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/* $Id$ */
/*
* 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.
TERMGROUP = 255, ///< Aircraft is looking for a free terminal in a terminalgroup.
};
/** 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.
Direction 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 */
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