TriggerTagActions

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

using UnityEngine;
using UnityEngine.Events;

namespace GameCore
{
    [RequireComponent (typeof (Collider))]
    public class TriggerTagActions : MonoBehaviour
    {
        private Collider _collider = null;
        public new Collider collider { get { if (_collider == null) _collider = GetComponent<Collider> (); return _collider; } }
        private void Awake () { collider.isTrigger = true; }

        [SerializeField] List<TagAction> OnEnterTrigger;
        [SerializeField] List<TagAction> OnExitTrigger;
        public void AddOnEnterAction (string Tag, UnityEvent action)
        {
            TagAction tagAction = new TagAction ();
            tagAction.Tag = Tag;
            tagAction.Action = action;
            OnEnterTrigger.Add (tagAction);

        }
        public void AddOnExitAction (string Tag, UnityAction action)
        {
            var tagAction = OnExitTrigger.Find (ta => ta.Tag == Tag);
            if (tagAction == null) return;
            tagAction.Action.AddListener (action);
        }

        private void OnTriggerEnter (Collider other)
        {
            foreach (var trigger in OnEnterTrigger)
                trigger.Invoke (other.gameObject);
        }

        private void OnTriggerExit (Collider other)
        {
            foreach (var trigger in OnExitTrigger)
                trigger.Invoke (other.gameObject);
        }
    }

    [System.Serializable]
    public class TagAction
    {
        public string Tag;
        public UnityEvent Action;
        public void Invoke (GameObject go)
        {
            if (go.CompareTag (Tag))
            {
                Action.Invoke ();
            }
        }
    }
}