===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,567 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Bird class
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	// Bird type: 'red', 'blue', 'yellow'
+	self.type = 'red';
+	self.isLaunched = false;
+	self.isActive = false;
+	self.velocity = {
+		x: 0,
+		y: 0
+	};
+	self.radius = 60; // default, will be set by asset
+	self.gravity = 1.2;
+	self.friction = 0.995;
+	self.bounce = 0.45;
+	self.hasAbility = false; // For future bird abilities
+	// Attach asset based on type
+	function setAsset() {
+		var assetId = 'birdRed';
+		if (self.type === 'blue') assetId = 'birdBlue';
+		if (self.type === 'yellow') assetId = 'birdYellow';
+		var asset = self.attachAsset(assetId, {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		self.radius = asset.width / 2;
+	}
+	self.setType = function (type) {
+		self.type = type;
+		setAsset();
+	};
+	setAsset();
+	// Called every tick
+	self.update = function () {
+		if (!self.isLaunched) return;
+		// Physics
+		self.velocity.y += self.gravity;
+		self.x += self.velocity.x;
+		self.y += self.velocity.y;
+		self.velocity.x *= self.friction;
+		self.velocity.y *= self.friction;
+		// Ground collision
+		if (self.y + self.radius > groundY) {
+			self.y = groundY - self.radius;
+			if (Math.abs(self.velocity.y) > 2) {
+				self.velocity.y *= -self.bounce;
+				self.velocity.x *= self.friction;
+			} else {
+				self.velocity.y = 0;
+				self.velocity.x *= 0.95;
+				if (Math.abs(self.velocity.x) < 1) {
+					self.velocity.x = 0;
+					self.isActive = false;
+				}
+			}
+		}
+	};
+	// Ability placeholder (for future expansion)
+	self.activateAbility = function () {
+		// e.g. blue splits, yellow speeds up
+		// Not implemented in MVP
+	};
+	return self;
+});
+// Block class
+var Block = Container.expand(function () {
+	var self = Container.call(this);
+	self.type = 'wood'; // 'wood', 'stone', 'glass'
+	self.width = 180;
+	self.height = 60;
+	self.isStatic = false;
+	self.health = 2;
+	self.velocity = {
+		x: 0,
+		y: 0
+	};
+	self.gravity = 1.2;
+	self.friction = 0.98;
+	self.bounce = 0.2;
+	function setAsset() {
+		var assetId = 'blockWood';
+		if (self.type === 'stone') assetId = 'blockStone';
+		if (self.type === 'glass') assetId = 'blockGlass';
+		var asset = self.attachAsset(assetId, {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		self.width = asset.width;
+		self.height = asset.height;
+	}
+	self.setType = function (type) {
+		self.type = type;
+		setAsset();
+		if (type === 'wood') self.health = 2;
+		if (type === 'stone') self.health = 4;
+		if (type === 'glass') self.health = 1;
+	};
+	setAsset();
+	self.update = function () {
+		if (self.isStatic) return;
+		self.velocity.y += self.gravity;
+		self.x += self.velocity.x;
+		self.y += self.velocity.y;
+		self.velocity.x *= self.friction;
+		self.velocity.y *= self.friction;
+		// Ground collision
+		if (self.y + self.height / 2 > groundY) {
+			self.y = groundY - self.height / 2;
+			if (Math.abs(self.velocity.y) > 2) {
+				self.velocity.y *= -self.bounce;
+				self.velocity.x *= self.friction;
+			} else {
+				self.velocity.y = 0;
+				self.velocity.x *= 0.95;
+				if (Math.abs(self.velocity.x) < 0.5) {
+					self.velocity.x = 0;
+				}
+			}
+		}
+	};
+	self.hit = function (force) {
+		self.health -= force;
+		if (self.health <= 0) {
+			LK.getSound('blockBreak').play();
+			tween(self, {
+				alpha: 0
+			}, {
+				duration: 200,
+				onFinish: function onFinish() {
+					self.destroy();
+				}
+			});
+		}
+	};
+	return self;
+});
+// Pig class
+var Pig = Container.expand(function () {
+	var self = Container.call(this);
+	var asset = self.attachAsset('pig', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = asset.width / 2;
