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car.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>car</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script>
// THIS IS TEMP -- to be removed when the following has been removed as well
// .../Engine/Source/Runtime/Engine/Private/ActiveSound.cpp
// // for velocity-based effects like doppler
// ParseParams.Velocity = (ParseParams.Transform.GetTranslation() - LastLocation) / DeltaTime;
window.AudioContext = ( window.AudioContext || window.webkitAudioContext || null );
if ( AudioContext ) {
var ue4_hacks = {}; // making this obvious...
ue4_hacks.ctx = new AudioContext();
ue4_hacks.panner = ue4_hacks.ctx.createPanner();
ue4_hacks.panner.__proto__.setVelocity = ( ue4_hacks.panner.__proto__.setVelocity || function(){} );
}
</script>
<script>
// Minimum WebGL version that the page needs in order to run. UE4 will attempt to use WebGL 2 if available.
// Set this to 1 to run with a WebGL 1 fallback if the graphical features required by your UE4 project are
// low enough that they do not strictly require WebGL 2.
const requiredWebGLVersion = 1;
// Add ?webgl1 GET param to explicitly test the WebGL 1 fallback version even if browser does support WebGL 2.
const explicitlyUseWebGL1 = (location.search.indexOf('webgl1') != -1);
// Deduce which version to load up.
var supportsWasm = (typeof WebAssembly === 'object' && typeof WebAssembly.Memory === 'function');
// By default, Shipping builds serve out compressed assets, and Development builds serve uncompressed assets.
// Change the following line to customize. When hosting UE4 builds live on a production CDN, compression
// should always be enabled, since uncompressed files are too huge to be downloaded over the web.
const serveCompressedAssets = false;
// For the large .data file, there's two ways to manage compression: either UE4 UnrealPak tool can compress it in engine, or
// it can be gzip compressed on disk like other assets. Compressing via UnrealPak has the advantage of storing a smaller data
// file to IndexedDB, whereas gzip compressing to disk has the advantage of starting up the page slightly faster.
// If true, serve out 'UE4Game.data.gz', if false, serve out 'UE4Game.data'.
// const dataFileIsGzipCompressed = false;
var Module = {
// state management
infoPrinted: false,
lastcurrentDownloadedSize: 0,
totalDependencies: 0,
dataBytesStoredInIndexedDB: 0, // Track how much data is currently stored in IndexedDB.
assetDownloadProgress: {}, // Track how many bytes of each needed asset has been downloaded so far.
UE4_indexedDBName: 'UE4_assetDatabase_car', // TODO Nick: this should be an ascii ID string without special characters that is unique to the project that is being packaged
UE4_indexedDBVersion: 201711200210, // Bump this number to invalidate existing IDB storages in browsers.
};
// Tests if type === 'browser' or type === 'os' is 64-bit or not.
function heuristicIs64Bit(type) {
function contains(str, substrList) { for(var i in substrList) if (str.indexOf(substrList[i]) != -1) return true; return false; }
var ua = (navigator.userAgent + ' ' + navigator.oscpu + ' ' + navigator.platform).toLowerCase();
if (contains(ua, ['wow64'])) return type === 'os'; // 32bit browser on 64bit OS
if (contains(ua, ['x86_64', 'amd64', 'ia64', 'win64', 'x64', 'arm64', 'irix64', 'mips64', 'ppc64', 'sparc64'])) return true;
if (contains(ua, ['i386', 'i486', 'i586', 'i686', 'x86', 'arm7', 'android', 'mobile', 'win32'])) return false;
if (contains(ua, ['intel mac os'])) return true;
return false;
}
// For best stability on 32-bit browsers, allocate asm.js/WebAssembly heap up front before proceeding
// to load any other page content. This mitigates the chances that loading up page assets first would
// fragment the memory area of the browser process.
var pageSize = 64 * 1024;
var heuristic64BitBrowser = heuristicIs64Bit('browser');
function alignPageUp(size) { return pageSize * Math.ceil(size / pageSize); }
// The application should not be able to allocate more than MAX bytes of memory. If the application
// attempts to allocate any more, it will be forbidden. Use this field to defensively impose a
// strict limit to an application to keep it from going rogue with its memory usage beyond some
// undesired limit. The absolute maximum that is possible is one memory page short of 2GB.
var MAX_MEMORY_64BIT = Infinity;
var MAX_MEMORY_32BIT = 512*1024*1024;
var MAX_MEMORY = Math.min(alignPageUp(heuristic64BitBrowser ? MAX_MEMORY_64BIT : MAX_MEMORY_32BIT), 2048 * 1024 * 1024 - pageSize);
// The application needs at least this much memory to run. If the browser can't provide this,
// the page startup should be aborted in an out-of-memory exception.
var MIN_MEMORY = Math.min(alignPageUp(32 * 1024 * 1024), MAX_MEMORY);
// As a hint to the implementation, the application would prefer to reserve this much address
// space at startup, and the browser will attempt its best to satisfy this. If this is not
// possible, the browser will attempt to allocate anything as close to this IDEAL amount as
// possible, but at least MIN bytes.
var IDEAL_MEMORY_64BIT = 1024 * 1024 * 1024;
var IDEAL_MEMORY_32BIT = 1024 * 1024 * 1024;
var IDEAL_MEMORY = Math.min(Math.max(alignPageUp(heuristic64BitBrowser ? IDEAL_MEMORY_64BIT : IDEAL_MEMORY_32BIT), MIN_MEMORY), MAX_MEMORY);
// If true, assume the application will have most of its memory allocation pressure inside the
// application heap, so reserve address space there up front. If false, assume that the memory
// allocation pressure is outside the heap, so avoid reserving memory up front, until needed.
