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app.js
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app.js
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var VER = 'v20230219 (App), v20210913 (Emulator)'
var isIOS = !!navigator.platform && /iPad|iPhone|iPod/.test(navigator.platform);
var isMacOS = !!navigator.platform && /Mac/.test(navigator.platform);
if (isMacOS) {
if (navigator.maxTouchPoints > 2) {
// Nah, it is an iPad pretending to be a Mac
isIOS = true
isMacOS = false
}
}
// Try to get Safari version
var safariVer
var chromeVer
try {
(function () {
var uaLower = navigator.userAgent.toLowerCase()
var ret = uaLower.match(/chrome\/([0-9]+).([0-9]+)/)
if (ret) {
chromeVer = [parseInt(ret[1]), parseInt(ret[2])]
return
}
if (isIOS || isMacOS) {
ret = uaLower.match(/version\/([0-9]+).([0-9]+)/)
if (ret) {
safariVer = [parseInt(ret[1]), parseInt(ret[2])]
}
}
})()
} catch (e) {
console.log(e)
}
var isWebApp = navigator.standalone || false
var isSaveSupported = true
var isSaveNagAppeared = false
if (isIOS) {
//document.getElementById('romFile').files = null;
if (!isWebApp) {
// On iOS Safari, the indexedDB will be cleared after 7 days.
// To prevent users from frustration, we don't allow savegame on iOS unless the we are in the PWA mode.
isSaveSupported = false
var divIosHint = $id('ios-hint')
divIosHint.hidden = false
divIosHint.style = 'position: absolute; bottom: 20px;'
$id('btn-choose-file').hidden = true
$id('welcome').hidden = true
} else {
$id('ios-power-hint').hidden = false
}
}
if (isMacOS) {
// Check if it is Safari
if (navigator.userAgent.indexOf('Chrome') < 0) {
$id('mac-warning').hidden = false
}
}
if (!WebAssembly) {
if (isIOS && isWebApp) {
alert(`
You have lockdown mode enabled that disables WebAssembly and prevents the app from running.
Please go back to Safari, click 'Aa' button in the address bar, open "Website Settings", and disable "Lockdown Mode" for this website.
`)
} else {
alert(`WebAssembly is not supported or disabled in your browser.
Please check the settings of your browser and enable WebAssembly.
`)
}
}
function $id(id) {
return document.getElementById(id);
}
var optScaleMode = 0
var uiCurrentMode = 'welcome'
var plugins = {}
var body = document.getElementsByTagName("body")[0]
var html = document.getElementsByTagName("html")[0]
var config = {
swapABXY: false,
swapTopBottom: false,
swapTopBottomL: false,
powerSave: true,
micWhenR: true,
vkEnabled: true,
muteSound: false,
useDPad: false,
lsLayout: 0,
turbo: false,
scaleMode: 0,
fwLang: 1,
vkScale: 1
}
var emuUseTimer33 = false
var lidClosed = false
function afterConfigUpdated() {
emuUseTimer33 = false
if (config.powerSave || config.turbo) {
emuUseTimer33 = true
}
}
function loadConfig() {
var cfg = JSON.parse(window.localStorage['config'] || '{}')
for (var k in cfg) {
config[k] = cfg[k]
}
$id('power-save').checked = config.powerSave
$id('vk-enabled').checked = config.vkEnabled
$id('cfg-mute-sound').checked = config.muteSound
$id('vk-direction').value = config.useDPad ? "1" : "0"
$id('cfg-turbo').checked = config.turbo
$id('cfg-ls-layout').value = config.lsLayout
$id('cfg-scale-mode').value = config.scaleMode
$id('cfg-lang').value = config.fwLang
$id('cfg-swap-abxy').checked = config.swapABXY
$id('cfg-opt').checked = (localStorage['simd'] == '1')
afterConfigUpdated()
optScaleMode = config.scaleMode
}
loadConfig()
function uiSaveConfig() {
config.powerSave = !!($id('power-save').checked)
config.vkEnabled = !!($id('vk-enabled').checked)
config.muteSound = !!($id('cfg-mute-sound').checked)
config.useDPad = !!parseInt($id('vk-direction').value)
config.turbo = !!($id('cfg-turbo').checked)
config.lsLayout = parseInt($id('cfg-ls-layout').value)
config.scaleMode = parseInt($id('cfg-scale-mode').value)
config.fwLang = parseInt($id('cfg-lang').value)
config.swapABXY = !!($id('cfg-swap-abxy').checked)
window.localStorage['config'] = JSON.stringify(config)
afterConfigUpdated()
}
$id('cfg-opt').onclick = function () {
if (this.checked) {
if (safariVer) {
if (!(safariVer[0] >= 16 && safariVer[1] >= 4)) {
alert('iOS 16.4+ is required to enable this option.')
