===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,455 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.velocityX = 3;
+	self.direction = 1;
+	self.startX = 0;
+	self.patrolDistance = 200;
+	self.update = function () {
+		self.x += self.velocityX * self.direction;
+		// Patrol behavior
+		if (Math.abs(self.x - self.startX) > self.patrolDistance) {
+			self.direction *= -1;
+		}
+		// Check collision with hero
+		if (self.intersects(hero)) {
+			// Check if hero jumped on enemy
+			if (hero.velocityY > 0 && hero.y < self.y - 25) {
+				self.defeat();
+				hero.velocityY = -15; // Bounce
+			} else {
+				hero.die();
+			}
+		}
+		// Check collision with projectiles
+		for (var i = projectiles.length - 1; i >= 0; i--) {
+			var projectile = projectiles[i];
+			if (self.intersects(projectile)) {
+				self.defeat();
+				projectile.destroy();
+				projectiles.splice(i, 1);
+				break;
+			}
+		}
+	};
+	self.defeat = function () {
+		LK.setScore(LK.getScore() + 100);
+		scoreText.setText(LK.getScore());
+		LK.getSound('defeat').play();
+		// Remove from enemies array
+		for (var i = enemies.length - 1; i >= 0; i--) {
+			if (enemies[i] === self) {
+				enemies.splice(i, 1);
+				break;
+			}
+		}
+		self.destroy();
+	};
+	return self;
+});
+var Hero = Container.expand(function () {
+	var self = Container.call(this);
+	var heroGraphics = self.attachAsset('hero', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.velocityX = 0;
+	self.velocityY = 0;
+	self.speed = 8;
+	self.jumpPower = -25;
+	self.gravity = 1;
+	self.onGround = false;
+	self.facingRight = true;
+	self.update = function () {
+		// Apply gravity
+		self.velocityY += self.gravity;
+		// Apply velocity
+		self.x += self.velocityX;
+		self.y += self.velocityY;
+		// Apply friction
+		self.velocityX *= 0.8;
+		// Check platform collisions
+		self.onGround = false;
+		for (var i = 0; i < platforms.length; i++) {
+			var platform = platforms[i];
+			if (self.intersects(platform)) {
+				// Landing on top of platform
+				if (self.velocityY > 0 && self.y - 60 < platform.y) {
+					self.y = platform.y;
+					self.velocityY = 0;
+					self.onGround = true;
+				}
+			}
+		}
+		// Keep hero on screen horizontally
+		if (self.x < 30) self.x = 30;
+		if (self.x > 2018) self.x = 2018;
+		// Check if fallen off screen
+		if (self.y > 2800) {
+			self.die();
+		}
+		// Update sprite direction
+		if (self.velocityX > 1 && !self.facingRight) {
+			heroGraphics.scaleX = 1;
+			self.facingRight = true;
+		} else if (self.velocityX < -1 && self.facingRight) {
+			heroGraphics.scaleX = -1;
+			self.facingRight = false;
+		}
+	};
+	self.jump = function () {
+		if (self.onGround) {
+			self.velocityY = self.jumpPower;
+			self.onGround = false;
+			LK.getSound('jump').play();
+		}
+	};
+	self.moveLeft = function () {
+		self.velocityX = -self.speed;
+	};
+	self.moveRight = function () {
+		self.velocityX = self.speed;
+	};
+	self.shoot = function () {
+		var newProjectile = new Projectile();
+		newProjectile.x = self.x;
+		newProjectile.y = self.y - 30;
+		newProjectile.velocityX = self.facingRight ? 15 : -15;
+		projectiles.push(newProjectile);
+		game.addChild(newProjectile);
+	};
+	self.die = function () {
+		lives--;
+		if (lives <= 0) {
+			LK.showGameOver();
+		} else {
+			self.respawn();
+		}
+	};
+	self.respawn = function () {
+		self.x = 200;
+		self.y = 2000;
+		self.velocityX = 0;
+		self.velocityY = 0;
+	};
+	return self;
+});
+var Platform = Container.expand(function (width, height) {
+	var self = Container.call(this);
+	var platformGraphics = self.attachAsset('platform', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		width: width || 300,
+		height: height || 40
+	});
+	return self;
+});
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var powerupGraphics = self.attachAsset('powerup', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.bobOffset = 0;
+	self.startY = 0;
+	self.update = function () {
+		// Bobbing animation
+		self.bobOffset += 0.1;
+		self.y = self.startY + Math.sin(self.bobOffset) * 10;
+		// Check collision with hero
+		if (self.intersects(hero)) {
+			self.collect();
+		}
+	};
+	self.collect = function () {
+		LK.setScore(LK.getScore() + 50);
+		scoreText.setText(LK.getScore());
+		LK.getSound('collect').play();
+		// Remove from powerups array
+		for (var i = powerups.length - 1; i >= 0; i--) {
+			if (powerups[i] === self) {
+				powerups.splice(i, 1);
+				break;
+			}
+		}
+		self.destroy();
+	};
+	return self;
+});
+var Projectile = Container.expand(function () {
+	var self = Container.call(this);
+	var projectileGraphics = self.attachAsset('projectile', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityX = 0;
