How to wait a certain amount of seconds in C#

Archived Forums Questions & Answers
1

I have looked everywhere for an answer and but they never seem to work… I have tried using this:
using UnityEngine;
using UnityEngine.UI;

public class textBootUp : MonoBehaviour {

	void Start () {

        Text textLoad = GetComponent<Text>();

        //Start of text change
        textLoad.text = "";
        System.Threading.Thread.Sleep(3000); //Attempt of a wait script
        textLoad.text = "Loading";

    }
}

The problem is when I launch the game in the editor, it takes 3 more seconds to load than normal and then when it has finished loading, it automatically changes the text to ‘Loading’.
Can anyone help?

4 Answers

4
2

To wait seconds in c# i have two ideas:

  • Time.deltatime in a loop (however i
    think this would not work in your
    case, and tend to freeze unity)

  • IEnumerator yield return new waitforseconds(3f);

Example:

IEnumerator waiter_not_that_waiter_just_waiter(){
     yield return new waitforseconds(3f);
     //my code here after 3 seconds
}

To run a Couroutine u have to call this function like this, StartCouroutine(functionname);

 –

Additional note: you would also need some sort of check/switch in your Start(). Like 'bool readyToGO' Set it to false before starting the Coroutine. Then have the IEnumerator set it to true when it finishes. Like 'readyToGo = true' where @Menyus777 has 'my code ......' https://docs.unity3d.com/Manual/Coroutines.html hope this helps

 –

Then sorry, I can't help you. You should edit your question with this info, it's quite vital for your problem. If there is no mechanism for that, you could add your own ID system that your server could set on all clients when instantiating. I'm not sure if this is possible, just an idea

 –
3

What I almost always do is to store the time in variable and then substract Time.deltaTime from it in the Update loop

public float time;
private float timeStore;

void Start(){
	timeStore = time;
}

void Update(){
	if (time > 0) {
		time -= Time.deltaTime;
	} else {
		//Do Stuff	
		time = timeStore;		
	}
}

Fyi, To render the "Loading" text, It must be done outside of Start() as it fires before the first frame is rendered. So waiting in Start() will also delay the appearance of the text.

 –

Appreciate your answer. Thank you.

 –
4

Maybe something like this? Not great but you get the idea

public class textBootUp : MonoBehaviour {
 
     void Start () {
 
        Text textLoad = GetComponent<Text>();
 
        //Start of text change
        textLoad.text = "";
	    letsGo = false;
	    CoRunning = false;
        //System.Threading.Thread.Sleep(3000); //Attempt of a wait script
        //textLoad.text = "Loading";
 
     }
 }

void Update(){
	if(!letsGo){
		TextLoad.text = "Loading";
		if(!CoRunning){
			StartCoroutine(waiter_not_that_waiter_just_waiter);
		}
		return;
	}
	//below here will start after Coroutine

}

 IEnumerator waiter_not_that_waiter_just_waiter(){
	CoRunning = true;
 	//Do some stuff here while we wait
	yield return new waitforseconds(3f);
	//my code here after 3 seconds
	textLoad.text = "";
	letsGo = true;
	CoRunning = false;
 }
5

@Digestivbiscuitsm

Problem:

public class textBootUp : MonoBehaviour {

 void Start () {

     Text textLoad = GetComponent<Text>();

     //Start of text change
     textLoad.text = "";
     System.Threading.Thread.Sleep(3000); //Attempt of a wait script
     textLoad.text = "Loading";

 }

}

Solution 1:
public class textBootUp : MonoBehaviour {

   void Start()
  {
      StartCoroutine(ChangeText(30f));
  }

  IEnumerator ChangeText(int halt)
 {
       Text textLoad = GetComponent<Text>();

        //Start of text change
       textLoad.text = "";
       yield return new WaitForSeconds(halt);
       textLoad.text = "Loading";
 }

}
Solution 2:

public class textBootUp : MonoBehaviour {

 void Start ()
{

      Text textLoad = GetComponent<Text>();

       //Start of text change
       textLoad.text = "";
       Invoke("ChangeText", 30f);
 }

void ChangeText()
{
      textLoad.text = "Loading";
}

}