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

/**** 
* Classes
****/ 
var BossCreep = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('bossCreep', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 12000; // Base health for first boss (30x increase)
	self.maxHealth = 12000;
	self.speed = 0.8; // Slower than elite creeps
	self.damage = 50; // More damage than elite creeps
	self.targetX = 0;
	self.targetY = 0;
	self.hasReachedPlayer = false;
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			return true; // Return true if boss is dead
		}
		return false;
	};
	self.update = function () {
		// Reset flag to allow continued movement after hitting player
		self.hasReachedPlayer = false;
		// Continuously update target to player's current position
		self.targetX = player.x;
		self.targetY = player.y;
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Calculate avoidance force from other creeps
			var avoidanceX = 0;
			var avoidanceY = 0;
			var avoidanceRadius = 180; // Largest avoidance radius for boss creeps
			for (var i = 0; i < creeps.length; i++) {
				var otherCreep = creeps[i];
				if (otherCreep !== self) {
					var otherDx = self.x - otherCreep.x;
					var otherDy = self.y - otherCreep.y;
					var otherDistance = Math.sqrt(otherDx * otherDx + otherDy * otherDy);
					if (otherDistance < avoidanceRadius && otherDistance > 0) {
						var avoidanceStrength = (avoidanceRadius - otherDistance) / avoidanceRadius;
						avoidanceX += otherDx / otherDistance * avoidanceStrength;
						avoidanceY += otherDy / otherDistance * avoidanceStrength;
					}
				}
			}
			// Combine movement towards player with avoidance
			var moveX = dx / distance * self.speed + avoidanceX * 0.3;
			var moveY = dy / distance * self.speed + avoidanceY * 0.3;
			self.x += moveX;
			self.y += moveY;
		} else {
			self.hasReachedPlayer = true;
		}
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.velocityX = 0;
	self.velocityY = 0;
	self.damage = 20;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Creep = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('creep', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 60; // Base health requiring 3 hits (20 damage per hit)
	self.maxHealth = 60;
	self.speed = 2;
	self.damage = 15;
	self.targetX = 0;
	self.targetY = 0;
	self.hasReachedPlayer = false;
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			return true; // Return true if creep is dead
		}
		return false;
	};
	self.update = function () {
		// Reset flag to allow continued movement after hitting player
		self.hasReachedPlayer = false;
		// Continuously update target to player's current position
		self.targetX = player.x;
		self.targetY = player.y;
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Calculate avoidance force from other creeps
			var avoidanceX = 0;
			var avoidanceY = 0;
			var avoidanceRadius = 80; // Distance to avoid other creeps
			for (var i = 0; i < creeps.length; i++) {
				var otherCreep = creeps[i];
				if (otherCreep !== self) {
					var otherDx = self.x - otherCreep.x;
					var otherDy = self.y - otherCreep.y;
					var otherDistance = Math.sqrt(otherDx * otherDx + otherDy * otherDy);
					if (otherDistance < avoidanceRadius && otherDistance > 0) {
						var avoidanceStrength = (avoidanceRadius - otherDistance) / avoidanceRadius;
						avoidanceX += otherDx / otherDistance * avoidanceStrength;
						avoidanceY += otherDy / otherDistance * avoidanceStrength;
					}
				}
			}
			// Combine movement towards player with avoidance
			var moveX = dx / distance * self.speed + avoidanceX * 0.5;
			var moveY = dy / distance * self.speed + avoidanceY * 0.5;
			self.x += moveX;
			self.y += moveY;
		} else {
			self.hasReachedPlayer = true;
		}
	};
	return self;
});
var EliteCreep = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('eliteCreep', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 150; // Much higher base health
	self.maxHealth = 150;
	self.speed = 1.2; // Slower than regular creeps
	self.damage = 35; // More damage than regular creeps
