/**** 
* Classes
****/ 
var Bullet = Container.expand(function (startX, startY) {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = startX;
	self.y = startY;
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = Math.random() * 3 + 1; // Random speed between 1 and 4
	self.direction = Math.random() < 0.5 ? -1 : 1; // Random direction
	self.health = 3; // Add health property
	self.update = function () {
		self.y += self.speed; // Move vertically towards the bottom of the screen
		self.x += self.direction * self.speed; // Move horizontally
		if (self.x < 0 || self.x > 2048) {
			self.direction *= -1; // Change direction if hitting screen edge
		}
		if (self.y > 2732) {
			self.y = 0;
			self.x = Math.random() * 2048;
		}
	};
	self.takeDamage = function () {
		self.health -= 1;
		if (self.health <= 0) {
			createExplosion(self.x, self.y); // Add explosion effect
			self.destroy();
			LK.getSound('shoot').play(); // Play sound when enemy is destroyed
		}
	};
});
var EnemyBullet = Container.expand(function (startX, startY) {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = startX;
	self.y = startY;
	self.speed = 10; // Increase bullet speed
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.health = 3; // Add health property
	self.shoot = function () {
		var bullet = new Bullet(self.x, self.y - 50);
		game.addChild(bullet);
		bullets.push(bullet);
		LK.getSound('shoot').play();
	};
	self.update = function () {
		// Player movement logic
		if (isTouching) {
			var deltaX = touchStartX - self.x;
			self.x += deltaX;
			touchStartX = self.x;
		}
	};
	self.takeDamage = function () {
		if (!self.invincible) {
			self.health -= 1;
			updateHealthDisplay();
			if (self.health <= 0) {
				createExplosion(self.x, self.y); // Add explosion effect
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver('Final Score: ' + score);
				return; // Exit function to prevent further execution
			} else {
				self.invincible = true;
				LK.setTimeout(function () {
					self.invincible = false;
				}, 2000); // 2 seconds of invincibility
			}
		}
	};
});

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

/**** 
* Game Code
****/ 
// Play background music
LK.playMusic('1battlefieldepic');
function createExplosion(x, y) {
	var explosion = LK.getAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: x,
		y: y
	});
	game.addChild(explosion);
	LK.effects.flashObject(explosion, 0xffa500, 500); // Flash orange for 500ms
	LK.setTimeout(function () {
		explosion.destroy();
	}, 500); // Destroy explosion after 500ms
}
var healthTxt = new Text2('Health: 3', {
	size: 100,
	fill: 0xFFFFFF
});
healthTxt.anchor.set(1, 0); // Set anchor to the top-right corner
LK.gui.topRight.addChild(healthTxt); // Move health display to the top-right corner
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function updateHealthDisplay() {
	healthTxt.setText('Health: ' + player.health);
}
function updateScoreDisplay() {
	scoreTxt.setText('Score: ' + score);
}
// Add shooting mechanism on touch
game.down = function (x, y, obj) {
	player.shoot();
	player.x = x; // Move player to touch position
};
game.move = function (x, y, obj) {
	player.x = x; // Move player to touch position
};
var isTouching = false; // Initialize isTouching variable
var background = LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
});
game.addChild(background);
var player = new Player();
game.addChild(player);
player.x = 1024;
player.y = 2500;
updateHealthDisplay(); // Update health display on game start
var enemies = [];
for (var i = 0; i < 3; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * 1000;
	game.addChild(enemy);
	enemies.push(enemy);
}
var score = 0;
var bullets = [];
var enemyBullets = [];
game.update = function () {
	player.update();
	// Regenerate player health over time
	if (LK.ticks % 600 === 0 && player.health < 3) {
		// Every 10 seconds
		player.health += 1;
		updateHealthDisplay();
	}
	enemies.forEach(function (enemy) {
		enemy.update();
		if (player.intersects(enemy)) {
			player.takeDamage();
			if (player.health <= 0) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		}
		// Enemy shooting mechanism
		if (LK.ticks % 180 === 0) {
			// Shoot every 3 seconds
			var enemyBullet = new EnemyBullet(enemy.x, enemy.y + 50);
			game.addChild(enemyBullet);
			enemyBullets.push(enemyBullet);
		}
	});
	bullets.forEach(function (bullet, index) {
		bullet.update();
		if (bullet.y < 0) {
			bullet.destroy();
			bullets.splice(index, 1);
			return; // Exit loop to prevent further execution
		} else {
			enemies.forEach(function (enemy, enemyIndex) {
				if (bullet.intersects(enemy)) {
					bullet.destroy();
					bullets.splice(index, 1);
					enemy.takeDamage(); // Reduce enemy health 
					if (enemy.health <= 0) {
						score += 10; // Increase score by 10
						updateScoreDisplay(); // Update score display
						enemies.splice(enemyIndex, 1);
						if (enemies.length === 0) {
							LK.showYouWin(); // Show winning screen when all enemies are destroyed 
						} else {
							var newEnemy = new Enemy(); // Respawn a new enemy 
							newEnemy.x = Math.random() * 2048;
							newEnemy.y = Math.random() * 1000;
							game.addChild(newEnemy);
							enemies.push(newEnemy);
						}
					}
				}
			});
		}
	});
	enemyBullets.forEach(function (bullet, index) {
		bullet.update();
		if (bullet.y > 2732) {
			bullet.destroy();
			enemyBullets.splice(index, 1);
			return; // Exit loop to prevent further execution
		} else {
			if (bullet.intersects(player)) {
				bullet.destroy();
				enemyBullets.splice(index, 1);
				player.takeDamage();
			}
		}
	});
};