# ai_airport.cpp

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    00001 /* $Id: ai_airport.cpp 17598 2009-09-21 15:41:58Z rubidium $ */
    00002
    00005 #include "ai_airport.hpp"
    00006 #include "ai_station.hpp"
    00007 #include "../../station_map.h"
    00008 #include "../../company_func.h"
    00009 #include "../../command_type.h"
    00010 #include "../../town.h"
    00011 #include "../../economy_func.h"
    00012
    00013 /* static */ bool AIAirport::IsValidAirportType(AirportType type)
    00014 {
    00015   return IsAirportInformationAvailable(type) && HasBit(::GetValidAirports(), type);
    00016 }
    00017
    00018 /* static */ bool AIAirport::IsAirportInformationAvailable(AirportType type)
    00019 {
    00020   return type >= 0 && type <= AT_HELISTATION;
    00021 }
    00022
    00023 /* static */ Money AIAirport::GetPrice(AirportType type)
    00024 {
    00025   if (!IsValidAirportType(type)) return -1;
    00026
    00027   const AirportFTAClass *afc = ::GetAirport(type);
    00028   return _price.build_airport * afc->size_x * afc->size_y;
    00029 }
    00030
    00031 /* static */ bool AIAirport::IsHangarTile(TileIndex tile)
    00032 {
    00033   if (!::IsValidTile(tile)) return false;
    00034
    00035   return ::IsTileType(tile, MP_STATION) && ::IsHangar(tile);
    00036 }
    00037
    00038 /* static */ bool AIAirport::IsAirportTile(TileIndex tile)
    00039 {
    00040   if (!::IsValidTile(tile)) return false;
    00041
    00042   return ::IsTileType(tile, MP_STATION) && ::IsAirport(tile);
    00043 }
    00044
    00045 /* static */ int32 AIAirport::GetAirportWidth(AirportType type)
    00046 {
    00047   if (!IsAirportInformationAvailable(type)) return -1;
    00048
    00049   return ::GetAirport(type)->size_x;
    00050 }
    00051
    00052 /* static */ int32 AIAirport::GetAirportHeight(AirportType type)
    00053 {
    00054   if (!IsAirportInformationAvailable(type)) return -1;
    00055
    00056   return ::GetAirport(type)->size_y;
    00057 }
    00058
    00059 /* static */ int32 AIAirport::GetAirportCoverageRadius(AirportType type)
    00060 {
    00061   if (!IsAirportInformationAvailable(type)) return -1;
    00062
    00063   return _settings_game.station.modified_catchment ? ::GetAirport(type)->catchment : (uint)CA_UNMODIFIED;
    00064 }
    00065
    00066 /* static */ bool AIAirport::BuildAirport(TileIndex tile, AirportType type, StationID station_id)
    00067 {
    00068   EnforcePrecondition(false, ::IsValidTile(tile));
    00069   EnforcePrecondition(false, IsValidAirportType(type));
    00070   EnforcePrecondition(false, station_id == AIStation::STATION_NEW || station_id == AIStation::STATION_JOIN_ADJACENT || AIStation::IsValidStation(station_id));
    00071
    00072   uint p2 = station_id == AIStation::STATION_JOIN_ADJACENT ? 0 : 1;
    00073   p2 |= (AIStation::IsValidStation(station_id) ? station_id : INVALID_STATION) << 16;
    00074   return AIObject::DoCommand(tile, type, p2, CMD_BUILD_AIRPORT);
    00075 }
    00076
    00077 /* static */ bool AIAirport::RemoveAirport(TileIndex tile)
    00078 {
    00079   EnforcePrecondition(false, ::IsValidTile(tile))
    00080   EnforcePrecondition(false, IsAirportTile(tile) || IsHangarTile(tile));
    00081
    00082   return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
    00083 }
    00084
    00085 /* static */ int32 AIAirport::GetNumHangars(TileIndex tile)
    00086 {
    00087   if (!::IsValidTile(tile)) return -1;
    00088   if (!::IsTileType(tile, MP_STATION)) return -1;
    00089
    00090   const Station *st = ::GetStationByTile(tile);
    00091   if (st->owner != _current_company) return -1;
    00092   if ((st->facilities & FACIL_AIRPORT) == 0) return -1;
    00093
    00094   return st->Airport()->nof_depots;
    00095 }
    00096
    00097 /* static */ TileIndex AIAirport::GetHangarOfAirport(TileIndex tile)
    00098 {
    00099   if (!::IsValidTile(tile)) return INVALID_TILE;
    00100   if (!::IsTileType(tile, MP_STATION)) return INVALID_TILE;
    00101   if (GetNumHangars(tile) < 1) return INVALID_TILE;
    00102
    00103   const Station *st = ::GetStationByTile(tile);
    00104   if (st->owner != _current_company) return INVALID_TILE;
    00105   if ((st->facilities & FACIL_AIRPORT) == 0) return INVALID_TILE;
    00106
    00107   return ::ToTileIndexDiff(st->Airport()->airport_depots[0]) + st->airport_tile;
    00108 }
    00109
    00110 /* static */ AIAirport::AirportType AIAirport::GetAirportType(TileIndex tile)
    00111 {
    00112   if (!AITile::IsStationTile(tile)) return AT_INVALID;
    00113
    00114   StationID station_id = ::GetStationIndex(tile);
    00115
    00116   if (!AIStation::HasStationType(station_id, AIStation::STATION_AIRPORT)) return AT_INVALID;
    00117
    00118   return (AirportType)::GetStation(station_id)->airport_type;
    00119 }
    00120
    00121
    00122 /* static */ int AIAirport::GetNoiseLevelIncrease(TileIndex tile, AirportType type)
    00123 {
    00124   extern Town *AirportGetNearestTown(const AirportFTAClass *afc, TileIndex airport_tile);
    00125   extern uint8 GetAirportNoiseLevelForTown(const AirportFTAClass *afc, TileIndex town_tile, TileIndex tile);
    00126
    00127   if (!::IsValidTile(tile)) return -1;
    00128   if (!IsValidAirportType(type)) return -1;
    00129
    00130   if (_settings_game.economy.station_noise_level) {
    00131     const AirportFTAClass *afc = ::GetAirport(type);
    00132     const Town *t = AirportGetNearestTown(afc, tile);
    00133     return GetAirportNoiseLevelForTown(afc, t->xy, tile);
    00134   }
    00135
    00136   return 1;
    00137 }
    00138
    00139 /* static */ TownID AIAirport::GetNearestTown(TileIndex tile, AirportType type)
    00140 {
    00141   extern Town *AirportGetNearestTown(const AirportFTAClass *afc, TileIndex airport_tile);
    00142
    00143   if (!::IsValidTile(tile)) return INVALID_TOWN;
    00144   if (!IsAirportInformationAvailable(type)) return INVALID_TOWN;
    00145
    00146   return AirportGetNearestTown(GetAirport(type), tile)->index;
    00147 }