/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	unlockedTowers: ["thorn", "shroom", "flame", "healing"]
});

/**** 
* Classes
****/ 
var BuildingSpot = Container.expand(function () {
	var self = Container.call(this);
	var spotGraphics;
	if (gameDifficulty === 'race') {
		spotGraphics = self.attachAsset('tire', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.8
		});
	} else if (gameDifficulty === 'infection') {
		spotGraphics = self.attachAsset('mutanttree', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.6
		});
	} else {
		spotGraphics = self.attachAsset('buildingSpot', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.4
		});
	}
	self.gridX = 0;
	self.gridY = 0;
	self.occupied = false;
	self.tower = null;
	self.down = function (x, y, obj) {
		if (!self.occupied && currentMode === 'building' && selectedTower !== null && essence >= towerCosts[selectedTower]) {
			self.buildTower(selectedTower);
		}
	};
	self.buildTower = function (towerType) {
		var tower;
		if (towerType === 'thorn') {
			tower = new ThornTower();
		} else if (towerType === 'shroom') {
			tower = new ShroomTower();
		} else if (towerType === 'flame') {
			tower = new FlameTower();
		} else if (towerType === 'healing') {
			tower = new FarmTower();
		}
		if (tower) {
			tower.x = self.x;
			tower.y = self.y;
			tower.gridX = self.gridX;
			tower.gridY = self.gridY;
			game.addChild(tower);
			towers.push(tower);
			essence -= towerCosts[towerType];
			updateEssenceText();
			self.occupied = true;
			self.tower = tower;
			LK.getSound('towerPlaced').play();
		}
	};
	return self;
});
var Car = Container.expand(function () {
	var self = Container.call(this);
	var carGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFF3300,
		// Reddish tint for car
		scaleX: 1.3,
		scaleY: 0.6 // Low and wide like a car
	});
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.maxHealth = 50;
	self.health = self.maxHealth;
	self.value = 10; // Essence value when defeated
	self.pathIndex = 0;
	self.alive = true;
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Follow path
		if (self.pathIndex < path.length) {
			var targetPoint = path[self.pathIndex];
			var dx = targetPoint.x - self.x;
			var dy = targetPoint.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// If near target point, move to next point
			if (distance < 20) {
				self.pathIndex++;
				// If reached the end of path (HeartTree)
				if (self.pathIndex >= path.length) {
					heartTree.takeDamage(10);
					self.alive = false;
					return;
				}
			} else {
				// Move towards current target point
				var angle = Math.atan2(dy, dx);
				self.x += Math.cos(angle) * self.speed;
				self.y += Math.sin(angle) * self.speed;
			}
		}
	};
	// Add a static method to Enemy to use for inheritance
	Enemy.prototype.update = function () {
		if (!this.alive) {
			return;
		}
		// Follow path
		if (this.pathIndex < path.length) {
			var targetPoint = path[this.pathIndex];
			var dx = targetPoint.x - this.x;
			var dy = targetPoint.y - this.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// If near target point, move to next point
			if (distance < 20) {
				this.pathIndex++;
				// If reached the end of path (HeartTree)
				if (this.pathIndex >= path.length) {
					heartTree.takeDamage(10);
					this.alive = false;
					return;
				}
			} else {
				// Move towards current target point
				var angle = Math.atan2(dy, dx);
				this.x += Math.cos(angle) * this.speed;
				this.y += Math.sin(angle) * this.speed;
			}
		}
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			self.die();
		} else {
			// Flash enemy when hit
			LK.effects.flashObject(self, 0xFF0000, 200);
		}
	};
	self.die = function () {
		self.alive = false;
		// Drop essence
		var essenceObj = new Essence();
		essenceObj.value = self.value;
		essenceObj.x = self.x;
		essenceObj.y = self.y;
		game.addChild(essenceObj);
		essenceItems.push(essenceObj);
		// Increase score
		LK.setScore(LK.getScore() + self.value);
		scoreTxt.setText(LK.getScore());
		LK.getSound('enemyDeath').play();
	};
	return self;
});
var ToxicBlobEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var blobGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x80FF80,
		// Light green tint
		scaleX: 1.4,
		scaleY: 1.4
	});
	self.speed = 1.3;
	self.maxHealth = 140;
	self.health = self.maxHealth;
	self.value = 30;
	// Override die method to spawn smaller toxic enemies
	self.die = function () {
		self.alive = false;
		// Spawn smaller toxic enemies
		for (var i = 0; i < 3; i++) {
			var smallToxic = new PoisonEnemy();
			// Make it smaller
			smallToxic.scale.set(0.7, 0.7);
			// Reduce stats for smaller version
			smallToxic.maxHealth = 30;
			smallToxic.health = smallToxic.maxHealth;
			smallToxic.speed = 2.5;
			smallToxic.value = 8;
			smallToxic.pathIndex = self.pathIndex;
			// Position with slight offset
			smallToxic.x = self.x + (Math.random() * 60 - 30);
			smallToxic.y = self.y + (Math.random() * 60 - 30);
			game.addChild(smallToxic);
			enemies.push(smallToxic);
			enemiesRemaining++;
		}
		// Create explosion effect
		var explosion = LK.getAsset('projectile', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y,
			tint: 0x00FF00,
			scaleX: 2,
			scaleY: 2
		});
		game.addChild(explosion);
		// Animate explosion
		tween(explosion, {
			alpha: 0,
			scaleX: 3,
			scaleY: 3
		}, {
			duration: 400,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Drop essence
		var essenceObj = new Essence();
		essenceObj.value = self.value;
		essenceObj.x = self.x;
		essenceObj.y = self.y;
		game.addChild(essenceObj);
		essenceItems.push(essenceObj);
		// Increase score
		LK.setScore(LK.getScore() + self.value);
		scoreTxt.setText(LK.getScore());
		LK.getSound('enemyDeath').play();
	};
	return self;
});
var TankEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var tankGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x666666,
		// Grey tint for tank enemies
		scaleX: 1.4,
		scaleY: 1.4 // Larger
	});
	self.speed = 1; // Slower
	self.maxHealth = 120; // Higher health
	self.health = self.maxHealth;
	self.value = 25; // Higher value
	return self;
});
var SplitEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var splitGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFF6347,
		// Tomato red for split enemies
		scaleX: 1.3,
		scaleY: 1.3
	});
	self.speed = 1.5;
	self.maxHealth = 70;
	self.health = self.maxHealth;
	self.value = 12;
	self.splitCount = 2; // Number of smaller enemies to spawn when killed
	self.size = 'large'; // Size tracking for spawned children
	// Override die method to create smaller enemies when killed
	self.die = function () {
		self.alive = false;
		// Only split if this is the original large enemy
		if (self.size === 'large') {
			// Spawn smaller enemies
			for (var i = 0; i < self.splitCount; i++) {
				var smallEnemy = new SplitEnemy();
				// Make it smaller
				smallEnemy.scale.set(0.6, 0.6);
				// Reduce stats for smaller version
				smallEnemy.size = 'small';
				smallEnemy.maxHealth = 25;
				smallEnemy.health = smallEnemy.maxHealth;
				smallEnemy.speed = 2.2;
				smallEnemy.value = 8;
				smallEnemy.pathIndex = self.pathIndex;
				// Position with slight offset
				smallEnemy.x = self.x + (Math.random() * 60 - 30);
				smallEnemy.y = self.y + (Math.random() * 60 - 30);
				game.addChild(smallEnemy);
				enemies.push(smallEnemy);
				enemiesRemaining++;
			}
		}
		// Create explosion effect
		var explosion = LK.getAsset('projectile', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y,
			tint: 0xFF4500,
			scaleX: 2,
			scaleY: 2
		});
		game.addChild(explosion);
		// Animate explosion
		tween(explosion, {
			alpha: 0,
			scaleX: 3,
			scaleY: 3
		}, {
			duration: 300,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Drop essence
		var essenceObj = new Essence();
		essenceObj.value = self.value;
		essenceObj.x = self.x;
		essenceObj.y = self.y;
		game.addChild(essenceObj);
		essenceItems.push(essenceObj);
		// Increase score
		LK.setScore(LK.getScore() + self.value);
		scoreTxt.setText(LK.getScore());
		LK.getSound('enemyDeath').play();
	};
	return self;
});
var SpeedyEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var speedyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFFFF00,
		// Yellow tint for speedy enemies
		scaleX: 0.8,
		scaleY: 1.2 // Tall and thin
	});
	self.speed = 4; // Much faster
	self.maxHealth = 30; // Lower health
	self.health = self.maxHealth;
	self.value = 15; // Slightly higher value
	return self;
});
var RaceEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var raceGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFF5500,
