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loader.js
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/** The Emularity; easily embed emulators
* Copyright © 2014-2016 Daniel Brooks <[email protected]>, Jason
* Scott <[email protected]>, Grant Galitz <[email protected]>,
* John Vilk <[email protected]>, and Tracey Jaquith <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
var Module = null;
(function (Promise) {
/**
* IALoader
*/
function IALoader(canvas, game, callbacks, scale) {
// IA actually gives us an object here, and we really ought to be
// looking things up from it instead.
if (typeof game !== 'string') {
game = game.toString();
}
if (!callbacks || typeof callbacks !== 'object') {
callbacks = { before_emulator: updateLogo,
before_run: callbacks };
} else {
if (typeof callbacks.before_emulator === 'function') {
var func = callbacks.before_emulator;
callbacks.before_emulator = function () {
updateLogo();
func();
};
} else {
callbacks.before_emulator = updateLogo;
}
}
function img(src) {
var img = new Image();
img.src = src;
return img;
}
// yea, this is a hack
var images;
if (/archive\.org$/.test(document.location.hostname)) {
images = { ia: img("/images/ialogo.png"),
mame: img("/images/mame.png"),
mess: img("/images/mame.png"),
dosbox: img("/images/dosbox.png"),
sae: img("/images/sae.png"),
pce: img("/images/pce.png"),
vice: img("/images/vice.svg"),
np2: img("/images/nekop2.gif"),
xmil: img("/images/xmillenium_logo.jpg"),
vmac: img("/images/vmac.png"),
};
} else {
images = { ia: img("other_logos/ia-logo-150x150.png"),
mame: img("other_logos/mame.png"),
mess: img("other_logos/mame.png"),
dosbox: img("other_logos/dosbox.png"),
sae: img("other_logos/sae.png"),
pce: img("other_logos/pce.png"),
vice: img("other_logos/vice.svg"),
np2: img("other_logos/nekop2.gif"),
xmil: img("other_logos/xmillenium_logo.jpg"),
vmac: img("other_logos/vmac.png"),
};
}
function updateLogo() {
if (emulator_logo) {
emulator.setSplashImage(emulator_logo);
}
}
var SAMPLE_RATE = (function () {
var audio_ctx = window.AudioContext || window.webkitAudioContext || false;
if (!audio_ctx) {
return false;
}
var sample = new audio_ctx;
return sample.sampleRate.toString();
}());
var metadata, filelist, module, modulecfg, config_args, emulator_logo,
emulator = new Emulator(canvas).setSplashImage(images.ia)
.setLoad(loadFiles)
.setCallbacks(callbacks);
var cfgr;
function loadFiles(fetch_file, splash) {
splash.setTitle("Downloading game metadata...");
return new Promise(function (resolve, reject) {
var loading = fetch_file('Game Metadata',
get_meta_url(game),
'document');
loading.then(function (data) {
metadata = data;
splash.setTitle("Downloading game filelist...");
return fetch_file('Game File List',
get_files_url(game),
'document', true);
},
function () {
splash.setTitle("Failed to download IA item metadata!");
splash.failed_loading = true;
reject(1);
})
.then(function (data) {
if (splash.failed_loading) {
return null;
}
filelist = data;
splash.setTitle("Downloading emulator metadata...");
module = metadata.getElementsByTagName("emulator")
.item(0)
.textContent;
return fetch_file('Emulator Metadata',
get_emulator_config_url(module),
'text', true);
},
function () {
if (splash.failed_loading) {
return;
}
splash.setTitle("Failed to download file list!");
splash.failed_loading = true;
reject(2);
})
.then(function (data) {
if (splash.failed_loading) {
return null;
}
modulecfg = JSON.parse(data);
var get_files;
if (module && module.indexOf("dosbox") === 0) {
emulator_logo = images.dosbox;
cfgr = DosBoxLoader;
get_files = get_dosbox_files;
}
else if (module && module.indexOf("sae-") === 0) {
emulator_logo = images.sae;
cfgr = SAELoader;
get_files = get_sae_files;
}
else if (module && module.indexOf("pce-") === 0) {
emulator_logo = images.pce;
cfgr = PCELoader;
get_files = get_pce_files;
}
else if (module && module.indexOf("vice") === 0) {
emulator_logo = images.vice;
