37、猜数字游戏开发指南

猜数字游戏开发指南

1. 功能函数编写

首先，我们要添加处理用户猜数字和生成随机数的功能函数，代码如下：

//  function called from the GuessInputViewController when the user taps on the Save 
// Button button
func userDidFinish(_ controller: GuessInputViewController, guess:  String) {
    userGuessLabel.text = "The guess was " +  guess
    previousGuess = guess
    let numberGuess = Int(guess)
    if (numberGuess! > randomNumber){
        resultLabel.text = "Guess too high"
    }
    else if (numberGuess! < randomNumber) {
        resultLabel.text = "Guess too low"
    }
    else {
        resultLabel.text = "Guess is correct"
        playAgainButton.isHidden = false //show the play again button
        guessButton.isHidden = true //hide the guess again number
    }