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

/**** 
* Classes
****/ 
var AcidTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('acidTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 140;
	self.fireRate = 45;
	self.fireTimer = 0;
	self.health = 100;
	self.maxHealth = 100;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.acidAttack();
		}
	};
	self.acidAttack = function () {
		LK.getSound('laser').play();
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.range) {
				// Apply acid effect (doesn't remove freezing)
				zombies[i].acidDuration = 240; // 4 seconds of acid
				zombies[i].acidDamage = 2; // Smaller damage per tick
			}
		}
		var acidEffect = self.attachAsset('acidEffect', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		acidEffect.width = self.range * 2;
		acidEffect.height = self.range * 2;
		acidEffect.alpha = 0.6;
		tween(acidEffect, {
			alpha: 0,
			scaleX: 1.4,
			scaleY: 1.4
		}, {
			duration: 600,
			onFinish: function onFinish() {
				acidEffect.destroy();
			}
		});
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var AutoTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('autoTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 8;
	self.range = 400;
	self.fireRate = 40;
	self.fireTimer = 0;
	self.health = 140;
	self.maxHealth = 140;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			// Aim turret at target
			var dx = target.x - self.x;
			var dy = target.y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			self.shootHomingBullet();
		} else {
			// No target in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootHomingBullet = function () {
		LK.getSound('laser').play();
		var bullet = new HomingBullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.damage = self.damage;
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var BossZombie = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('bossZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.3;
	self.health = 500;
	self.damage = 25;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		// Handle burning effect
		if (self.burnDuration > 0) {
			self.burnDuration--;
			if (self.burnDuration % 10 === 0) {
				self.takeDamage(self.burnDamage || 3);
			}
		}
		// Handle acid effect
		if (self.acidDuration > 0) {
			self.acidDuration--;
			if (self.acidDuration % 15 === 0) {
				self.takeDamage(self.acidDamage || 2);
			}
		}
		if (self.frozen > 0) {
			self.frozen--;
			bossGraphics.tint = 0x87CEEB;
			self.speed = 0.15;
		} else if (self.burnDuration > 0) {
			bossGraphics.tint = 0xFF4500;
			self.speed = 0.3;
		} else if (self.acidDuration > 0) {
			bossGraphics.tint = 0x32CD32;
			self.speed = 0.3;
		} else {
			bossGraphics.tint = 0xFFFFFF;
			self.speed = 0.3;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 60) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 45) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.x += self.speed;
			if (self.x > 2048) {
				lives -= 5;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		// Prioritize houses first
		for (var i = 0; i < houses.length; i++) {
			// Create a virtual target point spread across the house width
			var houseLeft = houses[i].x - 1024; // Left edge of house
			var houseRight = houses[i].x + 1024; // Right edge of house
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x)); // Clamp zombie x to house width
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
		// Skip solar collectors and towers - they are not targeted by boss zombies
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 100);
			LK.getSound('zombieDeath').play();
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 120;
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.damage = 25;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist > 5) {
			self.x += dx / dist * self.speed;
			self.y += dy / dist * self.speed;
		} else {
			// Hit target area, check for zombie collision
			for (var i = 0; i < zombies.length; i++) {
				var zdx = zombies[i].x - self.x;
				var zdy = zombies[i].y - self.y;
				var zdist = Math.sqrt(zdx * zdx + zdy * zdy);
				if (zdist < 30) {
					zombies[i].takeDamage(self.damage);
					self.destroy();
					return;
				}
			}
			self.destroy();
		}
	};
	return self;
});
var ClassicTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('classicTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 25;
	self.range = 250;
	self.fireRate = 45;
	self.fireTimer = 0;
	self.health = 120;
	self.maxHealth = 120;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			// Aim turret at target
			var dx = target.x - self.x;
			var dy = target.y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			self.shootBullet(target);
		} else {
			// No target in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootBullet = function (target) {
		LK.getSound('laser').play();
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.targetX = target.x;
		bullet.targetY = target.y;
		bullet.damage = self.damage;
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var CrowZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('crowZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1.8;
	self.health = 15;
	self.damage = 5;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.9;
		} else {
			zombieGraphics.tint = 0xFFFFFF;
			self.speed = 1.8;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 30) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 45) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		for (var i = 0; i < houses.length; i++) {
			var houseLeft = houses[i].x - 1024;
			var houseRight = houses[i].x + 1024;
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x));
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 5);
			LK.getSound('zombieDeath').play();
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 120;
	};
	return self;
});
var CrowsZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('crowsZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.7;
	self.health = 60;
	self.damage = 10;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.35;
		} else {
			zombieGraphics.tint = 0xFFFFFF;
			self.speed = 0.7;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 50) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 60) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		for (var i = 0; i < houses.length; i++) {
			var houseLeft = houses[i].x - 1024;
			var houseRight = houses[i].x + 1024;
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x));
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 15);
			LK.getSound('zombieDeath').play();
			// Spawn 3 crow zombies
			for (var i = 0; i < 3; i++) {
				var crow = new CrowZombie();
				crow.x = self.x + (Math.random() - 0.5) * 60;
				crow.y = self.y + (Math.random() - 0.5) * 60;
				zombies.push(crow);
				game.addChild(crow);
			}
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 180;
	};
	return self;
});
var DoubleBarrelTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('doubleBarrelTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 20;
	self.range = 280;
	self.fireRate = 35;
	self.fireTimer = 0;
	self.health = 140;
	self.maxHealth = 140;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var targets = [];
		// Find all zombies in range and sort by distance
		var zombiesInRange = [];
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				zombiesInRange.push({
					zombie: zombies[i],
					distance: dist
