Merge branch 'master' into cat-jump

public/src/css/game.css

@@ -16,14 +16,6 @@
 	width: 100%;
 	height: 100%;
 }
-#cursor{
-	position: fixed;
-	width: 1px;
-	height: 1px;
-	cursor: none;
-	pointer-events: none;
-	z-index: 1;
-}
 #touch-drum{
 	display: none;
 	position: absolute;

public/src/css/view.css

@@ -158,8 +158,7 @@ kbd{
 .setting-box:first-child{
 	margin-top: 0;
 }
-.settings-outer .view-content:not(:hover) .setting-box.selected,
-.view-outer:not(.settings-outer) .setting-box.selected,
+.view-content:not(:hover) .setting-box.selected,
 .setting-box:hover{
 	background: #ffb547;
 	animation: 2s linear border-pulse infinite;
@@ -177,7 +176,6 @@ kbd{
 	overflow: hidden;
 }
 .view-content:not(:hover) .setting-box.selected .setting-name,
-.view-outer:not(.settings-outer) .setting-box.selected .setting-name,
 .setting-box:hover .setting-name,
 .setting-box:hover #gamepad-value{
 	color: #fff;
@@ -193,6 +191,8 @@ kbd{
 	border-radius: 0.2em;
 	padding: 0.5em;
 	box-sizing: border-box;
+	overflow: hidden;
+	white-space: nowrap;
 }
 .setting-value.selected{
 	width: calc(50% + 0.2em);
@@ -215,27 +215,26 @@ kbd{
 	background: rgba(0, 0, 0, 0.5);
 	z-index: 1;
 }
-#settings-gamepad{
+#settings-gamepad,
+#settings-latency{
 	display: none;
 }
 #settings-gamepad .view{
-	position: absolute;
-	margin: auto;
-	top: 0;
-	right: 0;
-	bottom: 0;
-	left: 0;
-	width: 574px;
-	height: 428px;
-	max-height: calc(100vh - 14em + 88px);
+	width: 29.9em;
+	max-width: 100vw;
 }
 #settings-gamepad .setting-box{
 	height: auto;
+	overflow: hidden;
+}
+#gamepad-bg,
+#gamepad-buttons{
+	background-size: 20.53em;
 }
 #gamepad-bg{
 	position: relative;
-	width: 550px;
-	height: 317px;
+	width: 20.53em;
+	height: 11.83em;
 	max-height: none;
 	background-repeat: no-repeat;
 	text-align: center;
@@ -244,11 +243,11 @@ kbd{
 }
 #gamepad-buttons{
 	position: absolute;
-	left: 141px;
-	top: 120px;
-	width: 282px;
-	height: 131px;
-	background-position: 0 -318px;
+	left: 5.26em;
+	top: 4.48em;
+	width: 10.52em;
+	height: 4.89em;
+	background-position: 0 -11.87em;
 	background-repeat: no-repeat;
 	pointer-events: none;
 }
@@ -259,3 +258,36 @@ kbd{
 #gamepad-value::before{
 	left: auto;
 }
+#settings-latency .view{
+	width: 30em;
+}
+#settings-latency .setting-value{
+	position: relative;
+}
+.setting-value:not(.selected) .latency-buttons{
+	display: none;
+}
+.setting-value .latency-buttons{
+	position: absolute;
+	top: 0;
+	right: 0;
+	bottom: 0;
+	padding: 0;
+}
+.latency-buttons span{
+	display: inline-block;
+	width: 2em;
+	height: 100%;
+	text-align: center;
+	background-color: #c3862a;
+	color: #fff;
+	line-height: 2em;
+	outline: none;
+}
+.latency-buttons span:hover,
+.latency-buttons span:active{
+	background-color: #946013;
+}
+.left-buttons .taibtn{
+	z-index: 1;
+}

public/src/js/about.js

@@ -29,23 +29,30 @@
 		this.endButton.innerText = strings.tutorial.ok
 		this.endButton.setAttribute("alt", strings.tutorial.ok)
 		
+		this.items = []
+		
 		var versionUrl = gameConfig._version.url
 		this.getLink(this.linkIssues).href = versionUrl + "issues"
+		this.items.push(this.linkIssues)
 		
 		var contactEmail = gameConfig.email
-		if (typeof contactEmail === 'string') {
+		this.hasEmail = typeof contactEmail === "string"
+		if(this.hasEmail){
 			this.linkEmail.setAttribute("alt", contactEmail)
 			this.getLink(this.linkEmail).href = "mailto:" + contactEmail
-			this.getLink(this.linkEmail).text = contactEmail
-		} else {
-			this.linkEmail.style.display = "none"
+			this.getLink(this.linkEmail).innerText = contactEmail
+			this.items.push(this.linkEmail)
+		}else{
+			this.linkEmail.parentNode.removeChild(this.linkEmail)
 		}
 		
 		pageEvents.add(this.linkIssues, ["click", "touchend"], this.linkButton.bind(this))
+		if(this.hasEmail){
 			pageEvents.add(this.linkEmail, ["click", "touchend"], this.linkButton.bind(this))
+		}
 		pageEvents.add(this.endButton, ["mousedown", "touchstart"], this.onEnd.bind(this))
-		this.items = [this.linkIssues, this.linkEmail, this.endButton]
-		this.selected = 2
+		this.items.push(this.endButton)
+		this.selected = this.items.length - 1
 		
 		this.keyboard = new Keyboard({
 			confirm: ["enter", "space", "don_l", "don_r"],
@@ -146,6 +153,8 @@
 			}
 		}
 		diag.push("Language: " + strings.id + userLangStr)
+		var latency = settings.getItem("latency")
+		diag.push("Audio Latency: " + (latency.audio > 0 ? "+" : "") + latency.audio.toString() + "ms, Video Latency: " + (latency.video > 0 ? "+" : "") + latency.video.toString() + "ms")
 		var errorObj = {}
 		if(localStorage["lastError"]){
 			try{
@@ -195,7 +204,9 @@
 		}
 		
 		var issueBody = strings.about.issueTemplate + "\n\n\n\n" + diag
+		if(this.hasEmail){
 			this.getLink(this.linkEmail).href += "?body=" + encodeURIComponent(issueBody.replace(/\n/g, "<br>\r\n"))
+		}
 		
 		return diag
 	}
@@ -214,7 +225,9 @@
 		this.keyboard.clean()
 		this.gamepad.clean()
 		pageEvents.remove(this.linkIssues, ["click", "touchend"])
+		if(this.hasEmail){
 			pageEvents.remove(this.linkEmail, ["click", "touchend"])
+		}
 		pageEvents.remove(this.endButton, ["mousedown", "touchstart"])
 		if(this.textarea){
 			pageEvents.remove(this.textarea, ["focus", "blur"])

public/src/js/assets.js

@@ -91,26 +91,8 @@ var assets = {
 		"se_ka.wav",
 		"se_pause.wav",
 		"se_jump.wav",
+		"se_calibration.wav",
 
-		"v_combo_50_meka.wav",
-		"v_combo_100_meka.wav",
-		"v_combo_200_meka.wav",
-		"v_combo_300_meka.wav",
-		"v_combo_400_meka.wav",
-		"v_combo_500_meka.wav",
-		"v_combo_600_meka.wav",
-		"v_combo_700_meka.wav",
-		"v_combo_800_meka.wav",
-		"v_combo_900_meka.wav",
-		"v_combo_1000_meka.wav",
-		"v_combo_1100_meka.wav",
-		"v_combo_1200_meka.wav",
-		"v_combo_1300_meka.wav",
-		"v_combo_1400_meka.wav",
-		"v_combo_over1500_meka.wav",
-
-		"v_fullcombo_meka.wav",
-		"v_renda_meka.wav",
 		"v_results.wav",
 		"v_sanka.wav",
 		"v_songsel.wav",
@@ -128,23 +110,6 @@ var assets = {
 		"se_results_countup.wav",
 		"se_results_crown.wav",
 
-		"v_combo_50.wav",
-		"v_combo_100.wav",
-		"v_combo_200.wav",
-		"v_combo_300.wav",
-		"v_combo_400.wav",
-		"v_combo_500.wav",
-		"v_combo_600.wav",
-		"v_combo_700.wav",
-		"v_combo_800.wav",
-		"v_combo_900.wav",
-		"v_combo_1000.wav",
-		"v_combo_1100.wav",
-		"v_combo_1200.wav",
-		"v_combo_1300.wav",
-		"v_combo_1400.wav",
-		"v_combo_over1500.wav",
-	
 		"v_fullcombo.wav",
 		"v_renda.wav",
 		"v_results_fullcombo.wav",

public/src/js/canvascache.js

@@ -1,5 +1,6 @@
 class CanvasCache{
-	constructor(w, h, scale){
+	constructor(noSmoothing, w, h, scale){
+		this.noSmoothing = noSmoothing
 		if(w){
 			this.resize(w, h, scale)
 		}
@@ -11,6 +12,9 @@ class CanvasCache{
 			this.map = new Map()
 			this.canvas = document.createElement("canvas")
 			this.ctx = this.canvas.getContext("2d")
+			if(this.noSmoothing){
+				this.ctx.imageSmoothingEnabled = false
+			}
 		}
 		this.scale = scale
 		this.x = 0

public/src/js/canvasdraw.js

@@ -1,5 +1,5 @@
 class CanvasDraw{
-	constructor(){
+	constructor(noSmoothing){
 		this.diffStarPath = new Path2D(vectors.diffStar)
 		this.longVowelMark = new Path2D(vectors.longVowelMark)
 		
@@ -68,7 +68,8 @@
 			emCap: /[MWＭＷ]/,
 			rWidth: /[abdfIjo-rtvａｂｄｆＩｊｏ-ｒｔｖ]/,
 			lWidth: /[ilｉｌ]/,
-			ura: /\s*[\(（]裏[\)）]$/
+			ura: /\s*[\(（]裏[\)）]$/,
+			cjk: /[\u3040-ゞ゠-ヾ一-\u9ffe]/
 		}
 		
 		var numbersFull = "０１２３４５６７８９"
@@ -78,10 +79,12 @@
 			this.numbersFullToHalf[numbersFull[i]] = numbersHalf[i]
 			this.numbersFullToHalf[numbersHalf[i]] = numbersHalf[i]
 		}
+		this.wrapOn = [" ", "\n", "%s"]
+		this.stickySymbols = "!,.:;?~‐–‼、。々〜ぁぃぅぇぉっゃゅょァィゥェォッャュョ・ーヽヾ！：；？"
 		
-		this.songFrameCache = new CanvasCache()
-		this.diffStarCache = new CanvasCache()
-		this.crownCache = new CanvasCache()
+		this.songFrameCache = new CanvasCache(noSmoothing)
+		this.diffStarCache = new CanvasCache(noSmoothing)
+		this.crownCache = new CanvasCache(noSmoothing)
 		
 		this.tmpCanvas = document.createElement("canvas")
 		this.tmpCtx = this.tmpCanvas.getContext("2d")
@@ -818,6 +821,163 @@
 		ctx.restore()
 	}
 	
+	wrappingText(config){
+		var ctx = config.ctx
+		var inputText = config.text.toString()
+		var words = []
+		var start = 0
+		var substituteIndex = 0
+		while(start < inputText.length){
+			var character = inputText.slice(start, start + 1)
+			if(words.length !== 0){
+				var previous = words[words.length - 1]
+				if(!previous.substitute && previous !== "\n" && this.stickySymbols.indexOf(character) !== -1){
+					words[words.length - 1] += character
+					start++
+					continue
+				}
+			}
+			var index = Infinity
+			var currentIndex = inputText.slice(start).search(this.regex.cjk)
+			if(currentIndex !== -1){
+				index = start + currentIndex
+				var on = inputText.charAt(index)
+			}
+			for(var i = 0; i < this.wrapOn.length; i++){
+				var currentIndex = inputText.indexOf(this.wrapOn[i], start)
+				if(currentIndex !== -1 && currentIndex < index){
+					var on = this.wrapOn[i]
+					index = currentIndex
+				}
+			}
+			if(index === Infinity){
+				if(start !== inputText.length){
+					words.push(inputText.slice(start, inputText.length))
+				}
+				break
+			}
+			var end = index + (on === " " ? 1 : 0)
+			if(start !== end){
+				words.push(inputText.slice(start, end))
+			}
+			if(on === "%s" && config.substitute){
+				words.push({
+					substitute: true,
+					index: substituteIndex,
+					width: config.substitute(config, substituteIndex, true) || 0
+				})
+				substituteIndex++
+			}else if(on !== " "){
+				words.push(on)
+			}
+			start = index + on.length
+		}
+		
+		ctx.save()
+		
+		var bold = this.bold(config.fontFamily)
+		ctx.font = bold + config.fontSize + "px " + config.fontFamily
+		ctx.textBaseline = config.baseline || "top"
+		ctx.textAlign = "left"
+		ctx.fillStyle = config.fill
+		var lineHeight = config.lineHeight || config.fontSize
+		
+		var x = 0
+		var y = 0
+		var totalW = 0
+		var totalH = 0
+		var line = ""
+		var toDraw = []
+		var lastWidth = 0
+		
+		var addToDraw = obj => {
+			toDraw.push(obj)
+			if(x + lastWidth > totalW){
+				totalW = x + lastWidth
+			}
+			if(y + lineHeight > totalH){
+				totalH = y + lineHeight
+			}
+		}
+		var recenter = () => {
+			if(config.textAlign === "center"){
+				for(var j in toDraw){
+					if(toDraw[j].y === y){
+						toDraw[j].x += (config.width - x - lastWidth) / 2
+					}
+				}
+			}
+		}
+		
+		for(var i in words){
+			var skip = words[i].substitute || words[i] === "\n"
+			if(!skip){
+				var currentWidth = ctx.measureText(line + words[i]).width
+			}
+			if(skip || (x !== 0 || line) && x + currentWidth > config.width){
+				if(line){
+					addToDraw({
+						text: line,
+						x: x, y: y
+					})
+				}
+				if(words[i].substitute){
+					line = ""
+					var currentWidth = words[i].width
+					if(x + lastWidth + currentWidth > config.width){
+						recenter()
+						x = 0
+						y += lineHeight
+						lastWidth = 0
+					}
+					addToDraw({
+						substitute: true,
+						index: words[i].index,
+						x: x + lastWidth, y: y
+					})
+					x += lastWidth + currentWidth
+					lastWidth = currentWidth
+				}else{
+					recenter()
+					x = 0
+					y += lineHeight
+					line = words[i] === "\n" ? "" : words[i]
+					lastWidth = ctx.measureText(line).width
+				}
+			}else{
+				line += words[i]
+				lastWidth = currentWidth
+			}
+		}
+		if(line){
+			addToDraw({
+				text: line,
+				x: x, y: y
+			})
+			recenter()
+		}
+		
+		var addX = 0
+		var addY = 0
+		if(config.verticalAlign === "middle"){
+			addY = ((config.height || 0) - totalH) / 2
+		}
+		for(var i in toDraw){
+			var x = config.x + toDraw[i].x + addX
+			var y = config.y + toDraw[i].y + addY
+			if(toDraw[i].text){
+				ctx.fillText(toDraw[i].text, x, y)
+			}else if(toDraw[i].substitute){
+				ctx.save()
+				ctx.translate(x, y)
+				config.substitute(config, toDraw[i].index)
+				ctx.restore()
+			}
+		}
+		
+		ctx.restore()
+	}
+	
 	diffIcon(config){
 		var ctx = config.ctx
 		var scale = config.scale

