text: // VIRUS animate
  // virus = this.add.sprite(200, 200, 'virus');
  
  // shelfSmall = this.physics.add.staticGroup();
  // shelfLarge = this.physics.add.staticGroup();
  // shelf.create(50, 300, 'ground').setScale(.8);
  // shelf.create(320, 150, 'ground').setScale(1.2);
  // shelf.create(600, 500, 'ground');
  // shelf.create(750, 150, 'ground').setScale(1.4).refreshBody()
  
  // if(randomNumX >= 100) {
  //     shelf.create(randomNumX + 150, randomNumY, 'ground');
  // }
  
  //if previous randomNumX is within 200 of current randomNumX then current randomNumX + 200
  
  // generate one of [shelf, shelfSmall, shelfLarge]
  
  // this.add.image(xy[i], xy[i + 1] - 40, 'tp').setScale(.8);
  // this.add.image(xy[i], xy[i + 1] + 40, 'tp').setScale(.8);
  
  createShelves = () => {
      // let randomNumX;
      // let randomNumY;
      // let shelves = [];
      // for(let i=0; i < 5; i++) { }
      // randomNumX = Math.floor((Math.random() * config.width) + 50);
      // randomNumY = Math.floor((Math.random() * config.height) + 50);
      // shelf.create(randomNumX, randomNumY, 'shelf');
      // shelves.push(shelf);
      // push each generated shelf into array and compare last item in array x and y values and if is with 100px of current generated randomNumX or y then add 100px to x and y to seperate it
      let randomNumX;
      let randomNumY;
  
      for(let i=0; i < 5; i++) {
          randomNumX = Math.floor((Math.random() * config.width) + 50);
          randomNumY = Math.floor((Math.random() * config.height) + 50);
  
          shelf.create(randomNumX, randomNumY, 'shelf');
          this.add.image(randomNumX, randomNumY - 40, 'tp').setScale(1.2);
          this.add.image(randomNumX, randomNumY + 40, 'tp').setScale(1.2);
      }
  }
  createShelves();
  
  
  
  // shelves = this.physics.add.group({
  //     key: 'shelf',
  //     repeat: 5,
  //     setXY: {
  //         x: Math.floor((Math.random() * config.width) + 50),
  //         y: Math.floor((Math.random() * config.height) + 50),
  //         stepX: 100,
  //         stepY: 100
  //     }
  // })
  