How to move a character in one direction only when jumping?

Questions & Answers
1

I’m trying to figure out how to make it so that my 2d character can only move the direction the player jumped instead of being able to go all over the place. I am extremely new to unity and C#, so I’m not even sure where to begin. I have walking and jumping down so far, and it looks like this:

public class Zanecontroller : MonoBehaviour {

	public float footspeed;
	public float jumpheight;

	public Transform groundcheck;
	public float groundcheckradius;
	public LayerMask whatisground;
	private bool grounded;

	void Start () {
	
	}
	void FixedUpdate () {
		grounded = Physics2D.OverlapCircle (groundcheck.position, groundcheckradius, whatisground);
	}


	void Update () {
	
		if (Input.GetKeyDown (KeyCode.Space) && grounded) {
			GetComponent<Rigidbody2D> ().velocity = new Vector2 (GetComponent<Rigidbody2D> ().velocity.x, jumpheight);
	
		}
		if (Input.GetKeyDown (KeyCode.A)) {
			GetComponent<Rigidbody2D> ().velocity = new Vector2 (-footspeed, GetComponent<Rigidbody2D> ().velocity.y);
		}

		if (Input.GetKeyDown (KeyCode.D)) {
			GetComponent<Rigidbody2D> ().velocity = new Vector2 (footspeed, GetComponent<Rigidbody2D> ().velocity.y);
		}
	}

}

Thank you for you help!

2

private float h;
private bool FacingLeft;
Rigidbody2D rgb; // make instance for Rigidbody2D .

void Start(){
	rgb = GetComponent<Rigidbody2D> (); // get Rigidbody2D component once @ Start .
}

void Update () {
	if (Input.GetKeyDown (KeyCode.Space) && grounded) {
		rgb.velocity = new Vector2 (rgb.velocity.x, jumpheight);
	}

	h = Input.GetAxis ("Horizontal"); // move only when input 

	if (h < 0 && grounded) {
		FacingLeft= true;
		if(FacingLeft)
			rgb.velocity = new Vector2 (h * footspeed, rgb.velocity.y);
	}

	if (h > 0 && grounded) {
		FacingLeft= false;
		if(!FacingLeft)
			rgb.velocity = new Vector2 (h * footspeed, rgb.velocity.y);
	}
}