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

/**** 
* Classes
****/ 
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = gameSpeed;
	self.update = function () {
		self.y += self.speed;
		// Simple rotation animation
		coinGraphics.rotation += 0.1;
	};
	return self;
});
var Obstacle = Container.expand(function (type) {
	var self = Container.call(this);
	var assetName = 'obstacle' + (type || 1);
	var obstacleGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = gameSpeed;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.lane = 1; // 0=left, 1=center, 2=right
	self.targetX = 0;
	self.update = function () {
		// Smooth movement to target lane
		var diff = self.targetX - self.x;
		if (Math.abs(diff) > 5) {
			self.x += diff * 0.15;
		} else {
			self.x = self.targetX;
		}
	};
	return self;
});
var QuestionPanel = Container.expand(function () {
	var self = Container.call(this);
	var background = self.attachAsset('questionBg', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.questionText = new Text2('', {
		size: 80,
		fill: 0x000000
	});
	self.questionText.anchor.set(0.5, 0.5);
	self.questionText.y = -150;
	self.addChild(self.questionText);
	self.timerText = new Text2('9', {
		size: 60,
		fill: 0xFF0000
	});
	self.timerText.anchor.set(0.5, 0.5);
	self.timerText.y = -250;
	self.addChild(self.timerText);
	self.answerButtons = [];
	for (var i = 0; i < 3; i++) {
		var button = self.addChild(LK.getAsset('answerButton', {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		button.x = (i - 1) * 450;
		button.y = 50;
		var buttonText = new Text2('', {
			size: 50,
			fill: 0x000000
		});
		buttonText.anchor.set(0.5, 0.5);
		button.addChild(buttonText);
		button.text = buttonText;
		button.answerValue = 0;
		self.answerButtons.push(button);
	}
	self.setupQuestion = function () {
		var num1 = Math.floor(Math.random() * 9) + 2;
		var num2 = Math.floor(Math.random() * 9) + 2;
		var correctAnswer = num1 * num2;
		self.questionText.setText(num1 + ' × ' + num2 + ' = ?');
		self.correctAnswer = correctAnswer;
		// Generate wrong answers
		var wrongAnswers = [];
		while (wrongAnswers.length < 2) {
			var wrong = correctAnswer + Math.floor(Math.random() * 20) - 10;
			if (wrong !== correctAnswer && wrong > 0 && wrongAnswers.indexOf(wrong) === -1) {
				wrongAnswers.push(wrong);
			}
		}
		// Randomize button positions
		var answers = [correctAnswer, wrongAnswers[0], wrongAnswers[1]];
		for (var i = 0; i < 3; i++) {
			var randomIndex = Math.floor(Math.random() * answers.length);
			var answer = answers.splice(randomIndex, 1)[0];
			self.answerButtons[i].answerValue = answer;
			self.answerButtons[i].text.setText(answer.toString());
		}
		questionTimer = 9;
		self.timerText.setText(questionTimer.toString());
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game variables
// backpack
// desk
// fence
var gameSpeed = 8;
var speedIncrement = 0.005;
var maxSpeed = 20;
var lanePositions = [2048 / 2 - 300, 2048 / 2, 2048 / 2 + 300];
var groundY = 2732 - 100;
var obstacles = [];
var coins = [];
var obstacleSpawnTimer = 0;
var coinSpawnTimer = 0;
var scoreMultiplier = 1.0;
var questionActive = false;
var questionTimer = 0;
var questionPanel = null;
var player = game.addChild(new Player());
player.x = lanePositions[1];
player.y = groundY;
player.targetX = lanePositions[1];
// Ground
var ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
}));
ground.x = 0;
ground.y = groundY;
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(1, 0);
scoreText.x = -20;
scoreText.y = 20;
LK.gui.topRight.addChild(scoreText);
var multiplierText = new Text2('Multiplier: 1.0x', {
	size: 50,
	fill: 0xFFFF00
});
multiplierText.anchor.set(1, 0);
multiplierText.x = -20;
multiplierText.y = 80;
LK.gui.topRight.addChild(multiplierText);
function updateUI() {
	scoreText.setText('Score: ' + LK.getScore());
