enum tower_traffic_type {
CIRCUIT,
- INBOUND,
+ INBOUND, // CIRCUIT traffic gets changed to INBOUND when on final of the full-stop circuit.
OUTBOUND,
TTT_UNKNOWN, // departure, but we don't know if for circuits or leaving properly
STRAIGHT_IN
- // Umm - what's the difference between INBOUND and STRAIGHT_IN ?
};
+ostream& operator << (ostream& os, tower_traffic_type ttt);
+
+enum tower_callback_type {
+ USER_REQUEST_VFR_DEPARTURE = 1,
+ USER_REQUEST_VFR_ARRIVAL = 2,
+ USER_REQUEST_VFR_ARRIVAL_FULL_STOP = 3,
+ USER_REQUEST_VFR_ARRIVAL_TOUCH_AND_GO = 4,
+ USER_REPORT_3_MILE_FINAL = 5,
+ USER_REPORT_DOWNWIND = 6,
+ USER_REPORT_RWY_VACATED = 7,
+ USER_REPORT_GOING_AROUND = 8
+};
+
+// TODO - need some differentiation of IFR and VFR traffic in order to give the former priority.
+
// Structure for holding details of a plane under tower control.
// Not fixed yet - may include more stuff later.
class TowerPlaneRec {
bool clearedToTakeOff;
// ought to add time cleared to depart so we can nag if necessary
bool holdShortReported;
+ bool downwindReported;
bool longFinalReported;
bool longFinalAcknowledged;
bool finalReported;
bool finalAcknowledged;
+ bool rwyVacatedReported;
+ bool rwyVacatedAcknowledged;
+ bool goAroundReported; // set true if plane informs tower that it's going around.
+ bool instructedToGoAround; // set true if plane told by tower to go around.
bool onRwy; // is physically on the runway
bool nextOnRwy; // currently projected by tower to be the next on the runway
-
- double clearanceCounter; // Hack for communication timing - counter since clearance requested in seconds
+ bool vfrArrivalReported;
+ bool vfrArrivalAcknowledged;
+
// Type of operation the plane is doing
tower_traffic_type opType;
// Whereabouts in circuit if doing circuits
PatternLeg leg;
+ LandingType landingType;
+
bool isUser; // true if this plane is the user
};
void Init();
void Update(double dt);
+
+ void ReceiveUserCallback(int code);
- void RequestLandingClearance(string ID);
+ // Contact tower for VFR approach
+ // eg "Cessna Charlie Foxtrot Golf Foxtrot Sierra eight miles South of the airport for full stop with Bravo"
+ // This function probably only called via user interaction - AI planes will have an overloaded function taking a planerec.
+ void VFRArrivalContact(string ID, LandingType opt = AIP_LT_UNKNOWN);
+ // For the AI planes...
+ void VFRArrivalContact(PlaneRec plane, FGAIPlane* requestee, LandingType lt = AIP_LT_UNKNOWN);
+
void RequestDepartureClearance(string ID);
void ReportFinal(string ID);
void ReportLongFinal(string ID);
void ReportOuterMarker(string ID);
void ReportMiddleMarker(string ID);
void ReportInnerMarker(string ID);
- void ReportGoingAround(string ID);
void ReportRunwayVacated(string ID);
void ReportReadyForDeparture(string ID);
+ void ReportDownwind(string ID);
+ void ReportGoingAround(string ID);
// Contact tower when at a hold short for departure - for now we'll assume plane - maybe vehicles might want to cross runway eventually?
void ContactAtHoldShort(PlaneRec plane, FGAIPlane* requestee, tower_traffic_type operation);
+ // Register the presence of an AI plane at a point where contact would already have been made in real life
+ // CAUTION - currently it is assumed that this plane's callsign is unique - it is up to AIMgr to generate unique callsigns.
+ void RegisterAIPlane(PlaneRec plane, FGAIPlane* ai, tower_traffic_type op, PatternLeg lg = LEG_UNKNOWN);
+
+ // Deregister and remove an AI plane.
+ void DeregisterAIPlane(string id);
+
// Public interface to the active runway - this will get more complex
// in the future and consider multi-runway use, airplane weight etc.
inline string GetActiveRunway() { return activeRwy; }
inline RunwayDetails GetActiveRunwayDetails() { return rwy; }
-
- inline void SetDisplay() { display = true; }
- inline void SetNoDisplay() { display = false; }
+ // Get the pattern direction of the active rwy.
+ inline int GetPatternDirection() { return rwy.patternDirection; }
inline string get_trans_ident() { return trans_ident; }
- inline atc_type GetType() { return TOWER; }
inline FGGround* GetGroundPtr() { return ground; }
+
+ // Returns true if positions of crosswind/downwind/base leg turns should be constrained by previous traffic
+ // plus the constraint position as a rwy orientated orthopos (meters)
+ bool GetCrosswindConstraint(double& cpos);
+ bool GetDownwindConstraint(double& dpos);
+ bool GetBaseConstraint(double& bpos);
+
+ string GenText(const string& m, int c);
private:
FGATCMgr* ATCmgr;
// This is purely for synactic convienience to avoid writing globals->get_ATC_mgr()-> all through the code!
-
+
+ // Respond to a transmission
+ void Respond();
+
+ void ProcessRunwayVacatedReport(TowerPlaneRec* t);
+ void ProcessDownwindReport(TowerPlaneRec* t);
+
+ // Remove all options from the user dialog choice
+ void RemoveAllUserDialogOptions();
+
+ // Periodic checks on the various traffic.
+ void CheckHoldList(double dt);
+ void CheckCircuitList(double dt);
+ void CheckRunwayList(double dt);
+ void CheckApproachList(double dt);
+ void CheckDepartureList(double dt);
+
+ // Currently this assumes we *are* next on the runway and doesn't check for planes about to land -
+ // this should be done prior to calling this function.
