바닐라 자바스크립트로 테트리스 구현하기(1)
유튜브 참고 영상 : https://www.youtube.com/watch?v=rAUn1Lom6dw
HTML
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<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>코드 테트리스 : 초보자를위한 JavaScript 튜토리얼</title>
<link rel="stylesheet" type="text/css" href="./css/styles.css"/>
<script src="./js-trial/main.js" type="module"></script>
</head>
<body>
<h2 class="sect-score">SCORE : <span id="score">...</span></h2>
<button id="btn-start" data-game="ready">START</button>
<div id="game">
<!-- GRID -->
<section id="grid">
</section><!-- grid -->
<section id="miniGrid">
</section><!-- miniGrid -->
</div><!-- game -->
</body>
</html>
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CSS
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@charset "utf-8";
:root{
--bdr:#ccc;
}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{
display:flex;flex-flow:column nowrap;
justify-content:center; align-items:center;
gap:1rem;
width:100%;min-height:100vh;
background:#f1f2f3;
}
#sect-score{position:relative;margin-top:1rem;}
#btn-start{
padding:.5rem 1.5rem;
font-family:inherit;font-weight:bold;
cursor:pointer;
}
#game{
display:flex; flex-flow:row wrap;
justify-content:center; align-items:flex-start;
gap:2rem;
position:relative;
}
#grid, #miniGrid{
display:flex;flex-flow:row wrap;
justify-content:space-between;
position:relative; overflow:hidden;
border:1px solid var(--bdr);
border-left-width:0;
box-shadow:
1px 1px 0 #666,
1px -1px 0 #666,
-1px 1px 0 #666,
-1px -1px 0 #666;
}
#grid{width:36vh; aspect-ratio:1/1.99;}
#miniGrid{
overflow:visible;
margin-top:1.5rem;
width:13vh; aspect-ratio:1/1;}
#miniGrid::before{
content:"UP NEXT"; display:block; position:absolute;
top:0;left:0;
width:100%;
text-align:center;
transform:translateY(-150%);
font-size:0.875rem; font-weight:bold;
}
.grid-cell{
position:relative;
width:10%; aspect-ratio:1/1;
background:#fff;
border:1px solid var(--bdr);
border-top-width:0; border-right-width:0;
transition:.1s;}
#miniGrid .grid-cell{
width:25%;
}
.taken{border:none;} /* 바닥에 깔려있는 애들 */
.tet{background:rgb(70, 70, 83);}
.tet.red{background:red;}
.tet.yellow{background:gold;}
.tet.blue{background:dodgerblue;}
.tet.green{background:mediumaquamarine;}
.tet.purple{background:violet;}
.stack{filter:saturate(50%) brightness(50%);}
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main.js
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import Game from "./Game.js";
const GAME = new Game();
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Game.js
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import Blocks from "./Blocks.js";
import Grid from "./Grid.js";
export default class Game{
#SCORE
constructor(){
this.GRID = new Grid(this);
this.BLOCK = new Blocks(this);
this.$btn = document.getElementById('btn-start');
this.$btn.addEventListener('click',this.on_click);
this.playing = false;
this.$score = document.getElementById('score');
this.score = 0;
this.addEvent();
}//constructor
/* [METHOD] */
on_click = (e) =>{
const dataGame = this.$btn.dataset.game;
if(dataGame == "playing"){
//멈추기
this.$btn.dataset.game = 'paused';
this.$btn.textContent = 'PLAY AGAIN';
this.playing = false;
this.BLOCK.stop();
}else{
this.$btn.dataset.game = 'playing';
this.$btn.textContent = 'PAUSE';
this.playing = true;
if(dataGame == "ready"){
//새 시작
this.reset_score();
this.GRID.reset();
this.BLOCK.reset();
this.BLOCK.newTet();
}else if(dataGame == "paused"){
//재개
this.BLOCK.moveDownCascading();
this.addEvent();
}
}//if else
};//on_click
reset_btn(){
this.$btn.dataset.game = 'ready';
this.$btn.textContent = 'GAME OVER';
}//reset_btn
is_lost(){
const cells = this.GRID.cell;
const curr = this.BLOCK.curr;
const currPos = this.BLOCK.currPos;
for(let idx of curr){
if(cells[idx + currPos].classList.contains('stack')){return true;}
}//for
return false;
}//is_lost
gameOver(){
if(!this.playing){return;}
this.playing = false;
this.BLOCK.stop();
this.reset_btn();
console.log('GAME OVER',new Date());
}//gameOver
addEvent(){
window.addEventListener('keydown', this.on_keydown,{once:true});
}//addEvent
on_keydown = async (e) => {
if(!this.playing){return;}
switch(e.key){
case "ArrowLeft":
await this.BLOCK.moveLeft();
break;
case "ArrowRight":
await this.BLOCK.moveRight();
break;
case "ArrowUp":
await this.BLOCK.rotate();
break;
case "ArrowDown":
this.BLOCK.moveDown();
break;
default :
this.addEvent();
return;
}//switch
//add Event Again...
