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

/**** 
* Classes
****/ 
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.rotationSpeed = 0.1;
	self.update = function () {
		self.y += self.speed;
		self.rotation += self.rotationSpeed;
	};
	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 = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lane = 1; // 0 = left, 1 = center, 2 = right
	self.targetX = 0;
	self.moveSpeed = 12;
	self.update = function () {
		// Smooth lane changing
		if (Math.abs(self.x - self.targetX) > 5) {
			if (self.x < self.targetX) {
				self.x += self.moveSpeed;
			} else {
				self.x -= self.moveSpeed;
			}
		} else {
			self.x = self.targetX;
		}
	};
	self.changeLane = function (direction) {
		if (direction === 'left' && self.lane > 0) {
			self.lane--;
		} else if (direction === 'right' && self.lane < 2) {
			self.lane++;
		}
		self.targetX = lanePositions[self.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 = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game constants
var lanePositions = [2048 * 0.25, 2048 * 0.5, 2048 * 0.75];
var gameSpeed = 8;
var baseGameSpeed = 8;
var minGameSpeed = 4;
var maxGameSpeed = 20;
var baseSpeedIncrement = 0.002;
var spawnTimer = 0;
var coinSpawnTimer = 0;
var roadLineTimer = 0;
var distance = 0;
var coins = 0;
var isGameOver = false;
var isGasPressed = false;
var isBrakePressed = false;
var gasAcceleration = 0.3;
var brakeDeceleration = 0.5;
// Game arrays
var enemyCars = [];
var gameCoins = [];
var roadLines = [];
// Create player car
var playerCar = game.addChild(new PlayerCar());
playerCar.x = lanePositions[1];
playerCar.y = 2732 * 0.8;
playerCar.targetX = lanePositions[1];
// Create UI
var distanceText = new Text2('Distance: 0', {
	size: 60,
	fill: 0xFFFFFF
});
distanceText.anchor.set(0, 0);
distanceText.x = 150;
distanceText.y = 50;
LK.gui.topLeft.addChild(distanceText);
var coinText = new Text2('Coins: 0', {
	size: 60,
	fill: 0xF1C40F
});
coinText.anchor.set(1, 0);
coinText.x = -50;
coinText.y = 50;
LK.gui.topRight.addChild(coinText);
var speedText = new Text2('Speed: 8', {
	size: 50,
	fill: 0xFFFFFF
});
speedText.anchor.set(0.5, 0);
speedText.x = 0;
speedText.y = 120;
LK.gui.top.addChild(speedText);
// Gas button
var gasButton = new Text2('GAS', {
	size: 80,
	fill: 0x27AE60
});
gasButton.anchor.set(0.5, 1);
gasButton.x = -200;
gasButton.y = -50;
LK.gui.bottom.addChild(gasButton);
// Brake button
var brakeButton = new Text2('BRAKE', {
	size: 80,
	fill: 0xE74C3C
});
brakeButton.anchor.set(0.5, 1);
brakeButton.x = 200;
brakeButton.y = -50;
LK.gui.bottom.addChild(brakeButton);
// Input handling
game.down = function (x, y, obj) {
	if (isGameOver) return;
	// Check if touching gas button area (bottom left)
	if (y > 2732 * 0.8 && x < 2048 * 0.4) {
		isGasPressed = true;
		gasButton.tint = 0x1E8449; // Darker green when pressed
		return;
	}
	// Check if touching brake button area (bottom right)
	if (y > 2732 * 0.8 && x > 2048 * 0.6) {
		isBrakePressed = true;
		brakeButton.tint = 0xC0392B; // Darker red when pressed
		return;
	}
	// Lane changing (upper area)
	if (y < 2732 * 0.8) {
		if (x < 2048 / 2) {
			playerCar.changeLane('left');
		} else {
			playerCar.changeLane('right');
		}
	}
};
game.up = function (x, y, obj) {
	if (isGameOver) return;
	// Release gas button
	if (isGasPressed) {
		isGasPressed = false;
		gasButton.tint = 0xFFFFFF; // Reset to normal color
	}
	// Release brake button
	if (isBrakePressed) {
		isBrakePressed = false;
		brakeButton.tint = 0xFFFFFF; // Reset to normal color
	}
};
// Spawn functions
function spawnEnemyCar() {
	var enemy = new EnemyCar();
	var lane = Math.floor(Math.random() * 3);
	enemy.x = lanePositions[lane];
	enemy.y = -200;
	enemy.speed = gameSpeed;
	enemy.lastY = enemy.y;
	enemy.lastIntersecting = false;
	enemyCars.push(enemy);
	game.addChild(enemy);
}
function spawnCoin() {
	var coin = new Coin();
	var lane = Math.floor(Math.random() * 3);
	coin.x = lanePositions[lane];
	coin.y = -100;
	coin.speed = gameSpeed;
	coin.lastY = coin.y;
	coin.lastIntersecting = false;
	gameCoins.push(coin);
	game.addChild(coin);
}
function spawnRoadLine() {
	for (var i = 0; i < 2; i++) {
		var roadLine = new RoadLine();
		roadLine.x = lanePositions[i] + (lanePositions[i + 1] - lanePositions[i]) / 2;
		roadLine.y = -100;
		roadLine.speed = gameSpeed;
		roadLine.lastY = roadLine.y;