cfgr = VICELoader;
get_files = get_vice_files;
}
else if (module && module.indexOf("np2-") === 0) {
emulator_logo = images.np2;
cfgr = NP2Loader;
get_files = get_np2_files;
}
else if (module && module.indexOf("xmil-") === 0) {
emulator_logo = images.xmil;
cfgr = NP2Loader;
get_files = get_xmil_files;
}
else if (module && module.indexOf("vmac-") === 0) {
emulator_logo = images.vmac;
cfgr = NP2Loader;
get_files = get_vmac_files;
}
else if (module) {
emulator_logo = images.mame;
cfgr = MAMELoader;
get_files = get_mame_files;
}
else {
throw new Error("Unknown module type "+ module +"; cannot configure the emulator.");
}
var wantsWASM = modulecfg.wasm_filename && 'WebAssembly' in window;
var nr = modulecfg['native_resolution'];
config_args = [cfgr.emulatorJS(get_js_url(wantsWASM ? modulecfg.wasmjs_filename : modulecfg.js_filename)),
cfgr.emulatorWASM(wantsWASM && get_js_url(modulecfg.wasm_filename)),
cfgr.locateAdditionalEmulatorJS(locateAdditionalJS),
cfgr.fileSystemKey(game),
cfgr.nativeResolution(nr[0], nr[1]),
cfgr.aspectRatio(nr[0] / nr[1]),
cfgr.scale(scale || modulecfg.scale || 2),
cfgr.sampleRate(SAMPLE_RATE)];
if ('keepAspect' in cfgr) {
config_args.push(cfgr.keepAspect(modulecfg.keepAspect));
}
if (/archive\.org$/.test(document.location.hostname)) {
config_args.push(cfgr.muted(!(typeof $ !== 'undefined' && $.cookie && $.cookie('unmute'))));
}
if (module && module.indexOf("dosbox") === 0) {
config_args.push(cfgr.startExe(metadata.getElementsByTagName("emulator_start")
.item(0)
.textContent));
} else if (module && module.indexOf("vice") === 0) {
let emulator_start_item = metadata.getElementsByTagName("emulator_start").item(0);
let vice_fliplist = [ metadata.getElementsByTagName("vice_drive_8_fliplist").item(0),
metadata.getElementsByTagName("vice_drive_9_fliplist").item(0),
metadata.getElementsByTagName("vice_drive_10_fliplist").item(0),
metadata.getElementsByTagName("vice_drive_11_fliplist").item(0) ];
if (emulator_start_item) {
config_args.push(cfgr.autoLoad(emulator_start_item.textContent));
}
let fliplists = [];
vice_fliplist.forEach(function (fliplist_meta) {
if(!fliplist_meta) {
fliplists.push(null);
} else {
fliplists.push(fliplist_meta.textContent.split(";"));
}
});
config_args.push(cfgr.fliplist(fliplists));
config_args.push(cfgr.extraArgs(modulecfg.extra_args));
} else if (module && module.indexOf("sae-") === 0) {
config_args.push(cfgr.model(modulecfg.driver),
cfgr.rom(modulecfg.bios_filenames));
} else if (module && (module.indexOf("np2-") == 0 ||
module.indexOf("xmil-") == 0 ||
module.indexOf("vmac-") == 0)) {
let emulator_start_item = metadata.getElementsByTagName("emulator_start");
if (!emulator_start_item) {
throw new Exception("Error: this item does not have an 'emulator_start' metadata value; I don't know what to run.");
}
config_args.push(cfgr.autoLoad('/emulator/'+ emulator_start_item.item(0).textContent),
cfgr.extraArgs(modulecfg.extra_args));
} else if (module && module.indexOf("pce-") === 0) {
config_args.push(cfgr.model(modulecfg.driver),
cfgr.extraArgs(modulecfg.extra_args));
} else if (module) { // MAME
config_args.push(cfgr.driver(modulecfg.driver),
cfgr.extraArgs(modulecfg.extra_args));
}
splash.setTitle("Downloading game data...");
return Promise.all(get_files(cfgr, metadata, modulecfg, filelist));
},
function () {
if (splash.failed_loading) {
return;
}
splash.setTitle("Failed to download emulator metadata!");
splash.failed_loading = true;
reject(2);
})
.then(function (game_files) {
if (splash.failed_loading) {
return;
}
updateLogo();
resolve(cfgr.apply(null, extend(config_args, game_files)));
},
function (e) {
if (splash.failed_loading) {
return;
}
splash.setTitle("Failed to configure emulator!");
splash.failed_loading = true;
reject(3);
});
});
}
function locateAdditionalJS(filename) {
if ("file_locations" in modulecfg && filename in modulecfg.file_locations) {
return get_js_url(modulecfg.file_locations[filename]);
