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-rw-r--r--platform/javascript/engine.js411
1 files changed, 0 insertions, 411 deletions
diff --git a/platform/javascript/engine.js b/platform/javascript/engine.js
deleted file mode 100644
index 227accadb0..0000000000
--- a/platform/javascript/engine.js
+++ /dev/null
@@ -1,411 +0,0 @@
- // The following is concatenated with generated code, and acts as the end
- // of a wrapper for said code. See pre.js for the other part of the
- // wrapper.
- exposedLibs['PATH'] = PATH;
- exposedLibs['FS'] = FS;
- return Module;
- },
-};
-
-(function() {
- var engine = Engine;
-
- var DOWNLOAD_ATTEMPTS_MAX = 4;
-
- var basePath = null;
- var wasmFilenameExtensionOverride = null;
- var engineLoadPromise = null;
-
- var loadingFiles = {};
-
- function getPathLeaf(path) {
-
- while (path.endsWith('/'))
- path = path.slice(0, -1);
- return path.slice(path.lastIndexOf('/') + 1);
- }
-
- function getBasePath(path) {
-
- if (path.endsWith('/'))
- path = path.slice(0, -1);
- if (path.lastIndexOf('.') > path.lastIndexOf('/'))
- path = path.slice(0, path.lastIndexOf('.'));
- return path;
- }
-
- function getBaseName(path) {
-
- return getPathLeaf(getBasePath(path));
- }
-
- Engine = function Engine() {
-
- this.rtenv = null;
-
- var LIBS = {};
-
- var initPromise = null;
- var unloadAfterInit = true;
-
- var preloadedFiles = [];
-
- var resizeCanvasOnStart = true;
- var progressFunc = null;
- var preloadProgressTracker = {};
- var lastProgress = { loaded: 0, total: 0 };
-
- var canvas = null;
- var executableName = null;
- var locale = null;
- var stdout = null;
- var stderr = null;
-
- this.init = function(newBasePath) {
-
- if (!initPromise) {
- initPromise = Engine.load(newBasePath).then(
- instantiate.bind(this)
- );
- requestAnimationFrame(animateProgress);
- if (unloadAfterInit)
- initPromise.then(Engine.unloadEngine);
- }
- return initPromise;
- };
-
- function instantiate(wasmBuf) {
-
- var rtenvProps = {
- engine: this,
- ENV: {},
- };
- if (typeof stdout === 'function')
- rtenvProps.print = stdout;
- if (typeof stderr === 'function')
- rtenvProps.printErr = stderr;
- rtenvProps.instantiateWasm = function(imports, onSuccess) {
- WebAssembly.instantiate(wasmBuf, imports).then(function(result) {
- onSuccess(result.instance);
- });
- return {};
- };
-
- return new Promise(function(resolve, reject) {
- rtenvProps.onRuntimeInitialized = resolve;
- rtenvProps.onAbort = reject;
- rtenvProps.thisProgram = executableName;
- rtenvProps.engine.rtenv = Engine.RuntimeEnvironment(rtenvProps, LIBS);
- });
- }
-
- this.preloadFile = function(pathOrBuffer, destPath) {
-
- if (pathOrBuffer instanceof ArrayBuffer) {
- pathOrBuffer = new Uint8Array(pathOrBuffer);
- } else if (ArrayBuffer.isView(pathOrBuffer)) {
- pathOrBuffer = new Uint8Array(pathOrBuffer.buffer);
- }
- if (pathOrBuffer instanceof Uint8Array) {
- preloadedFiles.push({
- path: destPath,
- buffer: pathOrBuffer
- });
- return Promise.resolve();
- } else if (typeof pathOrBuffer === 'string') {
- return loadPromise(pathOrBuffer, preloadProgressTracker).then(function(xhr) {
- preloadedFiles.push({
- path: destPath || pathOrBuffer,
- buffer: xhr.response
- });
- });
- } else {
- throw Promise.reject("Invalid object for preloading");
- }
- };
-
- this.start = function() {
-
- return this.init().then(
- Function.prototype.apply.bind(synchronousStart, this, arguments)
- );
- };
-
- this.startGame = function(execName, mainPack) {
-
