===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,212 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var DoodleCharacter = Container.expand(function () {
+	var self = Container.call(this);
+	var characterGraphics = self.attachAsset('doodleCharacter', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityY = 0;
+	self.velocityX = 0;
+	self.gravity = 0.4;
+	self.jumpPower = -15;
+	self.isJumping = true;
+	self.maxVelocityX = 8;
+	self.friction = 0.95;
+	self.jump = function () {
+		self.velocityY = self.jumpPower;
+		self.isJumping = true;
+		LK.getSound('jump').play();
+	};
+	self.update = function () {
+		// Apply gravity
+		self.velocityY += self.gravity;
+		// Apply velocities
+		self.y += self.velocityY;
+		self.x += self.velocityX;
+		// Apply friction to horizontal movement
+		self.velocityX *= self.friction;
+		// Wrap around screen horizontally
+		if (self.x < -40) {
+			self.x = 2048 + 40;
+		} else if (self.x > 2048 + 40) {
+			self.x = -40;
+		}
+		// Update jumping state
+		if (self.velocityY > 0) {
+			self.isJumping = true;
+		}
+	};
+	return self;
+});
+var Platform = Container.expand(function (type) {
+	var self = Container.call(this);
+	self.platformType = type || 'normal';
+	self.used = false;
+	self.direction = 1;
+	self.speed = 1;
+	var assetId = 'platform';
+	if (self.platformType === 'breakable') {
+		assetId = 'breakablePlatform';
+	} else if (self.platformType === 'moving') {
+		assetId = 'movingPlatform';
+	}
+	var platformGraphics = self.attachAsset(assetId, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.update = function () {
+		if (self.platformType === 'moving') {
+			self.x += self.direction * self.speed;
+			if (self.x <= 60 || self.x >= 2048 - 60) {
+				self.direction *= -1;
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var doodleCharacter = game.addChild(new DoodleCharacter());
+var platforms = [];
+var cameraY = 0;
+var highestY = 2732;
+var platformSpacing = 200;
+var lastPlatformY = 2732 - 100;
+// Initialize starting platforms
+for (var i = 0; i < 15; i++) {
+	var platformY = 2732 - i * platformSpacing;
+	var platformX = Math.random() * (2048 - 120) + 60;
+	var platformType = 'normal';
+	if (i > 5) {
+		var rand = Math.random();
+		if (rand < 0.15) {
+			platformType = 'breakable';
+		} else if (rand < 0.25) {
+			platformType = 'moving';
+		}
+	}
+	var platform = new Platform(platformType);
+	platform.x = platformX;
+	platform.y = platformY;
+	platforms.push(platform);
+	game.addChild(platform);
+}
+// Position character on first platform
+doodleCharacter.x = platforms[platforms.length - 1].x;
+doodleCharacter.y = platforms[platforms.length - 1].y - 50;
+// Score display
+var scoreTxt = new Text2('0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Control variables
+var isPressingLeft = false;
+var isPressingRight = false;
+// Touch controls
+game.down = function (x, y, obj) {
+	if (x < 2048 / 2) {
+		isPressingLeft = true;
+	} else {
+		isPressingRight = true;
+	}
+};
+game.up = function (x, y, obj) {
+	isPressingLeft = false;
+	isPressingRight = false;
+};
+game.update = function () {
+	// Handle character input
+	if (isPressingLeft) {
+		doodleCharacter.velocityX -= 0.8;
+		if (doodleCharacter.velocityX < -doodleCharacter.maxVelocityX) {
+			doodleCharacter.velocityX = -doodleCharacter.maxVelocityX;
+		}
+	}
+	if (isPressingRight) {
+		doodleCharacter.velocityX += 0.8;
+		if (doodleCharacter.velocityX > doodleCharacter.maxVelocityX) {
+			doodleCharacter.velocityX = doodleCharacter.maxVelocityX;
+		}
+	}
+	// Check platform collisions
+	for (var i = platforms.length - 1; i >= 0; i--) {
+		var platform = platforms[i];
+		// Only check collision when character is falling and above platform
+		if (doodleCharacter.velocityY > 0 && doodleCharacter.y < platform.y && doodleCharacter.y + 40 > platform.y - 10 && doodleCharacter.x > platform.x - 60 && doodleCharacter.x < platform.x + 60) {
+			if (platform.platformType === 'breakable' && !platform.used) {
+				platform.used = true;
+				tween(platform, {
+					alpha: 0,
+					scaleY: 0.1
+				}, {
+					duration: 300,
+					onFinish: function onFinish() {
+						platform.destroy();
+						platforms.splice(platforms.indexOf(platform), 1);
+					}
+				});
+				LK.getSound('break').play();
+			}
+			doodleCharacter.jump();
+			break;
+		}
+	}
+	// Update camera to follow character
+	if (doodleCharacter.y < highestY) {
+		highestY = doodleCharacter.y;
+		var targetCameraY = highestY - 1500;
+		cameraY = targetCameraY;
+		// Move all game objects down relative to camera
+		game.y = -cameraY;
+		// Update score based on height
+		var score = Math.floor((2732 - highestY) / 10);
+		LK.setScore(score);
+		scoreTxt.setText(LK.getScore());
+	}
+	// Generate new platforms as we go higher
+	while (lastPlatformY > highestY - 2000) {
+		lastPlatformY -= platformSpacing;
+		var platformX = Math.random() * (2048 - 120) + 60;
+		var platformType = 'normal';
+		var rand = Math.random();
+		if (rand < 0.2) {
+			platformType = 'breakable';
+		} else if (rand < 0.3) {
+			platformType = 'moving';
+		}
+		var platform = new Platform(platformType);
+		platform.x = platformX;
+		platform.y = lastPlatformY;
+		platforms.push(platform);
+		game.addChild(platform);
+	}
+	// Remove platforms that are too far down
+	for (var j = platforms.length - 1; j >= 0; j--) {
+		if (platforms[j].y > cameraY + 3000) {
+			platforms[j].destroy();
+			platforms.splice(j, 1);
+		}
+	}
+	// Check game over (character fell below screen)
+	if (doodleCharacter.y > cameraY + 2732 + 200) {
+		LK.showGameOver();
+	}
+};
\ No newline at end of file