+	self.isAlive = true;
+	self.health = 1; // For MVP, 1 hit = dead
+	self.hit = function (force) {
+		if (!self.isAlive) return;
+		self.health -= 1;
+		if (self.health <= 0) {
+			self.isAlive = false;
+			LK.getSound('pigPop').play();
+			tween(self, {
+				alpha: 0
+			}, {
+				duration: 300,
+				onFinish: function onFinish() {
+					self.destroy();
+				}
+			});
+		}
+	};
+	return self;
+});
+// Slingshot class
+var Slingshot = Container.expand(function () {
+	var self = Container.call(this);
+	// Base
+	var base = self.attachAsset('slingshotBase', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	// Band (drawn dynamically in game code)
+	self.band = LK.getAsset('slingshotBand', {
+		anchorX: 0.5,
+		anchorY: 0
+	});
+	self.band.visible = false;
+	self.addChild(self.band);
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
+	backgroundColor: 0x87ceeb // Sky blue
+});
+
+/**** 
+* Game Code
+****/ 
+// Music
+// Sounds
+// Ground
+// Blocks
+// Slingshot
+// Pigs
+// Birds
+// --- Global variables ---
+var groundY = 2732 - 80; // y position of ground
+var birds = [];
+var pigs = [];
+var blocks = [];
+var currentBird = null;
+var slingshot = null;
+var isDragging = false;
+var dragStart = {
+	x: 0,
+	y: 0
+};
+var dragEnd = {
+	x: 0,
+	y: 0
+};
+var maxDragDist = 350;
+var shotsLeft = 0;
+var level = 1;
+var score = 0;
+var scoreTxt = null;
+var shotsTxt = null;
+var levelTxt = null;
+var ground = null;
+var bandStart = {
+	x: 0,
+	y: 0
+};
+var bandEnd = {
+	x: 0,
+	y: 0
+};
+var bandVisible = false;
+var winTimeout = null;
+// --- GUI ---
+scoreTxt = new Text2('Score: 0', {
+	size: 90,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+shotsTxt = new Text2('Birds: 0', {
+	size: 70,
+	fill: "#fff"
+});
+shotsTxt.anchor.set(0.5, 0);
+LK.gui.topRight.addChild(shotsTxt);
+levelTxt = new Text2('Level 1', {
+	size: 70,
+	fill: "#fff"
+});
+levelTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(levelTxt);
+// --- Ground ---
+ground = LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0
+});
+ground.x = 0;
+ground.y = groundY;
+game.addChild(ground);
+// --- Slingshot ---
+slingshot = new Slingshot();
+slingshot.x = 350;
+slingshot.y = groundY;
+game.addChild(slingshot);
+// --- Level Setup ---
+function setupLevel(lvl) {
+	// Clear previous
+	for (var i = birds.length - 1; i >= 0; i--) {
+		birds[i].destroy();
+		birds.splice(i, 1);
+	}
+	for (var i = pigs.length - 1; i >= 0; i--) {
+		pigs[i].destroy();
+		pigs.splice(i, 1);
+	}
+	for (var i = blocks.length - 1; i >= 0; i--) {
+		blocks[i].destroy();
+		blocks.splice(i, 1);
+	}
+	if (currentBird) {
+		currentBird.destroy();
+		currentBird = null;
+	}
+	if (winTimeout) {
+		LK.clearTimeout(winTimeout);
+		winTimeout = null;
+	}
+	// Level text
+	levelTxt.setText('Level ' + lvl);
+	// Birds for this level
+	var birdTypes = ['red', 'red', 'blue', 'yellow'];
+	if (lvl === 1) birdTypes = ['red', 'red', 'red'];
+	if (lvl === 2) birdTypes = ['red', 'blue', 'red'];
+	if (lvl === 3) birdTypes = ['red', 'blue', 'yellow', 'red'];
+	if (lvl > 3) birdTypes = ['red', 'blue', 'yellow', 'red', 'blue'];
+	shotsLeft = birdTypes.length;
+	shotsTxt.setText('Birds: ' + shotsLeft);
+	for (var i = 0; i < birdTypes.length; i++) {
+		var b = new Bird();
+		b.setType(birdTypes[i]);
+		b.x = 200 - i * 60;
+		b.y = groundY - 60;
+		birds.push(b);
+		game.addChild(b);
+	}
+	// Pigs and blocks arrangement
+	// Level 1: 2 pigs, 2 wood blocks
+	// Level 2: 3 pigs, 2 wood, 2 stone
+	// Level 3: 4 pigs, 2 wood, 2 stone, 2 glass
+	// Level 4+: 5 pigs, 3 wood, 3 stone, 2 glass
+	var pigCount = Math.min(2 + lvl, 5);
+	var blockCount = Math.min(2 + lvl, 8);
+	// Place pigs
+	for (var i = 0; i < pigCount; i++) {
+		var p = new Pig();
+		p.x = 1200 + i * 120;
