/* $Id$ */ /** @file road_cmd.cpp */ #include "stdafx.h" #include "openttd.h" #include "bridge_map.h" #include "bridge.h" #include "cmd_helper.h" #include "rail_map.h" #include "road_map.h" #include "sprite.h" #include "table/sprites.h" #include "table/strings.h" #include "functions.h" #include "window.h" #include "map.h" #include "landscape.h" #include "tile.h" #include "town_map.h" #include "vehicle.h" #include "viewport.h" #include "command.h" #include "player.h" #include "town.h" #include "gfx.h" #include "sound.h" #include "yapf/yapf.h" #include "depot.h" #include "newgrf.h" #include "station_map.h" #include "tunnel_map.h" static uint CountRoadBits(RoadBits r) { uint count = 0; if (r & ROAD_NW) ++count; if (r & ROAD_SW) ++count; if (r & ROAD_SE) ++count; if (r & ROAD_NE) ++count; return count; } bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, bool *edge_road, RoadType rt) { RoadBits present; RoadBits n; *edge_road = true; if (_game_mode == GM_EDITOR || remove == ROAD_NONE) return true; /* Water can always flood and towns can always remove "normal" road pieces. * Towns are not be allowed to remove non "normal" road pieces, like tram * tracks as that would result in trams that cannot turn. */ if (_current_player == OWNER_WATER || (rt == ROADTYPE_ROAD && !IsValidPlayer(_current_player))) return true; /* Only do the special processing if the road is owned * by a town */ if (owner != OWNER_TOWN) return (owner == OWNER_NONE) || CheckOwnership(owner); if (_cheats.magic_bulldozer.value) return true; /* Get a bitmask of which neighbouring roads has a tile */ n = ROAD_NONE; present = GetAnyRoadBits(tile, rt); if (present & ROAD_NE && GetAnyRoadBits(TILE_ADDXY(tile, -1, 0), rt) & ROAD_SW) n |= ROAD_NE; if (present & ROAD_SE && GetAnyRoadBits(TILE_ADDXY(tile, 0, 1), rt) & ROAD_NW) n |= ROAD_SE; if (present & ROAD_SW && GetAnyRoadBits(TILE_ADDXY(tile, 1, 0), rt) & ROAD_NE) n |= ROAD_SW; if (present & ROAD_NW && GetAnyRoadBits(TILE_ADDXY(tile, 0, -1), rt) & ROAD_SE) n |= ROAD_NW; /* If 0 or 1 bits are set in n, or if no bits that match the bits to remove, * then allow it */ if ((n & (n - 1)) != 0 && (n & remove) != 0) { Town *t; *edge_road = false; /* you can remove all kind of roads with extra dynamite */ if (_patches.extra_dynamite) return true; t = ClosestTownFromTile(tile, (uint)-1); SetDParam(0, t->index); _error_message = STR_2009_LOCAL_AUTHORITY_REFUSES; return false; } return true; } static bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, bool *edge_road, RoadType rt) { return CheckAllowRemoveRoad(tile, remove, GetRoadOwner(tile, rt), edge_road, rt); } /** Delete a piece of road. * @param tile tile where to remove road from * @param flags operation to perform * @param p1 bit 0..3 road pieces to remove (RoadBits) * bit 4..5 road type * bit 6 ignore the fact that the tram track has not been removed * yet when removing the road bits when not actually doing * it. Makes it possible to test whether the road bits can * be removed from a level crossing without physically * removing the tram bits before the test. * @param p2 unused */ int32 CmdRemoveRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) { /* cost for removing inner/edge -roads */ static const uint16 road_remove_cost[2] = {50, 18}; Town *t; /* true if the roadpiece was always removeable, * false if it was a center piece. Affects town ratings drop */ bool edge_road; SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); RoadType rt = (RoadType)GB(p1, 4, 2); if (!IsValidRoadType(rt)) return CMD_ERROR; Owner owner; switch (GetTileType(tile)) { case MP_STREET: owner = GetRoadOwner(tile, rt); break; case MP_STATION: if (!IsDriveThroughStopTile(tile)) return CMD_ERROR; owner = GetTileOwner(tile); break; case MP_TUNNELBRIDGE: if ((IsTunnel(tile) && GetTunnelTransportType(tile) != TRANSPORT_ROAD) || (IsBridge(tile) && GetBridgeTransportType(tile) != TRANSPORT_ROAD)) return CMD_ERROR; owner = GetTileOwner(tile); break; default: return CMD_ERROR; } if (owner == OWNER_TOWN && _game_mode != GM_EDITOR) { t = GetTownByTile(tile); } else { t = NULL; } RoadBits pieces = Extract<RoadBits, 0>(p1); RoadTypes rts = GetRoadTypes(tile); /* The tile doesn't have the given road type */ if (!HASBIT(rts, rt)) return CMD_ERROR; if (!CheckAllowRemoveRoad(tile, pieces, &edge_road, rt)) return CMD_ERROR; if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR; /* check if you're allowed to remove the street owned by a town * removal allowance depends on difficulty setting */ if (!CheckforTownRating(flags, t, ROAD_REMOVE)) return CMD_ERROR; if (!IsTileType(tile, MP_STREET)) { /* If it's the last roadtype, just clear the whole tile */ if (rts == RoadTypeToRoadTypes(rt)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); int32 cost; if (IsTileType(tile, MP_TUNNELBRIDGE)) { TileIndex other_end = IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile); /* Pay for *every* tile of the bridge or tunnel */ cost = (DistanceManhattan(IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile), tile) + 