Fix: ES6 -> ES5 (imcompleted)

src/game/menu/welcome_player_text.js

@@ -1,30 +1,34 @@
-class WelcomePlayerText extends Phaser.Text {
+WelcomePlayerText.prototype = Object.create(Phaser.Text.prototype);
+WelcomePlayerText.constructor = WelcomePlayerText;
 
-	constructor(playerName) {
-		super(game, game.world.width / 2, game.world.height / 2 - 40, "어서오세요, " + playerName + "님", WelcomePlayerText.DEFAULT_TEXT_FONT);
+function WelcomePlayerText(playerName) {
+	Phaser.Text.call(
+		this, game,
+		game.world.width / 2, game.world.height / 2 - 40,
+		"어서오세요, " + playerName + "님",
+		WelcomePlayerText.DEFAULT_TEXT_FONT
+	);
 
-		this.anchor.set(0.5);
-		this.inputEnabled = false;
+	this.anchor.set(0.5);
+	this.inputEnabled = false;
 
-		var grd = this.context.createLinearGradient(0, 0, 0, this.height);
-		grd.addColorStop(0, '#8ED6FF');
-		grd.addColorStop(1, '#4C6CB3');
-		this.fill = grd;
-		this.setShadow(3, 3, 'rgba(0, 0, 0, 0.5)', 2);
-		this.stroke = '#000';
-		this.strokeThickness = 5;
+	var grd = this.context.createLinearGradient(0, 0, 0, this.height);
+	grd.addColorStop(0, '#8ED6FF');
+	grd.addColorStop(1, '#4C6CB3');
+	this.fill = grd;
+	this.setShadow(3, 3, 'rgba(0, 0, 0, 0.5)', 2);
+	this.stroke = '#000';
+	this.strokeThickness = 5;
 
-		this.alpha = 1;
-		let tweenAlpha = game.add.tween(this);
-		tweenAlpha.to( { alpha: 0 }, 2000, Phaser.Easing.Back.In, true);
+	this.alpha = 1;
+	let tweenAlpha = game.add.tween(this);
+	tweenAlpha.to( { alpha: 0 }, 2000, Phaser.Easing.Back.In, true);
 
-		game.add.existing(this);
-	};
-
-	destroySelf() {
-		this.destroy();
-	}
+	game.add.existing(this);
+}
 
+WelcomePlayerText.prototype.destroySelf = function() {
+	this.destroy();
 }
 
 WelcomePlayerText.DEFAULT_TEXT_FONT = {
@@ -32,4 +36,4 @@ WelcomePlayerText.DEFAULT_TEXT_FONT = {
 	boundsAlignH: "center",		// left, center. right
 	boundsAlignV: "middle", 	// top, middle, bottom
 	fill: "#fff"
-};
+}