314 lines
9 KiB
Text
314 lines
9 KiB
Text
#
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# Emesary interface to access nav data such as airport information, fixes etc.
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#
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var NavDataInterface = {
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new : func (device)
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{
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var obj = { parents : [ NavDataInterface ] };
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# Emesary
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obj._recipient = nil;
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obj._transmitter = emesary.GlobalTransmitter;
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obj._registered = 0;
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obj._device = device;
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obj._defaultDTO = "";
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# List of recently use waypoints
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obj._recentWaypoints = std.Vector.new();
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return obj;
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},
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# Find the airports within 200nm and return them.
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getNearestAirports : func()
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{
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# To make this more efficient for areas with a high density of airports, we'll try
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# a small radius first and expand until we have reached 200nm or have 25 airports.
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var radius = 0;
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var apts = [];
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while ((radius <= 200) and (size(apts) < 25)) {
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radius = radius + 50;
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apts = findAirportsWithinRange(radius);
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}
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if (size(apts) > 25) {
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apts = subvec(apts, 0, 25);
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}
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return apts;
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},
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# Find the nearest nav aids of a given type within 200nm, to a maximum of 25.
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getNavDataWithinRange: func(type)
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{
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# To make this more efficient for areas with a high density of fixes, we'll try
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# a small radius first and expand until we have reached 200nm or have 25 nav aids.
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var radius = 0;
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var navdata = [];
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while ((radius <= 200) and (size(navdata) < 25)) {
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radius = radius + 50;
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navdata = findNavaidsWithinRange(radius, type);
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}
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if (size(navdata) > 25) {
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navdata = subvec(navdata, 0, 25);
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}
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return navdata;
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},
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# Find a specific airport by ID. Return an array of airport objects
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getAirportById : func(id)
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{
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var apt = findAirportsByICAO(id, "airport");
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if ((apt != nil) and (! me._recentWaypoints.contains(id))) {
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me._recentWaypoints.insert(0, id);
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}
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return apt;
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},
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# Find an arbritrary piece of nav data by ID. This searches based on the
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# current location and returns an array of objects that match the id.
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getNavDataById : func (id)
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{
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# Check for airport first
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var navdata = findAirportsByICAO(id, "airport");
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# Check for Navaids.
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if (size(navdata) == 0) navdata = findNavaidsByID(id);
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# Check for fix.
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if (size(navdata) == 0) navdata = findFixesByID(id);
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# Check for a pseudo-fix in the flightplan
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if (size(navdata) == 0) {
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var fp = flightplan();
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if (fp != nil) {
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for (var i = 0; i < fp.getPlanSize(); i = i +1) {
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var wp = fp.getWP(i);
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if (wp.wp_name == id) {
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append(navdata, wp);
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}
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}
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}
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}
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if ((size(navdata) > 0) and (! me._recentWaypoints.contains(id))) {
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me._recentWaypoints.insert(0, id);
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}
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return navdata;
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},
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# Find a Nav Aid by ID. This searches based on the
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# current location and returns an array of objects that match the id.
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getNavAidById : func (params)
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{
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var id = params.id;
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var type = "all";
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if (params.type != nil) type = params.type;
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var navdata = findNavaidsByID(id, type);
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if ((size(navdata) > 0) and (! me._recentWaypoints.contains(id))) {
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me._recentWaypoints.insert(0, id);
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}
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return navdata;
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},
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# Retrieve the current flightplan and return it
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getFlightplan : func ()
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{
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return flightplan();
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},
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# Retrieve the Airway waypoints on the current leg.
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getAirwayWaypoints : func() {
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var fp = flightplan();
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if (fp != nil) {
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var current_wp = fp.currentWP();
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if ((current_wp != nil) and (fp.indexOfWP(current_wp) > 0)) {
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var last_wp = fp.getWP(fp.indexOfWP(current_wp) -1);
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return airwaysRoute(last_wp, current_wp);
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}
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}
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return nil;
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},
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# Return the recently seen waypoints, collected from previous calls to
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# other nav data functions
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getRecentWaypoints : func()
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{
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return me._recentWaypoints.vector;
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},
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# Add an ID to the list of recent waypoints
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addRecentWaypoint : func(id)
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{
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if ((id != nil) and (! me._recentWaypoints.contains(id))) {
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me._recentWaypoints.insert(0, id);
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}
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},
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# Return the array of user waypoints. TODO
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getUserWaypoints : func()
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{
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return [];
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},
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# Set up a DirectTo a given ID, with optional VNAV altitude offset.