1) * _price.remove_road; if (flags & DC_EXEC) { SetRoadTypes(other_end, GetRoadTypes(other_end) & ~RoadTypeToRoadTypes(rt)); SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt)); /* Mark tiles diry that have been repaved */ MarkTileDirtyByTile(tile); MarkTileDirtyByTile(other_end); if (IsBridge(tile)) { TileIndexDiff delta = TileOffsByDiagDir(GetBridgeRampDirection(tile)); for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t); } } } else { cost = _price.remove_road; if (flags & DC_EXEC) { SetRoadTypes(tile, GetRoadTypes(tile) & ~RoadTypeToRoadTypes(rt)); MarkTileDirtyByTile(tile); } } return cost; } switch (GetRoadTileType(tile)) { case ROAD_TILE_NORMAL: { RoadBits present = GetRoadBits(tile, rt); RoadBits c = pieces; if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS); if (GetTileSlope(tile, NULL) != SLOPE_FLAT && (present == ROAD_Y || present == ROAD_X)) { c |= (RoadBits)((c & 0xC) >> 2); c |= (RoadBits)((c & 0x3) << 2); } /* limit the bits to delete to the existing bits. */ c &= present; if (c == ROAD_NONE) return CMD_ERROR; if (flags & DC_EXEC) { ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM); present ^= c; if (present == ROAD_NONE) { RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt)); if (rts == ROADTYPES_NONE) { DoClearSquare(tile); } else { SetRoadBits(tile, ROAD_NONE, rt); SetRoadTypes(tile, rts); } } else { /* When bits are removed, you *always* end up with something that * is not a complete straight road tile. However, trams do not have * onewayness, so they cannot remove it either. */ if (rt != ROADTYPE_TRAM) SetDisallowedRoadDirections(tile, DRD_NONE); SetRoadBits(tile, present, rt); MarkTileDirtyByTile(tile); } } return CountRoadBits(c) * _price.remove_road; } case ROAD_TILE_CROSSING: { if (pieces & ComplementRoadBits(GetCrossingRoadBits(tile))) { return CMD_ERROR; } /* Don't allow road to be removed from the crossing when there is tram; * we can't draw the crossing without trambits ;) */ if (rt == ROADTYPE_ROAD && HASBIT(GetRoadTypes(tile), ROADTYPE_TRAM) && ((flags & DC_EXEC) || !HASBIT(p1, 6))) return CMD_ERROR; if (flags & DC_EXEC) { if (rt == ROADTYPE_ROAD) { ChangeTownRating(t, -road_remove_cost[(byte)edge_road], RATING_ROAD_MINIMUM); } RoadTypes rts = GetRoadTypes(tile) & ComplementRoadTypes(RoadTypeToRoadTypes(rt)); if (rts == ROADTYPES_NONE) { MakeRailNormal(tile, GetTileOwner(tile), GetCrossingRailBits(tile), GetRailType(tile)); } else { SetRoadTypes(tile, rts); } MarkTileDirtyByTile(tile); YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile))); } return _price.remove_road * 2; } default: case ROAD_TILE_DEPOT: return CMD_ERROR; } } static const RoadBits _valid_tileh_slopes_road[][15] = { /* set of normal ones */ { ROAD_ALL, ROAD_NONE, ROAD_NONE, ROAD_X, ROAD_NONE, ROAD_NONE, // 3, 4, 5 ROAD_Y, ROAD_NONE, ROAD_NONE, ROAD_Y, ROAD_NONE, ROAD_NONE, // 9, 10, 11 ROAD_X, ROAD_NONE, ROAD_NONE }, /* allowed road for an evenly raised platform */ { ROAD_NONE, ROAD_SW | ROAD_NW, ROAD_SW | ROAD_SE, ROAD_Y | ROAD_SW, ROAD_SE | ROAD_NE, // 4 ROAD_ALL, ROAD_X | ROAD_SE, ROAD_ALL, ROAD_NW | ROAD_NE, // 8 ROAD_X | ROAD_NW, ROAD_ALL, ROAD_ALL, ROAD_Y | ROAD_NE, // 12 ROAD_ALL, ROAD_ALL }, }; static uint32 CheckRoadSlope(Slope tileh, RoadBits* pieces, RoadBits existing) { RoadBits road_bits; if (IsSteepSlope(tileh)) { if (existing == 0) { /* force full pieces. */ *pieces |= (RoadBits)((*pieces & 0xC) >> 2); *pieces |= (RoadBits)((*pieces & 0x3) << 2); if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform; } return CMD_ERROR; } road_bits = *pieces | existing; /* no special foundation */ if ((~_valid_tileh_slopes_road[0][tileh] & road_bits) == 0) { /* force that all bits are set when we have slopes */ if (tileh != SLOPE_FLAT) *pieces |= _valid_tileh_slopes_road[0][tileh]; return 0; // no extra cost } /* foundation is used. Whole tile is leveled up */ if ((~_valid_tileh_slopes_road[1][tileh] & road_bits) == 0) { return existing != 0 ? 0 : _price.terraform; } /* partly leveled up tile, only if there's no road on that tile */ if (existing == 0 && (tileh == SLOPE_W || tileh == SLOPE_S || tileh == SLOPE_E || tileh == SLOPE_N)) { /* force full pieces. */ *pieces |= (RoadBits)((*pieces & 0xC) >> 2); *pieces |= (RoadBits)((*pieces & 0x3) << 2); if (*pieces == ROAD_X || *pieces == ROAD_Y) return _price.terraform; } return CMD_ERROR; } /** Build a piece of road. * @param tile tile where to build road * @param flags operation to perform * @param p1 bit 0..3 road pieces to build (RoadBits) * bit 4..5 road type * bit 6..7 disallowed directions to toggle * @param p2 the town that is building the road (0 if not applicable) */ int32 CmdBuildRoad(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) { int32 cost = 0; int32 ret; RoadBits existing = ROAD_NONE; RoadBits all_bits = ROAD_NONE; Slope tileh; SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); /* Road pieces are max 4 bitset values (NE, NW, SE, SW) and town can only be non-zero * if a non-player is building the road */ if ((IsValidPlayer(_current_player) && p2 != 0) || (_current_player == OWNER_TOWN && !IsValidTownID(p2))) return CMD_ERROR; RoadBits pieces = Extract<RoadBits, 0>(p1); RoadType rt = (RoadType)GB(p1, 4, 2); if (!IsValidRoadType(rt)) return CMD_ERROR; DisallowedRoadDirections toggle_drd = (DisallowedRoadDirections)GB(p1, 6, 2); tileh = GetTileSlope(tile, NULL); switch (GetTileType(tile)) { case MP_STREET: switch (GetRoadTileType(tile)) { case ROAD_TILE_NORMAL: { if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS); if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR; all_bits = GetAllRoadBits(tile); if (!HASBIT(GetRoadTypes(tile), rt)) break; existing = GetRoadBits(tile, rt); RoadBits merged = existing | pieces; bool crossing = (merged != ROAD_X && merged != ROAD_Y); if (rt != ROADTYPE_TRAM && (GetDisallowedRoadDirections(tile) != DRD_NONE || toggle_drd != DRD_NONE) && crossing) { /* Junctions cannot be one-way */ return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION); } if ((existing & pieces) == pieces) { /* We only want to set the (dis)allowed road directions */ if (toggle_drd != DRD_NONE && rt != ROADTYPE_TRAM && GetRoadOwner(tile, ROADTYPE_ROAD) == _current_player) { if (crossing) return_cmd_error(STR_ERR_ONEWAY_ROADS_CAN_T_HAVE_JUNCTION); /* Ignore half built tiles */ if (flags & DC_EXEC && rt != ROADTYPE_TRAM && (existing == ROAD_X || existing == ROAD_Y)) { SetDisallowedRoadDirections(tile, GetDisallowedRoadDirections(tile) ^ toggle_drd); MarkTileDirtyByTile(tile); } return 0; } return_cmd_error(STR_1007_ALREADY_BUILT); } } break; case ROAD_TILE_CROSSING: if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT); all_bits = GetCrossingRoadBits(tile); if (pieces & ComplementRoadBits(all_bits)) goto do_clear; break; default: case ROAD_TILE_DEPOT: goto do_clear; } break; case MP_RAILWAY: { Axis roaddir; if (IsSteepSlope(tileh)) { return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); } #define M(x) (1 << (x)) /* Level crossings may only be built on these slopes */ if (!HASBIT(M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT), tileh)) { return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); } #undef M if (GetRailTileType(tile) != RAIL_TILE_NORMAL) goto do_clear; switch (GetTrackBits(tile)) { case TRACK_BIT_X: if (pieces & ROAD_X) goto do_clear; roaddir = AXIS_Y; break; case TRACK_BIT_Y: if (pieces & ROAD_Y) goto do_clear; roaddir = AXIS_X; break; default: goto do_clear; } if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR; if (flags & DC_EXEC) { YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetTrackBits(tile))); /* Always add road to the roadtypes (can't draw without it) */ MakeRoadCrossing(tile, _current_player, _current_player, _current_player, GetTileOwner(tile), roaddir, GetRailType(tile), RoadTypeToRoadTypes(rt) | ROADTYPES_ROAD, p2); MarkTileDirtyByTile(tile); } return _price.build_road * (rt == ROADTYPE_ROAD ? 2 : 4); } case MP_STATION: if (!IsDriveThroughStopTile(tile)) return CMD_ERROR; if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT); /* Don't allow "upgrading" the roadstop when vehicles are already driving on it */ if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR; break; case MP_TUNNELBRIDGE: if ((IsTunnel(tile) && GetTunnelTransportType(tile) != TRANSPORT_ROAD) || (IsBridge(tile) && GetBridgeTransportType(tile) != TRANSPORT_ROAD)) return CMD_ERROR; if (HASBIT(GetRoadTypes(tile), rt)) return_cmd_error(STR_1007_ALREADY_BUILT); /* Don't allow "upgrading" the bridge/tunnel when vehicles are already driving on it */ if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR; break; default: do_clear:; ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); if (CmdFailed(ret)) return ret; cost += ret; } if (all_bits != pieces) { /* Check the foundation/slopes when adding road/tram bits */ ret = CheckRoadSlope(tileh, &pieces, all_bits | existing); /* Return an error if we need to build a foundation (ret != 0) but the * current patch-setting is turned off (or stupid AI@work) */ if (CmdFailed(ret) || (ret != 0 && (!_patches.build_on_slopes || _is_old_ai_player))) { return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); } cost += ret; } if (IsTileType(tile, MP_STREET)) { /* Don't put the pieces that already exist */ pieces &= ComplementRoadBits(existing); } cost += CountRoadBits(pieces) * _price.build_road; if (IsTileType(tile, MP_TUNNELBRIDGE)) { /* Pay for *every* tile of the bridge or tunnel */ cost *= DistanceManhattan(IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile), tile); } if (flags & DC_EXEC) { switch (GetTileType(tile)) { case MP_STREET: { RoadTileType rtt = GetRoadTileType(tile); if (existing == ROAD_NONE || rtt == ROAD_TILE_CROSSING) { SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt)); SetRoadOwner(tile, rt, _current_player); } if (rtt != ROAD_TILE_CROSSING) SetRoadBits(tile, existing | pieces, rt); } break; case MP_TUNNELBRIDGE: { TileIndex other_end = IsTunnel(tile) ? GetOtherTunnelEnd(tile) : GetOtherBridgeEnd(tile); SetRoadTypes(other_end, GetRoadTypes(other_end) | RoadTypeToRoadTypes(rt)); SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt)); /* Mark tiles diry that have been repaved */ MarkTileDirtyByTile(other_end); MarkTileDirtyByTile(tile); if (IsBridge(tile)) { TileIndexDiff delta = TileOffsByDiagDir(GetBridgeRampDirection(tile)); for (TileIndex t = tile + delta; t != other_end; t += delta) MarkTileDirtyByTile(t); } } break; case MP_STATION: SetRoadTypes(tile, GetRoadTypes(tile) | RoadTypeToRoadTypes(rt)); break; default: MakeRoadNormal(tile, pieces, RoadTypeToRoadTypes(rt), p2, _current_player, _current_player, _current_player); break; } if (rt != ROADTYPE_TRAM && IsTileType(tile, MP_STREET) && GetRoadTileType(tile) == ROAD_TILE_NORMAL) { existing |= pieces; SetDisallowedRoadDirections(tile, (existing == ROAD_X || existing == ROAD_Y) ? GetDisallowedRoadDirections(tile) ^ toggle_drd : DRD_NONE); } MarkTileDirtyByTile(tile); } return cost; } /** * Switches the rail type on a level crossing. * @param tile The tile on which the railtype is to be convert. * @param totype The railtype we want to convert to * @param exec Switches between test and execute mode * @return The cost and state of the operation * @retval CMD_ERROR An error occured during the operation. */ int32 DoConvertStreetRail(TileIndex tile, RailType totype, bool exec) { /* not a railroad crossing? */ if (!IsLevelCrossing(tile)) return CMD_ERROR; /* not owned by me? */ if (!CheckTileOwnership(tile) || !EnsureNoVehicleOnGround(tile)) return CMD_ERROR; if (GetRailType(tile) == totype) return CMD_ERROR; /* 'hidden' elrails can't be downgraded to normal rail when elrails are disabled */ if (_patches.disable_elrails && totype == RAILTYPE_RAIL && GetRailType(tile) == RAILTYPE_ELECTRIC) return CMD_ERROR; if (exec) { SetRailType(tile, totype); MarkTileDirtyByTile(tile); YapfNotifyTrackLayoutChange(tile, FindFirstTrack(GetCrossingRailBits(tile))); } return _price.build_rail / 2; } /** Build a long piece of road. * @param end_tile end tile of drag * @param flags operation to perform * @param p1 start tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1) * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2) * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4) * - p2 = (bit 3 + 4) - road type * - p2 = (bit 5) - set road direction */ int32 CmdBuildLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2) { TileIndex start_tile, tile; int32 cost, ret; bool had_bridge = false; bool had_success = false; DisallowedRoadDirections drd = DRD_NORTHBOUND; SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); if (p1 >= MapSize()) return CMD_ERROR; start_tile = p1; RoadType rt = (RoadType)GB(p2, 3, 2); if (!IsValidRoadType(rt)) return CMD_ERROR; /* Only drag in X or Y direction dictated by the direction variable */ if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */ if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) { TileIndex t = start_tile; start_tile = end_tile; end_tile = t; p2 ^= IS_INT_INSIDE(p2 & 3, 1, 3) ? 3 : 0; drd = DRD_SOUTHBOUND; } /* On the X-axis, we have to swap the initial bits, so they * will be interpreted correctly in the GTTS. Futhermore * when you just 'click' on one tile to build them. */ if (HASBIT(p2, 2) == (start_tile == end_tile)) drd ^= DRD_BOTH; /* No disallowed direction bits have to be toggled */ if (!HASBIT(p2, 5)) drd = DRD_NONE; cost = 0; tile = start_tile; /* Start tile is the small number. */ for (;;) { RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X; if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE; if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW; ret = DoCommand(tile, drd << 6 | rt << 4 | bits, 0, flags, CMD_BUILD_ROAD); if (CmdFailed(ret)) { if (_error_message != STR_1007_ALREADY_BUILT) return CMD_ERROR; _error_message = INVALID_STRING_ID; } else { had_success = true; /* Only pay for the upgrade on one side of the bridge */ if (IsBridgeTile(tile)) { if ((!had_bridge || GetBridgeRampDirection(tile) == DIAGDIR_SE || GetBridgeRampDirection(tile) == DIAGDIR_SW)) { cost += ret; } had_bridge = true; } else { cost += ret; } } if (tile == end_tile) break; tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0); } return !had_success ? CMD_ERROR : cost; } /** Remove a long piece of road. * @param end_tile end tile of drag * @param flags operation to perform * @param p1 start tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0) - start tile starts in the 2nd half of tile (p2 & 1) * - p2 = (bit 1) - end tile starts in the 2nd half of tile (p2 & 2) * - p2 = (bit 2) - direction: 0 = along x-axis, 1 = along y-axis (p2 & 4) * - p2 = (bit 3 + 4) - road type */ int32 CmdRemoveLongRoad(TileIndex end_tile, uint32 flags, uint32 p1, uint32 p2) { TileIndex start_tile, tile; int32 cost, ret; SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); if (p1 >= MapSize()) return CMD_ERROR; start_tile = p1; RoadType rt = (RoadType)GB(p2, 3, 2); if (!IsValidRoadType(rt)) return CMD_ERROR; /* Only drag in X or Y direction dictated by the direction variable */ if (!HASBIT(p2, 2) && TileY(start_tile) != TileY(end_tile)) return CMD_ERROR; // x-axis if (HASBIT(p2, 2) && TileX(start_tile) != TileX(end_tile)) return CMD_ERROR; // y-axis /* Swap start and ending tile, also the half-tile drag var (bit 0 and 1) */ if (start_tile > end_tile || (start_tile == end_tile && HASBIT(p2, 0))) { TileIndex t = start_tile; start_tile = end_tile; end_tile = t; p2 ^= IS_INT_INSIDE(p2 & 3, 1, 3) ? 