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

/**** 
* Classes
****/ 
var AllStarZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Tint to differentiate from normal zombie
	zombieGraphics.tint = 0x888888;
	self.health = 200;
	self.maxHealth = 200;
	self.speed = -1.2; // Faster than normal zombie
	self.damage = 40;
	self.attackTimer = 0;
	self.attackDelay = 45; // Faster attack
	self.row = 0;
	self.attacking = false;
	self.update = function () {
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			// No resources awarded on death
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				plant.health -= self.damage;
				LK.effects.flashObject(plant, 0xff0000, 200);
				if (plant.health <= 0) {
					plants.splice(i, 1);
					plant.destroy();
					grid[plant.row][plant.col].occupied = false;
					self.attacking = false;
				}
				break;
			}
		}
	};
	return self;
});
var CherryBomb = Container.expand(function () {
	var self = Container.call(this);
	var bombGraphics = self.attachAsset('cherryBomb', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 150;
	self.health = 50;
	self.maxHealth = 50;
	self.fuseTimer = 0;
	self.fuseDelay = 180; // 3 seconds
	self.update = function () {
		self.fuseTimer++;
		if (self.fuseTimer >= self.fuseDelay) {
			self.explode();
		}
	};
	self.explode = function () {
		var explosion = game.addChild(LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y
		}));
		// Damage all enemies in 3x3 grid area
		var explosionRow = self.row;
		var explosionCol = self.col;
		for (var i = enemies.length - 1; i >= 0; i--) {
			var enemy = enemies[i];
			var enemyRow = enemy.row;
			var enemyCol = Math.floor((enemy.x - GRID_START_X) / CELL_SIZE);
			// Check if enemy is within 3x3 grid area (1 cell in each direction)
			if (enemyRow >= explosionRow - 1 && enemyRow <= explosionRow + 1 && enemyCol >= explosionCol - 1 && enemyCol <= explosionCol + 1) {
				enemy.takeDamage(100);
			}
		}
		LK.getSound('explode').play();
		// Remove explosion after animation
		tween(explosion, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 500,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Remove self
		for (var j = 0; j < plants.length; j++) {
			if (plants[j] === self) {
				plants.splice(j, 1);
				// Clear grid occupied status
				grid[self.row][self.col].occupied = false;
				break;
			}
		}
		self.destroy();
	};
	return self;
});
var Chomper = Container.expand(function () {
	var self = Container.call(this);
	var chomperGraphics = self.attachAsset('chomper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 150;
	self.health = 200;
	self.maxHealth = 200;
	self.row = 0;
	self.col = 0;
	self.attackTimer = 0;
	self.attackDelay = 1200; // 20 seconds at 60fps
	self.canAttack = true;
	self.update = function () {
		if (self.attackTimer > 0) {
			self.attackTimer--;
			if (self.attackTimer === 0) {
				self.canAttack = true;
				// Change back to normal color when ready (no tint)
				tween(chomperGraphics, {
					tint: 0xFFFFFF
				}, {
					duration: 200
				});
			}
		}
		if (self.canAttack) {
			// Check for enemy one square ahead
			var targetCol = self.col + 1;
			if (targetCol < GRID_COLS) {
				for (var i = 0; i < enemies.length; i++) {
					var enemy = enemies[i];
					var enemyCol = Math.floor((enemy.x - GRID_START_X) / CELL_SIZE);
					if (enemy.row === self.row && enemyCol === targetCol && Math.abs(enemy.x - (GRID_START_X + targetCol * CELL_SIZE + CELL_SIZE / 2)) <= 80) {
						self.chomp(enemy);
						break;
					}
				}
			}
		}
	};
	self.chomp = function (enemy) {
		// Instantly kill the enemy
		enemy.takeDamage(10000);
		// Start cooldown
		self.canAttack = false;
		self.attackTimer = self.attackDelay;
		// Visual feedback - change to black during cooldown
		tween(chomperGraphics, {
			tint: 0x000000
		}, {
			duration: 200
		});
		LK.getSound('zombie_hit').play();
	};
	return self;
});
var Gargantuar = Container.expand(function () {
	var self = Container.call(this);
