MRClass/Assets/Resources/Biology/TestItem.cs

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

public class TestItem : MonoBehaviour {

    private Rigidbody mRig;
	void Start () {
        mRig = this.GetComponent<Rigidbody>();

    }
	
	// Update is called once per frame
	void Update () {
		
	}

    private void LateUpdate()
    {
        Move();
    }

    private float cd = 1;
    private float fullTime = 0.5f;
    private float duringTime;
    private void Move()
    {
       if(duringTime > fullTime)
        {
            duringTime = -cd;
        }
        if(duringTime < fullTime && duringTime >=0)
        {
            duringTime += Time.deltaTime;
            this.mRig.AddForce(Vector3.right * 2);
        }
        else
        {
            duringTime += Time.deltaTime;
        }
    }
}