3 : 0; } cost = 0; tile = start_tile; /* Start tile is the small number. */ for (;;) { RoadBits bits = HASBIT(p2, 2) ? ROAD_Y : ROAD_X; if (tile == end_tile && !HASBIT(p2, 1)) bits &= ROAD_NW | ROAD_NE; if (tile == start_tile && HASBIT(p2, 0)) bits &= ROAD_SE | ROAD_SW; /* try to remove the halves. */ if (bits != 0) { ret = DoCommand(tile, rt << 4 | bits, 0, flags, CMD_REMOVE_ROAD); if (!CmdFailed(ret)) cost += ret; } if (tile == end_tile) break; tile += HASBIT(p2, 2) ? TileDiffXY(0, 1) : TileDiffXY(1, 0); } return (cost == 0) ? CMD_ERROR : cost; } /** Build a road depot. * @param tile tile where to build the depot * @param flags operation to perform * @param p1 bit 0..1 entrance direction (DiagDirection) * bit 2..3 road type * @param p2 unused * * @todo When checking for the tile slope, * distingush between "Flat land required" and "land sloped in wrong direction" */ int32 CmdBuildRoadDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) { int32 cost; Depot *dep; Slope tileh; SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); DiagDirection dir = Extract<DiagDirection, 0>(p1); RoadType rt = (RoadType)GB(p1, 2, 2); if (!IsValidRoadType(rt)) return CMD_ERROR; tileh = GetTileSlope(tile, NULL); if (tileh != SLOPE_FLAT && ( !_patches.build_on_slopes || IsSteepSlope(tileh) || !CanBuildDepotByTileh(dir, tileh) )) { return_cmd_error(STR_0007_FLAT_LAND_REQUIRED); } cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); if (CmdFailed(cost)) return CMD_ERROR; if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST); dep = AllocateDepot(); if (dep == NULL) return CMD_ERROR; if (flags & DC_EXEC) { dep->xy = tile; dep->town_index = ClosestTownFromTile(tile, (uint)-1)->index; MakeRoadDepot(tile, _current_player, dir, rt); MarkTileDirtyByTile(tile); } return cost + _price.build_road_depot; } static int32 RemoveRoadDepot(TileIndex tile, uint32 flags) { if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) return CMD_ERROR; if (!EnsureNoVehicle(tile)) return CMD_ERROR; if (flags & DC_EXEC) DeleteDepot(GetDepotByTile(tile)); return _price.remove_road_depot; } static int32 ClearTile_Road(TileIndex tile, byte flags) { switch (GetRoadTileType(tile)) { case ROAD_TILE_NORMAL: { RoadBits b = GetAllRoadBits(tile); #define M(x) (1 << (x)) /* Clear the road if only one piece is on the tile OR the AI tries * to clear town road OR we are not using the DC_AUTO flag */ if ((M(b) & (M(ROAD_NW) | M(ROAD_SW) | M(ROAD_SE) | M(ROAD_NE))) || ((flags & DC_AI_BUILDING) && IsTileOwner(tile, OWNER_TOWN)) || !(flags & DC_AUTO) ) { RoadTypes rts = GetRoadTypes(tile); int32 ret = 0; for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) { if (HASBIT(rts, rt)) { int32 tmp_ret = DoCommand(tile, rt << 4 | GetRoadBits(tile, rt), 0, flags, CMD_REMOVE_ROAD); if (CmdFailed(tmp_ret)) return tmp_ret; ret += tmp_ret; } } return ret; } return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST); } #undef M case ROAD_TILE_CROSSING: { RoadTypes rts = GetRoadTypes(tile); int32 ret = 0; if (flags & DC_AUTO) return_cmd_error(STR_1801_MUST_REMOVE_ROAD_FIRST); /* Must iterate over the roadtypes in a reverse manner because * tram tracks must be removed before the road bits. */ for (RoadType rt = ROADTYPE_HWAY; rt >= ROADTYPE_ROAD; rt--) { if (HASBIT(rts, rt)) { int32 tmp_ret = DoCommand(tile, 1 << 6 | rt << 4 | GetCrossingRoadBits(tile), 0, flags, CMD_REMOVE_ROAD); if (CmdFailed(tmp_ret)) return tmp_ret; ret += tmp_ret; } } if (flags & DC_EXEC) { DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); } return ret; } default: case ROAD_TILE_DEPOT: if (flags & DC_AUTO) { return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED); } return RemoveRoadDepot(tile, flags); } } struct DrawRoadTileStruct { uint16 image; byte subcoord_x; byte subcoord_y; }; #include "table/road_land.h" uint GetRoadFoundation(Slope tileh, RoadBits bits) { uint i; /* normal level sloped building */ if (!IsSteepSlope(tileh) && (~_valid_tileh_slopes_road[1][tileh] & bits) == 0) { return tileh; } /* inclined sloped building */ switch (bits) { case ROAD_X: i = 0; break; case ROAD_Y: i = 1; break; default: return 0; } switch (tileh) { case SLOPE_W: case SLOPE_STEEP_W: i += 0; break; case SLOPE_S: case SLOPE_STEEP_S: i += 2; break; case SLOPE_E: case SLOPE_STEEP_E: i += 4; break; case SLOPE_N: case SLOPE_STEEP_N: i += 6; break; default: return 0; } return i + 15; } const byte _road_sloped_sprites[14] = { 0, 0, 2, 0, 0, 1, 0, 0, 3, 0, 0, 0, 0, 0 }; /** * Whether to draw unpaved roads regardless of the town zone. * By default, OpenTTD always draws roads as unpaved if they are on a desert * tile or above the snowline. Newgrf files, however, can set a bit that allows * paved roads to be built on desert tiles as they would be on grassy tiles. * * @param tile The tile the road is on * @param roadside What sort of road this is * @return True if the road should be drawn unpaved regardless of the roadside. */ static bool AlwaysDrawUnpavedRoads(TileIndex tile, Roadside roadside) { return (IsOnSnow(tile) && !