	var gargantuarGraphics = self.attachAsset('gargantuar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Tint to differentiate from other zombies
	gargantuarGraphics.tint = 0x8B4513;
	self.health = 500; // Very high health
	self.maxHealth = 500;
	self.speed = -0.3; // Slow movement
	self.damage = 1000; // One-hit kill for plants
	self.attackTimer = 0;
	self.attackDelay = 90; // Slower attack
	self.row = 0;
	self.attacking = false;
	self.update = function () {
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack (but ignore spikeweed)
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				// Gargantuar destroys any plant with one hit
				plant.health = 0;
				LK.effects.flashObject(plant, 0xff0000, 200);
				plants.splice(i, 1);
				plant.destroy();
				grid[plant.row][plant.col].occupied = false;
				self.attacking = false;
				break;
			}
		}
	};
	return self;
});
var JackInTheBoxZombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('jackInTheBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 80;
	self.maxHealth = 80;
	self.speed = -0.8;
	self.damage = 25;
	self.attackTimer = 0;
	self.attackDelay = 60;
	self.row = 0;
	self.attacking = false;
	// Explosion timer (8-15 seconds randomly)
	self.explosionTimer = 0;
	self.explosionDelay = Math.floor(Math.random() * (900 - 480) + 480); // 8-15 seconds at 60fps
	self.exploded = false;
	self.update = function () {
		if (!self.exploded) {
			self.explosionTimer++;
			if (self.explosionTimer >= self.explosionDelay) {
				self.explode();
				return;
			}
		}
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.explode = function () {
		if (self.exploded) return;
		self.exploded = true;
		var explosion = game.addChild(LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y
		}));
		// Destroy plants in 3x3 area around explosion
		var explosionRow = self.row;
		var explosionCol = Math.floor((self.x - GRID_START_X) / CELL_SIZE);
		for (var row = explosionRow - 1; row <= explosionRow + 1; row++) {
			for (var col = explosionCol - 1; col <= explosionCol + 1; col++) {
				if (row >= 0 && row < GRID_ROWS && col >= 0 && col < GRID_COLS) {
					if (grid[row][col].occupied) {
						for (var i = plants.length - 1; i >= 0; i--) {
							var plant = plants[i];
							if (plant.row === row && plant.col === col) {
								plants.splice(i, 1);
								plant.destroy();
								grid[row][col].occupied = false;
								break;
							}
						}
					}
				}
			}
		}
		LK.getSound('explode').play();
		// Remove explosion after animation
		tween(explosion, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 500,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Remove self from enemies array
		for (var j = 0; j < enemies.length; j++) {
			if (enemies[j] === self) {
				enemies.splice(j, 1);
				break;
			}
		}
		self.destroy();
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack (but ignore spikeweed)
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				plant.health -= self.damage;
				LK.effects.flashObject(plant, 0xff0000, 200);
				if (plant.health <= 0) {
					plants.splice(i, 1);
					plant.destroy();
					grid[plant.row][plant.col].occupied = false;
					self.attacking = false;
				}
				break;
			}
		}
	};
	return self;
});
var Pea = Container.expand(function () {
	var self = Container.call(this);
	var peaGraphics = self.attachAsset('pea', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.damage = 20;
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});
var PeaShooter = Container.expand(function () {
	var self = Container.call(this);
	var shooterGraphics = self.attachAsset('peaShooter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 100;
	self.health = 100;
	self.maxHealth = 100;
	self.shootTimer = 0;
	self.shootDelay = 90; // 1.5 seconds at 60fps
	self.row = 0;
	self.update = function () {
		self.shootTimer++;
		if (self.shootTimer >= self.shootDelay) {
			// Check if there's an enemy in this row
			var hasEnemyInRow = false;
