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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('bulletCore', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.damage = 50;
	self.row = 0;
	self.update = function () {
		self.x += self.speed;
		// Check collision with zombies
		for (var i = zombies.length - 1; i >= 0; i--) {
			var zombie = zombies[i];
			if (zombie.gridRow === self.row && Math.abs(self.x - zombie.x) < 30) {
				// Handle ShieldZombie shield mechanics
				if (zombie instanceof ShieldZombie && zombie.hasShield) {
					zombie.shieldHealth -= self.damage;
					// Shield takes damage instead of zombie
				} else {
					zombie.health -= self.damage;
				}
				if (zombie.health <= 0) {
					zombie.destroy();
					zombies.splice(i, 1);
				}
				self.destroy();
				for (var j = bullets.length - 1; j >= 0; j--) {
					if (bullets[j] === self) {
						bullets.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Remove if off screen
		if (self.x > 2048) {
			self.destroy();
			for (var k = bullets.length - 1; k >= 0; k--) {
				if (bullets[k] === self) {
					bullets.splice(k, 1);
					break;
				}
			}
		}
	};
	return self;
});
var CherryBomb = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('cherryImage', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 50;
	self.gridRow = 0;
	self.gridCol = 0;
	self.fuseTime = 180; // 3 seconds at 60fps
	self.planted = false;
	self.update = function () {
		if (!self.planted) {
			self.planted = true;
			self.plantedTick = LK.ticks;
		}
		// Check if any zombie is touching the cherry bomb
		var shouldExplode = false;
		for (var i = 0; i < zombies.length; i++) {
			var zombie = zombies[i];
			var distance = Math.sqrt(Math.pow(self.x - zombie.x, 2) + Math.pow(self.y - zombie.y, 2));
			if (distance < 50) {
				// Touch distance - much smaller than explosion radius
				shouldExplode = true;
				break;
			}
		}
		// Explode after fuse time OR when touched by zombie
		if (shouldExplode || LK.ticks - self.plantedTick > self.fuseTime) {
			LK.getSound('cherybomb').play(); // Play cherrybomb sound when exploding
			// Destroy all zombies in 3x3 area around bomb
			for (var i = zombies.length - 1; i >= 0; i--) {
				var zombie = zombies[i];
				var distance = Math.sqrt(Math.pow(self.x - zombie.x, 2) + Math.pow(self.y - zombie.y, 2));
				if (distance < 200) {
					// Explosion radius
					zombie.destroy();
					zombies.splice(i, 1);
				}
			}
			// Remove self
			for (var j = plants.length - 1; j >= 0; j--) {
				if (plants[j] === self) {
					plants.splice(j, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	return self;
});
var DoublePeashooter = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('placedDoublePeaBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var cannon1 = self.attachAsset('peashooterCannon', {
		anchorX: 0,
		anchorY: 0.3
	});
	cannon1.x = 25;
	cannon1.y = -10;
	var cannon2 = self.attachAsset('peashooterCannon', {
		anchorX: 0,
		anchorY: 0.7
	});
	cannon2.x = 25;
	cannon2.y = 10;
	self.health = 100;
	self.lastShot = 0;
	self.shootDelay = 100; // Faster than regular peashooter
	self.gridRow = 0;
	self.gridCol = 0;
	self.shoot = function () {
		// Shoot two bullets
		var bullet1 = new Bullet();
		bullet1.x = self.x + 50;
		bullet1.y = self.y - 10;
		bullet1.row = self.gridRow;
		bullets.push(bullet1);
		game.addChild(bullet1);
		var bullet2 = new Bullet();
		bullet2.x = self.x + 50;
		bullet2.y = self.y + 10;
		bullet2.row = self.gridRow;
		bullets.push(bullet2);
		game.addChild(bullet2);
		LK.getSound('peasshooter').play(); // Play peashooter sound when shooting
	};
	self.update = function () {
		if (LK.ticks - self.lastShot > self.shootDelay) {
			var zombieInRow = false;
			for (var i = 0; i < zombies.length; i++) {
				if (zombies[i].gridRow === self.gridRow && zombies[i].x > self.x) {
					zombieInRow = true;
					break;
				}
			}
			if (zombieInRow) {
				self.shoot();
				self.lastShot = LK.ticks;
			}
		}
	};
	return self;
});
var FastZombie = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('zombieBody', {
		anchorX: 0.5,
		anchorY: 1
	});
	body.y = 25;
	body.tint = 0xFF6666; // Reddish tint to distinguish from regular zombie
	var head = self.attachAsset('zombieHead', {
		anchorX: 0.5,
		anchorY: 1
	});
	head.y = -10;
	head.tint = 0xFF6666; // Reddish tint to distinguish from regular zombie
	self.health = 60; // Lower health than regular zombie
	self.speed = 1.2; // Faster than regular zombie
	self.gridRow = 0;
	self.isEating = false;
	self.eatDamage = 15; // More damage when eating
	self.hasAttackedHouse = false;
	self.update = function () {
		// Handle freeze effect
		if (self.isFrozen && LK.ticks > self.frozenUntil) {
			self.speed = self.originalSpeed;
			self.isFrozen = false;
			// Remove visual freeze effect but keep original red tint
			if (self.body) {
				self.body.tint = 0xFF6666;
			}
			if (self.head) {
				self.head.tint = 0xFF6666;
			}
		}
		if (!self.isEating) {
			self.x -= self.speed;
		}
		// Check if reached house - zombie damages house once with 15 health
		if (self.x <= 150 && !self.hasAttackedHouse) {
			houseHealth -= 15;
			healthText.setText('House Health: ' + houseHealth);
			self.hasAttackedHouse = true;
			// Destroy zombie after attacking house
			self.destroy();
			for (var z = zombies.length - 1; z >= 0; z--) {
				if (zombies[z] === self) {
					zombies.splice(z, 1);
					break;
				}
			}
			// Check game over condition
			if (houseHealth <= 0) {
				LK.showGameOver();
			}
		}
		// Check collision with plants
		for (var i = plants.length - 1; i >= 0; i--) {
			var plant = plants[i];
			if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
				self.isEating = true;
				// WallNut plants block zombies completely
				if (plant instanceof WallNut) {
					plant.health -= 15; // Fast zombie damages wallnut more
					// Zombie cannot move past WallNut until it's destroyed
					if (plant.health > 0) {
						// Push zombie back slightly to prevent overlap
						self.x = plant.x + 55;
					}
				} else {
					plant.health -= 3; // Fast zombie eats faster
				}
				if (plant.health <= 0) {
					plant.destroy();
					plants.splice(i, 1);
					self.isEating = false;
				}
				break;
			}
		}
	};
	return self;
});
var IceBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('iceBulletCore', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add ice crystal effects around the main bullet
	for (var i = 0; i < 4; i++) {
		var crystal = self.attachAsset('iceCrystal', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var angle = i / 4 * Math.PI * 2;
		crystal.x = Math.cos(angle) * 8;
		crystal.y = Math.sin(angle) * 8;
		crystal.rotation = angle;
		crystal.scaleX = 0.3;
		crystal.scaleY = 0.4;
		crystal.alpha = 0.8;
		// Add sparkle animation to crystals
		tween(crystal, {
			alpha: 0.3
		}, {
			duration: 300,
			easing: tween.easeInOut
		});
		tween(crystal, {
			alpha: 0.8
		}, {
			duration: 300,
			easing: tween.easeInOut
		});
	}
	self.speed = 6; // Slightly faster than regular bullet
	self.damage = 40;
	self.row = 0;
	self.update = function () {
		self.x += self.speed;
		// Check collision with zombies
		for (var i = zombies.length - 1; i >= 0; i--) {
			var zombie = zombies[i];
			if (zombie.gridRow === self.row && Math.abs(self.x - zombie.x) < 30) {
				// Handle ShieldZombie shield mechanics
				if (zombie instanceof ShieldZombie && zombie.hasShield) {
					zombie.shieldHealth -= self.damage;
					// Shield takes damage instead of zombie
				} else {
					zombie.health -= self.damage;
				}
				// Apply freeze effect - slow down zombie for 3 seconds
				if (!zombie.isFrozen) {
					zombie.originalSpeed = zombie.speed;
					zombie.speed = zombie.speed * 0.3; // Slow to 30% speed
					zombie.isFrozen = true;
					zombie.frozenUntil = LK.ticks + 180; // 3 seconds at 60fps
					// Visual freeze effect
					if (zombie.body) {
						zombie.body.tint = 0x87CEEB;
					}
					if (zombie.head) {
						zombie.head.tint = 0x87CEEB;
					}
				}
				if (zombie.health <= 0) {
					zombie.destroy();
					zombies.splice(i, 1);
				}
				self.destroy();
				for (var j = bullets.length - 1; j >= 0; j--) {
					if (bullets[j] === self) {
						bullets.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Remove if off screen
		if (self.x > 2048) {
			self.destroy();
			for (var k = bullets.length - 1; k >= 0; k--) {
				if (bullets[k] === self) {
					bullets.splice(k, 1);
					break;
				}
			}
		}
	};
	return self;
});
var IcePeashooter = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('icePeashooterBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add ice crystals around the body for visual effect
	for (var i = 0; i < 6; i++) {
		var crystal = self.attachAsset('iceCrystal', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var angle = i / 6 * Math.PI * 2;
		crystal.x = Math.cos(angle) * 30;
		crystal.y = Math.sin(angle) * 30;
		crystal.rotation = angle;
		crystal.scaleX = 0.6;
		crystal.scaleY = 0.8;
	}
	var cannon = self.attachAsset('peashooterCannon', {
		anchorX: 0,