- executableName = execName;
- var mainArgs = [ '--main-pack', getPathLeaf(mainPack) ];
-
- return Promise.all([
- this.init(getBasePath(execName)),
- this.preloadFile(mainPack, getPathLeaf(mainPack))
- ]).then(
- Function.prototype.apply.bind(synchronousStart, this, mainArgs)
- );
- };
-
- function synchronousStart() {
-
- if (canvas instanceof HTMLCanvasElement) {
- this.rtenv.canvas = canvas;
- } else {
- var firstCanvas = document.getElementsByTagName('canvas')[0];
- if (firstCanvas instanceof HTMLCanvasElement) {
- this.rtenv.canvas = firstCanvas;
- } else {
- throw new Error("No canvas found");
- }
- }
-
- var actualCanvas = this.rtenv.canvas;
- // canvas can grab focus on click
- if (actualCanvas.tabIndex < 0) {
- actualCanvas.tabIndex = 0;
- }
- // necessary to calculate cursor coordinates correctly
- actualCanvas.style.padding = 0;
- actualCanvas.style.borderWidth = 0;
- actualCanvas.style.borderStyle = 'none';
- // disable right-click context menu
- actualCanvas.addEventListener('contextmenu', function(ev) {
- ev.preventDefault();
- }, false);
- // until context restoration is implemented
- actualCanvas.addEventListener('webglcontextlost', function(ev) {
- alert("WebGL context lost, please reload the page");
- ev.preventDefault();
- }, false);
-
- if (locale) {
- this.rtenv.locale = locale;
- } else {
- this.rtenv.locale = navigator.languages ? navigator.languages[0] : navigator.language;
- }
- this.rtenv.locale = this.rtenv.locale.split('.')[0];
- this.rtenv.resizeCanvasOnStart = resizeCanvasOnStart;
-
- preloadedFiles.forEach(function(file) {
- var dir = LIBS.PATH.dirname(file.path);
- try {
- LIBS.FS.stat(dir);
- } catch (e) {
- if (e.code !== 'ENOENT') {
- throw e;
- }
- LIBS.FS.mkdirTree(dir);
- }
- // With memory growth, canOwn should be false.
- LIBS.FS.createDataFile(file.path, null, new Uint8Array(file.buffer), true, true, false);
- }, this);
-
- preloadedFiles = null;
- initPromise = null;
- this.rtenv.callMain(arguments);
- }
-
- this.setProgressFunc = function(func) {
- progressFunc = func;
- };
-
- this.setResizeCanvasOnStart = function(enabled) {
- resizeCanvasOnStart = enabled;
- };
-
- function animateProgress() {
-
- var loaded = 0;
- var total = 0;
- var totalIsValid = true;
- var progressIsFinal = true;
-
- [loadingFiles, preloadProgressTracker].forEach(function(tracker) {
- Object.keys(tracker).forEach(function(file) {
- if (!tracker[file].final)
- progressIsFinal = false;
- if (!totalIsValid || tracker[file].total === 0) {
- totalIsValid = false;
- total = 0;
- } else {
- total += tracker[file].total;
- }
- loaded += tracker[file].loaded;
- });
- });
- if (loaded !== lastProgress.loaded || total !== lastProgress.total) {
- lastProgress.loaded = loaded;
- lastProgress.total = total;
- if (typeof progressFunc === 'function')
- progressFunc(loaded, total);
- }
- if (!progressIsFinal)
- requestAnimationFrame(animateProgress);
- }
-
- this.setCanvas = function(elem) {
- canvas = elem;
- };
-
- this.setExecutableName = function(newName) {
-
- executableName = newName;
- };
-
- this.setLocale = function(newLocale) {
-
- locale = newLocale;
- };
-
- this.setUnloadAfterInit = function(enabled) {
-
- if (enabled && !unloadAfterInit && initPromise) {
- initPromise.then(Engine.unloadEngine);
- }
- unloadAfterInit = enabled;
- };
-
- this.setStdoutFunc = function(func) {
-
- var print = function(text) {
- if (arguments.length > 1) {
- text = Array.prototype.slice.call(arguments).join(" ");