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i].row === self.row && enemies[i].x > self.x) {
					hasEnemyInRow = true;
					break;
				}
			}
			if (hasEnemyInRow) {
				var pea = new Pea();
				pea.x = self.x + 50;
				pea.y = self.y;
				pea.row = self.row;
				projectiles.push(pea);
				game.addChild(pea);
				LK.getSound('shoot').play();
				self.shootTimer = 0;
			}
		}
	};
	return self;
});
var Pruner = Container.expand(function () {
	var self = Container.call(this);
	var prunerGraphics = self.attachAsset('pruner', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.activated = false;
	self.speed = 0;
	self.row = 0;
	self.update = function () {
		if (self.activated) {
			self.x += self.speed;
			// Check collision with enemies while moving
			for (var i = enemies.length - 1; i >= 0; i--) {
				var enemy = enemies[i];
				if (enemy.row === self.row && Math.abs(enemy.x - self.x) <= 80) {
					enemy.takeDamage(1000); // Instant kill
				}
			}
			// Remove if off screen
			if (self.x > 2200) {
				for (var j = 0; j < pruners.length; j++) {
					if (pruners[j] === self) {
						pruners.splice(j, 1);
						break;
					}
				}
				self.destroy();
			}
		}
	};
	self.activate = function () {
		if (!self.activated) {
			self.activated = true;
			self.speed = 12;
			tween(self, {
				tint: 0xff0000
			}, {
				duration: 200
			});
		}
	};
	return self;
});
var Repeater = Container.expand(function () {
	var self = Container.call(this);
	var repeaterGraphics = self.attachAsset('repeater', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 200;
	self.health = 100;
	self.maxHealth = 100;
	self.shootTimer = 0;
	self.shootDelay = 90; // 1.5 seconds at 60fps
	self.row = 0;
	self.update = function () {
		self.shootTimer++;
		if (self.shootTimer >= self.shootDelay) {
			// Check if there's an enemy in this row
			var hasEnemyInRow = false;
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i].row === self.row && enemies[i].x > self.x) {
					hasEnemyInRow = true;
					break;
				}
			}
			if (hasEnemyInRow) {
				// Shoot first pea
				var pea1 = new Pea();
				pea1.x = self.x + 50;
				pea1.y = self.y;
				pea1.row = self.row;
				projectiles.push(pea1);
				game.addChild(pea1);
				// Shoot second pea slightly delayed
				var pea2 = new Pea();
				pea2.x = self.x + 30;
				pea2.y = self.y;
				pea2.row = self.row;
				projectiles.push(pea2);
				game.addChild(pea2);
				LK.getSound('shoot').play();
				self.shootTimer = 0;
			}
		}
	};
	return self;
});
var Skeleton = Container.expand(function () {
	var self = Container.call(this);
	var skeletonGraphics = self.attachAsset('skeleton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 120;
	self.maxHealth = 120;
	self.speed = -1.0;
	self.damage = 20;
	self.attackTimer = 0;
	self.attackDelay = 45; // Faster attack
	self.row = 0;
	self.attacking = false;
	self.update = function () {
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			// No resources awarded on death
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				plant.health -= self.damage;
				LK.effects.flashObject(plant, 0xff0000, 200);
				if (plant.health <= 0) {
					plants.splice(i, 1);
					plant.destroy();
					grid[plant.row][plant.col].occupied = false;
					self.attacking = false;
				}
				break;
			}
		}
	};
	return self;
});
var Spikeweed = Container.expand(function () {
	var self = Container.call(this);
	var spikeweedGraphics = self.attachAsset('spikeweed', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 100;
	self.health = 300;
	self.maxHealth = 300;
	self.damage = 20;
	self.damageTimer = 0;
	self.damageDelay = 36; // 0.6 seconds at 60fps
	self.update = function () {
		self.damageTimer++;
		// Check for enemies stepping on spikeweed
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			if (enemy.row === self.row && Math.abs(enemy.x - self.x) <= 80 && Math.abs(enemy.y - self.y) <= 80) {
				if (self.damageTimer >= self.damageDelay) {
					enemy.takeDamage(self.damage);
