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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function (tower, target, towerType) {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.tower = tower;
	self.target = target;
	self.towerType = towerType;
	self.speed = 8;
	// Calculate direction from tower to target
	var dx = target.x - tower.x;
	var dy = target.y - tower.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	self.vx = dx / distance * self.speed;
	self.vy = dy / distance * self.speed;
	self.update = function () {
		self.x += self.vx;
		self.y += self.vy;
		// Check collision with intended target only
		if (self.target && self.target.parent && self.intersects(self.target)) {
			self.hit();
			return;
		}
		// Remove bullet if target is destroyed
		if (!self.target || !self.target.parent) {
			self.destroy();
			for (var i = bullets.length - 1; i >= 0; i--) {
				if (bullets[i] === self) {
					bullets.splice(i, 1);
					break;
				}
			}
			return;
		}
		// Remove if off screen
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.destroy();
			for (var i = bullets.length - 1; i >= 0; i--) {
				if (bullets[i] === self) {
					bullets.splice(i, 1);
					break;
				}
			}
		}
	};
	self.hit = function () {
		LK.getSound('hit').play();
		if (self.towerType === 'splash') {
			// Splash damage
			for (var i = enemies.length - 1; i >= 0; i--) {
				var enemy = enemies[i];
				if (enemy && enemy.parent) {
					var dx = enemy.x - self.x;
					var dy = enemy.y - self.y;
					var distance = Math.sqrt(dx * dx + dy * dy);
					if (distance <= self.tower.splashRadius) {
						var killed = enemy.takeDamage(self.tower.damage);
						if (killed) {
							coins += enemy.reward;
							enemy.destroy();
							enemies.splice(i, 1);
						}
					}
				}
			}
			// Create explosion effect
			var explosion = LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			explosion.x = self.x;
			explosion.y = self.y;
			explosion.alpha = 0.7;
			game.addChild(explosion);
			tween(explosion, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
		} else {
			// Regular damage
			if (self.target && self.target.parent) {
				var killed = self.target.takeDamage(self.tower.damage);
				if (killed) {
					coins += self.target.reward;
					self.target.destroy();
					var targetIndex = enemies.indexOf(self.target);
					if (targetIndex !== -1) {
						enemies.splice(targetIndex, 1);
					}
				}
				// Apply slow effect if slow tower
				if (self.towerType === 'slow' && !killed) {
					self.target.applySlow(self.tower.slowFactor, self.tower.slowDuration);
				}
			}
		}
		// Remove bullet
		self.destroy();
		for (var i = bullets.length - 1; i >= 0; i--) {
			if (bullets[i] === self) {
				bullets.splice(i, 1);
				break;
			}
		}
	};
	return self;
});
// Game variables
var Enemy = Container.expand(function (type, pathIndex) {
	var self = Container.call(this);
	// Enemy properties based on type
	var enemyConfig = {
		basic: {
			asset: 'basicEnemy',
			health: 100,
			speed: 2,
			reward: 10
		},
		fast: {
			asset: 'fastEnemy',
			health: 60,
			speed: 4,
			reward: 15
		},
		tank: {
			asset: 'tankEnemy',
			health: 300,
			speed: 1,
			reward: 25
		},
		boss: {
			asset: 'tankEnemy',
			health: 1000,
			speed: 1.5,
			reward: 100
		}
	};
	var config = enemyConfig[type] || enemyConfig.basic;
	var enemyGraphics = self.attachAsset(config.asset, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.maxHealth = config.health;
	self.health = config.health;
	self.speed = config.speed;
