209 lines
6.8 KiB
Text
209 lines
6.8 KiB
Text
var boom_tanker = "Models/Geometry/KC135/KC135.xml";
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var probe_tanker = "Models/Geometry/KA6-D/KA6-D.xml";
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var oclock = func(bearing) int(0.5 + geo.normdeg(bearing) / 30) or 12;
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var identity = {
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# return free ai id number and least used, free callsign/channel pair
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get: func {
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var data = {}; # copy of me.pool
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var revdata = {}; # channel->callsign
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foreach (var k; keys(me.pool)) {
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data[k] = me.pool[k];
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revdata[me.pool[k][0]] = k;
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}
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var id_used = {};
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foreach (var t; props.globals.getNode("ai/models", 1).getChildren()) {
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if ((var c = t.getNode("callsign")) != nil)
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delete(data, c.getValue() or "");
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if ((var c = t.getNode("navaids/tacan/channel-ID")) != nil)
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delete(data, revdata[c.getValue() or ""]);
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if ((var c = t.getNode("id")) != nil)
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id_used[c.getValue()] = 1;
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}
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for (var aiid = -2; aiid; aiid -= 1)
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if (!id_used[aiid])
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break;
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if (!size(data))
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return [aiid, "MOBIL3", "062X"];
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var d = sort(keys(data), func(a, b) data[a][1] - data[b][1])[0];
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me.pool[d][1] += 1;
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return [aiid, d, data[d][0]];
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},
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pool: {
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ESSO1: ["040X", 0], ESSO2: ["041X", 0], ESSO3: ["042X", 0],
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TEXACO1: ["050X", 0], TEXACO2: ["051X", 0], TEXACO3: ["052X", 0],
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MOBIL1: ["060X", 0], MOBIL2: ["061X", 0], MOBIL3: ["062X", 0],
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},
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};
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var Tanker = {
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new: func(aiid, callsign, tacan, type, kias, heading, coord) {
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var m = { parents: [Tanker] };
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m.callsign = callsign;
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m.tacan = tacan;
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m.kias = kias;
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m.heading = heading;
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m.coord = geo.Coord.new(coord);
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m.out_of_range_time = 0;
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m.interval = 10;
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var n = props.globals.getNode("models", 1);
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for (var i = 0; 1; i += 1)
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if (n.getChild("model", i, 0) == nil)
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break;
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m.model = n.getChild("model", i, 1);
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var n = props.globals.getNode("ai/models", 1);
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for (var i = 0; 1; i += 1)
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if (n.getChild("tanker", i, 0) == nil)
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break;
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m.ai = n.getChild("tanker", i, 1);
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m.ai.getNode("id", 1).setIntValue(aiid);
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m.ai.getNode("callsign", 1).setValue(m.callsign);
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m.ai.getNode("tanker", 1).setBoolValue(1);
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m.ai.getNode("valid", 1).setBoolValue(1);
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m.ai.getNode("navaids/tacan/channel-ID", 1).setValue(m.tacan);
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m.ai.getNode("refuel/type", 1).setValue(type);
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m.ai.getNode("refuel/contact", 1).setBoolValue(0);
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m.latN = m.ai.getNode("position/latitude-deg", 1);
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m.lonN = m.ai.getNode("position/longitude-deg", 1);
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m.altN = m.ai.getNode("position/altitude-ft", 1);
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m.hdgN = m.ai.getNode("orientation/true-heading-deg", 1);
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m.pitchN = m.ai.getNode("orientation/pitch-deg", 1);
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m.rollN = m.ai.getNode("orientation/roll-deg", 1);
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m.ktasN = m.ai.getNode("velocities/true-airspeed-kt", 1);
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m.vertN = m.ai.getNode("velocities/vertical-speed-fps", 1);
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m.rangeN = m.ai.getNode("radar/range-nm", 1);
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m.brgN = m.ai.getNode("radar/bearing-deg", 1);
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m.elevN = m.ai.getNode("radar/elevation-deg", 1);
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m.contactN = m.ai.getNode("refuel/contact", 1);
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m.update();
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m.model.getNode("path", 1).setValue(type == "boom" ? boom_tanker : probe_tanker);
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m.model.getNode("latitude-deg-prop", 1).setValue(m.latN.getPath());
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m.model.getNode("longitude-deg-prop", 1).setValue(m.lonN.getPath());
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m.model.getNode("elevation-ft-prop", 1).setValue(m.altN.getPath());
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m.model.getNode("heading-deg-prop", 1).setValue(m.hdgN.getPath());
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m.model.getNode("pitch-deg-prop", 1).setValue(m.pitchN.getPath());
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m.model.getNode("roll-deg-prop", 1).setValue(m.rollN.getPath());
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m.model.getNode("load", 1).remove();
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m.identify();
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return Tanker.active[m.callsign] = m;
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},
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del: func {
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setprop("sim/messages/ai-plane", me.callsign ~ " returns to base");
