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

/**** 
* Classes
****/ 
var BuildSpot = Container.expand(function () {
	var self = Container.call(this);
	var spotGraphics = self.attachAsset('buildSpot', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.isOccupied = false;
	self.turret = null;
	self.previewRange = null;
	self.move = function (x, y, obj) {
		if (self.isOccupied) return;
		if (!self.previewRange) {
			// Create preview range indicator
			self.previewRange = self.addChild(LK.getAsset('buildSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.15,
				tint: selectedTowerType === 'laser' ? 0x4444FF : selectedTowerType === 'machineGun' ? 0xFF6600 : selectedTowerType === 'missile' ? 0xFF4444 : selectedTowerType === 'fire' ? 0xFF8800 : selectedTowerType === 'fireMachine' ? 0xFF2200 : selectedTowerType === 'fireTrap' ? 0xFF4400 : 0xFFFF00,
				scaleX: selectedTowerType === 'laser' ? 3.0 : selectedTowerType === 'machineGun' ? 4.0 : selectedTowerType === 'missile' ? 3.4 : selectedTowerType === 'fire' ? 3.6 : selectedTowerType === 'fireMachine' ? 5.0 : selectedTowerType === 'fireTrap' ? 4.0 : 4.4,
				scaleY: selectedTowerType === 'laser' ? 3.0 : selectedTowerType === 'machineGun' ? 4.0 : selectedTowerType === 'missile' ? 3.4 : selectedTowerType === 'fire' ? 3.6 : selectedTowerType === 'fireMachine' ? 5.0 : selectedTowerType === 'fireTrap' ? 4.0 : 4.4
			}));
		}
	};
	self.up = function (x, y, obj) {
		if (self.previewRange) {
			self.previewRange.destroy();
			self.previewRange = null;
		}
	};
	self.down = function (x, y, obj) {
		if (self.isOccupied) return;
		if (currency < selectedTowerCost) return;
		// Build turret
		var turret = new Turret();
		turret.x = self.x;
		turret.y = self.y;
		turret.towerType = selectedTowerType;
		turret.cost = selectedTowerCost;
		turret.updateTowerProperties(); // Update properties based on tower type
		self.turret = turret;
		self.isOccupied = true;
		currency -= selectedTowerCost;
		updateCurrencyDisplay();
		turrets.push(turret);
		game.addChild(turret);
		// Hide build spot
		spotGraphics.alpha = 0;
		// Flash green when built with tower type color
		var flashColor = selectedTowerType === 'laser' ? 0x4444FF : selectedTowerType === 'machineGun' ? 0xFF6600 : selectedTowerType === 'missile' ? 0xFF4444 : selectedTowerType === 'fire' ? 0xFF8800 : selectedTowerType === 'fireMachine' ? 0xFF2200 : selectedTowerType === 'fireTrap' ? 0xFF4400 : 0xFFFF00;
		LK.effects.flashObject(turret, flashColor, 500);
	};
	return self;
});
var FireTrap = Container.expand(function () {
	var self = Container.call(this);
	var fireGraphics = self.attachAsset('fireTrap', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8
	});
	self.damage = 80; // Increased immediate damage
	self.burnDuration = 3000; // 3 seconds
	self.lastDamage = 0;
	self.damageRate = 20; // Faster damage rate - hits more frequently
	// Add range indicator
	self.rangeIndicator = self.addChild(LK.getAsset('buildSpot', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.15,
		tint: 0xFF4400,
		scaleX: 8.0,
		// 400 pixel range
		scaleY: 8.0
	}));
	// Create fire effect animation
	tween(fireGraphics, {
		scaleX: 1.3,
		scaleY: 1.3
	}, {
		duration: 800,
		easing: tween.easeInOut,
		onFinish: function onFinish() {
			tween(fireGraphics, {
				scaleX: 1.0,
				scaleY: 1.0
			}, {
				duration: 800,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					// Restart animation loop
					if (self.parent) {
						tween(fireGraphics, {
							scaleX: 1.3,
							scaleY: 1.3
						}, {
							duration: 800,
							easing: tween.easeInOut,
							onFinish: arguments.callee
						});
					}
				}
			});
		}
	});
	self.update = function () {
		// Check for zombies within firing range
		for (var i = 0; i < zombies.length; i++) {
			var zombie = zombies[i];
			if (zombie.isDead) continue;
			var dx = zombie.x - self.x;
			var dy = zombie.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < 400) {
				// Within firing range - deal immediate damage
				self.lastDamage += speedMultiplier;
				if (self.lastDamage >= self.damageRate) {
					// Deal immediate damage every damage rate interval
					zombie.takeDamage(self.damage);
					self.lastDamage = 0;
					// Create fire explosion effect at zombie location
					var fireExplosion = game.addChild(LK.getAsset('explosion', {
						anchorX: 0.5,
						anchorY: 0.5,
						x: zombie.x,
						y: zombie.y,
						tint: 0xFF4400,
						scaleX: 1.5,
						scaleY: 1.5
					}));
					tween(fireExplosion, {
						alpha: 0,
						scaleX: 2.5,
						scaleY: 2.5
					}, {
						duration: 400,
						onFinish: function onFinish() {
							fireExplosion.destroy();
						}
					});
					LK.getSound('explosion').play();
				}
				// Apply powerful burning effect for 5 seconds
				if (!zombie.isBurning) {
					zombie.isBurning = true;
					zombie.burnTimer = 0;
					zombie.burnDuration = 300; // 5 seconds at 60fps
					zombie.burnDamage = 40; // Increased burn damage
					// More intense visual burning effect
					tween(zombie.children[0], {
						tint: 0xFF2200
					}, {
						duration: 150,
						onFinish: function onFinish() {
							tween(zombie.children[0], {
								tint: 0xFFFFFF
							}, {
								duration: 150,
								onFinish: function onFinish() {
									if (zombie.isBurning && zombie.parent) {
										tween(zombie.children[0], {
											tint: 0xFF2200
										}, {
											duration: 150,
											onFinish: arguments.callee
										});
									}
								}
							});
						}
					});
					// Add fire aura effect around burning zombie
					var fireAura = zombie.addChild(LK.getAsset('explosion', {
						anchorX: 0.5,
						anchorY: 0.5,
						alpha: 0.6,
						tint: 0xFF4400,
						scaleX: 1.2,
						scaleY: 1.2
					}));
					tween(fireAura, {
						scaleX: 1.8,
						scaleY: 1.8,
						alpha: 0.2
					}, {
						duration: 300,
						easing: tween.easeInOut,
						onFinish: function onFinish() {
							if (fireAura.parent) {
								tween(fireAura, {
									scaleX: 1.2,
									scaleY: 1.2,
									alpha: 0.6
								}, {
									duration: 300,
									easing: tween.easeInOut,
									onFinish: arguments.callee
								});
							}
						}
					});
				}
			}
		}
