road_cmd.cpp

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00001 /* $Id: road_cmd.cpp 15642 2009-03-08 01:20:11Z 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 "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   switch (GetTileType(tile)) {
00180     case MP_ROAD:
00181       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00182       break;
00183 
00184     case MP_STATION:
00185       if (!IsDriveThroughStopTile(tile)) return CMD_ERROR;
00186       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00187       break;
00188 
00189     case MP_TUNNELBRIDGE:
00190       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00191       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00192       break;
00193 
00194     default:
00195       return CMD_ERROR;
00196   }
00197 
00198   if (!CheckAllowRemoveRoad(tile, pieces, GetRoadOwner(tile, rt), rt, flags, town_check)) return CMD_ERROR;
00199 
00200   if (!IsTileType(tile, MP_ROAD)) {
00201     /* If it's the last roadtype, just clear the whole tile */
00202     if (rts == RoadTypeToRoadTypes(rt)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00203 
00204     CommandCost cost(EXPENSES_CONSTRUCTION);
00205     if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00206       TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00207       /* Pay for *every* tile of the bridge or tunnel */
00208       cost.AddCost((GetTunnelBridgeLength(other_end, tile) + 2) * _price.remove_road);
00209       if (flags & DC_EXEC) {
00210         SetRoadTypes(other_end, GetRoadTypes(other_end) & ~RoadTypeToRoadTypes(rt));
00211         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00212 
00213         /* If the owner of the bridge sells all it's road, also move the ownership
00214          * to the owner of the other roadtype. */
00215         RoadType other_rt = (rt == ROADTYPE_ROAD) ? ROADTYPE_TRAM : ROADTYPE_ROAD;
00216         Owner other_owner = GetRoadOwner(tile, other_rt);
00217         if (other_owner != GetTileOwner(tile)) {
00218           SetTileOwner(tile, other_owner);
00219           SetTileOwner(other_end, other_owner);
00220         }
00221 
00222         /* Mark tiles diry that have been repaved */
00223         MarkTileDirtyByTile(tile);
00224         MarkTileDirtyByTile(other_end);
00225         if (IsBridge(tile)) {
00226           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00227 
00228           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00229         }
00230       }
00231     } else {
00232       assert(IsDriveThroughStopTile(tile));
00233       cost.AddCost(_price.remove_road * 2);
00234       if (flags & DC_EXEC) {
00235         SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt));
00236         MarkTileDirtyByTile(tile);
00237       }
00238     }
00239     return cost;
00240   }
00241 
00242   switch (GetRoadTileType(tile)) {
00243     case ROAD_TILE_NORMAL: {
00244       const Slope tileh = GetTileSlope(tile, NULL);
00245       RoadBits present = GetRoadBits(tile, rt);
00246       const RoadBits other = GetOtherRoadBits(tile, rt);
00247       const Foundation f = GetRoadFoundation(tileh, present);
00248 
00249       if (HasRoadWorks(tile) && _current_company != OWNER_WATER) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00250 
00251       /* Autocomplete to a straight road
00252        * @li on steep slopes
00253        * @li if the bits of the other roadtypes result in another foundation
00254        * @li if build on slopes is disabled */
00255       if (IsSteepSlope(tileh) || (IsStraightRoad(other) &&
00256           (other & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) != ROAD_NONE) ||
00257           (tileh != SLOPE_FLAT && !_settings_game.construction.build_on_slopes)) {
00258         pieces |= MirrorRoadBits(pieces);
00259       }
00260 
00261       /* limit the bits to delete to the existing bits. */
00262       pieces &= present;
00263       if (pieces == ROAD_NONE) return CMD_ERROR;
00264 
00265       /* Now set present what it will be after the remove */
00266       present ^= pieces;
00267 
00268       /* Check for invalid RoadBit combinations on slopes */
00269       if (tileh != SLOPE_FLAT && present != ROAD_NONE &&
00270           (present & _invalid_tileh_slopes_road[0][tileh & SLOPE_ELEVATED]) == present) {
00271         return CMD_ERROR;
00272       }
00273 
00274       if (flags & DC_EXEC) {
00275         if (HasRoadWorks(tile)) {
00276           /* flooding tile with road works, don't forget to remove the effect vehicle too */
00277           assert(_current_company == OWNER_WATER);
00278           Vehicle *v;
00279           FOR_ALL_VEHICLES(v) {
00280             if (v->type == VEH_EFFECT && TileVirtXY(v->x_pos, v->y_pos) == tile) {
00281               delete v;
00282             }
00283           }
00284         }
00285         if (present == ROAD_NONE) {
00286           RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00287           if (rts == ROADTYPES_NONE) {
00288             /* Includes MarkTileDirtyByTile() */
00289             DoClearSquare(tile);
00290           } else {
00291             if (rt == ROADTYPE_ROAD && IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN)) {
00292               /* Update nearest-town index */
00293               const Town *town = CalcClosestTownFromTile(tile);
00294               SetTownIndex(tile, town == NULL ? (TownID)INVALID_TOWN : town->index);
00295             }
00296             SetRoadBits(tile, ROAD_NONE, rt);
00297             SetRoadTypes(tile, rts);
00298             MarkTileDirtyByTile(tile);
00299           }
00300         } else {
00301           /* When bits are removed, you *always* end up with something that
00302            * is not a complete straight road tile. However, trams do not have
00303            * onewayness, so they cannot remove it either. */
00304           if (rt != ROADTYPE_TRAM) SetDisallowedRoadDirections(tile, DRD_NONE);
00305           SetRoadBits(tile, present, rt);
00306           MarkTileDirtyByTile(tile);
00307         }
00308       }
00309 
00310       /* If we change the foundation we have to pay for it. */
00311       return CommandCost(EXPENSES_CONSTRUCTION, CountBits(pieces) * _price.remove_road +
00312           ((GetRoadFoundation(tileh, present) != f) ? _price.terraform : (Money)0));
00313     }
00314 
00315     case ROAD_TILE_CROSSING: {
00316       if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) {
00317         return CMD_ERROR;
00318       }
00319 
00320       /* Don't allow road to be removed from the crossing when there is tram;
00321        * we can't draw the crossing without roadbits ;) */
00322       if (rt == ROADTYPE_ROAD && HasTileRoadType(tile, ROADTYPE_TRAM) && (flags & DC_EXEC || crossing_check)) return CMD_ERROR;