public/src/js/controller.js

@@ -7,6 +7,16 @@ class Controller{
 		this.touchEnabled = touchEnabled
 		this.snd = this.multiplayer ? "_p" + this.multiplayer : ""
 		
+		this.calibrationMode = selectedSong.folder === "calibration"
+		this.audioLatency = 0
+		this.videoLatency = 0
+		if(!this.calibrationMode){
+			var latency = settings.getItem("latency")
+			if(!autoPlayEnabled){
+				this.audioLatency = Math.round(latency.audio) || 0
+			}
+			this.videoLatency = Math.round(latency.video) || 0 + this.audioLatency
+		}
 		if(this.multiplayer !== 2){
 			loader.changePage("game", false)
 		}
@@ -18,18 +28,40 @@ class Controller{
 		}
 		this.offset = this.parsedSongData.soundOffset
 
+		var maxCombo = this.parsedSongData.circles.filter(circle => ["don", "ka", "daiDon", "daiKa"].indexOf(circle.type) > -1 && (!circle.branch || circle.branch.name == "master")).length
+		if (maxCombo >= 50) {
+			var comboVoices = ["v_combo_50"].concat([...Array(Math.floor(maxCombo/100)).keys()].map(i => "v_combo_" + (i + 1)*100))
+			var promises = []
+
+			comboVoices.forEach(name => {
+				if (!assets.sounds[name + "_p1"]) {
+					promises.push(loader.loadSound(name + ".wav", snd.sfxGain).then(sound => {
+						assets.sounds[name + "_p1"] = assets.sounds[name].copy(snd.sfxGainL)
+						assets.sounds[name + "_p2"] = assets.sounds[name].copy(snd.sfxGainR)
+					}))
+				}
+			})
+
+			Promise.all(promises)
+		}
+		
+		if(this.calibrationMode){
+			this.volume = 1
+		}else{
 			assets.songs.forEach(song => {
 				if(song.id == this.selectedSong.folder){
 					this.mainAsset = song.sound
 					this.volume = song.volume || 1
 				}
 			})
+		}
 		
 		this.game = new Game(this, this.selectedSong, this.parsedSongData)
 		this.view = new View(this)
 		this.mekadon = new Mekadon(this, this.game)
 		this.keyboard = new GameInput(this)
 		
+		this.drumSounds = settings.getItem("latency").drumSounds
 		this.playedSounds = {}
 	}
 	run(syncWith){
@@ -72,8 +104,8 @@ class Controller{
 	}
 	stopMainLoop(){
 		this.mainLoopRunning = false
-		if(this.mainAsset){
-			this.mainAsset.stop()
+		if(this.game.mainAsset){
+			this.game.mainAsset.stop()
 		}
 		if(this.multiplayer !== 2){
 			clearInterval(this.gameInterval)
@@ -90,13 +122,18 @@ class Controller{
 			if(this.game.musicFadeOut < 3){
 				this.keyboard.checkMenuKeys()
 			}
+			if(this.calibrationMode){
+				this.game.calibration()
+			}
 			if(!this.game.isPaused()){
 				this.keyboard.checkGameKeys()
 				
 				if(ms < 0){
 					this.game.updateTime()
 				}else{
+					if(!this.calibrationMode){
 						this.game.update()
+					}
 					if(!this.mainLoopRunning){
 						return
 					}
@@ -137,7 +174,7 @@ class Controller{
 		if(Math.round(score.gauge / 2) - 1 >= 25){
 			if(score.bad === 0){
 				vp = "fullcombo"
-				this.playSoundMeka("v_fullcombo", 1.350)
+				this.playSound("v_fullcombo", 1.350)
 			}else{
 				vp = "clear"
 			}
@@ -158,16 +195,23 @@ class Controller{
 		if(!fadeIn){
 			this.clean()
 		}
+		if(this.calibrationMode){
+			new SettingsView(this.touchEnabled, false, null, "latency")
+		}else{
 			new SongSelect(false, fadeIn, this.touchEnabled)
 		}
+	}
 	restartSong(){
 		this.clean()
 		if(this.multiplayer){
 			new LoadSong(this.selectedSong, false, true, this.touchEnabled)
 		}else{
 			new Promise(resolve => {
+				if(this.calibrationMode){
+					resolve()
+				}else{
 					var songObj = assets.songs.find(song => song.id === this.selectedSong.folder)
-				if(songObj.chart){
+					if(songObj.chart && songObj.chart !== "blank"){
 						var reader = new FileReader()
 						var promise = pageEvents.load(reader).then(event => {
 							this.songData = event.target.result.replace(/\0/g, "").split("\n")
@@ -181,31 +225,28 @@ class Controller{
 					}else{
 						resolve()
 					}
+				}
 			}).then(() => {
 				var taikoGame = new Controller(this.selectedSong, this.songData, this.autoPlayEnabled, false, this.touchEnabled)
 				taikoGame.run()
 			})
 		}
 	}
-	playSound(id, time){
+	playSound(id, time, noSnd){
+		if(!this.drumSounds && (id === "neiro_1_don" || id === "neiro_1_ka" || id === "se_don" || id === "se_ka")){
+			return
+		}
 		var ms = Date.now() + (time || 0) * 1000
 		if(!(id in this.playedSounds) || ms > this.playedSounds[id] + 30){
-			assets.sounds[id + this.snd].play(time)
+			assets.sounds[id + (noSnd ? "" : this.snd)].play(time)
 			this.playedSounds[id] = ms
 		}
 	}
-	playSoundMeka(soundID, time){
-		var meka = ""
-		if(this.autoPlayEnabled && !this.multiplayer){
-			meka = "_meka"
-		}
-		this.playSound(soundID + meka, time)
-	}
-	togglePause(){
+	togglePause(forcePause, pauseMove, noSound){
 		if(this.multiplayer === 1){
-			this.syncWith.game.togglePause()
+			this.syncWith.game.togglePause(forcePause, pauseMove, noSound)
 		}
-		this.game.togglePause()
+		this.game.togglePause(forcePause, pauseMove, noSound)
 	}
 	getKeys(){
 		return this.keyboard.getKeys()

public/src/js/game.js

@@ -45,7 +45,12 @@ class Game{
 	}
 	initTiming(){
 		// Date when the chrono is started (before the game begins)
-		var offsetTime = Math.max(0, this.timeForDistanceCircle - this.songData.circles[0].ms) |0
+		var firstCircle = this.songData.circles[0]
+		if(this.controller.calibrationMode){
+			var offsetTime = 0
+		}else{
+			var offsetTime = Math.max(0, this.timeForDistanceCircle - (firstCircle ? firstCircle.ms : 0)) |0
+		}
 		if(this.controller.multiplayer){
 			var syncWith = this.controller.syncWith
 			var syncCircles = syncWith.game.songData.circles
@@ -57,8 +62,8 @@ class Game{
 		this.startDate = Date.now() + offsetTime
 	}
 	update(){
-		// Main operations
 		this.updateTime()
+		// Main operations
 		this.updateCirclesStatus()
 		this.checkPlays()
 		// Event operations
@@ -82,14 +87,14 @@ class Game{
 			if(circle && (!circle.branch || circle.branch.active) && !circle.isPlayed){
 				var type = circle.type
 				var drumrollNotes = type === "balloon" || type === "drumroll" || type === "daiDrumroll"
-				var endTime = circle.endTime + (drumrollNotes ? 0 : this.rules.bad)
+				var endTime = circle.endTime + (drumrollNotes ? 0 : this.rules.bad) + this.controller.audioLatency
 				
-				if(ms >= circle.ms){
-					if(drumrollNotes && !circle.rendaPlayed && ms < endTime){
+				if(ms >= circle.ms + this.controller.audioLatency){
+					if(drumrollNotes && !circle.rendaPlayed && ms < endTime + this.controller.audioLatency){
 						circle.rendaPlayed = true
 						if(this.rules.difficulty === "easy"){
 							assets.sounds["v_renda" + this.controller.snd].stop()
-							this.controller.playSoundMeka("v_renda")
+							this.controller.playSound("v_renda")
 						}
 					}
 					if(!circle.beatMSCopied){
@@ -109,7 +114,7 @@ class Game{
 							this.updateCurrentCircle()
 							if(this.controller.multiplayer === 1){
 								var value = {
-									pace: (ms - circle.ms) / circle.timesHit
+									pace: (ms - circle.ms - this.controller.audioLatency) / circle.timesHit
 								}
 								if(type === "drumroll" || type === "daiDrumroll"){
 									value.kaAmount = circle.timesKa / circle.timesHit
@@ -211,7 +216,7 @@ class Game{
 		
 		for(var i = this.currentCircle + 1; i < circles.length; i++){
 			var circle = circles[i]
-			var relative = ms - circle.ms
+			var relative = ms - circle.ms - this.controller.audioLatency
 			if(!circle.branch || circle.branch.active){
 				if((!circleIsNote(circle) || relative < -this.rules.bad)){
 					break
@@ -310,7 +315,7 @@ class Game{
 		
 		var keyTime = this.controller.getKeyTime()
 		var currentTime = keysDon ? keyTime["don"] : keyTime["ka"]
-		var relative = currentTime - circle.ms
+		var relative = currentTime - circle.ms - this.controller.audioLatency
 		