		anchorY: 0.5
	});
	cannon.x = 25;
	cannon.y = 0;
	cannon.tint = 0x87CEEB; // Light blue tint for ice effect
	self.health = 100;
	self.lastShot = 0;
	self.shootDelay = 120; // Faster than regular peashooter
	self.gridRow = 0;
	self.gridCol = 0;
	self.shoot = function () {
		var bullet = new IceBullet();
		bullet.x = self.x + 50;
		bullet.y = self.y;
		bullet.row = self.gridRow;
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('peasshooter').play(); // Play peashooter sound when shooting
	};
	self.update = function () {
		if (LK.ticks - self.lastShot > self.shootDelay) {
			// Check if there's a zombie in this row
			var zombieInRow = false;
			for (var i = 0; i < zombies.length; i++) {
				if (zombies[i].gridRow === self.gridRow && zombies[i].x > self.x) {
					zombieInRow = true;
					break;
				}
			}
			if (zombieInRow) {
				self.shoot();
				self.lastShot = LK.ticks;
			}
		}
	};
	return self;
});
var JumperZombie = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('zombieBody', {
		anchorX: 0.5,
		anchorY: 1
	});
	body.y = 25;
	body.tint = 0x00FF00; // Green tint for jumper zombie
	var head = self.attachAsset('zombieHead', {
		anchorX: 0.5,
		anchorY: 1
	});
	head.y = -10;
	head.tint = 0x00FF00;
	self.health = 80;
	self.speed = 0.8;
	self.gridRow = 0;
	self.isEating = false;
	self.eatDamage = 12;
	self.hasAttackedHouse = false;
	self.canJump = true;
	self.update = function () {
		// Handle freeze effect
		if (self.isFrozen && LK.ticks > self.frozenUntil) {
			self.speed = self.originalSpeed;
			self.isFrozen = false;
			// Remove visual freeze effect but keep original green tint
			if (self.body) {
				self.body.tint = 0x00FF00;
			}
			if (self.head) {
				self.head.tint = 0x00FF00;
			}
		}
		if (!self.isEating) {
			self.x -= self.speed;
		}
		// Jump over first plant encountered
		if (self.canJump) {
			for (var i = 0; i < plants.length; i++) {
				var plant = plants[i];
				if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 80 && self.x > plant.x) {
					self.x = plant.x - 80; // Jump past the plant
					self.canJump = false;
					break;
				}
			}
		}
		// Check if reached house
		if (self.x <= 150 && !self.hasAttackedHouse) {
			houseHealth -= 12;
			healthText.setText('House Health: ' + houseHealth);
			self.hasAttackedHouse = true;
			self.destroy();
			for (var z = zombies.length - 1; z >= 0; z--) {
				if (zombies[z] === self) {
					zombies.splice(z, 1);
					break;
				}
			}
			if (houseHealth <= 0) {
				LK.showGameOver();
			}
		}
		// Check collision with plants (only if can't jump)
		if (!self.canJump) {
			for (var i = plants.length - 1; i >= 0; i--) {
				var plant = plants[i];
				if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
					self.isEating = true;
					// WallNut plants block zombies completely
					if (plant instanceof WallNut) {
						plant.health -= 12; // Jumper zombie damages wallnut
						// Zombie cannot move past WallNut until it's destroyed
						if (plant.health > 0) {
							// Push zombie back slightly to prevent overlap
							self.x = plant.x + 55;
						}
					} else {
						plant.health -= 3;
					}
					if (plant.health <= 0) {
						plant.destroy();
						plants.splice(i, 1);
						self.isEating = false;
					}
					break;
				}
			}
		}
	};
	return self;
});
// Event handlers
var LevelButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonBg = self.attachAsset('levelButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.levelNumber = 1;
	self.setLevelNumber = function (number) {
		self.levelNumber = number;
		self.levelText.setText(number.toString());
	};
	self.isUnlocked = true;
	self.stars = 0;
	self.maxStars = 3;
	// Create level number text
	self.levelText = new Text2(self.levelNumber.toString(), {
		size: 50,
		fill: 0xFFFFFF
	});
	self.levelText.anchor.set(0.5, 0.5);
	self.levelText.y = -30;
	self.addChild(self.levelText);
	// Create stars display
	self.starContainers = [];
	for (var i = 0; i < self.maxStars; i++) {
		var star = LK.getAsset('starShape', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		star.x = (i - 1) * 50;
		star.y = 30;
		star.tint = 0x666666; // Dark by default
		self.addChild(star);
		self.starContainers.push(star);
	}
	self.setStars = function (starCount) {
		self.stars = starCount;
		for (var i = 0; i < self.maxStars; i++) {
			if (i < starCount) {
				self.starContainers[i].tint = 0xFFD700; // Golden
			} else {
				self.starContainers[i].tint = 0x666666; // Dark
			}
		}
	};
	self.setUnlocked = function (unlocked) {
		self.isUnlocked = unlocked;
		if (unlocked) {
			buttonBg.tint = 0xFFFFFF;
			self.levelText.tint = 0xFFFFFF;
		} else {
			buttonBg.tint = 0x666666;
			self.levelText.tint = 0x666666;
		}
	};
	self.down = function (x, y, obj) {
		if (self.isUnlocked) {
			LK.getSound('buttonClick').play();
			// Start the selected level
			startLevel(self.levelNumber);
		} else {
			// Play a different sound or show feedback for locked levels
			console.log('Level ' + self.levelNumber + ' is locked. Complete previous levels first.');
		}
	};
	return self;
});
// Plant classes
var Peashooter = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('peashooterBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var cannon = self.attachAsset('peashooterCannon', {
		anchorX: 0,
		anchorY: 0.5
	});
	cannon.x = 25;
	cannon.y = 0;
	self.health = 100;
	self.lastShot = 0;
	self.shootDelay = 150; // 2.5 seconds at 60fps
	self.gridRow = 0;
	self.gridCol = 0;
	self.shoot = function () {
		var bullet = new Bullet();
		bullet.x = self.x + 50;
		bullet.y = self.y;
		bullet.row = self.gridRow;
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('peasshooter').play(); // Play peashooter sound when shooting
	};
	self.update = function () {
		if (LK.ticks - self.lastShot > self.shootDelay) {
			// Check if there's a zombie in this row
			var zombieInRow = false;
			for (var i = 0; i < zombies.length; i++) {
				if (zombies[i].gridRow === self.gridRow && zombies[i].x > self.x) {
					zombieInRow = true;
					break;
				}
			}
			if (zombieInRow) {
				self.shoot();
				self.lastShot = LK.ticks;
			}
		}
	};
	return self;
});
var ShieldZombie = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('zombieBody', {
		anchorX: 0.5,
		anchorY: 1
	});
	body.y = 25;
	body.tint = 0x8B4513; // Brown tint for shield zombie
	var head = self.attachAsset('zombieHead', {
		anchorX: 0.5,
		anchorY: 1
	});
	head.y = -10;
	head.tint = 0x8B4513;
	// Create shield visual using a scaled shape
	var shield = self.attachAsset('placedWallNutBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	shield.x = 25; // Position shield in front of zombie
	shield.y = 0;
	shield.scaleX = 0.8;
	shield.scaleY = 1.2;
	shield.tint = 0xC0C0C0; // Silver color for shield
	self.health = 100; // Zombie health (only takes damage after shield is destroyed)
	self.shieldHealth = 150; // Shield health (must be destroyed first)
	self.speed = 0.4; // Slower than regular zombie due to shield weight
	self.gridRow = 0;
	self.isEating = false;
	self.eatDamage = 12;
	self.hasAttackedHouse = false;
	self.hasShield = true; // Track if shield is still active
	self.update = function () {
		// Handle freeze effect
		if (self.isFrozen && LK.ticks > self.frozenUntil) {
			self.speed = self.originalSpeed;
			self.isFrozen = false;
			// Remove visual freeze effect but keep original brown tint
			if (self.body) {
				self.body.tint = 0x8B4513;
			}
			if (self.head) {
				self.head.tint = 0x8B4513;
			}
		}
		if (!self.isEating) {
			self.x -= self.speed;
		}
		// Check if shield is destroyed
		if (self.hasShield && self.shieldHealth <= 0) {
			self.hasShield = false;
			shield.destroy(); // Remove shield visual
			self.speed = 0.6; // Increase speed when shield is lost
		}
		// Check if reached house
		if (self.x <= 150 && !self.hasAttackedHouse) {
			houseHealth -= 12;
			healthText.setText('House Health: ' + houseHealth);
			self.hasAttackedHouse = true;
			self.destroy();
			for (var z = zombies.length - 1; z >= 0; z--) {
				if (zombies[z] === self) {
					zombies.splice(z, 1);
					break;
				}
			}
			if (houseHealth <= 0) {
				LK.showGameOver();
			}
		}
		// Check collision with plants
		for (var i = plants.length - 1; i >= 0; i--) {
			var plant = plants[i];
			if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
				self.isEating = true;
				// WallNut plants block zombies completely
				if (plant instanceof WallNut) {
					plant.health -= 12;
					// Zombie cannot move past WallNut until it's destroyed
					if (plant.health > 0) {
						// Push zombie back slightly to prevent overlap
						self.x = plant.x + 55;
					}
				} else {
					plant.health -= 3;
				}
				if (plant.health <= 0) {
					plant.destroy();
					plants.splice(i, 1);
					self.isEating = false;
				}
				break;
			}
		}
	};
	return self;
});
var Sunflower = Container.expand(function () {
	var self = Container.call(this);
	// Create petals around center
	for (var i = 0; i < 8; i++) {
		var petal = self.attachAsset('sunflowerPetal', {
			anchorX: 0.5,
			anchorY: 1
		});
