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

/**** 
* Classes
****/ 
var Bush = Container.expand(function () {
	var self = Container.call(this);
	var bushGraphics = self.attachAsset('bush', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = 6;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.targetX = 0;
	self.lane = 1; // 0=left, 1=center, 2=right
	return self;
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
		coinGraphics.rotation += 0.1;
	};
	return self;
});
var EnemyCar = Container.expand(function () {
	var self = Container.call(this);
	var carTypes = ['enemyCar1', 'enemyCar2', 'enemyCar3'];
	var randomType = carTypes[Math.floor(Math.random() * carTypes.length)];
	var carGraphics = self.attachAsset(randomType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var FuelTank = Container.expand(function () {
	var self = Container.call(this);
	var fuelTankGraphics = self.attachAsset('fuelTank', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
		fuelTankGraphics.rotation += 0.05;
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	// Random power-up type: 0=speed boost, 1=shield
	self.powerType = Math.floor(Math.random() * 2);
	var powerUpGraphics;
	if (self.powerType === 0) {
		// Speed boost power-up (blue)
		powerUpGraphics = self.attachAsset('coin', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		powerUpGraphics.tint = 0x0099ff; // Blue tint
	} else {
		// Shield power-up (purple)
		powerUpGraphics = self.attachAsset('coin', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		powerUpGraphics.tint = 0x9900ff; // Purple tint
	}
	self.speed = 6;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
		powerUpGraphics.rotation += 0.15;
		// Pulsing effect
		powerUpGraphics.scaleX = 1 + Math.sin(LK.ticks * 0.2) * 0.3;
		powerUpGraphics.scaleY = 1 + Math.sin(LK.ticks * 0.2) * 0.3;
	};
	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 = 6;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var SpilledBox = Container.expand(function () {
	var self = Container.call(this);
	var boxGraphics = self.attachAsset('spilledBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var SpilledFuel = Container.expand(function () {
	var self = Container.call(this);
	var spillGraphics = self.attachAsset('spilledFuel', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.lastY = 0;
	self.lastIntersecting = false;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Tree = Container.expand(function () {
	var self = Container.call(this);
	var treeGraphics = self.attachAsset('tree', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = 6;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var playerCar;
var enemyCars = [];
var coins = [];
var roadLines = [];
var trees = [];
var bushes = [];
var gameSpeed = 6;
var lanes = [2048 / 4, 2048 / 2, 3 * 2048 / 4]; // Three lanes
var spawnTimer = 0;
var coinSpawnTimer = 0;
var roadLineSpawnTimer = 0;
var treeSpawnTimer = 0;
var bushSpawnTimer = 0;
var distanceScore = 0;
var fuelTanks = [];
var fuelTankSpawnTimer = 0;
var currentFuel = 100;
var maxFuel = 100;
var fuelConsumptionRate = 0.1;
var dragActive = false;
var showingLeaderboard = false;
var leaderboardContainer;
var leaderboardScores = storage.leaderboard || [];
var gameStartTime = Date.now();
var gameTime = 0;
var spilledFuels = [];
var spilledFuelSpawnTimer = 0;
var spilledBoxes = [];
var spilledBoxSpawnTimer = 0;
var isSliding = false;
var slideDirection = 0;
var slideTimer = 0;
var powerUps = [];
var powerUpSpawnTimer = 0;
var hasShield = false;
var shieldTimer = 0;
var speedBoostTimer = 0;
var hasSpeedBoost = false;
var comboMultiplier = 1;
var comboTimer = 0;
var lastCollectTime = 0;
// Create score display using asset
