countdown to start level?

Unity Engine
1

Hello,
I need to create a timer that will go at the beginning of the level, that countdowns from 3 so the player knows when to start the game (eg. 3…2…1…GO!). During this time, the player should not be able to move.

using UnityEngine;
using System.Collections;
using System.IO;
using System;
using System.Threading;

public class Timer : MonoBehaviour {

    static bool startGame=false;
   
    void Start () {
   
        startGame = true;
       
        if (startGame == true)
        {
            Thread.Sleep (1000);
            GameObject.Find("Text").guiText= "3";
            Thread.Sleep (1000);
            GameObject.Find("Text").guiText.text= "2";
            Thread.Sleep (1000);
            GameObject.Find("Text").guiText.text= "1";
            Thread.Sleep (1000);
            GameObject.Find("Text").guiText.text= "GO!";
            GameObject.Find ("Text").guiText.text = "";
        }
    }

The error that shows up is :
MissingComponentException: There is no ‘GUIText’ attached to the “Text” game object, but a script is trying to access it.

However, i used UI text instead, because i dont have the option of adding GUI text for some reason(i dont have gameObject>create other )…

2

http://unity3d.com/learn/tutorials/modules/beginner/ui/ui-text

3

Thank you for the video!! I fixed the countdown.

Would you also happen to know how to keep the player from moving while the countdown is happening?

4

Put this at the top of the player Update method:

if(Timer.startGame == false) return;

This will immediately end the Update method right there as long as startgame is false, so none of the player code below it will run until it’s true.

5

To stop the player from moving, I disable the motor script using GetComponent. and then enable it afterwards.

6

do you do this in the timer script or the player movement script?

7

It would be in the timer script: something like
GameObject.FindWithTag(“Player”).GetComponent().enabled = false;
at the start of the timer, and then true at the end of the timer.

8

Does the script actually work? As I read it should block the main thread and freeze Unity for four seconds. All without displaying your countdown.

9

yes i changed the script and added a coroutine instead of using thread.sleep…that was one of the issues

public class Timer1 : MonoBehaviour {
using UnityEngine;
using System.Collections;
using System.IO;
using System;
using System.Threading;
using UnityEngine.UI;

public class Timer : MonoBehaviour {

    static bool startGame=false;
    public Text txt;

   
    // Use this for initialization

    void Awake()
    {
        txt = gameObject.GetComponent<Text>();
        }
    void Start () {
   
        startGame = true;
           
        if (startGame == true)
        {
        StartCoroutine("CountDown");
        }
    }

        IEnumerator CountDown()
{

        yield return new WaitForSeconds(1);
        txt.text= "3";
        yield return new WaitForSeconds(1);   
        txt.text= "2";
        yield return new WaitForSeconds(1);
        txt.text=  "1";
        yield return new WaitForSeconds(1);
        txt.text= "GO!";
        yield return new WaitForSeconds(1);
        txt.text= "";
//
    }
//    }
10

this stopped the timer from playing but not the character

11

It doesn’t have anything to do with the countdown, so it must have thrown an error or something.