		var angle = i / 8 * Math.PI * 2;
		petal.x = Math.cos(angle) * 25;
		petal.y = Math.sin(angle) * 25;
		petal.rotation = angle + Math.PI / 2;
	}
	var center = self.attachAsset('sunflowerCenter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.lastSunGeneration = 0;
	self.sunDelay = 300; // 5 seconds at 60fps
	self.gridRow = 0;
	self.gridCol = 0;
	self.generateSun = function () {
		sun += 25;
		sunText.setText('Sun: ' + sun);
		self.lastSunGeneration = LK.ticks;
	};
	self.update = function () {
		if (LK.ticks - self.lastSunGeneration > self.sunDelay) {
			self.generateSun();
		}
	};
	return self;
});
var TankZombie = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('zombieBody', {
		anchorX: 0.5,
		anchorY: 1
	});
	body.y = 25;
	body.tint = 0x333333; // Dark gray tint for tank zombie
	body.scaleX = 1.5;
	body.scaleY = 1.5;
	var head = self.attachAsset('zombieHead', {
		anchorX: 0.5,
		anchorY: 1
	});
	head.y = -15;
	head.tint = 0x333333;
	head.scaleX = 1.5;
	head.scaleY = 1.5;
	self.health = 300; // Very high health
	self.speed = 0.3; // Very slow
	self.gridRow = 0;
	self.isEating = false;
	self.eatDamage = 20;
	self.hasAttackedHouse = false;
	self.update = function () {
		// Handle freeze effect
		if (self.isFrozen && LK.ticks > self.frozenUntil) {
			self.speed = self.originalSpeed;
			self.isFrozen = false;
			// Remove visual freeze effect but keep original dark gray tint
			if (self.body) {
				self.body.tint = 0x333333;
			}
			if (self.head) {
				self.head.tint = 0x333333;
			}
		}
		if (!self.isEating) {
			self.x -= self.speed;
		}
		// Check if reached house
		if (self.x <= 150 && !self.hasAttackedHouse) {
			houseHealth -= 25;
			healthText.setText('House Health: ' + houseHealth);
			self.hasAttackedHouse = true;
			self.destroy();
			for (var z = zombies.length - 1; z >= 0; z--) {
				if (zombies[z] === self) {
					zombies.splice(z, 1);
					break;
				}
			}
			if (houseHealth <= 0) {
				LK.showGameOver();
			}
		}
		// Check collision with plants
		for (var i = plants.length - 1; i >= 0; i--) {
			var plant = plants[i];
			if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
				self.isEating = true;
				// WallNut plants block zombies completely
				if (plant instanceof WallNut) {
					plant.health -= 20; // Tank zombie destroys wallnut in 1 hit due to high damage
					// Zombie cannot move past WallNut until it's destroyed
					if (plant.health > 0) {
						// Push zombie back slightly to prevent overlap
						self.x = plant.x + 55;
					}
				} else {
					plant.health -= 5; // Tank zombie eats slowly but powerfully
				}
				if (plant.health <= 0) {
					plant.destroy();
					plants.splice(i, 1);
					self.isEating = false;
				}
				break;
			}
		}
	};
	return self;
});
var WallNut = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('placedWallNutBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	body.scaleX = 1.3;
	body.scaleY = 1.3;
	self.health = 20; // Low health, breaks after 2 zombie hits
	self.gridRow = 0;
	self.gridCol = 0;
	self.update = function () {
		// Wall plants don't do anything, just block zombies
		// Check if health decreased to play breaking sound
		if (self.lastHealth === undefined) {
			self.lastHealth = self.health;
		}
		if (self.lastHealth > self.health) {
			LK.getSound('ceviz').play(); // Play walnut breaking sound when damaged
		}
		self.lastHealth = self.health;
	};
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var body = self.attachAsset('zombieBody', {
		anchorX: 0.5,
		anchorY: 1
	});
	body.y = 25;
	var head = self.attachAsset('zombieHead', {
		anchorX: 0.5,
		anchorY: 1
	});
	head.y = -10;
	self.health = 100;
	self.speed = 0.5;
	self.gridRow = 0;
	self.isEating = false;
	self.eatDamage = 10;
	self.hasAttackedHouse = false;
	self.update = function () {
		// Handle freeze effect
		if (self.isFrozen && LK.ticks > self.frozenUntil) {
			self.speed = self.originalSpeed;
			self.isFrozen = false;
			// Remove visual freeze effect
			if (self.body) {
				self.body.tint = 0xFFFFFF;
			}
			if (self.head) {
				self.head.tint = 0xFFFFFF;
			}
		}
		if (!self.isEating) {
			self.x -= self.speed;
		}
		// Check if reached house - zombie damages house once with 10 health
		if (self.x <= 150 && !self.hasAttackedHouse) {
			houseHealth -= 10;
			healthText.setText('House Health: ' + houseHealth);
			self.hasAttackedHouse = true;
			// Destroy zombie after attacking house
			self.destroy();
			for (var z = zombies.length - 1; z >= 0; z--) {
				if (zombies[z] === self) {
					zombies.splice(z, 1);
					break;
				}
			}
			// Check game over condition
			if (houseHealth <= 0) {
				LK.showGameOver();
			}
		}
		// Check collision with plants
		for (var i = plants.length - 1; i >= 0; i--) {
			var plant = plants[i];
			if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
				self.isEating = true;
				// WallNut plants block zombies completely
				if (plant instanceof WallNut) {
					plant.health -= 10; // 2 hits to destroy wallnut
					// Zombie cannot move past WallNut until it's destroyed
					if (plant.health > 0) {
						// Push zombie back slightly to prevent overlap
						self.x = plant.x + 55;
					}
				} else {
					plant.health -= 2;
				}
				if (plant.health <= 0) {
					plant.destroy();
					plants.splice(i, 1);
					self.isEating = false;
				}
				break;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x5D4E37 // Darker brown paper background color
});

/**** 
* Game Code
****/ 
// Import storage for persistent level progression
// Level selection screen variables
var levelButtons = [];
var totalLevels = 10;
var unlockedLevels = storage.unlockedLevels || 1; // Load from storage or default to 1
var levelProgress = storage.levelProgress || {}; // Load from storage or default to empty
// Global game variables
var plants = [];
var zombies = [];
var bullets = [];
var sun = 150;
var sunText;
var houseHealth;
var healthText;
// Music control variables
var isMusicOn = storage.isMusicOn !== undefined ? storage.isMusicOn : true; // Default music on
var musicButton;
// Create brown paper background
var background = LK.getAsset('paperBackground', {
	anchorX: 0,
	anchorY: 0
});
game.addChild(background);
// Create title
var titleBg = LK.getAsset('titleBackground', {
	anchorX: 0.5,
	anchorY: 0.5
});
titleBg.x = 1024;
titleBg.y = 300;
game.addChild(titleBg);
// Create level buttons in a grid layout
var buttonsPerRow = 5;
var buttonSpacingX = 350;
var buttonSpacingY = 250;
var startX = 400;
var startY = 700;
for (var i = 0; i < totalLevels; i++) {
	var levelButton = new LevelButton();
	levelButton.setLevelNumber(i + 1);
	// Calculate position in grid
	var row = Math.floor(i / buttonsPerRow);
	var col = i % buttonsPerRow;
	levelButton.x = startX + col * buttonSpacingX;
	levelButton.y = startY + row * buttonSpacingY;
	// Set unlock status - only unlock levels up to the player's progress
	levelButton.setUnlocked(i < unlockedLevels);
	// Set stars from progress (if any)
	if (levelProgress[i + 1]) {
		levelButton.setStars(levelProgress[i + 1]);
	} else {
		levelButton.setStars(0);
	}
	levelButtons.push(levelButton);
	game.addChild(levelButton);
}
// Create music toggle button with new design
musicButton = LK.getAsset('selectionBox', {
	anchorX: 0.5,
	anchorY: 0.5
});
musicButton.x = 1700;
musicButton.y = 200;
musicButton.scaleX = 0.5;
musicButton.scaleY = 0.5;
musicButton.tint = isMusicOn ? 0x4CAF50 : 0xF44336;
game.addChild(musicButton);
// Add music icon symbol
var musicIcon = new Text2(isMusicOn ? '♪' : '♪', {
	size: 50,
	fill: 0xFFFFFF
});
musicIcon.anchor.set(0.5, 0.5);
musicIcon.x = 1700;
musicIcon.y = 185;
musicIcon.alpha = isMusicOn ? 1.0 : 0.3;
game.addChild(musicIcon);
// Add music status text
var musicText = new Text2(isMusicOn ? 'ON' : 'OFF', {
	size: 24,
	fill: 0xFFFFFF
});
musicText.anchor.set(0.5, 0.5);
musicText.x = 1700;
musicText.y = 215;
game.addChild(musicText);
// Music button event handler
musicButton.down = function () {
	LK.getSound('buttonClick').play();
	isMusicOn = !isMusicOn;
	storage.isMusicOn = isMusicOn; // Save to storage
	musicButton.tint = isMusicOn ? 0x4CAF50 : 0xF44336;
	musicIcon.alpha = isMusicOn ? 1.0 : 0.3;
	musicText.setText(isMusicOn ? 'ON' : 'OFF');
	if (isMusicOn) {
		// Resume music if we're in a level
		if (currentLevel > 0) {
			LK.playMusic('game');
		}
	} else {
		LK.stopMusic();
	}
};
// Function to start a level
function startLevel(levelNumber) {
	LK.getSound('levelSelect').play();
	console.log('Starting level: ' + levelNumber);
	// Set current level for pause functionality
	currentLevel = levelNumber;
	// Clear the level selection screen
	game.removeChildren();
	// Initialize the appropriate level
	if (levelNumber === 1) {
		initializeLevel1();
	} else if (levelNumber === 2) {
		initializeLevel2();
	} else if (levelNumber >= 3 && levelNumber <= 10) {
		// Initialize dynamic levels for 3-10
		initializeDynamicLevel(levelNumber);
	}
}
// Initialize Level 1 Plants vs Zombies game
function initializeLevel1() {
	// Start playing game music only if music is enabled
	if (isMusicOn) {
		LK.playMusic('game');
