/**** 
* Classes
****/ 
// Player's car class
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.lastX = 0;
	self.lastY = 0;
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
	};
	return self;
});
// Police car class
var PoliceCar = Container.expand(function () {
	var self = Container.call(this);
	var car = self.attachAsset('policeCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = car.width;
	self.height = car.height;
	self.speed = 18 + Math.random() * 8;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		// Police car steering logic: steer toward playerCar.x
		if (typeof playerCar !== "undefined") {
			// Only steer if not already close to player
			var dx = playerCar.x - self.x;
			// Steer a bit each frame, but not too fast
			var steerAmount = Math.max(-18, Math.min(18, dx * 0.12));
			self.x += steerAmount;
		} else if (typeof getLaneX === "function" && typeof self.lane !== "undefined") {
			// Defensive: if no playerCar, reset to lane
			self.x = getLaneX(self.lane);
		}
		self.y += self.speed;
	};
	return self;
});
// Power-up class
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var pu = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = pu.width;
	self.height = pu.height;
	self.speed = 22;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});
// Traffic car class
var TrafficCar = Container.expand(function () {
	var self = Container.call(this);
	var car = self.attachAsset('trafficCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = car.width;
	self.height = car.height;
	self.speed = 20 + Math.random() * 10;
	self.lastY = 0;
	self.update = function () {
		self.lastY = self.y;
		self.y += self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
;
// --- Car Chase Game Variables ---
var playerCar;
var policeCars = [];
var trafficCars = [];
var powerUps = [];
var roadLines = [];
var score = 0;
var gameSpeed = 22;
var laneCount = 3;
var laneWidth = 410;
var roadLeft = (2048 - laneCount * laneWidth) / 2 + laneWidth / 2;
var roadRight = 2048 - roadLeft;
var dragNode = null;
var lastTouchX = 0;
var scoreTxt;
// --- Helper: Get lane X position ---
function getLaneX(lane) {
	return roadLeft + lane * laneWidth;
}
// --- Setup Player Car ---
playerCar = new PlayerCar();
playerCar.x = getLaneX(1);
playerCar.y = 2732 - 400;
game.addChild(playerCar);
// --- Setup Score Text ---
scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// --- Setup Road Lines ---
for (var i = 0; i < 10; i++) {
	var line = LK.getAsset('roadLine', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	line.x = 2048 / 2;
	line.y = i * 300 + 100;
	roadLines.push(line);
	game.addChild(line);
}
// --- Touch Controls for Player Car ---
game.down = function (x, y, obj) {
	if (x > playerCar.x - playerCar.width / 2 && x < playerCar.x + playerCar.width / 2 && y > playerCar.y - playerCar.height / 2 && y < playerCar.y + playerCar.height / 2) {
		dragNode = playerCar;
		lastTouchX = x;
	}
};
game.move = function (x, y, obj) {
	if (dragNode === playerCar) {
		var dx = x - lastTouchX;
		playerCar.x += dx;
		// Clamp to road
		if (playerCar.x < roadLeft) playerCar.x = roadLeft;
		if (playerCar.x > roadRight) playerCar.x = roadRight;
		lastTouchX = x;
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// --- Main Game Update Loop ---
game.update = function () {
	// Move road lines
	for (var i = 0; i < roadLines.length; i++) {
		var line = roadLines[i];
		line.y += gameSpeed;
		if (line.y > 2732 + 60) {
			line.y -= 300 * roadLines.length;
		}
	}
	// Spawn traffic cars
	if (LK.ticks % 45 === 0) {
		var lane = Math.floor(Math.random() * laneCount);
		var tcar = new TrafficCar();
		tcar.x = getLaneX(lane);
		tcar.y = -200;
		trafficCars.push(tcar);
		game.addChild(tcar);
	}
	// Spawn police cars
	if (LK.ticks % 180 === 0) {
		var lane = Math.floor(Math.random() * laneCount);
		var pcar = new PoliceCar();
		pcar.lane = lane; // Assign lane for defensive code
		pcar.x = getLaneX(lane);
		pcar.y = -220;
		policeCars.push(pcar);
		game.addChild(pcar);
	}
	// Spawn power-ups
	if (LK.ticks % 300 === 0) {
		var lane = Math.floor(Math.random() * laneCount);
		var pu = new PowerUp();
		pu.x = getLaneX(lane);
		pu.y = -100;
		powerUps.push(pu);
		game.addChild(pu);
	}
	// Update player car
	playerCar.update();
	// Update and remove off-screen traffic cars
	for (var i = trafficCars.length - 1; i >= 0; i--) {
		var tcar = trafficCars[i];
		tcar.update();
		if (tcar.y > 2732 + 200) {
			tcar.destroy();
			trafficCars.splice(i, 1);
			continue;
		}
		// Collision with player
		if (tcar.intersects(playerCar)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Update and remove off-screen police cars
	for (var i = policeCars.length - 1; i >= 0; i--) {
		var pcar = policeCars[i];
		pcar.update();
		if (pcar.y > 2732 + 220) {
			pcar.destroy();
			policeCars.splice(i, 1);
			continue;
		}
		// Collision with player
		if (pcar.intersects(playerCar)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Update and remove off-screen power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var pu = powerUps[i];
		pu.update();
		if (pu.y > 2732 + 100) {
			pu.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		// Collision with player
		if (pu.intersects(playerCar)) {
			score += 10;
			scoreTxt.setText(score);
			LK.effects.flashObject(playerCar, 0xffeb3b, 500);
			pu.destroy();
			powerUps.splice(i, 1);
			continue;
		}
	}
	// Score increases with distance
	if (LK.ticks % 6 === 0) {
		score += 1;
		scoreTxt.setText(score);
	}
	// Gradually increase game speed
	if (LK.ticks % 180 === 0 && gameSpeed < 40) {
		gameSpeed += 1;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -31,8 +31,19 @@
 	self.speed = 18 + Math.random() * 8;
 	self.lastY = 0;
 	self.update = function () {
 		self.lastY = self.y;
+		// Police car steering logic: steer toward playerCar.x
+		if (typeof playerCar !== "undefined") {
+			// Only steer if not already close to player
+			var dx = playerCar.x - self.x;
+			// Steer a bit each frame, but not too fast
+			var steerAmount = Math.max(-18, Math.min(18, dx * 0.12));
+			self.x += steerAmount;
+		} else if (typeof getLaneX === "function" && typeof self.lane !== "undefined") {
+			// Defensive: if no playerCar, reset to lane
+			self.x = getLaneX(self.lane);
+		}
 		self.y += self.speed;
 	};
 	return self;
 });
@@ -166,8 +177,9 @@
 	// Spawn police cars
 	if (LK.ticks % 180 === 0) {
 		var lane = Math.floor(Math.random() * laneCount);
 		var pcar = new PoliceCar();
+		pcar.lane = lane; // Assign lane for defensive code
 		pcar.x = getLaneX(lane);
 		pcar.y = -220;
 		policeCars.push(pcar);
 		game.addChild(pcar);