var RESERVE_MAX_64BIT = true;
var RESERVE_MAX_32BIT = false;
var RESERVE_MAX = heuristic64BitBrowser ? RESERVE_MAX_64BIT : RESERVE_MAX_32BIT;
function MB(x) { return (x/1024/1024) + 'MB'; }
function allocateHeap() {
// Try to get as much memory close to IDEAL, but at least MIN.
for(var mem = IDEAL_MEMORY; mem >= MIN_MEMORY; mem -= pageSize) {
try {
if (RESERVE_MAX)
Module['wasmMemory'] = new WebAssembly.Memory({ initial: mem / pageSize, maximum: MAX_MEMORY / pageSize });
else
Module['wasmMemory'] = new WebAssembly.Memory({ initial: mem / pageSize });
Module['buffer'] = Module['wasmMemory'].buffer;
if (Module['buffer'].byteLength != mem) throw 'Out of memory';
break;
} catch(e) { /*nop*/ }
}
if (!Module['buffer'] || !(Module['buffer'].byteLength >= MIN_MEMORY)) {
delete Module['buffer'];
throw 'Out of memory';
}
Module['TOTAL_MEMORY'] = Module['buffer'].byteLength;
}
allocateHeap();
Module['MAX_MEMORY'] = MAX_MEMORY;
console.log('Initial memory size: ' + MB(Module['TOTAL_MEMORY']) + ' (MIN_MEMORY: ' + MB(MIN_MEMORY) + ', IDEAL_MEMORY: ' + MB(IDEAL_MEMORY) + ', MAX_MEMORY: ' + MB(MAX_MEMORY) + ', RESERVE_MAX: ' + RESERVE_MAX + ', heuristic64BitBrowser: ' + heuristic64BitBrowser + ', heuristic64BitOS: ' + heuristicIs64Bit('os') + ')');
</script>
<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<style type="text/css">
html, body, .container {
height: 100%;
font-family: "Helvetica Neue", "HelveticaNeue", Helvetica, Arial, sans-serif;
}
.h4, h4 {
margin-top: 1pt;
margin-bottom: 1pt;
font-size: 10pt;
}
.container {
display: table;
vertical-align: middle;
border: 0px;
border-spacing: 0px;
}
.glyphicon-spin {
animation: spin 2000ms infinite linear;
}
@keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(359deg);
}
}
@-webkit-keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(359deg);
}
}
.wrapper {
position: relative;
margin: 1em auto 10px auto;
text-align: center;
min-width: 640px;
width: 100%;
height: 480px; /* initial height, will be dynamically adjusted at runtime */
max-width: 95%;
display: block;
align-items: center;
position: relative;
text-align: center;
justify-content: center;
}
.emscripten {
padding-right: 0;
margin-left: auto;
margin-right: auto;
display: block;
display: -webkit-box;
display: -moz-box;
display: box;
-webkit-box-align: center;
-moz-box-align: center;
box-align: center;
-webkit-box-pack: center;
-moz-box-pack: center;
box-pack: center;
}
#canvas:not([fullscreen]) {
padding-right: 0;
margin-left: auto;
margin-right: auto;
width: 100%;
}
.texthalf {
height: 37%;
border: 0px;
padding: 0px;
overflow-y: scroll;
font-size: 2em;
}
.buttonarea {
min-height: 3%;
border-top: 0px;
border-bottom: 0px;
padding: 0px;
margin-right: 0px;
margin-top: 0px;
margin-bottom: 0px;
}
.btn { padding: 0px; text-align: center; min-width: 150px }
.progress { background: rgba(245, 245, 245, 1); border: 0px solid rgba(245, 245, 245, 1); border-radius: 0px; height: 4px; }
.progress-bar-custom { background: rgba(153, 153, 153, 1); }
.centered-axis-xy {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
}
</style>
<div class="wrapper" id="mainarea">
<div class="alert alert-warning centered-axis-xy" style="min-height: 20px; display:none;" role="alert" id="compilingmessage">
<div id='loadTasks'> </div>
</div>
<canvas id="canvas" class="emscripten" oncontextmenu="event.preventDefault()" style="display:none;">
</div>
<div class="row buttonarea text-center" id="buttonrow">
<div class="col-sm-2 text-center"></div>
<div class="col-sm-2 text-center"><button type="button" class="btn btn-primary" onclick="Module['pauseMainLoop']();">Pause</button></div>
<div class="col-sm-2 text-center"><button type="button" class="btn btn-primary" onclick="Module['resumeMainLoop']();">Resume</button></div>
<div class="col-sm-2 text-center"></div>
<div class="col-sm-2 text-center"><button type="button" class="btn btn-primary" id='clear_indexeddb' onclick="deleteIndexedDBStorage();">Clear IndexedDB</button></div>
<div class="col-sm-2 text-center"><button type="button" class="btn btn-primary" id="fullscreen_request">FullScreen</button></div>
<div class="col-sm-2 text-center"></div>
<div class="col-sm-2 text-center"></div>
</div>
<div class="texthalf text-normal jumbotron " id="logwindow" style='display:none'></div>
<script type="text/javascript">
// combine all parallel downloads into one progress bar.
var totalDownloadSize = 0;
var currentDownloadedSize = 0;
// helper functions.
