Reduce frequency of map place updates

www/js/map.js

@@ -6,6 +6,7 @@
 
 
 var gotfirstfix = false;
+var lastMapUpdateTimestamp = 0;
 
 var playerPosition = {
     coords: {
@@ -29,15 +30,31 @@ if (gamemaptype == "leaflet") {
     var map = mapboxMap();
 }
 
+// Make sure map places are refreshed even when location isn't
+var mapRefreshInterval = setInterval(function () {
+    if (gotfirstfix) {
+        var currentTimestamp = Math.floor(Date.now() / 1000);
+        if (lastMapUpdateTimestamp < (currentTimestamp - 10)) {
+            updatePlaceLayer(playerPosition.coords.latitude, playerPosition.coords.longitude);
+            lastMapUpdateTimestamp = currentTimestamp;
+        }
+    }
+}, 30 * 1000);
+
 watchLocation(function (position) {
+    playerPosition = position;
     if (gotfirstfix) {
         setMapLocation(position.coords.latitude, position.coords.longitude);
-        updatePlaceLayer(position.coords.latitude, position.coords.longitude);
+        // Don't refresh map at an interval less than ten seconds
+        var currentTimestamp = Math.floor(Date.now() / 1000);
+        if (lastMapUpdateTimestamp < (currentTimestamp - 10)) {
+            updatePlaceLayer(position.coords.latitude, position.coords.longitude);
+            lastMapUpdateTimestamp = currentTimestamp;
+        }
     } else {
         animateMapIn(position.coords.latitude, position.coords.longitude, 16, position.coords.heading);
         gotfirstfix = true;
     }
-    playerPosition = position;
 }, function (error) {
     geoerrorcount++;
     console.log("Geolocation error #" + geoerrorcount + ": ", error);
@@ -65,7 +82,7 @@ function updatePlaceLayer(latitude, longitude) {
     callAPI("nearbyplaces", {
         latitude: latitude,
         longitude: longitude,
-        radius: 1
+        radius: 2
     }, function (data) {
         map.updatePlaceLayer(data);
     });