var LibraryHUMBLE = {
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$HUMBLE_API: {
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options: {
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/**
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* allows altering the incoming URL before it is fetched from the network
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* ex. function(path) { return path; }
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*/
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locateAsset: null,
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/**
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* returns a key for the specified path. return null to NOT cache the specific resource
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* for scoped keys.. return { scope: 'deadbeef', path: 'path' }, otherwise just return a string
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* ex. function(path) { return path; }
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*/
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buildCacheKey: null,
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/**
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* function returning a hash like {width: 800, height: 600, locked: true}
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* locked specifies whether the game should use that width/height.
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* ex. function() { return { width: 800, height: 600, locked: true } }
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*/
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playerSize: null,
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/**
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* callback to handle the demo_ended API from in the game
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* the callback takes no parameters.
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*/
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demoEndedCallback: null
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},
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/**
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* allows configuring the HUMBLE_API simply call this method in a preRun to initialize..
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* any option is accepted and will be added to the configuration hash.
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* Also all hooks will be context of HUMBLE_API so this.options.myCustomKey will be accessible
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*/
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configure: function(options) {
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for (var i in options) {
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HUMBLE_API.options[i] = options[i];
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}
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},
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locateAsset: function(path) {
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if (HUMBLE_API.options.locateAsset) {
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return HUMBLE_API.options.locateAsset.call(HUMBLE_API, path);
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} else {
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return path;
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}
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},
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buildCacheKey: function(path) {
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if (HUMBLE_API.options.buildCacheKey) {
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return HUMBLE_API.options.buildCacheKey.call(HUMBLE_API, path);
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} else {
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return null;
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}
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},
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pathToKey: function(path) {
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if (typeof path == 'string') {
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return { path: path, scope: '', key: ':' + path};
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} else {
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return { path: path.path, scope: path.scope, key: path.scope + ':' + path.path };
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}
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},
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// deletes all entries for the specified scope
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clearCacheByScope: function(scope, oncomplete) {
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HUMBLE_API.getDB(function(err, db) {
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if (err) return oncomplete(err);
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var transaction = db.transaction([HUMBLE_API.DB_ASYNC_CACHE_STORE], 'readwrite');
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transaction.onerror = function() { oncomplete(this.error); };
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var store = transaction.objectStore(HUMBLE_API.DB_ASYNC_CACHE_STORE);
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var index = store.index('scope');
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index.openKeyCursor(IDBKeyRange.only(scope)).onsuccess = function(e) {
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var cursor = event.target.result;
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if (cursor) {
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store.delete(cursor.primaryKey);
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cursor.continue();
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} else {
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oncomplete(null);
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}
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};
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});
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},
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storeToCache: function(path, byteArray, ondone) {
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if (path === null) {
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return ondone(null);
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}
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HUMBLE_API.getDB(function(err, db) {
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if (err) return ondone(err);
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var transaction = db.transaction([HUMBLE_API.DB_ASYNC_CACHE_STORE], 'readwrite');
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transaction.onerror = function() { ondone(this.error); };
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var store = transaction.objectStore(HUMBLE_API.DB_ASYNC_CACHE_STORE);
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var data = HUMBLE_API.pathToKey(path);
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data['data'] = byteArray;
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var req = store.put(data);
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req.onsuccess = function(e) {
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ondone(null);
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};
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req.onerror = function() { ondone(this.error); };
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});
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},
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fetchFromCache: function(path, ondone, onfail) {
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if (path === null) {
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return onfail(null);
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}
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HUMBLE_API.getDB(function(err, db) {
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if (err) return onfail(err);
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var transaction = db.transaction([HUMBLE_API.DB_ASYNC_CACHE_STORE], 'readonly');
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transaction.onerror = function() { onfail(this.error); };
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var store = transaction.objectStore(HUMBLE_API.DB_ASYNC_CACHE_STORE);
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var data = HUMBLE_API.pathToKey(path);
