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janggi.html
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<html>
<head>
<title>장기</title>
<meta charset="utf-8" />
<meta name="viewport" content="width = device-width, initial-scale = 1" />
<style>
:root {
--cell-width: 90px;
--cell-height: calc(var(--cell-width) * 0.9)
}
* {
box-sizing: border-box;
}
body {
background: black;
box-sizing: border-box;
}
.center {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.board {
position:relative;
background: #723820;
width: calc(8 * var(--cell-width));
height: calc(9 * var(--cell-height));
display: flex;
box-sizing: content-box;
flex-flow: column wrap;
padding: calc(var(--cell-width) / 2);
}
.row {
display: flex;
}
.cell {
width: var(--cell-width);
height: var(--cell-height);
border: 1px solid black;
}
.unit {
position: absolute;
text-align: center;
overflow: hidden;
transition: 0.5s ease-in-out;
}
.unit > .inner {
transform: rotate(45deg);
background: white;
display: flex;
width: 100%;
height: 100%;
}
.unit > .inner {
background: white;
}
.unit > .inner > .text {
margin: auto;
font-family: '궁서';
font-weight: 700;
transform: rotate(-45deg);
}
.slash {
background: url('data:image/svg+xml;utf-8,<svg xmlns="http://www.w3.org/2000/svg"><line x1="0" y1="100%" x2="100%" y2="0" stroke="black" stroke-width="2"/></svg>');
}
.backslash {
background: url('data:image/svg+xml;utf-8,<svg xmlns="http://www.w3.org/2000/svg"><line x1="0" y1="0" x2="100%" y2="100%" stroke="black" stroke-width="2"/></svg>');
}
.path {
position: absolute;
background: rgba(0, 0, 0, 0.5);
border-radius: 30%;
}
.info {
font-size: 4rem;
z-index: 100;
text-align: center;
width: 50%;
padding: 1rem;
background: rgba(0, 0, 0, 0.4);
}
.red {
color: red;
}
.green {
color: green;
}
.hide {
display: none;
}
button.start {
width: 100%;
height: 100%;
font-size: 3rem;
background: white;
}
.switch {
position: absolute;
background: #723820;
border-radius: 5px;
text-align: center;
padding: 10px;
font-size: 1.5rem;
}
</style>
</head>
<body>
<div class="center">
<div class="board"></div>
</div>
<script>
// 유틸
Array.prototype.takeWhile = function(f) {
const res = [];
for (const v of this) {
const pred = f(v);
if (pred) res.push(v);
else return res;
if (pred === 'stop') return res;
}
return res
}
Array.prototype.skipWhile = function(f) {
const res = [...this];
for (const v of this) {
const pred = f(v);
if (pred) res.shift();
else return res;
if (pred === 'skipAll') return []
if (pred === 'stop') return res;
}
return res;
}
const range = function (n, m) {
if (arguments.length === 1)
return Array.from({ length: n }).map((_, i) => i);
if (arguments.length === 2) {
if (n === m) return [n]
else if (n < m) {
return Array.from({ length: m - n + 1 }).map((_, i) => i + n);
} else {
return Array.from({ length: n - m + 1 }).map((_, i) => m - i + (n - m));
}
}
}
const zip = (arr1, arr2) => {
const length = Math.min(arr1.length, arr2.length)
return Array.from({ length }).map((_, i) => [arr1[i], arr2[i]])
}
const isSame = ([x1, y1]) => ([x2, y2]) => x1 === x2 && y1 === y2;
const isIn = (positions) => ([x, y]) =>