this.checked = false
return
}
} else if (chromeVer) {
if (chromeVer[0] < 92) {
alert('Chrome 92+ is required to enable this option.')
this.checked = false
return
}
} else {
alert("We don't know if your browser is supported. Please try it and disable this option if it doesn't work.")
}
localStorage['simd'] = '1'
} else {
localStorage['simd'] = '0'
}
alert('Please restart the app to apply the change.')
}
function uiMenuBack() {
tryInitSound()
uiSaveConfig()
if (emuIsGameLoaded) {
uiSwitchTo('player')
} else {
uiSwitchTo('welcome')
}
}
function toyEncrypt(src) {
var dst = new Uint8Array(src.length)
for (var i = 0; i < src.length; i++) {
dst[i] = src[i] ^ 0xFB
}
return dst
}
async function emuBackupCloudSav() {
return toyEncrypt(pako.gzip(emuCopySavBuffer()))
}
async function emuRestoreCloudSav(u8Arr) {
var sav = pako.ungzip(toyEncrypt(u8Arr))
await localforage.setItem('sav-' + gameID, sav)
return true
}
function uiSaveExport() {
if (isSaveSupported) {
if (!confirm(`Auto-save is enabled, you DON'T have to export save data manually.
After you saved in the game, wait a few seconds and save data will be stored in the app's local storage automatically.
To prevent the data loss caused by accidential deletion of the Home Screen icon or damaged device, you may export the save data to a safe place.
Do you wish to continue?`)) {
return
}
if (prompt('You HAVE to save in the game before exporting the save data.\n\nPlease enter "Yes" to confirm.') !== 'Yes') {
return
}
}
var u8Arr = pako.gzip(emuCopySavBuffer())
var blob = new Blob([u8Arr], { type: "application/binary" });
var link = document.createElement("a");
link.href = window.URL.createObjectURL(blob);
link.download = 'sav-' + gameID + '.dsz';
link.click();
}
async function uiSaveRestore() {
var file = $id('restore-file').files[0]
if (!file) {
return
}
var fileExt = file.name.split('.').pop().toLowerCase()
var allowedExts = { '4dsav': true, 'sav': true, 'dsv': true, '4dsaz': true, 'dsz': true }
if (!allowedExts[fileExt]) {
alert('Invalid file extension: ' + fileExt)
return
}
var u8Arr = new Uint8Array(await file.arrayBuffer())
if (fileExt == '4dsav') {
u8Arr = toyEncrypt(u8Arr)
}
if (fileExt == '4dsaz') {
// Use pako to decompress
u8Arr = pako.ungzip(toyEncrypt(u8Arr))
}
if (fileExt == 'dsz') {
u8Arr = pako.ungzip(u8Arr)
}
if (fileExt == 'sav') {
var origSave = emuCopySavBuffer()
if (origSave.length <= 0) {
alert('You have to save in the game at least once, before importing .sav file.')
return
}
if (u8Arr.length > origSave.length) {
alert('The .sav file is too large.')
return
}
// Copy the u8Arr to the beginning of origSave, overwriting the original save data.
