Self referencing loop when trying to run (in both UI and non-UI)

[gustavoloureirodosreis]

Screenshot below of how it looks like.

Error in version 2022.2.1f1.

Running on Apple Silicon M1 Max.

Just opened the project, updated it to my version, and hit play.

[gustavoloureirodosreis]

Full error:

JsonSerializationException: Self referencing loop detected for property 'normalized' with type 'UnityEngine.Vector2'. Path 'nodes[0].position.normalized'. Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CheckForCircularReference (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonProperty property, Newtonsoft.Json.Serialization.JsonContract contract, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:347) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContainerContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonProperty property, Newtonsoft.Json.Serialization.JsonContract& memberContract, System.Object& memberValue) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:552) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:486) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:181) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:486) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:181) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:486) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:181) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList (Newtonsoft.Json.JsonWriter writer, System.Collections.IEnumerable values, Newtonsoft.Json.Serialization.JsonArrayContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:722) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:187) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract collectionContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:486) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue (Newtonsoft.Json.JsonWriter writer, System.Object value, Newtonsoft.Json.Serialization.JsonContract valueContract, Newtonsoft.Json.Serialization.JsonProperty member, Newtonsoft.Json.Serialization.JsonContainerContract containerContract, Newtonsoft.Json.Serialization.JsonProperty containerProperty) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:181) Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize (Newtonsoft.Json.JsonWriter jsonWriter, System.Object value, System.Type objectType) (at /root/repo/Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs:96) Newtonsoft.Json.JsonSerializer.SerializeInternal (Newtonsoft.Json.JsonWriter jsonWriter, System.Object value, System.Type objectType) (at /root/repo/Src/Newtonsoft.Json/JsonSerializer.cs:1146) Newtonsoft.Json.JsonSerializer.Serialize (Newtonsoft.Json.JsonWriter jsonWriter, System.Object value, System.Type objectType) (at /root/repo/Src/Newtonsoft.Json/JsonSerializer.cs:1046) Newtonsoft.Json.JsonConvert.SerializeObjectInternal (System.Object value, System.Type type, Newtonsoft.Json.JsonSerializer jsonSerializer) (at /root/repo/Src/Newtonsoft.Json/JsonConvert.cs:665) Newtonsoft.Json.JsonConvert.SerializeObject (System.Object value, System.Type type, Newtonsoft.Json.Formatting formatting, Newtonsoft.Json.JsonSerializerSettings settings) (at /root/repo/Src/Newtonsoft.Json/JsonConvert.cs:654) Newtonsoft.Json.JsonConvert.SerializeObject (System.Object value, Newtonsoft.Json.Formatting formatting, Newtonsoft.Json.JsonSerializerSettings settings) (at /root/repo/Src/Newtonsoft.Json/JsonConvert.cs:630) Newtonsoft.Json.JsonConvert.SerializeObject (System.Object value, Newtonsoft.Json.Formatting formatting) (at /root/repo/Src/Newtonsoft.Json/JsonConvert.cs:544) Map.Map.ToJson () (at Assets/Scripts/Map.cs:45) Map.MapManager.GenerateNewMap () (at Assets/Scripts/MapManager.cs:43) Map.MapManager.Start () (at Assets/Scripts/MapManager.cs:35)

[gustavoloureirodosreis]

Solution to this seems related to, if not exactly this: https://github.com/slavaWins/JsonUnityVectors

[silverua]

Hi. Thanks for letting me know! I have a branch called unity-2021-compatible-branch in the repo. Can you please give it a try and let me know if it fixes the issue? I've merged master into it, so it should be up to date.

The solution for your issue on that branch was serializing like this:

var json = JsonConvert.SerializeObject(CurrentMap, Formatting.Indented,
                new JsonSerializerSettings {ReferenceLoopHandling = ReferenceLoopHandling.Ignore});

The new bit compared to the master branch is ReferenceLoopHandling.Ignore.

[gustavoloureirodosreis]

It worked, thank you. I will close it, if needed feel free to re-open :)