var scoreDisplay = LK.getAsset('Score', {
	anchorX: 0.5,
	anchorY: 0
});
LK.gui.top.addChild(scoreDisplay);
// Create score text display
var scoreTxt = new Text2('0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = scoreDisplay.x + 60; // Position next to score image
scoreTxt.y = scoreDisplay.y;
LK.gui.top.addChild(scoreTxt);
// Create score button to show/hide score
var scoreButton = new Text2('📊', {
	size: 80,
	fill: 0x00FF00
});
scoreButton.anchor.set(0.5, 0);
scoreButton.x = 2048 - 200;
scoreButton.y = 20;
LK.gui.top.addChild(scoreButton);
// Create leaderboard button
var leaderboardButton = new Text2('🏆', {
	size: 80,
	fill: 0xFFD700
});
leaderboardButton.anchor.set(0.5, 0);
leaderboardButton.x = 2048 - 100;
leaderboardButton.y = 20;
LK.gui.top.addChild(leaderboardButton);
// Score visibility state
var showScore = true;
// Create distance display
var distanceTxt = new Text2('Distance: 0m', {
	size: 60,
	fill: 0xFFFFFF
});
distanceTxt.anchor.set(0.5, 0);
distanceTxt.y = 100;
LK.gui.top.addChild(distanceTxt);
// Create speedometer display
var speedometerTxt = new Text2('Speed: 0 km/h', {
	size: 60,
	fill: 0xFFFFFF
});
speedometerTxt.anchor.set(0.5, 0);
speedometerTxt.y = 170;
LK.gui.top.addChild(speedometerTxt);
// Create fuel display
var fuelTxt = new Text2('Fuel: 100%', {
	size: 60,
	fill: 0x00FF00
});
fuelTxt.anchor.set(0.5, 0);
fuelTxt.y = 240;
LK.gui.top.addChild(fuelTxt);
// Create time display
var timeTxt = new Text2('Time: 0:00', {
	size: 60,
	fill: 0xFFFFFF
});
timeTxt.anchor.set(0.5, 0);
timeTxt.y = 310;
LK.gui.top.addChild(timeTxt);
// Create shield indicator
var shieldTxt = new Text2('', {
	size: 60,
	fill: 0x9900ff
});
shieldTxt.anchor.set(0.5, 0);
shieldTxt.y = 380;
LK.gui.top.addChild(shieldTxt);
// Create speed boost indicator
var speedBoostTxt = new Text2('', {
	size: 60,
	fill: 0x0099ff
});
speedBoostTxt.anchor.set(0.5, 0);
speedBoostTxt.y = 450;
LK.gui.top.addChild(speedBoostTxt);
// Create combo multiplier display
var comboTxt = new Text2('', {
	size: 70,
	fill: 0xFFD700
});
comboTxt.anchor.set(0.5, 0);
comboTxt.y = 520;
LK.gui.top.addChild(comboTxt);
// Create left arrow button
var leftArrow = LK.getAsset('Oktusu', {
	width: 300,
	height: 300,
	anchorX: 0.5,
	anchorY: 0.5
});
leftArrow.x = 200;
leftArrow.y = 2732 - 200;
game.addChild(leftArrow);
// Create left arrow text
var leftArrowTxt = new Text2('←', {
	size: 80,
	fill: 0xFFFFFF
});
leftArrowTxt.anchor.set(0.5, 0.5);
leftArrowTxt.x = leftArrow.x;
leftArrowTxt.y = leftArrow.y;
game.addChild(leftArrowTxt);
// Create right arrow button
var rightArrow = LK.getAsset('Oktusu', {
	width: 300,
	height: 300,
	anchorX: 0.5,
	anchorY: 0.5
});
rightArrow.x = 2048 - 200;
rightArrow.y = 2732 - 200;
game.addChild(rightArrow);
// Create right arrow text
var rightArrowTxt = new Text2('→', {
	size: 80,
	fill: 0xFFFFFF
});
rightArrowTxt.anchor.set(0.5, 0.5);
rightArrowTxt.x = rightArrow.x;
rightArrowTxt.y = rightArrow.y;
game.addChild(rightArrowTxt);
// Gas pedal variables (keeping for boost system)
var isGasPedalPressed = false;
var boostMultiplier = 1.0;
// Function to show leaderboard
function showLeaderboard() {
	if (showingLeaderboard) return;
	showingLeaderboard = true;
	leaderboardContainer = new Container();
	game.addChild(leaderboardContainer);
	// Semi-transparent background
	var background = LK.getAsset('highway', {
		width: 1800,
		height: 2200,
		anchorX: 0.5,
		anchorY: 0.5
	});
	background.x = 2048 / 2;
	background.y = 2732 / 2;
	background.alpha = 0.8;
	background.tint = 0x000000;
	leaderboardContainer.addChild(background);
	// Title
	var titleText = new Text2('🏆 TOP SCORES 🏆', {
		size: 100,
		fill: 0xFFD700
	});
	titleText.anchor.set(0.5, 0);