					LK.effects.flashObject(self, 0xff0000, 200);
					self.damageTimer = 0;
				}
			}
		}
	};
	return self;
});
var Sun = Container.expand(function () {
	var self = Container.call(this);
	var sunGraphics = self.attachAsset('sun', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 25;
	self.lifeTimer = 0;
	self.maxLifeTime = 600; // 10 seconds
	self.collected = false;
	self.update = function () {
		self.lifeTimer++;
		if (self.lifeTimer >= self.maxLifeTime && !self.collected) {
			// Remove from suns array
			for (var i = 0; i < suns.length; i++) {
				if (suns[i] === self) {
					suns.splice(i, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	self.down = function (x, y, obj) {
		if (!self.collected) {
			self.collected = true;
			resources += self.value;
			updateResourcesDisplay();
			// Animate collection
			tween(self, {
				scaleX: 0.1,
				scaleY: 0.1,
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					// Remove from suns array
					for (var i = 0; i < suns.length; i++) {
						if (suns[i] === self) {
							suns.splice(i, 1);
							break;
						}
					}
					self.destroy();
				}
			});
		}
	};
	return self;
});
var Sunflower = Container.expand(function () {
	var self = Container.call(this);
	var sunflowerGraphics = self.attachAsset('sunflower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 50;
	self.health = 100;
	self.maxHealth = 100;
	self.sunTimer = 0;
	self.sunDelay = 480; // 8 seconds
	self.update = function () {
		self.sunTimer++;
		if (self.sunTimer >= self.sunDelay) {
			self.produceSun();
			self.sunTimer = 0;
		}
	};
	self.produceSun = function () {
		var sun = new Sun();
		sun.x = self.x + (Math.random() - 0.5) * 60;
		sun.y = self.y + (Math.random() - 0.5) * 60;
		suns.push(sun);
		game.addChild(sun);
	};
	return self;
});
var WallNut = Container.expand(function () {
	var self = Container.call(this);
	var nutGraphics = self.attachAsset('wallNut', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cost = 50;
	self.health = 200;
	self.maxHealth = 200;
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 80;
	self.maxHealth = 80;
	self.speed = -0.6;
	self.damage = 25;
	self.attackTimer = 0;
	self.attackDelay = 60; // 1 second
	self.row = 0;
	self.attacking = false;
	self.update = function () {
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			// No resources awarded on death
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				plant.health -= self.damage;
				LK.effects.flashObject(plant, 0xff0000, 200);
				if (plant.health <= 0) {
					plants.splice(i, 1);
					plant.destroy();
					grid[plant.row][plant.col].occupied = false;
					self.attacking = false;
				}
				break;
			}
		}
	};
	return self;
});
var Zomboni = Container.expand(function () {
	var self = Container.call(this);
	var zomboniGraphics = self.attachAsset('zomboni', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Tint to differentiate from other zombies
	zomboniGraphics.tint = 0x444444;
	self.health = 300; // Triple normal zombie health
	self.maxHealth = 300;
	self.speed = -0.8; // Faster than normal zombie
	self.damage = 1000; // Crushes plants instantly
	self.attackTimer = 0;
	self.attackDelay = 30; // Fast crushing
	self.row = 0;
	self.attacking = false;
	self.update = function () {
		if (!self.attacking) {
			self.x += self.speed;
		} else {
			self.attackTimer++;
			if (self.attackTimer >= self.attackDelay) {
				self.attack();
				self.attackTimer = 0;
			}
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		LK.getSound('zombie_hit').play();
		if (self.health <= 0) {
			// Remove from enemies array
			for (var i = 0; i < enemies.length; i++) {
				if (enemies[i] === self) {
					enemies.splice(i, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	self.attack = function () {
		// Find plant to attack and crush it instantly
		for (var i = 0; i < plants.length; i++) {
			var plant = plants[i];
			if (plant.row === self.row && Math.abs(plant.x - self.x) <= 50) {
