sprite.anims.nextAnim change to undefined, will not recover from it

[Pythux]

Version

• Phaser Version: 3.55.2

Description

https://newdocs.phaser.io/docs/3.55.1/Phaser.GameObjects.Sprite#chain
https://newdocs.phaser.io/docs/3.55.2/Phaser.Animations.AnimationState#nextAnim

Chaining an animation set anims.nextAnim, if null, to the animation to chain, but after running sprite.play(...) the value turn to undefined, thus the animation to chain goes to anims.nextAnimsQueue leaving anims.nextAnim to undefined forever.

Example Test Code

console.log(sprite.anims.nextAnim) // null
sprite.chain(key)
console.log(sprite.anims.nextAnim) // given key
sprite.play(key)
console.log(sprite.anims.nextAnim) // undefined, it's a bug ?

full running code: (run on https://labs.phaser.io/edit.html)

class Example extends Phaser.Scene
{
    constructor ()
    {
        super();
    }

    preload ()
    {
        this.load.atlas('knight', 'assets/animations/knight.png', 'assets/animations/knight.json');
        this.load.image('bg', 'assets/skies/clouds.png');
    }

    create ()
    {
        //  The background and floor
        this.add.image(400, 16, 'bg').setOrigin(0.5, 0);

        var text = this.add.text(400, 8, 'Click to execute the bug (see logs)', { color: '#ffffff' }).setOrigin(0.5, 0);

        //  Our animations
        this.anims.create({
            key: 'guardStart',
            frames: this.anims.generateFrameNames('knight', { prefix: 'guard_start/frame', start: 0, end: 3, zeroPad: 4 }),
            frameRate: 8
        });

        this.anims.create({
            key: 'idle',
            frames: this.anims.generateFrameNames('knight', { prefix: 'idle/frame', start: 0, end: 5, zeroPad: 4 }),
            frameRate: 8,
            repeat: -1
        });

        var lancelot = this.add.sprite(500, 300)

        lancelot.setScale(8);
        lancelot.play('idle');

        // the bug to run here:
        this.input.on('pointerdown', function () {
            console.log(lancelot.anims.nextAnim) // null
            lancelot.chain('guardStart')
            console.log(lancelot.anims.nextAnim) // guardStart
            lancelot.play('idle')
            console.log(lancelot.anims.nextAnim) // undefined, it's a bug ?

        }, this)

    }
}

const config = {
    type: Phaser.AUTO,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    backgroundColor: '#026bc6',
    pixelArt: true,
    scene: [ Example ]
};

const game = new Phaser.Game(config);

[photonstorm]

Thank you for submitting this issue. We have fixed this and the fix has been pushed to the master branch. It will be part of the next release. If you get time to build and test it for yourself we would appreciate that.