	self.reward = config.reward;
	self.pathIndex = pathIndex || 0;
	self.slowEffect = 1;
	self.slowDuration = 0;
	// Health bar
	var healthBarBg = LK.getAsset('pathTile', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.6,
		scaleY: 0.1,
		y: -40
	});
	healthBarBg.tint = 0x333333;
	self.addChild(healthBarBg);
	var healthBar = LK.getAsset('pathTile', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.6,
		scaleY: 0.1,
		y: -40
	});
	healthBar.tint = 0x00FF00;
	self.addChild(healthBar);
	self.healthBar = healthBar;
	self.takeDamage = function (damage) {
		self.health -= damage;
		var healthPercent = Math.max(0, self.health / self.maxHealth);
		self.healthBar.scaleX = 0.6 * healthPercent;
		// Health bar color changes
		if (healthPercent > 0.6) {
			self.healthBar.tint = 0x00FF00;
		} else if (healthPercent > 0.3) {
			self.healthBar.tint = 0xFFFF00;
		} else {
			self.healthBar.tint = 0xFF0000;
		}
		// Flash effect
		tween(enemyGraphics, {
			tint: 0xFF0000
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(enemyGraphics, {
					tint: 0xFFFFFF
				}, {
					duration: 100
				});
			}
		});
		return self.health <= 0;
	};
	self.applySlow = function (factor, duration) {
		self.slowEffect = Math.min(self.slowEffect, factor);
		self.slowDuration = Math.max(self.slowDuration, duration);
	};
	self.update = function () {
		// Update slow effect
		if (self.slowDuration > 0) {
			self.slowDuration--;
			if (self.slowDuration <= 0) {
				self.slowEffect = 1;
			}
		}
		// Move along path
		if (self.pathIndex < gamePath.length - 1 && gamePath[self.pathIndex + 1]) {
			var currentTarget = gamePath[self.pathIndex + 1];
			var dx = currentTarget.x - self.x;
			var dy = currentTarget.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < 20) {
				self.pathIndex++;
				if (self.pathIndex >= gamePath.length - 1) {
					// Reached base
					baseHealth--;
					return;
				}
			} else {
				var moveSpeed = self.speed * self.slowEffect;
				self.x += dx / distance * moveSpeed;
				self.y += dy / distance * moveSpeed;
			}
		} else if (self.pathIndex >= gamePath.length - 1) {
			// Reached base
			baseHealth--;
			return;
		}
	};
	return self;
});
var Tower = Container.expand(function (type) {
	var self = Container.call(this);
	// Tower configurations
	var towerConfig = {
		basic: {
			asset: 'basicTower',
			damage: 25,
			range: 180,
			fireRate: 60,
			cost: 100,
			upgradeCost: 75
		},
		splash: {
			asset: 'splashTower',
			damage: 40,
			range: 150,
			fireRate: 90,
			cost: 200,
			upgradeCost: 150,
			splashRadius: 80
		},
		slow: {
			asset: 'slowTower',
			damage: 15,
			range: 200,
			fireRate: 45,
			cost: 150,
			upgradeCost: 100,
			slowFactor: 0.5,
			slowDuration: 120
		}
	};
	var config = towerConfig[type] || towerConfig.basic;
	var towerGraphics = self.attachAsset(config.asset, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = type;
	self.damage = config.damage;
	self.range = config.range;
	self.fireRate = config.fireRate;
	self.cost = config.cost;
	self.upgradeCost = config.upgradeCost;
	self.splashRadius = config.splashRadius;
	self.slowFactor = config.slowFactor;
	self.slowDuration = config.slowDuration;
	self.lastShot = 0;
	self.level = 1;
	// Range indicator (hidden by default)
	var rangeIndicator = LK.getAsset('pathTile', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: self.range / 50,
		scaleY: self.range / 50
	});
	rangeIndicator.tint = 0x00FF00;
	rangeIndicator.alpha = 0.2;
	rangeIndicator.visible = false;
	self.addChild(rangeIndicator);
	self.rangeIndicator = rangeIndicator;
