Stagger Play 1

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

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.spritesheet('diamonds', 'assets/sprites/diamonds32x24x5.png', { frameWidth: 32, frameHeight: 24 });
    }

    create ()
    {
        const config = {
            key: 'flash',
            frames: this.anims.generateFrameNumbers('diamonds', { start: 0, end: 4 }),
            frameRate: 1,
            repeat: -1
        };

        this.anims.create(config);

        const group = this.add.group();

        group.createMultiple({ key: 'diamonds', frame: 0, repeat: 279 });

        Phaser.Actions.GridAlign(group.getChildren(), {
            width: 20,
            height: 20,
            cellWidth: 38,
            x: 19,
            y: 25
        });

        this.anims.staggerPlay('flash', group.getChildren(), 60);
    }
}

const config = {
    type: Phaser.AUTO,
    parent: 'phaser-example',
    width: 800,
    height: 600,
    scene: Example
};

const game = new Phaser.Game(config);