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setDirectTo : func(param)
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{
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var id = param.id;
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var alt_ft = param.alt_ft;
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var offset_nm = param.offset_nm;
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var fp = flightplan();
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var wp_idx = -1;
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if (fp != nil) {
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# We've already got a flightplan, so see if this WP already exists.
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for (var i = 0; i < fp.getPlanSize(); i = i + 1) {
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var wp = fp.getWP(i);
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if ((wp.wp_name != nil) and (wp.wp_name == id)) {
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# OK, we're assuming that if the names actually match, then
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# they refer to the same ID. So direct to that index.
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wp_idx = i;
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break;
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}
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}
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}
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if (wp_idx != -1) {
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# Found the waypoint in the plan, so use that as the DTO.
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var wp = fp.getWP(wp_idx);
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setprop("/instrumentation/gps/scratch/ident", wp.wp_name);
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setprop("/instrumentation/gps/scratch/altitude-ft", 0);
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setprop("/instrumentation/gps/scratch/latitude-deg", wp.lat);
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setprop("/instrumentation/gps/scratch/longitude-deg", wp.lon);
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} else {
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# No flightplan, or waypoint not found, so use the GPS DTO function.
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# Hokey property-based interface.
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setprop("/instrumentation/gps/scratch/ident", id);
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setprop("/instrumentation/gps/scratch/altitude-ft", 0);
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setprop("/instrumentation/gps/scratch/latitude-deg", 0);
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setprop("/instrumentation/gps/scratch/longitude-deg", 0);
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}
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# Switch the GPS to DTO mode.
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setprop("/instrumentation/gps/command", "direct");
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},
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# Return the current DTO location to use
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getCurrentDTO : func()
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{
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return me._defaultDTO;
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},
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# Set the current DTO location to use
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setDefaultDTO : func(id)
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{
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me._defaultDTO = id;
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},
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RegisterWithEmesary : func()
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{
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if (me._recipient == nil){
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me._recipient = emesary.Recipient.new("DataInterface");
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var pfd_obj = me._device;
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var controller = me;
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me._recipient.Receive = func(notification)
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{
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if (notification.Device_Id == pfd_obj.device_id
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and notification.NotificationType == notifications.PFDEventNotification.DefaultType) {
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if (notification.Event_Id == notifications.PFDEventNotification.NavData
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and notification.EventParameter != nil)
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{
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var id = notification.EventParameter.Id;
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if (id == "NearestAirports") {
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notification.EventParameter.Value = controller.getNearestAirports();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "AirportByID") {
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notification.EventParameter.Value = controller.getAirportById(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "NavDataByID") {
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notification.EventParameter.Value = controller.getNavDataById(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "NavAidByID") {
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notification.EventParameter.Value = controller.getNavAidById(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "NavDataWithinRange") {
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notification.EventParameter.Value = controller.getNavDataWithinRange(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "Flightplan") {
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notification.EventParameter.Value = controller.getFlightplan();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "RecentWaypoints") {
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notification.EventParameter.Value = controller.getRecentWaypoints();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "AddRecentWaypoint") {
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controller.addRecentWaypoint(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "AirwayWaypoints") {
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notification.EventParameter.Value = controller.getAirwayWaypoints();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "UserWaypoints") {
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notification.EventParameter.Value = controller.getUserWaypoints();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "CurrentDTO") {
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notification.EventParameter.Value = controller.getCurrentDTO();
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "SetDirectTo") {
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controller.setDirectTo(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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if (id == "SetDefaultDTO") {
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controller.setDefaultDTO(notification.EventParameter.Value);
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return emesary.Transmitter.ReceiptStatus_Finished;
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}
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}
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}
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return emesary.Transmitter.ReceiptStatus_NotProcessed;
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};
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}
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me._transmitter.Register(me._recipient);
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me._registered = 1;
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},
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DeRegisterWithEmesary : func()
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{
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# remove registration from transmitter; but keep the recipient once it is created.
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if (me._registered == 1) me._transmitter.DeRegister(me._recipient);
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me._registered = 0;
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},
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start : func() {
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me.RegisterWithEmesary();
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},
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stop : func() {
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me.DeRegisterWithEmesary();
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},
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};
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