	}
	// Game variables
	houseHealth = 100;
	sun = 150; // Starting money for level 1
	plants = []; // Make plants global
	zombies = []; // Make zombies global
	bullets = []; // Make bullets global
	var sunflowers = [];
	var lastSunGeneration = 0;
	var lastZombieSpawn = 0;
	// Grid setup
	var gridRows = 10;
	var gridCols = 12;
	var gridCellWidth = 180;
	var gridCellHeight = 120;
	var gridStartX = 200;
	var gridStartY = 500;
	// UI elements
	sunText = new Text2('Sun: ' + sun, {
		size: 40,
		fill: 0x000000
	});
	sunText.x = 1500;
	sunText.y = 50;
	game.addChild(sunText);
	healthText = new Text2('House Health: ' + houseHealth, {
		size: 40,
		fill: 0xFF0000
	});
	healthText.x = 1500;
	healthText.y = 100;
	game.addChild(healthText);
	// Create grid
	for (var row = 0; row < gridRows; row++) {
		for (var col = 0; col < gridCols; col++) {
			var gridCell = LK.getAsset('gridTile', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.75,
				scaleY: 0.75
			});
			gridCell.x = gridStartX + col * gridCellWidth;
			gridCell.y = gridStartY + row * gridCellHeight;
			gridCell.alpha = 0.8;
			gridCell.tint = 0x8B7355;
			game.addChild(gridCell);
		}
	}
	// Plant selection buttons with proper spacing
	var peashooterButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	peashooterButton.x = 400;
	peashooterButton.y = 1800;
	peashooterButton.tint = 0x006400;
	game.addChild(peashooterButton);
	// Add peashooter image to button
	var peashooterImage = LK.getAsset('peashooterBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	peashooterImage.x = 400;
	peashooterImage.y = 1780;
	peashooterImage.scaleX = 1.0;
	peashooterImage.scaleY = 1.0;
	game.addChild(peashooterImage);
	var peashooterCost = 50 + Math.max(0, 1 - 5) * 5; // Level 1 cost: 50, same for levels 1-5
	var peashooterText = new Text2(peashooterCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	peashooterText.anchor.set(0.5, 0.5);
	peashooterText.x = 400;
	peashooterText.y = 1830;
	game.addChild(peashooterText);
	var sunflowerButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	sunflowerButton.x = 1000;
	sunflowerButton.y = 1800;
	sunflowerButton.tint = 0xB8860B;
	game.addChild(sunflowerButton);
	// Add sunflower image to button
	var sunflowerImage = LK.getAsset('sunflowerCenter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	sunflowerImage.x = 1000;
	sunflowerImage.y = 1780;
	sunflowerImage.scaleX = 0.75;
	sunflowerImage.scaleY = 0.75;
	game.addChild(sunflowerImage);
	var sunflowerCost = 50 + Math.max(0, 1 - 5) * 5; // Level 1 cost: 50, same for levels 1-5
	var sunflowerText = new Text2(sunflowerCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	sunflowerText.anchor.set(0.5, 0.5);
	sunflowerText.x = 1000;
	sunflowerText.y = 1830;
	game.addChild(sunflowerText);
	var selectedPlant = null;
	// Event handlers
	peashooterButton.down = function () {
		if (sun >= peashooterCost) {
			selectedPlant = 'peashooter';
		}
	};
	sunflowerButton.down = function () {
		if (sun >= sunflowerCost) {
			selectedPlant = 'sunflower';
		}
	};
	game.down = function (x, y, obj) {
		if (selectedPlant && x >= gridStartX && x <= gridStartX + gridCols * gridCellWidth && y >= gridStartY && y <= gridStartY + gridRows * gridCellHeight) {
			var gridCol = Math.floor((x - gridStartX) / gridCellWidth);
			var gridRow = Math.floor((y - gridStartY) / gridCellHeight);
			// Check if position is valid and empty
			var positionEmpty = true;
			for (var i = 0; i < plants.length; i++) {
				if (plants[i].gridRow === gridRow && plants[i].gridCol === gridCol) {
					positionEmpty = false;
					break;
				}
			}
			if (positionEmpty && gridCol >= 0 && gridCol < gridCols && gridRow >= 0 && gridRow < gridRows) {
				var plant = null;
				if (selectedPlant === 'peashooter' && sun >= peashooterCost) {
					plant = new Peashooter();
					sun -= peashooterCost;
				} else if (selectedPlant === 'sunflower' && sun >= sunflowerCost) {
					plant = new Sunflower();
					sun -= sunflowerCost;
				}
				if (plant) {
					plant.x = gridStartX + gridCol * gridCellWidth;
					plant.y = gridStartY + gridRow * gridCellHeight;
					plant.gridRow = gridRow;
					plant.gridCol = gridCol;
					plants.push(plant);
					game.addChild(plant);
					sunText.setText('Sun: ' + sun);
					selectedPlant = null;
				}
			}
		}
	};
	var zombiesStarted = false; // Track if zombies have started spawning
	// Game update function
	game.update = function () {
		// Start zombie spawning only after first plant is placed
		if (!zombiesStarted && plants.length > 0) {
			zombiesStarted = true;
			lastZombieSpawn = LK.ticks; // Initialize spawn timer
		}
		// Spawn zombies only after they have been started - progressive spawn rate
		// Start slow and gradually increase spawn rate over time
		var gameProgress = Math.min(LK.ticks / 3600, 1); // Progress from 0 to 1 over 60 seconds
		var currentSpawnRate = 600 - gameProgress * 360; // Start at 600 (10 seconds), end at 240 (4 seconds)
		if (zombiesStarted && LK.ticks - lastZombieSpawn > currentSpawnRate) {
			var zombie = new Zombie();
			var row = Math.floor(Math.random() * gridRows);
			zombie.x = 1900;
			zombie.y = gridStartY + row * gridCellHeight;
			zombie.gridRow = row;
			zombies.push(zombie);
			game.addChild(zombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			lastZombieSpawn = LK.ticks;
		}
		// Update all game objects
		for (var i = plants.length - 1; i >= 0; i--) {
			plants[i].update();
		}
		for (var j = zombies.length - 1; j >= 0; j--) {
			zombies[j].update();
		}
		for (var k = bullets.length - 1; k >= 0; k--) {
			bullets[k].update();
		}
		// Generate sun from sunflowers - only if sunflowers exist
		var sunflowerCount = 0;
		for (var s = 0; s < plants.length; s++) {
			if (plants[s] instanceof Sunflower) {
				sunflowerCount++;
			}
		}
		if (sunflowerCount > 0 && LK.ticks - lastSunGeneration > 600) {
			// Every 10 seconds, only if sunflowers exist
			sun += 10;
			sunText.setText('Sun: ' + sun);
			lastSunGeneration = LK.ticks;
		}
		// Final wave - spawn more zombies rapidly in the last 20 seconds
		if (LK.ticks > 2400 && LK.ticks <= 3600) {
			// Between 40s and 60s
			var finalWaveProgress = (LK.ticks - 2400) / 1200; // Progress from 0 to 1 over final wave
			var finalSpawnRate = 120 - finalWaveProgress * 75; // Start at 120 (2 seconds), end at 45 (0.75 seconds)
			if (LK.ticks - lastZombieSpawn > finalSpawnRate) {
				var zombie = new Zombie();
				var row = Math.floor(Math.random() * gridRows);
				zombie.x = 1900;
				zombie.y = gridStartY + row * gridCellHeight;
				zombie.gridRow = row;
				zombies.push(zombie);
				game.addChild(zombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
				lastZombieSpawn = LK.ticks;
			}
		}
		// Check win condition
		if (LK.ticks > 3600 && zombies.length === 0) {
			// After 1 minute with no zombies
			unlockNextLevel(); // Unlock next level when current level is completed
			// Calculate stars based on house health: 3 stars = 80+%, 2 stars = 50+%, 1 star = any health remaining
			var stars = 1;
			if (houseHealth >= 80) {
				stars = 3;
			} else if (houseHealth >= 50) {
				stars = 2;
			}
			setLevelStars(1, stars);
			LK.showYouWin();
		}
	};
}
// Initialize Level 2 Plants vs Zombies game with more zombies and fast zombies
function initializeLevel2() {
	// Start playing game music only if music is enabled
	if (isMusicOn) {
		LK.playMusic('game');
	}
	// Game variables
	houseHealth = 100;
	sun = 200; // Starting money for level 2 (50 more than level 1)
	plants = []; // Make plants global
	zombies = []; // Make zombies global
	bullets = []; // Make bullets global
	// Night theme background
	var nightBg = LK.getAsset('nightBackground', {
		anchorX: 0,
		anchorY: 0
	});
	game.addChild(nightBg);
	var sunflowers = [];
	var lastSunGeneration = 0;
	var lastZombieSpawn = 0;
	var lastFastZombieSpawn = 0;
	// Grid setup
	var gridRows = 10;
	var gridCols = 12;
	var gridCellWidth = 180;
	var gridCellHeight = 120;
	var gridStartX = 200;
	var gridStartY = 500;
	// UI elements
	sunText = new Text2('Sun: ' + sun, {
		size: 40,
		fill: 0x000000
	});
	sunText.x = 1500;
	sunText.y = 50;
	game.addChild(sunText);
	healthText = new Text2('House Health: ' + houseHealth, {
		size: 40,
		fill: 0xFF0000
	});
	healthText.x = 1500;
	healthText.y = 100;
	game.addChild(healthText);
	// Level indicator
	var levelText = new Text2('Level 2', {
		size: 50,
		fill: 0xFFFFFF
	});
	levelText.x = 1500;
	levelText.y = 150;
	game.addChild(levelText);
	// Create grid
	for (var row = 0; row < gridRows; row++) {
		for (var col = 0; col < gridCols; col++) {
			var gridCell = LK.getAsset('gridTile', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.75,
				scaleY: 0.75
			});
			gridCell.x = gridStartX + col * gridCellWidth;
			gridCell.y = gridStartY + row * gridCellHeight;
			gridCell.alpha = 0.9;
			gridCell.tint = 0x1A0D33;
			game.addChild(gridCell);
		}
	}
	// Plant selection buttons with proper spacing
	var peashooterButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	peashooterButton.x = 350;
	peashooterButton.y = 1800;