positions.find(([_x, _y]) => x === _x && y === _y)
const min = Math.min
const max = Math.max
</script>
<script>
const board = document.querySelector('.board')
const haveCrossline = (x, y) => {
const index = y * 8 + x;
return [3, 12, 59, 68].includes(index) ? 'backslash' :
[4, 11, 60, 67].includes(index) ? 'slash' : ''
}
board.innerHTML = range(9).map(
y =>
`<div class="row">
${range(8).map(x => `<div class="cell ${haveCrossline(x, y)}"></div>`).join('')}
</div>`
).join('')
const isInBoard = ([x, y]) => 0 <= x && x < 9 && 0 <= y && y < 10;
const cellWidth = getComputedStyle(document.documentElement).getPropertyValue("--cell-width").match(/\d+/)[0] * 1;
const cellHeight = cellWidth * 0.9
const sizer = (text) => {
switch (text) {
case '楚':
case '漢':
return cellWidth;
case '車':
case '馬':
case '象':
case '車':
case '包':
return cellWidth * 0.8;
case '兵':
case '卒':
case '士':
case 'path':
return cellWidth * 0.6;
default: return cellWidth;
}
}
const table = range(10).map(() => range(9).map(() => 0))
const redCatch = []
const greenCatch = []
const gameStatus = {
selectedUnit: null,
started: false,
}
class Unit {
constructor(text, x, y) {
this.text = text
this.x = x
this.y = y
this.size = sizer(text)
this.team = y > 4 ? 'green' : 'red'
this.node = document.createElement('div')
this.node.style= `
width: ${this.size}px;
height: ${this.size}px;
left: ${this.left}px;
top: ${this.top}px;
font-size: ${this.size / 30}rem;
color: ${this.team};
`
this.node.classList.add('unit', text)
this.node.innerHTML = `<span class="inner"><span class="text">${text}</span></span>`
this.node.addEventListener('click', (e) => this.onClick(e))
board.appendChild(this.node)
table[this.y][this.x] = this
}
get left() { return this.x * cellWidth + (cellWidth - this.size) / 2 }
get top() { return this.y * cellHeight + (cellHeight - this.size) / 2 }
get pos() { return [this.x, this.y] }
posIs([x, y]) {
return this.x === x && this.y === y
}
calcPath () {
const canForward = ([x, y]) => !table[y][x] || (table[y][x].team !== this.team && 'stop');
const isEmptyPlace = ([x, y]) => !table[y][x];
const isEnemy = ([x, y]) => table[y][x] && table[y][x].team !== this.team;
const isEmptyOrEnemy = path => isEmptyPlace(path) || isEnemy(path);
const toAbsoultePos = ([x, y]) => [this.x + x, this.y + y];
if (this.text === '兵') {
const paths = [
[[-1, 0], [1, 0], [0, 1]].map(toAbsoultePos).filter(isInBoard).filter(canForward),
isIn([[3, 7], [5, 7]])(this.pos) ? [[4, 8]].filter(canForward) : [],
this.posIs([4, 8]) ? [[3, 9], [5, 9]].filter(canForward) : [],
].flat()
return paths
}
if (this.text === '卒') {
const paths = [
[[-1, 0], [1, 0], [0, -1]].map(toAbsoultePos).filter(isInBoard).filter(canForward),
isIn([[3, 2], [5, 2]])(this.pos) ? [[4, 1]].filter(canForward) : [],
this.posIs([4, 1]) ? [[3, 0], [5, 0]].filter(canForward) : [],
].flat()
return paths
}
else if (this.text === '漢' || this.text === '楚' || this.text === '士') {
const isInPalace = this.team === 'red' ?
([x, y]) => 3 <= x && x <= 5 && 0 <= y && y <= 2 :
([x, y]) => 3 <= x && x <= 5 && 7 <= y && y <= 9;
const isPalaceSideMiddle = this.team === 'red' ?
