Drag Matter Physics Bodies

class Example extends Phaser.Scene
{
    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v410');
        this.load.image('block', 'assets/sprites/block.png');
    }

    create ()
    {
        this.matter.world.setBounds();

        this.matter.add.image(400, 100, 'block', null, { chamfer: 16 }).setBounce(0.9);

        //  These both do the same thing:

        // this.matter.add.pointerConstraint({ length: 1, stiffness: 0.6 });

        this.matter.add.mouseSpring({ length: 1, stiffness: 0.6 });
    }
}

const config = {
    scale: { mode: Phaser.Scale.FIT },
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#1b1464',
    parent: 'game-container',
    physics: {
        default: 'matter'
    },
    scene: Example
};

const game = new Phaser.Game(config);