===================================================================
--- 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);