gistfile1.txt

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class gunController : MonoBehaviour {

	public float fireRate;

	public GameObject endofLine;
	public LineRenderer laserLineTrace;


	// Use this for initialization
	void Start () {
		Cursor.visible = false;
	}
	
	// Update is called once per frame
	void Update () {
		
		//This draws the LineRenderer to start from the gun's position to end at the crosshair
		Vector3 playerPositionv3 = this.gameObject.transform.position;
		laserLineTrace.SetPosition (0, playerPositionv3);
		laserLineTrace.SetPosition (1, endofLine.transform.position);

		//This locates the mouse cursor position and puts the crosshair at that point
		Vector3 crosshairLocation = Camera.main.ScreenToWorldPoint(Input.mousePosition);
		crosshairLocation.z = 0;
		endofLine.transform.position = crosshairLocation;

	}

	void FixedUpdate(){



		//This gets the mouse cursor position relative to the screen
		Vector3 dir = Input.mousePosition - Camera.main.WorldToScreenPoint (transform.position);
		aimGun (dir);


		Vector3 mouseCursorLocation = dir;
		Vector2 playerLocation = GameObject.Find ("Player").transform.position;


		RaycastHit2D hit = Physics2D.Raycast (playerLocation, mouseCursorLocation);
		Debug.DrawRay (playerLocation, mouseCursorLocation);
	
	}

	void aimGun(Vector3 dir){
		
		//This aims the gun
		float angle = Mathf.Atan2 (dir.y, dir.x) * Mathf.Rad2Deg;
		this.gameObject.transform.rotation = Quaternion.AngleAxis (angle, Vector3.forward);

		if (this.gameObject.transform.rotation.z > 90) {
			Vector3 gunRot = this.gameObject.transform.localScale;
			gunRot.x *= -1;
			this.gameObject.transform.localScale = gunRot;

		}
	}
}