	peashooterButton.tint = 0x006400;
	game.addChild(peashooterButton);
	// Add peashooter image to button
	var peashooterImage = LK.getAsset('peashooterBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	peashooterImage.x = 350;
	peashooterImage.y = 1780;
	peashooterImage.scaleX = 1.0;
	peashooterImage.scaleY = 1.0;
	game.addChild(peashooterImage);
	var peashooterCost = 50 + Math.max(0, 2 - 5) * 5; // Level 2 cost: 50, same for levels 1-5
	var peashooterText = new Text2(peashooterCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	peashooterText.anchor.set(0.5, 0.5);
	peashooterText.x = 350;
	peashooterText.y = 1830;
	game.addChild(peashooterText);
	var sunflowerButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	sunflowerButton.x = 800;
	sunflowerButton.y = 1800;
	sunflowerButton.tint = 0xB8860B;
	game.addChild(sunflowerButton);
	// Add sunflower image to button
	var sunflowerImage = LK.getAsset('sunflowerCenter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	sunflowerImage.x = 800;
	sunflowerImage.y = 1780;
	sunflowerImage.scaleX = 0.75;
	sunflowerImage.scaleY = 0.75;
	game.addChild(sunflowerImage);
	var sunflowerCost = 50 + Math.max(0, 2 - 5) * 5; // Level 2 cost: 50, same for levels 1-5
	var sunflowerText = new Text2(sunflowerCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	sunflowerText.anchor.set(0.5, 0.5);
	sunflowerText.x = 800;
	sunflowerText.y = 1830;
	game.addChild(sunflowerText);
	var selectedPlant = null;
	// Add CherryBomb button for level 2
	var cherrybombButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	cherrybombButton.x = 1250;
	cherrybombButton.y = 1800;
	cherrybombButton.tint = 0xFF0000;
	game.addChild(cherrybombButton);
	var cherrybombImage = LK.getAsset('cherryImage', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cherrybombImage.x = 1250;
	cherrybombImage.y = 1780;
	cherrybombImage.scaleX = 0.75;
	cherrybombImage.scaleY = 0.75;
	game.addChild(cherrybombImage);
	var cherrybombCost = 100 + Math.max(0, 2 - 5) * 10; // Level 2 cost: 100, same for levels 1-5
	var cherrybombText = new Text2(cherrybombCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	cherrybombText.anchor.set(0.5, 0.5);
	cherrybombText.x = 1250;
	cherrybombText.y = 1830;
	game.addChild(cherrybombText);
	cherrybombButton.down = function () {
		if (sun >= cherrybombCost) {
			selectedPlant = 'cherrybomb';
		}
	};
	// Event handlers
	peashooterButton.down = function () {
		if (sun >= peashooterCost) {
			selectedPlant = 'peashooter';
		}
	};
	sunflowerButton.down = function () {
		if (sun >= sunflowerCost) {
			selectedPlant = 'sunflower';
		}
	};
	game.down = function (x, y, obj) {
		if (selectedPlant && x >= gridStartX && x <= gridStartX + gridCols * gridCellWidth && y >= gridStartY && y <= gridStartY + gridRows * gridCellHeight) {
			var gridCol = Math.floor((x - gridStartX) / gridCellWidth);
			var gridRow = Math.floor((y - gridStartY) / gridCellHeight);
			// Check if position is valid and empty
			var positionEmpty = true;
			for (var i = 0; i < plants.length; i++) {
				if (plants[i].gridRow === gridRow && plants[i].gridCol === gridCol) {
					positionEmpty = false;
					break;
				}
			}
			if (positionEmpty && gridCol >= 0 && gridCol < gridCols && gridRow >= 0 && gridRow < gridRows) {
				var plant = null;
				if (selectedPlant === 'peashooter' && sun >= peashooterCost) {
					plant = new Peashooter();
					sun -= peashooterCost;
				} else if (selectedPlant === 'sunflower' && sun >= sunflowerCost) {
					plant = new Sunflower();
					sun -= sunflowerCost;
				} else if (selectedPlant === 'cherrybomb' && sun >= cherrybombCost) {
					plant = new CherryBomb();
					sun -= cherrybombCost;
				}
				if (plant) {
					plant.x = gridStartX + gridCol * gridCellWidth;
					plant.y = gridStartY + gridRow * gridCellHeight;
					plant.gridRow = gridRow;
					plant.gridCol = gridCol;
					plants.push(plant);
					game.addChild(plant);
					sunText.setText('Sun: ' + sun);
					selectedPlant = null;
				}
			}
		}
	};
	var zombiesStarted = false; // Track if zombies have started spawning
	// Game update function for Level 2
	game.update = function () {
		// Start zombie spawning only after first plant is placed
		if (!zombiesStarted && plants.length > 0) {
			zombiesStarted = true;
			lastZombieSpawn = LK.ticks; // Initialize spawn timer
			lastFastZombieSpawn = LK.ticks; // Initialize fast zombie spawn timer
		}
		// Spawn regular zombies with progressive spawn rate - only after zombies started
		var gameProgress = Math.min(LK.ticks / 5400, 1); // Progress from 0 to 1 over 90 seconds
		var currentSpawnRate = 480 - gameProgress * 330; // Start at 480 (8 seconds), end at 150 (2.5 seconds)
		if (zombiesStarted && LK.ticks - lastZombieSpawn > currentSpawnRate) {
			var zombie = new Zombie();
			var row = Math.floor(Math.random() * gridRows);
			zombie.x = 1900;
			zombie.y = gridStartY + row * gridCellHeight;
			zombie.gridRow = row;
			zombies.push(zombie);
			game.addChild(zombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			lastZombieSpawn = LK.ticks;
		}
		// Spawn fast zombies with progressive spawn rate - only after zombies started
		var fastSpawnRate = 600 - gameProgress * 360; // Start at 600 (10 seconds), end at 240 (4 seconds)
		if (zombiesStarted && LK.ticks - lastFastZombieSpawn > fastSpawnRate) {
			var fastZombie = new FastZombie();
			var row = Math.floor(Math.random() * gridRows);
			fastZombie.x = 1900;
			fastZombie.y = gridStartY + row * gridCellHeight;
			fastZombie.gridRow = row;
			zombies.push(fastZombie);
			game.addChild(fastZombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			lastFastZombieSpawn = LK.ticks;
		}
		// Spawn tank zombies with progressive spawn rate - only after zombies started
		var tankSpawnRate = 900 - gameProgress * 480; // Start at 900 (15 seconds), end at 420 (7 seconds)
		if (zombiesStarted && LK.ticks % tankSpawnRate === 0 && LK.ticks > 0) {
			var tankZombie = new TankZombie();
			var row = Math.floor(Math.random() * gridRows);
			tankZombie.x = 1900;
			tankZombie.y = gridStartY + row * gridCellHeight;
			tankZombie.gridRow = row;
			zombies.push(tankZombie);
			game.addChild(tankZombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
		}
		// Update all game objects
		for (var i = plants.length - 1; i >= 0; i--) {
			plants[i].update();
		}
		for (var j = zombies.length - 1; j >= 0; j--) {
			zombies[j].update();
		}
		for (var k = bullets.length - 1; k >= 0; k--) {
			bullets[k].update();
		}
		// Generate sun from sunflowers - only if sunflowers exist
		var sunflowerCount = 0;
		for (var s = 0; s < plants.length; s++) {
			if (plants[s] instanceof Sunflower) {
				sunflowerCount++;
			}
		}
		if (sunflowerCount > 0 && LK.ticks - lastSunGeneration > 600) {
			// Every 10 seconds, only if sunflowers exist
			sun += 10;
			sunText.setText('Sun: ' + sun);
			lastSunGeneration = LK.ticks;
		}
		// Final wave - spawn many more zombies rapidly in the last 30 seconds
		if (LK.ticks > 3600 && LK.ticks <= 5400) {
			// Between 60s and 90s
			var finalWaveProgress = (LK.ticks - 3600) / 1800; // Progress from 0 to 1 over final wave
			var finalSpawnRate = 90 - finalWaveProgress * 60; // Start at 90 (1.5 seconds), end at 30 (0.5 seconds)
			if (LK.ticks - lastZombieSpawn > finalSpawnRate) {
				var zombie = new Zombie();
				var row = Math.floor(Math.random() * gridRows);
				zombie.x = 1900;
				zombie.y = gridStartY + row * gridCellHeight;
				zombie.gridRow = row;
				zombies.push(zombie);
				game.addChild(zombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
				lastZombieSpawn = LK.ticks;
			}
			// Also spawn fast zombies more frequently during final wave
			var finalFastSpawnRate = 180 - finalWaveProgress * 90; // Start at 180 (3 seconds), end at 90 (1.5 seconds)
			if (LK.ticks - lastFastZombieSpawn > finalFastSpawnRate) {
				var fastZombie = new FastZombie();
				var row = Math.floor(Math.random() * gridRows);
				fastZombie.x = 1900;
				fastZombie.y = gridStartY + row * gridCellHeight;
				fastZombie.gridRow = row;
				zombies.push(fastZombie);
				game.addChild(fastZombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
				lastFastZombieSpawn = LK.ticks;
			}
		}
		// Check win condition (Level 2 lasts longer and requires more survival)
		if (LK.ticks > 5400 && zombies.length === 0) {
			// After 1.5 minutes with no zombies
			unlockNextLevel(); // Unlock next level when current level is completed
			// Calculate stars based on house health: 3 stars = 80+%, 2 stars = 50+%, 1 star = any health remaining
			var stars = 1;
			if (houseHealth >= 80) {
				stars = 3;
			} else if (houseHealth >= 50) {
				stars = 2;
			}
			setLevelStars(2, stars);
			LK.showYouWin();
		}
	};
}
// Initialize Dynamic Level for levels 3 and beyond
function initializeDynamicLevel(levelNumber) {
	// Start playing game music only if music is enabled
	if (isMusicOn) {
		LK.playMusic('game');
	}
	// Game variables
	houseHealth = 100;
	sun = 150 + (levelNumber - 1) * 50; // Progressive starting money: level 1=150, level 2=200, level 3=250, etc.
