/**** 
* Classes
****/ 
// Define a class for bullets
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.update = function () {
		self.y -= self.speed;
	};
});
// Assets will be automatically created and loaded by the LK engine based on their usage in the code.
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
	};
});
// Define a class for zombies
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
	};
});

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

/**** 
* Game Code
****/ 
// Add background image
var background = LK.getAsset('backgroundImage', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(background);
// Create and display the kill count text
var killCountText = new Text2('Kills: 0', {
	size: 100,
	fill: "#ffffff"
});
killCountText.anchor.set(0.5, 0);
LK.gui.top.addChild(killCountText);
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
// Initialize kill count
var killCount = 0;
// Initialize arrays for zombies and bullets
var zombies = [];
var bullets = [];
// Function to spawn a zombie
function spawnZombie() {
	var zombie = new Zombie();
	zombie.x = Math.random() * 2048;
	zombie.y = -50;
	zombies.push(zombie);
	game.addChild(zombie);
}
// Function to handle shooting
function shootBullet() {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
}
// Game update logic
game.update = function () {
	// Update player
	player.update();
	// Update zombies
	for (var i = zombies.length - 1; i >= 0; i--) {
		zombies[i].update();
		if (zombies[i].y > 2732) {
			zombies[i].destroy();
			zombies.splice(i, 1);
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		if (bullets[j].y < 0) {
			bullets[j].destroy();
			bullets.splice(j, 1);
		}
	}
	// Check for collisions between bullets and zombies
	for (var k = bullets.length - 1; k >= 0; k--) {
		for (var l = zombies.length - 1; l >= 0; l--) {
			if (bullets[k].intersects(zombies[l])) {
				bullets[k].destroy();
				zombies[l].destroy();
				bullets.splice(k, 1);
				zombies.splice(l, 1);
				killCount++;
				killCountText.setText('Kills: ' + killCount);
				break;
			}
		}
	}
	// Spawn zombies periodically
	if (LK.ticks % 60 === 0) {
		spawnZombie();
	}
};
// Handle player movement
game.move = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
// Handle shooting
game.down = function (x, y, obj) {
	shootBullet();
};

===================================================================
--- original.js
+++ change.js
@@ -8,12 +8,10 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 15;
-	self.gravity = 0.5; // Gravity effect
 	self.update = function () {
 		self.y -= self.speed;
-		self.speed -= self.gravity; // Apply gravity to speed
 	};
 });
 // Assets will be automatically created and loaded by the LK engine based on their usage in the code.
 // Define a class for the player character
@@ -23,12 +21,10 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 10;
-	self.gravity = 0.3; // Gravity effect
 	self.update = function () {
 		self.y += self.speed;
-		self.speed += self.gravity; // Apply gravity to speed
 	};
 });
 // Define a class for zombies
 var Zombie = Container.expand(function () {
@@ -37,12 +33,10 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 2;
-	self.gravity = 0.2; // Gravity effect
 	self.update = function () {
 		self.y += self.speed;
-		self.speed += self.gravity; // Apply gravity to speed
 	};
 });
 
 /**** 
@@ -104,20 +98,16 @@
 		zombies[i].update();
 		if (zombies[i].y > 2732) {
 			zombies[i].destroy();
 			zombies.splice(i, 1);
-		} else if (zombies[i].speed > 2) {
-			zombies[i].speed = 2; // Reset speed after gravity effect
 		}
 	}
 	// Update bullets
 	for (var j = bullets.length - 1; j >= 0; j--) {
 		bullets[j].update();
 		if (bullets[j].y < 0) {
 			bullets[j].destroy();
 			bullets.splice(j, 1);
-		} else if (bullets[j].speed < 0) {
-			bullets[j].speed = 15; // Reset speed after gravity effect
 		}
 	}
 	// Check for collisions between bullets and zombies
 	for (var k = bullets.length - 1; k >= 0; k--) {