		// Orange-red tint for race enemies
		scaleX: 1.2,
		scaleY: 0.5 // Low and wide like a race car
	});
	self.speed = 6; // Very fast
	self.maxHealth = 25; // Lower health
	self.health = self.maxHealth;
	self.value = 20;
	self.exhaustCounter = 0;
	// Override update to add exhaust particle effect
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Call parent update for movement
		Enemy.prototype.update.call(self);
		// Create exhaust particle effect every few ticks
		self.exhaustCounter++;
		if (self.exhaustCounter >= 5) {
			self.exhaustCounter = 0;
			var exhaust = LK.getAsset('projectile', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: self.x - Math.cos(Math.atan2(path[self.pathIndex].y - self.y, path[self.pathIndex].x - self.x)) * 30,
				y: self.y - Math.sin(Math.atan2(path[self.pathIndex].y - self.y, path[self.pathIndex].x - self.x)) * 30,
				tint: 0x888888,
				scaleX: 0.5,
				scaleY: 0.5,
				alpha: 0.7
			});
			game.addChild(exhaust);
			// Animate exhaust
			tween(exhaust, {
				alpha: 0,
				scaleX: 0.1,
				scaleY: 0.1
			}, {
				duration: 300,
				onFinish: function onFinish() {
					exhaust.destroy();
				}
			});
		}
	};
	return self;
});
var PoisonEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var poisonGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x00FF00,
		// Green tint for poison enemies
		scaleX: 1.1,
		scaleY: 1.1
	});
	self.speed = 1.8;
	self.maxHealth = 80;
	self.health = self.maxHealth;
	self.value = 20;
	self.lastShotTime = 0;
	self.shotInterval = 3; // Seconds between shots
	// Override update to add shooting behavior
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Call parent update method for movement
		Enemy.prototype.update.call(self);
		// Add shooting behavior
		var currentTime = LK.ticks / 60;
		if (currentTime - self.lastShotTime >= self.shotInterval) {
			self.lastShotTime = currentTime;
			self.shootProjectile();
		}
	};
	self.shootProjectile = function () {
		// Create a poison projectile aimed at heart tree
		var projectile = new Projectile();
		projectile.x = self.x;
		projectile.y = self.y;
		projectile.damage = 5;
		projectile.speed = 8;
		projectile.target = heartTree;
		// Make it green
		projectile.getChildAt(0).tint = 0x00FF00;
		game.addChild(projectile);
		// Visual effect
		LK.effects.flashObject(self, 0x00FF00, 200);
	};
	return self;
});
var FlyingEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var flyingGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x9370DB,
		// Purple tint for flying enemies
		scaleX: 0.9,
		scaleY: 0.6 // Flatter shape
	});
	self.speed = 3;
	self.maxHealth = 40;
	self.health = self.maxHealth;
	self.value = 18;
	self.flyingMode = true;
	// Override the update method to go directly to heart tree
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Flying enemies ignore the path and go straight for the heart tree
		var dx = heartTree.x - self.x;
		var dy = heartTree.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		// If near heart tree, attack it
		if (distance < 20) {
			heartTree.takeDamage(15);
			self.alive = false;
			return;
		}
		// Move towards heart tree
		var angle = Math.atan2(dy, dx);
		self.x += Math.cos(angle) * self.speed;
		self.y += Math.sin(angle) * self.speed;
		// Add a slight wave pattern to flight
		self.y += Math.sin(LK.ticks / 10) * 0.5;
	};
	return self;
});
var BossEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with boss graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var bossGraphics = self.attachAsset('bossEnemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.8,
		// Make boss bigger
		scaleY: 1.8 // Make boss bigger
	});
	self.speed = 1.2;
	self.maxHealth = 300 + currentWave * 30;
	self.health = self.maxHealth;
	self.value = 100 + currentWave * 15;
	self.lastAttackTime = 0;
	self.attackCooldown = 3; // seconds between special attacks
	// Override update method to add special attacks
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Call parent update for movement
		Enemy.prototype.update.call(self);
		// Special attacks
		var currentTime = LK.ticks / 60;
		if (currentTime - self.lastAttackTime >= self.attackCooldown) {
			self.lastAttackTime = currentTime;
			self.specialAttack();
		}
		// Pulsate effect
		var pulse = 1 + Math.sin(LK.ticks / 15) * 0.1;
		self.scale.set(1.8 * pulse, 1.8 * pulse);
	};
	// Special attack based on boss wave level
	self.specialAttack = function () {
		// Boss becomes more dangerous in later waves
		var attackType = Math.floor(Math.random() * 3);
		// Flash effect for attack
		LK.effects.flashObject(self, 0xFF0000, 300);
		if (attackType === 0) {
			// Projectile burst attack
			var projectileCount = 8;
			for (var i = 0; i < projectileCount; i++) {
				var angle = i / projectileCount * Math.PI * 2;
				var projectile = new Projectile();
				projectile.x = self.x;
				projectile.y = self.y;
				projectile.damage = 8;
				// Set a fixed position as target based on angle
				var targetDummy = {
					x: self.x + Math.cos(angle) * 500,
					y: self.y + Math.sin(angle) * 500,
					alive: true
				};
				projectile.target = targetDummy;
				// Give projectile red color
				projectile.getChildAt(0).tint = 0xFF0000;
				game.addChild(projectile);
			}
		} else if (attackType === 1) {
			// Spawn minions
			var minionCount = 2 + Math.floor(currentWave / 5);
			for (var i = 0; i < minionCount; i++) {
				var minion = new SpeedyEnemy();
				minion.x = self.x;
				minion.y = self.y;
				minion.pathIndex = self.pathIndex;
				minion.maxHealth = 20;
				minion.health = minion.maxHealth;
				minion.speed = 5;
				minion.value = 5;
				// Make minions smaller
				minion.scale.set(0.7, 0.7);
				game.addChild(minion);
				enemies.push(minion);
				enemiesRemaining++;
			}
		} else {
			// Heal self
			var healAmount = Math.min(self.maxHealth - self.health, self.maxHealth * 0.1);
			if (healAmount > 0) {
				self.health += healAmount;
				// Create healing effect
				var healEffect = new Text2("+" + Math.floor(healAmount), {
					size: 40,
					fill: 0x00FF00
				});
				healEffect.anchor.set(0.5, 0.5);
				healEffect.x = self.x;
				healEffect.y = self.y - 50;
				game.addChild(healEffect);
				// Animate healing text
				tween(healEffect, {
					alpha: 0,
					y: healEffect.y - 50
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						healEffect.destroy();
					}
				});
			}
		}
	};
	// Override takeDamage to get enraged at low health
	self.takeDamage = function (amount) {
		self.health -= amount;
		// Enrage when below 30% health
		if (self.health <= self.maxHealth * 0.3 && self.speed < 1.8) {
			self.speed *= 1.5; // Move faster
			self.attackCooldown *= 0.6; // Attack more often
			// Visual effect for enrage
			LK.effects.flashObject(self, 0xFF0000, 1000);
			// Create enrage message
			var enrageText = new Text2("BOSS ENRAGED!", {
				size: 70,
				fill: 0xFF0000
			});
			enrageText.anchor.set(0.5, 0.5);
			enrageText.x = 2048 / 2;
			enrageText.y = 2732 / 2;
			game.addChild(enrageText);
			// Animate message
			tween(enrageText, {
				alpha: 0,
				scaleX: 2,
				scaleY: 2
			}, {
				duration: 1500,
				onFinish: function onFinish() {
					enrageText.destroy();
				}
			});
		}
		if (self.health <= 0) {
			self.die();
		} else {
			// Flash when hit
			LK.effects.flashObject(self, 0xFF0000, 200);
		}
	};
	return self;
});
var InfectionBossEnemy = BossEnemy.expand(function () {
	var self = BossEnemy.call(this);
	// Replace boss graphics with infected version
	self.removeChildAt(0); // Remove default boss graphics
	var bossGraphics = self.attachAsset('bossEnemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.8,
		scaleY: 1.8,
		tint: 0x00FF00 // Green tint for infection
	});
	// Override special attack to be infection-themed
	self.specialAttack = function () {
		// Flash effect for attack
		LK.effects.flashObject(self, 0x00FF00, 300);
		var attackType = Math.floor(Math.random() * 3);
		if (attackType === 0) {
			// Toxic cloud attack
			var cloudCount = 3 + Math.floor(currentWave / 7);
			for (var i = 0; i < cloudCount; i++) {
				var angle = i / cloudCount * Math.PI * 2;
				var distance = 200 + Math.random() * 300;
				var cloudX = self.x + Math.cos(angle) * distance;
				var cloudY = self.y + Math.sin(angle) * distance;
				var toxicCloud = LK.getAsset('projectile', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: cloudX,
					y: cloudY,
					tint: 0x00FF00,
					scaleX: 3,
					scaleY: 3,
					alpha: 0.7
				});
				game.addChild(toxicCloud);
				// Animate toxic cloud
				tween(toxicCloud, {
					alpha: 0,
					scaleX: 5,
					scaleY: 5
				}, {
					duration: 4000,
