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

/**** 
* Classes
****/ 
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lane = 2; // Start in middle lane (0,1,2,3,4)
	self.targetX = 0;
	self.update = function () {
		// Smooth movement towards target position
		var diff = self.targetX - self.x;
		if (Math.abs(diff) > 2) {
			self.x += diff * 0.2;
		}
	};
	self.setLane = function (lane) {
		if (lane < 0) lane = 0;
		if (lane > 4) lane = 4;
		self.lane = lane;
		self.targetX = lanePositions[lane];
	};
	return self;
});
var RoadLine = Container.expand(function () {
	var self = Container.call(this);
	var lineGraphics = self.attachAsset('roadLine', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732 + 50) {
			self.y -= 2732 + 200;
		}
	};
	return self;
});
var TrafficCar = Container.expand(function () {
	var self = Container.call(this);
	var carTypes = ['trafficCar1', 'trafficCar2', 'trafficCar3'];
	var carType = carTypes[Math.floor(Math.random() * carTypes.length)];
	var carGraphics = self.attachAsset(carType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3 + Math.random() * 4; // Random speed between 3-7
	self.baseSpeed = self.speed;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x34495e
});

/**** 
* Game Code
****/ 
var lanePositions = [400, 600, 800, 1000, 1200]; // X positions for 5 lanes
var roadWidth = 1000;
var roadX = 2048 / 2;
// Create road background
var road = game.addChild(LK.getAsset('road', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.6,
	scaleY: 9,
	x: roadX,
	y: 2732 / 2
}));
// Create road lines
var roadLines = [];
for (var i = 1; i < 5; i++) {
	for (var j = 0; j < 8; j++) {
		var line = new RoadLine();
		line.x = lanePositions[i] - 50;
		line.y = j * 400 - 200;
		roadLines.push(line);
		game.addChild(line);
	}
}
// Create player car
var playerCar = game.addChild(new PlayerCar());
playerCar.x = lanePositions[2];
playerCar.y = 2400;
playerCar.targetX = playerCar.x;
// Game variables
var trafficCars = [];
var distance = 0;
var gameSpeed = 1;
var spawnTimer = 0;
var spawnInterval = 120; // Start spawning every 2 seconds at 60fps
var dragActive = false;
var dragStartX = 0;
var lastPlayerX = playerCar.x;
// UI elements
var distanceText = new Text2('0m', {
	size: 80,
	fill: 0xFFFFFF
});
distanceText.anchor.set(0.5, 0);
LK.gui.top.addChild(distanceText);
distanceText.y = 100;
// Spawn traffic car
function spawnTrafficCar() {
	var lane = Math.floor(Math.random() * 5);
	var car = new TrafficCar();
	car.x = lanePositions[lane];
	car.y = -100;
	car.speed *= gameSpeed;
	trafficCars.push(car);
	game.addChild(car);
}
// Touch/drag controls
game.down = function (x, y, obj) {
	dragActive = true;
	dragStartX = x;
	lastPlayerX = playerCar.x;
};
game.move = function (x, y, obj) {
	if (dragActive) {
		var dragDistance = x - dragStartX;
		var newX = lastPlayerX + dragDistance;
		// Find closest lane
		var closestLane = 0;
		var closestDistance = Math.abs(newX - lanePositions[0]);
		for (var i = 1; i < lanePositions.length; i++) {
			var distance = Math.abs(newX - lanePositions[i]);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestLane = i;
			}
		}
		playerCar.setLane(closestLane);
	}
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// Main game update
game.update = function () {
	// Update distance and speed
	distance += 0.5;
	LK.setScore(Math.floor(distance));
	distanceText.setText(Math.floor(distance) + 'm');
	// Increase difficulty over time
	if (LK.ticks % 1800 === 0) {
		// Every 30 seconds
		gameSpeed += 0.1;
		spawnInterval = Math.max(60, spawnInterval - 5);
	}
	// Update road line speeds
	for (var i = 0; i < roadLines.length; i++) {
		roadLines[i].speed = 5 * gameSpeed;
	}
	// Spawn new traffic cars
	spawnTimer++;
	if (spawnTimer >= spawnInterval) {
		spawnTrafficCar();
		spawnTimer = 0;
	}
	// Update and check collisions with traffic cars
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		var car = trafficCars[i];
		// Remove cars that are off screen
		if (car.y > 2732 + 100) {
			car.destroy();
			trafficCars.splice(i, 1);
			continue;
		}
		// Check collision with player
		if (car.intersects(playerCar)) {
			// Game over
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
};