// http://stackoverflow.com/questions/4750015/regular-expression-to-find-urls-within-a-string
function getHTMLGetParam(name) {
if (name=(new RegExp('[?&]'+encodeURIComponent(name)+'=([^&]*)')).exec(location.search))
return decodeURIComponent(name[1]);
}
var UE4 = {
on_fatal: function() {
try {
UE4.on_fatal = Module.cwrap('on_fatal', null, ['string', 'string']);
} catch(e) {
UE4.on_fatal = function() {};
}
},
};
Module['preinitializedWebGLContext'] = null;
function getGpuInfo() {
var gl = Module['preinitializedWebGLContext'];
if (!gl) return '(no GL: ' + Module['webGLErrorReason'] + ')';
var glInfo = '';
var debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
if (debugInfo) glInfo += gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL) + ' ' + gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL) + '/';
glInfo += gl.getParameter(gl.VENDOR) + ' ' + gl.getParameter(gl.RENDERER);
glInfo += ' ' + gl.getParameter(gl.VERSION);
glInfo += ', ' + gl.getParameter(gl.SHADING_LANGUAGE_VERSION);
if (Module['softwareWebGL']) glInfo += ' (software)';
return glInfo;
}
function detectWebGL() {
var canvas = Module['canvas'] || document.createElement("canvas");
// If you run into problems with WebGL 2, or for quick testing purposes, you can disable UE4
// from using WebGL 2 and revert back to WebGL 1 by setting the following flag to true.
var disableWebGL2 = false;
if (explicitlyUseWebGL1) {
disableWebGL2 = true;
console.log('Disabled WebGL 2 as requested by ?webgl1 GET param.');
}
var names = ["webgl", "experimental-webgl"];
if (disableWebGL2) {
WebGL2RenderingContext = undefined;
} else {
names = ["webgl2"].concat(names);
}
function testError(e) { Module['webGLErrorReason'] = e.statusMessage; };
canvas.addEventListener("webglcontextcreationerror", testError, false);
try {
for(var failIfMajorPerformanceCaveat = 1; failIfMajorPerformanceCaveat >= 0; --failIfMajorPerformanceCaveat) {
for(var i in names) {
try {
var context = canvas.getContext(names[i], {antialias:false,alpha:false,depth:true,stencil:true,failIfMajorPerformanceCaveat:!!failIfMajorPerformanceCaveat});
Module['preinitializedWebGLContext'] = context;
Module['softwareWebGL'] = !failIfMajorPerformanceCaveat;
if (context && typeof context.getParameter == "function") {
if (typeof WebGL2RenderingContext !== 'undefined' && context instanceof WebGL2RenderingContext && names[i] == 'webgl2') {
return 2;
} else {
// We were able to precreate only a WebGL 1 context, remove support for WebGL 2 from the rest of the page execution.
WebGL2RenderingContext = undefined;
return 1;
}
}
} catch(e) { Module['webGLErrorReason'] = e.toString(); }
}
}
} finally {
canvas.removeEventListener("webglcontextcreationerror", testError, false);
}
return 0;
}
Module['canvas'] = document.getElementById('canvas');
// Canvas scaling mode should be set to one of: 1=STRETCH, 2=ASPECT, or 3=FIXED.
// This dictates how the canvas size changes when the browser window is resized
// by dragging from the corner.
var canvasWindowedScaleMode = 2 /*ASPECT*/;
// High DPI setting configures whether to match the canvas size 1:1 with
// the physical pixels on the screen.
// For background, see https://www.khronos.org/webgl/wiki/HandlingHighDPI
var canvasWindowedUseHighDpi = true;
// Stores the initial size of the canvas in physical pixel units.
// If canvasWindowedScaleMode == 3 (FIXED), this size defines the fixed resolution
// that the app will render to.
// If canvasWindowedScaleMode == 2 (ASPECT), this size defines only the aspect ratio
// that the canvas will be constrained to.
// If canvasWindowedScaleMode == 1 (STRETCH), these size values are ignored.
var canvasAspectRatioWidth = 1366;
var canvasAspectRatioHeight = 768;
// Fullscreen scaling mode behavior (export these to Module object for the engine to read)
// This value is one of:
// 0=NONE: The same canvas size is kept when entering fullscreen without change.
// 1=STRETCH: The canvas is resized to the size of the whole screen, potentially changing aspect ratio.
// 2=ASPECT: The canvas is resized to the size of the whole screen, but retaining current aspect ratio.
// 3=FIXED: The canvas is centered on screen with a fixed resolution.
Module['UE4_fullscreenScaleMode'] = canvasWindowedScaleMode;
// When entering fullscreen mode, should UE4 engine resize the canvas?
// 0=No resizing (do it manually in resizeCanvas()), 1=Resize to standard DPI, 2=Resize to highDPI
Module['UE4_fullscreenCanvasResizeMode'] = canvasWindowedUseHighDpi ? 2/*HIDPI*/ : 1/*Standard DPI*/;
// Specifies how canvas is scaled to fullscreen, if not rendering in 1:1 pixel perfect mode.
// One of 0=Default, 1=Nearest, 2=Bilinear
Module['UE4_fullscreenFilteringMode'] = 0;
document.addEventListener('error', function(){document.getElementById('clear_indexeddb').style.display = 'inline-block';}, false);
// Startup task which is run after UE4 engine has launched.
function postRunEmscripten() {
taskFinished(TASK_MAIN);
$("#compilingmessage").remove();
// The default Emscripten provided canvas resizing behavior is not needed,
// since we are controlling the canvas sizes here, so stub those functions out.
