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

/**** 
* Classes
****/ 
var Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.targetLane = 1; // 0 = left, 1 = middle, 2 = right
	self.currentLane = 1;
	self.invincible = false;
	self.invincibilityTimer = 0;
	self.slowEffect = false;
	self.slowTimer = 0;
	self.shrinkObstacles = false;
	self.shrinkTimer = 0;
	self.update = function () {
		// Smooth lane transitions
		var targetX = getLaneX(self.targetLane);
		if (Math.abs(self.x - targetX) > 5) {
			self.x += (targetX - self.x) * 0.2;
		} else {
			self.x = targetX;
			self.currentLane = self.targetLane;
		}
		// Handle invincibility
		if (self.invincible) {
			self.invincibilityTimer--;
			carGraphics.alpha = self.invincibilityTimer % 10 < 5 ? 0.3 : 1.0;
			carGraphics.tint = 0x00ffff;
			if (self.invincibilityTimer <= 0) {
				self.invincible = false;
				carGraphics.alpha = 1.0;
				carGraphics.tint = 0xffffff;
			}
		}
		// Handle slow effect
		if (self.slowEffect) {
			self.slowTimer--;
			if (self.slowTimer <= 0) {
				self.slowEffect = false;
			}
		}
		// Handle shrink obstacles effect
		if (self.shrinkObstacles) {
			self.shrinkTimer--;
			if (self.shrinkTimer <= 0) {
				self.shrinkObstacles = false;
			}
		}
	};
	return self;
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.glowTimer = 0;
	self.update = function () {
		self.y += gameSpeed;
		// Glowing effect
		self.glowTimer++;
		var scale = 1.0 + Math.sin(self.glowTimer * 0.2) * 0.2;
		coinGraphics.scaleX = scale;
		coinGraphics.scaleY = scale;
		// Rotation effect
		coinGraphics.rotation += 0.1;
	};
	return self;
});
var LavaBackground = Container.expand(function () {
	var self = Container.call(this);
	var lavaGraphics = self.attachAsset('lavaBackground', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.pulseTimer = Math.random() * 100;
	self.update = function () {
		self.y += gameSpeed * 0.3;
		// Enhanced pulsing dark lava effect with multiple layers
		self.pulseTimer++;
		var pulse = 1.0 + Math.sin(self.pulseTimer * 0.05) * 0.15;
		var secondaryPulse = 1.0 + Math.sin(self.pulseTimer * 0.08) * 0.08;
		lavaGraphics.scaleY = pulse * secondaryPulse;
		lavaGraphics.scaleX = 1.0 + Math.sin(self.pulseTimer * 0.04) * 0.05;
		// Enhanced color shifting for more realistic lava
		var colorShift = Math.sin(self.pulseTimer * 0.03) * 0.3;
		var redIntensity = Math.sin(self.pulseTimer * 0.02) * 0.2;
		var baseColor = 0x1a0000;
		var redComponent = Math.floor((0.1 + colorShift + redIntensity) * 255);
		var greenComponent = Math.floor(Math.sin(self.pulseTimer * 0.025) * 0.1 * 255);
		lavaGraphics.tint = (redComponent << 16) + (greenComponent << 8);
		// Slight rotation for flowing effect
		lavaGraphics.rotation = Math.sin(self.pulseTimer * 0.01) * 0.02;
		// Reset position when off screen
		if (self.y > 2732 + 150) {
			self.y = -150;
		}
	};
	return self;
});
var LavaStream = Container.expand(function () {
	var self = Container.call(this);
	var streamGraphics = self.attachAsset('lavaStream', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.flowTimer = Math.random() * 200;
	self.update = function () {
		self.y += gameSpeed * 0.5;
		// Enhanced flowing lava effect with realistic motion
		self.flowTimer++;
		var flow = Math.sin(self.flowTimer * 0.08) * 0.08;
		var crossFlow = Math.sin(self.flowTimer * 0.06) * 0.03;
		streamGraphics.rotation = flow;
		streamGraphics.skewX = crossFlow;
		// Multi-layered intensity variation
		var intensity = 1.0 + Math.sin(self.flowTimer * 0.06) * 0.4;
		var secondaryIntensity = 1.0 + Math.sin(self.flowTimer * 0.09) * 0.2;
		streamGraphics.alpha = 0.3 + intensity * secondaryIntensity * 0.25;
