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

/**** 
* Classes
****/ 
var Airplane = Container.expand(function () {
	var self = Container.call(this);
	var airplaneGraphics = self.attachAsset('airplane', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.6;
	self.jumpPower = -10;
	self.maxVelocity = 12;
	self.update = function () {
		// Apply gravity
		self.velocity += self.gravity;
		// Limit velocity
		if (self.velocity > self.maxVelocity) {
			self.velocity = self.maxVelocity;
		}
		if (self.velocity < -self.maxVelocity) {
			self.velocity = -self.maxVelocity;
		}
		// Update position
		self.y += self.velocity;
		// Rotate airplane based on velocity for visual effect
		airplaneGraphics.rotation = Math.max(-0.5, Math.min(0.5, self.velocity * 0.05));
		// Allow airplane to go off screen (will be caught by game over logic)
	};
	self.jump = function () {
		self.velocity = self.jumpPower;
		LK.getSound('fly').play();
	};
	return self;
});
var Building = Container.expand(function (topHeight, bottomHeight, gapY) {
	var self = Container.call(this);
	var gapSize = 400;
	// Top building
	var topBuilding = self.attachAsset('building', {
		anchorX: 0,
		anchorY: 1,
		scaleY: (gapY - gapSize / 2) / 800
	});
	topBuilding.y = gapY - gapSize / 2; // Position top building at gap start
	// Bottom building
	var bottomBuilding = self.attachAsset('building', {
		anchorX: 0,
		anchorY: 0,
		scaleY: (2732 - (gapY + gapSize / 2)) / 800
	});
	bottomBuilding.y = gapY + gapSize / 2; // Position bottom building at gap end
	self.speed = -4;
	self.passed = false;
	self.update = function () {
		self.x += self.speed;
	};
	self.checkCollision = function (airplane) {
		var airplaneLeft = airplane.x - 50;
		var airplaneRight = airplane.x + 50;
		var airplaneTop = airplane.y - 25;
		var airplaneBottom = airplane.y + 25;
		var buildingLeft = self.x;
		var buildingRight = self.x + 200;
		// Check if airplane is within building's x range
		if (airplaneRight > buildingLeft && airplaneLeft < buildingRight) {
			// Check collision with top building
			if (airplaneTop < topBuilding.y) {
				return true;
			}
			// Check collision with bottom building
			if (airplaneBottom > bottomBuilding.y) {
				return true;
			}
		}
		return false;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB,
	scale: 1.5 // Zoom in by scaling the game container
});

/**** 
* Game Code
****/ 
// Game variables
var airplane;
var buildings = [];
var gameSpeed = 4;
var buildingSpawnTimer = 0;
var buildingSpawnInterval = 120; // frames between buildings
var gameStarted = false;
// UI Elements
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var instructionTxt = new Text2('TAP TO FLY', {
	size: 80,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = 1024;
instructionTxt.y = 1366;
game.addChild(instructionTxt);
// Initialize airplane
airplane = game.addChild(new Airplane());
airplane.x = 400;
airplane.y = 1366;
// Update score display
function updateScore() {
	scoreTxt.setText(LK.getScore());
	if (LK.getScore() % 15 === 0) {
		gameSpeed += 1;
		buildingSpawnInterval = Math.max(80, buildingSpawnInterval - 5);
	}
}
// Spawn new building
function spawnBuilding() {
	var gapY = 1366; // Center gap
	var gapSize = 400; // Total gap size
	var maxBuildingHeight = 1200; // Maximum height for a building
	var minBuildingHeight = 600; // Minimum height for a building
	var topHeight = Math.floor(Math.random() * (maxBuildingHeight - minBuildingHeight + 1)) + minBuildingHeight;
	var bottomHeight = 2732 - gapSize - topHeight;
	var building = new Building(topHeight, bottomHeight, gapY);
	building.x = 2048 + 100; // Start off-screen to the right
	buildings.push(building);
	game.addChild(building);
}
// Game input handling
game.down = function (x, y, obj) {
	if (!gameStarted) {
		gameStarted = true;
		instructionTxt.visible = false;
		// Spawn first building
		spawnBuilding();
	}
	airplane.jump();
};
// Main game loop
game.update = function () {
	if (!gameStarted) return;
	// Update building spawn timer
	buildingSpawnTimer++;
	if (buildingSpawnTimer >= buildingSpawnInterval) {
		buildingSpawnTimer = 0;
		spawnBuilding();
		// Gradually increase difficulty
		if (buildingSpawnInterval > 80) {
			buildingSpawnInterval -= 0.1;
		}
	}
	// Check collisions and update buildings
	for (var i = buildings.length - 1; i >= 0; i--) {
		var building = buildings[i];
		// Check collision
		if (building.checkCollision(airplane)) {
			LK.getSound('crash').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		// Check if airplane passed building (score)
		if (!building.passed && building.x + 200 < airplane.x) {
			building.passed = true;
			LK.setScore(LK.getScore() + 1);
			updateScore();
		}
		// Remove buildings that are off-screen
		if (building.x < -400) {
			building.destroy();
			buildings.splice(i, 1);
		}
	}
	// Check ground and ceiling collision
	if (airplane.y <= 30 || airplane.y >= 2702) {
		LK.getSound('crash').play();
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
		return;
	}
};
// Initialize score display
updateScore();
// Start background music
LK.playMusic('arkaplan');

===================================================================
--- original.js
+++ change.js
@@ -44,16 +44,16 @@
 	// Top building
 	var topBuilding = self.attachAsset('building', {
 		anchorX: 0,
 		anchorY: 1,
-		scaleY: topHeight / 800
+		scaleY: (gapY - gapSize / 2) / 800
 	});
 	topBuilding.y = gapY - gapSize / 2; // Position top building at gap start
 	// Bottom building
 	var bottomBuilding = self.attachAsset('building', {
 		anchorX: 0,
 		anchorY: 0,
-		scaleY: bottomHeight / 800
+		scaleY: (2732 - (gapY + gapSize / 2)) / 800
 	});
 	bottomBuilding.y = gapY + gapSize / 2; // Position bottom building at gap end
 	self.speed = -4;
 	self.passed = false;