}
return get_js_url(filename);
}
function get_dosbox_files(cfgr, metadata, modulecfg, filelist) {
var default_drive = "c", // pick any drive letter as a default
drives = {}, files = [],
meta = dict_from_xml(metadata);
if (game && game.endsWith(".zip")) {
drives[default_drive] = game;
}
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
drives[default_drive] = file.name;
});
meta_props_matching(meta, /^dosbox_drive_([a-zA-Z])$/).forEach(function (result) {
let key = result[0], match = result[1];
drives[match[1]] = meta[key];
});
var mounts = Object.keys(drives),
len = mounts.length;
mounts.forEach(function (drive, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
filename = drives[drive],
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
if (filename.toLowerCase().endsWith(".zip")) {
files.push(cfgr.mountZip(drive,
cfgr.fetchFile(title, url)));
} else {
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
}
});
return files;
}
function get_vice_files(cfgr, metadata, modulecfg, filelist) {
var default_drive = "8",
drives = {}, files = [], wanted_files = [],
meta = dict_from_xml(metadata);
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
wanted_files.push(file.name);
});
files_with_ext_from_filelist(filelist, "conf").forEach(function (file, i) {
wanted_files.push(file.name);
});
meta_props_matching(meta, /^vice_drive_([89])$/).forEach(function (result) {
let key = result[0], match = result[1];
drives[match[1]] = meta[key];
});
var len = wanted_files.length;
wanted_files.forEach(function (file, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
filename = file,
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
if (filename.toLowerCase().endsWith(".zip") && false) { // TODO: Enable and fix zip support.
files.push(cfgr.mountZip("", // TODO: This is a hack, no drive actually applicable here
cfgr.fetchFile(title, url)));
} else {
//TODO: ensure vice_drive_8 and vice_drive_9 actually function.
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
}
});
return files;
}
function get_mame_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "Bios File ("+ (i+1) +" of "+ bios_files.length +")";
files.push(cfgr.mountFile('/'+ fname,
cfgr.fetchFile(title,
get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
peripherals = {},
game_files_counter = {};
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
game_files_counter[file.name] = 1;
if (modulecfg.peripherals && modulecfg.peripherals[i]) {
peripherals[modulecfg.peripherals[i]] = file.name;
}
});
meta_props_matching(meta, /^mame_peripheral_([a-zA-Z0-9]+)$/).forEach(function (result) {
let key = result[0], match = result[1];
peripherals[match[1]] = meta[key];
game_files_counter[meta[key]] = 1;
});
var game_files = Object.keys(game_files_counter),
len = game_files.length;
game_files.forEach(function (filename, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
});
Object.keys(peripherals).forEach(function (periph) {
files.push(cfgr.peripheral(periph, // we're not pushing a 'file' here,
peripherals[periph])); // but that's ok
});
files.push(cfgr.mountFile('/'+ modulecfg['driver'] + '.cfg',
cfgr.fetchOptionalFile("CFG File",
get_other_emulator_config_url(module))));
return files;
}
function get_sae_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "Bios File ("+ (i+1) +" of "+ bios_files.length +")";
files.push(cfgr.mountFile('/'+ fname,
cfgr.fetchFile(title,
get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
game_files = files_with_ext_from_filelist(filelist, meta.emulator_ext);
game_files.forEach(function (file, i) {
if (file) {
var title = "Game File ("+ (i+1) +" of "+ game_files.length +")",
url = (file.name.includes("/")) ? get_zip_url(file.name)
: get_zip_url(file.name, get_item_name(game));
files.push(cfgr.mountFile('/'+ file.name,
cfgr.fetchFile(title, url)));
files.push(cfgr.floppy(0, // we're not pushing a file here
file.name)); // but that's ok
