javascript – 如何在Phaser / PixiJS中缩放精灵的大小而不改变位置？

create() {
    //Create the sprite group and scale it down to 30%
    this.pieces = this.add.group(undefined,"pieces",truE);
    this.pieces.scale.x = 0.3;
    this.pieces.scale.y = 0.3;

    //Add the players to the middle of the stage and add them to the 'pieces' group
    var middle = new Phaser.Point( game.stage.width/2,game.stage.height/2);
    var player_two = this.add.sprite(middle.x - 50,middle.y,'image1',undefined,this.pieces);
    var player_one = this.add.sprite(middle.x,middle.y-50,'image2',this.pieces);
}

但是,由于精灵尺寸的缩小,它们的起始位置也被缩放,所以相反出现在舞台的中间,它们只显示到中间距离的30％.

如何缩小精灵图片而不影响他们的位置？

(代码是附带的在Typescript,但我认为这个特定的样本也是javascript,所以这可能是无关紧要)