	self.targetX = 0;
	self.targetY = 0;
	self.hasReachedPlayer = false;
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			return true; // Return true if creep is dead
		}
		return false;
	};
	self.update = function () {
		// Reset flag to allow continued movement after hitting player
		self.hasReachedPlayer = false;
		// Continuously update target to player's current position
		self.targetX = player.x;
		self.targetY = player.y;
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			// Calculate avoidance force from other creeps
			var avoidanceX = 0;
			var avoidanceY = 0;
			var avoidanceRadius = 120; // Larger avoidance radius for elite creeps
			for (var i = 0; i < creeps.length; i++) {
				var otherCreep = creeps[i];
				if (otherCreep !== self) {
					var otherDx = self.x - otherCreep.x;
					var otherDy = self.y - otherCreep.y;
					var otherDistance = Math.sqrt(otherDx * otherDx + otherDy * otherDy);
					if (otherDistance < avoidanceRadius && otherDistance > 0) {
						var avoidanceStrength = (avoidanceRadius - otherDistance) / avoidanceRadius;
						avoidanceX += otherDx / otherDistance * avoidanceStrength;
						avoidanceY += otherDy / otherDistance * avoidanceStrength;
					}
				}
			}
			// Combine movement towards player with avoidance
			var moveX = dx / distance * self.speed + avoidanceX * 0.5;
			var moveY = dy / distance * self.speed + avoidanceY * 0.5;
			self.x += moveX;
			self.y += moveY;
		} else {
			self.hasReachedPlayer = true;
		}
	};
	return self;
});
var Pickup = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type;
	var assetName;
	if (type === 'health') {
		assetName = 'healthPotion';
	} else if (type === 'damage') {
		assetName = 'damageUpgrade';
	} else if (type === 'speed') {
		assetName = 'damageUpgrade'; // Reuse red upgrade for speed
	} else if (type === 'attackSpeed') {
		assetName = 'damageUpgrade'; // Reuse red upgrade for attack speed
	} else if (type === 'shield') {
		assetName = 'shieldUpgrade';
	}
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifetime = 1800; // 30 seconds at 60fps
	self.update = function () {
		self.lifetime--;
		if (self.lifetime < 300) {
			// Start fading at 5 seconds remaining
			graphics.alpha = self.lifetime / 300;
		}
		// Magnetic pull effect when player is close
		if (player) {
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// Start pulling when within 150 pixels
			if (distance < 150 && distance > 10) {
				var pullSpeed = 8; // Fast pull speed
				var normalizedX = dx / distance;
				var normalizedY = dy / distance;
				self.x += normalizedX * pullSpeed;
				self.y += normalizedY * pullSpeed;
			}
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.maxHealth = 100;
	self.health = 100;
	self.defense = 0;
	self.baseDamage = 20; // Base damage that never changes
	self.damage = 20; // Current damage (base + upgrades)
	self.weaponUpgrades = 0; // Track weapon upgrades for double shot
	self.lastShootTime = 0;
	self.shootCooldown = 40; // Fixed cooldown that never changes
	self.baseSpeed = 4; // Base movement speed
	self.moveSpeed = 4; // Current movement speed (base + upgrades)
	self.shieldActive = false;
	self.shieldHealth = 0;
	self.shieldMaxHealth = 80;
	self.shieldDuration = 0; // In game ticks (60 fps)
	self.shieldAura = null;
	// Movement direction tracking
	self.lastX = 0;
	self.lastY = 0;
	self.currentDirection = 0; // 0 = north (default)
	self.takeDamage = function (amount) {
		if (self.shieldActive && self.shieldHealth > 0) {
			// Shield absorbs damage
			self.shieldHealth -= amount;
			if (self.shieldHealth <= 0) {
				// Shield broken
				self.shieldHealth = 0;
				self.shieldActive = false;
				self.shieldDuration = 0;
				if (self.shieldAura) {
					self.shieldAura.destroy();
					self.shieldAura = null;
				}
			}
			// Flash blue when shield takes damage
			tween(graphics, {
				tint: 0x4444FF
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(graphics, {
						tint: 0xFFFFFF
					}, {
						duration: 100
					});
				}
			});
		} else {
