How do I move a unit one grid-square-width per button press in Unity3D?

How do I move a unit one grid-square-width per button press in Unity3D?

I'm learning Unity. I'm making a 2D top down Frogger-esque game. I was wondering how you would go about making the player move x pixels per button press.
I have this code to move him, currently with a float for x and y inputs, so he moves slowly:
    Vector2 movement_vector = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));

    if (movement_vector != Vector2.zero)
    {
        anim.SetBool("isWalking", true);
        anim.SetFloat("input_x", movement_vector.x);
        anim.SetFloat("input_y", movement_vector.y);
    }
    else
    {
        anim.SetBool("isWalking", false);
    }

    rbody.MovePosition(rbody.position + movement_vector * Time.deltaTime);

Solutions/Answers:

Answer 1:

I think the best way to approach this would be to create a grid system where each square is 64×64 pixels, and then have your button press increment the square number. So the frog technically moves 64 pixels, but in code all you’d be doing is saying gridSquaresX + 1 or something.

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