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

namespace YKMoon
{
    /// <summary>
    /// Updatable for NormalUpdater.
    /// </summary>
    public interface IUpdatable
    {
        void Update(float deltaTime, float unscaledDeltaTime);
    }
    public class NormalUpdater : IUpdater
    {
        private event System.Action<float, float> updateEvent;
        /// <summary>
        /// Register update event to this updater.
        /// </summary>
        /// <param name="updateEvent">(float deltaTime, float unscaledDeltaTime)</param>
        public void Reg(System.Action<float, float> updateEvent)
        {
            this.updateEvent += updateEvent;
        }
        /// <summary>
        /// Unregister update event to this updater.
        /// </summary>
        /// <param name="updateEvent">(float deltaTime, float unscaledDeltaTime)</param>
        public void UnReg(System.Action<float, float> updateEvent)
        {
            this.updateEvent -= updateEvent;
        }
        /// <summary>
        /// Register IUpdatable to this updater.
        /// </summary>
        public void Reg(IUpdatable updatable)
        {
            this.updateEvent += updatable.Update;
        }
        /// <summary>
        /// Unregister IUpdatable to this updater.
        /// </summary>
        public void UnReg(IUpdatable updatable)
        {
            this.updateEvent -= updatable.Update;
        }
        public void Update(float deltaTime, float unscaledDeltaTime)
        {
            updateEvent?.Invoke(deltaTime, unscaledDeltaTime);
        }
        public void Clear()
        {
            updateEvent = null;
        }
    }
}