Browser.updateCanvasDimensions = function() {};
Browser.setCanvasSize = function() {};
// If you'd like to configure the initial canvas size to render using the resolution
// defined in UE4 DefaultEngine.ini [SystemSettings] r.setRes=WidthxHeight,
// uncomment the following two lines before calling resizeCanvas() below:
// canvasAspectRatioWidth = UE_JSlib.UE_GSystemResolution_ResX();
// canvasAspectRatioHeight = UE_JSlib.UE_GSystemResolution_ResY();
// Configure the size of the canvas and display it.
resizeCanvas();
Module['canvas'].style.display = 'block';
// Whenever the browser window size changes, relayout the canvas size on the page.
window.addEventListener('resize', resizeCanvas, false);
window.addEventListener('orientationchange', resizeCanvas, false);
// The following is needed if game is within an iframe - main window already has focus...
window.focus();
}
Module.postRun = [postRunEmscripten];
// The resizeCanvas() function recomputes the canvas size on the page as the user changes
// the browser window size.
function resizeCanvas(aboutToEnterFullscreen) {
// Configuration variables, feel free to play around with these to tweak.
var minimumCanvasHeightCssPixels = 480; // the visible size of the canvas should always be at least this high (in CSS pixels)
var minimumCanvasHeightFractionOfBrowserWindowHeight = 0.65; // and also vertically take up this much % of the total browser client area height.
if (aboutToEnterFullscreen) { // UE4 engine is calling this function right before entering fullscreen?
// If you want to perform specific resolution setup here, do so by setting Module['canvas'].width x Module['canvas'].height now,
// and configure Module['UE4_fullscreenXXX'] fields above. Most of the time, the defaults are good, so no need to resize here.
// Return true here if you want to abort entering fullscreen mode altogether.
return;
}
// The browser called resizeCanvas() to notify that we just entered fullscreen? In that case, we never react, since the strategy is
// to always set the canvas size right before entering fullscreen.
if (document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement) {
return;
}
var mainArea = document.getElementById('mainarea');
var canvasRect = mainArea.getBoundingClientRect();
// Compute the unconstrained size for the div that encloses the canvas, in CSS pixel units.
var cssWidth = canvasRect.right - canvasRect.left;
var cssHeight = Math.max(minimumCanvasHeightCssPixels, canvasRect.bottom - canvasRect.top, window.innerHeight * minimumCanvasHeightFractionOfBrowserWindowHeight);
if (canvasWindowedScaleMode == 3/*NONE*/) {
// In fixed display mode, render to a statically determined WebGL render target size.
var newRenderTargetWidth = canvasAspectRatioWidth;
var newRenderTargetHeight = canvasAspectRatioHeight;
} else {
// Convert unconstrained render target size from CSS to physical pixel units.
var newRenderTargetWidth = canvasWindowedUseHighDpi ? (cssWidth * window.devicePixelRatio) : cssWidth;
var newRenderTargetHeight = canvasWindowedUseHighDpi ? (cssHeight * window.devicePixelRatio) : cssHeight;
// Apply aspect ratio constraints, if desired.
if (canvasWindowedScaleMode == 2/*ASPECT*/) {
if (cssWidth * canvasAspectRatioHeight > canvasAspectRatioWidth * cssHeight) {
newRenderTargetWidth = newRenderTargetHeight * canvasAspectRatioWidth / canvasAspectRatioHeight;
} else {
newRenderTargetHeight = newRenderTargetWidth * canvasAspectRatioHeight / canvasAspectRatioWidth;
}
}
// WebGL render target sizes are always full integer pixels in size, so rounding is critical for CSS size computations below.
newRenderTargetWidth = Math.round(newRenderTargetWidth);
newRenderTargetHeight = Math.round(newRenderTargetHeight);
}
// Very subtle but important behavior is that the size of a DOM element on a web page in CSS pixel units can be a fraction, e.g. on
// high DPI scaling displays (CSS pixel units are "virtual" pixels). If the CSS size and physical pixel size of the WebGL canvas do
// not correspond to each other 1:1 after window.devicePixelRatio scaling has been applied, the result can look blurry. Therefore always
// first compute the WebGL render target size first in physical pixels, and convert that back to CSS pixels so that the CSS pixel size
// will perfectly align up and the result look clear without scaling applied.
cssWidth = canvasWindowedUseHighDpi ? (newRenderTargetWidth / window.devicePixelRatio) : newRenderTargetWidth;
cssHeight = canvasWindowedUseHighDpi ? (newRenderTargetHeight / window.devicePixelRatio) : newRenderTargetHeight;
Module['canvas'].width = newRenderTargetWidth;
Module['canvas'].height = newRenderTargetHeight;
Module['canvas'].style.width = cssWidth + 'px';
Module['canvas'].style.height = mainArea.style.height = cssHeight + 'px';
// Tell the engine that the web page has changed the size of the WebGL render target on the canvas (Module['canvas'].width/height).
// This will update the GL viewport and propagate the change throughout the engine.
// If the CSS style size is changed, this function doesn't need to be called.
if (UE_JSlib.UE_CanvasSizeChanged) UE_JSlib.UE_CanvasSizeChanged();
}
Module['UE4_resizeCanvas'] = resizeCanvas;
Module.arguments = ['../../../car/car.uproject ',''];
// we are serving via a server and it is unreal file server?
if (location.host != "" && getHTMLGetParam("cookonthefly") == "true") {
Module.arguments.push("' -filehostIp=" + location.protocol + "//" + location.host + " '");
}
function addLog(info, color) {
$("#logwindow").append("<h4><small>" + info + " </small></h4>");
}
Module.print = addLog;
Module.printErr = function(text) {
console.error(text);
};
// Module.locateFile() routes asset downloads to either gzip compressed or uncompressed assets.