this.addEvent();
}//on_keydown
/* SCORE */
get score(){return this.#SCORE;}
set score(value){this.#SCORE = value;}
reset_score(){
this.score = 0;
this.display_score();}
update_score(value){
this.score += value;
this.display_score();}
display_score(){this.$score.textContent = this.score;}
}//Game
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Grid.js
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export default class Grid{
#CELL;
#PREVIEW
constructor(GAME){
this.GAME = GAME;
this.$grid = document.getElementById('grid');
this.$mini = document.getElementById('miniGrid');
//자동 실행
this.draw_grid();
this.draw_mini();
}//constructor
reset(){
this.cell.forEach($cell => $cell.classList.remove('tet','stack','red','yellow','blue','green','purple'));
this.preview.forEach($cell => $cell.classList.remove('tet','red','yellow','blue','green','purple'));
}//reset
/* 메인 그리드 */
draw_grid(){
const $frag = document.createDocumentFragment();
const cell = [];
for(let i=0; i<210; i++){
const $gridCell = document.createElement('DIV');
$gridCell.classList.add('grid-cell');
$gridCell.dataset.number = i;
if(i >= 200){ $gridCell.classList.add('taken');}
$frag.appendChild($gridCell);
cell.push($gridCell);
}//for
this.$grid.appendChild($frag);
this.#CELL = cell;
}//draw_grid
/* 미리보기 */
draw_mini(){
const $frag = document.createDocumentFragment();
const preview = [];
for(let i=0; i<16; i++){
const $gridCell = document.createElement('DIV');
$gridCell.classList.add('grid-cell');
$frag.appendChild($gridCell);
preview.push($gridCell);
}//for
this.$mini.appendChild($frag);
this.#PREVIEW = preview;
}
/* [GETTER, SETTER] */
get cell(){return this.#CELL;}
set cell(value){this.#CELL = value;}
get preview(){return this.#PREVIEW;}
}//Grid
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Blocks.js
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/*
00 [01] [02] 03 04 05 06 07 08 09
10 [11] 12 13 14 15 16 17 18 19
20 [21] 22 23 24 25 26 27 28 29
*/
/*
00 [01] [02] 03 04
05 [06] 07 08 09
10 [11] 12 13 14
*/
//아님 https://www.youtube.com/watch?v=QDp8BZbwOqk&t=198s
//의 9:47이 더 좋아보이긴 한데 흠..
