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

/**** 
* Classes
****/ 
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('boss', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 500;
	self.maxHealth = 500;
	self.speed = 0.8;
	self.damage = 30;
	self.lastPlayerDistance = 0;
	self.attackCooldown = 0;
	self.attackPhase = 0;
	self.isBoss = true;
	self.update = function () {
		// Check for nearby bullets and evade (bosses have moderate evasion)
		var evadeX = 0;
		var evadeY = 0;
		var shouldEvade = false;
		for (var i = 0; i < bullets.length; i++) {
			var bullet = bullets[i];
			var bulletDx = bullet.x - self.x;
			var bulletDy = bullet.y - self.y;
			var bulletDistance = Math.sqrt(bulletDx * bulletDx + bulletDy * bulletDy);
			// Bosses detect bullets from medium range
			if (bulletDistance < 100) {
				var bulletSpeed = Math.sqrt(bullet.velocityX * bullet.velocityX + bullet.velocityY * bullet.velocityY);
				if (bulletSpeed > 0) {
					// Calculate if bullet is heading towards enemy
					var bulletDirection = Math.atan2(bullet.velocityY, bullet.velocityX);
					var enemyDirection = Math.atan2(bulletDy, bulletDx);
					var angleDiff = Math.abs(bulletDirection - enemyDirection);
					if (angleDiff > Math.PI) angleDiff = 2 * Math.PI - angleDiff;
					// Bosses have narrow detection angle but good reaction
					if (angleDiff < Math.PI / 6) {
						shouldEvade = true;
						// Calculate perpendicular evasion direction
						evadeX += -bulletDy / bulletDistance * (100 - bulletDistance) / 100;
						evadeY += bulletDx / bulletDistance * (100 - bulletDistance) / 100;
					}
				}
			}
		}
		;
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 100) {
			var moveX = dx / distance * self.speed;
			var moveY = dy / distance * self.speed;
			// Apply evasion if needed (bosses have moderate dodge chance)
			if (shouldEvade) {
				// 50% chance to successfully evade
				if (Math.random() < 0.5) {
					moveX += evadeX * 1.5;
					moveY += evadeY * 1.5;
				}
			}
			// Track previous position for direction detection
			var prevX = self.x;
			self.x += moveX;
			self.y += moveY;
			// Flip boss asset based on movement direction
			var deltaX = self.x - prevX;
			if (Math.abs(deltaX) > 0.1) {
				// Only flip if there's significant horizontal movement
				if (deltaX > 0) {
					// Moving right - show normal version
					self.children[0].scaleX = Math.abs(self.children[0].scaleX);
				} else {
					// Moving left - show mirrored (flipped) version
					self.children[0].scaleX = -Math.abs(self.children[0].scaleX);
				}
			}
		}
		// Attack patterns
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		} else {
			self.performAttack();
			self.attackCooldown = 120; // 2 seconds
		}
		// Check collision with player
		var currentPlayerDistance = distance;
		if (self.lastPlayerDistance > 80 && currentPlayerDistance <= 80) {
			player.takeDamage(self.damage);
		}
		self.lastPlayerDistance = currentPlayerDistance;
	};
	self.performAttack = function () {
		switch (self.attackPhase) {
			case 0:
				self.circularAttack();
				break;
			case 1:
				self.chargeAttack();
				break;
			case 2:
				self.areaAttack();
				break;
		}
		self.attackPhase = (self.attackPhase + 1) % 3;
	};
	self.circularAttack = function () {
		for (var i = 0; i < 8; i++) {
			var angle = i * Math.PI / 4;
			var projectile = new EnemyProjectile();
			projectile.x = self.x;
			projectile.y = self.y;
			projectile.velocityX = Math.cos(angle) * 8;
			projectile.velocityY = Math.sin(angle) * 8;
			enemyProjectiles.push(projectile);
			game.addChild(projectile);
		}
	};
	self.chargeAttack = function () {
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			tween(self, {
				x: self.x + dx / distance * 200,
				y: self.y + dy / distance * 200
			}, {
				duration: 500,
				easing: tween.easeOut
			});
		}
	};
	self.areaAttack = function () {
		createExplosion(self.x, self.y, 150);
		LK.getSound('explosion').play();
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 150) {
			player.takeDamage(self.damage);
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.die();