	plants = []; // Make plants global
	zombies = []; // Make zombies global
	bullets = []; // Make bullets global
	// Dynamic theme based on level
	var themeBackgrounds = ['desertBackground', 'iceBackground', 'jungleBackground'];
	var themeIndex = (levelNumber - 3) % themeBackgrounds.length;
	var themeBg = LK.getAsset(themeBackgrounds[themeIndex], {
		anchorX: 0,
		anchorY: 0
	});
	game.addChild(themeBg);
	var sunflowers = [];
	var lastSunGeneration = 0;
	var lastZombieSpawn = 0;
	var lastFastZombieSpawn = 0;
	// Dynamic difficulty scaling based on level - with increased spawn rates
	var difficultyMultiplier = levelNumber - 2; // Starts at 1 for level 3
	var zombieSpawnRate = Math.max(60, 180 - difficultyMultiplier * 25); // Much faster spawning, increased each level
	var fastZombieSpawnRate = Math.max(120, 360 - difficultyMultiplier * 40); // Much more fast zombies
	var levelDuration = 3600 + difficultyMultiplier * 600; // Longer levels each time
	var finalWaveStart = levelDuration - 1800; // Final wave starts 30 seconds before end
	// Grid setup
	var gridRows = 10;
	var gridCols = 12;
	var gridCellWidth = 180;
	var gridCellHeight = 120;
	var gridStartX = 200;
	var gridStartY = 500;
	// UI elements
	sunText = new Text2('Sun: ' + sun, {
		size: 40,
		fill: 0x000000
	});
	sunText.x = 1500;
	sunText.y = 50;
	game.addChild(sunText);
	healthText = new Text2('House Health: ' + houseHealth, {
		size: 40,
		fill: 0xFF0000
	});
	healthText.x = 1500;
	healthText.y = 100;
	game.addChild(healthText);
	// Level indicator
	var levelText = new Text2('Level ' + levelNumber, {
		size: 50,
		fill: 0xFFFFFF
	});
	levelText.x = 1500;
	levelText.y = 150;
	game.addChild(levelText);
	// Create grid
	for (var row = 0; row < gridRows; row++) {
		for (var col = 0; col < gridCols; col++) {
			var gridCell = LK.getAsset('gridTile', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.75,
				scaleY: 0.75
			});
			gridCell.x = gridStartX + col * gridCellWidth;
			gridCell.y = gridStartY + row * gridCellHeight;
			gridCell.alpha = 0.9;
			// Apply theme-specific tinting with unique grid appearances
			if (themeBackgrounds[themeIndex] === 'desertBackground') {
				gridCell.tint = 0xD2691E; // Sandy orange for desert
			} else if (themeBackgrounds[themeIndex] === 'iceBackground') {
				gridCell.tint = 0x87CEEB; // Light blue for ice
			} else if (themeBackgrounds[themeIndex] === 'jungleBackground') {
				gridCell.tint = 0x228B22; // Forest green for jungle
			}
			game.addChild(gridCell);
		}
	}
	// Plant selection buttons with proper spacing
	var peashooterButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	peashooterButton.x = 300;
	peashooterButton.y = 1800;
	peashooterButton.tint = 0x006400;
	game.addChild(peashooterButton);
	// Add peashooter image to button
	var peashooterImage = LK.getAsset('peashooterBody', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	peashooterImage.x = 300;
	peashooterImage.y = 1780;
	peashooterImage.scaleX = 1.0;
	peashooterImage.scaleY = 1.0;
	game.addChild(peashooterImage);
	var peashooterCost = 50 + Math.max(0, levelNumber - 5) * 5; // Cost same for levels 1-5, then increases by 5 per level
	var peashooterText = new Text2(peashooterCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	peashooterText.anchor.set(0.5, 0.5);
	peashooterText.x = 300;
	peashooterText.y = 1830;
	game.addChild(peashooterText);
	var sunflowerButton = LK.getAsset('selectionBox', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	sunflowerButton.x = 700;
	sunflowerButton.y = 1800;
	sunflowerButton.tint = 0xB8860B;
	game.addChild(sunflowerButton);
	// Add sunflower image to button
	var sunflowerImage = LK.getAsset('sunflowerCenter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	sunflowerImage.x = 700;
	sunflowerImage.y = 1780;
	sunflowerImage.scaleX = 0.75;
	sunflowerImage.scaleY = 0.75;
	game.addChild(sunflowerImage);
	var sunflowerCost = 50 + Math.max(0, levelNumber - 5) * 5; // Cost same for levels 1-5, then increases by 5 per level
	var sunflowerText = new Text2(sunflowerCost + ' Sun', {
		size: 32,
		fill: 0xFFFFFF
	});
	sunflowerText.anchor.set(0.5, 0.5);
	sunflowerText.x = 700;
	sunflowerText.y = 1830;
	game.addChild(sunflowerText);
	var selectedPlant = null;
	// Add more plant options based on level
	if (levelNumber >= 3) {
		// Add DoublePeashooter button
		var doublePeaButton = LK.getAsset('selectionBox', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		});
		doublePeaButton.x = 1100;
		doublePeaButton.y = 1800;
		doublePeaButton.tint = 0x00AA00;
		game.addChild(doublePeaButton);
		var doublePeaImage = LK.getAsset('placedDoublePeaBody', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		doublePeaImage.x = 1100;
		doublePeaImage.y = 1780;
		game.addChild(doublePeaImage);
		var doublePeaCost = 100 + Math.max(0, levelNumber - 5) * 10; // Cost same for levels 1-5, then increases by 10 per level
		var doublePeaText = new Text2(doublePeaCost + ' Sun', {
			size: 28,
			fill: 0xFFFFFF
		});
		doublePeaText.anchor.set(0.5, 0.5);
		doublePeaText.x = 1100;
		doublePeaText.y = 1830;
		game.addChild(doublePeaText);
		doublePeaButton.down = function () {
			if (sun >= doublePeaCost) {
				selectedPlant = 'doublepea';
			}
		};
	}
	if (levelNumber >= 4) {
		// Add CherryBomb button
		var cherrybombButton = LK.getAsset('selectionBox', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		});
		cherrybombButton.x = 1500;
		cherrybombButton.y = 1800;
		cherrybombButton.tint = 0xFF0000;
		game.addChild(cherrybombButton);
		var cherrybombImage = LK.getAsset('cherryImage', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		cherrybombImage.x = 1500;
		cherrybombImage.y = 1780;
		cherrybombImage.scaleX = 0.6;
		cherrybombImage.scaleY = 0.6;
		game.addChild(cherrybombImage);
		var cherrybombCost = 100 + Math.max(0, levelNumber - 5) * 10; // Cost same for levels 1-5, then increases by 10 per level
		var cherrybombText = new Text2(cherrybombCost + ' Sun', {
			size: 28,
			fill: 0xFFFFFF
		});
		cherrybombText.anchor.set(0.5, 0.5);
		cherrybombText.x = 1500;
		cherrybombText.y = 1830;
		game.addChild(cherrybombText);
		cherrybombButton.down = function () {
			if (sun >= cherrybombCost) {
				selectedPlant = 'cherrybomb';
			}
		};
	}
	if (levelNumber >= 6) {
		// Add WallNut button below CherryBomb button
		var wallnutButton = LK.getAsset('selectionBox', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		});
		wallnutButton.x = 1500;
		wallnutButton.y = 2000;
		wallnutButton.tint = 0x8B4513;
		game.addChild(wallnutButton);
		var wallnutImage = LK.getAsset('placedWallNutBody', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		wallnutImage.x = 1500;
		wallnutImage.y = 1980;
		wallnutImage.scaleX = 0.9;
		wallnutImage.scaleY = 0.9;
		game.addChild(wallnutImage);
		var wallnutCost = 50 + Math.max(0, levelNumber - 5) * 5; // Cost same for levels 1-5, then increases by 5 per level
		var wallnutText = new Text2(wallnutCost + ' Sun', {
			size: 32,
			fill: 0xFFFFFF
		});
		wallnutText.anchor.set(0.5, 0.5);
		wallnutText.x = 1500;
		wallnutText.y = 2030;
		game.addChild(wallnutText);
		wallnutButton.down = function () {
			if (sun >= wallnutCost) {
				selectedPlant = 'wallnut';
			}
		};
	}
	if (levelNumber >= 8) {
		// Add IcePeashooter button below Peashooter
		var icepeaButton = LK.getAsset('selectionBox', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		});
		icepeaButton.x = 300;
		icepeaButton.y = 2000;
		icepeaButton.tint = 0x87CEEB;
		game.addChild(icepeaButton);
		var icepeaImage = LK.getAsset('icePeashooterBody', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		icepeaImage.x = 300;
		icepeaImage.y = 1980;
		icepeaImage.scaleX = 1.0;
		icepeaImage.scaleY = 1.0;
		game.addChild(icepeaImage);
		var icepeaCost = 75 + Math.max(0, levelNumber - 5) * 8; // Cost same for levels 1-5, then increases by 8 per level
		var icepeaText = new Text2(icepeaCost + ' Sun', {
			size: 32,
			fill: 0xFFFFFF
		});
		icepeaText.anchor.set(0.5, 0.5);
		icepeaText.x = 300;
		icepeaText.y = 2030;
		game.addChild(icepeaText);
		icepeaButton.down = function () {
			if (sun >= icepeaCost) {
				selectedPlant = 'icepea';
			}
		};
	}
	// Event handlers
	peashooterButton.down = function () {
		if (sun >= peashooterCost) {
			selectedPlant = 'peashooter';
		}
	};
	sunflowerButton.down = function () {
		if (sun >= sunflowerCost) {
			selectedPlant = 'sunflower';
		}
	};
	game.down = function (x, y, obj) {
		if (selectedPlant && x >= gridStartX && x <= gridStartX + gridCols * gridCellWidth && y >= gridStartY && y <= gridStartY + gridRows * gridCellHeight) {
			var gridCol = Math.floor((x - gridStartX) / gridCellWidth);
