app.js

/*
GAME RULES:

- The game has 2 players, playing in rounds
- In each turn, a player rolls a dice as many times as he whishes. Each result get added to his ROUND score
- BUT, if the player rolls a 1, all his ROUND score gets lost. After that, it's the next player's turn
- The player can choose to 'Hold', which means that his ROUND score gets added to his GLBAL score. After that, it's the next player's turn
- The first player to reach 100 points on GLOBAL score wins the game

*/

/*
YOUR 3 CHALLENGES
Change the game to follow these rules:

1. A player looses his ENTIRE score when he rolls two 6 in a row. After that, it's the next player's turn. (Hint: Always save the previous dice roll in a separate variable)
(done)2. Add an input field to the HTML where players can set the winning score, so that they can change the predefined score of 100. (Hint: you can read that value with the .value property in JavaScript. This is a good oportunity to use google to figure this out :)
(done)3. Add another dice to the game, so that there are two dices now. The player looses his current score when one of them is a 1. (Hint: you will need CSS to position the second dice, so take a look at the CSS code for the first one.)
*/


let scores, roundScore, activePlayer;

init();

/*****************
BUTTON Roll dices
*****************/
document.querySelector('.btn-roll').addEventListener('click', function () {
    //1. random number
    let dice1 = Math.floor(Math.random() * 6) + 1;
    let dice2 = Math.floor(Math.random() * 6) + 1;

    //2. display result
    document.getElementById('dice1').style.display = 'block';
    document.getElementById('dice2').style.display = 'block';
    document.getElementById('dice1').src = `dice-${dice1}.png`;
    document.getElementById('dice2').src = `dice-${dice2}.png`;

    //3. Update the round score IF the rolled number was NOT a 1
    if (dice1 !== 1 && dice2 !== 1) {
        //add score
        roundScore += dice1 + dice2;
        document.querySelector('#current-' + activePlayer).textContent = roundScore;
    } else {
        //next player
        nextPlayer();
    }

});

/*****************
BUTTON Hold score
*****************/
document.querySelector('.btn-hold').addEventListener('click', function () {
    //1. Add  current score to Global score
    scores[activePlayer] += roundScore;

    //update UI
    document.querySelector('#score-' + activePlayer).textContent = scores[activePlayer];

    let input = document.querySelector('.final-score').value;
    let winningScore;

    // Undefined, 0, null or "" are COERCED to false
    // Anything else is COERCED to true
    if (input) {
        winningScore = input;
    } else {
        winningScore = 100;
    }

    //check if player won the game
    if (scores[activePlayer] >= winningScore) {
        document.querySelector('#name-' + activePlayer).textContent = 'WINNER!';
        document.getElementById('dice1').style.display = 'none';
        document.getElementById('dice2').style.display = 'none';
        document.querySelector(`.player-${activePlayer}-panel`).classList.add('winner');
        document.querySelector(`.player-${activePlayer}-panel`).classList.remove('active');
    } else {
        nextPlayer();
    }

});

/*****************
Change player
*****************/
function nextPlayer() {
    //next player
    activePlayer === 0 ? activePlayer = 1 : activePlayer = 0;
    roundScore = 0;

    document.getElementById('current-0').textContent = '0';
    document.getElementById('current-1').textContent = '0';

    document.querySelector('.player-0-panel').classList.toggle('active');
    document.querySelector('.player-1-panel').classList.toggle('active');

    document.getElementById('dice1').style.display = 'none';
    document.getElementById('dice2').style.display = 'none';
};

/*****************
Reset data
*****************/
document.querySelector('.btn-new').addEventListener('click', init);

function init() {
    scores = [0, 0];
    activePlayer = 0;
    roundScore = 0;

    document.getElementById('dice1').style.display = 'none';
    document.getElementById('dice2').style.display = 'none';
    document.getElementById('score-0').textContent = '0';
    document.getElementById('score-1').textContent = '0';
    document.getElementById('current-0').textContent = '0';
    document.getElementById('current-0').textContent = '0';
    document.getElementById('name-0').textContent = 'Player 1';
    document.getElementById('name-1').textContent = 'Player 2';
    document.querySelector('.player-0-panel').classList.remove('winner');
    document.querySelector('.player-1-panel').classList.remove('winner');
    document.querySelector('.player-0-panel').classList.remove('active');
    document.querySelector('.player-1-panel').classList.remove('active');
    document.querySelector('.player-0-panel').classList.add('active');
}