}
});
files.push(cfgr.mountFile('/'+ modulecfg['driver'] + '.cfg',
cfgr.fetchOptionalFile("Config File",
get_other_emulator_config_url(module))));
return files;
}
function get_pce_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "ROM File ("+ (i+1) +" of "+ bios_files.length +")";
files.push(cfgr.mountFile('/'+ fname,
cfgr.fetchFile(title,
get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
game_files_counter = {};
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
if (modulecfg.peripherals && modulecfg.peripherals[i]) {
game_files_counter[file.name] = modulecfg.peripherals[i];
}
});
meta_props_matching(meta, /^pce_drive_([a-zA-Z0-9]+)$/).forEach(function (result) {
var key = result[0], periph = result[1][1];
game_files_counter[meta[key]] = periph;
});
var game_files = Object.keys(game_files_counter),
len = game_files.length;
game_files.forEach(function (filename, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
ext = filename.match(/\.([^.]*)$/)[1],
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
files.push(cfgr.mountFile('/'+ game_files_counter[filename] +'.'+ ext,
cfgr.fetchFile(title, url)));
});
files.push(cfgr.mountFile('/pce-'+ modulecfg['driver'] + '.cfg',
cfgr.fetchOptionalFile("Config File",
get_other_emulator_config_url("pce-"+ modulecfg['driver']))));
return files;
}
// TODO(db48x): get_{np2,xmil,vmac}_files are even more
// duplicative than the rest; time to factor this a lot
function get_np2_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "ROM File ("+ (i+1) +" of "+ bios_files.length +")",
mounter = (fname.endsWith(".zip")) ? cfgr.mountZip
: cfgr.mountFile;
files.push(mounter('np2',
cfgr.fetchFile(title, get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
peripherals = {},
game_files_counter = {};
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
game_files_counter[file.name] = 1;
});
var game_files = Object.keys(game_files_counter),
len = game_files.length;
game_files.forEach(function (filename, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
});
return files;
}
function get_xmil_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "ROM File ("+ (i+1) +" of "+ bios_files.length +")",
mounter = (fname.endsWith(".zip")) ? cfgr.mountZip
: cfgr.mountFile;
files.push(mounter('xmil',
cfgr.fetchFile(title, get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
peripherals = {},
game_files_counter = {};
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
game_files_counter[file.name] = 1;
});
var game_files = Object.keys(game_files_counter),
len = game_files.length;
game_files.forEach(function (filename, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
});
return files;
}
function get_vmac_files(cfgr, metadata, modulecfg, filelist) {
var files = [],
bios_files = modulecfg['bios_filenames'];
bios_files.forEach(function (fname, i) {
if (fname) {
var title = "ROM File ("+ (i+1) +" of "+ bios_files.length +")",
mounter = (fname.endsWith(".zip")) ? cfgr.mountZip
: cfgr.mountFile;
files.push(mounter('minivmac',
cfgr.fetchFile(title, get_bios_url(fname))));
}
});
var meta = dict_from_xml(metadata),
peripherals = {},
game_files_counter = {};
files_with_ext_from_filelist(filelist, meta.emulator_ext).forEach(function (file, i) {
game_files_counter[file.name] = 1;
});
var game_files = Object.keys(game_files_counter),
len = game_files.length;
game_files.forEach(function (filename, i) {
var title = "Game File ("+ (i+1) +" of "+ len +")",
url = (filename.includes("/")) ? get_zip_url(filename)
: get_zip_url(filename, get_item_name(game));
files.push(cfgr.mountFile('/'+ filename,
cfgr.fetchFile(title, url)));
});
return files;
}
var get_item_name = function (game_path) {
return game_path.split('/').shift();
};
var get_game_name = function (game_path) {
return game_path.split('/').pop();
};
// NOTE: deliberately use cors.archive.org since this will 302 rewrite to iaXXXXX.us.archive.org/XX/items/...