origSave.set(u8Arr, 0)
u8Arr = origSave
}
localforage.setItem('sav-' + gameID, u8Arr).then(() => {
alert('Save data updated. \nPlease close and reopen this app.')
setTimeout(() => {
location.reload()
}, 500)
})
}
var gameID = ''
var emuKeyState = new Array(14)
const emuKeyNames = ["right", "left", "down", "up", "select", "start", "b", "a", "y", "x", "l", "r", "debug", "lid"]
var vkMap = {}
var vkState = {}
var keyNameToKeyId = {}
var vkStickPos = [0, 0, 0, 0, 0]
var vkDPadRect = { x: 0, y: 0, w: 0, h: 0 }
for (var i = 0; i < emuKeyNames.length; i++) {
keyNameToKeyId[emuKeyNames[i]] = i
}
var isLandscape = false
const emuKeyboradMapping = [39, 37, 40, 38, 16, 13, 90, 88, 65, 83, 81, 87, -1, 8]
var emuIsRunning = false
var emuIsGameLoaded = false
var fps = 0
var divFPS = $id('fps')
var fileInput = $id('rom')
var romSize = 0
var FB = [0, 0]
var screenCanvas = [document.getElementById('top'), document.getElementById('bottom')]
var ctx2d;
var audioContext
var audioBuffer
var scriptNode
const audioFifoCap = 8192
var audioFifoL = new Int16Array(audioFifoCap)
var audioFifoR = new Int16Array(audioFifoCap)
var audioFifoHead = 0
var audioFifoLen = 0
var frameCount = 0
var prevCalcFPSTime = 0
var touched = 0
var touchX = 0
var touchY = 0
var prevSaveFlag = 0
var lastTwoFrameTime = 10
var fbSize
function callPlugin(type, arg) {
for (var k in plugins) {
if (plugins[k].handler) {
plugins[k].handler(type, arg)
}
}
}
function showMsg(msg) {
document.getElementById('msg-text').innerText = msg
document.getElementById('msg-layer').hidden = false
setTimeout(function () {
document.getElementById('msg-layer').hidden = true
}, 1000)
}
function emuRunAudio() {
var samplesRead = Module._fillAudioBuffer(4096)
if (config.muteSound) {
return
}
for (var i = 0; i < samplesRead; i++) {
if (audioFifoLen >= audioFifoCap) {
break
}
var wpos = (audioFifoHead + audioFifoLen) % audioFifoCap
audioFifoL[wpos] = audioBuffer[i * 2]
audioFifoR[wpos] = audioBuffer[i * 2 + 1]
audioFifoLen++
}
}
function emuRunFrame() {
processGamepadInput()
var keyMask = 0;
for (var i = 0; i < 14; i++) {
if (emuKeyState[i]) {
keyMask |= 1 << i
}
}
var mic = emuKeyState[11]
if (mic) {
keyMask |= 1 << 14
}
if (lidClosed) {
keyMask |= 1 << 13
}
if (config.turbo) {
for (var i = 0; i < 2; i++) {
Module._runFrame(0, keyMask, touched, touchX, touchY)
emuRunAudio()
}
} else if (config.powerSave) {
Module._runFrame(0, keyMask, touched, touchX, touchY)
emuRunAudio()
}
Module._runFrame(1, keyMask, touched, touchX, touchY)
emuRunAudio()
if (optScaleMode < 2) {
ctx2d[0].putImageData(FB[0], 0, 0)
ctx2d[1].putImageData(FB[1], 0, 0)
} else {
gpuDraw(screenCanvas[0], FB[0])
gpuDraw(screenCanvas[1], FB[1])
}
frameCount += 1
if (frameCount % 120 == 0) {
var time = performance.now()
fps = 120 / ((time - prevCalcFPSTime) / 1000)
prevCalcFPSTime = time
divFPS.innerText = 'fps:' + ('' + fps).substring(0, 5)
}
if (frameCount % 30 == 0) {
checkSaveGame()
}
}
function wasmReady() {
//Module._setSampleRate(47856)
setTimeout(() => {
if ($id('loading').hidden == true) {
return;
}
$id('loading').hidden = true
