mirror of https://github.com/OpenTTD/OpenTTD.git
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
#ifndef AIRPORT_H
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#define AIRPORT_H
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#include "airport_movement.h"
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enum {MAX_TERMINALS = 6};
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enum {MAX_HELIPADS = 2};
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// Airport types
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enum {
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AT_SMALL = 0,
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AT_LARGE = 1,
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AT_HELIPORT = 2,
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AT_METROPOLITAN = 3,
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AT_INTERNATIONAL = 4,
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AT_OILRIG = 15
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};
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// do not change unless you change v->subtype too. This aligns perfectly with its current setting
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enum {
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AIRCRAFT_ONLY = 0,
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ALL = 1,
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HELICOPTERS_ONLY = 2
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};
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// Finite sTate mAchine --> FTA
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typedef struct AirportFTAClass {
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byte nofelements; // number of positions the airport consists of
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const byte *terminals;
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const byte *helipads;
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byte entry_point; // when an airplane arrives at this airport, enter it at position entry_point
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byte acc_planes; // accept airplanes or helicopters or both
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const TileIndexDiffC *airport_depots; // gives the position of the depots on the airports
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byte nof_depots; // number of depots this airport has
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struct AirportFTA *layout; // state machine for airport
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} AirportFTAClass;
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// internal structure used in openttd - Finite sTate mAchine --> FTA
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typedef struct AirportFTA {
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byte position; // the position that an airplane is at
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byte next_position; // next position from this position
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uint32 block; // 32 bit blocks (st->airport_flags), should be enough for the most complex airports
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byte heading; // heading (current orders), guiding an airplane to its target on an airport
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struct AirportFTA *next_in_chain; // possible extra movement choices from this position
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} AirportFTA;
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void InitializeAirports(void);
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void UnInitializeAirports(void);
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const AirportFTAClass* GetAirport(const byte airport_type);
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/** Get buildable airport bitmask.
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* @return get all buildable airports at this given time, bitmasked.
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* Bit 0 means the small airport is buildable, etc.
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* @todo set availability of airports by year, instead of airplane
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*/
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static inline uint32 GetValidAirports(void)
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{
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uint32 bytemask = _avail_aircraft; /// sets the first 3 bytes, 0 - 2, @see AdjustAvailAircraft()
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// 1980-1-1 is --> 21915
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// 1990-1-1 is --> 25568
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if (_date >= 21915) {SETBIT(bytemask, 3);} // metropilitan airport 1980
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if (_date >= 25568) {SETBIT(bytemask, 4);} // international airport 1990
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return bytemask;
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}
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#endif /* AIRPORT_H */
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