		// Scale variation for bubbling effect
		var scaleVar = 1.0 + Math.sin(self.flowTimer * 0.07) * 0.1;
		streamGraphics.scaleX = scaleVar;
		// Color variation for hot lava
		var heatShift = Math.sin(self.flowTimer * 0.05) * 0.3;
		var redHeat = Math.floor((0.2 + heatShift) * 255);
		streamGraphics.tint = (redHeat << 16) + (Math.floor(heatShift * 0.5 * 255) << 8);
		// Reset position when off screen
		if (self.y > 2732 + 200) {
			self.y = -200;
		}
	};
	return self;
});
var Obstacle = Container.expand(function (type) {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = type;
	self.shrunk = false;
	self.update = function () {
		self.y += car.slowEffect ? gameSpeed * 0.5 : gameSpeed;
		// Apply shrink effect if active
		if (car.shrinkObstacles && !self.shrunk) {
			self.shrunk = true;
			tween(obstacleGraphics, {
				scaleX: 0.5,
				scaleY: 0.5
			}, {
				duration: 300
			});
		} else if (!car.shrinkObstacles && self.shrunk) {
			self.shrunk = false;
			tween(obstacleGraphics, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 300
			});
		}
		// Animated effects for different obstacles
		if (self.type === 'demon') {
			obstacleGraphics.rotation += 0.05;
		} else if (self.type === 'demonWing') {
			var flap = Math.sin(LK.ticks * 0.3) * 0.3;
			obstacleGraphics.scaleY = (self.shrunk ? 0.5 : 1.0) + flap;
		} else if (self.type === 'firePit') {
			var flicker = 1.0 + Math.sin(LK.ticks * 0.4) * 0.15;
			var scale = self.shrunk ? 0.5 : 1.0;
			obstacleGraphics.scaleX = scale * flicker;
			obstacleGraphics.scaleY = scale * flicker;
			// Add intense flickering effect with tween
			if (LK.ticks % 120 === 0) {
				tween(obstacleGraphics, {
					alpha: 0.6
				}, {
					duration: 150,
					onFinish: function onFinish() {
						tween(obstacleGraphics, {
							alpha: 1.0
						}, {
							duration: 150
						});
					}
				});
			}
			// Color shifting for fire effect
			var heatColor = Math.sin(LK.ticks * 0.3) * 0.3;
			var redIntensity = Math.floor((0.8 + heatColor) * 255);
			var yellowIntensity = Math.floor(heatColor * 0.6 * 255);
			obstacleGraphics.tint = (redIntensity << 16) + (yellowIntensity << 8);
		} else if (self.type === 'skull') {
			// Add haunting motion to skeleton/skull
			var sway = Math.sin(LK.ticks * 0.1) * 0.03;
			var bob = Math.sin(LK.ticks * 0.15) * 0.02;
			obstacleGraphics.rotation = sway;
			obstacleGraphics.skewY = bob;
			// Periodic ghostly fade effect
			if (LK.ticks % 180 === 0) {
				tween(obstacleGraphics, {
					alpha: 0.7
				}, {
					duration: 300,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(obstacleGraphics, {
							alpha: 1.0
						}, {
							duration: 300,
							easing: tween.easeInOut
						});
					}
				});
			}
			// Slight scale breathing effect
			var breathe = 1.0 + Math.sin(LK.ticks * 0.08) * 0.05;
			var currentScale = self.shrunk ? 0.5 : 1.0;
			obstacleGraphics.scaleX = currentScale * breathe;
			obstacleGraphics.scaleY = currentScale * breathe;
		}
	};
	return self;
});
var PowerUp = Container.expand(function (type) {
	var self = Container.call(this);
	var assetName = type + 'PowerUp';
	var powerUpGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = type;
	self.collected = false;
	self.update = function () {
		self.y += gameSpeed;
		// Spinning effect
		powerUpGraphics.rotation += 0.1;
		// Pulsing effect
		var pulse = 1.2 + Math.sin(LK.ticks * 0.2) * 0.3;
		powerUpGraphics.scaleX = pulse;
		powerUpGraphics.scaleY = pulse;
	};
	return self;
});
var Road = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('road', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.y += gameSpeed;
		// Reset position when off screen
