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<!DOCTYPE html>
<html>
<head>
<title>Tron</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="shortcut icon" type="image/x-icon" href="data:image/x-icon;base64,AAABAAEAEBAQAAEABAAoAQAAFgAAACgAAAAQAAAAIAAAAAEABAAAAAAAgAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAx42QAFP/FABXQkMAQC0uAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAQBEREREREREAFEREREREQQAURERERERBABREREREREEAFEREREREQQAURERERERBABQERAAEREEAFCBEIiREQQAUQgRERERBABRAJEREREEAFAJEREREQQAUJERERERBABRERERERDEAEREREREREQQAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA">
<style>
body {
background: #13191a;
display: grid;
grid-template-columns: 1fr 300px 300px 1fr;
font-family: monospace;
color: #7cecff;
margin: 0;
padding: 0;
}
h1 { letter-spacing: 6px }
h2 {
margin-bottom: 6px;
text-overflow: ellipsis;
max-width: calc(50vw - 300px);
}
h2:after {
display: block;
content: ' ';
margin-top: 12px;
height: 3px;
}
h2 b {
display: block;
overflow: hidden;
text-overflow: ellipsis;
}
#player-0 h2:after {
background-image: linear-gradient(to left, #0000, currentColor 18px, #0000);
margin-right: -10px;
}
#player-1 h2:after {
margin-left: -10px;
background-image: linear-gradient(to right, #0000, currentColor 18px, #0000);
}
canvas {
display: block;
width: 600px;
height: 600px;
grid-column: 2/4;
box-shadow: 0 0 20px 1px #7cecff42;
outline: 1px solid;
outline-offset: -1px;
}
button {
border: 1px solid;
color: currentColor;
background: transparent;
padding: 0 2px;
border-radius: 3px;
}
svg {
margin-top: 36px;
width: 300px;
}
#notice {
display: flex;
justify-content: space-between;
padding: 2px 0;
user-select: none;
}
.hide {
visibility: hidden;
pointer-events: none;
}
#title {
display: block;
margin: 0;
padding: 0;
grid-column: 2/4;
text-align: center;
color: cyan;
}
#player-0, #player-1 {
margin: 12px;
padding: 6px;
user-select: none;
}
#player-0 {
grid-column: 1;
text-align: right;
}
#player-1 { grid-column: 4 }
#controls {
grid-column: 2/4;
height: 10px;
background: #7cecff20;
margin-top: 1px;
}
#bar {
overflow: hidden;
position: relative;
box-shadow: 0 0 20px 1px #7cecff30;
outline: 1px solid;
outline-offset: -1px;
}
#loading { background: #7cecff40 }
#position { background: #7cecff }
#loading, #position {
position: absolute;
transform: translate(-600px);
pointer-events: none;
}
#bar, #loading, #position {
height: 100%;
width: 100%;
}
@media (orientation: portrait) {
h2 { max-width: 300px }
#controls { grid-row: 3 }
#player-0 { grid-column: 2; grid-row: 4 }
#player-1 { grid-column: 3; grid-row: 4 }
}
</style>
</head>
<body>
<div id="title">
<svg fill="cyan" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 449.9 184.1">
<defs><filter id="g"><feDropShadow dx="0" dy="0" stdDeviation="3" flood-color="cyan"/></filter></defs>
<path style="filter:url(#g)" d="M36 62.6H5.2v-19H36v19zM38.4 39H3l-3 2.8v23l3 2.5h35.4l3.1-2.7V41.7L38.4 39z"/><g clip-path="url(#clipPath4354)" transform="matrix(1.25 0 0 -1.25 -135 647)"><path style="filter:url(#g)" d="M333.3 426.4a18.9 18.9 0 00-19.1 18.5c0 10.3 8.6 18.6 19.1 18.6a18.9 18.9 0 0019.2-19.2c-.4-10-8.8-18-19.2-18m0 41.2c-12.8 0-23.2-10.1-23.2-22.6a22.9 22.9 0 0123.2-22.5c12.9 0 23.2 10 23.2 22.5a22.9 22.9 0 01-23.2 22.6"/><path style="filter:url(#g)" d="M333.3 406.6c-21.8 0-39.4 17.2-39.4 38.3s17.6 38.3 39.4 38.3c21.8 0 39.5-17.1 39.5-38.3s-17.7-38.3-39.5-38.3m0 80.6a42.9 