			// Normal damage to health
			var actualDamage = Math.max(1, amount - self.defense);
			self.health -= actualDamage;
			if (self.health < 0) self.health = 0;
			// Flash red when taking damage
			tween(graphics, {
				tint: 0xFF0000
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(graphics, {
						tint: 0xFFFFFF
					}, {
						duration: 100
					});
				}
			});
		}
		LK.getSound('hit').play();
	};
	self.heal = function (amount) {
		self.health = Math.min(self.maxHealth, self.health + amount);
	};
	self.addDamage = function (amount) {
		self.damage += amount;
		self.weaponUpgrades++; // Track weapon upgrades
	};
	self.addSpeed = function (amount) {
		self.moveSpeed += amount;
	};
	self.activateShield = function () {
		if (!self.shieldActive) {
			// First time activation
			self.shieldActive = true;
			self.shieldHealth = 40; // Start with 40 hit points
			self.shieldDuration = 1800; // 30 seconds at 60fps
			// Create shield visual
			self.shieldAura = self.addChild(LK.getAsset('shieldAura', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.6,
				tint: 0x6666FF
			}));
		} else {
			// Shield already active, add duration up to max 180 seconds
			self.shieldDuration = Math.min(10800, self.shieldDuration + 1800); // Max 180 seconds
			// Add shield health up to max 80 hit points
			self.shieldHealth = Math.min(80, self.shieldHealth + 40);
			// Ensure shield visual is displayed
			if (!self.shieldAura) {
				self.shieldAura = self.addChild(LK.getAsset('shieldAura', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.6,
					tint: 0x6666FF
				}));
			}
		}
	};
	self.canShoot = function () {
		return LK.ticks - self.lastShootTime > self.shootCooldown;
	};
	self.shoot = function (targetX, targetY) {
		if (!self.canShoot()) return null;
		self.lastShootTime = LK.ticks;
		var bullets = [];
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var normalizedX = dx / distance;
		var normalizedY = dy / distance;
		var angle = Math.atan2(normalizedY, normalizedX);
		if (self.weaponUpgrades >= 30) {
			// Quad shot for 30+ upgrades
			var spreadAngle = 0.25;
			// Center bullet
			var bullet1 = new Bullet();
			bullet1.x = self.x;
			bullet1.y = self.y;
			bullet1.velocityX = normalizedX * bullet1.speed;
			bullet1.velocityY = normalizedY * bullet1.speed;
			bullet1.damage = self.damage;
			bullets.push(bullet1);
			// Left bullet
			var bullet2 = new Bullet();
			bullet2.x = self.x;
			bullet2.y = self.y;
			bullet2.velocityX = Math.cos(angle - spreadAngle) * bullet2.speed;
			bullet2.velocityY = Math.sin(angle - spreadAngle) * bullet2.speed;
			bullet2.damage = self.damage;
			bullets.push(bullet2);
			// Right bullet
			var bullet3 = new Bullet();
			bullet3.x = self.x;
			bullet3.y = self.y;
			bullet3.velocityX = Math.cos(angle + spreadAngle) * bullet3.speed;
			bullet3.velocityY = Math.sin(angle + spreadAngle) * bullet3.speed;
			bullet3.damage = self.damage;
			bullets.push(bullet3);
			// Far left bullet
			var bullet4 = new Bullet();
			bullet4.x = self.x;
			bullet4.y = self.y;
			bullet4.velocityX = Math.cos(angle - spreadAngle * 2) * bullet4.speed;
			bullet4.velocityY = Math.sin(angle - spreadAngle * 2) * bullet4.speed;
			bullet4.damage = self.damage;
			bullets.push(bullet4);
		} else if (self.weaponUpgrades >= 20) {
			// Triple shot V pattern at 20+ upgrades
			var spreadAngle = 0.3; // Wider spread for V pattern
			// Center bullet
			var bullet1 = new Bullet();
			bullet1.x = self.x;
			bullet1.y = self.y;
			bullet1.velocityX = normalizedX * bullet1.speed;
			bullet1.velocityY = normalizedY * bullet1.speed;
			bullet1.damage = self.damage;
			bullets.push(bullet1);
			// Left bullet
			var bullet2 = new Bullet();
			bullet2.x = self.x;
			bullet2.y = self.y;
			bullet2.velocityX = Math.cos(angle - spreadAngle) * bullet2.speed;
			bullet2.velocityY = Math.sin(angle - spreadAngle) * bullet2.speed;
			bullet2.damage = self.damage;
			bullets.push(bullet2);
			// Right bullet
			var bullet3 = new Bullet();
			bullet3.x = self.x;
			bullet3.y = self.y;