		if (self.y > 2732 + 75) {
			self.y = -75;
		}
	};
	return self;
});
var SideObstacle = Container.expand(function (side, type) {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.side = side; // 'left' or 'right'
	self.type = type;
	self.speedX = side === 'left' ? 6 : -6;
	self.startX = side === 'left' ? -100 : 2148;
	self.targetX = side === 'left' ? 600 : 1448;
	self.x = self.startX;
	self.active = false;
	self.update = function () {
		self.y += gameSpeed * 0.8;
		if (!self.active && self.x !== self.targetX) {
			self.x += self.speedX;
			if (self.side === 'left' && self.x >= self.targetX || self.side === 'right' && self.x <= self.targetX) {
				self.x = self.targetX;
				self.active = true;
				// Add tween animation when reaching target
				tween(obstacleGraphics, {
					scaleX: 1.2,
					scaleY: 1.2
				}, {
					duration: 400,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(obstacleGraphics, {
							scaleX: 1.0,
							scaleY: 1.0
						}, {
							duration: 400,
							easing: tween.easeInOut
						});
					}
				});
			}
		}
		// Add type-specific animations
		if (self.type === 'demon') {
			obstacleGraphics.rotation += 0.03;
		} else if (self.type === 'firePit') {
			var flicker = 1.0 + Math.sin(LK.ticks * 0.5) * 0.1;
			obstacleGraphics.scaleX *= flicker;
			obstacleGraphics.scaleY *= flicker;
		}
	};
	return self;
});
var Wall = Container.expand(function (side) {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.side = side; // 'left' or 'right'
	self.update = function () {
		self.y += gameSpeed;
		// Reset position when off screen
		if (self.y > 2732 + 50) {
			self.y = -50;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Game variables
var gameSpeed = 8;
var baseSpeed = 8;
var car;
var coins = [];
var obstacles = [];
var powerUps = [];
var roads = [];
var walls = [];
var sideObstacles = [];
var lavaBackgrounds = [];
var lavaStreams = [];
var backgroundColorPhase = 0; // 0=red, 1=purple, 2=black
var difficultyTimer = 0;
var devilEventTimer = 0;
var shakeTimer = 0;
var spawnTimer = 0;
var powerUpSpawnTimer = 0;
var sideObstacleSpawnTimer = 0;
// Lane obstacle tracking to prevent overcrowding
var laneObstacleCounts = [0, 0, 0]; // Track obstacles per lane
// Bonus system variables
var scoreMultiplier = 1;
var multiplierTimer = 0;
var comboCount = 0;
var comboTimer = 0;
var lastCollectTime = 0;
var bonusEventTimer = 0;
// Lane positions for vertical game (horizontal lanes)
var lanes = [2048 * 0.2, 2048 * 0.5, 2048 * 0.8];
function getLaneX(laneIndex) {
	return lanes[laneIndex];
}
function getRandomLane() {
	return Math.floor(Math.random() * 3);
}
function updateLaneObstacleCounts() {
	// Reset counts
	laneObstacleCounts = [0, 0, 0];
	// Count obstacles in each lane
	for (var i = 0; i < obstacles.length; i++) {
		var obstacle = obstacles[i];
		var laneIndex = Math.round((obstacle.x - lanes[0]) / (lanes[1] - lanes[0]));
		if (laneIndex >= 0 && laneIndex < 3) {
			laneObstacleCounts[laneIndex]++;
		}
	}
}
function getAvailableLane() {
	updateLaneObstacleCounts();
	var availableLanes = [];
	// Find lanes with no obstacles to ensure at least one lane is always clear
	for (var i = 0; i < 3; i++) {
		if (laneObstacleCounts[i] === 0) {
			availableLanes.push(i);
		}
	}
	// If no completely clear lanes, find lanes with fewer obstacles
	if (availableLanes.length === 0) {
		var minObstacles = Math.min.apply(Math, laneObstacleCounts);
		for (var i = 0; i < 3; i++) {
			if (laneObstacleCounts[i] === minObstacles) {
				availableLanes.push(i);
			}
		}
	}
	// Return random available lane
	return availableLanes[Math.floor(Math.random() * availableLanes.length)];
