Weapon.cs

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

public class Weapon : MonoBehaviour
{

	public Transform firePoint;
	public int damage = 40;
	public GameObject impactEffect;
	public LineRenderer lineRenderer;
	public float fireRate = 1100;

	// Update is called once per frame
	void Update()
	{
		if (Input.GetButtonDown("Fire1"))
		{
			StartCoroutine(Shoot());
		}
	}

	IEnumerator Shoot()
	{
		RaycastHit2D hitInfo = Physics2D.Raycast(firePoint.position, firePoint.right);

		if (hitInfo)
		{
			Enemy enemy = hitInfo.transform.GetComponent<Enemy>();
			if (enemy != null)
			{
				enemy.TakeDamage(damage);
			}

			Instantiate(impactEffect, hitInfo.point, Quaternion.identity);

			lineRenderer.SetPosition(0, firePoint.position);
			lineRenderer.SetPosition(1, hitInfo.point);
		}
		else
		{
			lineRenderer.SetPosition(0, firePoint.position);
			lineRenderer.SetPosition(1, firePoint.position + firePoint.right * 100);
		}

		lineRenderer.enabled = true;

		yield return 0;

		lineRenderer.enabled = false;
	}
}