$id('loadrom').hidden = false
var btn = $id('btn-choose-file')
if (!btn.onclick) {
btn.onclick = () => {
tryInitSound()
$id('rom').click()
}
}
}, 2000)
$id('ver-info').innerText = 'Ver: ' + VER + ' '
if (optScaleMode < 2) {
ctx2d = screenCanvas.map((v) => { return v.getContext('2d', { alpha: false }) })
} else {
gpuInit()
}
}
function emuCopySavBuffer() {
var size = Module._savGetSize()
if (size > 0) {
var ptr = Module._savGetPointer(0)
var tmpSaveBuf = new Uint8Array(size)
tmpSaveBuf.set(Module.HEAPU8.subarray(ptr, ptr + size))
return tmpSaveBuf
} else {
return new Uint8Array(0)
}
}
function checkSaveGame() {
if (!isSaveSupported) {
return
}
var saveUpdateFlag = Module._savUpdateChangeFlag()
if ((saveUpdateFlag == 0) && (prevSaveFlag == 1)) {
var savBuf = emuCopySavBuffer()
if (savBuf.length > 0) {
localforage.setItem('sav-' + gameID, savBuf)
showMsg('Auto saving...')
}
}
prevSaveFlag = saveUpdateFlag
}
async function tryLoadROM(file) {
if (!file) {
return
}
if (file.size < 1024) {
return
}
var header = new Uint8Array(await (file.slice(0, 1024)).arrayBuffer())
gameID = ''
for (var i = 0; i < 0x10; i++) {
gameID += (header[i] == 0) ? ' ' : String.fromCharCode(header[i])
}
if (gameID[0xC] == '#') {
// a homebrew!
gameID = file.name
}
console.log('gameID', gameID)
romSize = file.size
var romBufPtr = Module._prepareRomBuffer(romSize)
console.log(romSize, romBufPtr)
const blockSize = 4 * 1024 * 1024
// Load the file by small chunks, to make browser heap happier
for (var pos = 0; pos < romSize; pos += blockSize) {
var chunk = await (file.slice(pos, pos + blockSize)).arrayBuffer()
Module.HEAPU8.set(new Uint8Array(chunk), romBufPtr + pos)
}
var saveData = await localforage.getItem('sav-' + gameID)
if (saveData) {
Module.HEAPU8.set(saveData, Module._savGetPointer(saveData.length))
try {
dpTryAutoBackup().then(function (ret) {
if (ret) {
showMsg("Daily cloud backup done!")
}
})
dpGameLoaded()
} catch (e) {
console.log(e)
alert("Cloud backup failed: " + e)
}
}
Module._savUpdateChangeFlag()
//Module._emuSetOpt(0, config.fwLang)
var ret = Module._loadROM(romSize);
if (ret != 1) {
msg = 'LoadROM failed: ' + ret + "\n"
if (ret == -1001) {
msg += 'This file is encrypted and not supported for now.\n'
}
alert(msg)
return;
}
ptrFrontBuffer = Module._getSymbol(5)
var fb = Module._getSymbol(4)
for (var i = 0; i < 2; i++) {
FB[i] = new ImageData(new Uint8ClampedArray(Module.HEAPU8.buffer).subarray(fb + 256 * 192 * 4 * i, fb + 256 * 192 * 4 * (i + 1)), 256, 192)
}
var ptrAudio = Module._getSymbol(6)
audioBuffer = new Int16Array(Module.HEAPU8.buffer).subarray(ptrAudio / 2, ptrAudio / 2 + 16384 * 2)
emuIsGameLoaded = true
callPlugin('loaded', gameID)
if (window.eaRunHook) {
window.eaRunHook();
} else {
emuStart();
}
}
// Allow drag and drop of files on entire window
window.ondragover = function (e) {
e.preventDefault()
e.dataTransfer.dropEffect = 'copy'
}
window.ondrop = function (e) {
e.preventDefault()
tryLoadROM(e.dataTransfer.files[0])
}
function emuStart() {
if (!emuIsGameLoaded) {
return
}
console.log('Start!!!')
