Stopping a timer on trigger

I have a timer which counts up when the game starts. I need to stop the timer when the car goes over the finished point.

The timer code is attached to a Text object.

Code (CSharp):

1. public bool isRacing;
2.     Text txt;
3.    
4.     void Awake()
5.     {
6.         txt = GetComponent<Text>();
7.     }
8.    
9.     void Start()
10.     {
11.         isRacing = true;
12.     }
13.    
14.     void Update ()
15.     {
16.         if(isRacing)
17.             txt.text = Time.time.ToString("#.00");
18.     }

How would I go about getting the timer to stop when the timer hits a trigger/finished line.

 

You need to attach to your trigger finish line a script like that: (and obviously assign your car in the inspector)

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using UnityEngine.UI;
4.  
5. public class YourScriptName : MonoBehaviour {
6. public GameObject Car;
7.  
8.     void OnTriggerEnter(Collider coll)
9.     {
10. Car.GetComponent<YourCarScriptName>().isRacing = false;
11.       }