Stopping an object's momentum,Stopping a 3d object's momentum

Question

I am working on a VR project in Unity that works with the Oculus Quest. I have gotten past all of the basics of the character and am working on the objects. I am trying to make it so that they are able to respawn after falling off the edge of the floating island that they are on. I found a script that allows this to happen, but the objects that I want to be bouncy are getting stuck in an infinite loop of bouncing higher and higher and then respawning if they fall off the edge. I want to know if there is a way to stop the object's momentum when it respawns, or if there is another way to fix this.

Current script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class ObjectRespawn : MonoBehaviour
 {
   public float threshold = -50f;
  
      void FixedUpdate () {
          if (transform.position.y < threshold)
              transform.position = new Vector3(0, 1, 1);
      }
  }

Answer 1

Answer by chor64 · Jun 03, 2020 at 04:50 AM

Just get the rigidbody and set the velocity to zero, like so:

 Rigidbody rb = GetComponent<Rigidbody>();
 rb.velocity = Vector3.zero;
 rb.angularVelocity = Vector3.zero;

If you're using this script on something that doesn't have a rigidbody, before setting the values, check if rb is not null.

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Stopping an object's momentum,Stopping a 3d object's momentum

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