// and need to keep that "artificial" extra domain-ish name to avoid CORS issues with IE/Safari (tracey@archive)
var get_emulator_config_url = function (module) {
return '//cors.archive.org/cors/emularity_engine_v1/' + module + '.json';
};
var get_other_emulator_config_url = function (module) {
return '//cors.archive.org/cors/emularity_config_v1/' + module + '.cfg';
};
var get_meta_url = function (game_path) {
var path = game_path.split('/');
return "//cors.archive.org/cors/"+ path[0] +"/"+ path[0] +"_meta.xml";
};
var get_files_url = function (game_path) {
var path = game_path.split('/');
return "//cors.archive.org/cors/"+ path[0] +"/"+ path[0] +"_files.xml";
};
var get_zip_url = function (game_path, item_path) {
if (item_path) {
return "//cors.archive.org/cors/"+ item_path +"/"+ game_path;
}
return "//cors.archive.org/cors/"+ game_path;
};
var get_js_url = function (js_filename) {
return "//cors.archive.org/cors/emularity_engine_v1/"+ js_filename;
};
var get_bios_url = function (bios_filename) {
return "//cors.archive.org/cors/emularity_bios_v1/"+ bios_filename;
};
function mountat (drive) {
return function (data) {
return { drive: drive,
mountpoint: "/" + drive,
data: data
};
};
}
return emulator;
}
/**
* BaseLoader
*/
function BaseLoader() {
return Array.prototype.reduce.call(arguments, extend);
}
BaseLoader.canvas = function (id) {
var elem = id instanceof Element ? id : document.getElementById(id);
return { canvas: elem };
};
BaseLoader.emulatorJS = function (url) {
return { emulatorJS: url };
};
BaseLoader.emulatorWASM = function (url) {
return { emulatorWASM: url };
};
BaseLoader.locateAdditionalEmulatorJS = function (func) {
return { locateAdditionalJS: func };
};
BaseLoader.fileSystemKey = function (key) {
return { fileSystemKey: key };
};
BaseLoader.nativeResolution = function (width, height) {
if (typeof width !== 'number' || typeof height !== 'number')
throw new Error("Width and height must be numbers");
return { nativeResolution: { width: Math.floor(width), height: Math.floor(height) } };
};
BaseLoader.aspectRatio = function (ratio) {
if (typeof ratio !== 'number')
throw new Error("Aspect ratio must be a number");
return { aspectRatio: ratio };
};
BaseLoader.scale = function (scale) {
return { scale: scale };
};
BaseLoader.sampleRate = function (rate) {
return { sample_rate: rate };
};
BaseLoader.muted = function (muted) {
return { muted: muted };
};
BaseLoader.mountZip = function (drive, file) {
return { files: [{ drive: drive,
mountpoint: "/" + drive,
file: file
}] };
};
BaseLoader.mountFile = function (filename, file) {
return { files: [{ mountpoint: filename,
file: file
}] };
};
BaseLoader.fetchFile = function (title, url) {
return { title: title, url: url, optional: false };
};
BaseLoader.fetchOptionalFile = function (title, url) {
return { title: title, url: url, optional: true };
};
BaseLoader.localFile = function (title, data) {
return { title: title, data: data };
};
/**
* DosBoxLoader
*/
function DosBoxLoader() {
var config = Array.prototype.reduce.call(arguments, extend);
config.emulator_arguments = build_dosbox_arguments(config.emulatorStart, config.files, config.extra_dosbox_args);
config.runner = EmscriptenRunner;
return config;
}
DosBoxLoader.__proto__ = BaseLoader;
DosBoxLoader.startExe = function (path) {
return { emulatorStart: path };
};
DosBoxLoader.extraArgs = function (args) {
return { extra_dosbox_args: args };
};
DosBoxLoader.mountZip = function (drive, file, drive_type) {
// driver type: hdd, floppy, cdrom
return { files: [{ drive: drive,
mountpoint: "/" + drive,
file: file,
drive_type: drive_type || "hdd",
}] };
};
/**
* PC98DosBoxLoader
*/
