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

/**** 
* Classes
****/ 
var CityBackground = Container.expand(function () {
	var self = Container.call(this);
	var backgroundElements = [];
	self.tileHeight = 400;
	self.tilesPerRow = 10;
	self.rows = 10;
	// Create initial background tiles
	for (var row = 0; row < self.rows; row++) {
		for (var col = 0; col < self.tilesPerRow; col++) {
			var element;
			var elementType = Math.floor(Math.random() * 3);
			if (elementType === 0) {
				// Road
				element = LK.getAsset('road', {
					anchorX: 0,
					anchorY: 0
				});
				element.width = 200;
				element.height = 100;
			} else if (elementType === 1) {
				// Building
				element = LK.getAsset('building', {
					anchorX: 0,
					anchorY: 0
				});
				element.width = 150;
				element.height = 200;
			} else {
				// City block
				element = LK.getAsset('cityBlock', {
					anchorX: 0,
					anchorY: 0
				});
				element.width = 200;
				element.height = 200;
			}
			element.x = col * 200;
			element.y = (row - 2) * self.tileHeight; // Start some tiles above screen
			element.alpha = 0.7;
			self.addChild(element);
			backgroundElements.push(element);
		}
	}
	self.update = function () {
		// Move all background elements with map speed
		for (var i = backgroundElements.length - 1; i >= 0; i--) {
			var element = backgroundElements[i];
			element.y += mapSpeed;
			// Remove elements that went off screen bottom
			if (element.y > 2732 + 400) {
				element.destroy();
				backgroundElements.splice(i, 1);
			}
		}
		// Add new row of tiles at the top when needed
		if (backgroundElements.length < self.tilesPerRow * 8) {
			var topY = -800;
			for (var col = 0; col < self.tilesPerRow; col++) {
				var element;
				var elementType = Math.floor(Math.random() * 3);
				if (elementType === 0) {
					element = LK.getAsset('road', {
						anchorX: 0,
						anchorY: 0
					});
					element.width = 200;
					element.height = 100;
				} else if (elementType === 1) {
					element = LK.getAsset('building', {
						anchorX: 0,
						anchorY: 0
					});
					element.width = 150;
					element.height = 200;
				} else {
					element = LK.getAsset('cityBlock', {
						anchorX: 0,
						anchorY: 0
					});
					element.width = 200;
					element.height = 200;
				}
				element.x = col * 200;
				element.y = topY;
				element.alpha = 0.7;
				self.addChild(element);
				backgroundElements.push(element);
			}
		}
	};
	return self;
});
var Diamond = Container.expand(function () {
	var self = Container.call(this);
	var diamondGraphics = self.attachAsset('diamond', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.rotationSpeed = 0.05;
	self.update = function () {
		diamondGraphics.rotation += self.rotationSpeed;
		// Move with map scrolling
		self.y += mapSpeed;
		// Remove diamonds that go off screen
		if (self.y > 2732 + 100) {
			self.destroy();
		}
	};
	return self;
});
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifetime = 30;
	self.age = 0;
	self.update = function () {
		self.age++;
		explosionGraphics.alpha = 1 - self.age / self.lifetime;
		explosionGraphics.scaleX = 1 + self.age / self.lifetime;
		explosionGraphics.scaleY = 1 + self.age / self.lifetime;
		// Move with map scrolling
		self.y += mapSpeed;
		if (self.age >= self.lifetime) {
			self.destroy();
		}
	};
	return self;
});
var GetawayCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('getawayCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.maxSpeed = 12;
	self.velocityX = 0;
	self.velocityY = 0;
	self.acceleration = 0.5;
	self.friction = 0.85;
	self.update = function () {
		var inputX = 0;
		var inputY = 0;
		var hasInput = false;
		// Apply joystick input if available (mobile)
		if (joystick && joystick.isActive) {