				});
			}
		}
		// Sort by distance and take closest 2
		zombiesInRange.sort(function (a, b) {
			return a.distance - b.distance;
		});
		for (var i = 0; i < Math.min(2, zombiesInRange.length); i++) {
			targets.push(zombiesInRange[i].zombie);
		}
		if (targets.length > 0) {
			// Aim at closest target
			var dx = targets[0].x - self.x;
			var dy = targets[0].y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			// Shoot two bullets
			for (var i = 0; i < targets.length; i++) {
				self.shootBullet(targets[i]);
			}
		} else {
			// No targets in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootBullet = function (target) {
		LK.getSound('laser').play();
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.targetX = target.x;
		bullet.targetY = target.y;
		bullet.damage = self.damage;
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var ExplosiveTower = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('explosiveTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 75;
	self.range = 280;
	self.explosionRange = 100;
	self.fireRate = 90;
	self.fireTimer = 0;
	self.health = 120;
	self.maxHealth = 120;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndExplode();
		}
	};
	self.findAndExplode = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			self.explode(target.x, target.y);
		}
	};
	self.explode = function (x, y) {
		LK.getSound('explode').play();
		var explosion = game.addChild(LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		explosion.x = x;
		explosion.y = y;
		explosion.alpha = 0.8;
		tween(explosion, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 300,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - x;
			var dy = zombies[i].y - y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.explosionRange) {
				zombies[i].takeDamage(self.damage);
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var FlameThrowerTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('flameThrowerTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 150;
	self.fireRate = 30;
	self.fireTimer = 0;
	self.health = 110;
	self.maxHealth = 110;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.flameAttack();
		}
	};
	self.flameAttack = function () {
		LK.getSound('flame').play();
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.range) {
				// Remove freezing effect if zombie is frozen
				if (zombies[i].frozen > 0) {
					zombies[i].frozen = 0;
				}
				// Apply burning effect
				zombies[i].burnDuration = 180; // 3 seconds of burning
				zombies[i].burnDamage = 3; // Damage per tick
			}
		}
		var flameEffect = self.attachAsset('fireEffect', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		flameEffect.width = self.range * 2;
		flameEffect.height = self.range * 2;
		flameEffect.alpha = 0.7;
		tween(flameEffect, {
			alpha: 0,
			scaleX: 1.3,
			scaleY: 1.3
		}, {
			duration: 400,
			onFinish: function onFinish() {
				flameEffect.destroy();
			}
		});
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var FreezeTower = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('freezeTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 150;
	self.fireRate = 120;
	self.fireTimer = 0;
	self.health = 100;
	self.maxHealth = 100;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.freezeArea();
		}
	};
	self.freezeArea = function () {
		LK.getSound('freeze').play();
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.range) {
				zombies[i].freeze();
			}
		}
		var freezeEffect = self.attachAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		freezeEffect.tint = 0x00BFFF;
		freezeEffect.alpha = 0.5;
		freezeEffect.width = self.range * 2;
		freezeEffect.height = self.range * 2;
		tween(freezeEffect, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 500,
			onFinish: function onFinish() {
				freezeEffect.destroy();
			}
		});
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var FrozenTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('frozenTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 200;
	self.fireRate = 90;
	self.fireTimer = 0;
	self.health = 120;
	self.maxHealth = 120;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.freezeArea();
		}
	};
	self.freezeArea = function () {
		LK.getSound('freeze').play();
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.range) {
				zombies[i].freeze();
			}
		}
		var freezeEffect = self.attachAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		freezeEffect.tint = 0x00FFFF;
		freezeEffect.alpha = 0.5;
		freezeEffect.width = self.range * 2;
		freezeEffect.height = self.range * 2;
		tween(freezeEffect, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 500,
			onFinish: function onFinish() {
				freezeEffect.destroy();
			}
		});
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var HomingBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('homingBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.damage = 8;
	self.target = null;
	self.turnSpeed = 0.15;
	self.update = function () {
		// Find closest target if we don't have one or target is destroyed
		if (!self.target || self.target.destroyed || self.target.health <= 0) {
			self.findTarget();
		}
		if (self.target) {
			// Move towards target with homing behavior
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 10) {
				// Normalize direction and move
				var dirX = dx / dist;
				var dirY = dy / dist;
				self.x += dirX * self.speed;
				self.y += dirY * self.speed;
				// Rotate bullet to face movement direction
				var angle = Math.atan2(dy, dx);
				bulletGraphics.rotation = angle;
			} else {
				// Hit target
				self.target.takeDamage(self.damage);
				self.destroy();
			}
		} else {
			// No target, move forward
			self.y += self.speed;
			if (self.y > 2732) {
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = 400; // Max homing range
		self.target = null;
		for (var i = 0; i < zombies.length; i++) {
			if (zombies[i].destroyed || zombies[i].health <= 0) continue;
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = zombies[i];
			}
		}
	};
	return self;
});
var House = Container.expand(function () {
	var self = Container.call(this);
	var houseGraphics = self.attachAsset('house', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Scale house to span the width of the screen
	houseGraphics.width = 2048; // Full screen width
	houseGraphics.height = 100; // Keep original height
	self.health = 500; // Increased health since it's the only house
	self.maxHealth = 500;
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			lives -= 10; // Lose more lives when the main house is destroyed
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var LaserTower = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('laserTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 30;
	self.range = 280;
	self.fireRate = 30;
	self.fireTimer = 0;
	self.health = 150;
	self.maxHealth = 150;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			self.shootLaser(target);
		}
	};
	self.shootLaser = function (target) {
		LK.getSound('laser').play();
		var laser = self.attachAsset('laserBeam', {
			anchorX: 0.5,
			anchorY: 1
		});
		var dx = target.x - self.x;
		var dy = target.y - self.y;
		var angle = Math.atan2(dy, dx) + Math.PI / 2;
		laser.rotation = angle;
		var dist = Math.sqrt(dx * dx + dy * dy);
		laser.height = dist;
		tween(laser, {
			alpha: 0
		}, {
			duration: 200,
			onFinish: function onFinish() {
				laser.destroy();