([x, y]) => (y === 1 && (x === 3 || x === 5)) || (x === 4 && (y === 0 || y === 2)) :
([x, y]) => (y === 8 && (x === 3 || x === 5)) || (x === 4 && (y === 7 || y === 9))
const paths = [[-1, -1], [-1, 0], [-1, 1], [0, -1], [0, 1], [1, -1], [1, 0], [1, 1]]
.map(toAbsoultePos)
.filter(isInPalace)
.filter(([x, y]) => !isPalaceSideMiddle(this.pos) || !isPalaceSideMiddle([x, y]))
.filter(canForward)
return paths
}
else if (this.text === '車') {
const paths = [
range(this.x - 1, 0).map(x => [x, this.y]).filter(isInBoard).takeWhile(canForward),
range(this.x + 1, 8).map(x => [x, this.y]).filter(isInBoard).takeWhile(canForward),
range(this.y - 1, 0).map(y => [this.x, y]).filter(isInBoard).takeWhile(canForward),
range(this.y + 1, 9).map(y => [this.x, y]).filter(isInBoard).takeWhile(canForward),
this.posIs([3, 7]) ? [[4, 8], [5, 9]].takeWhile(canForward) : [],
this.posIs([3, 9]) ? [[4, 8], [5, 7]].takeWhile(canForward) : [],
this.posIs([5, 7]) ? [[4, 8], [3, 9]].takeWhile(canForward) : [],
this.posIs([5, 9]) ? [[4, 8], [3, 7]].takeWhile(canForward) : [],
this.posIs([4, 8]) ? [[3, 7], [3, 9], [5, 7], [5, 9]].filter(canForward) : [],
this.posIs([3, 0]) ? [[4, 1], [5, 2]].takeWhile(canForward) : [],
this.posIs([3, 2]) ? [[4, 1], [5, 0]].takeWhile(canForward) : [],
this.posIs([5, 0]) ? [[4, 1], [3, 2]].takeWhile(canForward) : [],
this.posIs([5, 2]) ? [[4, 1], [3, 0]].takeWhile(canForward) : [],
this.posIs([4, 1]) ? [[3, 0], [3, 2], [5, 0], [5, 2]].filter(canForward) : [],
].flat()
return paths
}
else if (this.text === "包") {
const calcPoPath = pathList => pathList
.filter(isInBoard)
.skipWhile(([x, y]) => !table[y][x] || (table[y][x] && table[y][x].text === '包' && 'skipAll'))
.slice(1)
.takeWhile(([x, y]) => !table[y][x] || table[y][x].text !== '包' && (table[y][x].team !== this.team && 'stop'));
const paths = [
calcPoPath(range(this.y - 1, 0).map(y => [this.x, y])),
calcPoPath(range(this.y + 1, 9).map(y => [this.x, y])),
calcPoPath(range(this.x - 1, 0).map(x => [x, this.y])),
calcPoPath(range(this.x + 1, 8).map(x => [x, this.y])),
this.posIs([3, 7]) ? calcPoPath([[4, 8], [5, 9]]) : [],
this.posIs([3, 9]) ? calcPoPath([[4, 8], [5, 7]]) : [],
this.posIs([5, 7]) ? calcPoPath([[4, 8], [3, 9]]) : [],
this.posIs([5, 9]) ? calcPoPath([[4, 8], [3, 7]]) : [],
this.posIs([3, 0]) ? calcPoPath([[4, 1], [5, 2]]) : [],
this.posIs([3, 2]) ? calcPoPath([[4, 1], [5, 0]]) : [],
this.posIs([5, 0]) ? calcPoPath([[4, 1], [3, 2]]) : [],
this.posIs([5, 2]) ? calcPoPath([[4, 1], [3, 0]]) : [],
].flat()
return paths
}
else if (this.text === '馬') {
const paths = [[0, -1], [-1, 0], [0, 1], [1, 0]]
.flatMap(p => [[p, p.map(i => i || -1)], [p, p.map(i => i || 1)]])
.map(([[x1, y1], [x2, y2]]) => [[x1, y1], [x1 + x2, y1 + y2]])
.map(ps => ps.map(toAbsoultePos))
.filter(ps => ps.every(isInBoard))
.filter(([[x1, y1], [x2, y2]]) => isEmptyPlace([x1, y1]) && isEmptyOrEnemy([x2, y2]))
.map(i => i[1])
return paths
}
else if (this.text === '象') {
const paths = [[0, -1], [-1, 0], [0, 1], [1, 0]]
.flatMap(p => [[p, p.map(i => i || -1), p.map(i => i || -1)], [p, p.map(i => i || 1), p.map(i => i || 1)]])
.map(([[x1, y1], [x2, y2], [x3, y3]]) => [[x1, y1], [x1 + x2, y1 + y2], [x1 + x2 + x3, y1 + y2 + y3]])
.map(ps => ps.map(toAbsoultePos))
.filter(ps => ps.every(isInBoard))
