===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,231 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Platform = Container.expand(function (type) {
+	var self = Container.call(this);
+	self.platformType = type || 'normal';
+	var assetName = 'platform';
+	if (self.platformType === 'moving') {
+		assetName = 'movingPlatform';
+	} else if (self.platformType === 'bounce') {
+		assetName = 'bouncePlatform';
+	}
+	var platformGraphics = self.attachAsset(assetName, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.moveDirection = 1;
+	self.moveSpeed = 2;
+	self.update = function () {
+		if (self.platformType === 'moving') {
+			self.x += self.moveDirection * self.moveSpeed;
+			if (self.x <= 100 || self.x >= 1948) {
+				self.moveDirection *= -1;
+			}
+		}
+	};
+	self.getBounceForce = function () {
+		if (self.platformType === 'bounce') {
+			return -25;
+		}
+		return -18;
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityX = 0;
+	self.velocityY = 0;
+	self.isOnPlatform = false;
+	self.lastY = 0;
+	self.update = function () {
+		// Apply horizontal movement
+		self.x += self.velocityX;
+		// Apply gravity
+		self.velocityY += 0.8;
+		self.y += self.velocityY;
+		// Horizontal deceleration
+		self.velocityX *= 0.95;
+		// Keep player within screen bounds horizontally
+		if (self.x < 40) {
+			self.x = 40;
+			self.velocityX = 0;
+		}
+		if (self.x > 2008) {
+			self.x = 2008;
+			self.velocityX = 0;
+		}
+		self.lastY = self.y;
+	};
+	self.bounce = function (bounceForce) {
+		self.velocityY = bounceForce || -18;
+		self.isOnPlatform = false;
+		LK.getSound('bounce').play();
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var player;
+var platforms = [];
+var cameraY = 0;
+var nextPlatformY = 2500;
+var highestY = 2732;
+var gameStarted = false;
+var leftPressed = false;
+var rightPressed = false;
+// Initialize score display
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Initialize height display
+var heightTxt = new Text2('Height: 0m', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+heightTxt.anchor.set(0, 0);
+heightTxt.x = 120;
+heightTxt.y = 20;
+LK.gui.topLeft.addChild(heightTxt);
+// Create player
+player = game.addChild(new Player());
+player.x = 1024;
+player.y = 2500;
+// Create initial platforms
+function createPlatform(x, y, type) {
+	var platform = new Platform(type);
+	platform.x = x;
+	platform.y = y;
+	platforms.push(platform);
+	game.addChild(platform);
+	return platform;
+}
+// Generate initial platforms
+createPlatform(1024, 2600, 'normal');
+for (var i = 0; i < 15; i++) {
+	var x = Math.random() * 1600 + 200;
+	var y = nextPlatformY - Math.random() * 150 - 100;
+	var platformType = 'normal';
+	if (Math.random() < 0.2) {
+		platformType = 'moving';
+	} else if (Math.random() < 0.1) {
+		platformType = 'bounce';
+	}
+	createPlatform(x, y, platformType);
+	nextPlatformY = y;
+}
+function generateNewPlatforms() {
+	while (nextPlatformY > cameraY - 1000) {
+		var x = Math.random() * 1600 + 200;
+		var y = nextPlatformY - Math.random() * 200 - 120;
+		var platformType = 'normal';
+		var random = Math.random();
+		if (random < 0.25) {
+			platformType = 'moving';
+		} else if (random < 0.15) {
+			platformType = 'bounce';
+		}
+		createPlatform(x, y, platformType);
+		nextPlatformY = y;
+	}
+}
+function updateCamera() {
+	var targetCameraY = player.y - 1800;
+	if (targetCameraY < cameraY) {
+		cameraY = targetCameraY;
+	}
+	game.y = -cameraY;
+}
+function updateScore() {
+	if (player.y < highestY) {
+		highestY = player.y;
+		var score = Math.floor((2732 - highestY) / 10);
+		LK.setScore(score);
+		scoreTxt.setText(LK.getScore());
+		var height = Math.floor(score / 10);
+		heightTxt.setText('Height: ' + height + 'm');
+	}
+}
+function checkPlatformCollisions() {
+	if (player.velocityY <= 0) return;
+	for (var i = 0; i < platforms.length; i++) {
+		var platform = platforms[i];
+		if (player.intersects(platform)) {
+			var playerBottom = player.y + 40;
+			var platformTop = platform.y - 10;
+			if (playerBottom >= platformTop && playerBottom <= platformTop + 20) {
+				player.y = platformTop - 40;
+				player.bounce(platform.getBounceForce());
+				break;
+			}
+		}
+	}
+}
+function cleanupPlatforms() {
+	for (var i = platforms.length - 1; i >= 0; i--) {
+		var platform = platforms[i];
+		if (platform.y > cameraY + 3000) {
+			platform.destroy();
+			platforms.splice(i, 1);
+		}
+	}
+}
+function handleInput() {
+	if (leftPressed) {
+		player.velocityX -= 1.2;
+		if (player.velocityX < -8) player.velocityX = -8;
+	}
+	if (rightPressed) {
+		player.velocityX += 1.2;
+		if (player.velocityX > 8) player.velocityX = 8;
+	}
+}
+// Game controls
+game.down = function (x, y, obj) {
+	if (x < 1024) {
+		leftPressed = true;
+	} else {
+		rightPressed = true;
+	}
+	gameStarted = true;
+};
+game.up = function (x, y, obj) {
+	leftPressed = false;
+	rightPressed = false;
+};
+// Main game loop
+game.update = function () {
+	if (!gameStarted) return;
+	handleInput();
+	checkPlatformCollisions();
+	updateCamera();
+	updateScore();
+	generateNewPlatforms();
+	cleanupPlatforms();
+	// Check for game over (player falls too far below camera)
+	if (player.y > cameraY + 2900) {
+		LK.getSound('fall').play();
+		LK.showGameOver();
+	}
+};
\ No newline at end of file