			}
		});
		target.takeDamage(self.damage);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var MinigunTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('minigunTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 12;
	self.range = 220;
	self.fireRate = 10; // Very fast firing
	self.fireTimer = 0;
	self.health = 130;
	self.maxHealth = 130;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			// Aim turret at target
			var dx = target.x - self.x;
			var dy = target.y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			self.shootBullet(target);
		} else {
			// No target in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootBullet = function (target) {
		LK.getSound('minigun').play();
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.targetX = target.x;
		bullet.targetY = target.y;
		bullet.damage = self.damage;
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var Rocket = Container.expand(function () {
	var self = Container.call(this);
	var rocketGraphics = self.attachAsset('rocket', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.damage = 80;
	self.explosionRange = 120;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist > 8) {
			self.x += dx / dist * self.speed;
			self.y += dy / dist * self.speed;
			// Rotate rocket to face movement direction
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			rocketGraphics.rotation = angle;
		} else {
			// Explode at target location
			self.explode();
		}
	};
	self.explode = function () {
		LK.getSound('explode').play();
		var explosion = game.addChild(LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		explosion.x = self.x;
		explosion.y = self.y;
		explosion.alpha = 0.9;
		explosion.width = self.explosionRange * 2;
		explosion.height = self.explosionRange * 2;
		tween(explosion, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 400,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Damage all zombies in explosion range
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < self.explosionRange) {
				zombies[i].takeDamage(self.damage);
			}
		}
		self.destroy();
	};
	return self;
});
var RocketTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('rocketTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 80;
	self.range = 300;
	self.explosionRange = 120;
	self.fireRate = 120; // Slow but powerful
	self.fireTimer = 0;
	self.health = 150;
	self.maxHealth = 150;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var target = null;
		var minDist = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				if (dist < minDist) {
					minDist = dist;
					target = zombies[i];
				}
			}
		}
		if (target) {
			// Aim turret at target
			var dx = target.x - self.x;
			var dy = target.y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			self.shootRocket(target);
		} else {
			// No target in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootRocket = function (target) {
		LK.getSound('rocket').play();
		var rocket = new Rocket();
		rocket.x = self.x;
		rocket.y = self.y;
		rocket.targetX = target.x;
		rocket.targetY = target.y;
		rocket.damage = self.damage;
		rocket.explosionRange = self.explosionRange;
		game.addChild(rocket);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var RunnerZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('runnerZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1.4;
	self.health = 30;
	self.damage = 8;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.7;
		} else {
			zombieGraphics.tint = 0xFFFFFF;
			self.speed = 1.4;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 50) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 60) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		for (var i = 0; i < houses.length; i++) {
			var houseLeft = houses[i].x - 1024;
			var houseRight = houses[i].x + 1024;
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x));
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 8);
			LK.getSound('zombieDeath').play();
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 180;
	};
	return self;
});
var SolarCollector = Container.expand(function () {
	var self = Container.call(this);
	var collector = self.attachAsset('solarCollector', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.energyRate = 1;
	self.health = 100;
	self.maxHealth = 100;
	self.isDaytime = true;
	self.energyTimer = 0;
	self.sunCount = 0; // Track how many suns have been generated
	self.maxSuns = 10; // Maximum of 10 suns per collector
	self.energyGenerationTime = Math.floor(Math.random() * 600) + 900; // Random 15-25 seconds (900-1500 frames at 60fps)
	self.update = function () {
		// Only generate energy if we haven't reached the sun limit
		if (self.sunCount < self.maxSuns) {
			self.energyTimer++;
			if (self.energyTimer >= self.energyGenerationTime) {
				self.energyTimer = 0;
				self.sunCount++; // Increment sun count
				// Set new random interval for next generation (15-25 seconds)
				self.energyGenerationTime = Math.floor(Math.random() * 600) + 900; // Random 15-25 seconds
				var energyGain = 20;
				energy += energyGain;
				LK.getSound('collect').play();
				var energyText = new Text2('+' + energyGain, {
					size: 30,
					fill: 0xFFD700
				});
				energyText.anchor.set(0.5, 0.5);
				energyText.x = 0;
				energyText.y = -40;
				self.addChild(energyText);
				tween(energyText, {
					y: -80,
					alpha: 0
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						energyText.destroy();
					}
				});
				// Visual indication when collector is exhausted
				if (self.sunCount >= self.maxSuns) {
					collector.tint = 0x666666; // Dim the collector when exhausted
				}
			}
		}
		collector.tint = self.isDaytime && self.sunCount < self.maxSuns ? 0xFFD700 : 0xB8860B;
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var ToughZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('toughZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.4;
	self.health = 120;
	self.damage = 15;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.2;
		} else {
			zombieGraphics.tint = 0xFFFFFF;
			self.speed = 0.4;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 50) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 60) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		for (var i = 0; i < houses.length; i++) {
			var houseLeft = houses[i].x - 1024;
			var houseRight = houses[i].x + 1024;
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x));
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 15);
			LK.getSound('zombieDeath').play();
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 180;
	};
	return self;
});
var TripleBarrelTurret = Container.expand(function () {
	var self = Container.call(this);
	var tower = self.attachAsset('tripleBarrelTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 15;
	self.range = 300;
	self.fireRate = 30;
	self.fireTimer = 0;
	self.health = 160;
	self.maxHealth = 160;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			self.findAndShoot();
		}
	};
	self.findAndShoot = function () {
		var targets = [];
		// Find all zombies in range and sort by distance
		var zombiesInRange = [];
		for (var i = 0; i < zombies.length; i++) {
			var dx = zombies[i].x - self.x;
			var dy = zombies[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist <= self.range) {
				zombiesInRange.push({
					zombie: zombies[i],
					distance: dist
				});
			}
		}
		// Sort by distance and take closest 3
