Distance Variable Not Returning Value/Ray not casting

Hi guys,

Been working on a script to find the nearest object named 'Weapon' and pull it towards the player when a bool becomes true- I'll develop this further once I've got it working, but at the moment I'm debugging with a raycast between the two objects.

However, for some reason when I set the bool 'attach_weapon' to true, my function for dealing with the location of the objects doesn't work and a ray isn't cast. I've checked and the public float distance_local doesn't come back with anything.

My maths tells me subtracting the final vector from the initial vector gives the direction between objects and that I can calculate this as a distance as I have in the other part of the script using Mathf.Abs(MyVector.sqrtMagnitude). Here is my script so far.

Thank you for your time!

Popuppirate

 using UnityEngine;
 using System.Collections;
 
 public class Weapon_Control_Script : MonoBehaviour {
 
     public GameObject closest_weapon;
     public bool attach_weapon;
     public float distance;
     public float distance_local;
      
 
 
     // Use this for initialization
     void Start () {
     attach_weapon = false;
     }
 
     
     // Update is called once per frame
     void Update () {
         if (attach_weapon == false) {
             SearchForWeapons();        
         }
 
         if (attach_weapon == true) {
             AttachWeapon();    
         }
 
 }
 
 
 void AttachWeapon(){ //Look Here!
 
 
         Vector3 player_vect = new Vector3 (transform.position.x, transform.position.y, transform.position.z);
         Vector3 weapon_vect = new Vector3 (closest_weapon.transform.position.x,closest_weapon.transform.position.y,closest_weapon.transform.position.z);
         Vector3 direction = (weapon_vect - player_vect);
         float distance_local = Mathf.Abs (direction.sqrMagnitude);
         Debug.DrawRay (player_vect, direction*distance_local, Color.green,1f);
         //closest_weapon.rigidbody.AddForce (-direction * 4);
 }
 
 
 void SearchForWeapons(){ //This works lovely jubly
     GameObject[] weapons = GameObject.FindGameObjectsWithTag ("Weapon");                     
     distance = Mathf.Infinity;                                                            
     for (int i=0; i<weapons.Length; i++) {
         Can_Pick_Up canpickupscript=weapons[i].GetComponent<Can_Pick_Up>();
             if (canpickupscript.can_pick_up==true){
                 Vector3 diff_vect = weapons [i].transform.position - transform.position;            
                 float diff_abs = Mathf.Abs (diff_vect.sqrMagnitude);                                
                 if (diff_abs < distance) {                                                            
                     closest_weapon = weapons [i];                                                    
                     distance = diff_abs;                                                            
                 }
             }
             
         }
         Debug.Log (closest_weapon.name);
 }
 
 
     
 }