Module.locateFile = function(name) {
var serveGzipped = serveCompressedAssets;
// When serving from file:// URLs, don't read .gz compressed files, because these files can't be transparently uncompressed.
var isFileProtocol = name.indexOf('file://') != -1 || location.protocol.indexOf('file') != -1;
if (isFileProtocol) {
if (!Module['shownFileProtocolWarning']) {
showWarningRibbon('Attempting to load the page via the "file://" protocol. This only works in Firefox, and even there only when not using compression, so attempting to load uncompressed assets. Please host the page on a web server and visit it via a "http://" URL.');
Module['shownFileProtocolWarning'] = true;
}
serveGzipped = false;
}
// uncompressing very large gzip files may slow down startup times.
// if (!dataFileIsGzipCompressed && name.split('.').slice(-1)[0] == 'data') serveGzipped = false;
return serveGzipped ? (name + 'gz') : name;
};
Module.getPreloadedPackage = function(remotePackageName, remotePackageSize) {
return Module['preloadedPackages'] ? Module['preloadedPackages'][remotePackageName] : null;
}
// Asynchronously appends the given script code to DOM. This is to ensure that
// browsers parse and compile the JS code parallel to all other execution.
function addScriptToDom(scriptCode) {
return new Promise(function(resolve, reject) {
var script = document.createElement('script');
var blob = (scriptCode instanceof Blob) ? scriptCode : new Blob([scriptCode], { type: 'text/javascript' });
var objectUrl = URL.createObjectURL(blob);
script.src = objectUrl;
script.onload = function() {
script.onload = script.onerror = null; // Remove these onload and onerror handlers, because these capture the inputs to the Promise and the input function, which would leak a lot of memory!
URL.revokeObjectURL(objectUrl); // Free up the blob. Note that for debugging purposes, this can be useful to comment out to be able to read the sources in debugger.
resolve();
}
script.onerror = function(e) {
script.onload = script.onerror = null; // Remove these onload and onerror handlers, because these capture the inputs to the Promise and the input function, which would leak a lot of memory!
URL.revokeObjectURL(objectUrl);
console.error('script failed to add to dom: ' + e);
console.error(scriptCode);
console.error(e);
// The onerror event sends a DOM Level 3 event error object, which does not seem to have any kind of human readable error reason (https://developer.mozilla.org/en-US/docs/Web/Events/error)
// There is another error event object at https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent, which would have an error reason. Perhaps that error event might sometimes be fired,
// but if not, guess that the error reason was an OOM, since we are dealing with large .js files.
reject(e.message || "(out of memory?)");
}
document.body.appendChild(script);
});
}
var TASK_DOWNLOADING = 0;
var TASK_COMPILING = 1;
var TASK_SHADERS = 2;
var TASK_MAIN = 3;
var loadTasks = [ 'Downloading', 'Compiling WebAssembly', 'Building shaders', 'Launching engine'];
function taskProgress(taskId, progress) {
var c = document.getElementById('compilingmessage');
if (c) c.style.display = 'block';
else return;
var l = document.getElementById('load_' + taskId);
if (!l) {
var tasks = document.getElementById('loadTasks');
if (!tasks) return;
l = document.createElement('div');
l.innerHTML = '<span id="icon_' + taskId + '" class="glyphicon glyphicon-refresh glyphicon-spin"></span> <span id="load_' + taskId + '"></span>';
tasks.appendChild(l);
l = document.getElementById('load_' + taskId);
}
if (!l.startTime) l.startTime = performance.now();
var text = loadTasks[taskId];
if (progress && progress.total) {
text += ': ' + (progress.currentShow || progress.current) + '/' + (progress.totalShow || progress.total) + ' (' + (progress.current * 100 / progress.total).toFixed(0) + '%)';
} else {
text += '...';
}
l.innerHTML = text;
}
function showErrorDialog(errorText) {
console.error('error: ' + errorText);
var existingErrorDialog = document.getElementById('errorDialog');
if (existingErrorDialog) {
existingErrorDialog.innerHTML += '<br>' + errorText;
} else {
$('#mainarea').empty();
$('#mainarea').append('<div class="alert alert-danger centered-axis-xy" style ="min-height: 10pt" role="alert" id="errorDialog">' + errorText + '</div></div>');
}
}
function showWarningRibbon(warningText) {
var existingWarningDialog = document.getElementById('warningDialog');
if (existingWarningDialog) {
existingWarningDialog.innerHTML += '<br>' + warningText;
} else {
$('#buttonrow').prepend('<div class="alert alert-warning centered-axis-x" role="warning" id="warningDialog" style="padding-top:5px; padding-bottom: 5px">' + warningText + '</div></div>');
}
}
function taskFinished(taskId, error) {
var l = document.getElementById('load_' + taskId);
var icon = document.getElementById('icon_' + taskId);
if (l && icon) {
var totalTime = performance.now() - l.startTime;
if (!error) {
l.innerHTML = loadTasks[taskId] + ' (' + (totalTime/1000).toFixed(2) + 's)';
icon.className = 'glyphicon glyphicon-ok';
}
else {
l.innerHTML = loadTasks[taskId] + ': FAILED! ' + error;
icon.className = 'glyphicon glyphicon-remove';
showErrorDialog(loadTasks[taskId] + ' failed: <br> ' + error);
}
}
}
window.onerror = function(e) {
e = e.toString();
if (e.toLowerCase().indexOf('memory') != -1) {
e += '<br>';
if (!heuristic64BitBrowser) e += ' Try running in a 64-bit browser to resolve.';
}
showErrorDialog(e);
}
function formatBytes(bytes) {
if (bytes >= 1024*1024*1024) return (bytes / (1024*1024*1024)).toFixed(1) + ' GB';
if (bytes >= 1024*1024) return (bytes / (1024*1024)).toFixed(0) + ' MB';
if (bytes >= 1024) return (bytes / 1024).toFixed(1) + ' KB';
return bytes + ' B';
}
function reportDataBytesStoredInIndexedDB(deltaBytes) {
if (deltaBytes === null) Module['dataBytesStoredInIndexedDB'] = 0; // call with deltaBytes == null to report that DB was cleared.
