Add global offset

Adds new settings for controlling the note offset while playing. It can be either an actual offset (it is called "Audio Latency" in the settings) or just the visual offset ("Video Latency").
With higher audio latency it means you have to press the button sooner than what you hear, similarly with higher video latency it is sooner than what you see. By offsetting these events the game would play better, however, the sound effect of you hitting the drum would still play at the wrong time, the code cannot anticipate you to hit the drum in the future so to work around this issue a new option that disables drum sounds is also included.
These settings could be set through trial and error but it would be better to get the correct values through the automated latency calibration, where you can hit the drum as you hear sounds or see a blinking animation. I tried making one by measuring latency from user input, adding all the latency up, and dividing, but that gives unreliable results. I hope someone suggests to me what I should be doing during the calibration to get better results, as I cannot figure what to do on my own.

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