scummvm/dists/emscripten/custom_shell.html
Christian Kündig bc3679e928 EMSCRIPTEN: Major build improvements
- Updated Emscripten to version 3.1.8 (+ additional patches)
- Support for dynamic plugins
- Adding ScummvmFS with support for HTTP Range Requests for game data
- Automated games/demos bundling and ini config generation during build
- Allow passing CLI arguments via fragment identifier of the website (i.e. scummvm.html#—debuglevel=9 )
- UI improvements with nicer status messages, splash screen + favicon
- Fixed HiDPI handling and responsiveness
- Bugfix: Don't crash if gamepad support isn't available
2022-06-12 14:34:13 +02:00

364 lines
12 KiB
HTML

<!doctype html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta content="width=device-width,initial-scale=1,viewport-fit=cover" name=viewport>
<link rel="manifest" href="manifest.json">
<link rel="apple-touch-icon" href="scummvm-192.png">
<title>ScummVM</title>
<style>
body {
margin: 0;
padding: none;
background-color: #000;
}
.emscripten {
padding-right: 0;
margin-left: auto;
margin-right: auto;
display: block;
}
textarea.emscripten {
font-family: monospace;
width: 80%;
}
div.emscripten {
text-align: center;
}
div.emscripten_border {
border: 1px solid black;
padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
canvas.emscripten {
border: 0px none;
background: url("logo.svg");
background-position: center;
background-repeat: no-repeat;
background-color: #cc6600;
position: absolute;
top: 0px;
left: 0px;
margin: 0px;
width: 100%;
height: 100%;
overflow: hidden;
display: block;
}
@media (orientation: landscape) {
canvas.emscripten {
background-size: auto 33%;
}
}
@media (orientation: portrait) {
canvas.emscripten {
background-size: 80% auto;
}
}
#progress {
top: 0px;
left: 0px;
height: 10px;
width: 100%;
overflow: hidden;
display: block;
position: absolute;
z-index: 2;
border: 0px;
background: #c60
}
progress::-moz-progress-bar {
background: #f6e08a;
}
progress::-webkit-progress-value {
background: #f6e08a;
}
progress {
color: #f6e08a;
}
#status {
position: absolute;
bottom: 5em;
right: 0px;
padding: 5px;
text-align: right;
border-top-left-radius: 1em;
border-bottom-left-radius: 1em;
padding-left: 1em;
padding-right: 1em;
z-index: 3;
border: 3px solid black;
border-right: none;
background: #f6e08a;
font: bold large/1.4 "Trebuchet MS", Verdana, Tahoma, Sans-Serif;
}
#status.error {
background: red
}
</style>
</head>
<body>
<div class=emscripten>
<progress hidden id=progress max=100 value=0></progress>
</div>
<div class="emscripten" id="status">Downloading ScummVM...</div>
<div class=emscripten_border>
<canvas class=emscripten id=canvas oncontextmenu=event.preventDefault() tabindex=-1></canvas>
</div>
<hr>
<textarea class="emscripten" id="output" rows="8"></textarea>
<script src="https://cdnjs.cloudflare.com/ajax/libs/BrowserFS/2.0.0/browserfs.min.js"
integrity="sha512-mz0EI+Ay1uIJP7rZEX8C/JlTAcHRIQ8Sny4vxmmj8MSzDJgG9NxxY2pUmOGv1lO7imFIFMyjjCzEXEywNgaUdQ=="
crossorigin="anonymous"></script>
<script type="module">
import { ScummvmFS } from './scummvm_fs.js'
window.ScummvmFS = ScummvmFS
</script>
<script type='text/javascript'>
var statusElement = document.getElementById('status');
var progressElement = document.getElementById('progress');
function loadingDoneMessage() {
document.getElementById("progress").style.zIndex = 0;
return "All downloads complete."
}
function decodeInode(base64str) {
_readUInt16LE = function readUInt16LE(byteArray, offset) {
offset = offset >>> 0
return byteArray[offset] | (byteArray[offset + 1] << 8)
}
_readUInt32LE = function (byteArray, offset) {
return ((byteArray[offset]) |
(byteArray[offset + 1] << 8) |
(byteArray[offset + 2] << 16)) +
(byteArray[offset + 3] * 0x1000000)
}
var binary_string = window.atob(base64str);
var bytes = new Uint8Array(binary_string.length);
for (var i = 0; i < binary_string.length; i++) {
bytes[i] = binary_string.charCodeAt(i);
}
return {
'id': binary_string.substr(30),
'size': _readUInt32LE(bytes, 0),
'mode': _readUInt16LE(bytes, 4),
'atime': 0, // don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
'mtime': 0, // don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
'ctime': 0 // don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
}
}
function encodeInode(id, size, mode, atime, mtime, ctime) {
_writeUInt16LE = function (byteArray, value, offset) {
value = +value
offset = offset >>> 0
byteArray[offset] = (value & 0xff)
byteArray[offset + 1] = (value >>> 8)
return offset + 2
}
_writeUInt32LE = function (byteArray, value, offset) {
value = +value
offset = offset >>> 0
byteArray[offset + 3] = (value >>> 24)
byteArray[offset + 2] = (value >>> 16)
byteArray[offset + 1] = (value >>> 8)
byteArray[offset] = (value & 0xff)
return offset + 4
}
var bytes = new Uint8Array(30 + id.length);
_writeUInt32LE(bytes, size, 0);
_writeUInt16LE(bytes, mode, 4);
//buff.writeDoubleLE(this.atime, 6); don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
//buff.writeDoubleLE(this.mtime, 14); don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
//.writeDoubleLE(this.ctime, 22); don't feel like implementing ieee754 (maybe we could piggyback on BrowserFS here?)
