using UnityEngine;using System.Collections;public class CarGUI : MonoBehaviour{    private const float FPS_UPDATE_INTERVAL = 0.5f;    private float fpsAccum = 0;    private int fpsFrames = 0;    private float fpsTimeLeft = FPS_UPDATE_INTERVAL;    private float fps = 0;    void Update()    {        fpsTimeLeft -= Time.deltaTime;        fpsAccum += Time.timeScale / Time.deltaTime;        fpsFrames++;        if (fpsTimeLeft <= 0)        {            fps = fpsAccum / fpsFrames;            fpsTimeLeft = FPS_UPDATE_INTERVAL;            fpsAccum = 0;            fpsFrames = 0;        }    }    void OnGUI()    {        GUILayout.BeginArea(new Rect(5, 5, 500, 500));        GUILayout.Label("Arrows: movement\nCtrl: flip car");        GUILayout.Label("FPS: " + fps.ToString("f1"));        GUILayout.EndArea();    }}