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

/**** 
* Classes
****/ 
var Missile = Container.expand(function () {
	var self = Container.call(this);
	var missileGraphics = self.attachAsset('missile', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.speed = 15;
	self.setTarget = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			self.velocityX = dx / distance * self.speed;
			self.velocityY = dy / distance * self.speed;
		}
		// Rotate missile to face direction of travel
		self.rotation = Math.atan2(dy, dx) + Math.PI / 2;
	};
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var RocketLauncher = Container.expand(function () {
	var self = Container.call(this);
	var launcherBase = self.attachAsset('launcher', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	var barrel = self.attachAsset('launcherBarrel', {
		anchorX: 0.5,
		anchorY: 1.0,
		y: -20
	});
	self.targetAngle = 0;
	self.currentAngle = 0;
	self.rotationSpeed = 0.15;
	self.aimAt = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		self.targetAngle = Math.atan2(dx, dy);
	};
	self.fire = function (targetX, targetY) {
		var missile = new Missile();
		missile.x = self.x;
		missile.y = self.y - 40;
		missile.setTarget(targetX, targetY);
		missiles.push(missile);
		game.addChild(missile);
		LK.getSound('launch').play();
		// Add some recoil effect
		tween(self, {
			scaleX: 1.2,
			scaleY: 0.9
		}, {
			duration: 100,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1.0,
					scaleY: 1.0
				}, {
					duration: 150,
					easing: tween.easeOut
				});
			}
		});
	};
	self.update = function () {
		// Smoothly rotate launcher to target angle
		var angleDiff = self.targetAngle - self.currentAngle;
		// Handle angle wrapping
		if (angleDiff > Math.PI) {
			angleDiff -= 2 * Math.PI;
		} else if (angleDiff < -Math.PI) {
			angleDiff += 2 * Math.PI;
		}
		self.currentAngle += angleDiff * self.rotationSpeed;
		self.rotation = self.currentAngle;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x001122
});

/**** 
* Game Code
****/ 
var missiles = [];
var launcher = null;
// Initialize rocket launcher
launcher = game.addChild(new RocketLauncher());
launcher.x = 2048 / 2;
launcher.y = 2732 - 100;
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Instructions
var instructionsTxt = new Text2('Tap anywhere to fire missiles!', {
	size: 48,
	fill: 0xCCCCCC
});
instructionsTxt.anchor.set(0.5, 0);
instructionsTxt.y = 100;
LK.gui.top.addChild(instructionsTxt);
// Game tap handler
game.down = function (x, y, obj) {
	// Don't fire if tapping on launcher area
	if (y > 2732 - 200) {
		return;
	}
	// Aim and fire
	launcher.aimAt(x, y);
	// Small delay before firing for visual feedback
	LK.setTimeout(function () {
		launcher.fire(x, y);
		// Update score
		LK.setScore(LK.getScore() + 1);
		scoreTxt.setText('Score: ' + LK.getScore());
	}, 200);
};
game.update = function () {
	// Update missiles
	for (var i = missiles.length - 1; i >= 0; i--) {
		var missile = missiles[i];
		// Track last position for boundary checking
		if (missile.lastX === undefined) missile.lastX = missile.x;
		if (missile.lastY === undefined) missile.lastY = missile.y;
		// Check if missile went off screen
		var offScreen = missile.x < -50 || missile.x > 2048 + 50 || missile.y < -50 || missile.y > 2732 + 50;
		if (offScreen) {
			missile.destroy();
			missiles.splice(i, 1);
			continue;
		}
		// Update last position
		missile.lastX = missile.x;
		missile.lastY = missile.y;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -13,9 +13,9 @@
 		anchorY: 1.0
 	});
 	self.velocityX = 0;
 	self.velocityY = 0;
-	self.speed = 8;
+	self.speed = 15;
 	self.setTarget = function (targetX, targetY) {
 		var dx = targetX - self.x;
 		var dy = targetY - self.y;
 		var distance = Math.sqrt(dx * dx + dy * dy);