	self.showRange = function () {
		self.rangeIndicator.visible = true;
	};
	self.hideRange = function () {
		self.rangeIndicator.visible = false;
	};
	self.canShoot = function () {
		return LK.ticks - self.lastShot >= self.fireRate;
	};
	self.findTarget = function () {
		var closestEnemy = null;
		var closestDistance = self.range;
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			if (enemy && enemy.parent) {
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance <= self.range && distance < closestDistance) {
					closestEnemy = enemy;
					closestDistance = distance;
				}
			}
		}
		return closestEnemy;
	};
	self.shoot = function (target) {
		if (!self.canShoot()) return;
		self.lastShot = LK.ticks;
		// Create bullet
		var bullet = new Bullet(self, target, self.type);
		bullet.x = self.x;
		bullet.y = self.y;
		bullets.push(bullet);
		game.addChild(bullet);
		LK.getSound('shoot').play();
	};
	self.upgrade = function () {
		if (coins >= self.upgradeCost) {
			coins -= self.upgradeCost;
			self.level++;
			self.damage = Math.floor(self.damage * 1.5);
			self.range = Math.floor(self.range * 1.1);
			self.upgradeCost = Math.floor(self.upgradeCost * 1.8);
			// Visual upgrade effect
			tween(towerGraphics, {
				scaleX: 1.2,
				scaleY: 1.2
			}, {
				duration: 200,
				onFinish: function onFinish() {
					tween(towerGraphics, {
						scaleX: 1,
						scaleY: 1
					}, {
						duration: 200
					});
				}
			});
			// Update range indicator
			self.rangeIndicator.scaleX = self.range / 50;
			self.rangeIndicator.scaleY = self.range / 50;
			return true;
		}
		return false;
	};
	self.down = function (x, y, obj) {
		selectedTower = self;
		self.showRange();
		showTowerInfo(self);
	};
	self.update = function () {
		// Find target in range
		var target = self.findTarget();
		if (target) {
			// Rotate tower towards target
			var angle = Math.atan2(target.y - self.y, target.x - self.x);
			towerGraphics.rotation = angle;
			// Shoot if ready
			if (self.canShoot()) {
				self.shoot(target);
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x4a6b3a
});

/**** 
* Game Code
****/ 
// Game variables
// Tower assets
// Enemy assets
// Game elements
// Sounds
var gamePath = [{
	x: 100,
	y: 400
}, {
	x: 500,
	y: 400
}, {
	x: 500,
	y: 800
}, {
	x: 900,
	y: 800
}, {
	x: 900,
	y: 1200
}, {
	x: 1400,
	y: 1200
}, {
	x: 1400,
	y: 1600
}, {
	x: 1800,
	y: 1600
}];
var enemies = [];
var towers = [];
var bullets = [];
var coins = 300;
var baseHealth = 20;
var currentWave = 1;
var enemiesSpawned = 0;
var enemiesPerWave = 5;
var waveDelay = 0;
var selectedTower = null;
var towerInfoPanel = null;
var bossWave = false;
var bossSpawned = false;
var pathExtensionFactor = 1.0;
// Draw path with visible tiles
for (var i = 0; i < gamePath.length; i++) {
	var pathTile = LK.getAsset('pathTile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	pathTile.x = gamePath[i].x;
	pathTile.y = gamePath[i].y;
	pathTile.alpha = 0.8;
	pathTile.tint = 0x8B4513;
	game.addChild(pathTile);
}
// Draw connecting path segments
for (var i = 0; i < gamePath.length - 1; i++) {
	var startPoint = gamePath[i];
	var endPoint = gamePath[i + 1];
	var dx = endPoint.x - startPoint.x;
	var dy = endPoint.y - startPoint.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	var segments = Math.ceil(distance / 50);
	for (var j = 1; j < segments; j++) {
		var t = j / segments;
		var segmentX = startPoint.x + dx * t;
		var segmentY = startPoint.y + dy * t;
		var segmentTile = LK.getAsset('pathTile', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.8,