00323 
00324       if (flags & DC_EXEC) {
00325         RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt));
00326         if (rts == ROADTYPES_NONE) {
00327           TrackBits tracks = GetCrossingRailBits(tile);
00328           bool reserved = GetCrossingReservation(tile);
00329           MakeRailNormal(tile, GetTileOwner(tile), tracks, GetRailType(tile));
00330           if (reserved) SetTrackReservation(tile, tracks);
00331         } else {
00332           SetRoadTypes(tile, rts);
00333           /* If we ever get HWAY and it is possible without road then we will need to promote ownership and invalidate town index here, too */
00334         }
00335         MarkTileDirtyByTile(tile);
00336         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00337       }
00338       return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road * 2);
00339     }
00340 
00341     default:
00342     case ROAD_TILE_DEPOT:
00343       return CMD_ERROR;
00344   }
00345 }
00346 
00347 
00355 CommandCost CmdRemoveRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00356 {
00357   RoadType rt = (RoadType)GB(p1, 4, 2);
00358   if (!IsValidRoadType(rt)) return CMD_ERROR;
00359 
00360   RoadBits pieces = Extract<RoadBits, 0>(p1);
00361 
00362   return RemoveRoad(tile, flags, pieces, rt, true);
00363 }
00364 
00376 static CommandCost CheckRoadSlope(Slope tileh, RoadBits *pieces, RoadBits existing, RoadBits other)
00377 {
00378   /* Remove already build pieces */
00379   CLRBITS(*pieces, existing);
00380 
00381   /* If we can't build anything stop here */
00382   if (*pieces == ROAD_NONE) return CMD_ERROR;
00383 
00384   /* All RoadBit combos are valid on flat land */
00385   if (tileh == SLOPE_FLAT) return CommandCost();
00386 
00387   /* Proceed steep Slopes first to reduce lookup table size */
00388   if (IsSteepSlope(tileh)) {
00389     /* Force straight roads. */
00390     *pieces |= MirrorRoadBits(*pieces);
00391 
00392     /* Use existing as all existing since only straight
00393      * roads are allowed here. */
00394     existing |= other;
00395 
00396     if ((existing == ROAD_NONE || existing == *pieces) && IsStraightRoad(*pieces)) {
00397       return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00398     }
00399     return CMD_ERROR;
00400   }
00401 
00402   /* Save the merge of all bits of the current type */
00403   RoadBits type_bits = existing | *pieces;
00404 
00405   /* Roads on slopes */
00406   if (_settings_game.construction.build_on_slopes && (_invalid_tileh_slopes_road[0][tileh] & (other | type_bits)) == ROAD_NONE) {
00407 
00408     /* If we add leveling we've got to pay for it */
00409     if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00410 
00411     return CommandCost();
00412   }
00413 
00414   /* Autocomplete uphill roads */
00415   *pieces |= MirrorRoadBits(*pieces);
00416   type_bits = existing | *pieces;
00417 
00418   /* Uphill roads */
00419   if (IsStraightRoad(type_bits) && (other == type_bits || other == ROAD_NONE) &&
00420       (_invalid_tileh_slopes_road[1][tileh] & (other | type_bits)) == ROAD_NONE) {
00421 
00422     /* Slopes with foundation ? */
00423     if (IsSlopeWithOneCornerRaised(tileh)) {
00424 
00425       /* Prevent build on slopes if it isn't allowed */
00426       if (_settings_game.construction.build_on_slopes) {
00427 
00428         /* If we add foundation we've got to pay for it */
00429         if ((other | existing) == ROAD_NONE) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00430 
00431         return CommandCost();
00432       }
00433     } else {
00434       if (CountBits(existing) == 1) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
00435       return CommandCost();
00436     }
00437   }
00438   return CMD_ERROR;
00439 }
00440 
00449 CommandCost CmdBuildRoad(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00450 {
00451   CommandCost cost(EXPENSES_CONSTRUCTION);
00452 
00453   RoadBits existing = ROAD_NONE;
00454   RoadBits other_bits = ROAD_NONE;
00455 
00456   /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero
00457    * if a non-company is building the road */
00458   if ((IsValidCompanyID(_current_company) && p2 != 0) || (_current_company == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR;
00459   if (_current_company != OWNER_TOWN) {
00460     const Town *town = CalcClosestTownFromTile(tile);
00461     p2 = (town != NULL) ? town->index : (TownID)INVALID_TOWN;
00462   }
00463 
00464   RoadBits pieces = Extract<RoadBits, 0>(p1);
00465 
00466   /* do not allow building 'zero' road bits, code wouldn't handle it */
00467   if (pieces == ROAD_NONE) return CMD_ERROR;
00468 
00469   RoadType rt = (RoadType)GB(p1, 4, 2);
00470   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00471 
00472   DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2);
00473 
00474   Slope tileh = GetTileSlope(tile, NULL);
00475 
00476   switch (GetTileType(tile)) {
00477     case MP_ROAD:
00478       switch (GetRoadTileType(tile)) {
00479         case ROAD_TILE_NORMAL: {
00480           if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS);
00481 
00482           other_bits = GetOtherRoadBits(tile, rt);
00483           if (!HasTileRoadType(tile, rt)) break;
00484 
00485           existing = GetRoadBits(tile, rt);
00486           bool crossing = !IsStraightRoad(existing | pieces);
00487           if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) {
00488             /* Junctions cannot be one-way */
00489             return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00490           }
00491           if ((existing & pieces) == pieces) {
00492             /* We only want to set the (dis)allowed road directions */
00493             if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && IsRoadOwner(tile, ROADTYPE_ROAD, _current_company)) {
00494               if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION);
00495 
00496               if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00497 
00498               /* Ignore half built tiles */
00499               if (flags & DC_EXEC && rt != ROADTYPE_TRAM && IsStraightRoad(existing)) {
00500                 SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd);
00501                 MarkTileDirtyByTile(tile);
00502               }
00503               return CommandCost();
00504             }
00505             return_cmd_error(STR_1007_ALREADY_BUILT);
00506           }
00507         } break;
00508 
00509         case ROAD_TILE_CROSSING:
00510           other_bits = GetCrossingRoadBits(tile);
00511           if (pieces & ComplementRoadBits(other_bits)) goto do_clear;
00512           pieces = other_bits; // we need to pay for both roadbits
00513 