}
function calculateBonus(basePoints) {
	var bonus = basePoints * scoreMultiplier;
	// Combo bonus
	if (comboCount > 1) {
		bonus += comboCount * 5;
	}
	// Speed bonus - higher speed gives more points
	var speedBonus = Math.floor((gameSpeed - baseSpeed) * 2);
	bonus += speedBonus;
	return Math.floor(bonus);
}
function updateCombo() {
	var currentTime = LK.ticks;
	// Check if within combo window (2 seconds)
	if (currentTime - lastCollectTime < 120) {
		comboCount++;
		comboTimer = 180; // Show combo for 3 seconds
	} else {
		comboCount = 1;
		comboTimer = 180;
	}
	lastCollectTime = currentTime;
	// Update combo display
	if (comboCount > 1) {
		comboTxt.setText('COMBO x' + comboCount + '!');
		tween(comboTxt, {
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 200,
			onComplete: function onComplete() {
				tween(comboTxt, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 200
				});
			}
		});
	}
}
function triggerBonusEvent() {
	// Random bonus events
	var eventType = Math.floor(Math.random() * 3);
	if (eventType === 0) {
		// Score multiplier boost
		scoreMultiplier = Math.min(scoreMultiplier + 1, 5);
		multiplierTimer = 600; // 10 seconds
		LK.effects.flashScreen(0xffff00, 300);
	} else if (eventType === 1) {
		// Instant score bonus
		var bonus = calculateBonus(100);
		LK.setScore(LK.getScore() + bonus);
		scoreTxt.setText('Score: ' + LK.getScore());
		LK.effects.flashScreen(0x00ff00, 300);
	} else {
		// Combo extension
		comboTimer += 300; // Extra 5 seconds
		LK.effects.flashScreen(0xff6600, 300);
	}
}
// 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 multiplier display
var multiplierTxt = new Text2('x1', {
	size: 60,
	fill: 0xffff00
});
multiplierTxt.anchor.set(1, 0);
multiplierTxt.x = -20;
multiplierTxt.y = 100;
LK.gui.topRight.addChild(multiplierTxt);
// Create combo display
var comboTxt = new Text2('', {
	size: 50,
	fill: 0xff6600
});
comboTxt.anchor.set(0.5, 0);
comboTxt.y = 120;
LK.gui.top.addChild(comboTxt);
// Create road segments
for (var i = 0; i < 3; i++) {
	var road = new Road();
	road.x = 2048 / 2;
	road.y = i * 150 - 75;
	roads.push(road);
	game.addChild(road);
}
// Create lava backgrounds
for (var i = 0; i < 12; i++) {
	var lavaBg = new LavaBackground();
	lavaBg.x = 2048 / 2;
	lavaBg.y = i * 250 - 300;
	lavaBackgrounds.push(lavaBg);
	game.addChild(lavaBg);
}
// Create lava streams
for (var i = 0; i < 6; i++) {
	var lavaStream = new LavaStream();
	lavaStream.x = 200 + i * 300;
	lavaStream.y = 2732 / 2;
	lavaStreams.push(lavaStream);
	game.addChild(lavaStream);
}
// Create walls
var leftWall = new Wall('left');
leftWall.x = 100;
leftWall.y = 2732 / 2;
walls.push(leftWall);
game.addChild(leftWall);
var rightWall = new Wall('right');
rightWall.x = 2048 - 100;
rightWall.y = 2732 / 2;
walls.push(rightWall);
game.addChild(rightWall);
// Create car
car = game.addChild(new Car());
car.x = getLaneX(1);
car.y = 2732 - 200;
// Touch controls
game.down = function (x, y, obj) {
	if (x < 2048 / 3) {
		// Left third - move left
		if (car.targetLane > 0) {
			car.targetLane--;
		}
	} else if (x > 2048 * 2 / 3) {
		// Right third - move right
		if (car.targetLane < 2) {
			car.targetLane++;
		}
	}
};
function spawnCoin() {
	var coin = new Coin();
	coin.x = getLaneX(getRandomLane());
	coin.y = -50;
	coins.push(coin);
	game.addChild(coin);
}
function spawnObstacle() {
	// Check if we can spawn while ensuring one lane stays clear
	updateLaneObstacleCounts();
	// Count how many lanes have obstacles
	var lanesWithObstacles = 0;
	for (var i = 0; i < 3; i++) {
		if (laneObstacleCounts[i] > 0) {
			lanesWithObstacles++;
		}
	}