		roadLines.push(roadLine);
		game.addChild(roadLine);
	}
}
// Game update loop
game.update = function () {
	if (isGameOver) return;
	// Update distance and speed
	distance += 0.1;
	baseGameSpeed += baseSpeedIncrement;
	// Handle gas and brake input
	if (isGasPressed && !isBrakePressed) {
		gameSpeed += gasAcceleration;
		if (gameSpeed > maxGameSpeed) gameSpeed = maxGameSpeed;
	} else if (isBrakePressed && !isGasPressed) {
		gameSpeed -= brakeDeceleration;
		if (gameSpeed < minGameSpeed) gameSpeed = minGameSpeed;
	} else {
		// Return to base speed gradually when neither is pressed
		if (gameSpeed > baseGameSpeed) {
			gameSpeed -= 0.1;
			if (gameSpeed < baseGameSpeed) gameSpeed = baseGameSpeed;
		} else if (gameSpeed < baseGameSpeed) {
			gameSpeed += 0.1;
			if (gameSpeed > baseGameSpeed) gameSpeed = baseGameSpeed;
		}
	}
	// Update UI
	distanceText.setText('Distance: ' + Math.floor(distance));
	coinText.setText('Coins: ' + coins);
	speedText.setText('Speed: ' + Math.floor(gameSpeed));
	// Spawn timers
	spawnTimer++;
	coinSpawnTimer++;
	roadLineTimer++;
	// Spawn enemy cars
	if (spawnTimer >= Math.max(60 - Math.floor(distance / 10), 30)) {
		spawnEnemyCar();
		spawnTimer = 0;
	}
	// Spawn coins
	if (coinSpawnTimer >= 120 + Math.floor(Math.random() * 120)) {
		spawnCoin();
		coinSpawnTimer = 0;
	}
	// Spawn road lines
	if (roadLineTimer >= 40) {
		spawnRoadLine();
		roadLineTimer = 0;
	}
	// Update and check enemy cars
	for (var i = enemyCars.length - 1; i >= 0; i--) {
		var enemy = enemyCars[i];
		// Initialize tracking variables
		if (enemy.lastY === undefined) enemy.lastY = enemy.y;
		if (enemy.lastIntersecting === undefined) enemy.lastIntersecting = false;
		// Check if enemy went off screen
		if (enemy.lastY <= 2800 && enemy.y > 2800) {
			enemy.destroy();
			enemyCars.splice(i, 1);
			continue;
		}
		// Check collision with player
		var currentIntersecting = enemy.intersects(playerCar);
		if (!enemy.lastIntersecting && currentIntersecting) {
			// Collision detected
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.setScore(Math.floor(distance) + coins * 10);
			isGameOver = true;
			LK.showGameOver();
			return;
		}
		// Update last known states
		enemy.lastY = enemy.y;
		enemy.lastIntersecting = currentIntersecting;
	}
	// Update and check coins
	for (var j = gameCoins.length - 1; j >= 0; j--) {
		var coin = gameCoins[j];
		// Initialize tracking variables
		if (coin.lastY === undefined) coin.lastY = coin.y;
		if (coin.lastIntersecting === undefined) coin.lastIntersecting = false;
		// Check if coin went off screen
		if (coin.lastY <= 2800 && coin.y > 2800) {
			coin.destroy();
			gameCoins.splice(j, 1);
			continue;
		}
		// Check collection by player
		var currentIntersecting = coin.intersects(playerCar);
		if (!coin.lastIntersecting && currentIntersecting) {
			// Coin collected
			LK.getSound('coinCollect').play();
			coins++;
			// Speed boost platform - increase base speed when collecting coins
			baseGameSpeed += 0.1;
			if (baseGameSpeed > maxGameSpeed * 0.8) baseGameSpeed = maxGameSpeed * 0.8;
			coin.destroy();
			gameCoins.splice(j, 1);
			continue;
		}
		// Update last known states
		coin.lastY = coin.y;
		coin.lastIntersecting = currentIntersecting;
	}
	// Update road lines
	for (var k = roadLines.length - 1; k >= 0; k--) {
		var roadLine = roadLines[k];
		// Initialize tracking variables
		if (roadLine.lastY === undefined) roadLine.lastY = roadLine.y;
		// Check if road line went off screen
		if (roadLine.lastY <= 2800 && roadLine.y > 2800) {
			roadLine.destroy();
			roadLines.splice(k, 1);
			continue;
		}
		// Update last known state
		roadLine.lastY = roadLine.y;
	}
	// Update all objects' speed
	for (var m = 0; m < enemyCars.length; m++) {
		enemyCars[m].speed = gameSpeed;
	}
	for (var n = 0; n < gameCoins.length; n++) {
		gameCoins[n].speed = gameSpeed;
	}
	for (var o = 0; o < roadLines.length; o++) {
		roadLines[o].speed = gameSpeed;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -318,8 +318,11 @@
 		if (!coin.lastIntersecting && currentIntersecting) {
 			// Coin collected
 			LK.getSound('coinCollect').play();
 			coins++;
+			// Speed boost platform - increase base speed when collecting coins
+			baseGameSpeed += 0.1;
+			if (baseGameSpeed > maxGameSpeed * 0.8) baseGameSpeed = maxGameSpeed * 0.8;
 			coin.destroy();
 			gameCoins.splice(j, 1);
 			continue;
 		}