			inputX = joystick.currentX;
			inputY = joystick.currentY;
			hasInput = true;
		}
		// Apply keyboard input if available (desktop)
		if (keys['ArrowLeft'] || keys['a'] || keys['A']) {
			inputX = -1;
			hasInput = true;
		}
		if (keys['ArrowRight'] || keys['d'] || keys['D']) {
			inputX = 1;
			hasInput = true;
		}
		if (keys['ArrowUp'] || keys['w'] || keys['W']) {
			inputY = -1;
			hasInput = true;
		}
		if (keys['ArrowDown'] || keys['s'] || keys['S']) {
			inputY = 1;
			hasInput = true;
		}
		// Apply input to velocity
		if (hasInput) {
			self.velocityX += inputX * self.acceleration;
			self.velocityY += inputY * self.acceleration;
			// Rotate car to face movement direction
			if (inputX !== 0 || inputY !== 0) {
				var angle = Math.atan2(inputY, inputX);
				carGraphics.rotation = angle + Math.PI / 2;
			}
		}
		// Apply friction
		self.velocityX *= self.friction;
		self.velocityY *= self.friction;
		// Limit velocity
		var speed = Math.sqrt(self.velocityX * self.velocityX + self.velocityY * self.velocityY);
		if (speed > self.maxSpeed) {
			self.velocityX = self.velocityX / speed * self.maxSpeed;
			self.velocityY = self.velocityY / speed * self.maxSpeed;
		}
		// Move player
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Keep player within bounds with more generous boundaries
		self.x = Math.max(40, Math.min(2008, self.x));
		self.y = Math.max(40, Math.min(2692, self.y));
	};
	return self;
});
var JoystickControl = Container.expand(function () {
	var self = Container.call(this);
	var joystickBase = self.attachAsset('joystickBase', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var joystickKnob = self.attachAsset('joystickKnob', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	joystickBase.alpha = 0.8;
	joystickKnob.alpha = 1.0;
	self.isActive = false;
	self.currentX = 0;
	self.currentY = 0;
	self.maxDistance = 100;
	self.down = function (x, y, obj) {
		self.isActive = true;
		self.updateKnob(x, y);
	};
	self.move = function (x, y, obj) {
		if (self.isActive) {
			self.updateKnob(x, y);
		}
	};
	self.up = function (x, y, obj) {
		self.isActive = false;
		joystickKnob.x = 0;
		joystickKnob.y = 0;
		self.currentX = 0;
		self.currentY = 0;
	};
	self.updateKnob = function (x, y) {
		var deltaX = x;
		var deltaY = y;
		var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
		if (distance > self.maxDistance) {
			deltaX = deltaX / distance * self.maxDistance;
			deltaY = deltaY / distance * self.maxDistance;
		}
		joystickKnob.x = deltaX;
		joystickKnob.y = deltaY;
		self.currentX = deltaX / self.maxDistance;
		self.currentY = deltaY / self.maxDistance;
	};
	return self;
});
var PoliceCar = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('policeCar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.targetCar = null;
	self.lastCollisionCheck = false;
	self.velocityX = 0;
	self.velocityY = 0;
	self.acceleration = 0.2;
	self.friction = 0.95;
	self.update = function () {
		if (self.targetCar) {
			var deltaX = self.targetCar.x - self.x;
			var deltaY = self.targetCar.y - self.y;
			var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
			if (distance > 5) {
				// Apply acceleration towards target
				self.velocityX += deltaX / distance * self.acceleration;
				self.velocityY += deltaY / distance * self.acceleration;
				// Rotate car to face movement direction
				var angle = Math.atan2(deltaY, deltaX);
				carGraphics.rotation = angle + Math.PI / 2;
			}
		}
		// Apply friction
		self.velocityX *= self.friction;
		self.velocityY *= self.friction;
		// Limit velocity
		var speed = Math.sqrt(self.velocityX * self.velocityX + self.velocityY * self.velocityY);
		if (speed > self.speed) {
			self.velocityX = self.velocityX / speed * self.speed;
			self.velocityY = self.velocityY / speed * self.speed;
