/**** 
* 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.velocityY = 0;
	self.gravity = 0.5;
	self.jumpPower = -35;
	self.speed = 4;
	self.lastY = 0;
	self.lastIntersecting1 = false;
	self.lastIntersecting2 = false;
	self.jump = function () {
		if (!isPressed) {
			self.velocityY = self.jumpPower;
			LK.getSound('engine').play();
		}
		isPressed = true;
	};
	self.update = function () {
		self.lastY = self.y;
		// Apply gravity only when not continuously pressed
		if (!isPressed) {
			self.velocityY += self.gravity;
		} else {
			// Fly straight when continuously pressed
			self.velocityY = 0;
		}
		self.y += self.velocityY;
		// Keep airplane level at all times
		airplaneGraphics.rotation = 0;
		// Keep airplane within bounds - only lower bound
		if (self.y > 2600) {
			self.y = 2600;
			self.velocityY = 0;
		}
	};
	return self;
});
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('tower', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	return self;
});

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

/**** 
* Game Code
****/ 
// Create a simple blue background
game.setBackgroundColor(0x4169E1);
// Add ground
var ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0.5,
	anchorY: 1.0
}));
ground.x = 1024;
ground.y = 2732;
// Add sun
var sun = game.addChild(LK.getAsset('sun', {
	anchorX: 0.5,
	anchorY: 0.5
}));
sun.x = 1800;
sun.y = 200;
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0x000000
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var airplane = game.addChild(new Airplane());
airplane.x = 200;
airplane.y = 1366;
var tower1 = game.addChild(new Tower());
tower1.x = -1000; // Start towers off-screen
tower1.y = 2732;
var tower2 = game.addChild(new Tower());
tower2.x = -1000; // Start towers off-screen
tower2.y = 2732;
var score = 0;
var gameSpeed = 15;
var isPressed = false;
var touchX = 0;
var touchY = 0;
var isTouching = false;
var clouds = [];
// Create clouds in the sky
for (var i = 0; i < 4; i++) {
	var cloud = game.addChild(LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	cloud.x = Math.random() * 3000 + 500;
	cloud.y = Math.random() * 800 + 200;
	cloud.alpha = 0.7;
	cloud.speed = Math.random() * 2 + 1;
	clouds.push(cloud);
}
var joystickCenter = {
	x: 300,
	y: 2400
};
// Add joystick visual elements
var joystickBase = game.addChild(LK.getAsset('joystick_base', {
	anchorX: 0.5,
	anchorY: 0.5
}));
joystickBase.x = joystickCenter.x;
joystickBase.y = joystickCenter.y;
joystickBase.alpha = 0.6;
var joystickKnob = game.addChild(LK.getAsset('joystick_knob', {
	anchorX: 0.5,
	anchorY: 0.5
}));
joystickKnob.x = joystickCenter.x;
joystickKnob.y = joystickCenter.y;
joystickKnob.alpha = 0.8;
function updateScore() {
	scoreTxt.setText('Score: ' + score);
}
function checkCollisions() {
	// More precise collision detection - check if airplane nose penetrates tower
	// Calculate airplane nose position (front edge)
	var airplaneNoseX = airplane.x + 200; // Airplane nose is about 200px from center
	var airplaneLeftWing = airplane.x - 200; // Left wing edge
	var airplaneRightWing = airplane.x + 200; // Right wing edge
	var airplaneTop = airplane.y - 125; // Top of airplane
	var airplaneBottom = airplane.y + 125; // Bottom of airplane
	// Check tower1 collision - more precise detection
	var tower1Left = tower1.x - 50; // Tower width consideration
	var tower1Right = tower1.x + 50;
	var tower1Top = tower1.y - 1500; // Tower height
	var tower1Bottom = tower1.y;
	var currentIntersecting1 = airplaneNoseX >= tower1Left && airplaneLeftWing <= tower1Right && airplaneBottom >= tower1Top && airplaneTop <= tower1Bottom;
	// Check tower2 collision - more precise detection  
	var tower2Left = tower2.x - 50; // Tower width consideration
	var tower2Right = tower2.x + 50;
	var tower2Top = tower2.y - 1500; // Tower height
	var tower2Bottom = tower2.y;
	var currentIntersecting2 = airplaneNoseX >= tower2Left && airplaneLeftWing <= tower2Right && airplaneBottom >= tower2Top && airplaneTop <= tower2Bottom;
	if (!airplane.lastIntersecting1 && currentIntersecting1 || !airplane.lastIntersecting2 && currentIntersecting2) {
		// Just hit a tower - create bomb explosion effect
		LK.getSound('crash').play();
		// Flash the airplane red for explosion effect
		LK.effects.flashObject(airplane, 0xff0000, 500);
		// Create multiple explosion circles for bomb effect at airplane position
		var explosionCircles = [];
		for (var i = 0; i < 12; i++) {
			var circle = game.addChild(LK.getAsset('explosion_circle', {
				anchorX: 0.5,
				anchorY: 0.5
			}));
			circle.x = airplane.x + (Math.random() - 0.5) * 300;
			circle.y = airplane.y + (Math.random() - 0.5) * 300;
			circle.alpha = 0.8;
			circle.tint = i % 2 === 0 ? 0xff4500 : 0xffa500; // Alternate between orange and yellow
			explosionCircles.push(circle);
