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

/**** 
* Classes
****/ 
var BlueEnemy = Container.expand(function (roomLevel) {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('blueEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set blue enemy health to 5 HP
	self.health = 5;
	self.speed = Math.min(1.5 + roomLevel * 0.2, 3.5);
	self.shootTimer = 0;
	self.shootCooldown = Math.max(90 - roomLevel * 3, 50);
	self.active = true;
	self.lastPlayerX = 0;
	self.lastPlayerY = 0;
	self.stunned = false;
	self.stunTimer = 0;
	self.isBlueEnemy = true;
	self.update = function () {
		if (!self.active || !player || isLevelingUp) return;
		// Handle stunning
		if (self.stunned) {
			self.stunTimer--;
			if (self.stunTimer <= 0) {
				self.stunned = false;
			}
			return; // Don't move or shoot while stunned
		}
		// Track last position for intersection detection
		self.lastPlayerX = player.x;
		self.lastPlayerY = player.y;
		// Move aggressively towards player for close range shotgun attack
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var optimalDistance = 120; // Very close for shotgun effectiveness
		var minDistance = 80; // Get very close
		// Apply slowdown effect if active
		var currentSpeed = self.speed;
		if (slowdownActive) {
			currentSpeed = self.speed * slowdownEffect;
		}
		if (distance > optimalDistance) {
			// Move closer aggressively
			self.x += dx / distance * currentSpeed;
			self.y += dy / distance * currentSpeed;
		} else if (distance < minDistance) {
			// Too close - back away slightly
			self.x -= dx / distance * currentSpeed * 0.5;
			self.y -= dx / distance * currentSpeed * 0.5;
		}
		// Shooting logic - shoots when close to player
		self.shootTimer++;
		if (self.shootTimer >= self.shootCooldown && distance < 200) {
			self.shoot();
			self.shootTimer = 0;
		}
	};
	self.shoot = function () {
		// Shotgun spread attack - fires 3 bullets in a spread
		var baseAngle = Math.atan2(player.y - self.y, player.x - self.x);
		for (var i = -1; i <= 1; i++) {
			var bullet = new Bullet(false);
			bullet.direction = baseAngle + i * 0.4; // Wide spread
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.startX = self.x;
			bullet.startY = self.y;
			bullet.speed = 12;
			bullet.damage = 3; // Increased damage per pellet for stronger shotgun
			enemyBullets.push(bullet);
			game.addChild(bullet);
		}
	};
	self.stun = function (duration) {
		self.stunned = true;
		self.stunTimer = duration;
		// Visual feedback for stunned enemy
		LK.effects.flashObject(self, 0xfff700, duration * 16.67);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		if (self.health <= 0) {
			self.active = false;
			LK.setScore(LK.getScore() + 15); // Higher score for blue enemies
			gainXP(75); // More XP for blue enemies
			gainCash(1); // Gain $1 per enemy killed
			LK.getSound('enemyHit').play();
			// Reduce slowdown cooldown by 5 seconds (300 ticks)
			if (slowdownCooldown > 0) {
				slowdownCooldown = Math.max(0, slowdownCooldown - 300);
			}
			// 100% chance to drop sniper weapon
			var sniperPickup = new Pickup('gun', self.x, self.y);
			sniperPickup.weapon = 'sniper'; // Force it to be sniper
			pickups.push(sniperPickup);
			game.addChild(sniperPickup);
			// 25% chance to drop weapon pickup (higher than normal)
			if (Math.random() < 0.25) {
				spawnPickup(self.x, self.y);
			}
			// 15% chance to drop shotgun ammo
			if (Math.random() < 0.15) {
				var ammoPickup = new ShotgunAmmo(self.x, self.y);
				shotgunAmmoPickups.push(ammoPickup);
				game.addChild(ammoPickup);
			}
		}
	};
	return self;
});
var Boss = Container.expand(function (roomLevel) {
	var self = Container.call(this);
	// Create boss graphics - big and purple
	var bossGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3,
		scaleY: 3,
		tint: 0x8e44ad // Purple color
	});
	// Boss stats scale with room level
	self.maxHealth = 50 + Math.floor((roomLevel - 10) / 10) * 50;
	self.health = self.maxHealth;
	self.speed = Math.min(0.8 + roomLevel * 0.1, 2);
	self.shootTimer = 0;
	self.shootCooldown = Math.max(90 - roomLevel * 2, 45);
	self.active = true;
	self.isBoss = true;
	self.update = function () {
		if (!self.active || !player || isLevelingUp) return;
		// Move towards player but maintain distance
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var optimalDistance = 300;
		var minDistance = 200;
		// Apply slowdown effect if active
		var currentSpeed = self.speed;
		if (slowdownActive) {
			currentSpeed = self.speed * slowdownEffect;
		}
		if (distance < minDistance) {
			self.x -= dx / distance * currentSpeed;
			self.y -= dy / distance * currentSpeed;
		} else if (distance > optimalDistance + 150) {
			self.x += dx / distance * currentSpeed;
			self.y += dy / distance * currentSpeed;
		}
		// Shooting logic - bosses shoot more frequently
		self.shootTimer++;
		if (self.shootTimer >= self.shootCooldown && distance < 600) {
			self.shoot();
			self.shootTimer = 0;
		}
	};
	self.shoot = function () {
		// Bosses shoot 3 bullets in a spread
		var baseAngle = Math.atan2(player.y - self.y, player.x - self.x);
		for (var i = -1; i <= 1; i++) {
			var bullet = new Bullet(false);
			bullet.direction = baseAngle + i * 0.3;
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.startX = self.x;
			bullet.startY = self.y;
			bullet.speed = 10;
			enemyBullets.push(bullet);
			game.addChild(bullet);
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		updateBossHealthBar();
		if (self.health <= 0) {
			self.active = false;
			LK.setScore(LK.getScore() + 100);
			gainXP(200);
			gainCash(1); // Gain $1 per enemy killed
			LK.getSound('enemyHit').play();
			// Hide boss health bar
			if (bossHealthBarBg) {
				bossHealthBarBg.alpha = 0;
				bossHealthBar.alpha = 0;
			}
		}
	};
	return self;
});
var Bullet = Container.expand(function (isPlayer, gunType) {
	var self = Container.call(this);
	self.isPlayer = isPlayer || false;
	self.gunType = gunType || 'pistol';
	var bulletGraphics = self.attachAsset(self.isPlayer ? 'bullet' : 'enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Different bullet properties based on gun type
	if (self.isPlayer) {
		switch (self.gunType) {
			case 'pistol':
				self.speed = 12;
				self.damage = 5 + damageBonus;
				self.maxRange = 800 * rangeBonus; // Large range
				break;
			case 'rifle':
				self.speed = 18;
				self.damage = 2 + damageBonus;
				self.maxRange = 1000 * rangeBonus; // Large range
				break;
			case 'shotgun':
				self.speed = 10;
				self.damage = 15 + damageBonus; // Increased from 10 to 15
				self.maxRange = 300; // Short range
				break;
			case 'sniper':
				self.speed = 25;
				self.damage = 20 + damageBonus;
				self.maxRange = 1200 * rangeBonus; // Very long range
				self.pierceCount = 0; // Track how many enemies pierced
				self.maxPierce = 3 + piercingBonus; // Can pierce through 3 + bonus enemies
				break;
			case 'rpg':
				self.speed = 8;
				self.damage = 40; // High damage
				self.maxRange = 600;
				self.isExplosive = true;
				break;
		}
	} else {
		self.speed = 8;
		self.damage = 1;
		self.maxRange = 400;
	}
	self.direction = 0;
	self.active = true;
	self.startX = 0;
	self.startY = 0;
	self.distanceTraveled = 0;
	self.update = function () {
		if (!self.active) return;
		self.x += Math.cos(self.direction) * self.speed;
		self.y += Math.sin(self.direction) * self.speed;
		// Track distance traveled
		var dx = self.x - self.startX;
		var dy = self.y - self.startY;
		self.distanceTraveled = Math.sqrt(dx * dx + dy * dy);
		// Check range limit
		if (self.maxRange && self.distanceTraveled > self.maxRange) {
			self.active = false;
		}
		// Check bounds
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.active = false;
		}
	};
	return self;
});
var Enemy = Container.expand(function (roomLevel) {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set enemy health to 10 HP
	self.health = 10;
	self.speed = Math.min(1 + roomLevel * 0.2, 3);
	self.shootTimer = 0;
	self.shootCooldown = Math.max(120 - roomLevel * 5, 60);
	self.active = true;
	self.lastPlayerX = 0;
	self.lastPlayerY = 0;
	self.stunned = false;
	self.stunTimer = 0;
	self.update = function () {
		if (!self.active || !player || isLevelingUp) return;
		// Handle stunning
		if (self.stunned) {
			self.stunTimer--;
			if (self.stunTimer <= 0) {
				self.stunned = false;
			}
			return; // Don't move or shoot while stunned
		}
		// Track last position for intersection detection
		self.lastPlayerX = player.x;
		self.lastPlayerY = player.y;
		// Move to maintain optimal shooting distance
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var optimalDistance = 250; // Preferred shooting distance
		var minDistance = 150; // Minimum distance to maintain
		// Apply slowdown effect if active
		var currentSpeed = self.speed;
		if (slowdownActive) {
			currentSpeed = self.speed * slowdownEffect;
		}
		if (distance < minDistance) {
			// Too close - back away from player
			self.x -= dx / distance * currentSpeed;
			self.y -= dy / distance * currentSpeed;
