update(time, delta)
    {
        //console.log("time:"+time, "delta"+ delta);
        for(var i = 0; i < STARFIELDSIZE; i++)
        {
            starFieldQI[i].sprite.x -= starFieldQI[i].trajectorynorm.x * starFieldQI[i].speed;
            starFieldQI[i].sprite.y -= starFieldQI[i].trajectorynorm.y * starFieldQI[i].speed;
            starFieldQI[i].increaseSpeed();

        }
    }


class Star
{
    constructor(starSprite, origin)
    {
        this.sprite = starSprite;
        this.slope = this.sprite.y/this.sprite.x;
        this.trajectory = new Phaser.Math.Vector2(this.sprite.x - origin.x , this.sprite.y - origin.y);
        this.trajectorynorm = this.trajectory.normalize();
        this.speed = 2;
    }
    increaseSpeed()
    {
        this.speed+= 0.10;
    }



}