Mu Online

function solve (array) {
    // Constructing Dungeon string!
    let arr = array.toString();
    let newArray = []; // This array should be used!
    let word = '';
    let index = 0;
    let semiIndex = 1;

    for (let el = 0; el <= arr.length; el++) {
        if (semiIndex % 3 === 0) {
            newArray[index] = '|';
            index++;
            semiIndex = 1;
        }

        if (arr[el] === ' ' || arr[el] === '|'|| el === arr.length) {
            newArray[index] = word;
            index++;
            semiIndex++;
            word = '';
        } else {
            word += arr[el];
        }
    }

    // Walking in dungeon;
    let health = 100;
    let coins = 0;
    let bestRoom = 1;
    let ifMadeIt = true;

    for (let element = 0; element < newArray.length; element += 3) {
        let itemMonster = newArray[element];
        let number = newArray[element + 1];

            // Potion part
        if (itemMonster === 'potion') {
            let currentHealth = health;
            health += Number(number);
            if (health > 100) {
                health = 100;
            }
            console.log(`You healed for ${health - currentHealth} hp.`);
            console.log(`Current health: ${health} hp.`);

            // Chest part
        } else if (itemMonster === 'chest') {
            coins += Number(number);
            console.log(`You found ${number} bitcoins.`);

            // Monster part
        } else {
            health -= Number(number);
            if (health > 0) {
                console.log(`You slayed ${itemMonster}.`);
            } else {
                console.log(`You died! Killed by ${itemMonster}.`);
                ifMadeIt = false;
                break;
            }
        }

        bestRoom++;
    }

    if (ifMadeIt) {
        console.log("You've made it!");
        console.log(`Bitcoins: ${coins}`);
        console.log(`Health: ${health}`);
    } else {
        console.log(`Best room: ${bestRoom}`);
    }
}