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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.3;
	self.flapPower = -18;
	self.rotation = 0;
	// Start continuous wing flapping animation
	self.startWingAnimation = function () {
		// Create a continuous flapping animation by scaling the bird
		function flapUp() {
			tween(birdGraphics, {
				scaleY: 1.2
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: flapDown
			});
		}
		function flapDown() {
			tween(birdGraphics, {
				scaleY: 0.8
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: flapUp
			});
		}
		// Start the animation cycle
		flapUp();
	};
	// Start wing animation immediately
	self.startWingAnimation();
	self.flap = function () {
		self.velocity = self.flapPower;
		LK.getSound('flap').play();
	};
	self.update = function () {
		self.velocity += self.gravity;
		self.y += self.velocity;
		// Check ground collision
		if (self.y > 2732 - 150) {
			self.y = 2732 - 150;
			gameOver = true;
		}
		// Check ceiling collision
		if (self.y < 50) {
			self.y = 50;
			gameOver = true;
		}
	};
	return self;
});
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	self.gapSize = 750;
	self.speed = -2;
	self.scored = false;
	// Create top pipe
	self.topPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Create bottom pipe
	self.bottomPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0
	});
	self.setGapPosition = function (gapY) {
		self.topPipe.y = gapY - self.gapSize / 2;
		self.bottomPipe.y = gapY + self.gapSize / 2;
	};
	self.update = function () {
		self.x += self.speed;
		// Check if bird passed through pipe
		if (!self.scored && self.x < bird.x) {
			self.scored = true;
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			LK.getSound('score').play();
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var bird;
var pipes = [];
var ground;
var scoreTxt;
var gameOver = false;
var gameStarted = false;
var pipeSpawnTimer = 0;
var pipeSpawnInterval = 180; // frames between pipe spawns
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 1,
	x: 0,
	y: 2732
}));
// Create bird
bird = game.addChild(new Bird());
bird.x = 300;
bird.y = 2732 / 2;
// Create score text
scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Create instruction text
var instructionTxt = new Text2('TAP TO START', {
	size: 60,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
LK.gui.center.addChild(instructionTxt);
function spawnPipe() {
	var pipe = new Pipe();
	pipe.x = 2048 + 60;
	// Random gap position between 200 and 2532 (accounting for gap size)
	var gapY = 200 + Math.random() * (2532 - 400);
	pipe.setGapPosition(gapY);
	pipes.push(pipe);
	game.addChild(pipe);
}
function checkCollisions() {
	for (var i = 0; i < pipes.length; i++) {
		var pipe = pipes[i];
		// Check collision with top pipe
		if (bird.intersects(pipe.topPipe)) {
			gameOver = true;
			LK.getSound('hit').play();
			return;
		}
		// Check collision with bottom pipe
		if (bird.intersects(pipe.bottomPipe)) {
			gameOver = true;
			LK.getSound('hit').play();
			return;
		}
	}
}
function checkSeasonChange() {
	// Change to night theme when score reaches 10
	if (LK.getScore() >= 10) {
		game.setBackgroundColor(0x1a1a2e); // Dark night blue
	} else {
		game.setBackgroundColor(0x87CEEB); // Day sky blue
	}
}
function cleanupPipes() {
	for (var i = pipes.length - 1; i >= 0; i--) {
		var pipe = pipes[i];
		if (pipe.x < -100) {
			pipe.destroy();
			pipes.splice(i, 1);
		}
	}
}
game.down = function (x, y, obj) {
	if (gameOver) {
		return;
	}
	if (!gameStarted) {
		gameStarted = true;
		instructionTxt.visible = false;
	}
	bird.flap();
};
game.update = function () {
	if (gameOver) {
		LK.showGameOver();
		return;
	}
	if (!gameStarted) {
		return;
	}
	// Update bird
	// Spawn pipes
	pipeSpawnTimer++;
	if (pipeSpawnTimer >= pipeSpawnInterval) {
		spawnPipe();
		pipeSpawnTimer = 0;
	}
	// Check collisions
	checkCollisions();
	// Check for season changes
	checkSeasonChange();
	// Cleanup off-screen pipes
	cleanupPipes();
};

===================================================================
--- original.js
+++ change.js
@@ -11,58 +11,29 @@
 	var birdGraphics = self.attachAsset('bird', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	// Add wings
-	var leftWing = self.attachAsset('wing', {
-		anchorX: 0.8,
-		anchorY: 0.5,
-		x: -30,
-		y: -10
-	});
-	var rightWing = self.attachAsset('wing', {
-		anchorX: 0.2,
-		anchorY: 0.5,
-		x: 30,
-		y: -10
-	});
 	self.velocity = 0;
 	self.gravity = 0.3;
 	self.flapPower = -18;
 	self.rotation = 0;
 	// Start continuous wing flapping animation
 	self.startWingAnimation = function () {
-		// Create wing flapping animation
+		// Create a continuous flapping animation by scaling the bird
 		function flapUp() {
-			tween(leftWing, {
-				rotation: -0.5,
+			tween(birdGraphics, {
 				scaleY: 1.2
 			}, {
-				duration: 120,
-				easing: tween.easeOut
-			});
-			tween(rightWing, {
-				rotation: 0.5,
-				scaleY: 1.2
-			}, {
-				duration: 120,
+				duration: 150,
 				easing: tween.easeOut,
 				onFinish: flapDown
 			});
 		}
 		function flapDown() {
-			tween(leftWing, {
-				rotation: 0.3,
+			tween(birdGraphics, {
 				scaleY: 0.8
 			}, {
-				duration: 120,
-				easing: tween.easeOut
-			});
-			tween(rightWing, {
-				rotation: -0.3,
-				scaleY: 0.8
-			}, {
-				duration: 120,
+				duration: 150,
 				easing: tween.easeOut,
 				onFinish: flapUp
 			});
 		}
@@ -184,16 +155,24 @@
 			gameOver = true;
 			LK.getSound('hit').play();
 			return;
 		}
-		// Check collision with bottom pipe  
+		// Check collision with bottom pipe
 		if (bird.intersects(pipe.bottomPipe)) {
 			gameOver = true;
 			LK.getSound('hit').play();
 			return;
 		}
 	}
 }
+function checkSeasonChange() {
+	// Change to night theme when score reaches 10
+	if (LK.getScore() >= 10) {
+		game.setBackgroundColor(0x1a1a2e); // Dark night blue
+	} else {
+		game.setBackgroundColor(0x87CEEB); // Day sky blue
+	}
+}
 function cleanupPipes() {
 	for (var i = pipes.length - 1; i >= 0; i--) {
 		var pipe = pipes[i];
 		if (pipe.x < -100) {
@@ -228,7 +207,9 @@
 		pipeSpawnTimer = 0;
 	}
 	// Check collisions
 	checkCollisions();
+	// Check for season changes
+	checkSeasonChange();
 	// Cleanup off-screen pipes
 	cleanupPipes();
 };
\ No newline at end of file