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

/**** 
* Classes
****/ 
var CenterLine = Container.expand(function () {
	var self = Container.call(this);
	var lineGraphics = self.attachAsset('centerLine', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.y += gameSpeed + 2;
		// Reset position when off screen
		if (self.y > 2800) {
			self.y = -100;
		}
	};
	return self;
});
var EnemyCar = Container.expand(function (carType) {
	var self = Container.call(this);
	var assetId = carType || 'enemyCar1';
	var carGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3 + Math.random() * 4;
	self.lane = 0;
	self.checkedForNearMiss = false;
	self.update = function () {
		self.y -= self.speed + gameSpeed;
	};
	return self;
});
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.targetX = 0;
	self.update = function () {
		// Smooth movement towards target position
		var diff = self.targetX - self.x;
		self.x += diff * 0.1;
		// Keep car within road bounds (3 lanes)
		if (self.x < 600) self.x = 600;
		if (self.x > 1448) self.x = 1448;
	};
	return self;
});
var RoadLane = Container.expand(function () {
	var self = Container.call(this);
	var laneGraphics = self.attachAsset('roadLane', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.y += gameSpeed + 2;
		// Reset position when off screen
		if (self.y > 2800) {
			self.y = -100;
		}
	};
	return self;
});
var RoadSurface = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('roadSurface', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var player;
var enemyCars = [];
var roadLanes = [];
var centerLines = [];
var gameSpeed = 2;
var maxGameSpeed = 12;
var speedIncreaseRate = 0.005;
var spawnTimer = 0;
var spawnRate = 120;
var distance = 0;
var isGameActive = true;
var dragActive = false;
// Lane positions (3 lanes)
var lanePositions = [700, 1024, 1348];
// Create road surface background
var roadSurface = new RoadSurface();
roadSurface.x = 1024;
roadSurface.y = 1366;
game.addChild(roadSurface);
// Create center lane dividers
for (var i = 0; i < 40; i++) {
	// Left center line (between lane 1 and 2)
	var leftLine = new CenterLine();
	leftLine.x = 862; // Between positions 700 and 1024
	leftLine.y = i * 100 - 500;
	centerLines.push(leftLine);
	game.addChild(leftLine);
	// Right center line (between lane 2 and 3)
	var rightLine = new CenterLine();
	rightLine.x = 1186; // Between positions 1024 and 1348
	rightLine.y = i * 100 - 500;
	centerLines.push(rightLine);
	game.addChild(rightLine);
}
// Create road edge lanes for visual effect
for (var i = 0; i < 20; i++) {
	// Left edge
	var leftEdge = new RoadLane();
	leftEdge.x = 575; // Left side of road
	leftEdge.y = i * 150 - 300;
	roadLanes.push(leftEdge);
	game.addChild(leftEdge);
	// Right edge
	var rightEdge = new RoadLane();
	rightEdge.x = 1473; // Right side of road
	rightEdge.y = i * 150 - 300;
	roadLanes.push(rightEdge);
	game.addChild(rightEdge);
}
// Create player car
player = new PlayerCar();
player.x = 1024;
player.y = 2200;
player.targetX = player.x;
game.addChild(player);
// Score display
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
// Distance display
var distanceText = new Text2('Distance: 0m', {
	size: 45,
	fill: 0xFFFFFF
});
distanceText.anchor.set(0, 0);
distanceText.x = 50;
distanceText.y = 100;
LK.gui.addChild(distanceText);
// Speed display
var speedText = new Text2('Speed: 0 km/h', {
	size: 45,
	fill: 0xFFFFFF
});
speedText.anchor.set(1, 0);
speedText.x = LK.gui.width - 50;
speedText.y = 100;
LK.gui.addChild(speedText);
function spawnEnemyCar() {
	if (!isGameActive) return;
	var carTypes = ['enemyCar1', 'enemyCar2', 'truck'];
	var randomType = carTypes[Math.floor(Math.random() * carTypes.length)];
	var enemy = new EnemyCar(randomType);
	// Choose random lane
	var laneIndex = Math.floor(Math.random() * lanePositions.length);
	enemy.x = lanePositions[laneIndex];
	enemy.y = 2900;
	enemy.lane = laneIndex;
	enemyCars.push(enemy);
	game.addChild(enemy);
}
function checkCollisions() {
	if (!isGameActive) return;
	for (var i = enemyCars.length - 1; i >= 0; i--) {
		var enemy = enemyCars[i];
		// Check collision with player
		if (player.intersects(enemy)) {
			// Game over
			isGameActive = false;
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		// Check for near miss bonus
		if (!enemy.checkedForNearMiss && Math.abs(enemy.y - player.y) < 100 && Math.abs(enemy.x - player.x) < 150) {
			enemy.checkedForNearMiss = true;
			LK.setScore(LK.getScore() + 10);
			LK.getSound('nearMiss').play();
			LK.effects.flashObject(player, 0x00ff00, 200);
		}
		// Remove cars that are off screen
		if (enemy.y < -200) {
			enemy.destroy();
			enemyCars.splice(i, 1);
		}
	}
}
function updateUI() {
	scoreText.setText('Score: ' + LK.getScore());
	distanceText.setText('Distance: ' + Math.floor(distance) + 'm');
	speedText.setText('Speed: ' + Math.floor(gameSpeed * 10) + ' km/h');
}
// Touch controls
game.down = function (x, y, obj) {
	if (!isGameActive) return;
	dragActive = true;
	player.targetX = x;
};
game.move = function (x, y, obj) {
	if (!isGameActive || !dragActive) return;
	player.targetX = x;
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// Main game loop
game.update = function () {
	if (!isGameActive) return;
	// Increase game speed gradually
	if (gameSpeed < maxGameSpeed) {
		gameSpeed += speedIncreaseRate;
	}
	// Update distance
	distance += gameSpeed * 0.1;
	// Add distance points
	if (LK.ticks % 10 === 0) {
		LK.setScore(LK.getScore() + 1);
	}
	// Spawn enemy cars
	spawnTimer++;
	var currentSpawnRate = Math.max(30, spawnRate - Math.floor(gameSpeed * 8));
	if (spawnTimer >= currentSpawnRate) {
		spawnEnemyCar();
		spawnTimer = 0;
	}
	// Check collisions
	checkCollisions();
	// Update UI
	updateUI();
	// Victory condition - survive for very long distance
	if (distance >= 10000) {
		isGameActive = false;
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -31,9 +31,9 @@
 	self.speed = 3 + Math.random() * 4;
 	self.lane = 0;
 	self.checkedForNearMiss = false;
 	self.update = function () {
-		self.y += self.speed + gameSpeed;
+		self.y -= self.speed + gameSpeed;
 	};
 	return self;
 });
 var PlayerCar = Container.expand(function () {
@@ -177,9 +177,9 @@
 	var enemy = new EnemyCar(randomType);
 	// Choose random lane
 	var laneIndex = Math.floor(Math.random() * lanePositions.length);
 	enemy.x = lanePositions[laneIndex];
-	enemy.y = -200;
+	enemy.y = 2900;
 	enemy.lane = laneIndex;
 	enemyCars.push(enemy);
 	game.addChild(enemy);
 }
@@ -203,9 +203,9 @@
 			LK.getSound('nearMiss').play();
 			LK.effects.flashObject(player, 0x00ff00, 200);
 		}
 		// Remove cars that are off screen
-		if (enemy.y > 2800) {
+		if (enemy.y < -200) {
 			enemy.destroy();
 			enemyCars.splice(i, 1);
 		}
 	}