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Question by MadJohny · Mar 01, 2014 at 02:52 PM · c#rotationslerplook at

Slerp look at on the y axis?

Hi, I have been looking at some examples for this, but this is not working, I just want the object to look at another object but only rotate around the y axis, but the object looks at the sky isntead. This is the script:

 using UnityEngine;
 using System.Collections;
 
 public class stuff : MonoBehaviour {
 
     public Transform target;
     public float velocity;
     
     void Update () {
         transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(target.transform.position - transform.position), Time.deltaTime * velocity);
     }
 }

Thanks in advance.

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Answer by robertbu · Mar 01, 2014 at 03:07 PM

Remove the 'y' component of the direction you pass to LookRotation().

 void Update () {
    Vector3 dir = target.transform.position - transform.position;
    dir.y = 0.0f;
    if (dir != Vector3.zero) {
        transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(dir), Time.deltaTime * velocity);
    }
 }
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avatar image MadJohny · Mar 01, 2014 at 03:12 PM 0
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Thank you :D, anyway, is there a way to ignore this message? "Look rotation viewing vector is zero" The thing is that the object that the object is supposed to look at can be right in the same position as the other object

avatar image robertbu · Mar 01, 2014 at 03:15 PM 0
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Just don't rotate it if 'dir' is Vector3.zero. I edited my answer.

avatar image MadJohny · Mar 01, 2014 at 03:17 PM 0
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heh makes sense, thanks again

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