		zombiesInRange.sort(function (a, b) {
			return a.distance - b.distance;
		});
		for (var i = 0; i < Math.min(3, zombiesInRange.length); i++) {
			targets.push(zombiesInRange[i].zombie);
		}
		if (targets.length > 0) {
			// Aim at closest target
			var dx = targets[0].x - self.x;
			var dy = targets[0].y - self.y;
			var angle = Math.atan2(dy, dx) + Math.PI / 2;
			self.children[0].rotation = angle;
			// Shoot three bullets
			for (var i = 0; i < targets.length; i++) {
				self.shootBullet(targets[i]);
			}
		} else {
			// No targets in range, return to default direction (facing up)
			self.children[0].rotation = 0;
		}
	};
	self.shootBullet = function (target) {
		LK.getSound('laser').play();
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.targetX = target.x;
		bullet.targetY = target.y;
		bullet.damage = self.damage;
		game.addChild(bullet);
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFF0000, 300);
		return false;
	};
	return self;
});
var UmbrellaZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('umbrellaZombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.6;
	self.health = 50;
	self.damage = 10;
	self.umbrellaHealth = 40;
	self.hasUmbrella = true;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.3;
		} else {
			zombieGraphics.tint = self.hasUmbrella ? 0x9370DB : 0xFFFFFF;
			self.speed = 0.6;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 50) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 60) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		for (var i = 0; i < houses.length; i++) {
			var houseLeft = houses[i].x - 1024;
			var houseRight = houses[i].x + 1024;
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x));
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
	};
	self.takeDamage = function (damage) {
		if (self.hasUmbrella) {
			self.umbrellaHealth -= damage;
			if (self.umbrellaHealth <= 0) {
				self.hasUmbrella = false;
				LK.effects.flashObject(self, 0xFF0000, 300);
			} else {
				LK.effects.flashObject(self, 0x9370DB, 200);
			}
			return false;
		} else {
			self.health -= damage;
			if (self.health <= 0) {
				LK.setScore(LK.getScore() + 12);
				LK.getSound('zombieDeath').play();
				self.destroy();
				return true;
			}
			LK.effects.flashObject(self, 0xFFFFFF, 200);
			return false;
		}
	};
	self.freeze = function () {
		self.frozen = 180;
	};
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.7;
	self.health = 50;
	self.damage = 10;
	self.target = null;
	self.attackTimer = 0;
	self.frozen = 0;
	self.update = function () {
		// Handle burning effect
		if (self.burnDuration > 0) {
			self.burnDuration--;
			if (self.burnDuration % 10 === 0) {
				// Damage every 10 frames
				self.takeDamage(self.burnDamage || 3);
			}
		}
		// Handle acid effect
		if (self.acidDuration > 0) {
			self.acidDuration--;
			if (self.acidDuration % 15 === 0) {
				// Damage every 15 frames
				self.takeDamage(self.acidDamage || 2);
			}
		}
		if (self.frozen > 0) {
			self.frozen--;
			zombieGraphics.tint = 0x87CEEB;
			self.speed = 0.3;
		} else if (self.burnDuration > 0) {
			zombieGraphics.tint = 0xFF4500; // Orange tint for burning
			self.speed = 0.7;
		} else if (self.acidDuration > 0) {
			zombieGraphics.tint = 0x32CD32; // Green tint for acid
			self.speed = 0.7;
		} else {
			zombieGraphics.tint = 0xFFFFFF;
			self.speed = 0.7;
		}
		if (!self.target || self.target.destroyed) {
			self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > 50) {
				self.x += dx / dist * self.speed;
				self.y += dy / dist * self.speed;
			} else {
				self.attackTimer++;
				if (self.attackTimer >= 60) {
					self.attackTimer = 0;
					if (self.target.takeDamage) {
						if (self.target.takeDamage(self.damage)) {
							self.target = null;
						}
					}
				}
			}
		} else {
			// Move towards bottom of screen when no target
			self.y += self.speed;
			if (self.y > 2732) {
				lives--;
				self.destroy();
			}
		}
	};
	self.findTarget = function () {
		var minDist = Infinity;
		self.target = null;
		// Prioritize houses first
		for (var i = 0; i < houses.length; i++) {
			// Create a virtual target point spread across the house width
			var houseLeft = houses[i].x - 1024; // Left edge of house
			var houseRight = houses[i].x + 1024; // Right edge of house
			var targetX = Math.max(houseLeft, Math.min(houseRight, self.x)); // Clamp zombie x to house width
			var dx = targetX - self.x;
			var dy = houses[i].y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				self.target = {
					x: targetX,
					y: houses[i].y,
					takeDamage: houses[i].takeDamage.bind(houses[i]),
					destroyed: houses[i].destroyed
				};
			}
		}
		// Skip solar collectors and towers - they are not targeted by zombies
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			LK.setScore(LK.getScore() + 10);
			LK.getSound('zombieDeath').play();
			self.destroy();
			return true;
		}
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		return false;
	};
	self.freeze = function () {
		self.frozen = 180;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var energy = 100;
var wave = 0;
var lives = 20;
var isDaytime = true;
var dayTimer = 0;
var waveTimer = 0;
var zombieSpawnTimer = 0;
var zombiesPerWave = 5;
var zombiesToSpawn = 0;
var bossProgress = 0;
var bossProgressMax = 1000; // Will be 300 seconds at 60fps with new increment rate
var currentStage = 1;
var bossActive = false;
var difficultyMultiplier = 1;
var easyPeriodTimer = 0;
var easyPeriodDuration = 2100; // 35 seconds at 60fps
var isEasyPeriod = true;
var gameTimer = 0; // Track total game time in frames (60fps)
var specialZombiesUnlocked = false; // Track if special zombies are unlocked
var currentPage = 0; // Current turret page (0 = basic turrets, 1 = special turrets, 2 = advanced turrets)
var maxPages = 2; // Total number of pages (0, 1, 2)
var solarCollectors = [];
var towers = [];
var zombies = [];
var houses = [];
var gridCells = [];
var selectedTower = null;
var placementMode = false;
var placementCost = 0;
var dragging = false;
var dragTurret = null;
var GRID_SIZE = 120;
var GRID_COLS = Math.floor(2048 / GRID_SIZE);
var GRID_ROWS = Math.floor(2200 / GRID_SIZE); // Extend to house area boundary
var energyText = new Text2('Energy: ' + energy, {
	size: 60,
	fill: 0xFFD700
});
energyText.anchor.set(0.5, 0);
LK.gui.top.addChild(energyText);
var waveText = new Text2('Wave: ' + wave, {
	size: 50,
	fill: 0xFFFFFF
});
waveText.anchor.set(0, 0);
waveText.x = -900;
waveText.y = 100;
LK.gui.top.addChild(waveText);
var livesText = new Text2('Lives: ' + lives, {
	size: 50,
	fill: 0xFF0000
});
livesText.anchor.set(1, 0);
livesText.x = 900;
livesText.y = 100;
LK.gui.top.addChild(livesText);
var dayText = new Text2('Day', {
	size: 40,
	fill: 0xFFD700
});
dayText.anchor.set(0.5, 0);
dayText.y = 80;
LK.gui.top.addChild(dayText);
var progressBarBg = LK.getAsset('progressBarBg', {
	anchorX: 0.5,
	anchorY: 0.5
});
progressBarBg.x = 0;
progressBarBg.y = 150;
LK.gui.top.addChild(progressBarBg);
var progressBarFill = LK.getAsset('progressBarFill', {
	anchorX: 0,
	anchorY: 0.5
});
progressBarFill.x = -200;
progressBarFill.y = 150;
progressBarFill.width = 0;
LK.gui.top.addChild(progressBarFill);
var progressText = new Text2('Boss Progress', {
	size: 30,
	fill: 0xFFFFFF
});
progressText.anchor.set(0.5, 0.5);
progressText.x = 0;
progressText.y = 180;
LK.gui.top.addChild(progressText);
var stageText = new Text2('Stage: 1', {
	size: 35,
