/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var AnswerButton = Container.expand(function (answer, isCorrect) {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('answerButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.answer = answer;
	self.isCorrect = isCorrect;
	var answerText = new Text2(answer.toString(), {
		size: 60,
		fill: 0xFFFFFF,
		stroke: 0x000000,
		strokeThickness: 4
	});
	answerText.anchor.set(0.5, 0.5);
	self.addChild(answerText);
	self.down = function (x, y, obj) {
		if (currentQuestion && !questionAnswered) {
			handleAnswer(self.isCorrect);
		}
	};
	return self;
});
var Cat = Container.expand(function () {
	var self = Container.call(this);
	var catGraphics = self.attachAsset('cat', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.saved = false;
	self.fallen = false;
	self.update = function () {
		if (!self.saved && !self.fallen) {
			self.y += self.speed;
			if (self.y > 2400) {
				self.fallen = true;
			}
		}
	};
	return self;
});
var Fire = Container.expand(function () {
	var self = Container.call(this);
	var fireGraphics = self.attachAsset('fire', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.animationTimer = 0;
	self.update = function () {
		self.animationTimer += 1;
		fireGraphics.scaleX = 1 + Math.sin(self.animationTimer * 0.1) * 0.3;
		fireGraphics.scaleY = 1 + Math.cos(self.animationTimer * 0.15) * 0.2;
	};
	return self;
});
var Smoke = Container.expand(function () {
	var self = Container.call(this);
	var smokeGraphics = self.attachAsset('smoke', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -1;
	self.drift = Math.random() * 2 - 1;
	self.update = function () {
		self.y += self.speed;
		self.x += self.drift;
		smokeGraphics.alpha -= 0.01;
		if (smokeGraphics.alpha <= 0 || self.y < -100) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0d191e
});

/**** 
* Game Code
****/ 
// Game variables
var lives = 3;
var catsRescued = 0;
var currentCat = null;
var currentQuestion = null;
var questionAnswered = false;
var gameRunning = true;
var difficulty = 1;
var questionTimer = 0;
var maxQuestionTime = 300; // 5 seconds at 60fps
// UI elements
var livesText = new Text2('Lives: 3', {
	size: 80,
	fill: 0xFF0000
});
livesText.anchor.set(0, 0);
livesText.x = 120;
livesText.y = 20;
LK.gui.topLeft.addChild(livesText);
var scoreText = new Text2('Cats Rescued: 0', {
	size: 80,
	fill: 0x00FF00
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var questionText = new Text2('', {
	size: 100,
	fill: 0xFFFFFF,
	stroke: 0x000000,
	strokeThickness: 8
});
questionText.anchor.set(0.5, 0.5);
questionText.x = 1024;
questionText.y = 400;
game.addChild(questionText);
// Game objects
var building = game.addChild(LK.getAsset('building', {
	anchorX: 0.5,
	anchorY: 1,
	x: 1024,
	y: 2400
}));
var firefighter = game.addChild(LK.getAsset('firefighter', {
	anchorX: 0.5,
	anchorY: 1,
	x: 1024,
	y: 2600
}));
var net = game.addChild(LK.getAsset('net', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 2500
}));
// Arrays for game objects
var fires = [];
var smokes = [];
var answerButtons = [];
// Create fires on building
for (var i = 0; i < 8; i++) {
	var fire = new Fire();
	fire.x = 300 + i * 200;
	fire.y = 1400 + Math.random() * 400;
	fires.push(fire);
	game.addChild(fire);
}
// Math question generation
function generateQuestion() {
	var num1, num2, operation, answer, wrongAnswers;
	if (difficulty <= 2) {
		// Addition and subtraction
		num1 = Math.floor(Math.random() * 20) + 1;
		num2 = Math.floor(Math.random() * 20) + 1;
		operation = Math.random() > 0.5 ? '+' : '-';
		if (operation === '+') {
			answer = num1 + num2;
		} else {
			if (num1 < num2) {
				var temp = num1;
				num1 = num2;
				num2 = temp;
			}
			answer = num1 - num2;
		}
	} else {
		// Multiplication and division
		if (Math.random() > 0.5) {
			num1 = Math.floor(Math.random() * 12) + 1;
			num2 = Math.floor(Math.random() * 12) + 1;
			operation = '×';
			answer = num1 * num2;
		} else {
			num2 = Math.floor(Math.random() * 12) + 1;
			answer = Math.floor(Math.random() * 12) + 1;
			num1 = num2 * answer;
			operation = '÷';
		}
	}
	var questionStr = num1 + ' ' + operation + ' ' + num2 + ' = ?';
	// Generate wrong answers
	wrongAnswers = [];
	while (wrongAnswers.length < 3) {
		var wrongAnswer = answer + Math.floor(Math.random() * 20) - 10;
		if (wrongAnswer !== answer && wrongAnswer > 0 && wrongAnswers.indexOf(wrongAnswer) === -1) {
			wrongAnswers.push(wrongAnswer);
		}
	}
	return {
		question: questionStr,
		answer: answer,
		wrongAnswers: wrongAnswers
	};
}