		}
		// Move police car
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Move with map scrolling
		self.y += mapSpeed;
		// Remove police cars that go off screen
		if (self.y > 2732 + 100) {
			self.destroy();
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var player;
var policeCars = [];
var diamonds = [];
var explosions = [];
var gameSpeed = 1;
var milestone = 0;
var diamondsCollected = 0;
var policeKills = 0;
var mapSpeed = 12;
var mapOffsetY = 0;
var baseMapSpeed = 12;
// Background colors for different milestones
var backgroundColors = [0x2c3e50, 0x34495e, 0x1abc9c, 0x16a085, 0x27ae60, 0x2980b9];
// UI Elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var diamondsTxt = new Text2('Diamonds: 0', {
	size: 50,
	fill: 0xF1C40F
});
diamondsTxt.anchor.set(0, 0);
diamondsTxt.x = 120;
diamondsTxt.y = 100;
LK.gui.topLeft.addChild(diamondsTxt);
var killsTxt = new Text2('Police Crashes: 0', {
	size: 50,
	fill: 0xE74C3C
});
killsTxt.anchor.set(1, 0);
killsTxt.x = -20;
killsTxt.y = 100;
LK.gui.topRight.addChild(killsTxt);
// Initialize city background
var cityBackground = game.addChild(new CityBackground());
// Initialize joystick control
var joystick = new JoystickControl();
joystick.x = 200;
joystick.y = 2532;
LK.gui.bottomLeft.addChild(joystick);
// Initialize player
player = game.addChild(new GetawayCar());
player.x = 1024; // Center horizontally
player.y = 1366; // Center vertically
// Spawn initial police cars
function spawnPoliceCar() {
	var police = new PoliceCar();
	// Spawn from random edge, favoring top and sides for moving map
	var edge = Math.floor(Math.random() * 4);
	switch (edge) {
		case 0:
			// Top (ahead of player)
			police.x = Math.random() * 2048;
			police.y = -60;
			break;
		case 1:
			// Right
			police.x = 2048 + 60;
			police.y = Math.random() * 1000; // Spawn closer to top
			break;
		case 2:
			// Bottom (behind player, will move forward)
			police.x = Math.random() * 2048;
			police.y = 2732 + 60;
			break;
		case 3:
			// Left
			police.x = -60;
			police.y = Math.random() * 1000; // Spawn closer to top
			break;
	}
	police.targetCar = player;
	police.speed = 2 + milestone * 0.5;
	policeCars.push(police);
	game.addChild(police);
}
// Spawn initial diamonds
function spawnDiamond() {
	var diamond = new Diamond();
	diamond.x = 100 + Math.random() * 1848;
	diamond.y = -100 - Math.random() * 500; // Spawn ahead of player
	diamonds.push(diamond);
	game.addChild(diamond);
}
// Initialize game objects
for (var i = 0; i < 3; i++) {
	spawnPoliceCar();
}
for (var i = 0; i < 1; i++) {
	spawnDiamond();
}
// Joystick controls are now handled by the JoystickControl class
// Desktop keyboard controls
var keys = {};
LK.on('keydown', function (event) {
	keys[event.key] = true;
});
LK.on('keyup', function (event) {
	keys[event.key] = false;
});
// Desktop mouse controls for joystick
game.down = function (x, y, obj) {
	// Convert game coordinates to joystick local coordinates
	var joystickPos = LK.gui.bottomLeft.toLocal(game.toGlobal({
		x: x,
		y: y
	}));
	var relativeX = joystickPos.x - joystick.x;
	var relativeY = joystickPos.y - joystick.y;
	var distance = Math.sqrt(relativeX * relativeX + relativeY * relativeY);
	// Check if click is within joystick area
	if (distance <= joystick.maxDistance) {
		joystick.down(relativeX, relativeY, obj);
	}
};
game.move = function (x, y, obj) {
	if (joystick.isActive) {
		// Convert game coordinates to joystick local coordinates
		var joystickPos = LK.gui.bottomLeft.toLocal(game.toGlobal({
			x: x,
			y: y
		}));
		var relativeX = joystickPos.x - joystick.x;
		var relativeY = joystickPos.y - joystick.y;
		joystick.move(relativeX, relativeY, obj);
	}
};
game.up = function (x, y, obj) {
	if (joystick.isActive) {
