new plugin: show more portals, as if the map was zoomed in one additional level

yes, this does increase the requests to the niantic servers, but with the new cache code it's not that bad

plugins/show-more-portals.user.js

@@ -0,0 +1,61 @@
+// ==UserScript==
+// @id             iitc-plugin-show-more-portals@jonatkins
+// @name           IITC plugin: Show more portals
+// @category       Tweaks
+// @version        0.1.0.@@DATETIMEVERSION@@
+// @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
+// @updateURL      @@UPDATEURL@@
+// @downloadURL    @@DOWNLOADURL@@
+// @description    [@@BUILDNAME@@-@@BUILDDATE@@] Boost the detail level of portals shown on the map by one zoom level. Good for small screens. Likely to increase request failed errors on larger screens.
+// @include        https://www.ingress.com/intel*
+// @include        http://www.ingress.com/intel*
+// @match          https://www.ingress.com/intel*
+// @match          http://www.ingress.com/intel*
+// @grant          none
+// ==/UserScript==
+
+@@PLUGINSTART@@
+
+// PLUGIN START ////////////////////////////////////////////////////////
+
+
+// use own namespace for plugin
+window.plugin.showMorePortals = function() {};
+
+window.plugin.showMorePortals.setup  = function() {
+
+  // replace the window.getPortalDataZoom function
+
+  window.getPortalDataZoom = function() {
+    var mapZoom = map.getZoom();
+
+    // yes, it is possible to increase this beyond "+1" - however, that will end up producing a rediculous number
+    // of requests to the Niantic servers, giving many request failed errors/tile timeouts
+    // (every increase by one requests four times as many data tiles)
+    var z = mapZoom + 1;
+
+    // limiting the mazimum zoom level for data retrieval reduces the number of requests at high zoom levels
+    // (as all portal data is retrieved at z=17, why retrieve multiple z=18 tiles when fewer z=17 would do?)
+    // very effective along with the new cache code
+    if (z > 17) z=17;
+
+    // if the data zoom is above the map zoom we can step back if the detail level is the same
+    // with the new cache code this works rather well
+    while (z > mapZoom && getMinPortalLevelForZoom(z) == getMinPortalLevelForZoom(z-1)) {
+      z = z-1;
+    }
+
+    //sanity check - should never happen
+    if (z < 0) z=0;
+
+    return z;
+  }
+
+
+};
+
+var setup =  window.plugin.showMorePortals.setup;
+
+// PLUGIN END //////////////////////////////////////////////////////////
+
+@@PLUGINEND@@