mirror of
https://github.com/osmarks/random-stuff
synced 2024-12-27 10:30:35 +00:00
249 lines
8.9 KiB
HTML
249 lines
8.9 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
<title>Tic-Tac-Toe</title>
|
|
<style>
|
|
.row {
|
|
width: fit-content;
|
|
height: 4em;
|
|
}
|
|
.layer {
|
|
margin: 1em;
|
|
width: fit-content;
|
|
border: 1px solid black;
|
|
display: inline-block;
|
|
}
|
|
.cell {
|
|
width: 4em;
|
|
height: 4em;
|
|
display: inline-block;
|
|
border: 1px solid gray;
|
|
}
|
|
.cell-1 {
|
|
background: blue;
|
|
}
|
|
.cell-2 {
|
|
background: red;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div id="screen"></div>
|
|
<div id="controls"><button id="rotate">Rotate View</button></div>
|
|
<div id="info"></div>
|
|
<script id="game-logic">
|
|
var size = 4
|
|
var gsize = size ** 3
|
|
var grid = new Uint8Array(gsize)
|
|
var range = Array(size).fill(null).map((_, index) => index)
|
|
|
|
function packCoord([l, r, c]) {
|
|
return l + r * size + c * size * size
|
|
}
|
|
|
|
function cartesianProduct(xss) {
|
|
var prods = [[]]
|
|
for (const xs of xss) {
|
|
prods = xs.flatMap(x => prods.map(p => p.concat([x])))
|
|
}
|
|
return prods
|
|
}
|
|
function rotateArray(xs, by) {
|
|
return xs.slice(by).concat(xs.slice(0, by))
|
|
}
|
|
function zip(xs, ys) {
|
|
return xs.map((x, i) => [x, ys[i]])
|
|
}
|
|
var inPlaneDiagonals = cartesianProduct([[zip(range, range), zip(range, range.map(x => x).reverse())], range]).map(([diag, a]) => diag.map(([b, c]) => [a, b, c]))
|
|
var throughLayerLines = cartesianProduct([range, range]).map(withinLayerPosition => range.map(i => withinLayerPosition.concat([i]))).concat(inPlaneDiagonals)
|
|
var winConditions = throughLayerLines.concat(throughLayerLines.map(l => l.map(c => rotateArray(c, 1))), throughLayerLines.map(l => l.map(c => rotateArray(c, 2))))
|
|
|
|
function insertDiagonalFrom(row, cell) {
|
|
var diagonal = []
|
|
var dirR = row == 0 ? 1 : -1
|
|
var dirC = cell == 0 ? 1 : -1
|
|
for (var layer = 0; layer < size; layer++) {
|
|
diagonal.push([layer, row, cell])
|
|
row += dirR
|
|
cell += dirC
|
|
}
|
|
winConditions.push(diagonal)
|
|
}
|
|
insertDiagonalFrom(0, 0)
|
|
insertDiagonalFrom(0, size - 1)
|
|
insertDiagonalFrom(size - 1, 0)
|
|
insertDiagonalFrom(size - 1, size - 1)
|
|
winConditions = winConditions.map(w => w.map(packCoord))
|
|
|
|
function containsWin(grid, real) {
|
|
outer: for (var winCondition of winConditions) {
|
|
var fst = grid[winCondition[0]]
|
|
for (var i = 1; i < winCondition.length; i++) {
|
|
var val = grid[winCondition[i]]
|
|
if (val != fst || val == 0) {
|
|
continue outer
|
|
}
|
|
}
|
|
return fst
|
|
}
|
|
}
|
|
|
|
function unfilledLineLocation(grid, player) {
|
|
outer: for (var winCondition of winConditions) {
|
|
var count = 0
|
|
var last = null
|
|
for (var i = 0; i < winCondition.length; i++) {
|
|
if (grid[winCondition[i]] === player) {
|
|
count++
|
|
} else if (grid[winCondition[i]] == 0) {
|
|
last = winCondition[i]
|
|
} else {
|
|
continue outer
|
|
}
|
|
}
|
|
if (count == size - 1) { return last }
|
|
}
|
|
}
|
|
|
|
function possibleMoves(grid) {
|
|
var out = []
|
|
for (var i = 0; i < gsize; i++) {
|
|
if (!grid[i]) {
|
|
out.push(i)
|
|
}
|
|
}
|
|
return out
|
|
}
|
|
|
|
