Script problem : beat'em up

Hello, I'm quite a noob using C# and I want to create a melee attack in a beat them up game. I use a script from a 2d platformer but i've got 2 problems, the first one is that I put a coroutine in my script and this coroutine fails to reload after one attack, the other problem is that my attack represented as a gameobject is created on the same location as my character and I want it to spawn in front of my character. This is the script I use : using UnityEngine; using System.Collections;

public class Player : MonoBehaviour { // Déclaration de la variable de vitesse public float m_speed = 0.1f; public int jumpPower = 350; // Puissance saut private bool canJump = true; // Peut on sauter ?

 bool canFire = true;

 fire scriptFire;

 enum dir
 {
     LEFT = -1,
     RIGHT = 1
 };

 dir direction = dir.LEFT;

 // Use this for initialization
 void Start () {

     scriptFire = GetComponentInChildren<fire>();
 }

 // Update is called once per frame
 void Update()
 {
     // Création d'un nouveau vecteur de déplacement
     Vector3 move = new Vector3();

     // Récupération des touches haut et bas
     if (Input.GetKey(KeyCode.UpArrow))
         move.z += m_speed;
     if (Input.GetKey(KeyCode.DownArrow))
         move.z -= m_speed;

     // Récupération des touches gauche et droite
     if (Input.GetKey(KeyCode.LeftArrow))
         move.x -= m_speed;
     if (Input.GetKey(KeyCode.RightArrow))
         move.x += m_speed;

     // On applique le mouvement à l'objet
     transform.position += move;

     if (Input.GetKeyDown(KeyCode.Space))
     {
         if (canJump)
         {
             canJump = false;
             StartCoroutine(jump()); // On saute
         }
     }

     if (Input.GetKeyDown(KeyCode.LeftControl) && canFire == true)
     {
         canFire = false;
         StartCoroutine("reload");
         scriptFire.shoot((int)direction);
     }


 }

 IEnumerator jump()
 {
     GetComponent<Rigidbody>().AddForce(Vector3.up * jumpPower);
     yield return new WaitForSeconds(1);
     canJump = true;

     yield return new WaitForSeconds(0.5f);
     canFire = true;
 }

}

And this is the second part of the script :

using UnityEngine; using System.Collections;

public class fire : MonoBehaviour {

 public GameObject missile;

 public void shoot(int dir)
 {
     GameObject go = Instantiate(missile, transform.position, Quaternion.identity) as GameObject;
     go.GetComponent<Rigidbody>().velocity = new Vector2(4 * dir, 0);
     if (dir == -1)
         go.transform.localScale = new Vector3(go.transform.localScale.x * -1, go.transform.localScale.y, 1);
     Destroy(go, 0.33f);
 }

}

Thank you Mojo