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

/**** 
* Classes
****/ 
var Building = Container.expand(function () {
	var self = Container.call(this);
	var buildingGraphics = self.attachAsset('building', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var Destination = Container.expand(function () {
	var self = Container.call(this);
	var destinationGraphics = self.attachAsset('destination', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.pulse = function () {
		tween(self, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 500,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 500,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						self.pulse();
					}
				});
			}
		});
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gridX = 0;
	self.gridY = 0;
	self.isMoving = false;
	self.moveToGrid = function (newGridX, newGridY) {
		if (self.isMoving) return false;
		var targetX = newGridX * GRID_SIZE + GRID_SIZE / 2;
		var targetY = newGridY * GRID_SIZE + GRID_SIZE / 2;
		self.isMoving = true;
		self.gridX = newGridX;
		self.gridY = newGridY;
		tween(self, {
			x: targetX,
			y: targetY
		}, {
			duration: 200,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.isMoving = false;
				LK.getSound('move').play();
			}
		});
		return true;
	};
	return self;
});
var Road = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('road', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var SovietGuard = Container.expand(function () {
	var self = Container.call(this);
	var guardGraphics = self.attachAsset('guard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.centerX = 0;
	self.centerY = 0;
	self.radius = 60;
	self.angle = 0;
	self.speed = 0.05;
	self.startCircularMovement = function () {
		self.angle = 0;
		self.circularTween();
	};
	self.circularTween = function () {
		tween(self, {
			angle: self.angle + Math.PI * 2
		}, {
			duration: 4000,
			easing: tween.linear,
			onFinish: function onFinish() {
				self.circularTween();
			}
		});
	};
	self.update = function () {
		self.x = self.centerX + Math.cos(self.angle) * self.radius;
		self.y = self.centerY + Math.sin(self.angle) * self.radius;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x263238
});

