Uncaught TypeError: Cannot read properties of undefined (reading 'play')

[yash_mehrotra]

loading game scene for the first time works fine.

issue on the second time while loading the same game scene.

[yaustar]

You will need to share some code/a project that shows the problem for the community to help more.

Offhand, it looks like you still have a reference to object from the scene that was destroyed instead of the one that is in the new scene that created

[yash_mehrotra]

I took reference from these links -

Rigidbody is undefined

Hey guys i have a problem that keep occuring pretty often, when the level is changed though ingame event my rigidbody for player suddenly dissapear from the components as i debugged, although it should be there , it is there when i play the certain scene from the editor but dissapear when scene is changed, there is no script that is removing rigidbodies or so on. this is what debbuger showed up: [image]

Duplicated entities even though old scene is destroyed

sorry, but can I know which parts you have updated cause I cannot see the difference haha. I would like to learn for future reference, also which part did I do it wrong?

Please verify if all the events are properly subscribed and unsubscribed in this script.

https://playcanvas.com/editor/code/935419?tabs=89036499

[yaustar]

There issue is here:

    this.app.on('destroy', () => {

        this.setEventsOnOff('off');

        this.app.off('OnFinish', this.onFinish, this);
        this.app.off('OnCollect', this.onCollect, this);
        // this.app.off('OnObstacle', this.onObstacle, this);

        this.app.off('attr:loop', this.resetPosition, this);    
        this.app.off('attr:yoyo', this.resetPosition, this);  
        this.app.off('attr:delay', this.resetPosition, this);  
        this.app.off('attr:repeat', this.resetPosition, this);
        this.app.off('attr:easing', this.resetPosition, this);

        this.app.off('attr:duration', function (value) { this.tween.duration = value;}, this);

        this.menuButton.button.off('click', this.loadMenu, this);
        this.playButton.button.off('click', this.playGame, this);
    });

You are listening for the destroy event for the app, not the script type.

It should be:

this.on('destroy', () => {

The OnCollect event was never unsubscribed so when the bird collected something, it was calling an old listener.

[yash_mehrotra]

Thankyou It worked.