					onFinish: function onFinish() {
						toxicCloud.destroy();
					}
				});
				// Damage anything near the cloud
				var checkCloud = LK.setInterval(function (cloudPos) {
					return function () {
						// Check for guardian in range
						if (guardian) {
							var dx = guardian.x - cloudPos.x;
							var dy = guardian.y - cloudPos.y;
							var distance = Math.sqrt(dx * dx + dy * dy);
							if (distance < 150) {
								// Damage the heart tree
								heartTree.takeDamage(2);
								// Visual effect
								LK.effects.flashObject(guardian, 0x00FF00, 100);
							}
						}
					};
				}({
					"x": cloudX,
					"y": cloudY
				}), 500);
				// Clear interval when cloud is gone
				LK.setTimeout(function (interval) {
					return function () {
						LK.clearInterval(interval);
					};
				}(checkCloud), 4000);
			}
		} else if (attackType === 1) {
			// Spawn infection minions
			var minionCount = 2 + Math.floor(currentWave / 6);
			for (var i = 0; i < minionCount; i++) {
				var minion;
				if (Math.random() < 0.5) {
					minion = new AcidEnemy();
				} else {
					minion = new PoisonEnemy();
				}
				minion.x = self.x;
				minion.y = self.y;
				minion.pathIndex = self.pathIndex;
				minion.maxHealth = 40;
				minion.health = minion.maxHealth;
				// Make minions smaller
				minion.scale.set(0.8, 0.8);
				game.addChild(minion);
				enemies.push(minion);
				enemiesRemaining++;
			}
		} else {
			// Viral infection - heals self and damages heart tree
			var healAmount = Math.min(self.maxHealth - self.health, self.maxHealth * 0.15);
			if (healAmount > 0) {
				self.health += healAmount;
				// Create healing effect
				var healEffect = new Text2("+" + Math.floor(healAmount), {
					size: 40,
					fill: 0x00FF00
				});
				healEffect.anchor.set(0.5, 0.5);
				healEffect.x = self.x;
				healEffect.y = self.y - 50;
				game.addChild(healEffect);
				// Animate healing text
				tween(healEffect, {
					alpha: 0,
					y: healEffect.y - 50
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						healEffect.destroy();
					}
				});
			}
			// Damage heart tree directly
			heartTree.takeDamage(5);
			// Visual effect showing infection spread to heart tree
			var infectionLine = new Container();
			for (var i = 0; i < 10; i++) {
				var segment = LK.getAsset('projectile', {
					anchorX: 0.5,
					anchorY: 0.5,
					tint: 0x00FF00,
					scaleX: 0.5,
					scaleY: 0.5,
					alpha: 0.7
				});
				segment.x = self.x + (heartTree.x - self.x) * (i / 10);
				segment.y = self.y + (heartTree.y - self.y) * (i / 10);
				infectionLine.addChild(segment);
			}
			game.addChild(infectionLine);
			// Animate and remove infection line
			LK.setTimeout(function () {
				infectionLine.destroy();
			}, 1000);
		}
	};
	return self;
});
var AcidEnemy = Enemy.expand(function () {
	var self = Enemy.call(this);
	// Replace with custom graphics
	self.removeChildAt(0); // Remove default enemy graphics
	var acidGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x00AA00,
		// Darker green tint for acid enemies
		scaleX: 1.2,
		scaleY: 1.2
	});
	self.speed = 1.6;
	self.maxHealth = 90;
	self.health = self.maxHealth;
	self.value = 22;
	self.lastAcidTime = 0;
	self.acidInterval = 2; // Seconds between acid puddles
	// Override update to add acid trail
	self.update = function () {
		if (!self.alive) {
			return;
		}
		// Call parent update method for movement
		Enemy.prototype.update.call(self);
		// Add acid trail behavior
		var currentTime = LK.ticks / 60;
		if (currentTime - self.lastAcidTime >= self.acidInterval) {
			self.lastAcidTime = currentTime;
			self.dropAcid();
		}
	};
	self.dropAcid = function () {
		// Create an acid puddle that damages the guardian
		var acid = LK.getAsset('projectile', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: self.x,
			y: self.y,
			tint: 0x00FF00,
			scaleX: 1.8,
			scaleY: 0.4,
			alpha: 0.7
		});
		game.addChild(acid);
		// Animate acid puddle
		tween(acid, {
			alpha: 0,
			scaleX: 2.5,
			scaleY: 0.2
		}, {
			duration: 5000,
			onFinish: function onFinish() {
				acid.destroy();
			}
		});
		// Check if guardian is in acid puddle
		var checkAcid = LK.setInterval(function () {
			if (guardian) {
				var dx = guardian.x - acid.x;
				var dy = guardian.y - acid.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance < 60) {
					// Damage the heart tree if guardian is in acid
					heartTree.takeDamage(1);
					// Visual effect on guardian
					LK.effects.flashObject(guardian, 0x00FF00, 200);
				}
			}
		}, 500);
		// Clear interval when acid is gone
		LK.setTimeout(function () {
			LK.clearInterval(checkAcid);
		}, 5000);
	};
	return self;
});
var Essence = Container.expand(function () {
	var self = Container.call(this);
	var essenceGraphics = self.attachAsset('essence', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 10;
	self.lifeTime = 10; // seconds
	self.creationTime = LK.ticks / 60;
	self.collected = false;
	self.update = function () {
		if (self.collected) {
			return;
		}
		// Check if guardian is close enough to collect
		var dx = guardian.x - self.x;
		var dy = guardian.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 80) {
			self.collect();
			return;
		}
		// Check if timed out
		var currentTime = LK.ticks / 60;
		if (currentTime - self.creationTime > self.lifeTime) {
			self.collected = true;
		}
		// Pulse animation
		var pulseFactor = 1 + Math.sin(LK.ticks / 20) * 0.1;
		self.scale.set(pulseFactor, pulseFactor);
	};
	self.collect = function () {
		essence += self.value;
		updateEssenceText();
		self.collected = true;
		LK.getSound('essenceCollected').play();
		// Animate collection
		tween(self, {
			alpha: 0,
			scaleX: 2,
			scaleY: 2
		}, {
			duration: 300,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});
var Guardian = Container.expand(function () {
	var self = Container.call(this);
	var guardianGraphics = self.attachAsset('guardian', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 7;
	self.targetX = null;
	self.targetY = null;
	self.moving = false;
	self.update = function () {
		if (self.moving && self.targetX !== null && self.targetY !== null) {
			var dx = self.targetX - self.x;
			var dy = self.targetY - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// If near target, stop moving
			if (distance < 10) {
				self.moving = false;
				self.targetX = null;
				self.targetY = null;
			} else {
				// Move towards target
				var angle = Math.atan2(dy, dx);
				var nextX = self.x + Math.cos(angle) * self.speed;
				var nextY = self.y + Math.sin(angle) * self.speed;
				// Check if the next position is valid
				if (isPositionValid(nextX, nextY)) {
					self.x = nextX;
					self.y = nextY;
				} else {
					self.moving = false;
				}
			}
		}
	};
	self.moveTo = function (x, y) {
		if (isPositionValid(x, y)) {
			self.targetX = x;
			self.targetY = y;
			self.moving = true;
		}
	};
	return self;
});
var HeartTree = Container.expand(function () {
	var self = Container.call(this);
	var treeGraphics;
	if (gameDifficulty === 'race') {
		treeGraphics = self.attachAsset('finishline', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	} else if (gameDifficulty === 'infection') {
		treeGraphics = self.attachAsset('oldbuilding', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	} else {
		treeGraphics = self.attachAsset('heartTree', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	}
	self.maxHealth = 100;
	self.health = self.maxHealth;
	self.takeDamage = function (amount) {
		self.health -= amount;
		updateHealthBar();
		LK.getSound('heartTreeDamage').play();
		LK.effects.flashObject(self, 0xFF0000, 300);
		if (self.health <= 0) {
			// Game over
			LK.showGameOver();
			// Update high score if needed
			if (LK.getScore() > storage.highScore) {
				storage.highScore = LK.getScore();
			}
		}
	};
	return self;
});
var PathTile = Container.expand(function () {
	var self = Container.call(this);
	var pathGraphics;
	if (gameDifficulty === 'race') {
		pathGraphics = self.attachAsset('racetrack', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.9
		});
	} else if (gameDifficulty === 'infection') {
		pathGraphics = self.attachAsset('acidspill', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.9
		});
	} else {
		pathGraphics = self.attachAsset('path', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.8
		});
	}
	self.gridX = 0;
	self.gridY = 0;
	return self;
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileGraphics = self.attachAsset('projectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 12;
	self.damage = 10;
	self.target = null;
	self.alive = true;
	self.update = function () {
		if (!self.target || !self.target.alive) {