 		if(relative >= this.rules.ok){
 			var fixedNote = this.fixNoteStream(keysDon)
@@ -366,7 +371,7 @@ class Game{
 			if(this.controller.multiplayer === 1){
 				var value = {
 					score: score,
-					ms: circle.ms - currentTime,
+					ms: circle.ms - currentTime - this.controller.audioLatency,
 					dai: typeDai ? (keyDai ? 2 : 1) : 0
 				}
 				if((!keysDon || !typeDon) && (!keysKa || !typeKa)){
@@ -375,7 +380,7 @@ class Game{
 				p2.send("note", value)
 			}
 		}else{
-			if(circle.ms > currentTime || currentTime > circle.endTime){
+			if(circle.ms + this.controller.audioLatency > currentTime || currentTime > circle.endTime + this.controller.audioLatency){
 				return true
 			}
 			if(keysDon && type === "balloon"){
@@ -400,7 +405,7 @@ class Game{
 			circle.played(score)
 			if(this.controller.multiplayer == 1){
 				p2.send("drumroll", {
-					pace: (this.elapsedTime - circle.ms) / circle.timesHit
+					pace: (this.elapsedTime - circle.ms + this.controller.audioLatency) / circle.timesHit
 				})
 			}
 		}else{
@@ -447,17 +452,19 @@ class Game{
 		var ms = this.elapsedTime
 		if(!this.lastCircle){
 			var circles = this.songData.circles
-			this.lastCircle = circles[circles.length - 1].endTime
+			var circle = circles[circles.length - 1]
+			this.lastCircle = circle ? circle.endTime : 0
 			if(this.controller.multiplayer){
 				var syncWith = this.controller.syncWith
 				var syncCircles = syncWith.game.songData.circles
-				var syncLastCircle = syncCircles[syncCircles.length - 1].endTime
+				circle = syncCircles[syncCircles.length - 1]
+				var syncLastCircle = circle ? circle.endTime : 0
 				if(syncLastCircle > this.lastCircle){
 					this.lastCircle = syncLastCircle
 				}
 			}
 		}
-		if(!this.fadeOutStarted && ms >= this.lastCircle + 2000){
+		if(!this.fadeOutStarted && ms >= this.lastCircle + 2000 + this.controller.audioLatency){
 			this.fadeOutStarted = ms
 			if(this.controller.multiplayer){
 				this.controller.syncWith.game.fadeOutStarted = ms
@@ -495,28 +502,51 @@ class Game{
 	playMainMusic(){
 		var ms = this.elapsedTime + this.controller.offset
 		if(!this.mainMusicPlaying && (!this.fadeOutStarted || ms < this.fadeOutStarted + 1600)){
-			if(this.controller.multiplayer !== 2 && this.mainAsset){
+			if(this.calibrationState === "audio"){
+				var beatInterval = this.controller.view.beatInterval
+				var startAt = ms % beatInterval
+				var duration = this.mainAsset.duration * 1000
+				if(startAt < duration){
+					this.mainAsset.playLoop(0, false, startAt / 1000, 0, beatInterval / 1000)
+				}else{
+					this.mainAsset.playLoop((startAt - duration) / 1000, false, 0, 0, beatInterval / 1000)
+				}
+			}else if(this.controller.multiplayer !== 2 && this.mainAsset){
 				this.mainAsset.play((ms < 0 ? -ms : 0) / 1000, false, Math.max(0, ms / 1000))
 			}
 			this.mainMusicPlaying = true
 		}
 	}
-	togglePause(){
+	togglePause(forcePause, pauseMove, noSound){
 		if(!this.paused){
-			assets.sounds["se_pause"].play()
+			if(forcePause === false){
+				return
+			}
+			if(!noSound){
+				this.controller.playSound("se_pause", 0, true)
+			}
 			this.paused = true
 			this.latestDate = Date.now()
 			if(this.mainAsset){
 				this.mainAsset.stop()
 			}
 			this.mainMusicPlaying = false
-			this.view.pauseMove(0, true)
+			this.view.pauseMove(pauseMove || 0, true)
 			this.view.gameDiv.classList.add("game-paused")
 			this.view.lastMousemove = this.view.getMS()
 			this.view.cursorHidden = false
 			pageEvents.send("pause")
-		}else{
-			assets.sounds["se_cancel"].play()
+		}else if(!forcePause){
+			if(forcePause !== false && this.calibrationState && ["audioHelp", "audioComplete", "videoHelp", "videoComplete", "results"].indexOf(this.calibrationState) !== -1){
+				return
+			}
+			if(this.calibrationState === "audioHelp" || this.calibrationState === "videoHelp"){
+				this.calibrationState = this.calibrationState === "audioHelp" ? "audio" : "video"
+				this.controller.view.pauseOptions = strings.pauseOptions
+				this.controller.playSound("se_don", 0, true)
+			}else if(!noSound){
+				this.controller.playSound("se_cancel", 0, true)
+			}
 			this.paused = false
 			var currentDate = Date.now()
 			this.startDate += currentDate - this.latestDate
@@ -579,8 +609,8 @@ class Game{
 		if(this.combo > this.globalScore.maxCombo){
 			this.globalScore.maxCombo = this.combo
 		}
-		if(this.combo === 50 || this.combo > 0 && this.combo % 100 === 0 && this.combo < 1500 || this.combo > 0 && this.combo % 500 === 0){
-			this.controller.playSoundMeka("v_combo_" + (this.combo <= 1400 ? this.combo : "over1500"))
+		if(this.combo === 50 || this.combo > 0 && this.combo % 100 === 0 && this.combo <= 5000){
+			this.controller.playSound("v_combo_" + this.combo)
 		}
 		if (this.songData.scoremode == 2 && this.combo > 0 && this.combo % 100 == 0) { 
 			this.globalScore.points += 10000;
@@ -683,7 +713,7 @@ class Game{
 		if(!circle || circle.branch === currentBranch[pastActive]){
 			var ms = this.elapsedTime
 			var closestCircle = circles.findIndex(circle => {
-				return (!circle.branch || circle.branch.active) && circle.endTime >= ms
+				return (!circle.branch || circle.branch.active) && circle.endTime + this.controller.audioLatency >= ms
 			})
 			if(closestCircle !== -1){
 				this.currentCircle = closestCircle
@@ -701,4 +731,104 @@ class Game{
 		this.sectionNotes = []
 		this.sectionDrumroll = 0
 	}
+	clearKeyTime(){
+		var keyboard = this.controller.keyboard
+		for(var key in keyboard.keyTime){
+			keyboard.keys[key] = null
+			keyboard.keyTime[key] = -Infinity
+		}
+	}
+	calibration(){
+		var view = this.controller.view
+		if(!this.calibrationState){
+			this.controller.parsedSongData.measures = []
+			this.calibrationProgress = {
+				audio: 0,
+				video: 0,
+				requirement: 40
+			}
+			this.calibrationReset("audio", true)
+		}
+		var progress = this.calibrationProgress
+		var state = this.calibrationState
+		switch(state){
+			case "audio":
+			case "video":
+				if(state === "audio" && !this.mainAsset){
+					this.mainAsset = assets.sounds["se_calibration"]
+					this.mainMusicPlaying = false
+				}
+				if(progress.hit >= progress.requirement){
+					var reduced = 0
+					for(var i = 2; i < progress.offsets.length; i++){
+						reduced += progress.offsets[i]
+					}
+					progress[state] = Math.max(0, Math.round(reduced / progress.offsets.length - 2))
+					this.calibrationState += "Complete"
+					view.pauseOptions = []
+					this.clearKeyTime()
+					this.togglePause(true, 1)
+					this.mainAsset = null
+				}
+				break
+			case "audioComplete":
+			case "videoComplete":
+				if(Date.now() - this.latestDate > 3000){
+					var audioComplete = this.calibrationState === "audioComplete"
+					this.controller.playSound("se_pause", 0, true)
+					if(audioComplete){
+						this.calibrationReset("video")
+					}else{
+						view.pauseOptions = [
+							strings.calibration.retryPrevious,
+							strings.calibration.finish
+						]
+					}
+					this.calibrationState = audioComplete ? "videoHelp" : "results"
+				}
+				break
+		}
+	}
+	calibrationHit(ms){
+		var progress = this.calibrationProgress
+		var beatInterval = this.controller.view.beatInterval
+		var current = Math.floor((ms + 100) / beatInterval)
+		if(current !== progress.last){
+			var offset = ((ms + 100) % beatInterval) - 100
+			var offsets = progress.offsets
+			if(offsets.length >= progress.requirement){
+				offsets.shift()
+			}
+			offsets.push(offset)
+			progress.hit++
+			progress.last = current
+			this.globalScore.gauge = 100 / (progress.requirement / progress.hit)
+		}
+	}
+	calibrationReset(to, togglePause){
+		var view = this.controller.view
+		this.songData.circles = []
+		view.pauseOptions = [
+			to === "audio" ? strings.calibration.back : strings.calibration.retryPrevious,
+			strings.calibration.start
+		]
+		this.calibrationState = to + "Help"
+		var progress = this.calibrationProgress
+		progress.offsets = []
+		progress.hit = 0
+		progress.last = null
+		this.globalScore.gauge = 0
+		if(to === "video"){
+			this.clearKeyTime()
+			this.initTiming()
+			this.latestDate = this.startDate
+			this.elapsedTime = 0
+			view.ms = 0
+		}
+		if(togglePause){
+			this.togglePause(true, 1, true)
+		}else{
+			view.pauseMove(1, true)
+		}
+	}
 }

public/src/js/gameinput.js

@@ -94,7 +94,7 @@ class GameInput{
 		}
 	}
 	checkMenuKeys(){
-		if(!this.controller.multiplayer && !this.locked){
+		if(!this.controller.multiplayer && !this.locked && this.controller.view.pauseOptions.length !== 0){
 			var moveMenu = 0
 			var ms = this.game.getAccurateTime()
 			this.gamepadMenu.play((pressed, name) => {
@@ -146,7 +146,7 @@ class GameInput{
 			this.checkKey("don_l", "menu", moveMenuConfirm)
 			this.checkKey("don_r", "menu", moveMenuConfirm)
 			if(moveMenu && this.game.isPaused()){
-				assets.sounds["se_ka"].play()
+				this.controller.playSound("se_ka", 0, true)
 				this.controller.view.pauseMove(moveMenu)
 			}
 		}
@@ -197,11 +197,19 @@ class GameInput{
 				return
 			}
 			this.keyTime[name] = ms
+			var calibrationState = this.game.calibrationState
+			var calibration = calibrationState && !this.game.paused
 			if(name == "don_l" || name == "don_r"){
+				if(calibration){
+					this.game.calibrationHit(ms)
+				}else{
 					this.checkKeySound(name, "don")
+				}
 				this.keyboardEvents++
 			}else if(name == "ka_l" || name == "ka_r"){
+				if(!calibration){
 					this.checkKeySound(name, "ka")
+				}
 				this.keyboardEvents++
 			}
 		}else{

public/src/js/loadsong.js

@@ -35,14 +35,20 @@ class LoadSong{
 		var song = this.selectedSong
 		var id = song.folder
 		var promises = []
+		if(song.folder !== "calibration"){
 			assets.sounds["v_start"].play()
+			var songObj = assets.songs.find(song => song.id === id)
+		}else{
+			var songObj = {
+				"music": "muted",
+				"chart": "blank"
+			}
+		}
 		
 		song.songBg = this.randInt(1, 5)
 		song.songStage = this.randInt(1, 3)
 		song.donBg = this.randInt(1, 6)
 		
-		var songObj = assets.songs.find(song => song.id === id)
-		
 		if(song.songSkin && song.songSkin.name){
 			var imgLoad = []
 			for(var type in song.songSkin){
@@ -117,6 +123,9 @@ class LoadSong{
 			}
 		}))
 		if(songObj.chart){
+			if(songObj.chart === "blank"){
+				this.songData = ""
+			}else{
 				var reader = new FileReader()
 				promises.push(pageEvents.load(reader).then(event => {
 					this.songData = event.target.result.replace(/\0/g, "").split("\n")
@@ -126,6 +135,7 @@ class LoadSong{
 				}else{
 					reader.readAsText(songObj.chart)
 				}
+			}
 		}else{
 			promises.push(loader.ajax(this.getSongPath(song)).then(data => {
 				this.songData = data.replace(/\0/g, "").split("\n")

public/src/js/parsetja.js

@@ -25,6 +25,7 @@
 			"A": {name: "daiDon", txt: strings.note.daiDon},
 			"B": {name: "daiKa", txt: strings.note.daiKa}
 		}
+		this.noteTypes_ex = strings.ex_note;
 		this.courseTypes = {
 			"0": "easy",
 			"1": "normal",
@@ -122,7 +123,7 @@
 		return [string.slice(0, index), string.slice(index + delimiter.length)]
 	}
 	parseCircles(){
-		var meta = this.metadata[this.difficulty]
+		var meta = this.metadata[this.difficulty] || {}
 		var ms = (meta.offset || 0) * -1000 + this.offset
 		var bpm = Math.abs(meta.bpm) || 120
 		var scroll = 1
@@ -148,7 +149,32 @@
 		var circles = []
 		var circleID = 0
 		var regexAZ = /[A-Z]/
-		
+		var isAllDon = (note_chain, start_pos) => { 
+			for (var i = start_pos; i < note_chain.length; ++i) { 
+				var note = note_chain[i];
+				if (note && note.type !== "don" && note.type !== "daiDon") { 
+					return false;
+				}
+			}
+			return true;
+		}
+		var checkChain = (note_chain, measure_length, is_last) => {
+			//console.log(note_chain, measure_length, is_last);
+			/*if (measure_length >= 24) {
+				for (var note of note_chain) {
+					note.text = this.noteTypes_ex[note.type][0];
+				}
+			} else { */
+				var alldon_pos = null;
+				for (var i = 0; i < note_chain.length - (is_last ? 1 : 0); ++i) {
+					var note = note_chain[i];
+					if (alldon_pos === null && is_last && isAllDon(note_chain, i)) { 
+						alldon_pos = i;
+					}
+					note.text = this.noteTypes_ex[note.type][alldon_pos != null ? (i - alldon_pos) % 2 : 0];
+				}
+			//}
+		}
 		var pushMeasure = () => {
 			var note = currentMeasure[0]
 			if(note){
@@ -183,9 +209,11 @@
 					var msPerMeasure = 60000 * measure / note.bpm
 					ms += msPerMeasure / currentMeasure.length
 				}
-				for(var i = 0; i < currentMeasure.length; i++){
+				var note_chain = [];
+				for (var i = 0; i < currentMeasure.length; i++){
+					//console.log(note_chain.length);
 					var note = currentMeasure[i]
-					if(note.type){
+					if (note.type) {
 						circleID++
 						var circleObj = new Circle({
 							id: circleID,
@@ -200,12 +228,29 @@
 							branch: currentBranch,
 							section: note.section
 						})
-						if(lastDrumroll === note){
+						if (note.type === "don" || note.type === "ka" || note.type === "daiDon" || note.type === "daiKa") {
+							note_chain.push(circleObj);
+						} else { 
+							if (note_chain.length > 1 && currentMeasure.length >= 8) { 
+								checkChain(note_chain, currentMeasure.length, false);
+							}
+							note_chain = [];
+						} 
+						if (lastDrumroll === note) {
 							lastDrumroll = circleObj
 						}
 						
 						circles.push(circleObj)
+					} else if (!(currentMeasure.length >= 24 && (!currentMeasure[i + 1] || currentMeasure[i + 1].type))
+						&& !(currentMeasure.length >= 48 && (!currentMeasure[i + 2] || currentMeasure[i + 2].type || !currentMeasure[i + 3] || currentMeasure[i + 3].type))) { 
+						if (note_chain.length > 1 && currentMeasure.length >= 8) { 
+							checkChain(note_chain, currentMeasure.length, true);
 						}
+						note_chain = [];
+					}
+				}
+				if (note_chain.length > 1 && currentMeasure.length >= 8) { 
+					checkChain(note_chain, currentMeasure.length, false);
 				}
 			}else{
 				var msPerMeasure = 60000 * measure / bpm

public/src/js/scoresheet.js

@@ -10,6 +10,14 @@ class Scoresheet{
 		
 		this.canvas = document.getElementById("canvas")
 		this.ctx = this.canvas.getContext("2d")
+		var resolution = settings.getItem("resolution")
+		var noSmoothing = resolution === "low" || resolution === "lowest"
+		if(noSmoothing){
+			this.ctx.imageSmoothingEnabled = false
+		}
+		if(resolution === "lowest"){
+			this.canvas.style.imageRendering = "pixelated"
+		}
 		this.game = document.getElementById("game")
 		
 		this.fadeScreen = document.createElement("div")
@@ -28,8 +36,8 @@ class Scoresheet{
 		this.frame = 1000 / 60
 		this.numbers = "001122334455667788900112233445".split("")
 		
