How do I make a rigidbody 3D wall jump?

Questions & Answers
1

So I’ve made a simple third person parkour script, and want to implement wall jumping, and I’m not sure how to go about doing it.
Here’s how I detect wall collision:

void OnCollisionEnter(Collision collision)

    foreach (ContactPoint contact in collision.contacts)
    {
        if (!onGround && rb.position.y > -16f)
        {
            Debug.DrawRay(contact.point, contact.normal, Color.red, 10f);
        }
    }
}

And heres my movement script:

void Update()
{
    if (Input.GetKeyDown(KeyCode.Space) && onGround == true)
    {
        speed = jumpSpeed;
        onGround = false;
        rb.AddForce(jump * jumpForce, ForceMode.Impulse);
    }
}

void FixedUpdate()
{
    moving = Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.D);

    if (moving)
    {
        transform.rotation = Quaternion.Euler(0, Camera.rotation.eulerAngles.y, 0);
    }

    float x = Input.GetAxisRaw("Horizontal");
    float y = Input.GetAxisRaw("Vertical");

    Vector3 move = (transform.right * x + transform.forward * y);
    move.Normalize();
    rb.velocity = new Vector3(move.x * speed * Time.deltaTime, rb.velocity.y, move.z * speed * Time.deltaTime);

    onGround = Physics.CheckSphere(new Vector3(transform.position.x, transform.position.y - 1, transform.position.z), spSize, Ground);
}

Any answers would be greatly appreciated, sorry if this is a stupid question I’m pretty new to Unity.

2

Don’t use OnCollision, use Raycasting.

Say you you’ll only wall jump if you’re facing the wall. In this case, Cast some rays to detect a wall in front of your character. If it detected a wall and it’s not grounded, apply the jump force to the desired direction.

I’d also recommend short rays cast from your character feet to detect ground.