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script.js
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script.js
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// css class for different card image
const CARD_TECHS = [
'html5',
'css3',
'js',
'sass',
'nodejs',
'react',
'linkedin',
'heroku',
'github',
'aws'
];
// only list out some of the properties,
// add more when needed
const game = {
score: 0,
level: 1,
timer: 60,
timerDisplay: null,
scoreDisplay: null,
levelDisplay: null,
timerInterval: null,
startButton: null,
cardCount:0,
cardCountTotal:0,
// and much more
};
const cardTwo = [];
setGame();
/*******************************************
/ game process
/******************************************/
function setGame() {
// register any element in your game object
bindStartButton();
}
function deleteCurrentChild(removeItem) {
var instructionEle = document.getElementsByClassName(removeItem);
let i = 0,
length = instructionEle.length;
while(i<length){
instructionEle[0].parentElement.removeChild(instructionEle[0]);
i++;
}
}
function appendCardRandom(card){
var game_board = document.getElementsByClassName('game-board')[0];
var childsNum = game_board.childElementCount-1;
let randomNum = Math.random()*100;
randomIndex = Math.floor(Math.random()*childsNum)
if(randomNum >=80){
game_board.insertBefore(card,game_board.childNodes[randomIndex])
return
}
game_board.appendChild(card);
}
function createCard(name) {
var ele1 = document.createElement('div');
ele1.className = `card ${name}`;
ele1.setAttribute("data-tech",name)
var card_front = document.createElement('div');
card_front.className = 'card__face card__face--front';
var card_back = document.createElement('div');
card_back.className = 'card__face card__face--back';
ele1.appendChild(card_front);
ele1.appendChild(card_back);
document.getElementsByClassName('game-board')[0].appendChild(ele1);
appendCardRandom(ele1);
}
function getRandomCardIndex(num){
let cardList = [];
for(let i =0; i<num; i++){
let temp = Math.floor(Math.random() *10);
cardList.push(temp);
}
return cardList;
}
function createCards(num) {
let cardList = getRandomCardIndex(num*num/2);
for(let i = 0; i<cardList.length; ++i){
let temp = cardList[i];
createCard(CARD_TECHS[temp]);
createCard(CARD_TECHS[temp]);
}
$('.game-board').css("grid-template-columns",`repeat(${num}, 1fr)`)
}
function startGame(num = 2) {
if(game.cardCountTotal===0){
deleteCurrentChild("game-instruction");
}else{
deleteCurrentChild("card");
}
game.timer = 60;
createCards(num);
game.cardCount = 0;
game.cardCountTotal = num*num;
startCount();
handleCardFlip();
}
function handleCardFlip() {
bindCardClick();
}
function nextLevel() {
if(game.cardCountTotal === 4 ){
game.level++;
upadateLevel();
startGame(4);
}else{
game.level++;
upadateLevel();
startGame(6);
}
}
function handleGameOver() {
stopCount();
alert(`Congratulatin Your score is ${game.score}`);
location.reload();
}
/*******************************************
/ UI update
/******************************************/
function updateScore() {
var game_score= document.getElementsByClassName("game-stats__score--value")[0];
game_score.innerHTML = game.score;
}
function upadateLevel() {
var game_level= document.getElementsByClassName("game-stats__level--value")[0];
game_level.innerHTML = game.level;
}
function updateTimerDisplay() {
if(game.timer >0){
let barWidth = (game.timer/60)*100;
let progressBar = document.getElementsByClassName('game-timer__bar')[0];
progressBar.style.width = barWidth + '%';
game.timer--;
var game_time = document.getElementsByClassName("game-timer__bar")[0];
game_time.innerHTML = `${game.timer}s`;
}else{
stopCount();
alert(`Your score is ${game.score}`);
}
}
var idTimer = null;
function startCount(){
idTimer = setInterval(updateTimerDisplay,1000);
}
function stopCount(){
clearInterval(idTimer);
}
/*******************************************
/ bindings
/******************************************/
function bindStartButton() {
var startButton = document.getElementById('game-start_button');
$(startButton).on('click',function(){
startGame();
startButton.innerHTML = "End Game";
unBindStartButton();
})
}
function unBindStartButton() {
var start_button = document.getElementById('game-start_button');
$(start_button).on('click',function(){
alert(`You score is ${game.score}`);
$(start_button).off('click');
stopCount();
location.reload();
})
}
function unBindCardClick(card) {
card.classList.remove('card--flipped');
}
function cardDisposal(card){
if(card[0] === cardTwo[0]){
cardTwo[0].classList.remove('card--flipped');
cardTwo.pop();
return
}
cardTwo.push(card[0]);
if(cardTwo.length ==2){
$('.card').off('click');
let attr1 = cardTwo[0].getAttribute("data-tech"),
attr2 = cardTwo[1].getAttribute("data-tech");
if(attr1 != attr2){
setTimeout(function(){
cardTwo[0].classList.remove('card--flipped');
cardTwo[1].classList.remove('card--flipped');
cardTwo.pop();
cardTwo.pop();
bindCardClick();
},1500)
}else{
bindCardClick();
$(cardTwo[0]).off('click');
$(cardTwo[1]).off('click');
cardTwo.pop();
cardTwo.pop();
game.score += game.timer * game.level;
updateScore();
game.cardCount+=2;
if(game.cardCount === game.cardCountTotal){
if(game.level === 3){
handleGameOver();
return;
}
stopCount();
nextLevel();
}
}
}
}
function bindCardClick() {
$('.card').on('click',function(){
$(this).addClass('card--flipped');
$(this).attr('round',1);
// $(this).off('click');
cardDisposal($(this));
})
}