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var Module; | ||
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if (typeof Module === 'undefined') Module = eval('(function() { try { return Module || {} } catch(e) { return {} } })()'); | ||
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if (!Module.expectedDataFileDownloads) { | ||
Module.expectedDataFileDownloads = 0; | ||
Module.finishedDataFileDownloads = 0; | ||
} | ||
Module.expectedDataFileDownloads++; | ||
(function() { | ||
var loadPackage = function(metadata) { | ||
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var PACKAGE_PATH; | ||
if (typeof window === 'object') { | ||
PACKAGE_PATH = window['encodeURIComponent'](window.location.pathname.toString().substring(0, window.location.pathname.toString().lastIndexOf('/')) + '/'); | ||
} else if (typeof location !== 'undefined') { | ||
// worker | ||
PACKAGE_PATH = encodeURIComponent(location.pathname.toString().substring(0, location.pathname.toString().lastIndexOf('/')) + '/'); | ||
} else { | ||
throw 'using preloaded data can only be done on a web page or in a web worker'; | ||
} | ||
var PACKAGE_NAME = 'game.data'; | ||
var REMOTE_PACKAGE_BASE = 'game.data'; | ||
if (typeof Module['locateFilePackage'] === 'function' && !Module['locateFile']) { | ||
Module['locateFile'] = Module['locateFilePackage']; | ||
Module.printErr('warning: you defined Module.locateFilePackage, that has been renamed to Module.locateFile (using your locateFilePackage for now)'); | ||
} | ||
var REMOTE_PACKAGE_NAME = typeof Module['locateFile'] === 'function' ? | ||
Module['locateFile'](REMOTE_PACKAGE_BASE) : | ||
((Module['filePackagePrefixURL'] || '') + REMOTE_PACKAGE_BASE); | ||
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var REMOTE_PACKAGE_SIZE = metadata.remote_package_size; | ||
var PACKAGE_UUID = metadata.package_uuid; | ||
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function fetchRemotePackage(packageName, packageSize, callback, errback) { | ||
var xhr = new XMLHttpRequest(); | ||
xhr.open('GET', packageName, true); | ||
xhr.responseType = 'arraybuffer'; | ||
xhr.onprogress = function(event) { | ||
var url = packageName; | ||
var size = packageSize; | ||
if (event.total) size = event.total; | ||
if (event.loaded) { | ||
if (!xhr.addedTotal) { | ||
xhr.addedTotal = true; | ||
if (!Module.dataFileDownloads) Module.dataFileDownloads = {}; | ||
Module.dataFileDownloads[url] = { | ||
loaded: event.loaded, | ||
total: size | ||
}; | ||
} else { | ||
Module.dataFileDownloads[url].loaded = event.loaded; | ||
} | ||
var total = 0; | ||
var loaded = 0; | ||
var num = 0; | ||
for (var download in Module.dataFileDownloads) { | ||
var data = Module.dataFileDownloads[download]; | ||
total += data.total; | ||
loaded += data.loaded; | ||
num++; | ||
} | ||
total = Math.ceil(total * Module.expectedDataFileDownloads/num); | ||
if (Module['setStatus']) Module['setStatus']('Downloading data... (' + loaded + '/' + total + ')'); | ||
} else if (!Module.dataFileDownloads) { | ||
if (Module['setStatus']) Module['setStatus']('Downloading data...'); | ||
} | ||
}; | ||
xhr.onerror = function(event) { | ||
throw new Error("NetworkError for: " + packageName); | ||
} | ||
xhr.onload = function(event) { | ||
if (xhr.status == 200 || xhr.status == 304 || xhr.status == 206 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0 | ||
var packageData = xhr.response; | ||
callback(packageData); | ||
} else { | ||
throw new Error(xhr.statusText + " : " + xhr.responseURL); | ||
} | ||
}; | ||
xhr.send(null); | ||
}; | ||
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function handleError(error) { | ||
console.error('package error:', error); | ||
}; | ||
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function runWithFS() { | ||
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function assert(check, msg) { | ||
if (!check) throw msg + new Error().stack; | ||
} | ||
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function DataRequest(start, end, crunched, audio) { | ||
this.start = start; | ||
this.end = end; | ||
this.crunched = crunched; | ||