	};
	return self;
});
var Turret = Container.expand(function () {
	var self = Container.call(this);
	var turretGraphics = self.attachAsset('turret', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add range indicator (will be updated based on tower type)
	self.rangeIndicator = self.addChild(LK.getAsset('buildSpot', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.25,
		tint: 0x4444FF,
		scaleX: 4,
		scaleY: 4
	}));
	// Add cross indicator (hidden by default)
	self.crossIndicator = self.addChild(LK.getAsset('cross', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0,
		rotation: Math.PI / 4 // 45 degrees to make it look like an X
	}));
	self.damage = 75;
	self.range = 200;
	self.fireRate = 15; // frames between shots
	self.lastShot = 0;
	self.target = null;
	self.cost = 50;
	self.sellPrice = 25; // 50% of cost back when sold
	self.towerType = 'laser'; // Default type
	self.upgradeLevel = 1; // Track upgrade level
	self.upgradeCost = 50; // Cost to upgrade
	self.updateTowerProperties = function () {
		var upgradeMultiplier = 1 + (self.upgradeLevel - 1) * 0.5; // 50% increase per level
		if (self.towerType === 'laser') {
			self.range = 150 * upgradeMultiplier;
			self.damage = 75 * upgradeMultiplier;
			self.fireRate = Math.max(5, 15 - (self.upgradeLevel - 1) * 2); // Faster fire rate
			self.rangeIndicator.tint = 0x4444FF;
			self.rangeIndicator.scaleX = 3.0; // Keep visual size constant
			self.rangeIndicator.scaleY = 3.0; // Keep visual size constant
			self.sellPrice = Math.floor((50 + (self.upgradeLevel - 1) * 50) * 0.5); // 50% of total cost back
			self.upgradeCost = 50 * self.upgradeLevel; // Increasing upgrade cost
		} else if (self.towerType === 'missile') {
			self.range = 170 * upgradeMultiplier;
			self.damage = 120 * upgradeMultiplier;
			self.fireRate = Math.max(8, 20 - (self.upgradeLevel - 1) * 3);
			self.rangeIndicator.tint = 0xFF4444;
			self.rangeIndicator.scaleX = 3.4; // Keep visual size constant
			self.rangeIndicator.scaleY = 3.4; // Keep visual size constant
			self.sellPrice = Math.floor((100 + (self.upgradeLevel - 1) * 100) * 0.5); // 50% of total cost back
			self.upgradeCost = 100 * self.upgradeLevel;
		} else if (self.towerType === 'fire') {
			self.range = 180 * upgradeMultiplier;
			self.damage = 90 * upgradeMultiplier;
			self.fireRate = Math.max(4, 10 - (self.upgradeLevel - 1) * 2);
			self.rangeIndicator.tint = 0xFF8800;
			self.rangeIndicator.scaleX = 3.6; // Keep visual size constant
			self.rangeIndicator.scaleY = 3.6; // Keep visual size constant
			self.sellPrice = Math.floor((200 + (self.upgradeLevel - 1) * 200) * 0.5); // 50% of total cost back
			self.upgradeCost = 200 * self.upgradeLevel;
		} else if (self.towerType === 'electric') {
			self.range = 220 * upgradeMultiplier;
			self.damage = 60 * upgradeMultiplier;
			self.fireRate = Math.max(6, 12 - (self.upgradeLevel - 1) * 2);
			self.rangeIndicator.tint = 0xFFFF00;
			self.rangeIndicator.scaleX = 4.4; // Keep visual size constant
			self.rangeIndicator.scaleY = 4.4; // Keep visual size constant
			self.sellPrice = Math.floor((300 + (self.upgradeLevel - 1) * 300) * 0.5); // 50% of total cost back
			self.upgradeCost = 300 * self.upgradeLevel;
		} else if (self.towerType === 'fireMachine') {
			self.range = 250 * upgradeMultiplier;
			self.damage = 200 * upgradeMultiplier;
			self.fireRate = Math.max(3, 8 - (self.upgradeLevel - 1) * 2);
			self.rangeIndicator.tint = 0xFF2200;
			self.rangeIndicator.scaleX = 5.0; // Keep visual size constant
			self.rangeIndicator.scaleY = 5.0; // Keep visual size constant
			self.sellPrice = Math.floor((500 + (self.upgradeLevel - 1) * 500) * 0.5); // 50% of total cost back
			self.upgradeCost = 500 * self.upgradeLevel;
		} else if (self.towerType === 'machineGun') {
			self.range = 200 * upgradeMultiplier;
			self.damage = 300 * upgradeMultiplier;
			self.fireRate = Math.max(2, 5 - (self.upgradeLevel - 1) * 1);
			self.rangeIndicator.tint = 0xFF6600;
			self.rangeIndicator.scaleX = 4.0; // Keep visual size constant
			self.rangeIndicator.scaleY = 4.0; // Keep visual size constant
			self.sellPrice = Math.floor((1000 + (self.upgradeLevel - 1) * 1000) * 0.5); // 50% of total cost back
			self.upgradeCost = 1000 * self.upgradeLevel;
		} else if (self.towerType === 'fireTrap') {
			self.range = 400 * upgradeMultiplier;
			self.damage = 50 * upgradeMultiplier;
			self.fireRate = Math.max(10, 30 - (self.upgradeLevel - 1) * 5);
			self.rangeIndicator.tint = 0xFF4400;
			self.rangeIndicator.scaleX = 4.0; // Keep visual size constant
			self.rangeIndicator.scaleY = 4.0; // Keep visual size constant
			self.sellPrice = Math.floor((700 + (self.upgradeLevel - 1) * 700) * 0.5); // 50% of total cost back
			self.upgradeCost = 700 * self.upgradeLevel;
		}
	};
	self.towerType = 'laser'; // Default type
	self.findTarget = function () {
		var closestZombie = null;
		var closestDistance = self.range;
		for (var i = 0; i < zombies.length; i++) {
			var zombie = zombies[i];
			if (zombie.isDead) continue;
			var dx = zombie.x - self.x;
			var dy = zombie.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestZombie = zombie;
			}
		}
		return closestZombie;
	};
	self.shoot = function (target) {
		// Direct damage to target without bullets
		if (target && !target.isDead) {
			target.takeDamage(self.damage);
			// Create explosion effect at target location
			var explosion = game.addChild(LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: target.x,
				y: target.y
			}));
			tween(explosion, {
				alpha: 0,
				scaleX: 2,
				scaleY: 2
			}, {
				duration: 300,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
			LK.getSound('explosion').play();
		}
		LK.getSound('shoot').play();
		// Flash blue when shooting
		LK.effects.flashObject(self, 0x4444ff, 200);
	};
	self.down = function (x, y, obj) {
		if (placementMode) return; // Don't select turrets in placement mode
		selectTurret(self);
	}; //{1j_new}
	self.update = function () {
		// Skip shooting if turret is frozen
		if (self.isFrozen) return;
		self.lastShot += speedMultiplier;
		if (self.lastShot >= self.fireRate) {
			var target = self.findTarget();
			if (target) {
				self.shoot(target);
				self.lastShot = 0;
			}
		}
	};