emuIsRunning = true
uiSwitchTo('player')
}
function initVK() {
var vks = document.getElementsByClassName('vk')
for (var i = 0; i < vks.length; i++) {
var vk = vks[i]
var k = vks[i].getAttribute('data-k')
if (k) {
vkMap[k] = vk
vkState[k] = [0, 0]
}
}
}
initVK()
function makeVKStyle(top, left, w, h, fontSize) {
return 'top:' + top + 'px;left:' + left + 'px;width:' + w + 'px;height:' + h + 'px;' + 'font-size:' + fontSize + 'px;line-height:' + h + 'px;'
}
function uiAdjustVKLayout() {
var baseSize = Math.min(window.innerWidth, window.innerHeight) * 0.14 * config.vkScale
var fontSize = baseSize * 0.7
var offTop = Math.min(fbSize[0][1] + fbSize[1][1], window.innerHeight - Math.ceil(baseSize * 3.62))
var offLeft = 0
var abxyWidth = baseSize * 3
var abxyHeight = baseSize * 3
var vkw = baseSize
var vkh = baseSize
vkw = baseSize * 1.5
vkh = baseSize * 0.6
fontSize = baseSize * 0.5
vkMap['l'].style = makeVKStyle(offTop, 0, vkw, vkh, fontSize)
vkMap['r'].style = makeVKStyle(offTop, window.innerWidth - vkw, vkw, vkh, fontSize)
vkw = baseSize * 0.4
vkh = baseSize * 0.4
$id('vk-menu').style = makeVKStyle(offTop, window.innerWidth / 2 - vkw / 2, vkw, vkh, fontSize)
offTop += baseSize * 0.62
vkw = baseSize
vkh = baseSize
offLeft = window.innerWidth - abxyWidth
vkMap['a'].style = makeVKStyle(offTop + abxyHeight / 2 - vkh / 2, offLeft + abxyWidth - vkw, vkw, vkh, fontSize)
vkMap['b'].style = makeVKStyle(offTop + abxyHeight - vkh, offLeft + abxyWidth / 2 - vkw / 2, vkw, vkh, fontSize)
vkMap['x'].style = makeVKStyle(offTop, offLeft + abxyWidth / 2 - vkw / 2, vkw, vkh, fontSize)
vkMap['y'].style = makeVKStyle(offTop + abxyHeight / 2 - vkh / 2, offLeft, vkw, vkh, fontSize)
vkw = baseSize * 1.0
vkh = baseSize * 1.0
offLeft = 0
$id('vk-stick').style = config.useDPad ? 'display:none;' : makeVKStyle(offTop + abxyHeight / 2 - vkh / 2, offLeft + abxyHeight / 2 - vkw / 2, vkw, vkh, fontSize)
vkStickPos = [offTop + abxyHeight / 2, offLeft + abxyHeight / 2, vkw, vkh, fontSize]
var dpadW = abxyWidth
var dpadH = abxyHeight
var dpadX = offLeft
var dpadY = offTop
vkDPadRect = { x: dpadX, y: dpadY, width: dpadW, height: dpadH }
$id('vk-dpad-1').style = config.useDPad ? makeVKStyle(dpadY + dpadH / 3, dpadX, dpadW, dpadH / 3, fontSize) : 'display:none;'
$id('vk-dpad-2').style = config.useDPad ? makeVKStyle(dpadY, dpadX + dpadW / 3, dpadW / 3, dpadH, fontSize) : 'display:none;'
vkw = baseSize * 0.4
vkh = baseSize * 0.4
fontSize = baseSize * 0.2
vkMap['select'].style = makeVKStyle(offTop + abxyHeight - vkh, window.innerWidth / 2 - vkw * 1.5, vkw, vkh, fontSize)
vkMap['start'].style = makeVKStyle(offTop + abxyHeight - vkh, window.innerWidth / 2 + vkw * 0.5, vkw, vkh, fontSize)