			self.alive = false;
			return;
		}
		var dx = self.target.x - self.x;
		var dy = self.target.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 20) {
			// Hit target
			if (typeof self.target.takeDamage === 'function') {
				self.target.takeDamage(self.damage);
			}
			self.alive = false;
			return;
		}
		// Move towards target
		var angle = Math.atan2(dy, dx);
		self.x += Math.cos(angle) * self.speed;
		self.y += Math.sin(angle) * self.speed;
	};
	return self;
});
var SpawnPoint = Container.expand(function () {
	var self = Container.call(this);
	var spawnGraphics;
	if (gameDifficulty === 'race') {
		spawnGraphics = self.attachAsset('car', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	} else if (gameDifficulty === 'infection') {
		spawnGraphics = self.attachAsset('acidbarrel', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	} else {
		spawnGraphics = self.attachAsset('spawnPoint', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	}
	self.active = true;
	return self;
});
var TitleScreen = Container.expand(function () {
	var self = Container.call(this);
	// Background overlay for title screen
	var overlay = self.attachAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 2048,
		height: 2732,
		tint: 0x122112,
		alpha: 0.8
	});
	// Game title
	self.title = new Text2('Forest Defender', {
		size: 180,
		fill: 0x83de44
	});
	self.title.anchor.set(0.5, 0.5);
	self.title.y = -500;
	self.addChild(self.title);
	// Subtitle
	self.subtitle = new Text2('Protect the Heart Tree!', {
		size: 80,
		fill: 0xFFFFFF
	});
	self.subtitle.anchor.set(0.5, 0.5);
	self.subtitle.y = -350;
	self.addChild(self.subtitle);
	// Instructions
	self.instructions = new Text2('Build towers, collect essence\nand survive enemy waves', {
		size: 60,
		fill: 0xCCCCCC
	});
	self.instructions.anchor.set(0.5, 0.5);
	self.instructions.y = -150;
	self.addChild(self.instructions);
	// Create difficulty buttons
	self.easyBtn = new Container();
	var easyBtnBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 100,
		tint: 0x00AA00 // Green for easy
	});
	self.easyBtn.addChild(easyBtnBg);
	var easyBtnText = new Text2('EASY', {
		size: 60,
		fill: 0xFFFFFF
	});
	easyBtnText.anchor.set(0.5, 0.5);
	self.easyBtn.addChild(easyBtnText);
	self.easyBtn.y = 50;
	self.addChild(self.easyBtn);
	self.normalBtn = new Container();
	var normalBtnBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 100,
		tint: 0x0088AA // Blue for normal
	});
	self.normalBtn.addChild(normalBtnBg);
	var normalBtnText = new Text2('NORMAL', {
		size: 60,
		fill: 0xFFFFFF
	});
	normalBtnText.anchor.set(0.5, 0.5);
	self.normalBtn.addChild(normalBtnText);
	self.normalBtn.y = 170;
	self.addChild(self.normalBtn);
	self.hardBtn = new Container();
	var hardBtnBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 100,
		tint: 0xAA0000 // Red for hard
	});
	self.hardBtn.addChild(hardBtnBg);
	var hardBtnText = new Text2('HARD', {
		size: 60,
		fill: 0xFFFFFF
	});
	hardBtnText.anchor.set(0.5, 0.5);
	self.hardBtn.addChild(hardBtnText);
	self.hardBtn.y = 290;
	self.addChild(self.hardBtn);
	// Race mode button
	self.raceBtn = new Container();
	var raceBtnBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 100,
		tint: 0xFF5500 // Orange for race
	});
	self.raceBtn.addChild(raceBtnBg);
	var raceBtnText = new Text2('RACE', {
		size: 60,
		fill: 0xFFFFFF
	});
	raceBtnText.anchor.set(0.5, 0.5);
	self.raceBtn.addChild(raceBtnText);
	self.raceBtn.y = 410;
	self.addChild(self.raceBtn);
	// Infection mode button
	self.infectionBtn = new Container();
	var infectionBtnBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 100,
		tint: 0x00AA00 // Green for infection
	});
	self.infectionBtn.addChild(infectionBtnBg);
	var infectionBtnText = new Text2('INFECTION', {
		size: 50,
		fill: 0xFFFFFF
	});
	infectionBtnText.anchor.set(0.5, 0.5);
	self.infectionBtn.addChild(infectionBtnText);
	self.infectionBtn.y = 530;
	self.addChild(self.infectionBtn);
	// High score display
	self.highScoreText = new Text2('High Score: ' + storage.highScore, {
		size: 50,
		fill: 0xFFD700
	});
	self.highScoreText.anchor.set(0.5, 0.5);
	self.highScoreText.y = 650; // Moved lower to make room for all difficulty buttons
	self.addChild(self.highScoreText);
	// Add pulsing animation to difficulty buttons
	self.update = function () {
		var pulseFactor = 1 + Math.sin(LK.ticks / 20) * 0.05;
		self.easyBtn.scale.set(pulseFactor, pulseFactor);
		self.normalBtn.scale.set(pulseFactor, pulseFactor);
		self.hardBtn.scale.set(pulseFactor, pulseFactor);
		self.raceBtn.scale.set(pulseFactor, pulseFactor);
		self.infectionBtn.scale.set(pulseFactor, pulseFactor);
	};
	// Difficulty button event handlers
	self.easyBtn.down = function () {
		// Set game difficulty to easy
		gameDifficulty = 'easy';
		// Create fade out effect
		tween(self, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				self.destroy();
				initGame();
			}
		});
	};
	self.normalBtn.down = function () {
		// Set game difficulty to normal
		gameDifficulty = 'normal';
		// Create fade out effect
		tween(self, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				self.destroy();
				initGame();
			}
		});
	};
	self.hardBtn.down = function () {
		// Set game difficulty to hard
		gameDifficulty = 'hard';
		// Create fade out effect
		tween(self, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				self.destroy();
				initGame();
			}
		});
	};
	self.raceBtn.down = function () {
		// Set game difficulty to race
		gameDifficulty = 'race';
		// Create fade out effect
		tween(self, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				self.destroy();
				initGame();
			}
		});
	};
	self.infectionBtn.down = function () {
		// Set game difficulty to infection
		gameDifficulty = 'infection';
		// Create fade out effect
		tween(self, {
			alpha: 0
		}, {
			duration: 800,
			onFinish: function onFinish() {
				self.destroy();
				initGame();
			}
		});
	};
	return self;
});
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var baseGraphics = self.attachAsset('towerBase', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gridX = 0;
	self.gridY = 0;
	self.range = 300;
	self.damage = 10;
	self.attackSpeed = 1; // attacks per second
	self.lastAttackTime = 0;
	self.level = 1;
	self.target = null;
	self.projectiles = [];
	self.findTarget = function () {
		var closestEnemy = null;
		var closestDistance = self.range;
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			var dx = enemy.x - self.x;
			var dy = enemy.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestEnemy = enemy;
			}
		}
		return closestEnemy;
	};
	self.attack = function () {
		if (!self.target || !self.target.alive) {
			self.target = self.findTarget();
		}
		if (self.target) {
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > self.range) {
				self.target = null;
				return;
			}
			var currentTime = LK.ticks / 60;
			if (currentTime - self.lastAttackTime >= 1 / self.attackSpeed) {
				self.lastAttackTime = currentTime;
				self.fireProjectile();
			}
		}
	};
	self.fireProjectile = function () {
		var projectile = new Projectile();
		projectile.damage = self.damage;
		projectile.target = self.target;
		projectile.x = self.x;
		projectile.y = self.y;
		game.addChild(projectile);
		self.projectiles.push(projectile);
		LK.getSound('projectileShot').play();
	};
	self.down = function (x, y, obj) {
		// If in delete mode, sell the tower
		if (currentMode === 'delete') {
			// Find the tower's type to determine sell value
			var towerType = '';
			if (self instanceof ThornTower) {
				towerType = 'thorn';
			} else if (self instanceof ShroomTower) {
				towerType = 'shroom';
			} else if (self instanceof FlameTower) {
				towerType = 'flame';
			} else if (self instanceof FarmTower) {
				towerType = 'healing';
			}
			// Add essence based on tower type
			essence += towerSellValues[towerType];
			updateEssenceText();
			// Find and mark the building spot as unoccupied
			for (var i = 0; i < buildingSpots.length; i++) {
				if (buildingSpots[i].gridX === self.gridX && buildingSpots[i].gridY === self.gridY) {
					buildingSpots[i].occupied = false;
					buildingSpots[i].tower = null;
					break;
				}
			}
			// Remove tower from towers array
			for (var i = 0; i < towers.length; i++) {
				if (towers[i] === self) {
					towers.splice(i, 1);
					break;
				}
			}
			// Show sell effect
			var sellEffect = new Text2("+" + towerSellValues[towerType], {
				size: 40,
				fill: 0xFFD700
			});
			sellEffect.anchor.set(0.5, 0.5);
			sellEffect.x = self.x;
			sellEffect.y = self.y;
			game.addChild(sellEffect);
			// Animate the effect
			tween(sellEffect, {