	// Don't spawn if 2 lanes already have obstacles (keep at least one lane clear)
	if (lanesWithObstacles >= 2) {
		return;
	}
	var types = ['demon', 'firePit', 'lavaRock', 'skull', 'demonWing'];
	var type = types[Math.floor(Math.random() * types.length)];
	var obstacle = new Obstacle(type);
	obstacle.x = getLaneX(getAvailableLane());
	obstacle.y = -100;
	obstacles.push(obstacle);
	game.addChild(obstacle);
}
function spawnPowerUp() {
	var types = ['invisibility', 'slow', 'shrink'];
	var type = types[Math.floor(Math.random() * types.length)];
	var powerUp = new PowerUp(type);
	powerUp.x = getLaneX(getRandomLane());
	powerUp.y = -75;
	powerUps.push(powerUp);
	game.addChild(powerUp);
}
function spawnSideObstacle() {
	var types = ['demon', 'firePit', 'lavaRock', 'skull'];
	var type = types[Math.floor(Math.random() * types.length)];
	var side = Math.random() < 0.5 ? 'left' : 'right';
	var sideObstacle = new SideObstacle(side, type);
	sideObstacle.y = -100;
	sideObstacles.push(sideObstacle);
	game.addChild(sideObstacle);
}
function updateBackground() {
	var score = LK.getScore();
	// Change background based on score - darker lava theme
	if (score > 100 && backgroundColorPhase === 0) {
		backgroundColorPhase = 1;
		tween(game, {
			backgroundColor: 0x220000
		}, {
			duration: 2000
		});
	} else if (score > 250 && backgroundColorPhase === 1) {
		backgroundColorPhase = 2;
		tween(game, {
			backgroundColor: 0x000000
		}, {
			duration: 2000
		});
	}
}
function triggerDevilEvent() {
	// Screen shake effect
	shakeTimer = 180; // 3 seconds at 60fps
	// Flash screen red briefly
	LK.effects.flashScreen(0xff0000, 500);
}
game.update = function () {
	// Apply screen shake
	if (shakeTimer > 0) {
		shakeTimer--;
		var shakeX = (Math.random() - 0.5) * 20;
		var shakeY = (Math.random() - 0.5) * 20;
		game.x = shakeX;
		game.y = shakeY;
	} else {
		game.x = 0;
		game.y = 0;
	}
	// Increase difficulty over time
	difficultyTimer++;
	if (difficultyTimer % 600 === 0) {
		// Every 10 seconds
		gameSpeed += 0.5;
		if (gameSpeed > baseSpeed * 2.5) {
			gameSpeed = baseSpeed * 2.5; // Cap speed
		}
	}
	// Increase speed every 100 points
	var currentSpeedLevel = Math.floor(LK.getScore() / 100);
	var expectedSpeed = baseSpeed + currentSpeedLevel * 2;
	if (expectedSpeed > gameSpeed && expectedSpeed <= baseSpeed * 3) {
		gameSpeed = expectedSpeed;
		// Visual feedback for speed increase
		LK.effects.flashScreen(0xffaa00, 400);
	}
	// Devil event timer
	devilEventTimer++;
	if (devilEventTimer > 1800 + Math.random() * 1800) {
		// 30-60 seconds
		triggerDevilEvent();
		devilEventTimer = 0;
	}
	// Spawn objects
	spawnTimer++;
	powerUpSpawnTimer++;
	sideObstacleSpawnTimer++;
	// Spawn coins
	if (spawnTimer > 60 - Math.min(40, LK.getScore() / 10)) {
		if (Math.random() < 0.7) {
			spawnCoin();
		}
		spawnTimer = 0;
	}
	// Spawn obstacles with increased difficulty every 250 points
	var difficultyLevel = Math.floor(LK.getScore() / 250);
	var baseSpawnRate = 0.02 + LK.getScore() * 0.0001;
	var hardDifficultyBonus = difficultyLevel * 0.01; // Extra spawn chance every 250 points
	if (Math.random() < baseSpawnRate + hardDifficultyBonus) {
		spawnObstacle();
	}
	// Spawn power-ups occasionally
	if (powerUpSpawnTimer > 600 && Math.random() < 0.15) {
		// Every 10+ seconds, 15% chance - increased frequency for escape availability
		spawnPowerUp();
		powerUpSpawnTimer = 0;
	}
	// Spawn side obstacles
	if (sideObstacleSpawnTimer > 300 && Math.random() < 0.25) {
		// Every 5+ seconds, 25% chance
		spawnSideObstacle();
		sideObstacleSpawnTimer = 0;
	}
	// Update coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		if (coin.y > 2732 + 100) {
			coin.destroy();
