How to make sprite patrol

[samathir]

Hi, I'm new to Phaser 3 and right now I'm trying to make enemy move animatedly in a path.

Now It can move in path but I'm struggling on making sprie move animatedly.

 var config = {
        type: Phaser.AUTO,
        width: 800,
        height: 600,
        physics: {
            default: 'arcade',
            arcade: {
                gravity: { y: 0 },
                debug: false
            }
        },
        scene: {
            preload: preload,
            create: create,
            update: update
        }
    };

    var platforms;
    var game = new Phaser.Game(config);



    function preload ()
    {
        this.load.image('sky', 'assets/sky.png');
        this.load.spritesheet('npc3', 'assets/npc.png', { frameWidth: 32, frameHeight: 48 });
    }



    function create ()
    {
        
        this.add.image(400, 300, 'sky');
        platforms = this.physics.add.staticGroup();

        
        
        var graphics = this.add.graphics();
        // the path for our enemies
        // parameters are the start x and y of our path
        path = this.add.path(150, 150);
        path.lineTo(300, 150);
        path.lineTo(300, 300);
        path.lineTo(150, 300);
        path.lineTo(150, 150);

        graphics.lineStyle(3, 0xffffff, 1);
        
        // visualize the path
/*
        path.draw(graphics);
*/

        enemy =  this.add.follower(path, 0, 0, 'npc3'); // what is 0, 0


        enemy.startFollow({
            positionOnPath: true,
            duration: 8000,

            repeat: -1,
            rotateToPath: false,
            verticalAdjust: true
        });


    }


    function update (){

    }

Any help in getting pointed in the right direction would be appreciated.