				alpha: 0,
				y: sellEffect.y - 50
			}, {
				duration: 1000,
				onFinish: function onFinish() {
					sellEffect.destroy();
				}
			});
			// Destroy the tower
			self.destroy();
		}
	};
	self.update = function () {
		self.attack();
		// Update projectiles
		for (var i = self.projectiles.length - 1; i >= 0; i--) {
			var projectile = self.projectiles[i];
			if (!projectile.alive) {
				projectile.destroy();
				self.projectiles.splice(i, 1);
			}
		}
	};
	return self;
});
var ThornTower = Tower.expand(function () {
	var self = Tower.call(this);
	var towerGraphics = self.attachAsset('thornTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -20 // Offset to position on base
	});
	self.range = 350;
	self.damage = 15;
	self.attackSpeed = 1.2;
	return self;
});
var ShroomTower = Tower.expand(function () {
	var self = Tower.call(this);
	var towerGraphics = self.attachAsset('shroomTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -20 // Offset to position on base
	});
	self.range = 250;
	self.damage = 25;
	self.attackSpeed = 0.8;
	return self;
});
var FlameTower = Tower.expand(function () {
	var self = Tower.call(this);
	// Remove default base and add custom base with red tint
	self.removeChildAt(0);
	var baseGraphics = self.attachAsset('towerBase', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFF8800
	});
	var towerGraphics = self.attachAsset('flameTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -20,
		// Offset to position on base
		tint: 0xFF3300
	});
	self.range = 200; // Short range
	self.damage = 8; // Lower damage per hit
	self.attackSpeed = 2.5; // Fast attack speed
	self.areaOfEffect = true; // This tower hits multiple enemies
	// Override the fireProjectile method for area attack
	self.fireProjectile = function () {
		// Find all enemies in range
		var hitEnemies = [];
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			var dx = enemy.x - self.x;
			var dy = enemy.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance <= self.range) {
				hitEnemies.push(enemy);
				// Visual effect - flame burst
				var flameBurst = LK.getAsset('projectile', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: enemy.x,
					y: enemy.y,
					tint: 0xFF4500,
					scaleX: 1.5,
					scaleY: 1.5
				});
				game.addChild(flameBurst);
				// Animate and remove flame effect
				tween(flameBurst, {
					alpha: 0,
					scaleX: 0.5,
					scaleY: 0.5
				}, {
					duration: 300,
					onFinish: function onFinish() {
						flameBurst.destroy();
					}
				});
				// Damage the enemy
				enemy.takeDamage(self.damage);
			}
		}
		if (hitEnemies.length > 0) {
			LK.getSound('projectileShot').play();
		}
	};
	return self;
});
var FarmTower = Tower.expand(function () {
	var self = Tower.call(this);
	// Remove default base and add custom base with gold tint
	self.removeChildAt(0);
	var baseGraphics = self.attachAsset('towerBase', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFFD700
	});
	var towerGraphics = self.attachAsset('farmTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: -20
		// Offset to position on base
	});
	self.range = 280;
	self.incomeAmount = 25; // Base income per wave
	self.level = 1;
	// Override the attack method to do nothing - this tower doesn't attack
	self.attack = function () {
		// Instead, just pulsate to show it's active
		if (LK.ticks % 60 == 0) {
			// Visual effect on self - gold coins visual
			var coinEffect = LK.getAsset('essence', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: self.x + (Math.random() * 40 - 20),
				y: self.y + (Math.random() * 40 - 20),
				tint: 0xFFD700,
				alpha: 0.7
			});
			game.addChild(coinEffect);
			// Animate and remove coin effect
			tween(coinEffect, {
				alpha: 0,
				y: coinEffect.y - 50,
				scaleX: 0.5,
				scaleY: 0.5
			}, {
				duration: 800,
				onFinish: function onFinish() {
					coinEffect.destroy();
				}
			});
		}
	};
	// Get income amount based on level
	self.getIncomePerWave = function () {
		return Math.floor(self.incomeAmount * (1 + (self.level - 1) * 0.5));
	};
	// Override the fireProjectile to do nothing
	self.fireProjectile = function () {};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2E5C2E // Forest green
});

/**** 
* Game Code
****/ 
// Game variables
var gameDifficulty = 'normal'; // Default difficulty: 'normal', 'easy', 'hard', or 'race'
var deleteBtn = new Container(); // Add delete button container
function _slicedToArray(r, e) {
	return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
}
function _nonIterableRest() {
	throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _unsupportedIterableToArray(r, a) {
	if (r) {
		if ("string" == typeof r) {
			return _arrayLikeToArray(r, a);
		}
		var t = {}.toString.call(r).slice(8, -1);
		return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
	}
}
function _arrayLikeToArray(r, a) {
	(null == a || a > r.length) && (a = r.length);
	for (var e = 0, n = Array(a); e < a; e++) {
		n[e] = r[e];
	}
	return n;
}
function _iterableToArrayLimit(r, l) {
	var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
	if (null != t) {
		var e,
			n,
			i,
			u,
			a = [],
			f = !0,
			o = !1;
		try {
			if (i = (t = t.call(r)).next, 0 === l) {
				if (Object(t) !== t) {
					return;
				}
				f = !1;
			} else {
				for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0) {
					;
				}
			}
		} catch (r) {
			o = !0, n = r;
		} finally {
			try {
				if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) {
					return;
				}
			} finally {
				if (o) {
					throw n;
				}
			}
		}
		return a;
	}
}
function _arrayWithHoles(r) {
	if (Array.isArray(r)) {
		return r;
	}
}
var gridSize = 120;
var currentMode = 'guardian'; // 'guardian', 'building', or 'delete'
var selectedTower = 'thorn';
var essence = 100;
var currentWave = 0;
var waveInProgress = false;
var waveTimer = null;
var enemiesRemaining = 0;
var towers = [];
var enemies = [];
var essenceItems = [];
var buildingSpots = [];
var path = [];
var spawnPoints = [];
var guardian; // Reference to the guardian instance
var heartTree = null; // Reference to the heart tree instance
// Tower costs
var towerCosts = {
	'thorn': 50,
	'shroom': 100,
	'flame': 150,
	'healing': 200
};
// Tower sell values (will be calculated based on cost and level)
var towerSellValues = {
	'thorn': Math.floor(towerCosts['thorn'] * 0.7),
	'shroom': Math.floor(towerCosts['shroom'] * 0.7),
	'flame': Math.floor(towerCosts['flame'] * 0.7),
	'healing': Math.floor(towerCosts['healing'] * 0.7)
};
// Create UI elements
var scoreTxt = new Text2('0', {
	size: 70,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var essenceTxt = new Text2('💎 100', {
	size: 70,
	fill: 0x00FFFF
});
essenceTxt.anchor.set(0, 0);
essenceTxt.x = -250; // Move it away from the edge
LK.gui.topRight.addChild(essenceTxt);
var waveTxt = new Text2('Wave: 0', {
	size: 50,
	fill: 0xFFFFFF
});
waveTxt.anchor.set(1, 0);
LK.gui.topLeft.addChild(waveTxt);
// Position away from the top left corner where menu icon is
waveTxt.x = 150;
var healthBarBg = new Container();
var healthBarFill = new Container();
var healthBarTxt = new Text2('100/100', {
	size: 40,
	fill: 0xFFFFFF
});
healthBarTxt.anchor.set(0.5, 0.5);
// Setup health bar
function setupHealthBar() {
	// Background bar
	var healthBg = LK.getAsset('healthBarBg', {
		anchorX: 0,
		anchorY: 0,
		width: 300,
		height: 40
	});
	healthBarBg.addChild(healthBg);
	// Fill bar
	var healthFill = LK.getAsset('healthBar', {
		anchorX: 0,
		anchorY: 0,
		width: 300,
		height: 40
	});
	healthBarFill.addChild(healthFill);
	// Add to GUI
	LK.gui.bottom.addChild(healthBarBg);
	LK.gui.bottom.addChild(healthBarFill);
	LK.gui.bottom.addChild(healthBarTxt);
	// Position health bar
	healthBarBg.x = -150; // Center the healthbar
	healthBarFill.x = -150; // Center the healthbar fill
	healthBarTxt.x = 0; // Center the text
	healthBarBg.y = -80; // Position below start wave button (which is at -150)
	healthBarFill.y = -80; // Match background position
	healthBarTxt.y = -60; // Position text in middle of healthbar
}
// Update health bar
function updateHealthBar() {
	var healthPercent = heartTree.health / heartTree.maxHealth;
	healthBarFill.scale.x = healthPercent;
	healthBarTxt.setText(heartTree.health + '/' + heartTree.maxHealth);
	// Update color based on health percentage
	var fill = healthBarFill.getChildAt(0);
	if (healthPercent > 0.6) {
		fill.tint = 0x00FF00; // Green
	} else if (healthPercent > 0.3) {
		fill.tint = 0xFFFF00; // Yellow
	} else {
		fill.tint = 0xFF0000; // Red
	}
	// Flash effect when health is low
	if (healthPercent < 0.2 && LK.ticks % 60 < 30) {
		healthBarFill.alpha = 0.7;
	} else {
