Problem with a script to make a countdown

I try to make a script to make a countdown but it fail. i think that the problem is that contador variable is float and i need a integer...But if i define contador like integer then i have a problem with time.deltatime.Could you somebody help me?
Regards.



using UnityEngine;
using System.Collections;

public class cuenta_atras : MonoBehaviour {


public float contador=3f;



// Use this for initialization
void Start () {

}
// Update is called once per frame}
void Update ()
{


while (contador > 0)
contador -= Time.deltaTime;
Debug.Log ("contador"+ contador);

}

}

 

First of all, you should always post the errors, because it makes things easier for the other people. Put your code in code tags, you find them under Insert/Code on the comment toolbar. I think your error is like: "Cannot convert float to string", if it is, then the solution is to put a .ToString() after contador so it would look like this : Debug.Log("contador" + contador.ToString());

 

Sorry, is my first thread... the real problema is that if i use this script then unity stay block...and i don´t know which the problem is. I think that it can be for the issue of the variables but i don´t know...
Thanks a lot.

 

You probably want to use if(contador > 0) instead of while.

Try something like this:

Code (csharp):

1.  
2. if(contador > 0){
3.     contador -= Time.DeltaTime;
4.     contador = Mathf.RoundToInt(contador);
5. }
6.  

 

Thanks. Do you recomend me to use coroutines then or other method?

 

Thanks
I test with void lateupdate but it doesn´t work. Could you tell me which is the method?
I have this code, and with it i get a countdown but i like to stop it with a value of "contador".
I was looking in the help of unity but i didn´t find a method to make something between frames.
Regards

using UnityEngine;
using System.Collections;

public class aver : MonoBehaviour {
public float contador=3f;

// Use this for initialization
void Start () {
}

// Update is called once per frame}
void Update ()
{
contador -= Time.deltaTime;
}

}
Regards.

 

Thanks for you reply, the problem is that i hace to put your code inside a method and i don´t found anyone that it happens between frames.
Regards.

 

Technically Update happens 'between frames'. Update gets called once per frame, after the physics update, but before the frame is rendered.

 

I used this in one of my games & it worked fine inside the update function:

Code (CSharp):

1. // calculate game time, end game at 3 minutes
2.                 gameTime -= Time.deltaTime;
3.                 if (gameTime <= 0)
4.                         Application.LoadLevel (2);

To display it as whole numbers onscreen instead of the float with a whole string of decimals needs you to format it. The attached is what I did but it won't work for you if you copy/paste it as it is referencing an instance of my manager script but you can see what I was doing with the formatting.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using UnityEngine.UI;
4. public class GameTime : MonoBehaviour {
5.     Text mytext;
6.     int minutes;
7.     int seconds;
8.  
9.     // Use this for initialization
10.     void Start () {
11.         mytext = GetComponent<Text> ();
12.         int minutes = Mathf.FloorToInt(Manager.instance.gameTime / 60F);
13.         int seconds = Mathf.FloorToInt(Manager.instance.gameTime - minutes * 60);
14.  
15.     }
16.    
17.     // Update is called once per frame
18.     void Update () {
19.         if (Manager.instance.gameTime > 0) {
20.                         int minutes = Mathf.FloorToInt (Manager.instance.gameTime / 60F);
21.                         int seconds = Mathf.FloorToInt (Manager.instance.gameTime - minutes * 60);
22.  
23.                         string niceTime = string.Format ("{0:0}:{1:00}", minutes, seconds);
24.                         mytext.text = ("Time Left:  " + niceTime);
25.                 }
26.     }
27. }

 

Thanks for you answers!!!
I write the code with your suggestions and i get it, but i like to stop the execution when the variable contador=0. Could you tell me how can do it?
Regards.

 

You could move the countdown bit into the else statement just above the debug line. That way it only counts down when the timer is above 0

 

Ok, i test it...we got it. Thanks!!!!

 

I am looking for show in the screen the countdown but i have a problem with the guitext...
Do you know if is an issue with the new version of Unity?

 

You need to add using unityengine.ui

Have you checked the tutorials on how to do this stuff?
https://unity3d.com/learn/tutorials

 

Don't complicate simple things guys:

Code (CSharp):

1.     void OnEnable()
2.     {
3.         StartCoroutine(CountDown());
4.     }
5.  
6.     IEnumerator CountDown()
7.     {
8.         float TimeTick = 1.0f;          
9.         int CountDowmFrom = 3;      
10.      
11.         for (int i = 0; i < CountDownFrom; i++)
12.         {
13.             Debug.Log("Count down from " + (CountDownFrom-i).ToString());
14.             yield return new WaitForSeconds(TimeTick);
15.         }
16.         Debug.Log("Go");  
17.     }
18.  

 

First of all thanks for your help.
I write "using unityengine" but without "..ui". i test it.
I am learning c# with unity and i am doing a course at the same time that i watch the tutorials of unity...but i like to practise and for that i have this kind of problems..
Regards

 

Thanks Ironman but i am a novice and i prefer don´t use coroutines still.
Regards.