			scaleY: 0.8
		});
		segmentTile.x = segmentX;
		segmentTile.y = segmentY;
		segmentTile.alpha = 0.6;
		segmentTile.tint = 0x8B4513;
		game.addChild(segmentTile);
	}
}
// Create base
var base = LK.getAsset('base', {
	anchorX: 0.5,
	anchorY: 0.5
});
base.x = gamePath[gamePath.length - 1].x;
base.y = gamePath[gamePath.length - 1].y;
game.addChild(base);
// Create baslangic image at spawn point
var baslangicImage = LK.getAsset('baslangic', {
	anchorX: 0.5,
	anchorY: 0.5
});
baslangicImage.x = gamePath[0].x;
baslangicImage.y = gamePath[0].y;
game.addChild(baslangicImage);
// UI Elements
var coinsText = new Text2('Coins: ' + coins, {
	size: 50,
	fill: 0xFFD700
});
coinsText.anchor.set(0, 0);
coinsText.x = 150;
coinsText.y = 20;
LK.gui.topLeft.addChild(coinsText);
var healthText = new Text2('Base Health: ' + baseHealth, {
	size: 50,
	fill: 0xFF0000
});
healthText.anchor.set(1, 0);
healthText.y = 20;
LK.gui.topRight.addChild(healthText);
var waveText = new Text2('Wave: ' + currentWave, {
	size: 50,
	fill: 0xFFFFFF
});
waveText.anchor.set(0.5, 0);
waveText.y = 20;
LK.gui.top.addChild(waveText);
// Tower selection buttons
var basicTowerBtn = new Text2('Basic (100)', {
	size: 40,
	fill: 0x4444FF
});
basicTowerBtn.anchor.set(0, 1);
basicTowerBtn.x = 20;
basicTowerBtn.y = -20;
LK.gui.bottomLeft.addChild(basicTowerBtn);
var basicTowerImage = LK.getAsset('basicTower', {
	anchorX: 0,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
basicTowerImage.x = 220;
basicTowerImage.y = -20;
LK.gui.bottomLeft.addChild(basicTowerImage);
var splashTowerBtn = new Text2('Splash (200)', {
	size: 40,
	fill: 0xFF4444
});
splashTowerBtn.anchor.set(0, 1);
splashTowerBtn.x = 20;
splashTowerBtn.y = -80;
LK.gui.bottomLeft.addChild(splashTowerBtn);
var splashTowerImage = LK.getAsset('splashTower', {
	anchorX: 0,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
splashTowerImage.x = 220;
splashTowerImage.y = -80;
LK.gui.bottomLeft.addChild(splashTowerImage);
var slowTowerBtn = new Text2('Slow (150)', {
	size: 40,
	fill: 0x44FF44
});
slowTowerBtn.anchor.set(0, 1);
slowTowerBtn.x = 20;
slowTowerBtn.y = -140;
LK.gui.bottomLeft.addChild(slowTowerBtn);
var slowTowerImage = LK.getAsset('slowTower', {
	anchorX: 0,
	anchorY: 1,
	scaleX: 0.8,
	scaleY: 0.8
});
slowTowerImage.x = 220;
slowTowerImage.y = -140;
LK.gui.bottomLeft.addChild(slowTowerImage);
// Selected tower type
var selectedTowerType = 'basic';
// Add background highlights for tower selection
var basicTowerBg = LK.getAsset('pathTile', {
	anchorX: 0,
	anchorY: 0.5,
	scaleX: 2.5,
	scaleY: 0.8
});
basicTowerBg.tint = 0x00FF00;
basicTowerBg.alpha = 0.3;
basicTowerBg.x = 10;
basicTowerBg.y = -40;
LK.gui.bottomLeft.addChild(basicTowerBg);
var splashTowerBg = LK.getAsset('pathTile', {
	anchorX: 0,
	anchorY: 0.5,
	scaleX: 2.5,
	scaleY: 0.8
});
splashTowerBg.tint = 0x00FF00;
splashTowerBg.alpha = 0;
splashTowerBg.x = 10;
splashTowerBg.y = -100;
LK.gui.bottomLeft.addChild(splashTowerBg);
var slowTowerBg = LK.getAsset('pathTile', {
	anchorX: 0,
	anchorY: 0.5,
	scaleX: 2.5,
	scaleY: 0.8
});
slowTowerBg.tint = 0x00FF00;
slowTowerBg.alpha = 0;
slowTowerBg.x = 10;
slowTowerBg.y = -160;
LK.gui.bottomLeft.addChild(slowTowerBg);
// Helper functions
function updateUI() {
	coinsText.setText('Coins: ' + coins);
	healthText.setText('Base Health: ' + baseHealth);
	waveText.setText('Wave: ' + currentWave + (bossWave ? ' (BOSS)' : ''));
	// Update button colors based on affordability
	basicTowerBtn.tint = coins >= 100 ? 0x4444FF : 0x666666;