			bullet3.velocityX = Math.cos(angle + spreadAngle) * bullet3.speed;
			bullet3.velocityY = Math.sin(angle + spreadAngle) * bullet3.speed;
			bullet3.damage = self.damage;
			bullets.push(bullet3);
		} else if (self.weaponUpgrades >= 10) {
			// Double shot side by side at 10+ upgrades
			var offsetDistance = 20; // Distance between bullets
			var perpX = -normalizedY; // Perpendicular to direction
			var perpY = normalizedX;
			// First bullet (left side)
			var bullet1 = new Bullet();
			bullet1.x = self.x + perpX * offsetDistance;
			bullet1.y = self.y + perpY * offsetDistance;
			bullet1.velocityX = normalizedX * bullet1.speed;
			bullet1.velocityY = normalizedY * bullet1.speed;
			bullet1.damage = self.damage;
			bullets.push(bullet1);
			// Second bullet (right side)
			var bullet2 = new Bullet();
			bullet2.x = self.x - perpX * offsetDistance;
			bullet2.y = self.y - perpY * offsetDistance;
			bullet2.velocityX = normalizedX * bullet2.speed;
			bullet2.velocityY = normalizedY * bullet2.speed;
			bullet2.damage = self.damage;
			bullets.push(bullet2);
		} else {
			// Single shot for upgrades < 10
			var bullet1 = new Bullet();
			bullet1.x = self.x;
			bullet1.y = self.y;
			bullet1.velocityX = normalizedX * bullet1.speed;
			bullet1.velocityY = normalizedY * bullet1.speed;
			bullet1.damage = self.damage;
			bullets.push(bullet1);
		}
		LK.getSound('shoot').play();
		return bullets;
	};
	self.update = function () {
		// Track movement direction and animate rotation
		if (self.lastX !== undefined && self.lastY !== undefined) {
			var deltaX = self.x - self.lastX;
			var deltaY = self.y - self.lastY;
			var moveDistance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
			// Only update direction if player is actually moving
			if (moveDistance > 0.5) {
				var targetDirection = Math.atan2(deltaY, deltaX);
				// Convert to 0-360 degree system where 0 is north
				targetDirection = targetDirection + Math.PI / 2;
				if (targetDirection < 0) targetDirection += Math.PI * 2;
				if (targetDirection > Math.PI * 2) targetDirection -= Math.PI * 2;
				// Smoothly rotate to face movement direction
				var currentRotation = graphics.rotation;
				var angleDiff = targetDirection - currentRotation;
				// Handle wrap around for shortest rotation path
				if (angleDiff > Math.PI) angleDiff -= Math.PI * 2;
				if (angleDiff < -Math.PI) angleDiff += Math.PI * 2;
				// Apply smooth rotation
				var rotationSpeed = 0.15;
				graphics.rotation += angleDiff * rotationSpeed;
			}
		}
		// Update last position for next frame
		self.lastX = self.x;
		self.lastY = self.y;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game();

/**** 
* Game Code
****/ 
// Add background image
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
}));
var player = null;
var creeps = [];
var bullets = [];
var pickups = [];
var currentWave = 1;
var creepsInWave = 5;
var creepsSpawned = 0;
var eliteCreepsInWave = 1; // Number of elite creeps equals wave number
var eliteCreepsSpawned = 0;
var waveCompleted = false;
var nextWaveTimer = 0;
var spawnTimer = 0;
// Score tracking variables
var gameScore = 0;
// Boss system variables
var currentBoss = null;
var bossWave = false;
// UI Elements
var healthText = new Text2('Health: 100', {
	size: 40,
	fill: 0xFFFFFF
});
healthText.anchor.set(0, 0);
LK.gui.topLeft.addChild(healthText);
healthText.x = 120; // Offset from left edge
var armorText = new Text2('Armor: 0', {
	size: 40,
	fill: 0xFFFFFF
});
armorText.anchor.set(0, 0);
LK.gui.topLeft.addChild(armorText);
armorText.x = 120; // Offset from left edge
armorText.y = 45; // Below health text
var waveText = new Text2('Wave: 1', {
	size: 40,
	fill: 0xFFFFFF
});
waveText.anchor.set(0.5, 0);
LK.gui.top.addChild(waveText);
var scoreText = new Text2('Score: 0', {
	size: 40,
	fill: 0xFFFFFF
});
scoreText.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreText);
// Boss health bar (initially hidden)
var bossHealthBar = new Text2('', {
	size: 35,
	fill: 0xFF4444
});
bossHealthBar.anchor.set(0.5, 0);
LK.gui.top.addChild(bossHealthBar);