42.9 0 01-43.4-42.9c.3-23 19.6-41.6 43.4-41.6a42.9 42.9 0 0143.5 42.2 42.9 42.9 0 01-43.5 42.3M463.7 407H457l-28.4 31.8v9.5H448v34.5h15.6V407zm1.5 79.5H447l-2.7-3.2v-31.5h-17.1c-2.2 0-2.2-1.2-2.2-2.1v-12.2l30.4-34.4h9.8l2.6 2.4v78.1l-2.6 3zM419.2 441.1h-19.6v-33.9h-15.7v75.6h6.9l28.4-32.1V441zm-26.9 45.3h-9.8l-2.6-2.5v-78.1l2.6-2.7h18.2l2.7 3v31.6h17.1c2.2 0 2.2 1.1 2.2 2V452l-30.4 34.5zM283.2 407h-18.8l-31.8 32.5v13.1h52a22.5 22.5 0 00-22-15.5h-9.2l29.8-30m-20 26.2c13.8.3 24.6 9.7 26.2 23h-58l-2.7-2.6V439c0-.5 0-1 .4-1.5l33.4-34.3h26.3v4.1l-26.2 26h.6zM220.2 407h-15.7v45.6h15.7V407zm1.3 49.4h-18.7l-2.5-2.7v-48l2.7-2.6h18.6l2.6 3v47.6l-2.7 2.7z"/><path style="filter:url(#g)" d="M172.5 467.4c-3.7 0-6.8-3.1-6.8-6.8v-53.5l-15.6-.1v54.8a20.7 20.7 0 0021.2 20.8h91.2a23 23 0 0022-15.2h-112zm90 19.1h-91.1a24.6 24.6 0 01-25.6-25v-55.9l3-2.4h18.5l2.4 2.9v54.4a3 3 0 003.2 3h116.4a27 27 0 01-26.7 23"/></g></svg></div>
<div id="player-0">
<h2><b>AI-0</b></h2>
<b>LOADING</b>
<br>
<b>0</b>
</div>
<canvas width="1200" height="1200"></canvas>
<div id="player-1">
<h2><b>AI-1</b></h2>
<b>LOADING</b>
<br>
<b>0</b>
</div>
<div id="controls">
<div id="bar">
<div id="loading"></div>
<div id="position"></div>
</div>
<div id="notice" class="hide">
> scroll or keys to move step by step, click to jump. (shift = fast)
<button>hide</button>
</div>
</div>
<script type="module">
import { move, update, colorize } from './lib/display.js'
import { init, injectedCode } from './lib/state.js'
const [canvas] = document.getElementsByTagName('canvas')
const [hide] = document.getElementsByTagName('button')
const bar = document.getElementById('bar')
const loading = document.getElementById('loading')
const position = document.getElementById('position')
hide.onclick = () => {
hide.parentElement.classList.add('hide')
localStorage.hide = 1
}
localStorage.hide || hide.parentElement.classList.remove('hide')
const buildInfo = (player, i) => {
const elem = document.getElementById(`player-${i}`)
if (!elem) return { score: () => {}, status: () => {} }
const [name, status, score] = [...elem.children].map(e => e.firstChild).filter(Boolean)
name.firstChild.data = player.name
elem.style.color = `hsl(${player.hue*360}, 100%, 70%)`
elem.style.textShadow = `0 0 6px hsla(${player.hue*360}, 100%, 70%, 0.4)`
elem.style.width = 'calc(100% - 36px)' // force width force redraw
// this fix a bug on chrome, not re-applying `currentColor` to gradients
return {
score: text => player.dead || (score.data = text),
status: text => status.data = text,
}
}
const notInBounds = n => n >= 100 || n < 0
const getShaUrl = login =>
`https://api.github.com/repos/${login}/tron/commits/master`
const getAIUrl = (login, sha, ai) =>
`https://rawcdn.githack.com/${login}/tron/${sha}/ai/${ai || login}.js`
const getSha = async login => (await (await fetch(getShaUrl(login))).json()).sha
const toBlob = async r =>
new Blob([`${await r.text()}${injectedCode}`], { type : 'text/javascript' })
const toUrlObject = b => URL.createObjectURL(b, { type: 'text/javascript' })
const memo = {}
const fetchBlob = url => memo[url]
|| (memo[url] = fetch(url).then(toBlob).then(toUrlObject))
const getGithackUrl = async (login, sha) => {
if (!sha || sha === 'master') {
sha = localStorage[login] || (localStorage[login] = await getSha(login))
}
return getAIUrl(login, sha)
}
const remoteURL = (login, sha) => location.host.startsWith('git.')
