Add lyrics

public/src/css/debug.css

@@ -123,6 +123,7 @@
 }
 
 #debug .autoplay-label,
-#debug .branch-hide{
+#debug .branch-hide,
+#debug .lyrics-hide{
 	display: none;
 }

public/src/css/game.css

@@ -89,3 +89,38 @@
 .fix-animations *{
 	animation: none !important;
 }
+#song-lyrics{
+	position: absolute;
+	right: calc((100vw - 1280 / 720 * 100vh) / 2 + 100px * var(--scale));
+	bottom: calc(44 / 720 * 100vh - 30px * var(--scale));
+	left: calc((100vw - 1280 / 720 * 100vh) / 2 + 100px * var(--scale));
+	text-align: center;
+	font-family: Meiryo, sans-serif;
+	font-weight: bold;
+	font-size: calc(45px * var(--scale));
+	line-height: 1.2;
+}
+#game.portrait{
+	right: calc(20px * var(--scale));
+	left: calc(20px * var(--scale));
+}
+#song-lyrics .stroke,
+#song-lyrics .fill{
+	position: absolute;
+	right: 0;
+	bottom: 0;
+	left: 0;
+}
+#song-lyrics .stroke{
+	-webkit-text-stroke: calc(7px * var(--scale)) #00a;
+}
+#song-lyrics .fill{
+	color: #fff;
+}
+#song-lyrics ruby{
+	display: inline-flex;
+	flex-direction: column-reverse;
+}
+#song-lyrics rt{
+	line-height: 1;
+}

public/src/js/assets.js

@@ -32,7 +32,8 @@ var assets = {
 		"logo.js",
 		"settings.js",
 		"scorestorage.js",
-		"account.js"
+		"account.js",
+		"lyrics.js"
 	],
 	"css": [
 		"main.css",

public/src/js/controller.js

@@ -57,6 +57,10 @@ class Controller{
 				if(song.id == this.selectedSong.folder){
 					this.mainAsset = song.sound
 					this.volume = song.volume || 1
+					if(song.lyricsData && !multiplayer && (!this.touchEnabled || this.autoPlayEnabled)){
+						var lyricsDiv = document.getElementById("song-lyrics")
+						this.lyrics = new Lyrics(song.lyricsData, selectedSong.offset, lyricsDiv)
+					}
 				}
 			})
 		}
@@ -316,5 +320,8 @@ class Controller{
 				debugObj.debug.updateStatus()
 			}
 		}
+		if(this.lyrics){
+			this.lyrics.clean()
+		}
 	}
 }

public/src/js/debug.js

@@ -17,6 +17,8 @@ class Debug{
 		this.branchSelect = this.branchSelectDiv.getElementsByTagName("select")[0]
 		this.branchResetBtn = this.branchSelectDiv.getElementsByClassName("reset")[0]
 		this.volumeDiv = this.byClass("music-volume")
+		this.lyricsHideDiv = this.byClass("lyrics-hide")
+		this.lyricsOffsetDiv = this.byClass("lyrics-offset")
 		this.restartLabel = this.byClass("change-restart-label")
 		this.restartCheckbox = this.byClass("change-restart")
 		this.autoplayLabel = this.byClass("autoplay-label")
@@ -50,6 +52,9 @@ class Debug{
 		this.volumeSlider.onchange(this.volumeChange.bind(this))
 		this.volumeSlider.set(1)
 		
+		this.lyricsSlider = new InputSlider(this.lyricsOffsetDiv, -60, 60, 3)
+		this.lyricsSlider.onchange(this.lyricsChange.bind(this))
+		
 		this.moveTo(100, 100)
 		this.restore()
 		this.updateStatus()
@@ -129,6 +134,9 @@ class Debug{
 			if(this.controller.parsedSongData.branches){
 				this.branchHideDiv.style.display = "block"
 			}
+			if(this.controller.lyrics){
+				this.lyricsHideDiv.style.display = "block"
+			}
 			
 			var selectedSong = this.controller.selectedSong
 			this.defaultOffset = selectedSong.offset || 0
@@ -136,11 +144,13 @@ class Debug{
 				this.offsetChange(this.offsetSlider.get(), true)
 				this.branchChange(null, true)
 				this.volumeChange(this.volumeSlider.get(), true)
+				this.lyricsChange(this.lyricsSlider.get())
 			}else{
 				this.songHash = selectedSong.hash
 				this.offsetSlider.set(this.defaultOffset)
 				this.branchReset(null, true)
 				this.volumeSlider.set(this.controller.volume)
+				this.lyricsSlider.set(this.controller.lyrics ? this.controller.lyrics.vttOffset / 1000 : 0)
 			}
 			