00514           if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00515           break;
00516 
00517         default:
00518         case ROAD_TILE_DEPOT:
00519           goto do_clear;
00520       }
00521       break;
00522 
00523     case MP_RAILWAY: {
00524       if (IsSteepSlope(tileh)) {
00525         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00526       }
00527 
00528       /* Level crossings may only be built on these slopes */
00529       if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) {
00530         return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00531       }
00532 
00533       if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear;
00534 
00535       Axis roaddir;
00536       switch (GetTrackBits(tile)) {
00537         case TRACK_BIT_X:
00538           if (pieces & ROAD_X) goto do_clear;
00539           roaddir = AXIS_Y;
00540           break;
00541 
00542         case TRACK_BIT_Y:
00543           if (pieces & ROAD_Y) goto do_clear;
00544           roaddir = AXIS_X;
00545           break;
00546 
00547         default: goto do_clear;
00548       }
00549 
00550       if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00551 
00552       if (flags & DC_EXEC) {
00553         YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile)));
00554         /* Always add road to the roadtypes (can't draw without it) */
00555         bool reserved = HasBit(GetTrackReservation(tile), AxisToTrack(OtherAxis(roaddir)));
00556         MakeRoadCrossing(tile, _current_company, _current_company, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2);
00557         SetCrossingReservation(tile, reserved);
00558         UpdateLevelCrossing(tile, false);
00559         MarkTileDirtyByTile(tile);
00560       }
00561       return CommandCost(EXPENSES_CONSTRUCTION, _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4));
00562     }
00563 
00564     case MP_STATION: {
00565       if (!IsDriveThroughStopTile(tile)) goto do_clear;
00566 
00567       RoadBits curbits = AxisToRoadBits(DiagDirToAxis(GetRoadStopDir(tile)));
00568       if (pieces & ~curbits) goto do_clear;
00569       pieces = curbits; // we need to pay for both roadbits
00570 
00571       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00572     } break;
00573 
00574     case MP_TUNNELBRIDGE:
00575       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return CMD_ERROR;
00576       if (MirrorRoadBits(DiagDirToRoadBits(GetTunnelBridgeDirection(tile))) != pieces) return CMD_ERROR;
00577       if (HasTileRoadType(tile, rt)) return_cmd_error(STR_1007_ALREADY_BUILT);
00578       /* Don't allow adding roadtype to the bridge/tunnel when vehicles are already driving on it */
00579       if (HasVehicleOnTunnelBridge(tile, GetOtherTunnelBridgeEnd(tile))) return CMD_ERROR;
00580       break;
00581 
00582     default: {
00583 do_clear:;
00584       CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00585       if (CmdFailed(ret)) return ret;
00586       cost.AddCost(ret);
00587     } break;
00588   }
00589 
00590   if (other_bits != pieces) {
00591     /* Check the foundation/slopes when adding road/tram bits */
00592     CommandCost ret = CheckRoadSlope(tileh, &pieces, existing, other_bits);
00593     /* Return an error if we need to build a foundation (ret != 0) but the
00594      * current setting is turned off */
00595     if (CmdFailed(ret) || (ret.GetCost() != 0 && !_settings_game.construction.build_on_slopes)) {
00596       return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00597     }
00598     cost.AddCost(ret);
00599   }
00600 
00601   if (IsTileType(tile, MP_ROAD)) {
00602     /* Don't put the pieces that already exist */
00603     pieces &= ComplementRoadBits(existing);
00604 
00605     /* Check if new road bits will have the same foundation as other existing road types */
00606     if (IsNormalRoad(tile)) {
00607       Slope slope = GetTileSlope(tile, NULL);
00608       Foundation found_new = GetRoadFoundation(slope, pieces | existing);
00609 
00610       /* Test if all other roadtypes can be built at that foundation */
00611       for (RoadType rtest = ROADTYPE_ROAD; rtest < ROADTYPE_END; rtest++) {
00612         if (rtest != rt) { // check only other road types
00613           RoadBits bits = GetRoadBits(tile, rtest);
00614           /* do not check if there are not road bits of given type */
00615           if (bits != ROAD_NONE && GetRoadFoundation(slope, bits) != found_new) {
00616             return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION);
00617           }
00618         }
00619       }
00620     }
00621   }
00622 
00623   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00624 
00625   cost.AddCost(CountBits(pieces) * _price.build_road);
00626   if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00627     /* Pay for *every* tile of the bridge or tunnel */
00628     cost.MultiplyCost(GetTunnelBridgeLength(GetOtherTunnelBridgeEnd(tile), tile) + 2);
00629   }
00630 
00631   if (flags & DC_EXEC) {
00632     switch (GetTileType(tile)) {
00633       case MP_ROAD: {
00634         RoadTileType rtt = GetRoadTileType(tile);
00635         if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) {
00636           SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00637           SetRoadOwner(tile, rt, _current_company);
00638           if (rt == ROADTYPE_ROAD) SetTownIndex(tile, p2);
00639         }
00640         if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt);
00641       } break;
00642 
00643       case MP_TUNNELBRIDGE: {
00644         TileIndex other_end = GetOtherTunnelBridgeEnd(tile);
00645 
00646         SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt));
00647         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00648         SetRoadOwner(other_end, rt, _current_company);
00649         SetRoadOwner(tile, rt, _current_company);
00650 
00651         /* Mark tiles diry that have been repaved */
00652         MarkTileDirtyByTile(other_end);
00653         MarkTileDirtyByTile(tile);
00654         if (IsBridge(tile)) {
00655           TileIndexDiff delta = TileOffsByDiagDir(GetTunnelBridgeDirection(tile));
00656 
00657           for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t);
00658         }
00659       } break;
00660 
00661       case MP_STATION:
00662         assert(IsDriveThroughStopTile(tile));
00663         SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt));
00664         SetRoadOwner(tile, rt, _current_company);
00665         break;
00666 
00667       default:
00668         MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_company, _current_company);
00669         break;
00670     }
00671 
00672     if (rt != ROADTYPE_TRAM && IsNormalRoadTile(tile)) {
00673       existing |= pieces;