+ void ClearHoldingPlane(TowerPlaneRec* t);
+
+ // Find a pointer to plane of callsign ID within the internal data structures
+ TowerPlaneRec* FindPlane(string ID);
+
+ // Remove and delete all instances of a plane with a given ID
+ void RemovePlane(string ID);
+
// Figure out if a given position lies on the active runway
// Might have to change when we consider more than one active rwy.
bool OnActiveRunway(Point3D pt);
// Figure out if a given position lies on a runway or not
bool OnAnyRunway(Point3D pt);
- // Calculate the eta of each plane to the threshold.
+ // Calculate the eta of a plane to the threshold.
// For ground traffic this is the fastest they can get there.
// For air traffic this is the middle approximation.
+ void CalcETA(TowerPlaneRec* tpr, bool printout = false);
+
+ // Iterate through all the lists and call CalcETA for all the planes.
void doThresholdETACalc();
// Order the list of traffic as per expected threshold use and flag any conflicts
bool doThresholdUseOrder();
+ // Calculate the crow-flys distance of a plane to the threshold in meters
+ double CalcDistOutM(TowerPlaneRec* tpr);
+
+ // Calculate the crow-flys distance of a plane to the threshold in miles
+ double CalcDistOutMiles(TowerPlaneRec* tpr);
+
+ /*
void doCommunication();
+ */
void IssueLandingClearance(TowerPlaneRec* tpr);
void IssueGoAround(TowerPlaneRec* tpr);
void IssueDepartureClearance(TowerPlaneRec* tpr);
- bool display; // Flag to indicate whether we should be outputting to the ATC display.
- bool displaying; // Flag to indicate whether we are outputting to the ATC display.
+ unsigned int update_count; // Convienince counter for speading computational load over several updates
+ unsigned int update_count_max; // ditto.
+
+ double timeSinceLastDeparture; // Time in seconds since last departure from active rwy.
+ bool departed; // set true when the above needs incrementing with time, false when it doesn't.
// environment - need to make sure we're getting the surface winds and not winds aloft.
SGPropertyNode* wind_from_hdg; //degrees
// or possibly another data structure with the positions of the inactive planes.
// Need a data structure to hold outstanding communications from aircraft.
- // Linked-list of planes on approach ordered with nearest first (timewise).
+ // Linked-list of planes on approach to active rwy ordered with nearest first (timewise).
// Includes planes that have landed but not yet vacated runway.
// Somewhat analagous to the paper strips used (used to be used?) in real life.
// Doesn't include planes in circuit until they turn onto base/final?
+ // TODO - may need to alter this for operation to more than one active rwy.
tower_plane_rec_list_type appList;
tower_plane_rec_list_iterator appListItr;
+
+ // What should we do with planes approaching the airport to join the circuit somewhere
+ // but not on straight-in though? - put them in here for now.
+ tower_plane_rec_list_type circuitAppList;
+ tower_plane_rec_list_iterator circuitAppListItr;
// List of departed planes (planes doing circuits go into circuitList not depList after departure)
tower_plane_rec_list_type depList;
// List of all planes due to use a given rwy arranged in projected order of rwy use
tower_plane_rec_list_type trafficList; // TODO - needs to be expandable to more than one rwy
tower_plane_rec_list_iterator trafficListItr;
+
+ // List of planes that have vacated the runway inbound but not yet handed off to ground
+ tower_plane_rec_list_type vacatedList;
+ tower_plane_rec_list_iterator vacatedListItr;
+
+ // Returns true if successful
+ bool RemoveFromTrafficList(string id);
+ bool RemoveFromAppList(string id);
+ bool RemoveFromRwyList(string id);
+
+ // Return the ETA of plane no. list_pos (1-based) in the traffic list.
+ // i.e. list_pos = 1 implies next to use runway.
+ double GetTrafficETA(unsigned int list_pos, bool printout = false);
+
+ // Add a tower plane rec with ETA to the traffic list in the correct position ETA-wise.
+ // Returns true if this could cause a threshold ETA conflict with other traffic, false otherwise.
+ bool AddToTrafficList(TowerPlaneRec* t, bool holding = false);
+
+ bool AddToCircuitList(TowerPlaneRec* t);
+
+ // Add to vacated list only if not already present
+ void AddToVacatedList(TowerPlaneRec* t);
// Ground can be separate or handled by tower in real life.
// In the program we will always use a separate FGGround class, but we need to know
bool separateGround; // true if ground control is separate
FGGround* ground; // The ground control associated with this airport.
+ bool _departureControlled; // true if we need to hand off departing traffic to departure control
+ //FGDeparture* _departure; // The relevant departure control (once we've actually written it!)
+
// for failure modeling
string trans_ident; // transmitted ident
bool tower_failed; // tower failed?
- // Pointers to current users position and orientation
- SGPropertyNode* user_lon_node;
- SGPropertyNode* user_lat_node;
- SGPropertyNode* user_elev_node;
+ // Pointers to current users position and orientation
+ SGPropertyNode* user_lon_node;
+ SGPropertyNode* user_lat_node;
+ SGPropertyNode* user_elev_node;
SGPropertyNode* user_hdg_node;
// Details of the general traffic flow etc in the circuit
// Currently not sure whether the above should be always +ve or just take the natural orthopos sign (+ve for RH circuit, -ve for LH).
double base_leg_pos; // Actual offset distance from the threshold (-ve) that planes are turning to base leg.
+ double nominal_crosswind_leg_pos;
+ double nominal_downwind_leg_pos;
+ double nominal_base_leg_pos;
+
friend istream& operator>> ( istream&, FGTower& );
};