Animate.swift

private func animate() {
  var imageIndex: Int = 0
  
  Timer.scheduledTimer(withTimeInterval: 0.025, repeats: true) { timer in
    if imageIndex < self.imageNames.count {
      self.image = Image(self.imageNames[imageIndex])
      imageIndex += 1
    }
    else {
      timer.invalidate()
    }
  }
}