Deep copy of the list

Question

This should be a fairly simple problem to solve, however I tried several ways to do this, but the results are always the same.

I am trying to copy a list containing GameObjects to another list. The problem is that I copy the links, since any changes made to the GameObjects of the original list also affect the ones in the new list that I don’t want. From what I read, I am making a shallow copy instead of a deep copy, so I tried using the following code to clone each object:

public static class ObjectCopier
    {
        /// <summary>
        /// Perform a deep Copy of the object.
        /// </summary>
        /// <typeparam name="T">The type of object being copied.</typeparam>
        /// <param name="source">The object instance to copy.</param>
        /// <returns>The copied object.</returns>
        public static GameObject Clone<GameObject>(GameObject source)
        {

            if (!typeof(GameObject).IsSerializable)
            {
                throw new ArgumentException("The type must be serializable ", "source: " + source);
            }

            // Don't serialize a null object, simply return the default for that object
            /*if (Object.ReferenceEquals(source, null))
            {
                return default(GameObject);
            }*/

            IFormatter formatter = new BinaryFormatter();
            Stream stream = new MemoryStream();
            using (stream)
            {
                formatter.Serialize(stream, source);
                stream.Seek(0, SeekOrigin.Begin);
                return (GameObject)formatter.Deserialize(stream);
            }
        }
    }

I get the following error:

ArgumentException: type must be serializable. Parameter name: source: SP0 (UnityEngine.GameObject) ObjectCopier.Clone [GameObject] (Source UnityEngine.GameObject) (in Assets /Scripts/ScenarioManager.cs: 121)

:

    void SaveScenario(){
        foreach(GameObject obj in sleManager.listOfSourcePoints){
            tempObj = ObjectCopier.Clone(obj);

            listOfScenarioSourcePoints.Add(tempObj);
            Debug.Log("Saved Scenario Source List Point");
        }
        foreach(GameObject obj in sleManager.listOfDestPoints){
            tempObj = ObjectCopier.Clone(obj);
            listOfScenarioDestPoints.Add(tempObj);
            Debug.Log("Saved Scenario Dest List Point");
        }
    }

    void LoadScenario(){
        sleManager.listOfSourcePoints.Clear();
        sleManager.listOfDestPoints.Clear ();
        foreach(GameObject obj in listOfScenarioSourcePoints){
            tempObj = ObjectCopier.Clone(obj);
            sleManager.listOfSourcePoints.Add(tempObj);
            Debug.Log("Loaded Scenario Source List Point");
        }
        foreach(GameObject obj in listOfScenarioDestPoints){
            tempObj = ObjectCopier.Clone(obj);
            sleManager.listOfDestPoints.Add(tempObj);
            Debug.Log("Loaded Scenario Dest List Point");
        }
    }

:

if (child.name == "DestinationPoints")
{
     parentDestinationPoints = child.gameObject;
     foreach (Transform grandChildDP in parentDestinationPoints.transform)
     {
          //Debug.Log("Added DP object named: " + grandChildDP.name);
          tempObj = grandChildDP.gameObject;
          listOfDestPoints.Add(tempObj);
          tempObj.AddComponent<DestinationControl>();
          tempObj.transform.renderer.material.color = Color.white;
     }
}

// Hide all SourcePoints in the scene
if (child.name == "SourcePoints")
{
    parentSourcePoints = child.gameObject;
    foreach (Transform grandChildSP in parentSourcePoints.transform)
    {
         tempObj = grandChildSP.gameObject;
         listOfSourcePoints.Add(tempObj);
         tempObj.transform.renderer.enabled = false;
    }
}

"tempObj" [SerializeField], - . .

EDIT: , Unity3D.

Answer 1

, GameObject, [Serializable]. clone , :

/// <summary>
/// Creates a deep clone of an object using serialization.
/// </summary>
/// <typeparam name="T">The type to be cloned/copied.</typeparam>
/// <param name="o">The object to be cloned.</param>
public static T DeepClone<T>(this T o)
{
    using (MemoryStream stream = new MemoryStream())
    {
        BinaryFormatter formatter = new BinaryFormatter();
        formatter.Serialize(stream, o);
        stream.Position = 0;
        return (T)formatter.Deserialize(stream);
    }
}

, .

---

. , , -

class A
{
    // copy constructor
    public A(A copy) {}
}

// A referenced class implementing 
class B : IDeepCopy
{
    object Copy() { return new B(); }
}

class C : IDeepCopy
{
    A A;
    B B;
    object Copy()
    {
        C copy = new C();

        // copy property by property in a appropriate way
        copy.A = new A(this.A);
        copy.B = this.B.Copy();
     }
}

Copyable, , . , , ...

Answer 2

Instantiate Unity , : http://docs.unity3d.com/Documentation/ScriptReference/Object.Instantiate.html?from=MonoBehaviour

var clone = Object.Instantiate(source);

Answer 3

I think that I was too complicated, ended up storing the values ​​(the position of the game objects) that I needed in the XML file (in any case, I had to do this at some point). Thanks for the help.