/**** 
* Game Code
****/ 
var GRID_SIZE = 120;
var GRID_WIDTH = 17;
var GRID_HEIGHT = 22;
var currentLevel = 1;
var timeLeft = 60;
var isGameActive = true;
var gameStarted = false;
var cityGrid = [];
var player;
var destination;
var obstacles = [];
var buildings = [];
var guards = [];
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var timeTxt = new Text2('Time: 60', {
	size: 60,
	fill: 0xFFFFFF
});
timeTxt.anchor.set(0.5, 0);
timeTxt.y = 80;
LK.gui.top.addChild(timeTxt);
var levelTxt = new Text2('Level: 1', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(levelTxt);
levelTxt.x = -20;
levelTxt.y = 20;
function initializeGrid() {
	cityGrid = [];
	for (var x = 0; x < GRID_WIDTH; x++) {
		cityGrid[x] = [];
		for (var y = 0; y < GRID_HEIGHT; y++) {
			cityGrid[x][y] = 'road';
		}
	}
}
function createBuildings() {
	buildings = [];
	var buildingCount = Math.min(8 + currentLevel * 2, 20);
	for (var i = 0; i < buildingCount; i++) {
		var building = new Building();
		var gridX = Math.floor(Math.random() * (GRID_WIDTH - 2)) + 1;
		var gridY = Math.floor(Math.random() * (GRID_HEIGHT - 2)) + 1;
		building.x = gridX * GRID_SIZE;
		building.y = gridY * GRID_SIZE;
		game.addChild(building);
		buildings.push(building);
		cityGrid[gridX][gridY] = 'building';
		if (gridX + 1 < GRID_WIDTH) cityGrid[gridX + 1][gridY] = 'building';
	}
}
function createObstacles() {
	obstacles = [];
	var obstacleCount = Math.min(3 + currentLevel, 12);
	for (var i = 0; i < obstacleCount; i++) {
		var attempts = 0;
		var gridX, gridY;
		do {
			gridX = Math.floor(Math.random() * GRID_WIDTH);
			gridY = Math.floor(Math.random() * GRID_HEIGHT);
			attempts++;
		} while (cityGrid[gridX][gridY] !== 'road' && attempts < 50);
		if (attempts < 50) {
			var obstacle = new Obstacle();
			obstacle.x = gridX * GRID_SIZE + GRID_SIZE / 2;
			obstacle.y = gridY * GRID_SIZE + GRID_SIZE / 2;
			game.addChild(obstacle);
			obstacles.push(obstacle);
			cityGrid[gridX][gridY] = 'obstacle';
		}
	}
}
function createGuards() {
	guards = [];
	var guardCount = Math.min(2 + Math.floor(currentLevel / 2), 6);
	for (var i = 0; i < guardCount; i++) {
		var attempts = 0;
		var gridX, gridY;
		do {
			gridX = Math.floor(Math.random() * GRID_WIDTH);
			gridY = Math.floor(Math.random() * GRID_HEIGHT);
			attempts++;
		} while (cityGrid[gridX][gridY] !== 'road' && attempts < 50);
		if (attempts < 50) {
			var guard = new SovietGuard();
			guard.centerX = gridX * GRID_SIZE + GRID_SIZE / 2;
			guard.centerY = gridY * GRID_SIZE + GRID_SIZE / 2;
			guard.x = guard.centerX;
			guard.y = guard.centerY;
			game.addChild(guard);
			guards.push(guard);
			guard.startCircularMovement();
		}
	}
}
function createDestination() {
	var attempts = 0;
	var gridX, gridY;
	do {
		gridX = Math.floor(Math.random() * GRID_WIDTH);
		gridY = Math.floor(Math.random() * GRID_HEIGHT);
		attempts++;
	} while (cityGrid[gridX][gridY] !== 'road' && attempts < 100);
	destination = new Destination();
	destination.x = gridX * GRID_SIZE + GRID_SIZE / 2;
	destination.y = gridY * GRID_SIZE + GRID_SIZE / 2;
	destination.gridX = gridX;
	destination.gridY = gridY;
	game.addChild(destination);
	destination.pulse();
	cityGrid[gridX][gridY] = 'destination';
}
function createPlayer() {
	var attempts = 0;
	var gridX, gridY;
	do {
		gridX = Math.floor(Math.random() * GRID_WIDTH);
		gridY = Math.floor(Math.random() * GRID_HEIGHT);
		attempts++;
	} while (cityGrid[gridX][gridY] !== 'road' && attempts < 100);
	player = new Player();
	player.gridX = gridX;
	player.gridY = gridY;
	player.x = gridX * GRID_SIZE + GRID_SIZE / 2;
	player.y = gridY * GRID_SIZE + GRID_SIZE / 2;
	game.addChild(player);
}
function isValidMove(gridX, gridY) {
	if (gridX < 0 || gridX >= GRID_WIDTH || gridY < 0 || gridY >= GRID_HEIGHT) {
		return false;
	}
	var cellType = cityGrid[gridX][gridY];
	return cellType === 'road' || cellType === 'destination';
}
function checkWin() {
	// Check collision with guards
	for (var i = 0; i < guards.length; i++) {
		if (player.intersects(guards[i])) {
			LK.getSound('blocked').play();
			LK.effects.flashScreen(0xff0000, 500);
			isGameActive = false;
			LK.showGameOver();
			return;
		}
	}
	if (player.gridX === destination.gridX && player.gridY === destination.gridY) {
		var timeBonus = Math.floor(timeLeft * 10);
		var levelBonus = currentLevel * 100;
		LK.setScore(LK.getScore() + timeBonus + levelBonus);
		LK.getSound('complete').play();
		LK.effects.flashScreen(0x4CAF50, 500);
		currentLevel++;
		if (currentLevel > 10) {
			LK.showYouWin();
		} else {
			initializeLevel();
		}
	}
}
function initializeLevel() {
	for (var i = buildings.length - 1; i >= 0; i--) {
		buildings[i].destroy();
	}
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
	}
	for (var i = guards.length - 1; i >= 0; i--) {
		guards[i].destroy();
	}
	if (destination) destination.destroy();
	if (player) player.destroy();
	buildings = [];
	obstacles = [];
	guards = [];
	initializeGrid();
	createBuildings();
	createObstacles();
	createGuards();
	createDestination();
	createPlayer();
	timeLeft = Math.max(30, 80 - currentLevel * 3);
	levelTxt.setText('Level: ' + currentLevel);
	scoreTxt.setText('Score: ' + LK.getScore());
	timeTxt.setText('Time: ' + timeLeft);
}
function handleMovement(deltaX, deltaY) {
	if (!isGameActive || !gameStarted || player.isMoving) return;
	var newGridX = player.gridX + deltaX;
	var newGridY = player.gridY + deltaY;
	if (isValidMove(newGridX, newGridY)) {
		if (player.moveToGrid(newGridX, newGridY)) {
			checkWin();
		}
	} else {
		LK.getSound('blocked').play();
	}
}
var lastTouchX = 0;
var lastTouchY = 0;
var minSwipeDistance = 50;
game.down = function (x, y, obj) {
	if (!gameStarted) {
		gameStarted = true;
		initializeLevel();
	}
	lastTouchX = x;
	lastTouchY = y;
};
game.up = function (x, y, obj) {
	if (!gameStarted || !isGameActive) return;
	var deltaX = x - lastTouchX;
	var deltaY = y - lastTouchY;
	if (Math.abs(deltaX) > minSwipeDistance || Math.abs(deltaY) > minSwipeDistance) {
		if (Math.abs(deltaX) > Math.abs(deltaY)) {
			handleMovement(deltaX > 0 ? 1 : -1, 0);
		} else {
			handleMovement(0, deltaY > 0 ? 1 : -1);
		}
	}
};
var gameTimer = null;
game.update = function () {
	if (!gameStarted || !isGameActive) return;
	if (LK.ticks % 60 === 0 && timeLeft > 0) {
		timeLeft--;
		timeTxt.setText('Time: ' + timeLeft);
		if (timeLeft <= 0) {
			isGameActive = false;
			LK.showGameOver();
		}
	}
};
var instructionTxt = new Text2('Swipe to navigate through the city\nReach the golden destination!\nTap to start', {
	size: 50,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = 1024;
instructionTxt.y = 1366;
game.addChild(instructionTxt);

===================================================================
--- original.js
+++ change.js
@@ -91,9 +91,9 @@
 	return self;
 });
 var SovietGuard = Container.expand(function () {
 	var self = Container.call(this);
-	var guardGraphics = self.attachAsset('obstacle', {
+	var guardGraphics = self.attachAsset('guard', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.centerX = 0;