			var gridRow = Math.floor((y - gridStartY) / gridCellHeight);
			// Check if position is valid and empty
			var positionEmpty = true;
			for (var i = 0; i < plants.length; i++) {
				if (plants[i].gridRow === gridRow && plants[i].gridCol === gridCol) {
					positionEmpty = false;
					break;
				}
			}
			if (positionEmpty && gridCol >= 0 && gridCol < gridCols && gridRow >= 0 && gridRow < gridRows) {
				var plant = null;
				if (selectedPlant === 'peashooter' && sun >= peashooterCost) {
					plant = new Peashooter();
					sun -= peashooterCost;
				} else if (selectedPlant === 'sunflower' && sun >= sunflowerCost) {
					plant = new Sunflower();
					sun -= sunflowerCost;
				} else if (selectedPlant === 'doublepea' && sun >= doublePeaCost) {
					plant = new DoublePeashooter();
					sun -= doublePeaCost;
				} else if (selectedPlant === 'cherrybomb' && sun >= cherrybombCost) {
					plant = new CherryBomb();
					sun -= cherrybombCost;
				} else if (selectedPlant === 'wallnut' && sun >= wallnutCost) {
					plant = new WallNut();
					sun -= wallnutCost;
				} else if (selectedPlant === 'icepea' && sun >= icepeaCost) {
					plant = new IcePeashooter();
					sun -= icepeaCost;
				}
				if (plant) {
					plant.x = gridStartX + gridCol * gridCellWidth;
					plant.y = gridStartY + gridRow * gridCellHeight;
					plant.gridRow = gridRow;
					plant.gridCol = gridCol;
					plants.push(plant);
					game.addChild(plant);
					sunText.setText('Sun: ' + sun);
					selectedPlant = null;
				}
			}
		}
	};
	var zombiesStarted = false; // Track if zombies have started spawning
	// Game update function for Dynamic Levels
	game.update = function () {
		// Start zombie spawning only after first plant is placed
		if (!zombiesStarted && plants.length > 0) {
			zombiesStarted = true;
			lastZombieSpawn = LK.ticks; // Initialize spawn timer
			lastFastZombieSpawn = LK.ticks; // Initialize fast zombie spawn timer
		}
		// Spawn regular zombies with progressive and scaled difficulty - only after zombies started
		var gameProgress = Math.min(LK.ticks / levelDuration, 1); // Progress from 0 to 1 over level duration
		var progressiveSpawnRate = zombieSpawnRate * 2 - gameProgress * zombieSpawnRate; // Start at 2x spawn rate, end at 1x
		if (zombiesStarted && LK.ticks - lastZombieSpawn > progressiveSpawnRate) {
			var zombie = new Zombie();
			var row = Math.floor(Math.random() * gridRows);
			zombie.x = 1900;
			zombie.y = gridStartY + row * gridCellHeight;
			zombie.gridRow = row;
			zombies.push(zombie);
			game.addChild(zombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			lastZombieSpawn = LK.ticks;
		}
		// Spawn fast zombies with progressive and scaled difficulty - only after zombies started
		var progressiveFastSpawnRate = fastZombieSpawnRate * 2 - gameProgress * fastZombieSpawnRate; // Start at 2x spawn rate, end at 1x
		if (zombiesStarted && LK.ticks - lastFastZombieSpawn > progressiveFastSpawnRate) {
			var fastZombie = new FastZombie();
			var row = Math.floor(Math.random() * gridRows);
			fastZombie.x = 1900;
			fastZombie.y = gridStartY + row * gridCellHeight;
			fastZombie.gridRow = row;
			zombies.push(fastZombie);
			game.addChild(fastZombie);
			LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			lastFastZombieSpawn = LK.ticks;
		}
		// Spawn tank zombies on higher levels with progressive spawn rate - only after zombies started
		if (zombiesStarted && levelNumber >= 4) {
			var baseTankSpawnRate = 420 - difficultyMultiplier * 60;
			var progressiveTankSpawnRate = baseTankSpawnRate * 2 - gameProgress * baseTankSpawnRate; // Start at 2x spawn rate, end at 1x
			if (LK.ticks % progressiveTankSpawnRate === 0 && LK.ticks > 0) {
				var tankZombie = new TankZombie();
				var row = Math.floor(Math.random() * gridRows);
				tankZombie.x = 1900;
				tankZombie.y = gridStartY + row * gridCellHeight;
				tankZombie.gridRow = row;
				zombies.push(tankZombie);
				game.addChild(tankZombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			}
		}
		// Spawn shield zombies starting from level 5 with progressive spawn rate - only after zombies started
		if (zombiesStarted && levelNumber >= 5) {
			var baseShieldSpawnRate = 480 - difficultyMultiplier * 60;
			var progressiveShieldSpawnRate = baseShieldSpawnRate * 2 - gameProgress * baseShieldSpawnRate; // Start at 2x spawn rate, end at 1x
			if (LK.ticks % progressiveShieldSpawnRate === 0 && LK.ticks > 0) {
				var shieldZombie = new ShieldZombie();
				var row = Math.floor(Math.random() * gridRows);
				shieldZombie.x = 1900;
				shieldZombie.y = gridStartY + row * gridCellHeight;
				shieldZombie.gridRow = row;
				zombies.push(shieldZombie);
				game.addChild(shieldZombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			}
		}
		// Spawn jumper zombies on even higher levels with progressive spawn rate - only after zombies started
		if (zombiesStarted && levelNumber >= 6) {
			var baseJumperSpawnRate = 300 - difficultyMultiplier * 35;
			var progressiveJumperSpawnRate = baseJumperSpawnRate * 2 - gameProgress * baseJumperSpawnRate; // Start at 2x spawn rate, end at 1x
			if (LK.ticks % progressiveJumperSpawnRate === 0 && LK.ticks > 0) {
				var jumperZombie = new JumperZombie();
				var row = Math.floor(Math.random() * gridRows);
				jumperZombie.x = 1900;
				jumperZombie.y = gridStartY + row * gridCellHeight;
				jumperZombie.gridRow = row;
				zombies.push(jumperZombie);
				game.addChild(jumperZombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
			}
		}
		// Update all game objects
		for (var i = plants.length - 1; i >= 0; i--) {
			plants[i].update();
		}
		for (var j = zombies.length - 1; j >= 0; j--) {
			zombies[j].update();
		}
		for (var k = bullets.length - 1; k >= 0; k--) {
			bullets[k].update();
		}
		// Generate sun from sunflowers - only if sunflowers exist
		var sunflowerCount = 0;
		for (var s = 0; s < plants.length; s++) {
			if (plants[s] instanceof Sunflower) {
				sunflowerCount++;
			}
		}
		if (sunflowerCount > 0 && LK.ticks - lastSunGeneration > 600) {
			// Every 10 seconds, only if sunflowers exist
			sun += 10;
			sunText.setText('Sun: ' + sun);
			lastSunGeneration = LK.ticks;
		}
		// Final wave - spawn many more zombies rapidly in the final period
		if (LK.ticks > finalWaveStart && LK.ticks <= levelDuration) {
			var finalWaveProgress = (LK.ticks - finalWaveStart) / (levelDuration - finalWaveStart); // Progress from 0 to 1 over final wave
			var baseFinalSpawnRate = Math.max(20, zombieSpawnRate / 4); // Much much faster in final wave
			var progressiveFinalSpawnRate = baseFinalSpawnRate * 2 - finalWaveProgress * baseFinalSpawnRate; // Start at 2x, end at 1x
			if (LK.ticks - lastZombieSpawn > progressiveFinalSpawnRate) {
				var zombie = new Zombie();
				var row = Math.floor(Math.random() * gridRows);
				zombie.x = 1900;
				zombie.y = gridStartY + row * gridCellHeight;
				zombie.gridRow = row;
				zombies.push(zombie);
				game.addChild(zombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
				lastZombieSpawn = LK.ticks;
			}
			// Also spawn fast zombies more frequently during final wave
			var baseFinalFastRate = Math.max(45, fastZombieSpawnRate / 4);
			var progressiveFinalFastRate = baseFinalFastRate * 2 - finalWaveProgress * baseFinalFastRate; // Start at 2x, end at 1x
			if (LK.ticks - lastFastZombieSpawn > progressiveFinalFastRate) {
				var fastZombie = new FastZombie();
				var row = Math.floor(Math.random() * gridRows);
				fastZombie.x = 1900;
				fastZombie.y = gridStartY + row * gridCellHeight;
				fastZombie.gridRow = row;
				zombies.push(fastZombie);
				game.addChild(fastZombie);
				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
				lastFastZombieSpawn = LK.ticks;
			}
		}
		// Check win condition (level duration increases with each level)
		if (LK.ticks > levelDuration && zombies.length === 0) {
			unlockNextLevel(); // Unlock next level when current level is completed
			// Calculate stars based on house health: 3 stars = 80+%, 2 stars = 50+%, 1 star = any health remaining
			var stars = 1;
			if (houseHealth >= 80) {
				stars = 3;
			} else if (houseHealth >= 50) {
				stars = 2;
			}
			setLevelStars(levelNumber, stars);
			LK.showYouWin();
		}
	};
}
// Function to unlock next level
function unlockNextLevel() {
	// Only unlock the next level if current level is completed and next level exists
	if (currentLevel === unlockedLevels && unlockedLevels < totalLevels) {
		unlockedLevels++;
		storage.unlockedLevels = unlockedLevels; // Save to storage
		if (levelButtons[unlockedLevels - 1]) {
			levelButtons[unlockedLevels - 1].setUnlocked(true);