function PC98DosBoxLoader() {
var config = Array.prototype.reduce.call(arguments, extend);
config.emulator_arguments = build_dosbox_arguments(config.emulatorStart, config.files, config.extra_dosbox_args);
config.runner = PC98DosBoxRunner;
return config;
}
PC98DosBoxLoader.__proto__ = DosBoxLoader;
/**
* MAMELoader
*/
function MAMELoader() {
var config = Array.prototype.reduce.call(arguments, extend);
config.emulator_arguments = build_mame_arguments(config.muted, config.mame_driver,
config.nativeResolution, config.sample_rate,
config.peripheral, config.extra_mame_args,
config.keep_aspect, config.scale);
config.runner = MAMERunner;
return config;
}
MAMELoader.__proto__ = BaseLoader;
MAMELoader.driver = function (driver) {
return { mame_driver: driver };
};
MAMELoader.peripheral = function (peripheral, game) {
var p = {};
p[peripheral] = [game];
return { peripheral: p };
};
MAMELoader.keepAspect = function (keep) {
return { keep_aspect: !!keep };
};
MAMELoader.extraArgs = function (args) {
return { extra_mame_args: args };
};
/**
* VICELoader
*/
function VICELoader() {
var config = Array.prototype.reduce.call(arguments, extend);
if (config.fliplist) {
VICELoader._create_fliplist_file(config.files, config.fliplist);
}
config.emulator_arguments = build_vice_arguments(config.emulatorStart, config.files, config.fliplist, config.extra_vice_args);
config.runner = EmscriptenRunner;
return config;
}
VICELoader.__proto__ = BaseLoader;
VICELoader.autoLoad = function (path) {
return { emulatorStart: path };
};
VICELoader.extraArgs = function (args) {
return { extra_vice_args: args };
};
VICELoader.fliplist = function(fliplist) {
return { fliplist: fliplist };
};
VICELoader._create_fliplist_file = function(files, fliplists) {
let fliplist = "# Vice fliplist file\n\n";
fliplists.forEach(function(drive_fliplist, i) {
if(drive_fliplist) {
drive_fliplist = drive_fliplist.reverse();
fliplist += "UNIT " + (i + 8).toString() + "\n";
drive_fliplist.forEach(function(disk_image) {
fliplist += "/emulator/" + disk_image + "\n";
});
}
});
files.push(VICELoader.mountFile('/metadata_fliplist.vfl', VICELoader.localFile("Fliplist", fliplist)).files[0]);
};
/**
* SAELoader
*/
function SAELoader() {
var config = Array.prototype.reduce.call(arguments, extend);
config.runner = SAERunner;
return config;
}
SAELoader.__proto__ = BaseLoader;
SAELoader.model = function (model) {
return { amigaModel: model };
};
SAELoader.fastMemory = function (megabytes) {
return { fast_memory: megabytes << 20 };
};
SAELoader.rom = function (filenames) {
if (typeof filenames == "string")
filenames = [filenames];
return { rom: filenames[0], extRom: filenames[1] };
};
SAELoader.floppy = function (index, filename) {
var f = {};
f[index] = filename;
return { floppy: f };
};
SAELoader.ntsc = function (v) {
return { ntsc: !!v };
};
/**
* PCELoader
*/
function PCELoader() {
var config = Array.prototype.reduce.call(arguments, extend);
config.emulator_arguments = ["-c", "/emulator/pce-"+ config.pceModel +".cfg"];
if (config.extra_pce_args && config.extra_pce_args.length > 0) {
config.emulator_arguments = config.emulator_arguments.concat(config.extra_pce_args);
}
config.runner = EmscriptenRunner;
return config;
}
PCELoader.__proto__ = BaseLoader;
PCELoader.model = function (model) {
return { pceModel: model };
};
PCELoader.extraArgs = function (args) {
return { extra_pce_args: args };
};
/**
* NP2Loader
*
* TODO(db48x): This is currently doing triple-duty as the loader
* for the xmil and vmac emulators as well. Investigate to see if it
* would be better to split them out. Since all three are by the
* same author, it may simply be better to rename it instead.