-		this.draw = new CanvasDraw()
-		this.canvasCache = new CanvasCache()
+		this.draw = new CanvasDraw(noSmoothing)
+		this.canvasCache = new CanvasCache(noSmoothing)
 		
 		this.keyboard = new Keyboard({
 			confirm: ["enter", "space", "esc", "don_l", "don_r"]
@@ -105,7 +113,7 @@ class Scoresheet{
 		if(!p2.session){
 			this.state.screen = "scoresShown"
 			this.state.screenMS = this.getMS()
-			assets.sounds["neiro_1_don"].play()
+			this.controller.playSound("neiro_1_don", 0, true)
 		}
 	}
 	toSongsel(fromP2){
@@ -114,7 +122,7 @@ class Scoresheet{
 			this.state.screen = "fadeOut"
 			this.state.screenMS = this.getMS()
 			if(!fromP2){
-				assets.sounds["neiro_1_don"].play()
+				this.controller.playSound("neiro_1_don", 0, true)
 			}
 		}
 	}

public/src/js/settings.js

@@ -2,11 +2,15 @@ class Settings{
 	constructor(){
 		var ios = /iPhone|iPad/.test(navigator.userAgent)
 		var phone = /Android|iPhone|iPad/.test(navigator.userAgent)
+		this.allLanguages = []
+		for(var i in allStrings){
+			this.allLanguages.push(i)
+		}
 		
 		this.items = {
 			language: {
 				type: "language",
-				options: ["ja", "en", "cn", "tw", "ko"],
+				options: this.allLanguages,
 				default: this.getLang()
 			},
 			resolution: {
@@ -34,6 +38,14 @@ class Settings{
 				options: ["a", "b", "c"],
 				default: "a",
 				gamepad: true
+			},
+			latency: {
+				type: "latency",
+				default: {
+					"audio": 0,
+					"video": 0,
+					"drumSounds": true
+				}
 			}
 		}
 		
@@ -61,6 +73,22 @@ class Settings{
 							}
 						}
 						this.storage[i] = obj
+					}else if(current.type === "latency"){
+						var obj = {}
+						for(var j in current.default){
+							if(storage[i] && j in storage[i]){
+								if(j === "drumSounds"){
+									obj[j] = !!storage[i][j]
+									continue
+								}else if(!isNaN(storage[i][j])){
+									obj[j] = Math.round(parseFloat(storage[i][j]) || 0)
+									continue
+								}
+							}
+							obj = null
+							break
+						}
+						this.storage[i] = obj
 					}else{
 						this.storage[i] = storage[i]
 					}
@@ -107,7 +135,7 @@ class Settings{
 				}
 			}
 		}
-		return "ja"
+		return this.allLanguages[0]
 	}
 	setLang(lang, noEvent){
 		strings = lang
@@ -122,7 +150,7 @@ class Settings{
 }
 
 class SettingsView{
-	constructor(touchEnabled, tutorial, songId){
+	constructor(touchEnabled, tutorial, songId, toSetting){
 		this.touchEnabled = touchEnabled
 		this.tutorial = tutorial
 		this.songId = songId
@@ -130,9 +158,15 @@ class SettingsView{
 		loader.changePage("settings", tutorial)
 		assets.sounds["bgm_settings"].playLoop(0.1, false, 0, 1.392, 26.992)
 		this.defaultButton = document.getElementById("settings-default")
+		this.viewOuter = this.getElement("view-outer")
 		if(touchEnabled){
-			this.getElement("view-outer").classList.add("touch-enabled")
+			this.viewOuter.classList.add("touch-enabled")
 		}
+		this.touchEnd = []
+		pageEvents.add(this.viewOuter, ["mouseup", "touchend"], event => {
+			this.touchEnd.forEach(func => func(event))
+		})
+		
 		var gamepadEnabled = false
 		if("getGamepads" in navigator){
 			var gamepads = navigator.getGamepads()
@@ -145,19 +179,22 @@ class SettingsView{
 		}
 		this.mode = "settings"
 		
+		this.pressedKeys = {}
 		this.keyboard = new Keyboard({
 			"confirm": ["enter", "space", "don_l", "don_r"],
 			"up": ["up"],
-			"previous": ["left", "ka_l"],
-			"next": ["right", "down", "ka_r"],
+			"right": ["right", "ka_r"],
+			"down": ["down"],
+			"left": ["left", "ka_l"],
 			"back": ["esc"],
 			"other": ["wildcard"]
 		}, this.keyPressed.bind(this))
 		this.gamepad = new Gamepad({
 			"confirm": ["b", "ls", "rs"],
 			"up": ["u", "lsu"],
-			"previous": ["l", "lb", "lt", "lsl"],
-			"next": ["d", "r", "rb", "rt", "lsd", "lsr"],
+			"right": ["r", "rb", "rt", "lsr"],
+			"down": ["d", "lsd"],
+			"left": ["l", "lb", "lt", "lsl"],
 			"back": ["start", "a"]
 		}, this.keyPressed.bind(this))
 		
@@ -182,15 +219,15 @@ class SettingsView{
 			var nameDiv = document.createElement("div")
 			nameDiv.classList.add("setting-name", "stroke-sub")
 			var name = strings.settings[i].name
-			nameDiv.innerText = name
-			nameDiv.setAttribute("alt", name)
+			this.setAltText(nameDiv, name)
 			settingBox.appendChild(nameDiv)
 			var valueDiv = document.createElement("div")
 			valueDiv.classList.add("setting-value")
 			this.getValue(i, valueDiv)
 			settingBox.appendChild(valueDiv)
 			content.appendChild(settingBox)
-			if(this.items.length === this.selected){
+			if(!toSetting && this.items.length === this.selected || toSetting === i){
+				this.selected = this.items.length
 				settingBox.classList.add("selected")
 			}
 			this.addTouch(settingBox, event => this.setValue(i))
@@ -226,8 +263,99 @@ class SettingsView{
 		this.gamepadButtons = document.getElementById("gamepad-buttons")
 		this.gamepadValue = document.getElementById("gamepad-value")
 		
+		this.latencySettings = document.getElementById("settings-latency")
+		this.addTouch(this.latencySettings, event => {
+			if(event.target === event.currentTarget){
+				this.latencyBack()
+			}
+		})
+		this.latencyTitle = this.latencySettings.getElementsByClassName("view-title")[0]
+		this.latencyItems = []
+		this.latencySelected = 0
+		var latencyContent = this.latencySettings.getElementsByClassName("view-content")[0]
+		var latencyWindow = ["calibration", "audio", "video", "drumSounds"]
+		for(let i in latencyWindow){
+			let current = latencyWindow[i]
+			var settingBox = document.createElement("div")
+			settingBox.classList.add("setting-box")
+			var nameDiv = document.createElement("div")
+			nameDiv.classList.add("setting-name", "stroke-sub")
+			var name = strings.settings.latency[current]
+			this.setAltText(nameDiv, name)
+			settingBox.appendChild(nameDiv)
+			let outputObject = {
+				id: current,
+				settingBox: settingBox,
+				nameDiv: nameDiv
+			}
+			if(current === "calibration"){
+				nameDiv.style.width = "100%"
+			}else{
+				var valueDiv = document.createElement("div")
+				valueDiv.classList.add("setting-value")
+				settingBox.appendChild(valueDiv)
+				var valueText = document.createTextNode("")
+				valueDiv.appendChild(valueText)
+				this.latencyGetValue(current, valueText)
+				if(current !== "drumSounds"){
+					var buttons = document.createElement("div")
+					buttons.classList.add("latency-buttons")
+					var buttonMinus = document.createElement("span")
+					buttonMinus.innerText = "-"
+					buttons.appendChild(buttonMinus)
+					this.addTouchRepeat(buttonMinus, event => {
+						this.latencySetAdjust(outputObject, -1)
+					})
+					var buttonPlus = document.createElement("span")
+					buttonPlus.innerText = "+"
+					buttons.appendChild(buttonPlus)
+					this.addTouchRepeat(buttonPlus, event => {
+						this.latencySetAdjust(outputObject, 1)
+					})
+					valueDiv.appendChild(buttons)
+				}
+			}
+			latencyContent.appendChild(settingBox)
+			if(this.latencyItems.length === this.latencySelected){
+				settingBox.classList.add("selected")
+			}
+			this.addTouch(settingBox, event => {
+				if(event.target.tagName !== "SPAN"){
+					this.latencySetValue(current, event.type === "touchstart")
+				}
+			})
+			if(current !== "calibration"){
+				outputObject.valueDiv = valueDiv
+				outputObject.valueText = valueText
+				outputObject.buttonMinus = buttonMinus
+				outputObject.buttonPlus = buttonPlus
+			}
+			this.latencyItems.push(outputObject)
+		}
+		this.latencyDefaultButton = document.getElementById("latency-default")
+		this.latencyItems.push({
+			id: "default",
+			settingBox: this.latencyDefaultButton
+		})
+		this.addTouch(this.latencyDefaultButton, event => this.latencyDefault())
+		this.latencyEndButton = this.latencySettings.getElementsByClassName("view-end-button")[0]
+		this.latencyItems.push({
+			id: "back",
+			settingBox: this.latencyEndButton
+		})
+		this.addTouch(this.latencyEndButton, event => this.latencyBack(true))
+		
 		this.setStrings()
 		
