BulletController.cs

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

public class BulletController : MonoBehaviour
{
    public PlayerController player;

    public float bulletSpeed;

    public GameObject enemyDeathPartical;

    public GameObject bulletImpactPartical;

    public int pointsForKillingEnemy;

    public float rotationSpeed;

    public int bulletDamage;

    //private Rigidbody2D myRigidBody2D;//




    // Start is called before the first frame update
    void Start()
    {
        player = FindAnyObjectByType<PlayerController>();
        if (player.transform.localScale.x < 0)
        {
            bulletSpeed = -bulletSpeed;
            rotationSpeed = -rotationSpeed;


        }
    }

    // Update is called once per frame
    void Update()
    {
        GetComponent<Rigidbody2D>().velocity = new Vector2(bulletSpeed, GetComponent<Rigidbody2D>().velocity.y);

        GetComponent<Rigidbody2D>().angularVelocity = rotationSpeed; // Make the bullet rotate if needed




    }

    void OnTriggerEnter2D(Collider2D other)
    {

        if (other.tag == "Enemy")
        {
            //Instantiate(enemyDeathPartical, other.transform.position, other.transform.rotation);
            //Destroy(other.gameObject);
           // ScoreManager.AddPoints(pointsForKillingEnemy);
           other.GetComponent<EnemyHealthManager>().giveDamage(1);

        }

        if (other.tag == "Boss")
        {
            //Instantiate(enemyDeathPartical, other.transform.position, other.transform.rotation);
            //Destroy(other.gameObject);
           // ScoreManager.AddPoints(pointsForKillingEnemy);
            other.GetComponent<BossHealthManager>().giveDamage(1);
        }



        Instantiate(bulletImpactPartical, transform.position, transform.rotation);
        Destroy (gameObject);
    }
}