}
function maxScreenSize(maxWidth, maxHeight) {
var w = maxWidth
var h = w / 256 * 192
if (h > maxHeight) {
h = maxHeight
w = h / 192 * 256
}
return [w, h]
}
function setScreenPos(c, left, top, w, h) {
var sty = 'left:' + left + 'px;top:' + top + "px;width:" + w + "px;height:" + h + "px;"
if (optScaleMode == 0) {
sty += 'image-rendering:pixelated;'
}
c.style = sty
if (optScaleMode >= 2) {
var devicePixelRatio = window.devicePixelRatio || 1
c.width = w * devicePixelRatio
c.height = h * devicePixelRatio
}
}
function uiUpdateLayout() {
isLandscape = isScreenLandscape()
if ((!isLandscape) || (config.lsLayout == 0)) {
// Top-bottom
var maxWidth = window.innerWidth
var maxHeight = window.innerHeight / 2
var sz = maxScreenSize(maxWidth, maxHeight); var w = sz[0]; var h = sz[1];
var left = 0
left += (window.innerWidth - w) / 2;
var top = 0
fbSize = [[w, h], [w, h]]
for (var i = 0; i < 2; i++) {
setScreenPos(screenCanvas[i], left, top, fbSize[i][0], fbSize[i][1])
top += h
}
} else if (config.lsLayout == 1) {
// Left-right 1:1
var maxWidth = window.innerWidth / 2
var maxHeight = window.innerHeight
var sz = maxScreenSize(maxWidth, maxHeight); var w = sz[0]; var h = sz[1];
var left = 0
var top = 0
fbSize = [[w, h], [w, h]]
for (var i = 0; i < 2; i++) {
setScreenPos(screenCanvas[i], left, top, fbSize[i][0], fbSize[i][1])
left += w
}
} else if (config.lsLayout == 2) {
// Left-right X:1
var maxWidth = window.innerWidth - 256
var maxHeight = window.innerHeight
var sz = maxScreenSize(maxWidth, maxHeight); var w = sz[0]; var h = sz[1];
var left = 0
var top = 0
fbSize = [[w, h], [256, 192]]
for (var i = 0; i < 2; i++) {
setScreenPos(screenCanvas[i], left, top, fbSize[i][0], fbSize[i][1])
left += w
}
}
uiAdjustVKLayout()
}
function uiSwitchTo(mode) {
if (mode == uiCurrentMode) {
return
}
uiCurrentMode = mode
$id('welcome').hidden = true
$id('vk-layer').hidden = true
$id('menu').hidden = true
$id('player').hidden = true
body.style = ''
html.style = ''
emuIsRunning = false
if (mode == 'player') {
body.style = 'touch-action: none;'
html.style = 'position: fixed;overflow:hidden;touch-action: none;'
for (var i = 0; i < 14; i++) {
emuKeyState[i] = false
}
if (config.vkEnabled) {
$id('vk-layer').hidden = false
}
uiUpdateLayout()
if (emuIsGameLoaded) {
emuIsRunning = true
}
$id('player').hidden = false
}
if (mode == 'menu') {
$id('player').hidden = false
$id('menu').hidden = false
$id('menu-savegame').hidden = emuIsGameLoaded ? false : true
}
if (mode == 'welcome') {
$id('welcome').hidden = false
}
}
async function clearROM() {
await localforage.removeItem("ROMdata")
console.log("Cleared ROM data!!")
alert("Cleared cached ROM. Please restart the app.")