		} else {
			LK.effects.flashObject(self, 0xFFFFFF, 100);
		}
	};
	self.die = function () {
		createExplosion(self.x, self.y, 200);
		LK.getSound('explosion').play();
		LK.setScore(LK.getScore() + 200);
		player.addCombo();
		// Boss defeated - show upgrade screen
		showUpgradeScreen();
		// Remove from enemies array
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.damage = 25;
	self.isCritical = false;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Check collision with enemies
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			if (self.intersects(enemy)) {
				var finalDamage = self.damage;
				if (self.isCritical) {
					finalDamage *= 2;
					createExplosion(self.x, self.y, 50);
				}
				enemy.takeDamage(finalDamage);
				player.addCombo();
				self.destroy();
				// Remove from bullets array
				for (var j = 0; j < bullets.length; j++) {
					if (bullets[j] === self) {
						bullets.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Remove if out of bounds
		if (self.x < 0 || self.x > 2048 || self.y < 0 || self.y > 2732) {
			self.destroy();
			for (var k = 0; k < bullets.length; k++) {
				if (bullets[k] === self) {
					bullets.splice(k, 1);
					break;
				}
			}
		}
	};
	return self;
});
var Character = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'warrior';
	var characterGraphics = self.attachAsset(self.type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set stats based on character type
	switch (self.type) {
		case 'warrior':
			self.health = 120;
			self.maxHealth = 120;
			self.damage = 30;
			self.fireRate = 18;
			self.speed = 7;
			self.weaponType = 'sword';
			break;
		case 'archer':
			self.health = 80;
			self.maxHealth = 80;
			self.damage = 20;
			self.fireRate = 10;
			self.speed = 10;
			self.weaponType = 'bow';
			break;
		case 'mage':
			self.health = 60;
			self.maxHealth = 60;
			self.damage = 35;
			self.fireRate = 25;
			self.speed = 8;
			self.weaponType = 'staff';
			break;
	}
	self.fireCooldown = 0;
	self.comboMultiplier = 1;
	self.comboTimer = 0;
	self.comboCount = 0;
	self.isDead = false;
	self.magazine = 7;
	self.maxMagazine = 7;
	self.reloadTime = 72; // 1.2 seconds at 60fps
	self.isReloading = false;
	self.weaponType = 'basic'; // Track current weapon type
	self.hasShotgun = false;
	self.update = function () {
		// Stop all actions if character is dead
		if (self.isDead) {
			return;
		}
		if (self.fireCooldown > 0) {
			self.fireCooldown--;
		}
		if (self.comboTimer > 0) {
			self.comboTimer--;
		} else {
			self.comboMultiplier = 1;
			self.comboCount = 0;
		}
		// Handle reloading
		if (self.isReloading) {
			self.reloadTime--;
			if (self.reloadTime <= 0) {
				if (self.weaponType === 'shotgun') {
					self.magazine = 5;
					self.maxMagazine = 5;
					self.reloadTime = 90; // Reset reload time for shotgun
				} else {
					self.magazine = self.maxMagazine;
					self.reloadTime = 72; // Reset reload time
				}
				self.isReloading = false;
			}
		}
		// Auto-fire at nearest enemy with weapon-specific bullets
		if (self.fireCooldown <= 0 && enemies.length > 0 && !self.isReloading) {
			var nearestEnemy = self.findNearestEnemy();
			if (nearestEnemy && self.magazine > 0) {
				if (self.weaponType === 'shotgun') {
					// Fire shotgun pellets in cone pattern
					var dx = nearestEnemy.x - self.x;
					var dy = nearestEnemy.y - self.y;
					var distance = Math.sqrt(dx * dx + dy * dy);
					var baseAngle = Math.atan2(dy, dx);
					// Fire 5 pellets in cone
					for (var p = 0; p < 5; p++) {
						var bullet = new Bullet();
						bullet.x = self.x;
						bullet.y = self.y;
						// Spread pellets in 30-degree cone
						var angleOffset = (p - 2) * (Math.PI / 12); // 15 degrees each side
						var pelletAngle = baseAngle + angleOffset;
						bullet.velocityX = Math.cos(pelletAngle) * 15;
						bullet.velocityY = Math.sin(pelletAngle) * 15;
						bullet.damage = Math.floor(50 * 0.75); // 75% of basic enemy health (50)
						bullets.push(bullet);
						game.addChild(bullet);
					}
				} else {
					// Create simple bullet