		healthBarFill.alpha = 1.0;
	}
}
// Create game mode buttons
var guardianBtn = new Container();
var buildBtn = new Container();
function setupModeButtons() {
	// Guardian mode button
	var guardianBtnBg = LK.getAsset('moveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	guardianBtn.addChild(guardianBtnBg);
	var guardianBtnTxt = new Text2('Move', {
		size: 30,
		fill: 0xFFFFFF
	});
	guardianBtnTxt.anchor.set(0.5, 0.5);
	guardianBtnTxt.y = 50;
	guardianBtn.addChild(guardianBtnTxt);
	// Building mode button
	var buildBtnBg = LK.getAsset('buildButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	buildBtn.addChild(buildBtnBg);
	var buildBtnTxt = new Text2('Build', {
		size: 30,
		fill: 0xFFFFFF
	});
	buildBtnTxt.anchor.set(0.5, 0.5);
	buildBtnTxt.y = 50;
	buildBtn.addChild(buildBtnTxt);
	// Delete button
	var deleteBtn = new Container();
	var deleteBtnBg = LK.getAsset('deleteButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	deleteBtn.addChild(deleteBtnBg);
	var deleteBtnTxt = new Text2('Delete', {
		size: 30,
		fill: 0xFFFFFF
	});
	deleteBtnTxt.anchor.set(0.5, 0.5);
	deleteBtnTxt.y = 50;
	deleteBtn.addChild(deleteBtnTxt);
	// Add to GUI
	LK.gui.bottomLeft.addChild(guardianBtn);
	LK.gui.bottomLeft.addChild(buildBtn);
	LK.gui.bottomLeft.addChild(deleteBtn);
	// Position buttons
	guardianBtn.x = 100;
	guardianBtn.y = -100;
	buildBtn.x = 220;
	buildBtn.y = -100;
	deleteBtn.x = 340;
	deleteBtn.y = -100;
	// Add event listeners
	guardianBtn.interactive = true;
	guardianBtn.down = function () {
		setGameMode('guardian');
	};
	buildBtn.interactive = true;
	buildBtn.down = function () {
		setGameMode('building');
	};
	deleteBtn.interactive = true;
	deleteBtn.down = function () {
		setGameMode('delete');
	};
	// Highlight current mode
	updateModeButtons();
}
// Create tower selection buttons
var thornBtn = new Container();
var shroomBtn = new Container();
var flameBtn = new Container();
var healingBtn = new Container();
function setupTowerButtons() {
	// Thorn tower button
	var thornBtnBg = LK.getAsset('thornTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	thornBtn.addChild(thornBtnBg);
	var thornBtnTxt = new Text2('50', {
		size: 30,
		fill: 0xFFFFFF
	});
	thornBtnTxt.anchor.set(0.5, 0.5);
	thornBtnTxt.y = 50;
	thornBtn.addChild(thornBtnTxt);
	// Shroom tower button
	var shroomBtnBg = LK.getAsset('shroomTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	shroomBtn.addChild(shroomBtnBg);
	var shroomBtnTxt = new Text2('100', {
		size: 30,
		fill: 0xFFFFFF
	});
	shroomBtnTxt.anchor.set(0.5, 0.5);
	shroomBtnTxt.y = 50;
	shroomBtn.addChild(shroomBtnTxt);
	// Flame tower button
	var flameBtnBg = LK.getAsset('flameTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80,
		tint: 0xFF3300
	});
	flameBtn.addChild(flameBtnBg);
	var flameBtnTxt = new Text2('150', {
		size: 30,
		fill: 0xFFFFFF
	});
	flameBtnTxt.anchor.set(0.5, 0.5);
	flameBtnTxt.y = 50;
	flameBtn.addChild(flameBtnTxt);
	// Farm tower button
	var healingBtnBg = LK.getAsset('farmTower', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 80
	});
	healingBtn.addChild(healingBtnBg);
	var healingBtnTxt = new Text2('200', {
		size: 30,
		fill: 0xFFFFFF
	});
	healingBtnTxt.anchor.set(0.5, 0.5);
	healingBtnTxt.y = 50;
	healingBtn.addChild(healingBtnTxt);
	// Add to GUI
	LK.gui.bottomRight.addChild(thornBtn);
	LK.gui.bottomRight.addChild(shroomBtn);
	LK.gui.bottomRight.addChild(flameBtn);
	LK.gui.bottomRight.addChild(healingBtn);
	// Position buttons
	thornBtn.x = -100;
	thornBtn.y = -100;
	shroomBtn.x = -220;
	shroomBtn.y = -100;
	flameBtn.x = -100;
	flameBtn.y = -200;
	healingBtn.x = -220;
	healingBtn.y = -200;
	// Add event listeners
	thornBtn.interactive = true;
	thornBtn.down = function () {
		if (currentMode === 'building') {
			selectTower('thorn');
		}
	};
	shroomBtn.interactive = true;
	shroomBtn.down = function () {
		if (currentMode === 'building' && storage.unlockedTowers.includes('shroom')) {
			selectTower('shroom');
		}
	};
	flameBtn.interactive = true;
	flameBtn.down = function () {
		if (currentMode === 'building' && storage.unlockedTowers.includes('flame')) {
			selectTower('flame');
		}
	};
	healingBtn.interactive = true;
	healingBtn.down = function () {
		if (currentMode === 'building' && storage.unlockedTowers.includes('healing')) {
			selectTower('healing');
		}
	};
	// If towers are not unlocked, gray them out
	if (!storage.unlockedTowers.includes('shroom')) {
		shroomBtn.alpha = 0.5;
	}
	if (!storage.unlockedTowers.includes('flame')) {
		flameBtn.alpha = 0.5;
	}
	if (!storage.unlockedTowers.includes('healing')) {
		healingBtn.alpha = 0.5;
	}
	// Highlight selected tower
	updateTowerButtons();
}
// Start wave button
var startWaveBtn = new Container();
function setupStartWaveButton() {
	var startWaveButtonBg = LK.getAsset('waveButton', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 200,
		height: 80
	});
	startWaveBtn.addChild(startWaveButtonBg);
	var startWaveBtnTxt = new Text2('Start Wave', {
		size: 40,
		fill: 0xFFFFFF
	});
	startWaveBtnTxt.anchor.set(0.5, 0.5);
	startWaveBtn.addChild(startWaveBtnTxt);
	// Add to GUI
	LK.gui.bottom.addChild(startWaveBtn);
	// Position button
	startWaveBtn.y = -150;
	// Pulsing animation for wave button when not in wave
	var pulseInterval = LK.setInterval(function () {
		if (!waveInProgress) {
			var pulseFactor = 1 + Math.sin(LK.ticks / 20) * 0.1;
			startWaveBtn.scale.set(pulseFactor, pulseFactor);
		} else {
			startWaveBtn.scale.set(1, 1);
		}
	}, 100);
	// Add event listener
	startWaveBtn.interactive = true;
	startWaveBtn.down = function () {
		if (!waveInProgress) {
			startWave();
		}
	};
}
function updateModeButtons() {
	guardianBtn.alpha = currentMode === 'guardian' ? 1.0 : 0.6;
	buildBtn.alpha = currentMode === 'building' ? 1.0 : 0.6;
	deleteBtn.alpha = currentMode === 'delete' ? 1.0 : 0.6;
}
function updateTowerButtons() {
	thornBtn.alpha = currentMode === 'building' && selectedTower === 'thorn' ? 1.0 : 0.6;
	shroomBtn.alpha = currentMode === 'building' && selectedTower === 'shroom' && storage.unlockedTowers.includes('shroom') ? 1.0 : 0.3;
	flameBtn.alpha = currentMode === 'building' && selectedTower === 'flame' && storage.unlockedTowers.includes('flame') ? 1.0 : 0.3;
	healingBtn.alpha = currentMode === 'building' && selectedTower === 'healing' && storage.unlockedTowers.includes('healing') ? 1.0 : 0.3;
}
function setGameMode(mode) {
	currentMode = mode;
	updateModeButtons();
	updateTowerButtons();
}
function selectTower(tower) {
	selectedTower = tower;
	updateTowerButtons();
}
function updateEssenceText() {
	essenceTxt.setText('💎 ' + essence);
	// Flash effect when essence is gained/lost
	LK.effects.flashObject(essenceTxt, 0x00FFFF, 300);
}
function createLevel() {
	// Clear any existing level elements
	for (var i = 0; i < buildingSpots.length; i++) {
		buildingSpots[i].destroy();
	}
	buildingSpots = [];
	path = [];
	spawnPoints = [];
	// Level dimensions (in grid cells)
	var levelWidth = 15;
	var levelHeight = 19;
	// Create a grid for the level
	var grid = [];
	for (var y = 0; y < levelHeight; y++) {
		grid[y] = [];
		for (var x = 0; x < levelWidth; x++) {
			grid[y][x] = 0; // 0 = empty
		}
	}
	// Define path through the level (1 = path)
	var pathCoords = [[0, 9], [1, 9], [2, 9], [3, 9], [4, 9], [5, 9], [6, 9], [6, 8], [6, 7], [6, 6], [6, 5], [7, 5], [8, 5], [9, 5], [9, 6], [9, 7], [9, 8], [9, 9], [9, 10], [9, 11], [8, 11], [7, 11], [6, 11], [5, 11], [4, 11], [4, 12], [4, 13], [4, 14], [4, 15], [5, 15], [6, 15], [7, 15], [8, 15], [9, 15], [10, 15], [11, 15], [11, 14], [11, 13], [11, 12], [11, 11], [11, 10], [11, 9], [11, 8], [11, 7], [12, 7], [13, 7], [14, 7]];
	for (var i = 0; i < pathCoords.length; i++) {
		var _pathCoords$i = _slicedToArray(pathCoords[i], 2),
			x = _pathCoords$i[0],
			y = _pathCoords$i[1];
		grid[y][x] = 1;
	}
	// Set spawn point (2 = spawn)
	grid[9][0] = 2;
	// Set heart tree location (3 = heart tree)
	grid[7][14] = 3;
	// Create level elements based on grid
	for (var y = 0; y < levelHeight; y++) {
		for (var x = 0; x < levelWidth; x++) {
			var gridValue = grid[y][x];
			var worldX = x * gridSize + gridSize / 2 + 174; // Center in grid cell with some offset
			var worldY = y * gridSize + gridSize / 2 + 150;
			if (gridValue === 1) {
				// Path tile
				var pathTile = new PathTile();
				pathTile.x = worldX;
				pathTile.y = worldY;
				pathTile.gridX = x;
				pathTile.gridY = y;
				game.addChild(pathTile);
				// Add to path array for enemy movement
				path.push(pathTile);
			} else if (gridValue === 2) {
				// Spawn point
				var spawnPoint = new SpawnPoint();
				spawnPoint.x = worldX;
				spawnPoint.y = worldY;