	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 = 100;
	self.maxHealth = 100;
	self.speed = 1;
	self.reward = 10;
	self.pathIndex = 0;
	self.targetX = 0;
	self.targetY = 0;
	self.isDead = false;
	// Create health bar
	self.healthBar = self.addChild(LK.getAsset('buildSpot', {
		anchorX: 0,
		anchorY: 0.5,
		x: -25,
		y: -40,
		width: 50,
		height: 6,
		color: 0x44FF44
	}));
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.isDead = true;
			// Directly add currency without visual money drop
			currency += self.reward;
			updateCurrencyDisplay();
			LK.getSound('zombieHit').play();
		}
	};
	self.update = function () {
		if (self.isDead) return;
		// Move towards target continuously
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		// Always move towards target, no stopping threshold
		if (distance > 0.1) {
			var moveX = dx / distance * self.speed * speedMultiplier;
			var moveY = dy / distance * self.speed * speedMultiplier;
			self.x += moveX;
			self.y += moveY;
		}
		// Check if we've reached or passed the current target
		if (distance <= self.speed * speedMultiplier + 1) {
			// Move to next path point immediately
			self.pathIndex++;
			if (self.pathIndex >= gamePath.length) {
				// Reached end - damage base
				lives--;
				updateLivesDisplay();
				if (lives <= 0) {
					LK.showGameOver();
				}
				self.isDead = true;
			} else {
				self.targetX = gamePath[self.pathIndex].x;
				self.targetY = gamePath[self.pathIndex].y;
			}
		}
		// Handle burning effect
		if (self.isBurning) {
			self.burnTimer += speedMultiplier;
			if (self.burnTimer >= 60) {
				// Burn damage every second
				self.takeDamage(self.burnDamage);
				self.burnTimer = 0;
			}
			// Stop burning after 5 seconds
			if (self.burnTimer >= self.burnDuration) {
				self.isBurning = false;
				tween.stop(self.children[0], {
					tint: true
				});
				self.children[0].tint = 0xFFFFFF;
			}
		}
		// Handle freeze effect for levels 11 and 15
		if (self.hasFreezeEffect && !self.freezeEffectUsed) {
			self.freezeEffectCooldown += speedMultiplier;
			// Use freeze effect when zombie is at half health or after 5 seconds
			var healthPercent = self.health / self.maxHealth;
			if (healthPercent <= 0.5 || self.freezeEffectCooldown >= 300) {
				self.freezeEffectUsed = true;
				activateZombieFreezeEffect();
				// Add visual indication that zombie used freeze effect
				var freezeIndicator = self.addChild(LK.getAsset('cross', {
					anchorX: 0.5,
					anchorY: 0.5,
					y: -50,
					tint: 0x00CCFF,
					scaleX: 1.5,
					scaleY: 1.5
				}));
				tween(freezeIndicator, {
					alpha: 0,
					y: -80,
					scaleX: 2.0,
					scaleY: 2.0
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						if (freezeIndicator.parent) {
							freezeIndicator.destroy();
						}
					}
				});
			}
		}
		// Update health bar if it exists
		if (self.healthBar) {
			var healthPercent = self.health / self.maxHealth;
			self.healthBar.scaleX = healthPercent;
			self.healthBar.tint = healthPercent > 0.5 ? 0x44FF44 : healthPercent > 0.25 ? 0xFFFF44 : 0xFF4444;
		}
	};
	return self;
});
var FlyingZombie = Zombie.expand(function () {
	var self = Zombie.call(this);
	// Mark as flying type
	self.isFlying = true;
	// Add flying visual indicator - wings or glow effect
	var flyingIndicator = self.addChild(LK.getAsset('buildSpot', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.4,
		tint: 0x00FFFF,
		scaleX: 1.5,
		scaleY: 0.8,
		y: -10
	}));
	// Start floating animation
	function startFloatingAnimation() {
		tween(self, {
			y: self.y - 15
		}, {
			duration: 1000,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(self, {
					y: self.y + 15
				}, {
					duration: 1000,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						if (self.parent && !self.isDead) {
							startFloatingAnimation();
						}
					}
				});
			}
		});
	}
	// Store the original update method from parent Zombie class
	var originalUpdate = self.update;
	self.update = function () {
		if (self.isDead) return;
		// Initialize flying zombie movement properties if not set
		if (!self.flyingInitialized) {
			self.flyingInitialized = true;
			// Set initial target as the final destination
			self.finalTargetX = gamePath[gamePath.length - 1].x;
			self.finalTargetY = gamePath[gamePath.length - 1].y;
			// Flying zombies move more directly but with some wandering
			self.wanderAngle = Math.random() * Math.PI * 2;
			self.wanderTimer = 0;
			self.wanderChangeRate = 180; // Change direction every 3 seconds
		}
		// Flying zombie free movement logic
		var dx = self.finalTargetX - self.x;
		var dy = self.finalTargetY - self.y;
		var distanceToTarget = Math.sqrt(dx * dx + dy * dy);
		// Add wandering behavior to make movement more interesting
		self.wanderTimer += speedMultiplier;
		if (self.wanderTimer >= self.wanderChangeRate) {
			self.wanderAngle += (Math.random() - 0.5) * 0.8; // Random direction change
			self.wanderTimer = 0;
		}
		// Calculate movement with wandering
		var wanderStrength = 0.3; // How much the zombie wanders vs goes direct
		var directX = dx / distanceToTarget;
		var directY = dy / distanceToTarget;
		var wanderX = Math.cos(self.wanderAngle) * wanderStrength;
		var wanderY = Math.sin(self.wanderAngle) * wanderStrength;
		// Combine direct movement with wandering
		var moveX = (directX * (1 - wanderStrength) + wanderX) * self.speed * speedMultiplier;
		var moveY = (directY * (1 - wanderStrength) + wanderY) * self.speed * speedMultiplier;
		// Apply movement
		self.x += moveX;
		self.y += moveY;
		// Keep flying zombies within game bounds
		if (self.x < 50) self.x = 50;
		if (self.x > 1998) self.x = 1998;
		if (self.y < 50) self.y = 50;
		if (self.y > 2050) self.y = 2050;
		// Check if reached the end
		if (distanceToTarget <= 100) {
			// Reached end - damage base
			lives--;
			updateLivesDisplay();
			if (lives <= 0) {
				LK.showGameOver();
			}
			self.isDead = true;
		}
		// Handle burning effect (same as regular zombies)
		if (self.isBurning) {
			self.burnTimer += speedMultiplier;
			if (self.burnTimer >= 60) {
				// Burn damage every second
				self.takeDamage(self.burnDamage);
				self.burnTimer = 0;
			}
			// Stop burning after 5 seconds
			if (self.burnTimer >= self.burnDuration) {
