Delta History

class Example extends Phaser.Scene
{
    speed = (600 / 2) / 1000;
    delta;
    time;
    image;

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.image('bunny', 'assets/sprites/bunny.png');
        this.load.atlas('gems', 'assets/tests/columns/gems.png', 'assets/tests/columns/gems.json');
    }

    create ()
    {
        this.delta = this.add.text(32, 32);
        this.time = this.add.text(500, 400);

        this.image = this.add.image(0, 200, 'bunny');

        this.anims.create({ key: 'diamond', frames: this.anims.generateFrameNames('gems', { prefix: 'diamond_', end: 15, zeroPad: 4 }), repeat: -1 });
        this.anims.create({ key: 'prism', frames: this.anims.generateFrameNames('gems', { prefix: 'prism_', end: 6, zeroPad: 4 }), repeat: -1 });
        this.anims.create({ key: 'ruby', frames: this.anims.generateFrameNames('gems', { prefix: 'ruby_', end: 6, zeroPad: 4 }), repeat: -1 });
        this.anims.create({ key: 'square', frames: this.anims.generateFrameNames('gems', { prefix: 'square_', end: 14, zeroPad: 4 }), repeat: -1 });

        this.add.sprite(400, 100, 'gems').play('diamond');
        this.add.sprite(400, 200, 'gems').play('prism');
        this.add.sprite(400, 300, 'gems').play('ruby');
        this.add.sprite(400, 400, 'gems').play('square');
    }

    update (timestep, dt)
    {
        this.image.x += this.speed * dt;

        if (this.image.x > 1000)
        {
            this.image.x = 0;
        }

        this.time.setText(`time: ${this.sys.game.loop.time.toString()}`);

        this.delta.setText(this.sys.game.loop.deltaHistory);
    }
}

const config = {
    type: Phaser.CANVAS,
    width: 800,
    height: 600,
    parent: 'phaser-example',
    backgroundColor: '#2d2d2d',
    useTicker: true,
    scene: Example
};

const game = new Phaser.Game(config);
                        

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