Throwing dice

throwing-dice.js

(function () {
    const dice = 3;
    const variations = 6;
    const point = 10;

    function roll() {
        let number = Math.round(Math.random() * variations);
        return number ? number : 1;
    }

    function getTallyAmplifier(total) {
        if (total > variations * dice) throw ("Cheating!");

        if (total === variations * dice) {
            return 2.5;
        }

        if (total >= (variations * dice) / 2) {
            return 2;
        }

        if (total >= (variations * dice) / 3) {
            return 1.5;
        }

        return 1;
    }

    function tally(total) {
        let amplifier = getTallyAmplifier(total);
        let score = total + (total * amplifier);
        console.log({amplifier, total, score});
        return Math.round(score);
    }

    function play(rounds) {
        let score = 0;
        for (let round = 1; round <= rounds; round++) {
            console.log("");
            let total = 0;
            for (var turn = 1; turn <= dice; turn++) {
                let theRoll = roll();
                total += theRoll;
                console.log({round, turn, theRoll, total, score});
            }
            score += tally(total);
        }
        return score;
    }

    var score = play(5);
    console.log(`Your score is ${score}!`);
})();