				self.isBurning = false;
				tween.stop(self.children[0], {
					tint: true
				});
				self.children[0].tint = 0xFFFFFF;
			}
		}
		// Handle freeze effect for levels 11 and 15 (same as regular zombies)
		if (self.hasFreezeEffect && !self.freezeEffectUsed) {
			self.freezeEffectCooldown += speedMultiplier;
			var healthPercent = self.health / self.maxHealth;
			if (healthPercent <= 0.5 || self.freezeEffectCooldown >= 300) {
				self.freezeEffectUsed = true;
				activateZombieFreezeEffect();
				var freezeIndicator = self.addChild(LK.getAsset('cross', {
					anchorX: 0.5,
					anchorY: 0.5,
					y: -50,
					tint: 0x00CCFF,
					scaleX: 1.5,
					scaleY: 1.5
				}));
				tween(freezeIndicator, {
					alpha: 0,
					y: -80,
					scaleX: 2.0,
					scaleY: 2.0
				}, {
					duration: 1000,
					onFinish: function onFinish() {
						if (freezeIndicator.parent) {
							freezeIndicator.destroy();
						}
					}
				});
			}
		}
		// Update health bar if it exists
		if (self.healthBar) {
			var healthPercent = self.health / self.maxHealth;
			self.healthBar.scaleX = healthPercent;
			self.healthBar.tint = healthPercent > 0.5 ? 0x44FF44 : healthPercent > 0.25 ? 0xFFFF44 : 0xFF4444;
		}
		// Start floating animation if not already started
		if (!self.floatingStarted && self.parent) {
			self.floatingStarted = true;
			startFloatingAnimation();
		}
		// Add gentle rotation for flying effect
		if (self.children[0]) {
			self.children[0].rotation += 0.02 * speedMultiplier;
		}
		// Pulsing glow effect for flying indicator
		if (flyingIndicator && flyingIndicator.parent) {
			flyingIndicator.alpha = 0.4 + Math.sin(LK.ticks * 0.1) * 0.2;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var zombies = [];
var turrets = [];
var bullets = [];
var buildSpots = [];
var fireTraps = [];
var gamePath = [];
var currency = 100;
var lives = 10;
var wave = 1;
var zombiesSpawned = 0;
var zombiesToSpawn = 5;
var spawnTimer = 0;
var spawnRate = 120; // frames between spawns
var baseSpawnRate = 120; // Store base spawn rate
var waveActive = false;
var waveCompleted = false;
var selectedTowerType = 'laser';
var selectedTowerCost = 50;
// Create path points for zombies to follow - Shorter strategic path
gamePath = [{
	x: 0,
	y: 1366
}, {
	x: 400,
	y: 1366
}, {
	x: 400,
	y: 1000
}, {
	x: 800,
	y: 1000
}, {
	x: 800,
	y: 1500
}, {
	x: 1200,
	y: 1500
}, {
	x: 1200,
	y: 800
}, {
	x: 1600,
	y: 800
}, {
	x: 1600,
	y: 400
}, {
	x: 1000,
	y: 400
}, {
	x: 1000,
	y: 1800
}, {
	x: 1400,
	y: 1800
}, {
	x: 2048,
	y: 1800
}];
// Create visual path
for (var i = 0; i < gamePath.length - 1; i++) {
	var start = gamePath[i];
	var end = gamePath[i + 1];
	var steps = Math.floor(Math.sqrt((end.x - start.x) * (end.x - start.x) + (end.y - start.y) * (end.y - start.y)) / 120);
	for (var j = 0; j <= steps; j++) {
		var t = j / steps;
		var pathX = start.x + (end.x - start.x) * t;
		var pathY = start.y + (end.y - start.y) * t;
		var pathTile = game.addChild(LK.getAsset('path', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: pathX,
			y: pathY,
			alpha: 0.3
		}));
	}
}
// Build spots are no longer needed - turrets can be placed anywhere
// buildSpots array is kept for compatibility but not used
// UI Elements
var currencyTxt = new Text2('Money: $' + currency, {
	size: 72,
	fill: 0x00FFFF
});
currencyTxt.anchor.set(0, 0);
currencyTxt.x = 120; // Offset from left edge to avoid platform menu
currencyTxt.y = 100;
LK.gui.topLeft.addChild(currencyTxt);
// Add glowing effect to currency
LK.effects.flashObject(currencyTxt, 0x00FFFF, 2000);
var livesTxt = new Text2('Lives: ' + lives, {
	size: 60,
	fill: 0xFF4444
});
livesTxt.anchor.set(0, 0);
livesTxt.x = 120; // Offset from left edge to avoid platform menu
livesTxt.y = 20;
LK.gui.topLeft.addChild(livesTxt);
// Tower purchase menu at bottom left - vertical layout with consistent alignment
var towerMenuX = 120; // Left side position for tower menu
var towerMenuStartY = 1550; // Starting Y position - moved up to be above sell turret text
var towerMenuSpacing = 120; // Increased spacing between buttons
var laserTurretBtn = new Text2('Laser Turret\n$50', {
	size: 48,
	fill: 0x4444FF
});
laserTurretBtn.anchor.set(0, 0.5); // Left-aligned anchor
laserTurretBtn.x = towerMenuX;
laserTurretBtn.y = towerMenuStartY;
game.addChild(laserTurretBtn);
var missileLauncherBtn = new Text2('Missile Tower\n$100', {
	size: 48,
	fill: 0xFF4444
});
missileLauncherBtn.anchor.set(0, 0.5); // Left-aligned anchor
missileLauncherBtn.x = towerMenuX;
missileLauncherBtn.y = towerMenuStartY + towerMenuSpacing;
game.addChild(missileLauncherBtn);
var fireDroneBtn = new Text2('Fire Blaster\n$200', {
	size: 48,
	fill: 0xFF8800
});
fireDroneBtn.anchor.set(0, 0.5); // Left-aligned anchor
fireDroneBtn.x = towerMenuX;
fireDroneBtn.y = towerMenuStartY + towerMenuSpacing * 2;
game.addChild(fireDroneBtn);
var electricTrapBtn = new Text2('Electric Field\n$300', {
	size: 48,
	fill: 0xFFFF00
});
electricTrapBtn.anchor.set(0, 0.5); // Left-aligned anchor
electricTrapBtn.x = towerMenuX;
electricTrapBtn.y = towerMenuStartY + towerMenuSpacing * 3;
game.addChild(electricTrapBtn);
var fireMachineBtn = new Text2('Fire Machine\n$500', {
	size: 48,
	fill: 0xFF2200
});
fireMachineBtn.anchor.set(0, 0.5); // Left-aligned anchor
fireMachineBtn.x = towerMenuX;
fireMachineBtn.y = towerMenuStartY + towerMenuSpacing * 4;
game.addChild(fireMachineBtn);
var machineGunBtn = new Text2('Machine Gun\n$1000', {
	size: 48,
	fill: 0xFF6600
});
machineGunBtn.anchor.set(0, 0.5); // Left-aligned anchor
machineGunBtn.x = towerMenuX;
machineGunBtn.y = towerMenuStartY + towerMenuSpacing * 5;
game.addChild(machineGunBtn);
var fireTrapBtn = new Text2('Fire Trap\n$700', {
	size: 48,
	fill: 0xFF4400
});
fireTrapBtn.anchor.set(0, 0.5); // Left-aligned anchor
fireTrapBtn.x = towerMenuX;
fireTrapBtn.y = towerMenuStartY + towerMenuSpacing * 7;
game.addChild(fireTrapBtn);
var waveTxt = new Text2('Level ' + wave, {
	size: 80,
	fill: 0x44FF44
});
waveTxt.anchor.set(0.5, 0);
waveTxt.y = 20;
LK.gui.top.addChild(waveTxt);
// Bomb system
var bombsLeft = 3;
var bombTxt = new Text2('Bombs: ' + bombsLeft, {
	size: 72,
	fill: 0xFF0000
});
bombTxt.anchor.set(1, 0);
bombTxt.x = -20;