function createAnswerButtons(questionData) {
	// Clear existing buttons
	for (var i = answerButtons.length - 1; i >= 0; i--) {
		answerButtons[i].destroy();
		answerButtons.splice(i, 1);
	}
	var allAnswers = [questionData.answer].concat(questionData.wrongAnswers);
	// Shuffle answers
	for (var i = allAnswers.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = allAnswers[i];
		allAnswers[i] = allAnswers[j];
		allAnswers[j] = temp;
	}
	// Create buttons
	for (var i = 0; i < 4; i++) {
		var isCorrect = allAnswers[i] === questionData.answer;
		var button = new AnswerButton(allAnswers[i], isCorrect);
		button.x = 400 + i * 300;
		button.y = 600;
		answerButtons.push(button);
		game.addChild(button);
	}
}
function startNewQuestion() {
	if (!gameRunning) {
		return;
	}
	currentQuestion = generateQuestion();
	questionText.setText(currentQuestion.question);
	createAnswerButtons(currentQuestion);
	questionAnswered = false;
	questionTimer = 0;
	// Create new cat
	currentCat = new Cat();
	currentCat.x = 500 + Math.random() * 1000;
	currentCat.y = 800;
	currentCat.speed = 1 + difficulty * 0.5;
	game.addChild(currentCat);
}
function handleAnswer(isCorrect) {
	if (questionAnswered || !gameRunning) {
		return;
	}
	questionAnswered = true;
	if (isCorrect) {
		// Correct answer
		LK.getSound('correct').play();
		currentCat.saved = true;
		catsRescued++;
		LK.setScore(catsRescued);
		scoreText.setText('Cats Rescued: ' + catsRescued);
		// Flash cat green
		LK.effects.flashObject(currentCat, 0x00FF00, 500);
		// Move firefighter and net to cat's x position
		tween(firefighter, {
			x: currentCat.x
		}, {
			duration: 800
		});
		tween(net, {
			x: currentCat.x
		}, {
			duration: 800
		});
		// Move cat to safety
		tween(currentCat, {
			x: currentCat.x,
			y: net.y
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				if (currentCat) {
					currentCat.destroy();
					currentCat = null;
				}
			}
		});
		// Increase difficulty every 5 cats
		if (catsRescued % 5 === 0) {
			difficulty++;
			maxQuestionTime = Math.max(120, maxQuestionTime - 30);
		}
		// Start next question after delay
		LK.setTimeout(function () {
			startNewQuestion();
		}, 1500);
	} else {
		// Wrong answer
		LK.getSound('wrong').play();
		lives--;
		livesText.setText('Lives: ' + lives);
		// Flash screen red
		LK.effects.flashScreen(0xFF0000, 500);
		if (lives <= 0) {
			gameRunning = false;
			LK.showGameOver();
		} else {
			// Start next question after delay
			LK.setTimeout(function () {
				if (currentCat) {
					currentCat.destroy();
					currentCat = null;
				}
				startNewQuestion();
			}, 1500);
		}
	}
	// Clear answer buttons
	for (var i = answerButtons.length - 1; i >= 0; i--) {
		answerButtons[i].destroy();
		answerButtons.splice(i, 1);
	}
	questionText.setText('');
}
// Generate smoke effects
var smokeTimer = 0;
game.update = function () {
	if (!gameRunning) {
		return;
	}
	// Check if cat fell without being saved
	if (currentCat && !currentCat.saved && currentCat.fallen) {
		LK.getSound('fall').play();
		lives--;
		livesText.setText('Lives: ' + lives);
		// Flash screen red
		LK.effects.flashScreen(0xFF0000, 500);
		if (lives <= 0) {
			gameRunning = false;
			LK.showGameOver();
		} else {
			currentCat.destroy();
			currentCat = null;
			startNewQuestion();
		}
	}
	// Question timeout
	if (currentQuestion && !questionAnswered) {
		questionTimer++;
		if (questionTimer >= maxQuestionTime) {
			handleAnswer(false);
		}
	}
	// Generate smoke
	smokeTimer++;
	if (smokeTimer % 20 === 0) {
		var smoke = new Smoke();
		smoke.x = 300 + Math.random() * 1400;
		smoke.y = 1800 + Math.random() * 400;
		smokes.push(smoke);
		game.addChild(smoke);
	}
	// Clean up destroyed smoke
	for (var i = smokes.length - 1; i >= 0; i--) {
		if (smokes[i].destroyed) {
			smokes.splice(i, 1);
		}
	}
};
// Start first question
startNewQuestion();

===================================================================
--- original.js
+++ change.js
@@ -15,9 +15,11 @@
 	self.answer = answer;
 	self.isCorrect = isCorrect;
 	var answerText = new Text2(answer.toString(), {
 		size: 60,
-		fill: 0xFFFFFF
+		fill: 0xFFFFFF,
+		stroke: 0x000000,
+		strokeThickness: 4
 	});
 	answerText.anchor.set(0.5, 0.5);
 	self.addChild(answerText);
 	self.down = function (x, y, obj) {
@@ -115,9 +117,11 @@
 scoreText.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreText);
 var questionText = new Text2('', {
 	size: 100,
-	fill: 0x000000
+	fill: 0xFFFFFF,
+	stroke: 0x000000,
+	strokeThickness: 8
 });
 questionText.anchor.set(0.5, 0.5);
 questionText.x = 1024;
 questionText.y = 400;