			coins.splice(i, 1);
			continue;
		}
		// Check collision with car
		if (!coin.collected && car.intersects(coin)) {
			coin.collected = true;
			var bonus = calculateBonus(10);
			LK.setScore(LK.getScore() + bonus);
			scoreTxt.setText('Score: ' + LK.getScore());
			updateCombo();
			LK.getSound('collect').play();
			coin.destroy();
			coins.splice(i, 1);
		}
	}
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		if (obstacle.y > 2732 + 150) {
			obstacle.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Check collision with car
		if (!car.invincible && car.currentLane === Math.round((obstacle.x - lanes[0]) / (lanes[1] - lanes[0])) && car.intersects(obstacle)) {
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Update power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		if (powerUp.y > 2732 + 100) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		// Check collision with car
		if (!powerUp.collected && car.intersects(powerUp)) {
			powerUp.collected = true;
			if (powerUp.type === 'invisibility') {
				car.invincible = true;
				car.invincibilityTimer = 300; // 5 seconds
				scoreMultiplier += 1;
				multiplierTimer = 300; // 5 seconds
			} else if (powerUp.type === 'slow') {
				car.slowEffect = true;
				car.slowTimer = 360; // 6 seconds
				var bonus = calculateBonus(25);
				LK.setScore(LK.getScore() + bonus);
				scoreTxt.setText('Score: ' + LK.getScore());
			} else if (powerUp.type === 'shrink') {
				car.shrinkObstacles = true;
				car.shrinkTimer = 480; // 8 seconds
				var bonus = calculateBonus(30);
				LK.setScore(LK.getScore() + bonus);
				scoreTxt.setText('Score: ' + LK.getScore());
			}
			updateCombo();
			LK.getSound('collect').play();
			powerUp.destroy();
			powerUps.splice(i, 1);
		}
	}
	// Update side obstacles
	for (var i = sideObstacles.length - 1; i >= 0; i--) {
		var sideObstacle = sideObstacles[i];
		if (sideObstacle.y > 2732 + 150) {
			sideObstacle.destroy();
			sideObstacles.splice(i, 1);
			continue;
		}
		// Check collision with car
		if (!car.invincible && car.intersects(sideObstacle)) {
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Update background color progression
	updateBackground();
	// Update bonus system timers
	if (multiplierTimer > 0) {
		multiplierTimer--;
		if (multiplierTimer <= 0) {
			scoreMultiplier = Math.max(1, scoreMultiplier - 1);
		}
	}
	if (comboTimer > 0) {
		comboTimer--;
		if (comboTimer <= 0) {
			comboCount = 0;
			comboTxt.setText('');
		}
	}
	// Update displays
	multiplierTxt.setText('x' + scoreMultiplier);
	if (scoreMultiplier > 1) {
		multiplierTxt.fill = 0x00ff00;
	} else {
		multiplierTxt.fill = 0xffff00;
	}
	// Bonus events
	bonusEventTimer++;
	if (bonusEventTimer > 1200 + Math.random() * 600) {
		// 20-30 seconds
		if (Math.random() < 0.3) {
			// 30% chance
			triggerBonusEvent();
		}
		bonusEventTimer = 0;
	}
	// Add score over time with multiplier
	if (LK.ticks % 30 === 0) {
		var timeBonus = calculateBonus(1);
		LK.setScore(LK.getScore() + timeBonus);
		scoreTxt.setText('Score: ' + LK.getScore());
	}
};
// Start background music
LK.playMusic('hellMusic');

===================================================================
--- original.js
+++ change.js
@@ -266,8 +266,58 @@
 		}
 	};
 	return self;
 });
+var SideObstacle = Container.expand(function (side, type) {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset(type, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.side = side; // 'left' or 'right'
+	self.type = type;
+	self.speedX = side === 'left' ? 6 : -6;
+	self.startX = side === 'left' ? -100 : 2148;
+	self.targetX = side === 'left' ? 600 : 1448;
+	self.x = self.startX;