				// Skip spikeweed - zombies ignore it completely
				if (plant instanceof Spikeweed) {
					continue;
				}
				// Zomboni crushes any plant instantly
				plant.health = 0;
				LK.effects.flashObject(plant, 0xff0000, 200);
				plants.splice(i, 1);
				plant.destroy();
				grid[plant.row][plant.col].occupied = false;
				self.attacking = false;
				break;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2d5016
});

/**** 
* Game Code
****/ 
// Grid setup
var GRID_ROWS = 5;
var GRID_COLS = 9;
var CELL_SIZE = 200;
var GRID_START_X = 224; // Center the grid: (2048 - 1800) / 2
var GRID_START_Y = 700;
// Game state
var resources = 150;
var currentWave = 1;
var enemiesSpawned = 0;
var enemiesPerWave = 5;
var waveDelay = 300; // 5 seconds between waves
var waveTimer = 0;
var gameStartTimer = 0;
var firstWaveStarted = false;
var alertShown = false;
var gameState = 'playing'; // 'playing', 'won', 'lost'
var isNight = false;
var nightTransitionCompleted = false;
var dayTransitionCompleted = false;
// Game objects
var grid = [];
var plants = [];
var enemies = [];
var projectiles = [];
var suns = [];
var pruners = [];
var selectedPlantType = 'peaShooter';
// Plant recharge system
var plantRecharges = {
	peaShooter: 0,
	wallNut: 0,
	sunflower: 0,
	repeater: 0,
	cherryBomb: 0,
	spikeweed: 0,
	chomper: 0
};
var plantRechargeTimes = {
	peaShooter: 180,
	// 3 seconds
	wallNut: 300,
	// 5 seconds
	sunflower: 240,
	// 4 seconds
	repeater: 360,
	// 6 seconds
	cherryBomb: 600,
	// 10 seconds
	spikeweed: 240,
	// 4 seconds
	chomper: 420 // 7 seconds
};
// UI elements
var resourcesText = new Text2('Resources: ' + resources, {
	size: 60,
	fill: 0xFFFFFF
});
resourcesText.anchor.set(0, 0);
resourcesText.x = 120;
resourcesText.y = 50;
LK.gui.topLeft.addChild(resourcesText);
var waveText = new Text2('Wave: ' + currentWave, {
	size: 60,
	fill: 0xFFFFFF
});
waveText.anchor.set(0.5, 0);
waveText.x = 0;
waveText.y = 50;
LK.gui.top.addChild(waveText);
var instructionText = new Text2('Tap grid to place plants', {
	size: 40,
	fill: 0xFFFF00
});
instructionText.anchor.set(0.5, 0);
instructionText.x = 0;
instructionText.y = 120;
LK.gui.top.addChild(instructionText);
// Shovel button at top
var shovelBtn = LK.getAsset('shovel', {
	anchorX: 0.5,
	anchorY: 0.5
});
shovelBtn.x = 0;
shovelBtn.y = 200;
LK.gui.top.addChild(shovelBtn);
// Plant selection buttons with icons and prices
var peaShooterBtn = LK.getAsset('peaShooter', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
peaShooterBtn.x = 75;
peaShooterBtn.y = -160;
LK.gui.bottomLeft.addChild(peaShooterBtn);
var peaShooterPrice = new Text2('100', {
	size: 30,
	fill: 0xFFFFFF
});
peaShooterPrice.anchor.set(0.5, 0);
peaShooterPrice.x = 75;
peaShooterPrice.y = -160;
LK.gui.bottomLeft.addChild(peaShooterPrice);
var wallNutBtn = LK.getAsset('wallNut', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
wallNutBtn.x = 225;
wallNutBtn.y = -160;
LK.gui.bottomLeft.addChild(wallNutBtn);
var wallNutPrice = new Text2('50', {
	size: 30,
	fill: 0xFFFFFF
});
wallNutPrice.anchor.set(0.5, 0);
wallNutPrice.x = 225;
wallNutPrice.y = -160;
LK.gui.bottomLeft.addChild(wallNutPrice);
var sunflowerBtn = LK.getAsset('sunflower', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
sunflowerBtn.x = 375;
sunflowerBtn.y = -160;
LK.gui.bottomLeft.addChild(sunflowerBtn);
var sunflowerPrice = new Text2('50', {
	size: 30,
	fill: 0xFFFFFF
});
sunflowerPrice.anchor.set(0.5, 0);
sunflowerPrice.x = 375;
sunflowerPrice.y = -160;
LK.gui.bottomLeft.addChild(sunflowerPrice);
var repeaterBtn = LK.getAsset('repeater', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
repeaterBtn.x = 525;
repeaterBtn.y = -160;
LK.gui.bottomLeft.addChild(repeaterBtn);
var repeaterPrice = new Text2('200', {
	size: 30,
	fill: 0xFFFFFF
});
repeaterPrice.anchor.set(0.5, 0);
repeaterPrice.x = 525;
repeaterPrice.y = -160;
LK.gui.bottomLeft.addChild(repeaterPrice);
var cherryBombBtn = LK.getAsset('cherryBomb', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