	fill: 0xFFD700
});
stageText.anchor.set(0, 0);
stageText.x = -900;
stageText.y = 150;
LK.gui.top.addChild(stageText);
var solarButton = new Container();
var solarButtonBg = solarButton.attachAsset('solarCollector', {
	anchorX: 0.5,
	anchorY: 0.5
});
solarButtonBg.width = 100;
solarButtonBg.height = 100;
var solarButtonText = new Text2('Solar: 25', {
	size: 25,
	fill: 0xFFD700
});
solarButtonText.anchor.set(0.5, 0.5);
solarButtonText.y = -60;
solarButton.addChild(solarButtonText);
solarButton.x = -300;
LK.gui.bottom.addChild(solarButton);
var classicButton = new Container();
var classicButtonBg = classicButton.attachAsset('classicTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
classicButtonBg.width = 100;
classicButtonBg.height = 100;
var classicButtonText = new Text2('Solar: 50', {
	size: 25,
	fill: 0xFFD700
});
classicButtonText.anchor.set(0.5, 0.5);
classicButtonText.y = -60;
classicButton.addChild(classicButtonText);
classicButton.x = -100;
LK.gui.bottom.addChild(classicButton);
var doubleButton = new Container();
var doubleButtonBg = doubleButton.attachAsset('doubleBarrelTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
doubleButtonBg.width = 100;
doubleButtonBg.height = 100;
var doubleButtonText = new Text2('Solar: 75', {
	size: 25,
	fill: 0xFFD700
});
doubleButtonText.anchor.set(0.5, 0.5);
doubleButtonText.y = -60;
doubleButton.addChild(doubleButtonText);
doubleButton.x = 100;
LK.gui.bottom.addChild(doubleButton);
var tripleButton = new Container();
var tripleButtonBg = tripleButton.attachAsset('tripleBarrelTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
tripleButtonBg.width = 100;
tripleButtonBg.height = 100;
var tripleButtonText = new Text2('Solar: 100', {
	size: 25,
	fill: 0xFFD700
});
tripleButtonText.anchor.set(0.5, 0.5);
tripleButtonText.y = -60;
tripleButton.addChild(tripleButtonText);
tripleButton.x = 300;
LK.gui.bottom.addChild(tripleButton);
var frozenButton = new Container();
var frozenButtonBg = frozenButton.attachAsset('frozenTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
frozenButtonBg.width = 100;
frozenButtonBg.height = 100;
var frozenButtonText = new Text2('Solar: 60', {
	size: 25,
	fill: 0xFFD700
});
frozenButtonText.anchor.set(0.5, 0.5);
frozenButtonText.y = -60;
frozenButton.addChild(frozenButtonText);
frozenButton.x = -200;
frozenButton.y = -150;
LK.gui.bottom.addChild(frozenButton);
var flameButton = new Container();
var flameButtonBg = flameButton.attachAsset('flameThrowerTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
flameButtonBg.width = 100;
flameButtonBg.height = 100;
var flameButtonText = new Text2('Solar: 80', {
	size: 25,
	fill: 0xFFD700
});
flameButtonText.anchor.set(0.5, 0.5);
flameButtonText.y = -60;
flameButton.addChild(flameButtonText);
flameButton.x = 0;
flameButton.y = -150;
LK.gui.bottom.addChild(flameButton);
var acidButton = new Container();
var acidButtonBg = acidButton.attachAsset('acidTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
acidButtonBg.width = 100;
acidButtonBg.height = 100;
var acidButtonText = new Text2('Solar: 70', {
	size: 25,
	fill: 0xFFD700
});
acidButtonText.anchor.set(0.5, 0.5);
acidButtonText.y = -60;
acidButton.addChild(acidButtonText);
acidButton.x = 200;
acidButton.y = -150;
LK.gui.bottom.addChild(acidButton);
var autoButton = new Container();
var autoButtonBg = autoButton.attachAsset('autoTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
autoButtonBg.width = 100;
autoButtonBg.height = 100;
var autoButtonText = new Text2('Solar: 120', {
	size: 25,
	fill: 0xFFD700
});
autoButtonText.anchor.set(0.5, 0.5);
autoButtonText.y = -60;
autoButton.addChild(autoButtonText);
autoButton.x = -100;
autoButton.y = -250;
LK.gui.bottom.addChild(autoButton);
var minigunButton = new Container();
var minigunButtonBg = minigunButton.attachAsset('minigunTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
minigunButtonBg.width = 100;
minigunButtonBg.height = 100;
var minigunButtonText = new Text2('Solar: 90', {
	size: 25,
	fill: 0xFFD700
});
minigunButtonText.anchor.set(0.5, 0.5);
minigunButtonText.y = -60;
minigunButton.addChild(minigunButtonText);
minigunButton.x = 100;
minigunButton.y = -250;
LK.gui.bottom.addChild(minigunButton);
var rocketButton = new Container();
var rocketButtonBg = rocketButton.attachAsset('rocketTurret', {
	anchorX: 0.5,
	anchorY: 0.5
});
rocketButtonBg.width = 100;
rocketButtonBg.height = 100;
var rocketButtonText = new Text2('Solar: 150', {
	size: 25,
	fill: 0xFFD700
});
rocketButtonText.anchor.set(0.5, 0.5);
rocketButtonText.y = -60;
rocketButton.addChild(rocketButtonText);
rocketButton.x = 0;
rocketButton.y = -250;
LK.gui.bottom.addChild(rocketButton);
// Create navigation arrows
var leftArrow = new Container();
var leftArrowBg = leftArrow.attachAsset('gridCell', {
	anchorX: 0.5,
	anchorY: 0.5
});
leftArrowBg.width = 80;
leftArrowBg.height = 80;
leftArrowBg.tint = 0x4169E1;
var leftArrowText = new Text2('<', {
	size: 60,
	fill: 0xFFFFFF
});
leftArrowText.anchor.set(0.5, 0.5);
leftArrow.addChild(leftArrowText);
leftArrow.x = -450;
leftArrow.y = 0;
LK.gui.bottom.addChild(leftArrow);
var rightArrow = new Container();
var rightArrowBg = rightArrow.attachAsset('gridCell', {
	anchorX: 0.5,
	anchorY: 0.5
});
rightArrowBg.width = 80;
rightArrowBg.height = 80;
rightArrowBg.tint = 0x4169E1;
var rightArrowText = new Text2('>', {
	size: 60,
	fill: 0xFFFFFF
});
rightArrowText.anchor.set(0.5, 0.5);
rightArrow.addChild(rightArrowText);
rightArrow.x = 450;
rightArrow.y = 0;
LK.gui.bottom.addChild(rightArrow);
// Create page indicator text
var pageText = new Text2('Page 1/3', {
	size: 30,
	fill: 0xFFFFFF
});
pageText.anchor.set(0.5, 0.5);
pageText.x = 0;
pageText.y = 100;
LK.gui.bottom.addChild(pageText);
for (var row = 0; row < GRID_ROWS; row++) {
	for (var col = 0; col < GRID_COLS; col++) {
		var cell = game.addChild(LK.getAsset('gridCell', {
			anchorX: 0,
			anchorY: 0
		}));
		cell.x = col * GRID_SIZE;
		cell.y = row * GRID_SIZE + 200;
		cell.alpha = 0.1;
		cell.gridX = col;
		cell.gridY = row;
		cell.occupied = false;
		gridCells.push(cell);
	}
}
// Create single house spanning the bottom of screen
var house = new House();
house.x = 1024; // Center of screen width (2048/2)
house.y = 2500;
houses.push(house);
game.addChild(house);
// Initialize turret page display
updateTurretPage();
solarButton.down = function (x, y, obj) {
	if (energy < 25) {
		// Flash button red to indicate insufficient energy
		LK.effects.flashObject(solarButton, 0xff0000, 300);
		return;
	}
	dragging = true;
	selectedTower = 'solar';
	placementCost = 25;
	dragTurret = game.addChild(LK.getAsset('solarCollector', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 120;
	dragTurret.height = 120;
	dragTurret.alpha = 0.8;
	// Convert GUI position to game coordinates
	var globalPos = game.toLocal({
		x: solarButton.x,
		y: solarButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
	// Flash button green to indicate drag started
	LK.effects.flashObject(solarButton, 0x00ff00, 200);
};
classicButton.down = function (x, y, obj) {
	if (energy < 50) return;
	dragging = true;
	selectedTower = 'classic';
	placementCost = 50;
	dragTurret = game.addChild(LK.getAsset('classicTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	// Convert GUI position to game coordinates
	var globalPos = game.toLocal({
		x: classicButton.x,
		y: classicButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
doubleButton.down = function (x, y, obj) {
