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

/**** 
* Classes
****/ 
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.maxSpeed = 8;
	self.acceleration = 0.3;
	self.deceleration = 0.2;
	self.update = function () {
		// Apply speed limits
		if (self.speed > self.maxSpeed) self.speed = self.maxSpeed;
		if (self.speed < -self.maxSpeed) self.speed = -self.maxSpeed;
		// Apply deceleration when no input
		if (self.speed > 0) {
			self.speed -= self.deceleration;
			if (self.speed < 0) self.speed = 0;
		} else if (self.speed < 0) {
			self.speed += self.deceleration;
			if (self.speed > 0) self.speed = 0;
		}
		self.x += self.speed;
		// Keep player car within screen bounds
		if (self.x < 60) self.x = 60;
		if (self.x > 1988) self.x = 1988;
	};
	return self;
});
var RoadLine = Container.expand(function () {
	var self = Container.call(this);
	var lineGraphics = self.attachAsset('roadLine', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.y += gameSpeed;
	};
	return self;
});
var TrafficCar = Container.expand(function (carType) {
	var self = Container.call(this);
	var assetId = carType || 'enemyCar';
	var carGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8 + Math.random() * 4;
	self.type = carType;
	self.update = function () {
		self.y += self.speed + gameSpeed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
// Menu system
var gameState = 'menu'; // 'menu', 'playing', 'tutorial'
var menuContainer = null;
var playerCar = null;
var trafficCars = [];
var roadLines = [];
var gameSpeed = 6;
var spawnTimer = 0;
var lineSpawnTimer = 0;
var speedIncreaseTimer = 0;
var distanceScore = 0;
var nearMissScore = 0;
var lanes = [400, 650, 900, 1150, 1400];
var dragNode = null;
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create speed display
var speedTxt = new Text2('Speed: 6', {
	size: 60,
	fill: 0xFFFFFF
});
speedTxt.anchor.set(1, 0);
speedTxt.y = 100;
LK.gui.topRight.addChild(speedTxt);
// Create best score display
var bestScore = storage.bestScore || 0;
var bestScoreTxt = new Text2('Best: ' + bestScore, {
	size: 60,
	fill: 0xFF0000
});
bestScoreTxt.anchor.set(0, 0);
bestScoreTxt.y = 200;
LK.gui.topLeft.addChild(bestScoreTxt);
// Create menu
menuContainer = game.addChild(new Container());
// Menu title
var titleText = new Text2('Highway Dash', {
	size: 120,
	fill: 0xFFFFFF
});
titleText.anchor.set(0.5, 0.5);
titleText.x = 1024;
titleText.y = 800;
menuContainer.addChild(titleText);
// Play button
var playButton = new Text2('PLAY', {
	size: 80,
	fill: 0x00FF00
});
playButton.anchor.set(0.5, 0.5);
playButton.x = 1024;
playButton.y = 1200;
playButton.down = function (x, y, obj) {
	startGame();
};
menuContainer.addChild(playButton);
// Tutorial button
var tutorialButton = new Text2('TUTORIAL', {
	size: 80,
	fill: 0x0099FF
});
tutorialButton.anchor.set(0.5, 0.5);
tutorialButton.x = 1024;
tutorialButton.y = 1400;
tutorialButton.down = function (x, y, obj) {
	startTutorial();
};
menuContainer.addChild(tutorialButton);
// Hide game UI initially
scoreTxt.visible = false;
speedTxt.visible = false;
bestScoreTxt.visible = false;
// Setup initial controls
setupGameControls();
function spawnTrafficCar() {
	var carType = Math.random() < 0.3 ? 'truck' : 'enemyCar';
	var trafficCar = new TrafficCar(carType);
	var laneIndex = Math.floor(Math.random() * lanes.length);
	trafficCar.x = lanes[laneIndex];
	trafficCar.y = -100;
	trafficCars.push(trafficCar);
	game.addChild(trafficCar);
}
function checkNearMiss(car) {
	var distance = Math.sqrt(Math.pow(playerCar.x - car.x, 2) + Math.pow(playerCar.y - car.y, 2));
	if (distance < 200 && distance > 120) {
		if (!car.nearMissTriggered) {
			car.nearMissTriggered = true;
			nearMissScore += 10;
			LK.getSound('whoosh').play();
			// Flash effect for near miss
			tween(car, {
				tint: 0xffff00
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(car, {
						tint: 0xffffff
					}, {
						duration: 100
					});
				}
			});
		}
	}
}
function startGame() {
	gameState = 'playing';
	menuContainer.visible = false;
	scoreTxt.visible = true;
	speedTxt.visible = true;
	bestScoreTxt.visible = true;
	// Reset game variables
	trafficCars = [];
	roadLines = [];
	gameSpeed = 6;
	spawnTimer = 0;
	lineSpawnTimer = 0;
	speedIncreaseTimer = 0;
	distanceScore = 0;
	nearMissScore = 0;
	LK.setScore(0);
	// Clear existing traffic cars and road lines
	for (var i = 0; i < trafficCars.length; i++) {
		trafficCars[i].destroy();
	}
	for (var j = 0; j < roadLines.length; j++) {
		roadLines[j].destroy();
	}
	trafficCars = [];
