===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,359 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Coin class
+var Coin = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach coin asset (yellow ellipse)
+	var coinSprite = self.attachAsset('coin', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.width = coinSprite.width;
+	self.height = coinSprite.height;
+	// Animation: simple up-down bobbing
+	self.baseY = 0;
+	self.bobDir = 1;
+	self.update = function () {
+		self.x -= scrollSpeed;
+		// Bobbing animation
+		if (self.baseY === 0) self.baseY = self.y;
+		self.y = self.baseY + Math.sin(LK.ticks / 10 + self.x / 100) * 20;
+	};
+	return self;
+});
+// Enemy class
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach enemy asset (blue box)
+	var enemySprite = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.width = enemySprite.width;
+	self.height = enemySprite.height;
+	// Simple left-right movement on platform
+	self.vx = -scrollSpeed;
+	self.moveRange = 100;
+	self.baseX = 0;
+	self.update = function () {
+		self.x -= scrollSpeed;
+		// Optionally, add some movement
+		if (self.baseX === 0) self.baseX = self.x;
+		self.x = self.baseX + Math.sin(LK.ticks / 40) * self.moveRange;
+	};
+	return self;
+});
+// Platform class
+var Platform = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach platform asset (green box)
+	var platformSprite = self.attachAsset('platform', {
+		anchorX: 0,
+		anchorY: 0
+	});
+	self.width = platformSprite.width;
+	self.height = platformSprite.height;
+	// Platforms are static, but can be moved for scrolling
+	self.update = function () {
+		// Move left for scrolling effect
+		self.x -= scrollSpeed;
+	};
+	return self;
+});
+// Player class
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach player asset (red box)
+	var playerSprite = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	// Physics properties
+	self.vx = 0;
+	self.vy = 0;
+	self.isOnGround = false;
+	self.width = playerSprite.width;
+	self.height = playerSprite.height;
+	// Jumping state
+	self.isJumping = false;
+	// Update method called every tick
+	self.update = function () {
+		// Gravity
+		self.vy += gravity;
+		// Horizontal movement (auto-run)
+		self.x += self.vx;
+		// Vertical movement
+		self.y += self.vy;
+		// Prevent falling below ground
+		if (self.y > groundY) {
+			self.y = groundY;
+			self.vy = 0;
+			self.isOnGround = true;
+			self.isJumping = false;
+		} else {
+			self.isOnGround = false;
+		}
+	};
+	// Jump method
+	self.jump = function () {
+		if (self.isOnGround && !self.isJumping) {
+			self.vy = -jumpStrength;
+			self.isJumping = true;
+			self.isOnGround = false;
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87ceeb // Sky blue
+});
+
+/**** 
+* Game Code
+****/ 
+// Tween plugin for animations
+// --- Game constants ---
+var gravity = 2.5;
+var jumpStrength = 55;
+var scrollSpeed = 16;
+var groundY = 2300; // Y position of the ground/platforms
+// --- Game state ---
+var player;
+var platforms = [];
+var coins = [];
+var enemies = [];
+var score = 0;
+var lives = 3;
+var level = 1;
+var isGameOver = false;
+var isYouWin = false;
+// --- GUI elements ---
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFF700
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+var livesTxt = new Text2('♥♥♥', {
+	size: 100,
+	fill: 0xFF4444
+});
+livesTxt.anchor.set(0.5, 0);
+LK.gui.topRight.addChild(livesTxt);
+// --- Asset initialization (shapes) ---
+// --- Helper functions ---
+// Create a platform at (x, y) with optional width
+function createPlatform(x, y, width) {
+	var plat = new Platform();
+	plat.x = x;
+	plat.y = y;
+	if (width) plat.width = width;
+	platforms.push(plat);
+	game.addChild(plat);
+	return plat;
+}
+// Create a coin at (x, y)
+function createCoin(x, y) {
+	var coin = new Coin();
+	coin.x = x;
+	coin.y = y;
+	coins.push(coin);
+	game.addChild(coin);
+	return coin;
+}
+// Create an enemy at (x, y)
+function createEnemy(x, y) {
+	var enemy = new Enemy();
+	enemy.x = x;
+	enemy.y = y;
+	enemies.push(enemy);
+	game.addChild(enemy);
+	return enemy;
+}
+// Reset game state for new game or level
+function resetGame() {
+	// Remove all platforms, coins, enemies
+	for (var i = 0; i < platforms.length; i++) platforms[i].destroy();
+	for (var i = 0; i < coins.length; i++) coins[i].destroy();
+	for (var i = 0; i < enemies.length; i++) enemies[i].destroy();
+	platforms = [];
+	coins = [];
+	enemies = [];
+	// Reset score and lives
+	score = 0;
+	lives = 3;
+	level = 1;
+	isGameOver = false;
+	isYouWin = false;
