App.destroy() error

Help & Support
#1

Hello, i’m trying to destroy application, but getting error. What can i do to solve this issue? :worried:

Here is log:

TypeError: this.registry._loader.getHandler(...) is undefined
    Asset.prototype.getPreferredFile
    Asset.prototype.getFileUrl
    Asset.prototype.unload
    Application.prototype.destroy

Here is code, where error appears:

...
if (this.type === "texture") {
      var device = this.registry._loader.getHandler("texture")._device;
...

Here is my scene:
https://playcanvas.com/editor/scene/474007

If anyone can help, I’d greatly appreciate it!

#2

I’m looking at the project you linked to but there is no code there to look at? On top of that, what is the need for destroying the app object?

#3

Code doesn’t matter, because even if you try to call app.destroy() in just generated project, without any changes in it, you’ll get this error. The need for destroying is that i have fullpage scroll, where many of sections are without webGL content, so to optimize perfomance i want destroy the app, when it is out of sight.

#4

Ah, I see… In that case, it would be easier to hide or remove the iframe of the application on the webpage?

Edit: Example:

<!DOCTYPE html>
<html  lang="en">
<head>

<meta charset="utf-8">
<!--<meta name="viewport" content="width=device-width, initial-scale=1.0">-->

<title>untitled document</title>

<style>
body{
    margin:0;
 }
.embedVideo {
    position:relative;
    padding-bottom:56.25%;
    height:0;
 }
.embedVideo iframe{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    border:0;
 }
</style>

<script>
function removeContent() {
document.getElementById('foobar').innerHTML = '';
}
</script>

</head>
<body>

<div id="foobar" class="embedVideo">
<iframe id='frame' 
	src='http://s3-eu-west-1.amazonaws.com/apps.playcanvas.com/nm4ZdNS6/index.html?overlay=false'
	webkitallowfullscreen='true'
	mozallowfullscreen='true'
	allowfullscreen='true'
	allowvr
	scrolling='no'
	frameBorder='0'>
</iframe>
</div>

<button onclick="removeContent()">Remove content</button>

</body>
</html>
1 Like
#5

This bug is still present as of today – I can see many use cases for a method for destroying the whole app, which is why I reckon the function is there, but it’s throwing these errors when run. Has anybody found a workaround for this?