EnemyScript.cs

using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using static UnityEngine.GraphicsBuffer;

public class EnemyScript : MonoBehaviour
{
    private UnityEngine.Object firedBullet;
    private GameObject player1;
    public float moveSpeed = 2;
    public float rotationSpeed = 0.9f;
    public float fireCooldown = 0.5f;
    private float fireCooldownTimer = 0;
    private float deadZoneX = 9.4f;
    private float deadZoneY = 9.4f;
    private FiredBulletScript firedBulletScript;

    // Start is called before the first frame update
    void Start()
    {
        firedBullet = Resources.Load("FiredBullet");
        player1 = GameObject.FindGameObjectWithTag("Player1");
        fireCooldownTimer = fireCooldown;
    }

    // Update is called once per frame
    void Update()
    {
        rotateTowardsPlayer();
        moveForward();
        checkCooldowns();
        checkInScene();
    }

    void rotateTowardsPlayer()
    {
        Vector3 from = transform.up;
        Vector3 to = player1.transform.position - transform.position;
        float angle = Vector3.SignedAngle(from, to, transform.forward) * rotationSpeed * Time.deltaTime;
        transform.Rotate(0, 0, angle);
        Debug.DrawRay(transform.position, transform.up * 10, Color.green, 10);
    }

    void moveForward()
    {
        transform.position += transform.up * moveSpeed * Time.deltaTime;
    }

    void checkCooldowns()
    {
        if (fireCooldownTimer < fireCooldown)
        {
            fireCooldownTimer += Time.deltaTime;
        }
    }

    void checkInScene()
    {
        if (transform.position.x > deadZoneX)
        {
            transform.position += Vector3.left * moveSpeed * Time.deltaTime;
        }
        if (transform.position.x < -1 * deadZoneX)
        {
            transform.position += Vector3.right * moveSpeed * Time.deltaTime;
        }
        if (transform.position.y > deadZoneY)
        {
            transform.position += Vector3.down * moveSpeed * Time.deltaTime;
        }
        if (transform.position.y < -1 * deadZoneY)
        {
            transform.position += Vector3.up * moveSpeed * Time.deltaTime;
        }
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.collider.tag == "FiredBullet")
        {
            Destroy(gameObject);
        }
    }

    private void OnTriggerStay2D(Collider2D trigger)
    {
        if (trigger.tag == "Player1" && fireCooldownTimer >= fireCooldown)
        {
            float radiusOffset = 0.5f;
            float angle = transform.rotation.eulerAngles.z;
            float x = radiusOffset * Mathf.Sin((Mathf.PI / 180) * (angle + 180));
            float y = radiusOffset * Mathf.Cos((Mathf.PI / 180) * angle);
            UnityEngine.Object bulletInstance = Instantiate(firedBullet, new Vector3(transform.position.x + x, transform.position.y + y, transform.position.z), transform.rotation);
            firedBulletScript = bulletInstance.GetComponent<FiredBulletScript>();
            firedBulletScript.playerMoveSpeed = moveSpeed;
            fireCooldownTimer = 0;
        }
    }
}