+		p.y = groundY - 90 - i % 2 * 80;
+		pigs.push(p);
+		game.addChild(p);
+	}
+	// Place blocks
+	for (var i = 0; i < blockCount; i++) {
+		var bl = new Block();
+		if (i % 3 === 0) bl.setType('wood');else if (i % 3 === 1) bl.setType('stone');else bl.setType('glass');
+		bl.x = 1150 + i % 5 * 120;
+		bl.y = groundY - 60 - Math.floor(i / 5) * 80;
+		blocks.push(bl);
+		game.addChild(bl);
+	}
+	// Place first bird on slingshot
+	nextBird();
+}
+// --- Bird Launching ---
+function nextBird() {
+	if (currentBird) {
+		currentBird.destroy();
+		currentBird = null;
+	}
+	if (birds.length === 0) {
+		// Out of birds, check for loss
+		checkWinOrLose();
+		return;
+	}
+	currentBird = birds.shift();
+	currentBird.x = slingshot.x;
+	currentBird.y = slingshot.y - 80;
+	currentBird.isLaunched = false;
+	currentBird.isActive = false;
+	currentBird.velocity = {
+		x: 0,
+		y: 0
+	};
+	shotsLeft = birds.length + 1;
+	shotsTxt.setText('Birds: ' + shotsLeft);
+	bandVisible = false;
+	slingshot.band.visible = false;
+}
+// --- Drag and Launch ---
+game.down = function (x, y, obj) {
+	// Only allow drag if current bird is not launched and touch is near bird
+	if (!currentBird || currentBird.isLaunched) return;
+	var dx = x - currentBird.x;
+	var dy = y - currentBird.y;
+	var dist = Math.sqrt(dx * dx + dy * dy);
+	if (dist < currentBird.radius + 40) {
+		isDragging = true;
+		dragStart.x = x;
+		dragStart.y = y;
+		dragEnd.x = x;
+		dragEnd.y = y;
+		bandVisible = true;
+		slingshot.band.visible = true;
+	}
+};
+game.move = function (x, y, obj) {
+	if (!isDragging || !currentBird || currentBird.isLaunched) return;
+	// Limit drag distance
+	var dx = x - slingshot.x;
+	var dy = y - (slingshot.y - 80);
+	var dist = Math.sqrt(dx * dx + dy * dy);
+	if (dist > maxDragDist) {
+		var ratio = maxDragDist / dist;
+		dx *= ratio;
+		dy *= ratio;
+	}
+	dragEnd.x = slingshot.x + dx;
+	dragEnd.y = slingshot.y - 80 + dy;
+	currentBird.x = dragEnd.x;
+	currentBird.y = dragEnd.y;
+	// Update band
+	bandStart.x = slingshot.x;
+	bandStart.y = slingshot.y - 80;
+	bandEnd.x = currentBird.x;
+	bandEnd.y = currentBird.y;
+	updateBand();
+};
+game.up = function (x, y, obj) {
+	if (!isDragging || !currentBird || currentBird.isLaunched) return;
+	isDragging = false;
+	bandVisible = false;
+	slingshot.band.visible = false;
+	// Calculate launch velocity
+	var dx = slingshot.x - currentBird.x;
+	var dy = slingshot.y - 80 - currentBird.y;
+	var power = Math.sqrt(dx * dx + dy * dy);
+	var maxPower = 32;
+	var minPower = 8;
+	var scale = Math.min(maxPower, Math.max(minPower, power / 10));
+	currentBird.velocity.x = dx / 10 * scale / 10;
+	currentBird.velocity.y = dy / 10 * scale / 10;
+	currentBird.isLaunched = true;
+	currentBird.isActive = true;
+	LK.getSound('birdLaunch').play();
+};
+// --- Band Drawing ---
+function updateBand() {
+	if (!bandVisible) {
+		slingshot.band.visible = false;
+		return;
+	}
+	var dx = bandEnd.x - bandStart.x;
+	var dy = bandEnd.y - bandStart.y;
+	var dist = Math.sqrt(dx * dx + dy * dy);
+	slingshot.band.height = dist;
+	slingshot.band.rotation = Math.atan2(dy, dx) - Math.PI / 2;
+	slingshot.band.x = bandStart.x;
+	slingshot.band.y = bandStart.y;
+	slingshot.band.visible = true;
+}
+// --- Physics and Collisions ---
+function checkCollisions() {
+	// Bird with blocks
+	if (currentBird && currentBird.isLaunched && currentBird.isActive) {
+		for (var i = blocks.length - 1; i >= 0; i--) {
+			var bl = blocks[i];
+			if (!bl) continue;
+			// AABB collision
+			var bx = bl.x,
+				by = bl.y,
+				bw = bl.width,
+				bh = bl.height;
+			var cx = currentBird.x,
+				cy = currentBird.y,
+				cr = currentBird.radius;
+			if (cx + cr > bx - bw / 2 && cx - cr < bx + bw / 2 && cy + cr > by - bh / 2 && cy - cr < by + bh / 2) {
+				// Hit!
