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

namespace MoreMountains.Tools
{
    /// <summary>
    /// A test class used to demonstrate the MMObservable in the MMObservableTest demo scene    
    /// </summary>
    public class MMObservableDemoObserver : MonoBehaviour
    {
        /// the subject to look at
        public MMObservableDemoSubject TargetSubject;    

        /// <summary>
        /// When the position changes, we move our object accordingly on the y axis
        /// </summary>
        protected virtual void OnPositionChange()
        {
            this.transform.position = this.transform.position.MMSetY(TargetSubject.PositionX.Value);
        }
        
        /// <summary>
        /// On enable we start listening for changes
        /// </summary>
        protected virtual void OnEnable()
        {
            TargetSubject.PositionX.OnValueChanged += OnPositionChange;
        }

        /// <summary>
        /// On enable we stop listening for changes
        /// </summary>
        protected virtual void OnDisable()
        {
            TargetSubject.PositionX.OnValueChanged -= OnPositionChange;
        }
    }
}