	titleText.x = 2048 / 2;
	titleText.y = 400;
	leaderboardContainer.addChild(titleText);
	// Display top 10 scores
	var sortedScores = leaderboardScores.slice().sort(function (a, b) {
		return b - a;
	});
	for (var i = 0; i < Math.min(10, sortedScores.length); i++) {
		var rankText = new Text2(i + 1 + '. ' + sortedScores[i] + ' points', {
			size: 80,
			fill: i < 3 ? 0xFFD700 : 0xFFFFFF
		});
		rankText.anchor.set(0.5, 0);
		rankText.x = 2048 / 2;
		rankText.y = 600 + i * 120;
		leaderboardContainer.addChild(rankText);
	}
	// Close button
	var closeButton = new Text2('❌ CLOSE', {
		size: 80,
		fill: 0xFF4444
	});
	closeButton.anchor.set(0.5, 0);
	closeButton.x = 2048 / 2;
	closeButton.y = 2200;
	leaderboardContainer.addChild(closeButton);
}
// Function to hide leaderboard
function hideLeaderboard() {
	if (!showingLeaderboard) return;
	showingLeaderboard = false;
	if (leaderboardContainer) {
		leaderboardContainer.destroy();
		leaderboardContainer = null;
	}
}
// Function to save score to leaderboard
function saveScore(score) {
	leaderboardScores.push(score);
	leaderboardScores.sort(function (a, b) {
		return b - a;
	});
	// Keep only top 20 scores
	if (leaderboardScores.length > 20) {
		leaderboardScores = leaderboardScores.slice(0, 20);
	}
	storage.leaderboard = leaderboardScores;
}
// Create player car
playerCar = game.addChild(new Car());
playerCar.x = lanes[1]; // Start in middle lane
playerCar.y = 2732 - 300;
playerCar.targetX = playerCar.x;
// Touch controls
game.down = function (x, y, obj) {
	// Check if leaderboard is showing and handle close button
	if (showingLeaderboard) {
		var closeButtonBounds = {
			left: 2048 / 2 - 150,
			right: 2048 / 2 + 150,
			top: 2200 - 50,
			bottom: 2200 + 50
		};
		if (x >= closeButtonBounds.left && x <= closeButtonBounds.right && y >= closeButtonBounds.top && y <= closeButtonBounds.bottom) {
			hideLeaderboard();
			return;
		}
		// Ignore other touches when leaderboard is showing
		return;
	}
	// Check if score button is pressed
	var scoreBounds = {
		left: scoreButton.x - 50,
		right: scoreButton.x + 50,
		top: scoreButton.y,
		bottom: scoreButton.y + 80
	};
	if (x >= scoreBounds.left && x <= scoreBounds.right && y >= scoreBounds.top && y <= scoreBounds.bottom) {
		showScore = !showScore;
		if (showScore) {
			scoreDisplay.alpha = 1;
			scoreTxt.alpha = 1;
		} else {
			scoreDisplay.alpha = 0;
			scoreTxt.alpha = 0;
		}
		return;
	}
	// Check if leaderboard button is pressed
	var leaderboardBounds = {
		left: leaderboardButton.x - 50,
		right: leaderboardButton.x + 50,
		top: leaderboardButton.y,
		bottom: leaderboardButton.y + 80
	};
	if (x >= leaderboardBounds.left && x <= leaderboardBounds.right && y >= leaderboardBounds.top && y <= leaderboardBounds.bottom) {
		showLeaderboard();
		return;
	}
	// Check if left arrow is pressed
	var leftArrowBounds = {
		left: leftArrow.x - 150,
		right: leftArrow.x + 150,
		top: leftArrow.y - 150,
		bottom: leftArrow.y + 150
	};
	if (x >= leftArrowBounds.left && x <= leftArrowBounds.right && y >= leftArrowBounds.top && y <= leftArrowBounds.bottom) {
		// Move car to left lane
		if (playerCar.lane > 0) {
			playerCar.lane--;
			playerCar.targetX = lanes[playerCar.lane];
		}
		leftArrow.tint = 0xffff00; // Yellow when pressed
	}
	// Check if right arrow is pressed
	var rightArrowBounds = {
		left: rightArrow.x - 150,
		right: rightArrow.x + 150,
		top: rightArrow.y - 150,
		bottom: rightArrow.y + 150
	};
	if (x >= rightArrowBounds.left && x <= rightArrowBounds.right && y >= rightArrowBounds.top && y <= rightArrowBounds.bottom) {
		// Move car to right lane
		if (playerCar.lane < 2) {
			playerCar.lane++;
			playerCar.targetX = lanes[playerCar.lane];
