MouseLook Script "Pops" back to the last value when the script is enabled after being disabled or destroyed

Game Development Asked by cyo on January 7, 2022

I am trying to get a problem with a MouseLook script that controls my camera and a LookatGameObject script that also controls my camera when I want to force the player to look in a certain direction under control, but still no luck. I have identified where the issue is – Line 43, transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0); is the the method that sets the X Axis, makes it “POP” back to the last value when the script is enabled (I have even destroyed the component and then added the component when needed but the same result) can anyone see a solution for this?

The MouseLook Script:

 using UnityEngine;
 using System.Collections;

 [AddComponentMenu("Camera-Control/Mouse Look")]
 public class MouseLook : MonoBehaviour

     public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
     public RotationAxes axes = RotationAxes.MouseXAndY;
     public float sensitivityX = 15F;
     public float sensitivityY = 15F;

     public float minimumX = -360F;
     public float maximumX = 360F;

     public float minimumY = -60F;
     public float maximumY = 60F;

     float rotationY = 0F;

     void Update()
         if (axes == RotationAxes.MouseXAndY)
             float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;

             rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
             rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);

             transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
         else if (axes == RotationAxes.MouseX)
             transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
             rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
             rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);

             transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);

Here is my LookAtGameObjectScript:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;

 public class LookAtGameObject : MonoBehaviour
     public Transform target;
     public float speed = 5f;

     // Update is called once per frame
     void Update()

         Vector3 direction = target.position - transform.position;
         Quaternion rotation = Quaternion.LookRotation(direction);
         transform.rotation = Quaternion.Lerp(transform.rotation, rotation, speed * Time.deltaTime);

And And my method for turning off MouseLook and Turning on LookAtGameObject:

private IEnumerator LookAtGameObject()

         GameObject.FindWithTag("MainCamera").GetComponent<MouseLook>().enabled = false;
         GameObject.FindWithTag("MainCamera").GetComponent<LookAtGameObject>().enabled = true;

         yield return new WaitForSeconds(8f);

         GameObject.FindWithTag("MainCamera").GetComponent<LookAtGameObject>().enabled = false;
         GameObject.FindWithTag("MainCamera").GetComponent<MouseLook>().enabled = true;

         yield return null;

One Answer

It looks like all you need is an OnEnable method to update the internal state when the script is switched back on:

float lastEnabledTime = float.negativeInfinity;
float limitEaseSeconds = 3f;

void OnEnable() {
    rotationY = transform.localEulerAngles.y;
    lastEnabledTime = Time.time;

Saving the last enabled time lets us gradually re-introduce our rotation limits inside Update, by first calculating our current limits for this frame:

float limitBlend = Mathf.Clamp01((Time.time - lastEnabledTime)/limitEaseSeconds);

float currentMin = Mathf.Lerp(-180, minimumY, limitBlend);
float currentMax = Mathf.Lerp(180, maximumY, limitBlend);


rotationY = Mathf.Clamp(rotationY, currentMin, currentMax);

Answered by DMGregory on January 7, 2022

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