cherryBombBtn.x = 675;
cherryBombBtn.y = -160;
LK.gui.bottomLeft.addChild(cherryBombBtn);
var cherryBombPrice = new Text2('150', {
	size: 30,
	fill: 0xFFFFFF
});
cherryBombPrice.anchor.set(0.5, 0);
cherryBombPrice.x = 675;
cherryBombPrice.y = -160;
LK.gui.bottomLeft.addChild(cherryBombPrice);
var spikeweedBtn = LK.getAsset('spikeweed', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
spikeweedBtn.x = 825;
spikeweedBtn.y = -160;
LK.gui.bottomLeft.addChild(spikeweedBtn);
var spikeweedPrice = new Text2('100', {
	size: 30,
	fill: 0xFFFFFF
});
spikeweedPrice.anchor.set(0.5, 0);
spikeweedPrice.x = 825;
spikeweedPrice.y = -160;
LK.gui.bottomLeft.addChild(spikeweedPrice);
var chomperBtn = LK.getAsset('chomper', {
	anchorX: 0.5,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
chomperBtn.x = 975;
chomperBtn.y = -160;
LK.gui.bottomLeft.addChild(chomperBtn);
var chomperPrice = new Text2('150', {
	size: 30,
	fill: 0xFFFFFF
});
chomperPrice.anchor.set(0.5, 0);
chomperPrice.x = 975;
chomperPrice.y = -160;
LK.gui.bottomLeft.addChild(chomperPrice);
// Create grid
for (var row = 0; row < GRID_ROWS; row++) {
	grid[row] = [];
	for (var col = 0; col < GRID_COLS; col++) {
		var cell = game.addChild(LK.getAsset('gridCell', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: GRID_START_X + col * CELL_SIZE + CELL_SIZE / 2,
			y: GRID_START_Y + row * CELL_SIZE + CELL_SIZE / 2,
			alpha: 0.3
		}));
		cell.row = row;
		cell.col = col;
		cell.occupied = false;
		grid[row][col] = cell;
	}
}
// Create pruners (one per row at the back)
for (var row = 0; row < GRID_ROWS; row++) {
	var pruner = new Pruner();
	pruner.x = GRID_START_X - 50; // Further ahead
	pruner.y = GRID_START_Y + row * CELL_SIZE + CELL_SIZE / 2;
	pruner.row = row;
	pruners.push(pruner);
	game.addChild(pruner);
}
function updateResourcesDisplay() {
	resourcesText.setText('Resources: ' + resources);
}
function updateWaveDisplay() {
	waveText.setText('Wave: ' + currentWave);
}
function getPlantCost(plantType) {
	switch (plantType) {
		case 'peaShooter':
			return 100;
		case 'wallNut':
			return 50;
		case 'sunflower':
			return 50;
		case 'repeater':
			return 200;
		case 'cherryBomb':
			return 150;
		case 'spikeweed':
			return 100;
		case 'chomper':
			return 150;
		default:
			return 100;
	}
}
function canAffordPlant(plantType) {
	return resources >= getPlantCost(plantType);
}
function placePlant(row, col, plantType) {
	if (grid[row][col].occupied || !canAffordPlant(plantType) || plantRecharges[plantType] > 0) {
		return false;
	}
	var plant;
	var cost = getPlantCost(plantType);
	switch (plantType) {
		case 'peaShooter':
			plant = new PeaShooter();
			break;
		case 'wallNut':
			plant = new WallNut();
			break;
		case 'sunflower':
			plant = new Sunflower();
			break;
		case 'repeater':
			plant = new Repeater();
			break;
		case 'cherryBomb':
			plant = new CherryBomb();
			break;
		case 'spikeweed':
			plant = new Spikeweed();
			break;
		case 'chomper':
			plant = new Chomper();
			break;
		default:
			return false;
	}
	plant.x = GRID_START_X + col * CELL_SIZE + CELL_SIZE / 2;
	plant.y = GRID_START_Y + row * CELL_SIZE + CELL_SIZE / 2;
	plant.row = row;
	plant.col = col;
	plants.push(plant);
	game.addChild(plant);
	grid[row][col].occupied = true;
	resources -= cost;
	plantRecharges[plantType] = plantRechargeTimes[plantType];
	updateResourcesDisplay();
	LK.getSound('plant').play();
	return true;
}
function removePlant(row, col) {
	if (!grid[row][col].occupied) {
		return false;
	}
	// Find and remove plant from plants array
	for (var i = 0; i < plants.length; i++) {
		var plant = plants[i];
		if (plant.row === row && plant.col === col) {
			plants.splice(i, 1);
			plant.destroy();
			grid[row][col].occupied = false;
			return true;
		}
	}
	return false;
}
function spawnEnemy(row) {
	var enemy;
	var rand = Math.random();
	var spawnMultiplier = isNight ? 1.5 : 1; // More enemies at night
