===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,429 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
+
+/**** 
+* Classes
+****/ 
+// Enemy class (moves left/right)
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var en = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 3 + Math.random() * 2;
+	self.direction = Math.random() < 0.5 ? 1 : -1;
+	self.range = 300 + Math.random() * 200;
+	self.originX = 0;
+	self.update = function () {
+		self.x += self.speed * self.direction;
+		if (Math.abs(self.x - self.originX) > self.range) {
+			self.direction *= -1;
+		}
+	};
+	return self;
+});
+// Football class (follows player or can be dropped)
+var Football = Container.expand(function () {
+	var self = Container.call(this);
+	var fb = self.attachAsset('football', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.carried = true;
+	self.vx = 0;
+	self.vy = 0;
+	self.update = function () {
+		if (!self.carried) {
+			// Gravity
+			self.vy += 2.5;
+			self.x += self.vx;
+			self.y += self.vy;
+			// Collide with platforms
+			for (var i = 0; i < platforms.length; ++i) {
+				var p = platforms[i];
+				if (self.intersects(p) && self.vy > 0) {
+					self.y = p.y - p.height / 2 - self.height / 2;
+					self.vy = 0;
+				}
+			}
+			// Clamp to ground
+			if (self.y > 2732 - 40) {
+				self.y = 2732 - 40;
+				self.vy = 0;
+			}
+		}
+	};
+	return self;
+});
+// Goal class
+var Goal = Container.expand(function () {
+	var self = Container.call(this);
+	var g = self.attachAsset('goal', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	return self;
+});
+// Hazard class
+var Hazard = Container.expand(function () {
+	var self = Container.call(this);
+	var hz = self.attachAsset('hazard', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+// Platform class
+var Platform = Container.expand(function () {
+	var self = Container.call(this);
+	var plat = self.attachAsset('platform', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+// Player class
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var pl = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.vx = 0;
+	self.vy = 0;
+	self.onGround = false;
+	self.carrying = true;
+	self.update = function () {
+		// Apply gravity
+		self.vy += 3.5;
+		// Move
+		self.x += self.vx;
+		self.y += self.vy;
+		// Clamp to world bounds
+		if (self.x < self.width / 2) self.x = self.width / 2;
+		if (self.x > 2048 - self.width / 2) self.x = 2048 - self.width / 2;
+		if (self.y > 2732 - 40) {
+			self.y = 2732 - 40;
+			self.vy = 0;
+			self.onGround = true;
+		}
+		// Collide with platforms
+		self.onGround = false;
+		for (var i = 0; i < platforms.length; ++i) {
+			var p = platforms[i];
+			if (self.intersects(p) && self.vy > 0) {
+				self.y = p.y - p.height / 2 - self.height / 2;
+				self.vy = 0;
+				self.onGround = true;
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x222244
+});
+
+/**** 
+* Game Code
+****/ 
+// Football (ellipse), Player (box), Enemy (box), Platform (box), Goal (box), Hazard (box)
+// Level data (platforms, hazards, enemies)
+var level = 1;
+if (storage.level) level = storage.level;
+var platforms = [];
+var hazards = [];
+var enemies = [];
+var player = null;
+var football = null;
+var goal = null;
+var dragging = false;
+var dragStartX = 0;
+var dragStartY = 0;
+var moveDir = 0; // -1 left, 1 right, 0 none
+var jumpQueued = false;
+var infoText = null;
+var levelText = null;
+var carryingBall = true;
+var canPickupBall = false;
+var lastGoalIntersect = false;
+var lastEnemyIntersect = false;
+var lastHazardIntersect = false;
+var lastFootballIntersect = false;
+var lastFootballGoalIntersect = false;
+var lastFootballHazardIntersect = false;
+var lastFootballEnemyIntersect = false;
+// GUI: Level display
+levelText = new Text2('Level ' + level, {
+	size: 90,
+	fill: '#fff'
+});
+levelText.anchor.set(0.5, 0);
+LK.gui.top.addChild(levelText);
+// GUI: Info text
+infoText = new Text2('', {
+	size: 70,
+	fill: '#fff'
+});
+infoText.anchor.set(0.5, 0);
+LK.gui.bottom.addChild(infoText);
+// Helper: Reset level
+function setupLevel() {
+	// Clear old
+	for (var i = 0; i < platforms.length; ++i) platforms[i].destroy();
+	for (var i = 0; i < hazards.length; ++i) hazards[i].destroy();
+	for (var i = 0; i < enemies.length; ++i) enemies[i].destroy();
+	if (player) player.destroy();
+	if (football) football.destroy();
+	if (goal) goal.destroy();
+	platforms = [];
+	hazards = [];
+	enemies = [];
+	player = null;
+	football = null;
+	goal = null;
+	carryingBall = true;
+	canPickupBall = false;
+	lastGoalIntersect = false;
+	lastEnemyIntersect = false;
+	lastHazardIntersect = false;
+	lastFootballIntersect = false;
+	lastFootballGoalIntersect = false;
+	lastFootballHazardIntersect = false;
+	lastFootballEnemyIntersect = false;
+	// Level layout
+	// Start platform
+	var plat = new Platform();
+	plat.x = 200;
+	plat.y = 2500;
+	game.addChild(plat);
+	platforms.push(plat);
+	// Middle platforms