	if (energy < 75) return;
	dragging = true;
	selectedTower = 'double';
	placementCost = 75;
	dragTurret = game.addChild(LK.getAsset('doubleBarrelTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	// Convert GUI position to game coordinates
	var globalPos = game.toLocal({
		x: doubleButton.x,
		y: doubleButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
tripleButton.down = function (x, y, obj) {
	if (energy < 100) return;
	dragging = true;
	selectedTower = 'triple';
	placementCost = 100;
	dragTurret = game.addChild(LK.getAsset('tripleBarrelTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	// Convert GUI position to game coordinates
	var globalPos = game.toLocal({
		x: tripleButton.x,
		y: tripleButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
frozenButton.down = function (x, y, obj) {
	if (energy < 60) return;
	dragging = true;
	selectedTower = 'frozen';
	placementCost = 60;
	dragTurret = game.addChild(LK.getAsset('frozenTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: frozenButton.x,
		y: frozenButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
flameButton.down = function (x, y, obj) {
	if (energy < 80) return;
	dragging = true;
	selectedTower = 'flame';
	placementCost = 80;
	dragTurret = game.addChild(LK.getAsset('flameThrowerTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: flameButton.x,
		y: flameButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
acidButton.down = function (x, y, obj) {
	if (energy < 70) return;
	dragging = true;
	selectedTower = 'acid';
	placementCost = 70;
	dragTurret = game.addChild(LK.getAsset('acidTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: acidButton.x,
		y: acidButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
autoButton.down = function (x, y, obj) {
	if (energy < 120) return;
	dragging = true;
	selectedTower = 'auto';
	placementCost = 120;
	dragTurret = game.addChild(LK.getAsset('autoTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: autoButton.x,
		y: autoButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
minigunButton.down = function (x, y, obj) {
	if (energy < 90) return;
	dragging = true;
	selectedTower = 'minigun';
	placementCost = 90;
	dragTurret = game.addChild(LK.getAsset('minigunTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: minigunButton.x,
		y: minigunButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
rocketButton.down = function (x, y, obj) {
	if (energy < 150) return;
	dragging = true;
	selectedTower = 'rocket';
	placementCost = 150;
	dragTurret = game.addChild(LK.getAsset('rocketTurret', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	dragTurret.width = 60;
	dragTurret.height = 60;
	dragTurret.alpha = 0.7;
	var globalPos = game.toLocal({
		x: rocketButton.x,
		y: rocketButton.y
	});
	dragTurret.x = globalPos.x;
	dragTurret.y = globalPos.y;
};
leftArrow.down = function (x, y, obj) {
	if (currentPage > 0) {
		currentPage--;
		updateTurretPage();
		LK.effects.flashObject(leftArrow, 0x00ff00, 200);
	} else {
		LK.effects.flashObject(leftArrow, 0xff0000, 200);
	}
};
rightArrow.down = function (x, y, obj) {
	if (currentPage < maxPages) {
		currentPage++;
		updateTurretPage();
		LK.effects.flashObject(rightArrow, 0x00ff00, 200);
	} else {
		LK.effects.flashObject(rightArrow, 0xff0000, 200);
	}
};
function updateTurretPage() {
	// Hide all turret buttons first
	solarButton.visible = false;
	classicButton.visible = false;
	doubleButton.visible = false;
	tripleButton.visible = false;
	frozenButton.visible = false;
	flameButton.visible = false;
	acidButton.visible = false;
	autoButton.visible = false;
	minigunButton.visible = false;
	rocketButton.visible = false;
	// Page 0: Basic turrets (solar, classic, double, triple)
	if (currentPage === 0) {
		solarButton.visible = true;
		classicButton.visible = true;
		doubleButton.visible = true;
		tripleButton.visible = true;
	}
	// Page 1: Special turrets (frozen, flame, acid)
	else if (currentPage === 1) {
		frozenButton.visible = true;
		flameButton.visible = true;
		acidButton.visible = true;
		// Reposition special turrets to bottom row
		frozenButton.x = -200;
		frozenButton.y = 0;
		flameButton.x = 0;
		flameButton.y = 0;
		acidButton.x = 200;
		acidButton.y = 0;
	}
	// Page 2: Advanced turrets (auto, minigun, rocket)
	else if (currentPage === 2) {
		autoButton.visible = true;
		minigunButton.visible = true;
		rocketButton.visible = true;
		// Reposition advanced turrets to bottom row
		autoButton.x = -200;
		autoButton.y = 0;
		minigunButton.x = 0;
		minigunButton.y = 0;
		rocketButton.x = 200;
		rocketButton.y = 0;
	}
	// Update page indicator
	pageText.setText('Page ' + (currentPage + 1) + '/' + (maxPages + 1));
	// Update arrow visibility/opacity
	leftArrow.alpha = currentPage > 0 ? 1.0 : 0.5;
	rightArrow.alpha = currentPage < maxPages ? 1.0 : 0.5;
}
function highlightValidCells(show) {
	for (var i = 0; i < gridCells.length; i++) {
		if (!gridCells[i].occupied) {
			gridCells[i].alpha = show ? 0.3 : 0.1;
			gridCells[i].tint = show ? 0x00ff00 : 0xffffff;
		} else {
			gridCells[i].alpha = show ? 0.2 : 0.1;
			gridCells[i].tint = show ? 0xff0000 : 0xffffff;
		}
	}
}
game.down = function (x, y, obj) {
	// Allow starting drag from anywhere in the game area when not already dragging
	if (!dragging) {
		// Check if we clicked near any existing turret buttons area
		var buttonAreaY = 2732 - 200; // Near bottom of screen
		if (y > buttonAreaY) {
			// Near button area, let button handlers manage this
			return;
		}
		// Check if we clicked in the house area (exclude from drag zone)
		var houseAreaY = 2400; // Above house area
		if (y > houseAreaY) {
			// In house area, don't allow dragging
			return;
		}
	}
};
game.move = function (x, y, obj) {
	if (dragging && dragTurret) {
		dragTurret.x = x;
		dragTurret.y = y;
		highlightValidCells(true);
		// Show range circle for turrets (not solar collectors)
		if (selectedTower !== 'solar' && !dragTurret.rangeCircle) {
			var range = 250; // Default range
			if (selectedTower === 'double') range = 280;
			if (selectedTower === 'triple') range = 300;
			if (selectedTower === 'explosive') range = 280;
			if (selectedTower === 'laser') range = 280;
			if (selectedTower === 'freeze') range = 150;
			if (selectedTower === 'frozen') range = 200;
			if (selectedTower === 'flame') range = 150;
			if (selectedTower === 'acid') range = 140;
			if (selectedTower === 'auto') range = 400;
			if (selectedTower === 'minigun') range = 220;
			if (selectedTower === 'rocket') range = 300;
			dragTurret.rangeCircle = dragTurret.addChild(LK.getAsset('rangeCircle', {
				anchorX: 0.5,
				anchorY: 0.5
			}));
			dragTurret.rangeCircle.width = range * 2;
			dragTurret.rangeCircle.height = range * 2;
			dragTurret.rangeCircle.alpha = 0.2;
			dragTurret.rangeCircle.tint = 0x00ff00;
		}
		// Show visual feedback for valid placement area
		var gridX = Math.floor(x / GRID_SIZE);
		var gridY = Math.floor((y - 200) / GRID_SIZE);
		var houseAreaY = 2400; // House area boundary
		// Check if in house area (exclude from placement)
		var inHouseArea = y > houseAreaY;
		if (gridX >= 0 && gridX < GRID_COLS && gridY >= 0 && gridY < GRID_ROWS && !inHouseArea) {
			var cellIndex = gridY * GRID_COLS + gridX;
			if (cellIndex < gridCells.length && !gridCells[cellIndex].occupied) {
				dragTurret.tint = 0x00ff00; // Green tint for valid placement
				dragTurret.alpha = 0.8;
			} else {
