Unity ゲームオブジェクトの往復移動

RoundTrip.cs

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

/// <summary>
/// Lerpでゲームオブジェクトを移動させる
///
/// [参考URL]
/// UnityでLerpを使って収縮運動や往復運動をさせる
/// https://getabakoclub.com/2020/01/30/lerp%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E5%8F%8E%E7%B8%AE%E9%81%8B%E5%8B%95%E3%82%84%E5%BE%80%E5%BE%A9%E9%81%8B%E5%8B%95%E3%82%92%E3%81%95%E3%81%9B%E3%82%8B/
/// </summary>
public class RoundTrip : MonoBehaviour
{
    private Vector3 originPos;                  //最初の位置
    [SerializeField] private Vector3 offsetPos; //移動量

    //RoundTrip
    private float MoveTimer = 0f;                       //往復判断用
    [SerializeField] private float RoundTripSpan = 2f;  //往復期間[秒]


    private void Start() {
        this.originPos = this.transform.localPosition;
    }

    void Update()
    {
        this.MoveTimer += Time.deltaTime;

        if (this.MoveTimer < this.RoundTripSpan * 0.5f) {
            this.transform.localPosition = Vector3.Lerp(this.transform.localPosition, this.originPos + this.offsetPos, 0.1f);
        }

        if ((this.MoveTimer >= this.RoundTripSpan * 0.5) &&
            (this.MoveTimer < this.RoundTripSpan)) {
            this.transform.localPosition = Vector3.Lerp(this.transform.localPosition, this.originPos, 0.1f);
        }

        if (this.MoveTimer >= this.RoundTripSpan) {
            this.MoveTimer = 0f;
        }
    }
}