const width = 10;
const Ltet = [
[1, width+1, width*2+1, 2],
[width, width+1, width+2, width*2+2],
[1, width+1, width*2+1, width*2],
[width, width*2, width*2+1, width*2+2]];
const Ztet = [
[0,width,width+1,width*2+1],
[width+1, width+2,width*2,width*2+1],
[1,width,width+1,width*2],
[width, width+1,width*2+1,width*2+2]];
const Ttet = [
[1,width,width+1,width+2],
[1,width+1,width+2,width*2+1],
[width,width+1,width+2,width*2+1],
[1,width,width+1,width*2+1]];
const Otet = [
[0,1,width,width+1],
[0,1,width,width+1],
[0,1,width,width+1],
[0,1,width,width+1]];
const Itet = [
[1,width+1,width*2+1,width*3+1],
[width,width+1,width+2,width+3],
[1,width+1,width*2+1,width*3+1],
[width,width+1,width+2,width+3]];
/* CLASS */
export default class Blocks{
constructor(GAME){
this.GAME = GAME;
this.TETS = [Ltet,Ztet,Ttet,Otet,Itet];
this.COLOR = ["red","yellow","blue","green","purple"];
this.reset();
}//constructor
/* 리셋 */
reset(){
this.currPos = undefined;
this.currType = undefined;
this.currRot = 0;
this.colorIdx = -1;
this.currColor = undefined;
this.curr = undefined;
this.define_next();
this.timeId = undefined;
}//reset
/* 새 블록을 만듦 */
async newTet(){
this.stop();
this.currPos = 4;
this.currRot = 0;
this.currType = this.nextType;
this.currColor = this.nextColor;
this.curr = this.next;
this.define_next();
this.display_next();
this.moveDownCascading();
}//newTet;
define_next(){
this.nextColor = this.random_color();
this.nextType = this.random_type();
this.next = this.random_tet(this.nextType);
}//define_next
random_type(){
return Math.floor(this.TETS.length * Math.random());
}
random_tet(type){
return this.TETS[type][this.currRot];
}//random_tet
random_color(){
// this.colorIdx = Math.floor(this.COLOR.length * Math.random());
this.colorIdx = this.colorIdx >= this.COLOR.length - 1 ? -1 : this.colorIdx;
this.colorIdx++;
return this.COLOR[this.colorIdx];
};
draw(){
return new Promise(res=>{
setTimeout(()=>{
const CELL = this.GAME.GRID.cell;
this.curr.forEach(idx=>{
const curr_cell = CELL[this.currPos + idx];
curr_cell.classList.add('tet',this.currColor);
});
res();
},0);
});
}//draw
undraw(){
return new Promise(res=>{
setTimeout(()=>{
const CELL = this.GAME.GRID.cell;
this.curr.forEach(idx=>{
const curr_cell = CELL[this.currPos + idx];
curr_cell.classList.remove('tet',this.currColor);
});
res();
},0);
});
}//undraw
/* 자동으로 내려감 */
moveDownCascading = async()=>{
//플레이 안 되도록
if(!this.GAME.playing){
this.stop();
return;}
//패배 판정
if(this.GAME.is_lost()){
this.GAME.gameOver();
return;}
//내리고
await this.moveDown();
//바닥이나 블럭에 닿아 멈추는 경우
if(this.is_stop()){
//멈추고 쌓기
this.stop();
await this.stack();
//점수 업데이트 (개별)
this.GAME.update_score(this.curr.length);
//한줄 완성 확인
this.lineClear();
//새 블록 생성
this.newTet();
return;
}//else if
//반복
setTimeout(()=>{
this.timeId = window.requestAnimationFrame(this.moveDownCascading);
},500);
}//moveDownCascading;
/* 단순히 아래로 내리기 */
moveDown = async()=>{
await this.undraw();
this.currPos += width;
const CELL = this.GAME.GRID.cell;
const isStack = this.curr.some(idx=>CELL[this.currPos + idx].classList.contains('stack'));
const isTaken = this.curr.some(idx=>CELL[this.currPos + idx].classList.contains('taken'));
if(isStack || isTaken){