					var bullet = new Bullet();
					bullet.x = self.x;
					bullet.y = self.y;
					var dx = nearestEnemy.x - self.x;
					var dy = nearestEnemy.y - self.y;
					var distance = Math.sqrt(dx * dx + dy * dy);
					bullet.velocityX = dx / distance * 15;
					bullet.velocityY = dy / distance * 15;
					bullet.damage = 25; // Basic damage
					bullets.push(bullet);
					game.addChild(bullet);
				}
				LK.getSound('shoot').play();
				self.fireCooldown = self.fireRate;
				self.magazine--;
				// Start reloading if magazine is empty
				if (self.magazine <= 0) {
					self.isReloading = true;
					if (self.weaponType === 'shotgun') {
						self.reloadTime = 90; // 1.5 seconds at 60fps
					} else {
						self.reloadTime = 72; // 1.2 seconds at 60fps
					}
				}
			}
		}
		// Keep player within arena bounds
		var arenaLeft = arena.x - arena.width / 2;
		var arenaRight = arena.x + arena.width / 2;
		var arenaTop = arena.y - arena.height / 2;
		var arenaBottom = arena.y + arena.height / 2;
		if (self.x < arenaLeft + 40) self.x = arenaLeft + 40;
		if (self.x > arenaRight - 40) self.x = arenaRight - 40;
		if (self.y < arenaTop + 40) self.y = arenaTop + 40;
		if (self.y > arenaBottom - 40) self.y = arenaBottom - 40;
	};
	self.findNearestEnemy = function () {
		var nearest = null;
		var nearestDistance = Infinity;
		var maxRange = self.weaponType === 'shotgun' ? 550 : Infinity; // Shotgun has limited range
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			var dx = enemy.x - self.x;
			var dy = enemy.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < nearestDistance && distance <= maxRange) {
				nearestDistance = distance;
				nearest = enemy;
			}
		}
		return nearest;
	};
	self.fireAt = function (target) {
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		var dx = target.x - self.x;
		var dy = target.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		bullet.velocityX = dx / distance * 15;
		bullet.velocityY = dy / distance * 15;
		bullet.damage = self.damage * self.comboMultiplier;
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		self.comboMultiplier = 1;
		self.comboCount = 0;
		self.comboTimer = 0;
		if (self.health <= 0) {
			self.health = 0;
			self.die();
		}
		LK.effects.flashObject(self, 0xFF0000, 200);
	};
	self.addCombo = function () {
		self.comboCount++;
		self.comboTimer = 180; // 3 seconds
		if (self.comboCount >= 5) {
			self.comboMultiplier = Math.min(self.comboMultiplier + 0.1, 3);
		}
	};
	self.die = function () {
		self.isDead = true;
		self.alpha = 0.5; // Make character semi-transparent
		createExplosion(self.x, self.y, 120);
		LK.getSound('explosion').play();
		LK.showGameOver();
	};
	self.switchToShotgun = function () {
		self.weaponType = 'shotgun';
		self.hasShotgun = true;
		self.magazine = 5;
		self.maxMagazine = 5;
		self.reloadTime = 90; // 1.5 seconds at 60fps
		self.isReloading = false;
	};
	return self;
});
var Player = Character.expand(function (type) {
	var self = Character.call(this, type);
	// Add critical hit chance
	self.criticalChance = 0.1;
	// Override fireAt to add critical hits
	var originalFireAt = self.fireAt;
	self.fireAt = function (target) {
		originalFireAt.call(self, target);
		// Add critical hit chance
		var lastBullet = bullets[bullets.length - 1];
		if (lastBullet && Math.random() < self.criticalChance) {
			lastBullet.isCritical = true;
			lastBullet.children[0].tint = 0xFF4444;
		}
	};
	return self;
});
var EliteEnemy = Container.expand(function () {
	var self = Container.call(this);
	var eliteGraphics = self.attachAsset('eliteEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 150;
	self.maxHealth = 150;
	self.speed = 1.5;
	self.damage = 20;
	self.lastPlayerDistance = 0;
	self.specialCooldown = 0;
	self.isElite = true;
	self.update = function () {
		// Check for nearby bullets and evade (elite enemies are better at dodging)
		var evadeX = 0;
		var evadeY = 0;
		var shouldEvade = false;
		for (var i = 0; i < bullets.length; i++) {
			var bullet = bullets[i];
			var bulletDx = bullet.x - self.x;
			var bulletDy = bullet.y - self.y;
