Player Check

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

public class PlayerCheck : MonoBehaviour
{
    /// <summary>
    /// MAKE SURE THE COLLIDER ATTACHED TO THIS SCRIPT IS A TRIGGER AND 2D
    /// ALSO MAKE SURE THE PLAYER IS TAGGED AS PLAYER
    /// ALSO MAKE SURE THE FILE NAME IN THE PROJECT IS THE SAME AS THE CLASS NAME P.S. That's "PlayerCheck"
    /// </summary>

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.gameObject.tag == "Player")
        {                                   //     V     Change this name to whatever you called the project file for the melee enemy AI
            collision.gameObject.GetComponent<MeleeEnemyAI>().playerInRange = true;
        }
    }

    private void OnTriggerExit2D(Collider2D collision)
    {
        if(collision.gameObject.tag == "Player")
        {                                   //      V      Same here
            collision.gameObject.GetComponent<MeleeEnemyAI>().playerInRange = false;
        }
    }
}