How can I make an enemy bounce off the wall, but not the player, in Unity 2D?

Questions & Answers
1

I’m making a top down dungeon crawler game and I want the enemies to bounce off the wall when they hit it. However, I don’t want this to happen to the player. I also don’t want the enemies to bounce off other objects, like the player. What can I do to make this work?

2

If you want different bounciness depending on the hit object, you can’t use a simple OhysicMaterial anymore, but have to use a script.

Just implement OnCollisionEnter2D:

private Rigidbody2D rb2D;

private void Awake()
{
    rb2D = GetComponent<Rigidbody2D>();
}

private void OnCollisionEnter2D(Collision2D collision)
{
    var bounciness = 0f;

    if(collision.collider.CompareTag("Player")) // replace check with whatever
    {
        bounciness = 1;
    }

    rb2D.velocity += collision.relativeVelocity * bounciness;
}