bossHealthBar.y = 50;
bossHealthBar.alpha = 0; // Hidden initially
// Shield status text
var shieldText = new Text2('', {
	size: 35,
	fill: 0x4444FF
});
shieldText.anchor.set(0, 0);
LK.gui.topLeft.addChild(shieldText);
shieldText.x = 120; // Offset from left edge
shieldText.y = 90; // Below armor text
// Initialize player
player = game.addChild(new Player());
player.x = 1024;
player.y = 1366;
function spawnCreep() {
	var creep = new Creep();
	// Spawn from random edge
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			creep.x = Math.random() * 2048;
			creep.y = -50;
			break;
		case 1:
			// Right
			creep.x = 2098;
			creep.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			creep.x = Math.random() * 2048;
			creep.y = 2782;
			break;
		case 3:
			// Left
			creep.x = -50;
			creep.y = Math.random() * 2732;
			break;
	}
	creep.targetX = player.x;
	creep.targetY = player.y;
	creep.health += (currentWave - 1) * 20; // Scale health with wave (20 per wave)
	creep.maxHealth = creep.health;
	creeps.push(creep);
	game.addChild(creep);
}
function spawnEliteCreep() {
	var eliteCreep = new EliteCreep();
	// Spawn from random edge
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			eliteCreep.x = Math.random() * 2048;
			eliteCreep.y = -50;
			break;
		case 1:
			// Right
			eliteCreep.x = 2098;
			eliteCreep.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			eliteCreep.x = Math.random() * 2048;
			eliteCreep.y = 2782;
			break;
		case 3:
			// Left
			eliteCreep.x = -50;
			eliteCreep.y = Math.random() * 2732;
			break;
	}
	eliteCreep.targetX = player.x;
	eliteCreep.targetY = player.y;
	eliteCreep.health += (currentWave - 1) * 40; // Scale health with wave (40 per wave for elites)
	eliteCreep.maxHealth = eliteCreep.health;
	creeps.push(eliteCreep);
	game.addChild(eliteCreep);
}
function spawnBoss() {
	var boss = new BossCreep();
	// Spawn from random edge
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			boss.x = Math.random() * 2048;
			boss.y = -75;
			break;
		case 1:
			// Right
			boss.x = 2123;
			boss.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			boss.x = Math.random() * 2048;
			boss.y = 2807;
			break;
		case 3:
			// Left
			boss.x = -75;
			boss.y = Math.random() * 2732;
			break;
	}
	boss.targetX = player.x;
	boss.targetY = player.y;
	// Calculate boss health based on wave (doubles each boss wave)
	var bossNumber = Math.floor(currentWave / 10);
	boss.health = 12000 * Math.pow(2, bossNumber - 1);
	boss.maxHealth = boss.health;
	currentBoss = boss;
	creeps.push(boss);
	game.addChild(boss);
	// Show boss health bar
	bossHealthBar.alpha = 1;
	tween(bossHealthBar, {
		scaleX: 1.1,
		scaleY: 1.1
	}, {
		duration: 300,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			tween(bossHealthBar, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 200
			});
		}
	});
}
function dropPickup(x, y) {
	if (Math.random() < 0.3) {
		// 30% chance to drop something
		var pickupType;
		var rand = Math.random();
		if (rand < 0.2) {
			// Health upgrade frequency increased to 20%
			pickupType = 'health';
		} else if (rand < 0.47) {
			// Damage upgrade frequency reduced to 27%
			pickupType = 'damage';
		} else if (rand < 0.89) {
			// Shield upgrade increased to 42%
			pickupType = 'shield';
		} else {
			// Speed upgrade remains at 11%
			pickupType = 'speed';
		}
		var pickup = new Pickup(pickupType);
		pickup.x = x;
		pickup.y = y;
		pickups.push(pickup);
		game.addChild(pickup);
	}
}
function startNextWave() {
	currentWave++;
	// Check if this is a boss wave (every 10th wave)
	if (currentWave % 10 === 0) {
		bossWave = true;
		creepsInWave = 0; // No regular creeps on boss waves
		eliteCreepsInWave = 0; // No elite creeps on boss waves
	} else {
		bossWave = false;
		creepsInWave = 8 + Math.floor(currentWave * 2.5); // More creeps per wave
		eliteCreepsInWave = currentWave; // Number of elite creeps equals wave number
	}
	creepsSpawned = 0;
	eliteCreepsSpawned = 0;
	waveCompleted = false;
	waveText.setText('Wave: ' + currentWave + (bossWave ? ' (BOSS)' : ''));
