/**** 
* Classes
****/ 
var BomberEnemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('bomberEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Bomber enemy properties
	self.speed = 2; // Medium speed
	self.hitPoints = 2; // Takes 2 hits to destroy
	self.maxHitPoints = 2;
	self.shootCooldown = 0;
	self.shootRate = 240; // Shoots every 4 seconds
	// Visual feedback for damage
	self.updateTint = function () {
		var damageRatio = self.hitPoints / self.maxHitPoints;
		if (damageRatio > 0.5) {
			enemyGraphics.tint = 0xFFFFFF; // White (no damage)
		} else {
			enemyGraphics.tint = 0xFFAAAA; // Light red (damaged)
		}
	};
	self.updateTint(); // Initialize tint
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Update shooting cooldown
		self.shootCooldown--;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
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 () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if bullet went off screen (transition from on-screen to off-screen)
		if (self.lastY >= -50 && self.y < -50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var CustomizationMenu = Container.expand(function () {
	var self = Container.call(this);
	self.selectedShipType = 'playerShip'; // Default ship
	self.shipPreviews = [];
	// Create ship selection buttons
	var shipTypes = ['playerShip', 'playerShip2', 'playerShip3'];
	var shipNames = ['Warrior', 'Archer', 'Mage'];
	for (var i = 0; i < shipTypes.length; i++) {
		var shipContainer = new Container();
		// Ship preview
		var shipPreview = LK.getAsset(shipTypes[i], {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.5,
			scaleY: 1.5,
			rotation: 0
		});
		shipPreview.x = 0;
		shipPreview.y = -40;
		shipContainer.addChild(shipPreview);
		// Character preview only (no name text)
		// Selection border - removed bullet graphic
		var border = new Container();
		border.alpha = 0;
		border.x = 0;
		border.y = -40;
		shipContainer.addChild(border);
		// Position ships horizontally
		shipContainer.x = 2048 / 2 + (i - 1) * 400;
		shipContainer.y = 2732 / 2 - 50;
		// Store references
		shipContainer.shipType = shipTypes[i];
		shipContainer.border = border;
		shipContainer.preview = shipPreview;
		self.shipPreviews.push(shipContainer);
		self.addChild(shipContainer);
	}
	// Highlight default selection
	self.shipPreviews[0].preview.tint = 0x00FF00;
	self.selectShip = function (shipType) {
		self.selectedShipType = shipType;
		// Update visual selection using character tint instead of border
		for (var i = 0; i < self.shipPreviews.length; i++) {
			if (self.shipPreviews[i].shipType === shipType) {
				self.shipPreviews[i].preview.tint = 0x00FF00; // Green tint for selected
			} else {
				self.shipPreviews[i].preview.tint = 0xFFFFFF; // Normal tint for unselected
			}
		}
	};
	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.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		rotation: Math.PI
	});
	self.speed = 8;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if bullet went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var FastEnemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('fastEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// FastEnemy without red tint for differentiation
	self.speed = 6; // Faster than regular enemy
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var HealthPowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('healthPowerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	powerUpGraphics.rotation = Math.PI / 4; // 45 degree rotation for visual appeal
	self.speed = 3;
	self.rotationSpeed = 0.1;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		powerUpGraphics.rotation += self.rotationSpeed;
