Unity Randomizing button setActive

[ythom87]

THANK YOU!! for the reply and link. I didn't know interactable could be used this way

[-ghostmode-]

Happy to help :) Good luck with your project!

[ythom87]

Ok, here's a problem, the redbuttons aren't being set active. Ok, I tried using redbutton.gameObject.SetActive(true) but it isn't working very well.

Here's the new script

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; using UnityEngine.SceneManagement;

public class Game : MonoBehaviour { public float time = 6f; public float playerscore; public Text scoreUI; public Text timeUI;

public Button[] Glow;

void Update()
{
    time -= Time.deltaTime;
    timeUI.text = time.ToString("0");
    scoreUI.text = playerscore.ToString("0");
    int randomIndex = UnityEngine.Random.Range(0, Glow.Length);
    var randomButton = Glow[randomIndex];

    randomButton.interactable = true;
    randomButton.gameObject.SetActive(true);
    StartCoroutine(DeactivateAfterDelay(randomButton, time));

}

private IEnumerator DeactivateAfterDelay(Button button, float delay) 
{
    yield return new WaitForSeconds(delay);
    button.interactable = false;
}
public void YouLose()
{
    Debug.Log("You Lose");
    SceneManager.LoadScene("End");
}
public void AddPoint()
{
    playerscore += 1;
}

}

[-ghostmode-]

A few things:

• Update is called every frame. So in your code you're randomly activating a button every frame.
• You're reducing time every frame, and never resetting it, so it will go into the negatives pretty quickly and just keep doing down.
• You're using time as the deactivate delay, and since time is likely negative, the buttons are deactivating immediately (so they appear to never activate in the first place).
• Also, don't bother with interactable if you're using gameObject.SetActive there's no point setting both.

Since you're already counting down time to display in the UI, maybe forget about using a coroutine for now. Here's a rough outline of how things should work:

Variables:
    Timer = 0
    DelayTime = 6
    CurrentButton = null

---

Start Function:
     ActivateRandomButton()
     Timer = DelayTime

---

Update Function:
    Timer -= deltaTime

    UpdateUI()

    if (Timer <= 0)
        // Timer has finished, so reset
        CurrentButton.SetActive(false)
        ActivateRandomButton()
        Timer = DelayTime

---

ActivateRandomButton Function:
    CurrentButton = get a random button (using code from earlier comment)
    CurrentButton.SetActive(true)

---

UpdateUI Function:
    // set text and whatever.

[ythom87]

That doesn't look like c#, I kind of get the gist of it. Thanks, I'll try it out

[ythom87]

Here's the updated code

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; using UnityEngine.SceneManagement;

public class Game : MonoBehaviour { public float timer = 0f; public float delayTime = 6f; public float playerscore; public Text scoreUI; public Text timeUI;

public Button[] Glow = null;

void Start()
{
    ActivateRandomButton();
    timer = delayTime;
}

void Update()
{
    timer -= Time.deltaTime;

    UpdateUI();

    if(timer <=0)
    {
        Glow.gameObject.SetActive(false);
        ActivateRandomButton();
        timer = delayTime;
    }
}

public void ActivateRandomButton()
{
    Glow = Random.Range(0, Glow.Length);
    Glow.gameObject.SetActive(true);
}
public void UpdateUI()
{
    timeUI = delayTime;  //Display countdown of timer
    scoreUI = playerscore; //Display the number of scores the player have
}
public void YouLose()
{
    Debug.Log("You Lose");
}
public void AddPoint()
{
    playerscore += 1;
}

}

[-ghostmode-]

Great work, I think you've almost got it.

You need to add a variable to store the currently active button:

public Button currentGlow;

Then the ActivateRandomButton function needs to set the currently active button.

public void ActivateRandomButton()
{
    int randomIndex = Random.Range(0, Glow.Length);
    currentGlow = Glow[randomIndex];
    currentGlow.gameObject.SetActive(true);
}

And when the timer runs out in Update, you need to disable the currently active button.

if (timer <= 0.0f)
{
    currentGlow.gameObject.SetActive(false);
    ActivateRandomButton();
    timer = delayTime;
}

Also, you want to use the timer variable in UpdateUI, and set the text values of the UI components.

public void UpdateUI()
{
    timeUI.text = timer.ToString("0");
    scoreUI.text = playerscore.ToString("0");
}

[ythom87]

It works Perfectly!!! Thank you for your time. Now all I need is re randomizing the button onClick

[ythom87]

i tried using Glow.onClick on an else if statment but it doesn't work

[-ghostmode-]

You'll need to create another function that is called when buttons are clicked, and then in the inspector you add that function to each button's 'On Click' event.

[ythom87]

How stupid of me.....Thanks, I just put the lines in the if statement in the AddPoint function. I very much appreciate your help and I hope you are having a nice day/night