Now the bird is flapping but there are no enemies, so the game is pretty boring. It's time to add some obstacles: pipes!
To implement the pipes as they were in the original game, we need two classes: PipesNode, which contains the top and bottom pipes, and Pipes, which creates and handles PipesNode.
Let's begin with Pipes and add it as an actor to GameScene:
//... let pipes = Pipes(topPipeTexture: "topPipe.png", bottomPipeTexture: "bottomPipe").addTo(screenNode) actors = [sky, city, ground, bird, pipes] //...
The Pipes class holds the texture name, and it is added to the node tree:
import SpriteKit
class Pipes {
private class var createActionKey : String { get {return "createActionKey"} }
private var parentNode: SKSpriteNode!
private let topPipeTexture: String
private let bottomPipeTexture: String
init(topPipeTexture: String, bottomPipeTexture: String) {
self.topPipeTexture = topPipeTexture
self.bottomPipeTexture = bottomPipeTexture...