				game.addChild(spawnPoint);
				spawnPoints.push(spawnPoint);
				// Also add as first path point
				path.unshift(spawnPoint);
			} else if (gridValue === 3) {
				// Heart Tree
				heartTree = new HeartTree();
				heartTree.x = worldX;
				heartTree.y = worldY;
				game.addChild(heartTree);
			} else if (gridValue === 0) {
				// Check if adjacent to path (can build here)
				var adjacentToPath = false;
				// Check all adjacent cells
				var directions = [[-1, 0], [1, 0], [0, -1], [0, 1]];
				for (var _i = 0, _directions = directions; _i < _directions.length; _i++) {
					var dir = _directions[_i];
					var adjX = x + dir[0];
					var adjY = y + dir[1];
					if (adjX >= 0 && adjX < levelWidth && adjY >= 0 && adjY < levelHeight && grid[adjY][adjX] === 1) {
						adjacentToPath = true;
						break;
					}
				}
				if (adjacentToPath) {
					// Create building spot
					var spot = new BuildingSpot();
					spot.x = worldX;
					spot.y = worldY;
					spot.gridX = x;
					spot.gridY = y;
					game.addChild(spot);
					buildingSpots.push(spot);
				}
			}
		}
	}
	// Sort path from start to end
	path.sort(function (a, b) {
		return pathCoords.findIndex(function (coords) {
			return coords[0] === a.gridX && coords[1] === a.gridY;
		}) - pathCoords.findIndex(function (coords) {
			return coords[0] === b.gridX && coords[1] === b.gridY;
		});
	});
	// Create guardian
	guardian = new Guardian();
	guardian.x = path[Math.floor(path.length / 2)].x;
	guardian.y = path[Math.floor(path.length / 2)].y;
	game.addChild(guardian);
}
function startWave() {
	if (waveInProgress) {
		return;
	}
	currentWave++;
	waveTxt.setText('Wave: ' + currentWave);
	waveInProgress = true;
	startWaveBtn.alpha = 0.5;
	// Display wave start message
	var waveStartTxt = new Text2('Wave ' + currentWave + ' Starting!', {
		size: 80,
		fill: 0xFF8C00
	});
	waveStartTxt.anchor.set(0.5, 0.5);
	waveStartTxt.x = 2048 / 2;
	waveStartTxt.y = 2732 / 2;
	game.addChild(waveStartTxt);
	// Animate and remove wave start message
	tween(waveStartTxt, {
		alpha: 0,
		scaleX: 1.5,
		scaleY: 1.5
	}, {
		duration: 1500,
		onFinish: function onFinish() {
			waveStartTxt.destroy();
		}
	});
	// Calculate enemies for this wave
	var numEnemies = 5 + Math.floor(currentWave * 1.5);
	var hasBoss = currentWave % 5 === 0;
	enemiesRemaining = numEnemies + (hasBoss ? 1 : 0);
	LK.getSound('waveStart').play();
	// Spawn enemies periodically
	var enemiesSpawned = 0;
	waveTimer = LK.setInterval(function () {
		if (enemiesSpawned < numEnemies) {
			spawnEnemy(false);
			enemiesSpawned++;
		} else if (hasBoss && enemiesSpawned === numEnemies) {
			spawnEnemy(true); // Spawn boss
			enemiesSpawned++;
		} else {
			LK.clearInterval(waveTimer);
		}
	}, 1500);
}
function spawnEnemy(isBoss) {
	var enemy;
	// Apply difficulty multipliers
	var healthMultiplier = 1.0;
	var speedMultiplier = 1.0;
	var valueMultiplier = 1.0;
	// Handle race mode separately
	if (gameDifficulty === 'race') {
		if (isBoss) {
			enemy = new BossEnemy();
			// Make boss race-themed
			enemy.speed *= 1.5;
			enemy.maxHealth *= 0.8;
			enemy.health = enemy.maxHealth;
		} else {
			// In race mode, spawn mostly race enemies with some speedy enemies
			var raceRandom = Math.random();
			if (raceRandom < 0.7 || currentWave < 2) {
				// 70% chance of spawning race enemy
				enemy = new RaceEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 25 + currentWave * 3;
				enemy.health = enemy.maxHealth;
				enemy.speed = 6 + currentWave * 0.25; // Even faster with each wave
				enemy.value = 20 + currentWave * 2;
			} else if (raceRandom < 0.9) {
				// 20% chance of spawning speedy enemy in race mode
				enemy = new SpeedyEnemy();
				enemy.maxHealth = 30 + currentWave * 4;
				enemy.health = enemy.maxHealth;
				enemy.speed = 4.5 + currentWave * 0.2; // Faster than normal mode
				enemy.value = 15 + currentWave;
				// Special visual effects for race mode speedies
				enemy.getChildAt(0).tint = 0xFFAA00; // More orange than yellow
			} else {
				// 10% chance of flying enemy after wave 3
				if (currentWave >= 3) {
					enemy = new FlyingEnemy();
					enemy.maxHealth = 40 + currentWave * 4;
					enemy.health = enemy.maxHealth;
					enemy.speed = 4 + currentWave * 0.15; // Faster than normal mode
					enemy.value = 25 + currentWave;
					// Change color for race mode
					enemy.getChildAt(0).tint = 0xFF3300; // More reddish
				} else {
					// Fallback to race enemy if flying is not available yet
					enemy = new RaceEnemy();
					enemy.maxHealth = 25 + currentWave * 3;
					enemy.health = enemy.maxHealth;
					enemy.speed = 6 + currentWave * 0.25;
					enemy.value = 20 + currentWave * 2;
				}
			}
		}
	} else if (gameDifficulty === 'infection') {
		if (isBoss) {
			enemy = new InfectionBossEnemy();
			// Adjust boss for infection theme
			enemy.maxHealth = 350 + currentWave * 30;
			enemy.health = enemy.maxHealth;
		} else {
			// In infection mode, spawn mostly poison-based enemies
			var infectionRandom = Math.random();
			if (infectionRandom < 0.3 || currentWave < 2) {
				// Basic poison enemy
				enemy = new PoisonEnemy();
				// Scale with wave
				enemy.maxHealth = 80 + currentWave * 7;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1.8 + currentWave * 0.1;
				enemy.value = 20 + currentWave;
				// Faster shot interval
				enemy.shotInterval = Math.max(1.5, 3 - currentWave * 0.25);
			} else if (infectionRandom < 0.6) {
				// Acid enemy
				enemy = new AcidEnemy();
				// Scale with wave
				enemy.maxHealth = 90 + currentWave * 8;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1.6 + currentWave * 0.08;
				enemy.value = 22 + currentWave;
				// More frequent acid drops at higher waves
				enemy.acidInterval = Math.max(1.0, 2 - currentWave * 0.15);
			} else if (infectionRandom < 0.8 && currentWave >= 3) {
				// Toxic blob enemy spawns after wave 3
				enemy = new ToxicBlobEnemy();
				// Scale with wave
				enemy.maxHealth = 140 + currentWave * 10;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1.3 + currentWave * 0.06;
				enemy.value = 30 + currentWave * 1.5;
			} else if (infectionRandom < 0.9 && currentWave >= 4) {
				// Flying enemy with poison theme
				enemy = new FlyingEnemy();
				enemy.maxHealth = 40 + currentWave * 5;
				enemy.health = enemy.maxHealth;
				enemy.speed = 3 + currentWave * 0.12;
				enemy.value = 18 + currentWave;
				// Change color for infection theme
				enemy.getChildAt(0).tint = 0x00FF00; // Green tint
			} else {
				// Default to normal enemy with poison tint as fallback
				enemy = new Enemy();
				enemy.maxHealth = 50 + currentWave * 6;
				enemy.health = enemy.maxHealth;
				enemy.speed = 2 + currentWave * 0.1;
				enemy.value = 10 + currentWave;
				// Add green tint
				enemy.getChildAt(0).tint = 0x88FF88;
			}
		}
	} else {
		// Normal, Easy, Hard difficulties
		if (gameDifficulty === 'easy') {
			healthMultiplier = 0.8; // Enemies have less health
			speedMultiplier = 0.9; // Enemies move slower
			valueMultiplier = 1.2; // Enemies give more essence
		} else if (gameDifficulty === 'hard') {
			healthMultiplier = 1.3; // Enemies have more health
			speedMultiplier = 1.2; // Enemies move faster
			valueMultiplier = 0.8; // Enemies give less essence
		}
		if (isBoss) {
			enemy = new BossEnemy();
		} else {
			// Randomly choose enemy type based on wave progression
			var randomType = Math.random();
			if (currentWave >= 6 && randomType < 0.15) {
				// 15% chance of spawning flying enemy after wave 6
				enemy = new FlyingEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = Math.floor((40 + currentWave * 5) * healthMultiplier);
				enemy.health = enemy.maxHealth;
				enemy.speed = (3 + currentWave * 0.12) * speedMultiplier;
				enemy.value = Math.floor((18 + currentWave) * valueMultiplier);
			} else if (currentWave >= 7 && randomType < 0.3) {
				// 15% chance of spawning poison enemy after wave 7
				enemy = new PoisonEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 80 + currentWave * 8;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1.8 + currentWave * 0.08;
				enemy.value = 20 + currentWave;
				enemy.shotInterval = Math.max(1.5, 3 - currentWave * 0.2); // Shoot faster at higher waves
			} else if (currentWave >= 5 && randomType < 0.45) {
				// 15% chance of spawning split enemy after wave 5
				enemy = new SplitEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 70 + currentWave * 12;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1.5 + currentWave * 0.06;
				enemy.value = 12 + currentWave;
				enemy.splitCount = 2 + Math.floor(currentWave / 10); // More splits at higher waves, max 4
