Simple Curve Scale script

using UnityEngine;
using System.Collections;

public class CurveScale : MonoBehaviour {

	public AnimationCurve scaleCurve;
	public Vector3 movement;
	public float scaleRate;
	public float curvePos;
	public bool loop=true;
	Vector3 localstart;

	void Start () {
		localstart=transform.localScale;
	}


	void Update () {
		if (curvePos!=1||!loop){
			curvePos+=scaleRate*Time.deltaTime;
			if (curvePos>1f){curvePos=curvePos-1f;}
			transform.localScale=localstart+movement*scaleCurve.Evaluate(curvePos);
		}
	}
}