PetBuff.cs

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

public class PetBuff : MonoBehaviour
{
    public float timeBetweenHeal = 10f;
    public int healQuantity = 20;
    public int atkMultQuantity = 2;
    public PetTypeEnum petType;


    Animator anim;
    GameObject player;
    PlayerHealth playerHealth;
    DefaultShooting playerShooting;
    bool playerInRange;
    float timer;


    void Awake ()
    {
        player = GameObject.FindGameObjectWithTag ("Player");
        playerHealth = player.GetComponent <PlayerHealth> ();
        playerShooting = player.GetComponentInChildren<DefaultShooting>();
        anim = GetComponent <Animator> ();
    }

    void Start ()
    {
        if(petType == PetTypeEnum.Aura)
        {
            Aura();
        }
    }

    void OnTriggerEnter (Collider other)
    {
        // If the entering collider is the player...
        if(other.gameObject == player && other.isTrigger == false)
        {
            // ... the player is in range.
            playerInRange = true;
        }
    }

    void OnTriggerExit (Collider other)
    {
        // If the exiting collider is the player...
        if(other.gameObject == player)
        {
            // ... the player is no longer in range.
            playerInRange = false;
        }
    }


    void Update ()
    {
        timer += Time.deltaTime;

        // If the timer exceeds the time between attacks, the player is in range and this enemy is alive...
        if(timer >= timeBetweenHeal && playerInRange)
        {
            // ... heal.
            if(petType == PetTypeEnum.Healer)
            {
                Heal();
                if (playerHealth.currentHealth > 0)
                {
                    // ... tell the animator to make groot have a healing animation
                    anim.SetTrigger ("HealPlayer");
                }
            }
        }

    }


    void Heal()
    {
        timer = 0f;

        // If the player health is not full...
        if (playerHealth.currentHealth < 100)
        {
            // ... heal the player.
            playerHealth.GetHeal(healQuantity);
        }
        // Debug.Log($"Do healing, now player health: {playerHealth.currentHealth}"); // ! Debug
    }

    void Aura()
    {
        playerShooting.damagePerShot *= atkMultQuantity;
    }
}