		// Check if power-up went off screen
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var RapidFirePowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('rapidFirePowerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.scaleTimer = 0;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Scaling effect
		self.scaleTimer += 0.15;
		var scale = 1 + 0.2 * Math.sin(self.scaleTimer);
		powerUpGraphics.scaleX = scale;
		powerUpGraphics.scaleY = scale;
		// Check if power-up went off screen
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var ShieldPowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('shieldPowerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.pulseTimer = 0;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Pulsing effect
		self.pulseTimer += 0.2;
		powerUpGraphics.alpha = 0.7 + 0.3 * Math.sin(self.pulseTimer);
		// Check if power-up went off screen
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var TankEnemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('tankEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Tank enemy properties
	self.speed = 1.5; // Slower than other enemies
	self.hitPoints = 3; // Takes 3 hits to destroy
	self.maxHitPoints = 3;
	// Visual feedback for damage
	self.updateTint = function () {
		var damageRatio = self.hitPoints / self.maxHitPoints;
		if (damageRatio > 0.66) {
			enemyGraphics.tint = 0xFFFFFF; // White (no damage)
		} else if (damageRatio > 0.33) {
			enemyGraphics.tint = 0xFFAAAA; // Light red (medium damage)
		} else {
			enemyGraphics.tint = 0xFF6666; // Red (heavy damage)
		}
	};
	self.updateTint(); // Initialize tint
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Game variables
var game = new LK.Game({
	backgroundColor: 0x001122
});

/**** 
* Game Code
****/ 
// Add background
var background = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	scaleX: 1,
	scaleY: 1.33
});
game.addChild(background);
// Game variables
var gameStarted = false;
var showingCustomization = false;
var startMenu;
var customizationMenu;
var selectedShipType = 'playerShip';
var player;
var bullets = [];
var enemyBullets = [];
var enemies = [];
var enemySpawnTimer = 0;
var enemySpawnRate = 120; // Frames between enemy spawns (doubled to halve enemy count)
var enemyShootTimer = 0;
var dragNode = null;
var enemiesPassed = 0; // Track how many enemies have passed the bottom
var playerLives = 2; // Player starts with 2 lives
var isHoldingDown = false; // Track if player is holding down
var powerUps = []; // Array to track power-ups
var powerUpSpawnTimer = 0;
var powerUpSpawnRate = 300; // Spawn power-up every 5 seconds (increased frequency)
var shieldActive = false; // Shield power-up status
var shieldTimer = 0; // Shield duration timer
var rapidFireActive = false; // Rapid fire power-up status
var rapidFireTimer = 0; // Rapid fire duration timer
var shieldEffect; // Visual shield effect
// Score display
var scoreImage = LK.getAsset('puntos', {
	anchorX: 0.5,
	anchorY: 0,
	scaleX: 3,
	scaleY: 3
});
scoreImage.x = -50; // Position image to the left
LK.gui.top.addChild(scoreImage);
var scoreTxt = new Text2('0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0); // Anchor to left edge
scoreTxt.x = 80; // Position text to the right of the image
LK.gui.top.addChild(scoreTxt);
// Lives display
var livesImage = LK.getAsset('vidas', {
	anchorX: 0.5,
	anchorY: 0,
	scaleX: 3,
	scaleY: 3
});
livesImage.x = -50; // Position image to the left
livesImage.y = 100;
LK.gui.top.addChild(livesImage);
var livesTxt = new Text2('2', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(0, 0); // Anchor to left edge
livesTxt.x = 80; // Position text to the right of the image
livesTxt.y = 100;
