Apple Game Frameworks and Technologies

Set the Player’s Direction Using Scales

The next problem you need to fix is Blob’s inability to switch direction visually. At the moment, Blob only faces in one direction regardless of where he’s headed. You can fix Blob’s misguided behavior using the xScale property of the node.

First, open the Player.swift file and modify the moveToPosition(pos:direction:speed:) method to match the following:

func moveToPosition(pos: CGPoint, direction: String, speed: TimeInterval) {
  switch direction {
  case "L":
    xScale = -abs(xScale)
  default:
    xScale = abs(xScale)
  }

  let moveAction = SKAction.move(to: pos, duration: speed)
  run(moveAction)
}

The switch statement evaluates the value in the direction parameter ...