			var bulletDistance = Math.sqrt(bulletDx * bulletDx + bulletDy * bulletDy);
			// Elite enemies detect bullets from further away
			if (bulletDistance < 150) {
				var bulletSpeed = Math.sqrt(bullet.velocityX * bullet.velocityX + bullet.velocityY * bullet.velocityY);
				if (bulletSpeed > 0) {
					// Calculate if bullet is heading towards enemy
					var bulletDirection = Math.atan2(bullet.velocityY, bullet.velocityX);
					var enemyDirection = Math.atan2(bulletDy, bulletDx);
					var angleDiff = Math.abs(bulletDirection - enemyDirection);
					if (angleDiff > Math.PI) angleDiff = 2 * Math.PI - angleDiff;
					// Elite enemies have wider detection angle
					if (angleDiff < Math.PI / 3) {
						shouldEvade = true;
						// Calculate perpendicular evasion direction
						evadeX += -bulletDy / bulletDistance * (150 - bulletDistance) / 150;
						evadeY += bulletDx / bulletDistance * (150 - bulletDistance) / 150;
					}
				}
			}
		}
		// Move towards player
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			var moveX = dx / distance * self.speed;
			var moveY = dy / distance * self.speed;
			// Apply evasion if needed (elite enemies are better at dodging)
			if (shouldEvade) {
				// 85% chance to successfully evade
				if (Math.random() < 0.85) {
					moveX += evadeX * 2.5;
					moveY += evadeY * 2.5;
				}
			}
			// Track previous position for direction detection
			var prevX = self.x;
			self.x += moveX;
			self.y += moveY;
			// Flip elite enemy asset based on movement direction
			var deltaX = self.x - prevX;
			if (Math.abs(deltaX) > 0.1) {
				// Only flip if there's significant horizontal movement
				if (deltaX > 0) {
					// Moving right - show normal version
					self.children[0].scaleX = Math.abs(self.children[0].scaleX);
				} else {
					// Moving left - show mirrored (flipped) version
					self.children[0].scaleX = -Math.abs(self.children[0].scaleX);
				}
			}
		}
		// Special ability - dash attack
		if (self.specialCooldown > 0) {
			self.specialCooldown--;
		} else if (distance < 200 && distance > 80) {
			self.specialCooldown = 300; // 5 seconds
			self.dashAttack();
		}
		// Check collision with player
		var currentPlayerDistance = distance;
		if (self.lastPlayerDistance > 50 && currentPlayerDistance <= 50) {
			player.takeDamage(self.damage);
		}
		self.lastPlayerDistance = currentPlayerDistance;
	};
	self.dashAttack = function () {
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			tween(self, {
				x: self.x + dx / distance * 150,
				y: self.y + dy / distance * 150
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.die();
		} else {
			LK.effects.flashObject(self, 0xFFFFFF, 100);
		}
	};
	self.die = function () {
		createExplosion(self.x, self.y);
		LK.getSound('explosion').play();
		LK.setScore(LK.getScore() + 50);
		player.addCombo();
		// Higher chance for power-up
		if (Math.random() < 0.6) {
			var powerup = new PowerUp();
			powerup.x = self.x;
			powerup.y = self.y;
			powerups.push(powerup);
			game.addChild(powerup);
		}
		// Remove from enemies array
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 50;
	self.speed = 1;
	self.damage = 10;
	self.lastPlayerDistance = 0;
	self.update = function () {
		// Check for nearby bullets and evade
		var evadeX = 0;
		var evadeY = 0;
		var shouldEvade = false;
		for (var i = 0; i < bullets.length; i++) {
			var bullet = bullets[i];
			var bulletDx = bullet.x - self.x;
			var bulletDy = bullet.y - self.y;
			var bulletDistance = Math.sqrt(bulletDx * bulletDx + bulletDy * bulletDy);
			// If bullet is close (within 120 pixels) and moving towards enemy
			if (bulletDistance < 120) {
				var bulletSpeed = Math.sqrt(bullet.velocityX * bullet.velocityX + bullet.velocityY * bullet.velocityY);
				if (bulletSpeed > 0) {
					// Calculate if bullet is heading towards enemy
					var bulletDirection = Math.atan2(bullet.velocityY, bullet.velocityX);
					var enemyDirection = Math.atan2(bulletDy, bulletDx);
					var angleDiff = Math.abs(bulletDirection - enemyDirection);
					if (angleDiff > Math.PI) angleDiff = 2 * Math.PI - angleDiff;
