/**** 
* Classes
****/
// Firework particle class
var FireworkParticle = Container.expand(function () {
	var self = Container.call(this);
	var particleGraphics = self.createAsset('fireworkParticle', 'Firework particle', 0.5, 0.5);
	self.color = 0xFFFFFF; // Default color white
	particleGraphics.tint = self.color;
	self.speedX = 0;
	self.speedY = 0;
	self.alpha = 1;
	self.scaleX = 1;
	self.scaleY = 1;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.alpha *= 0.98; // fade out more slowly
		self.scaleX *= 0.99;
		self.scaleY *= 0.99;
		if (self.alpha < 0.05) {
			self.destroy();
		}
	};
});
// LaunchTrail class
var LaunchTrail = Container.expand(function () {
	var self = Container.call(this);
	self.startX = 0;
	self.startY = 2732; // Start at the bottom of the screen
	self.endX = 0;
	self.endY = 0;
	self.progress = 0;
	self.duration = 3000; // 3 seconds to reach the target
	self.update = function (delta) {
		self.progress += delta;
		var t = Math.min(self.progress / self.duration, 1);
		self.x = self.startX + (self.endX - self.startX) * t;
		self.y = self.startY + (self.endY - self.startY) * t;
		if (t === 1) {
			self.destroy();
		}
	};
});
// Firework class
var Firework = Container.expand(function () {
	var self = Container.call(this);
	self.particles = [];
	self.explode = function (x, y) {
		var colors = [0xFF0000, 0x00FF00, 0x0000FF, 0xFFFF00, 0xFF00FF, 0x00FFFF];
		var randomColor = colors[Math.floor(Math.random() * colors.length)];
		for (var i = 0; i < 50; i++) {
			var particle = new FireworkParticle();
			var angle = Math.random() * Math.PI * 2;
			var speed = Math.random() * 8 + 4;
			particle.color = randomColor; // Assign random color to particle
			particle.speedX = Math.cos(angle) * speed;
			particle.speedY = Math.sin(angle) * speed;
			particle.x = x;
			particle.y = y;
			particle.createAsset('fireworkParticle', 'Firework particle', 0.5, 0.5).tint = particle.color; // Apply color tint to particle
			self.particles.push(particle);
			game.addChild(particle);
		}
	};
	self.update = function () {
		for (var i = self.particles.length - 1; i >= 0; i--) {
			self.particles[i].update();
			if (self.particles[i].alpha < 0.05) {
				self.particles.splice(i, 1);
			}
		}
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background
});

/**** 
* Game Code
****/
// Initialize fireworks array
var fireworks = [];
// Event listener for mouse or touch down
game.on('down', function (obj) {
	var event = obj.event;
	var pos = event.getLocalPosition(game);
	var trail = new LaunchTrail();
	trail.startX = 1024; // Center X of the screen
	trail.endX = pos.x;
	trail.endY = pos.y;
	game.addChild(trail);
	LK.setTimeout(function () {
		var firework = new Firework();
		firework.explode(pos.x, pos.y);
		fireworks.push(firework);
	}, 3000);
});
// Update function for the game
LK.on('tick', function () {
	var delta = 1000 / 60; // Assuming 60 FPS for tick
	game.children.forEach(function (child) {
		if (child instanceof LaunchTrail) {
			child.update(delta);
		}
	});
	for (var i = fireworks.length - 1; i >= 0; i--) {
		fireworks[i].update();
		if (fireworks[i].particles.length === 0) {
			fireworks.splice(i, 1);
		}
	}
});

===================================================================
--- original.js
+++ change.js
@@ -22,8 +22,27 @@
 			self.destroy();
 		}
 	};
 });
+// LaunchTrail class
+var LaunchTrail = Container.expand(function () {
+	var self = Container.call(this);
+	self.startX = 0;
+	self.startY = 2732; // Start at the bottom of the screen
+	self.endX = 0;
+	self.endY = 0;
+	self.progress = 0;
+	self.duration = 3000; // 3 seconds to reach the target
+	self.update = function (delta) {
+		self.progress += delta;
+		var t = Math.min(self.progress / self.duration, 1);
+		self.x = self.startX + (self.endX - self.startX) * t;
+		self.y = self.startY + (self.endY - self.startY) * t;
+		if (t === 1) {
+			self.destroy();
+		}
+	};
+});
 // Firework class
 var Firework = Container.expand(function () {
 	var self = Container.call(this);
 	self.particles = [];
@@ -69,16 +88,27 @@
 // Event listener for mouse or touch down
 game.on('down', function (obj) {
 	var event = obj.event;
 	var pos = event.getLocalPosition(game);
+	var trail = new LaunchTrail();
+	trail.startX = 1024; // Center X of the screen
+	trail.endX = pos.x;
+	trail.endY = pos.y;
+	game.addChild(trail);
 	LK.setTimeout(function () {
 		var firework = new Firework();
 		firework.explode(pos.x, pos.y);
 		fireworks.push(firework);
 	}, 3000);
 });
 // Update function for the game
 LK.on('tick', function () {
+	var delta = 1000 / 60; // Assuming 60 FPS for tick
+	game.children.forEach(function (child) {
+		if (child instanceof LaunchTrail) {
+			child.update(delta);
+		}
+	});
 	for (var i = fireworks.length - 1; i >= 0; i--) {
 		fireworks[i].update();
 		if (fireworks[i].particles.length === 0) {
 			fireworks.splice(i, 1);