STR_1815_ROAD_WITH_STREETLIGHTS,
01470   STR_1814_ROAD,
01471   STR_1816_TREE_LINED_ROAD,
01472   STR_1814_ROAD,
01473   STR_1814_ROAD,
01474 };
01475 
01476 static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
01477 {
01478   Owner rail_owner = INVALID_OWNER;
01479   Owner road_owner = INVALID_OWNER;
01480   Owner tram_owner = INVALID_OWNER;
01481 
01482   switch (GetRoadTileType(tile)) {
01483     case ROAD_TILE_CROSSING: {
01484       td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING;
01485       RoadTypes rts = GetRoadTypes(tile);
01486       rail_owner = GetTileOwner(tile);
01487       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01488       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01489       break;
01490     }
01491 
01492     case ROAD_TILE_DEPOT:
01493       td->str = STR_1817_ROAD_VEHICLE_DEPOT;
01494       road_owner = GetTileOwner(tile); // Tile has only one owner, roadtype does not matter
01495       break;
01496 
01497     default: {
01498       RoadTypes rts = GetRoadTypes(tile);
01499       td->str = (HasBit(rts, ROADTYPE_ROAD) ? _road_tile_strings[GetRoadside(tile)] : STR_TRAMWAY);
01500       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01501       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01502       break;
01503     }
01504   }
01505 
01506   /* Now we have to discover, if the tile has only one owner or many:
01507    *   - Find a first_owner of the tile. (Currently road or tram must be present, but this will break when the third type becomes available)
01508    *   - Compare the found owner with the other owners, and test if they differ.
01509    * Note: If road exists it will be the first_owner.
01510    */
01511   Owner first_owner = (road_owner == INVALID_OWNER ? tram_owner : road_owner);
01512   bool mixed_owners = (tram_owner != INVALID_OWNER && tram_owner != first_owner) || (rail_owner != INVALID_OWNER && rail_owner != first_owner);
01513 
01514   if (mixed_owners) {
01515     /* Multiple owners */
01516     td->owner_type[0] = (rail_owner == INVALID_OWNER ? STR_NULL : STR_RAIL_OWNER);
01517     td->owner[0] = rail_owner;
01518     td->owner_type[1] = (road_owner == INVALID_OWNER ? STR_NULL : STR_ROAD_OWNER);
01519     td->owner[1] = road_owner;
01520     td->owner_type[2] = (tram_owner == INVALID_OWNER ? STR_NULL : STR_TRAM_OWNER);
01521     td->owner[2] = tram_owner;
01522   } else {
01523     /* One to rule them all */
01524     td->owner[0] = first_owner;
01525   }
01526 }
01527 
01532 static const byte _roadveh_enter_depot_dir[4] = {
01533   TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
01534 };
01535 
01536 static VehicleEnterTileStatus VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
01537 {
01538   switch (GetRoadTileType(tile)) {
01539     case ROAD_TILE_CROSSING:
01540       if (v->type == VEH_TRAIN) {
01541         /* it should be barred */
01542         assert(IsCrossingBarred(tile));
01543       }
01544       break;
01545 
01546     case ROAD_TILE_DEPOT:
01547       if (v->type == VEH_ROAD &&
01548           v->u.road.frame == RVC_DEPOT_STOP_FRAME &&
01549           _roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) {
01550         v->u.road.state = RVSB_IN_DEPOT;
01551         v->vehstatus |= VS_HIDDEN;
01552         v->direction = ReverseDir(v->direction);
01553         if (v->Next() == NULL) VehicleEnterDepot(v);
01554         v->tile = tile;
01555 
01556         InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01557         return VETSB_ENTERED_WORMHOLE;
01558       }
01559       break;
01560 
01561     default: break;
01562   }
01563   return VETSB_CONTINUE;
01564 }
01565 
01566 
01567 static void ChangeTileOwner_Road(TileIndex tile, Owner old_owner, Owner new_owner)
01568 {
01569   if (IsRoadDepot(tile)) {
01570     if (GetTileOwner(tile) == old_owner) {
01571       if (new_owner == INVALID_OWNER) {
01572         DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01573       } else {
01574         SetTileOwner(tile, new_owner);
01575       }
01576     }
01577     return;
01578   }
01579 
01580   for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01581     /* Update all roadtypes, no matter if they are present */
01582     if (GetRoadOwner(tile, rt) == old_owner) {
01583       SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01584     }
01585   }
01586 
01587   if (IsLevelCrossing(tile)) {
01588     if (GetTileOwner(tile) == old_owner) {
01589       if (new_owner == INVALID_OWNER) {
01590         DoCommand(tile, 0, GetCrossingRailTrack(tile), DC_EXEC | DC_BANKRUPT, CMD_REMOVE_SINGLE_RAIL);
01591       } else {
01592         SetTileOwner(tile, new_owner);
01593       }
01594     }
01595   }
01596 }
01597 
01598 static CommandCost TerraformTile_Road(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
01599 {
01600   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
01601     switch (GetRoadTileType(tile)) {
01602       case ROAD_TILE_CROSSING:
01603         if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) && HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01604         break;
01605 
01606       case ROAD_TILE_DEPOT:
01607         if (AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRoadDepotDirection(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01608         break;
01609 
01610       case ROAD_TILE_NORMAL: {
01611         RoadBits bits = GetAllRoadBits(tile);
01612         RoadBits bits_copy = bits;
01613         /* Check if the slope-road_bits combination is valid at all, i.e. it is safe to call GetRoadFoundation(). */
01614         if (!CmdFailed(CheckRoadSlope(tileh_new, &bits_copy, ROAD_NONE, ROAD_NONE))) {
01615           /* CheckRoadSlope() sometimes changes the road_bits, if it does not agree with them. */
01616           if (bits == bits_copy) {
01617             uint z_old;
01618             Slope tileh_old = GetTileSlope(tile, &z_old);
01619 
01620             /* Get the slope on top of the foundation */
01621             z_old += ApplyFoundationToSlope(GetRoadFoundation(tileh_old, bits), &tileh_old);
01622             z_new += ApplyFoundationToSlope(GetRoadFoundation(tileh_new, bits), &tileh_new);
01623 
01624             /* The surface slope must not be changed */
01625             if ((z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01626           }
01627         }
01628         break;
01629       }
01630 
01631       default: NOT_REACHED();
01632     }
01633   }
01634 
01635   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01636 }
01637 
01639 extern const TileTypeProcs _tile_type_road_procs = {
01640   DrawTile_Road,           // draw_tile_proc
01641   GetSlopeZ_Road,          // get_slope_z_proc
01642   ClearTile_Road,          // clear_tile_proc
01643   GetAcceptedCargo_Road,   // get_accepted_cargo_proc
01644   GetTileDesc_Road,        // get_tile_desc_proc
01645   GetTileTrackStatus_Road, // get_tile_track_status_proc
01646   ClickTile_Road,          // click_tile_proc
01647   AnimateTile_Road,        // animate_tile_proc
01648   TileLoop_Road,           // tile_loop_clear
01649   ChangeTileOwner_Road,    // change_tile_owner_clear
01650   NULL,                    // get_produced_cargo_proc
01651   VehicleEnter_Road,       // vehicle_enter_tile_proc
01652   GetFoundation_Road,      // get_foundation_proc
01653   TerraformTile_Road,      // terraform_tile_proc
01654 };

Generated on Sun Mar 15 22:49:49 2009 for openttd by  doxygen 1.5.6