Fix float

Author: LukePrior

js/tracker.js

@@ -1389,7 +1389,7 @@ function updateVehicleInfo(vcallsign, newPosition) {
            '<img class="'+((vehicle.vehicle_type=="car")?'car':'')+'" src="'+image+'" />' +
            '<span class="vbutton path '+((vehicle.polyline_visible) ? 'active' : '')+'" data-vcallsign="'+vcallsign+'"' + ' style="top:'+(vehicle.image_src_size[1]+55)+'px">Path</span>' +
            ((vehicle.vehicle_type!="car") ? '<span class="sbutton" onclick="shareVehicle(\'' + vcallsign + '\')" style="top:'+(vehicle.image_src_size[1]+85)+'px">Share</span>' : '') +
-           ((vehicle.vehicle_type!="car" && newPosition.gps_alt > 1000 && vehicle.ascent_rate < 1) ? '<span class="sbutton hysplit '+((vehicle.prediction_hysplit_visible) ? 'active' : '')+'" data-vcallsign="' + vcallsign + '" style="top:'+(vehicle.image_src_size[1]+115)+'px">Float</span>' : '') +
+           ((vehicle.vehicle_type!="car" && newPosition.gps_alt > 5000 && vehicle.ascent_rate < 1 && vehicle.ascent_rate > -1) ? '<span class="sbutton hysplit '+((vehicle.prediction_hysplit_visible) ? 'active' : '')+'" data-vcallsign="' + vcallsign + '" style="top:'+(vehicle.image_src_size[1]+115)+'px">Float</span>' : '') +
            '<div class="left">' +
            '<dl>';
   //mobile
@@ -1401,7 +1401,7 @@ function updateVehicleInfo(vcallsign, newPosition) {
            '<img class="'+((vehicle.vehicle_type=="car")?'car':'')+'" src="'+image+'" />' +
            '<span class="vbutton path '+((vehicle.polyline_visible) ? 'active' : '')+'" data-vcallsign="'+vcallsign+'"' + ' style="top:55px">Path</span>' +
            ((vehicle.vehicle_type!="car") ? '<span class="sbutton" onclick="shareVehicle(\'' + vcallsign + '\')" style="top:85px">Share</span>' : '') +
-           ((vehicle.vehicle_type!="car" && newPosition.gps_alt > 1000 && vehicle.ascent_rate < 1) ? '<span class="sbutton hysplit '+((vehicle.prediction_hysplit_visible) ? 'active' : '')+'" data-vcallsign="' + vcallsign + '" style="top:115px">Float</span>' : '') +
+           ((vehicle.vehicle_type!="car" && newPosition.gps_alt > 5000 && vehicle.ascent_rate < 1 && vehicle.ascent_rate > -1) ? '<span class="sbutton hysplit '+((vehicle.prediction_hysplit_visible) ? 'active' : '')+'" data-vcallsign="' + vcallsign + '" style="top:115px">Float</span>' : '') +
            '<div class="left">' +
            '<dl>';
   var b    = '</dl>' +
@@ -1498,7 +1498,17 @@ function createHysplit(callsign, adjustment) {
 
     var altitude = Math.round(vehicle.curr_position.gps_alt) + adjustment;
 
-    var endTime = new Date(Date.parse(vehicle.curr_position.gps_time));
+    var startTime = new Date(Date.parse(vehicle.curr_position.gps_time.replace("Z","")));
+    //max is 8h back so need to catch is older
+    var nowTime = new Date();
+    var timeDifference = nowTime - startTime;
+    if (timeDifference > 28800000) {
+        nowTime.setHours(nowTime.getHours() - 8);
+        startTime = nowTime;
+    }
+    startTime = startTime.toISOString();
+
+    var endTime = new Date(Date.parse(vehicle.curr_position.gps_time.replace("Z","")));
     endTime.setHours(endTime.getHours() + 84);
     endTime = endTime.toISOString();
 
@@ -1508,7 +1518,7 @@ function createHysplit(callsign, adjustment) {
         + "&launch_latitude=" + vehicle.curr_position.gps_lat
         + "&launch_longitude=" + lon
         + "&launch_altitude=" + (altitude-1)
-        + "&launch_datetime=" + vehicle.curr_position.gps_time
+        + "&launch_datetime=" + startTime
         + "&ascent_rate=0.1"
         + "&float_altitude=" + altitude
         + "&stop_datetime=" + endTime;