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updated the code to reflect what I'm using

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edited Sep 26, 2024 at 20:05

I like the XR Hands visualizer, but I'm wondering if I can just use the mesh from the hands as a trigger when they collide with an object. Is this possible? I tried it without success. I just want logic to trigger if a hand is "touching" an object at any point. I have a feeling that the mesh inside these hands is just for visualization. If so, maybe I could use the bone/joint structure as a collider?

This is the script I want to attach to some simple cube game objects, and give them box colliders and rigid bodies, and have them become children of a hand once touched. If this works, then I could add an if-statement to say, if the hand is in a grip-pose. I want to avoid using the XR Interaction pre-made actions because of some custom functions I have in mind.

using UnityEngine;

public class ChildOnCollision : MonoBehaviour
{
    private void OnCollisionEnterOnTriggerEnter(CollisionCollider collisionother)
    {
        // Check if the collidedother object has the tag "grab""Grab"
        if (collision.gameObjectother.CompareTag("Grab"))
        {
            // Make thisthe other object a child of thethis handobject's objecttransform
            transform.SetParent(collisionother.transform); 

            // Optionally, reset the local position and rotation
            transform.localPosition = Vector3.zero;
            transform.localRotation = Quaternion.identity;
        }
    }
}

using UnityEngine;

public class ChildOnCollision : MonoBehaviour
{
    private void OnCollisionEnter(Collision collision)
    {
        // Check if the collided object has the tag "grab"
        if (collision.gameObject.CompareTag("Grab"))
        {
            // Make this object a child of the hand object
            transform.SetParent(collision.transform);
            // Optionally, reset the local position and rotation
            transform.localPosition = Vector3.zero;
            transform.localRotation = Quaternion.identity;
        }
    }
}

using UnityEngine;

public class ChildOnCollision : MonoBehaviour
{
    private void OnTriggerEnter(Collider other)
    {
        // Check if the other object has the tag "Grab"
        if (other.CompareTag("Grab"))
        {
            // Make the other object a child of this object's transform
            transform.SetParent(other.transform); 

            // Optionally, reset the local position and rotation
            transform.localPosition = Vector3.zero;
            transform.localRotation = Quaternion.identity;
        }
    }
}

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asked Sep 26, 2024 at 19:54

Wes Tomer

XR Hands - Mesh Trigger

using UnityEngine;

public class ChildOnCollision : MonoBehaviour
{
    private void OnCollisionEnter(Collision collision)
    {
        // Check if the collided object has the tag "grab"
        if (collision.gameObject.CompareTag("Grab"))
        {
            // Make this object a child of the hand object
            transform.SetParent(collision.transform);
            // Optionally, reset the local position and rotation
            transform.localPosition = Vector3.zero;
            transform.localRotation = Quaternion.identity;
        }
    }
}