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

public class ShotBeam : MonoBehaviour
{
    public GameObject laserGun;
    public GameObject beamPrefab;
    public AudioClip shotSound;
    public float shotSpeed;

    void Update()
    {
        // マウス左クリックで発射
        if(Input.GetMouseButtonDown(0))
        {
            GameObject beam = Instantiate(beamPrefab, transform.position, laserGun.transform.rotation);
            Rigidbody beamRb = beam.GetComponent<Rigidbody>();
            beamRb.AddForce(transform.forward * shotSpeed);

            AudioSource.PlayClipAtPoint(shotSound, Camera.main.transform.position);
        }
    }
}
C#