LK.gui.top.addChild(livesTxt);
// Create start menu
startMenu = new Container();
game.addChild(startMenu);
// Animated background elements
var menuBg1 = LK.getAsset('playerShip', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 6,
	scaleY: 6,
	alpha: 0.1,
	tint: 0x0066FF
});
menuBg1.x = 2048 / 2 - 300;
menuBg1.y = 2732 / 2 - 300;
startMenu.addChild(menuBg1);
var menuBg2 = LK.getAsset('playerShip3', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 4,
	alpha: 0.15,
	tint: 0x00AAFF
});
menuBg2.x = 2048 / 2 + 400;
menuBg2.y = 2732 / 2 + 100;
startMenu.addChild(menuBg2);
var menuBg3 = LK.getAsset('playerShip2', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 5,
	scaleY: 5,
	alpha: 0.08,
	tint: 0x66AAFF
});
menuBg3.x = 2048 / 2;
menuBg3.y = 2732 / 2 + 400;
startMenu.addChild(menuBg3);
// Game title using letrasdeltitulo image asset
var titleImage = LK.getAsset('letrasdeltitulo', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 4
});
titleImage.x = 2048 / 2;
titleImage.y = 2732 / 2 - 400;
startMenu.addChild(titleImage);
// Modern instruction cards
var instructionBg = LK.getAsset('playerShip', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 6,
	scaleY: 3,
	alpha: 0.1,
	tint: 0x00AAFF
});
instructionBg.x = 2048 / 2;
instructionBg.y = 2732 / 2 - 100;
startMenu.addChild(instructionBg);
var instructionsTxt = new Text2('🚀 DRAG TO MOVE  •  💥 TAP TO SHOOT  •  ⭐ DESTROY ENEMIES', {
	size: 50,
	fill: 0xFFFFFF
});
instructionsTxt.anchor.set(0.5, 0.5);
instructionsTxt.x = 2048 / 2;
instructionsTxt.y = 2732 / 2 - 100;
startMenu.addChild(instructionsTxt);
// Customize button with background (moved to left side)
var customizeBg = LK.getAsset('playerShip2', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 2,
	alpha: 0.2,
	tint: 0xFFAA00
});
customizeBg.x = 2048 / 2 - 400;
customizeBg.y = 2732 / 2 + 200;
startMenu.addChild(customizeBg);
// Add customize character icon as the main button
var customizeIcon = LK.getAsset('selecciondepersonaje', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 3,
	scaleY: 3
});
customizeIcon.x = 2048 / 2 - 400;
customizeIcon.y = 2732 / 2 + 200;
startMenu.addChild(customizeIcon);
// Start button with glow effect (moved to right side)
var startBtnGlow = LK.getAsset('botondeinicio', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 8.5,
	scaleY: 8.5,
	alpha: 0.3,
	tint: 0x00FF00
});
startBtnGlow.x = 2048 / 2 + 400;
startBtnGlow.y = 2732 / 2 + 200;
startMenu.addChild(startBtnGlow);
var startBtnTxt = LK.getAsset('botondeinicio', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 7,
	scaleY: 7
});
startBtnTxt.x = 2048 / 2 + 400;
startBtnTxt.y = 2732 / 2 + 200;
startMenu.addChild(startBtnTxt);
// Start button text overlay removed
// Create customization menu
customizationMenu = new CustomizationMenu();
game.addChild(customizationMenu);
customizationMenu.visible = false;
// Add title to customization menu using selecciona un personaje image
var customTitle = LK.getAsset('seleccionaunpersonaje', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 8,
	scaleY: 8
});
customTitle.x = 2048 / 2;
customTitle.y = 2732 / 2 - 550;
customizationMenu.addChild(customTitle);
// Add back button to customization menu
var backBtnTxt = LK.getAsset('botonback', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 4
});
backBtnTxt.x = 2048 / 2 - 300;
backBtnTxt.y = 2732 / 2 + 300;
customizationMenu.addChild(backBtnTxt);
// Add play button to customization menu
var playBtnTxt = LK.getAsset('botondeinicio', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4,
	scaleY: 4
});
playBtnTxt.x = 2048 / 2 + 300;
playBtnTxt.y = 2732 / 2 + 300;
customizationMenu.addChild(playBtnTxt);
// Hide game elements initially