	roadLines = [];
	// Add road background
	var roadBackground = game.addChild(LK.getAsset('roadBackground', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	roadBackground.x = 1024;
	roadBackground.y = 1366;
	// Add road shoulders (grass)
	var leftShoulder = game.addChild(LK.getAsset('roadShoulder', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	leftShoulder.x = 100;
	leftShoulder.y = 1366;
	var rightShoulder = game.addChild(LK.getAsset('roadShoulder', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	rightShoulder.x = 1948;
	rightShoulder.y = 1366;
	// Initialize player car
	if (!playerCar) {
		playerCar = game.addChild(new PlayerCar());
	}
	playerCar.x = 1024;
	playerCar.y = 2200;
	// Move player car to front to ensure it renders on top of road elements
	game.removeChild(playerCar);
	game.addChild(playerCar);
	// Create initial road lines
	for (var i = 0; i < 8; i++) {
		for (var lane = 1; lane < lanes.length; lane++) {
			var roadLine = new RoadLine();
			roadLine.x = lanes[lane] - 75;
			roadLine.y = i * 200;
			roadLines.push(roadLine);
			game.addChild(roadLine);
		}
	}
}
function startTutorial() {
	gameState = 'tutorial';
	menuContainer.visible = false;
	// Create tutorial container
	var tutorialContainer = game.addChild(new Container());
	// Tutorial text
	var tutorialText = new Text2('How to Play:\n\nDrag left and right to move your car\nAvoid traffic to survive\nScore points by dodging cars\n\nTap anywhere to return to menu', {
		size: 60,
		fill: 0xFFFFFF
	});
	tutorialText.anchor.set(0.5, 0.5);
	tutorialText.x = 1024;
	tutorialText.y = 1366;
	tutorialContainer.addChild(tutorialText);
	// Tutorial tap handler
	game.down = function (x, y, obj) {
		tutorialContainer.destroy();
		gameState = 'menu';
		menuContainer.visible = true;
		setupGameControls();
	};
}
function setupGameControls() {
	game.down = function (x, y, obj) {
		if (gameState !== 'playing') return;
		dragNode = {
			lastX: x
		};
		handleMove(x, y, obj);
	};
	game.up = function (x, y, obj) {
		if (gameState !== 'playing') return;
		dragNode = null;
	};
}
function handleMove(x, y, obj) {
	if (dragNode) {
		var deltaX = x - dragNode.lastX;
		dragNode.lastX = x;
		// Move player car based on drag
		if (deltaX > 0) {
			playerCar.speed += playerCar.acceleration;
		} else if (deltaX < 0) {
			playerCar.speed -= playerCar.acceleration;
		}
	}
}
game.move = function (x, y, obj) {
	if (gameState === 'playing') {
		handleMove(x, y, obj);
	}
};
game.update = function () {
	// Only update game logic when playing
	if (gameState !== 'playing') return;
	// Update distance score
	distanceScore += 1;
	var totalScore = distanceScore + nearMissScore;
	LK.setScore(totalScore);
	scoreTxt.setText('Score: ' + totalScore);
	speedTxt.setText('Speed: ' + gameSpeed.toFixed(1));
	// Increase game speed over time
	speedIncreaseTimer++;
	if (speedIncreaseTimer > 180) {
		// Every 3 seconds at 60fps
		gameSpeed += 0.5;
		speedIncreaseTimer = 0;
	}
	// Spawn traffic cars
	spawnTimer++;
	var spawnRate = Math.max(60 - Math.floor(gameSpeed), 30);
	if (spawnTimer > spawnRate) {
		spawnTrafficCar();
		spawnTimer = 0;
	}
	// Spawn road lines
	lineSpawnTimer++;
	if (lineSpawnTimer > 50) {
		for (var lane = 1; lane < lanes.length; lane++) {
			var roadLine = new RoadLine();
			roadLine.x = lanes[lane] - 75;
			roadLine.y = -30;
			roadLines.push(roadLine);
			game.addChild(roadLine);
		}
		lineSpawnTimer = 0;
		// Move player car to front to ensure it stays on top of road lines
		if (playerCar) {
			game.removeChild(playerCar);
			game.addChild(playerCar);
		}
	}
	// Update and check traffic cars
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		var car = trafficCars[i];
		// Check for collision
		if (playerCar.intersects(car)) {
			// Play crash sound
			LK.getSound('crash').play();
			// Update best score if current score is higher
			var currentScore = distanceScore + nearMissScore;
			var bestScore = storage.bestScore || 0;
			if (currentScore > bestScore) {
				storage.bestScore = currentScore;
				// Update best score display in game
				bestScoreTxt.setText('Best: ' + currentScore);
			}
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		// Check for near miss
		checkNearMiss(car);
		// Remove cars that are off screen
		if (car.y > 2800) {
			car.destroy();
			trafficCars.splice(i, 1);
		}
	}
	// Update and remove road lines
	for (var j = roadLines.length - 1; j >= 0; j--) {
		var line = roadLines[j];
		if (line.y > 2800) {
			line.destroy();
			roadLines.splice(j, 1);
		}
	}
};