/**** 
* Classes
****/ 
var RoadMarking = Container.expand(function () {
	var self = Container.call(this);
	var markingGraphics = self.attachAsset('roadLane', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var TrafficCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('trafficCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.passed = false;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c3e50
});

/**** 
* Game Code
****/ 
// Game dimensions: 2048x2732
var LANE_WIDTH = 400;
var LANE_COUNT = 3;
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
// Lane positions (center of each lane)
var lanePositions = [GAME_WIDTH / 2 - LANE_WIDTH,
// Left lane
GAME_WIDTH / 2,
// Center lane
GAME_WIDTH / 2 + LANE_WIDTH // Right lane
];
// Player car
var playerCar = game.addChild(LK.getAsset('playerCar', {
	anchorX: 0.5,
	anchorY: 0.5
}));
playerCar.x = lanePositions[1]; // Start in center lane
playerCar.y = GAME_HEIGHT - 300;
var currentLane = 1;
// Game variables
var trafficCars = [];
var roadMarkings = [];
var gameSpeed = 8;
var spawnTimer = 0;
var spawnInterval = 90;
var markingTimer = 0;
var markingInterval = 30;
var musicChanged = false;
// Score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Speed display
var speedTxt = new Text2('Speed: 3x', {
	size: 50,
	fill: 0xFFFFFF
});
speedTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(speedTxt);
speedTxt.x = -50;
speedTxt.y = 200;
function updateSpeedDisplay() {
	var baseSpeedLevel = selectedDifficulty === 'impossible' ? 10 : selectedDifficulty === 'hard' ? 6 : 3;
	var speedIncrease;
	if (selectedDifficulty === 'impossible') {
		speedIncrease = Math.floor(LK.getScore() / 20);
	} else if (selectedDifficulty === 'hard') {
		speedIncrease = Math.floor(LK.getScore() / 30);
	} else {
		speedIncrease = Math.floor(LK.getScore() / 50);
	}
	var speedLevel = speedIncrease + baseSpeedLevel;
	speedTxt.setText('Speed: ' + speedLevel + 'x');
}
function spawnTrafficCar() {
	// After 650 points, spawn 3 cars (2 in one lane, 1 in adjacent) for maximum difficulty
	if (LK.getScore() >= 650) {
		// Spawn 2 cars in a random lane with some vertical spacing
		var randomLane = Math.floor(Math.random() * LANE_COUNT);
		// First car
		var car1 = new TrafficCar();
		car1.x = lanePositions[randomLane];
		car1.y = -100;
		car1.speed = gameSpeed;
		trafficCars.push(car1);
		game.addChild(car1);
		// Second car with spacing
		var car2 = new TrafficCar();
		car2.x = lanePositions[randomLane];
		car2.y = -350; // Spawn second car further up with spacing
		car2.speed = gameSpeed;
		trafficCars.push(car2);
		game.addChild(car2);
		// Third car in adjacent lane (50% chance)
		if (Math.random() < 0.5) {
			var adjacentLanes = [];
			if (randomLane > 0) adjacentLanes.push(randomLane - 1);
			if (randomLane < LANE_COUNT - 1) adjacentLanes.push(randomLane + 1);
			if (adjacentLanes.length > 0) {
				var adjacentLane = adjacentLanes[Math.floor(Math.random() * adjacentLanes.length)];
				var car3 = new TrafficCar();
				car3.x = lanePositions[adjacentLane];
				car3.y = -225; // Position between the two cars vertically
				car3.speed = gameSpeed;
				trafficCars.push(car3);
				game.addChild(car3);
			}
		}
	} else if (LK.getScore() >= 450) {
		// Spawn 2 cars in a random lane with some vertical spacing
		var randomLane = Math.floor(Math.random() * LANE_COUNT);
		// First car
		var car1 = new TrafficCar();
		car1.x = lanePositions[randomLane];
		car1.y = -100;
		car1.speed = gameSpeed;
		trafficCars.push(car1);
		game.addChild(car1);
		// Second car with spacing
		var car2 = new TrafficCar();
		car2.x = lanePositions[randomLane];
		car2.y = -350; // Spawn second car further up with spacing
		car2.speed = gameSpeed;
		trafficCars.push(car2);
		game.addChild(car2);
	} else {
		// Original behavior - spawn single car
		var car = new TrafficCar();
		var randomLane = Math.floor(Math.random() * LANE_COUNT);
		car.x = lanePositions[randomLane];
		car.y = -100;
		car.speed = gameSpeed;
		trafficCars.push(car);
		game.addChild(car);
	}
}
function spawnRoadMarking() {
	for (var i = 0; i < LANE_COUNT - 1; i++) {
		var marking = new RoadMarking();
