LineRenderer Raycast Gun Bug

Questions & Answers
1

I have an issue with the LineRenderer component and when I try to implement it into script so that it acts as a visible ray.

Heres the code of the gun that fires the ray:

using UnityEngine;
using System.Collections;

[RequireComponent (typeof (AudioSource))]
public class dev_ray_shoot : MonoBehaviour {

public enum GunType {Semi,Burst,Auto};
public GunType gunType;
public float rpm;

//Components
public Transform rayExit;
private LineRenderer tracer;

//System
private float secondsBetweenShots;
private float nextPossibleShootTime;

void Start() {
	secondsBetweenShots = 60/rpm;
	if (GetComponent<LineRenderer>()){
		tracer = GetComponent<LineRenderer>();
	}
}

public void Shoot() {
	if (CanShoot()){
		Ray ray = new Ray(rayExit.position,rayExit.forward);
		RaycastHit hit;
		
		float rayDistance = 20;
		
		if (Physics.Raycast(ray,out hit, rayDistance = 20)){
			rayDistance = hit.distance;
		}
		
		nextPossibleShootTime = Time.time + secondsBetweenShots;
		
		AudioSource audio = GetComponent<AudioSource> ();
		audio.Play(); 
		if (tracer){
			StartCoroutine("RenderTracer", ray.direction * rayDistance);
		}
		Debug.DrawRay (ray.origin,ray.direction * rayDistance, Color.red, 1);
	}
}

public void Shoot_Automatic () {
	if (gunType == GunType.Auto) {
		Shoot ();
	}
}

private bool CanShoot() {
	bool canShoot = true;
	
	if (Time.time < nextPossibleShootTime) {
		canShoot = false;
	}
	
	return canShoot;
}

IEnumerator RenderTracer(Vector3 hitPoint){
	tracer.enabled = true;
	tracer.SetPosition(0,rayExit.localPosition);
	tracer.SetPosition(1,rayExit.localPosition + hitPoint);
	yield return null;
	tracer.enabled = false;
}

}

The linerenderer component which is attatched to the same gameobject as this script does not fully follow the ray the way its supposed to. So can someone please help? I have a picture of it:

[Album] bug

(The yellow line is the linerenderer and the red line is the debug.drawray)
for extra information, the LineRenderer deforms when I fire in different directions, it changes its length each time.

Please help, thank you.

P.S. Im using Unity 5

2

Instead of:

tracer.SetPosition(1,rayExit.localPosition + hitPoint);

Try:

tracer.SetPosition(1,rayExit.position + ray.direction * hit.distance);