using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
namespace BITKit.Sensors
{
    public class TriggerSensor : MonoBehaviour
    {
        [Header(Constant.Header.Events)]
        public UnityEvent<Collider> onDetected = new();
        public UnityEvent<Collider> onLost = new();
        [Header(Constant.Header.InternalVariables)]
        List<Collider> _detected = new();
        void OnTriggerEnter(Collider collider)
        {
            if (IsValid(collider))
            {
                _detected.Add(collider);
                onDetected.Invoke(collider);
            }
        }
        void OnTriggerExit(Collider collider)
        {
            if (_detected.TryRemove(collider))
            {
                onLost.Invoke(collider);
            };
        }
        void OnCollisionEnter(Collision collision)
        {
            var collider = collision.collider;
            if (IsValid(collider))
            {
                _detected.Add(collider);
                onDetected.Invoke(collider);
            }
        }
        void OnCollisionStay(Collision collision)
        {
            var collider = collision.collider;
            if (_detected.TryRemove(collider))
            {
                onLost.Invoke(collider);
            };
        }
        bool IsValid(Component self)=>true;
    }
}