		}
		rightArrow.tint = 0xffff00; // Yellow when pressed
	}
};
game.move = function (x, y, obj) {
	// Don't allow movement when leaderboard is showing
	if (showingLeaderboard) return;
	var leftArrowBounds = {
		left: leftArrow.x - 150,
		right: leftArrow.x + 150,
		top: leftArrow.y - 150,
		bottom: leftArrow.y + 150
	};
	var rightArrowBounds = {
		left: rightArrow.x - 150,
		right: rightArrow.x + 150,
		top: rightArrow.y - 150,
		bottom: rightArrow.y + 150
	};
};
game.up = function (x, y, obj) {
	// Don't process touches when leaderboard is showing
	if (showingLeaderboard) return;
	// Reset arrow button colors
	leftArrow.tint = 0xffffff;
	rightArrow.tint = 0xffffff;
};
// Main game loop
game.update = function () {
	// Don't update game when leaderboard is showing
	if (showingLeaderboard) return;
	// Update game time
	gameTime = Math.floor((Date.now() - gameStartTime) / 1000);
	var minutes = Math.floor(gameTime / 60);
	var seconds = gameTime % 60;
	var timeString = minutes + ':' + (seconds < 10 ? '0' : '') + seconds;
	timeTxt.setText('Time: ' + timeString);
	// Update power-up timers
	if (hasShield) {
		shieldTimer--;
		shieldTxt.setText('🛡️ Shield: ' + Math.ceil(shieldTimer / 60) + 's');
		if (shieldTimer <= 0) {
			hasShield = false;
			shieldTxt.setText('');
			// Remove shield visual effect
			playerCar.tint = 0xffffff;
		}
	} else {
		shieldTxt.setText('');
	}
	if (hasSpeedBoost) {
		speedBoostTimer--;
		speedBoostTxt.setText('⚡ Boost: ' + Math.ceil(speedBoostTimer / 60) + 's');
		if (speedBoostTimer <= 0) {
			hasSpeedBoost = false;
			speedBoostTxt.setText('');
		}
	} else {
		speedBoostTxt.setText('');
	}
	// Update combo system
	if (comboTimer > 0) {
		comboTimer--;
		comboTxt.setText('Combo x' + comboMultiplier);
		if (comboTimer <= 0) {
			comboMultiplier = 1;
			comboTxt.setText('');
		}
	} else {
		comboTxt.setText('');
	}
	// Reset combo if too much time passed since last collect
	if (Date.now() - lastCollectTime > 3000) {
		comboMultiplier = 1;
		comboTimer = 0;
	}
	// Handle sliding mechanics
	if (isSliding) {
		slideTimer--;
		// Apply sliding movement with tween for smooth effect
		var slideAmount = slideDirection * 8;
		playerCar.x += slideAmount;
		// Constrain car to stay within road bounds
		playerCar.x = Math.max(lanes[0] - 100, Math.min(lanes[2] + 100, playerCar.x));
		// Add visual sliding effect
		tween(playerCar, {
			rotation: slideDirection * 0.3
		}, {
			duration: 100,
			easing: tween.easeOut
		});
		if (slideTimer <= 0) {
			isSliding = false;
			slideDirection = 0;
			// Return car to normal rotation
			tween(playerCar, {
				rotation: 0
			}, {
				duration: 500,
				easing: tween.easeOut
			});
			// Snap back to nearest lane
			var closestLane = 1;
			var minDistance = Math.abs(playerCar.x - lanes[1]);
			for (var i = 0; i < lanes.length; i++) {
				var distance = Math.abs(playerCar.x - lanes[i]);
				if (distance < minDistance) {
					minDistance = distance;
					closestLane = i;
				}
			}
			playerCar.lane = closestLane;
			playerCar.targetX = lanes[closestLane];
		}
	} else {
		// Normal smooth car movement to target lane
		var moveSpeed = 15;
		if (Math.abs(playerCar.x - playerCar.targetX) > moveSpeed) {
			if (playerCar.x < playerCar.targetX) {
				playerCar.x += moveSpeed;
			} else {
				playerCar.x -= moveSpeed;
			}
		} else {
			playerCar.x = playerCar.targetX;
		}
	}
	// Increase game speed over time
	gameSpeed += 0.002;
	// Player car accelerates 3 units per second (3/60 = 0.05 per frame at 60fps)
	playerCar.speed += 0.05;
	// Calculate base boost from speed boost power-up only
	var targetBoost = 1.0;
	if (hasSpeedBoost) {
		targetBoost *= 1.5; // Additional 50% speed from power-up
