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How can I toggle countdown timer during the target is detected?

July 15, 2019 - 3:58am #1

I am a beginner of Unity and C# and now implementing the 10 second countdown AR timer using Unity and Vuforia.

What I want to implement is:

- Start the timer when the target has detected

- Reset the timer when the target has removed


However in my code the timer starts before detection and does not reset.



I suppose I should change some code of OnTrackingFound() and OnTrackingLost() in DefaultTrackableEventHandler.cs, but I have no idea how to change it.

I'm glad if you can help me.


Following is my code:

using System.Collections;

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

public class TimeScript : MonoBehaviour
    public GameObject time_object = null;
    private int time_num = 10;
    float TimeCount = 1;
    // Start is called before the first frame update
    void Start()


    // Update is called once per frame
    void Update()
        Text time_text = time_object.GetComponent();
        time_text.text = "00:" + string.Format("{0:00}", time_num);
        TimeCount -= Time.deltaTime;

        if (TimeCount <= 0)
            time_num -= 1;
            TimeCount = 1;
            if (time_num == -1)
                enabled = false;


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