+	self.active = false;
+	self.update = function () {
+		self.y += gameSpeed * 0.8;
+		if (!self.active && self.x !== self.targetX) {
+			self.x += self.speedX;
+			if (self.side === 'left' && self.x >= self.targetX || self.side === 'right' && self.x <= self.targetX) {
+				self.x = self.targetX;
+				self.active = true;
+				// Add tween animation when reaching target
+				tween(obstacleGraphics, {
+					scaleX: 1.2,
+					scaleY: 1.2
+				}, {
+					duration: 400,
+					easing: tween.easeInOut,
+					onFinish: function onFinish() {
+						tween(obstacleGraphics, {
+							scaleX: 1.0,
+							scaleY: 1.0
+						}, {
+							duration: 400,
+							easing: tween.easeInOut
+						});
+					}
+				});
+			}
+		}
+		// Add type-specific animations
+		if (self.type === 'demon') {
+			obstacleGraphics.rotation += 0.03;
+		} else if (self.type === 'firePit') {
+			var flicker = 1.0 + Math.sin(LK.ticks * 0.5) * 0.1;
+			obstacleGraphics.scaleX *= flicker;
+			obstacleGraphics.scaleY *= flicker;
+		}
+	};
+	return self;
+});
 var Wall = Container.expand(function (side) {
 	var self = Container.call(this);
 	var wallGraphics = self.attachAsset('wall', {
 		anchorX: 0.5,
@@ -302,16 +352,18 @@
 var obstacles = [];
 var powerUps = [];
 var roads = [];
 var walls = [];
+var sideObstacles = [];
 var lavaBackgrounds = [];
 var lavaStreams = [];
 var backgroundColorPhase = 0; // 0=red, 1=purple, 2=black
 var difficultyTimer = 0;
 var devilEventTimer = 0;
 var shakeTimer = 0;
 var spawnTimer = 0;
 var powerUpSpawnTimer = 0;
+var sideObstacleSpawnTimer = 0;
 // Lane obstacle tracking to prevent overcrowding
 var laneObstacleCounts = [0, 0, 0]; // Track obstacles per lane
 // Bonus system variables
 var scoreMultiplier = 1;
@@ -536,8 +588,17 @@
 	powerUp.y = -75;
 	powerUps.push(powerUp);
 	game.addChild(powerUp);
 }
+function spawnSideObstacle() {
+	var types = ['demon', 'firePit', 'lavaRock', 'skull'];
+	var type = types[Math.floor(Math.random() * types.length)];
+	var side = Math.random() < 0.5 ? 'left' : 'right';
+	var sideObstacle = new SideObstacle(side, type);
+	sideObstacle.y = -100;
+	sideObstacles.push(sideObstacle);
+	game.addChild(sideObstacle);
+}
 function updateBackground() {
 	var score = LK.getScore();
 	// Change background based on score - darker lava theme
 	if (score > 100 && backgroundColorPhase === 0) {
@@ -600,8 +661,9 @@
 	}
 	// Spawn objects
 	spawnTimer++;
 	powerUpSpawnTimer++;
+	sideObstacleSpawnTimer++;
 	// Spawn coins
 	if (spawnTimer > 60 - Math.min(40, LK.getScore() / 10)) {
 		if (Math.random() < 0.7) {
 			spawnCoin();
@@ -620,8 +682,14 @@
 		// Every 10+ seconds, 15% chance - increased frequency for escape availability
 		spawnPowerUp();
 		powerUpSpawnTimer = 0;
 	}
+	// Spawn side obstacles
+	if (sideObstacleSpawnTimer > 300 && Math.random() < 0.25) {
+		// Every 5+ seconds, 25% chance
+		spawnSideObstacle();
+		sideObstacleSpawnTimer = 0;
+	}
 	// Update coins
 	for (var i = coins.length - 1; i >= 0; i--) {
 		var coin = coins[i];
 		if (coin.y > 2732 + 100) {
@@ -691,8 +759,24 @@
 			powerUp.destroy();
 			powerUps.splice(i, 1);
 		}
 	}
+	// Update side obstacles
+	for (var i = sideObstacles.length - 1; i >= 0; i--) {
+		var sideObstacle = sideObstacles[i];
+		if (sideObstacle.y > 2732 + 150) {
+			sideObstacle.destroy();
+			sideObstacles.splice(i, 1);
+			continue;
+		}
+		// Check collision with car
+		if (!car.invincible && car.intersects(sideObstacle)) {
+			LK.getSound('crash').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
 	// Update background color progression
 	updateBackground();
 	// Update bonus system timers
 	if (multiplierTimer > 0) {