Enemy script from SlimeShooter

EnemySlimes.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
using UnityStandardAssets.Characters.FirstPerson;

public class EnemySlimes : MonoBehaviour {

    public GameObject Player;
    public GameObject CookiePoint;
    public MeshRenderer[] MeshRends;
    private GameObject slimeUIPanel;
    SlimeBar slimeScript;

    private float PlayerToSlimeDist;
    private float PlayerToCookieDist;
    private float damping = 5;

    public bool onPlayer = false;
    public bool PlayerNearCookieWithSlime = false;
    private bool once = true;
    private float counter;
    private bool slimeHasBeenOnCookie;
    private bool noAttackPlayer;

    /// <summary>
    /// ----------------------------------------------------------------------------FUNCTIONS 
    /// </summary>
    public void Start()
    {
        Player = GameObject.FindGameObjectWithTag("Player");
        CookiePoint = GameObject.FindGameObjectWithTag("Cookie");
        MeshRends = GetComponentsInChildren<MeshRenderer>();
        slimeUIPanel = GameObject.FindGameObjectWithTag("SlimePanel");
        slimeScript = slimeUIPanel.GetComponent<SlimeBar>();
    }

    public void FixedUpdate()
    {
        PlayerToSlimeDist = Vector3.Distance(Player.transform.position, transform.position);
        PlayerToCookieDist = Vector3.Distance(Player.transform.position, CookiePoint.transform.position);
        if (onPlayer == false)
        {          
            if (PlayerToSlimeDist < 2 && PlayerNearCookieWithSlime == false && noAttackPlayer == false)
            {
                AttackPlayer();
                once = true;
            }
            else if (PlayerToSlimeDist < 20 && PlayerNearCookieWithSlime == false){
                LookAndChasePlayer(); }
        } else  { // onPlayer is true
            if (PlayerToCookieDist < 7)
            {
                PlayerNearCookieWithSlime = true;
                onPlayer = false;
            }
        }

        if (PlayerToCookieDist < 7)
        {
            noAttackPlayer = true;
        } else
        {
            noAttackPlayer = false;
        }

        if (PlayerNearCookieWithSlime == true) 
        {
            if (once)
            {
                counter = 5.0f;
                setNearCookie();
                once = false;
            }
            setCookieTimer();
        }
    }

    void LookAndChasePlayer()
    { // Will run as long as the player is nearby the slime
        Quaternion rotation = Quaternion.LookRotation(Player.transform.position - transform.position);
        transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * damping);
        GetComponent<NavMeshAgent>().SetDestination(Player.transform.position);
    }


    void AttackPlayer()
    {     
        // Runs 1 time per slime. If the slime is too close to the player, then it should stick to the player - collision however is off.
        Physics.IgnoreCollision(gameObject.GetComponent<Collider>(), Player.GetComponent<Collider>(), true);
        foreach (MeshRenderer mesh in MeshRends)
        {
            mesh.enabled = false;
        }
        slimeScript.slimeCounter += 1;
        onPlayer = true;
    }

    void setCookieTimer()
    {
        counter -= Time.deltaTime;
        if (counter <= 0.0f)
        {
            PlayerNearCookieWithSlime = false;
        }
    }

    void setNearCookie()
    {
        // First, set the meshrenderes en collision to enabled
        Physics.IgnoreCollision(gameObject.GetComponent<Collider>(), Player.GetComponent<Collider>(), false);
        foreach (MeshRenderer mesh in MeshRends)
        {
            mesh.enabled = true;
        }
        // Then set the destination to the cookie.
        gameObject.transform.position = Random.insideUnitSphere * 2 + CookiePoint.transform.position;
        GetComponent<NavMeshAgent>().SetDestination(CookiePoint.transform.position);
        slimeScript.slimeCounter -= 1;
        onPlayer = false;
    }
}