				dragTurret.tint = 0xff0000; // Red tint for invalid placement
				dragTurret.alpha = 0.5;
			}
		} else {
			dragTurret.tint = 0xff0000; // Red tint for out of bounds or house area
			dragTurret.alpha = 0.5;
		}
	}
};
game.up = function (x, y, obj) {
	if (dragging && dragTurret) {
		highlightValidCells(false);
		var gridX = Math.floor(x / GRID_SIZE);
		var gridY = Math.floor((y - 200) / GRID_SIZE);
		var validPlacement = false;
		var houseAreaY = 2400; // House area boundary
		var inHouseArea = y > houseAreaY;
		// Expanded validation - check if within game bounds, valid grid, and not in house area
		if (gridX >= 0 && gridX < GRID_COLS && gridY >= 0 && gridY < GRID_ROWS && !inHouseArea) {
			var cellIndex = gridY * GRID_COLS + gridX;
			if (cellIndex < gridCells.length && !gridCells[cellIndex].occupied && energy >= placementCost) {
				validPlacement = true;
				energy -= placementCost;
				gridCells[cellIndex].occupied = true;
				var newX = gridX * GRID_SIZE + GRID_SIZE / 2;
				var newY = gridY * GRID_SIZE + GRID_SIZE / 2 + 200;
				if (selectedTower === 'solar') {
					var collector = new SolarCollector();
					collector.x = newX;
					collector.y = newY;
					solarCollectors.push(collector);
					game.addChild(collector);
				} else if (selectedTower === 'classic') {
					var tower = new ClassicTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'double') {
					var tower = new DoubleBarrelTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'triple') {
					var tower = new TripleBarrelTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'frozen') {
					var tower = new FrozenTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'flame') {
					var tower = new FlameThrowerTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'acid') {
					var tower = new AcidTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'auto') {
					var tower = new AutoTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'minigun') {
					var tower = new MinigunTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				} else if (selectedTower === 'rocket') {
					var tower = new RocketTurret();
					tower.x = newX;
					tower.y = newY;
					towers.push(tower);
					game.addChild(tower);
				}
				LK.getSound('build').play();
				// Flash effect for successful placement
				LK.effects.flashObject(dragTurret, 0x00ff00, 300);
			} else {
				// Invalid placement - show error feedback
				LK.effects.flashObject(dragTurret, 0xff0000, 300);
			}
		} else {
			// Out of bounds or house area - show error feedback
			LK.effects.flashObject(dragTurret, 0xff0000, 300);
		}
		// Clean up drag state
		dragTurret.destroy();
		dragTurret = null;
		dragging = false;
		selectedTower = null;
		placementCost = 0;
	}
};
function spawnZombie(isBoss) {
	var zombie;
	if (isBoss) {
		zombie = new BossZombie();
		zombie.health *= difficultyMultiplier;
		zombie.damage = Math.floor(zombie.damage * difficultyMultiplier);
		bossActive = true;
	} else {
		// Determine zombie type based on probability and game time
		var zombieRoll = Math.random();
		var stageMultiplier = Math.min(currentStage, 5); // Cap at stage 5 for variety
		if (!specialZombiesUnlocked) {
			// First 100 seconds: only basic zombies, tough zombies, and runners
			if (zombieRoll < 0.6) {
				// 60% Basic zombie
				zombie = new Zombie();
			} else if (zombieRoll < 0.8) {
				// 20% Tough zombie
				zombie = new ToughZombie();
			} else {
				// 20% Runner zombie
				zombie = new RunnerZombie();
			}
		} else {
			// After 100 seconds: all zombie types available
			if (zombieRoll < 0.5) {
				// 50% Basic zombie
				zombie = new Zombie();
			} else if (zombieRoll < 0.65) {
				// 15% Tough zombie
				zombie = new ToughZombie();
			} else if (zombieRoll < 0.8) {
				// 15% Runner zombie
				zombie = new RunnerZombie();
			} else if (zombieRoll < 0.9) {
				// 10% Umbrella zombie
				zombie = new UmbrellaZombie();
			} else {
				// 10% Crows zombie
				zombie = new CrowsZombie();
			}
		}
		if (!isEasyPeriod) {
			zombie.health = Math.floor(zombie.health * difficultyMultiplier);
			zombie.damage = Math.floor(zombie.damage * difficultyMultiplier);
			if (zombie.speed) {
				zombie.speed *= Math.min(difficultyMultiplier * 0.3 + 0.7, 2);
			}
		}
	}
	// Spawn only from top of screen
	zombie.x = Math.random() * 2048;
	zombie.y = 150;
	zombies.push(zombie);
	game.addChild(zombie);
}
function onBossDefeated() {
	bossActive = false;
	bossProgress = 0;
	currentStage++;
	difficultyMultiplier += 0.5;
	// Switch day/night cycle
	isDaytime = !isDaytime;
	dayText.setText(isDaytime ? 'Day' : 'Night');
	dayText.tint = isDaytime ? 0xFFD700 : 0x4169E1;
	game.setBackgroundColor(isDaytime ? 0x87CEEB : 0x191970);
	// Update solar collectors
	for (var i = 0; i < solarCollectors.length; i++) {
		solarCollectors[i].isDaytime = isDaytime;
	}
	// Flash screen effect for stage transition
	LK.effects.flashScreen(isDaytime ? 0xFFD700 : 0x191970, 1000);
	// Increase boss progress requirement by 25 seconds (1500 frames at 60fps)
	bossProgressMax += 84; // 25 seconds * 60fps * 0.056 increment = ~84 progress units
}
game.update = function () {
	// Track total game time and unlock special zombies after 100 seconds
	gameTimer++;
	if (!specialZombiesUnlocked && gameTimer >= 6000) {
		// 100 seconds * 60 fps = 6000 frames
		specialZombiesUnlocked = true;
		// Flash screen to indicate special zombies are now available
		LK.effects.flashScreen(0x800080, 500); // Purple flash
	}
	// Handle easy period for new players
	if (isEasyPeriod) {
		easyPeriodTimer++;
		if (easyPeriodTimer >= easyPeriodDuration) {
			isEasyPeriod = false;
		}
	}
	// Update progress bar based on time and zombie kills
	if (!bossActive) {
		var progressIncrease = isEasyPeriod ? 0.028 : 0.056; // Reduced to make 300 seconds initially
		bossProgress += progressIncrease;
		// Check if boss should spawn
		if (bossProgress >= bossProgressMax) {
			spawnZombie(true);
		}
	}
	// Update progress bar visual
	var progressPercent = Math.min(bossProgress / bossProgressMax, 1);
	progressBarFill.width = 400 * progressPercent;
	// Change progress bar color based on proximity to boss
	if (progressPercent > 0.8) {
		progressBarFill.tint = 0xff0000; // Red when close to boss
	} else if (progressPercent > 0.6) {
		progressBarFill.tint = 0xffaa00; // Orange
	} else {
		progressBarFill.tint = 0xff6600; // Default orange
	}
	// Animate progress bar when close to boss spawn
	if (progressPercent > 0.9 && !bossActive) {
		var pulseScale = 1 + Math.sin(LK.ticks * 0.3) * 0.1;
		progressBarFill.scaleY = pulseScale;
		progressBarBg.scaleY = pulseScale;
	} else {
		progressBarFill.scaleY = 1;
		progressBarBg.scaleY = 1;
	}
	// Day/night cycle is now only controlled by boss defeats
	// Remove automatic timer-based day/night switching
	// Wave-based zombie spawning - only trigger new wave when 1-2 zombies remain
	if (zombiesToSpawn <= 0 && !bossActive) {
		// Check if we should spawn next wave based on remaining zombies
		var aliveZombies = zombies.length;
		if (aliveZombies <= 2) {
			// Only spawn when 1-2 zombies left
			waveTimer++;
			// Random delay between waves (2-5 seconds after condition is met)
			var minWaveDelay = 120; // 2 seconds
			var maxWaveDelay = 300; // 5 seconds
			var randomWaveDelay = Math.floor(Math.random() * (maxWaveDelay - minWaveDelay + 1)) + minWaveDelay;
			if (waveTimer >= randomWaveDelay) {
				waveTimer = 0;
				wave++;