	multiplierText.setText('Multiplier: ' + scoreMultiplier.toFixed(1) + 'x');
}
function switchLane(direction) {
	if (questionActive) return;
	player.lane += direction;
	if (player.lane < 0) player.lane = 0;
	if (player.lane > 2) player.lane = 2;
	player.targetX = lanePositions[player.lane];
}
function spawnObstacle() {
	var lane = Math.floor(Math.random() * 3);
	var type = Math.floor(Math.random() * 3) + 1;
	var obstacle = game.addChild(new Obstacle(type));
	obstacle.x = lanePositions[lane];
	obstacle.y = -100;
	obstacle.lane = lane;
	obstacles.push(obstacle);
}
function spawnCoin() {
	var lane = Math.floor(Math.random() * 3);
	var coin = game.addChild(new Coin());
	coin.x = lanePositions[lane];
	coin.y = -50;
	coin.lane = lane;
	coins.push(coin);
}
function showQuestion() {
	questionActive = true;
	questionPanel = game.addChild(new QuestionPanel());
	questionPanel.x = 2048 / 2;
	questionPanel.y = 2732 / 2;
	questionPanel.setupQuestion();
}
function hideQuestion() {
	if (questionPanel) {
		questionPanel.destroy();
		questionPanel = null;
	}
	questionActive = false;
}
function answerQuestion(selectedAnswer) {
	if (!questionActive) return;
	var correct = selectedAnswer === questionPanel.correctAnswer;
	if (correct) {
		scoreMultiplier += 0.1;
		LK.getSound('correct').play();
	} else {
		scoreMultiplier = 1.0;
		LK.getSound('wrong').play();
	}
	hideQuestion();
	updateUI();
}
// Touch controls
game.down = function (x, y, obj) {
	if (questionActive && questionPanel) {
		// Check if clicking on answer buttons
		for (var i = 0; i < questionPanel.answerButtons.length; i++) {
			var button = questionPanel.answerButtons[i];
			var buttonPos = game.toLocal(button.parent.toGlobal(button.position));
			if (Math.abs(x - buttonPos.x) < 200 && Math.abs(y - buttonPos.y) < 50) {
				answerQuestion(button.answerValue);
				return;
			}
		}
	} else {
		// Lane switching
		if (x < 2048 / 2) {
			switchLane(-1); // Move left
		} else {
			switchLane(1); // Move right
		}
	}
};
game.update = function () {
	if (questionActive) {
		// Handle question timer
		if (LK.ticks % 60 === 0) {
			// Every second
			questionTimer--;
			if (questionPanel) {
				questionPanel.timerText.setText(questionTimer.toString());
			}
			if (questionTimer <= 0) {
				// Time's up - wrong answer
				scoreMultiplier = 1.0;
				hideQuestion();
				updateUI();
			}
		}
		return; // Don't update game objects during question
	}
	// Increase speed gradually
	if (gameSpeed < maxSpeed) {
		gameSpeed += speedIncrement;
	}
	// Spawn obstacles
	obstacleSpawnTimer++;
	if (obstacleSpawnTimer > 120 - gameSpeed * 2) {
		// Spawn more frequently as speed increases
		spawnObstacle();
		obstacleSpawnTimer = 0;
	}
	// Spawn coins
	coinSpawnTimer++;
	if (coinSpawnTimer > 180) {
		spawnCoin();
		coinSpawnTimer = 0;
	}
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		obstacle.speed = gameSpeed;
		// Check collision with player
		if (obstacle.lane === player.lane && Math.abs(obstacle.y - player.y) < 80 && Math.abs(obstacle.x - player.x) < 60) {
			LK.getSound('hit').play();
			showQuestion();
			obstacle.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Remove off-screen obstacles
		if (obstacle.y > 2732 + 100) {
			obstacle.destroy();
			obstacles.splice(i, 1);
		}
	}
	// Update coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		coin.speed = gameSpeed;
		// Check collection
		if (coin.lane === player.lane && Math.abs(coin.y - player.y) < 60 && Math.abs(coin.x - player.x) < 50) {
			var coinPoints = Math.round(10 * scoreMultiplier);
			LK.setScore(LK.getScore() + coinPoints);
			LK.getSound('collect').play();
			updateUI();
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
		// Remove off-screen coins
		if (coin.y > 2732 + 50) {
			coin.destroy();
			coins.splice(i, 1);
		}
	}
};
updateUI();