Code restructure of portal render limit handler

code/map_data.js

@@ -44,7 +44,7 @@ window.requestData = function() {
   }
 
   // Reset previous result of Portal Render Limit handler
-  PRL.init();
+  portalRenderLimit.init();
   // finally send ajax requests
   $.each(tiles, function(ind, tls) {
     data = { minLevelOfDetail: -1 };
@@ -73,7 +73,7 @@ window.handleDataResponse = function(data, textStatus, jqXHR) {
   var ppp = [];
   var p2f = {};
   // Reset new portals count of Portal Render Limit handler
-  PRL.resetCounting();
+  portalRenderLimit.resetCounting();
   $.each(m, function(qk, val) {
     $.each(val.deletedGameEntityGuids, function(ind, guid) {
       if(getTypeByGuid(guid) === TYPE_FIELD && window.fields[guid] !== undefined) {
@@ -102,7 +102,7 @@ window.handleDataResponse = function(data, textStatus, jqXHR) {
           ) return;
 
 
-        PRL.pushPortal(ent);
+        portalRenderLimit.pushPortal(ent);
         ppp.push(ent); // delay portal render
       } else if(ent[2].edge !== undefined) {
         renderLink(ent);

code/portal_render_limit.js

@@ -0,0 +1,80 @@
+
+// PORTAL RENDER LIMIT HANDLER ///////////////////////////////////////
+// Functions to handle hiding low level portal when portal render 
+// limit is reached. 
+//
+// After initialized and reset in window.requestData(), portals in 
+// response data will pass to function "pushPortal". Each new portal 
+// not on the map will add 1 to newPortalsPerLevel[portal level].
+//
+// "getMinLevel" will be called by "getMinPortalLevel" in utils_misc.js 
+// to determine min portal level to draw on map.
+// 
+// "getMinLevel" will return minLevel and call "setMinLevel" if 
+// minLevel hasn't set yet. 
+// 
+// In "setMinLevel", it will loop through all portal level from 
+// high to low, and sum total portal count (old + new) to check 
+// minLevel. 
+//
+// In each call of window.handleDataResponse(), it will call 
+// "resetCounting" to reset previous response data. But minLevel
+// is preserved and only replaced when render limit reached in 
+// higher level, until next window.requestData() called and reset.
+// 
+
+window.portalRenderLimit = function() {}
+
+window.portalRenderLimit.initialized = false;
+window.portalRenderLimit.minLevelSet = false;
+window.portalRenderLimit.minLevel = -1;
+window.portalRenderLimit.newPortalsPerLevel = new Array(MAX_PORTAL_LEVEL + 1);
+
+window.portalRenderLimit.init = function () {
+  portalRenderLimit.initialized = true;
+  portalRenderLimit.minLevel = -1;
+  portalRenderLimit.resetCounting();
+}
+
+window.portalRenderLimit.resetCounting = function() {
+  portalRenderLimit.minLevelSet = false;
+  for(var i = 0; i <= MAX_PORTAL_LEVEL; i++) {
+    portalRenderLimit.newPortalsPerLevel[i] = 0;
+  }
+}
+
+window.portalRenderLimit.pushPortal = function(ent) {
+  var portalGuid = ent[0];
+  var portalLevel = parseInt(getPortalLevel(ent[2]));
+  var layerGroup = portalsLayers[portalLevel];
+  
+  if(findEntityInLeaflet(layerGroup, window.portals, ent[0])) return;
+  portalRenderLimit.newPortalsPerLevel[portalLevel]++;
+}
+
+window.portalRenderLimit.getMinLevel = function() {
+  if(!portalRenderLimit.initialized) return -1;
+  if(!portalRenderLimit.minLevelSet) portalRenderLimit.setMinLevel();
+  return portalRenderLimit.minLevel;
+}
+
+window.portalRenderLimit.setMinLevel = function() {
+  var totalPortalsCount = 0;
+  var newMinLevel = MAX_PORTAL_LEVEL + 1;
+  
+  // Find the min portal level under render limit
+  while(newMinLevel > 0) {
+    var oldPortalCount = layerGroupLength(portalsLayers[newMinLevel - 1]);
+    var newPortalCount = portalRenderLimit.newPortalsPerLevel[newMinLevel - 1];
+    totalPortalsCount += oldPortalCount + newPortalCount;
+    if(totalPortalsCount >= MAX_DRAWN_PORTALS)
+      break;
+    newMinLevel--;
+  }
+  
+  // If render limit reached at max portal level, still let portal at max level render
+  newMinLevel = Math.min(newMinLevel, MAX_PORTAL_LEVEL);
+  
+  portalRenderLimit.minLevel = Math.max(newMinLevel, portalRenderLimit.minLevel);
+  portalRenderLimit.minLevelSet = true;
+}

code/utils_misc.js

@@ -2,59 +2,6 @@
 
 // UTILS + MISC  ///////////////////////////////////////////////////////
 
-// PRL - Portal Render Limit handler
-window.PRL = function() {}
-
-window.PRL.init = function () {
-  PRL.initialized = true;
-  PRL.minLevel = -1;
-  PRL.resetCounting();
-}
-
-window.PRL.resetCounting = function() {
-  PRL.minLevelSet = false;
-  if(!PRL.newPortalsPerLevel)
-    PRL.newPortalsPerLevel = new Array(MAX_PORTAL_LEVEL+1);
-  for(var i = 0; i <= MAX_PORTAL_LEVEL; i++) {
-    PRL.newPortalsPerLevel[i] = 0;
-  }
-}
-
-window.PRL.pushPortal = function(ent) {
-  var portalGuid = ent[0];
-  var portalLevel = parseInt(getPortalLevel(ent[2]));
-  var layerGroup = portalsLayers[portalLevel];
-  
-  if(findEntityInLeaflet(layerGroup, window.portals, ent[0])) return;
-  PRL.newPortalsPerLevel[portalLevel]++;
-}
-
-window.PRL.getMinLevel = function() {
-  if(!PRL.initialized) return -1;
-  if(!PRL.minLevelSet) PRL.setMinLevel();
-  return PRL.minLevel;
-}
-
-window.PRL.setMinLevel = function() {
-  var totalPortalsCount = 0;
-  var newMinLevel = MAX_PORTAL_LEVEL + 1;
-  
-  // Find the min portal level under render limit
-  while(newMinLevel > 0) {
-    var oldPortalCount = layerGroupLength(portalsLayers[newMinLevel - 1]);
-    totalPortalsCount += oldPortalCount + PRL.newPortalsPerLevel[newMinLevel - 1];
-    if(totalPortalsCount >= MAX_DRAWN_PORTALS)
-      break;
-    newMinLevel--;
-  }
-  
-  // If render limit reached at max portal level, still let portal at max level render
-  if(newMinLevel === MAX_PORTAL_LEVEL + 1) newMinLevel = MAX_PORTAL_LEVEL;
-  
-  if(newMinLevel > PRL.minLevel) PRL.minLevel = newMinLevel;
-  PRL.minLevelSet = true;
-}
-
 window.layerGroupLength = function(layerGroup) {
   var layersCount = 0;
   var layers = layerGroup._layers;
@@ -213,7 +160,7 @@ window.getMinPortalLevel = function() {
   var z = map.getZoom();
   if(z >= 16) return 0;
   var conv = ['impossible', 8,7,7,6,6,5,5,4,4,3,3,2,2,1,1];
-  var minLevelByRenderLimit = PRL.getMinLevel();
+  var minLevelByRenderLimit = portalRenderLimit.getMinLevel();
   var result = minLevelByRenderLimit > conv[z]
     ? minLevelByRenderLimit
     : conv[z];