					// If bullet is heading towards enemy (within 45 degrees)
					if (angleDiff < Math.PI / 4) {
						shouldEvade = true;
						// Calculate perpendicular evasion direction
						evadeX += -bulletDy / bulletDistance * (120 - bulletDistance) / 120;
						evadeY += bulletDx / bulletDistance * (120 - bulletDistance) / 120;
					}
				}
			}
		}
		// Move towards player
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			var moveX = dx / distance * self.speed;
			var moveY = dy / distance * self.speed;
			// Apply evasion if needed
			if (shouldEvade) {
				// 70% chance to successfully evade
				if (Math.random() < 0.7) {
					moveX += evadeX * 2;
					moveY += evadeY * 2;
				}
			}
			// Track previous position for direction detection
			var prevX = self.x;
			self.x += moveX;
			self.y += moveY;
			// Flip enemy asset based on movement direction
			var deltaX = self.x - prevX;
			if (Math.abs(deltaX) > 0.1) {
				// Only flip if there's significant horizontal movement
				if (deltaX > 0) {
					// Moving right - show normal version
					self.children[0].scaleX = Math.abs(self.children[0].scaleX);
				} else {
					// Moving left - show mirrored (flipped) version
					self.children[0].scaleX = -Math.abs(self.children[0].scaleX);
				}
			}
		}
		// Check collision with player
		var currentPlayerDistance = distance;
		if (self.lastPlayerDistance > 50 && currentPlayerDistance <= 50) {
			player.takeDamage(self.damage);
		}
		self.lastPlayerDistance = currentPlayerDistance;
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.die();
		} else {
			LK.effects.flashObject(self, 0xFFFFFF, 100);
		}
	};
	self.die = function () {
		createExplosion(self.x, self.y);
		LK.getSound('enemyHit').play();
		LK.setScore(LK.getScore() + 10);
		player.addCombo();
		// Chance to drop power-up
		if (Math.random() < 0.3) {
			var powerup = new PowerUp();
			powerup.x = self.x;
			powerup.y = self.y;
			powerups.push(powerup);
			game.addChild(powerup);
		}
		// Remove from enemies array
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
	};
	return self;
});
var EnemyProjectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	projectileGraphics.tint = 0xFF0000;
	self.velocityX = 0;
	self.velocityY = 0;
	self.damage = 15;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Check collision with player
		if (self.intersects(player)) {
			player.takeDamage(self.damage);
			self.destroy();
			for (var i = 0; i < enemyProjectiles.length; i++) {
				if (enemyProjectiles[i] === self) {
					enemyProjectiles.splice(i, 1);
					break;
				}
			}
			return;
		}
		// Remove if out of bounds
		if (self.x < 0 || self.x > 2048 || self.y < 0 || self.y > 2732) {
			self.destroy();
			for (var j = 0; j < enemyProjectiles.length; j++) {
				if (enemyProjectiles[j] === self) {
					enemyProjectiles.splice(j, 1);
					break;
				}
			}
		}
	};
	return self;
});
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifetime = 30;
	explosionGraphics.alpha = 0.8;
	self.update = function () {
		self.lifetime--;
		explosionGraphics.alpha = self.lifetime / 30;
		explosionGraphics.scaleX = explosionGraphics.scaleY = (30 - self.lifetime) / 30 * 2;
		if (self.lifetime <= 0) {
			self.destroy();
		}
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = Math.floor(Math.random() * 4); // 0: health, 1: damage, 2: fire rate, 3: speed
	self.lifetime = 600; // 10 seconds at 60fps
	// Keep power-ups in classic color (no tinting)
	self.update = function () {
		self.lifetime--;
		// Fade out near end of lifetime
		if (self.lifetime < 120) {
			powerupGraphics.alpha = self.lifetime / 120;
		}
		// Remove if expired
		if (self.lifetime <= 0) {
			self.destroy();
			for (var i = 0; i < powerups.length; i++) {
				if (powerups[i] === self) {
					powerups.splice(i, 1);
					break;
				}
			}
			return;
		}
		// Check collision with player
		if (self.intersects(player)) {
			self.applyEffect();
			LK.getSound('powerupCollect').play();
			self.destroy();
			for (var j = 0; j < powerups.length; j++) {
				if (powerups[j] === self) {