.filter(([[x1, y1], [x2, y2], [x3, y3]]) =>
isEmptyPlace([x1, y1]) && isEmptyPlace([x2, y2]) && isEmptyOrEnemy([x3, y3])
)
.map(i => i[2])
return paths
}
return []
}
showPath() {
const paths = this.calcPath();
const onPathClick = pos => this.moveTo(pos);
this.path = new Path(paths, onPathClick);
}
onClick() {
if (!isInBoard(this.pos)) return;
gameStatus.selectedUnit && gameStatus.selectedUnit.cancelMove();
gameStatus.selectedUnit = this;
this.showPath()
}
cancelMove() {
this.path && this.path.destory();
this.path = null;
gameStatus.selectedUnit = null;
}
move([x, y]) {
this.moveTo([this.x + x, this.y + y])
}
moveTo([x, y]) {
// 기존 자리는 비우기
table[this.y][this.x] = null;
this.x = x;
this.y = y;
this.node.style.top = this.top
this.node.style.left = this.left
// 새 자리에 말이 있으면 지우기
if (table[y][x]) table[y][x].caught()
// 새 자리 차지
table[y][x] = this;
}
caught() {
table[this.y][this.x] = null;
const prison = this.team === 'green' ? redCatch : greenCatch;
this.x = (prison.map(u => u.size).reduce((acc, v) => acc + v + 10, 0) ) / cellWidth;
this.y = this.team === 'green' ? -1.2 : 10.2;
prison.push(this);
setTimeout(() => {
this.node.style.top = this.top
this.node.style.left = this.left
}, 300)
}
}
class Path {
constructor(paths, onClick) {
this.size = sizer('path')
this.nodes = []
for (const [x, y] of paths) {
const pathNode = document.createElement('div')
pathNode.style= `
width: ${this.size}px;
height: ${this.size}px;
left: ${x * cellWidth + (cellWidth - this.size) / 2}px;
top: ${y * cellHeight + (cellHeight - this.size) / 2}px;
font-size: ${this.size / 30}rem;
color: ${this.team};
`
pathNode.classList.add('path');
pathNode.addEventListener('click', () => {
onClick([x, y])
checkGameState()
this.destory()
})
this.nodes.push(pathNode)
}
board.append(...this.nodes);
}
destory() {
this.nodes.forEach(n => n.remove());
this.nodes = [];
}
}
class DevTool {
constructor() {
this.size = 30
range(10).map(y => range(9).map(x => {
const node = document.createElement('div')
node.style= `
position: absolute;
width: ${this.size}px;
height: ${this.size}px;
left: ${x * cellWidth + (cellWidth - this.size) / 2}px;
top: ${y * cellHeight + (cellHeight - this.size) / 2}px;
z-index: 10;
background: rgba(0, 0, 0, 0.25);
color: grey;
`
node.innerText = `${x}, ${y}`
board.appendChild(node)
}))
}
}
// new DevTool()
const redKing = new Unit('漢', 4, 1);
const greenKing = new Unit('楚', 4, 8);
const units = [
redKing,
new Unit('士', 3, 0),
new Unit('士', 5, 0),
new Unit('兵', 0, 3),
new Unit('兵', 2, 3),
new Unit('兵', 4, 3),
new Unit('兵', 6, 3),
new Unit('兵', 8, 3),
new Unit('車', 0, 0),
new Unit('車', 8, 0),
new Unit('馬', 1, 0),
new Unit('馬', 7, 0),
new Unit('象', 2, 0),
new Unit('象', 6, 0),
new Unit('包', 7, 2),
new Unit('包', 1, 2),
greenKing,
new Unit('士', 3, 9),
new Unit('士', 5, 9),
new Unit('卒', 0, 6),
new Unit('卒', 2, 6),
new Unit('卒', 4, 6),
new Unit('卒', 6, 6),
new Unit('卒', 8, 6),
new Unit('車', 0, 9),
new Unit('車', 8, 9),
new Unit('馬', 1, 9),
new Unit('馬', 7, 9),
new Unit('象', 2, 9),
new Unit('象', 6, 9),
new Unit('包', 7, 7),
new Unit('包', 1, 7),
]
class UI {
constructor() {
this.info = document.createElement('div');
this.info.classList.add('center', 'hide', 'info');
board.appendChild(this.info);
this.timer = null;
}
win(team) {
this.beforeShow();