scoreTxt.visible = false;
livesImage.visible = false;
livesTxt.visible = false;
// Create player with selected ship type function
function createPlayer() {
	if (player) {
		player.destroy();
	}
	player = game.addChild(new Player());
	// Replace player graphics with selected character
	player.removeChildren();
	var newCharacterGraphics = player.attachAsset(selectedShipType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	player.x = 2048 / 2;
	player.y = 2732 - 150; // Position near bottom of screen
	playerLives = 2; // Reset lives when creating new player
	livesTxt.setText(playerLives);
	// Create shield effect (initially invisible)
	shieldEffect = LK.getAsset('shieldPowerUp', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 2,
		alpha: 0
	});
	player.addChild(shieldEffect);
	shieldActive = false;
	shieldTimer = 0;
	rapidFireActive = false;
	rapidFireTimer = 0;
}
createPlayer();
// Touch/mouse controls
game.down = function (x, y, obj) {
	if (!gameStarted && !showingCustomization) {
		// Check if start button was tapped (now at right side position)
		if (x >= 2048 / 2 + 300 && x <= 2048 / 2 + 500 && y >= 2732 / 2 + 170 && y <= 2732 / 2 + 230) {
			gameStarted = true;
			startMenu.visible = false;
			scoreTxt.visible = true;
			livesImage.visible = true;
			livesTxt.visible = true;
			createPlayer(); // Create player with default character
			LK.playMusic('rap'); // Start background music when game begins
			return;
		}
		// Check if customize button was tapped (now at left side position)
		if (x >= 2048 / 2 - 500 && x <= 2048 / 2 - 300 && y >= 2732 / 2 + 170 && y <= 2732 / 2 + 230) {
			// Show customization menu
			showingCustomization = true;
			startMenu.visible = false;
			customizationMenu.visible = true;
			return;
		}
		return;
	}
	if (showingCustomization) {
		// Handle customization menu clicks
		// Check ship selection
		for (var i = 0; i < customizationMenu.shipPreviews.length; i++) {
			var shipContainer = customizationMenu.shipPreviews[i];
			var shipX = shipContainer.x;
			var shipY = shipContainer.y;
			if (x >= shipX - 100 && x <= shipX + 100 && y >= shipY - 100 && y <= shipY + 100) {
				selectedShipType = shipContainer.shipType;
				customizationMenu.selectShip(selectedShipType);
				return;
			}
		}
		// Check back button
		if (x >= 2048 / 2 - 400 && x <= 2048 / 2 - 200 && y >= 2732 / 2 + 270 && y <= 2732 / 2 + 330) {
			showingCustomization = false;
			customizationMenu.visible = false;
			startMenu.visible = true;
			return;
		}
		// Check play button
		if (x >= 2048 / 2 + 200 && x <= 2048 / 2 + 400 && y >= 2732 / 2 + 270 && y <= 2732 / 2 + 330) {
			gameStarted = true;
			showingCustomization = false;
			customizationMenu.visible = false;
			scoreTxt.visible = true;
			livesImage.visible = true;
			livesTxt.visible = true;
			createPlayer(); // Recreate player with selected character
			LK.playMusic('rap'); // Start background music when game begins
			return;
		}
		return;
	}
	dragNode = player;
	player.x = x;
	isHoldingDown = true;
	// Shoot bullet
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y - 30;
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('shoot').play();
	// If rapid fire is active, shoot additional bullets
	if (rapidFireActive) {
		for (var rb = 0; rb < 2; rb++) {
			var rapidBullet = new Bullet();
			rapidBullet.x = player.x + (rb - 0.5) * 40; // Spread bullets
			rapidBullet.y = player.y - 30;
			bullets.push(rapidBullet);
			game.addChild(rapidBullet);
		}
	}
};
game.move = function (x, y, obj) {
	if (gameStarted && dragNode) {
		// Keep player within screen bounds
		dragNode.x = Math.max(40, Math.min(2048 - 40, x));
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