			// Animate each circle expanding and fading
			tween(circle, {
				scaleX: 8 + Math.random() * 4,
				scaleY: 8 + Math.random() * 4,
				alpha: 0
			}, {
				duration: 400 + Math.random() * 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					circle.destroy();
				}
			});
		}
		// Screen shake effect using tween
		tween(game, {
			x: 10
		}, {
			duration: 50,
			onFinish: function onFinish() {
				tween(game, {
					x: -10
				}, {
					duration: 50,
					onFinish: function onFinish() {
						tween(game, {
							x: 5
						}, {
							duration: 50,
							onFinish: function onFinish() {
								tween(game, {
									x: 0
								}, {
									duration: 50,
									onFinish: function onFinish() {
										// Show game over after explosion effects complete
										LK.showGameOver();
									}
								});
							}
						});
					}
				});
			}
		});
	}
	airplane.lastIntersecting1 = currentIntersecting1;
	airplane.lastIntersecting2 = currentIntersecting2;
	// Check if airplane passed towers for scoring
	if (airplane.lastX < tower1.x && airplane.x >= tower1.x) {
		score += 10;
		updateScore();
	}
	if (airplane.lastX < tower2.x && airplane.x >= tower2.x) {
		score += 10;
		updateScore();
	}
}
game.down = function (x, y, obj) {
	// Only respond to touches in the joystick area
	var distanceFromJoystick = Math.sqrt((x - joystickCenter.x) * (x - joystickCenter.x) + (y - joystickCenter.y) * (y - joystickCenter.y));
	if (distanceFromJoystick <= 150) {
		touchX = x;
		touchY = y;
		isTouching = true;
		airplane.jump();
	}
};
game.move = function (x, y, obj) {
	if (isTouching) {
		touchX = x;
		touchY = y;
	}
};
game.up = function (x, y, obj) {
	isPressed = false;
	isTouching = false;
};
game.update = function () {
	airplane.lastX = airplane.x;
	// Initialize towers after some delay (when airplane moves forward)
	if (LK.ticks > 180) {
		// 3 seconds delay (60 FPS * 3)
		if (tower1.x < 0) {
			tower1.x = 2200;
		}
		if (tower2.x < 0) {
			tower2.x = 25600; // 25x farther spacing between towers
		}
	}
	// Move towers left for side-scrolling effect
	if (tower1.x > 0) {
		tower1.x -= gameSpeed;
	}
	if (tower2.x > 0) {
		tower2.x -= gameSpeed;
	}
	// Reset tower positions when they go off-screen
	if (tower1.x < -100) {
		tower1.x = 25600; // 25x farther spacing
	}
	if (tower2.x < -100) {
		tower2.x = 51200; // Maintain 25x farther spacing
	}
	checkCollisions();
	// Move clouds slowly across the sky
	for (var i = 0; i < clouds.length; i++) {
		clouds[i].x -= clouds[i].speed;
		// Reset cloud position when it goes off-screen
		if (clouds[i].x < -200) {
			clouds[i].x = 2300;
			clouds[i].y = Math.random() * 800 + 200;
		}
	}
	// Joystick control - move airplane vertically only
	if (isTouching) {
		var deltaY = touchY - joystickCenter.y;
		// Limit joystick knob movement vertically only
		var maxRange = 100;
		if (deltaY > maxRange) {
			deltaY = maxRange;
		} else if (deltaY < -maxRange) {
			deltaY = -maxRange;
		}
		// Update joystick knob position - vertical movement only
		joystickKnob.x = joystickCenter.x;
		joystickKnob.y = joystickCenter.y + deltaY;
		// Move airplane vertically based on joystick input
		var moveScale = 4;
		var targetY = 1366 - deltaY * moveScale; // Inverted Y-axis
		// Keep airplane within screen bounds vertically
		airplane.y = Math.max(-500, Math.min(2632, targetY));
	} else {
		// Reset joystick knob to center when not touching
		joystickKnob.x = joystickCenter.x;
		joystickKnob.y = joystickCenter.y;
	}
	// Keep airplane centered horizontally at all times
	airplane.x = 1024;
	// Win condition
	if (score >= 100) {
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -90,12 +90,12 @@
 var airplane = game.addChild(new Airplane());
 airplane.x = 200;
 airplane.y = 1366;
 var tower1 = game.addChild(new Tower());
-tower1.x = 2200;
+tower1.x = -1000; // Start towers off-screen
 tower1.y = 2732;
 var tower2 = game.addChild(new Tower());
-tower2.x = 25600; // 25x farther spacing between towers (half of previous)
+tower2.x = -1000; // Start towers off-screen
 tower2.y = 2732;
 var score = 0;
 var gameSpeed = 15;
 var isPressed = false;
@@ -252,11 +252,25 @@
 	isTouching = false;
 };
 game.update = function () {
 	airplane.lastX = airplane.x;
+	// Initialize towers after some delay (when airplane moves forward)
+	if (LK.ticks > 180) {
+		// 3 seconds delay (60 FPS * 3)
+		if (tower1.x < 0) {
+			tower1.x = 2200;
+		}
+		if (tower2.x < 0) {
+			tower2.x = 25600; // 25x farther spacing between towers
+		}
+	}
 	// Move towers left for side-scrolling effect
-	tower1.x -= gameSpeed;
-	tower2.x -= gameSpeed;
+	if (tower1.x > 0) {
+		tower1.x -= gameSpeed;
+	}
+	if (tower2.x > 0) {
+		tower2.x -= gameSpeed;
+	}
 	// Reset tower positions when they go off-screen
 	if (tower1.x < -100) {
 		tower1.x = 25600; // 25x farther spacing
 	}