		} else if (distance > optimalDistance + 100) {
			// Too far - move closer but stop at optimal distance
			self.x += dx / distance * currentSpeed;
			self.y += dy / distance * currentSpeed;
		}
		// If between minDistance and optimalDistance+100, stay in place
		// Shooting logic
		self.shootTimer++;
		if (self.shootTimer >= self.shootCooldown && distance < 500) {
			self.shoot();
			self.shootTimer = 0;
		}
	};
	self.shoot = function () {
		var bullet = new Bullet(false);
		var angle = Math.atan2(player.y - self.y, player.x - self.x);
		bullet.direction = angle;
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.startX = self.x;
		bullet.startY = self.y;
		enemyBullets.push(bullet);
		game.addChild(bullet);
	};
	self.stun = function (duration) {
		self.stunned = true;
		self.stunTimer = duration;
		// Visual feedback for stunned enemy
		LK.effects.flashObject(self, 0xfff700, duration * 16.67);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		if (self.health <= 0) {
			self.active = false;
			LK.setScore(LK.getScore() + 10);
			gainXP(50); // Gain 50 XP per enemy killed
			gainCash(1); // Gain $1 per enemy killed
			LK.getSound('enemyHit').play();
			// Reduce slowdown cooldown by 5 seconds (300 ticks)
			if (slowdownCooldown > 0) {
				slowdownCooldown = Math.max(0, slowdownCooldown - 300);
			}
			// 40% chance to drop sniper weapon
			if (Math.random() < 0.4) {
				var sniperPickup = new Pickup('gun', self.x, self.y);
				sniperPickup.weapon = 'sniper'; // Force it to be sniper
				pickups.push(sniperPickup);
				game.addChild(sniperPickup);
			}
			// 20% chance to drop weapon pickup
			if (Math.random() < 0.2) {
				spawnPickup(self.x, self.y);
			}
			// 10% chance to drop shotgun ammo
			if (Math.random() < 0.1) {
				var ammoPickup = new ShotgunAmmo(self.x, self.y);
				shotgunAmmoPickups.push(ammoPickup);
				game.addChild(ammoPickup);
			}
		}
	};
	return self;
});
var Pickup = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.type = type; // 'gun' or 'melee'
	self.x = x;
	self.y = y;
	self.active = true;
	self.bobOffset = Math.random() * Math.PI * 2;
	self.startY = y;
	var pickupGraphics = self.attachAsset(type === 'gun' ? 'gunPickup' : 'meleePickup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Determine what weapon this pickup contains
	if (type === 'gun') {
		var guns = ['pistol', 'rifle', 'shotgun', 'sniper'];
		self.weapon = guns[Math.floor(Math.random() * guns.length)];
	} else {
		var melees = ['sword', 'hammer'];
		self.weapon = melees[Math.floor(Math.random() * melees.length)];
	}
	self.update = function () {
		if (!self.active) return;
		// Bobbing animation
		self.y = self.startY + Math.sin(LK.ticks * 0.1 + self.bobOffset) * 5;
		// Check pickup collision with player
		if (self.intersects(player)) {
			self.active = false;
			if (self.type === 'gun') {
				if (addWeaponToHotbar(self.weapon, 'gun')) {
					// Successfully added to hotbar
					LK.getSound('pickup').play();
					LK.setScore(LK.getScore() + 5);
				}
			} else {
				if (addWeaponToHotbar(self.weapon, 'melee')) {
					// Successfully added to hotbar
					LK.getSound('pickup').play();
					LK.setScore(LK.getScore() + 5);
				}
			}
			self.destroy();
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Gun display
	var gunGraphics = self.attachAsset('pistol', {
		anchorX: 0,
		anchorY: 0.5,
		x: 20,
		y: 0
	});
	// Melee weapon display
	var meleeGraphics = self.attachAsset('sword', {
		anchorX: 0.5,
		anchorY: 1,
		x: -15,
		y: -10
	});
	self.health = 10;
	self.maxHealth = 10;
	self.speed = 5;
	self.shootCooldown = 0;
	self.parryCooldown = 0;
	self.parryWindow = 0;
	self.invincibilityFrames = 0;
	// Weapon systems
	self.currentGun = 'pistol';
	self.currentMelee = 'sword';
	// Ammo system
	self.shotgunAmmo = 5;
	self.sniperAmmo = 5;
	self.rpgAmmo = 0;
	// Gun properties
	self.gunStats = {
		pistol: {
			cooldown: 12,
			spread: 0
		},
		rifle: {
			cooldown: 8,
			spread: 0.1
		},
		shotgun: {
			cooldown: 30,
			spread: 0.3,
			pellets: 3
		},
		sniper: {
			cooldown: 60,
			spread: 0,
			ammo: 5
		},
		rpg: {
			cooldown: 120,
			spread: 0,
			ammo: 1
		}
	};
	// Melee properties
	self.meleeStats = {
		sword: {
			parryWindow: 8,
			cooldown: 25,
			effect: 'reflect',
			color: 0x1abc9c
		},
		hammer: {
			parryWindow: 15,
			cooldown: 45,
			effect: 'shockwave',
			color: 0xe74c3c
		}
	};
	self.shoot = function (targetX, targetY) {
		if (self.shootCooldown > 0) return;
		// Check ammo for shotgun and sniper
		if (self.currentGun === 'shotgun' && self.shotgunAmmo <= 0) return;
		if (self.currentGun === 'sniper' && self.sniperAmmo <= 0) {
			// Remove sniper from hotbar when out of ammo
			removeWeaponFromHotbar('sniper');
			return;
		}
		if (self.currentGun === 'rpg' && self.rpgAmmo <= 0) {
			// Remove RPG from hotbar when out of ammo
			removeWeaponFromHotbar('rpg');
			return;
		}
		var gunStat = self.gunStats[self.currentGun];
		var baseAngle = Math.atan2(targetY - self.y, targetX - self.x);
		if (self.currentGun === 'shotgun') {
			// Shotgun fires multiple pellets and consumes ammo
			self.shotgunAmmo--;
			for (var i = 0; i < gunStat.pellets; i++) {
				var bullet = new Bullet(true, self.currentGun);
				bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
				bullet.x = self.x;
				bullet.y = self.y;
				bullet.startX = self.x;
				bullet.startY = self.y;
				playerBullets.push(bullet);
				game.addChild(bullet);
			}
		} else if (self.currentGun === 'sniper') {
			// Sniper fires single high-damage piercing bullet and consumes ammo
			self.sniperAmmo--;
			var bullet = new Bullet(true, self.currentGun);
			bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.startX = self.x;
			bullet.startY = self.y;
			playerBullets.push(bullet);
			game.addChild(bullet);
		} else if (self.currentGun === 'rpg') {
			// RPG fires explosive rocket and consumes ammo
			self.rpgAmmo--;
			var bullet = new Bullet(true, self.currentGun);
			bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.startX = self.x;
			bullet.startY = self.y;
			playerBullets.push(bullet);
			game.addChild(bullet);
		} else {
			var bullet = new Bullet(true, self.currentGun);
			bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.startX = self.x;
			bullet.startY = self.y;
			playerBullets.push(bullet);
			game.addChild(bullet);
		}
		LK.getSound('shoot').play();
		self.shootCooldown = gunStat.cooldown;
	};
	self.parry = function () {
		if (self.parryCooldown > 0) return;
		var meleeStat = self.meleeStats[self.currentMelee];
		self.parryWindow = 180; // 3 seconds at 60fps
		self.parryCooldown = meleeStat.cooldown;
		// Visual feedback
		var parryFX = game.attachAsset('parryEffect', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y,
			alpha: 0.8,
			tint: meleeStat.color
		});
		tween(parryFX, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 3000,
			// 3 seconds
			onFinish: function onFinish() {
				parryFX.destroy();
			}
		});
		LK.getSound('parry').play();
	};
	self.switchGun = function (newGun) {
		if (newGun && self.gunStats[newGun]) {
			self.currentGun = newGun;
			gunGraphics.destroy();
			gunGraphics = self.attachAsset(newGun, {
				anchorX: 0,
				anchorY: 0.5,
				x: 20,
				y: 0
			});
		}
	};
	self.switchMelee = function (newMelee) {
		if (newMelee && self.meleeStats[newMelee]) {
			self.currentMelee = newMelee;
			meleeGraphics.destroy();
			meleeGraphics = self.attachAsset(newMelee, {
				anchorX: 0.5,
				anchorY: 1,
				x: -15,
				y: -10
			});
		}
	};
	self.takeDamage = function () {
		self.health--;
		LK.effects.flashObject(self, 0xFF0000, 500);
		LK.getSound('playerHit').play();
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	self.heal = function (amount) {
		self.health = Math.min(self.health + amount, self.maxHealth);
	};
	self.update = function () {
		if (self.shootCooldown > 0) self.shootCooldown--;
		if (self.parryCooldown > 0) self.parryCooldown--;
		if (self.invincibilityFrames > 0) self.invincibilityFrames--;
		if (self.parryWindow > 0) {
			self.parryWindow--;
			// Check if parry window just expired without being used
			if (self.parryWindow === 0) {
				// Parry was missed, add 2 second cooldown
				self.parryCooldown = 120; // 2 seconds at 60fps
			}
		}
	};
	return self;
});
var RPG = Container.expand(function (x, y) {
	var self = Container.call(this);
	self.x = x;
	self.y = y;
	self.active = true;
	self.bobOffset = Math.random() * Math.PI * 2;
	self.startY = y;
	var rpgGraphics = self.attachAsset('rifle', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xe74c3c,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.update = function () {
		if (!self.active) return;
		// Bobbing animation
		self.y = self.startY + Math.sin(LK.ticks * 0.1 + self.bobOffset) * 5;
		// Check pickup collision with player
		if (self.intersects(player)) {
			self.active = false;
			if (addWeaponToHotbar('rpg', 'gun')) {
				LK.getSound('pickup').play();
				LK.setScore(LK.getScore() + 5);
			}
			self.destroy();
		}
	};
