Shoot8Dir.cs

using UnityEngine;
using System.Collections;

public class Shoot8Dir : MonoBehaviour {

	Vector2 dir;
	public float speed=5f;
	public GameObject projectile;
	public float offsetFromPlayer=1;
	// Use this for initialization
	void Start () {
	


	}
	
	// Update is called once per frame
	void Update () {
	
		dir.x = Input.GetAxisRaw ("Horizontal");
		dir.y = Input.GetAxisRaw ("Vertical");

		dir.Normalize ();

		if (Input.GetKeyDown (KeyCode.E)) {

			GameObject GO =Instantiate (projectile, (Vector2)transform.position + dir * offsetFromPlayer, Quaternion.identity) as GameObject;

			if (GO.GetComponent<Rigidbody2D> () != null) {
				GO.GetComponent<Rigidbody2D> ().velocity = dir * speed;
			} else {
				Debug.LogWarning ("Bullet must have Rigidbody2D to have velocity");
			}
		}

	}
}