===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,280 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Bird class
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach bird asset (yellow ellipse)
+	var birdAsset = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set initial properties
+	self.vy = 0; // vertical velocity
+	self.gravity = 1.5; // gravity per frame
+	self.flapStrength = -28; // negative for upward movement
+	// Bird update: apply gravity, move, clamp position
+	self.update = function () {
+		self.vy += self.gravity;
+		self.y += self.vy;
+		// Clamp to top of screen
+		if (self.y < self.height / 2) {
+			self.y = self.height / 2;
+			self.vy = 0;
+		}
+	};
+	// Flap: set upward velocity
+	self.flap = function () {
+		self.vy = self.flapStrength;
+	};
+	return self;
+});
+// PipePair class (top and bottom pipes)
+var PipePair = Container.expand(function () {
+	var self = Container.call(this);
+	// Pipe config
+	self.pipeWidth = 220;
+	self.gapHeight = 520;
+	self.speed = 12;
+	// Create top pipe (green box)
+	self.topPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 1,
+		width: self.pipeWidth,
+		height: 900
+	});
+	// Create bottom pipe (green box)
+	self.bottomPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 0,
+		width: self.pipeWidth,
+		height: 900
+	});
+	// Set initial positions (will be set by spawn)
+	self.topPipe.x = 0;
+	self.bottomPipe.x = 0;
+	// Used to track if score was already given for this pipe
+	self.passed = false;
+	// Set pipes' vertical positions based on gapY
+	self.setGap = function (gapY) {
+		self.topPipe.y = gapY - self.gapHeight / 2;
+		self.bottomPipe.y = gapY + self.gapHeight / 2;
+	};
+	// Move pipes left
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	// Helper: get bounding rect for collision
+	self.getTopRect = function () {
+		return new Rectangle(self.x - self.pipeWidth / 2, 0, self.pipeWidth, self.topPipe.y);
+	};
+	self.getBottomRect = function () {
+		return new Rectangle(self.x - self.pipeWidth / 2, self.bottomPipe.y, self.pipeWidth, 2732 - self.bottomPipe.y);
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87ceeb // Sky blue
+});
+
+/**** 
+* Game Code
+****/ 
+// --- Game Variables ---
+// --- Asset Initialization ---
+var bird;
+var pipes = [];
+var ground;
+var score = 0;
+var scoreTxt;
+var gameStarted = false;
+var gameOver = false;
+var pipeTimer = null;
+var lastPipeX = 0;
+var nextPipeDist = 0;
+var bestScore = 0;
+// --- GUI Score Display ---
+scoreTxt = new Text2('0', {
+	size: 180,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// --- Best Score Display (top right) ---
+var bestScoreTxt = new Text2('', {
+	size: 60,
+	fill: 0xFFF7B2
+});
+bestScoreTxt.anchor.set(1, 0);
+bestScoreTxt.x = -60;
+bestScoreTxt.y = 30;
+LK.gui.topRight.addChild(bestScoreTxt);
+// --- Ground ---
+ground = LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 0,
+	y: 2732 - 120
+});
+game.addChild(ground);
+// --- Bird ---
+bird = new Bird();
+bird.x = 500;
+bird.y = 2732 / 2;
+game.addChild(bird);
+// --- Reset Game State ---
+function resetGame() {
+	// Remove pipes
+	for (var i = 0; i < pipes.length; i++) {
+		pipes[i].destroy();
+	}
+	pipes = [];
+	// Reset bird
+	bird.x = 500;
+	bird.y = 2732 / 2;
+	bird.vy = 0;
+	// Reset score
+	score = 0;
+	scoreTxt.setText(score);
+	// Reset state
+	gameStarted = false;
+	gameOver = false;