	}
	// Apply boost with smooth transition
	if (boostMultiplier < targetBoost) {
		// Smoothly increase speed
		tween(this, {
			boostMultiplier: targetBoost
		}, {
			duration: 1000,
			easing: tween.easeOut
		});
	} else if (boostMultiplier > targetBoost) {
		// Smoothly decrease speed
		tween(this, {
			boostMultiplier: targetBoost
		}, {
			duration: 500,
			easing: tween.easeOut
		});
	}
	// Limit effective speed to prevent exceeding 150 km/h
	var maxEffectiveSpeed = 15; // 15 * 10 = 150 km/h display limit
	var effectiveSpeed = Math.min(gameSpeed * boostMultiplier, maxEffectiveSpeed);
	var speedLimitRatio = effectiveSpeed / (gameSpeed * boostMultiplier);
	// Update distance score
	distanceScore += effectiveSpeed * 0.1;
	distanceTxt.setText('Distance: ' + Math.floor(distanceScore) + 'm');
	// Update speedometer display
	var currentSpeed = Math.floor(gameSpeed * boostMultiplier * 10); // Convert to km/h scale
	// Limit maximum displayed speed to 150 km/h
	currentSpeed = Math.min(currentSpeed, 150);
	speedometerTxt.setText('Speed: ' + currentSpeed + ' km/h');
	// Spawn road lines
	roadLineSpawnTimer++;
	if (roadLineSpawnTimer >= 20) {
		roadLineSpawnTimer = 0;
		for (var i = 0; i < 2; i++) {
			var roadLine = new RoadLine();
			roadLine.x = lanes[0] + i * (lanes[2] - lanes[0]);
			roadLine.y = -50;
			roadLine.speed = effectiveSpeed;
			roadLines.push(roadLine);
			game.addChild(roadLine);
		}
	}
	// Spawn enemy cars
	spawnTimer++;
	// Increase spawn rate based on score and distance
	var spawnRateBonus = Math.floor(LK.getScore() / 100) + Math.floor(distanceScore / 1000);
	var baseSpawnRate = Math.max(20, 90 - Math.floor(gameSpeed) - spawnRateBonus);
	if (spawnTimer >= baseSpawnRate) {
		spawnTimer = 0;
		var enemyCar = new EnemyCar();
		var randomLane = Math.floor(Math.random() * 3);
		enemyCar.x = lanes[randomLane];
		enemyCar.y = -100;
		enemyCar.speed = (gameSpeed + Math.random() * 3) * boostMultiplier;
		enemyCar.lastY = enemyCar.y;
		enemyCar.lastIntersecting = enemyCar.intersects(playerCar);
		enemyCars.push(enemyCar);
		game.addChild(enemyCar);
	}
	// Spawn trees
	treeSpawnTimer++;
	if (treeSpawnTimer >= 60) {
		treeSpawnTimer = 0;
		// Spawn trees on left side
		if (Math.random() < 0.8) {
			var leftTree = new Tree();
			leftTree.x = Math.random() * (lanes[0] - 100); // Random position on left side
			leftTree.y = -100;
			leftTree.speed = effectiveSpeed;
			trees.push(leftTree);
			game.addChild(leftTree);
		}
		// Spawn trees on right side
		if (Math.random() < 0.8) {
			var rightTree = new Tree();
			rightTree.x = lanes[2] + 100 + Math.random() * (2048 - lanes[2] - 200); // Random position on right side
			rightTree.y = -100;
			rightTree.speed = effectiveSpeed;
			trees.push(rightTree);
			game.addChild(rightTree);
		}
	}
	// Spawn bushes
	bushSpawnTimer++;
	if (bushSpawnTimer >= 40) {
		bushSpawnTimer = 0;
		// Spawn bushes on left side between trees
		if (Math.random() < 0.6) {
			var leftBush = new Bush();
			leftBush.x = Math.random() * (lanes[0] - 50); // Random position on left side
			leftBush.y = -50;
			leftBush.speed = effectiveSpeed;
			bushes.push(leftBush);
			game.addChild(leftBush);
		}
		// Spawn bushes on right side between trees
		if (Math.random() < 0.6) {
			var rightBush = new Bush();
			rightBush.x = lanes[2] + 50 + Math.random() * (2048 - lanes[2] - 150); // Random position on right side
			rightBush.y = -50;
			rightBush.speed = effectiveSpeed;
			bushes.push(rightBush);
			game.addChild(rightBush);
		}
	}
	// Spawn coins
	coinSpawnTimer++;
	if (coinSpawnTimer >= 120) {
		coinSpawnTimer = 0;
		if (Math.random() < 0.7) {
			var coin = new Coin();
			var randomLane = Math.floor(Math.random() * 3);
