Delayed LookAt, but only on one axis

Questions & Answers
1

Hey,
after too many hours of trying multiple solutions, using Slerp, Lerp, LookAt, LookRotation and reading almost every answer on the forums I’m just really confused right now.

Basically what I want to achieve is an object that changes its rotation to look at another object over time. (with “over time” i mean that it should be rotation towards the endrotation and not just look at it every frame)
But this should only be happening on one axis (y-axis in this case).

I would very much appreciate your help.

Thank you in advance :slight_smile:

Patrick

2

Get the direction to the target, but ignore Y. From that direction, get a rotation quaternion. Rotate towards that rotation.

using UnityEngine;

public class LookAtXZ : MonoBehaviour
{
    public Transform lookAt;
    public float degreesPerSecond = 90;

    void LateUpdate()
    {
        if (!lookAt)
            return;

        Quaternion targetRotation = Quaternion.LookRotation(DirectionXZ());
        transform.rotation = Quaternion.RotateTowards(transform.rotation, 
            targetRotation, degreesPerSecond * Time.deltaTime);
    }

    Vector3 DirectionXZ()
    {
        Vector3 direction = lookAt.position - transform.position;
        direction.y = 0; // Ignore Y
        return direction;
    }
}