===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,254 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Bird class
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach a yellow ellipse as the bird
+	var birdAsset = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Bird physics
+	self.velocity = 0; // vertical speed
+	self.gravity = 1.2; // gravity per frame
+	self.flapStrength = -22; // negative for upward movement
+	// Bird size for collision
+	self.radius = birdAsset.width * 0.45;
+	// Flap method
+	self.flap = function () {
+		self.velocity = self.flapStrength;
+	};
+	// Update method (called every tick)
+	self.update = function () {
+		self.velocity += self.gravity;
+		self.y += self.velocity;
+		// Clamp rotation for visual feedback (optional)
+		var maxAngle = Math.PI / 4;
+		var minAngle = -Math.PI / 3;
+		var angle = self.velocity / 30 * maxAngle;
+		if (angle > maxAngle) angle = maxAngle;
+		if (angle < minAngle) angle = minAngle;
+		birdAsset.rotation = angle;
+	};
+	return self;
+});
+// PipePair class (top and bottom pipes as a pair)
+var PipePair = Container.expand(function () {
+	var self = Container.call(this);
+	// Pipe dimensions
+	var pipeWidth = 220;
+	var gapHeight = 520; // vertical gap between pipes
+	// Randomize gap position
+	var minY = 400;
+	var maxY = 2732 - 400 - gapHeight;
+	var gapY = minY + Math.floor(Math.random() * (maxY - minY + 1));
+	// Top pipe
+	var topPipe = self.attachAsset('pipe', {
+		width: pipeWidth,
+		height: gapY,
+		color: 0x4ec04e,
+		shape: 'box',
+		anchorX: 0,
+		anchorY: 1,
+		x: 0,
+		y: gapY
+	});
+	// Bottom pipe
+	var bottomPipe = self.attachAsset('pipe', {
+		width: pipeWidth,
+		height: 2732 - (gapY + gapHeight),
+		color: 0x4ec04e,
+		shape: 'box',
+		anchorX: 0,
+		anchorY: 0,
+		x: 0,
+		y: gapY + gapHeight
+	});
+	// For scoring: has the bird passed this pipe?
+	self.passed = false;
+	// Move pipes leftward
+	self.speed = 14;
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	// For collision detection, expose gapY and gapHeight
+	self.gapY = gapY;
+	self.gapHeight = gapHeight;
+	self.pipeWidth = pipeWidth;
+	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 smooth animations (optional, but included for future polish)
+// --- Game constants ---
+var BIRD_START_X = 600;
+var BIRD_START_Y = 1366;
+var PIPE_INTERVAL = 90; // frames between pipes
+var GROUND_HEIGHT = 180;
+// --- Game state ---
+var bird;
+var pipes = [];
+var score = 0;
+var scoreTxt;
+var gameStarted = false;
+var gameOver = false;
+var lastPipeTick = 0;
+// --- Asset initialization (shapes) ---
+// --- Add ground (for collision) ---
+var ground = LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 2732 - GROUND_HEIGHT
+});
+game.addChild(ground);
+// --- Add bird ---
+bird = new Bird();
+bird.x = BIRD_START_X;
+bird.y = BIRD_START_Y;
+game.addChild(bird);
+// --- Score display ---
+scoreTxt = new Text2('0', {
+	size: 180,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// --- Start instructions (centered) ---
+var startTxt = new Text2('Tap to Flap!', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+startTxt.anchor.set(0.5, 0.5);
+LK.gui.center.addChild(startTxt);
+// --- Helper: Reset game state ---
+function resetGame() {
+	// Remove pipes
+	for (var i = 0; i < pipes.length; i++) {
+		pipes[i].destroy();
+	}
+	pipes = [];
+	// Reset bird
+	bird.x = BIRD_START_X;
+	bird.y = BIRD_START_Y;
+	bird.velocity = 0;
+	// Reset score
+	score = 0;
+	scoreTxt.setText('0');
+	// Reset state
+	gameStarted = false;
+	gameOver = false;
+	lastPipeTick = LK.ticks;
+	// Show start text
+	startTxt.visible = true;
+}
+// --- Helper: Check collision between bird and pipes/ground ---
+function checkCollision() {
+	// Bird with ground
+	if (bird.y + bird.radius >= 2732 - GROUND_HEIGHT) {
+		return true;
+	}
+	// Bird with ceiling
+	if (bird.y - bird.radius <= 0) {
+		return true;
+	}
+	// Bird with pipes
+	for (var i = 0; i < pipes.length; i++) {
+		var pipe = pipes[i];
+		// Pipe bounds
+		var px = pipe.x;
+		var pw = pipe.pipeWidth;
+		var gapY = pipe.gapY;
+		var gapH = pipe.gapHeight;
+		// Bird's bounding box
+		var bx = bird.x;
+		var by = bird.y;
+		var br = bird.radius;
+		// Check horizontal overlap
+		if (bx + br > px && bx - br < px + pw) {
+			// Check if bird is NOT in the gap
+			if (by - br < gapY || by + br > gapY + gapH) {
+				return true;
+			}
+		}
+	}
+	return false;
+}
+// --- Helper: Update score if bird passes pipes ---
+function updateScore() {
+	for (var i = 0; i < pipes.length; i++) {
+		var pipe = pipes[i];
+		if (!pipe.passed && bird.x > pipe.x + pipe.pipeWidth) {
+			pipe.passed = true;
+			score += 1;
+			scoreTxt.setText(score + '');
+		}
+	}
+}
+// --- Game tap/flap handler ---
+function onFlap() {
+	if (gameOver) return;
+	if (!gameStarted) {
+		gameStarted = true;
+		startTxt.visible = false;
+	}
+	bird.flap();
+}
+// --- Touch/click events ---
+game.down = function (x, y, obj) {
+	onFlap();
+};
+// --- Main game loop ---
+game.update = function () {
+	if (gameOver) return;
+	// Only update bird and pipes if game started
+	if (gameStarted) {
+		bird.update();
+		// Add new pipes at intervals
+		if (LK.ticks - lastPipeTick >= PIPE_INTERVAL) {
+			var pipe = new PipePair();
+			pipe.x = 2048;
+			game.addChild(pipe);
+			pipes.push(pipe);
+			lastPipeTick = LK.ticks;
+		}
+		// Update pipes and remove off-screen ones
+		for (var i = pipes.length - 1; i >= 0; i--) {
+			var pipe = pipes[i];
+			pipe.update();
+			if (pipe.x + pipe.pipeWidth < 0) {
+				pipe.destroy();
+				pipes.splice(i, 1);
+			}
+		}
+		// Update score
+		updateScore();
+		// Check for collision
+		if (checkCollision()) {
+			gameOver = true;
+			LK.effects.flashScreen(0xff0000, 800);
+			LK.showGameOver();
+		}
+	}
+};
+// --- Reset game on game over (handled by LK) ---
+LK.on('gameover', function () {
+	resetGame();
+});
+// --- Initial reset ---
+resetGame();
\ No newline at end of file