else Module['dataBytesStoredInIndexedDB'] += deltaBytes;
document.getElementById('clear_indexeddb').innerText = 'Clear IndexedDB (' + formatBytes(Module['dataBytesStoredInIndexedDB']) + ')';
}
function reportDownloadProgress(url, downloadedBytes, totalBytes, finished) {
Module['assetDownloadProgress'][url] = {
current: downloadedBytes,
total: totalBytes,
finished: finished
};
var aggregated = {
current: 0,
total: 0,
finished: true
};
for(var i in Module['assetDownloadProgress']) {
aggregated.current += Module['assetDownloadProgress'][i].current;
aggregated.total += Module['assetDownloadProgress'][i].total;
aggregated.finished = aggregated.finished && Module['assetDownloadProgress'][i].finished;
}
aggregated.currentShow = formatBytes(aggregated.current);
aggregated.totalShow = formatBytes(aggregated.total);
if (aggregated.finished) taskFinished(TASK_DOWNLOADING);
else taskProgress(TASK_DOWNLOADING, aggregated);
}
function download(url, responseType) {
return new Promise(function(resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.responseType = responseType || 'blob';
reportDownloadProgress(url, 0, 1);
xhr.onload = function() {
if (xhr.status == 0 || (xhr.status >= 200 && xhr.status < 300)) {
var len = xhr.response.size || xhr.response.byteLength;
reportDownloadProgress(url, len, len, true);
resolve(xhr.response);
} else {
taskFinished(TASK_DOWNLOADING, 'HTTP error ' + (xhr.status || 404) + ' ' + xhr.statusText + ' on file ' + url);
reject({
status: xhr.status,
statusText: xhr.statusText
});
}
};
xhr.onprogress = function(p) {
if (p.lengthComputable) reportDownloadProgress(url, p.loaded, p.total);
};
xhr.onerror = function(e) {
var isFileProtocol = url.indexOf('file://') == 0 || location.protocol.indexOf('file') != -1;
if (isFileProtocol) taskFinished(TASK_DOWNLOADING, 'HTTP error ' + (xhr.status || 404) + ' ' + xhr.statusText + ' on file ' + url +'<br>Try using a web server to avoid loading via a "file://" URL.'); // Convert the most common source of errors to a more friendly message format.
else taskFinished(TASK_DOWNLOADING, 'HTTP error ' + (xhr.status || 404) + ' ' + xhr.statusText + ' on file ' + url);
reject({
status: xhr.status || 404,
statusText: xhr.statusText
});
};
xhr.onreadystatechange = function() {
if (xhr.readyState >= xhr.HEADERS_RECEIVED) {
if (url.endsWith('gz') && (xhr.status == 0 || xhr.status == 200)) {
if (xhr.getResponseHeader('Content-Encoding') != 'gzip') {
// A fallback is to set serveCompressedAssets = false to serve uncompressed assets instead, but that is not really recommended for production use, since gzip compression shrinks
// download sizes so dramatically that omitting it for production is not a good idea.
taskFinished(TASK_DOWNLOADING, 'Downloaded a compressed file ' + url + ' without the necessary HTTP response header "Content-Encoding: gzip" specified!<br>Please configure gzip compression on this asset on the web server to serve gzipped assets!');
xhr.onload = xhr.onprogress = xhr.onerror = xhr.onreadystatechange = null; // Abandon tracking events from this XHR further.
xhr.abort();
return reject({
status: 406,
statusText: 'Not Acceptable'
});
}
// After enabling Content-Encoding: gzip, make sure that the appropriate MIME type is being used for the asset, i.e. the MIME
// type should be that of the uncompressed asset, and not the MIME type of the compression method that was used.
if (xhr.getResponseHeader('Content-Type').toLowerCase().indexOf('zip') != -1) {
function expectedMimeType(url) {
if (url.indexOf('.wasm') != -1) return 'application/wasm';
if (url.indexOf('.js') != -1) return 'application/javascript';
return 'application/octet-stream';
}
taskFinished(TASK_DOWNLOADING, 'Downloaded a compressed file ' + url + ' with incorrect HTTP response header "Content-Type: ' + xhr.getResponseHeader('Content-Type') + '"!<br>Please set the MIME type of the asset to "' + expectedMimeType(url) + '".');
xhr.onload = xhr.onprogress = xhr.onerror = xhr.onreadystatechange = null; // Abandon tracking events from this XHR further.