+		this.drumSounds = settings.getItem("latency").drumSounds
+		this.playedSounds = {}
+		this.redrawRunning = true
+		this.redrawBind = this.redraw.bind(this)
+		this.redraw()
+		if(toSetting === "latency"){
+			this.mode = "latency"
+			this.latencySet()
+		}
 		pageEvents.send("settings")
 	}
 	getElement(name){
@@ -246,6 +374,23 @@ class SettingsView{
 			callback(event)
 		})
 	}
+	addTouchRepeat(element, callback){
+		this.addTouch(element, event => {
+			var active = true
+			var func = () => {
+				active = false
+				this.touchEnd.splice(this.touchEnd.indexOf(func), 1)
+			}
+			this.touchEnd.push(func)
+			var repeat = delay => {
+				if(active){
+					callback()
+					setTimeout(() => repeat(50), delay)
+				}
+			}
+			repeat(400)
+		})
+	}
 	removeTouch(element){
 		pageEvents.remove(element, ["mousedown", "touchstart"])
 	}
@@ -274,6 +419,17 @@ class SettingsView{
 				valueDiv.appendChild(keyDiv)
 			}
 			return
+		}else if(current.type === "latency"){
+			var audioVideo = [Math.round(value.audio), Math.round(value.video)]
+			var latencyValue = strings.settings[name].value.split("%s")
+			var latencyIndex = 0
+			value = ""
+			latencyValue.forEach((string, i) => {
+				if(i !== 0){
+					value += this.addMs(audioVideo[latencyIndex++])
+				}
+				value += string
+			})
 		}
 		valueDiv.innerText = value
 	}
@@ -285,6 +441,7 @@ class SettingsView{
 		if(this.mode !== "settings"){
 			if(this.selected === selectedIndex){
 				this.keyboardBack(selected)
+				this.playSound("se_don")
 			}
 			return
 		}
@@ -303,24 +460,37 @@ class SettingsView{
 			selected.valueDiv.classList.add("selected")
 			this.keyboardKeys = {}
 			this.keyboardSet()
-			assets.sounds["se_don"].play()
+			this.playSound("se_don")
 			return
 		}else if(current.type === "gamepad"){
 			this.mode = "gamepad"
 			this.gamepadSelected = current.options.indexOf(value)
 			this.gamepadSet()
-			assets.sounds["se_don"].play()
+			this.playSound("se_don")
+			return
+		}else if(current.type === "latency"){
+			this.mode = "latency"
+			this.latencySet()
+			this.playSound("se_don")
 			return
 		}
 		settings.setItem(name, value)
 		this.getValue(name, this.items[this.selected].valueDiv)
-		assets.sounds["se_ka"].play()
+		this.playSound("se_ka")
 		if(current.type === "language"){
 			this.setLang(allStrings[value])
 		}
 	}
-	keyPressed(pressed, name, event){
-		if(!pressed){
+	keyPressed(pressed, name, event, repeat){
+		if(pressed){
+			if(!this.pressedKeys[name]){
+				this.pressedKeys[name] = this.getMS() + 300
+			}
+		}else{
+			this.pressedKeys[name] = 0
+			return
+		}
+		if(repeat && name !== "up" && name !== "right" && name !== "down" && name !== "left"){
 			return
 		}
 		this.touched = false
@@ -334,31 +504,31 @@ class SettingsView{
 				}else{
 					this.setValue(selected.id)
 				}
-			}else if(name === "up" || name === "previous" || name === "next"){
+			}else if(name === "up" || name === "right" || name === "down" || name === "left"){
 				selected.settingBox.classList.remove("selected")
 				do{
-					this.selected = this.mod(this.items.length, this.selected + (name === "next" ? 1 : -1))
-				}while(this.items[this.selected].id === "default" && name !== "previous")
+					this.selected = this.mod(this.items.length, this.selected + ((name === "right" || name === "down") ? 1 : -1))
+				}while(this.items[this.selected].id === "default" && name !== "left")
 				selected = this.items[this.selected]
 				selected.settingBox.classList.add("selected")
 				selected.settingBox.scrollIntoView()
-				assets.sounds["se_ka"].play()
+				this.playSound("se_ka")
 			}else if(name === "back"){
 				this.onEnd()
 			}
 		}else if(this.mode === "gamepad"){
 			if(name === "confirm"){
 				this.gamepadBack(true)
-			}else if(name === "up" || name === "previous" || name === "next"){
-				this.gamepadSet(name === "next" ? 1 : -1)
+			}else if(name === "up" || name === "right" || name === "down" || name === "left"){
+				this.gamepadSet((name === "right" || name === "down") ? 1 : -1)
 			}else if(name === "back"){
 				this.gamepadBack()
 			}
 		}else if(this.mode === "keyboard"){
 			if(name === "back"){
 				this.keyboardBack(selected)
-				assets.sounds["se_cancel"].play()
-			}else{
+				this.playSound("se_cancel")
+			}else if(event){
 				event.preventDefault()
 				var currentKey = event.key.toLowerCase()
 				for(var i in this.keyboardKeys){
@@ -367,10 +537,40 @@ class SettingsView{
 					}
 				}
 				var current = this.keyboardCurrent
-				assets.sounds[current === "ka_l" || current === "ka_r" ? "se_ka" : "se_don"].play()
+				this.playSound(current === "ka_l" || current === "ka_r" ? "se_ka" : "se_don")
 				this.keyboardKeys[current] = [currentKey]
 				this.keyboardSet()
 			}
+		}else if(this.mode === "latency"){
+			var latencySelected = this.latencyItems[this.latencySelected]
+			if(name === "confirm"){
+				if(latencySelected.id === "back"){
+					this.latencyBack(true)
+				}else if(latencySelected.id === "default"){
+					this.latencyDefault()
+				}else{
+					this.latencySetValue(latencySelected.id)
+				}
+			}else if(name === "up" || name === "right" || name === "down" || name === "left"){
+				latencySelected.settingBox.classList.remove("selected")
+				do{
+					this.latencySelected = this.mod(this.latencyItems.length, this.latencySelected + ((name === "right" || name === "down") ? 1 : -1))
+				}while(this.latencyItems[this.latencySelected].id === "default" && name !== "left")
+				latencySelected = this.latencyItems[this.latencySelected]
+				latencySelected.settingBox.classList.add("selected")
+				latencySelected.settingBox.scrollIntoView()
+				this.playSound("se_ka")
+			}else if(name === "back"){
+				this.latencyBack()
+			}
+		}else if(this.mode === "latencySet"){
+			var latencySelected = this.latencyItems[this.latencySelected]
+			if(name === "confirm" || name === "back"){
+				this.latencySetBack(latencySelected)
+				this.playSound(name === "confirm" ? "se_don" : "se_cancel")
+			}else if(name === "up" || name === "right" || name === "down" || name === "left"){
+				this.latencySetAdjust(latencySelected, (name === "up" || name === "right") ? 1 : -1)
+			}
 		}
 	}
 	keyboardSet(){
@@ -416,14 +616,13 @@ class SettingsView{
 		var current = settings.items[selected.id]
 		if(diff){
 			this.gamepadSelected = this.mod(current.options.length, this.gamepadSelected + diff)
-			assets.sounds["se_ka"].play()
+			this.playSound("se_ka")
 		}
 		var opt = current.options[this.gamepadSelected]
 		var value = strings.settings[selected.id][opt]
-		this.gamepadValue.innerText = value
-		this.gamepadValue.setAttribute("alt", value)
-		this.gamepadButtons.style.backgroundPosition = "0 " + (-318 - 132 * this.gamepadSelected) + "px"
-		this.gamepadSettings.style.display = "block"
+		this.setAltText(this.gamepadValue, value)
+		this.gamepadButtons.style.backgroundPosition = "0 " + (-11.87 - 4.93 * this.gamepadSelected) + "em"
+		this.gamepadSettings.style.display = "flex"
 	}
 	gamepadBack(confirm){
 		if(this.mode !== "gamepad"){
@@ -433,10 +632,142 @@ class SettingsView{
 		var current = settings.items[selected.id]
 		settings.setItem(selected.id, current.options[this.gamepadSelected])
 		this.getValue(selected.id, selected.valueDiv)
-		assets.sounds[confirm ? "se_don" : "se_cancel"].play()
+		this.playSound(confirm ? "se_don" : "se_cancel")
 		this.gamepadSettings.style.display = ""
 		this.mode = "settings"
 	}
+	latencySet(){
+		if(this.mode !== "latency"){
+			return
+		}
+		var selected = this.items[this.selected]
+		var current = settings.items[selected.id]
+		this.latencySettings.style.display = "flex"
+	}
+	latencyGetValue(name, valueText){
+		var currentLatency = settings.getItem("latency")
+		if(name === "drumSounds"){
+			valueText.data = currentLatency[name] ? strings.settings.on : strings.settings.off
+		}else{
+			valueText.data = this.addMs(currentLatency[name] || 0)
+		}
+	}
+	latencySetValue(name, touched){
+		var selectedIndex = this.latencyItems.findIndex(item => item.id === name)
+		var selected = this.latencyItems[selectedIndex]
+		if(this.mode === "latencySet"){
+			this.latencySetBack(this.latencyItems[this.latencySelected])
+			if(this.latencySelected === selectedIndex){
+				this.playSound("se_don")
+				return
+			}
+		}else if(this.mode !== "latency"){
+			return
+		}
+		if(name === "calibration"){
+			this.playSound("se_don")
+			this.clean()
+			new LoadSong({
+				"title": strings.calibration.title,
+				"folder": "calibration",
+				"type": "tja",
+				"songSkin": {}
+			}, false, false, touched)
+		}else if(name === "drumSounds"){
+			this.drumSounds = !settings.getItem("latency")[name]
+			this.latencySave(name, this.drumSounds)
+			this.latencyGetValue(name, selected.valueText)
+			this.playSound("se_don")
+		}else{
+			var value = Math.round(settings.getItem("latency")[name] || 0)
+			if(this.latencySelected !== selectedIndex){
+				this.latencyItems[this.latencySelected].settingBox.classList.remove("selected")
+				this.latencySelected = selectedIndex
+				selected.settingBox.classList.add("selected")
+			}
+			this.mode = "latencySet"
+			selected.settingBox.style.animation = "none"
+			selected.valueDiv.classList.add("selected")
+			selected.value = value
+			this.playSound("se_don")
+		}
+	}
+	latencySetAdjust(selected, add){
+		selected.value += add
+		if(selected.value > 500){
+			selected.value = 500
+		}else if(selected.value < -200){
+			selected.value = -200
+		}else{
+			this.playSound("se_ka")
+		}
+		selected.valueText.data = this.addMs(selected.value)
+	}
+	latencySetBack(selected){
+		this.mode = "latency"
+		selected.settingBox.style.animation = ""
+		selected.valueDiv.classList.remove("selected")
+		this.latencySave(selected.id, selected.value)
+		this.latencyGetValue(selected.id, selected.valueText)
+	}
+	latencySave(id, value){
+		var input = settings.getItem("latency")
+		var output = {}
+		for(var i in input){
+			if(i === id){
+				output[i] = value
+			}else{
+				output[i] = input[i]
+			}
+		}
+		settings.setItem("latency", output)
+	}
+	latencyDefault(){
+		if(this.mode === "latencySet"){
+			this.latencySetBack(this.latencyItems[this.latencySelected])
+		}else if(this.mode !== "latency"){
+			return
+		}
+		settings.setItem("latency", null)
+		this.latencyItems.forEach(item => {
+			if(item.id === "audio" || item.id === "video" || item.id === "drumSounds"){
+				this.latencyGetValue(item.id, item.valueText)
+			}
+		})
+		this.drumSounds = settings.getItem("latency").drumSounds
+		this.playSound("se_don")
+	}
+	latencyBack(confirm){
+		if(this.mode === "latencySet"){
+			this.latencySetBack(this.latencyItems[this.latencySelected])
+			if(!confirm){
+				this.playSound("se_don")
+				return
+			}
+		}
+		if(this.mode !== "latency"){
+			return
+		}
+		var selected = this.items[this.selected]
+		var current = settings.items[selected.id]
+		this.getValue(selected.id, selected.valueDiv)
+		this.playSound(confirm ? "se_don" : "se_cancel")
+		this.latencySettings.style.display = ""
+		this.mode = "settings"
+	}
+	addMs(input){
+		var split = strings.calibration.ms.split("%s")
+		var index = 0
+		var output = ""
+		var inputStrings = [(input > 0 ? "+" : "") + input.toString()]
+		split.forEach((string, i) => {
+			if(i !== 0){
+				output += inputStrings[index++]
+			}
+			output += string
+		})
+		return output
+	}
 	defaultSettings(){
 		if(this.mode === "keyboard"){
 			this.keyboardBack(this.items[this.selected])
@@ -447,11 +778,17 @@ class SettingsView{
 		this.setLang(allStrings[settings.getItem("language")])
 		this.keyboard.update()
 		pageEvents.setKbd()
-		assets.sounds["se_don"].play()
+		this.latencyItems.forEach(item => {
+			if(item.id === "audio" || item.id === "video" || item.id === "drumSounds"){
+				this.latencyGetValue(item.id, item.valueText)
+			}
+		})
+		this.drumSounds = settings.getItem("latency").drumSounds
+		this.playSound("se_don")
 	}
 	onEnd(){
 		this.clean()
-		assets.sounds["se_don"].play()
+		this.playSound("se_don")
 		setTimeout(() => {
 			if(this.tutorial && !this.touched){
 				new Tutorial(false, this.songId)
@@ -472,41 +809,94 @@ class SettingsView{
 			var item = this.items[i]
 			if(item.valueDiv){
 				var name = strings.settings[item.id].name
-				item.nameDiv.innerText = name
-				item.nameDiv.setAttribute("alt", name)
+				this.setAltText(item.nameDiv, name)
 				this.getValue(item.id, item.valueDiv)
 			}
 		}
+		for(var i in this.latencyItems){
+			var current = this.latencyItems[i]
+			if(current.nameDiv){
+				this.setAltText(current.nameDiv, strings.settings.latency[current.id])
+			}
+			if(current.valueText){
+				this.latencyGetValue(current.id, current.valueText)
+			}
+		}
 		this.setStrings()
 	}
 	setStrings(){
-		this.viewTitle.innerText = strings.gameSettings
-		this.viewTitle.setAttribute("alt", strings.gameSettings)
-		this.endButton.innerText = strings.settings.ok
-		this.endButton.setAttribute("alt", strings.settings.ok)
-		this.gamepadTitle.innerText = strings.settings.gamepadLayout.name
-		this.gamepadTitle.setAttribute("alt", strings.settings.gamepadLayout.name)
-		this.gamepadEndButton.innerText = strings.settings.ok
-		this.gamepadEndButton.setAttribute("alt", strings.settings.ok)
-		this.defaultButton.innerText = strings.settings.default
-		this.defaultButton.setAttribute("alt", strings.settings.default)
+		this.setAltText(this.viewTitle, strings.gameSettings)
+		this.setAltText(this.endButton, strings.settings.ok)
+		this.setAltText(this.gamepadTitle, strings.settings.gamepadLayout.name)
+		this.setAltText(this.gamepadEndButton, strings.settings.ok)
+		this.setAltText(this.latencyTitle, strings.settings.latency.name)
+		this.setAltText(this.latencyDefaultButton, strings.settings.default)
+		this.setAltText(this.latencyEndButton, strings.settings.ok)
+		this.setAltText(this.defaultButton, strings.settings.default)
+	}
+	setAltText(element, text){
+		element.innerText = text
+		element.setAttribute("alt", text)
 	}
 	mod(length, index){
 		return ((index % length) + length) % length
 	}
+	playSound(id, time){
+		if(!this.drumSounds && (id === "se_don" || id === "se_ka" || id === "se_cancel")){
+			return
+		}
+		var ms = Date.now() + (time || 0) * 1000
+		if(!(id in this.playedSounds) || ms > this.playedSounds[id] + 30){
+			assets.sounds[id].play(time)
+			this.playedSounds[id] = ms
+		}
+	}
+	redraw(){
+		if(!this.redrawRunning){
+			return
+		}
+		requestAnimationFrame(this.redrawBind)
+		var ms = this.getMS()
+		
+		for(var key in this.pressedKeys){
+			if(this.pressedKeys[key]){
+				if(ms >= this.pressedKeys[key] + 50){
+					this.keyPressed(true, key, null, true)
+					this.pressedKeys[key] = ms
+				}
+			}
+		}
+	}
+	getMS(){
+		return Date.now()
+	}
 	clean(){
+		this.redrawRunning = false
 		this.keyboard.clean()
 		this.gamepad.clean()
 		assets.sounds["bgm_settings"].stop()
+		pageEvents.remove(this.viewOuter, ["mouseup", "touchend"])
 		for(var i in this.items){
 			this.removeTouch(this.items[i].settingBox)
 		}
+		for(var i in this.latencyItems){
+			this.removeTouch(this.latencyItems[i].settingBox)
+			if(this.latencyItems[i].buttonMinus){
+				this.removeTouch(this.latencyItems[i].buttonMinus)
+				this.removeTouch(this.latencyItems[i].buttonPlus)
+			}
+		}
 		if(this.defaultButton){
 			delete this.defaultButton
 		}
 		this.removeTouch(this.gamepadSettings)
 		this.removeTouch(this.gamepadEndButton)
 		this.removeTouch(this.gamepadBox)
+		this.removeTouch(this.latencySettings)
+		this.removeTouch(this.latencyDefaultButton)
+		this.removeTouch(this.latencyEndButton)
+		delete this.viewOuter
+		delete this.touchEnd
 		delete this.tutorialTitle
 		delete this.endButton
 		delete this.items
@@ -516,6 +906,11 @@ class SettingsView{
 		delete this.gamepadBox
 		delete this.gamepadButtons
 		delete this.gamepadValue
+		delete this.latencyItems
+		delete this.latencySettings
+		delete this.latencyTitle
+		delete this.latencyDefaultButton
+		delete this.latencyEndButton
 		if(this.resolution !== settings.getItem("resolution")){
 			for(var i in assets.image){
 				if(i === "touch_drum" || i.startsWith("bg_song_") || i.startsWith("bg_stage_") || i.startsWith("bg_don_")){

