PlayerShooting

using UnityEngine;
using System.Collections;

public class PlayerShooting : MonoBehaviour {
	public float fireRate;
	public float cooldown;//wait amout of time before we can shoot again
	
	//check to see if we're actually firing
	public bool isFiring = false;
	
	//firing points transform for launching projectiles
	public Transform leftFirePoint;
	public Transform rightFirePoint;
	
	//our projectile object
	public GameObject laserPrefab;
	
	public AudioSource fireFXSound;
	
	void Start () {
		isFiring = false;//we do this just to be on the safe side, so it doesn't shoot when we run the game
	}//start ends
	
	void Update () {
		CheckInput ();//is calling void CheckInput () {...}
		cooldown -= Time.deltaTime;
		
		if(isFiring == true) {
			//the player has initiated shooting the laser right now
			Fire();
		}
	}//update ends
	
	void CheckInput () {
		if(Input.GetMouseButton(0)) {
			isFiring = true;
		} else {
			isFiring = false;
		}
	}
	
	void Fire() {
		if(cooldown > 0) {
			return;//do not fire a thing!
		}
		//play sound FX when player is firing
		if(fireFXSound != null) {
			fireFXSound.Play();
		}
		GameObject.Instantiate (laserPrefab, leftFirePoint.position, leftFirePoint.rotation);
		GameObject.Instantiate (laserPrefab, rightFirePoint.position, rightFirePoint.rotation);
		
		cooldown = fireRate;
	}
	
}