		joystick.up(x, y, obj);
	}
};
// Update score display
function updateScore() {
	var totalScore = diamondsCollected * 100 + policeKills * 500;
	LK.setScore(totalScore);
	scoreTxt.setText('Score: ' + totalScore);
	diamondsTxt.setText('Diamonds: ' + diamondsCollected);
	killsTxt.setText('Police Crashes: ' + policeKills);
}
// Check milestone progression
function checkMilestone() {
	var newMilestone = Math.floor(LK.getScore() / 1000);
	if (newMilestone > milestone) {
		milestone = newMilestone;
		// Change background color
		if (milestone < backgroundColors.length) {
			tween(game, {
				backgroundColor: backgroundColors[milestone]
			}, {
				duration: 2000
			});
		}
		// Spawn additional police car
		spawnPoliceCar();
	}
}
// Create explosion effect
function createExplosion(x, y) {
	var explosion = new Explosion();
	explosion.x = x;
	explosion.y = y;
	explosions.push(explosion);
	game.addChild(explosion);
}
// Main game loop
game.update = function () {
	// Check diamond collection
	for (var i = diamonds.length - 1; i >= 0; i--) {
		var diamond = diamonds[i];
		if (!diamond.collected && player.intersects(diamond)) {
			diamond.collected = true;
			diamondsCollected++;
			LK.getSound('collectDiamond').play();
			diamond.destroy();
			diamonds.splice(i, 1);
			// Spawn new diamond
			spawnDiamond();
		}
	}
	// Check police car collisions with player
	for (var i = 0; i < policeCars.length; i++) {
		var police = policeCars[i];
		if (player.intersects(police)) {
			LK.getSound('gameOver').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Check police car collisions with each other
	for (var i = policeCars.length - 1; i >= 0; i--) {
		var police1 = policeCars[i];
		var collided = false;
		for (var j = i + 1; j < policeCars.length; j++) {
			var police2 = policeCars[j];
			if (police1.intersects(police2)) {
				// Create explosion
				var explosionX = (police1.x + police2.x) / 2;
				var explosionY = (police1.y + police2.y) / 2;
				createExplosion(explosionX, explosionY);
				policeKills++;
				LK.getSound('policeExplode').play();
				// Increase map speed by 1%
				mapSpeed = mapSpeed * 1.01;
				// Remove both police cars
				police1.destroy();
				police2.destroy();
				policeCars.splice(j, 1);
				policeCars.splice(i, 1);
				collided = true;
				break;
			}
		}
		if (collided) break;
	}
	// Clean up police cars that went off screen
	for (var i = policeCars.length - 1; i >= 0; i--) {
		var police = policeCars[i];
		if (police.y > 2732 + 100) {
			police.destroy();
			policeCars.splice(i, 1);
		}
	}
	// Clean up diamonds that went off screen
	for (var i = diamonds.length - 1; i >= 0; i--) {
		var diamond = diamonds[i];
		if (diamond.y > 2732 + 100) {
			diamond.destroy();
			diamonds.splice(i, 1);
			// Spawn new diamond
			spawnDiamond();
		}
	}
	// Clean up explosions
	for (var i = explosions.length - 1; i >= 0; i--) {
		var explosion = explosions[i];
		if (explosion.age >= explosion.lifetime) {
			explosions.splice(i, 1);
		}
	}
	// Spawn new police cars periodically
	if (LK.ticks % (300 - milestone * 30) === 0) {
		spawnPoliceCar();
	}
	// Spawn new diamonds periodically
	if (LK.ticks % 500 === 0) {
		spawnDiamond();
	}
	// Update score and check milestones
	updateScore();
	checkMilestone();
	// Win condition
	if (LK.getScore() >= 10000) {
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -319,11 +319,11 @@
 var gameSpeed = 1;
 var milestone = 0;
 var diamondsCollected = 0;
 var policeKills = 0;
-var mapSpeed = 6;
+var mapSpeed = 12;
 var mapOffsetY = 0;
-var baseMapSpeed = 6;
+var baseMapSpeed = 12;
 // Background colors for different milestones
 var backgroundColors = [0x2c3e50, 0x34495e, 0x1abc9c, 0x16a085, 0x27ae60, 0x2980b9];
 // UI Elements
 var scoreTxt = new Text2('Score: 0', {