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

/**** 
* Classes
****/ 
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	var asteroidGraphics = self.attachAsset('asteroid', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.targetPlanet = null;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		asteroidGraphics.rotation += 0.05;
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Laser = Container.expand(function () {
	var self = Container.call(this);
	var laserGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	laserGraphics.tint = 0x00ff00; // Green laser color
	laserGraphics.scaleX = 0.5; // Make laser thinner
	laserGraphics.scaleY = 2; // Make laser longer
	self.velocityX = 0;
	self.velocityY = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Planet = Container.expand(function (size, color, orbitRadius, orbitSpeed) {
	var self = Container.call(this);
	self.orbitRadius = orbitRadius;
	self.orbitSpeed = orbitSpeed;
	self.angle = Math.random() * Math.PI * 2;
	var assetName = 'mercury';
	if (color === 0x4169e1) assetName = 'earth';else if (color === 0xff4500) assetName = 'mars';else if (color === 0xffc649) assetName = 'venus';else if (color === 0xd2691e) assetName = 'jupiter';else if (color === 0xffd700) assetName = 'saturn';else if (color === 0x40e0d0) assetName = 'uranus';else if (color === 0x4169e1 && size === 85) assetName = 'neptune';
	var planetGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.angle += self.orbitSpeed;
		self.x = sunX + Math.cos(self.angle) * self.orbitRadius;
		self.y = sunY + Math.sin(self.angle) * self.orbitRadius;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011
});

/**** 
* Game Code
****/ 
var sunX = 2048 / 2;
var sunY = 2732 / 2;
var sun = game.addChild(LK.getAsset('sun', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: sunX,
	y: sunY
}));
var planets = [];
var mercury = new Planet(50, 0x8c7853, 150, 0.015);
var venus = new Planet(70, 0xffc649, 200, 0.012);
var earth = new Planet(80, 0x4169e1, 300, 0.008);
var mars = new Planet(60, 0xff4500, 450, 0.005);
var jupiter = new Planet(120, 0xd2691e, 600, 0.003);
var saturn = new Planet(100, 0xffd700, 750, 0.002);
var uranus = new Planet(90, 0x40e0d0, 900, 0.0015);
var neptune = new Planet(85, 0x4169e1, 1050, 0.001);
planets.push(mercury);
planets.push(venus);
planets.push(earth);
planets.push(mars);
planets.push(jupiter);
planets.push(saturn);
planets.push(uranus);
planets.push(neptune);
for (var i = 0; i < planets.length; i++) {
	game.addChild(planets[i]);
}
var bullets = [];
var lasers = [];
var asteroids = [];
var asteroidSpawnTimer = 0;
var lives = 4;
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.x = 0;
LK.gui.top.addChild(scoreTxt);
var livesTxt = new Text2('Lives: 4', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(0.5, 0);
livesTxt.x = 0;
livesTxt.y = 70;
LK.gui.top.addChild(livesTxt);
var defensiveShips = [];
var selectedShipIndex = -1;
var isDragging = false;
var totalShips = 4; // Maximum number of ships
var availableShips = 1; // Start with 1 ship available
var lastScoreCheck = 0; // Track score for adding new ships
// Create 4 defensive ships but only show the available ones
for (var i = 0; i < totalShips; i++) {
	var defensiveShip = LK.getAsset('defensiveShip', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: -80,
		// Position all ships in the same spot in top right corner
		y: 80
	});
	defensiveShip.shipIndex = i;
	defensiveShip.placed = false;
	defensiveShip.selected = false;
	// Only show ships that are available
	defensiveShip.visible = i < availableShips;
	defensiveShips.push(defensiveShip);
	LK.gui.topRight.addChild(defensiveShip);
}
// Add down handler to each defensive ship
for (var i = 0; i < defensiveShips.length; i++) {
	defensiveShips[i].down = function (x, y, obj) {
