How to Make An Object Mirror Another Object

Unity Engine
1

I want to create a rather simple program. I just want to have two objects on the screen (for testing I am just using two pictures of boxes) mirror movements. So when I use the keyboard to move one object, the other object mirrors the movement. For example, if I move one object right, the other object would move left. But if I move one object up, the other object would also move up.
I have tried a couple of different approaches but can’t seem to get anywhere even remotely productive. Can anyone please steer me in the right direction?

2

If you need the actual inputs mirroring, then depending on how you move the object, determine which axis you want it to be mirrored.

E.g. apply movement on -transform.right instead of transform.right to mirror movement on X axis.
And apply the rest of the movement as is for the YZ axis.

3

You can simply use Vector3.LerpUnclamped. You set object b position twice the distance from object a to a mirror point. You could also add an offset in there if you don’t want it perfectly mirrored.

using UnityEngine;

public class MirrorObject : MonoBehaviour
{
    public Transform ObjA;
    public Transform ObjB;

    public Transform MirrorPoint;

    private void Update()
    {
        ObjB.position = Vector3.LerpUnclamped(ObjA.position, MirrorPoint.position, 2f);
    }
}
1 Like
4

Thank you so much, this seems perfect. Admittedly I will need to do a little research on the concept of Lerp to make sure that I fully understand the how and why this works, but it is perfect for getting started.