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

/**** 
* Classes
****/ 
var BossVirus = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('bossVirus', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 300;
	self.maxHealth = 300;
	self.speed = 0.8;
	self.damage = 30;
	self.lastX = 0;
	self.lastY = 0;
	self.isBoss = true;
	// Tint boss dark red to distinguish from regular viruses
	bossGraphics.tint = 0x880000;
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		// Move towards player
		if (playerRobot) {
			var dx = playerRobot.x - self.x;
			var dy = playerRobot.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				self.x += dx / distance * self.speed;
				self.y += dy / distance * self.speed;
			}
			// Attack player if close enough
			if (distance < 150) {
				playerRobot.takeDamage(self.damage * 0.15); // More damage per frame when close
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		tween(bossGraphics, {
			tint: 0xff0000
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(bossGraphics, {
					tint: 0x880000
				}, {
					duration: 100
				});
			}
		});
		if (self.health <= 0) {
			self.destroy();
			return true; // Boss destroyed
		}
		return false;
	};
	return self;
});
var EnemyVirus = Container.expand(function () {
	var self = Container.call(this);
	var virusGraphics = self.attachAsset('enemyVirus', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 30;
	self.speed = 2;
	self.damage = 10;
	self.lastX = 0;
	self.lastY = 0;
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		// Move towards player
		if (playerRobot) {
			var dx = playerRobot.x - self.x;
			var dy = playerRobot.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				self.x += dx / distance * self.speed;
				self.y += dy / distance * self.speed;
			}
			// Attack player if close enough
			if (distance < 100) {
				playerRobot.takeDamage(self.damage * 0.1); // Damage per frame when close
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		tween(virusGraphics, {
			tint: 0xff0000
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(virusGraphics, {
					tint: 0xffffff
				}, {
					duration: 100
				});
			}
		});
		if (self.health <= 0) {
			self.destroy();
			return true; // Virus destroyed
		}
		return false;
	};
	return self;
});
var Laser = Container.expand(function () {
	var self = Container.call(this);
	var laserGraphics = self.attachAsset('laser', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.damage = 25;
	self.targetX = 0;
	self.targetY = 0;
	self.directionX = 0;
	self.directionY = 0;
	self.setTarget = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			self.directionX = dx / distance;
			self.directionY = dy / distance;
		}
		// Rotate laser to face target
		laserGraphics.rotation = Math.atan2(dy, dx);
	};
	self.update = function () {
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Remove laser if it goes off screen
		if (self.x < -50 || self.x > 2098 || self.y < -50 || self.y > 2782) {
			self.destroy();
		}
	};
	return self;
});
var PlayerRobot = Container.expand(function () {
	var self = Container.call(this);
	var robotGraphics = self.attachAsset('playerRobot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.maxHealth = 100;
	self.fireRate = 20; // Fire every 20 ticks
	self.fireCooldown = 0;
	self.superAbility = 0; // Super ability charge (0-100)
	self.maxSuperAbility = 100;
	self.update = function () {
		if (self.fireCooldown > 0) {
			self.fireCooldown--;
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		// Flash red when taking damage
		tween(robotGraphics, {
			tint: 0xff0000
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(robotGraphics, {
					tint: 0xffffff
				}, {
					duration: 200
				});
			}
		});
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	self.canFire = function () {
		return self.fireCooldown <= 0;
	};
	self.fire = function () {
		if (self.canFire()) {
			self.fireCooldown = self.fireRate;
			return true;
		}
		return false;
	};
	self.useSuperAbility = function () {