}
// Player movement variables
var targetX = 1024;
var targetY = 1366;
var isMoving = false;
game.down = function (x, y, obj) {
	targetX = x;
	targetY = y;
	isMoving = true;
};
game.move = function (x, y, obj) {
	if (isMoving) {
		targetX = x;
		targetY = y;
	}
};
game.up = function (x, y, obj) {
	isMoving = false;
};
game.update = function () {
	// Process pickups FIRST to ensure upgrades always activate before any damage
	for (var i = pickups.length - 1; i >= 0; i--) {
		var pickup = pickups[i];
		// Check pickup collection using both intersection and distance
		var dx = pickup.x - player.x;
		var dy = pickup.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var collected = pickup.intersects(player) || distance < 50;
		if (collected) {
			// Immediately activate upgrade effect and calculate points
			var pickupPoints = 150; // Default points
			switch (pickup.type) {
				case 'health':
					// Check if player is at full health before healing
					var wasAtFullHealth = player.health >= player.maxHealth;
					player.heal(25);
					// Double points if player was at full health when picking up health potion
					if (wasAtFullHealth) {
						pickupPoints = 300;
					}
					break;
				case 'damage':
					player.addDamage(5);
					break;
				case 'speed':
					player.addSpeed(1);
					break;
				case 'shield':
					player.activateShield();
					break;
			}
			// Give points for collecting upgrades
			gameScore += pickupPoints;
			LK.setScore(LK.getScore() + pickupPoints);
			LK.getSound('pickup').play();
			pickup.destroy();
			pickups.splice(i, 1);
		} else if (pickup.lifetime <= 0) {
			pickup.destroy();
			pickups.splice(i, 1);
		}
	}
	// Player movement
	if (isMoving) {
		var dx = targetX - player.x;
		var dy = targetY - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			player.x += dx / distance * player.moveSpeed;
			player.y += dy / distance * player.moveSpeed;
		}
	}
	// Automatic shooting at closest creep
	if (creeps.length > 0 && player.canShoot()) {
		var closestCreep = null;
		var closestDistance = Infinity;
		for (var i = 0; i < creeps.length; i++) {
			var creep = creeps[i];
			var dx = creep.x - player.x;
			var dy = creep.y - player.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestCreep = creep;
			}
		}
		if (closestCreep) {
			var shotBullets = player.shoot(closestCreep.x, closestCreep.y);
			if (shotBullets) {
				for (var k = 0; k < shotBullets.length; k++) {
					bullets.push(shotBullets[k]);
					game.addChild(shotBullets[k]);
				}
			}
		}
	}
	// Update shield system
	if (player.shieldActive) {
		player.shieldDuration--;
		if (player.shieldDuration <= 0 || player.shieldHealth <= 0) {
			player.shieldActive = false;
			player.shieldHealth = 0;
			player.shieldDuration = 0;
			if (player.shieldAura) {
				player.shieldAura.destroy();
				player.shieldAura = null;
			}
		} else if (player.shieldAura) {
			// Animate shield aura
			player.shieldAura.rotation += 0.05;
			// Flash when shield is about to expire (last 5 seconds)
			if (player.shieldDuration < 300) {
				player.shieldAura.alpha = 0.3 + 0.3 * Math.sin(LK.ticks * 0.3);
			}
		}
	}
	// Player defense is based on shield
	player.defense = 0;
	// Update player health display
	healthText.setText('Health: ' + player.health);
	armorText.setText('Armor: ' + player.defense);
	scoreText.setText('Score: ' + gameScore);
	// Update shield display
	if (player.shieldActive) {
		var shieldTimeLeft = Math.ceil(player.shieldDuration / 60);
		shieldText.setText('Shield: ' + player.shieldHealth + '/' + player.shieldMaxHealth + ' (' + shieldTimeLeft + 's)');
	} else {
		shieldText.setText('');
	}
	// Update boss health bar
	if (currentBoss && bossHealthBar.alpha > 0) {
		var healthPercent = Math.round(currentBoss.health / currentBoss.maxHealth * 100);
		bossHealthBar.setText('BOSS: ' + currentBoss.health + '/' + currentBoss.maxHealth + ' (' + healthPercent + '%)');
	}
	// Check game over
	if (player.health <= 0) {
		LK.showGameOver();
		return;
	}
	// Wave management
	if (!waveCompleted) {