00674       SetDisallowedRoadDirections(tile, IsStraightRoad(existing) ?
00675           GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE);
00676     }
00677 
00678     MarkTileDirtyByTile(tile);
00679   }
00680   return cost;
00681 }
00682 
00694 CommandCost CmdBuildLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00695 {
00696   CommandCost cost(EXPENSES_CONSTRUCTION);
00697   bool had_bridge = false;
00698   bool had_tunnel = false;
00699   bool had_success = false;
00700   DisallowedRoadDirections drd = DRD_NORTHBOUND;
00701 
00702   _error_message = INVALID_STRING_ID;
00703 
00704   if (p1 >= MapSize()) return CMD_ERROR;
00705 
00706   TileIndex start_tile = p1;
00707   RoadType rt = (RoadType)GB(p2, 3, 2);
00708   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00709 
00710   /* Only drag in X or Y direction dictated by the direction variable */
00711   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00712   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00713 
00714   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00715   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00716     TileIndex t = start_tile;
00717     start_tile = end_tile;
00718     end_tile = t;
00719     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00720     drd = DRD_SOUTHBOUND;
00721   }
00722 
00723   /* On the X-axis, we have to swap the initial bits, so they
00724    * will be interpreted correctly in the GTTS. Futhermore
00725    * when you just 'click' on one tile to build them. */
00726   if (HasBit(p2, 2) == (start_tile == end_tile && HasBit(p2, 0) == HasBit(p2, 1))) drd ^= DRD_BOTH;
00727   /* No disallowed direction bits have to be toggled */
00728   if (!HasBit(p2, 5)) drd = DRD_NONE;
00729 
00730   TileIndex tile = start_tile;
00731   /* Start tile is the small number. */
00732   for (;;) {
00733     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00734 
00735     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00736     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00737 
00738     _error_message = INVALID_STRING_ID;
00739     CommandCost ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD);
00740     if (CmdFailed(ret)) {
00741       if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR;
00742     } else {
00743       had_success = true;
00744       /* Only pay for the upgrade on one side of the bridges and tunnels */
00745       if (IsTileType(tile, MP_TUNNELBRIDGE)) {
00746         if (IsBridge(tile)) {
00747           if ((!had_bridge || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00748             cost.AddCost(ret);
00749           }
00750           had_bridge = true;
00751         } else { // IsTunnel(tile)
00752           if ((!had_tunnel || GetTunnelBridgeDirection(tile) == DIAGDIR_SE || GetTunnelBridgeDirection(tile) == DIAGDIR_SW)) {
00753             cost.AddCost(ret);
00754           }
00755           had_tunnel = true;
00756         }
00757       } else {
00758         cost.AddCost(ret);
00759       }
00760     }
00761 
00762     if (tile == end_tile) break;
00763 
00764     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00765   }
00766 
00767   return !had_success ? CMD_ERROR : cost;
00768 }
00769 
00780 CommandCost CmdRemoveLongRoad(TileIndex end_tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00781 {
00782   CommandCost cost(EXPENSES_CONSTRUCTION);
00783 
00784   if (p1 >= MapSize()) return CMD_ERROR;
00785 
00786   TileIndex start_tile = p1;
00787   RoadType rt = (RoadType)GB(p2, 3, 2);
00788   if (!IsValidRoadType(rt)) return CMD_ERROR;
00789 
00790   /* Only drag in X or Y direction dictated by the direction variable */
00791   if (!HasBit(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis
00792   if (HasBit(p2, 2)  && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis
00793 
00794   /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */
00795   if (start_tile > end_tile || (start_tile == end_tile && HasBit(p2, 0))) {
00796     TileIndex t = start_tile;
00797     start_tile = end_tile;
00798     end_tile = t;
00799     p2 ^= IsInsideMM(p2 & 3, 1, 3) ? 3 : 0;
00800   }
00801 
00802   Money money = GetAvailableMoneyForCommand();
00803   TileIndex tile = start_tile;
00804   /* Start tile is the small number. */
00805   for (;;) {
00806     RoadBits bits = HasBit(p2, 2) ? ROAD_Y : ROAD_X;
00807 
00808     if (tile == end_tile && !HasBit(p2, 1)) bits &= ROAD_NW | ROAD_NE;
00809     if (tile == start_tile && HasBit(p2, 0)) bits &= ROAD_SE | ROAD_SW;
00810 
00811     /* try to remove the halves. */
00812     if (bits != 0) {
00813       CommandCost ret = RemoveRoad(tile, flags & ~DC_EXEC, bits, rt, true);
00814       if (CmdSucceeded(ret)) {
00815         if (flags & DC_EXEC) {
00816           money -= ret.GetCost();
00817           if (money < 0) {
00818             _additional_cash_required = DoCommand(end_tile, start_tile, p2, flags & ~DC_EXEC, CMD_REMOVE_LONG_ROAD).GetCost();
00819             return cost;
00820           }
00821           RemoveRoad(tile, flags, bits, rt, true, false);
00822         }
00823         cost.AddCost(ret);
00824       }
00825     }
00826 
00827     if (tile == end_tile) break;
00828 
00829     tile += HasBit(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0);
00830   }
00831 
00832   return (cost.GetCost() == 0) ? CMD_ERROR : cost;
00833 }
00834 
00845 CommandCost CmdBuildRoadDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
00846 {
00847   DiagDirection dir = Extract<DiagDirection, 0>(p1);
00848   RoadType rt = (RoadType)GB(p1, 2, 2);
00849 
00850   if (!IsValidRoadType(rt) || !ValParamRoadType(rt)) return CMD_ERROR;
00851 
00852   Slope tileh = GetTileSlope(tile, NULL);
00853   if (tileh != SLOPE_FLAT && (
00854         !_settings_game.construction.build_on_slopes ||
00855         IsSteepSlope(tileh) ||
00856         !CanBuildDepotByTileh(dir, tileh)
00857       )) {
00858     return_cmd_error(STR_0007_FLAT_LAND_REQUIRED);
00859   }
00860 
00861   CommandCost cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00862   if (CmdFailed(cost)) return CMD_ERROR;
00863 
00864   if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
00865 
00866   if (!Depot::CanAllocateItem()) return CMD_ERROR;
00867 
00868   if (flags & DC_EXEC) {
00869     Depot *dep = new Depot(tile);
00870     dep->town_index = ClosestTownFromTile(tile, UINT_MAX)->index;
00871 
00872     MakeRoadDepot(tile, _current_company, dir, rt, dep->town_index);
00873     MarkTileDirtyByTile(tile);
00874   }
00875   return cost.AddCost(_price.build_road_depot);
00876 }
00877 
00878 static CommandCost RemoveRoadDepot(TileIndex tile, DoCommandFlag flags)
00879 {
00880   if (!CheckTileOwnership(tile) && _current_company != OWNER_WATER) return CMD_ERROR;
00881 
00882   if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
00883 
00884   if (flags & DC_EXEC) {
00885     DoClearSquare(tile);
00886     delete GetDepotByTile(tile);
00887   }
00888 
00889   return CommandCost(EXPENSES_CONSTRUCTION, _price.remove_road_depot);
00890 }
00891 
00892 static CommandCost ClearTile_Road(TileIndex tile, DoCommandFlag flags)
00893 {
00894   switch (GetRoadTileType(tile)) {
00895     case ROAD_TILE_NORMAL: {