		if (self.superAbility >= 100) {
			self.superAbility = 0;
			return true;
		}
		return false;
	};
	return self;
});
var TankRobot = PlayerRobot.expand(function () {
	var self = PlayerRobot.call(this);
	var robotGraphics = self.attachAsset('tankRobot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 150;
	self.maxHealth = 150;
	self.fireRate = 30; // Slower firing
	self.speed = 0.7; // Slower movement
	robotGraphics.tint = 0x808080; // Gray tint
	return self;
});
var SpeedRobot = PlayerRobot.expand(function () {
	var self = PlayerRobot.call(this);
	var robotGraphics = self.attachAsset('speedRobot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 75;
	self.maxHealth = 75;
	self.fireRate = 15; // Faster firing
	self.speed = 1.5; // Faster movement
	robotGraphics.tint = 0x00FF80; // Green-blue tint
	return self;
});
var NinjaRobot = PlayerRobot.expand(function () {
	var self = PlayerRobot.call(this);
	var robotGraphics = self.attachAsset('ninjaRobot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 60;
	self.maxHealth = 60;
	self.fireRate = 10; // Very fast firing
	self.speed = 2.0; // Very fast movement
	robotGraphics.tint = 0x4040FF; // Purple tint
	return self;
});
var HeavyRobot = PlayerRobot.expand(function () {
	var self = PlayerRobot.call(this);
	var robotGraphics = self.attachAsset('heavyRobot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 200;
	self.maxHealth = 200;
	self.fireRate = 40; // Much slower firing
	self.speed = 0.5; // Much slower movement
	robotGraphics.tint = 0xFF8000; // Orange tint
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'health'; // 'health', 'weapon', 'shield'
	self.collected = false;
	// Floating animation
	tween(powerGraphics, {
		y: powerGraphics.y - 20
	}, {
		duration: 1000,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tween(powerGraphics, {
				y: powerGraphics.y + 20
			}, {
				duration: 1000,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					if (!self.collected) {
						// Restart floating animation
						tween(powerGraphics, {
							y: powerGraphics.y - 20
						}, {
							duration: 1000,
							easing: tween.easeInOut
						});
					}
				}
			});
		}
	});
	self.collect = function () {
		if (!self.collected) {
			self.collected = true;
			LK.getSound('power_up').play();
			// Recharge super ability
			playerRobot.superAbility = Math.min(playerRobot.superAbility + 25, playerRobot.maxSuperAbility);
			// Scale up and fade out effect
			tween(powerGraphics, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					self.destroy();
				}
			});
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Game variables
var game = new LK.Game({
	backgroundColor: 0x111111
});

/**** 
* Game Code
****/ 
// Initialize assets for the robot vs virus battle game
// Game variables
var playerRobot;
var characterSelectButton;
var characterSelectText;
var character1Button;
var character2Button;
var character3Button;
var character4Button;
var character5Button;
var startGameButton;
var enemies = [];
var lasers = [];
var powerUps = [];
var dragNode = null;
var wave = 1;
var enemySpawnTimer = 0;
var powerUpSpawnTimer = 0;
var lastBossWave = 0;
var bossActive = false;
var gameState = 'menu'; // 'menu', 'characterSelect', or 'playing' 
var startButton;
var titleText;
var instructionText;
var selectedCharacter = 'playerRobot'; // Default character
var characterPreviewRobots = []; // Array to hold preview robots
// Create arena background
var arena = game.addChild(LK.getAsset('arena', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
}));
// Create start menu elements
titleText = new Text2('ROBOT vs VIRUS', {
	size: 120,
	fill: 0x00FF00
});
titleText.anchor.set(0.5, 0.5);
titleText.x = 1024;
titleText.y = 800;
game.addChild(titleText);
instructionText = new Text2('Tap to Start\n\nDrag robot to move\nKill viruses to earn points\nCollect yellow orbs for super ability', {
	size: 60,
	fill: 0xFFFFFF
});
instructionText.anchor.set(0.5, 0.5);
instructionText.x = 1024;
