/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file airport.h Various declarations for airports */ #ifndef AIRPORT_H #define AIRPORT_H #include "direction_type.h" #include "tile_type.h" /** Some airport-related constants */ static const uint MAX_TERMINALS = 8; ///< maximum number of terminals per airport static const uint MAX_HELIPADS = 3; ///< maximum number of helipads per airport static const uint MAX_ELEMENTS = 255; ///< maximum number of aircraft positions at airport static const uint NUM_AIRPORTTILES_PER_GRF = 255; ///< Number of airport tiles per NewGRF; limited to 255 to allow extending Action3 with an extended byte later on. static const uint NUM_AIRPORTTILES = 256; ///< Total number of airport tiles. static const uint NEW_AIRPORTTILE_OFFSET = 74; ///< offset of first newgrf airport tile static const uint INVALID_AIRPORTTILE = NUM_AIRPORTTILES; ///< id for an invalid airport tile /** Airport types */ enum AirportTypes { AT_SMALL = 0, ///< Small airport. AT_LARGE = 1, ///< Large airport. AT_HELIPORT = 2, ///< Heli port. AT_METROPOLITAN = 3, ///< Metropolitan airport. AT_INTERNATIONAL = 4, ///< International airport. AT_COMMUTER = 5, ///< Commuter airport. AT_HELIDEPOT = 6, ///< Heli depot. AT_INTERCON = 7, ///< Intercontinental airport. AT_HELISTATION = 8, ///< Heli station airport. AT_OILRIG = 9, ///< Oilrig airport. NEW_AIRPORT_OFFSET = 10, ///< Number of the first newgrf airport. NUM_AIRPORTS_PER_GRF = 128, ///< Maximal number of airports per NewGRF. NUM_AIRPORTS = 128, ///< Maximal number of airports in total. AT_INVALID = 254, ///< Invalid airport. AT_DUMMY = 255, ///< Dummy airport. }; /** Flags for airport movement data. */ enum AirportMovingDataFlags { AMED_NOSPDCLAMP = 1 << 0, ///< No speed restrictions. AMED_TAKEOFF = 1 << 1, ///< Takeoff movement. AMED_SLOWTURN = 1 << 2, ///< Turn slowly (mostly used in the air). AMED_LAND = 1 << 3, ///< Landing onto landing strip. AMED_EXACTPOS = 1 << 4, ///< Go exactly to the destination coordinates. AMED_BRAKE = 1 << 5, ///< Taxiing at the airport. AMED_HELI_RAISE = 1 << 6, ///< Helicopter take-off. AMED_HELI_LOWER = 1 << 7, ///< Helicopter landing. AMED_HOLD = 1 << 8, ///< Holding pattern movement (above the airport). }; /** Movement States on Airports (headings target) */ enum AirportMovementStates { TO_ALL = 0, ///< Go in this direction for every target. HANGAR = 1, ///< Heading for hangar. TERM1 = 2, ///< Heading for terminal 1. TERM2 = 3, ///< Heading for terminal 2. TERM3 = 4, ///< Heading for terminal 3. TERM4 = 5, ///< Heading for terminal 4. TERM5 = 6, ///< Heading for terminal 5. TERM6 = 7, ///< Heading for terminal 6. HELIPAD1 = 8, ///< Heading for helipad 1. HELIPAD2 = 9, ///< Heading for helipad 2. TAKEOFF = 10, ///< Airplane wants to leave the airport. STARTTAKEOFF = 11, ///< Airplane has arrived at a runway for take-off. ENDTAKEOFF = 12, ///< Airplane has reached end-point of the take-off runway. HELITAKEOFF = 13, ///< Helicopter wants to leave the airport. FLYING = 14, ///< %Vehicle is flying in the air. LANDING = 15, ///< Airplane wants to land. ENDLANDING = 16, ///< Airplane wants to finish landing. HELILANDING = 17, ///< Helicopter wants to land. HELIENDLANDING = 18, ///< Helicopter wants to finish landing. TERM7 = 19, ///< Heading for terminal 7. TERM8 = 20, ///< Heading for terminal 8. HELIPAD3 = 21, ///< Heading for helipad 3. MAX_HEADINGS = 21, ///< Last valid target to head for. }; /** Movement Blocks on Airports blocks (eg_airport_flags). */ static const uint64 TERM1_block = 1ULL << 0, ///< Block belonging to terminal 1. TERM2_block = 1ULL << 1, ///< Block belonging to terminal 2. TERM3_block = 1ULL << 2, ///< Block belonging to terminal 3. TERM4_block = 1ULL << 3, ///< Block belonging to terminal 4. TERM5_block = 1ULL << 4, ///< Block belonging to terminal 5. TERM6_block = 1ULL << 5, ///< Block belonging to terminal 6. HELIPAD1_block = 1ULL << 6, ///< Block belonging to helipad 1. HELIPAD2_block = 