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var req = store.get(data.key);
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req.onsuccess = function(e) {
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if (e.target.result) {
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var o = e.target.result;
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ondone(o.data);
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} else {
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onfail(null);
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}
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};
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req.onerror = function() { onfail(this.error); };
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});
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},
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/* indexedDB access */
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// borrowed from IDBFS
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dbs: {},
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indexedDB: function() {
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if (typeof indexedDB !== 'undefined') return indexedDB;
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var ret = null;
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if (typeof window === 'object') ret = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
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assert(ret, 'IDBFS used, but indexedDB not supported');
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return ret;
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},
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DB_VERSION: 1,
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DB_NAME: 'HUMBLE_API',
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DB_ASYNC_CACHE_STORE: 'HUMBLE_API_ASYNC',
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getDB: function(callback) {
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var db = HUMBLE_API.dbs[HUMBLE_API.DB_NAME];
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if (db) {
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return callback(null, db);
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}
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var req;
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try {
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req = HUMBLE_API.indexedDB().open(HUMBLE_API.DB_NAME, HUMBLE_API.DB_VERSION)
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} catch (e) {
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return callback(e);
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}
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req.onupgradeneeded = function(e) {
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var db = e.target.result;
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var fileStore;
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// Just replace it for now
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fileStore = db.createObjectStore(HUMBLE_API.DB_ASYNC_CACHE_STORE, {keyPath: 'key'});
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fileStore.createIndex('scope','scope',{ unique: false });
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};
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req.onsuccess = function() {
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db = req.result;
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HUMBLE_API.dbs[HUMBLE_API.DB_NAME] = db;
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callback(null, db);
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};
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req.onerror = function() {
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callback(this.error);
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};
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}
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},
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humble_init__deps: ['$CLOUDFS','$HUMBLE_API'],
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humble_init: function() {
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// Dummy function to pull in the rest of the functions
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},
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humble_sync__deps: ['$FS', '$CLOUDFS','$HUMBLE_API'],
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humble_sync: function() {
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FS.syncfs(function (err) {
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console.log('File Sync');
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});
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},
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humble_fetch_asset_data__deps: ['$BROWSER','$HUMBLE_API'],
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humble_fetch_asset_data: function(assetPath, arg, onload, onerror) {
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var path = Pointer_stringify(assetPath);
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var cacheKey = HUMBLE_API.buildCacheKey(path);
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HUMBLE_API.fetchFromCache(cacheKey, function(byteArray) {
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var buffer = _malloc(byteArray.length);
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HEAPU8.set(byteArray, buffer);
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Runtime.dynCall('viii', onload, [arg, buffer, byteArray.length]);
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_free(buffer);
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}, function(err) {
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try {
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var url = HUMBLE_API.locateAsset(path);
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Browser.asyncLoad(url, function (byteArray) {
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HUMBLE_API.storeToCache(cacheKey, byteArray, function (err) {
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var buffer = _malloc(byteArray.length);
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HEAPU8.set(byteArray, buffer);
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Runtime.dynCall('viii', onload, [arg, buffer, byteArray.length]);
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_free(buffer);
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});
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}, function() {
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if (onerror) Runtime.dynCall('vi', onerror, [arg]);
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}, true /* NO run dependency */);
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} catch(ex) {
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if (onerror) Runtime.dynCall('vi', onerror, [arg]);
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}
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});
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},
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humble_get_player_size: function(w, h) {
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var ret = {width: 0, height: 0, locked: false};
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if (HUMBLE_API.options.playerSize) {
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ret = HUMBLE_API.options.playerSize();
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}
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if (w) {{{ makeSetValue('w', '0', 'ret.width', 'i32') }}};
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if (h) {{{ makeSetValue('h', '0', 'ret.height', 'i32') }}};
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return ret.locked ? 1 : 0;
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},
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humble_demo_ended: function() {
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if (HUMBLE_API.options.demoEndedCallback) {
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return HUMBLE_API.options.demoEndedCallback.call(HUMBLE_API);
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}
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}
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};
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autoAddDeps(LibraryHUMBLE, '$HUMBLE_API');
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mergeInto(LibraryManager.library, LibraryHUMBLE);
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