00896       RoadBits b = GetAllRoadBits(tile);
00897 
00898       /* Clear the road if only one piece is on the tile OR we are not using the DC_AUTO flag */
00899       if ((CountBits(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) || !(flags & DC_AUTO)) {
00900         RoadTypes rts = GetRoadTypes(tile);
00901         CommandCost ret(EXPENSES_CONSTRUCTION);
00902         for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
00903           if (HasBit(rts, rt)) {
00904             CommandCost tmp_ret = RemoveRoad(tile, flags, GetRoadBits(tile, rt), rt, true);
00905             if (CmdFailed(tmp_ret)) return tmp_ret;
00906             ret.AddCost(tmp_ret);
00907           }
00908         }
00909         return ret;
00910       }
00911       return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00912     }
00913 
00914     case ROAD_TILE_CROSSING: {
00915       RoadTypes rts = GetRoadTypes(tile);
00916       CommandCost ret(EXPENSES_CONSTRUCTION);
00917 
00918       if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST);
00919 
00920       /* Must iterate over the roadtypes in a reverse manner because
00921        * tram tracks must be removed before the road bits. */
00922       RoadType rt = ROADTYPE_TRAM;
00923       do {
00924         if (HasBit(rts, rt)) {
00925           CommandCost tmp_ret = RemoveRoad(tile, flags, GetCrossingRoadBits(tile), rt, false);
00926           if (CmdFailed(tmp_ret)) return tmp_ret;
00927           ret.AddCost(tmp_ret);
00928         }
00929       } while (rt-- != ROADTYPE_ROAD);
00930 
00931       if (flags & DC_EXEC) {
00932         DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
00933       }
00934       return ret;
00935     }
00936 
00937     default:
00938     case ROAD_TILE_DEPOT:
00939       if (flags & DC_AUTO) {
00940         return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);
00941       }
00942       return RemoveRoadDepot(tile, flags);
00943   }
00944 }
00945 
00946 
00947 struct DrawRoadTileStruct {
00948   uint16 image;
00949   byte subcoord_x;
00950   byte subcoord_y;
00951 };
00952 
00953 #include "table/road_land.h"
00954 
00962 Foundation GetRoadFoundation(Slope tileh, RoadBits bits)
00963 {
00964   /* Flat land and land without a road doesn't require a foundation */
00965   if (tileh == SLOPE_FLAT || bits == ROAD_NONE) return FOUNDATION_NONE;
00966 
00967   if (!IsSteepSlope(tileh)) {
00968     /* Leveled RoadBits on a slope */
00969     if ((_invalid_tileh_slopes_road[0][tileh] & bits) == ROAD_NONE) return FOUNDATION_LEVELED;
00970 
00971     /* Straight roads without foundation on a slope */
00972     if (!IsSlopeWithOneCornerRaised(tileh) &&
00973         (_invalid_tileh_slopes_road[1][tileh] & bits) == ROAD_NONE)
00974       return FOUNDATION_NONE;
00975   }
00976 
00977   /* Roads on steep Slopes or on Slopes with one corner raised */
00978   return (bits == ROAD_X ? FOUNDATION_INCLINED_X : FOUNDATION_INCLINED_Y);
00979 }
00980 
00981 const byte _road_sloped_sprites[14] = {
00982   0,  0,  2,  0,
00983   0,  1,  0,  0,
00984   3,  0,  0,  0,
00985   0,  0
00986 };
00987 
00998 static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside)
00999 {
01000   return (IsOnSnow(tile) &&
01001       !(_settings_game.game_creation.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) &&
01002         roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS));
01003 }
01004 
01010 void DrawTramCatenary(const TileInfo *ti, RoadBits tram)
01011 {
01012   /* Do not draw catenary if it is invisible */
01013   if (IsInvisibilitySet(TO_CATENARY)) return;
01014 
01015   /* Don't draw the catenary under a low bridge */
01016   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_CATENARY)) {
01017     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01018 
01019     if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
01020   }
01021 
01022   SpriteID front;
01023   SpriteID back;
01024 
01025   if (ti->tileh != SLOPE_FLAT) {
01026     back  = SPR_TRAMWAY_BACK_WIRES_SLOPED  + _road_sloped_sprites[ti->tileh - 1];
01027     front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1];
01028   } else {
01029     back  = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram];
01030     front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram];
01031   }
01032 
01033   AddSortableSpriteToDraw(back,  PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01034   AddSortableSpriteToDraw(front, PAL_NONE, ti->x, ti->y, 16, 16, TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE, ti->z, IsTransparencySet(TO_CATENARY));
01035 }
01036 
01045 static void DrawRoadDetail(SpriteID img, const TileInfo *ti, int dx, int dy, int h)
01046 {
01047   int x = ti->x | dx;
01048   int y = ti->y | dy;
01049   byte z = ti->z;
01050   if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y);
01051   AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z);
01052 }
01053 
01058 static void DrawRoadBits(TileInfo *ti)
01059 {
01060   RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD);
01061   RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM);
01062 
01063   SpriteID image = 0;
01064   SpriteID pal = PAL_NONE;
01065 
01066   if (ti->tileh != SLOPE_FLAT) {
01067     DrawFoundation(ti, GetRoadFoundation(ti->tileh, road | tram));
01068 
01069     /* DrawFoundation() modifies ti.
01070      * Default sloped sprites.. */
01071     if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F;
01072   }
01073 
01074   if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram];
01075 
01076   Roadside roadside = GetRoadside(ti->tile);
01077 
01078   if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01079     image += 19;
01080   } else {
01081     switch (roadside) {
01082       case ROADSIDE_BARREN:           pal = PALETTE_TO_BARE_LAND; break;
01083       case ROADSIDE_GRASS:            break;
01084       case ROADSIDE_GRASS_ROAD_WORKS: break;
01085       default:                        image -= 19; break; // Paved
01086     }
01087   }
01088 
01089   DrawGroundSprite(image, pal);
01090 
01091   /* For tram we overlay the road graphics with either tram tracks only
01092    * (when there is actual road beneath the trams) or with tram tracks
01093    * and some dirts which hides the road graphics */
01094   if (tram != ROAD_NONE) {
01095     if (ti->tileh != SLOPE_FLAT) {
01096       image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET;
01097     } else {
01098       image = _road_tile_sprites_1[tram] - SPR_ROAD_Y;
01099     }
01100     image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY;
01101     DrawGroundSprite(image, pal);
01102   }
01103 
01104   if (road != ROAD_NONE) {
01105     DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile);
01106     if (drd != DRD_NONE) {
01107       DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0);
01108     }
01109   }
01110 
01111   if (HasRoadWorks(ti->tile)) {
01112     /* Road works */
01113     DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE);
01114     return;
01115   }
01116 
01117   if (tram != ROAD_NONE) DrawTramCatenary(ti, tram);
01118 
01119   /* Return if full detail is disabled, or we are zoomed fully out. */
