Added retries to scene loading (#3418)

Co-authored-by: Steven Yau <[email protected]>

src/resources/hierarchy.js

@@ -8,7 +8,7 @@ class HierarchyHandler {
     }
 
     load(url, callback) {
-        SceneUtils.load(url, callback);
+        SceneUtils.load(url, this.maxRetries, callback);
     }
 
     open(url, data) {

src/resources/scene-settings.js

@@ -7,7 +7,7 @@ class SceneSettingsHandler {
     }
 
     load(url, callback) {
-        SceneUtils.load(url, callback);
+        SceneUtils.load(url, this.maxRetries, callback);
     }
 
     open(url, data) {

src/resources/scene-utils.js

@@ -8,9 +8,10 @@ const SceneUtils = {
      * @name SceneUtils.load
      * @description Loads the scene JSON file from a URL.
      * @param {string} url - URL to scene JSON.
+     * @param {number} maxRetries - Number of http load retry attempts.
      * @param {Function} callback - The callback to the JSON file is loaded.
      */
-    load: function (url, callback) {
+    load: function (url, maxRetries, callback) {
         if (typeof url === 'string') {
             url = {
                 load: url,
@@ -19,8 +20,8 @@ const SceneUtils = {
         }
 
         http.get(url.load, {
-            retry: this.maxRetries > 0,
-            maxRetries: this.maxRetries
+            retry: maxRetries > 0,
+            maxRetries: maxRetries
         }, function (err, response) {
             if (!err) {
                 callback(err, response);

src/resources/scene.js

@@ -15,7 +15,7 @@ class SceneHandler {
     }
 
     load(url, callback) {
-        SceneUtils.load(url, callback);
+        SceneUtils.load(url, this.maxRetries, callback);
     }
 
     open(url, data) {