function set(grid, cell, val) {
|
|
var out = new Uint8Array(grid.length)
|
|
out.set(grid)
|
|
out[cell] = val
|
|
return out
|
|
}
|
|
|
|
function otherPlayer(p) {
|
|
return 3 - p
|
|
}
|
|
|
|
function randomPick(xs) {
|
|
return xs[Math.floor(xs.length * Math.random())]
|
|
}
|
|
|
|
function runRandomGame(grid, player) {
|
|
var targetPlayer = player
|
|
while (true) {
|
|
var moves = possibleMoves(grid)
|
|
if (moves.length === 0) {
|
|
return 0
|
|
}
|
|
grid = set(grid, randomPick(moves), player)
|
|
var winner = containsWin(grid)
|
|
if (winner === targetPlayer) {
|
|
return 1
|
|
} else if (winner === otherPlayer(targetPlayer)) {
|
|
return -1
|
|
}
|
|
player = otherPlayer(player)
|
|
}
|
|
}
|
|
|
|
function scoreGrid(grid, player) {
|
|
let score = 0
|
|
for (let i = 0; i < 100; i++) {
|
|
score += runRandomGame(grid, player)
|
|
}
|
|
return score
|
|
}
|
|
|
|
function findBestMove(grid, player) {
|
|
var nextLoc = unfilledLineLocation(grid, player)
|
|
if (nextLoc != null) { return nextLoc }
|
|
nextLoc = unfilledLineLocation(grid, otherPlayer(player))
|
|
if (nextLoc != null) { return nextLoc }
|
|
|
|
var bestscore = -Infinity
|
|
var best = null
|
|
var moves = possibleMoves(grid)
|
|
for (const p of moves) {
|
|
var optn = scoreGrid(set(grid, p, player), player)
|
|
if (optn > bestscore) {
|
|
bestscore = optn
|
|
best = p
|
|
}
|
|
}
|
|
return best
|
|
}
|
|
</script>
|
|
<script>
|
|
var workerGlue = `
|
|
onmessage = event => {
|
|
postMessage(findBestMove(...event.data))
|
|
}
|
|
`
|
|
var worker = new Worker(`data:application/javascript;base64,${btoa(document.getElementById("game-logic").innerHTML + workerGlue)}`)
|
|
var screen = document.getElementById("screen")
|
|
var info = document.getElementById("info")
|
|
var rotation = 0
|
|
document.getElementById("rotate").onclick = () => {
|
|
rotation += 1
|
|
rotation %= 3
|
|
render()
|
|
}
|
|
var currentPlayer = 1
|
|
|
|
function render() {
|
|
var html = ""
|
|
for (var l = 0; l < size; l++) {
|
|
html += '<div class="layer">'
|
|
for (var r = 0; r < size; r++) {
|
|
html += '<div class="row">'
|
|
for (var c = 0; c < size; c++) {
|
|
var coord = packCoord(rotateArray([l, r, c], rotation))
|
|
html += `<div class="cell cell-${grid[coord]}" id="cell-${coord}"></div>`
|
|
}
|
|
html += '</div>'
|
|
}
|
|
html += '</div>'
|
|
}
|
|
screen.innerHTML = html
|
|
info.innerHTML = `Player ${currentPlayer}'s turn`
|
|
}
|
|
|
|
function reset() {
|
|
grid = new Uint8Array(gsize)
|
|
currentPlayer = 1
|
|
render()
|
|
}
|
|
|
|
function onTurn(move) {
|
|
grid[move] = currentPlayer
|
|
currentPlayer = otherPlayer(currentPlayer)
|
|
render()
|
|
var winner = containsWin(grid)
|
|
if (winner != null) {
|
|
alert(`${winner} wins!`)
|
|
reset()
|
|
return true
|
|
}
|
|
}
|
|
|
|
worker.onmessage = event => {
|
|
onTurn(event.data)
|
|
}
|
|
|
|
window.onclick = event => {
|
|
if (currentPlayer != 1) { return }
|
|
var [start, coord] = event.target.id.split("-")
|
|
coord = parseInt(coord)
|
|
if (isNaN(coord) || typeof coord != "number" || start != "cell") { return }
|
|
if (grid[coord]) { return }
|
|
if (!onTurn(coord)) {
|
|
worker.postMessage([grid, currentPlayer])
|
|
}
|
|
}
|
|
render()
|
|
</script>
|
|
</body>
|
|
</html> |