	return self;
});
var Room = Container.expand(function (level) {
	var self = Container.call(this);
	self.level = level || 1;
	self.enemies = [];
	self.pickups = [];
	self.cleared = false;
	self.door = null;
	self.generateRoom = function () {
		// Create border walls
		var wallSize = 60;
		var roomWidth = 2048;
		var roomHeight = 2732;
		var wallsX = Math.floor(roomWidth / wallSize);
		var wallsY = Math.floor(roomHeight / wallSize);
		// Top and bottom walls
		for (var i = 0; i < wallsX; i++) {
			var topWall = self.attachAsset('wall', {
				x: i * wallSize,
				y: 0
			});
			var bottomWall = self.attachAsset('wall', {
				x: i * wallSize,
				y: roomHeight - wallSize
			});
		}
		// Left and right walls
		for (var j = 1; j < wallsY - 1; j++) {
			var leftWall = self.attachAsset('wall', {
				x: 0,
				y: j * wallSize
			});
			var rightWall = self.attachAsset('wall', {
				x: roomWidth - wallSize,
				y: j * wallSize
			});
		}
		// Check if this is a boss room (every 10 rooms)
		if (self.level % 10 === 0) {
			// Boss fight
			var boss = new Boss(self.level);
			boss.x = roomWidth / 2;
			boss.y = roomHeight / 3;
			self.enemies.push(boss);
			self.addChild(boss);
			currentBoss = boss;
			// Show boss health bar
			bossHealthBarBg.alpha = 1;
			bossHealthBar.alpha = 1;
			bossNameText.alpha = 1;
			updateBossHealthBar();
		} else {
			// Generate regular enemies
			var enemyCount = Math.min(2 + self.level, 8);
			var blueEnemyCount = 0;
			// Blue enemies appear starting from wave 5
			if (self.level >= 5) {
				blueEnemyCount = Math.min(1 + Math.floor((self.level - 5) / 3), 3); // 1-3 blue enemies
				enemyCount = Math.max(1, enemyCount - blueEnemyCount); // Reduce regular enemies to maintain balance
			}
			// After wave 5, convert percentage of normal enemies to blue enemies
			var blueConversionRate = 0;
			if (self.level > 5) {
				// Start at 10% after wave 5, increase by 5% each wave, cap at 50%
				blueConversionRate = Math.min(0.1 + (self.level - 5) * 0.05, 0.5);
			}
			// Spawn regular enemies
			for (var k = 0; k < enemyCount; k++) {
				// Check if this enemy should be converted to blue
				if (self.level > 5 && Math.random() < blueConversionRate) {
					var convertedBlueEnemy = new BlueEnemy(self.level);
					convertedBlueEnemy.x = 200 + Math.random() * (roomWidth - 400);
					convertedBlueEnemy.y = 200 + Math.random() * (roomHeight - 400);
					self.enemies.push(convertedBlueEnemy);
					self.addChild(convertedBlueEnemy);
				} else {
					var enemy = new Enemy(self.level);
					enemy.x = 200 + Math.random() * (roomWidth - 400);
					enemy.y = 200 + Math.random() * (roomHeight - 400);
					self.enemies.push(enemy);
					self.addChild(enemy);
				}
			}
			// Spawn blue enemies starting from wave 5
			for (var b = 0; b < blueEnemyCount; b++) {
				var blueEnemy = new BlueEnemy(self.level);
				blueEnemy.x = 200 + Math.random() * (roomWidth - 400);
				blueEnemy.y = 200 + Math.random() * (roomHeight - 400);
				self.enemies.push(blueEnemy);
				self.addChild(blueEnemy);
			}
		}
		// Create exit door (initially locked)
		self.door = self.attachAsset('door', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: roomWidth / 2,
			y: wallSize / 2,
			tint: 0xc0392b
		});
		// Spawn shotgun pickup in room
		spawnShotgunPickup();
	};
	self.checkCleared = function () {
		var activeEnemies = 0;
		for (var i = 0; i < self.enemies.length; i++) {
			if (self.enemies[i].active) {
				activeEnemies++;
			}
		}
		if (activeEnemies === 0 && !self.cleared) {
			self.cleared = true;
			// Unlock door
			if (self.door) {
				tween(self.door, {
					tint: 0x27ae60
				}, {
					duration: 500
				});
			}
		}
		return self.cleared;
	};
	return self;
});
var ShotgunAmmo = Container.expand(function (x, y) {
	var self = Container.call(this);
	self.x = x;
	self.y = y;
	self.active = true;
	self.bobOffset = Math.random() * Math.PI * 2;
	self.startY = y;
	var ammoGraphics = self.attachAsset('shotgunAmmo', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (!self.active) return;
		// Bobbing animation
		self.y = self.startY + Math.sin(LK.ticks * 0.1 + self.bobOffset) * 5;
		// Check pickup collision with player
		if (self.intersects(player)) {
			self.active = false;
			player.shotgunAmmo += 3; // Give 3 ammo directly
			LK.getSound('pickup').play();
			LK.setScore(LK.getScore() + 2);
			updateUI(); // Update ammo display
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a1a
});

/**** 
* Game Code
****/ 
var player;
var currentRoom;
var playerBullets = [];
var enemyBullets = [];
var pickups = [];
var shotgunAmmoPickups = [];
var roomLevel = 1;
var dragStartX = 0;
var dragStartY = 0;
var isDragging = false;
var draggedWeapon = null;
var draggedSlot = null;
var trashIcon = null;
var selectedWeapon = null;
var selectedSlot = null;
// XP System
var playerXP = 0;
var playerLevel = 1;
var xpToNextLevel = 100;
var isLevelingUp = false;
var levelUpChoices = null;
var damageBonus = 0;
var rangeBonus = 1;
var piercingBonus = 0;
// Cash System
var playerCash = storage.playerCash || 0;
var isShopOpen = false;
var shopChoices = null;
var hasUpgradePistol = storage.hasUpgradePistol || false;
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 40,
	fill: '#ffffff'
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
// Health bar instead of text
var healthBarBg = LK.gui.topRight.attachAsset('wall', {
	width: 150,
	height: 20,
	anchorX: 1,
	anchorY: 0,
	tint: 0x7f8c8d
});
var healthBar = LK.gui.topRight.attachAsset('wall', {
	width: 150,
	height: 20,
	anchorX: 1,
	anchorY: 0,
	tint: 0xe74c3c
});
var roomText = new Text2('Room: 1', {
	size: 30,
	fill: '#3498db'
});
roomText.anchor.set(0, 0);
roomText.x = 120;
LK.gui.topLeft.addChild(roomText);
var gunText = new Text2('Gun: Pistol', {
	size: 28,
	fill: '#f39c12'
});
gunText.anchor.set(0, 1);
LK.gui.bottomLeft.addChild(gunText);
var meleeText = new Text2('Melee: Sword', {
	size: 28,
	fill: '#9b59b6'
});
meleeText.anchor.set(1, 1);
LK.gui.bottomRight.addChild(meleeText);
// Hotbar system
var hotbar = new Container();
hotbar.x = 1024; // Center of screen
hotbar.y = 2600; // Bottom of screen
game.addChild(hotbar);
// Cash counter to the left of hotbar
var cashText = new Text2('$0', {
	size: 40,
	fill: '#2ecc71'
});
cashText.anchor.set(1, 0.5);
cashText.x = -300; // Position to the left of hotbar
cashText.y = -80;
hotbar.addChild(cashText);
// Ammo counter to the left of hotbar
var ammoText = new Text2('Shotgun: 5', {
	size: 32,
	fill: '#f39c12'
});
ammoText.anchor.set(1, 0.5);
ammoText.x = -300; // Position to the left of hotbar
ammoText.y = 0;
hotbar.addChild(ammoText);
// Sniper ammo counter
var sniperAmmoText = new Text2('Sniper: 5', {
	size: 32,
	fill: '#8b4513'
});
sniperAmmoText.anchor.set(1, 0.5);
sniperAmmoText.x = -300;
sniperAmmoText.y = -40;
hotbar.addChild(sniperAmmoText);
// XP label above hotbar
var xpLabel = new Text2('XP', {
	size: 48,
	fill: '#ffffff'
});
xpLabel.anchor.set(0.5, 1);
xpLabel.x = 0;
xpLabel.y = -150;
hotbar.addChild(xpLabel);
// XP bar background above hotbar
var xpBarBg = hotbar.attachAsset('wall', {
	width: 400,
	height: 30,
	anchorX: 0.5,
	anchorY: 1,
	x: 0,
	y: -100,
	tint: 0x7f8c8d
});
// XP bar fill above hotbar
var xpBar = hotbar.attachAsset('wall', {
	width: 400,
	height: 30,
	anchorX: 0.5,
	anchorY: 1,
	x: 0,
	y: -100,
	tint: 0xe67e22
});
// Level display next to XP bar
var levelText = new Text2('Level 1', {
	size: 36,
	fill: '#ffffff'
});
levelText.anchor.set(0, 0.5);
levelText.x = 220;
levelText.y = -85;
hotbar.addChild(levelText);
// Boss health bar (initially hidden)
var bossHealthBarBg = LK.gui.top.attachAsset('wall', {
	width: 800,
	height: 30,
	anchorX: 0.5,
	anchorY: 0,
	y: 60,
	tint: 0x7f8c8d,
	alpha: 0
});
var bossHealthBar = LK.gui.top.attachAsset('wall', {
	width: 800,
	height: 30,
	anchorX: 0.5,
	anchorY: 0,
	y: 60,
	tint: 0x8e44ad,
	alpha: 0
});
var bossNameText = new Text2('BOSS', {
	size: 36,
	fill: '#8e44ad'
});
bossNameText.anchor.set(0.5, 1);
bossNameText.y = 55;
bossNameText.alpha = 0;
LK.gui.top.addChild(bossNameText);
var hotbarSlots = [];
var slotWidth = 80;
var slotHeight = 80;
var slotSpacing = 100;
// Create 5 hotbar slots
for (var h = 0; h < 5; h++) {
	var slot = hotbar.attachAsset('wall', {
		width: slotWidth,
		height: slotHeight,
		anchorX: 0.5,
		anchorY: 0.5,
		x: (h - 2) * slotSpacing,
		y: 0,
		tint: 0x2c3e50
	});
	slot.slotIndex = h;
	slot.weapon = null;
	slot.weaponType = null; // 'gun' or 'melee'
	// Visual weapon display
	slot.weaponGraphics = null;
	slot.down = function (x, y, obj) {
		if (this.weapon) {
			// Select weapon and light up trash
			selectedWeapon = this.weapon;
			selectedSlot = this;
			// Highlight the selected slot
			tween(this, {
				tint: 0x3498db
			}, {
				duration: 100
			});
			// Light up trash icon
			tween(trashIcon, {
				tint: 0xff6b6b
			}, {
				duration: 100
			});
		}
	};
	slot.up = function (x, y, obj) {
		// Switch to this weapon if it's selected but not the same as current selection