this.info.classList.add(team);
this.info.innerText = `${team === 'red' ? '한' : '초'}나라 승리`;
}
redWin() {
this.win('red')
}
greenWin() {
this.win('green');
}
async canCatchGreenKing() {
this.beforeShow();
this.info.classList.add('win', 'red');
this.info.innerText = '장군';
this.resetAfter(3000);
}
async canCatchRedKing() {
this.beforeShow();
this.info.classList.add('win', 'green');
this.info.innerText = '장군';
this.resetAfter(3000);
}
beforeShow() {
clearTimeout(this.timer);
this.info.classList.remove('hide');
}
reset() {
this.info.classList.add('hide');
this.info.classList.remove('green', 'red');
this.info.innerHTML = '';
}
resetAfter(n) {
this.timer = setTimeout(() => this.reset(), n);
}
}
class Setting {
constructor() {
const switchSize = 100;
const switchPositions = [[1.5, -0.5], [6.5, -0.5], [1.5, 10], [6.5, 10]];
const unitBasePos = [[0, 1], [0, 6], [9, 1], [9, 6]];
this.masangSwitchs = switchPositions.map(([x, y], i) => {
const node = document.createElement('button');
node.classList.add('switch');
node.innerText = '전환'
node.style = `
width: ${switchSize}px;
left: ${x * cellWidth + (cellWidth - switchSize) / 2}px;
top: ${y * cellHeight + (cellHeight - switchSize) / 2}px;
`
node.addEventListener('click', (e) => {
const [y, x] = unitBasePos[i];
const left = table[y][x];
const right = table[y][x + 1];
left.move([0, y < 5 ? 1 : -1])
right.move([-1, 0])
left.move([1, y < 5 ? -1 : 1])
})
return node;
})
board.append(...this.masangSwitchs);
}
destoryMasangSwitch() {
if (!this.masangSwitchs) return;
this.masangSwitchs.forEach(i => i.remove());
this.masangSwitchs = null;
}
}
const ui = new UI();
const settings = new Setting();
function checkGameState() {
if (!gameStatus.started) {
gameStatus.started = true;
settings.destoryMasangSwitch();
}
if (!isInBoard(greenKing.pos)) {
return ui.redWin();
}
if (!isInBoard(redKing.pos)) {
return ui.greenWin();
}
const canCatchGreenKing = !!units
.filter(u => u.team === 'red' && isInBoard(u.pos))
.flatMap(u => u.calcPath())
.find(path => greenKing.posIs(path))
if (canCatchGreenKing) {
return ui.canCatchGreenKing();
}
const canCatchRedKing = !!units
.filter(u => u.team === 'green' && isInBoard(u.pos))
.flatMap(u => u.calcPath())
.find(path => redKing.posIs(path))
if (canCatchRedKing) {
return ui.canCatchRedKing();
}
}
const delay = n => new Promise(r => setTimeout(r, n));
const show = async () => {
for (const unit of units) {
unit.node.click();
await delay(100);
}
}
const randomPlay = async () => {
while (!redCatch.find(u => u.text === '楚' || u.text === '漢')) {
const chooseRed = Math.floor(Math.random() * units.length / 2);
const chooseBlue = Math.floor(Math.random() * units.length / 2) + 16;
units[chooseRed].node.click();
const hasRedPath = units[chooseRed].path && units[chooseRed].path.nodes.length
units[chooseBlue].node.click();
const hasBluePath = units[chooseBlue].path && units[chooseBlue].path.nodes.length
if (!hasRedPath || !hasBluePath) {
continue
}
units[chooseRed].node.click();
units[chooseRed].path.nodes[Math.floor(Math.random() * units[chooseRed].path.nodes.length)].click();
await delay(300);
units[chooseBlue].node.click();
units[chooseBlue].path.nodes[Math.floor(Math.random() * units[chooseBlue].path.nodes.length)].click();
await delay(300);
}
}
// randomPlay()
</script>
</body>
</html>