Xcode UIbutton function

Question

I am currently trying to create a clicker/money game and need some help. So basically the app consist of a button which gives +1 coins each time you click it. I would like to change the amount from +1 to +2 if you buy "double coins for 10 coins" as an example.

Click here to see how the app looks right now, it might be easier to understand.

Under is some coding that might be relevant.

    @IBAction func button(_ sender: UIButton) {
    score += 1
    label.text = "Coins: \(score)"
    errorLabel.text = ""
    func doublee(sender:UIButton) {
        score += 2
    }


   @IBAction func points(_ sender: UIButton) {

    if score >= 10 {
    score -= 10
    label.text = "Coins: \(score)"
    doublePoints.isEnabled = false
    xLabel.text = "2X"
    xLabel.textColor = UIColor.blue
    } else {
        errorLabel.text = "ERROR, NOT ENOUGH MONEY"
    }

Keep in mind that I have just started programming and would appreciate all feedback. Thank you!

Answer 1

If I understand your problem correctly, you need some state variable to hold value of how much coins per click you need to add to overall score.

You can do it like this:

  class GameViewController: UIViewController {
     // this is your state variables
     var coinsPerClick = 1
     var score = 0

     override func viewDidLoad() {
      super.viewDidLoad()
      label.text = "Coins: \(score)"
      errorLabel.text = .empty
     }

     @IBAction func getCoins(_ sender: UIButton) {
      score += coinsPerClick
      label.text = "Coins: \(score)"
      // you can clear error label here
      errorLabel.text = .empty
     }

     @IBAction func doubleCoinsPerClick(_ sender: UIButton) {
      guard canUpgrade() else { 
       errorLabel.text = "ERROR, NOT ENOUGH MONEY"
       return
      }

      doublePoints.isEnabled = false
      score -= 10
      coinsPerClick *= 2
      label.text = "Coins: \(score)"
     }

     private func canUpgrade() -> Bool {
      return score >= 10 && doublePoints.isEnabled
     }
    }

Few remarks on your code:

1. Use descriptive names
2. Use indentation to visually separate blocks of code

I hope it will help. Feel free to ask more questions

Answer 2

Add a variable which keeps track of how many points you get when you tap the button, and when you buy the score multipliers, increase the variable accordingly, like so:

var scoreIncrease = 1 // this is how much the score increases when you tap

// This is called when the "CLICK HERE" button is tapped
@IBAction func button(_ sender: UIButton) {
    score += scoreIncrease
    label.text = "Coins: \(score)"
    errorLabel.text = ""
}

// This is called when you buy the 2x
@IBAction func points(_ sender: UIButton) {

  if score >= 10 {
     score -= 10
     label.text = "Coins: \(score)"
     doublePoints.isEnabled = false
     xLabel.text = "2X"
     xLabel.textColor = UIColor.blue
     scoreIncrease *= 2 // increase by x2
  } else {
     errorLabel.text = "ERROR, NOT ENOUGH MONEY"
  }
}