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Protect against division by zero in level off calculation

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This commit is contained in:
Jonathan Redpath 2023-04-08 12:15:46 +01:00
parent 9db758d9d0
commit fa6ee1d57d
1 changed files with 9 additions and 6 deletions
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15
Nasal/FMGC/flightplan.nas
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@ -776,16 +776,19 @@ var flightPlanController = {
calculateLvlOffPoint: func(deltaAltitude) {
me.distLvl = (deltaAltitude * pts.Velocities.groundspeedKt.getValue()) / (fmgc.Internal.vs.getValue() * 60);
me._verticalSpeedVal = fmgc.Internal.vs.getValue();
if (me._verticalSpeedVal != 0) {
me.distLvl = (deltaAltitude * pts.Velocities.groundspeedKt.getValue()) / (fmgc.Internal.vs.getValue() * 60);
} else {
me.distLvl = 999;
}
if (me.active.getBoolValue() and fmgc.Output.lat.getValue() == 1 and me.distLvl >= 0) { # NAV
me.lvlOffPoint = me.flightplans[2].pathGeod(me.currentToWptIndex.getValue() - 1, me.flightplans[2].getWP(me.currentToWptIndex.getValue()).leg_distance - me.distToWpt.getValue() + me.distLvl);
} elsif (fmgc.Output.lat.getValue() == 0 and me.distLvl >= 0) { # HDG TRK
var coord = geo.aircraft_position();
coord.apply_course_distance(getprop("/orientation/track-magnetic-deg"), me.distLvl * NM2M);
var latGeo = coord.lat();
var lonGeo = coord.lon();
me.lvlOffPoint = {lat: latGeo, lon: lonGeo};
me._lvlOffCoord = geo.aircraft_position();
me._lvlOffCoord.apply_course_distance(getprop("/orientation/track-magnetic-deg"), me.distLvl * NM2M);
me.lvlOffPoint = {lat: me._lvlOffCoord.lat(), lon: me._lvlOffCoord.lon()};
} else {
setprop("/autopilot/route-manager/vnav/ec/show", 0);
setprop("/autopilot/route-manager/vnav/ed/show", 0);