return
}
window.onload = async () => {
/*if (await localforage.getItem("ROMdata") === null) {
var ROMfile = await fetch('data.nds').then(r => r.blob());
try {
await localforage.setItem("ROMdata", ROMfile.arrayBuffer())
} catch (err) {
var cantCache = 1
}
}
try {
var file = new Blob([await localforage.getItem("ROMdata")])
} catch (err) {
var cantCache = 1
}
if (cantCache === 1) {*/
var file = await fetch('data.nds').then(r => r.blob());
//}
//var fileNameLower = file.name.toLowerCase()
/*if (fileNameLower.endsWith('.json')) {
var obj = JSON.parse(await file.text())
var pluginName = obj.name || 'unknown'
plugins[pluginName] = obj
if (obj.js) {
plugins[pluginName].handler = eval(obj.js)(obj)
}
alert('plugin loaded!')
return
} else if (fileNameLower.endsWith('.gba')) {
alert('This is a GBA file, redirecting to the GBA player...')
window.location.href = '/gba';
} else if (fileNameLower.endsWith('.zip')) {
alert('ZIP files are not supported.\nOn iOS, you can unzip it with the built-in Files app.')
} else if (fileNameLower.endsWith('.3ds')) {
alert('No, 3DS is not supported.')
} else if (fileNameLower.endsWith('.nds')) {
tryLoadROM(file)
return
} else {
alert('Unknown file type!')
}*/
tryLoadROM(file)
return
}
function onScriptNodeAudioProcess(e) {
var chanL = e.outputBuffer.getChannelData(0)
var chanR = e.outputBuffer.getChannelData(1)
if (config.muteSound) {
return
}
for (var i = 0; i < chanL.length; i++) {
if (audioFifoLen <= 0) {
return
}
audioFifoLen--
chanL[i] = audioFifoL[audioFifoHead] / 32768.0
chanR[i] = audioFifoR[audioFifoHead] / 32768.0
audioFifoHead = (audioFifoHead + 1) % audioFifoCap
}
}
// must be called in user gesture
function tryInitSound() {
try {
if (audioContext) {
if (audioContext.state != 'running') {
audioContext.resume()
}
return;
}
audioContext = new (window.AudioContext || window.webkitAudioContext)({ latencyHint: 0.0001, sampleRate: 48000 });
scriptNode = audioContext.createScriptProcessor(2048, 0, 2);
scriptNode.onaudioprocess = onScriptNodeAudioProcess;
scriptNode.connect(audioContext.destination);
audioContext.resume()
} catch (e) {
console.log(e)
//alert('Cannnot init sound ')
}
}
function emuLoop() {
window.requestAnimationFrame(emuLoop)
if (emuIsRunning && (!emuUseTimer33)) {
prevRunFrameTime = performance.now()
emuRunFrame()
}
}
emuLoop()
function emuTimer33() {
if (emuIsRunning && emuUseTimer33) {
emuRunFrame()
}
}
setInterval(emuTimer33, 33)
var stickTouchID = null
var tpadTouchID = null
function isPointInRect(x, y, r) {
if ((x >= r.x) && (x < r.x + r.width)) {
if ((y >= r.y) && (y < r.y + r.height)) {
return true
}
}
return false
}
function clamp01(a) {
if (a < 0) {
return 0
}
if (a > 1) {
return 1
}
return a
}
function handleTouch(event) {
tryInitSound()
if (!emuIsRunning) {
return
}
event.preventDefault();
event.stopPropagation();
var isDown = false
var x = 0
var y = 0
var needUpdateStick = false
var stickY = vkStickPos[0]
var stickX = vkStickPos[1]
var stickW = vkStickPos[2]
var stickH = vkStickPos[3]
var stickPressed = false
var stickDeadZone = stickW * 0.2
var nextStickTouchID = null
