ConfigNode Issues with a couple of Vector Types

[TriggerAu]

I've been fiddling around with the ConfigNode type a fair bit in the last few days and have struck an issue that I was wondering if anyone else has struck. Any ideas would be much appreciated.

I am doing this from code for a plugin and so using the ConfigNode.CreateConfigFromObject and ConfigNode.LoadObjectFromConfig to load/save an object and have the code structure worked out. I then tried to do this against all the types in the Parse functions - String, Bool, Enum, Vector2, Vector3, Vector3d, Vector4, etc. and I struck an issue with the Vector2 and vector3d types.

In a nutshell the short version of code looks like this and the String is successfully saved into the test.cfg file and loaded back from it - I can rem out the save line and edit the file and get the right value.

public class Storage
    {
        [Persistent] String TestString = "New String";
    }
...
    [KSPAddon(KSPAddon.Startup.MainMenu, false)]
    public class PersistingDataErrors: MonoBehaviour
    {
        Storage sTest = new Storage();
        void Awake()
        {
                ConfigNode cnToSave = ConfigNode.CreateConfigFromObject(sTest, new ConfigNode());
                cnToSave.Save(AssemblyPath + "/Test.cfg");

                ConfigNode cnToLoad = ConfigNode.Load(AssemblyPath + "/Test.cfg");
                ConfigNode.LoadObjectFromConfig(sTest, cnToLoad);

        }
    }

I can replace the String with a Vector3, Enum, Boolean and it all works as expected, but if I replace it With a Vector3d then on the save I get an Error "Cannot cast from source type to destination type.", but I can load a Vector3d.

If I try a Vector2, then the save part works, but on a load I get "Object type UnityEngine.Vector3 cannot be converted to target type: UnityEngine.Vector2"

I've tested using the Parse/Write functions for the two types and they work successfully to read write between a string and the specific object, but from the serialising functions I cant make these two work.

A full plugin source demonstrating it can be found here - https://ksppluginframework.codeplex.com/SourceControl/latest#Examples/PersistingDataErrors/PersistingDataErrors.cs

Any ideas or help would be ace.

[theSpeare]

(don't really have anything to help but I have a question)

Since you're tinkering around with this and you definitely know a lot more about this than me but could you please explain how I could go about reading multiple nodes that are identical?

values

{

var_1 = 0;

var_2 = 20;

var_3 = 35;

}

values

{

var_s = 2;

}

values

{

var_2 = 21;

var_4 = 2;

}

[taniwha]

Trigger Au: I don't know about Vector2, but Vector3d is a KSP type, and it doesn't even have Parse methods.

theSpeare: you use ConfigNode []values = node.GetNodes ("values");

That will give you a potentially empty list of the matching nodes (ie, values{}).

[TriggerAu]

Hi taniwha, thanks for the response I did think that might be it originally, but looking at the ConfigNode Class in VS's Object Browser you can see these two methods so I think it should work:

public static Vector3d ParseVector3D(string vectorString)
public static string WriteVector(Vector3d vector)

I also used those to test the parse/writes to and from strings, it just seems to be the serialising function that fails, and only on one action, eg. It will load the Vector3d from a configNode serialised object, just wont write it.

theSpeare: taniwha's answer looks spot on to me, feel free to come back with more questions, although another thread might be a better place - or the developer question mega thread

[TriggerAu]

Just wondering if anybody else have any ideas/info here before I log a bug?

[stupid_chris]

I've encountered something similar lately. The problem I believe comes from the fact Unity does not recognize the type of Vector3d. On my side I was trying to save an array of values as Vector3d in an OnLoad() override. When I set debug logs up, the array was full as expected during loading, but empty when it got to the VAB. The only thing I could do to get it to work was to switch to Vector3 and add a [serializeField] in front of my declared array.

As for parsing, I'd recommend using KSPUtil's ParseVector3d. I've been getting really weird results from ConfigNode's parsers lately, not sure what's up with them.

[TriggerAu]

Thanks Chris, unfortunately if I switch to the other methods I will have to write an object parser and reflect all the properties myself, which is beyond my knowledge.

If its an issue I might log it and use Vector3's for storing Vector3d and Vector2's in the meantime.