		marking.x = GAME_WIDTH / 2 - LANE_WIDTH / 2 + i * LANE_WIDTH;
		marking.y = -50;
		marking.speed = gameSpeed;
		roadMarkings.push(marking);
		game.addChild(marking);
	}
}
function changeLane(direction) {
	var targetLane = currentLane + direction;
	if (targetLane >= 0 && targetLane < LANE_COUNT) {
		currentLane = targetLane;
		playerCar.x = lanePositions[currentLane];
	}
}
// Touch controls
game.down = function (x, y, obj) {
	// Only allow lane changes if game has started
	if (!gameStarted) return;
	if (x < GAME_WIDTH / 2) {
		// Left side tap - move left
		changeLane(-1);
	} else {
		// Right side tap - move right
		changeLane(1);
	}
};
// Game state variables
var gameStarted = false;
var selectedDifficulty = 'easy'; // Default difficulty
// Difficulty selection buttons
var easyButton = new Text2('EASY', {
	size: 120,
	fill: 0x00ff00
});
easyButton.anchor.set(0.5, 0.5);
easyButton.x = GAME_WIDTH / 2;
easyButton.y = GAME_HEIGHT / 2 - 150;
game.addChild(easyButton);
var hardButton = new Text2('HARD', {
	size: 120,
	fill: 0xff0000
});
hardButton.anchor.set(0.5, 0.5);
hardButton.x = GAME_WIDTH / 2;
hardButton.y = GAME_HEIGHT / 2;
game.addChild(hardButton);
var impossibleButton = new Text2('IMPOSSIBLE', {
	size: 120,
	fill: 0xff00ff
});
impossibleButton.anchor.set(0.5, 0.5);
impossibleButton.x = GAME_WIDTH / 2;
impossibleButton.y = GAME_HEIGHT / 2 + 200;
game.addChild(impossibleButton);
// Button interaction handlers
easyButton.down = function (x, y, obj) {
	selectedDifficulty = 'easy';
	startGame();
};
hardButton.down = function (x, y, obj) {
	selectedDifficulty = 'hard';
	startGame();
};
impossibleButton.down = function (x, y, obj) {
	selectedDifficulty = 'impossible';
	startGame();
};
function startGame() {
	gameStarted = true;
	// Remove difficulty buttons
	easyButton.destroy();
	hardButton.destroy();
	impossibleButton.destroy();
	// Start background music
	LK.playMusic('highway_music');
	// Set initial speed display based on difficulty
	if (selectedDifficulty === 'impossible') {
		speedTxt.setText('Speed: 10x');
	} else if (selectedDifficulty === 'hard') {
		speedTxt.setText('Speed: 6x');
	} else {
		speedTxt.setText('Speed: 3x');
	}
}
// Main game update
game.update = function () {
	// Only update game if started
	if (!gameStarted) return;
	// Update speed based on score and difficulty
	var baseSpeedLevel = selectedDifficulty === 'impossible' ? 10 : selectedDifficulty === 'hard' ? 6 : 3;
	var speedIncrease;
	if (selectedDifficulty === 'impossible') {
		speedIncrease = Math.floor(LK.getScore() / 20);
	} else if (selectedDifficulty === 'hard') {
		speedIncrease = Math.floor(LK.getScore() / 30);
	} else {
		speedIncrease = Math.floor(LK.getScore() / 50);
	}
	var speedLevel = speedIncrease + baseSpeedLevel;
	gameSpeed = 8 + (speedLevel - 1) * 2;
	// Change music at 450 points
	if (LK.getScore() >= 450 && !musicChanged) {
		musicChanged = true;
		LK.playMusic('highway_music_fast');
	}
	// Spawn traffic cars
	spawnTimer++;
	if (spawnTimer >= spawnInterval) {
		spawnTrafficCar();
		spawnTimer = 0;
		spawnInterval = Math.max(30, 90 - speedLevel * 5); // Spawn more frequently as speed increases
	}
	// Spawn road markings
	markingTimer++;
	if (markingTimer >= markingInterval) {
		spawnRoadMarking();
		markingTimer = 0;
	}
	// Update traffic cars
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		var car = trafficCars[i];
		car.speed = gameSpeed;
		// Check if car passed player (award points)
		if (!car.passed && car.y > playerCar.y + 150) {
			car.passed = true;
			LK.setScore(LK.getScore() + 10);
			scoreTxt.setText(LK.getScore());
			updateSpeedDisplay();
			LK.getSound('pass').play();
		}
		// Check collision with player
		if (car.intersects(playerCar)) {
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		// Remove cars that are off screen
		if (car.y > GAME_HEIGHT + 100) {
			car.destroy();
			trafficCars.splice(i, 1);
		}
	}
	// Update road markings
	for (var j = roadMarkings.length - 1; j >= 0; j--) {
		var marking = roadMarkings[j];
		marking.speed = gameSpeed;
		// Remove markings that are off screen
		if (marking.y > GAME_HEIGHT + 50) {
			marking.destroy();
			roadMarkings.splice(j, 1);
		}
	}
};