	var waveMultiplier = Math.min(1 + (currentWave - 1) * 0.15, 2.5); // Increase spawn chance more aggressively with waves
	if (currentWave >= 5 && rand < 0.12 * waveMultiplier) {
		enemy = new Gargantuar();
	} else if (currentWave >= 4 && rand < 0.18 * waveMultiplier) {
		enemy = new Zomboni();
	} else if (currentWave >= 3 && rand < 0.25 * waveMultiplier) {
		enemy = new JackInTheBoxZombie();
	} else if (currentWave >= 2 && rand < 0.35 * waveMultiplier) {
		enemy = new AllStarZombie();
	} else if (currentWave >= 3 && rand < 0.6 * waveMultiplier) {
		enemy = new Skeleton();
	} else {
		enemy = new Zombie();
	}
	enemy.x = 2000;
	enemy.y = GRID_START_Y + row * CELL_SIZE + CELL_SIZE / 2;
	enemy.row = row;
	enemiesSpawned++;
	enemies.push(enemy);
	game.addChild(enemy);
	// Spawn additional enemies at night and more as waves progress from wave 3
	var extraSpawnChance = isNight ? 0.4 : 0.2;
	if (currentWave >= 3) {
		extraSpawnChance += (currentWave - 1) * 0.08; // More aggressive increase with waves
	}
	if (Math.random() < extraSpawnChance) {
		var extraEnemy = new Zombie();
		extraEnemy.x = 2050;
		extraEnemy.y = GRID_START_Y + row * CELL_SIZE + CELL_SIZE / 2;
		extraEnemy.row = row;
		enemies.push(extraEnemy);
		game.addChild(extraEnemy);
	}
}
function checkWaveComplete() {
	if (enemiesSpawned >= enemiesPerWave && enemies.length === 0) {
		currentWave++;
		updateWaveDisplay();
		if (currentWave > 10) {
			gameState = 'won';
			LK.showYouWin();
			return;
		}
		enemiesSpawned = 0;
		enemiesPerWave = Math.min(5 + currentWave * 4, 30);
		waveTimer = 0;
	}
}
function checkGameOver() {
	for (var i = 0; i < enemies.length; i++) {
		if (enemies[i].x <= GRID_START_X - 50) {
			gameState = 'lost';
			LK.showGameOver();
			return;
		}
	}
}
// Button event handlers
shovelBtn.down = function (x, y, obj) {
	selectedPlantType = 'shovel';
	instructionText.setText('Selected: Shovel - Click plants to remove');
};
peaShooterBtn.down = function (x, y, obj) {
	if (plantRecharges.peaShooter === 0) {
		selectedPlantType = 'peaShooter';
		instructionText.setText('Selected: Pea Shooter (100)');
	} else {
		instructionText.setText('Pea Shooter recharging: ' + Math.ceil(plantRecharges.peaShooter / 60) + 's');
	}
};
wallNutBtn.down = function (x, y, obj) {
	if (plantRecharges.wallNut === 0) {
		selectedPlantType = 'wallNut';
		instructionText.setText('Selected: Wall Nut (50)');
	} else {
		instructionText.setText('Wall Nut recharging: ' + Math.ceil(plantRecharges.wallNut / 60) + 's');
	}
};
sunflowerBtn.down = function (x, y, obj) {
	if (plantRecharges.sunflower === 0) {
		selectedPlantType = 'sunflower';
		instructionText.setText('Selected: Sunflower (50)');
	} else {
		instructionText.setText('Sunflower recharging: ' + Math.ceil(plantRecharges.sunflower / 60) + 's');
	}
};
repeaterBtn.down = function (x, y, obj) {
	if (plantRecharges.repeater === 0) {
		selectedPlantType = 'repeater';
		instructionText.setText('Selected: Repeater (200)');
	} else {
		instructionText.setText('Repeater recharging: ' + Math.ceil(plantRecharges.repeater / 60) + 's');
	}
};
cherryBombBtn.down = function (x, y, obj) {
	if (plantRecharges.cherryBomb === 0) {
		selectedPlantType = 'cherryBomb';
		instructionText.setText('Selected: Cherry Bomb (150)');
	} else {
		instructionText.setText('Cherry Bomb recharging: ' + Math.ceil(plantRecharges.cherryBomb / 60) + 's');
	}
};
spikeweedBtn.down = function (x, y, obj) {
	if (plantRecharges.spikeweed === 0) {
		selectedPlantType = 'spikeweed';
		instructionText.setText('Selected: Spikeweed (100)');
	} else {
		instructionText.setText('Spikeweed recharging: ' + Math.ceil(plantRecharges.spikeweed / 60) + 's');
	}
};
chomperBtn.down = function (x, y, obj) {
	if (plantRecharges.chomper === 0) {
		selectedPlantType = 'chomper';
		instructionText.setText('Selected: Chomper (150)');
	} else {
		instructionText.setText('Chomper recharging: ' + Math.ceil(plantRecharges.chomper / 60) + 's');
	}
};
// Grid click handler
game.down = function (x, y, obj) {
	if (gameState !== 'playing') return;