	splashTowerBtn.tint = coins >= 200 ? 0xFF4444 : 0x666666;
	slowTowerBtn.tint = coins >= 150 ? 0x44FF44 : 0x666666;
	// Update tower selection highlighting
	basicTowerBg.alpha = selectedTowerType === 'basic' ? 0.3 : 0;
	splashTowerBg.alpha = selectedTowerType === 'splash' ? 0.3 : 0;
	slowTowerBg.alpha = selectedTowerType === 'slow' ? 0.3 : 0;
	// Add pulsing animation to selected tower
	var selectedBg = selectedTowerType === 'basic' ? basicTowerBg : selectedTowerType === 'splash' ? splashTowerBg : slowTowerBg;
	if (selectedBg.alpha > 0) {
		var pulseAlpha = 0.3 + Math.sin(LK.ticks * 0.1) * 0.1;
		selectedBg.alpha = pulseAlpha;
	}
}
function canPlaceTower(x, y) {
	// Check if position is not on path points
	for (var i = 0; i < gamePath.length; i++) {
		var pathPoint = gamePath[i];
		var distance = Math.sqrt((x - pathPoint.x) * (x - pathPoint.x) + (y - pathPoint.y) * (y - pathPoint.y));
		if (distance < 80) {
			return false;
		}
	}
	// Check if position is not on path segments
	for (var i = 0; i < gamePath.length - 1; i++) {
		var startPoint = gamePath[i];
		var endPoint = gamePath[i + 1];
		// Calculate distance from point to line segment
		var A = x - startPoint.x;
		var B = y - startPoint.y;
		var C = endPoint.x - startPoint.x;
		var D = endPoint.y - startPoint.y;
		var dot = A * C + B * D;
		var lenSq = C * C + D * D;
		var param = lenSq != 0 ? dot / lenSq : -1;
		var xx, yy;
		if (param < 0) {
			xx = startPoint.x;
			yy = startPoint.y;
		} else if (param > 1) {
			xx = endPoint.x;
			yy = endPoint.y;
		} else {
			xx = startPoint.x + param * C;
			yy = startPoint.y + param * D;
		}
		var dx = x - xx;
		var dy = y - yy;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 80) {
			return false;
		}
	}
	// Check if position is not too close to other towers
	for (var i = 0; i < towers.length; i++) {
		var tower = towers[i];
		var distance = Math.sqrt((x - tower.x) * (x - tower.x) + (y - tower.y) * (y - tower.y));
		if (distance < 100) {
			return false;
		}
	}
	return true;
}
function spawnEnemy() {
	var enemyTypes = ['basic', 'fast', 'tank'];
	var waveMultiplier = Math.floor((currentWave - 1) / 3);
	// Choose enemy type based on wave
	var enemyType = 'basic';
	if (currentWave > 3) {
		enemyType = enemyTypes[Math.floor(Math.random() * 2)]; // basic or fast
	}
	if (currentWave > 6) {
		enemyType = enemyTypes[Math.floor(Math.random() * 3)]; // all types
	}
	var enemy = new Enemy(enemyType, 0);
	enemy.x = gamePath[0].x;
	enemy.y = gamePath[0].y;
	// Scale health for later waves
	enemy.maxHealth *= 1 + waveMultiplier * 0.5;
	enemy.health = enemy.maxHealth;
	enemies.push(enemy);
	game.addChild(enemy);
	enemiesSpawned++;
}
function extendPathOnly() {
	// Clear existing path tiles
	for (var i = 0; i < game.children.length; i++) {
		var child = game.children[i];
		if (child.tint === 0x8B4513) {
			child.destroy();
			i--;
		}
	}
	// Extend path by 5%
	pathExtensionFactor += 0.05;
	// Keep the same path shape but add more points to extend length
	var originalPath = [{
		x: 100,
		y: 400
	}, {
		x: 500,
		y: 400
	}, {
		x: 500,
		y: 800
	}, {
		x: 900,
		y: 800
	}, {
		x: 900,
		y: 1200
	}, {
		x: 1400,
		y: 1200
	}, {
		x: 1400,
		y: 1600
	}, {
		x: 1800,
		y: 1600
	}];
	// Calculate total original path length
	var totalLength = 0;
	for (var i = 0; i < originalPath.length - 1; i++) {
		var dx = originalPath[i + 1].x - originalPath[i].x;
		var dy = originalPath[i + 1].y - originalPath[i].y;
		totalLength += Math.sqrt(dx * dx + dy * dy);
	}
	// Extend the path by interpolating more points
