/**** 
* Classes
****/ 
// Assets will be automatically created and loaded by the LK engine based on usage in the game code.
// Player's Bullet
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y -= self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});
// Target
var Target = Container.expand(function () {
	var self = Container.call(this);
	var targetGraphics = self.attachAsset('target', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (LK.ticks % 120 == 0) {
			// 2 seconds = 120 ticks (60 ticks per second)
			self.y += 1; // Move the target down by 1 space
		}
	};
});

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

/**** 
* Game Code
****/ 
var bullets = [];
var targets = [];
var score = 0;
// Create a target at a random position
function spawnTarget() {
	var target = new Target();
	target.x = Math.random() * 2048;
	target.y = 0;
	game.addChild(target);
	targets.push(target);
}
// Check for bullet collisions with targets
function checkCollisions() {
	bullets.forEach(function (bullet, bulletIndex) {
		targets.forEach(function (target, targetIndex) {
			if (bullet.intersects(target)) {
				bullet.destroy();
				target.destroy();
				bullets.splice(bulletIndex, 1);
				targets.splice(targetIndex, 1);
				score += 1;
				LK.effects.flashObject(target, 0xff0000, 500); // Flash target red on hit
			}
		});
	});
}
// Shoot a bullet from the bottom center of the screen
function shoot(x, y) {
	var bullet = new Bullet();
	bullet.x = x;
	bullet.y = 2732; // Start from the bottom of the screen
	game.addChild(bullet);
	bullets.push(bullet);
}
// Game update function
game.update = function () {
	if (LK.ticks % 120 == 0) {
		// Spawn a target every 2 seconds
		spawnTarget();
	}
	checkCollisions();
};
// Touch event to shoot
game.down = function (x, y, obj) {
	shoot(x, y);
};
// Initialize a few targets
for (var i = 0; i < 5; i++) {
	spawnTarget();
}

===================================================================
--- original.js
+++ change.js
@@ -24,10 +24,10 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.update = function () {
-		if (LK.ticks % 240 == 0) {
-			// 4 seconds = 240 ticks (60 ticks per second)
+		if (LK.ticks % 120 == 0) {
+			// 2 seconds = 120 ticks (60 ticks per second)
 			self.y += 1; // Move the target down by 1 space
 		}
 	};
 });