1 /* $Id$ */

     2 

     3 #include "ai_airport.hpp"

     4 #include "../../command.h"

     5 #include "../../station_map.h"

     6 

     7 

     8 bool AIAirport::IsHangarTile(TileIndex tile)

     9 {

    10 	/* Outside of the map */

    11 	if (tile >= ::MapSize()) return false;

    12 

    13 	return ::IsTileType(tile, MP_STATION) && ::IsHangar(tile);

    14 }

    15 

    16 bool AIAirport::IsAirportTile(TileIndex tile)

    17 {

    18 	/* Outside of the map */

    19 	if (tile >= ::MapSize()) return false;

    20 

    21 	return ::IsTileType(tile, MP_STATION) && ::IsAirport(tile);

    22 }

    23 

    24 bool AIAirport::AiportAvailable(AirportType type)

    25 {

    26 	/* Small airport is always available */

    27 	if (type == AT_SMALL) return true;

    28 	/* The rest has to be looked up */

    29 	return HASBIT(::GetValidAirports(), type);

    30 }

    31 

    32 bool AIAirport::BuildAirport(TileIndex tile, AirportType type)

    33 {

    34 	/* Outside of the map */

    35 	if (tile >= ::MapSize()) return false;

    36 

    37 	return this->DoCommand(tile, type, 0, CMD_BUILD_AIRPORT);

    38 }

    39 

    40 bool AIAirport::RemoveAirport(TileIndex tile)

    41 {

    42 	/* Outside of the map */

    43 	if (tile >= ::MapSize()) return false;

    44 

    45 	/* Not a airport tile */

    46 	if (!IsAirportTile(tile) && !IsHangarTile(tile)) return false;

    47 

    48 	return this->DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);

    49 }

    50 

    51 TileIndex AIAirport::GetHangarOfAirport(TileIndex tile)

    52 {

    53 	if (!IsTileType(tile, MP_STATION)) return INVALID_TILE;

    54 

    55 	const Station *st = GetStationByTile(tile);

    56 	if (st->owner != _current_player) return INVALID_TILE;

    57 

    58 	return ToTileIndexDiff(st->Airport()->airport_depots[0]) + st->xy;

    59 }