sked/Assets/Script/Character/DistanceHide.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Serialization;

public class DistanceHide : MonoBehaviour
{
    Vector3 posStart = Vector2.zero;
    public void OnInitialized(float distance)
    {
        this.distance = distance;

        posStart = transform.position;
    }
    public float distance = 5f;
    [System.Serializable]
    public class GoalEvent : UnityEvent { }
    [FormerlySerializedAs("onGoal")]
    [SerializeField]
    private GoalEvent OnGoal = new GoalEvent();
    Vector3 tmp = Vector3.zero;
    private void FixedUpdate()
    {
        tmp = transform.position;
        tmp.y = posStart.y;
        if (distance <= Mathf.Abs(Vector3.Distance(posStart, tmp)))
        {
            OnGoal.Invoke();
            enabled = false;
        }
    }
}