Joining the Dots

// Function to display game instructions
function displayInstructions() {
    console.log('Welcome to Rock Paper Scissors.\n');
    console.log('The rules are simple:');
    console.log('1. Rock beats scissors');
    console.log('2. Scissors beat paper');
    console.log('3. Paper beats rock');
}
// Function to ask for the number of rounds
function getRounds(){
  let rounds;
  do {
    rounds = prompt('How many rounds would you like to play? \nRounds: ');
    rounds = parseInt(rounds);
    if (isNaN(rounds) || rounds <= 0) {
      console.log('Please enter a valid positive integer for rounds.');
    }
  } while (isNaN(rounds) || rounds <= 0);
  return rounds;
}
// Function to get the player's choice
function getPlayerChoice(){
  const validChoices = ['rock', 'paper', 'scissors'];
  let playerChoice;
  do {
    playerChoice = prompt('Please enter rock, paper, or scissors. \nChoice: ').toLowerCase();
    if (!validChoices.includes(playerChoice)) {
      console.log('Invalid choice. Please enter either rock, paper, or scissors.');
    }
  } while (!validChoices.includes(playerChoice));
  return playerChoice;
}
// Function to get the computer’s choice
function getComputerChoice(){
    const options = ['rock', 'paper', 'scissors'];
    const computerChoice = options[Math.floor(Math.random() * options.length)];
    console.log('Computer chooses', computerChoice);
    return computerChoice;
}
// Function to determine the winner of the round
function determineRoundWinner(playerChoice, computerChoice) {
    if (playerChoice === computerChoice) {
        console.log('Tie!');
        return 'tie';
    } else if (playerChoice === 'rock' && computerChoice === 'scissors') {
        console.log('You win!');
        return 'player';
    } else if (playerChoice === 'rock' && computerChoice === 'paper') {
        console.log('Computer wins!');
        return 'computer';
    } else if (playerChoice === 'paper' && computerChoice === 'rock') {
        console.log('You win!');
        return 'player';
    } else if (playerChoice === 'paper' && computerChoice === 'scissors') {
        console.log('Computer wins!');
        return 'computer';
    } else if (playerChoice === 'scissors' && computerChoice === 'rock') {
        console.log('Computer wins!');
        return 'computer';
    } else if (playerChoice === 'scissors' && computerChoice === 'paper') {
        console.log('You win!');
        return 'player';
    }
}
// Function to contain the flow of the whole program
function main(){  
    let playerScore = 0
    let computerScore = 0
    displayInstructions();
    const rounds = getRounds();
    const playerChoice = getPlayerChoice();
    const computerChoice = getComputerChoice();
    const winner = determineRoundWinner(playerChoice, computerChoice);
    if(winner === 'player'){
        playerScore++;
    } else if(winner === 'computer'){
        computerScore++;
    }
    console.log('Player score:', playerScore, '| Computer score:', computerScore);
}