 			var measures = this.controller.parsedSongData.measures.filter((measure, i, array) => {
@@ -174,6 +184,7 @@ class Debug{
 			this.restartBtn.style.display = ""
 			this.autoplayLabel.style.display = ""
 			this.branchHideDiv.style.display = ""
+			this.lyricsHideDiv.style.display = ""
 			this.controller = null
 		}
 		this.stopMove()
@@ -194,6 +205,9 @@ class Debug{
 					branch.ms = branch.originalMS + offset
 				})
 			}
+			if(this.controller.lyrics){
+				this.controller.lyrics.offsetChange(value * 1000)
+			}
 			if(this.restartCheckbox.checked && !noRestart){
 				this.restartSong()
 			}
@@ -213,6 +227,14 @@ class Debug{
 			this.restartSong()
 		}
 	}
+	lyricsChange(value, noRestart){
+		if(this.controller && this.controller.lyrics){
+			this.controller.lyrics.offsetChange(undefined, value * 1000)
+		}
+		if(this.restartCheckbox.checked && !noRestart){
+			this.restartSong()
+		}
+	}
 	restartSong(){
 		if(this.controller){
 			this.controller.restartSong()
@@ -259,6 +281,7 @@ class Debug{
 		this.offsetSlider.clean()
 		this.measureNumSlider.clean()
 		this.volumeSlider.clean()
+		this.lyricsSlider.clean()
 		
 		pageEvents.remove(window, ["mousedown", "mouseup", "touchstart", "touchend", "blur", "resize"], this.windowSymbol)
 		pageEvents.mouseRemove(this)
@@ -285,6 +308,8 @@ class Debug{
 		delete this.branchSelect
 		delete this.branchResetBtn
 		delete this.volumeDiv
+		delete this.lyricsHideDiv
+		delete this.lyricsOffsetDiv
 		delete this.restartCheckbox
 		delete this.autoplayLabel
 		delete this.autoplayCheckbox

public/src/js/loadsong.js

@@ -142,6 +142,12 @@ class LoadSong{
 			this.addPromise(loader.ajax(url).then(data => {
 				this.songData = data.replace(/\0/g, "").split("\n")
 			}), url)
+			if(song.lyrics && !songObj.lyricsData){
+				var url = this.getSongDir(song) + "main.vtt"
+				this.addPromise(loader.ajax(url).then(data => {
+					songObj.lyricsData = data
+				}), url)
+			}
 		}
 		if(this.touchEnabled && !assets.image["touch_drum"]){
 			let img = document.createElement("img")
@@ -262,8 +268,11 @@ class LoadSong{
 	randInt(min, max){
 		return Math.floor(Math.random() * (max - min + 1)) + min
 	}
+	getSongDir(selectedSong){
+		return gameConfig.songs_baseurl + selectedSong.folder + "/"
+	}
 	getSongPath(selectedSong){
-		var directory = gameConfig.songs_baseurl + selectedSong.folder + "/"
+		var directory = this.getSongDir(selectedSong)
 		if(selectedSong.type === "tja"){
 			return directory + "main.tja"
 		}else{

