script.js

let xp = 0;
let health = 100;
let gold = 50;
let currentWeapon = 0;
let fighting;
let monsterHealth;
let inventory = ['stick'];

const button1 = document.querySelector('#button1');
const button2 = document.querySelector('#button2');
const button3 = document.querySelector('#button3');
const text = document.querySelector('#text');
const xpText = document.querySelector('#xpText');
const healthText = document.querySelector('#healthText');
const goldText = document.querySelector('#goldText');
const monsterStats = document.querySelector('#monsterStats');
const monsterName = document.querySelector('#monsterName');
const monsterHealthText = document.querySelector('#monsterHealth');
const weapons = [
	{ name: 'stick', power: 5 },
	{ name: 'dagger', power: 30 },
	{ name: 'claw hammer', power: 50 },
	{ name: 'sword', power: 100 },
];
const monsters = [
	{
		name: 'slime',
		level: 2,
		health: 15,
	},
	{
		name: 'fanged beast',
		level: 8,
		health: 60,
	},
	{
		name: 'dragon',
		level: 20,
		health: 300,
	},
];
const locations = [
	{
		name: 'town square',
		'button text': ['Go to store', 'Go to cave', 'Fight dragon'],
		'button functions': [goStore, goCave, fightDragon],
		text: 'You are in the town square. You see a sign that says "Store".',
	},
	{
		name: 'store',
		'button text': [
			'Buy 10 health (10 gold)',
			'Buy weapon (30 gold)',
			'Go to town square',
		],
		'button functions': [buyHealth, buyWeapon, goTown],
		text: 'You enter the store.',
	},
	{
		name: 'cave',
		'button text': ['Fight slime', 'Fight fanged beast', 'Go to town square'],
		'button functions': [fightSlime, fightBeast, goTown],
		text: 'You enter the cave. You see some monsters.',
	},
	{
		name: 'fight',
		'button text': ['Attack', 'Dodge', 'Run'],
		'button functions': [attack, dodge, goTown],
		text: 'You are fighting a monster.',
	},
	{
		name: 'kill monster',
		'button text': [
			'Go to town square',
			'Go to town square',
			'Go to town square',
		],
		'button functions': [goTown, goTown, goTown],
		text: 'The monster screams "Arg!" as it dies. You gain experience points and find gold.',
	},
	{
		name: 'lose',
		'button text': ['REPLAY?', 'REPLAY?', 'REPLAY?'],
		'button functions': [restart, restart, restart],
		text: 'You die. ☠',
	},
	{
		name: 'win',
		'button text': ['REPLAY?', 'REPLAY?', 'REPLAY?'],
		'button functions': [restart, restart, restart],
		text: 'YOU WIN THE GAME! 🎉',
	},
	{
		name: 'easter egg',
		'button text': ['2', '8', 'Go to town square?'],
		'button functions': [pickTwo, pickEight, easterEgg],
		text: 'You find a secret game. Pick a number above. Ten numbers will be randomly chosen between 0 and 10. If the number you choose matches one of the random numbers, you win!',
	},
];

// initialize buttons
button1.onclick = goStore;
button2.onclick = goCave;
button3.onclick = fightDragon;

function update(location) {
	monsterStats.style.display = 'none';
	button1.innerText = location['button text'][0];
	button2.innerText = location['button text'][1];
	button3.innerText = location['button text'][2];
	button1.onclick = location['button functions'][0];
	button2.onclick = location['button functions'][1];
	button3.onclick = location['button functions'][2];
	text.innerHTML = location.text;
}

function goTown() {
	update(locations[0]);
}

function goStore() {
	update(locations[1]);
}

function goCave() {
	update(locations[2]);
}

function buyHealth() {
	if (gold >= 10) {
		gold -= 10;
		health += 10;
		goldText.innerText = gold;
		healthText.innerText = health;
	} else {
		text.innerText = 'You do not have enough gold to buy health.';
	}
}