					powerups.splice(j, 1);
					break;
				}
			}
		}
	};
	self.applyEffect = function () {
		switch (self.type) {
			case 0:
				// Health
				player.health = Math.min(player.health + 30, player.maxHealth);
				player.health = Math.min(player.health + 10, player.maxHealth);
				break;
			case 1:
				// Damage
				player.damage += 5;
				break;
			case 2:
				// Fire rate
				player.fireRate = Math.max(player.fireRate - 2, 5);
				break;
			case 3:
				// Speed
				player.speed = Math.min(player.speed + 1, 15);
				break;
		}
	};
	return self;
});
var ShotgunPowerup = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('shotgunPowerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifetime = 900; // 15 seconds at 60fps
	self.bobTimer = 0;
	self.initialY = 0;
	self.update = function () {
		self.lifetime--;
		self.bobTimer++;
		// Bobbing animation
		if (self.initialY === 0) self.initialY = self.y;
		self.y = self.initialY + Math.sin(self.bobTimer * 0.1) * 10;
		// Fade out near end of lifetime
		if (self.lifetime < 180) {
			powerupGraphics.alpha = self.lifetime / 180;
		}
		// Remove if expired
		if (self.lifetime <= 0) {
			self.destroy();
			for (var i = 0; i < shotgunPowerups.length; i++) {
				if (shotgunPowerups[i] === self) {
					shotgunPowerups.splice(i, 1);
					break;
				}
			}
			return;
		}
		// Check collision with player
		if (self.intersects(player)) {
			player.switchToShotgun();
			LK.getSound('powerupCollect').play();
			self.destroy();
			for (var j = 0; j < shotgunPowerups.length; j++) {
				if (shotgunPowerups[j] === self) {
					shotgunPowerups.splice(j, 1);
					break;
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2C2C2C
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var enemies = [];
var bullets = [];
var powerups = [];
var enemyProjectiles = [];
var explosions = [];
var shotgunPowerups = [];
var arena;
var waveNumber = 1;
var enemySpawnTimer = 0;
var enemySpawnRate = 120; // 2 seconds at 60fps
var gameTime = 0;
var selectedCharacter = storage.selectedCharacter || 'warrior';
var upgradeScreenActive = false;
var currentMusicTrack = 'battleMusic';
var musicIntensity = 0;
// Create arena
arena = game.addChild(LK.getAsset('arena', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
}));
// Create player
player = game.addChild(new Player(selectedCharacter));
player.x = 1024;
player.y = 1600;
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreText);
scoreText.x = -300;
scoreText.y = 50;
var healthText = new Text2('Health: 100', {
	size: 60,
	fill: 0xFFFFFF
});
healthText.anchor.set(0, 0);
LK.gui.topRight.addChild(healthText);
healthText.x = -300;
healthText.y = 120;
var waveText = new Text2('Wave: 1', {
	size: 60,
	fill: 0xFFFFFF
});
waveText.anchor.set(0, 0);
LK.gui.topRight.addChild(waveText);
waveText.x = -300;
waveText.y = 190;
var comboText = new Text2('Combo: x1', {
	size: 50,
	fill: 0xFFEB3B
});
comboText.anchor.set(0, 0);
LK.gui.topRight.addChild(comboText);
comboText.x = -300;
comboText.y = 260;
var magazineText = new Text2('7/7', {
	size: 80,
	fill: 0xFFFFFF,
	font: "'GillSans-Bold',Impact,'Arial Black',Tahoma"
});
magazineText.anchor.set(0.5, 1);
magazineText.x = player.x;
magazineText.y = player.y - 120;
game.addChild(magazineText);
// Tutorial text
var tutorialText = new Text2('Move by dragging', {
	size: 80,
	fill: 0xFFFFFF
});
tutorialText.anchor.set(0.5, 0.5);
tutorialText.x = 1024;
tutorialText.y = 1200;
game.addChild(tutorialText);
// Add rainbow cycling to tutorial text
var tutorialColors = [0xFF0000, 0xFF7F00, 0xFFFF00, 0x00FF00, 0x0000FF, 0x4B0082, 0x9400D3];
var tutorialColorIndex = 0;
function cycleTutorialRainbow() {
	var nextColor = tutorialColors[(tutorialColorIndex + 1) % tutorialColors.length];
	tween(tutorialText, {
		tint: nextColor
	}, {
		duration: 300,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tutorialColorIndex = (tutorialColorIndex + 1) % tutorialColors.length;
			cycleTutorialRainbow();
		}
	});
}
cycleTutorialRainbow();
// Fade out tutorial text after 2 seconds
LK.setTimeout(function () {
	tween(tutorialText, {
		alpha: 0
