Unity shoot script

void Shoot() {
		//translate screen coordinates to world coordinates to allow for ray cast
		if (facingDirectionScript.isFlipped == false) {
			Vector2 mousePosition = new Vector2 (Camera.main.ScreenToWorldPoint (Input.mousePosition).x, Camera.main.ScreenToWorldPoint (Input.mousePosition).y);
			Vector2 firePointPosition = new Vector2 (firePoint.position.x, firePoint.position.y);
			RaycastHit2D hit = Physics2D.Raycast (firePointPosition, mousePosition - firePointPosition, 100, whatToHit);
			//Debug.DrawLine (firePointPosition, (mousePosition - firePointPosition) * 100, Color.magenta);
			if (hit.collider != null) {
				//Debug.DrawLine (firePointPosition, hit.point, Color.red);
				Enemy enemy = hit.collider.GetComponent<Enemy>();
				if (enemy != null) {
					enemy.DamageEnemy (Damage);
				}
			}
			if (Time.time >= timeToSpawnEffect) {
				Effect ();
				timeToSpawnEffect = Time.time + 1/effectSpawnRate;
			}
		} else if (facingDirectionScript.isFlipped == true) {
			Vector2 mousePosition = new Vector2 ((Camera.main.ScreenToWorldPoint (Input.mousePosition).x), Camera.main.ScreenToWorldPoint (Input.mousePosition).y) ;
			Vector2 firePointPosition = new Vector2 ((firePoint.position.x), firePoint.position.y);
			RaycastHit2D hit = Physics2D.Raycast (firePointPosition, (mousePosition - firePointPosition), 100, whatToHit);
			//Debug.DrawLine (firePointPosition, (mousePosition - firePointPosition) * 100, Color.magenta);

			if (hit.collider != null) {
				//Debug.DrawLine (firePointPosition, hit.point, Color.red);
				Enemy enemy = hit.collider.GetComponent<Enemy>();
				if (enemy != null) {
					enemy.DamageEnemy (Damage);
				}
			}
			if (Time.time >= timeToSpawnEffect) {
				Effect ();
				timeToSpawnEffect = Time.time + 1/effectSpawnRate;
			}
		}
	}
	
	//need to add possible line of code that damages enemies only when rayCast hits the enemy, not just at mouse position