this.audio = audio; | ||
} | ||
DataRequest.prototype = { | ||
requests: {}, | ||
open: function(mode, name) { | ||
this.name = name; | ||
this.requests[name] = this; | ||
Module['addRunDependency']('fp ' + this.name); | ||
}, | ||
send: function() {}, | ||
onload: function() { | ||
var byteArray = this.byteArray.subarray(this.start, this.end); | ||
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this.finish(byteArray); | ||
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}, | ||
finish: function(byteArray) { | ||
var that = this; | ||
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Module['FS_createDataFile'](this.name, null, byteArray, true, true, true); // canOwn this data in the filesystem, it is a slide into the heap that will never change | ||
Module['removeRunDependency']('fp ' + that.name); | ||
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this.requests[this.name] = null; | ||
} | ||
}; | ||
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var files = metadata.files; | ||
for (i = 0; i < files.length; ++i) { | ||
new DataRequest(files[i].start, files[i].end, files[i].crunched, files[i].audio).open('GET', files[i].filename); | ||
} | ||
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var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB; | ||
var IDB_RO = "readonly"; | ||
var IDB_RW = "readwrite"; | ||
var DB_NAME = "EM_PRELOAD_CACHE"; | ||
var DB_VERSION = 1; | ||
var METADATA_STORE_NAME = 'METADATA'; | ||
var PACKAGE_STORE_NAME = 'PACKAGES'; | ||
function openDatabase(callback, errback) { | ||
try { | ||
var openRequest = indexedDB.open(DB_NAME, DB_VERSION); | ||
} catch (e) { | ||
return errback(e); | ||
} | ||
openRequest.onupgradeneeded = function(event) { | ||
var db = event.target.result; | ||
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if(db.objectStoreNames.contains(PACKAGE_STORE_NAME)) { | ||
db.deleteObjectStore(PACKAGE_STORE_NAME); | ||
} | ||
var packages = db.createObjectStore(PACKAGE_STORE_NAME); | ||
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if(db.objectStoreNames.contains(METADATA_STORE_NAME)) { | ||
db.deleteObjectStore(METADATA_STORE_NAME); | ||
} | ||
var metadata = db.createObjectStore(METADATA_STORE_NAME); | ||
}; | ||
openRequest.onsuccess = function(event) { | ||
var db = event.target.result; | ||
callback(db); | ||
}; | ||
openRequest.onerror = function(error) { | ||
errback(error); | ||
}; | ||
}; | ||
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/* Check if there's a cached package, and if so whether it's the latest available */ | ||
function checkCachedPackage(db, packageName, callback, errback) { | ||
var transaction = db.transaction([METADATA_STORE_NAME], IDB_RO); | ||
var metadata = transaction.objectStore(METADATA_STORE_NAME); | ||
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var getRequest = metadata.get("metadata/" + packageName); | ||
getRequest.onsuccess = function(event) { | ||
var result = event.target.result; | ||
if (!result) { | ||
return callback(false); | ||
} else { | ||
return callback(PACKAGE_UUID === result.uuid); | ||
} | ||
}; | ||
getRequest.onerror = function(error) { | ||
errback(error); | ||
}; | ||
}; | ||
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function fetchCachedPackage(db, packageName, callback, errback) { | ||
var transaction = db.transaction([PACKAGE_STORE_NAME], IDB_RO); | ||
var packages = transaction.objectStore(PACKAGE_STORE_NAME); | ||
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var getRequest = packages.get("package/" + packageName); | ||
getRequest.onsuccess = function(event) { | ||
var result = event.target.result; | ||
callback(result); | ||
}; | ||
getRequest.onerror = function(error) { | ||
errback(error); | ||
}; | ||
}; | ||
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function cacheRemotePackage(db, packageName, packageData, packageMeta, callback, errback) { | ||
var transaction_packages = db.transaction([PACKAGE_STORE_NAME], IDB_RW); | ||
var packages = transaction_packages.objectStore(PACKAGE_STORE_NAME); | ||