	}, {
		duration: 1000,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			tutorialText.destroy();
			LK.getSound('characterGreeting').play();
		}
	});
}, 2000);
// Touch controls
var isDragging = false;
var dragOffsetX = 0;
var dragOffsetY = 0;
var gameStarted = false;
// Player speed limiting
var maxPlayerSpeed = 10;
var targetX = 0;
var targetY = 0;
game.down = function (x, y, obj) {
	isDragging = true;
	// Calculate offset from touch point to player center
	dragOffsetX = player.x - x;
	dragOffsetY = player.y - y;
};
game.move = function (x, y, obj) {
	if (isDragging) {
		// Set target position instead of direct movement
		targetX = x + dragOffsetX;
		targetY = y + dragOffsetY;
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
// Utility functions
function createExplosion(x, y, size) {
	var explosion = new Explosion();
	explosion.x = x;
	explosion.y = y;
	if (size) {
		explosion.children[0].scaleX = explosion.children[0].scaleY = size / 100;
	}
	explosions.push(explosion);
	game.addChild(explosion);
}
function showUpgradeScreen() {
	upgradeScreenActive = true;
	var upgradePanel = LK.getAsset('skillPanel', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1366
	});
	game.addChild(upgradePanel);
	var upgradeTitle = new Text2('Choose an Upgrade', {
		size: 60,
		fill: 0xFFFFFF
	});
	upgradeTitle.anchor.set(0.5, 0.5);
	upgradeTitle.x = 1024;
	upgradeTitle.y = 1200;
	game.addChild(upgradeTitle);
	var upgrades = [{
		name: 'Attack Speed',
		desc: 'Faster firing rate'
	}, {
		name: 'Health Boost',
		desc: 'Increase max health'
	}, {
		name: 'Critical Hit',
		desc: 'Higher crit chance'
	}];
	for (var i = 0; i < 3; i++) {
		var button = LK.getAsset('skillButton', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 700 + i * 200,
			y: 1366
		});
		game.addChild(button);
		var buttonText = new Text2(upgrades[i].name, {
			size: 30,
			fill: 0xFFFFFF
		});
		buttonText.anchor.set(0.5, 0.5);
		buttonText.x = 700 + i * 200;
		buttonText.y = 1366;
		game.addChild(buttonText);
		button.down = function (x, y, obj) {
			applyUpgrade(i);
			upgradePanel.destroy();
			upgradeTitle.destroy();
			for (var j = 0; j < 3; j++) {
				game.children[game.children.length - 1].destroy();
				game.children[game.children.length - 1].destroy();
			}
			upgradeScreenActive = false;
		};
	}
}
function applyUpgrade(type) {
	switch (type) {
		case 0:
			// Attack Speed
			player.fireRate = Math.max(player.fireRate - 3, 5);
			break;
		case 1:
			// Health Boost
			player.maxHealth += 30;
			player.health = Math.min(player.health + 30, player.maxHealth);
			break;
		case 2:
			// Critical Hit
			player.criticalChance = Math.min(player.criticalChance + 0.1, 0.5);
			break;
	}
}
// Spawn enemy function
function spawnEnemy() {
	var enemy;
	// Boss every 5 waves
	if (waveNumber % 5 === 0 && enemies.length === 0) {
		enemy = new Boss();
		LK.getSound('bossSpawn').play();
		LK.playMusic('bossMusic', {
			fade: {
				start: 0,
				end: 1,
				duration: 1000
			}
		});
	} else if (Math.random() < 0.2) {
		// 20% chance for elite enemy
		enemy = new EliteEnemy();
	} else {
		enemy = new Enemy();
	}
	// Spawn from arena edges
	var side = Math.floor(Math.random() * 4);
	var arenaLeft = arena.x - arena.width / 2;
	var arenaRight = arena.x + arena.width / 2;
	var arenaTop = arena.y - arena.height / 2;
	var arenaBottom = arena.y + arena.height / 2;
	switch (side) {
		case 0:
			// Top
			enemy.x = arenaLeft + Math.random() * arena.width;
			enemy.y = arenaTop;
			break;
		case 1:
			// Right
			enemy.x = arenaRight;
			enemy.y = arenaTop + Math.random() * arena.height;
			break;
		case 2:
			// Bottom
			enemy.x = arenaLeft + Math.random() * arena.width;
			enemy.y = arenaBottom;
			break;
		case 3:
			// Left
			enemy.x = arenaLeft;
			enemy.y = arenaTop + Math.random() * arena.height;
			break;
	}
	// Scale enemy stats with wave number
	if (!enemy.isBoss) {
		enemy.health += Math.floor(waveNumber * 5);
		enemy.speed += Math.floor(waveNumber * 0.2);
		enemy.damage += Math.floor(waveNumber * 2);
	}
	enemies.push(enemy);
	game.addChild(enemy);