xhr.abort();
return reject({
status: 406,
statusText: 'Not Acceptable'
});
}
}
}
}
xhr.send(null);
});
}
function getIDBRequestErrorString(req) {
try { return req.error ? ('IndexedDB ' + req.error.name + ': ' + req.error.message) : req.result;
} catch(ex) { return null; }
}
function deleteIndexedDBStorage(dbName, onsuccess, onerror, onblocked) {
var idb = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
if (Module['dbInstance']) Module['dbInstance'].close();
if (!dbName) dbName = Module['UE4_indexedDBName'];
var req = idb.deleteDatabase(dbName);
req.onsuccess = function() { console.log('Deleted IndexedDB storage ' + dbName + '!'); reportDataBytesStoredInIndexedDB(null); if (onsuccess) onsuccess(); }
req.onerror = function(evt) {
var errorString = getIDBRequestErrorString(req);
console.error('Failed to delete IndexedDB storage ' + dbName + ', ' + errorString);
evt.preventDefault();
if (onerror) onerror(errorString);
};
req.onblocked = function(evt) {
var errorString = getIDBRequestErrorString(req);
console.error('Failed to delete IndexedDB storage ' + dbName + ', DB was blocked! ' + errorString);
evt.preventDefault();
if (onblocked) onblocked(errorString);
}
}
var enableReadFromIndexedDB = (location.search.indexOf('noidbread') == -1);
var enableWriteToIndexedDB = enableReadFromIndexedDB && (location.search.indexOf('noidbwrite') == -1);
enableReadFromIndexedDB = false;
enableWriteToIndexedDB = false;
if (!enableReadFromIndexedDB) showWarningRibbon('Running with IndexedDB access disabled.');
else if (!enableWriteToIndexedDB) showWarningRibbon('Running in read-only IndexedDB access mode.');
function storeToIndexedDB(db, key, value) {
return new Promise(function(resolve, reject) {
if (!enableWriteToIndexedDB) return reject('storeToIndexedDB: IndexedDB writes disabled by "?noidbwrite" option');
function fail(e) {
console.error('Failed to store file ' + key + ' to IndexedDB storage! error: ' + e);
if (!Module['idberrorShown']) {
showWarningRibbon('Failed to store file ' + key + ' to IndexedDB, error: ' + e);
Module['idberrorShown'] = true;
}
return reject(e);
}
if (!db) return fail('IndexedDB not available!');
if (location.protocol.indexOf('file') != -1) return reject('Loading via file://, skipping caching to IndexedDB');
try {
var transaction = db.transaction(['FILES'], 'readwrite');
var packages = transaction.objectStore('FILES');
var putRequest = packages.put(value, "file/" + Module.key + '/' + key);
putRequest.onsuccess = function(evt) {
if (value.byteLength || value.length) reportDataBytesStoredInIndexedDB(value.size || value.byteLength || value.length);
resolve(key);
};
putRequest.onerror = function(evt) {
var errorString = getIDBRequestErrorString(putRequest) || ('IndexedDB request error: ' + evt);
evt.preventDefault();
fail(errorString);
};
} catch(e) {
fail(e);
}
});
}
function fetchFromIndexedDB(db, key) {
return new Promise(function(resolve, reject) {
if (!enableReadFromIndexedDB) return reject('fetchFromIndexedDB: IndexedDB reads disabled by "?noidbread" option');
function fail(e) {
console.error('Failed to read file ' + key + ' from IndexedDB storage! error:');
console.error(e);
if (!Module['idberrorShown']) {
showWarningRibbon('Failed to read file ' + key + ' from IndexedDB, error: ' + e);
Module['idberrorShown'] = true;
}
return reject(e);
}
if (!db) return fail('IndexedDB not available!');
try {
var transaction = db.transaction(['FILES'], 'readonly');
var packages = transaction.objectStore('FILES');
var getRequest = packages.get("file/" + Module.key + '/' + key);
getRequest.onsuccess = function(evt) {
if (evt.target.result) {
var len = evt.target.result.size || evt.target.result.byteLength || evt.target.result.length;
if (len) reportDataBytesStoredInIndexedDB(len);
resolve(evt.target.result);
} else {
// Succeeded to load, but the load came back with the value of undefined, treat that as an error since we never store undefined in db.
reject();
}
};
getRequest.onerror = function(evt) {
var errorString = getIDBRequestErrorString(getRequest) || ('IndexedDB.get request error: ' + evt);
evt.preventDefault();
fail(errorString);
};
} catch(e) {
fail(e);
}
});
}
function fetchOrDownloadAndStore(db, url, responseType) {
return new Promise(function(resolve, reject) {
fetchFromIndexedDB(db, url)
.then(function(data) { return resolve(data); })
.catch(function(error) {
return download(url, responseType)
.then(function(data) {
// Treat IDB store as separate operation that's not part of the Promise chain.
/*return*/ storeToIndexedDB(db, url, data)
.then(function() { return resolve(data); })
.catch(function(error) {
console.error('Failed to store download to IndexedDB! ' + error);
return resolve(data); // succeeded download, but failed to store - ignore failure in that case and just proceed to run by calling the success handler.