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var putPackageRequest = packages.put(packageData, "package/" + packageName); | ||
putPackageRequest.onsuccess = function(event) { | ||
var transaction_metadata = db.transaction([METADATA_STORE_NAME], IDB_RW); | ||
var metadata = transaction_metadata.objectStore(METADATA_STORE_NAME); | ||
var putMetadataRequest = metadata.put(packageMeta, "metadata/" + packageName); | ||
putMetadataRequest.onsuccess = function(event) { | ||
callback(packageData); | ||
}; | ||
putMetadataRequest.onerror = function(error) { | ||
errback(error); | ||
}; | ||
}; | ||
putPackageRequest.onerror = function(error) { | ||
errback(error); | ||
}; | ||
}; | ||
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function processPackageData(arrayBuffer) { | ||
Module.finishedDataFileDownloads++; | ||
assert(arrayBuffer, 'Loading data file failed.'); | ||
assert(arrayBuffer instanceof ArrayBuffer, 'bad input to processPackageData'); | ||
var byteArray = new Uint8Array(arrayBuffer); | ||
var curr; | ||
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// copy the entire loaded file into a spot in the heap. Files will refer to slices in that. They cannot be freed though | ||
// (we may be allocating before malloc is ready, during startup). | ||
if (Module['SPLIT_MEMORY']) Module.printErr('warning: you should run the file packager with --no-heap-copy when SPLIT_MEMORY is used, otherwise copying into the heap may fail due to the splitting'); | ||
var ptr = Module['getMemory'](byteArray.length); | ||
Module['HEAPU8'].set(byteArray, ptr); | ||
DataRequest.prototype.byteArray = Module['HEAPU8'].subarray(ptr, ptr+byteArray.length); | ||
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var files = metadata.files; | ||
for (i = 0; i < files.length; ++i) { | ||
DataRequest.prototype.requests[files[i].filename].onload(); | ||
} | ||
Module['removeRunDependency']('datafile_game.data'); | ||
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}; | ||
Module['addRunDependency']('datafile_game.data'); | ||
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if (!Module.preloadResults) Module.preloadResults = {}; | ||
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function preloadFallback(error) { | ||
console.error(error); | ||
console.error('falling back to default preload behavior'); | ||
fetchRemotePackage(REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE, processPackageData, handleError); | ||
}; | ||
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openDatabase( | ||
function(db) { | ||
checkCachedPackage(db, PACKAGE_PATH + PACKAGE_NAME, | ||
function(useCached) { | ||
Module.preloadResults[PACKAGE_NAME] = {fromCache: useCached}; | ||
if (useCached) { | ||
console.info('loading ' + PACKAGE_NAME + ' from cache'); | ||
fetchCachedPackage(db, PACKAGE_PATH + PACKAGE_NAME, processPackageData, preloadFallback); | ||
} else { | ||
console.info('loading ' + PACKAGE_NAME + ' from remote'); | ||
fetchRemotePackage(REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE, | ||
function(packageData) { | ||
cacheRemotePackage(db, PACKAGE_PATH + PACKAGE_NAME, packageData, {uuid:PACKAGE_UUID}, processPackageData, | ||
function(error) { | ||
console.error(error); | ||
processPackageData(packageData); | ||
}); | ||
} | ||
, preloadFallback); | ||
} | ||
} | ||
, preloadFallback); | ||
} | ||
, preloadFallback); | ||
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if (Module['setStatus']) Module['setStatus']('Downloading...'); | ||
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} | ||
if (Module['calledRun']) { | ||
runWithFS(); | ||
} else { | ||
if (!Module['preRun']) Module['preRun'] = []; | ||
Module["preRun"].push(runWithFS); // FS is not initialized yet, wait for it | ||
} | ||
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} | ||
loadPackage({"package_uuid":"80826f15-f924-4428-a8c4-e984743417c6","remote_package_size":62246034,"files":[{"filename":"/game.love","crunched":0,"start":0,"end":62246034,"audio":false}]}); | ||
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})(); |
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