/**** 
* Classes
****/ 
// Class for Answer Button
var AnswerButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2('', {
		size: 80,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.setText = function (text) {
		buttonText.setText(text);
	};
	self.setPosition = function (x, y) {
		self.x = x;
		self.y = y;
	};
	self.onClick = function (callback) {
		self.down = function (x, y, obj) {
			callback();
		};
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Class for Quiz Question
var QuizQuestion = Container.expand(function () {
	var self = Container.call(this);
	var questionText = new Text2('', {
		size: 100,
		fill: 0xFFFFFF
	});
	questionText.anchor.set(0.5, 0.5);
	self.addChild(questionText);
	self.setQuestion = function (text) {
		questionText.setText(text);
	};
	self.setPosition = function (x, y) {
		self.x = x;
		self.y = y;
	};
});

/**** 
* Initialize Game
****/ 
// Class for Quiz API
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Class for Quiz API
var QuizAPI = function QuizAPI() {
	this.questions = [];
	this.currentQuestionIndex = 0;
	this.score = 0;
	this.getQuestions = function () {
		// This is where you would normally fetch the questions from an API
		// For the purpose of this example, we will use a static list of questions
		this.questions = [{
			question: "The Pyramids of Giza were constructed using advanced alien technology.",
			answer: "Mystery"
		}, {
			question: "The Antikythera Mechanism is considered the world’s first analog computer, used to predict celestial events.",
			answer: "Science"
		}, {
			question: "Stonehenge was built by giants who roamed the earth in prehistoric times.",
			answer: "Mystery"
		}, {
			question: "Lidar technology has been used to discover ancient Maya cities hidden beneath dense jungle canopies.",
			answer: "Science"
		}, {
			question: "The Nazca Lines in Peru were created as landing strips for extraterrestrial spacecraft.",
			answer: "Mystery"
		}, {
			question: "DNA analysis has confirmed that the people of Ötzi the Iceman’s community were early European farmers.",
			answer: "Science"
		}, {
			question: "The Voynich Manuscript contains a secret code from an ancient, unknown civilization.",
			answer: "Mystery"
		}, {
			question: "Ground-penetrating radar helped uncover Viking ship burials in Norway without disturbing the earth.",
			answer: "Science"
		}, {
			question: "The Baghdad Battery was used to generate electricity thousands of years ago.",
			answer: "Mystery"
		}, {
			question: "Carbon dating revealed that the Dead Sea Scrolls were written over 2,000 years ago.",
			answer: "Science"
		}, {
			question: "Atlantis was a real, advanced civilization that sank beneath the ocean.",
			answer: "Mystery"
		}, {
			question: "Laser scanning technology reconstructed the city layout of Angkor Wat.",
			answer: "Science"
		}, {
			question: "The Ark of the Covenant is buried in Ethiopia, as claimed by local legend.",
			answer: "Mystery"
		}, {
			question: "Isotope analysis from human remains shows migration patterns during the Bronze Age.",
			answer: "Science"
		}, {
			question: "The Easter Island statues walked to their positions using ancient methods of transportation.",
			answer: "Mystery"
		}];
	};
	this.getCurrentQuestion = function () {
		if (this.currentQuestionIndex < this.questions.length) {
			return this.questions[this.currentQuestionIndex];
		} else {
			return {
				question: "No more questions available.",
				answer: ""
			};
		}
	};
	this.checkAnswer = function (answer) {
		if (this.getCurrentQuestion().answer === answer) {
			this.score++;
		}
		this.currentQuestionIndex++;
	};
	this.getScore = function () {
		return this.score;
	};
	this.hasMoreQuestions = function () {
		return this.currentQuestionIndex < this.questions.length;
	};
};
var quizAPI = new QuizAPI();
quizAPI.getQuestions();
var questionDisplay = new QuizQuestion();
questionDisplay.setPosition(1024, 500);
game.addChild(questionDisplay);
var mysteryButton = new AnswerButton();
mysteryButton.setText("Mystery");
mysteryButton.setPosition(724, 1500);
game.addChild(mysteryButton);
var scienceButton = new AnswerButton();
scienceButton.setText("Science");
scienceButton.setPosition(1324, 1500);
game.addChild(scienceButton);
var scoreDisplay = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreDisplay.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreDisplay);
var finalScoreText = new Text2('', {
	size: 80,
	fill: 0xFFFFFF
});
finalScoreText.anchor.set(0.5, 0);
LK.gui.bottom.addChild(finalScoreText);
scoreDisplay.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreDisplay);
function updateQuestion() {
	if (quizAPI.hasMoreQuestions()) {
		questionDisplay.setQuestion(quizAPI.getCurrentQuestion().question);
	} else {
		finalScoreText.setText('Final Score: ' + quizAPI.getScore());
	}
}
function checkAnswer(answer) {
	quizAPI.checkAnswer(answer);
	scoreDisplay.setText('Score: ' + quizAPI.getScore());
	updateQuestion();
}
mysteryButton.onClick(function () {
	checkAnswer("Mystery");
});
scienceButton.onClick(function () {
	checkAnswer("Science");
});
updateQuestion();

===================================================================
--- original.js
+++ change.js
@@ -113,9 +113,16 @@
 			answer: "Mystery"
 		}];
 	};
 	this.getCurrentQuestion = function () {
-		return this.questions[this.currentQuestionIndex];
+		if (this.currentQuestionIndex < this.questions.length) {
+			return this.questions[this.currentQuestionIndex];
+		} else {
+			return {
+				question: "No more questions available.",
+				answer: ""
+			};
+		}
 	};
 	this.checkAnswer = function (answer) {
 		if (this.getCurrentQuestion().answer === answer) {
 			this.score++;