===================================================================
--- original.js
+++ change.js
@@ -25,23 +25,32 @@
 });
 // 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();
+	self.trailParticles = [];
+	self.createTrail = function (x, y, targetY) {
+		var trailLength = 10;
+		for (var i = 0; i < trailLength; i++) {
+			var trailParticle = new FireworkParticle();
+			trailParticle.color = 0xAAAAAA; // Trail color
+			trailParticle.x = x;
+			trailParticle.y = y + i * (targetY - y) / trailLength;
+			trailParticle.speedY = (targetY - y) / trailLength;
+			trailParticle.createAsset('fireworkParticle', 'Trail particle', 0.5, 0.5).tint = trailParticle.color;
+			self.trailParticles.push(trailParticle);
+			game.addChild(trailParticle);
 		}
 	};
+	self.update = function () {
+		for (var i = self.trailParticles.length - 1; i >= 0; i--) {
+			self.trailParticles[i].y += self.trailParticles[i].speedY;
+			self.trailParticles[i].alpha *= 0.95; // fade out
+			if (self.trailParticles[i].alpha < 0.05) {
+				self.trailParticles[i].destroy();
+				self.trailParticles.splice(i, 1);
+			}
+		}
+	};
 });
 // Firework class
 var Firework = Container.expand(function () {
 	var self = Container.call(this);
@@ -88,30 +97,24 @@
 // 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);
+	var firework = new Firework();
+	var launchTrail = new LaunchTrail();
+	launchTrail.createTrail(pos.x, pos.y, pos.y - 300); // Create a trail that goes 300 pixels up
+	firework.explode(pos.x, pos.y - 300); // Start the explosion 300 pixels above the click
+	fireworks.push({
+		firework: firework,
+		trail: launchTrail
+	});
 });
 // 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) {
+		var fireworkObj = fireworks[i];
+		fireworkObj.firework.update();
+		fireworkObj.trail.update();
+		if (fireworkObj.firework.particles.length === 0 && fireworkObj.trail.trailParticles.length === 0) {
 			fireworks.splice(i, 1);
 		}
 	}
 });
\ No newline at end of file