Fix: typing ES5 bug

src/game/typing/lib/typing_text_manager.js

@@ -1,40 +1,36 @@
-class TypingTextManager {
+function TypingTextManager() {
+	this.init();
+}
 
-	constructor() {
-		this.init();
-	}
+TypingTextManager.prototype.init = function() {
+	this.contents = [];
+}
 
-	init() {
-		this.contents = [];
-	}
+TypingTextManager.prototype.getContents = function() {
+	return this.contents;
+}
 
-	getContents() {
-		return this.contents;
-	}
+TypingTextManager.prototype.add = function(arr) {
+	this.contents = this.contents.concat(arr);
+}
 
-	add(arr) {
-		this.contents = this.contents.concat(arr);
-	}
+TypingTextManager.prototype.slice = function(start, end) {
+	this.contents = this.contents.slice(start, end);
+}
 
-	slice(start, end) {
-		this.contents = this.contents.slice(start, end);
-	}
+TypingTextManager.prototype.getShuffledArray = function(arr) {
+	return Phaser.ArrayUtils.shuffle(arr);
+}
 
-	getShuffledArray(arr) {
-		return Phaser.ArrayUtils.shuffle(arr);
-	}
-
-
-	makePracticeContents(arr, repeatCount) {
-		this.init();
-		this.add(arr);
-		for(let i = 0; i < repeatCount; i++) {
-			this.add(this.getShuffledArray(arr));
-		}
-	}
-
-	makeTestContents(arr) {
-		this.init();
+TypingTextManager.prototype.makePracticeContents = function(arr, repeatCount) {
+	this.init();
+	this.add(arr);
+	for(var i = 0; i < repeatCount; i++) {
 		this.add(this.getShuffledArray(arr));
 	}
-};
+}
+
+TypingTextManager.prototype.makeTestContents = function(arr) {
+	this.init();
+	this.add(this.getShuffledArray(arr));
+}