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me.model.remove();
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me.ai.remove();
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delete(Tanker.active, me.callsign);
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},
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update: func {
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var dt = getprop("sim/time/delta-sec");
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var alt = me.coord.alt();
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if ((me.interval += dt) >= 10) {
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me.interval -= 10;
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me.headwind = aircraft.wind_speed_from(me.heading);
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me.ktas = aircraft.kias_to_ktas(me.kias, alt);
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}
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me.coord.apply_course_distance(me.heading, dt * (me.ktas - me.headwind) * NM2M / 3600);
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me.ac = geo.aircraft_position();
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me.distance = me.ac.distance_to(me.coord);
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me.bearing = me.ac.course_to(me.coord);
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var dalt = alt - me.ac.alt();
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var ac_hdg = getprop("/orientation/heading-deg");
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me.latN.setDoubleValue(me.coord.lat());
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me.lonN.setDoubleValue(me.coord.lon());
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me.altN.setDoubleValue(alt * M2FT);
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me.hdgN.setDoubleValue(me.heading);
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me.pitchN.setDoubleValue(0);
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me.rollN.setDoubleValue(0);
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me.ktasN.setDoubleValue(me.ktas);
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me.vertN.setDoubleValue(0);
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me.rangeN.setDoubleValue(me.distance * M2NM);
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me.brgN.setDoubleValue(me.bearing);
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me.elevN.setDoubleValue(math.atan2(dalt, me.distance) * R2D);
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me.contactN.setBoolValue(me.distance < 76 and dalt > 0 # 250 ft
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and abs(view.normdeg(me.bearing - ac_hdg)) < 20);
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var now = getprop("/sim/time/elapsed-sec");
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if (me.distance < 90000)
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me.out_of_range_time = now;
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elsif (now - me.out_of_range_time > 600)
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return me.del();
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settimer(func me.update(), 0);
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},
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identify: func {
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var alt = int((me.coord.alt() * M2FT + 50) / 100) * 100;
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var msg = sprintf("%s at %.0f, heading %.0f with %.0f knots, TACAN %s",
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me.callsign, alt, me.heading, me.kias, me.tacan);
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setprop("sim/messages/ai-plane", msg);
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},
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report: func {
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var dist = int(me.distance * M2NM);
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var hdg = getprop("orientation/heading-deg");
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var diff = (me.coord.alt() - me.ac.alt()) * M2FT;
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var qual = diff > 3000 ? " well" : abs(diff) > 1000 ? " slightly" : "";
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var rel = diff > 1000 ? " above" : diff < -1000 ? " below" : "";
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var msg = sprintf("Tanker %s is at %s o'clock%s",
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me.callsign, oclock(me.ac.course_to(me.coord) - hdg),
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qual ~ rel);
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setprop("sim/messages/ground", msg);
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},
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active: {},
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};
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var request = func {
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var tanker = values(Tanker.active);
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if (size(tanker))
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return tanker[0].identify();
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var type = props.globals.getNode("systems/refuel", 1).getChildren("type");
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if (!size(type))
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return;
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type = type[rand() * size(type)].getValue();
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var (aiid, callsign, tacanid) =_= identity.get();
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var hdg = getprop("orientation/heading-deg");
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var course = hdg + (rand() - 0.5) * 60;
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var dist = 6000 + rand() * 4000;
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var alt = int(10 + rand() * 15) * 1000; # FL100--FL250
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var coord = geo.aircraft_position().apply_course_distance(course, dist).set_alt(alt * FT2M);
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Tanker.new(aiid, callsign, tacanid, type, 250, hdg, coord);
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}
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var report = func {
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var tanker = values(Tanker.active);
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if (size(tanker))
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tanker[0].report();
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}
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_setlistener("/sim/signals/nasal-dir-initialized", func {
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var aar_capable = size(props.globals.getNode("systems/refuel", 1).getChildren("type"));
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gui.menuEnable("tanker", aar_capable);
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if (!aar_capable)
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request = func { setprop("sim/messages/ai-plane", "no tanker in range") };
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setlistener("/sim/signals/reinit", func {
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foreach (var t; values(Tanker.active))
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t.del();
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});
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# randomize tacan pool usage counter (0 and -1)
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foreach (var t; values(identity.pool))
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t[1] = int(rand() * 2) - 1;
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});
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