ZIO learning - guess number game / published by https://github.com/dacr/code-examples-manager #f20513ba-84fb-453a-b67c-25701c5fe819/2f38352b19728c8cb5252498731451c95922bce4

zio-learning-13-game-guess-number.sc

// summary : ZIO learning - guess number game
// keywords : scala, zio, learning, pure-functional, number-guess
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : f20513ba-84fb-453a-b67c-25701c5fe819
// created-on : 2021-10-30T09:50:44+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "dev.zio::zio:2.0.13"
//> using dep "dev.zio::zio-test:2.0.13"
//> using dep "fr.janalyse::zio-worksheet:2.0.13.0"
// ---------------------
import zio.*, zio.worksheet.*

val guessNumberGameLogic = for {
  _             <- Console.printLine("Let's play a guess number game")
  limit         <- System.envOrElse("GAME_LIMIT", "5").mapAttempt(_.toInt)
  numberToGuess <- Random.nextIntBounded(limit)
  _             <- Console.printLine(s"Your choice( 0<=?<$limit) :")
  givenNumber   <- Console.readLine.mapAttempt(_.toInt)
  result         = if (numberToGuess == givenNumber) "YOU WIN" else "YOU LOOSE"
  _             <- Console.printLine(result)
  _             <- Console.printLine("Play again (yes/no) ? ")
  playAgain     <- Console.readLine.map(_.trim.toLowerCase)
} yield "no" != playAgain

guessNumberGameLogic.repeatWhileEquals(true).unsafeRun