(_opt.landscape == LT_TROPIC && HasGrfMiscBit(GMB_DESERT_PAVED_ROADS) && roadside != ROADSIDE_BARREN && roadside != ROADSIDE_GRASS && roadside != ROADSIDE_GRASS_ROAD_WORKS)); } /** * Draws the catenary for the given tile * @param ti information about the tile (slopes, height etc) * @param tram the roadbits for the tram */ void DrawTramCatenary(TileInfo *ti, RoadBits tram) { /* Don't draw the catenary under a low bridge */ if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !HASBIT(_transparent_opt, TO_BUILDINGS)) { uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile)); if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return; } SpriteID front; SpriteID back; if (ti->tileh != SLOPE_FLAT) { back = SPR_TRAMWAY_BACK_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1]; front = SPR_TRAMWAY_FRONT_WIRES_SLOPED + _road_sloped_sprites[ti->tileh - 1]; } else { back = SPR_TRAMWAY_BASE + _road_backpole_sprites_1[tram]; front = SPR_TRAMWAY_BASE + _road_frontwire_sprites_1[tram]; } SpriteID pal = PAL_NONE; if (HASBIT(_transparent_opt, TO_BUILDINGS)) { SETBIT(front, PALETTE_MODIFIER_TRANSPARENT); SETBIT(back, PALETTE_MODIFIER_TRANSPARENT); pal = PALETTE_TO_TRANSPARENT; } AddSortableSpriteToDraw(back, pal, ti->x, ti->y, 16, 16, 0x1F, ti->z); AddSortableSpriteToDraw(front, pal, ti->x, ti->y, 16, 16, 0x1F, ti->z); } /** * Draws details on/around the road * @param img the sprite to draw * @param ti the tile to draw on * @param dx the offset from the top of the BB of the tile * @param dy the offset from the top of the BB of the tile * @param h the height of the sprite to draw */ static void DrawRoadDetail(SpriteID img, TileInfo *ti, int dx, int dy, int h) { int x = ti->x | dx; int y = ti->y | dy; byte z = ti->z; if (ti->tileh != SLOPE_FLAT) z = GetSlopeZ(x, y); AddSortableSpriteToDraw(img, PAL_NONE, x, y, 2, 2, h, z); } /** * Draw ground sprite and road pieces * @param ti TileInfo */ static void DrawRoadBits(TileInfo* ti) { RoadBits road = GetRoadBits(ti->tile, ROADTYPE_ROAD); RoadBits tram = GetRoadBits(ti->tile, ROADTYPE_TRAM); const DrawRoadTileStruct *drts; SpriteID image = 0; SpriteID pal = PAL_NONE; Roadside roadside; if (ti->tileh != SLOPE_FLAT) { int foundation = GetRoadFoundation(ti->tileh, road | tram); if (foundation != 0) DrawFoundation(ti, foundation); /* DrawFoundation() modifies ti. * Default sloped sprites.. */ if (ti->tileh != SLOPE_FLAT) image = _road_sloped_sprites[ti->tileh - 1] + 0x53F; } if (image == 0) image = _road_tile_sprites_1[road != ROAD_NONE ? road : tram]; roadside = GetRoadside(ti->tile); if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) { image += 19; } else { switch (roadside) { case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break; case ROADSIDE_GRASS: break; case ROADSIDE_GRASS_ROAD_WORKS: break; default: image -= 19; break; // Paved } } DrawGroundSprite(image, pal); if (road != ROAD_NONE) { DisallowedRoadDirections drd = GetDisallowedRoadDirections(ti->tile); if (drd != DRD_NONE) { DrawRoadDetail(SPR_ONEWAY_BASE + drd - 1 + ((road == ROAD_X) ? 0 : 3), ti, 8, 8, 0); } } /* For tram we overlay the road graphics with either tram tracks only * (when there is actual road beneath the trams) or with tram tracks * and some dirts which hides the road graphics */ if (tram != ROAD_NONE) { if (ti->tileh != SLOPE_FLAT) { image = _road_sloped_sprites[ti->tileh - 1] + SPR_TRAMWAY_SLOPED_OFFSET; } else { image = _road_tile_sprites_1[tram] - SPR_ROAD_Y; } image += (road == ROAD_NONE) ? SPR_TRAMWAY_TRAM : SPR_TRAMWAY_OVERLAY; DrawGroundSprite(image, pal); } if (HasRoadWorks(ti->tile)) { /* Road works */ DrawGroundSprite((road | tram) & ROAD_X ? SPR_EXCAVATION_X : SPR_EXCAVATION_Y, PAL_NONE); return; } if (tram != ROAD_NONE) DrawTramCatenary(ti, tram); /* Return if full detail is disabled, or we are zoomed fully out. */ if (!HASBIT(_display_opt, DO_FULL_DETAIL) || _cur_dpi->zoom > ZOOM_LVL_DETAIL) return; /* Draw extra details. */ for (drts = _road_display_table[roadside][road]; drts->image != 0; drts++) { DrawRoadDetail(drts->image, ti, drts->subcoord_x, drts->subcoord_y, 0x10); } } static void DrawTile_Road(TileInfo *ti) { switch (GetRoadTileType(ti->tile)) { case ROAD_TILE_NORMAL: DrawRoadBits(ti); break; case ROAD_TILE_CROSSING: { SpriteID image; SpriteID pal = PAL_NONE; Roadside roadside = GetRoadside(ti->tile); if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh); image = GetRailTypeInfo(GetRailType(ti->tile))->base_sprites.crossing; if (GetCrossingRoadAxis(ti->tile) == AXIS_X) image++; if (IsCrossingBarred(ti->tile)) image += 2; if (AlwaysDrawUnpavedRoads(ti->tile, roadside)) { image += 8; } else { switch (roadside) { case ROADSIDE_BARREN: pal = PALETTE_TO_BARE_LAND; break; case ROADSIDE_GRASS: break; default: image += 4; break; // Paved } } DrawGroundSprite(image, pal); if (HASBIT(GetRoadTypes(ti->tile), ROADTYPE_TRAM)) { DrawGroundSprite(SPR_TRAMWAY_OVERLAY + (GetCrossingRoadAxis(ti->tile) ^ 1), pal); DrawTramCatenary(ti, GetCrossingRoadBits(ti->tile)); } if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti); break; } default: case ROAD_TILE_DEPOT: { const DrawTileSprites* dts; const DrawTileSeqStruct* dtss; SpriteID palette; if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh); palette = PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile)); if (HASBIT(GetRoadTypes(ti->tile), ROADTYPE_TRAM)) { dts = &_tram_depot[GetRoadDepotDirection(ti->tile)]; } else { dts = &_road_depot[GetRoadDepotDirection(ti->tile)]; } DrawGroundSprite(dts->ground_sprite, PAL_NONE); for (dtss = dts->seq; dtss->image != 0; dtss++) { SpriteID image = dtss->image; SpriteID pal; if (HASBIT(_transparent_opt, TO_BUILDINGS)) { SETBIT(image, PALETTE_MODIFIER_TRANSPARENT); pal = PALETTE_TO_TRANSPARENT; } else if (HASBIT(image, PALETTE_MODIFIER_COLOR)) { pal = palette; } else { pal = PAL_NONE; } AddSortableSpriteToDraw( image, pal, ti->x + dtss->delta_x, ti->y + dtss->delta_y, dtss->size_x, dtss->size_y, dtss->size_z, ti->z ); } break; } } DrawBridgeMiddle(ti); } void DrawRoadDepotSprite(int x, int y, DiagDirection dir, RoadType rt) { SpriteID palette = PLAYER_SPRITE_COLOR(_local_player); const DrawTileSprites* dts = (rt == ROADTYPE_TRAM) ? &_tram_depot[dir] : &_road_depot[dir]; const DrawTileSeqStruct* dtss; x += 33; y += 17; DrawSprite(dts->ground_sprite, PAL_NONE, x, y); for (dtss = dts->seq; dtss->image != 0; dtss++) { Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z); SpriteID image = dtss->image; DrawSprite(image, HASBIT(image, PALETTE_MODIFIER_COLOR) ? palette : PAL_NONE, x + pt.x, y + pt.y); } } static uint GetSlopeZ_Road(TileIndex tile, uint x, uint y) { uint z; Slope tileh = GetTileSlope(tile, &z); if (tileh == SLOPE_FLAT) return z; if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) { uint f = GetRoadFoundation(tileh, GetAllRoadBits(tile)); if (f != 0) { if (IsSteepSlope(tileh)) { z += TILE_HEIGHT; } else if (f < 15) { return z + TILE_HEIGHT; // leveled foundation } tileh = _inclined_tileh[f - 15]; // inclined foundation } return z + GetPartialZ(x & 0xF, y & 0xF, tileh); } else { return z + TILE_HEIGHT; } } static Slope GetSlopeTileh_Road(TileIndex tile, Slope tileh) { if (tileh == SLOPE_FLAT) return SLOPE_FLAT; if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) { uint f = GetRoadFoundation(tileh, GetAllRoadBits(tile)); if (f == 0) return tileh; if (f < 15) return SLOPE_FLAT; // leveled foundation return _inclined_tileh[f - 15]; // inclined foundation } else { return SLOPE_FLAT; } } static void GetAcceptedCargo_Road(TileIndex tile, AcceptedCargo ac) { /* not used */ } static void AnimateTile_Road(TileIndex tile) { if (IsLevelCrossing(tile)) MarkTileDirtyByTile(tile); } static const Roadside _town_road_types[][2] = { { ROADSIDE_GRASS, ROADSIDE_GRASS }, { ROADSIDE_PAVED, ROADSIDE_PAVED }, { ROADSIDE_PAVED, ROADSIDE_PAVED }, { ROADSIDE_TREES, ROADSIDE_TREES }, { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED } }; static const Roadside _town_road_types_2[][2] = { { ROADSIDE_GRASS, ROADSIDE_GRASS }, { ROADSIDE_PAVED, ROADSIDE_PAVED }, { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }, { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED }, { ROADSIDE_STREET_LIGHTS, ROADSIDE_PAVED } }; static void TileLoop_Road(TileIndex tile) { switch (_opt.landscape) { case LT_ARCTIC: if (IsOnSnow(tile) != (GetTileZ(tile) > GetSnowLine())) { ToggleSnow(tile); MarkTileDirtyByTile(tile); } break; case LT_TROPIC: if (GetTropicZone(tile) == TROPICZONE_DESERT && !IsOnDesert(tile)) { ToggleDesert(tile); MarkTileDirtyByTile(tile); } break; } if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) return; if (!HasRoadWorks(tile)) { const Town* t = ClosestTownFromTile(tile, (uint)-1); int grp = 0; if (t != NULL) { grp = GetTownRadiusGroup(t, tile); /* Show an animation to indicate road work */ if (t->road_build_months != 0 && (DistanceManhattan(t->xy, tile) < 8 || grp != 0) && GetRoadTileType(tile) == ROAD_TILE_NORMAL && (GetAllRoadBits(tile) == ROAD_X || GetAllRoadBits(tile) == ROAD_Y)) { if (GetTileSlope(tile, NULL) == SLOPE_FLAT && EnsureNoVehicleOnGround(tile) && CHANCE16(1, 20)) { StartRoadWorks(tile); SndPlayTileFx(SND_21_JACKHAMMER, tile); CreateEffectVehicleAbove( TileX(tile) * TILE_SIZE + 7, TileY(tile) * TILE_SIZE + 7, 0, EV_BULLDOZER); MarkTileDirtyByTile(tile); return; } } } { /* Adjust road ground type depending on 'grp' (grp is the distance to the center) */ const Roadside* new_rs = (_opt.landscape == LT_TOYLAND) ? _town_road_types_2[grp] : _town_road_types[grp]; Roadside cur_rs = GetRoadside(tile); /* We have our desired type, do nothing */ if (cur_rs == new_rs[0]) return; /* We have the pre-type of the desired type, switch to the desired type */ if (cur_rs == new_rs[1]) { cur_rs = new_rs[0]; /* We have barren land, install the pre-type */ } else if (cur_rs == ROADSIDE_BARREN) { cur_rs = new_rs[1]; /* We're totally off limits, remove any installation and make barren land */ } else { cur_rs = ROADSIDE_BARREN; } SetRoadside(tile, cur_rs); MarkTileDirtyByTile(tile); } } else if (IncreaseRoadWorksCounter(tile)) { TerminateRoadWorks(tile); MarkTileDirtyByTile(tile); } } static void ClickTile_Road(TileIndex tile) { if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) ShowDepotWindow(tile, VEH_ROAD); } static const byte _road_trackbits[16] = { 0x0, 0x0, 0x0, 0x10, 0x0, 0x2, 0x8, 0x1A, 0x0, 0x4, 0x1, 0x15, 0x20, 0x26, 0x29, 0x3F, }; static uint32 GetTileTrackStatus_Road(TileIndex tile, TransportType mode, uint sub_mode) { switch (mode) { case TRANSPORT_RAIL: if (!IsLevelCrossing(tile)) return 0; return GetCrossingRailBits(tile) * 0x101; case TRANSPORT_ROAD: if ((GetRoadTypes(tile) & sub_mode) == 0) return 0; switch (GetRoadTileType(tile)) { case ROAD_TILE_NORMAL: { RoadType rt = (RoadType)FindFirstBit(sub_mode); const uint drd_to_multiplier[DRD_END] = { 0x101, 0x100, 0x1, 0x0 }; uint multiplier = drd_to_multiplier[rt == ROADTYPE_TRAM ? DRD_NONE : GetDisallowedRoadDirections(tile)]; return HasRoadWorks(tile) ? 0 : _road_trackbits[GetRoadBits(tile, rt)] * multiplier; } case ROAD_TILE_CROSSING: { uint32 r = AxisToTrackBits(GetCrossingRoadAxis(tile)) * 0x101; if (IsCrossingBarred(tile)) r *= 0x10001; return r; } default: case ROAD_TILE_DEPOT: return AxisToTrackBits(DiagDirToAxis(GetRoadDepotDirection(tile))) * 0x101; } break; default: break; } return 0; } static const StringID _road_tile_strings[] = { STR_1814_ROAD, STR_1814_ROAD, STR_1814_ROAD, STR_1815_ROAD_WITH_STREETLIGHTS, STR_1814_ROAD, STR_1816_TREE_LINED_ROAD, STR_1814_ROAD, STR_1814_ROAD, }; static void GetTileDesc_Road(TileIndex tile, TileDesc *td) { td->owner = GetTileOwner(tile); switch (GetRoadTileType(tile)) { case ROAD_TILE_CROSSING: td->str = STR_1818_ROAD_RAIL_LEVEL_CROSSING; break; case ROAD_TILE_DEPOT: td->str = STR_1817_ROAD_VEHICLE_DEPOT; break; default: td->str = _road_tile_strings[GetRoadside(tile)]; break; } } /** * Given the direction the road depot is pointing, this is the direction the * vehicle should be travelling in in order to enter the depot. */ static const byte _roadveh_enter_depot_dir[4] = { TRACKDIR_X_SW, TRACKDIR_Y_NW, TRACKDIR_X_NE, TRACKDIR_Y_SE }; static uint32 VehicleEnter_Road(Vehicle *v, TileIndex tile, int x, int y) { switch (GetRoadTileType(tile)) { case ROAD_TILE_CROSSING: if (v->type == VEH_TRAIN && !IsCrossingBarred(tile)) { /* train crossing a road */ SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v); BarCrossing(tile); MarkTileDirtyByTile(tile); } break; case ROAD_TILE_DEPOT: if (v->type == VEH_ROAD && v->u.road.frame == 11 && _roadveh_enter_depot_dir[GetRoadDepotDirection(tile)] == v->u.road.state) { v->u.road.state = RVSB_IN_DEPOT; v->vehstatus |= VS_HIDDEN; v->direction = ReverseDir(v->direction); if (v->next == NULL) VehicleEnterDepot(v); v->tile = tile; InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile); return VETSB_ENTERED_WORMHOLE; } break; default: break; } return VETSB_CONTINUE; } static void ChangeTileOwner_Road(TileIndex tile, PlayerID old_player, PlayerID new_player) { if (GetRoadTileType(tile) == ROAD_TILE_DEPOT) { if (GetTileOwner(tile) == old_player) { if (new_player == PLAYER_SPECTATOR) { DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR); } else { SetTileOwner(tile, new_player); } } return; } for (RoadType rt = ROADTYPE_ROAD; rt < ROADTYPE_END; rt++) { if (!HASBIT(GetRoadTypes(tile), rt)) continue; if (GetRoadOwner(tile, rt) == old_player) { SetRoadOwner(tile, rt, new_player == PLAYER_SPECTATOR ? OWNER_NONE : new_player); } } if (IsLevelCrossing(tile)) { if (GetTileOwner(tile) == old_player) { if (new_player == PLAYER_SPECTATOR) { MakeRoadNormal(tile, GetCrossingRoadBits(tile), GetRoadTypes(tile), GetTownIndex(tile), GetRoadOwner(tile, ROADTYPE_ROAD), GetRoadOwner(tile, ROADTYPE_TRAM), GetRoadOwner(tile, ROADTYPE_HWAY)); } else { SetTileOwner(tile, new_player); } } } } extern const TileTypeProcs _tile_type_road_procs = { DrawTile_Road, /* draw_tile_proc */ GetSlopeZ_Road, /* get_slope_z_proc */ ClearTile_Road, /* clear_tile_proc */ GetAcceptedCargo_Road, /* get_accepted_cargo_proc */ GetTileDesc_Road, /* get_tile_desc_proc */ GetTileTrackStatus_Road, /* get_tile_track_status_proc */ ClickTile_Road, /* click_tile_proc */ AnimateTile_Road, /* animate_tile_proc */ TileLoop_Road, /* tile_loop_clear */ ChangeTileOwner_Road, /* change_tile_owner_clear */ NULL, /* get_produced_cargo_proc */ VehicleEnter_Road, /* vehicle_enter_tile_proc */ GetSlopeTileh_Road, /* get_slope_tileh_proc */ };