Informing the GameScene class when the player dies

So far, the GameScene class is oblivious to whether the player is alive or dead. We need to change that in order to use our new gameOver function. Open Player.swift, locate the die function, and add the following code at the bottom of the function:

// Alert the GameScene: 
if let gameScene = self.parent as? GameScene { 
    gameScene.gameOver() 
} 

We access GameScene by traveling up the node tree. The Player node's parent is the GameScene class.

Run the project and die. You should see the two new buttons appear after death, as shown here:

Good work. The buttons are displaying properly, but nothing happens yet when we tap on them. To complete our restart menu, we simply need to implement tap events for the two new buttons in the GameScene class's touchesBegan function.