			coin.x = lanes[randomLane];
			coin.y = -50;
			coin.speed = effectiveSpeed;
			coin.lastY = coin.y;
			coin.lastIntersecting = coin.intersects(playerCar);
			coins.push(coin);
			game.addChild(coin);
		}
	}
	// Spawn fuel tanks
	fuelTankSpawnTimer++;
	if (fuelTankSpawnTimer >= 150) {
		fuelTankSpawnTimer = 0;
		if (Math.random() < 0.7) {
			var fuelTank = new FuelTank();
			var randomLane = Math.floor(Math.random() * 3);
			fuelTank.x = lanes[randomLane];
			fuelTank.y = -50;
			fuelTank.speed = effectiveSpeed;
			fuelTank.lastY = fuelTank.y;
			fuelTank.lastIntersecting = fuelTank.intersects(playerCar);
			fuelTanks.push(fuelTank);
			game.addChild(fuelTank);
		}
	}
	// Spawn spilled fuel
	spilledFuelSpawnTimer++;
	if (spilledFuelSpawnTimer >= 200) {
		spilledFuelSpawnTimer = 0;
		if (Math.random() < 0.4) {
			var spilledFuel = new SpilledFuel();
			var randomLane = Math.floor(Math.random() * 3);
			spilledFuel.x = lanes[randomLane];
			spilledFuel.y = -50;
			spilledFuel.speed = effectiveSpeed;
			spilledFuel.lastY = spilledFuel.y;
			spilledFuel.lastIntersecting = spilledFuel.intersects(playerCar);
			spilledFuels.push(spilledFuel);
			game.addChild(spilledFuel);
		}
	}
	// Spawn spilled boxes
	spilledBoxSpawnTimer++;
	if (spilledBoxSpawnTimer >= 180) {
		spilledBoxSpawnTimer = 0;
		if (Math.random() < 0.5) {
			var spilledBox = new SpilledBox();
			var randomLane = Math.floor(Math.random() * 3);
			spilledBox.x = lanes[randomLane];
			spilledBox.y = -50;
			spilledBox.speed = effectiveSpeed;
			spilledBox.lastY = spilledBox.y;
			spilledBox.lastIntersecting = spilledBox.intersects(playerCar);
			spilledBoxes.push(spilledBox);
			game.addChild(spilledBox);
		}
	}
	// Spawn power-ups
	powerUpSpawnTimer++;
	if (powerUpSpawnTimer >= 300) {
		powerUpSpawnTimer = 0;
		if (Math.random() < 0.6) {
			var powerUp = new PowerUp();
			var randomLane = Math.floor(Math.random() * 3);
			powerUp.x = lanes[randomLane];
			powerUp.y = -50;
			powerUp.speed = effectiveSpeed;
			powerUp.lastY = powerUp.y;
			powerUp.lastIntersecting = powerUp.intersects(playerCar);
			powerUps.push(powerUp);
			game.addChild(powerUp);
		}
	}
	// Update and check road lines
	for (var i = roadLines.length - 1; i >= 0; i--) {
		var roadLine = roadLines[i];
		roadLine.speed = effectiveSpeed;
		if (roadLine.lastY === undefined) roadLine.lastY = roadLine.y;
		// Remove road lines that go off screen
		if (roadLine.lastY <= 2732 + 50 && roadLine.y > 2732 + 50) {
			roadLine.destroy();
			roadLines.splice(i, 1);
			continue;
		}
		roadLine.lastY = roadLine.y;
	}
	// Update and check enemy cars
	for (var i = enemyCars.length - 1; i >= 0; i--) {
		var enemyCar = enemyCars[i];
		// Increase enemy speed based on score and distance
		var speedBonus = Math.floor(LK.getScore() / 50) + Math.floor(distanceScore / 500);
		var enemyBaseSpeed = (gameSpeed + 2 + speedBonus) * boostMultiplier;
		enemyCar.speed = Math.min(enemyBaseSpeed, maxEffectiveSpeed + 2);
		// Remove cars that go off screen
		if (enemyCar.lastY <= 2732 + 100 && enemyCar.y > 2732 + 100) {
			enemyCar.destroy();
			enemyCars.splice(i, 1);
			continue;
		}
		// Check collision with player
		var currentIntersecting = enemyCar.intersects(playerCar);
		if (!enemyCar.lastIntersecting && currentIntersecting) {
			if (hasShield) {
				// Shield protects from collision
				hasShield = false;
				shieldTimer = 0;
				shieldTxt.setText('');
				playerCar.tint = 0xffffff; // Remove shield tint
				LK.effects.flashObject(playerCar, 0xffff00, 1000); // Yellow flash for shield break
				LK.effects.flashObject(enemyCar, 0xffff00, 500);
				// Push enemy car away
				enemyCar.y += 200;
			} else {
