/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.lastX = undefined;
	self.lastY = undefined;
	self.directionX = 1; // Default horizontal direction
	self.directionY = 0; // Default no vertical movement
	self.update = function () {
		if (self.lastX === undefined) self.lastX = self.x;
		if (self.lastY === undefined) self.lastY = self.y;
		self.x += self.speed * self.directionX;
		self.y += self.speed * self.directionY;
		self.lastX = self.x;
		self.lastY = self.y;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -3;
	self.lastX = undefined;
	self.update = function () {
		if (self.lastX === undefined) self.lastX = self.x;
		self.x += self.speed;
		// Check if enemy reached left side (transition detection)
		if (self.lastX > 0 && self.x <= 0) {
			// Enemy reached left side - game over
			LK.effects.flashScreen(0xFF0000, 1000);
			LK.showGameOver();
		}
		self.lastX = self.x;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shootCooldown = 0;
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
	};
	self.canShoot = function () {
		return self.shootCooldown <= 0;
	};
	self.shoot = function () {
		if (self.canShoot()) {
			self.shootCooldown = 10; // 10 frames cooldown
			return true;
		}
		return false;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
var player = new Player();
var enemies = [];
var bullets = [];
var enemySpawnTimer = 0;
var enemySpawnRate = 120; // Start spawning every 2 seconds (120 frames)
var difficultyTimer = 0;
// Position player in bottom-left corner of screen
player.x = 150;
player.y = 2732 - 150; // Near bottom with some margin
game.addChild(player);
// Create score display
var scoreTxt = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.setText(LK.getScore());
// Tap to shoot
game.down = function (x, y, obj) {
	if (player.shoot()) {
		var bullet = new Bullet();
		bullet.x = player.x + 40; // Spawn slightly ahead of player
		bullet.y = player.y - 40; // Spawn slightly above player
		bullet.lastX = bullet.x;
		bullet.lastY = bullet.y;
		// Determine shooting direction based on tap position
		if (y < player.y) {
			// Tap above player - shoot diagonally upward
			bullet.directionX = 1;
			bullet.directionY = -0.6;
		} else {
			// Tap at or below player - shoot horizontally
			bullet.directionX = 1;
			bullet.directionY = 0;
		}
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
	}
};
game.update = function () {
	// Update enemy spawn timer and difficulty
	enemySpawnTimer++;
	difficultyTimer++;
	// Increase difficulty every 10 seconds (600 frames)
	if (difficultyTimer % 600 === 0 && enemySpawnRate > 30) {
		enemySpawnRate -= 10; // Spawn enemies more frequently
	}
	// Spawn enemies
	if (enemySpawnTimer >= enemySpawnRate) {
		var enemy = new Enemy();
		enemy.x = 2048 + 30; // Spawn just off right edge
		enemy.y = Math.random() * (2732 - 200) + 100; // Random Y position with margins
		enemy.lastX = enemy.x;
		enemies.push(enemy);
		game.addChild(enemy);
		enemySpawnTimer = 0;
	}
	// Update and check bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Remove bullets that go off screen
		if (bullet.x > 2048 + 50 || bullet.y < -50) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet vs enemy collisions
		var bulletHit = false;
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Bullet hit enemy
				LK.setScore(LK.getScore() + 10);
				scoreTxt.setText(LK.getScore());
				// Visual feedback
				tween(enemy, {
					scaleX: 1.5,
					scaleY: 1.5,
					alpha: 0
				}, {
					duration: 200,
					onFinish: function onFinish() {
						if (enemy.parent) {
							enemy.destroy();
						}
					}
				});
				enemies.splice(j, 1);
				bullet.destroy();
				bullets.splice(i, 1);
				bulletHit = true;
				LK.getSound('hit').play();
				break;
			}
		}
		if (bulletHit) continue;
	}
	// Update and check enemies
	for (var k = enemies.length - 1; k >= 0; k--) {
		var enemy = enemies[k];
		// Check if enemy collides with player
		if (enemy.intersects(player)) {
			LK.effects.flashScreen(0xFF0000, 1000);
			LK.showGameOver();
			return;
		}
	}
};
// Play background music
LK.playMusic('bgmusic');

===================================================================
--- original.js
+++ change.js
@@ -14,13 +14,15 @@
 	});
 	self.speed = 8;
 	self.lastX = undefined;
 	self.lastY = undefined;
+	self.directionX = 1; // Default horizontal direction
+	self.directionY = 0; // Default no vertical movement
 	self.update = function () {
 		if (self.lastX === undefined) self.lastX = self.x;
 		if (self.lastY === undefined) self.lastY = self.y;
-		self.x += self.speed;
-		self.y -= self.speed * 0.6; // Move diagonally upward
+		self.x += self.speed * self.directionX;
+		self.y += self.speed * self.directionY;
 		self.lastX = self.x;
 		self.lastY = self.y;
 	};
 	return self;
@@ -106,8 +108,18 @@
 		bullet.x = player.x + 40; // Spawn slightly ahead of player
 		bullet.y = player.y - 40; // Spawn slightly above player
 		bullet.lastX = bullet.x;
 		bullet.lastY = bullet.y;
+		// Determine shooting direction based on tap position
+		if (y < player.y) {
+			// Tap above player - shoot diagonally upward
+			bullet.directionX = 1;
+			bullet.directionY = -0.6;
+		} else {
+			// Tap at or below player - shoot horizontally
+			bullet.directionX = 1;
+			bullet.directionY = 0;
+		}
 		bullets.push(bullet);
 		game.addChild(bullet);
 		LK.getSound('shoot').play();
 	}