Fix: () => { } -> function() { }

src/game/mouse/space_invaders/game.js

@@ -4,24 +4,26 @@
 class Game {
 
 	create() {
+		let self = this;
+
 		this.game.stage.backgroundColor = "#000000";	// '#4d4d4d';
 
 		sessionStorageManager.isNewBestRecrd = false;
 
 		// top ui
 		let screenTopUI = new ScreenTopUI();
-		screenTopUI.makeBackButton( () => {
+		screenTopUI.makeBackButton( function() {
 			sessionStorageManager.resetPlayingAppData();
 			location.href = '../../web/client/menu_app.html';
 		});
 		screenTopUI.makeFullScreenButton();
 
 		let scoreBoard = new ScoreBoard();
-		scoreManager.addOnChangeScoreListener( score => {
+		scoreManager.addOnChangeScoreListener( function(score) {
 			sessionStorageManager.record = score;
 			scoreBoard.printScore(NumberUtil.numberWithCommas(score));
 		});
-		scoreManager.addOnChangeHighScoreListener( highScore => {
+		scoreManager.addOnChangeHighScoreListener( function(highScore) {
 			console.log(highScore);
 			sessionStorageManager.bestRecord = highScore;
 			sessionStorageManager.isNewBestRecrd = true;
@@ -30,7 +32,7 @@ class Game {
 
 		let heartGauge = new HeartGauge(heartManager);
 		heartManager.addOnChangeGameOverListener(
-			() => { this.gameOver(); }
+			function() { self.gameOver(); }
 		);
 		heartGauge.start();
 
@@ -55,11 +57,11 @@ class Game {
 		this.aliens = [];
 		for(let i = 0; i < 10; i++) {
 			let alien = new Alien(150 + 80 * i, 150,
-				() => { this.activateNextAlien(); },	// onGoOnstage
-				(sprite) => {
-					scoreManager.plusScore(this.getScore());
-					let scoreText = new ScoreText(sprite.x, sprite.y, this.getScore());
-				},		// this.onAlienFired,
+				(function() { self.activateNextAlien(); }),	// onGoOnstage
+				(function(sprite) {
+					scoreManager.plusScore(self.getScore());
+					let scoreText = new ScoreText(sprite.x, sprite.y, self.getScore());
+				}),		// this.onAlienFired,
 				this.onAlienEscaped
 			);
 			alien.goWaitingRoom();