		if (selectedWeapon && selectedSlot === this) {
			if (this.weaponType === 'gun') {
				player.switchGun(this.weapon);
			} else if (this.weaponType === 'melee') {
				player.switchMelee(this.weapon);
			}
			updateUI();
		}
	};
	hotbarSlots.push(slot);
}
// Create trash icon next to hotbar
trashIcon = hotbar.attachAsset('trashIcon', {
	width: 60,
	height: 60,
	anchorX: 0.5,
	anchorY: 0.5,
	x: 350,
	// Position to the right of hotbar
	y: 0,
	tint: 0xc0392b
});
// Add click handler to trash icon
trashIcon.down = function (x, y, obj) {
	if (selectedWeapon && selectedSlot) {
		// Delete weapon from selected slot
		selectedSlot.weapon = null;
		selectedSlot.weaponType = null;
		if (selectedSlot.weaponGraphics) {
			selectedSlot.weaponGraphics.destroy();
			selectedSlot.weaponGraphics = null;
		}
		// Reset slot color
		tween(selectedSlot, {
			tint: 0x2c3e50
		}, {
			duration: 100
		});
		// Flash trash icon to show deletion
		tween(trashIcon, {
			tint: 0xff0000
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(trashIcon, {
					tint: 0xc0392b
				}, {
					duration: 200
				});
			}
		});
		// Clear selection
		selectedWeapon = null;
		selectedSlot = null;
	}
};
// Add visual indicator for trash (X symbol)
var trashX1 = hotbar.attachAsset('wall', {
	width: 30,
	height: 4,
	anchorX: 0.5,
	anchorY: 0.5,
	x: 350,
	y: 0,
	rotation: Math.PI / 4,
	tint: 0xffffff
});
var trashX2 = hotbar.attachAsset('wall', {
	width: 30,
	height: 4,
	anchorX: 0.5,
	anchorY: 0.5,
	x: 350,
	y: 0,
	rotation: -Math.PI / 4,
	tint: 0xffffff
});
// Create parry button
var parryButton = game.attachAsset('parryButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 200,
	y: 2500,
	scaleX: 2,
	scaleY: 2
});
// Create slowdown button
var slowdownButton = game.attachAsset('parryButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1848,
	// Mirror parry button position on right side
	y: 2500,
	// Same Y position as parry button
	tint: 0x3498db,
	scaleX: 2,
	scaleY: 2
});
// Slowdown system variables
var slowdownCooldown = 0;
var slowdownActive = false;
var slowdownDuration = 0;
var maxSlowdownCooldown = 3000; // 50 seconds at 60fps
var slowdownEffect = 0.3; // 70% slow (30% of original speed)
// Add parry button text
var parryButtonText = new Text2('PARRY', {
	size: 48,
	fill: '#ffffff'
});
parryButtonText.anchor.set(0.5, 0.5);
parryButtonText.x = 200;
parryButtonText.y = 2500;
game.addChild(parryButtonText);
// Add slowdown button text
var slowdownButtonText = new Text2('SLOW', {
	size: 48,
	fill: '#ffffff'
});
slowdownButtonText.anchor.set(0.5, 0.5);
slowdownButtonText.x = 1848;
slowdownButtonText.y = 2500;
game.addChild(slowdownButtonText);
// Add slowdown cooldown text
var slowdownCooldownText = new Text2('', {
	size: 24,
	fill: '#ffffff'
});
slowdownCooldownText.anchor.set(0.5, 0.5);
slowdownCooldownText.x = 1848;
slowdownCooldownText.y = 2400;
game.addChild(slowdownCooldownText);
// Add parry button click handler
parryButton.down = function (x, y, obj) {
	player.parry();
	// Visual feedback on button press
	tween(parryButton, {
		scaleX: 0.9,
		scaleY: 0.9,
		tint: 0x16a085
	}, {
		duration: 100,
		onFinish: function onFinish() {
			tween(parryButton, {
				scaleX: 1,
				scaleY: 1,
				tint: 0x1abc9c
			}, {
				duration: 100
			});
		}
	});
};
// Add slowdown button click handler
slowdownButton.down = function (x, y, obj) {
	if (slowdownCooldown <= 0 && !slowdownActive) {
		// Activate slowdown
		slowdownActive = true;
		slowdownDuration = 600; // 10 seconds at 60fps
		slowdownCooldown = maxSlowdownCooldown;
		// Visual feedback on button press
		tween(slowdownButton, {
			scaleX: 0.9,
			scaleY: 0.9,
			tint: 0x2980b9
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(slowdownButton, {
					scaleX: 1,
					scaleY: 1,
					tint: 0xe74c3c // Red when on cooldown
				}, {
					duration: 100
				});
			}
		});
	}
};
// Set initial weapons in hotbar
hotbarSlots[0].weapon = 'pistol';
hotbarSlots[0].weaponType = 'gun';
hotbarSlots[0].weaponGraphics = hotbarSlots[0].attachAsset('pistol', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
hotbarSlots[1].weapon = 'sword';
hotbarSlots[1].weaponType = 'melee';
hotbarSlots[1].weaponGraphics = hotbarSlots[1].attachAsset('sword', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
hotbarSlots[2].weapon = 'rifle';
hotbarSlots[2].weaponType = 'gun';
hotbarSlots[2].weaponGraphics = hotbarSlots[2].attachAsset('rifle', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
function updateUI() {
	scoreText.setText('Score: ' + LK.getScore());
	// Update health bar
	var healthPercent = player.health / player.maxHealth;
	healthBar.width = 150 * healthPercent;
	roomText.setText('Room: ' + roomLevel);
	gunText.setText('Gun: ' + player.currentGun.charAt(0).toUpperCase() + player.currentGun.slice(1));
	meleeText.setText('Melee: ' + player.currentMelee.charAt(0).toUpperCase() + player.currentMelee.slice(1));
	// Update ammo counter
	ammoText.setText('Shotgun: ' + player.shotgunAmmo);
	// Update sniper ammo counter
	sniperAmmoText.setText('Sniper: ' + player.sniperAmmo);
	// Update XP bar display
	var xpPercent = playerXP / xpToNextLevel;
	xpBar.width = 400 * xpPercent;
	levelText.setText('Level ' + playerLevel);
	// Update cash display
	cashText.setText('$' + playerCash);
}
function updateBossHealthBar() {
	if (currentBoss && currentBoss.active) {
		var healthPercent = currentBoss.health / currentBoss.maxHealth;
		bossHealthBar.width = 800 * healthPercent;
	}
}
function gainXP(amount) {
	playerXP += amount;
	if (playerXP >= xpToNextLevel && !isLevelingUp) {
		levelUp();
	}
}
function gainCash(amount) {
	playerCash += amount;
	storage.playerCash = playerCash;
}
function levelUp() {
	isLevelingUp = true;
	playerLevel++;
	playerXP -= xpToNextLevel;
	xpToNextLevel = Math.floor(xpToNextLevel * 1.5);
	// Create level up choices overlay
	showLevelUpChoices();
}
function showLevelUpChoices() {
	// Create overlay background
	var overlay = game.attachAsset('wall', {
		width: 2048,
		height: 2732,
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0,
		alpha: 0.8,
		tint: 0x000000
	});
	// Randomly select 3 different upgrade options
	var availableUpgrades = [{
		id: 'hp',
		text: '+5 Max HP',
		color: 0x27ae60
	}, {
		id: 'damage',
		text: '+2 Damage',
		color: 0xe74c3c
	}, {
		id: 'range',
		text: '+Range',
		color: 0x3498db
	}, {
		id: 'piercing',
		text: '+1 Piercing',
		color: 0xf39c12
	}];
	// Shuffle and pick 3 random upgrades
	var selectedUpgrades = [];
	var tempUpgrades = availableUpgrades.slice(); // Create copy
	for (var i = 0; i < 3; i++) {
		var randomIndex = Math.floor(Math.random() * tempUpgrades.length);
		selectedUpgrades.push(tempUpgrades[randomIndex]);
		tempUpgrades.splice(randomIndex, 1);
	}
	// Create choice buttons
	var choiceY = 1366; // Center Y
	var choiceSpacing = 400;
	var choices = [];
	var choiceTexts = [];
	for (var j = 0; j < 3; j++) {
		var upgrade = selectedUpgrades[j];
		var xPos = 1024 + (j - 1) * choiceSpacing;
		var choice = game.attachAsset('wall', {
			width: 300,
			height: 100,
			anchorX: 0.5,
			anchorY: 0.5,
			x: xPos,
			y: choiceY,
			tint: upgrade.color
		});
		var choiceText = new Text2(upgrade.text, {
			size: 36,
			fill: '#ffffff'
		});
		choiceText.anchor.set(0.5, 0.5);
		choiceText.x = xPos;
		choiceText.y = choiceY;
		game.addChild(choiceText);
		// Store upgrade id on the choice button
		choice.upgradeId = upgrade.id;
		choice.down = function () {
			chooseLevelUpOption(this.upgradeId);
		};
		choices.push(choice);
		choiceTexts.push(choiceText);
	}
	// Store references for cleanup
	levelUpChoices = {
		overlay: overlay,
		choices: choices,
		choiceTexts: choiceTexts
	};
}
function chooseLevelUpOption(choice) {
	if (!isLevelingUp || !levelUpChoices) return;
	// Apply the chosen upgrade
	switch (choice) {
		case 'damage':
			damageBonus += 2;
			break;
		case 'hp':
			player.maxHealth += 5;
			player.health += 5;
			break;
		case 'range':
			rangeBonus += 0.2;
			break;
		case 'piercing':
			piercingBonus++;
			break;
	}
	// Clean up level up UI
	levelUpChoices.overlay.destroy();
	for (var i = 0; i < levelUpChoices.choices.length; i++) {
		levelUpChoices.choices[i].destroy();
		levelUpChoices.choiceTexts[i].destroy();
	}
	levelUpChoices = null;
	isLevelingUp = false;
	updateUI();
}
function spawnPickup(x, y) {
	var pickupType = Math.random() < 0.6 ? 'gun' : 'melee';
	var pickup = new Pickup(pickupType, x, y);
	pickups.push(pickup);
	game.addChild(pickup);
}
function addWeaponToHotbar(weapon, weaponType) {
	// Find first empty slot
	for (var i = 0; i < hotbarSlots.length; i++) {
		var slot = hotbarSlots[i];
		if (!slot.weapon) {
			slot.weapon = weapon;
			slot.weaponType = weaponType;
			// Remove old graphics if any
			if (slot.weaponGraphics) {
				slot.weaponGraphics.destroy();
			}
			// Add new weapon graphics
			slot.weaponGraphics = slot.attachAsset(weapon, {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.8,
				scaleY: 0.8
			});
			return true;
		}
	}
	return false; // No empty slots