bombTxt.y = -80;
LK.gui.topRight.addChild(bombTxt);
var bombBtn = new Text2('💣 BOMB', {
	size: 80,
	fill: 0xFF4444
});
bombBtn.anchor.set(1, 1);
bombBtn.x = -20;
bombBtn.y = -20;
LK.gui.bottomRight.addChild(bombBtn);
var startWaveBtn = new Text2('START WAVE', {
	size: 80,
	fill: 0xFFFFFF
});
startWaveBtn.anchor.set(0.5, 0.5);
startWaveBtn.x = 500;
startWaveBtn.y = 2550;
game.addChild(startWaveBtn);
var sellBtn = new Text2('SELL\nTURRET\n$0', {
	size: 64,
	fill: 0xFFAA00
});
sellBtn.anchor.set(0.5, 0.5);
sellBtn.x = 300; // Position to the left
sellBtn.y = 2400; // Move down
sellBtn.alpha = 0.5; // Start dimmed
game.addChild(sellBtn);
var upgradeBtn = new Text2('UPGRADE\nTURRET\n$0', {
	size: 64,
	fill: 0x00FF00
});
upgradeBtn.anchor.set(0.5, 0.5);
upgradeBtn.x = 700; // Position to the right
upgradeBtn.y = 2400; // Same height as sell button - moved down
upgradeBtn.alpha = 0.5; // Start dimmed
game.addChild(upgradeBtn);
// Speed acceleration system
var gameSpeed = 1.0;
var speedMultiplier = 1.0;
// Speed acceleration buttons
var speed1xBtn = new Text2('1x Speed', {
	size: 48,
	fill: 0x00FF00
});
speed1xBtn.anchor.set(0.5, 0.5);
speed1xBtn.x = 1400;
speed1xBtn.y = 2180;
game.addChild(speed1xBtn);
var speed2xBtn = new Text2('2x Speed', {
	size: 48,
	fill: 0xFFFF00
});
speed2xBtn.anchor.set(0.5, 0.5);
speed2xBtn.x = 1400;
speed2xBtn.y = 2280;
game.addChild(speed2xBtn);
var speed3xBtn = new Text2('3x Speed', {
	size: 48,
	fill: 0xFF8800
});
speed3xBtn.anchor.set(0.5, 0.5);
speed3xBtn.x = 1400;
speed3xBtn.y = 2380;
game.addChild(speed3xBtn);
function distanceToLineSegment(px, py, x1, y1, x2, y2) {
	var dx = x2 - x1;
	var dy = y2 - y1;
	var length = Math.sqrt(dx * dx + dy * dy);
	if (length === 0) return Math.sqrt((px - x1) * (px - x1) + (py - y1) * (py - y1));
	var t = ((px - x1) * dx + (py - y1) * dy) / (length * length);
	t = Math.max(0, Math.min(1, t));
	var projX = x1 + t * dx;
	var projY = y1 + t * dy;
	return Math.sqrt((px - projX) * (px - projX) + (py - projY) * (py - projY));
}
function updateCurrencyDisplay() {
	currencyTxt.setText('Money: $' + currency);
	// Add glowing effect when currency changes
	LK.effects.flashObject(currencyTxt, 0x00FFFF, 500);
}
function updateBombDisplay() {
	bombTxt.setText('Bombs: ' + bombsLeft);
}
function useBomb() {
	if (bombsLeft <= 0) return;
	bombsLeft--;
	updateBombDisplay();
	// Create massive explosion effect
	var bombExplosion = game.addChild(LK.getAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1366,
		scaleX: 10,
		scaleY: 10,
		alpha: 0.8
	}));
	// Damage all zombies significantly
	for (var i = 0; i < zombies.length; i++) {
		if (!zombies[i].isDead) {
			zombies[i].takeDamage(150);
			LK.effects.flashObject(zombies[i], 0xFF0000, 500);
		}
	}
	// Animate explosion
	tween(bombExplosion, {
		alpha: 0,
		scaleX: 15,
		scaleY: 15
	}, {
		duration: 1000,
		onFinish: function onFinish() {
			bombExplosion.destroy();
		}
	});
	LK.getSound('explosion').play();
	LK.effects.flashScreen(0xFF4444, 800);
}
function updateLivesDisplay() {
	livesTxt.setText('Lives: ' + lives);
}
function updateWaveDisplay() {
	waveTxt.setText('Level ' + wave);
}
function startWave() {
	if (waveActive) return;
	waveActive = true;
	waveCompleted = false;
	zombiesSpawned = 0;
	// Make first level easier with fewer zombies
	if (wave === 1) {
		zombiesToSpawn = 3; // Only 3 zombies for first wave
	} else if (wave >= 9 && wave <= 10) {
		zombiesToSpawn = 10; // Only 10 enemies for levels 9 and 10
	} else if (wave >= 11) {
		zombiesToSpawn = 12 + (wave - 11) * 2; // More enemies for levels 11-15
	} else {
		zombiesToSpawn = 5 + (wave - 1) * 2; // Adjusted formula for subsequent waves
	}
	spawnTimer = 0;
	startWaveBtn.alpha = 0.3;
	// Increase zombie health each wave, but start lower for first level
	if (wave === 1) {
		Zombie.prototype.baseHealth = 60; // Weaker zombies for first level
	} else if (wave <= 5) {
		Zombie.prototype.baseHealth = 100 + (wave - 1) * 35; // Adjusted for waves 2-5
	} else if (wave <= 10) {
		// After level 5, base health becomes extremely high for boss-level enemies
		var levelBonus = wave - 5;
		Zombie.prototype.baseHealth = 2000 + levelBonus * 800; // Extremely high base health after level 5 - boss-level
	} else {
		// Levels 11-15: Ultimate boss enemies with exponential health scaling
		var levelBonus = wave - 10;
		Zombie.prototype.baseHealth = 8000 + levelBonus * 2000; // Exponential health scaling for levels 11-15
	}
}
function spawnZombie() {
	if (zombiesSpawned >= zombiesToSpawn) return;
	// Determine if this should be a flying zombie (30% chance for waves 10+)
	var shouldBeFlyingZombie = wave >= 10 && Math.random() < 0.3;
	var zombie = shouldBeFlyingZombie ? new FlyingZombie() : new Zombie();
	zombie.x = gamePath[0].x;
	zombie.y = gamePath[0].y;
	zombie.targetX = gamePath[1].x;
	zombie.targetY = gamePath[1].y;
	// Make first level zombies weaker and slower
	if (wave === 1) {
		zombie.health = 60; // Much weaker for first level
		zombie.speed = 1.2; // Faster for first level
		zombie.reward = 15; // Higher reward for first level to help progression
	} else if (wave <= 5) {
		zombie.health = 100 + (wave - 1) * 35; // Adjusted for waves 2-5
		zombie.speed = 1.5 + (wave - 1) * 0.4; // Faster for waves 2-5
		zombie.reward = 10 + wave * 5;
	} else {
		// After level 5, enemies become extremely strong bosses
		var levelBonus = wave - 5;
		// Levels 9 and 10 have nearly indestructible enemies
		if (wave >= 9 && wave <= 10) {
			zombie.health = 15000 + levelBonus * 5000; // Massive health for levels 9-10
		} else if (wave >= 11) {
			// Levels 11-15: Ultimate boss enemies with exponential health
			var ultimateBonus = wave - 10;
			zombie.health = 25000 + ultimateBonus * 10000; // Exponential health for levels 11-15
			// Add freeze effect for levels 11 and 15
			if (wave === 11 || wave === 15) {
				zombie.hasFreezeEffect = true;
				zombie.freezeEffectUsed = false;
				zombie.freezeEffectCooldown = 0;
			}
		} else {
			zombie.health = 2000 + levelBonus * 800; // Extremely high health after level 5 - boss-level
		}
		zombie.speed = 2.5 + levelBonus * 0.3; // Reduced speed after level 5 - not too fast
		zombie.reward = 100 + levelBonus * 50; // Much higher rewards for boss-level enemies