public/src/js/songselect.js

@@ -5,6 +5,14 @@ class SongSelect{
 		loader.changePage("songselect", false)
 		this.canvas = document.getElementById("song-sel-canvas")
 		this.ctx = this.canvas.getContext("2d")
+		var resolution = settings.getItem("resolution")
+		var noSmoothing = resolution === "low" || resolution === "lowest"
+		if(noSmoothing){
+			this.ctx.imageSmoothingEnabled = false
+		}
+		if(resolution === "lowest"){
+			this.canvas.style.imageRendering = "pixelated"
+		}
 
 		this.songSkin = {
 			"selected": {
@@ -209,13 +217,13 @@ class SongSelect{
 		}]
 		this.optionsList = [strings.none, strings.auto, strings.netplay]
 		
-		this.draw = new CanvasDraw()
-		this.songTitleCache = new CanvasCache()
-		this.selectTextCache = new CanvasCache()
-		this.categoryCache = new CanvasCache()
-		this.difficultyCache = new CanvasCache()
-		this.sessionCache = new CanvasCache()
-		this.currentSongCache = new CanvasCache()
+		this.draw = new CanvasDraw(noSmoothing)
+		this.songTitleCache = new CanvasCache(noSmoothing)
+		this.selectTextCache = new CanvasCache(noSmoothing)
+		this.categoryCache = new CanvasCache(noSmoothing)
+		this.difficultyCache = new CanvasCache(noSmoothing)
+		this.sessionCache = new CanvasCache(noSmoothing)
+		this.currentSongCache = new CanvasCache(noSmoothing)
 		
 		this.difficulty = [strings.easy, strings.normal, strings.hard, strings.oni]
 		this.difficultyId = ["easy", "normal", "hard", "oni", "ura"]
@@ -236,6 +244,9 @@ class SongSelect{
 			fromTutorial = false
 		}
 		
+		this.drumSounds = settings.getItem("latency").drumSounds
+		this.playedSounds = {}
+		
 		var songIdIndex = -1
 		if(fromTutorial){
 			this.selectedSong = this.songs.findIndex(song => song.action === fromTutorial)
@@ -254,7 +265,7 @@ class SongSelect{
 			}else if((!p2.session || fadeIn) && "selectedSong" in localStorage){
 				this.selectedSong = Math.min(Math.max(0, localStorage["selectedSong"] |0), this.songs.length - 1)
 			}
-			assets.sounds[songIdIndex !== -1 ? "v_diffsel" : "v_songsel"].play()
+			this.playSound(songIdIndex !== -1 ? "v_diffsel" : "v_songsel")
 			snd.musicGain.fadeOut()
 			this.playBgm(false)
 		}
@@ -453,7 +464,7 @@ class SongSelect{
 				window.open(this.songs[this.selectedSong].maker.url)
 			}else if(moveBy === this.diffOptions.length + 4){
 				this.state.ura = !this.state.ura
-				assets.sounds["se_ka"].play()
+				this.playSound("se_ka")
 				if(this.selectedDiff === this.diffOptions.length + 4 && !this.state.ura){
 					this.state.move = -1
 				}
@@ -581,7 +592,7 @@ class SongSelect{
 			var soundsDelay = Math.abs((scroll + resize) / moveBy)
 			
 			for(var i = 0; i < Math.abs(moveBy) - 1; i++){
-				assets.sounds["se_ka"].play((resize + i * soundsDelay) / 1000)
+				this.playSound("se_ka", (resize + i * soundsDelay) / 1000)
 			}
 			this.pointer(false)
 		}
@@ -605,7 +616,7 @@ class SongSelect{
 			this.state.move = moveBy
 			this.state.moveMS = this.getMS() - 500
 			this.state.locked = 1
-			assets.sounds["se_ka"].play()
+			this.playSound("se_ka")
 		}
 	}
 	
@@ -636,15 +647,15 @@ class SongSelect{
 					this.selectedDiff = this.diffOptions.length + 3
 				}
 				
-				assets.sounds["se_don"].play()
+				this.playSound("se_don")
 				assets.sounds["v_songsel"].stop()
-				assets.sounds["v_diffsel"].play(0.3)
+				this.playSound("v_diffsel", 0.3)
 				pageEvents.send("song-select-difficulty", currentSong)
 			}else if(currentSong.action === "back"){
 				this.clean()
 				this.toTitleScreen()
 			}else if(currentSong.action === "random"){
-				assets.sounds["se_don"].play()
+				this.playSound("se_don")
 				this.state.locked = true
 				do{
 					var i = Math.floor(Math.random() * this.songs.length)
@@ -681,7 +692,7 @@ class SongSelect{
 			this.state.moveHover = null
 			
 			assets.sounds["v_diffsel"].stop()
-			assets.sounds["se_cancel"].play()
+			this.playSound("se_cancel")
 		}
 		this.clearHash()
 		pageEvents.send("song-select-back")
@@ -690,7 +701,7 @@ class SongSelect{
 		this.clean()
 		var selectedSong = this.songs[this.selectedSong]
 		assets.sounds["v_diffsel"].stop()
-		assets.sounds["se_don"].play()
+		this.playSound("se_don")
 		
 		try{
 			if(assets.customSongs){
@@ -729,7 +740,7 @@ class SongSelect{
 	}
 	toOptions(moveBy){
 		if(!p2.session){
-			assets.sounds["se_ka"].play()
+			this.playSound("se_ka")
 			this.selectedDiff = 1
 			do{
 				this.state.options = this.mod(this.optionsList.length, this.state.options + moveBy)
@@ -738,7 +749,7 @@ class SongSelect{
 	}
 	toTitleScreen(){
 		if(!p2.session){
-			assets.sounds["se_cancel"].play()
+			this.playSound("se_cancel")
 			this.clean()
 			setTimeout(() => {
 				new Titlescreen()
@@ -746,21 +757,21 @@ class SongSelect{
 		}
 	}
 	toTutorial(){
-		assets.sounds["se_don"].play()
+		this.playSound("se_don")
 		this.clean()
 		setTimeout(() => {
 			new Tutorial(true)
 		}, 500)
 	}
 	toAbout(){
-		assets.sounds["se_don"].play()
+		this.playSound("se_don")
 		this.clean()
 		setTimeout(() => {
 			new About(this.touchEnabled)
 		}, 500)
 	}
 	toSettings(){
-		assets.sounds["se_don"].play()
+		this.playSound("se_don")
 		this.clean()
 		setTimeout(() => {
 			new SettingsView(this.touchEnabled)
@@ -775,7 +786,7 @@ class SongSelect{
 		}else{
 			localStorage["selectedSong"] = this.selectedSong
 
-			assets.sounds["se_don"].play()
+			this.playSound("se_don")
 			this.clean()
 			setTimeout(() => {
 				new Session(this.touchEnabled)
@@ -786,7 +797,7 @@ class SongSelect{
 		if(assets.customSongs){
 			assets.customSongs = false
 			assets.songs = assets.songsDefault
-			assets.sounds["se_don"].play()
+			this.playSound("se_don")
 			this.clean()
 			setTimeout(() => {
 				new SongSelect("browse", false, this.touchEnabled)
@@ -1014,6 +1025,7 @@ class SongSelect{
 			var resize2 = changeSpeed - resize
 			var scroll = resize2 - resize - scrollDelay * 2
 			var elapsed = ms - this.state.moveMS
+
 			if(this.state.catJump || (this.state.move && ms > this.state.moveMS + resize2 - scrollDelay)){
 				var isJump = this.state.catJump
 				var previousSelectedSong = this.selectedSong
@@ -2116,6 +2128,17 @@ class SongSelect{
 		}
 	}
 	
+	playSound(id, time){
+		if(!this.drumSounds && (id === "se_don" || id === "se_ka" || id === "se_cancel")){
+			return
+		}
+		var ms = Date.now() + (time || 0) * 1000
+		if(!(id in this.playedSounds) || ms > this.playedSounds[id] + 30){
+			assets.sounds[id].play(time)
+			this.playedSounds[id] = ms
+		}
+	}
+	
 	getMS(){
 		return Date.now()
 	}

