Adding the restart game menu

The restart menu is even simpler to implement. Rather than creating a new scene, we can extend our existing HUD class to display a restart button when the game ends. We will also include a smaller button to return the player to the main menu. This menu will appear on top of the action, as seen in this screenshot:

Extending the HUD

First, we need to create and draw our new button nodes in the HUD class. Follow these steps to add the nodes:

1. Open the HUD.swift file and add two new properties to the HUD class, as follows:

           let restartButton = SKSpriteNode() 
           let menuButton = SKSpriteNode() 
   

2. Add the following code at the bottom of the createHudNodes function:

           // Add the restart and menu button textures to the nodes: 
           restartButton.texture =  
               textureAtlas.textureNamed("button-restart") 
           menuButton.texture =  
               textureAtlas.textureNamed("button-menu") 
           // Assign node...