SmallDesk 
Start 100DaysOfSwiftUI from 2020.Mar.18th.
Day 25: Milestone: Projects 1-3
done with 30 min.
New findings: followings are new findings
- how to use id: with ForEach, and why ForEach needs to know id
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var possibleMoves = ["Rock", "Paper", "Scissors"] @State var choice = Int.random(in: 0...2) @State var shouldWin = Bool.random() @State var scoreTitle = "" @State var playerScore = 0 @State var showScore = false var body: some View { VStack(spacing: 10) { Text("Score : \(playerScore)") Text("Computer: \(possibleMoves[choice])") Text(shouldWin ? "Need to win!" : "Need to loose") HStack { Button("Rock") { if ( ((self.shouldWin)&&(self.choice == 2)) || ((!self.shouldWin)&&(self.choice == 1))) { self.playerScore += 3 self.scoreTitle = "YOU WIN !" } else { self.playerScore -= 1 self.scoreTitle = "YOU LOOSE !" } self.showScore = true } Button("Paper") { if ( ((self.shouldWin)&&(self.choice == 0)) || ((!self.shouldWin)&&(self.choice == 2))) { self.playerScore += 3 self.scoreTitle = "YOU WIN !" } else { self.playerScore -= 1 self.scoreTitle = "YOU LOOSE !" } self.showScore = true } Button("Scissors") { if ( ((self.shouldWin)&&(self.choice == 1)) || ((!self.shouldWin)&&(self.choice == 0))) { self.playerScore += 3 self.scoreTitle = "YOU WIN !" } else { self.playerScore -= 1 self.scoreTitle = "YOU LOOSE !" } self.showScore = true } } } .alert(isPresented: $showScore ) { Alert(title: Text(scoreTitle), message: Text("your score : \(playerScore)"), dismissButton: .default(Text("OK")){ self.askAgain() }) } } func askAgain() { choice = Int.random(in: 0...2) shouldWin = Bool.random() } |
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