				// Collision detected - game over
				saveScore(LK.getScore());
				LK.getSound('crash').play();
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			}
		}
		enemyCar.lastY = enemyCar.y;
		enemyCar.lastIntersecting = currentIntersecting;
	}
	// Update and check trees
	for (var i = trees.length - 1; i >= 0; i--) {
		var tree = trees[i];
		tree.speed = effectiveSpeed;
		if (tree.lastY === undefined) tree.lastY = tree.y;
		// Remove trees that go off screen
		if (tree.lastY <= 2732 + 100 && tree.y > 2732 + 100) {
			tree.destroy();
			trees.splice(i, 1);
			continue;
		}
		tree.lastY = tree.y;
	}
	// Update and check bushes
	for (var i = bushes.length - 1; i >= 0; i--) {
		var bush = bushes[i];
		bush.speed = effectiveSpeed;
		if (bush.lastY === undefined) bush.lastY = bush.y;
		// Remove bushes that go off screen
		if (bush.lastY <= 2732 + 50 && bush.y > 2732 + 50) {
			bush.destroy();
			bushes.splice(i, 1);
			continue;
		}
		bush.lastY = bush.y;
	}
	// Update and check coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		coin.speed = effectiveSpeed;
		// Remove coins that go off screen
		if (coin.lastY <= 2732 + 50 && coin.y > 2732 + 50) {
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
		// Check collection by player
		var currentIntersecting = coin.intersects(playerCar);
		if (!coin.lastIntersecting && currentIntersecting) {
			// Coin collected
			lastCollectTime = Date.now();
			comboTimer = 300; // 5 seconds at 60fps
			var pointsEarned = 10 * comboMultiplier;
			LK.setScore(LK.getScore() + pointsEarned);
			comboMultiplier = Math.min(comboMultiplier + 1, 5); // Max combo x5
			scoreTxt.setText(LK.getScore().toString());
			LK.getSound('collectCoin').play();
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
		coin.lastY = coin.y;
		coin.lastIntersecting = currentIntersecting;
	}
	// Update fuel system
	currentFuel -= fuelConsumptionRate * boostMultiplier;
	if (currentFuel <= 0) {
		currentFuel = 0;
		// Game over due to no fuel
		saveScore(LK.getScore());
		LK.effects.flashScreen(0xff8800, 1000);
		LK.showGameOver();
		return;
	}
	// Update fuel display with color coding
	var fuelPercentage = Math.floor(currentFuel / maxFuel * 100);
	fuelTxt.setText('Fuel: ' + fuelPercentage + '%');
	if (fuelPercentage > 50) {
		fuelTxt.fill = 0x00FF00; // Green
	} else if (fuelPercentage > 25) {
		fuelTxt.fill = 0xFFFF00; // Yellow
	} else {
		fuelTxt.fill = 0xFF0000; // Red
	}
	// Update and check fuel tanks
	for (var i = fuelTanks.length - 1; i >= 0; i--) {
		var fuelTank = fuelTanks[i];
		fuelTank.speed = effectiveSpeed;
		// Remove fuel tanks that go off screen
		if (fuelTank.lastY <= 2732 + 50 && fuelTank.y > 2732 + 50) {
			fuelTank.destroy();
			fuelTanks.splice(i, 1);
			continue;
		}
		// Check collection by player
		var currentIntersecting = fuelTank.intersects(playerCar);
		if (!fuelTank.lastIntersecting && currentIntersecting) {
			// Fuel tank collected
			lastCollectTime = Date.now();
			comboTimer = 300; // 5 seconds at 60fps
			currentFuel = Math.min(currentFuel + 30, maxFuel);
			var pointsEarned = 5 * comboMultiplier;
			LK.setScore(LK.getScore() + pointsEarned);
			comboMultiplier = Math.min(comboMultiplier + 1, 5); // Max combo x5
			scoreTxt.setText(LK.getScore().toString());
			LK.getSound('collectCoin').play();
			fuelTank.destroy();
			fuelTanks.splice(i, 1);
			continue;
		}
		fuelTank.lastY = fuelTank.y;
		fuelTank.lastIntersecting = currentIntersecting;
	}
	// Update and check spilled fuel
	for (var i = spilledFuels.length - 1; i >= 0; i--) {
		var spilledFuel = spilledFuels[i];
		spilledFuel.speed = effectiveSpeed;
		// Remove spilled fuel that goes off screen
		if (spilledFuel.lastY <= 2732 + 50 && spilledFuel.y > 2732 + 50) {
