/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// ✅ UPDATED BIRD (SMOOTH MOTION)
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityY = 0;
	self.gravity = 0.4;
	self.jumpPower = -15;
	self.maxFallSpeed = 20;
	// Smooth rotation settings
	self.rotationSmooth = 0.1;
	self.maxRotationDown = 1.2;
	self.maxRotationUp = -0.5;
	self.jump = function () {
		self.velocityY = self.jumpPower;
		// instant tilt upward
		birdGraphics.rotation = -0.3;
		LK.getSound('jump').play();
	};
	self.update = function () {
		self.velocityY += self.gravity;
		if (self.velocityY > self.maxFallSpeed) {
			self.velocityY = self.maxFallSpeed;
		}
		self.y += self.velocityY;
		// Smooth rotation
		var targetRotation = self.velocityY * 0.05;
		if (targetRotation > self.maxRotationDown) {
			targetRotation = self.maxRotationDown;
		}
		if (targetRotation < self.maxRotationUp) {
			targetRotation = self.maxRotationUp;
		}
		birdGraphics.rotation += (targetRotation - birdGraphics.rotation) * self.rotationSmooth;
	};
	return self;
});
// 🚫 UNCHANGED
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	self.speed = -8;
	self.gapHeight = 500;
	self.pipeWidth = 150;
	self.scored = false;
	var topPipe = self.attachAsset('pipeTop', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var bottomPipe = self.attachAsset('pipeBottom', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setPipeGap = function (gapY) {
		var topPipeHeight = gapY - self.gapHeight / 2;
		var bottomPipeY = gapY + self.gapHeight / 2;
		var bottomPipeHeight = 2732 - bottomPipeY;
		topPipe.height = Math.max(100, topPipeHeight);
		topPipe.y = topPipe.height / 2;
		bottomPipe.height = Math.max(100, bottomPipeHeight);
		bottomPipe.y = bottomPipeY + bottomPipe.height / 2;
	};
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var bird;
var pipes = [];
var gameStarted = false;
var gameOver = false;
var score = 0;
var pipeSpawnTimer = 0;
var pipeSpawnInterval = 120;
var difficultyTimer = 0;
var backgroundGraphic = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
});
game.addChild(backgroundGraphic);
var groundGraphic = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
}));
groundGraphic.y = 2732 - 100;
var scoreTxt = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.setText('0');
LK.gui.top.addChild(scoreTxt);
var startTxt = new Text2('Tap to Start', {
	size: 80,
	fill: 0xFFFFFF
});
startTxt.anchor.set(0.5, 0.5);
startTxt.x = 1024;
startTxt.y = 1366;
game.addChild(startTxt);
function initGame() {
	bird = game.addChild(new Bird());
	bird.x = 300;
	bird.y = 1366;
	bird.velocityY = 0;
	gameStarted = true;
	gameOver = false;
	score = 0;
	pipes = [];
	pipeSpawnTimer = 0;
	difficultyTimer = 0;
	scoreTxt.setText('0');
	startTxt.visible = false;
	LK.playMusic('bgmusic', {
		loop: true
	});
}
function spawnPipe() {
	var minGapY = 300;
	var maxGapY = 2200;
	var gapY = minGapY + Math.random() * (maxGapY - minGapY);
	var pipe = game.addChild(new Pipe());
	pipe.x = 2048 + 100;
	pipe.y = 0;
	pipe.setPipeGap(gapY);
	pipes.push(pipe);
}
game.down = function (x, y, obj) {
	if (!gameStarted) {
		initGame();
	} else if (!gameOver && bird) {
		bird.jump();
	}
};
game.update = function () {
	if (!gameStarted) {
		return;
	}
	if (gameOver) {
		return;
	}
	if (bird) {
		bird.update();
		if (bird.y - 25 < 0 || bird.y + 25 > 2732 - 100) {
			gameOver = true;
			LK.getSound('collision').play();
			LK.showGameOver();
			return;
		}
	}
	pipeSpawnTimer++;
	if (pipeSpawnTimer >= pipeSpawnInterval) {
		spawnPipe();
		pipeSpawnTimer = 0;
	}
	difficultyTimer++;
	if (difficultyTimer > 0 && difficultyTimer % 600 === 0) {
		pipeSpawnInterval = Math.max(90, pipeSpawnInterval - 5);
	}
	for (var i = pipes.length - 1; i >= 0; i--) {
		var pipe = pipes[i];
		pipe.update();
		if (bird && bird.intersects(pipe)) {
			gameOver = true;
			LK.getSound('collision').play();
			LK.showGameOver();
			return;
		}
		if (bird && !pipe.scored && bird.x > pipe.x) {
			pipe.scored = true;
			score++;
			LK.setScore(score);
			scoreTxt.setText(String(score));
		}
		if (pipe.x < -200) {
			pipe.destroy();
			pipes.splice(i, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -5,37 +5,52 @@
 
 /**** 
 * Classes
 ****/ 
+// ✅ UPDATED BIRD (SMOOTH MOTION)
 var Bird = Container.expand(function () {
 	var self = Container.call(this);
 	var birdGraphics = self.attachAsset('bird', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.velocityY = 0;
-	self.gravity = 0.6;
+	self.gravity = 0.4;
 	self.jumpPower = -15;
 	self.maxFallSpeed = 20;
+	// Smooth rotation settings
+	self.rotationSmooth = 0.1;
+	self.maxRotationDown = 1.2;
+	self.maxRotationUp = -0.5;
 	self.jump = function () {
 		self.velocityY = self.jumpPower;
+		// instant tilt upward
+		birdGraphics.rotation = -0.3;
 		LK.getSound('jump').play();
 	};
 	self.update = function () {
 		self.velocityY += self.gravity;
 		if (self.velocityY > self.maxFallSpeed) {
 			self.velocityY = self.maxFallSpeed;
 		}
 		self.y += self.velocityY;
-		var rotation = Math.min(self.velocityY * 0.05, 0.5);
-		birdGraphics.rotation = rotation;
+		// Smooth rotation
+		var targetRotation = self.velocityY * 0.05;
+		if (targetRotation > self.maxRotationDown) {
+			targetRotation = self.maxRotationDown;
+		}
+		if (targetRotation < self.maxRotationUp) {
+			targetRotation = self.maxRotationUp;
+		}
+		birdGraphics.rotation += (targetRotation - birdGraphics.rotation) * self.rotationSmooth;
 	};
 	return self;
 });
+// 🚫 UNCHANGED
 var Pipe = Container.expand(function () {
 	var self = Container.call(this);
 	self.speed = -8;
-	self.gapHeight = 200;
+	self.gapHeight = 500;
 	self.pipeWidth = 150;
 	self.scored = false;
 	var topPipe = self.attachAsset('pipeTop', {
 		anchorX: 0.5,