/**** 
* Classes
****/
// Grizzly Bear class
var GrizzlyBear = Container.expand(function () {
	var self = Container.call(this);
	var bearGraphics = LK.getAsset('grizzlyBear', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.addChild(bearGraphics);
	self.isJumping = false;
	self.jumpSpeed = 0;
	self.gravity = 0.4;
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.jumpSpeed = -18;
		}
	};
	self.fall = function () {
		if (self.isJumping) {
			self.jumpSpeed += self.gravity;
			self.y += self.jumpSpeed;
			if (self.y >= 2832 - self.height) {
				self.y = 2832 - self.height;
				self.isJumping = false;
			}
		}
	};
});
// Tree class
var Tree = Container.expand(function () {
	var self = Container.call(this);
	var treeGraphics = LK.getAsset('tree', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.addChild(treeGraphics);
	self.speed = 1;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.destroy();
		}
	};
});
// Lemming class
var Lemming = Container.expand(function () {
	var self = Container.call(this);
	var lemmingGraphics = LK.getAsset('lemming', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.addChild(lemmingGraphics);
	self.speed = 3;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.destroy();
		}
	};
});
// Rock class
var Rock = Container.expand(function () {
	var self = Container.call(this);
	var rockGraphics = LK.getAsset('rock', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.addChild(rockGraphics);
	self.speed = 5;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.destroy();
		}
	};
});
// Ground class
var Ground = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = LK.getAsset('ground', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.addChild(groundGraphics);
	self.speed = 1;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -2048) {
			// Assuming the ground asset is the same width as the game width
			self.x = 0; // Loop the ground to create a continuous moving effect
		}
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/
// Initialize important asset arrays and score
var lemmings = [];
var trees = [];
var score = 0;
var rocks = [];
var grounds = [];
var grizzlyBear;
// Create the Grizzly Bear
grizzlyBear = game.addChild(new GrizzlyBear());
grizzlyBear.x = 200;
grizzlyBear.y = 2732 - grizzlyBear.height + 100;
// Create score display
var scoreTxt = new Text2(score.toString(), {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
for (var gr = 0; gr < 5; gr++) {
	grounds[gr] = new Ground();
	grounds[gr].x = gr * grounds[gr].width;
	grounds[gr].y = 2950 - grounds[gr].height;
	game.addChildAt(grounds[gr], 0);
}
// Game tick event
LK.on('tick', function () {
	// Move the ground
	for (var gr = 0; gr < grounds.length; gr++) {
		grounds[gr].move();
	}
	// Spawn Trees at intervals
	if (LK.ticks % 800 === 0) {
		var newTree = new Tree();
		newTree.x = 2048;
		newTree.y = 2732 - newTree.height + 300;
		trees.push(newTree);
		game.addChildAt(newTree, 0);
	}
	// Make the Grizzly Bear fall
	grizzlyBear.fall();
	// Move each Lemming and check for collision with GrizzlyBear
	for (var i = lemmings.length - 1; i >= 0; i--) {
		lemmings[i].move();
		// Check if Lemming collides with GrizzlyBear and remove it
		if (grizzlyBear.intersects(lemmings[i])) {
			// Increase score by 10 when Grizzly Bear catches a Lemming
			score += 10;
			lemmings[i].destroy();
			lemmings.splice(i, 1);
			continue;
		}
		// Check if Lemming is off screen and destroy it
		if (lemmings[i].x < -lemmings[i].width) {
			lemmings[i].destroy();
			lemmings.splice(i, 1);
		}
	}
	// Move each Rock
	for (var i = rocks.length - 1; i >= 0; i--) {
		rocks[i].move();
		// Check if Rock collides with GrizzlyBear and end the game
		if (grizzlyBear.intersects(rocks[i])) {
			LK.showGameOver();
		}
		// Check if Rock is off screen and destroy it
		if (rocks[i].x < -rocks[i].width) {
			rocks[i].destroy();
			rocks.splice(i, 1);
		}
	}
	// Move each Tree
	for (var i = trees.length - 1; i >= 0; i--) {
		trees[i].move();
		// Check if Tree is off screen and destroy it
		if (trees[i].x < -trees[i].width) {
			trees[i].destroy();
			trees.splice(i, 1);
		}
	}
	// Update score display text
	scoreTxt.setText(score.toString());
	// Check if score reaches 100 and end the game as a win
	if (score >= 200) {
		LK.showGameOver();
	}
	// Spawn Rocks at random intervals
	var rockSpawnInterval = Math.floor(Math.random() * 800) + 400;
	if (LK.ticks % rockSpawnInterval === 0) {
		var newRock = new Rock();
		newRock.x = 2048;
		newRock.y = 2732 - newRock.height;
		rocks.push(newRock);
		game.addChildAt(newRock, game.children.length);
	}
	// Spawn Lemmings at random intervals
	var lemmingSpawnInterval = Math.floor(Math.random() * 200) + 40;
	if (LK.ticks % lemmingSpawnInterval === 0) {
		var newLemming = new Lemming();
		newLemming.x = 2048;
		newLemming.y = 2732 - newLemming.height;
		lemmings.push(newLemming);
		game.addChildAt(newLemming, game.children.length);
	}
});
// Touch event for Grizzly Bear to jump
game.on('down', function () {
	grizzlyBear.jump();
});

===================================================================
--- original.js
+++ change.js
@@ -131,10 +131,10 @@
 }
 // Game tick event
 LK.on('tick', function () {
 	// Move the ground
-	for (var gr = 0; gr < 5; gr++) {
-		grounds[i].move();
+	for (var gr = 0; gr < grounds.length; gr++) {
+		grounds[gr].move();
 	}
 	// Spawn Trees at intervals
 	if (LK.ticks % 800 === 0) {
 		var newTree = new Tree();