01120   if (!HasBit(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return;
01121 
01122   /* Do not draw details (street lights, trees) under low bridge */
01123   if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && (roadside == ROADSIDE_TREES || roadside == ROADSIDE_STREET_LIGHTS)) {
01124     uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
01125     uint minz = GetTileMaxZ(ti->tile) + 2 * TILE_HEIGHT;
01126 
01127     if (roadside == ROADSIDE_TREES) minz += TILE_HEIGHT;
01128 
01129     if (height < minz) return;
01130   }
01131 
01132   /* If there are no road bits, return, as there is nothing left to do */
01133   if (CountBits(road) < 2) return;
01134 
01135   /* Draw extra details. */
01136   for (const DrawRoadTileStruct *drts = _road_display_table[roadside][road | tram]; drts->image != 0; drts++) {
01137     DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10);
01138   }
01139 }
01140 
01142 static void DrawTile_Road(TileInfo *ti)
01143 {
01144   switch (GetRoadTileType(ti->tile)) {
01145     case ROAD_TILE_NORMAL:
01146       DrawRoadBits(ti);
01147       break;
01148 
01149     case ROAD_TILE_CROSSING: {
01150       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01151 
01152       SpriteID image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing;
01153       SpriteID pal = PAL_NONE;
01154 
01155       if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++;
01156       if (IsCrossingBarred(ti->tile)) image += 2;
01157 
01158       Roadside roadside = GetRoadside(ti->tile);
01159 
01160       if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) {
01161         image += 8;
01162       } else {
01163         switch (roadside) {
01164           case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break;
01165           case ROADSIDE_GRASS:  break;
01166           default:              image += 4; break; // Paved
01167         }
01168       }
01169 
01170       DrawGroundSprite(image, pal);
01171 
01172       /* PBS debugging, draw reserved tracks darker */
01173       if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && GetCrossingReservation(ti->tile)) {
01174         DrawGroundSprite(GetCrossingRoadAxis(ti->tile) == AXIS_Y ? GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_y : GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.single_x, PALETTE_CRASH);
01175       }
01176 
01177       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01178         DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal);
01179         DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile));
01180       }
01181       if (HasCatenaryDrawn(GetRailType(ti->tile))) DrawCatenary(ti);
01182       break;
01183     }
01184 
01185     default:
01186     case ROAD_TILE_DEPOT: {
01187       if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);
01188 
01189       SpriteID palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile));
01190 
01191       const DrawTileSprites *dts;
01192       if (HasTileRoadType(ti->tile, ROADTYPE_TRAM)) {
01193         dts =  &_tram_depot[GetRoadDepotDirection(ti->tile)];
01194       } else {
01195         dts =  &_road_depot[GetRoadDepotDirection(ti->tile)];
01196       }
01197 
01198       DrawGroundSprite(dts->ground.sprite, PAL_NONE);
01199 
01200       /* End now if buildings are invisible */
01201       if (IsInvisibilitySet(TO_BUILDINGS)) break;
01202 
01203       for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01204         SpriteID image = dtss->image.sprite;
01205         SpriteID pal;
01206 
01207         if (!IsTransparencySet(TO_BUILDINGS) && HasBit(image, PALETTE_MODIFIER_COLOUR)) {
01208           pal = palette;
01209         } else {
01210           pal = PAL_NONE;
01211         }
01212 
01213         AddSortableSpriteToDraw(
01214           image, pal,
01215           ti->x + dtss->delta_x, ti->y + dtss->delta_y,
01216           dtss->size_x, dtss->size_y,
01217           dtss->size_z, ti->z,
01218           IsTransparencySet(TO_BUILDINGS)
01219         );
01220       }
01221       break;
01222     }
01223   }
01224   DrawBridgeMiddle(ti);
01225 }
01226 
01227 void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt)
01228 {
01229   SpriteID palette = COMPANY_SPRITE_COLOUR(_local_company);
01230   const DrawTileSprites *dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir];
01231 
01232   x += 33;
01233   y += 17;
01234 
01235   DrawSprite(dts->ground.sprite, PAL_NONE, x, y);
01236 
01237   for (const DrawTileSeqStruct *dtss = dts->seq; dtss->image.sprite != 0; dtss++) {
01238     Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
01239     SpriteID image = dtss->image.sprite;
01240 
01241     DrawSprite(image, HasBit(image, PALETTE_MODIFIER_COLOUR) ? palette : PAL_NONE, x + pt.x, y + pt.y);
01242   }
01243 }
01244 
01249 void UpdateNearestTownForRoadTiles(bool invalidate)
01250 {
01251   assert(!invalidate || _generating_world);
01252 
01253   for (TileIndex t = 0; t < MapSize(); t++) {
01254     if (IsTileType(t, MP_ROAD) && !HasTownOwnedRoad(t)) {
01255       TownID tid = (TownID)INVALID_TOWN;
01256       if (!invalidate) {
01257         const Town *town = CalcClosestTownFromTile(t);
01258         if (town != NULL) tid = town->index;
01259       }
01260       SetTownIndex(t, tid);
01261     }
01262   }
01263 }
01264 
01265 static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y)
01266 {
01267   uint z;
01268   Slope tileh = GetTileSlope(tile, &z);
01269 
01270   if (tileh == SLOPE_FLAT) return z;
01271   if (IsNormalRoad(tile)) {
01272     Foundation f = GetRoadFoundation(tileh, GetAllRoadBits(tile));
01273     z += ApplyFoundationToSlope(f, &tileh);
01274     return z + GetPartialZ(x & 0xF, y & 0xF, tileh);
01275   } else {
01276     return z + TILE_HEIGHT;
01277   }
01278 }
01279 
01280 static Foundation GetFoundation_Road(TileIndex tile, Slope tileh)
01281 {
01282   if (IsNormalRoad(tile)) {
01283     return GetRoadFoundation(tileh, GetAllRoadBits(tile));
01284   } else {
01285     return FlatteningFoundation(tileh);
01286   }
01287 }
01288 
01289 static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac)
01290 {
01291   /* not used */
01292 }
01293 
01294 static void AnimateTile_Road(TileIndex tile)
01295 {
01296   if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile);
01297 }
01298 
01299 
01300 static const Roadside _town_road_types[][2] = {
01301   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01302   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01303   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01304   { ROADSIDE_TREES,         ROADSIDE_TREES },
01305   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01306 };
01307 
01308 static const Roadside _town_road_types_2[][2] = {
01309   { ROADSIDE_GRASS,         ROADSIDE_GRASS },
01310   { ROADSIDE_PAVED,         ROADSIDE_PAVED },
01311   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01312   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED },
01313   { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }
01314 };
01315 
01316 
01317 static void TileLoop_Road(TileIndex tile)
01318 {
01319   switch (_settings_game.game_creation.landscape) {