? `${location.origin}/${login}/tron/raw/branch/${sha || 'master'}/ai.js`
: getGithackUrl(login, sha)
const formatURL = url => {
if (url.startsWith('/')) return `${location.pathname}/ai/${url}`
if (url.startsWith('https://')) return url
if (url.includes(location.hostname)) return `https://${url}`
return url.includes('@')
? remoteURL(...url.split('@'))
: `${location.origin}/${url}`
}
const start = async ({ urls, seed }) => {
if (urls.length < 2) throw Error('2 AI urls are required to play')
const players = init({ players: urls, seed })
let turn = 1, maxTurn = 1, t = 1, cap = 10000, down
const done = new Set(players)
const setPosition = e => {
const v = typeof e === 'number'
? Math.max(e, 1)
: Math.floor(Math.max(e.pageX - bar.offsetLeft, 1) / 600 * cap)
t = Math.min(v, maxTurn)
requested || (requested = requestAnimationFrame(refresh))
}
window.onkeydown = e => {
const step = e.shiftKey ? 10 : 1
switch (e.key) {
case 'ArrowLeft': case 'a': case 'q': case 'l': return setPosition(t - step)
case 'ArrowRight': case 'e': case 'd': case 'k': return setPosition(t + step)
}
}
window.onmousemove = (e) => e.which ? (down && setPosition(e)) : (down = false)
bar.onmousedown = (e) => (down = true) && setPosition(e)
bar.onwheel = canvas.onwheel = (e) =>
setPosition(t + Math.sign(e.deltaY) * (e.shiftKey ? 10 : 1))
let requested, timeout
const refresh = () => {
requested = update(t)
players[0].score(turn)
players[1].score(turn)
loading.style.transform = `translate(${((turn / cap)*600)-600}px)`
position.style.transform = `translate(${((t / cap)*600)-600}px)`
}
const next = (player) => {
clearTimeout(player.timeout)
done.add(player)
requested || (requested = requestAnimationFrame(refresh))
// check if all AI are done
if (done.size >= players.length) {
turn++
const data = `[${players.join(',')}]`
let allDead = true
for (const p of players) {
if (p.dead) continue
allDead ? (allDead = false) : cap--
done.delete(p)
p.worker.postMessage(data)
p.timeout = setTimeout(p.kill, 50, 'TIMEOUT')
}
allDead && (cap = turn)
t === maxTurn ? (t = maxTurn = turn) : (maxTurn = turn)
}
}
await Promise.all(players.map(async (player, i) => {
const info = buildInfo(player, i)
player.score = info.score
const kill = (cause) => {
if (player.dead) return
console.log(`${player.name} died because he ${cause} at ${player.x} ${player.y}`)
player.cause = cause
player.dead = true
player.worker && player.worker.terminate()
info.status(cause)
}
// init the worker
try {
const url = await fetchBlob(await formatURL(player.name))
player.worker = new Worker(url, { type: 'module', name: player.name })
await new Promise((s, f) => {
player.worker.onmessage = e => e.data === 'loaded' ? s() : f(Error(e.data))
player.worker.onerror = f
player.worker.postMessage(JSON.stringify({ id: player.name, seed }))
})
// activate the AI
info.status('ACTIVE')
player.kill = cause => {
kill(cause)
next(player)
}
} catch (err) {
console.error(err)
kill('FAILED-TO-LOAD')
}
move(player.x, player.y, player.color, turn)
// handle each response from the AI
player.worker.onmessage = ({ data }) => {
if (done.has(player)) return player.kill('UNEXPECTED-MESSAGE')
if (!data) return player.kill('STUCK')
const { x, y } = JSON.parse(data)
if (typeof x !== 'number' || typeof y !== 'number') return player.kill('INVALID_INPUT')
if (notInBounds(x) || notInBounds(y)) return player.kill('OUT_OF_BOUNDS')
if (
!(x === player.x - 1 && y === player.y) &&
!(x === player.x + 1 && y === player.y) &&
!(x === player.x && player.y === y + 1) &&
!(x === player.x && player.y === y - 1)
) return player.kill('IMPOSSIBLE_MOVE')
player.x = x
player.y = y
const failure = move(x, y, player.color, turn)
if (failure === turn) {
for (const p of players) {
p.x === player.x && p.y === player.y && p.kill('MULTI-CRASH')
}
colorize(x, y, 0xffffff)
return player.kill('MULTI-CRASH')
} else if (failure) return player.kill('CRASH')
next(player)
}
player.worker.onerror = () => player.kill('AI-ERROR')
}))
next(players[0])
}
const params = new URLSearchParams(location.search)
const { ai = '', seed } = Object.fromEntries(params)
const search = () => String(params).replace(/%2F/g, '/').replace(/%40/g, '@')
if (!seed) {
params.set('seed', Math.abs(~~(Math.random()*0xffffffff)))
location = `${location.origin}${location.pathname}?${search()}${location.hash}`
}
start({ urls: ai.split(' '), seed }).then(console.log, console.error)
</script>
</body>
</html>