for (var i = 0; i < id.length; i++) {
bytes[30 + i] = id.charCodeAt(i);
}
var binary_string = ""
for (var i = 0; i < bytes.length; i++) {
binary_string += String.fromCharCode(bytes[i]);
}
return btoa(binary_string)
}
function setupDefaultLocalData() {
if (localStorage.getItem("/") === null) {
return fetch("scummvm.ini").then((response) => {
return response.text().then(function (text) {
// default values, created by running scummvm with --add --recursive --path=/data/games
//var req = new XMLHttpRequest(); // a new request
//req.open("GET", , false);
//req.send(null);
ini_data = btoa(text)
folder_inode_id = "b3da6754-64c0-40f0-92ad-83b6ca6ffec9"
folder_inode = {
"id": folder_inode_id,
"size": 4096,
"mode": 16895
}
ini_inode_id = "1b4a97d1-4ce0-417f-985c-e0f22ca21aef"
ini_inode = {
"id": ini_inode_id,
"size": atob(ini_data).length,
"mode": 33206
}
folder_entry_id = "70879b79-8d58-400c-8143-332242320b34"
folder_listing = { "scummvm.ini": folder_entry_id }
defaultLocalStorage = {}
defaultLocalStorage["/"] = encodeInode(folder_inode['id'], folder_inode['size'], folder_inode['mode'], 0, 0, 0)
defaultLocalStorage[folder_inode_id] = btoa(JSON.stringify(folder_listing))
defaultLocalStorage[folder_entry_id] = encodeInode(ini_inode['id'], ini_inode['size'], ini_inode['mode'], 0, 0, 0)
defaultLocalStorage[ini_inode_id] = ini_data
for (key in defaultLocalStorage) {
localStorage.setItem(key, defaultLocalStorage[key]);
}
})
})
}
return Promise.resolve()
}
function setupLocalFilesystem() {
return setupDefaultLocalData().then(() => {
return new Promise((resolve, reject) => {
BrowserFS.FileSystem.LocalStorage.Create(function (err, lsfs) {
if (err) return reject(err)
BrowserFS.FileSystem.MountableFileSystem.Create({
'/': lsfs
}, function (err, mfs) {
if (err) return reject(err)
BrowserFS.initialize(mfs);
// BrowserFS is now ready to use!
var BFS = new BrowserFS.EmscriptenFS();
// Mount the file systems into Emscripten.
FS.mkdir('/local');
FS.mount(BFS, { root: '/' }, '/local');
return resolve()
})
})
});
});
}
function setupHTTPFilesystem(folder_name) {
FS.mkdir("/" + folder_name)
FS.mount(new ScummvmFS(FS, folder_name), {}, "/" + folder_name + "/");
}
function setupFilesystem() {
addRunDependency('scummvm-fs-setup');
setupLocalFilesystem().then(() => {
setupHTTPFilesystem("games")
setupHTTPFilesystem("plugins")
setupHTTPFilesystem("data")
removeRunDependency('scummvm-fs-setup');
});
}
var Module = {
preRun: [setupFilesystem],
postRun: [],
print: (function () {
var element = document.getElementById('output');
if (element) element.value = ''; // clear browser cache
return function (text) {
if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
// These replacements are necessary if you render to raw HTML
//text = text.replace(/&/g, "&amp;");
//text = text.replace(/</g, "&lt;");
//text = text.replace(/>/g, "&gt;");
//text = text.replace('\n', '<br>', 'g');
console.log(text);
if (element) {
element.value += text + "\n";
element.scrollTop = element.scrollHeight; // focus on bottom
}
};
})(),
printErr: function (text) {
if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
console.error(text);
},
canvas: (function () {
var canvas = document.getElementById('canvas');
// As a default initial behavior, pop up an alert when webgl context is lost. To make your
// application robust, you may want to override this behavior before shipping!
// See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
canvas.addEventListener("webglcontextlost", function (e) { alert('WebGL context lost. You will need to reload the page.'); e.preventDefault(); }, false);
return canvas;
})(),
setStatus: function (text) {
console.log((new Date()).toLocaleTimeString() + " " + text)
if (!Module.setStatus.last) Module.setStatus.last = { time: Date.now(), text: '' };
if (text === Module.setStatus.last.text) return;
var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
var now = Date.now();
if (m && now - Module.setStatus.last.time < 30) return; // if this is a progress update, skip it if too soon
Module.setStatus.last.time = now;
Module.setStatus.last.text = text;
if (m) {
text = m[1];
progressElement.value = parseInt(m[2]) * 100;
progressElement.max = parseInt(m[4]) * 100;
progressElement.hidden = false;
} else {
progressElement.value = null;
progressElement.max = null;
progressElement.hidden = true;
}
if (text && text.length > 0) {
text += "⚡️"
statusElement.style.display = "block";
} else {
statusElement.style.display = "none";
}
statusElement.innerHTML = text;
},
totalDependencies: 0,
monitorRunDependencies: function (left) {
this.totalDependencies = Math.max(this.totalDependencies, left);
Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies - left) + '/' + this.totalDependencies + ')' : loadingDoneMessage());
}
};
Module.setStatus('Downloading ScummVM...');
window.onerror = function () {
statusElement.classList.add("error")
Module.setStatus('Exception thrown, see JavaScript console');
Module.setStatus = function (text) {
if (text) Module.printErr('[post-exception status] ' + text);
};
};
</script>
{{{ SCRIPT }}}
</body>
</html>