+				var force = Math.max(1, Math.abs(currentBird.velocity.x) + Math.abs(currentBird.velocity.y)) / 8;
+				bl.hit(force);
+				// Bounce bird
+				if (Math.abs(currentBird.velocity.x) > Math.abs(currentBird.velocity.y)) {
+					currentBird.velocity.x *= -0.5;
+				} else {
+					currentBird.velocity.y *= -0.5;
+				}
+			}
+		}
+		// Bird with pigs
+		for (var i = pigs.length - 1; i >= 0; i--) {
+			var p = pigs[i];
+			if (!p || !p.isAlive) continue;
+			var dx = currentBird.x - p.x;
+			var dy = currentBird.y - p.y;
+			var dist = Math.sqrt(dx * dx + dy * dy);
+			if (dist < currentBird.radius + p.radius - 10) {
+				// Hit!
+				p.hit(1);
+				score += 500;
+				scoreTxt.setText('Score: ' + score);
+				// Bounce bird
+				currentBird.velocity.x *= -0.5;
+				currentBird.velocity.y *= -0.5;
+			}
+		}
+	}
+	// Blocks with pigs
+	for (var i = blocks.length - 1; i >= 0; i--) {
+		var bl = blocks[i];
+		if (!bl) continue;
+		for (var j = pigs.length - 1; j >= 0; j--) {
+			var p = pigs[j];
+			if (!p || !p.isAlive) continue;
+			var bx = bl.x,
+				by = bl.y,
+				bw = bl.width,
+				bh = bl.height;
+			var px = p.x,
+				py = p.y,
+				pr = p.radius;
+			if (px + pr > bx - bw / 2 && px - pr < bx + bw / 2 && py + pr > by - bh / 2 && py - pr < by + bh / 2) {
+				// Hit!
+				p.hit(1);
+				score += 500;
+				scoreTxt.setText('Score: ' + score);
+			}
+		}
+	}
+}
+// --- Win/Lose Check ---
+function checkWinOrLose() {
+	// Win: all pigs dead
+	var pigsLeft = 0;
+	for (var i = 0; i < pigs.length; i++) {
+		if (pigs[i] && pigs[i].isAlive) pigsLeft++;
+	}
+	if (pigsLeft === 0) {
+		// Win!
+		score += shotsLeft * 1000;
+		scoreTxt.setText('Score: ' + score);
+		winTimeout = LK.setTimeout(function () {
+			LK.showYouWin();
+		}, 1200);
+		return;
+	}
+	// Lose: no birds left and pigs remain
+	if (birds.length === 0 && (!currentBird || !currentBird.isActive)) {
+		winTimeout = LK.setTimeout(function () {
+			LK.showGameOver();
+		}, 1200);
+	}
+}
+// --- Main Update ---
+game.update = function () {
+	// Update birds
+	if (currentBird) currentBird.update();
+	for (var i = 0; i < birds.length; i++) birds[i].update();
+	// Update blocks
+	for (var i = 0; i < blocks.length; i++) blocks[i].update();
+	// Check collisions
+	checkCollisions();
+	// Remove dead pigs/blocks
+	for (var i = pigs.length - 1; i >= 0; i--) {
+		if (pigs[i] && !pigs[i].isAlive) {
+			pigs.splice(i, 1);
+		}
+	}
+	for (var i = blocks.length - 1; i >= 0; i--) {
+		if (blocks[i] && blocks[i].health <= 0) {
+			blocks.splice(i, 1);
+		}
+	}
+	// If bird is stopped, go to next bird
+	if (currentBird && currentBird.isLaunched && !currentBird.isActive) {
+		nextBird();
+		checkWinOrLose();
+	}
+};
+// --- Start Game ---
+score = 0;
+scoreTxt.setText('Score: 0');
+setupLevel(level);
+// --- Music ---
+LK.playMusic('bgmusic', {
+	fade: {
+		start: 0,
+		end: 0.7,
+		duration: 1000
+	}
 });
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