instructionText.y = 1300;
game.addChild(instructionText);
// Add character selection button
characterSelectButton = new Text2('CHARACTER SELECT', {
	size: 80,
	fill: 0x00FFFF
});
characterSelectButton.anchor.set(0.5, 0.5);
characterSelectButton.x = 1024;
characterSelectButton.y = 1500;
game.addChild(characterSelectButton);
// Create character selection screen elements (hidden initially)
characterSelectText = new Text2('SELECT CHARACTER', {
	size: 100,
	fill: 0x00FF00
});
characterSelectText.anchor.set(0.5, 0.5);
characterSelectText.x = 1024;
characterSelectText.y = 500;
characterSelectText.visible = false;
game.addChild(characterSelectText);
character1Button = new Text2('STANDARD ROBOT\nBalanced Stats', {
	size: 60,
	fill: 0x0080FF
});
character1Button.anchor.set(0.5, 0.5);
character1Button.x = 1024;
character1Button.y = 800;
character1Button.visible = false;
game.addChild(character1Button);
character2Button = new Text2('SPEED ROBOT\nFast & Agile', {
	size: 60,
	fill: 0x00FF80
});
character2Button.anchor.set(0.5, 0.5);
character2Button.x = 1024;
character2Button.y = 950;
character2Button.visible = false;
game.addChild(character2Button);
character3Button = new Text2('TANK ROBOT\nHigh Health', {
	size: 60,
	fill: 0x808080
});
character3Button.anchor.set(0.5, 0.5);
character3Button.x = 1024;
character3Button.y = 1100;
character3Button.visible = false;
game.addChild(character3Button);
var character4Button = new Text2('NINJA ROBOT\nSuper Fast', {
	size: 60,
	fill: 0x4040FF
});
character4Button.anchor.set(0.5, 0.5);
character4Button.x = 1024;
character4Button.y = 1250;
character4Button.visible = false;
game.addChild(character4Button);
var character5Button = new Text2('HEAVY ROBOT\nMaximum Armor', {
	size: 60,
	fill: 0xFF8000
});
character5Button.anchor.set(0.5, 0.5);
character5Button.x = 1024;
character5Button.y = 1400;
character5Button.visible = false;
game.addChild(character5Button);
var startGameButton = new Text2('START GAME', {
	size: 80,
	fill: 0x00FF00
});
startGameButton.anchor.set(0.5, 0.5);
startGameButton.x = 1024;
startGameButton.y = 1550;
startGameButton.visible = false;
game.addChild(startGameButton);
backButton = new Text2('BACK', {
	size: 60,
	fill: 0xFFFFFF
});
backButton.anchor.set(0.5, 0.5);
backButton.x = 1024;
backButton.y = 1650;
backButton.visible = false;
game.addChild(backButton);
// Player robot will be created when game starts
playerRobot = null;
// Create UI elements (hidden initially)
var scoreText = new Text2('Robot Score: 0', {
	size: 60,
	fill: 0x00FF00
});
scoreText.anchor.set(0, 0);
scoreText.visible = false;
LK.gui.topRight.addChild(scoreText);
var healthText = new Text2('Health: 100', {
	size: 60,
	fill: 0xFF0000
});
healthText.anchor.set(0, 0);
healthText.y = 70;
healthText.visible = false;
LK.gui.topRight.addChild(healthText);
var waveText = new Text2('Wave: 1', {
	size: 60,
	fill: 0xFFFFFF
});
waveText.anchor.set(0.5, 0);
waveText.visible = false;
LK.gui.top.addChild(waveText);
var scoreDisplayText = new Text2('Score: 0', {
	size: 60,
	fill: 0x00FF00
});
scoreDisplayText.anchor.set(0.5, 0);
scoreDisplayText.y = 70;
scoreDisplayText.visible = false;
LK.gui.top.addChild(scoreDisplayText);
var superAbilityText = new Text2('Super: 0%', {
	size: 60,
	fill: 0xFFFF00
});
superAbilityText.anchor.set(0, 0);
superAbilityText.y = 140;
superAbilityText.visible = false;
LK.gui.topRight.addChild(superAbilityText);
// Touch/mouse controls
function handleMove(x, y, obj) {
	if (dragNode && playerRobot) {
		// Keep player within arena bounds
		var newX = Math.max(200, Math.min(1848, x));
		var newY = Math.max(200, Math.min(2532, y));
		playerRobot.x = newX;
		playerRobot.y = newY;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	if (gameState === 'menu') {
		var localPos = game.toLocal({
			x: x,
			y: y
		});
		// Check if tapping on character select button
		if (localPos.y > 1450 && localPos.y < 1550 && localPos.x > 500 && localPos.x < 1500) {
			// Show character selection window
			showCharacterSelectWindow();