function buyWeapon() {
	if (currentWeapon < weapons.length - 1) {
		if (gold >= 30) {
			gold -= 30;
			currentWeapon++;
			goldText.innerText = gold;
			let newWeapon = weapons[currentWeapon].name;
			text.innerText = 'You now have a ' + newWeapon + '.';
			inventory.push(newWeapon);
			text.innerText += ' In your inventory you have: ' + inventory;
		} else {
			text.innerText = 'You do not have enough gold to buy a weapon.';
		}
	} else {
		text.innerText = 'You already have the most powerful weapon!';
		button2.innerText = 'Sell weapon for 15 gold';
		button2.onclick = sellWeapon;
	}
}

function sellWeapon() {
	if (inventory.length > 1) {
		gold += 15;
		goldText.innerText = gold;
		let currentWeapon = inventory.shift();
		text.innerText = 'You sold a ' + currentWeapon + '.';
		text.innerText += ' In your inventory you have: ' + inventory;
	} else {
		text.innerText = "Don't sell your only weapon!";
	}
}

function fightSlime() {
	fighting = 0;
	goFight();
}

function fightBeast() {
	fighting = 1;
	goFight();
}

function fightDragon() {
	fighting = 2;
	goFight();
}

function goFight() {
	update(locations[3]);
	monsterHealth = monsters[fighting].health;
	monsterStats.style.display = 'block';
	monsterName.innerText = monsters[fighting].name;
	monsterHealthText.innerText = monsterHealth;
}

function attack() {
	text.innerText = 'The ' + monsters[fighting].name + ' attacks.';
	text.innerText +=
		' You attack it with your ' + weapons[currentWeapon].name + '.';
	health -= getMonsterAttackValue(monsters[fighting].level);
	if (isMonsterHit()) {
		monsterHealth -=
			weapons[currentWeapon].power + Math.floor(Math.random() * xp) + 1;
	} else {
		text.innerText += ' You miss.';
	}

	healthText.innerText = health;
	monsterHealthText.innerText = monsterHealth;
	if (health <= 0) {
		lose();
	} else if (monsterHealth <= 0) {
		defeatMonster();
	}
	if (fighting === 2) {
		winGame();
	} else {
		defeatMonster();
	}

	if (Math.random() <= 0.1 && inventory.length !== 1) {
		text.innerText += ' Your ' + inventory.pop() + ' breaks.';
		currentWeapon--;
	}
}

function getMonsterAttackValue(level) {
	const hit = level * 5 - Math.floor(Math.random() * xp);
	console.log(hit);
	return hit > 0 ? hit : 0;
}

function dodge() {
	text.innerText = 'You dodge the attack from the ' + monsters[fighting].name;
}

function defeatMonster() {
	gold += Math.floor(monsters[fighting].level * 6.7);
	xp += monsters[fighting].level;
	goldText.innerText = gold;
	xpText.innerText = xp;
	update(locations[4]);
}

function lose() {
	update(locations[5]);
}

function winGame() {
	update(locations[6]);
}

function restart() {
	xp = 0;
	health = 100;
	gold = 50;
	currentWeapon = 0;
	inventory = ['stick'];
	goldText.innerText = gold;
	healthText.innerText = health;
	xpText.innerText = xp;
	goTown();
}

function isMonsterHit() {
	return Math.random() > 0.2 || health < 20;
}

function easterEgg() {
	update(locations[7]);
}

function pick(guess) {
	const numbers = [];
	while (numbers.length < 10) {
		numbers.push(Math, floor(Math.random() * 11));
	}
	text.innerText = 'You picked ' + guess + '. Here are the random numbers:\n';
	for (let i = 0; i < 10; i++) {
		text.innerText += numbers[i] + '\n';
	}
	if (numbers.includes(guess)) {
		text.innerText += 'Right! You win 20 gold!';
		gold += 20;
		goldText.innerText = gold;
	} else {
		text.innerText += 'Wrong! You lose 10 health!';
		health -= 10;
		healthText.innerText = health;
		if (health <= 0) {
			lose();
		}
	}
}

function pickTwo() {
	pick(2);
}

function pickEight() {
	pick(8);
}