public/src/js/strings.js

@@ -50,6 +50,22 @@
 		daiDrumroll: "連打(大)ーっ!!",
 		balloon: "ふうせん"
 	}
+	this.ex_note = {
+		don: [
+			"ド",
+			"コ"
+		],
+		ka: [
+			"カ"
+		],
+		daiDon: [
+			"ドン(大)",
+			"ドン(大)"
+		],
+		daiKa: [
+			"カッ(大)"
+		]
+	}
 	this.combo = "コンボ"
 	this.clear = "クリア"
 	this.good = "良"
@@ -127,11 +143,42 @@
 			b: "タイプB",
 			c: "タイプC"
 		},
+		latency: {
+			name: "Latency",
+			value: "Audio: %s, Video: %s",
+			calibration: "Latency Calibration",
+			audio: "Audio",
+			video: "Video",
+			drumSounds: "Drum Sounds"
+		},
 		on: "オン",
 		off: "オフ",
 		default: "既定値にリセット",
 		ok: "OK"
 	}
+	this.calibration = {
+		title: "Latency Calibration",
+		ms: "%sms",
+		back: "Back to Settings",
+		retryPrevious: "Retry Previous",
+		start: "Start",
+		finish: "Finish",
+		audioHelp: {
+			title: "Audio Latency Calibration",
+			content: "Listen to a sound playing in the background.\n\nHit the surface of the drum (%s or %s) as you hear it!",
+			contentAlt: "Listen to a sound playing in the background.\n\nHit the surface of the drum as you hear it!"
+		},
+		audioComplete: "Audio Latency Calibration completed!",
+		videoHelp: {
+			title: "Video Latency Calibration",
+			content: "This time there will be no sounds.\n\nInstead, watch for notes blinking on the circle-shaped frame, hit the drum as they appear!"
+		},
+		videoComplete: "Video Latency Calibration completed!",
+		results: {
+			title: "Latency Calibration Results",
+			content: "Audio latency: %s\nVideo latency: %s\n\nYou can configure these latency values in the settings."
+		}
+	}
 	this.browserSupport = {
 		browserWarning: "サポートされていないブラウザを実行しています (%s)",
 		details: "詳しく",
@@ -195,6 +242,22 @@ function StringsEn(){
 		daiDrumroll: "DRUM ROLLー!!",
 		balloon: "Balloon"
 	}
+	this.ex_note = {
+		don: [
+			"Do",
+			"Do"
+		],
+		ka: [
+			"Ka"
+		],
+		daiDon: [
+			"DON",
+			"DON"
+		],
+		daiKa: [
+			"KA"
+		]
+	}
 	this.combo = "Combo"
 	this.clear = "Clear"
 	this.good = "GOOD"
@@ -272,11 +335,42 @@ function StringsEn(){
 			b: "Type B",
 			c: "Type C"
 		},
+		latency: {
+			name: "Latency",
+			value: "Audio: %s, Video: %s",
+			calibration: "Latency Calibration",
+			audio: "Audio",
+			video: "Video",
+			drumSounds: "Drum Sounds"
+		},
 		on: "On",
 		off: "Off",
 		default: "Reset to Defaults",
 		ok: "OK"
 	}
+	this.calibration = {
+		title: "Latency Calibration",
+		ms: "%sms",
+		back: "Back to Settings",
+		retryPrevious: "Retry Previous",
+		start: "Start",
+		finish: "Finish",
+		audioHelp: {
+			title: "Audio Latency Calibration",
+			content: "Listen to a sound playing in the background.\n\nHit the surface of the drum (%s or %s) as you hear it!",
+			contentAlt: "Listen to a sound playing in the background.\n\nHit the surface of the drum as you hear it!"
+		},
+		audioComplete: "Audio Latency Calibration completed!",
+		videoHelp: {
+			title: "Video Latency Calibration",
+			content: "This time there will be no sounds.\n\nInstead, watch for notes blinking on the circle-shaped frame, hit the drum as they appear!"
+		},
+		videoComplete: "Video Latency Calibration completed!",
+		results: {
+			title: "Latency Calibration Results",
+			content: "Audio latency: %s\nVideo latency: %s\n\nYou can configure these latency values in the settings."
+		}
+	}
 	this.browserSupport = {
 		browserWarning: "You are running an unsupported browser (%s)",
 		details: "Details...",
@@ -340,6 +434,22 @@ function StringsCn(){
 		daiDrumroll: "连打(大)ー!!",
 		balloon: "气球"
 	}
+	this.ex_note = {
+		don: [
+			"咚",
+			"咚"
+		],
+		ka: [
+			"咔"
+		],
+		daiDon: [
+			"咚(大)",
+			"咚(大)"
+		],
+		daiKa: [
+			"咔(大)"
+		]
+	}
 	this.combo = "连段"
 	this.clear = "通关"
 	this.good = "良"
@@ -417,11 +527,42 @@ function StringsCn(){
 			b: "类型B",
 			c: "类型C"
 		},
+		latency: {
+			name: "Latency",
+			value: "Audio: %s, Video: %s",
+			calibration: "Latency Calibration",
+			audio: "Audio",
+			video: "Video",
+			drumSounds: "Drum Sounds"
+		},
 		on: "开",
 		off: "关",
 		default: "重置为默认值",
 		ok: "确定"
 	}
+	this.calibration = {
+		title: "Latency Calibration",
+		ms: "%sms",
+		back: "Back to Settings",
+		retryPrevious: "Retry Previous",
+		start: "Start",
+		finish: "Finish",
+		audioHelp: {
+			title: "Audio Latency Calibration",
+			content: "Listen to a sound playing in the background.\n\nHit the surface of the drum (%s or %s) as you hear it!",
+			contentAlt: "Listen to a sound playing in the background.\n\nHit the surface of the drum as you hear it!"
+		},
+		audioComplete: "Audio Latency Calibration completed!",
+		videoHelp: {
+			title: "Video Latency Calibration",
+			content: "This time there will be no sounds.\n\nInstead, watch for notes blinking on the circle-shaped frame, hit the drum as they appear!"
+		},
+		videoComplete: "Video Latency Calibration completed!",
+		results: {
+			title: "Latency Calibration Results",
+			content: "Audio latency: %s\nVideo latency: %s\n\nYou can configure these latency values in the settings."
+		}
+	}
 	this.browserSupport = {
 		browserWarning: "You are running an unsupported browser (%s)",
 		details: "Details...",
@@ -485,6 +626,22 @@ function StringsTw(){
 		daiDrumroll: "連打(大)ー!!",
 		balloon: "氣球"
 	}
+	this.ex_note = {
+		don: [
+			"咚",
+			"咚"
+		],
+		ka: [
+			"咔"
+		],
+		daiDon: [
+			"咚(大)",
+			"咚(大)"
+		],
+		daiKa: [
+			"咔(大)"
+		]
+	}
 	this.combo = "連段"
 	this.clear = "通關"
 	this.good = "良"
@@ -562,11 +719,42 @@ function StringsTw(){
 			b: "類型B",
 			c: "類型C"
 		},
+		latency: {
+			name: "Latency",
+			value: "Audio: %s, Video: %s",
+			calibration: "Latency Calibration",
+			audio: "Audio",
+			video: "Video",
+			drumSounds: "Drum Sounds"
+		},
 		on: "開",
 		off: "關",
 		default: "重置為默認值",
 		ok: "確定"
 	}
+	this.calibration = {
+		title: "Latency Calibration",
+		ms: "%sms",
+		back: "Back to Settings",
+		retryPrevious: "Retry Previous",
+		start: "Start",
+		finish: "Finish",
+		audioHelp: {
+			title: "Audio Latency Calibration",
+			content: "Listen to a sound playing in the background.\n\nHit the surface of the drum (%s or %s) as you hear it!",
+			contentAlt: "Listen to a sound playing in the background.\n\nHit the surface of the drum as you hear it!"
+		},
+		audioComplete: "Audio Latency Calibration completed!",
+		videoHelp: {
+			title: "Video Latency Calibration",
+			content: "This time there will be no sounds.\n\nInstead, watch for notes blinking on the circle-shaped frame, hit the drum as they appear!"
+		},
+		videoComplete: "Video Latency Calibration completed!",
+		results: {
+			title: "Latency Calibration Results",
+			content: "Audio latency: %s\nVideo latency: %s\n\nYou can configure these latency values in the settings."
+		}
+	}
 	this.browserSupport = {
 		browserWarning: "You are running an unsupported browser (%s)",
 		details: "Details...",
@@ -630,6 +818,22 @@ function StringsKo(){
 		daiDrumroll: "연타(대)ー!!",
 		balloon: "풍선"
 	}
+	this.ex_note = {
+		don: [
+			"쿠",
+			"쿠"
+		],
+		ka: [
+			"딱"
+		],
+		daiDon: [
+			"쿵(대)",
+			"쿵(대)"
+		],
+		daiKa: [
+			"딱(대)"
+		]
+	}
 	this.combo = "콤보"
 	this.clear = "클리어"
 	this.good = "얼쑤"
@@ -707,11 +911,42 @@ function StringsKo(){
 			b: "타입 B",
 			c: "타입 C"
 		},
+		latency: {
+			name: "Latency",
+			value: "Audio: %s, Video: %s",
+			calibration: "Latency Calibration",
+			audio: "Audio",
+			video: "Video",
+			drumSounds: "Drum Sounds"
+		},
 		on: "온",
 		off: "오프",
 		default: "기본값으로 재설정",
 		ok: "확인"
 	}
+	this.calibration = {
+		title: "Latency Calibration",
+		ms: "%sms",
+		back: "Back to Settings",
+		retryPrevious: "Retry Previous",
+		start: "Start",
+		finish: "Finish",
+		audioHelp: {
+			title: "Audio Latency Calibration",
+			content: "Listen to a sound playing in the background.\n\nHit the surface of the drum (%s or %s) as you hear it!",
+			contentAlt: "Listen to a sound playing in the background.\n\nHit the surface of the drum as you hear it!"
+		},
+		audioComplete: "Audio Latency Calibration completed!",
+		videoHelp: {
+			title: "Video Latency Calibration",
+			content: "This time there will be no sounds.\n\nInstead, watch for notes blinking on the circle-shaped frame, hit the drum as they appear!"
+		},
+		videoComplete: "Video Latency Calibration completed!",
+		results: {
+			title: "Latency Calibration Results",
+			content: "Audio latency: %s\nVideo latency: %s\n\nYou can configure these latency values in the settings."
+		}
+	}
 	this.browserSupport = {
 		browserWarning: "You are running an unsupported browser (%s)",
 		details: "Details...",

public/src/js/view.js

@@ -4,8 +4,15 @@
 		
 		this.canvas = document.getElementById("canvas")
 		this.ctx = this.canvas.getContext("2d")
+		var resolution = settings.getItem("resolution")
+		var noSmoothing = resolution === "low" || resolution === "lowest"
+		if(noSmoothing){
+			this.ctx.imageSmoothingEnabled = false
+		}
+		if(resolution === "lowest"){
+			this.canvas.style.imageRendering = "pixelated"
+		}
 		
-		this.cursor = document.getElementById("cursor")
 		this.gameDiv = document.getElementById("game")
 		this.songBg = document.getElementById("songbg")
 		this.songStage = document.getElementById("song-stage")
@@ -73,6 +80,7 @@
 		}
 		this.nextBeat = 0
 		this.gogoTime = 0
+		this.gogoTimeStarted = -Infinity
 		this.drumroll = []
 		this.touchEvents = 0
 		if(this.controller.parsedSongData.branches){
@@ -103,16 +111,20 @@
 			}
 		}
 		
+		if(this.controller.calibrationMode){
+			this.beatInterval = 512
+		}else{
 			this.beatInterval = this.controller.parsedSongData.beatInfo.beatInterval
+		}
 		this.font = strings.font
 		
-		this.draw = new CanvasDraw()
+		this.draw = new CanvasDraw(noSmoothing)
 		this.assets = new ViewAssets(this)
 		
-		this.titleCache = new CanvasCache()
-		this.comboCache = new CanvasCache()
-		this.pauseCache = new CanvasCache()
-		this.branchCache = new CanvasCache()
+		this.titleCache = new CanvasCache(noSmoothing)
+		this.comboCache = new CanvasCache(noSmoothing)
+		this.pauseCache = new CanvasCache(noSmoothing)
+		this.branchCache = new CanvasCache(noSmoothing)
 		
 		this.multiplayer = this.controller.multiplayer
 		
@@ -120,6 +132,9 @@
 		this.touch = -Infinity
 		this.touchAnimation = settings.getItem("touchAnimation")
 		
+		versionDiv.classList.add("version-hide")
+		loader.screen.parentNode.insertBefore(versionDiv, loader.screen)
+		
 		if(this.multiplayer !== 2){
 			
 			if(this.controller.touchEnabled){
@@ -134,7 +149,6 @@
 				pageEvents.add(this.canvas, "touchstart", this.ontouch.bind(this))
 				
 				this.gameDiv.classList.add("touch-visible")
-				document.getElementById("version").classList.add("version-hide")
 				
 				this.touchFullBtn = document.getElementById("touch-full-btn")
 				pageEvents.add(this.touchFullBtn, "touchend", toggleFullscreen)
@@ -444,12 +458,14 @@
 			ctx.fill()
 			
 			// Difficulty
+			if(this.controller.selectedSong.difficulty){
 				ctx.drawImage(assets.image["difficulty"],
 					0, 144 * this.difficulty[this.controller.selectedSong.difficulty],
 					168, 143,
 					126, this.multiplayer === 2 ? 497 : 228,
 					62, 53
 				)
+			}
 			
 			// Badges
 			if(this.controller.autoPlayEnabled && !this.controller.multiplayer){
@@ -593,6 +609,7 @@
 			ctx.globalAlpha = 1
 			
 			// Difficulty
+			if(this.controller.selectedSong.difficulty){
 				ctx.drawImage(assets.image["difficulty"],
 					0, 144 * this.difficulty[this.controller.selectedSong.difficulty],
 					168, 143,
@@ -611,6 +628,7 @@
 				ctx.strokeText(text, 87, this.multiplayer === 2 ? 310 : 348)
 				ctx.fillText(text, 87, this.multiplayer === 2 ? 310 : 348)
 				ctx.miterLimit = 10
+			}
 			
 			// Badges
 			if(this.controller.autoPlayEnabled && !this.controller.multiplayer){
@@ -947,6 +965,20 @@
 		ctx.clip()
 		
 		this.drawCircles(this.controller.getCircles())
+		if(this.controller.game.calibrationState === "video"){
+			if(ms % this.beatInterval < 1000 / 60 * 5){
+				this.drawCircle({
+					ms: ms,
+					type: "don",
+					endTime: ms + 100,
+					speed: 0
+				}, {
+					x: this.slotPos.x,
+					y: this.slotPos.y
+				})
+			}
+		}
+		
 		ctx.restore()
 		
 		// Hit notes explosion
@@ -1001,6 +1033,22 @@
 				ctx.translate(frameLeft, frameTop)
 			}
 			
+			var state = this.controller.game.calibrationState
+			if(state && state in strings.calibration){
+				var boldTitle = strings.calibration[state].title
+			}
+			if(boldTitle){
+				this.draw.layeredText({
+					ctx: ctx,
+					text: boldTitle,
+					fontSize: 35,
+					fontFamily: this.font,
+					x: 300,
+					y: 70
+				}, [
+					{outline: "#fff", letterBorder: 22}
+				])
+			}
 			var pauseRect = (ctx, mul) => {
 				this.draw.roundedRect({
 					ctx: ctx,
@@ -1025,7 +1073,186 @@
 				dx: 68,
 				dy: 11
 			})
+			if(boldTitle){
+				this.draw.layeredText({
+					ctx: ctx,
+					text: boldTitle,
+					fontSize: 35,
+					fontFamily: this.font,
+					x: 300,
+					y: 70
+				}, [
+					{outline: "#000", letterBorder: 10},
+					{fill: "#fff"}
+				])
+			}
 			