+	self.velocityY = 0;
+	self.gravity = 0.5;
+	self.update = function () {
+		self.velocityY += self.gravity;
+		self.x += self.velocityX;
+		self.y += self.velocityY;
+		// Remove if off screen
+		if (self.x < -50 || self.x > 2098 || self.y > 2800) {
+			// Remove from projectiles array
+			for (var i = projectiles.length - 1; i >= 0; i--) {
+				if (projectiles[i] === self) {
+					projectiles.splice(i, 1);
+					break;
+				}
+			}
+			self.destroy();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var hero;
+var platforms = [];
+var enemies = [];
+var powerups = [];
+var projectiles = [];
+var lives = 3;
+// UI Elements
+var scoreText = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0, 0);
+scoreText.x = 150;
+scoreText.y = 50;
+LK.gui.topLeft.addChild(scoreText);
+var livesText = new Text2('Lives: 3', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+livesText.anchor.set(1, 0);
+LK.gui.topRight.addChild(livesText);
+// Create hero
+hero = game.addChild(new Hero());
+hero.x = 200;
+hero.y = 2000;
+// Create platforms
+var platformData = [{
+	x: 150,
+	y: 2200,
+	width: 300
+}, {
+	x: 600,
+	y: 2100,
+	width: 200
+}, {
+	x: 1000,
+	y: 2000,
+	width: 250
+}, {
+	x: 1400,
+	y: 1900,
+	width: 300
+}, {
+	x: 1800,
+	y: 1800,
+	width: 200
+}, {
+	x: 300,
+	y: 1700,
+	width: 200
+}, {
+	x: 700,
+	y: 1600,
+	width: 300
+}, {
+	x: 1200,
+	y: 1500,
+	width: 250
+}, {
+	x: 1600,
+	y: 1400,
+	width: 200
+}, {
+	x: 400,
+	y: 1300,
+	width: 300
+}, {
+	x: 900,
+	y: 1200,
+	width: 200
+}, {
+	x: 1300,
+	y: 1100,
+	width: 250
+}, {
+	x: 500,
+	y: 1000,
+	width: 300
+}, {
+	x: 1000,
+	y: 900,
+	width: 400
+}];
+for (var i = 0; i < platformData.length; i++) {
+	var pData = platformData[i];
+	var platform = game.addChild(new Platform(pData.width, 40));
+	platform.x = pData.x;
+	platform.y = pData.y;
+	platforms.push(platform);
+}
+// Create enemies
+var enemyData = [{
+	x: 600,
+	y: 2060,
+	startX: 600
+}, {
+	x: 1000,
+	y: 1960,
+	startX: 1000
+}, {
+	x: 1400,
+	y: 1860,
+	startX: 1400
+}, {
+	x: 700,
+	y: 1560,
+	startX: 700
+}, {
+	x: 1200,
+	y: 1460,
+	startX: 1200
+}, {
+	x: 500,
+	y: 960,
+	startX: 500
+}];
+for (var i = 0; i < enemyData.length; i++) {
+	var eData = enemyData[i];
+	var enemy = game.addChild(new Enemy());
+	enemy.x = eData.x;
+	enemy.y = eData.y;
+	enemy.startX = eData.startX;
+	enemies.push(enemy);
+}
+// Create power-ups
+var powerupData = [{
+	x: 1000,
+	y: 1950
+}, {
+	x: 1800,
+	y: 1750
+}, {
+	x: 300,
+	y: 1650
+}, {
+	x: 1200,
+	y: 1450
+}, {
+	x: 900,
+	y: 1150
+}, {
+	x: 1000,
+	y: 850
+}];
+for (var i = 0; i < powerupData.length; i++) {
+	var pData = powerupData[i];
+	var powerup = game.addChild(new PowerUp());
+	powerup.x = pData.x;
+	powerup.y = pData.y;
+	powerup.startY = pData.y;
+	powerups.push(powerup);
+}
+// Touch controls
+var leftPressed = false;
+var rightPressed = false;
+// Control buttons (invisible touch areas)
+var leftButton = game.addChild(new Container());
+leftButton.x = 0;
+leftButton.y = 2200;
+leftButton.width = 200;
+leftButton.height = 532;
+var rightButton = game.addChild(new Container());
+rightButton.x = 200;
+rightButton.y = 2200;
+rightButton.width = 200;
+rightButton.height = 532;
+var jumpButton = game.addChild(new Container());
+jumpButton.x = 1648;
+jumpButton.y = 2200;
+jumpButton.width = 400;
+jumpButton.height = 532;
+var shootButton = game.addChild(new Container());
+shootButton.x = 1400;
+shootButton.y = 2200;
+shootButton.width = 248;
+shootButton.height = 532;
+leftButton.down = function () {
+	leftPressed = true;
+};
+leftButton.up = function () {
+	leftPressed = false;
+};
+rightButton.down = function () {
+	rightPressed = true;
+};
+rightButton.up = function () {
+	rightPressed = false;
+};
+jumpButton.down = function () {
+	hero.jump();
+};
+shootButton.down = function () {
+	hero.shoot();
+};
+game.update = function () {
+	// Handle continuous movement
+	if (leftPressed) {
+		hero.moveLeft();
+	}
+	if (rightPressed) {
+		hero.moveRight();
+	}
+	// Update lives display
+	livesText.setText('Lives: ' + lives);
+	// Check win condition (reach top platform)
+	if (hero.y < 950 && hero.intersects(platforms[platforms.length - 1])) {
+		LK.showYouWin();
+	}
+	// Clean up destroyed projectiles
+	for (var i = projectiles.length - 1; i >= 0; i--) {
+		if (!projectiles[i].parent) {
+			projectiles.splice(i, 1);
+		}
+	}
+	// Clean up destroyed enemies
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		if (!enemies[i].parent) {
+			enemies.splice(i, 1);
+		}
+	}
+	// Clean up destroyed powerups
+	for (var i = powerups.length - 1; i >= 0; i--) {
+		if (!powerups[i].parent) {
+			powerups.splice(i, 1);
+		}
+	}
+};
\ No newline at end of file