		} else {
			// Start the game with default character
			startGame();
		}
	} else if (gameState === 'characterSelect') {
		var localPos = game.toLocal({
			x: x,
			y: y
		});
		// Check character button taps
		if (localPos.y > 750 && localPos.y < 850 && localPos.x > 500 && localPos.x < 1500) {
			selectedCharacter = 'standard';
			updateCharacterButtons();
		} else if (localPos.y > 900 && localPos.y < 1000 && localPos.x > 500 && localPos.x < 1500) {
			selectedCharacter = 'speed';
			updateCharacterButtons();
		} else if (localPos.y > 1050 && localPos.y < 1150 && localPos.x > 500 && localPos.x < 1500) {
			selectedCharacter = 'tank';
			updateCharacterButtons();
		} else if (localPos.y > 1200 && localPos.y < 1300 && localPos.x > 500 && localPos.x < 1500) {
			selectedCharacter = 'ninja';
			updateCharacterButtons();
		} else if (localPos.y > 1350 && localPos.y < 1450 && localPos.x > 500 && localPos.x < 1500) {
			selectedCharacter = 'heavy';
			updateCharacterButtons();
		} else if (localPos.y > 1500 && localPos.y < 1600 && localPos.x > 500 && localPos.x < 1500) {
			// Start game button
			startGame();
		} else if (localPos.y > 1600 && localPos.y < 1700 && localPos.x > 500 && localPos.x < 1500) {
			// Back button
			hideCharacterSelectWindow();
		}
	} else if (gameState === 'playing') {
		dragNode = playerRobot;
		handleMove(x, y, obj);
	}
};
// Function to show character selection window
function showCharacterSelectWindow() {
	gameState = 'characterSelect';
	// Hide main menu elements
	titleText.visible = false;
	instructionText.visible = false;
	characterSelectButton.visible = false;
	// Change title text to "CHARACTER SKINS"
	characterSelectText.setText('CHARACTER SKINS');
	// Create character preview robots if they don't exist
	if (characterPreviewRobots.length === 0) {
		// Standard Robot preview
		var standardPreview = game.addChild(LK.getAsset('playerRobot', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700,
			y: 800,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		characterPreviewRobots.push(standardPreview);
		// Speed Robot preview
		var speedPreview = game.addChild(LK.getAsset('speedRobot', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700,
			y: 950,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		speedPreview.tint = 0x00FF80;
		characterPreviewRobots.push(speedPreview);
		// Tank Robot preview
		var tankPreview = game.addChild(LK.getAsset('tankRobot', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700,
			y: 1100,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		tankPreview.tint = 0x808080;
		characterPreviewRobots.push(tankPreview);
		// Ninja Robot preview
		var ninjaPreview = game.addChild(LK.getAsset('ninjaRobot', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700,
			y: 1250,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		ninjaPreview.tint = 0x4040FF;
		characterPreviewRobots.push(ninjaPreview);
		// Heavy Robot preview
		var heavyPreview = game.addChild(LK.getAsset('heavyRobot', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700,
			y: 1400,
			scaleX: 0.6,
			scaleY: 0.6
		}));
		heavyPreview.tint = 0xFF8000;
		characterPreviewRobots.push(heavyPreview);
	}
	// Show character preview robots
	for (var i = 0; i < characterPreviewRobots.length; i++) {
		characterPreviewRobots[i].visible = true;
	}
	// Show character selection window elements
	characterSelectText.visible = true;
	character1Button.visible = true;
	character2Button.visible = true;
	character3Button.visible = true;
	character4Button.visible = true;
	character5Button.visible = true;
	startGameButton.visible = true;
	backButton.visible = true;
	updateCharacterButtons();
}
// Function to hide character selection window
function hideCharacterSelectWindow() {
	gameState = 'menu';
	// Hide character preview robots
	for (var i = 0; i < characterPreviewRobots.length; i++) {
		characterPreviewRobots[i].visible = false;
	}
	// Hide character selection window elements
	characterSelectText.visible = false;
