/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0
});

/**** 
* Classes
****/ 
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var cloudShape = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8
	});
	self.speed = 0.5 + Math.random() * 0.5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -cloudShape.width) {
			self.x = 2048 + cloudShape.width;
			self.y = 100 + Math.random() * 500;
		}
	};
	return self;
});
var Kingfisher = Container.expand(function () {
	var self = Container.call(this);
	// Bird body
	var body = self.attachAsset('kingfisher', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Bird properties
	self.velocity = 0;
	self.gravity = 0.5;
	self.flapPower = -12;
	self.rotation = 0;
	self.alive = true;
	self.flap = function () {
		if (!self.alive) {
			return;
		}
		self.velocity = self.flapPower;
		LK.getSound('flap').play();
		// Wing flap animation
		tween(self, {
			scaleY: 0.7
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(self, {
					scaleY: 1
				}, {
					duration: 200
				});
			}
		});
	};
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Apply gravity
		self.velocity += self.gravity;
		self.y += self.velocity;
		// Rotate based on velocity
		var targetRotation = self.velocity * 0.03;
		targetRotation = Math.max(Math.min(targetRotation, Math.PI / 4), -Math.PI / 4);
		self.rotation += (targetRotation - self.rotation) * 0.1;
		// Boundaries
		if (self.y < 100) {
			self.y = 100;
			self.velocity = 0;
		}
		if (self.y > 2732 - 250) {
			self.die();
		}
	};
	self.die = function () {
		if (!self.alive) {
			return;
		}
		self.alive = false;
		LK.getSound('hit').play();
		LK.effects.flashObject(self, 0xff0000, 500);
		// Death spin animation
		tween(self, {
			rotation: Math.PI,
			alpha: 0.7
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				LK.showGameOver();
			}
		});
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	// Gap between top and bottom obstacles
	var gap = 500;
	// Top obstacle
	var topObstacle = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 1.0,
		y: 0
	});
	// Bottom obstacle
	var bottomObstacle = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0,
		y: gap
	});
	self.speed = 3;
	self.passed = false;
	self.width = topObstacle.width;
	self.setGapSize = function (size) {
		gap = size;
		bottomObstacle.y = topObstacle.y + gap;
	};
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var bird;
var obstacles = [];
var clouds = [];
var water;
var score = 0;
var highScore = storage.highScore || 0;
var baseObstacleSpeed = 3;
var spawnInterval = 150;
var minGapSize = 400;
var gameStarted = false;
var scoreTxt;
var highScoreTxt;
var instructionsTxt;
// Initialize water (always at bottom of screen)
water = LK.getAsset('water', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 2732 - 500
});
game.addChild(water);
// Initialize clouds
for (var i = 0; i < 5; i++) {
	var cloud = new Cloud();
	cloud.x = Math.random() * 2048;
	cloud.y = 100 + Math.random() * 500;
	clouds.push(cloud);
	game.addChild(cloud);
}
// Initialize bird
bird = new Kingfisher();
bird.x = 400;
bird.y = 2732 / 2;
game.addChild(bird);
// Score text
scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// High score text
highScoreTxt = new Text2('Best: ' + highScore, {
	size: 60,
	fill: 0xFFFFFF
});
highScoreTxt.anchor.set(0.5, 0);
highScoreTxt.y = 130;
LK.gui.top.addChild(highScoreTxt);
// Instructions text
instructionsTxt = new Text2('Tap to flap!', {
	size: 80,
	fill: 0xFFFFFF
});
instructionsTxt.anchor.set(0.5, 0.5);
LK.gui.center.addChild(instructionsTxt);
// Tap to flap function
function handleTap() {
	if (!gameStarted) {
		gameStarted = true;
		instructionsTxt.visible = false;
		LK.playMusic('bgMusic');
	}
	bird.flap();
}
// Obstacle spawning function
function spawnObstacle() {
	var obstacle = new Obstacle();
	// Set position
	obstacle.x = 2048 + obstacle.width;
	// Random vertical position for the gap, keeping it away from the very top and bottom
	var minY = 200;
	var maxY = 2732 - 700 - minGapSize;
	obstacle.y = minY + Math.random() * (maxY - minY);
	// Adjust gap size based on score (gets narrower as score increases)
	var gapSize = minGapSize + 300 - Math.min(200, score * 5);
