Swift Game Development - Third Edition

Tracking the player's progress

First, we need to keep track of how far the player has flown. We will use this later as well, for keeping track of a high score. This is easy to implement. Follow these steps to track how far the player has flown:

1. In the GameScene.swift file, add two new properties to the GameScene class:

           let initialPlayerPosition = CGPoint(x: 150, y: 250) 
   var playerProgress = CGFloat() 

2. In the didMove function, update the line that positions the player to use the new initialPlayerPosition constant instead of the old hardcoded value:

           // Add the player to the scene: 
   player.position = initialPlayerPosition

3. In the didSimulatePhysics function, update the new playerProgress property with the player's new distance:

    // Keep track of how far ...