	isHoldingDown = false;
};
// Main game update loop
game.update = function () {
	if (!gameStarted) {
		return;
	}
	// Update power-up effects
	if (shieldActive) {
		// Update shield visual effect
		shieldEffect.alpha = 0.5 + 0.3 * Math.sin(LK.ticks * 0.3);
		shieldEffect.rotation += 0.1;
	}
	if (rapidFireActive) {
		rapidFireTimer--;
		if (rapidFireTimer <= 0) {
			rapidFireActive = false;
		}
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.shouldDestroy) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet vs enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Destroy bullet
				bullet.destroy();
				bullets.splice(i, 1);
				// Handle different enemy types
				if (enemy instanceof TankEnemy) {
					// Tank enemy takes multiple hits
					enemy.hitPoints--;
					enemy.updateTint(); // Update visual damage
					if (enemy.hitPoints <= 0) {
						enemy.destroy();
						enemies.splice(j, 1);
						LK.setScore(LK.getScore() + 50); // High score for tank
						scoreTxt.setText(LK.getScore());
					}
					LK.getSound('enemyHit').play();
				} else if (enemy instanceof BomberEnemy) {
					// Bomber enemy takes 2 hits
					enemy.hitPoints--;
					enemy.updateTint(); // Update visual damage
					if (enemy.hitPoints <= 0) {
						enemy.destroy();
						enemies.splice(j, 1);
						LK.setScore(LK.getScore() + 30); // Medium score for bomber
						scoreTxt.setText(LK.getScore());
					}
					LK.getSound('enemyHit').play();
				} else {
					// Regular and fast enemies destroyed in one hit
					enemy.destroy();
					enemies.splice(j, 1);
					// Increase score - more points for fast enemies
					var points = enemy instanceof FastEnemy ? 20 : 10;
					LK.setScore(LK.getScore() + points);
					scoreTxt.setText(LK.getScore());
					LK.getSound('enemyHit').play();
				}
				break;
			}
		}
	}
	// Update enemy bullets
	for (var m = enemyBullets.length - 1; m >= 0; m--) {
		var enemyBullet = enemyBullets[m];
		if (enemyBullet.shouldDestroy) {
			enemyBullet.destroy();
			enemyBullets.splice(m, 1);
			continue;
		}
		// Check enemy bullet vs player collision (closer proximity required)
		var dx = enemyBullet.x - player.x;
		var dy = enemyBullet.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 80) {
			// Bullets must be within 80 pixels to hit
			// Remove bullet
			enemyBullet.destroy();
			enemyBullets.splice(m, 1);
			// Only take damage if shield is not active
			if (!shieldActive) {
				playerLives--;
				livesTxt.setText(playerLives);
				LK.effects.flashObject(player, 0xff0000, 500);
				LK.getSound('sonidodolor').play(); // Play pain sound when bullet hits player
				if (playerLives <= 0) {
					// Game Over
					LK.effects.flashScreen(0xff0000, 1000);
					LK.showGameOver();
					return;
				}
			} else {
				// Shield absorbed the hit - deactivate shield
				shieldActive = false;
				shieldEffect.alpha = 0;
				LK.effects.flashObject(player, 0x00AAFF, 300);
			}
		}
	}
	// Update enemies
	for (var k = enemies.length - 1; k >= 0; k--) {
		var enemy = enemies[k];
		if (enemy.shouldDestroy) {
			// Check if enemy passed the bottom (went off screen)
			if (enemy.y > 2732 + 50) {
				enemiesPassed++;
				// Check if 5 or more enemies have passed
				if (enemiesPassed >= 5) {
					// Game Over
					LK.effects.flashScreen(0xff0000, 1000);
					LK.showGameOver();
					return;
				}
			}
			enemy.destroy();
			enemies.splice(k, 1);
			continue;
		}
		// Bomber enemy shooting behavior
		if (enemy instanceof BomberEnemy && enemy.shootCooldown <= 0 && enemy.y > 0 && enemy.y < 2400) {
			enemy.shootCooldown = enemy.shootRate;
			var bomberBullet = new EnemyBullet();
			bomberBullet.x = enemy.x;
			bomberBullet.y = enemy.y + 50;
