My player doesn't jump high enough.,My player doesn't jump exact.

Questions & Answers
1

I’m trying to make player jump a fixed distance but it isn’t exact what I want.
Here is my code:

float jumpDistance = 1.5f;
bool jump;
Rigidbody2D rgb;

// Start is called before the first frame update
void Start()
{
    rgb = GetComponent<Rigidbody2D>();
}

// Update is called once per frame
void Update()
{
    if (Input.GetButtonDown("Jump"))
    {
        jump = true;
    }
}

private void FixedUpdate()
{
    if (jump)
    {
        jump = false;
        rgb.AddForce(Vector2.up * GetJumpForce(), ForceMode2D.Impulse);
    }
}

float GetJumpForce()
{
    return Mathf.Sqrt(2f * Physics2D.gravity.magnitude * rgb.gravityScale * jumpDistance) * rgb.mass;
}

When I jump, my player can only get 1.44 height

2

The way you fix this is to NOT use rigid body, because this just adds a force. Instead
use transform.translate.