		var ship = this;
		var shipIndex = ship.shipIndex;
		// Only allow interaction with visible/available ships
		if (!ship.visible) {
			return;
		}
		if (ship.placed) {
			// Ship has been placed, allow selection for shooting
			// Deselect all other ships
			for (var j = 0; j < defensiveShips.length; j++) {
				if (j !== shipIndex && defensiveShips[j].selected) {
					defensiveShips[j].selected = false;
					tween(defensiveShips[j], {
						alpha: 1.0
					}, {
						duration: 200
					});
				}
			}
			if (!ship.selected) {
				ship.selected = true;
				selectedShipIndex = shipIndex;
				tween(ship, {
					alpha: 0.7
				}, {
					duration: 200
				});
			} else {
				ship.selected = false;
				selectedShipIndex = -1;
				tween(ship, {
					alpha: 1.0
				}, {
					duration: 200
				});
			}
			return;
		}
		// Ship not placed yet - immediately start dragging
		// Deselect all other ships
		for (var j = 0; j < defensiveShips.length; j++) {
			if (j !== shipIndex && defensiveShips[j].selected) {
				defensiveShips[j].selected = false;
				tween(defensiveShips[j], {
					alpha: 1.0
				}, {
					duration: 200
				});
			}
		}
		// Start dragging immediately
		isDragging = true;
		selectedShipIndex = shipIndex;
		ship.selected = true;
		// Store original scale before moving
		var originalScaleX = ship.scaleX;
		var originalScaleY = ship.scaleY;
		// No need to shift ships since they're all in the same position
		// Move defensive ship to game area for dragging
		var gamePos = game.toLocal(LK.gui.topRight.toGlobal({
			x: ship.x,
			y: ship.y
		}));
		LK.gui.topRight.removeChild(ship);
		game.addChild(ship);
		ship.x = gamePos.x;
		ship.y = gamePos.y;
		// Restore original scale after moving to game area
		ship.scaleX = originalScaleX;
		ship.scaleY = originalScaleY;
	};
}
game.move = function (x, y, obj) {
	// Move ship to cursor position during dragging
	if (isDragging && selectedShipIndex >= 0) {
		var ship = defensiveShips[selectedShipIndex];
		ship.x = x;
		ship.y = y;
	}
};
game.down = function (x, y, obj) {
	// If a defensive ship is selected and placed, shoot laser at clicked position
	if (selectedShipIndex >= 0 && defensiveShips[selectedShipIndex].placed && defensiveShips[selectedShipIndex].selected) {
		// Make all placed ships fire lasers at the selected point
		for (var k = 0; k < defensiveShips.length; k++) {
			var ship = defensiveShips[k];
			// Only fire from ships that are placed
			if (!ship.placed) {
				continue;
			}
			var laser = new Laser();
			laser.x = ship.x;
			laser.y = ship.y;
			// Calculate direction from this ship to clicked position
			var dx = x - laser.x;
			var dy = y - laser.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// Calculate rotation angle to face the target point
			var targetRotation = Math.atan2(dy, dx) + Math.PI / 2; // Add PI/2 since ship top should face target
			// Rotate the ship to face the target
			tween(ship, {
				rotation: targetRotation
			}, {
				duration: 200,
				easing: tween.easeOut
			});
			var speed = 8;
			if (distance > 0) {
				laser.velocityX = dx / distance * speed;
				laser.velocityY = dy / distance * speed;
			}
			lasers.push(laser);
			game.addChild(laser);
		}
	}
};
game.up = function (x, y, obj) {
	if (isDragging && selectedShipIndex >= 0) {
		isDragging = false;
		// Defensive ship is now placed in the solar system
		var placedShip = defensiveShips[selectedShipIndex];
		// Check if ship is off-screen and needs to be moved back to available ships area
		var shipHalfWidth = 40; // Half width of defensive ship (80/2)
		var shipHalfHeight = 55; // Half height of defensive ship (110/2)
		var isOffScreen = placedShip.x - shipHalfWidth < 0 || placedShip.x + shipHalfWidth > 2048 || placedShip.y - shipHalfHeight < 0 || placedShip.y + shipHalfHeight > 2732;