			} else if (currentWave >= 2 && randomType < 0.65) {
				// 20% chance of spawning speedy enemy after wave 2
				enemy = new SpeedyEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 30 + currentWave * 6;
				enemy.health = enemy.maxHealth;
				enemy.speed = 4 + currentWave * 0.15;
				enemy.value = 15 + currentWave;
			} else if (currentWave >= 4 && randomType < 0.8) {
				// 15% chance of spawning tank enemy after wave 4
				enemy = new TankEnemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 120 + currentWave * 15;
				enemy.health = enemy.maxHealth;
				enemy.speed = 1 + currentWave * 0.05;
				enemy.value = 25 + currentWave;
			} else {
				// Regular enemy
				enemy = new Enemy();
				// Scale difficulty with wave number
				enemy.maxHealth = 50 + currentWave * 10;
				enemy.health = enemy.maxHealth;
				enemy.speed = 2 + currentWave * 0.1;
				enemy.value = 10 + currentWave;
			}
		}
	}
	// Set initial position at spawn point
	var spawnPoint = spawnPoints[0];
	enemy.x = spawnPoint.x;
	enemy.y = spawnPoint.y;
	game.addChild(enemy);
	enemies.push(enemy);
	// Apply animation for spawning
	enemy.alpha = 0;
	enemy.scale.set(0.5, 0.5);
	tween(enemy, {
		alpha: 1,
		scaleX: 1,
		scaleY: 1
	}, {
		duration: 500
	});
}
function checkWaveComplete() {
	if (waveInProgress && enemies.length === 0 && enemiesRemaining === 0) {
		waveInProgress = false;
		startWaveBtn.alpha = 1.0;
		// Reward between waves
		var waveBonus = 50 + currentWave * 10;
		// Add farm tower income
		var farmIncome = 0;
		for (var i = 0; i < towers.length; i++) {
			if (towers[i] instanceof FarmTower) {
				var income = towers[i].getIncomePerWave();
				farmIncome += income;
				// Show visual effect for farm income
				var incomeTxt = new Text2("+" + income, {
					size: 40,
					fill: 0xFFD700
				});
				incomeTxt.anchor.set(0.5, 0.5);
				incomeTxt.x = towers[i].x;
				incomeTxt.y = towers[i].y;
				game.addChild(incomeTxt);
				// Animate text
				tween(incomeTxt, {
					alpha: 0,
					y: incomeTxt.y - 50
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						incomeTxt.destroy();
					}
				});
			}
		}
		essence += waveBonus + farmIncome;
		updateEssenceText();
		// Show wave complete message
		var waveBonusTxt = new Text2('Wave Complete! +' + waveBonus + ' Essence', {
			size: 80,
			fill: 0xFFFFFF
		});
		waveBonusTxt.anchor.set(0.5, 0.5);
		waveBonusTxt.x = 2048 / 2;
		waveBonusTxt.y = 2732 / 2;
		game.addChild(waveBonusTxt);
		// Animate and remove message
		tween(waveBonusTxt, {
			alpha: 0,
			y: waveBonusTxt.y - 100
		}, {
			duration: 2000,
			onFinish: function onFinish() {
				waveBonusTxt.destroy();
			}
		});
		// Unlock new tower types based on wave progress
		if (currentWave === 3 && !storage.unlockedTowers.includes('shroom')) {
			storage.unlockedTowers.push('shroom');
			shroomBtn.alpha = 0.6;
			// Show unlock message
			var unlockTxt = new Text2('New Tower Unlocked: Shroom Puff!', {
				size: 60,
				fill: 0xFFFF00
			});
			unlockTxt.anchor.set(0.5, 0.5);
			unlockTxt.x = 2048 / 2;
			unlockTxt.y = 2732 / 2 + 100;
			game.addChild(unlockTxt);
			// Animate and remove message
			tween(unlockTxt, {
				alpha: 0,
				y: unlockTxt.y - 100
			}, {
				duration: 3000,
				onFinish: function onFinish() {
					unlockTxt.destroy();
				}
			});
		} else if (currentWave === 5 && !storage.unlockedTowers.includes('flame')) {
			storage.unlockedTowers.push('flame');
			flameBtn.alpha = 0.6;
			// Show unlock message
			var unlockTxt = new Text2('New Tower Unlocked: Flame Fern!', {
				size: 60,
				fill: 0xFF5500
			});
			unlockTxt.anchor.set(0.5, 0.5);
			unlockTxt.x = 2048 / 2;
			unlockTxt.y = 2732 / 2 + 100;
			game.addChild(unlockTxt);
			// Animate and remove message
			tween(unlockTxt, {
				alpha: 0,
				y: unlockTxt.y - 100
			}, {
				duration: 3000,
				onFinish: function onFinish() {
					unlockTxt.destroy();
				}
			});
		} else if (currentWave === 8 && !storage.unlockedTowers.includes('healing')) {
			storage.unlockedTowers.push('healing');
			healingBtn.alpha = 0.6;
			// Show unlock message
			var unlockTxt = new Text2('New Tower Unlocked: Farm Shroom!', {
				size: 60,
				fill: 0xFFD700
			});
			unlockTxt.anchor.set(0.5, 0.5);
			unlockTxt.x = 2048 / 2;
			unlockTxt.y = 2732 / 2 + 100;
			game.addChild(unlockTxt);
			// Animate and remove message
			tween(unlockTxt, {
				alpha: 0,
				y: unlockTxt.y - 100
			}, {
				duration: 3000,
				onFinish: function onFinish() {
					unlockTxt.destroy();
				}
			});
		}
	}
}
function isPositionValid(x, y) {
	// Check if position is within game bounds
	if (x < 0 || x > 2048 || y < 0 || y > 2732) {
		return false;
	}
	return true;
}
// Initialize game
function initGame() {
	// Setup UI elements
	setupHealthBar();
	setupModeButtons();
	setupTowerButtons();
	setupStartWaveButton();
	// Create game level
	createLevel();
	// Set initial game state
	LK.setScore(0);
	scoreTxt.setText('0');
	// Apply difficulty settings
	if (gameDifficulty === 'easy') {
		essence = 200; // More starting essence
		heartTree.maxHealth = 150; // More health
		heartTree.health = heartTree.maxHealth;
	} else if (gameDifficulty === 'normal') {
		essence = 100; // Default starting essence
		heartTree.maxHealth = 100; // Default health
		heartTree.health = heartTree.maxHealth;
	} else if (gameDifficulty === 'hard') {
		essence = 50; // Less starting essence
		heartTree.maxHealth = 75; // Less health
		heartTree.health = heartTree.maxHealth;
	} else if (gameDifficulty === 'race') {
		essence = 150; // Moderate starting essence
		heartTree.maxHealth = 100; // Default health
		heartTree.health = heartTree.maxHealth;
		// Set game background to a darker color for race mode
		game.setBackgroundColor(0x1E3A1E); // Darker forest green
		// Show race mode announcement
		var raceModeTxt = new Text2('RACE MODE ACTIVATED!', {
			size: 80,
			fill: 0xFF5500
		});
		raceModeTxt.anchor.set(0.5, 0.5);
		raceModeTxt.x = 2048 / 2;
		raceModeTxt.y = 2732 / 2;
		game.addChild(raceModeTxt);
		// Animate and remove announcement
		tween(raceModeTxt, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 2000,
			onFinish: function onFinish() {
				raceModeTxt.destroy();
			}
		});
	} else if (gameDifficulty === 'infection') {
		essence = 120; // Moderate starting essence
		heartTree.maxHealth = 90; // Lower health due to infection damage
		heartTree.health = heartTree.maxHealth;
		// Set game background to a toxic green color for infection mode
		game.setBackgroundColor(0x1A3A1A); // Dark toxic green
		// Show infection mode announcement
		var infectionModeTxt = new Text2('INFECTION MODE ACTIVATED!', {
			size: 80,
			fill: 0x00FF00
		});
		infectionModeTxt.anchor.set(0.5, 0.5);
		infectionModeTxt.x = 2048 / 2;
		infectionModeTxt.y = 2732 / 2;
		game.addChild(infectionModeTxt);
		// Animate and remove announcement
		tween(infectionModeTxt, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 2000,
			onFinish: function onFinish() {
				infectionModeTxt.destroy();
			}
		});
	}
	updateEssenceText();
	updateHealthBar();
	// Start background music
	LK.playMusic('forestAmbience', {
		loop: true
	});
}
// Game event handlers
game.down = function (x, y, obj) {
	if (currentMode === 'guardian' && guardian) {
		guardian.moveTo(x, y);
	}
};
// Game update loop
game.update = function () {
	// Update all game objects
	for (var i = 0; i < towers.length; i++) {
		towers[i].update();
	}
	// Update enemies (backwards to safely remove)
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (!enemies[i].alive) {
			enemies[i].destroy();
			enemies.splice(i, 1);
			enemiesRemaining--;
		}
	}
	// Update essence items (backwards to safely remove)
	for (var i = essenceItems.length - 1; i >= 0; i--) {
		essenceItems[i].update();
		if (essenceItems[i].collected) {
			essenceItems[i].destroy();
			essenceItems.splice(i, 1);
		}
	}
	// Update guardian if it exists
	if (guardian) {
		guardian.update();
	}
	// Check if wave is complete
	checkWaveComplete();
};
// Display title screen instead of directly initializing game
var titleScreen = new TitleScreen();
titleScreen.x = 2048 / 2;
titleScreen.y = 2732 / 2;
game.addChild(titleScreen);
// Play background music on title screen
LK.playMusic('forestAmbience', {
	loop: true
});

===================================================================
--- original.js
+++ change.js
@@ -1754,9 +1754,9 @@
 var guardianBtn = new Container();
 var buildBtn = new Container();
 function setupModeButtons() {
 	// Guardian mode button
-	var guardianBtnBg = LK.getAsset('guardian', {
+	var guardianBtnBg = LK.getAsset('moveButton', {
 		anchorX: 0.5,
 		anchorY: 0.5,
 		width: 80,
 		height: 80