		// After level 6, some enemies get speed boost
		if (wave > 6) {
			var shouldGetSpeedBoost = Math.random() < 0.4; // 40% chance for speed boost
			if (shouldGetSpeedBoost) {
				zombie.speed *= 1.8; // 80% speed increase for boosted enemies
				zombie.hasSpeedBoost = true;
				// Flying zombies get even more speed boost
				if (zombie.isFlying) {
					zombie.speed *= 1.3; // Additional 30% speed for flying zombies
					zombie.children[0].tint = 0x00FFAA; // Turquoise tint for fast flying enemies
				} else {
					zombie.children[0].tint = 0xFF8800; // Orange tint for speed boost
				}
				// Add speed boost aura effect
				zombie.attachAsset('buildSpot', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.4,
					tint: 0xFF8800,
					scaleX: 1.8,
					scaleY: 1.8
				});
			}
		}
	}
	zombie.maxHealth = zombie.health;
	// Add visual effects for higher levels but keep first level size
	if (wave >= 5) {
		// Add continuous glowing effect for boss-level enemies
		LK.effects.flashObject(zombie, 0xFF0000, 2000);
		// Keep zombie size same as first level - no scaling
		zombie.children[0].scaleX = 1.0;
		zombie.children[0].scaleY = 1.0;
		// Different tint for flying zombies
		if (zombie.isFlying) {
			zombie.children[0].tint = 0x00FFFF; // Cyan tint for flying boss enemies
		} else {
			zombie.children[0].tint = 0xFF0000; // Deep red tint for boss enemies
		}
		// Add boss aura effect
		zombie.attachAsset('buildSpot', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.6,
			tint: 0xFF0000,
			scaleX: 2.5,
			scaleY: 2.5
		});
		// Add second layer boss effect for very high levels
		if (wave >= 8) {
			// Level 8+ enemies are EXTREMELY strong with maximum boss effects
			if (wave >= 11) {
				zombie.health *= 5.0; // 5x health for levels 11-15 - ultimate bosses
				zombie.reward *= 10; // 10x rewards for these ultimate bosses
			} else if (wave >= 9) {
				zombie.health *= 3.0; // Triple health for levels 9-10 - nearly indestructible
				zombie.reward *= 5; // 5x rewards for these ultimate bosses
			} else {
				zombie.health *= 1.5; // 50% more health on top of base boss health
				zombie.reward *= 2; // Double rewards for these ultra-bosses
			}
			zombie.maxHealth = zombie.health;
			// Maximum boss visual effects
			zombie.attachAsset('buildSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.6,
				tint: 0xFFFF00,
				scaleX: 4.0,
				scaleY: 4.0
			});
			// Add third layer ultra-boss effect for level 8+
			zombie.attachAsset('buildSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.4,
				tint: 0xFF00FF,
				scaleX: 3.5,
				scaleY: 3.5
			});
			// Levels 9-15 get additional intimidating effects
			if (wave >= 11) {
				// Levels 11-15: Ultimate boss effects with rainbow aura
				zombie.attachAsset('buildSpot', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.9,
					tint: 0xFF00FF,
					scaleX: 6.0,
					scaleY: 6.0
				});
				zombie.attachAsset('buildSpot', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.8,
					tint: 0x00FFFF,
					scaleX: 5.5,
					scaleY: 5.5
				});
				zombie.children[0].scaleX = 1.0; // Keep same size as first level
				zombie.children[0].scaleY = 1.0; // Keep same size as first level
				// Different tint for flying ultimate bosses
				if (zombie.isFlying) {
					zombie.children[0].tint = 0x00FFFF; // Cyan tint for flying ultimate bosses
					// Add extra flying effects for ultimate flying bosses
					LK.effects.flashObject(zombie, 0x00FFFF, 600);
				} else {
					zombie.children[0].tint = 0xFF00FF; // Magenta tint for ultimate bosses
				}
				// Multiple rainbow effects for ultimate bosses
				LK.effects.flashObject(zombie, 0xFF00FF, 800);
				LK.effects.flashObject(zombie, 0x00FFFF, 1000);
				LK.effects.flashObject(zombie, 0xFFFF00, 1200);
			} else if (wave >= 9) {
				// Add fourth layer ultimate boss effect for levels 9-10
				zombie.attachAsset('buildSpot', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.8,
					tint: 0x000000,
					scaleX: 5.0,
					scaleY: 5.0
				});
				// Add fifth layer ultimate boss effect for levels 9-10
				zombie.attachAsset('buildSpot', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.7,
					tint: 0xFFFFFF,
					scaleX: 4.5,
					scaleY: 4.5
				});
				// Keep them same size as first level
				zombie.children[0].scaleX = 1.0;
				zombie.children[0].scaleY = 1.0;
				// Different tint for flying ultimate bosses
				if (zombie.isFlying) {
					zombie.children[0].tint = 0x00CCFF; // Light blue tint for flying ultimate bosses
				} else {
					zombie.children[0].tint = 0x000000; // Black tint for ultimate bosses
				}
				// Multiple continuous pulsing effects for ultimate bosses
				LK.effects.flashObject(zombie, 0x000000, 1000);
				LK.effects.flashObject(zombie, 0xFFFFFF, 1200);
			} else {
				// Keep them same size as first level
				zombie.children[0].scaleX = 1.0;
				zombie.children[0].scaleY = 1.0;
				zombie.children[0].tint = 0x8B0000; // Dark red tint for ultra bosses
				// Continuous pulsing effect for ultra bosses
				LK.effects.flashObject(zombie, 0xFF00FF, 1500);
			}
		}
	}
	zombies.push(zombie);
	game.addChild(zombie);
	zombiesSpawned++;
}
function checkWaveComplete() {
	if (!waveActive) return;
	var aliveZombies = 0;
	for (var i = 0; i < zombies.length; i++) {
		if (!zombies[i].isDead) {
			aliveZombies++;
		}
	}
	if (zombiesSpawned >= zombiesToSpawn && aliveZombies === 0) {
		waveActive = false;
		waveCompleted = true;
		wave++;
		updateWaveDisplay();
		currency += 50; // Wave completion bonus
		updateCurrencyDisplay();
		startWaveBtn.alpha = 1;
		// Flash screen green for wave completion
		LK.effects.flashScreen(0x44ff44, 1000);
		// Check win condition
		if (wave > 15) {
			LK.showYouWin();
		}
	}
}
// Start wave button interaction
startWaveBtn.down = function (x, y, obj) {
	startWave();
};
// Bomb button interaction
bombBtn.down = function (x, y, obj) {
	useBomb();
};
// Sell button interaction
sellBtn.down = function (x, y, obj) {
	sellTurret();
};
// Upgrade button interaction
upgradeBtn.down = function (x, y, obj) {
	upgradeTurret();
};
// Tower selection highlighting
var selectedTowerBtn = laserTurretBtn;
function highlightSelectedTower() {
	// Reset all tower buttons