	var extendedLength = totalLength * pathExtensionFactor;
	var segmentLength = extendedLength / (originalPath.length - 1);
	gamePath = [];
	for (var i = 0; i < originalPath.length - 1; i++) {
		var start = originalPath[i];
		var end = originalPath[i + 1];
		var dx = end.x - start.x;
		var dy = end.y - start.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var segments = Math.ceil(segmentLength / distance);
		for (var j = 0; j < segments; j++) {
			var t = j / segments;
			gamePath.push({
				x: start.x + dx * t,
				y: start.y + dy * t
			});
		}
	}
	// Add final point
	gamePath.push(originalPath[originalPath.length - 1]);
	// Redraw path tiles
	for (var i = 0; i < gamePath.length; i++) {
		var pathTile = LK.getAsset('pathTile', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		pathTile.x = gamePath[i].x;
		pathTile.y = gamePath[i].y;
		pathTile.alpha = 0.8;
		pathTile.tint = 0x8B4513;
		game.addChild(pathTile);
	}
	// Draw connecting segments
	for (var i = 0; i < gamePath.length - 1; i++) {
		var startPoint = gamePath[i];
		var endPoint = gamePath[i + 1];
		var dx = endPoint.x - startPoint.x;
		var dy = endPoint.y - startPoint.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var segments = Math.ceil(distance / 50);
		for (var j = 1; j < segments; j++) {
			var t = j / segments;
			var segmentX = startPoint.x + dx * t;
			var segmentY = startPoint.y + dy * t;
			var segmentTile = LK.getAsset('pathTile', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.8,
				scaleY: 0.8
			});
			segmentTile.x = segmentX;
			segmentTile.y = segmentY;
			segmentTile.alpha = 0.6;
			segmentTile.tint = 0x8B4513;
			game.addChild(segmentTile);
		}
	}
	// Update base position
	base.x = gamePath[gamePath.length - 1].x;
	base.y = gamePath[gamePath.length - 1].y;
}
function clearAllTowers() {
	for (var i = towers.length - 1; i >= 0; i--) {
		towers[i].destroy();
	}
	towers = [];
}
function spawnBossEnemy() {
	var waveMultiplier = Math.floor((currentWave - 1) / 3);
	var totalEnemyHealth = 0;
	var enemyCount = enemiesPerWave * currentWave;
	// Calculate total health of all enemies that would spawn in wave 5
	for (var i = 0; i < enemyCount; i++) {
		var baseHealth = 100; // Basic enemy health
		if (currentWave > 3) baseHealth = 80; // Mix of basic and fast
		if (currentWave > 6) baseHealth = 120; // Mix of all types
		totalEnemyHealth += baseHealth * (1 + waveMultiplier * 0.5);
	}
	var boss = new Enemy('boss', 0);
	boss.x = gamePath[0].x;
	boss.y = gamePath[0].y;
	boss.maxHealth = totalEnemyHealth;
	boss.health = totalEnemyHealth;
	boss.reward = 200;
	enemies.push(boss);
	game.addChild(boss);
	bossSpawned = true;
}
function showTowerInfo(tower) {
	if (!tower) return;
	if (towerInfoPanel) {
		towerInfoPanel.destroy();
	}
	var panel = LK.getAsset('base', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 1.5
	});
	panel.tint = 0x333333;
	panel.alpha = 0.8;
	panel.x = tower.x;
	panel.y = Math.max(150, tower.y - 150);
	game.addChild(panel);
	towerInfoPanel = panel;
	var infoText = new Text2('Level: ' + tower.level + '\nDamage: ' + tower.damage + '\nUpgrade: ' + tower.upgradeCost, {
		size: 25,
		fill: 0xFFFFFF
	});
	infoText.anchor.set(0.5, 0.5);
	infoText.x = 0;
	infoText.y = -25;
	panel.addChild(infoText);
	if (coins >= tower.upgradeCost) {
		var upgradeBtn = new Text2('UPGRADE', {
			size: 30,
			fill: 0x00FF00
		});
		upgradeBtn.anchor.set(0.5, 0.5);
		upgradeBtn.y = 35;
		panel.addChild(upgradeBtn);
	}
}
// Event handlers
basicTowerBtn.down = function () {