}
function removeWeaponFromHotbar(weapon) {
	// Find and remove the weapon from hotbar
	for (var i = 0; i < hotbarSlots.length; i++) {
		var slot = hotbarSlots[i];
		if (slot.weapon === weapon) {
			// If this was the current weapon, switch to pistol
			if (player.currentGun === weapon) {
				player.switchGun('pistol');
			}
			// Clear the slot
			slot.weapon = null;
			slot.weaponType = null;
			if (slot.weaponGraphics) {
				slot.weaponGraphics.destroy();
				slot.weaponGraphics = null;
			}
			// Reset slot color
			slot.tint = 0x2c3e50;
			// Clear selection if this weapon was selected
			if (selectedWeapon === weapon && selectedSlot === slot) {
				selectedWeapon = null;
				selectedSlot = null;
			}
			updateUI();
			return true;
		}
	}
	return false;
}
// Spawn shotgun pickup in each room
function spawnShotgunPickup() {
	var shotgunPickup = new Pickup('gun', 300 + Math.random() * 1400, 400 + Math.random() * 1800);
	shotgunPickup.weapon = 'shotgun'; // Force it to be shotgun
	pickups.push(shotgunPickup);
	game.addChild(shotgunPickup);
}
function generateNewRoom() {
	// Check if shop should appear (every 4 waves)
	if (roomLevel > 0 && roomLevel % 4 === 0 && !isShopOpen) {
		showShop();
		return;
	}
	// Clear current room
	if (currentRoom) {
		currentRoom.destroy();
	}
	// Clear boss reference and hide boss health bar
	currentBoss = null;
	if (bossHealthBarBg) {
		bossHealthBarBg.alpha = 0;
		bossHealthBar.alpha = 0;
		bossNameText.alpha = 0;
	}
	// Clear bullets and pickups
	for (var i = 0; i < playerBullets.length; i++) {
		playerBullets[i].destroy();
	}
	for (var j = 0; j < enemyBullets.length; j++) {
		enemyBullets[j].destroy();
	}
	for (var k = 0; k < pickups.length; k++) {
		pickups[k].destroy();
	}
	for (var l = 0; l < shotgunAmmoPickups.length; l++) {
		shotgunAmmoPickups[l].destroy();
	}
	playerBullets = [];
	enemyBullets = [];
	pickups = [];
	shotgunAmmoPickups = [];
	// Create new room
	roomLevel++;
	currentRoom = new Room(roomLevel);
	currentRoom.generateRoom();
	game.addChild(currentRoom);
	// Reset player position
	player.x = 1024;
	player.y = 2400;
	game.addChild(player);
	// Regenerate HP when entering new room
	player.heal(1); // Heal 1 HP when entering a new room
	updateUI();
}
// Game state management
var gameStarted = false;
var weaponSelectionUI = null;
var currentBoss = null;
// Show weapon selection screen
function showWeaponSelection() {
	// Create overlay background
	var overlay = game.attachAsset('wall', {
		width: 2048,
		height: 2732,
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0,
		alpha: 0.9,
		tint: 0x2c3e50
	});
	// Title text
	var titleText = new Text2('Choose Your Weapon', {
		size: 60,
		fill: '#ffffff'
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 800;
	game.addChild(titleText);
	// Create weapon choice buttons
	var choiceY = 1366; // Center Y
	var choiceSpacing = 400;
	// Hammer choice
	var hammerChoice = game.attachAsset('wall', {
		width: 300,
		height: 200,
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024 - choiceSpacing,
		y: choiceY,
		tint: 0x8e44ad
	});
	var hammerIcon = game.attachAsset('hammer', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024 - choiceSpacing,
		y: choiceY - 20,
		scaleX: 3,
		scaleY: 3
	});
	var hammerText = new Text2('HAMMER', {
		size: 32,
		fill: '#ffffff'
	});
	hammerText.anchor.set(0.5, 0.5);
	hammerText.x = 1024 - choiceSpacing;
	hammerText.y = choiceY + 50;
	game.addChild(hammerText);
	var hammerDesc = new Text2('Kills enemies\nwhen parrying', {
		size: 24,
		fill: '#ecf0f1'
	});
	hammerDesc.anchor.set(0.5, 0.5);
	hammerDesc.x = 1024 - choiceSpacing;
	hammerDesc.y = choiceY + 80;
	game.addChild(hammerDesc);
	// Sword choice
	var swordChoice = game.attachAsset('wall', {
		width: 300,
		height: 200,
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024 + choiceSpacing,
		y: choiceY,
		tint: 0xe67e22
	});
	var swordIcon = game.attachAsset('sword', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024 + choiceSpacing,
		y: choiceY - 20,
		scaleX: 3,
		scaleY: 3
	});
	var swordText = new Text2('SWORD', {
		size: 32,
		fill: '#ffffff'
	});
	swordText.anchor.set(0.5, 0.5);
	swordText.x = 1024 + choiceSpacing;
	swordText.y = choiceY + 50;
	game.addChild(swordText);
	var swordDesc = new Text2('Gives invincibility\nframes when parrying', {
		size: 24,
		fill: '#ecf0f1'
	});
	swordDesc.anchor.set(0.5, 0.5);
	swordDesc.x = 1024 + choiceSpacing;
	swordDesc.y = choiceY + 80;
	game.addChild(swordDesc);
	// Store references for cleanup
	weaponSelectionUI = {
		overlay: overlay,
		titleText: titleText,
		hammerChoice: hammerChoice,
		hammerIcon: hammerIcon,
		hammerText: hammerText,
		hammerDesc: hammerDesc,
		swordChoice: swordChoice,
		swordIcon: swordIcon,
		swordText: swordText,
		swordDesc: swordDesc
	};
	// Add click handlers
	hammerChoice.down = function () {
		chooseWeapon('hammer');
	};
	swordChoice.down = function () {
		chooseWeapon('sword');
	};
}
// Handle weapon selection
function chooseWeapon(weaponType) {
	if (!weaponSelectionUI) return;
	// Clean up weapon selection UI
	weaponSelectionUI.overlay.destroy();
	weaponSelectionUI.titleText.destroy();
	weaponSelectionUI.hammerChoice.destroy();
	weaponSelectionUI.hammerIcon.destroy();
	weaponSelectionUI.hammerText.destroy();
	weaponSelectionUI.hammerDesc.destroy();
	weaponSelectionUI.swordChoice.destroy();
	weaponSelectionUI.swordIcon.destroy();
	weaponSelectionUI.swordText.destroy();
	weaponSelectionUI.swordDesc.destroy();
	weaponSelectionUI = null;
	// Start the game with chosen weapon
	startGameWithWeapon(weaponType);
}
// Initialize game with chosen weapon
function startGameWithWeapon(startingWeapon) {
	gameStarted = true;
	// Initialize game
	currentRoom = new Room(roomLevel);
	currentRoom.generateRoom();
	game.addChild(currentRoom);
	player = new Player();
	player.x = 1024;
	player.y = 2400;
	game.addChild(player);
	// Set the chosen starting weapon
	player.switchMelee(startingWeapon);
	// Update hotbar to reflect chosen weapon
	hotbarSlots[1].weapon = startingWeapon;
	hotbarSlots[1].weaponType = 'melee';
	if (hotbarSlots[1].weaponGraphics) {
		hotbarSlots[1].weaponGraphics.destroy();
	}
	hotbarSlots[1].weaponGraphics = hotbarSlots[1].attachAsset(startingWeapon, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8
	});
	updateUI();
}
// Show weapon selection at start
showWeaponSelection();
// Touch controls
game.down = function (x, y, obj) {
	isDragging = true;
	dragStartX = x;
	dragStartY = y;
};
game.move = function (x, y, obj) {
	// Update aim position for rifle full auto
	if (isRightClickHeld && player.currentGun === 'rifle') {
		dragStartX = x;
		dragStartY = y;
	}
};
game.up = function (x, y, obj) {
	if (isDragging && !isRightClickHeld) {
		var dx = x - dragStartX;
		var dy = y - dragStartY;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 30) {
			// Check if this is a potential parry (tap in bottom area of screen or near parry button)
			var parryButtonDistance = Math.sqrt((x - 200) * (x - 200) + (y - 2500) * (y - 2500));
			if (y > 2200 || parryButtonDistance < 120) {
				// Tap in bottom area or near parry button - parry
				player.parry();
			} else {
				// Tap elsewhere - shoot
				player.shoot(x, y);
			}
		}
	}
	isDragging = false;
	isRightClickHeld = false;
	rightClickDetected = false;
};
// Double click variables for movement system
var lastClickTime = 0;
var doubleClickThreshold = 300; // milliseconds
var rightClickDetected = false;
var isRightClickHeld = false;
var fullAutoTimer = 0;
var fullAutoInterval = 8; // Fire every 8 ticks for rifle full auto
// Function to handle double click movement
function handleDoubleClick(x, y) {
	// Move player to clicked position with smooth movement
	var targetX = Math.max(80, Math.min(1968, x));
	var targetY = Math.max(80, Math.min(2652, y));
	// Use tween for smooth movement
	tween(player, {
		x: targetX,
		y: targetY
	}, {
		duration: 500
	});
}
// Override the existing down handler to detect double clicks and right clicks
game.down = function (x, y, obj) {
	var currentTime = Date.now();
	// Check for right click (simulate with touch hold detection)
	// We'll detect right click as a hold that lasts longer than normal tap
	LK.setTimeout(function () {
		if (isDragging && !rightClickDetected) {
			// This is a right click hold
			isRightClickHeld = true;
			rightClickDetected = true;
			fullAutoTimer = 0;
		}
	}, 200); // 200ms to detect hold
	if (currentTime - lastClickTime < doubleClickThreshold) {
		// Double click detected
		handleDoubleClick(x, y);
		lastClickTime = 0; // Reset to prevent triple click
	} else {
		// Single click - start drag
		isDragging = true;
		dragStartX = x;
		dragStartY = y;
		lastClickTime = currentTime;
	}
};
// Main game loop
game.update = function () {
	if (!gameStarted || !player || !currentRoom || isLevelingUp || isShopOpen) return;
	// Update player
	player.update();
	// Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		bullet.update();