*/
function NP2Loader() {
var config = Array.prototype.reduce.call(arguments, extend);
if (!config.emulatorStart) {
throw new Error("You must specify an autoLoad value in order to start this emulator. Try the name of the disk image.");
}
config.emulator_arguments = build_np2_arguments(config.emulatorStart, config.files, config.extra_np2_args);
config.runner = NP2Runner;
return config;
}
NP2Loader.__proto__ = BaseLoader;
NP2Loader.autoLoad = function (path) {
return { emulatorStart: path };
};
NP2Loader.extraArgs = function (args) {
return { extra_np2_args: args };
};
var build_mame_arguments = function (muted, driver, native_resolution, sample_rate, peripheral, extra_args, keepaspect, scale) {
scale = scale || 1;
var args = [driver,
'-verbose',
'-rompath', 'emulator',
'-window',
keepaspect ? '-keepaspect' : '-nokeepaspect'];
if (native_resolution && "width" in native_resolution && "height" in native_resolution) {
args.push('-resolution', [native_resolution.width * scale, native_resolution.height * scale].join('x'));
}
if (sample_rate) {
args.push('-samplerate', sample_rate);
}
if (peripheral) {
for (var p in peripheral) {
if (Object.prototype.propertyIsEnumerable.call(peripheral, p)) {
args.push('-' + p,
'/emulator/'+ (peripheral[p][0].replace(/\//g,'_')));
}
}
}
if (extra_args) {
args = args.concat(extra_args);
}
return args;
};
var build_dosbox_arguments = function (emulator_start, files, extra_args) {
var args = ['-conf', '/emulator/dosbox.conf'];
var len = files.length;
for (var i = 0; i < len; i++) {
if ('drive' in files[i]) {
// See also https://www.dosbox.com/wiki/MOUNT
if(files[i].drive_type==='hdd'){
args.push('-c', 'mount '+ files[i].drive +' /emulator'+ files[i].mountpoint);
}
else if(files[i].drive_type==='floppy'){
args.push('-c', 'mount '+ files[i].drive +' /emulator'+ files[i].mountpoint + ' -t floppy');
}
else if(files[i].drive_type==='cdrom'){
args.push('-c', 'mount '+ files[i].drive +' /emulator'+ files[i].mountpoint + ' -t cdrom');
}
}
}
if (extra_args) {
args = args.concat(extra_args);
}
var path = emulator_start.split(/\\|\//); // I have LTS already
args.push('-c', /^[a-zA-Z]:$/.test(path[0]) ? path.shift() : 'c:');
var prog = path.pop();
if (path && path.length)
args.push('-c', 'cd '+ path.join('/'));
args.push('-c', prog);
return args;
};
var build_vice_arguments = function (emulator_start, files, fliplist, extra_args) {
var args = emulator_start ? ["-autostart", "/emulator/" + emulator_start] : [];
if (fliplist[0] || fliplist[1] || fliplist[2] || fliplist[3]) {
args = args.concat(["-flipname", "/emulator/metadata_fliplist.vfl"]);
}
if (extra_args) {
args = args.concat(extra_args);
}
return args;
};
var build_np2_arguments = function (emulator_start, files, extra_args) {
var args = emulator_start ? [emulator_start] : [];
if (extra_args) {
args = args.concat(extra_args);
}
return args;
};
/*
* EmscriptenRunner
*/
function EmscriptenRunner(canvas, game_data) {
var self = this;
this._hooks = { start: [], reset: [] };
// This is somewhat wrong, because our Emscripten-based emulators
// are currently compiled to start immediately when their js file
// is loaded.
Module = { arguments: game_data.emulator_arguments,
screenIsReadOnly: true,
print: function (text) { console.log(text); },
printErr: function (text) { console.log(text); },
canvas: canvas,
noInitialRun: false,
locateFile: game_data.locateAdditionalJS,
wasmBinary: game_data.wasmBinary,
preInit: function () {
// Re-initialize BFS to just use the writable in-memory storage.
BrowserFS.initialize(game_data.fs);
var BFS = new BrowserFS.EmscriptenFS();
// Mount the file system into Emscripten.
FS.mkdir('/emulator');