	character1Button.visible = false;
	character2Button.visible = false;
	character3Button.visible = false;
	character4Button.visible = false;
	character5Button.visible = false;
	startGameButton.visible = false;
	backButton.visible = false;
	// Show main menu elements
	titleText.visible = true;
	instructionText.visible = true;
	characterSelectButton.visible = true;
}
// Function to update character button appearance based on selection
function updateCharacterButtons() {
	// Reset all button colors
	character1Button.tint = 0xFFFFFF;
	character2Button.tint = 0xFFFFFF;
	character3Button.tint = 0xFFFFFF;
	character4Button.tint = 0xFFFFFF;
	character5Button.tint = 0xFFFFFF;
	// Highlight selected character button
	if (selectedCharacter === 'standard') {
		character1Button.tint = 0x00FF00;
	} else if (selectedCharacter === 'speed') {
		character2Button.tint = 0x00FF00;
	} else if (selectedCharacter === 'tank') {
		character3Button.tint = 0x00FF00;
	} else if (selectedCharacter === 'ninja') {
		character4Button.tint = 0x00FF00;
	} else if (selectedCharacter === 'heavy') {
		character5Button.tint = 0x00FF00;
	}
}
// Function to start the game
function startGame() {
	gameState = 'playing';
	// Hide character preview robots
	for (var i = 0; i < characterPreviewRobots.length; i++) {
		characterPreviewRobots[i].visible = false;
	}
	titleText.visible = false;
	instructionText.visible = false;
	characterSelectButton.visible = false;
	characterSelectText.visible = false;
	character1Button.visible = false;
	character2Button.visible = false;
	character3Button.visible = false;
	character4Button.visible = false;
	character5Button.visible = false;
	startGameButton.visible = false;
	backButton.visible = false;
	// Create the selected robot type
	if (playerRobot) {
		playerRobot.destroy();
	}
	if (selectedCharacter === 'standard') {
		playerRobot = game.addChild(new PlayerRobot());
	} else if (selectedCharacter === 'speed') {
		playerRobot = game.addChild(new SpeedRobot());
	} else if (selectedCharacter === 'tank') {
		playerRobot = game.addChild(new TankRobot());
	} else if (selectedCharacter === 'ninja') {
		playerRobot = game.addChild(new NinjaRobot());
	} else if (selectedCharacter === 'heavy') {
		playerRobot = game.addChild(new HeavyRobot());
	} else {
		playerRobot = game.addChild(new PlayerRobot());
	}
	playerRobot.x = 1024;
	playerRobot.y = 1366;
	playerRobot.visible = true;
	scoreText.visible = true;
	healthText.visible = true;
	waveText.visible = true;
	superAbilityText.visible = true;
	scoreDisplayText.visible = true;
}
game.up = function (x, y, obj) {
	dragNode = null;
};
// Helper function to find closest virus
function findClosestEnemy() {
	var closestEnemy = null;
	var closestDistance = Infinity;
	for (var i = 0; i < enemies.length; i++) {
		var enemy = enemies[i];
		var dx = enemy.x - playerRobot.x;
		var dy = enemy.y - playerRobot.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < closestDistance) {
			closestDistance = distance;
			closestEnemy = enemy;
		}
	}
	return closestEnemy;
}
// Spawn virus function
function spawnEnemy() {
	var enemy = new EnemyVirus();
	// Spawn at random edge of arena
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			enemy.x = 200 + Math.random() * 1648;
			enemy.y = 100;
			break;
		case 1:
			// Right
			enemy.x = 1948;
			enemy.y = 200 + Math.random() * 2332;
			break;
		case 2:
			// Bottom
			enemy.x = 200 + Math.random() * 1648;
			enemy.y = 2632;
			break;
		case 3:
			// Left
			enemy.x = 100;
			enemy.y = 200 + Math.random() * 2332;
			break;
	}
	enemies.push(enemy);
	game.addChild(enemy);
}
// Spawn power-up function
function spawnPowerUp() {
	var powerUp = new PowerUp();
	powerUp.x = 300 + Math.random() * 1448;
	powerUp.y = 300 + Math.random() * 2132;
	powerUps.push(powerUp);
	game.addChild(powerUp);
}
// Spawn boss function
function spawnBoss() {
	var boss = new BossVirus();
	// Spawn boss at top center
	boss.x = 1024;
	boss.y = 100;
	enemies.push(boss);
	game.addChild(boss);
	bossActive = true;