		if (!bullet.active) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		for (var j = 0; j < currentRoom.enemies.length; j++) {
			var enemy = currentRoom.enemies[j];
			if (enemy.active && bullet.intersects(enemy)) {
				// Handle RPG explosion
				if (bullet.gunType === 'rpg' && bullet.isExplosive) {
					// Explosion damages all enemies in range
					for (var exp = 0; exp < currentRoom.enemies.length; exp++) {
						var expEnemy = currentRoom.enemies[exp];
						if (expEnemy.active) {
							var expDx = expEnemy.x - bullet.x;
							var expDy = expEnemy.y - bullet.y;
							var expDistance = Math.sqrt(expDx * expDx + expDy * expDy);
							if (expDistance < 200) {
								// Explosion radius
								var explosionDamage = expEnemy.isBoss ? 30 : 40;
								expEnemy.takeDamage(explosionDamage);
							}
						}
					}
					// Visual explosion effect
					LK.effects.flashScreen(0xff6b35, 500);
					bullet.active = false;
					bullet.destroy();
					playerBullets.splice(i, 1);
					break;
				} else {
					enemy.takeDamage(bullet.damage);
					// Handle sniper piercing
					if (bullet.gunType === 'sniper' && bullet.pierceCount < bullet.maxPierce) {
						bullet.pierceCount++;
						// Continue through enemy, don't destroy bullet
					} else {
						bullet.active = false;
						bullet.destroy();
						playerBullets.splice(i, 1);
					}
					break;
				}
			}
		}
	}
	// Update enemy bullets
	for (var k = enemyBullets.length - 1; k >= 0; k--) {
		var enemyBullet = enemyBullets[k];
		enemyBullet.update();
		if (!enemyBullet.active) {
			enemyBullet.destroy();
			enemyBullets.splice(k, 1);
			continue;
		}
		// Check collision with player
		if (enemyBullet.intersects(player)) {
			if (player.parryWindow > 0) {
				// Successful parry - find the enemy that shot this bullet and stun them
				var bulletShooter = null;
				var shortestDistance = Infinity;
				for (var bulletCheck = 0; bulletCheck < currentRoom.enemies.length; bulletCheck++) {
					var checkEnemy = currentRoom.enemies[bulletCheck];
					if (checkEnemy.active) {
						var checkDx = checkEnemy.x - enemyBullet.x;
						var checkDy = checkEnemy.y - enemyBullet.y;
						var checkDistance = Math.sqrt(checkDx * checkDx + checkDy * checkDy);
						if (checkDistance < shortestDistance) {
							shortestDistance = checkDistance;
							bulletShooter = checkEnemy;
						}
					}
				}
				// Stun the enemy that shot the bullet
				if (bulletShooter) {
					if (bulletShooter.isBoss) {
						// Boss takes 5 damage when parried, cannot be stunned or killed by parry
						bulletShooter.takeDamage(5);
					} else if (player.currentMelee === 'hammer') {
						// Hammer kills the enemy instead of stunning
						bulletShooter.takeDamage(bulletShooter.health);
					} else if (player.currentMelee === 'sword') {
						// Sword stuns enemy for 5 seconds (works on both regular and blue enemies)
						bulletShooter.stun(300); // Stun for 5 seconds (300 ticks at 60fps)
					} else {
						// Other weapons stun the enemy for 2 seconds
						bulletShooter.stun(120); // Stun for 2 seconds (120 ticks at 60fps)
					}
				}
				var meleeStat = player.meleeStats[player.currentMelee];
				// Give sword users 5 seconds of invincibility frames
				if (player.currentMelee === 'sword') {
					player.invincibilityFrames = 300; // 5 seconds at 60fps
					// Visual feedback for invincibility
					tween(player, {
						alpha: 0.5
					}, {
						duration: 5000,
						onFinish: function onFinish() {
							player.alpha = 1;
						}
					});
				}
				if (meleeStat.effect === 'reflect') {
					// Reflect bullet back
					var reflectedBullet = new Bullet(true, 'pistol');
					reflectedBullet.x = enemyBullet.x;
					reflectedBullet.y = enemyBullet.y;
					reflectedBullet.startX = enemyBullet.x;
					reflectedBullet.startY = enemyBullet.y;
					reflectedBullet.direction = enemyBullet.direction + Math.PI;
					reflectedBullet.speed = 15;
					playerBullets.push(reflectedBullet);
					game.addChild(reflectedBullet);
				} else if (meleeStat.effect === 'shockwave') {
					// Damage nearby enemies
					for (var l = 0; l < currentRoom.enemies.length; l++) {
						var nearbyEnemy = currentRoom.enemies[l];
						var dx = nearbyEnemy.x - player.x;
						var dy = nearbyEnemy.y - player.y;
						var distance = Math.sqrt(dx * dx + dy * dy);
						if (distance < 150 && nearbyEnemy.active) {
							if (nearbyEnemy.isBoss) {
								// Boss takes 5 damage from shockwave, cannot be killed
								nearbyEnemy.takeDamage(5);
							} else if (player.currentMelee === 'hammer') {
								// Hammer kills nearby enemies (works on both regular and blue enemies)
								nearbyEnemy.takeDamage(nearbyEnemy.health);
							} else {
								// Other weapons damage nearby enemies
								nearbyEnemy.takeDamage(2);
							}
						}
					}
				}
				LK.effects.flashObject(player, meleeStat.color, 300);
				LK.setScore(LK.getScore() + 3);
			} else {
				// Player takes damage (unless they have invincibility frames)
				if (!player.invincibilityFrames || player.invincibilityFrames <= 0) {
					player.takeDamage();
				}
			}
			enemyBullet.active = false;
			enemyBullet.destroy();
			enemyBullets.splice(k, 1);
		}
	}
	// Update enemies
	for (var m = 0; m < currentRoom.enemies.length; m++) {
		var enemy = currentRoom.enemies[m];
		if (enemy.active) {
			enemy.update();
		}
	}
	// Update pickups
	for (var n = pickups.length - 1; n >= 0; n--) {
		var pickup = pickups[n];
		pickup.update();
		if (!pickup.active) {
			pickups.splice(n, 1);
		}
	}
	// Update shotgun ammo pickups
	for (var o = shotgunAmmoPickups.length - 1; o >= 0; o--) {
		var ammoPickup = shotgunAmmoPickups[o];
		ammoPickup.update();
		if (!ammoPickup.active) {
			shotgunAmmoPickups.splice(o, 1);
		}
	}
	// Check room completion
	if (currentRoom.checkCleared()) {
		// Check if player reaches door
		if (currentRoom.door && player.intersects(currentRoom.door)) {
			generateNewRoom();
		}
	}
	// Reset trash icon when no weapon is selected
	if (!selectedWeapon && trashIcon.tint !== 0xc0392b) {
		tween(trashIcon, {
			tint: 0xc0392b
		}, {
			duration: 100
		});
	}
	// Handle aimed shooting for rifle while held
	if (isRightClickHeld && player.currentGun === 'rifle') {
		fullAutoTimer++;
		if (fullAutoTimer >= fullAutoInterval) {
			// Use current mouse/touch position for aiming
			var currentX = dragStartX; // This gets updated in move handler
			var currentY = dragStartY; // This gets updated in move handler
			player.shoot(currentX, currentY);
			fullAutoTimer = 0;
		}
	}
	// Update slowdown system
	if (slowdownCooldown > 0) {
		slowdownCooldown--;
	}
	if (slowdownDuration > 0) {
		slowdownDuration--;
		if (slowdownDuration <= 0) {
			slowdownActive = false;
			// Reset button color when slowdown ends
			tween(slowdownButton, {
				tint: 0x3498db
			}, {
				duration: 200
			});
		}
	}
	// Update slowdown button display
	if (slowdownCooldown > 0) {
		var secondsLeft = Math.ceil(slowdownCooldown / 60);
		slowdownCooldownText.setText(secondsLeft + 's');
		slowdownButton.tint = 0xe74c3c; // Red when on cooldown
	} else {
		slowdownCooldownText.setText('');
		if (!slowdownActive) {
			slowdownButton.tint = 0x3498db; // Blue when ready
		}
	}
	// Update UI periodically
	if (LK.ticks % 30 === 0) {
		updateUI();
	}
};
function showShop() {
	isShopOpen = true;
	// Create overlay background
	var overlay = game.attachAsset('wall', {
		width: 2048,
		height: 2732,
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0,
		alpha: 0.9,
		tint: 0x2c3e50
	});
	// Title text
	var titleText = new Text2('SHOPKEEPER', {
		size: 60,
		fill: '#f39c12'
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 600;
	game.addChild(titleText);
	// Available shop items
	var shopItems = [];
	// Always include upgrade pistol if not owned
	if (!hasUpgradePistol) {
		shopItems.push({
			id: 'upgradePistol',
			name: 'Upgraded Pistol',
			price: 15,
			description: 'Better damage\nand fire rate'
		});
	}
	// Add random items
	var randomItems = [{
		id: 'health',
		name: '+5 Max HP',
		price: 10,
		description: 'Increase health'
	}, {
		id: 'damage',
		name: '+3 Damage',
		price: 12,
		description: 'More damage'
	}, {
		id: 'rpg',
		name: 'RPG Launcher',
		price: 30,
		description: '40 damage explosion\n30 on bosses'
	}];
	// Add 2-3 random items
	var itemsToAdd = Math.min(3 - shopItems.length, randomItems.length);
	for (var i = 0; i < itemsToAdd; i++) {
		if (randomItems.length > 0) {
			var randomIndex = Math.floor(Math.random() * randomItems.length);
			shopItems.push(randomItems[randomIndex]);
			randomItems.splice(randomIndex, 1);
		}
	}
	// Create shop item buttons
	var choiceY = 1366;
	var choiceSpacing = 300;
	var choices = [];
	var choiceTexts = [];
	var choiceDescTexts = [];
	for (var j = 0; j < shopItems.length; j++) {
		var item = shopItems[j];
		var xPos = 1024 + (j - Math.floor(shopItems.length / 2)) * choiceSpacing;
		var choice = game.attachAsset('wall', {
			width: 250,
			height: 150,
			anchorX: 0.5,
			anchorY: 0.5,
			x: xPos,
			y: choiceY,
