How can I add time to a timer on an object collision?

Questions & Answers
1

In my game I have a timer that will countdown from 10, but if the player hits these orbs then I want to have an additional 5 seconds be added to the timer.

Here is my timer code.

using UnityEngine;
using System.Collections;

public class Timer : MonoBehaviour {

public float time = 11;

 IEnumerator Do() {
	yield return new WaitForSeconds(3);
	Application.LoadLevel(Application.loadedLevel);
}

// Use this for initialization
void Start () {

}


void Update () {

	time -= Time.deltaTime;
}

void OnGUI(){
	if (time > 1) {
		GUI.Label (new Rect (100, 100, 200, 100), "" + (int)time);
	} 

	else {
		GUI.Label (new Rect (100, 100, 200, 100), "Game Over");
		StartCoroutine(Do());
	}
}

}

Here is my collsion.

using UnityEngine;
using System.Collections;

public class Des : MonoBehaviour {

void OnTriggerEnter(Collider other) {
	Destroy(other.gameObject);

}

}

Also I was looking for a way to make the timer not be able to go past 20 seconds. For that i was thinking about something like

if(time >= 20){
time = 20;
}

2

so add extra time in OnTriggerEnter function ! where is the problem ?

void OnTriggerEnter(Collider other)
{
   time+=5; if(time >= 20){ time = 20; } Destroy(other.gameObject,0.1);
}

and your if is a good idea