	// Check if click is within grid bounds
	if (x >= GRID_START_X && x <= GRID_START_X + GRID_COLS * CELL_SIZE && y >= GRID_START_Y && y <= GRID_START_Y + GRID_ROWS * CELL_SIZE) {
		var col = Math.floor((x - GRID_START_X) / CELL_SIZE);
		var row = Math.floor((y - GRID_START_Y) / CELL_SIZE);
		if (row >= 0 && row < GRID_ROWS && col >= 0 && col < GRID_COLS) {
			if (selectedPlantType === 'shovel') {
				removePlant(row, col);
			} else {
				placePlant(row, col, selectedPlantType);
			}
		}
	}
};
// Main game loop
game.update = function () {
	if (gameState !== 'playing') return;
	// Handle day/night cycle
	if (currentWave === 6 && !nightTransitionCompleted) {
		// Transition to night after wave 5
		isNight = true;
		nightTransitionCompleted = true;
		game.setBackgroundColor(0x001122);
		// Flash screen to indicate night
		LK.effects.flashScreen(0x000044, 1000);
	} else if (currentWave === 11 && !dayTransitionCompleted) {
		// Transition back to day after wave 10
		isNight = false;
		dayTransitionCompleted = true;
		game.setBackgroundColor(0x2d5016);
		// Flash screen to indicate day
		LK.effects.flashScreen(0x88ff44, 1000);
	}
	// Keep background color consistent during night/day periods
	if (isNight && currentWave >= 6 && currentWave < 11) {
		game.setBackgroundColor(0x001122);
	} else if (!isNight && (currentWave < 6 || currentWave >= 11)) {
		game.setBackgroundColor(0x2d5016);
	}
	// Handle game start delay
	if (!firstWaveStarted) {
		gameStartTimer++;
		if (gameStartTimer >= 1500 && !alertShown) {
			// 25 seconds
			alertShown = true;
			LK.effects.flashScreen(0xff0000, 2000);
			// Create alert text
			var alertText = new Text2('ZOMBIES ARE COMING!', {
				size: 80,
				fill: 0xff0000
			});
			alertText.anchor.set(0.5, 0.5);
			alertText.x = 0;
			alertText.y = 0;
			LK.gui.center.addChild(alertText);
			// Animate alert text
			tween(alertText, {
				scaleX: 1.5,
				scaleY: 1.5
			}, {
				duration: 500
			});
			tween(alertText, {
				alpha: 0
			}, {
				duration: 2000,
				onFinish: function onFinish() {
					alertText.destroy();
					firstWaveStarted = true;
				}
			});
		}
	}
	// Spawn enemies
	if (firstWaveStarted) {
		waveTimer++;
		if (enemiesSpawned < enemiesPerWave && waveTimer % 120 === 0) {
			// Every 2 seconds
			var randomRow = Math.floor(Math.random() * GRID_ROWS);
			spawnEnemy(randomRow);
		}
	}
	// Update projectiles
	for (var i = projectiles.length - 1; i >= 0; i--) {
		var projectile = projectiles[i];
		// Check collision with enemies
		var hit = false;
		for (var j = 0; j < enemies.length; j++) {
			var enemy = enemies[j];
			if (projectile.row === enemy.row && projectile.x >= enemy.x - 35 && projectile.x <= enemy.x + 35) {
				enemy.takeDamage(projectile.damage);
				hit = true;
				break;
			}
		}
		// Remove projectile if hit or off screen
		if (hit || projectile.x > 2100) {
			projectiles.splice(i, 1);
			projectile.destroy();
		}
	}
	// Check enemy-plant collisions
	for (var k = 0; k < enemies.length; k++) {
		var enemy = enemies[k];
		enemy.attacking = false;
		for (var l = 0; l < plants.length; l++) {
			var plant = plants[l];
			if (enemy.row === plant.row && enemy.x >= plant.x - 50 && enemy.x <= plant.x + 50) {
				// Skip spikeweed - zombies ignore it completely and don't stop for it
				if (plant instanceof Spikeweed) {
					continue;
				}
				enemy.attacking = true;
				break;
			}
		}
	}
	// Update plant recharges
	for (var plantType in plantRecharges) {
		if (plantRecharges[plantType] > 0) {
			plantRecharges[plantType]--;
		}
	}
	// Check pruner activation
	for (var m = 0; m < pruners.length; m++) {
		var pruner = pruners[m];
		if (!pruner.activated) {
			for (var n = 0; n < enemies.length; n++) {
				var enemy = enemies[n];
				if (enemy.row === pruner.row && Math.abs(enemy.x - pruner.x) <= 80) {
					pruner.activate();
					break;
				}
			}
		}
	}
	checkWaveComplete();
	checkGameOver();
};
// Play background music
LK.playMusic('Grasswalk');