			tint: playerCash >= item.price ? 0x27ae60 : 0xe74c3c
		});
		var nameText = new Text2(item.name, {
			size: 24,
			fill: '#ffffff'
		});
		nameText.anchor.set(0.5, 0.5);
		nameText.x = xPos;
		nameText.y = choiceY - 30;
		game.addChild(nameText);
		var priceText = new Text2('$' + item.price, {
			size: 32,
			fill: '#f39c12'
		});
		priceText.anchor.set(0.5, 0.5);
		priceText.x = xPos;
		priceText.y = choiceY + 20;
		game.addChild(priceText);
		var descText = new Text2(item.description, {
			size: 18,
			fill: '#ecf0f1'
		});
		descText.anchor.set(0.5, 0.5);
		descText.x = xPos;
		descText.y = choiceY + 50;
		game.addChild(descText);
		choice.shopItem = item;
		choice.down = function () {
			buyItem(this.shopItem);
		};
		choices.push(choice);
		choiceTexts.push(nameText);
		choiceTexts.push(priceText);
		choiceDescTexts.push(descText);
	}
	// Continue button
	var continueButton = game.attachAsset('wall', {
		width: 200,
		height: 80,
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 2000,
		tint: 0x3498db
	});
	var continueText = new Text2('CONTINUE', {
		size: 36,
		fill: '#ffffff'
	});
	continueText.anchor.set(0.5, 0.5);
	continueText.x = 1024;
	continueText.y = 2000;
	game.addChild(continueText);
	continueButton.down = function () {
		closeShop();
	};
	// Store references for cleanup
	shopChoices = {
		overlay: overlay,
		titleText: titleText,
		choices: choices,
		choiceTexts: choiceTexts,
		choiceDescTexts: choiceDescTexts,
		continueButton: continueButton,
		continueText: continueText
	};
}
function buyItem(item) {
	if (playerCash < item.price) return;
	playerCash -= item.price;
	storage.playerCash = playerCash;
	switch (item.id) {
		case 'upgradePistol':
			hasUpgradePistol = true;
			storage.hasUpgradePistol = true;
			// Upgrade pistol stats
			player.gunStats.pistol.cooldown = 8;
			player.gunStats.pistol.damage = 8;
			break;
		case 'health':
			player.maxHealth += 5;
			player.health += 5;
			break;
		case 'damage':
			damageBonus += 3;
			break;
		case 'rpg':
			player.rpgAmmo = 1;
			if (!addWeaponToHotbar('rpg', 'gun')) {
				// If hotbar full, give ammo anyway
				player.rpgAmmo = 1;
			}
			break;
	}
	updateUI();
	closeShop();
}
function closeShop() {
	if (!shopChoices) return;
	// Clean up shop UI
	shopChoices.overlay.destroy();
	shopChoices.titleText.destroy();
	shopChoices.continueButton.destroy();
	shopChoices.continueText.destroy();
	for (var i = 0; i < shopChoices.choices.length; i++) {
		shopChoices.choices[i].destroy();
	}
	for (var j = 0; j < shopChoices.choiceTexts.length; j++) {
		shopChoices.choiceTexts[j].destroy();
	}
	for (var k = 0; k < shopChoices.choiceDescTexts.length; k++) {
		shopChoices.choiceDescTexts[k].destroy();
	}
	shopChoices = null;
	isShopOpen = false;
	// Continue to next room
	continueToNextRoom();
}
function continueToNextRoom() {
	// Clear current room
	if (currentRoom) {
		currentRoom.destroy();
	}
	// Clear boss reference and hide boss health bar
	currentBoss = null;
	if (bossHealthBarBg) {
		bossHealthBarBg.alpha = 0;
		bossHealthBar.alpha = 0;
		bossNameText.alpha = 0;
	}
	// Clear bullets and pickups
	for (var i = 0; i < playerBullets.length; i++) {
		playerBullets[i].destroy();
	}
	for (var j = 0; j < enemyBullets.length; j++) {
		enemyBullets[j].destroy();
	}
	for (var k = 0; k < pickups.length; k++) {
		pickups[k].destroy();
	}
	for (var l = 0; l < shotgunAmmoPickups.length; l++) {
		shotgunAmmoPickups[l].destroy();
	}
	playerBullets = [];
	enemyBullets = [];
	pickups = [];
	shotgunAmmoPickups = [];
	// Create new room
	roomLevel++;
	currentRoom = new Room(roomLevel);
	currentRoom.generateRoom();
	game.addChild(currentRoom);
	// Reset player position
	player.x = 1024;
	player.y = 2400;
	game.addChild(player);
	// Regenerate HP when entering new room
	player.heal(1);
	updateUI();
}

===================================================================
--- original.js
+++ change.js
@@ -1,8 +1,9 @@
 /**** 
 * Plugins
 ****/ 
 var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
 
 /**** 
 * Classes
 ****/ 
@@ -91,8 +92,9 @@
 		if (self.health <= 0) {
 			self.active = false;
 			LK.setScore(LK.getScore() + 15); // Higher score for blue enemies
 			gainXP(75); // More XP for blue enemies
+			gainCash(1); // Gain $1 per enemy killed
 			LK.getSound('enemyHit').play();
 			// Reduce slowdown cooldown by 5 seconds (300 ticks)
 			if (slowdownCooldown > 0) {
 				slowdownCooldown = Math.max(0, slowdownCooldown - 300);
@@ -183,8 +185,9 @@
 		if (self.health <= 0) {
 			self.active = false;
 			LK.setScore(LK.getScore() + 100);
 			gainXP(200);
+			gainCash(1); // Gain $1 per enemy killed
 			LK.getSound('enemyHit').play();
 			// Hide boss health bar
 			if (bossHealthBarBg) {
 				bossHealthBarBg.alpha = 0;
@@ -226,8 +229,14 @@
 				self.maxRange = 1200 * rangeBonus; // Very long range
 				self.pierceCount = 0; // Track how many enemies pierced
 				self.maxPierce = 3 + piercingBonus; // Can pierce through 3 + bonus enemies
 				break;
+			case 'rpg':
+				self.speed = 8;
+				self.damage = 40; // High damage
+				self.maxRange = 600;
+				self.isExplosive = true;
+				break;
 		}
 	} else {
 		self.speed = 8;
 		self.damage = 1;
@@ -337,8 +346,9 @@
 		if (self.health <= 0) {
 			self.active = false;
 			LK.setScore(LK.getScore() + 10);
 			gainXP(50); // Gain 50 XP per enemy killed
+			gainCash(1); // Gain $1 per enemy killed
 			LK.getSound('enemyHit').play();
 			// Reduce slowdown cooldown by 5 seconds (300 ticks)
 			if (slowdownCooldown > 0) {
 				slowdownCooldown = Math.max(0, slowdownCooldown - 300);
@@ -441,8 +451,9 @@
 	self.currentMelee = 'sword';
 	// Ammo system
 	self.shotgunAmmo = 5;
 	self.sniperAmmo = 5;
+	self.rpgAmmo = 0;
 	// Gun properties
 	self.gunStats = {
 		pistol: {
 			cooldown: 12,
@@ -460,8 +471,13 @@
 		sniper: {
 			cooldown: 60,
 			spread: 0,
 			ammo: 5
+		},
+		rpg: {
+			cooldown: 120,
+			spread: 0,
+			ammo: 1
 		}
 	};
 	// Melee properties
 	self.meleeStats = {
@@ -486,8 +502,13 @@
 			// Remove sniper from hotbar when out of ammo
 			removeWeaponFromHotbar('sniper');
 			return;
 		}
+		if (self.currentGun === 'rpg' && self.rpgAmmo <= 0) {
+			// Remove RPG from hotbar when out of ammo
+			removeWeaponFromHotbar('rpg');
+			return;
+		}
 		var gunStat = self.gunStats[self.currentGun];
 		var baseAngle = Math.atan2(targetY - self.y, targetX - self.x);
 		if (self.currentGun === 'shotgun') {
 			// Shotgun fires multiple pellets and consumes ammo
@@ -512,8 +533,19 @@
 			bullet.startX = self.x;
 			bullet.startY = self.y;
 			playerBullets.push(bullet);
 			game.addChild(bullet);
+		} else if (self.currentGun === 'rpg') {
+			// RPG fires explosive rocket and consumes ammo
+			self.rpgAmmo--;
+			var bullet = new Bullet(true, self.currentGun);
+			bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
+			bullet.x = self.x;
+			bullet.y = self.y;
+			bullet.startX = self.x;
+			bullet.startY = self.y;
+			playerBullets.push(bullet);
+			game.addChild(bullet);
 		} else {
 			var bullet = new Bullet(true, self.currentGun);
 			bullet.direction = baseAngle + (Math.random() - 0.5) * gunStat.spread;
 			bullet.x = self.x;
@@ -602,8 +634,38 @@
 		}
 	};
 	return self;
 });
+var RPG = Container.expand(function (x, y) {
+	var self = Container.call(this);
+	self.x = x;
+	self.y = y;
+	self.active = true;
+	self.bobOffset = Math.random() * Math.PI * 2;
+	self.startY = y;
+	var rpgGraphics = self.attachAsset('rifle', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		tint: 0xe74c3c,
+		scaleX: 1.5,
+		scaleY: 1.5
+	});
+	self.update = function () {
+		if (!self.active) return;
+		// Bobbing animation
+		self.y = self.startY + Math.sin(LK.ticks * 0.1 + self.bobOffset) * 5;
+		// Check pickup collision with player
+		if (self.intersects(player)) {
+			self.active = false;
+			if (addWeaponToHotbar('rpg', 'gun')) {
+				LK.getSound('pickup').play();
+				LK.setScore(LK.getScore() + 5);
+			}
+			self.destroy();
+		}
+	};
+	return self;
+});
 var Room = Container.expand(function (level) {
 	var self = Container.call(this);
 	self.level = level || 1;
 	self.enemies = [];
@@ -788,8 +850,13 @@
 var levelUpChoices = null;
 var damageBonus = 0;
 var rangeBonus = 1;
 var piercingBonus = 0;
+// Cash System
+var playerCash = storage.playerCash || 0;
+var isShopOpen = false;
+var shopChoices = null;
+var hasUpgradePistol = storage.hasUpgradePistol || false;
 // UI Elements
 var scoreText = new Text2('Score: 0', {
 	size: 40,
 	fill: '#ffffff'
@@ -834,8 +901,17 @@
 var hotbar = new Container();
 hotbar.x = 1024; // Center of screen
 hotbar.y = 2600; // Bottom of screen
 game.addChild(hotbar);
+// Cash counter to the left of hotbar
+var cashText = new Text2('$0', {
+	size: 40,
+	fill: '#2ecc71'
+});
+cashText.anchor.set(1, 0.5);
+cashText.x = -300; // Position to the left of hotbar
+cashText.y = -80;
+hotbar.addChild(cashText);
 // Ammo counter to the left of hotbar
 var ammoText = new Text2('Shotgun: 5', {
 	size: 32,
 	fill: '#f39c12'