	obstacle.setGapSize(gapSize);
	// Adjust speed based on score (gets faster as score increases)
	obstacle.speed = baseObstacleSpeed + Math.min(5, score * 0.1);
	obstacles.push(obstacle);
	game.addChild(obstacle);
}
// Handle tap or click
game.down = handleTap;
// Game update loop
game.update = function () {
	// Update clouds
	for (var i = 0; i < clouds.length; i++) {
		clouds[i].update();
	}
	if (!gameStarted) {
		return;
	}
	// Spawn obstacles
	if (LK.ticks % spawnInterval === 0) {
		spawnObstacle();
	}
	// Update obstacles
	for (var j = obstacles.length - 1; j >= 0; j--) {
		var obstacle = obstacles[j];
		obstacle.update();
		// Check if bird passed obstacle
		if (!obstacle.passed && bird.x > obstacle.x + obstacle.width / 2) {
			obstacle.passed = true;
			score++;
			LK.setScore(score);
			scoreTxt.setText(score.toString());
			LK.getSound('score').play();
			// Update high score if needed
			if (score > highScore) {
				highScore = score;
				storage.highScore = highScore;
				highScoreTxt.setText('Best: ' + highScore);
			}
		}
		// Check for collision with bird
		if (bird.alive) {
			var topObstacleBounds = new Rectangle(obstacle.x - obstacle.width / 2, obstacle.y - obstacle.children[0].height, obstacle.width, obstacle.children[0].height);
			var bottomObstacleBounds = new Rectangle(obstacle.x - obstacle.width / 2, obstacle.y + obstacle.children[0].y, obstacle.width, obstacle.children[1].height);
			var birdBounds = new Rectangle(bird.x - 60, bird.y - 40, 120, 80);
			// Check collision with top obstacle
			if (birdBounds.x + birdBounds.width > topObstacleBounds.x && birdBounds.x < topObstacleBounds.x + topObstacleBounds.width && birdBounds.y < topObstacleBounds.y + topObstacleBounds.height) {
				if (birdBounds.y + birdBounds.height > topObstacleBounds.y) {
					bird.die();
				}
			}
			// Check collision with bottom obstacle
			if (birdBounds.x + birdBounds.width > bottomObstacleBounds.x && birdBounds.x < bottomObstacleBounds.x + bottomObstacleBounds.width && birdBounds.y + birdBounds.height > bottomObstacleBounds.y) {
				if (birdBounds.y < bottomObstacleBounds.y + bottomObstacleBounds.height) {
					bird.die();
				}
			}
		}
		// Remove obstacles that are off-screen
		if (obstacle.x < -obstacle.width) {
			obstacle.destroy();
			obstacles.splice(j, 1);
		}
	}
	// Update bird
	bird.update();
};

===================================================================
--- original.js
+++ change.js
@@ -259,14 +259,18 @@
 			var topObstacleBounds = new Rectangle(obstacle.x - obstacle.width / 2, obstacle.y - obstacle.children[0].height, obstacle.width, obstacle.children[0].height);
 			var bottomObstacleBounds = new Rectangle(obstacle.x - obstacle.width / 2, obstacle.y + obstacle.children[0].y, obstacle.width, obstacle.children[1].height);
 			var birdBounds = new Rectangle(bird.x - 60, bird.y - 40, 120, 80);
 			// Check collision with top obstacle
-			if (birdBounds.x + birdBounds.width > topObstacleBounds.x && birdBounds.x < topObstacleBounds.x + topObstacleBounds.width && birdBounds.y < topObstacleBounds.y + topObstacleBounds.height && birdBounds.y + birdBounds.height > topObstacleBounds.y) {
-				bird.die();
+			if (birdBounds.x + birdBounds.width > topObstacleBounds.x && birdBounds.x < topObstacleBounds.x + topObstacleBounds.width && birdBounds.y < topObstacleBounds.y + topObstacleBounds.height) {
+				if (birdBounds.y + birdBounds.height > topObstacleBounds.y) {
+					bird.die();
+				}
 			}
 			// Check collision with bottom obstacle
-			if (birdBounds.x + birdBounds.width > bottomObstacleBounds.x && birdBounds.x < bottomObstacleBounds.x + bottomObstacleBounds.width && birdBounds.y < bottomObstacleBounds.y + bottomObstacleBounds.height && birdBounds.y + birdBounds.height > bottomObstacleBounds.y) {
-				bird.die();
+			if (birdBounds.x + birdBounds.width > bottomObstacleBounds.x && birdBounds.x < bottomObstacleBounds.x + bottomObstacleBounds.width && birdBounds.y + birdBounds.height > bottomObstacleBounds.y) {
+				if (birdBounds.y < bottomObstacleBounds.y + bottomObstacleBounds.height) {
+					bird.die();
+				}
 			}
 		}
 		// Remove obstacles that are off-screen
 		if (obstacle.x < -obstacle.width) {