+	var platCount = 4 + level;
+	for (var i = 0; i < platCount; ++i) {
+		var p = new Platform();
+		p.x = 400 + i * 350 + Math.random() * 80;
+		p.y = 2500 - i * 350 + Math.random() * 60;
+		game.addChild(p);
+		platforms.push(p);
+		// Hazards
+		if (level > 1 && Math.random() < 0.4) {
+			var hz = new Hazard();
+			hz.x = p.x + (Math.random() < 0.5 ? -1 : 1) * 100;
+			hz.y = p.y - 40;
+			game.addChild(hz);
+			hazards.push(hz);
+		}
+		// Enemies
+		if (level > 1 && Math.random() < 0.5) {
+			var en = new Enemy();
+			en.x = p.x;
+			en.y = p.y - 100;
+			en.originX = en.x;
+			game.addChild(en);
+			enemies.push(en);
+		}
+	}
+	// Goal
+	goal = new Goal();
+	goal.x = platforms[platforms.length - 1].x + 300;
+	goal.y = platforms[platforms.length - 1].y - 60;
+	game.addChild(goal);
+	// Player
+	player = new Player();
+	player.x = plat.x;
+	player.y = plat.y - 120;
+	game.addChild(player);
+	// Football
+	football = new Football();
+	football.x = player.x;
+	football.y = player.y - 100;
+	football.carried = true;
+	game.addChild(football);
+	// GUI
+	levelText.setText('Level ' + level);
+	infoText.setText('Drag to move, tap to jump');
+}
+// Touch controls
+game.down = function (x, y, obj) {
+	// If tap below half screen, jump
+	if (y > 2732 / 2) {
+		jumpQueued = true;
+		return;
+	}
+	// Else, drag to move
+	dragging = true;
+	dragStartX = x;
+	dragStartY = y;
+	moveDir = 0;
+};
+game.move = function (x, y, obj) {
+	if (dragging) {
+		var dx = x - dragStartX;
+		if (Math.abs(dx) > 30) {
+			moveDir = dx > 0 ? 1 : -1;
+		} else {
+			moveDir = 0;
+		}
+	}
+};
+game.up = function (x, y, obj) {
+	dragging = false;
+	moveDir = 0;
+};
+// Main update loop
+game.update = function () {
+	// Player movement
+	if (moveDir !== 0) {
+		player.vx = 14 * moveDir;
+	} else {
+		player.vx *= 0.7;
+		if (Math.abs(player.vx) < 1) player.vx = 0;
+	}
+	// Jump
+	if (jumpQueued && player.onGround) {
+		player.vy = -55 - 4 * level;
+		jumpQueued = false;
+	}
+	jumpQueued = false;
+	// Update player, football, enemies
+	player.update();
+	football.update();
+	for (var i = 0; i < enemies.length; ++i) enemies[i].update();
+	// Carry football
+	if (football.carried) {
+		football.x = player.x;
+		football.y = player.y - player.height / 2 - football.height / 2 + 20;
+		football.vx = 0;
+		football.vy = 0;
+	}
+	// Football pickup
+	var footballNear = player.intersects(football);
+	if (!football.carried && footballNear && !carryingBall) {
+		carryingBall = true;
+		football.carried = true;
+		infoText.setText('Ball picked up!');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+	}
+	// Football drop on enemy/hazard
+	var hitEnemy = false;
+	for (var i = 0; i < enemies.length; ++i) {
+		if (player.intersects(enemies[i]) && football.carried) hitEnemy = true;
+	}
+	var hitHazard = false;
+	for (var i = 0; i < hazards.length; ++i) {
+		if (player.intersects(hazards[i]) && football.carried) hitHazard = true;
+	}
+	if ((hitEnemy || hitHazard) && football.carried) {
+		football.carried = false;
+		carryingBall = false;
+		football.vx = player.vx * 0.7;
+		football.vy = -20;
+		infoText.setText('You dropped the ball!');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+		LK.effects.flashObject(player, 0xff0000, 600);
+	}
+	// Football collides with hazard/enemy: reset to start
+	var fbHitHazard = false;
+	for (var i = 0; i < hazards.length; ++i) {
+		if (football.intersects(hazards[i]) && !football.carried) fbHitHazard = true;
+	}
+	var fbHitEnemy = false;
+	for (var i = 0; i < enemies.length; ++i) {
+		if (football.intersects(enemies[i]) && !football.carried) fbHitEnemy = true;
+	}
+	if ((fbHitHazard || fbHitEnemy) && !football.carried) {
+		// Reset football to start
+		football.x = platforms[0].x;
+		football.y = platforms[0].y - 100;
+		football.vx = 0;
+		football.vy = 0;
+		infoText.setText('Ball reset!');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+	}
+	// Win condition: player+football at goal
+	var atGoal = player.intersects(goal);
+	var fbAtGoal = football.intersects(goal);
+	if (atGoal && football.carried && fbAtGoal) {
+		// Next level
+		infoText.setText('Touchdown! Next level...');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+		level += 1;
+		storage.level = level;
+		LK.setTimeout(setupLevel, 1200);
+		return;
+	}
+	// Lose condition: player falls off
+	if (player.y > 2732 - 10) {
+		LK.effects.flashScreen(0xff0000, 1000);
+		infoText.setText('You fell! Try again.');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+		LK.setTimeout(setupLevel, 1200);
+		return;
+	}
+	// Lose condition: football lost off screen
+	if (football.y > 2732 - 10) {
+		infoText.setText('Ball lost! Try again.');
+		tween(infoText, {
+			alpha: 0
+		}, {
+			duration: 1200,
+			onFinish: function onFinish() {
+				infoText.setText('');
+				infoText.alpha = 1;
+			}
+		});
+		LK.setTimeout(setupLevel, 1200);
+		return;
+	}
+};
+// Start first level
+setupLevel();
\ No newline at end of file