var nextTpadTouchID = null
var tsRect = screenCanvas[1].getBoundingClientRect()
for (var i = 0; i < emuKeyState.length; i++) {
emuKeyState[i] = false
}
for (var k in vkState) {
vkState[k][1] = 0
}
for (var i = 0; i < event.touches.length; i++) {
var t = event.touches[i];
var tid = t.identifier
var dom = document.elementFromPoint(t.clientX, t.clientY)
var k = dom ? dom.getAttribute('data-k') : null
if (config.useDPad) {
if (isPointInRect(t.clientX, t.clientY, vkDPadRect)) {
var xgrid = Math.floor((t.clientX - vkDPadRect.x) / vkDPadRect.width * 3)
var ygrid = Math.floor((t.clientY - vkDPadRect.y) / vkDPadRect.height * 3)
var xygrid = xgrid + ygrid * 3
if (xygrid == 5)
// right
emuKeyState[0] = true
else if (xygrid == 3)
// left
emuKeyState[1] = true
else if (xygrid == 7)
// down
emuKeyState[2] = true
else if (xygrid == 1)
// up
emuKeyState[3] = true
}
} else {
if ((tid === stickTouchID) || ((dom == vkMap['stick']) && (tid != tpadTouchID))) {
stickPressed = true
vkState['stick'][1] = 1
var sx = t.clientX
var sy = t.clientY
if (sx < stickX - stickDeadZone) {
emuKeyState[1] = true
}
if (sx > stickX + stickDeadZone) {
emuKeyState[0] = true
}
if (sy < stickY - stickDeadZone) {
emuKeyState[3] = true
}
if (sy > stickY + stickDeadZone) {
emuKeyState[2] = true
}
sx = Math.max(stickX - stickW / 2, sx)
sx = Math.min(stickX + stickW / 2, sx)
sy = Math.max(stickY - stickH / 2, sy)
sy = Math.min(stickY + stickH / 2, sy)
stickX = sx
stickY = sy
needUpdateStick = true
nextStickTouchID = tid
continue
}
}
if ((tid === tpadTouchID) || (isPointInRect(t.clientX, t.clientY, tsRect) && (!k))) {
isDown = true
x = clamp01((t.clientX - tsRect.x) / tsRect.width) * 256
y = clamp01((t.clientY - tsRect.y) / tsRect.height) * 192
nextTpadTouchID = tid
continue
}
if (k) {
vkState[k][1] = 1
continue
}
}
touched = isDown ? 1 : 0;
touchX = x
touchY = y
for (var k in vkState) {
if (vkState[k][0] != vkState[k][1]) {
var dom = vkMap[k]
vkState[k][0] = vkState[k][1]
if (vkState[k][1]) {
//dom.classList.add('vk-touched')
if (k == 'menu') {
uiSwitchTo('menu')
}
} else {
//dom.classList.remove('vk-touched')
if (k == "stick") {
needUpdateStick = true
}
}
}
}
for (var i = 0; i < emuKeyState.length; i++) {
var k = emuKeyNames[i]
if (vkState[k]) {
if (vkState[k][1]) {
emuKeyState[i] = true
}
}
}
if (needUpdateStick) {
vkMap['stick'].style = makeVKStyle(stickY - stickW / 2, stickX - stickW / 2, stickW, stickH, vkStickPos[4])
}
stickTouchID = nextStickTouchID
tpadTouchID = nextTpadTouchID
}
['touchstart', 'touchmove', 'touchend', 'touchcancel', 'touchenter', 'touchleave'].forEach((val) => {
window.addEventListener(val, handleTouch)
})
window.onmousedown = window.onmouseup = window.onmousemove = (e) => {
if (!emuIsRunning) {
return
}
if (e.type == 'mousedown') {
tryInitSound()
}
var r = screenCanvas[1].getBoundingClientRect()
e.preventDefault()
e.stopPropagation()
var isDown = (e.buttons != 0) && (isPointInRect(e.clientX, e.clientY, r))
var x = (e.clientX - r.x) / r.width * 256
var y = (e.clientY - r.y) / r.height * 192
touched = isDown ? 1 : 0;
touchX = x
touchY = y
}