Structs are acting like Reference types for some reason.

Questions & Answers
1

I am working on a small system for my game, I want to be able to have a central registry to store base " objects " to spawn in my game, I want to then have a data which is universally used across all items, this is SpawnableData, this has " parameter " structs which I can serialize into an XML, the problem I am having is, whenever I make a new instance of my spawnable class, for some reason, its data acts like a struct. whenever I edit one of them, it automatically edits every other one in the scene. I have tried Instantiating new instances and I have also tried building new gameobjects, attaching components and assigning data manually, whatever I do, it always seems to reference its data to one central source, which I am confused with.

Any help would be greatly appreciated with this issue, I have tried multiple times with different ways to try and stop this but for some reason, the data is always being referenced from the same place, no matter what I do.

Here are the classes I am using which are related to the issue :

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class Spawner : MonoBehaviour
{
    public int spawnableID;
    public SpawnableData data;
    public bool customData;

    void Start()
    {
        spawn();
        spawn();
    }

    public Spawnable spawn()
    {
        GameObject obj = new GameObject();
        Spawnable inst = obj.AddComponent<Spawnable>();

        if (customData)
        {
            Parameter[] parameters = new Parameter[data.parameters.Length];
            parameters = data.parameters;
            inst.data = new SpawnableData();
            inst.data.parameters = parameters;
        }
        return inst;
    }
}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class SpawnableRegistry : MonoBehaviour
{
    static Spawnable[] registry;

    void Awake()
    {
        populateRegistry();
    }

    public static Spawnable getSpawnable(int spawnableID)
    {
        return registry[spawnableID];
    }

    void populateRegistry()
    {
        registry = Resources.LoadAll<Spawnable>("Spawnable");
    }

}

using UnityEngine;
using System.Collections;

[System.Serializable]
public struct Parameter 
{
    public string data;
    public DataType dataType;
}

using UnityEngine;
using UnityEditor;
using System.Collections;

[System.Serializable]
public struct SpawnableData
{
    public Parameter[] parameters;
}

using UnityEngine;
using System.Collections;

public class Spawnable : MonoBehaviour
{
    public int spawnableID;
    public SpawnableData data;

    public virtual SpawnableData save()
    {
        return data;
    }

    public virtual void load(SpawnableData loadedData)
    {
        data = loadedData;
    }

    // To test the data
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.P))
        {
            for(int i = 0; i < data.parameters.Length; i++)
            {
                Debug.Log(data.parameters*.data);*

}
}
}
}

2

It looks like the problem is on line 25 of your Spawner class. Structs may be value types, but arrays are not, so when you set parameters = data.parameters;, your parameters are still referencing the same array. Instead, do this:

data.parameters.CopyTo(parameters,0);