Rigidbody velocity disables gravity

Questions & Answers
1

Hello,

I have this script that moves a rigidbody along to its local z axis.
The problem is that it disables gravity.
How can I fix this?

rigidbody.velocity = transform.forward * Input.GetAxis("Vertical") * speed * Time.deltaTime;
2

Try this:

var v = transform.forward;
v.y = 0.0;
v.Normalize();
v *= Input.GetAxis("Vertical") * speed * Time.deltaTime;;
v.y = rigidbody.velocity.y;
rigidbody.velocity = v;