		}
	}
}
// Function to set stars for a level
function setLevelStars(levelNumber, stars) {
	levelProgress[levelNumber] = stars;
	storage.levelProgress = levelProgress; // Save to storage
	if (levelButtons[levelNumber - 1]) {
		levelButtons[levelNumber - 1].setStars(stars);
	}
}
// Pause menu variables
var isPaused = false;
var pauseMenu = null;
var currentLevel = 0;
// Function to show pause menu
function showPauseMenu() {
	if (pauseMenu) return; // Already showing
	// Create pause menu background
	pauseMenu = new Container();
	var pauseBg = LK.getAsset('paperBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.6,
		scaleY: 0.4
	});
	pauseBg.x = 0;
	pauseBg.y = 0;
	pauseBg.tint = 0x000000;
	pauseBg.alpha = 0.8;
	pauseMenu.addChild(pauseBg);
	// Pause title
	var pauseTitle = new Text2('PAUSED', {
		size: 60,
		fill: 0xFFFFFF
	});
	pauseTitle.anchor.set(0.5, 0.5);
	pauseTitle.x = 0;
	pauseTitle.y = -100;
	pauseMenu.addChild(pauseTitle);
	// Restart button
	var restartButton = LK.getAsset('levelButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	restartButton.x = 0;
	restartButton.y = 0;
	restartButton.tint = 0x4CAF50;
	pauseMenu.addChild(restartButton);
	var restartText = new Text2('RESTART', {
		size: 40,
		fill: 0x000000
	});
	restartText.anchor.set(0.5, 0.5);
	restartText.x = 0;
	restartText.y = 0;
	pauseMenu.addChild(restartText);
	// Resume button
	var resumeButton = LK.getAsset('levelButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	resumeButton.x = 0;
	resumeButton.y = 120;
	resumeButton.tint = 0x2196F3;
	pauseMenu.addChild(resumeButton);
	var resumeText = new Text2('RESUME', {
		size: 40,
		fill: 0x000000
	});
	resumeText.anchor.set(0.5, 0.5);
	resumeText.x = 0;
	resumeText.y = 120;
	pauseMenu.addChild(resumeText);
	// Position pause menu at center of screen
	pauseMenu.x = 1024;
	pauseMenu.y = 1366;
	// Add event handlers
	restartButton.down = function () {
		LK.getSound('buttonClick').play();
		hidePauseMenu();
		// Restart current level
		if (currentLevel === 1) {
			game.removeChildren();
			initializeLevel1();
		} else if (currentLevel === 2) {
			game.removeChildren();
			initializeLevel2();
		} else if (currentLevel >= 3 && currentLevel <= 10) {
			game.removeChildren();
			initializeDynamicLevel(currentLevel);
		}
	};
	resumeButton.down = function () {
		LK.getSound('buttonClick').play();
		hidePauseMenu();
	};
	game.addChild(pauseMenu);
}
// Function to hide pause menu
function hidePauseMenu() {
	if (pauseMenu) {
		game.removeChild(pauseMenu);
		pauseMenu = null;
	}
	isPaused = false;
}
// Override game pause handler
LK.on('pause', function () {
	if (currentLevel > 0) {
		// Only show pause menu during gameplay
		isPaused = true;
		showPauseMenu();
	}
});
// Simple game update for level selection screen
game.update = function () {
	// No specific updates needed for level selection
	// All interactions are handled by level button click events
};

===================================================================
--- original.js
+++ change.js
@@ -21,9 +21,15 @@
 		// Check collision with zombies
 		for (var i = zombies.length - 1; i >= 0; i--) {
 			var zombie = zombies[i];
 			if (zombie.gridRow === self.row && Math.abs(self.x - zombie.x) < 30) {
-				zombie.health -= self.damage;
+				// Handle ShieldZombie shield mechanics
+				if (zombie instanceof ShieldZombie && zombie.hasShield) {
+					zombie.shieldHealth -= self.damage;
+					// Shield takes damage instead of zombie
+				} else {
+					zombie.health -= self.damage;
+				}
 				if (zombie.health <= 0) {
 					zombie.destroy();
 					zombies.splice(i, 1);
 				}
@@ -280,9 +286,15 @@
 		// Check collision with zombies
 		for (var i = zombies.length - 1; i >= 0; i--) {
 			var zombie = zombies[i];
 			if (zombie.gridRow === self.row && Math.abs(self.x - zombie.x) < 30) {
-				zombie.health -= self.damage;
+				// Handle ShieldZombie shield mechanics
+				if (zombie instanceof ShieldZombie && zombie.hasShield) {
+					zombie.shieldHealth -= self.damage;
+					// Shield takes damage instead of zombie
+				} else {
+					zombie.health -= self.damage;
+				}
 				// Apply freeze effect - slow down zombie for 3 seconds
 				if (!zombie.isFrozen) {
 					zombie.originalSpeed = zombie.speed;
 					zombie.speed = zombie.speed * 0.3; // Slow to 30% speed
@@ -586,8 +598,105 @@
 		}
 	};
 	return self;
 });
+var ShieldZombie = Container.expand(function () {
+	var self = Container.call(this);
+	var body = self.attachAsset('zombieBody', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	body.y = 25;
+	body.tint = 0x8B4513; // Brown tint for shield zombie
+	var head = self.attachAsset('zombieHead', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	head.y = -10;
+	head.tint = 0x8B4513;
+	// Create shield visual using a scaled shape
+	var shield = self.attachAsset('placedWallNutBody', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	shield.x = 25; // Position shield in front of zombie
+	shield.y = 0;
+	shield.scaleX = 0.8;
+	shield.scaleY = 1.2;
+	shield.tint = 0xC0C0C0; // Silver color for shield
+	self.health = 100; // Zombie health (only takes damage after shield is destroyed)
+	self.shieldHealth = 150; // Shield health (must be destroyed first)
+	self.speed = 0.4; // Slower than regular zombie due to shield weight
+	self.gridRow = 0;
+	self.isEating = false;
+	self.eatDamage = 12;
+	self.hasAttackedHouse = false;
+	self.hasShield = true; // Track if shield is still active
+	self.update = function () {
+		// Handle freeze effect
+		if (self.isFrozen && LK.ticks > self.frozenUntil) {
+			self.speed = self.originalSpeed;
+			self.isFrozen = false;
+			// Remove visual freeze effect but keep original brown tint
+			if (self.body) {
+				self.body.tint = 0x8B4513;
+			}
+			if (self.head) {
+				self.head.tint = 0x8B4513;
+			}
+		}
+		if (!self.isEating) {
+			self.x -= self.speed;
+		}
+		// Check if shield is destroyed
+		if (self.hasShield && self.shieldHealth <= 0) {
+			self.hasShield = false;
+			shield.destroy(); // Remove shield visual
+			self.speed = 0.6; // Increase speed when shield is lost
+		}
+		// Check if reached house
+		if (self.x <= 150 && !self.hasAttackedHouse) {
+			houseHealth -= 12;
+			healthText.setText('House Health: ' + houseHealth);
+			self.hasAttackedHouse = true;
+			self.destroy();
+			for (var z = zombies.length - 1; z >= 0; z--) {
+				if (zombies[z] === self) {
+					zombies.splice(z, 1);
+					break;
+				}
+			}
+			if (houseHealth <= 0) {
+				LK.showGameOver();
+			}
+		}
+		// Check collision with plants
+		for (var i = plants.length - 1; i >= 0; i--) {
+			var plant = plants[i];
+			if (plant.gridRow === self.gridRow && Math.abs(self.x - plant.x) < 50) {
+				self.isEating = true;
+				// WallNut plants block zombies completely
+				if (plant instanceof WallNut) {
+					plant.health -= 12;
+					// Zombie cannot move past WallNut until it's destroyed
+					if (plant.health > 0) {
+						// Push zombie back slightly to prevent overlap
+						self.x = plant.x + 55;
+					}
+				} else {
+					plant.health -= 3;
+				}
+				if (plant.health <= 0) {
+					plant.destroy();
+					plants.splice(i, 1);
+					self.isEating = false;
+				}
+				break;
+			}
+		}
+	};
+	return self;
+});
 var Sunflower = Container.expand(function () {
 	var self = Container.call(this);
 	// Create petals around center
 	for (var i = 0; i < 8; i++) {
@@ -1896,8 +2005,23 @@
 				game.addChild(tankZombie);
 				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
 			}
 		}
+		// Spawn shield zombies starting from level 5 with progressive spawn rate - only after zombies started
+		if (zombiesStarted && levelNumber >= 5) {
+			var baseShieldSpawnRate = 480 - difficultyMultiplier * 60;
+			var progressiveShieldSpawnRate = baseShieldSpawnRate * 2 - gameProgress * baseShieldSpawnRate; // Start at 2x spawn rate, end at 1x
+			if (LK.ticks % progressiveShieldSpawnRate === 0 && LK.ticks > 0) {
+				var shieldZombie = new ShieldZombie();
+				var row = Math.floor(Math.random() * gridRows);
+				shieldZombie.x = 1900;
+				shieldZombie.y = gridStartY + row * gridCellHeight;
+				shieldZombie.gridRow = row;
+				zombies.push(shieldZombie);
+				game.addChild(shieldZombie);
+				LK.getSound('zombisesi').play(); // Play zombie sound when spawning
+			}
+		}
 		// Spawn jumper zombies on even higher levels with progressive spawn rate - only after zombies started
 		if (zombiesStarted && levelNumber >= 6) {
 			var baseJumperSpawnRate = 300 - difficultyMultiplier * 35;
 			var progressiveJumperSpawnRate = baseJumperSpawnRate * 2 - gameProgress * baseJumperSpawnRate; // Start at 2x spawn rate, end at 1x