updated serialization of randomizers to array instead of object

com.unity.perception/Runtime/Randomization/Scenarios/Serialization/ScenarioSerializer.cs

             };
         }
 
-        static Dictionary<string, Group> SerializeRandomizers(IEnumerable<Randomizer> randomizers)
+        static List<Group> SerializeRandomizers(IEnumerable<Randomizer> randomizers)
-            var serializedRandomizers = new Dictionary<string, Group>();
+            var serializedRandomizers = new List<Group>();
-                serializedRandomizers.Add(randomizer.GetType().Name, randomizerData);
+
+                serializedRandomizers.Add(randomizerData);
             }
             return serializedRandomizers;
         }
             var randomizerData = new Group();
             var fields = randomizer.GetType().GetFields();
+            randomizerData.className = randomizer.GetType().Name;
             foreach (var field in fields)
             {
                 if (field.FieldType.IsSubclassOf(typeof(Randomization.Parameters.Parameter)))
             DeserializeRandomizers(scenario.randomizers, template.groups);
         }
 
-        static void DeserializeRandomizers(IEnumerable<Randomizer> randomizers, Dictionary<string, Group> groups)
+        static void DeserializeRandomizers(IEnumerable<Randomizer> randomizers, List<Group> groups)
-            foreach (var randomizerPair in groups)
+            foreach (var randomizerData in groups)
-                if (!randomizerTypeMap.ContainsKey(randomizerPair.Key))
+                if (!randomizerTypeMap.ContainsKey(randomizerData.className))
-                var randomizer = randomizerTypeMap[randomizerPair.Key];
-                DeserializeRandomizer(randomizer, randomizerPair.Value);
+                var randomizer = randomizerTypeMap[randomizerData.className];
+                DeserializeRandomizer(randomizer, randomizerData);
             }
         }
 

com.unity.perception/Runtime/Randomization/Scenarios/Serialization/SerializationStructures.cs

     #region GroupedObjects
     class TemplateConfigurationOptions
     {
-        public Dictionary<string, Group> groups = new Dictionary<string, Group>();
+        public List<Group> groups = new List<Group>();
     }
 
     class StandardMetadata
 
     class Group
     {
+        public string className;
         public StandardMetadata metadata = new StandardMetadata();
         [JsonConverter(typeof(GroupItemsConverter))]
         public Dictionary<string, IGroupItem> items = new Dictionary<string, IGroupItem>();

com.unity.perception/Tests/Runtime/Randomization/ScenarioTests/Resources/SampleScenarioConfiguration.json

     "randomSeed": 539662031
   },
   "randomizers": {
-    "groups": {
-      "RotationRandomizer": {
+    "groups": [
+      {
+        "className": "RotationRandomizer",
         "metadata": {
           "name": "",
           "description": "",
           }
         }
       }
-    }
+    ]
   }
 }