this.currPos -= 10;
await this.draw();
return;}
await this.draw();
}//moveDown
/* 왼쪽 */
moveLeft = async() =>{
if(this.isAtLeft()){return;}
await this.undraw();
this.currPos--;
const CELL = this.GAME.GRID.cell;
const isStack = this.curr.some(idx=>CELL[this.currPos + idx].classList.contains('stack'));
if(isStack){this.currPos++;}
await this.draw();
}//moveLeft;
/* 오른쪽 */
moveRight = async()=>{
if(this.isAtRight()){return;}
await this.undraw();
this.currPos++;
const CELL = this.GAME.GRID.cell;
const isStack = this.curr.some(idx=>CELL[this.currPos + idx].classList.contains('stack'));
if(isStack){this.currPos--;}
await this.draw();
}//moveRight
/* 벽에 닿는지 */
isAtLeft(){
return this.curr.some(idx =>(this.currPos + idx) % width === 0);}
isAtRight(){
return this.curr.some(idx =>(this.currPos + idx) % width === width - 1);}
/* 회전 */
async rotate(){
await this.undraw();
this.currRot = this.currRot + 1 > this.TETS[this.currType].length - 1 ? 0 : this.currRot + 1;
this.curr = this.TETS[this.currType][this.currRot];
this.checkRotatedPosition();
await this.draw();
}//rotate
/* 회전 가능 확인 및 위치 재조정 */
checkRotatedPosition(P){
P = P || this.currPos;
if((P+1) % width < 4){
if(this.isAtRight()){
this.currPos++;
this.checkRotatedPosition(P);}
}else if(P % width > 5){
if(this.isAtLeft()){
this.currPos--;
this.checkRotatedPosition(P);}
}//if else 4,5
}//checkRotatedPosition
/* 멈출 때인가 */
is_stop(){
const CELL = this.GAME.GRID.cell;
const isRowEnd = this.curr.some(idx => CELL[this.currPos + idx + width]?.classList.contains('taken'));
const isStack = this.curr.some(idx => CELL[this.currPos + idx + width]?.classList.contains('stack'));
if(isRowEnd || isStack){return true;}
return false;
}//is_stop
/* 쌓기 */
stack(){
return new Promise(res=>{
this.curr.forEach(idx=>{
this.GAME.GRID.cell[idx + this.currPos].classList.add('stack');
});
res();
});
}//stack
/* 타이머 종료 */
stop(){
while(this.timeId){
window.cancelAnimationFrame(this.timeId);
this.timeId--;
}//while
}//stop
/* 미리보기 표시 */
display_next(){
const PREVIEW = this.GAME.GRID.preview;
PREVIEW.forEach(cell=>cell.classList.remove('tet',this.currColor));
this.next.forEach(idx=>{
const q = Math.floor(idx / 10);
PREVIEW[idx - (q * 6)].classList.add('tet',this.nextColor);
});
}//display_next
/* 💥 한 줄 완성시 */
lineClear(){
for(let i=0; i<this.GAME.GRID.cell.length - width; i += width){
this.isClear(i);
for(let k=0; k<i; k+=width){
this.isClear(k);
}//for
}//for
}//lineClear
isClear(i){
const CELL = this.GAME.GRID.cell;
const row = this.getRow(i);
const isClear = row.every(idx=>CELL[idx].classList.contains('stack'));
if(isClear){
//점수 업데이트
this.GAME.update_score(width * 10);
//클래스 없애고
row.forEach(idx=>{
CELL[idx].classList.remove('tet', 'stack', 'red', 'yellow', 'blue', 'green', 'purple');
});
//삭제
this.removeLine(i);
}//if
}//isClear
removeLine(i){
const removed = this.GAME.GRID.cell.splice(i, width);
this.GAME.GRID.cell = removed.concat(this.GAME.GRID.cell);
this.GAME.GRID.cell.forEach($cell => this.GAME.GRID.$grid.appendChild($cell));
}//removeLine
getRow(i){
const row = [];
for(let k=0; k<width; k++){
row.push(i + k);
}//for
return row;
}//getRow
//1:26
}//class - Blocks
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