+	LK.setScore(0);
+	// Update GUI
+	scoreTxt.setText(score);
+	livesTxt.setText('♥♥♥');
+	// Create player
+	if (player) player.destroy();
+	player = new Player();
+	player.x = 300;
+	player.y = groundY;
+	player.vx = scrollSpeed;
+	game.addChild(player);
+	// Create level
+	createLevel(level);
+}
+// Create a level layout
+function createLevel(levelNum) {
+	// Simple level: ground platform, some floating platforms, coins, enemies
+	// Ground
+	createPlatform(0, groundY, 2048 * 2);
+	// Floating platforms
+	createPlatform(700, groundY - 350, 400);
+	createPlatform(1200, groundY - 600, 400);
+	createPlatform(1700, groundY - 350, 400);
+	createPlatform(2200, groundY - 500, 400);
+	createPlatform(2600, groundY - 800, 400);
+	// Coins
+	createCoin(800, groundY - 420);
+	createCoin(1300, groundY - 670);
+	createCoin(1750, groundY - 420);
+	createCoin(2250, groundY - 570);
+	createCoin(2650, groundY - 870);
+	// Enemies
+	createEnemy(1100, groundY - 160);
+	createEnemy(2000, groundY - 160);
+	createEnemy(2500, groundY - 860);
+	// End flag (invisible, just a platform at far right)
+	createPlatform(3000, groundY - 200, 200);
+}
+// --- Collision detection ---
+function rectsIntersect(a, b) {
+	return a.x - a.width * 0.5 < b.x + b.width * 0.5 && a.x + a.width * 0.5 > b.x - b.width * 0.5 && a.y - a.height < b.y && a.y > b.y - b.height;
+}
+// --- Touch controls ---
+// Touch anywhere to jump
+game.down = function (x, y, obj) {
+	if (isGameOver || isYouWin) return;
+	player.jump();
+};
+// --- Main game update loop ---
+game.update = function () {
+	if (isGameOver || isYouWin) return;
+	// Update player
+	player.update();
+	// Camera: keep player at 1/3 of screen, scroll world
+	var cameraX = player.x - 600;
+	if (cameraX < 0) cameraX = 0;
+	// Update platforms
+	for (var i = platforms.length - 1; i >= 0; i--) {
+		var plat = platforms[i];
+		plat.update();
+		// Remove platforms that are off screen
+		if (plat.x + plat.width < cameraX - 200) {
+			plat.destroy();
+			platforms.splice(i, 1);
+		}
+	}
+	// Update coins
+	for (var i = coins.length - 1; i >= 0; i--) {
+		var coin = coins[i];
+		coin.update();
+		// Remove coins that are off screen
+		if (coin.x < cameraX - 200) {
+			coin.destroy();
+			coins.splice(i, 1);
+			continue;
+		}
+		// Collect coin
+		if (rectsIntersect(player, coin)) {
+			score += 1;
+			LK.setScore(score);
+			scoreTxt.setText(score);
+			coin.destroy();
+			coins.splice(i, 1);
+		}
+	}
+	// Update enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		enemy.update();
+		// Remove enemies that are off screen
+		if (enemy.x < cameraX - 200) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+			continue;
+		}
+		// Player hits enemy (from above)
+		if (rectsIntersect(player, enemy) && player.vy > 0 && player.y - player.height < enemy.y - enemy.height + 30) {
+			// Defeat enemy
+			enemy.destroy();
+			enemies.splice(i, 1);
+			score += 5;
+			LK.setScore(score);
+			scoreTxt.setText(score);
+			player.vy = -jumpStrength * 0.7; // Bounce
+		}
+		// Player collides with enemy (side or bottom)
+		else if (rectsIntersect(player, enemy)) {
+			loseLife();
+		}
+	}
+	// Platform collision (only check platforms under player)
+	var onPlatform = false;
+	for (var i = 0; i < platforms.length; i++) {
+		var plat = platforms[i];
+		// Check if player is falling and above platform
+		if (player.vy >= 0 && player.x + player.width * 0.4 > plat.x && player.x - player.width * 0.4 < plat.x + plat.width && player.y > plat.y - 10 && player.y < plat.y + 40) {
+			// Land on platform
+			player.y = plat.y;
+			player.vy = 0;
+			player.isOnGround = true;
+			player.isJumping = false;
+			onPlatform = true;
+			break;
+		}
+	}
+	if (!onPlatform && player.y < groundY) {
+		player.isOnGround = false;
+	}
+	// Check for falling off screen
+	if (player.y > 2732 + 200) {
+		loseLife();
+	}
+	// Check for level end (reaching far right)
+	if (player.x > 3200) {
+		// Win!
+		isYouWin = true;
+		LK.showYouWin();
+	}
+};
+// Lose a life and handle game over
+function loseLife() {
+	if (isGameOver) return;
+	lives -= 1;
+	if (lives < 0) lives = 0;
+	var livesStr = '';
+	for (var i = 0; i < lives; i++) livesStr += '♥';
+	livesTxt.setText(livesStr);
+	// Flash screen red
+	LK.effects.flashScreen(0xff0000, 800);
+	if (lives <= 0) {
+		isGameOver = true;
+		LK.showGameOver();
+	} else {
+		// Reset player position
+		player.x = 300;
+		player.y = groundY;
+		player.vx = scrollSpeed;
+		player.vy = 0;
+	}
+}
+// --- Start game ---
+resetGame();
\ No newline at end of file