106 lines
1.8 KiB
JavaScript
106 lines
1.8 KiB
JavaScript
function Session(async) {
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var session = {
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character: JSON.parse(localStorage.getItem('character')),
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game: JSON.parse(localStorage.getItem('game')),
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options: JSON.parse(localStorage.getItem('options')) || defaultOptions()
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};
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return {
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get: get,
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set: set,
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syncGame: syncGame,
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update: update
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};
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function defaultOptions() {
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var o = {
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layout: {
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'a': 'A',
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'b': 'B',
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'ArrowLeft': 'Left',
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'ArrowRight': 'Right',
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'ArrowUp': 'Up',
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'ArrowDown': 'Down',
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'Enter': 'Start',
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' ': 'Select'
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},
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textSpeed: 'medium'
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};
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save('options', o);
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return o;
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}
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function get(path, obj) {
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obj = obj || session;
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if(Array.isArray(path)) {
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if(path.length == 0) {
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return obj;
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} else {
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var key = path.shift();
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return get(path, obj[key]);
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}
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} else {
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return obj[path];
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}
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}
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function save(key, value) {
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if(key != undefined) {
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localStorage.setItem(key, JSON.stringify(value || session[key]));
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} else {
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for(var key in session) {
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save(key);
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}
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}
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}
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function set(newSession) {
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for(var key in newSession) {
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session[key] = newSession[key];
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save(key);
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}
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}
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function syncGame() {
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return async.bind(
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messaging.receive(function(message) {
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return message.tag == "Game";
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}),
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function(message) {
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session.game = message.contents;
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return async.wrap();
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}
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);
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}
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function update(newSession) {
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for(var key in newSession) {
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merge(session[key], newSession[key]);
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save(key);
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}
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}
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function merge(a, b) {
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for(var key in b) {
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var value = b[key];
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if(typeof value == "object") {
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if(Array.isArray(value)) {
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a[key] = [];
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for(var i = 0; i < value.length; i++) {
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a[key][i] = value[i];
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}
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} else {
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merge(a[key], value);
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}
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} else {
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if(value !== undefined) {
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a[key] = value;
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} else {
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delete a[key];
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}
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}
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}
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}
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}
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