@@ -1177,8 +1253,10 @@
 	// Update XP bar display
 	var xpPercent = playerXP / xpToNextLevel;
 	xpBar.width = 400 * xpPercent;
 	levelText.setText('Level ' + playerLevel);
+	// Update cash display
+	cashText.setText('$' + playerCash);
 }
 function updateBossHealthBar() {
 	if (currentBoss && currentBoss.active) {
 		var healthPercent = currentBoss.health / currentBoss.maxHealth;
@@ -1190,8 +1268,12 @@
 	if (playerXP >= xpToNextLevel && !isLevelingUp) {
 		levelUp();
 	}
 }
+function gainCash(amount) {
+	playerCash += amount;
+	storage.playerCash = playerCash;
+}
 function levelUp() {
 	isLevelingUp = true;
 	playerLevel++;
 	playerXP -= xpToNextLevel;
@@ -1370,8 +1452,13 @@
 	pickups.push(shotgunPickup);
 	game.addChild(shotgunPickup);
 }
 function generateNewRoom() {
+	// Check if shop should appear (every 4 waves)
+	if (roomLevel > 0 && roomLevel % 4 === 0 && !isShopOpen) {
+		showShop();
+		return;
+	}
 	// Clear current room
 	if (currentRoom) {
 		currentRoom.destroy();
 	}
@@ -1657,9 +1744,9 @@
 	}
 };
 // Main game loop
 game.update = function () {
-	if (!gameStarted || !player || !currentRoom || isLevelingUp) return;
+	if (!gameStarted || !player || !currentRoom || isLevelingUp || isShopOpen) return;
 	// Update player
 	player.update();
 	// Update player bullets
 	for (var i = playerBullets.length - 1; i >= 0; i--) {
@@ -1673,19 +1760,43 @@
 		// Check collision with enemies
 		for (var j = 0; j < currentRoom.enemies.length; j++) {
 			var enemy = currentRoom.enemies[j];
 			if (enemy.active && bullet.intersects(enemy)) {
-				enemy.takeDamage(bullet.damage);
-				// Handle sniper piercing
-				if (bullet.gunType === 'sniper' && bullet.pierceCount < bullet.maxPierce) {
-					bullet.pierceCount++;
-					// Continue through enemy, don't destroy bullet
-				} else {
+				// Handle RPG explosion
+				if (bullet.gunType === 'rpg' && bullet.isExplosive) {
+					// Explosion damages all enemies in range
+					for (var exp = 0; exp < currentRoom.enemies.length; exp++) {
+						var expEnemy = currentRoom.enemies[exp];
+						if (expEnemy.active) {
+							var expDx = expEnemy.x - bullet.x;
+							var expDy = expEnemy.y - bullet.y;
+							var expDistance = Math.sqrt(expDx * expDx + expDy * expDy);
+							if (expDistance < 200) {
+								// Explosion radius
+								var explosionDamage = expEnemy.isBoss ? 30 : 40;
+								expEnemy.takeDamage(explosionDamage);
+							}
+						}
+					}
+					// Visual explosion effect
+					LK.effects.flashScreen(0xff6b35, 500);
 					bullet.active = false;
 					bullet.destroy();
 					playerBullets.splice(i, 1);
+					break;
+				} else {
+					enemy.takeDamage(bullet.damage);
+					// Handle sniper piercing
+					if (bullet.gunType === 'sniper' && bullet.pierceCount < bullet.maxPierce) {
+						bullet.pierceCount++;
+						// Continue through enemy, don't destroy bullet
+					} else {
+						bullet.active = false;
+						bullet.destroy();
+						playerBullets.splice(i, 1);
+					}
+					break;
 				}
-				break;
 			}
 		}
 	}
 	// Update enemy bullets
@@ -1869,5 +1980,240 @@
 	// Update UI periodically
 	if (LK.ticks % 30 === 0) {
 		updateUI();
 	}
-};
\ No newline at end of file
+};
+function showShop() {
+	isShopOpen = true;
+	// Create overlay background
+	var overlay = game.attachAsset('wall', {
+		width: 2048,
+		height: 2732,
+		anchorX: 0,
+		anchorY: 0,
+		x: 0,
+		y: 0,
+		alpha: 0.9,
+		tint: 0x2c3e50
+	});
+	// Title text
+	var titleText = new Text2('SHOPKEEPER', {
+		size: 60,
+		fill: '#f39c12'
+	});
+	titleText.anchor.set(0.5, 0.5);
+	titleText.x = 1024;
+	titleText.y = 600;
+	game.addChild(titleText);
+	// Available shop items
+	var shopItems = [];
+	// Always include upgrade pistol if not owned
+	if (!hasUpgradePistol) {
+		shopItems.push({
+			id: 'upgradePistol',
+			name: 'Upgraded Pistol',
+			price: 15,
+			description: 'Better damage\nand fire rate'
+		});
+	}
+	// Add random items
+	var randomItems = [{
+		id: 'health',
+		name: '+5 Max HP',
+		price: 10,
+		description: 'Increase health'
+	}, {
+		id: 'damage',
+		name: '+3 Damage',
+		price: 12,
+		description: 'More damage'
+	}, {
+		id: 'rpg',
+		name: 'RPG Launcher',
+		price: 30,
+		description: '40 damage explosion\n30 on bosses'
+	}];
+	// Add 2-3 random items
+	var itemsToAdd = Math.min(3 - shopItems.length, randomItems.length);
+	for (var i = 0; i < itemsToAdd; i++) {
+		if (randomItems.length > 0) {
+			var randomIndex = Math.floor(Math.random() * randomItems.length);
+			shopItems.push(randomItems[randomIndex]);
+			randomItems.splice(randomIndex, 1);
+		}
+	}
+	// Create shop item buttons
+	var choiceY = 1366;
+	var choiceSpacing = 300;
+	var choices = [];
+	var choiceTexts = [];
+	var choiceDescTexts = [];
+	for (var j = 0; j < shopItems.length; j++) {
+		var item = shopItems[j];
+		var xPos = 1024 + (j - Math.floor(shopItems.length / 2)) * choiceSpacing;
+		var choice = game.attachAsset('wall', {
+			width: 250,
+			height: 150,
+			anchorX: 0.5,
+			anchorY: 0.5,
+			x: xPos,
+			y: choiceY,
+			tint: playerCash >= item.price ? 0x27ae60 : 0xe74c3c
+		});
+		var nameText = new Text2(item.name, {
+			size: 24,
+			fill: '#ffffff'
+		});
+		nameText.anchor.set(0.5, 0.5);
+		nameText.x = xPos;
+		nameText.y = choiceY - 30;
+		game.addChild(nameText);
+		var priceText = new Text2('$' + item.price, {
+			size: 32,
+			fill: '#f39c12'
+		});
+		priceText.anchor.set(0.5, 0.5);
+		priceText.x = xPos;
+		priceText.y = choiceY + 20;
+		game.addChild(priceText);
+		var descText = new Text2(item.description, {
+			size: 18,
+			fill: '#ecf0f1'
+		});
+		descText.anchor.set(0.5, 0.5);
+		descText.x = xPos;
+		descText.y = choiceY + 50;
+		game.addChild(descText);
+		choice.shopItem = item;
+		choice.down = function () {
+			buyItem(this.shopItem);
+		};
+		choices.push(choice);
+		choiceTexts.push(nameText);
+		choiceTexts.push(priceText);
+		choiceDescTexts.push(descText);
+	}
+	// Continue button
+	var continueButton = game.attachAsset('wall', {
+		width: 200,
+		height: 80,
+		anchorX: 0.5,
+		anchorY: 0.5,
+		x: 1024,
+		y: 2000,
+		tint: 0x3498db
+	});
+	var continueText = new Text2('CONTINUE', {
+		size: 36,
+		fill: '#ffffff'
+	});
+	continueText.anchor.set(0.5, 0.5);
+	continueText.x = 1024;
+	continueText.y = 2000;
+	game.addChild(continueText);
+	continueButton.down = function () {
+		closeShop();
+	};
+	// Store references for cleanup
+	shopChoices = {
+		overlay: overlay,
+		titleText: titleText,
+		choices: choices,
+		choiceTexts: choiceTexts,
+		choiceDescTexts: choiceDescTexts,
+		continueButton: continueButton,
+		continueText: continueText
+	};
+}
+function buyItem(item) {
+	if (playerCash < item.price) return;
+	playerCash -= item.price;
+	storage.playerCash = playerCash;
+	switch (item.id) {
+		case 'upgradePistol':
+			hasUpgradePistol = true;
+			storage.hasUpgradePistol = true;
+			// Upgrade pistol stats
+			player.gunStats.pistol.cooldown = 8;
+			player.gunStats.pistol.damage = 8;
+			break;
+		case 'health':
+			player.maxHealth += 5;
+			player.health += 5;
+			break;
+		case 'damage':
+			damageBonus += 3;
+			break;
+		case 'rpg':
+			player.rpgAmmo = 1;
+			if (!addWeaponToHotbar('rpg', 'gun')) {
+				// If hotbar full, give ammo anyway
+				player.rpgAmmo = 1;
+			}
+			break;
+	}
+	updateUI();
+	closeShop();
+}
+function closeShop() {
+	if (!shopChoices) return;
+	// Clean up shop UI
+	shopChoices.overlay.destroy();
+	shopChoices.titleText.destroy();
+	shopChoices.continueButton.destroy();
+	shopChoices.continueText.destroy();
+	for (var i = 0; i < shopChoices.choices.length; i++) {
+		shopChoices.choices[i].destroy();
+	}
+	for (var j = 0; j < shopChoices.choiceTexts.length; j++) {
+		shopChoices.choiceTexts[j].destroy();
+	}
+	for (var k = 0; k < shopChoices.choiceDescTexts.length; k++) {
+		shopChoices.choiceDescTexts[k].destroy();
+	}
+	shopChoices = null;
+	isShopOpen = false;
+	// Continue to next room
+	continueToNextRoom();
+}
+function continueToNextRoom() {
+	// Clear current room
+	if (currentRoom) {
+		currentRoom.destroy();
+	}
+	// Clear boss reference and hide boss health bar
+	currentBoss = null;
+	if (bossHealthBarBg) {
+		bossHealthBarBg.alpha = 0;
+		bossHealthBar.alpha = 0;
+		bossNameText.alpha = 0;
+	}
+	// Clear bullets and pickups
+	for (var i = 0; i < playerBullets.length; i++) {
+		playerBullets[i].destroy();
+	}
+	for (var j = 0; j < enemyBullets.length; j++) {
+		enemyBullets[j].destroy();
+	}
+	for (var k = 0; k < pickups.length; k++) {
+		pickups[k].destroy();
+	}
+	for (var l = 0; l < shotgunAmmoPickups.length; l++) {
+		shotgunAmmoPickups[l].destroy();
+	}
+	playerBullets = [];
+	enemyBullets = [];
+	pickups = [];
+	shotgunAmmoPickups = [];
+	// Create new room
+	roomLevel++;
+	currentRoom = new Room(roomLevel);
+	currentRoom.generateRoom();
+	game.addChild(currentRoom);
+	// Reset player position
+	player.x = 1024;
+	player.y = 2400;
+	game.addChild(player);
+	// Regenerate HP when entering new room
+	player.heal(1);
+	updateUI();
+}
\ No newline at end of file