+			switch(state){
+				case "audioHelp":
+				case "videoHelp":
+				case "results":
+					var content = state === "audioHelp" && this.touchEnabled ? "contentAlt" : "content"
+					if(state === "audioHelp"){
+						var kbdSettings = settings.getItem("keyboardSettings")
+						var keys = [
+							kbdSettings.don_l[0].toUpperCase(),
+							kbdSettings.don_r[0].toUpperCase()
+						]
+						var substitute = (config, index, width) => {
+							var ctx = config.ctx
+							var bold = this.draw.bold(config.fontFamily)
+							ctx.font = bold + (config.fontSize * 0.66) + "px " + config.fontFamily
+							var w = config.fontSize * 0.6 + ctx.measureText(keys[index]).width
+							if(width){
+								return w
+							}else{
+								var h = 30
+								ctx.lineWidth = 3
+								ctx.strokeStyle = "rgba(0, 0, 0, 0.2)"
+								this.draw.roundedRect({
+									ctx: ctx,
+									x: 0, y: 1, w: w, h: h,
+									radius: 3
+								})
+								ctx.stroke()
+								ctx.strokeStyle = "#ccc"
+								ctx.fillStyle = "#fff"
+								this.draw.roundedRect({
+									ctx: ctx,
+									x: 0, y: 0, w: w, h: h,
+									radius: 3
+								})
+								ctx.stroke()
+								ctx.fill()
+								ctx.fillStyle = "#f7f7f7"
+								ctx.fillRect(2, 2, w - 4, h - 4)
+								
+								ctx.fillStyle = "#333"
+								ctx.textBaseline = "middle"
+								ctx.textAlign = "center"
+								ctx.fillText(keys[index], w / 2, h / 2)
+							}
+						}
+					}else if(state === "results"){
+						var progress = this.controller.game.calibrationProgress
+						var latency = [
+							progress.audio,
+							progress.video
+						]
+						var substitute = (config, index, width) => {
+							var ctx = config.ctx
+							var bold = this.draw.bold(config.fontFamily)
+							ctx.font = bold + (config.fontSize * 1.1) + "px " + config.fontFamily
+							var text = this.addMs(latency[index])
+							if(width){
+								return ctx.measureText(text).width
+							}else{
+								ctx.fillText(text, 0, 0)
+							}
+						}
+					}else{
+						var substitute = null
+					}
+					this.draw.wrappingText({
+						ctx: ctx,
+						text: strings.calibration[state][content],
+						fontSize: 30,
+						fontFamily: this.font,
+						x: 300,
+						y: 130,
+						width: 680,
+						height: 240,
+						lineHeight: 35,
+						fill: "#000",
+						verticalAlign: "middle",
+						substitute: substitute
+					})
+					
+					var _x = 640
+					var _w = 464
+					var _h = 80
+					for(var i = 0; i < this.pauseOptions.length; i++){
+						var text = this.pauseOptions[i]
+						var _y = 470 - 90 * (this.pauseOptions.length - i - 1)
+						if(this.state.moveHover !== null){
+							var selected = i === this.state.moveHover
+						}else{
+							var selected = i === this.state.pausePos
+						}
+						if(selected){
+							ctx.fillStyle = "#ffb447"
+							this.draw.roundedRect({
+								ctx: ctx,
+								x: _x - _w / 2,
+								y: _y,
+								w: _w,
+								h: _h,
+								radius: 30
+							})
+							ctx.fill()
+						}
+						if(selected){
+							var layers = [
+								{outline: "#000", letterBorder: 10},
+								{fill: "#fff"}
+							]
+						}else{
+							var layers = [
+								{fill: "#000"}
+							]
+						}
+						this.draw.layeredText({
+							ctx: ctx,
+							text: text,
+							x: _x,
+							y: _y + 18,
+							width: _w,
+							height: _h - 54,
+							fontSize: 40,
+							fontFamily: this.font,
+							letterSpacing: -1,
+							align: "center"
+						}, layers)
+						
+						var highlight = 0
+						if(this.state.moveHover === i){
+							highlight = 2
+						}else if(selected){
+							highlight = 1
+						}
+						if(highlight){
+							this.draw.highlight({
+								ctx: ctx,
+								x: _x - _w / 2 - 3.5,
+								y: _y - 3.5,
+								w: _w + 7,
+								h: _h + 7,
+								animate: highlight === 1,
+								animateMS: this.state.moveMS,
+								opacity: highlight === 2 ? 0.8 : 1,
+								radius: 30
+							})
+						}
+					}
+					break
+				case "audioComplete":
+				case "videoComplete":
+					this.draw.wrappingText({
+						ctx: ctx,
+						text: strings.calibration[state],
+						fontSize: 40,
+						fontFamily: this.font,
+						x: 300,
+						y: 130,
+						width: 680,
+						height: 420,
+						lineHeight: 47,
+						fill: "#000",
+						verticalAlign: "middle",
+						textAlign: "center",
+					})
+					break
+				default:
 					ctx.drawImage(assets.image["mimizu"],
 						313, 247, 136, 315
 					)
@@ -1034,6 +1261,10 @@
 					var _w = 80
 					var _h = 464
 					for(var i = 0; i < this.pauseOptions.length; i++){
+						var text = this.pauseOptions[i]
+						if(this.controller.calibrationMode && i === this.pauseOptions.length - 1){
+							text = strings.calibration.back
+						}
 						var _x = 520 + 110 * i
 						if(this.state.moveHover !== null){
 							var selected = i === this.state.moveHover
@@ -1058,11 +1289,11 @@
 							y: _y,
 							w: _w,
 							h: _h,
-					id: this.pauseOptions[i] + (selected ? "1" : "0")
+							id: text + (selected ? "1" : "0")
 						}, ctx => {
 							var textConfig = {
 								ctx: ctx,
-						text: this.pauseOptions[i],
+								text: text,
 								x: _w / 2,
 								y: 18,
 								width: _w,
@@ -1101,10 +1332,25 @@
 							})
 						}
 					}
+					break
+			}
 			
 			ctx.restore()
 		}
 	}
+	addMs(input){
+		var split = strings.calibration.ms.split("%s")
+		var index = 0
+		var output = ""
+		var inputStrings = [(input > 0 ? "+" : "") + input.toString()]
+		split.forEach((string, i) => {
+			if(i !== 0){
+				output += inputStrings[index++]
+			}
+			output += string
+		})
+		return output
+	}
 	setBackground(){
 		var selectedSong = this.controller.selectedSong
 		var songSkinName = selectedSong.songSkin.name
@@ -1219,10 +1465,10 @@
 		
 		measures.forEach(measure => {
 			var timeForDistance = this.posToMs(distanceForCircle, measure.speed)
-			var startingTime = measure.ms - timeForDistance
-			var finishTime = measure.ms + this.posToMs(this.slotPos.x - this.slotPos.paddingLeft + 3, measure.speed)
+			var startingTime = measure.ms - timeForDistance + this.controller.videoLatency
+			var finishTime = measure.ms + this.posToMs(this.slotPos.x - this.slotPos.paddingLeft + 3, measure.speed) + this.controller.videoLatency
 			if(measure.visible && (!measure.branch || measure.branch.active) && ms >= startingTime && ms <= finishTime){
-				var measureX = this.slotPos.x + this.msToPos(measure.ms - ms, measure.speed)
+				var measureX = this.slotPos.x + this.msToPos(measure.ms - ms + this.controller.videoLatency, measure.speed)
 				this.ctx.strokeStyle = measure.branchFirst ? "#ff0" : "#bdbdbd"
 				this.ctx.lineWidth = 3
 				this.ctx.beginPath()
@@ -1267,8 +1513,8 @@
 			var speed = circle.speed
 			
 			var timeForDistance = this.posToMs(distanceForCircle + this.slotPos.size / 2, speed)
-			var startingTime = circle.ms - timeForDistance
-			var finishTime = circle.endTime + this.posToMs(this.slotPos.x - this.slotPos.paddingLeft + this.slotPos.size * 2, speed)
+			var startingTime = circle.ms - timeForDistance + this.controller.videoLatency
+			var finishTime = circle.endTime + this.posToMs(this.slotPos.x - this.slotPos.paddingLeft + this.slotPos.size * 2, speed) + this.controller.videoLatency
 			
 			if(circle.isPlayed <= 0 || circle.score === 0){
 				if((!circle.branch || circle.branch.active) && ms >= startingTime && ms <= finishTime && circle.isPlayed !== -1){
@@ -1350,7 +1596,7 @@
 		
 		if(!circlePos){
 			circlePos = {
-				x: this.slotPos.x + this.msToPos(circleMs - ms, speed),
+				x: this.slotPos.x + this.msToPos(circleMs - ms + this.controller.videoLatency, speed),
 				y: this.slotPos.y
 			}
 		}
@@ -1388,10 +1634,10 @@
 				size = circleSize
 				faceID = noteFace.small
 				var h = size * 1.8
-				if(circleMs < ms && ms <= endTime){
+				if(circleMs + this.controller.audioLatency < ms && ms <= endTime + this.controller.audioLatency){
 					circlePos.x = this.slotPos.x
-				}else if(ms > endTime){
-					circlePos.x = this.slotPos.x + this.msToPos(endTime - ms, speed)
+				}else if(ms > endTime + this.controller.audioLatency){
+					circlePos.x = this.slotPos.x + this.msToPos(endTime - ms + this.controller.audioLatency, speed)
 				}
 				ctx.drawImage(assets.image["balloon"],
 					circlePos.x + size - 4,
@@ -1596,7 +1842,9 @@
 	}
 	toggleGogoTime(circle){
 		this.gogoTime = circle.gogoTime
+		if(circle.gogoTime || this.gogoTimeStarted !== -Infinity){
 			this.gogoTimeStarted = circle.ms
+		}
 		
 		if(this.gogoTime){
 			this.assets.fireworks.forEach(fireworksAsset => {
@@ -1789,21 +2037,62 @@
 		if(typeof pos === "undefined"){
 			pos = this.state.pausePos
 		}
+		var game = this.controller.game
+		var state = game.calibrationState
+		switch(state){
+			case "audioHelp":
+				pos = pos === 0 ? 2 : 0
+				break
+			case "videoHelp":
+				if(pos === 0){
+					assets.sounds["se_don"].play()
+					game.calibrationReset("audio")
+					return
+				}else{
+					pos = 0
+				}
+				break
+			case "results":
+				if(pos === 0){
+					assets.sounds["se_don"].play()
+					game.calibrationReset("video")
+					return
+				}else{
+					var input = settings.getItem("latency")
+					var output = {}
+					var progress = game.calibrationProgress
+					for(var i in input){
+						if(i === "audio" || i === "video"){
+							output[i] = progress[i]
+						}else{
+							output[i] = input[i]
+						}
+					}
+					settings.setItem("latency", output)
+					pos = 2
+				}
+				break
+		}
 		switch(pos){
 			case 1:
-				assets.sounds["se_don"].play()
+				this.controller.playSound("se_don", 0, true)
+				if(state === "video"){
+					game.calibrationReset(state)
+				}else{
 					this.controller.restartSong()
+				}
 				pageEvents.send("pause-restart")
 				break
 			case 2:
-				assets.sounds["se_don"].play()
+				this.controller.playSound("se_don", 0, true)
 				this.controller.songSelection()
 				pageEvents.send("pause-song-select")
 				break
 			default:
-				this.controller.togglePause()
+				this.controller.togglePause(false)
 				break
 		}
+		return true
 	}
 	onmousedown(event){
 		if(this.controller.game.paused){
@@ -1855,23 +2144,30 @@
 			x = x * pauseScale + 257
 			y = y * pauseScale - 328
 		}
+		switch(this.controller.game.calibrationState){
+			case "audioHelp":
+			case "videoHelp":
+			case "results":
+				if(554 - 90 * this.pauseOptions.length <= y && y <= 554 && 404 <= x && x <= 876){
+					return Math.floor((y - 554 + 90 * this.pauseOptions.length) / 90)
+				}
+				break
+			default:
 				if(104 <= y && y <= 575 && 465 <= x && x <= 465 + 110 * this.pauseOptions.length){
 					return Math.floor((x - 465) / 110)
 				}
+				break
+		}
 		return null
 	}
 	mouseIdle(){
 		var lastMouse = pageEvents.getMouse()
-		if(lastMouse && !this.cursorHidden){
+		if(lastMouse && !this.cursorHidden && !this.state.hasPointer){
 			if(this.getMS() >= this.lastMousemove + 2000){
-				this.cursor.style.top = lastMouse.clientY + "px"
-				this.cursor.style.left = lastMouse.clientX + "px"
-				this.cursor.style.pointerEvents = "auto"
+				this.canvas.style.cursor = "none"
 				this.cursorHidden = true
 			}else{
-				this.cursor.style.top = ""
-				this.cursor.style.left = ""
-				this.cursor.style.pointerEvents = ""
+				this.canvas.style.cursor = ""
 			}
 		}
 	}
@@ -1890,12 +2186,13 @@
 		this.pauseCache.clean()
 		this.branchCache.clean()
 		
+		versionDiv.classList.remove("version-hide")
+		loader.screen.parentNode.appendChild(versionDiv)
 		if(this.multiplayer !== 2){
 			if(this.touchEnabled){
 				pageEvents.remove(this.canvas, "touchstart")
 				pageEvents.remove(this.touchPauseBtn, "touchend")
 				this.gameDiv.classList.add("touch-results")
-				document.getElementById("version").classList.remove("version-hide")
 				this.touchDrumDiv.parentNode.removeChild(this.touchDrumDiv)
 				delete this.touchDrumDiv
 				delete this.touchDrumImg
@@ -1915,7 +2212,6 @@
 		pageEvents.mouseRemove(this)
 
 		delete this.pauseMenu
-		delete this.cursor
 		delete this.gameDiv
 		delete this.canvas
 		delete this.ctx

public/src/views/about.html

@@ -7,8 +7,8 @@
 			<div id="link-issues" class="taibtn stroke-sub link-btn" alt="Issues">
 				<a target="_blank">Issues</a>
 			</div>
-			<div id="link-email" class="taibtn stroke-sub link-btn" alt="taiko@bui.pm">
-				<a href="mailto:taiko@bui.pm">taiko@bui.pm</a>
+			<div id="link-email" class="taibtn stroke-sub link-btn">
+				<a></a>
 			</div>
 		</div>
 		<div class="view-end-button taibtn stroke-sub selected"></div>

public/src/views/game.html

@@ -11,5 +11,4 @@
 	<div id="touch-buttons">
 		<div id="touch-full-btn"></div><div id="touch-pause-btn"></div>
 	</div>
-	<div id="cursor"></div>
 </div>

public/src/views/settings.html

@@ -20,5 +20,15 @@
 				<div class="view-end-button taibtn stroke-sub selected"></div>
 			</div>
 		</div>
+		<div class="view-outer shadow-outer" id="settings-latency">
+			<div class="view">
+				<div class="view-title stroke-sub"></div>
+				<div class="view-content"></div>
+				<div class="left-buttons">
+					<div id="latency-default" class="taibtn stroke-sub"></div>
+				</div>
+				<div class="view-end-button taibtn stroke-sub"></div>
+			</div>
+		</div>
 	</div>
 </div>