	selectedTowerType = 'basic';
	if (selectedTower) {
		selectedTower.hideRange();
		selectedTower = null;
	}
	if (towerInfoPanel) {
		towerInfoPanel.destroy();
		towerInfoPanel = null;
	}
};
splashTowerBtn.down = function () {
	selectedTowerType = 'splash';
	if (selectedTower) {
		selectedTower.hideRange();
		selectedTower = null;
	}
	if (towerInfoPanel) {
		towerInfoPanel.destroy();
		towerInfoPanel = null;
	}
};
slowTowerBtn.down = function () {
	selectedTowerType = 'slow';
	if (selectedTower) {
		selectedTower.hideRange();
		selectedTower = null;
	}
	if (towerInfoPanel) {
		towerInfoPanel.destroy();
		towerInfoPanel = null;
	}
};
game.down = function (x, y, obj) {
	// Check if clicking on upgrade button
	if (towerInfoPanel && selectedTower && obj && obj.position && obj.parent) {
		try {
			var localPos = towerInfoPanel.toLocal(obj.parent.toGlobal(obj.position));
			if (Math.abs(localPos.x) < 60 && Math.abs(localPos.y - 30) < 20 && coins >= selectedTower.upgradeCost) {
				selectedTower.upgrade();
				showTowerInfo(selectedTower);
				return;
			}
		} catch (e) {
			// Ignore positioning errors
		}
	}
	// Hide tower info if clicking elsewhere
	if (selectedTower) {
		selectedTower.hideRange();
		selectedTower = null;
	}
	if (towerInfoPanel) {
		towerInfoPanel.destroy();
		towerInfoPanel = null;
	}
	// Try to place tower
	var towerCost = selectedTowerType === 'basic' ? 100 : selectedTowerType === 'splash' ? 200 : 150;
	if (coins >= towerCost && canPlaceTower(x, y)) {
		var tower = new Tower(selectedTowerType);
		tower.x = x;
		tower.y = y;
		towers.push(tower);
		game.addChild(tower);
		coins -= towerCost;
		LK.getSound('place').play();
	}
};
// Main game loop
game.update = function () {
	// Spawn enemies
	if (bossWave) {
		// Boss wave spawning
		if (waveDelay <= 0 && !bossSpawned) {
			spawnBossEnemy();
			waveDelay = 0;
		} else {
			waveDelay--;
		}
	} else {
		// Normal wave spawning
		if (waveDelay <= 0 && enemiesSpawned < enemiesPerWave * currentWave) {
			spawnEnemy();
			waveDelay = 60; // 1 second between spawns
		} else {
			waveDelay--;
		}
	}
	// Check wave completion
	if (bossWave) {
		// Boss wave completion
		if (bossSpawned && enemies.length === 0) {
			currentWave++;
			enemiesSpawned = 0;
			coins += 100 * currentWave; // Bonus coins for completing boss wave
			waveDelay = 300; // 5 second break after boss
			bossWave = false;
			bossSpawned = false;
			// Only extend path length every 5 waves, keep towers
			if (currentWave % 5 === 1) {
				extendPathOnly();
			}
		}
	} else {
		// Normal wave completion
		if (enemiesSpawned >= enemiesPerWave * currentWave && enemies.length === 0) {
			// Check if this completes a set of 5 waves
			if (currentWave % 5 === 0) {
				// Start boss wave
				bossWave = true;
				bossSpawned = false;
				waveDelay = 180; // 3 second break before boss
			} else {
				// Normal wave progression
				currentWave++;
				enemiesSpawned = 0;
				coins += 25 * currentWave; // Bonus coins for completing wave
				waveDelay = 180; // 3 second break between waves
			}
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (enemy.pathIndex >= gamePath.length - 1) {
			// Enemy reached base
			baseHealth--;
			enemy.destroy();
			enemies.splice(i, 1);
		}
	}
	// Update towers
	for (var i = 0; i < towers.length; i++) {
		towers[i].update();
	}
	// Update bullets
	for (var i = 0; i < bullets.length; i++) {
		bullets[i].update();
	}
	// Check game over
	if (baseHealth <= 0) {
		LK.setScore(currentWave - 1);
		LK.showGameOver();
	}
	// Update UI
	updateUI();
};