	laserTurretBtn.alpha = selectedTowerType === 'laser' ? 1.0 : 0.7;
	machineGunBtn.alpha = selectedTowerType === 'machineGun' ? 1.0 : 0.7;
	missileLauncherBtn.alpha = selectedTowerType === 'missile' ? 1.0 : 0.7;
	fireDroneBtn.alpha = selectedTowerType === 'fire' ? 1.0 : 0.7;
	electricTrapBtn.alpha = selectedTowerType === 'electric' ? 1.0 : 0.7;
	fireMachineBtn.alpha = selectedTowerType === 'fireMachine' ? 1.0 : 0.7;
	fireTrapBtn.alpha = selectedTowerType === 'fireTrap' ? 1.0 : 0.7;
	// Add glow effect to selected tower
	if (selectedTowerType === 'laser') {
		LK.effects.flashObject(laserTurretBtn, 0x4444FF, 500);
	} else if (selectedTowerType === 'machineGun') {
		LK.effects.flashObject(machineGunBtn, 0xFF6600, 500);
	} else if (selectedTowerType === 'missile') {
		LK.effects.flashObject(missileLauncherBtn, 0xFF4444, 500);
	} else if (selectedTowerType === 'fire') {
		LK.effects.flashObject(fireDroneBtn, 0xFF8800, 500);
	} else if (selectedTowerType === 'electric') {
		LK.effects.flashObject(electricTrapBtn, 0xFFFF00, 500);
	} else if (selectedTowerType === 'fireMachine') {
		LK.effects.flashObject(fireMachineBtn, 0xFF2200, 500);
	} else if (selectedTowerType === 'fireTrap') {
		LK.effects.flashObject(fireTrapBtn, 0xFF4400, 500);
	}
}
// Initial highlight
highlightSelectedTower();
// Speed button interactions
speed1xBtn.down = function (x, y, obj) {
	speedMultiplier = 1.0;
	highlightSelectedSpeed();
};
speed2xBtn.down = function (x, y, obj) {
	speedMultiplier = 2.0;
	highlightSelectedSpeed();
};
speed3xBtn.down = function (x, y, obj) {
	speedMultiplier = 3.0;
	highlightSelectedSpeed();
};
function highlightSelectedSpeed() {
	// Reset all speed buttons
	speed1xBtn.alpha = speedMultiplier === 1.0 ? 1.0 : 0.7;
	speed2xBtn.alpha = speedMultiplier === 2.0 ? 1.0 : 0.7;
	speed3xBtn.alpha = speedMultiplier === 3.0 ? 1.0 : 0.7;
	// Add glow effect to selected speed
	if (speedMultiplier === 1.0) {
		LK.effects.flashObject(speed1xBtn, 0x00FF00, 500);
	} else if (speedMultiplier === 2.0) {
		LK.effects.flashObject(speed2xBtn, 0xFFFF00, 500);
	} else if (speedMultiplier === 3.0) {
		LK.effects.flashObject(speed3xBtn, 0xFF8800, 500);
	}
}
// Initial speed highlight
highlightSelectedSpeed();
// Tower menu interactions
laserTurretBtn.down = function (x, y, obj) {
	if (currency < 50) return; // Not enough money
	selectedTowerType = 'laser';
	selectedTowerCost = 50;
	placementMode = true;
	turretToPlace = {
		type: 'laser',
		cost: 50
	};
	highlightSelectedTower();
};
machineGunBtn.down = function (x, y, obj) {
	if (currency < 1000) return; // Not enough money
	selectedTowerType = 'machineGun';
	selectedTowerCost = 1000;
	placementMode = true;
	turretToPlace = {
		type: 'machineGun',
		cost: 1000
	};
	highlightSelectedTower();
};
missileLauncherBtn.down = function (x, y, obj) {
	if (currency < 100) return; // Not enough money
	selectedTowerType = 'missile';
	selectedTowerCost = 100;
	placementMode = true;
	turretToPlace = {
		type: 'missile',
		cost: 100
	};
	highlightSelectedTower();
};
fireDroneBtn.down = function (x, y, obj) {
	if (currency < 200) return; // Not enough money
	selectedTowerType = 'fire';
	selectedTowerCost = 200;
	placementMode = true;
	turretToPlace = {
		type: 'fire',
		cost: 200
	};
	highlightSelectedTower();
};
electricTrapBtn.down = function (x, y, obj) {
	if (currency < 300) return; // Not enough money
	selectedTowerType = 'electric';
	selectedTowerCost = 300;
	placementMode = true;
	turretToPlace = {
		type: 'electric',
		cost: 300
	};
	highlightSelectedTower();
};
fireMachineBtn.down = function (x, y, obj) {
	if (currency < 500) return; // Not enough money
	selectedTowerType = 'fireMachine';
	selectedTowerCost = 500;
	placementMode = true;
	turretToPlace = {
		type: 'fireMachine',
		cost: 500
	};
	highlightSelectedTower();
};
fireTrapBtn.down = function (x, y, obj) {
	if (currency < 700) return; // Not enough money
	selectedTowerType = 'fireTrap';
	selectedTowerCost = 700;
	placementMode = true;
	turretToPlace = {
		type: 'fireTrap',
		cost: 700
	};
	highlightSelectedTower();
};
var selectedTurret = null;
var placementMode = false;
var turretToPlace = null;
var frozenTurrets = [];
var freezeEffectActive = false;
var freezeEffectTimer = 0;
var freezeEffectDuration = 120; // 2 seconds at 60fps
function selectTurret(turret) {
	// Deselect previous turret
	if (selectedTurret) {
		selectedTurret.rangeIndicator.alpha = 0.25;
		// Hide cross indicator on previous turret
		selectedTurret.crossIndicator.alpha = 0;
	}
	selectedTurret = turret;
	// Highlight selected turret
	selectedTurret.rangeIndicator.alpha = 0.5;
	// Show cross indicator
	selectedTurret.crossIndicator.alpha = 1.0;
	sellBtn.alpha = 1.0; // Enable sell button
	upgradeBtn.alpha = 1.0; // Enable upgrade button
	// Update button texts with prices
	sellBtn.setText('SELL\nTURRET\n$' + selectedTurret.sellPrice);
	upgradeBtn.setText('UPGRADE\nLv.' + selectedTurret.upgradeLevel + ' → ' + (selectedTurret.upgradeLevel + 1) + '\n$' + selectedTurret.upgradeCost);
	LK.effects.flashObject(selectedTurret, 0x00FF00, 300);
}
function deselectTurret() {
	if (selectedTurret) {
		selectedTurret.rangeIndicator.alpha = 0.25;
		// Hide cross indicator
		selectedTurret.crossIndicator.alpha = 0;
	}
	selectedTurret = null;
	sellBtn.alpha = 0.5; // Disable sell button
	upgradeBtn.alpha = 0.5; // Disable upgrade button
	sellBtn.setText('SELL\nTURRET\n$0'); // Reset text
	upgradeBtn.setText('UPGRADE\nTURRET\n$0'); // Reset text
}
function sellTurret() {
	if (!selectedTurret) return;
	// Give money back
	currency += selectedTurret.sellPrice;
	updateCurrencyDisplay();
	// Remove turret from game
	for (var i = turrets.length - 1; i >= 0; i--) {
		if (turrets[i] === selectedTurret) {
			turrets.splice(i, 1);
			break;
		}
	}
	selectedTurret.destroy();
	// Flash green effect
	LK.effects.flashScreen(0x00FF00, 300);
	deselectTurret();
}
function upgradeTurret() {
	if (!selectedTurret) return;
	if (selectedTurret.upgradeLevel >= 5) return; // Max upgrade level
	if (currency < selectedTurret.upgradeCost) return; // Not enough money
	// Deduct cost
	currency -= selectedTurret.upgradeCost;
	updateCurrencyDisplay();
	// Upgrade turret
	selectedTurret.upgradeLevel++;
	selectedTurret.updateTowerProperties();
