C# script to shoot projectile from GameObject in 2D.


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

// ? 2017 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net

public class Shoot : MonoBehaviour {
    public Rigidbody2D projectile;

    public Transform projectileSpawnPoint;

    public float projectileVelocity;

    public float timeBetweenShots;
    private float timeBetweenShotsCounter;

    private bool canShoot;

    // Use this for initialization
    void Start () {
        canShoot = false;

        timeBetweenShotsCounter = timeBetweenShots;

    // Update is called once per frame
    void Update () {

        if (Input.GetMouseButtonDown(0) && canShoot)
            Rigidbody2D bulletInstance = Instantiate(projectile, projectileSpawnPoint.position, Quaternion.Euler(new Vector3(0, 0, transform.localEulerAngles.z))) as Rigidbody2D;

            bulletInstance.GetComponent<Rigidbody2D>().AddForce(projectileSpawnPoint.right * projectileVelocity);

            canShoot = false;

        if (!canShoot)
            timeBetweenShotsCounter -= Time.deltaTime;

            if(timeBetweenShotsCounter <= 0)
                canShoot = true;
                timeBetweenShotsCounter = timeBetweenShots;


Unity 2D C# Shoot Projectile On Click
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