public/src/js/lyrics.js

@@ -0,0 +1,231 @@
+class Lyrics{
+	constructor(file, songOffset, div){
+		this.div = div
+		this.stroke = document.createElement("div")
+		this.stroke.classList.add("stroke")
+		div.appendChild(this.stroke)
+		this.fill = document.createElement("div")
+		this.fill.classList.add("fill")
+		div.appendChild(this.fill)
+		this.current = 0
+		this.shown = -1
+		this.songOffset = songOffset || 0
+		this.vttOffset = 0
+		this.rLinebreak = /\n|\r\n/
+		this.lines = this.parseFile(file)
+		this.length = this.lines.length
+	}
+	parseFile(file){
+		var lines = []
+		var commands = file.split(/\n\n|\r\n\r\n/)
+		var arrow = " --> "
+		for(var i in commands){
+			var matches = commands[i].match(this.rLinebreak)
+			if(matches){
+				var cmd = commands[i].slice(0, matches.index)
+				var value = commands[i].slice(matches.index + 1)
+			}else{
+				var cmd = commands[i]
+				var value = ""
+			}
+			if(cmd.startsWith("WEBVTT")){
+				var nameValue = cmd.slice(7).split(";")
+				for(var j in nameValue){
+					var [name, value] = nameValue[j].split(":")
+					if(name.trim().toLowerCase() === "offset"){
+						this.vttOffset = (parseFloat(value.trim()) || 0) * 1000
+					}
+				}
+			}else{
+				var time = null
+				var index = cmd.indexOf(arrow)
+				if(index !== -1){
+					time = cmd
+				}else{
+					var matches = value.match(rLinebreak)
+					if(matches){
+						var value1 = value.slice(0, matches.index)
+						index = value1.indexOf(arrow)
+						if(index !== -1){
+							time = value1
+							value = value.slice(index)
+						}
+					}
+				}
+				if(time !== null){
+					var start = time.slice(0, index)
+					var end = time.slice(index + arrow.length)
+					var index = end.indexOf(" ")
+					if(index !== -1){
+						end = end.slice(0, index)
+					}
+					var text = value.trim()
+					var textLang = ""
+					var firstLang = -1
+					var index2 = -1
+					while(true){
+						var index1 = text.indexOf("<lang ", index2 + 1)
+						if(firstLang === -1){
+							firstLang = index1
+						}
+						if(index1 !== -1){
+							index2 = text.indexOf(">", index1 + 6)
+							if(index2 === -1){
+								break
+							}
+							var lang = text.slice(index1 + 6, index2).toLowerCase()
+							if(strings.id === lang){
+								var index3 = text.indexOf("<lang ", index2 + 1)
+								if(index3 !== -1){
+									textLang = text.slice(index2 + 1, index3)
+								}else{
+									textLang = text.slice(index2 + 1)
+								}
+							}
+						}else{
+							break
+						}
+					}
+					if(!textLang){
+						textLang = firstLang === -1 ? text : text.slice(0, firstLang)
+					}
+					lines.push({
+						start: this.convertTime(start),
+						end: this.convertTime(end),
+						text: textLang
+					})
+				}
+			}
+		}
+		return lines
+	}
+	convertTime(time){
+		if(time.startsWith("-")){
+			var mul = -1
+			time = time.slice(1)
+		}else{
+			var mul = 1
+		}
+		var array = time.split(":")
+		if(array.length === 2){
+			var h = 0
+			var m = array[0]
+			var s = array[1]
+		}else{
+			var h = parseInt(array[0])
+			var m = array[1]
+			var s = array[2]
+		}
+		var index = s.indexOf(",")
+		if(index !== -1){
+			s = s.slice(0, index) + "." + s.slice(index + 1)
+		}
+		return ((h * 60 + parseInt(m)) * 60 + parseFloat(s)) * 1000 * mul
+	}
+	update(ms){
+		if(this.current >= this.length){
+			return
+		}
+		ms += this.songOffset + this.vttOffset
+		var currentLine = this.lines[this.current]
+		while(currentLine && ms > currentLine.end){
+			currentLine = this.lines[++this.current]
+		}
+		if(this.shown !== this.current){
+			if(currentLine && ms >= currentLine.start){
+				this.setText(this.lines[this.current].text)
+				this.shown = this.current
+			}else if(this.shown !== -1){
+				this.setText("")
+				this.shown = -1
+			}
+		}
+	}
+	setText(text){
+		this.stroke.innerHTML = this.fill.innerHTML = ""
+		var hasRuby = false
+		while(text){
+			var matches = text.match(this.rLinebreak)
+			var index1 = matches ? matches.index : -1
+			var index2 = text.indexOf("<ruby>")
+			if(index1 !== -1 && (index2 === -1 || index2 > index1)){
+				this.textNode(text.slice(0, index1))
+				this.linebreakNode()
+				text = text.slice(index1 + matches[0].length)
+			}else if(index2 !== -1){
+				hasRuby = true
+				this.textNode(text.slice(0, index2))
+				text = text.slice(index2 + 6)
+				var index = text.indexOf("</ruby>")
+				if(index !== -1){
+					var ruby = text.slice(0, index)
+					text = text.slice(index + 7)
+				}else{
+					var ruby = text
+					text = ""
+				}
+				var index = ruby.indexOf("<rt>")
+				if(index !== -1){
+					var node1 = ruby.slice(0, index)
+					ruby = ruby.slice(index + 4)
+					var index = ruby.indexOf("</rt>")
+					if(index !== -1){
+						var node2 = ruby.slice(0, index)
+					}else{
+						var node2 = ruby
+					}
+				}else{
+					var node1 = ruby
+					var node2 = ""
+				}
+				this.rubyNode(node1, node2)
+			}else{
+				this.textNode(text)
+				break
+			}
+		}
+	}
+	insertNode(func){
+		this.stroke.appendChild(func())
+		this.fill.appendChild(func())
+	}
+	textNode(text){
+		this.insertNode(() => document.createTextNode(text))
+	}
+	linebreakNode(){
+		this.insertNode(() => document.createElement("br"))
+	}
+	rubyNode(node1, node2){
+		this.insertNode(() => {
+			var ruby = document.createElement("ruby")
+			var rt = document.createElement("rt")
+			ruby.appendChild(document.createTextNode(node1))
+			rt.appendChild(document.createTextNode(node2))
+			ruby.appendChild(rt)
+			return ruby
+		})
+	}
+	setScale(ratio){
+		this.div.style.setProperty("--scale", ratio)
+	}
+	offsetChange(songOffset, vttOffset){
+		if(typeof songOffset !== "undefined"){
+			this.songOffset = songOffset
+		}
+		if(typeof vttOffset !== "undefined"){
+			this.vttOffset = vttOffset
+		}
+		this.setText("")
+		this.current = 0
+		this.shown = -1
+	}
+	clean(){
+		if(this.shown !== -1){
+			this.setText("")
+		}
+		delete this.div
+		delete this.stroke
+		delete this.fill
+		delete this.lines
+	}
+}