1ULL << 7, ///< Block belonging to helipad 2. RUNWAY_IN_OUT_block = 1ULL << 8, RUNWAY_IN_block = 1ULL << 8, AIRPORT_BUSY_block = 1ULL << 8, RUNWAY_OUT_block = 1ULL << 9, TAXIWAY_BUSY_block = 1ULL << 10, OUT_WAY_block = 1ULL << 11, IN_WAY_block = 1ULL << 12, AIRPORT_ENTRANCE_block = 1ULL << 13, TERM_GROUP1_block = 1ULL << 14, TERM_GROUP2_block = 1ULL << 15, HANGAR2_AREA_block = 1ULL << 16, TERM_GROUP2_ENTER1_block = 1ULL << 17, TERM_GROUP2_ENTER2_block = 1ULL << 18, TERM_GROUP2_EXIT1_block = 1ULL << 19, TERM_GROUP2_EXIT2_block = 1ULL << 20, PRE_HELIPAD_block = 1ULL << 21, /* blocks for new airports */ TERM7_block = 1ULL << 22, ///< Block belonging to terminal 7. TERM8_block = 1ULL << 23, ///< Block belonging to terminal 8. HELIPAD3_block = 1ULL << 24, ///< Block belonging to helipad 3. HANGAR1_AREA_block = 1ULL << 26, OUT_WAY2_block = 1ULL << 27, IN_WAY2_block = 1ULL << 28, RUNWAY_IN2_block = 1ULL << 29, RUNWAY_OUT2_block = 1ULL << 10, ///< @note re-uses #TAXIWAY_BUSY_block HELIPAD_GROUP_block = 1ULL << 13, ///< @note re-uses #AIRPORT_ENTRANCE_block OUT_WAY_block2 = 1ULL << 31, /* end of new blocks */ NOTHING_block = 1ULL << 30, AIRPORT_CLOSED_block = 1ULL << 63; ///< Dummy block for indicating a closed airport. /** A single location on an airport where aircraft can move to. */ struct AirportMovingData { int16 x; ///< x-coordinate of the destination. int16 y; ///< y-coordinate of the destination. uint16 flag; ///< special flags when moving towards the destination. DirectionByte direction; ///< Direction to turn the aircraft after reaching the destination. }; AirportMovingData RotateAirportMovingData(const AirportMovingData *orig, Direction rotation, uint num_tiles_x, uint num_tiles_y); struct AirportFTAbuildup; /** Finite sTate mAchine (FTA) of an airport. */ struct AirportFTAClass { public: /** Bitmask of airport flags. */ enum Flags { AIRPLANES = 0x1, ///< Can planes land on this airport type? HELICOPTERS = 0x2, ///< Can helicopters land on this airport type? ALL = AIRPLANES | HELICOPTERS, ///< Mask to check for both planes and helicopters. SHORT_STRIP = 0x4, ///< This airport has a short landing strip, dangerous for fast aircraft. }; AirportFTAClass( const AirportMovingData *moving_data, const byte *terminals, const byte num_helipads, const byte *entry_points, Flags flags, const AirportFTAbuildup *apFA, byte delta_z ); ~AirportFTAClass(); /** * Get movement data at a position. * @param position Element number to get movement data about. * @return Pointer to the movement data. */ const AirportMovingData *MovingData(byte position) const { assert(position < nofelements); return &moving_data[position]; } const AirportMovingData *moving_data; ///< Movement data. struct AirportFTA *layout; ///< state machine for airport const byte *terminals; ///< %Array with the number of terminal groups, followed by the number of terminals in each group. const byte num_helipads; ///< Number of helipads on this airport. When 0 helicopters will go to normal terminals. Flags flags; ///< Flags for this airport type. byte nofelements; ///< number of positions the airport consists of const byte *entry_points; ///< when an airplane arrives at this airport, enter it at position entry_point, index depends on direction byte delta_z; ///< Z adjustment for helicopter pads }; DECLARE_ENUM_AS_BIT_SET(AirportFTAClass::Flags) /** Internal structure used in openttd - Finite sTate mAchine --> FTA */ struct AirportFTA { AirportFTA *next; ///< possible extra movement choices from this position uint64 block; ///< 64 bit blocks (st->airport.flags), should be enough for the most complex airports byte position; ///< the position that an airplane is at byte next_position; ///< next position from this position byte heading; ///< heading (current orders), guiding an airplane to its target on an airport }; const AirportFTAClass *GetAirport(const byte airport_type); byte GetVehiclePosOnBuild(TileIndex hangar_tile); #endif /* AIRPORT_H */