})
})
.catch(function(error) { return reject(error); })
});
});
}
function openIndexedDB(dbName, dbVersion) {
return new Promise(function(resolve, reject) {
if (!enableReadFromIndexedDB) return reject('openIndexedDB: IndexedDB disabled by "?noidbread" option');
try {
var idb = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
var openRequest = idb.open(dbName, dbVersion);
} catch(e) { return reject(e); }
openRequest.onupgradeneeded = function(evt) {
var db = evt.target.result;
if (db.objectStoreNames.contains('FILES')) db.deleteObjectStore('FILES');
db.createObjectStore('FILES');
};
openRequest.onsuccess = function(evt) {
resolve(evt.target.result);
};
openRequest.onerror = function(evt) {
var errorString = getIDBRequestErrorString(openRequest) || ('IndexedDB request error: ' + evt);
evt.preventDefault();
reject(errorString);
};
});
}
Module['instantiateWasm'] = function(info, receiveInstance) {
Module['wasmDownloadAction'].then(function(downloadResults) {
taskProgress(TASK_COMPILING);
var wasmInstantiate = WebAssembly.instantiate(downloadResults.wasmModule || new Uint8Array(downloadResults.wasmBytes), info);
return wasmInstantiate.then(function(output) {
var instance = output.instance || output;
var module = output.module;
taskFinished(TASK_COMPILING);
Module['wasmInstantiateActionResolve'](instance);
receiveInstance(instance);
// After a successful instantiation, attempt to save the compiled Wasm Module object to IndexedDB.
if (!downloadResults.fromIndexedDB) {
storeToIndexedDB(downloadResults.db, 'wasmModule', module).catch(function() {
// If the browser did not support storing Wasm Modules to IndexedDB, try to store the Wasm instance instead.
return storeToIndexedDB(downloadResults.db, 'wasmBytes', downloadResults.wasmBytes);
});
}
});
}).catch(function(error) {
$ ('#mainarea').empty();
$ ('#mainarea').append('<div class="alert alert-danger centered-axis-xy" style ="min-height: 10pt" role="alert">WebAssembly instantiation failed: <br> ' + error + '</div></div>');
});
return {};
}
// Given a blob, asynchronously reads the byte contents of that blob to an arraybuffer and returns it as a Promise.
function readBlobToArrayBuffer(blob) {
return new Promise(function(resolve, reject) {
var fileReader = new FileReader();
fileReader.onload = function() { resolve(this.result); }
fileReader.onerror = function(e) { reject(e); }
fileReader.readAsArrayBuffer(blob);
});
}
function compileShadersFromJson(jsonData) {
var shaderPrograms = [];
if (jsonData instanceof ArrayBuffer) jsonData = new TextDecoder('utf-8').decode(new DataView(jsonData));
var programsDict = JSON.parse(jsonData);
for(var i in programsDict) {
shaderPrograms.push(programsDict[i]);
}
var gl = Module['preinitializedWebGLContext'];
Module['precompiledShaders'] = [];
Module['precompiledPrograms'] = [];
Module['glIDCounter'] = 1;
Module['precompiledUniforms'] = [null];
var promise = new Promise(function(resolve, reject) {
var nextProgramToBuild = 0;
function buildProgram() {
if (nextProgramToBuild >= shaderPrograms.length) {
taskFinished(TASK_SHADERS);
return resolve();
}
var p = shaderPrograms[nextProgramToBuild++];
taskProgress(TASK_SHADERS, {current: nextProgramToBuild, total: shaderPrograms.length });
var program = gl.createProgram();
function lineNumberize(str) {
str = str.split('\n');
for(var i = 0; i < str.length; ++i) str[i] = (i<9?' ':'') + (i<99?' ':'') + (i+1) + ': ' + str[i];
return str.join('\n');
}
var vs = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(vs, p.vs);
gl.compileShader(vs);
var success = gl.getShaderParameter(vs, gl.COMPILE_STATUS);
var compileLog = gl.getShaderInfoLog(vs);
if (compileLog) compileLog = compileLog.trim();
if (compileLog) console.error('Compiling vertex shader: ' + lineNumberize(p.vs));
if (!success) console.error('Vertex shader compilation failed!');
if (compileLog) console.error('Compilation log: ' + compileLog);
if (!success) return reject('Vertex shader compilation failed: ' + compileLog);
gl.attachShader(program, vs);
Module['precompiledShaders'].push({
vs: p.vs,
shader: vs,
program: program
});
var fs = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(fs, p.fs);
gl.compileShader(fs);
var success = gl.getShaderParameter(fs, gl.COMPILE_STATUS);
var compileLog = gl.getShaderInfoLog(fs);
if (compileLog) compileLog = compileLog.trim();
if (compileLog) console.error('Compiling fragment shader: ' + lineNumberize(p.fs));
if (!success) console.error('Fragment shader compilation failed!');
if (compileLog) console.error('Compilation log: ' + compileLog);
if (!success) return reject('Fragment shader compilation failed: ' + compileLog);
gl.attachShader(program, fs);
Module['precompiledShaders'].push({
fs: p.fs,
shader: fs,
program: program
});
for(var name in p.attribs) {
gl.bindAttribLocation(program, p.attribs[name], name);
}
gl.linkProgram(program);
var success = gl.getProgramParameter(program, gl.LINK_STATUS);
var linkLog = gl.getProgramInfoLog(program);
if (linkLog) linkLog = linkLog.trim();
if (linkLog) console.error('Linking shader program, vs: \n' + lineNumberize(p.vs) + ', \n fs:\n' + lineNumberize(p.fs));
if (!success) console.error('Shader program linking failed!');
if (linkLog) console.error('Link log: ' + linkLog);
if (!success) return reject('Shader linking failed: ' + linkLog);
var ptable = {
uniforms: {},
maxUniformLength: 0,
maxAttributeLength: -1,