		if (bossWave) {
			// Boss wave logic
			if (!currentBoss && creeps.length === 0) {
				spawnBoss();
			}
			// Check if boss wave is complete
			if (currentBoss && creeps.length === 0) {
				waveCompleted = true;
				nextWaveTimer = 180; // 3 second break
				currentBoss = null;
				// Hide boss health bar
				tween(bossHealthBar, {
					alpha: 0
				}, {
					duration: 500
				});
			}
		} else {
			// Regular wave logic
			// Spawn creeps
			if (creepsSpawned < creepsInWave || eliteCreepsSpawned < eliteCreepsInWave) {
				spawnTimer++;
				if (spawnTimer >= 60) {
					// Spawn every second
					if (creepsSpawned < creepsInWave) {
						spawnCreep();
						creepsSpawned++;
					} else if (eliteCreepsSpawned < eliteCreepsInWave) {
						spawnEliteCreep();
						eliteCreepsSpawned++;
					}
					spawnTimer = 0;
				}
			}
			// Check if wave is complete
			if (creepsSpawned >= creepsInWave && eliteCreepsSpawned >= eliteCreepsInWave && creeps.length === 0) {
				waveCompleted = true;
				nextWaveTimer = 180; // 3 second break
			}
		}
	} else {
		nextWaveTimer--;
		if (nextWaveTimer <= 0) {
			startNextWave();
		}
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Check if bullet is off screen
		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-creep collisions
		var hitCreep = false;
		for (var j = creeps.length - 1; j >= 0; j--) {
			var creep = creeps[j];
			if (bullet.intersects(creep)) {
				var isDead = creep.takeDamage(bullet.damage);
				if (isDead) {
					// Give points for killing creeps
					var scoreValue;
					if (creep instanceof BossCreep) {
						scoreValue = 1000; // High score for boss
						// Boss always drops multiple pickups
						for (var p = 0; p < 3; p++) {
							dropPickup(creep.x + (Math.random() - 0.5) * 100, creep.y + (Math.random() - 0.5) * 100);
						}
					} else if (creep instanceof EliteCreep) {
						scoreValue = 200;
						// Elite creeps have 50% chance to drop weapon damage upgrade
						if (Math.random() < 0.5) {
							var damagePickup = new Pickup('damage');
							damagePickup.x = creep.x;
							damagePickup.y = creep.y;
							pickups.push(damagePickup);
							game.addChild(damagePickup);
						}
					} else {
						scoreValue = 100;
					}
					gameScore += scoreValue;
					LK.setScore(LK.getScore() + scoreValue);
					if (!(creep instanceof BossCreep)) {
						dropPickup(creep.x, creep.y);
					}
					creep.destroy();
					creeps.splice(j, 1);
				}
				bullet.destroy();
				bullets.splice(i, 1);
				hitCreep = true;
				break;
			}
		}
	}
	// Update creeps
	for (var i = creeps.length - 1; i >= 0; i--) {
		var creep = creeps[i];
		// Check if creep reached player - adjust hit detection based on shield status
		var canHitPlayer = false;
		if (player.shieldActive) {
			// When shield is active, creeps must be much closer to hit
			var dx = creep.x - player.x;
			var dy = creep.y - player.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			canHitPlayer = distance < 30; // Reduced hit distance when shield is active
		} else {
			// Normal hit detection when no shield
			canHitPlayer = creep.hasReachedPlayer || creep.intersects(player);
		}
		if (canHitPlayer) {
			if (!creep.hasReachedPlayer) {
				player.takeDamage(creep.damage);
				creep.hasReachedPlayer = true;
				// Calculate bump direction (away from creep)
				var bumpDx = player.x - creep.x;
				var bumpDy = player.y - creep.y;
				var bumpDistance = Math.sqrt(bumpDx * bumpDx + bumpDy * bumpDy);
				if (bumpDistance > 0) {
					var normalizedBumpX = bumpDx / bumpDistance;
					var normalizedBumpY = bumpDy / bumpDistance;
					var bumpStrength = 30; // How far to bump the player
					// Bump the player away from the creep
					tween(player, {
						x: player.x + normalizedBumpX * bumpStrength,
						y: player.y + normalizedBumpY * bumpStrength
					}, {
						duration: 200,
						easing: tween.easeOut
					});
				}
			}
			// Don't destroy creep - it stays alive after hitting player
		}
	}
	// Pickup processing moved to beginning of update loop
};