Zombie_AI

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

public class Zombie_AI : MonoBehaviour {

    private float lastTime;
    [SerializeField] private float Distance;
    public Transform Target;
    [SerializeField] private float lookAtDistance = 30f;
    [SerializeField] private float chaseRange = 20f;
    [SerializeField] private float attackRange = 2f;
    private float moveSpeed;
    [SerializeField] private float Damping = 6f;
    [SerializeField] private float TheDamage = 25f;
    public CharacterController controller;
    float gravity = 20f;
    Vector3 moveDirection = Vector3.zero;
    void  Start()
    {
        FindHealth();
        lastTime = Time.time;
    }
    void Update()
    {
        Distance = Vector3.Distance(Target.position, transform.position);

        if (Distance < lookAtDistance)
        {
            LookAt();
        }

        if (Distance < attackRange)
        {
            Attack();
           if(gameObject.GetComponent<Animator>().GetBool("isAttacking")==false || //// ces deux lignes servent juste à pas repeter si c'est déjà fait
           gameObject.GetComponent<Animator>().GetBool("isChasing")==true)
              {
                gameObject.GetComponent<Animator>().SetBool("isAttacking", true);
                gameObject.GetComponent<Animator>().SetBool("isChasing", false);
             }
        }

        if (Distance < chaseRange && Distance > attackRange)
        {
            Chase();
             if (gameObject.GetComponent<Animator>().GetBool("isAttacking") == true || /// Pareil ici
             gameObject.GetComponent<Animator>().GetBool("isChasing") == false)
               {
                gameObject.GetComponent<Animator>().SetBool("isAttacking", false);
                gameObject.GetComponent<Animator>().SetBool("isChasing", true);
               }
        }
    }
    void LookAt()
        {
            var lookPos = Target.position - transform.position;
            lookPos.y = 0;
            var rotation = Quaternion.LookRotation(lookPos);
            transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * Damping);
        }
    void Chase()
    {
        gameObject.GetComponent<Rigidbody>().velocity = transform.forward * moveSpeed;
        //moveDirection = transform.forward;
        //moveDirection *= moveSpeed;
        ////moveDirection.y -= gravity * Time.deltaTime;
        ////gameObject.GetComponent<Rigidbody>().AddForce(moveDirection * Time.deltaTime * moveSpeed);
        //gameObject.GetComponent<Rigidbody>().AddForce(transform.forward * Time.deltaTime * moveSpeed);
    }
    void Attack()
    {
        if (Time.time >= lastTime + 1f)
        {
        Target.SendMessage("ApplyDammage", TheDamage);
        Debug.Log("The Ennemy has attacked");
            lastTime = Time.time;
    }
    void FindHealth()
    {
        Target = GameObject.Find("PlayerStats").GetComponent<Transform>();
    }
}