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

/**** 
* Classes
****/ 
// Coin
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coin = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = coin.width;
	self.height = coin.height;
	self.speed = 28;
	self.lane = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Enemy Car
var EnemyCar = Container.expand(function () {
	var self = Container.call(this);
	var car = self.attachAsset('enemyCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = car.width;
	self.height = car.height;
	self.speed = 28 + Math.random() * 8;
	self.lane = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Fuel
var Fuel = Container.expand(function () {
	var self = Container.call(this);
	var fuel = self.attachAsset('fuel', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = fuel.width;
	self.height = fuel.height;
	self.speed = 28;
	self.lane = 1;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Player Car
var PlayerCar = Container.expand(function () {
	var self = Container.call(this);
	var car = self.attachAsset('playerCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = car.width;
	self.height = car.height;
	self.lane = 1; // 0: left, 1: center, 2: right
	self.fuel = 100; // percent
	self.invincible = false;
	self.update = function () {
		// No movement here; handled by input
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222222
});

/**** 
* Game Code
****/ 
// Road and lanes setup
// Car (player)
// Enemy car
// Coin collectible
// Fuel collectible
// Road lane
// Road background
var roadWidth = 900;
var laneCount = 3;
var laneWidth = roadWidth / laneCount;
var roadX = (2048 - roadWidth) / 2;
var roadY = 0;
// Road background
var road = LK.getAsset('road', {
	anchorX: 0,
	anchorY: 0,
	x: roadX,
	y: roadY
});
game.addChild(road);
// Lane markers
var laneMarkers = [];
for (var i = 1; i < laneCount; i++) {
	var laneMarker = LK.getAsset('lane', {
		anchorX: 0.5,
		anchorY: 0,
		x: roadX + i * laneWidth,
		y: 0
	});
	game.addChild(laneMarker);
	laneMarkers.push(laneMarker);
}
// Player car
var player = new PlayerCar();
player.x = roadX + laneWidth * 1.5;
player.y = 2732 - 400;
game.addChild(player);
// Score and fuel UI
var score = 0;
var distance = 0;
var coinsCollected = 0;
var fuelCollected = 0;
var scoreTxt = new Text2('Score: 0', {
	size: 90,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var fuelTxt = new Text2('Fuel: 100%', {
	size: 70,
	fill: "#fff"
});
fuelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(fuelTxt);
fuelTxt.y = 110;
// Lane positions
var lanePositions = [roadX + laneWidth * 0.5, roadX + laneWidth * 1.5, roadX + laneWidth * 2.5];
// Touch controls
// Use square placeholder assets for left/right buttons (replace 'leftBtnSquare' and 'rightBtnSquare' with your asset ids when available)
var leftBtn = LK.getAsset('leftBtnSquare', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 200,
	y: -250
});
LK.gui.bottomLeft.addChild(leftBtn);
var rightBtn = LK.getAsset('rightBtnSquare', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: -200,
	y: -250
});
LK.gui.bottomRight.addChild(rightBtn);
// Control handlers
leftBtn.down = function () {
	if (player.lane > 0) {
		player.lane--;
		tween(player, {
			x: lanePositions[player.lane]
		}, {
			duration: 120,
			easing: tween.cubicOut
		});
	}
};
rightBtn.down = function () {
	if (player.lane < laneCount - 1) {
		player.lane++;
		tween(player, {
			x: lanePositions[player.lane]
		}, {
			duration: 120,
			easing: tween.cubicOut
		});
	}
};
// Touch drag to move car left/right
var dragStartX = null;
var dragStartLane = null;
game.down = function (x, y, obj) {
	if (x > roadX && x < roadX + roadWidth && y > 2732 - 700) {
		dragStartX = x;
		dragStartLane = player.lane;
	}
};
game.move = function (x, y, obj) {
	if (dragStartX !== null) {
		var dx = x - dragStartX;
		if (Math.abs(dx) > laneWidth * 0.7) {
			if (dx < 0 && player.lane > 0) {
				player.lane--;
				tween(player, {