				// Spawn 5-8 zombies per wave depending on difficulty
				var baseZombies = isEasyPeriod ? 5 : 6;
				var maxZombies = isEasyPeriod ? 6 : 8;
				// Increase chance of more zombies as difficulty rises
				var zombieCount = baseZombies;
				if (!isEasyPeriod && Math.random() < (difficultyMultiplier - 1) * 0.4) {
					zombieCount = maxZombies;
				}
				zombiesPerWave = zombieCount;
				zombiesToSpawn = zombiesPerWave;
			}
		} else {
			// Reset wave timer if too many zombies still alive
			waveTimer = 0;
		}
	} else if (zombiesToSpawn > 0) {
		zombieSpawnTimer++;
		// Spawn zombies quickly within a wave (every 0.5-1 second)
		var spawnDelay = isEasyPeriod ? 60 : Math.max(30, 60 - Math.floor(difficultyMultiplier * 5));
		if (zombieSpawnTimer >= spawnDelay) {
			zombieSpawnTimer = 0;
			zombiesToSpawn--;
			spawnZombie(false);
		}
	}
	for (var i = solarCollectors.length - 1; i >= 0; i--) {
		if (solarCollectors[i].destroyed) {
			solarCollectors.splice(i, 1);
		}
	}
	for (var i = towers.length - 1; i >= 0; i--) {
		if (towers[i].destroyed) {
			towers.splice(i, 1);
		}
	}
	for (var i = zombies.length - 1; i >= 0; i--) {
		if (zombies[i].destroyed) {
			// Check if destroyed zombie was a boss
			if (zombies[i].health > 100 && bossActive) {
				// Boss zombies have much higher health
				onBossDefeated();
			} else if (!bossActive) {
				// Regular zombie kill increases boss progress slightly
				bossProgress += 0.1; // Reduced to match slower progress bar
			}
			zombies.splice(i, 1);
		}
	}
	for (var i = houses.length - 1; i >= 0; i--) {
		if (houses[i].destroyed) {
			houses.splice(i, 1);
		}
	}
	energyText.setText('Energy: ' + energy);
	waveText.setText('Wave: ' + wave);
	livesText.setText('Lives: ' + lives);
	stageText.setText('Stage: ' + currentStage);
	// Update progress text based on state
	if (bossActive) {
		progressText.setText('BOSS ACTIVE!');
		progressText.tint = 0xff0000;
		var pulseAlpha = 0.5 + Math.sin(LK.ticks * 0.5) * 0.5;
		progressText.alpha = pulseAlpha;
	} else if (isEasyPeriod) {
		progressText.setText('Preparation Time');
		progressText.tint = 0x00ff00;
		progressText.alpha = 1;
	} else {
		progressText.setText('Boss Progress: ' + Math.floor(progressPercent * 100) + '%');
		progressText.tint = 0xFFFFFF;
		progressText.alpha = 1;
	}
	if (lives <= 0) {
		LK.showGameOver();
	}
};
LK.playMusic('gameMusic');

===================================================================
--- original.js
+++ change.js
@@ -1297,37 +1297,47 @@
 	self.health = 100;
 	self.maxHealth = 100;
 	self.isDaytime = true;
 	self.energyTimer = 0;
-	self.energyGenerationTime = Math.floor(Math.random() * 300) + 600; // Random 10-15 seconds (600-900 frames at 60fps)
+	self.sunCount = 0; // Track how many suns have been generated
+	self.maxSuns = 10; // Maximum of 10 suns per collector
+	self.energyGenerationTime = Math.floor(Math.random() * 600) + 900; // Random 15-25 seconds (900-1500 frames at 60fps)
 	self.update = function () {
-		self.energyTimer++;
-		if (self.energyTimer >= self.energyGenerationTime) {
-			self.energyTimer = 0;
-			// Set new random interval for next generation
-			self.energyGenerationTime = Math.floor(Math.random() * 300) + 600; // Random 10-15 seconds
-			var energyGain = 20;
-			energy += energyGain;
-			LK.getSound('collect').play();
-			var energyText = new Text2('+' + energyGain, {
-				size: 30,
-				fill: 0xFFD700
-			});
-			energyText.anchor.set(0.5, 0.5);
-			energyText.x = 0;
-			energyText.y = -40;
-			self.addChild(energyText);
-			tween(energyText, {
-				y: -80,
-				alpha: 0
-			}, {
-				duration: 1000,
-				onFinish: function onFinish() {
-					energyText.destroy();
+		// Only generate energy if we haven't reached the sun limit
+		if (self.sunCount < self.maxSuns) {
+			self.energyTimer++;
+			if (self.energyTimer >= self.energyGenerationTime) {
+				self.energyTimer = 0;
+				self.sunCount++; // Increment sun count
+				// Set new random interval for next generation (15-25 seconds)
+				self.energyGenerationTime = Math.floor(Math.random() * 600) + 900; // Random 15-25 seconds
+				var energyGain = 20;
+				energy += energyGain;
+				LK.getSound('collect').play();
+				var energyText = new Text2('+' + energyGain, {
+					size: 30,
+					fill: 0xFFD700
+				});
+				energyText.anchor.set(0.5, 0.5);
+				energyText.x = 0;
+				energyText.y = -40;
+				self.addChild(energyText);
+				tween(energyText, {
+					y: -80,
+					alpha: 0
+				}, {
+					duration: 1000,
+					onFinish: function onFinish() {
+						energyText.destroy();
+					}
+				});
+				// Visual indication when collector is exhausted
+				if (self.sunCount >= self.maxSuns) {
+					collector.tint = 0x666666; // Dim the collector when exhausted
 				}
-			});
+			}
 		}
-		collector.tint = self.isDaytime ? 0xFFD700 : 0xB8860B;
+		collector.tint = self.isDaytime && self.sunCount < self.maxSuns ? 0xFFD700 : 0xB8860B;
 	};
 	self.takeDamage = function (damage) {
 		self.health -= damage;
 		if (self.health <= 0) {
@@ -2618,28 +2628,36 @@
 		progressBarBg.scaleY = 1;
 	}
 	// Day/night cycle is now only controlled by boss defeats
 	// Remove automatic timer-based day/night switching
-	// Wave-based zombie spawning with limited numbers per wave
+	// Wave-based zombie spawning - only trigger new wave when 1-2 zombies remain
 	if (zombiesToSpawn <= 0 && !bossActive) {
-		waveTimer++;
-		// Random delay between waves (10-25 seconds based on difficulty)
-		var minWaveDelay = isEasyPeriod ? 600 : Math.max(600, 900 - Math.floor(difficultyMultiplier * 60)); // 10-15 seconds
-		var maxWaveDelay = isEasyPeriod ? 1500 : Math.max(900, 1500 - Math.floor(difficultyMultiplier * 30)); // 15-25 seconds
-		var randomWaveDelay = Math.floor(Math.random() * (maxWaveDelay - minWaveDelay + 1)) + minWaveDelay;
-		if (waveTimer >= randomWaveDelay) {
-			waveTimer = 0;
-			wave++;
-			// Spawn 3-4 zombies per wave depending on difficulty
-			var baseZombies = isEasyPeriod ? 3 : 3;
-			var maxZombies = isEasyPeriod ? 3 : 4;
-			// Increase chance of 4 zombies as difficulty rises
-			var zombieCount = baseZombies;
-			if (!isEasyPeriod && Math.random() < (difficultyMultiplier - 1) * 0.3) {
-				zombieCount = maxZombies;
+		// Check if we should spawn next wave based on remaining zombies
+		var aliveZombies = zombies.length;
+		if (aliveZombies <= 2) {
+			// Only spawn when 1-2 zombies left
+			waveTimer++;
+			// Random delay between waves (2-5 seconds after condition is met)
+			var minWaveDelay = 120; // 2 seconds
+			var maxWaveDelay = 300; // 5 seconds
+			var randomWaveDelay = Math.floor(Math.random() * (maxWaveDelay - minWaveDelay + 1)) + minWaveDelay;
+			if (waveTimer >= randomWaveDelay) {
+				waveTimer = 0;
+				wave++;
+				// Spawn 5-8 zombies per wave depending on difficulty
+				var baseZombies = isEasyPeriod ? 5 : 6;
+				var maxZombies = isEasyPeriod ? 6 : 8;
+				// Increase chance of more zombies as difficulty rises
+				var zombieCount = baseZombies;
+				if (!isEasyPeriod && Math.random() < (difficultyMultiplier - 1) * 0.4) {
+					zombieCount = maxZombies;
+				}
+				zombiesPerWave = zombieCount;
+				zombiesToSpawn = zombiesPerWave;
 			}
-			zombiesPerWave = zombieCount;
-			zombiesToSpawn = zombiesPerWave;
+		} else {
+			// Reset wave timer if too many zombies still alive
+			waveTimer = 0;
 		}
 	} else if (zombiesToSpawn > 0) {
 		zombieSpawnTimer++;
 		// Spawn zombies quickly within a wave (every 0.5-1 second)