01320     case LT_ARCTIC:
01321       if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) {
01322         ToggleSnow(tile);
01323         MarkTileDirtyByTile(tile);
01324       }
01325       break;
01326 
01327     case LT_TROPIC:
01328       if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) {
01329         ToggleDesert(tile);
01330         MarkTileDirtyByTile(tile);
01331       }
01332       break;
01333   }
01334 
01335   if (IsRoadDepot(tile)) return;
01336 
01337   const Town *t = ClosestTownFromTile(tile, UINT_MAX);
01338   if (!HasRoadWorks(tile)) {
01339     HouseZonesBits grp = HZB_TOWN_EDGE;
01340 
01341     if (t != NULL) {
01342       grp = GetTownRadiusGroup(t, tile);
01343 
01344       /* Show an animation to indicate road work */
01345       if (t->road_build_months != 0 &&
01346           (DistanceManhattan(t->xy, tile) < 8 || grp != HZB_TOWN_EDGE) &&
01347           IsNormalRoad(tile) && CountBits(GetAllRoadBits(tile)) > 1 ) {
01348         if (GetFoundationSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && Chance16(1, 40)) {
01349           StartRoadWorks(tile);
01350 
01351           SndPlayTileFx(SND_21_JACKHAMMER, tile);
01352           CreateEffectVehicleAbove(
01353             TileX(tile) * TILE_SIZE + 7,
01354             TileY(tile) * TILE_SIZE + 7,
01355             0,
01356             EV_BULLDOZER);
01357           MarkTileDirtyByTile(tile);
01358           return;
01359         }
01360       }
01361     }
01362 
01363     {
01364       /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */
01365       const Roadside *new_rs = (_settings_game.game_creation.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp];
01366       Roadside cur_rs = GetRoadside(tile);
01367 
01368       /* We have our desired type, do nothing */
01369       if (cur_rs == new_rs[0]) return;
01370 
01371       /* We have the pre-type of the desired type, switch to the desired type */
01372       if (cur_rs == new_rs[1]) {
01373         cur_rs = new_rs[0];
01374       /* We have barren land, install the pre-type */
01375       } else if (cur_rs == ROADSIDE_BARREN) {
01376         cur_rs = new_rs[1];
01377       /* We're totally off limits, remove any installation and make barren land */
01378       } else {
01379         cur_rs = ROADSIDE_BARREN;
01380       }
01381       SetRoadside(tile, cur_rs);
01382       MarkTileDirtyByTile(tile);
01383     }
01384   } else if (IncreaseRoadWorksCounter(tile)) {
01385     TerminateRoadWorks(tile);
01386 
01387     if (_settings_game.economy.mod_road_rebuild) {
01388       /* Generate a nicer town surface */
01389       const RoadBits old_rb = GetAnyRoadBits(tile, ROADTYPE_ROAD);
01390       const RoadBits new_rb = CleanUpRoadBits(tile, old_rb);
01391 
01392       if (old_rb != new_rb) {
01393         RemoveRoad(tile, DC_EXEC | DC_AUTO | DC_NO_WATER, (old_rb ^ new_rb), ROADTYPE_ROAD, true);
01394       }
01395     }
01396 
01397     MarkTileDirtyByTile(tile);
01398   }
01399 }
01400 
01401 static bool ClickTile_Road(TileIndex tile)
01402 {
01403   if (!IsRoadDepot(tile)) return false;
01404 
01405   ShowDepotWindow(tile, VEH_ROAD);
01406   return true;
01407 }
01408 
01409 /* Converts RoadBits to TrackBits */
01410 static const byte _road_trackbits[16] = {
01411   0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F,
01412 };
01413 
01414 static TrackStatus GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
01415 {
01416   TrackdirBits trackdirbits = TRACKDIR_BIT_NONE;
01417   TrackdirBits red_signals = TRACKDIR_BIT_NONE; // crossing barred
01418   switch (mode) {
01419     case TRANSPORT_RAIL:
01420       if (IsLevelCrossing(tile)) trackdirbits = TrackBitsToTrackdirBits(GetCrossingRailBits(tile));
01421       break;
01422 
01423     case TRANSPORT_ROAD:
01424       if ((GetRoadTypes(tile) & sub_mode) == 0) break;
01425       switch (GetRoadTileType(tile)) {
01426         case ROAD_TILE_NORMAL: {
01427           const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 };
01428           RoadType rt = (RoadType)FindFirstBit(sub_mode);
01429           RoadBits bits = GetRoadBits(tile, rt);
01430 
01431           /* no roadbit at this side of tile, return 0 */
01432           if (side != INVALID_DIAGDIR && (DiagDirToRoadBits(side) & bits) == 0) break;
01433 
01434           uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)];
01435           if (!HasRoadWorks(tile)) trackdirbits = (TrackdirBits)(_road_trackbits[bits] * multiplier);
01436           break;
01437         }
01438 
01439         case ROAD_TILE_CROSSING: {
01440           Axis axis = GetCrossingRoadAxis(tile);
01441 
01442           if (side != INVALID_DIAGDIR && axis != DiagDirToAxis(side)) break;
01443 
01444           trackdirbits = TrackBitsToTrackdirBits(AxisToTrackBits(axis));
01445           if (IsCrossingBarred(tile)) red_signals = trackdirbits;
01446           break;
01447         }
01448 
01449         default:
01450         case ROAD_TILE_DEPOT: {
01451           DiagDirection dir = GetRoadDepotDirection(tile);
01452 
01453           if (side != INVALID_DIAGDIR && side != dir) break;
01454 
01455           trackdirbits = TrackBitsToTrackdirBits(DiagDirToDiagTrackBits(dir));
01456           break;
01457         }
01458       }
01459       break;
01460 
01461     default: break;
01462   }
01463   return CombineTrackStatus(trackdirbits, red_signals);
01464 }
01465 
01466 static const StringID _road_tile_strings[] = {
01467   STR_1814_ROAD,
01468   STR_1814_ROAD,
01469   STR_1814_ROAD,
01470   STR_1815_ROAD_WITH_STREETLIGHTS,
01471   STR_1814_ROAD,
01472   STR_1816_TREE_LINED_ROAD,
01473   STR_1814_ROAD,
01474   STR_1814_ROAD,
01475 };
01476 
01477 static void GetTileDesc_Road(TileIndex tile, TileDesc *td)
01478 {
01479   Owner rail_owner = INVALID_OWNER;
01480   Owner road_owner = INVALID_OWNER;
01481   Owner tram_owner = INVALID_OWNER;
01482 
01483   switch (GetRoadTileType(tile)) {
01484     case ROAD_TILE_CROSSING: {
01485       td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING;
01486       RoadTypes rts = GetRoadTypes(tile);
01487       rail_owner = GetTileOwner(tile);
01488       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01489       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01490       break;
01491     }
01492 
01493     case ROAD_TILE_DEPOT:
01494       td->str = STR_1817_ROAD_VEHICLE_DEPOT;
01495       road_owner = GetTileOwner(tile); // Tile has only one owner, roadtype does not matter
01496       break;
01497 
01498     default: {
01499       RoadTypes rts = GetRoadTypes(tile);
01500       td->str = (HasBit(rts, ROADTYPE_ROAD) ? _road_tile_strings[GetRoadside(tile)] : STR_TRAMWAY);
01501       if (HasBit(rts, ROADTYPE_ROAD)) road_owner = GetRoadOwner(tile, ROADTYPE_ROAD);
01502       if (HasBit(rts, ROADTYPE_TRAM)) tram_owner = GetRoadOwner(tile, ROADTYPE_TRAM);
01503       break;
01504     }
01505   }
01506 
01507   /* Now we have to discover, if the tile has only one owner or many:
01508    *   - Find a first_owner of the tile. (Currently road or tram must be present, but this will break when the third type becomes available)
01509    *   - Compare the found owner with the other owners, and test if they differ.