					x: lanePositions[player.lane]
				}, {
					duration: 120,
					easing: tween.cubicOut
				});
				dragStartX = x;
				dragStartLane = player.lane;
			} else if (dx > 0 && player.lane < laneCount - 1) {
				player.lane++;
				tween(player, {
					x: lanePositions[player.lane]
				}, {
					duration: 120,
					easing: tween.cubicOut
				});
				dragStartX = x;
				dragStartLane = player.lane;
			}
		}
	}
};
game.up = function (x, y, obj) {
	dragStartX = null;
	dragStartLane = null;
};
// Game objects
var enemies = [];
var coins = [];
var fuels = [];
// Spawning timers
var enemySpawnTick = 0;
var coinSpawnTick = 0;
var fuelSpawnTick = 0;
// Main game update
game.update = function () {
	// Distance and fuel
	distance += 1;
	player.fuel -= 0.025;
	if (player.fuel < 0) player.fuel = 0;
	// Update UI
	score = Math.floor(distance / 5) + coinsCollected * 10 + fuelCollected * 20;
	scoreTxt.setText('Score: ' + score);
	fuelTxt.setText('Fuel: ' + Math.max(0, Math.floor(player.fuel)) + '%');
	// Game over: out of fuel
	if (player.fuel <= 0) {
		LK.effects.flashScreen(0x000000, 800);
		LK.showGameOver();
		return;
	}
	// Spawn enemy cars
	enemySpawnTick++;
	if (enemySpawnTick > 38 + Math.random() * 18) {
		enemySpawnTick = 0;
		var enemy = new EnemyCar();
		enemy.lane = Math.floor(Math.random() * laneCount);
		enemy.x = lanePositions[enemy.lane];
		enemy.y = -200;
		enemies.push(enemy);
		game.addChild(enemy);
	}
	// Spawn coins
	coinSpawnTick++;
	if (coinSpawnTick > 80 + Math.random() * 60) {
		coinSpawnTick = 0;
		var coin = new Coin();
		coin.lane = Math.floor(Math.random() * laneCount);
		coin.x = lanePositions[coin.lane];
		coin.y = -120;
		coins.push(coin);
		game.addChild(coin);
	}
	// Spawn fuel
	fuelSpawnTick++;
	if (fuelSpawnTick > 320 + Math.random() * 120) {
		fuelSpawnTick = 0;
		var fuel = new Fuel();
		fuel.lane = Math.floor(Math.random() * laneCount);
		fuel.x = lanePositions[fuel.lane];
		fuel.y = -120;
		fuels.push(fuel);
		game.addChild(fuel);
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var e = enemies[i];
		e.update();
		if (e.y > 2732 + 200) {
			e.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Collision with player
		if (e.intersects(player)) {
			LK.effects.flashObject(player, 0xff0000, 600);
			LK.effects.flashScreen(0xff0000, 800);
			LK.showGameOver();
			return;
		}
	}
	// Update coins
	for (var i = coins.length - 1; i >= 0; i--) {
		var c = coins[i];
		c.update();
		if (c.y > 2732 + 120) {
			c.destroy();
			coins.splice(i, 1);
			continue;
		}
		if (c.intersects(player)) {
			coinsCollected++;
			LK.effects.flashObject(player, 0xFFD600, 300);
			c.destroy();
			coins.splice(i, 1);
			continue;
		}
	}
	// Update fuels
	for (var i = fuels.length - 1; i >= 0; i--) {
		var f = fuels[i];
		f.update();
		if (f.y > 2732 + 120) {
			f.destroy();
			fuels.splice(i, 1);
			continue;
		}
		if (f.intersects(player)) {
			fuelCollected++;
			player.fuel = Math.min(100, player.fuel + 35);
			LK.effects.flashObject(player, 0x43A047, 300);
			f.destroy();
			fuels.splice(i, 1);
			continue;
		}
	}
};
// Center UI elements
scoreTxt.x = 2048 / 2;
scoreTxt.y = 20;
fuelTxt.x = 2048 / 2;
fuelTxt.y = 120;
// Prevent UI from overlapping top left menu
// (already handled by not placing anything at gui.topLeft or at x < 100, y < 100)

===================================================================
--- original.js
+++ change.js
@@ -177,26 +177,8 @@
 			easing: tween.cubicOut
 		});
 	}
 };
-upBtn.down = function () {
-	// "Boost" forward: move player up a bit (visual only)
-	var targetY = Math.max(player.y - 120, 600);
-	tween(player, {
-		y: targetY
-	}, {
-		duration: 100,
-		easing: tween.cubicOut,
-		onFinish: function onFinish() {
-			tween(player, {
-				y: 2732 - 400
-			}, {
-				duration: 180,
-				easing: tween.cubicIn
-			});
-		}
-	});
-};
 // Touch drag to move car left/right
 var dragStartX = null;
 var dragStartLane = null;
 game.down = function (x, y, obj) {