- }
- func(text);
- };
- if (this.rtenv)
- this.rtenv.print = print;
- stdout = print;
- };
-
- this.setStderrFunc = function(func) {
-
- var printErr = function(text) {
- if (arguments.length > 1)
- text = Array.prototype.slice.call(arguments).join(" ");
- func(text);
- };
- if (this.rtenv)
- this.rtenv.printErr = printErr;
- stderr = printErr;
- };
-
-
- }; // Engine()
-
- Engine.RuntimeEnvironment = engine.RuntimeEnvironment;
-
- Engine.isWebGLAvailable = function(majorVersion = 1) {
-
- var testContext = false;
- try {
- var testCanvas = document.createElement('canvas');
- if (majorVersion === 1) {
- testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
- } else if (majorVersion === 2) {
- testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
- }
- } catch (e) {}
- return !!testContext;
- };
-
- Engine.setWebAssemblyFilenameExtension = function(override) {
-
- if (String(override).length === 0) {
- throw new Error('Invalid WebAssembly filename extension override');
- }
- wasmFilenameExtensionOverride = String(override);
- }
-
- Engine.load = function(newBasePath) {
-
- if (newBasePath !== undefined) basePath = getBasePath(newBasePath);
- if (engineLoadPromise === null) {
- if (typeof WebAssembly !== 'object')
- return Promise.reject(new Error("Browser doesn't support WebAssembly"));
- // TODO cache/retrieve module to/from idb
- engineLoadPromise = loadPromise(basePath + '.' + (wasmFilenameExtensionOverride || 'wasm')).then(function(xhr) {
- return xhr.response;
- });
- engineLoadPromise = engineLoadPromise.catch(function(err) {
- engineLoadPromise = null;
- throw err;
- });
- }
- return engineLoadPromise;
- };
-
- Engine.unload = function() {
- engineLoadPromise = null;
- };
-
- function loadPromise(file, tracker) {
- if (tracker === undefined)
- tracker = loadingFiles;
- return new Promise(function(resolve, reject) {
- loadXHR(resolve, reject, file, tracker);
- });
- }
-
- function loadXHR(resolve, reject, file, tracker) {
-
- var xhr = new XMLHttpRequest;
- xhr.open('GET', file);
- if (!file.endsWith('.js')) {
- xhr.responseType = 'arraybuffer';
- }
- ['loadstart', 'progress', 'load', 'error', 'abort'].forEach(function(ev) {
- xhr.addEventListener(ev, onXHREvent.bind(xhr, resolve, reject, file, tracker));
- });
- xhr.send();
- }
-
- function onXHREvent(resolve, reject, file, tracker, ev) {
-
- if (this.status >= 400) {
-
- if (this.status < 500 || ++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
- reject(new Error("Failed loading file '" + file + "': " + this.statusText));
- this.abort();
- return;
- } else {
- setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
- }
- }
-
- switch (ev.type) {
- case 'loadstart':
- if (tracker[file] === undefined) {
- tracker[file] = {
- total: ev.total,
- loaded: ev.loaded,
- attempts: 0,
- final: false,
- };
- }
- break;
-
- case 'progress':
- tracker[file].loaded = ev.loaded;
- tracker[file].total = ev.total;
- break;
-
- case 'load':
- tracker[file].final = true;
- resolve(this);
- break;
-
- case 'error':
- if (++tracker[file].attempts >= DOWNLOAD_ATTEMPTS_MAX) {
- tracker[file].final = true;
- reject(new Error("Failed loading file '" + file + "'"));
- } else {
- setTimeout(loadXHR.bind(null, resolve, reject, file, tracker), 1000);
- }
- break;
-
- case 'abort':
- tracker[file].final = true;
- reject(new Error("Loading file '" + file + "' was aborted."));
- break;
- }
- }
-})();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 17:42:16 +0000