01510    * Note: If road exists it will be the first_owner.
01511    */
01512   Owner first_owner = (road_owner == INVALID_OWNER ? tram_owner : road_owner);
01513   bool mixed_owners = (tram_owner != INVALID_OWNER && tram_owner != first_owner) || (rail_owner != INVALID_OWNER && rail_owner != first_owner);
01514 
01515   if (mixed_owners) {
01516     /* Multiple owners */
01517     td->owner_type[0] = (rail_owner == INVALID_OWNER ? STR_NULL : STR_RAIL_OWNER);
01518     td->owner[0] = rail_owner;
01519     td->owner_type[1] = (road_owner == INVALID_OWNER ? STR_NULL : STR_ROAD_OWNER);
01520     td->owner[1] = road_owner;
01521     td->owner_type[2] = (tram_owner == INVALID_OWNER ? STR_NULL : STR_TRAM_OWNER);
01522     td->owner[2] = tram_owner;
01523   } else {
01524     /* One to rule them all */
01525     td->owner[0] = first_owner;
01526   }
01527 }
01528 
01533 static const byte _roadveh_enter_depot_dir[4] = {
01534   TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE
01535 };
01536 
01537 static VehicleEnterTileStatus VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y)
01538 {
01539   switch (GetRoadTileType(tile)) {
01540     case ROAD_TILE_CROSSING:
01541       if (v->type == VEH_TRAIN) {
01542         /* it should be barred */
01543         assert(IsCrossingBarred(tile));
01544       }
01545       break;
01546 
01547     case ROAD_TILE_DEPOT:
01548       if (v->type == VEH_ROAD &&
01549           v->u.road.frame == RVC_DEPOT_STOP_FRAME &&
01550           _roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) {
01551         v->u.road.state = RVSB_IN_DEPOT;
01552         v->vehstatus |= VS_HIDDEN;
01553         v->direction = ReverseDir(v->direction);
01554         if (v->Next() == NULL) VehicleEnterDepot(v);
01555         v->tile = tile;
01556 
01557         InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
01558         return VETSB_ENTERED_WORMHOLE;
01559       }
01560       break;
01561 
01562     default: break;
01563   }
01564   return VETSB_CONTINUE;
01565 }
01566 
01567 
01568 static void ChangeTileOwner_Road(TileIndex tile, Owner old_owner, Owner new_owner)
01569 {
01570   if (IsRoadDepot(tile)) {
01571     if (GetTileOwner(tile) == old_owner) {
01572       if (new_owner == INVALID_OWNER) {
01573         DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
01574       } else {
01575         SetTileOwner(tile, new_owner);
01576       }
01577     }
01578     return;
01579   }
01580 
01581   for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) {
01582     /* Update all roadtypes, no matter if they are present */
01583     if (GetRoadOwner(tile, rt) == old_owner) {
01584       SetRoadOwner(tile, rt, new_owner == INVALID_OWNER ? OWNER_NONE : new_owner);
01585     }
01586   }
01587 
01588   if (IsLevelCrossing(tile)) {
01589     if (GetTileOwner(tile) == old_owner) {
01590       if (new_owner == INVALID_OWNER) {
01591         DoCommand(tile, 0, GetCrossingRailTrack(tile), DC_EXEC | DC_BANKRUPT, CMD_REMOVE_SINGLE_RAIL);
01592       } else {
01593         SetTileOwner(tile, new_owner);
01594       }
01595     }
01596   }
01597 }
01598 
01599 static CommandCost TerraformTile_Road(TileIndex tile, DoCommandFlag flags, uint z_new, Slope tileh_new)
01600 {
01601   if (_settings_game.construction.build_on_slopes && AutoslopeEnabled()) {
01602     switch (GetRoadTileType(tile)) {
01603       case ROAD_TILE_CROSSING:
01604         if (!IsSteepSlope(tileh_new) && (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) && HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01605         break;
01606 
01607       case ROAD_TILE_DEPOT:
01608         if (AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRoadDepotDirection(tile))) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01609         break;
01610 
01611       case ROAD_TILE_NORMAL: {
01612         RoadBits bits = GetAllRoadBits(tile);
01613         RoadBits bits_copy = bits;
01614         /* Check if the slope-road_bits combination is valid at all, i.e. it is safe to call GetRoadFoundation(). */
01615         if (!CmdFailed(CheckRoadSlope(tileh_new, &bits_copy, ROAD_NONE, ROAD_NONE))) {
01616           /* CheckRoadSlope() sometimes changes the road_bits, if it does not agree with them. */
01617           if (bits == bits_copy) {
01618             uint z_old;
01619             Slope tileh_old = GetTileSlope(tile, &z_old);
01620 
01621             /* Get the slope on top of the foundation */
01622             z_old += ApplyFoundationToSlope(GetRoadFoundation(tileh_old, bits), &tileh_old);
01623             z_new += ApplyFoundationToSlope(GetRoadFoundation(tileh_new, bits), &tileh_new);
01624 
01625             /* The surface slope must not be changed */
01626             if ((z_old == z_new) && (tileh_old == tileh_new)) return CommandCost(EXPENSES_CONSTRUCTION, _price.terraform);
01627           }
01628         }
01629         break;
01630       }
01631 
01632       default: NOT_REACHED();
01633     }
01634   }
01635 
01636   return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
01637 }
01638 
01640 extern const TileTypeProcs _tile_type_road_procs = {
01641   DrawTile_Road,           // draw_tile_proc
01642   GetSlopeZ_Road,          // get_slope_z_proc
01643   ClearTile_Road,          // clear_tile_proc
01644   GetAcceptedCargo_Road,   // get_accepted_cargo_proc
01645   GetTileDesc_Road,        // get_tile_desc_proc
01646   GetTileTrackStatus_Road, // get_tile_track_status_proc
01647   ClickTile_Road,          // click_tile_proc
01648   AnimateTile_Road,        // animate_tile_proc
01649   TileLoop_Road,           // tile_loop_clear
01650   ChangeTileOwner_Road,    // change_tile_owner_clear
01651   NULL,                    // get_produced_cargo_proc
01652   VehicleEnter_Road,       // vehicle_enter_tile_proc
01653   GetFoundation_Road,      // get_foundation_proc
01654   TerraformTile_Road,      // terraform_tile_proc
01655 };

Generated on Mon Mar 9 23:33:49 2009 for openttd by  doxygen 1.5.6