Мои Заметки. Игровые События и примеры в Unity.

using UnityEngine;
// System.Collections.Generics;
public abstract class CoreEvent : MonoBehaviour {

	public CoreEvent nextEvent; // Следующее событие
	// public List<CoreEvent> listEvents;

	public abstract void Action();
}

using UnityEngine;

public class LookEvent : CoreEvent
{
    public override void Action()
    {
       //if(nextEvent != null) nextEvent.Action();
       //else print("Look");
    }
}

public ovveride void Action()
{
base.Action();
//Какая-то функция
}

public class HandlerEvents: MonoBehaviour
    {

        public List<CoreEvent> events; // Указываем базовый класс.

        public virtual void Launch()
        {
          
            for (byte countEvent = 0; countEvent < events.Count; countEvent++)
            {
                if (events[countEvent] != null) events[countEvent].Action(); // Вызываем только те события, которые указаны в листе (не null).
            }
        }
    }

	public enum TriggerType { Enter, Stay, Exit }

    public class TriggerHandler: HandlerEvents
    {
        public TriggerType triggerType;

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (triggerType == TriggerType.Enter && other.GetComponent<CoreEvent>()) Launch();
        }  

        private void OnTriggerExit2D(Collider2D other)
        {
            if (triggerType == TriggerType.Exit && other.GetComponent<CoreEvent>()) Launch();
        }

        private void OnTriggerStay2D(Collider2D other)
        {
            if (triggerType == TriggerType.Stay && other.GetComponent<CoreEvent>()) Launch();
        }

    }