Adding a gameObject in an object in Unity3D

Question

The question might seem a little too weird but I want to add the object "Capsule" to my gameobject using script (see the photo below)

This is my code for adding components in my object:

object1 = (GameObject)Resources.Load (name) as GameObject;
        myObject = Instantiate (object1);
        myObject.transform.SetParent (parent.transform);
        myObject.transform.position = new Vector3 (0, 0, 0);
        myObject.transform.localScale = new Vector3 (70f, 70f, 70f);
        myObject.AddComponent<BoxCollider> ();
        myObject.AddComponent<CapsuleCollider> ();
        myObject.AddComponent<MeshRenderer> ();

        myObject.gameObject.SetActive (true);

What could be the possible solution for this? Thank you very much!

I want myObject to add the "Capsule" as a component. Is that possible? — Sarah
– Sarah, Commented Mar 23, 2017 at 17:30
It is not possible to add it as a Component. Do you mean as a children? — Ludovic Feltz
– Ludovic Feltz, Commented Mar 23, 2017 at 17:31
What does not work in your code? Do you have any error? Does SetParent works? We need more information about your issue here — Ludovic Feltz
– Ludovic Feltz, Commented Mar 23, 2017 at 17:34

Foggzie · Accepted Answer · 2017-03-23 17:57:53Z

3

There seems to be a misunderstanding of what "Adding a GameObject" means so lets break this down. In Unity, a GameObject is a Transform and a collection of "Components". That Transform can be the "parent" or "child" of another Transform. GameObjects and their "Transform Heirarchy" are what's displayed in the "Heirarchy" Unity window. A single GameObject and its "Components" (things that implement MonoBehaviour) are what's displayed in the the "Inspector" Unity window.

By these terms, you cannot "Add a GameObject to another GameObject" however you can "Add a GameObject as a child of another GameObject" by parenting one Transform to another.

It seems like what you're trying to do here is add your "Capsule" as a child of each of your GameObjects. All you need to do in this case is, for each GameObject, instantiate a new instance of the "Capsule" (it could be setup as a prefab) and parent it to your GameObjects:

public class CapsuleAdder : MonoBehaviour {
    private const string capsulePrefabName = "whatever"; // Prefab name goes here

    void Awake() {
        GameObject newCapsule = Instantiate(Resources.Load(capsulePrefabName) as GameObject) as GameObject;
        newCapsule.transform.SetParent(transform); // Sets parent to this
    }
}

As long as you properly set capsulePrefabName, any GameObject with this script attached will spawn a copy of your capsule prefab as a child.

edited Mar 23, 2017 at 17:57

answered Mar 23, 2017 at 17:51

Foggzie

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3 Comments

Sarah Over a year ago

should my capsule be added in the resources folder?

Foggzie Over a year ago

@Sarah Yes. Resources.Load will only work for assets in a "Resources" folder.

Foggzie Over a year ago

@Sarah I also forgot the call to Instantiate in my first pass. Edited the answer.

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