}
// Main game loop
game.update = function () {
	// Start game logic after 3 seconds (tutorial display time)
	if (gameTime < 180) {
		// 3 seconds at 60fps
		gameTime++;
		return;
	}
	if (!gameStarted) {
		gameStarted = true;
		LK.playMusic('battleMusic');
	}
	if (upgradeScreenActive) {
		return;
	}
	// Apply speed-limited movement to player
	if (isDragging) {
		var dx = targetX - player.x;
		var dy = targetY - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			var moveX = dx / distance * maxPlayerSpeed;
			var moveY = dy / distance * maxPlayerSpeed;
			// Track previous position for direction detection
			var prevX = player.x;
			// Don't overshoot the target
			if (distance < maxPlayerSpeed) {
				player.x = targetX;
				player.y = targetY;
			} else {
				player.x += moveX;
				player.y += moveY;
			}
			// Flip warrior asset based on movement direction
			var deltaX = player.x - prevX;
			if (Math.abs(deltaX) > 0.1) {
				// Only flip if there's significant horizontal movement
				if (deltaX > 0) {
					// Moving right - show normal version
					player.children[0].scaleX = Math.abs(player.children[0].scaleX);
				} else {
					// Moving left - show mirrored (flipped) version
					player.children[0].scaleX = -Math.abs(player.children[0].scaleX);
				}
			}
		}
	}
	gameTime++;
	// Update wave number based on time
	var newWave = Math.floor(gameTime / 1800) + 1; // New wave every 30 seconds
	if (newWave > waveNumber) {
		waveNumber = newWave;
		enemySpawnRate = Math.max(enemySpawnRate - 10, 30); // Increase spawn rate
		// Dynamic music intensity
		musicIntensity = Math.min(waveNumber / 10, 1);
		if (waveNumber % 5 !== 0) {
			LK.playMusic('battleMusic', {
				fade: {
					start: 0.5,
					end: 0.5 + musicIntensity * 0.5,
					duration: 500
				}
			});
		}
	}
	// Spawn enemies
	enemySpawnTimer++;
	if (enemySpawnTimer >= enemySpawnRate) {
		var enemiesToSpawn = Math.min(waveNumber, 8);
		for (var i = 0; i < enemiesToSpawn; i++) {
			spawnEnemy();
		}
		enemySpawnTimer = 0;
	}
	// Spawn shotgun powerup occasionally (every 20 seconds if none exist)
	if (gameTime % 1200 === 0 && shotgunPowerups.length === 0 && !player.hasShotgun) {
		var shotgunPowerup = new ShotgunPowerup();
		// Spawn in random location within arena
		var arenaLeft = arena.x - arena.width / 2;
		var arenaRight = arena.x + arena.width / 2;
		var arenaTop = arena.y - arena.height / 2;
		var arenaBottom = arena.y + arena.height / 2;
		shotgunPowerup.x = arenaLeft + Math.random() * (arenaRight - arenaLeft);
		shotgunPowerup.y = arenaTop + Math.random() * (arenaBottom - arenaTop);
		shotgunPowerups.push(shotgunPowerup);
		game.addChild(shotgunPowerup);
	}
	// Update explosions
	for (var e = explosions.length - 1; e >= 0; e--) {
		var explosion = explosions[e];
		if (explosion.lifetime <= 0) {
			explosions.splice(e, 1);
		}
	}
	// Update UI
	scoreText.setText('Score: ' + LK.getScore());
	healthText.setText('Health: ' + player.health);
	waveText.setText('Wave: ' + waveNumber);
	comboText.setText('Combo: x' + player.comboMultiplier.toFixed(1));
	// Update magazine UI
	if (player.isReloading) {
		magazineText.setText('RELOADING...');
		magazineText.tint = 0xFF4444;
	} else {
		magazineText.setText(player.magazine + '/' + player.maxMagazine);
		if (player.weaponType === 'shotgun') {
			// Shotgun has orange/yellow color scheme
			if (player.magazine <= 1) {
				magazineText.tint = 0xFF4444;
			} else if (player.magazine <= 2) {
				magazineText.tint = 0xFFAA00;
			} else {
				magazineText.tint = 0xFFA500; // Orange for shotgun
			}
		} else {
			// Default weapon color scheme
			if (player.magazine <= 2) {
				magazineText.tint = 0xFF4444;
			} else if (player.magazine <= 4) {
				magazineText.tint = 0xFFAA00;
			} else {
				magazineText.tint = 0xFFFFFF;
			}
		}
	}
	magazineText.x = player.x;
	magazineText.y = player.y - 120;
	// Update combo text color
	if (player.comboMultiplier > 2) {
		comboText.tint = 0xFF4444;
	} else if (player.comboMultiplier > 1.5) {
		comboText.tint = 0xFFAA00;
	} else {
		comboText.tint = 0xFFEB3B;
	}
};