Scene Transition Stuck On Load

Scripting C# & .NET
1

Hey All!

I’ve been running into this annoying problem in which my 2nd scene doesn’t load most of the time. It loads about 5% of the time (just a guess). The level isn’t that big and when it does load it takes a second. My code below:

#pragma strict

import UnityEngine.UI;
import UnityEngine.SceneManagement;

public var entryPoint : Transform;
public var loadScreenObject : GameObject;

public var loadingBar : Slider;
private var lvl : int;

private var async : AsyncOperation;

function OnTriggerEnter(col : Collider) {

    if(col.gameObject.tag == "Player") {
         LoadingScreen(lvl);
    }
}

function LoadingScreen(lvl : int) {
    loadScreenObject.SetActive(true);
    async = SceneManager.LoadSceneAsync(2);
    GameControl.control.newPosition = entryPoint;

    async.allowSceneActivation = false;

    while (async.isDone){
        loadingBar.value = async.progress;
        yield;

        if (async.progress >= 0.9f){
            loadingBar.value = 1f;

            async.allowSceneActivation = true;

        }
    }

}

Please let me know if you have any recommendations or suggestions. It should, and has, worked like this. I changed “lvl” to the current “2” in LoadSceneAsync because I thought that was the problem. When I first changed it the code worked once. Now it doesn’t.

Thanks for your time!

2

Nevermind. The issue lies with “async.isDone”. I changed it to “!async.allowSceneActivation”. Everything seems to work consistently now.

3

Nevermind again. It seems to be an issue with the speed of which I enter my trigger. I have no idea why. If I walk into the trigger it works, but any faster (running, in this case) it doesn’t go into the while() loop. Any suggestions?

4

Okay, I figured it out. Running into it will fire the Trigger more than once (or the function within) so I had to create a boolean to prevent it from firing twice. The double load of my scene is what initially prevented anything from loading.

Final code in case anyone wants to use it.

#pragma strict

import UnityEngine.UI;
import UnityEngine.SceneManagement;

public var entryPoint : Transform;
public var loadScreenObject : GameObject;

public var loadingBar : Slider;
public var lvl : String;
private var loading : boolean = false;

private var async : AsyncOperation;

function OnTriggerEnter(col : Collider) {

    if(col.gameObject.tag == "Player") {

        if(!loading) {
             LoadingScreen(lvl);
             loading = true;
         }
    }
}

function LoadingScreen(lvl : String) {
    loadScreenObject.SetActive(true);
    async = SceneManager.LoadSceneAsync(lvl);
    GameControl.control.newPosition = entryPoint;

    async.allowSceneActivation = false;

    while (!async.allowSceneActivation){
        loadingBar.value = async.progress;
        yield;

        if (async.progress >= 0.9f){
            loadingBar.value = 1f;

            async.allowSceneActivation = true;

        }
    }
}
1 Like
5

@path14 You are a Freaking legend man. No puns intended. You don’t know how much I have been struggling with this problem.
I have been searching every post to find the solution, but couldn’t find any solution and at last!!!. Kudos to you man, thanx again man, really appreciate the solution.

P.S. I know this is an old post, but still thanx.

1 Like