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<!doctype html> |
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<html> |
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<head></head> |
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<body> |
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<h1>Proof Of Concept : a simple MAME loader</h1> |
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<div id="loading">Loading game, please wait !</div> |
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<div class="container"> |
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<canvas id="display" style="width:320px;height:224px" width="320" height="224"></canvas> |
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</div> |
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<script> |
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// legacy, must be define |
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var JSMESS = JSMESS || {}; |
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JSMESS.ready = function (f) { f(); }; |
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var game = { |
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files : { |
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//'snowbros.zip': '../emulators/roms/snowbros.zip', |
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//'twincobr.zip': '../emulators/roms/twincobr.zip', |
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//'bublbobl.zip': '../emulators/bublbobl.zip', |
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//'shinobi.zip': '../emulators/roms/shinobi.zip', |
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//'sf2.zip' : '../emulators/roms/sf2.zip', |
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//'ghouls.zip' : '../emulators/cps1/ghouls.zip', |
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//'outrun.zip' : '../emulators/outrun/outrun.zip', |
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//'outrun.cfg' : '../emulators/outrun/outrun.cfg', |
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'outrun.zip': 'https://cors.archive.org/cors/arcade_outrun/outrun.zip', |
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}, |
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driver: 'outrun', |
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emulator: 'https://rawgit.com/mamejs/mamejs-emulators/master/mamejs-serie1.js', |
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resolution: { |
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width: 320, |
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height: 224 |
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} |
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} |
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var canvas = document.getElementById('display') |
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function fetchFile(url) { |
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return new Promise(function (resolve, reject) { |
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let xhr = new XMLHttpRequest(); |
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xhr.open('GET', url, true); |
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xhr.responseType = 'arraybuffer'; |
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let errorMsg = 'error loading ' + url |
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xhr.onload = function (e) { |
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if (xhr.status === 200) { |
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resolve(xhr.response); |
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} else { |
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reject(errorMsg + ' : status code ' + xhr.status); |
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} |
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} |
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xhr.onerror = function (e) { |
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reject(errorMsg + ' : ' + e.toString()); |
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}; |
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xhr.send(); |
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}); |
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} |
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// Fetch all game files |
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Promise.all(Object.keys(game.files).map(function(romName) { |
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return fetchFile(game.files[romName]).then(function(arrayBuffer) { |
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return { |
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rom: romName, |
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data: arrayBuffer |
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} |
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}) |
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})).then(function(data) { // Promise.all will return an array of {rom: string, data: ArrayBuffer} |
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// MAME Module for emscripten |
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window.Module = { |
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arguments: [ |
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game.driver, |
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'-verbose', |
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'-rompath', |
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'/roms', |
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'-resolution', |
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game.resolution.width + 'x' + game.resolution.height, |
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'-samplerate', |
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'48000', |
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// '-sound', |
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// 'none', |
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], |
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screenIsReadOnly: true, |
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print: function (text) { |
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console.log('MAME - ' + text); |
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}, |
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canvas: display, |
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noInitialRun: false, |
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preInit: function () { |
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// create and mount FS into /roms folder |
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FS.mkdir('/roms'); |
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FS.mount(MEMFS, {root: '/'}, '/roms'); |
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// write all game files into the /roms folder |
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data.forEach(function(file) { |
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FS.writeFile('/roms/' + file.rom, new Uint8Array(file.data), { |
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encoding: 'binary' |
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}) |
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}) |
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} |
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} |
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var script = document.createElement('script'); |
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script.type = 'text/javascript'; |
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script.onload = Promise.resolve |
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script.onerror = Promise.reject |
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script.src = game.emulator; |
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document.getElementsByTagName('head')[0].appendChild(script); |
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}).then(function() { |
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document.getElementById('loading').style.display = 'none' |
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}).catch(function(error) { |
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document.getElementById('loading').innerHTML = 'error : ' + error |
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}) |
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</script> |
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</body> |
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</html> |
