Added resetMap()-function to web-view.

+ some small tweaks.

	modified:   dump1090.c
	modified:   public_html/script.js

dump1090.c

@@ -3051,6 +3051,7 @@ int decodeHexMessage(struct client *c) {
 
 /* Return a description of planes in json. */
 char *aircraftsToJson(int *len) {
+    time_t now = time(NULL);
     struct aircraft *a = Modes.aircrafts;
     int buflen = 1024; /* The initial buffer is incremented as needed. */
     char *buf = (char *) malloc(buflen), *p = buf;
@@ -3070,9 +3071,9 @@ char *aircraftsToJson(int *len) {
         l = snprintf(p,buflen,
             "{\"hex\":\"%06x\", \"squawk\":\"%04x\", \"flight\":\"%s\", \"lat\":%f, "
             "\"lon\":%f, \"altitude\":%d, \"track\":%d, "
-            "\"speed\":%d},\n",
+            "\"speed\":%d, \"messages\":%ld, \"seen\":%d},\n",
             a->addr, a->modeA, a->flight, a->lat, a->lon, a->altitude, a->track,
-            a->speed);
+            a->speed, a->messages, (int)(now - a->seen));
         p += l; buflen -= l;
         
         /* Resize if needed. */

public_html/script.js

@@ -3,8 +3,9 @@ CenterLat = 45.0;
 CenterLon = 9.0;
 ZoomLvl   = 5;
 Planes    = {};
-NumPlanes = 0;
+PlanesOnMap  = 0;
-Selected=null
+PlanesOnGrid = 0;
+Selected     = null;
 
 if (localStorage['CenterLat']) { CenterLat = Number(localStorage['CenterLat']); }
 if (localStorage['CenterLon']) { CenterLon = Number(localStorage['CenterLon']); }
@@ -12,7 +13,7 @@ if (localStorage['ZoomLvl'])   { ZoomLvl   = Number(localStorage['ZoomLvl']); }
 
 function getIconForPlane(plane) {
     var r = 255, g = 255, b = 0;
-    var maxalt = 40000; /* Max altitude in the average case */
+    var maxalt = 40000; // Max altitude in the average case
     var invalt = maxalt-plane.altitude;
     var selected = (Selected == plane.hex);
 
@@ -43,7 +44,8 @@ function selectPlane() {
 function refreshGeneralInfo() {
     var i = document.getElementById('geninfo');
     
-    i.innerHTML = NumPlanes+' planes on screen.';
+    i.innerHTML  = PlanesOnGrid + ' planes on grid.<br>';
+    i.innerHTML += PlanesOnMap + ' planes on map.';
 }
 
 function refreshSelectedInfo() {
@@ -58,19 +60,28 @@ function refreshSelectedInfo() {
     html += 'Altitude: '+p.altitude+' feet<br>';
     html += 'Speed: '+p.speed+' knots<br>';
     html += 'Coordinates: '+p.lat+', '+p.lon+'<br>';
+    html += 'Messages: '+p.messages+'<br>';
+    html += 'Seen: '+p.seen+' sec<br>';
     i.innerHTML = html;
 }
 
 function fetchData() {
     $.getJSON('/data.json', function(data) {
         var stillhere = {}
+        PlanesOnMap = 0;
+        
         for (var j=0; j < data.length; j++) {
             var plane = data[j];
-            var marker = null;
             stillhere[plane.hex] = true;
             plane.flight = $.trim(plane.flight);
             
+            if (plane.lat != 0 && plane.lon != 0) {
+                // Show only planes with position
+                var marker = null;
+                PlanesOnMap++;
+                
                 if (Planes[plane.hex]) {
+                    // Move and refresh old plane on map
                     var myplane = Planes[plane.hex];
                     marker = myplane.marker;
                     var icon = marker.getIcon();
@@ -83,9 +94,12 @@ function fetchData() {
                     myplane.lon = plane.lon;
                     myplane.track = plane.track;
                     myplane.flight = plane.flight;
+                    myplane.seen = plane.seen;
+                    myplane.messages = plane.messages;
                     if (myplane.hex == Selected)
                         refreshSelectedInfo();
                 } else {
+                    // Add new plane to map
                     marker = new google.maps.Marker({
                         position: new google.maps.LatLng(plane.lat, plane.lon),
                         map: Map,
@@ -95,15 +109,19 @@ function fetchData() {
                     marker.planehex = plane.hex;
                     Planes[plane.hex] = plane;
 
-                /* Trap clicks for this marker. */
+                    // Trap clicks for this marker.
                     google.maps.event.addListener(marker, 'click', selectPlane);
                 }
-            if (plane.flight.length == 0)
+                
+                if (plane.flight.length == 0) {
                     marker.setTitle(plane.hex)
-            else
+                } else {
                     marker.setTitle(plane.flight+' ('+plane.hex+')')
                 }
-        NumPlanes = data.length;
+            }
+        }
+
+        PlanesOnGrid = data.length;
         
         /* Remove idle planes. */
         for (var p in Planes) {
@@ -147,6 +165,16 @@ function placeFooter() {
     $('#info_footer').css('margin-left', marginLeft);
 }
 
+function resetMap() {
+    localStorage['CenterLat'] = 45.0;
+    localStorage['CenterLon'] = 9.0;
+    localStorage['ZoomLvl']   = 5;
+    Map.setZoom(parseInt(localStorage['ZoomLvl']));
+    Map.setCenter(new google.maps.LatLng(parseInt(localStorage['CenterLat']), parseInt(localStorage['CenterLon'])));
+    Selected = null;
+    document.getElementById('selinfo').innerHTML = '';
+}
+
 function initialize() {
     var mapOptions = {
         center: new google.maps.LatLng(CenterLat, CenterLon),