how to clone several game objects in a way that clone properties of one can be adjusted to match all others in scene view

Question

I asked How can I adjust shape/dimensions of one clone to affect all other clones in the scene view and the accepted answer was spot on. It could only clone one game object.

Answer 1

Create script CopycatManager that will hold a leader and then use dedicated setters for copying the other object properties that have the same type. If a property is a default one may need to set up either a proxy of such property within' the script or play with triggers. I would recommend proxy. Like this:

class CopycatManager {

    public GameObject leader;

    SomeAttributeType attributeToCopyFromLeader {get; private set}

    void Start () {
        // The first CopycatManager to start is the leader
        List<CopycatManager> allCMs = parent.GetComponentsInChildren();
        CopycatManager foundLeader = allCMs.Find(o => o.leader == o);
        if (foundLeader == null) {
            // There's no leader yet, set yourself a leader
            leader = this;
        } else {
            // Found a leader, accept
            leader = foundLeader;
        }
    }

    public void SetAttribute (SomeAttributeType newVal) {
        // If we're setting the attribute of the leader - we should set this attribute for all children
        if (leader == gameObject) {
            // Find all copycat manager scripts attached to children of current parent
            // Meaning siblings
            // WARNING: It will include children of siblings and the leader itself
            // WARNING: It will not include parents of the Copycat Manager type, add if required
            List<CopycatManager> allCMs = parent.GetComponentsInChildren();
            foreach (CopycatManager manager in allCMs) {
                SetAttributeFromLeader (newVal);
            }
        } else {
            // Non-leader is attempting to change attribute - call leader
            leader.SetAttribute(newVal);
        }
    }

    // Called by leader to each child
    public void SetAttributeFromLeader (SomeAttributeType newVal) {
        attributeToCopyFromLeader = newVal;
    }
}

Make sure to assign a new leader if the old one destroyed. Only destroy objects with CopycatManager through dedicated function.

Answer 2

use a singleton class. add that script to all the objects, then you can make a call to one and it will adjust all of them.

you can also do this with a static class, but the singleton approach is cleaner, and gives you more options.

public class MySingleton
{

    private static MySingleton fetch; // keep the static reference private

    public bool myBool = false;

    // and expose static members through properties
    // this way, you have a lot more control over what is actually being sent out.
    public static bool MyBool { get { return fetch ? fetch.myBool : false; } }

    void Awake()
    {
        fetch = this;
    }
}

read here for some great information on both options!