			enemyBullets.push(bomberBullet);
			game.addChild(bomberBullet);
			LK.getSound('disparoenemigo').play();
		}
		// Check enemy vs player collision (closer proximity required)
		var dx = enemy.x - player.x;
		var dy = enemy.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 90) {
			// Enemies must be within 90 pixels to hit
			// Remove enemy
			enemy.destroy();
			enemies.splice(k, 1);
			// Only take damage if shield is not active
			if (!shieldActive) {
				playerLives--;
				livesTxt.setText(playerLives);
				LK.effects.flashObject(player, 0xff0000, 500);
				LK.getSound('sonidodolor').play(); // Play pain sound when enemy collides with player
				if (playerLives <= 0) {
					// Game Over
					LK.effects.flashScreen(0xff0000, 1000);
					LK.showGameOver();
					return;
				}
			} else {
				// Shield absorbed the hit - deactivate shield
				shieldActive = false;
				shieldEffect.alpha = 0;
				LK.effects.flashObject(player, 0x00AAFF, 300);
			}
			continue;
		}
	}
	// Update power-ups
	for (var p = powerUps.length - 1; p >= 0; p--) {
		var powerUp = powerUps[p];
		if (powerUp.shouldDestroy) {
			powerUp.destroy();
			powerUps.splice(p, 1);
			continue;
		}
		// Check power-up vs player collision
		if (powerUp.intersects(player)) {
			// Apply power-up effect based on type
			if (powerUp instanceof HealthPowerUp) {
				playerLives = Math.min(playerLives + 1, 5); // Max 5 lives - gives extra life
				livesTxt.setText(playerLives);
			} else if (powerUp instanceof ShieldPowerUp) {
				shieldActive = true;
				shieldTimer = 300; // 5 seconds at 60 FPS - protects from one hit
			} else if (powerUp instanceof RapidFirePowerUp) {
				rapidFireActive = true;
				rapidFireTimer = 300; // 5 seconds at 60 FPS - fires 3 times faster
			}
			// Remove power-up and play sound
			powerUp.destroy();
			powerUps.splice(p, 1);
			LK.getSound('powerUpCollect').play();
			LK.effects.flashObject(player, 0x00FF00, 300);
		}
	}
	// Enemy shooting
	enemyShootTimer++;
	if (enemyShootTimer >= 180) {
		// Enemies shoot every 3 seconds
		enemyShootTimer = 0;
		// Random enemy shoots
		if (enemies.length > 0) {
			var shootingEnemy = enemies[Math.floor(Math.random() * enemies.length)];
			var enemyBullet = new EnemyBullet();
			enemyBullet.x = shootingEnemy.x;
			enemyBullet.y = shootingEnemy.y + 30;
			enemyBullets.push(enemyBullet);
			game.addChild(enemyBullet);
			LK.getSound('disparoenemigo').play();
		}
	}
	// Spawn enemies
	enemySpawnTimer++;
	if (enemySpawnTimer >= enemySpawnRate) {
		enemySpawnTimer = 0;
		var enemy;
		var randomValue = Math.random();
		// 8% tank, 15% bomber, 25% fast, 52% regular enemy
		if (randomValue < 0.08) {
			enemy = new TankEnemy();
		} else if (randomValue < 0.23) {
			enemy = new BomberEnemy();
		} else if (randomValue < 0.48) {
			enemy = new FastEnemy();
		} else {
			enemy = new Enemy();
		}
		enemy.x = Math.random() * (2048 - 120) + 60; // Random X position within bounds
		enemy.y = -30; // Start above screen
		enemies.push(enemy);
		game.addChild(enemy);
		// Gradually increase difficulty
		if (enemySpawnRate > 40) {
			enemySpawnRate -= 0.5;
		}
	}
	// Spawn power-ups
	powerUpSpawnTimer++;
	if (powerUpSpawnTimer >= powerUpSpawnRate) {
		powerUpSpawnTimer = 0;
		var powerUp;
		var randomValue = Math.random();
		// 25% health, 50% shield, 25% rapid fire
		if (randomValue < 0.25) {
			powerUp = new HealthPowerUp();
		} else if (randomValue < 0.75) {
			powerUp = new ShieldPowerUp();
		} else {
			powerUp = new RapidFirePowerUp();
		}
		powerUp.x = Math.random() * (2048 - 120) + 60; // Random X position within bounds
		powerUp.y = -30; // Start above screen
		powerUps.push(powerUp);
		game.addChild(powerUp);
	}
};