}
// Main game update loop
game.update = function () {
	// Only update game logic when playing
	if (gameState !== 'playing') {
		return;
	}
	// Update UI
	scoreText.setText('Robot Kills: ' + LK.getScore());
	healthText.setText('Health: ' + Math.max(0, playerRobot.health));
	waveText.setText('Wave: ' + wave);
	superAbilityText.setText('Super: ' + Math.floor(playerRobot.superAbility) + '%');
	scoreDisplayText.setText('Score: ' + LK.getScore());
	// Robot auto-fire at closest virus
	if (playerRobot.canFire()) {
		var target = findClosestEnemy();
		if (target) {
			if (playerRobot.fire()) {
				var laser = new Laser();
				laser.x = playerRobot.x;
				laser.y = playerRobot.y;
				laser.setTarget(target.x, target.y);
				lasers.push(laser);
				game.addChild(laser);
				LK.getSound('laser_fire').play();
			}
		}
	}
	// Use super ability when fully charged
	if (playerRobot.superAbility >= 100 && enemies.length > 0) {
		if (playerRobot.useSuperAbility()) {
			// Fire lasers at all enemies
			for (var k = 0; k < enemies.length; k++) {
				var superLaser = new Laser();
				superLaser.x = playerRobot.x;
				superLaser.y = playerRobot.y;
				superLaser.setTarget(enemies[k].x, enemies[k].y);
				lasers.push(superLaser);
				game.addChild(superLaser);
			}
			LK.getSound('laser_fire').play();
			// Flash robot yellow to show super ability used
			tween(playerRobot.children[0], {
				tint: 0xffff00
			}, {
				duration: 200,
				onFinish: function onFinish() {
					tween(playerRobot.children[0], {
						tint: 0xffffff
					}, {
						duration: 200
					});
				}
			});
		}
	}
	// Update and check laser collisions
	for (var i = lasers.length - 1; i >= 0; i--) {
		var laser = lasers[i];
		if (laser.destroyed) {
			lasers.splice(i, 1);
			continue;
		}
		// Check laser vs enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (laser.intersects(enemy)) {
				if (enemy.takeDamage(laser.damage)) {
					// Virus destroyed - award points to robot
					var points = enemy.isBoss ? 200 : 10; // Boss gives 200 points, regular virus gives 10
					LK.setScore(LK.getScore() + points);
					LK.getSound('enemy_destroy').play();
					// Check if boss was destroyed
					if (enemy.isBoss) {
						bossActive = false;
					}
					// Flash robot blue to show successful kill
					tween(playerRobot.children[0], {
						tint: 0x00ffff
					}, {
						duration: 150,
						onFinish: function onFinish() {
							tween(playerRobot.children[0], {
								tint: 0xffffff
							}, {
								duration: 150
							});
						}
					});
					enemies.splice(j, 1);
				}
				laser.destroy();
				lasers.splice(i, 1);
				break;
			}
		}
	}
	// Check power-up collection
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		if (powerUp.intersects(playerRobot)) {
			powerUp.collect();
			powerUps.splice(i, 1);
		} else if (powerUp.destroyed) {
			powerUps.splice(i, 1);
		}
	}
	// Remove destroyed enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		if (enemies[i].destroyed) {
			enemies.splice(i, 1);
		}
	}
	// Spawn enemies based on wave
	enemySpawnTimer++;
	var spawnRate = Math.max(60 - wave * 5, 20); // Faster spawning each wave
	if (enemySpawnTimer >= spawnRate) {
		spawnEnemy();
		enemySpawnTimer = 0;
	}
	// Spawn power-ups occasionally
	powerUpSpawnTimer++;
	if (powerUpSpawnTimer >= 600) {
		// Every 10 seconds
		spawnPowerUp();
		powerUpSpawnTimer = 0;
	}
	// Check wave progression
	if (LK.ticks % 1800 === 0) {
		// Every 30 seconds
		wave++;
		// Spawn boss every 5 waves
		if (wave - lastBossWave >= 5 && !bossActive) {
			spawnBoss();
			lastBossWave = wave;
		}
	}
	// Low health warning effect (removed screen shake as LK.effects.shakeScreen doesn't exist)
	if (playerRobot.health < 30 && LK.ticks % 10 === 0) {
		// Flash the player robot red to indicate low health
		tween(playerRobot.children[0], {
			tint: 0xff0000
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(playerRobot.children[0], {
					tint: 0xffffff
				}, {
					duration: 100
				});
			}
		});
	}
};