Rotate towards an object in 2D

Questions & Answers
1

Hey, so I want an object to always rotate towards another, but to smoothly turn towards it over time. At the current moment, I have this

    void Update()
    {
        spear.transform.right = Vector2.Lerp
            (spear.transform.position, 
            player.transform.position - spear.transform.position, 
            Time.deltaTime * turnSpeed);
    }

I figure it would work fine, but it only works if turnSpeed is a high number (>80), and at that point it’s too fast. If it’s lower than that, the z rotation will flicker, or be stuck between ~-10 to ~10 at lower numbers. I’m sure there’s a better way to do this, but I am curious as to why this isn’t working, and why it’s acting the way it is.

Thanks for the help!

2

Figured it out!

void Update()
{
    //testing quats
    Vector3 dir = 
        player.transform.position - spear.transform.position;
    Quaternion rot = 
        Quaternion.LookRotation(Vector3.forward, dir);
    spear.transform.rotation = 
        Quaternion.Lerp(spear.transform.rotation, rot, Time.deltaTime * turnSpeed);
}

Couldn’t figure out how to get Quaternions to work in a 2D space before, was always giving me problems. Anyways, I’m still confused as to why my original code acted the way it did.