Variable Smooth Step

class Example extends Phaser.Scene
{
    speed2;
    speed1;
    bullet2;
    bullet1;

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.image('bullet', 'assets/tests/timer/bullet-bill.png');
        this.load.image('cannon', 'assets/tests/timer/cannon.png');
        this.load.image('ground', 'assets/tests/timer/ground.png');
    }

    create ()
    {
        //   Bullet 1 (600px in 6 seconds)

        this.add.image(0, 200, 'ground').setOrigin(0);

        this.bullet1 = this.add.image(64, 76, 'bullet').setOrigin(0);

        this.speed1 = Phaser.Math.GetSpeed(600, 6);

        this.add.image(64, 72, 'cannon').setOrigin(0);

        this.add.text(64, 50, '600px / 6 secs', { fill: '#000' });

        //   Bullet 2 (600px in 3 seconds)

        this.add.image(0, 500, 'ground').setOrigin(0);

        this.bullet2 = this.add.image(64, 376, 'bullet').setOrigin(0);

        this.speed2 = Phaser.Math.GetSpeed(600, 3);

        this.add.image(64, 500, 'cannon').setOrigin(0, 1);

        this.add.text(64, 350, '600px / 3 secs', { fill: '#000' });
    }

    update (time, delta)
    {
        this.bullet1.x += this.speed1 * delta;

        if (this.bullet1.x > 864)
        {
            this.bullet1.x = 64;
        }

        this.bullet2.x += this.speed2 * delta;

        if (this.bullet2.x > 864)
        {
            this.bullet2.x = 64;
        }
    }
}

const config = {
    type: Phaser.CANVAS,
    width: 800,
    height: 600,
    parent: 'phaser-example',
    backgroundColor: '#9adaea',
    useTicker: true,
    scene: Example
};

const game = new Phaser.Game(config);
                        

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