	// Update button texts with new prices
	sellBtn.setText('SELL\nTURRET\n$' + selectedTurret.sellPrice);
	upgradeBtn.setText('UPGRADE\nLv.' + selectedTurret.upgradeLevel + ' → ' + (selectedTurret.upgradeLevel + 1) + '\n$' + selectedTurret.upgradeCost);
	// Visual effects
	LK.effects.flashObject(selectedTurret, 0x00FFFF, 500);
	// Change turret color based on upgrade level
	if (selectedTurret.upgradeLevel >= 3) {
		selectedTurret.children[0].tint = 0xFFFFFF; // White for high level
	} else if (selectedTurret.upgradeLevel >= 2) {
		selectedTurret.children[0].tint = 0xFFFF00; // Yellow for mid level
	}
}
function activateZombieFreezeEffect() {
	if (freezeEffectActive) return; // Already active
	if (turrets.length === 0) return; // No turrets to freeze
	// Randomly select up to 2 turrets to freeze
	var availableTurrets = turrets.slice(); // Copy array
	var turretsToFreeze = Math.min(2, availableTurrets.length);
	frozenTurrets = [];
	for (var i = 0; i < turretsToFreeze; i++) {
		var randomIndex = Math.floor(Math.random() * availableTurrets.length);
		var turretToFreeze = availableTurrets[randomIndex];
		availableTurrets.splice(randomIndex, 1); // Remove from available list
		frozenTurrets.push(turretToFreeze);
		// Add freeze visual effect
		turretToFreeze.isFrozen = true;
		turretToFreeze.children[0].tint = 0x00CCFF; // Ice blue tint
		// Add ice effect around turret
		var iceEffect = turretToFreeze.addChild(LK.getAsset('buildSpot', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.6,
			tint: 0x00CCFF,
			scaleX: 1.5,
			scaleY: 1.5
		}));
		turretToFreeze.iceEffect = iceEffect;
		// Flash effect
		LK.effects.flashObject(turretToFreeze, 0x00CCFF, 300);
	}
	// Activate freeze effect
	freezeEffectActive = true;
	freezeEffectTimer = 0;
	// Screen flash to indicate freeze effect
	LK.effects.flashScreen(0x00CCFF, 500);
}
function updateFreezeEffect() {
	if (!freezeEffectActive) return;
	freezeEffectTimer += speedMultiplier;
	if (freezeEffectTimer >= freezeEffectDuration) {
		// Remove freeze effect
		for (var i = 0; i < frozenTurrets.length; i++) {
			var turret = frozenTurrets[i];
			if (turret.parent) {
				// Check if turret still exists
				turret.isFrozen = false;
				turret.children[0].tint = 0xFFFFFF; // Reset tint
				if (turret.iceEffect) {
					turret.iceEffect.destroy();
					turret.iceEffect = null;
				}
			}
		}
		frozenTurrets = [];
		freezeEffectActive = false;
		freezeEffectTimer = 0;
	}
}
// Game-wide click handler - enable turret placement when in placement mode
game.down = function (x, y, obj) {
	// Check if click is in game area (not on UI elements)
	if (y > 2300) return; // Don't place on bottom UI
	if (placementMode && turretToPlace) {
		// Check if position is too close to path
		var tooCloseToPath = false;
		for (var i = 0; i < gamePath.length - 1; i++) {
			var start = gamePath[i];
			var end = gamePath[i + 1];
			var distance = distanceToLineSegment(x, y, start.x, start.y, end.x, end.y);
			if (distance < 80) {
				// Minimum distance from path
				tooCloseToPath = true;
				break;
			}
		}
		if (tooCloseToPath) {
			LK.effects.flashScreen(0xFF0000, 200); // Red flash for invalid placement
			return;
		}
		// Check if position overlaps with existing turrets
		var tooCloseToTurret = false;
		for (var i = 0; i < turrets.length; i++) {
			var turret = turrets[i];
			var dx = turret.x - x;
			var dy = turret.y - y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < 120) {
				// Minimum distance between turrets
				tooCloseToTurret = true;
				break;
			}
		}
		if (tooCloseToTurret) {
			LK.effects.flashScreen(0xFF0000, 200); // Red flash for invalid placement
			return;
		}
		if (turretToPlace.type === 'fireTrap') {
			// Place fire trap (can be placed anywhere)
			var fireTrap = new FireTrap();
			fireTrap.x = x;
			fireTrap.y = y;
			currency -= turretToPlace.cost;
			updateCurrencyDisplay();
			fireTraps.push(fireTrap);
			game.addChild(fireTrap);
			// Flash orange when built
			LK.effects.flashObject(fireTrap, 0xFF4400, 500);
		} else {
			// Place turret
			var turret = new Turret();
			turret.x = x;
			turret.y = y;
			turret.towerType = turretToPlace.type;
			turret.cost = turretToPlace.cost;
			turret.updateTowerProperties();
			currency -= turretToPlace.cost;
			updateCurrencyDisplay();
			turrets.push(turret);
			game.addChild(turret);
			// Flash green when built
			var flashColor = turretToPlace.type === 'laser' ? 0x4444FF : turretToPlace.type === 'machineGun' ? 0xFF6600 : turretToPlace.type === 'missile' ? 0xFF4444 : turretToPlace.type === 'fire' ? 0xFF8800 : turretToPlace.type === 'fireMachine' ? 0xFF2200 : 0xFFFF00;
			LK.effects.flashObject(turret, flashColor, 500);
		}
		// Exit placement mode
		placementMode = false;
		turretToPlace = null;
	} else {
		// Deselect turret when clicking empty area
		deselectTurret();
	}
};
game.update = function () {
	// Spawn zombies
	if (waveActive && zombiesSpawned < zombiesToSpawn) {
		spawnTimer += speedMultiplier;
		// Adjust spawn rate based on wave - slower spawning for first level
		var currentSpawnRate = wave === 1 ? baseSpawnRate * 1.5 : baseSpawnRate;
		if (spawnTimer >= currentSpawnRate) {
			spawnZombie();
			spawnTimer = 0;
		}
	}
	// Clean up dead zombies
	for (var i = zombies.length - 1; i >= 0; i--) {
		if (zombies[i].isDead) {
			zombies[i].destroy();
			zombies.splice(i, 1);
		}
	}
	// Update freeze effect
	updateFreezeEffect();
	checkWaveComplete();
};

===================================================================
--- original.js
+++ change.js
@@ -811,17 +811,17 @@
 	fill: 0xFF6600
 });
 machineGunBtn.anchor.set(0, 0.5); // Left-aligned anchor
 machineGunBtn.x = towerMenuX;
-machineGunBtn.y = towerMenuStartY + towerMenuSpacing * 1;
+machineGunBtn.y = towerMenuStartY + towerMenuSpacing * 5;
 game.addChild(machineGunBtn);
 var fireTrapBtn = new Text2('Fire Trap\n$700', {
 	size: 48,
 	fill: 0xFF4400
 });
 fireTrapBtn.anchor.set(0, 0.5); // Left-aligned anchor
 fireTrapBtn.x = towerMenuX;
-fireTrapBtn.y = towerMenuStartY + towerMenuSpacing * 6;
+fireTrapBtn.y = towerMenuStartY + towerMenuSpacing * 7;
 game.addChild(fireTrapBtn);
 var waveTxt = new Text2('Level ' + wave, {
 	size: 80,
 	fill: 0x44FF44