WifiLamp and ColorSwitchable

Hey Heather Mathewson,

You've set up your protocol properly, now we just need to make the WifiLamp class adopt this protocol and provide its implementation. The challenge is asking us to set the color of the lamp to the new color we are passing into our method. To do this, in the body of our method we would assign the color we are passing in as the parameter to self.color which refers to the instance of color that this method is being called on.

To declare that this class adopts the ColorSwitchable protocol, you need to write a colon after the class name and then specify the name of the protocol. This is the same syntax as subclassing another class. However, if this class was already being subclassed or already adopted another protocol, we would adopt multiple protocols after listing the first by separating them with commas.

// Declare protocol here

protocol ColorSwitchable {
    func switchColor(color: Color)
}

enum LightState {
  case On, Off
}

enum Color {
  case RGB(Double, Double, Double, Double)
  case HSB(Double, Double, Double, Double)
}

class WifiLamp: ColorSwitchable {
  let state: LightState
  var color: Color

  init() {
    self.state = .On
    self.color = .RGB(0,0,0,0)
  }

  func switchColor(color: Color) {
    self.color = color
   }
}

Good Luck!