		if (isOffScreen) {
			// Move ship back to available ships area
			game.removeChild(placedShip);
			LK.gui.topRight.addChild(placedShip);
			// Place ship back at the single spawn position in top right corner
			placedShip.x = -80;
			placedShip.y = 80;
			placedShip.placed = false;
		} else {
			placedShip.placed = true;
		}
		placedShip.selected = false;
		selectedShipIndex = -1;
		tween(placedShip, {
			alpha: 1.0
		}, {
			duration: 200
		});
	}
};
game.update = function () {
	// Check if we should add a new ship (every 50 points)
	var currentScore = LK.getScore();
	var newAvailableShips = Math.min(totalShips, 1 + Math.floor(currentScore / 50));
	if (newAvailableShips > availableShips) {
		availableShips = newAvailableShips;
		// Make the newly available ship visible
		for (var k = 0; k < availableShips; k++) {
			if (!defensiveShips[k].visible) {
				defensiveShips[k].visible = true;
			}
		}
	}
	for (var i = 0; i < planets.length; i++) {
		planets[i].update();
	}
	asteroidSpawnTimer++;
	// Calculate spawn frequency based on score - starts at 120 ticks, decreases to minimum of 30 ticks
	var baseSpawnDelay = 120;
	var minSpawnDelay = 30;
	var scoreSpeedUp = Math.floor(LK.getScore() / 100); // Every 100 points reduces delay
	var currentSpawnDelay = Math.max(minSpawnDelay, baseSpawnDelay - scoreSpeedUp * 10);
	if (asteroidSpawnTimer > currentSpawnDelay) {
		var asteroid = new Asteroid();
		var spawnAngle = Math.random() * Math.PI * 2;
		var spawnDistance = 1500;
		asteroid.x = sunX + Math.cos(spawnAngle) * spawnDistance;
		asteroid.y = sunY + Math.sin(spawnAngle) * spawnDistance;
		// Set initial velocity toward Earth's current position
		var dx = earth.x - asteroid.x;
		var dy = earth.y - asteroid.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			asteroid.velocityX = dx / distance * 2;
			asteroid.velocityY = dy / distance * 2;
		}
		asteroids.push(asteroid);
		game.addChild(asteroid);
		asteroidSpawnTimer = 0;
	}
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		for (var j = asteroids.length - 1; j >= 0; j--) {
			if (bullet.intersects(asteroids[j])) {
				LK.setScore(LK.getScore() + 5);
				scoreTxt.setText('Score: ' + LK.getScore());
				bullet.destroy();
				bullets.splice(i, 1);
				asteroids[j].destroy();
				asteroids.splice(j, 1);
				break;
			}
		}
	}
	// Update lasers
	for (var i = lasers.length - 1; i >= 0; i--) {
		var laser = lasers[i];
		laser.update();
		if (laser.x < -50 || laser.x > 2098 || laser.y < -50 || laser.y > 2782) {
			laser.destroy();
			lasers.splice(i, 1);
			continue;
		}
		// Check laser collision with asteroids
		for (var j = asteroids.length - 1; j >= 0; j--) {
			if (laser.intersects(asteroids[j])) {
				LK.setScore(LK.getScore() + 5);
				scoreTxt.setText('Score: ' + LK.getScore());
				laser.destroy();
				lasers.splice(i, 1);
				asteroids[j].destroy();
				asteroids.splice(j, 1);
				break;
			}
		}
	}
	for (var i = asteroids.length - 1; i >= 0; i--) {
		var asteroid = asteroids[i];
		for (var j = 0; j < planets.length; j++) {
			if (asteroid.intersects(planets[j])) {
				if (planets[j] === earth) {
					LK.effects.flashScreen(0x440000, 1000);
					lives--;
					livesTxt.setText('Lives: ' + lives);
					if (lives <= 0) {
						LK.showGameOver();
						return;
					}
				}
				asteroid.destroy();
				asteroids.splice(i, 1);
				break;
			}
		}
		var distanceFromSun = Math.sqrt(Math.pow(asteroid.x - sunX, 2) + Math.pow(asteroid.y - sunY, 2));
		if (distanceFromSun < 120) {
			asteroid.destroy();
			asteroids.splice(i, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -178,9 +178,9 @@
 			if (!ship.selected) {
 				ship.selected = true;
 				selectedShipIndex = shipIndex;
 				tween(ship, {
-					alpha: 0.5
+					alpha: 0.7
 				}, {
 					duration: 200
 				});
 			} else {