using System.Collections.Generic;
using UnityEngine;

namespace FIMSpace.FLook
{
    public class FLookAnimator_Demo_NPCPriority1 : MonoBehaviour
    {
        public string ImportantTargetTag = "Player";
        public string NPCTag;

        private FLookAnimator npcLookAnimator;
        private Transform importantTarget;
        private Transform targetInRange;

        // When component is added inside editor, it reads object's tag to be putted in NPCTag variable
        private void Reset()
        {
            NPCTag = gameObject.tag;
        }

        private void Start()
        {
            npcLookAnimator = GetComponent<FLookAnimator>();
        }

        // When someone steps in range
        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == ImportantTargetTag)
            {
                importantTarget = other.transform;
                UpdateLookTarget();
            }
            else
                if (other.tag == NPCTag)
            {
                targetInRange = other.transform;
                UpdateLookTarget();
            }
        }


        // When someone left look at range
        private void OnTriggerExit(Collider other)
        {
            if (other.tag == ImportantTargetTag)
            {
                importantTarget = null;
                UpdateLookTarget();
            }
            else
                if (other.tag == NPCTag)
                {
                    targetInRange = null;
                    UpdateLookTarget();
                }
        }


        private void UpdateLookTarget()
        {
            // If important target is set, we looking at it (player)
            if (importantTarget)
                npcLookAnimator.ObjectToFollow = importantTarget;
            else
                if (targetInRange)
                    npcLookAnimator.ObjectToFollow = targetInRange;
        }
    }
}