+	// Show best score
+	bestScore = bestScore || 0;
+	bestScoreTxt.setText('Best: ' + bestScore);
+	// Remove pipe timer if any
+	if (pipeTimer) {
+		LK.clearInterval(pipeTimer);
+		pipeTimer = null;
+	}
+}
+// --- Start Game ---
+function startGame() {
+	if (gameStarted) return;
+	gameStarted = true;
+	gameOver = false;
+	score = 0;
+	scoreTxt.setText(score);
+	// Remove pipes
+	for (var i = 0; i < pipes.length; i++) {
+		pipes[i].destroy();
+	}
+	pipes = [];
+	// Reset bird
+	bird.x = 500;
+	bird.y = 2732 / 2;
+	bird.vy = 0;
+	// Start pipe spawning
+	spawnPipe();
+	if (pipeTimer) LK.clearInterval(pipeTimer);
+	pipeTimer = LK.setInterval(spawnPipe, 1100);
+}
+// --- End Game ---
+function endGame() {
+	if (gameOver) return;
+	gameOver = true;
+	gameStarted = false;
+	// Stop pipe spawning
+	if (pipeTimer) {
+		LK.clearInterval(pipeTimer);
+		pipeTimer = null;
+	}
+	// Flash screen
+	LK.effects.flashScreen(0xff0000, 600);
+	// Update best score
+	if (score > bestScore) {
+		bestScore = score;
+	}
+	bestScoreTxt.setText('Best: ' + bestScore);
+	// Show game over popup (handled by LK)
+	LK.showGameOver();
+}
+// --- Pipe Spawning ---
+function spawnPipe() {
+	// Gap vertical position: between 400 and (screen height - ground - 400)
+	var minGapY = 400 + 120;
+	var maxGapY = 2732 - 400 - 120 - 120;
+	var gapY = minGapY + Math.floor(Math.random() * (maxGapY - minGapY));
+	var pipePair = new PipePair();
+	pipePair.x = 2048 + pipePair.pipeWidth; // Spawn just off right edge
+	pipePair.setGap(gapY);
+	game.addChild(pipePair);
+	pipes.push(pipePair);
+}
+// --- Collision Detection ---
+function rectsIntersect(ax, ay, aw, ah, bx, by, bw, bh) {
+	return ax < bx + bw && ax + aw > bx && ay < by + bh && ay + ah > by;
+}
+// --- Game Update Loop ---
+game.update = function () {
+	if (!gameStarted) return;
+	// Bird update
+	bird.update();
+	// Ground collision
+	if (bird.y + bird.height / 2 >= 2732 - 120) {
+		bird.y = 2732 - 120 - bird.height / 2;
+		endGame();
+		return;
+	}
+	// Pipe update and collision
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		var pipe = pipes[i];
+		pipe.update();
+		// Remove pipes off screen
+		if (pipe.x < -pipe.pipeWidth) {
+			pipe.destroy();
+			pipes.splice(i, 1);
+			continue;
+		}
+		// Collision with pipes
+		// Bird bounding box
+		var bx = bird.x - bird.width / 2 + 18;
+		var by = bird.y - bird.height / 2 + 18;
+		var bw = bird.width - 36;
+		var bh = bird.height - 36;
+		// Top pipe
+		var topRect = pipe.getTopRect();
+		if (rectsIntersect(bx, by, bw, bh, topRect.x, topRect.y, topRect.width, topRect.height)) {
+			endGame();
+			return;
+		}
+		// Bottom pipe
+		var bottomRect = pipe.getBottomRect();
+		if (rectsIntersect(bx, by, bw, bh, bottomRect.x, bottomRect.y, bottomRect.width, bottomRect.height)) {
+			endGame();
+			return;
+		}
+		// Score: if bird passed pipe center and not yet scored
+		if (!pipe.passed && pipe.x + pipe.pipeWidth / 2 < bird.x - bird.width / 2) {
+			pipe.passed = true;
+			score += 1;
+			scoreTxt.setText(score);
+		}
+	}
+};
+// --- Tap/Touch Controls ---
+game.down = function (x, y, obj) {
+	if (gameOver) {
+		resetGame();
+		return;
+	}
+	if (!gameStarted) {
+		startGame();
+	}
+	bird.flap();
+};
+// --- Reset on Game Over ---
+LK.on('gameover', function () {
+	resetGame();
+});
+// --- Initial State ---
+resetGame();
\ No newline at end of file