public/src/js/songselect.js

@@ -127,7 +127,8 @@ class SongSelect{
 				maker: song.maker,
 				canJump: true,
 				hash: song.hash || song.title,
-				order: song.order
+				order: song.order,
+				lyrics: song.lyrics
 			})
 		}
 		this.songs.sort((a, b) => {
@@ -802,7 +803,8 @@ class SongSelect{
 			"offset": selectedSong.offset,
 			"songSkin": selectedSong.songSkin,
 			"stars": selectedSong.courses[diff].stars,
-			"hash": selectedSong.hash
+			"hash": selectedSong.hash,
+			"lyrics": selectedSong.lyrics
 		}, autoplay, multiplayer, touch)
 	}
 	toOptions(moveBy){

public/src/js/view.js

@@ -247,6 +247,9 @@
 			}
 			this.fillComboCache()
 			this.setDonBgHeight()
+			if(this.controller.lyrics){
+				this.controller.lyrics.setScale(ratio / this.pixelRatio)
+			}
 			resized = true
 		}else if(this.controller.game.paused && !document.hasFocus()){
 			return
@@ -283,6 +286,10 @@
 			this.setDonBgHeight()
 		}
 		
+		if(this.controller.lyrics){
+			this.controller.lyrics.update(ms)
+		}
+		
 		ctx.save()
 		ctx.translate(0, frameTop)
 		

public/src/views/debug.html

@@ -24,6 +24,12 @@
 	<div class="music-volume input-slider">
 		<span class="reset">x</span><input type="text" value="" readonly><span class="minus">-</span><span class="plus">+</span>
 	</div>
+	<div class="lyrics-hide">
+		<div>Lyrics offset:</div>
+		<div class="lyrics-offset input-slider">
+			<span class="reset">x</span><input type="text" value="" readonly><span class="minus">-</span><span class="plus">+</span>
+		</div>
+	</div>
 	<label class="change-restart-label"><input class="change-restart" type="checkbox">Restart on change</label>
 	<label class="autoplay-label"><input class="autoplay" type="checkbox">Auto play</label>
 	<div class="bottom-btns">

public/src/views/game.html

@@ -8,6 +8,7 @@
 		<div id="touch-drum-img"></div>
 	</div>
 	<canvas id="canvas"></canvas>
+	<div id="song-lyrics"></div>
 	<div id="touch-buttons">
 		<div id="touch-full-btn"></div><div id="touch-pause-btn"></div>
 	</div>