			spilledFuel.destroy();
			spilledFuels.splice(i, 1);
			continue;
		}
		// Check collision with player
		var currentIntersecting = spilledFuel.intersects(playerCar);
		if (!spilledFuel.lastIntersecting && currentIntersecting && !isSliding) {
			// Spilled fuel collision - make car slide
			isSliding = true;
			slideDirection = (Math.random() - 0.5) * 2; // Random slide direction
			slideTimer = 90; // Slide for 1.5 seconds at 60fps
			// Visual effect for hitting spilled fuel
			LK.effects.flashObject(playerCar, 0x8B4513, 500);
			// Add spinning rotation effect
			tween(playerCar, {
				rotation: playerCar.rotation + Math.PI * 4 // Spin 2 full rotations
			}, {
				duration: 1500,
				easing: tween.easeOut
			});
		}
		spilledFuel.lastY = spilledFuel.y;
		spilledFuel.lastIntersecting = currentIntersecting;
	}
	// Update and check spilled boxes
	for (var i = spilledBoxes.length - 1; i >= 0; i--) {
		var spilledBox = spilledBoxes[i];
		spilledBox.speed = effectiveSpeed;
		// Remove spilled boxes that go off screen
		if (spilledBox.lastY <= 2732 + 50 && spilledBox.y > 2732 + 50) {
			spilledBox.destroy();
			spilledBoxes.splice(i, 1);
			continue;
		}
		// Check collision with player
		var currentIntersecting = spilledBox.intersects(playerCar);
		if (!spilledBox.lastIntersecting && currentIntersecting) {
			if (hasShield) {
				// Shield protects from collision
				hasShield = false;
				shieldTimer = 0;
				shieldTxt.setText('');
				playerCar.tint = 0xffffff; // Remove shield tint
				LK.effects.flashObject(playerCar, 0xffff00, 1000); // Yellow flash for shield break
				// Destroy the box
				spilledBox.destroy();
				spilledBoxes.splice(i, 1);
				continue;
			} else {
				// Spilled box collision - game over
				saveScore(LK.getScore());
				LK.getSound('crash').play();
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			}
		}
		spilledBox.lastY = spilledBox.y;
		spilledBox.lastIntersecting = currentIntersecting;
	}
	// Update and check power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		powerUp.speed = effectiveSpeed;
		// Remove power-ups that go off screen
		if (powerUp.lastY <= 2732 + 50 && powerUp.y > 2732 + 50) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		// Check collection by player
		var currentIntersecting = powerUp.intersects(playerCar);
		if (!powerUp.lastIntersecting && currentIntersecting) {
			// Power-up collected
			lastCollectTime = Date.now();
			comboTimer = 300; // 5 seconds at 60fps
			if (powerUp.powerType === 0) {
				// Speed boost power-up
				hasSpeedBoost = true;
				speedBoostTimer = 600; // 10 seconds at 60fps
				LK.effects.flashObject(playerCar, 0x0099ff, 500);
			} else {
				// Shield power-up
				hasShield = true;
				shieldTimer = 900; // 15 seconds at 60fps
				playerCar.tint = 0x9900ff; // Purple tint for shield
				LK.effects.flashObject(playerCar, 0x9900ff, 500);
			}
			var pointsEarned = 20 * comboMultiplier;
			LK.setScore(LK.getScore() + pointsEarned);
			comboMultiplier = Math.min(comboMultiplier + 1, 5); // Max combo x5
			scoreTxt.setText(LK.getScore().toString());
			LK.getSound('collectCoin').play();
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		powerUp.lastY = powerUp.y;
		powerUp.lastIntersecting = currentIntersecting;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -624,8 +624,10 @@
 		}
 	}
 	// Increase game speed over time
 	gameSpeed += 0.002;
+	// Player car accelerates 3 units per second (3/60 = 0.05 per frame at 60fps)
+	playerCar.speed += 0.05;
 	// Calculate base boost from speed boost power-up only
 	var targetBoost = 1.0;
 	if (hasSpeedBoost) {
 		targetBoost *= 1.5; // Additional 50% speed from power-up