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

/**** 
* Classes
****/ 
var AreaTower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('areaTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 160;
	self.damage = 2;
	self.areaDamage = 100; // Area damage radius
	self.fireRate = 90; // Slower fire rate due to area effect
	self.lastShot = 0;
	self.cost = 100;
	self.canShoot = function () {
		return LK.ticks - self.lastShot >= self.fireRate;
	};
	self.findTarget = function () {
		var closestEnemy = null;
		var closestDistance = Infinity;
		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 && distance < closestDistance) {
				closestDistance = distance;
				closestEnemy = enemy;
			}
		}
		return closestEnemy;
	};
	self.explode = function (targetX, targetY) {
		// Create explosion visual effect
		var explosion = game.addChild(LK.getAsset('explosion', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: targetX,
			y: targetY
		}));
		// Animate explosion
		tween(explosion, {
			scaleX: 2,
			scaleY: 2,
			alpha: 0
		}, {
			duration: 300,
			onFinish: function onFinish() {
				explosion.destroy();
			}
		});
		// Damage all enemies in area
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			var dx = enemy.x - targetX;
			var dy = enemy.y - targetY;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance <= self.areaDamage) {
				if (enemy.takeDamage(self.damage)) {
					playerMoney += enemy.reward;
					updateMoneyDisplay();
				}
			}
		}
	};
	self.shoot = function (target) {
		if (!self.canShoot()) return;
		self.explode(target.x, target.y);
		self.lastShot = LK.ticks;
		LK.getSound('shoot').play();
	};
	self.update = function () {
		var target = self.findTarget();
		if (target) {
			self.shoot(target);
		}
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.target = null;
	self.damage = 1;
	self.update = function () {
		if (!self.target || self.target.health <= 0) {
			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 (self.target.takeDamage(self.damage)) {
				// Enemy died, give reward
				playerMoney += self.target.reward;
				updateMoneyDisplay();
			}
			return true; // Mark for removal
		}
		self.x += dx / distance * self.speed;
		self.y += dy / distance * self.speed;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 3;
	self.maxHealth = 3;
	self.speed = 2;
	self.pathIndex = 0;
	self.reward = 10;
	self.takeDamage = function (damage) {
		self.health -= damage;
		// Flash red when hit
		tween(enemyGraphics, {
			tint: 0xFF0000
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(enemyGraphics, {
					tint: 0xFFFFFF
				}, {
					duration: 100
				});
			}
		});
		LK.getSound('enemyHit').play();
		return self.health <= 0;
	};
	self.update = function () {
		// Check if slow effect should end
		if (self.isSlowed && LK.ticks >= self.slowEndTick) {
			self.speed = self.originalSpeed;
			self.isSlowed = false;
			// Remove blue tint
			tween(self.children[0], {
				tint: 0xFFFFFF
			}, {
				duration: 200
			});
		}
		// Handle poison effect
		if (self.isPoisoned) {
			if (LK.ticks >= self.poisonEndTick) {
				self.isPoisoned = false;
				// Remove green tint
				tween(self.children[0], {
					tint: 0xFFFFFF
				}, {
					duration: 200
				});
			} else if (LK.ticks >= self.lastPoisonTick + self.poisonTickInterval) {
				if (self.takeDamage(self.poisonDamage)) {
					playerMoney += self.reward;
					updateMoneyDisplay();
				}
				self.lastPoisonTick = LK.ticks;
			}
		}
		if (self.pathIndex >= enemyPath.length) return;
		var targetPoint = enemyPath[self.pathIndex];
		var dx = targetPoint.x - self.x;
		var dy = targetPoint.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 10) {
			self.pathIndex++;
			if (self.pathIndex >= enemyPath.length) {
				// Enemy reached base
				playerLives--;
				return;
			}
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	return self;
});
var FastEnemy = Container.expand(function () {
	var self = Container.call(this);
	// Override graphics with different color
	self.children[0].destroy();
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemyGraphics.tint = 0xff9800; // Orange color
	self.health = 2;
	self.maxHealth = 2;
	self.speed = 4; // Faster than normal enemy
	self.reward = 15; // Higher reward
	return self;
});
var PoisonTower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('poisonTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 150;
	self.poisonDamage = 1;
	self.poisonDuration = 180; // 3 seconds of poison
	self.fireRate = 120; // Slower fire rate
	self.lastShot = 0;
	self.cost = 80;
	self.canShoot = function () {
		return LK.ticks - self.lastShot >= self.fireRate;
	};
	self.findTargetsInRange = function () {
		var targetsInRange = [];
		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) {
				targetsInRange.push(enemy);
			}
		}
		return targetsInRange;
	};
	self.applyPoison = function () {
		if (!self.canShoot()) return;
		var targets = self.findTargetsInRange();
		for (var i = 0; i < targets.length; i++) {
			var enemy = targets[i];
			if (!enemy.isPoisoned) {
				enemy.isPoisoned = true;
				enemy.poisonDamage = self.poisonDamage;
				enemy.poisonEndTick = LK.ticks + self.poisonDuration;
				enemy.poisonTickInterval = 30; // Damage every 0.5 seconds
				enemy.lastPoisonTick = LK.ticks;
				// Visual effect - tint enemy green
				tween(enemy.children[0], {
					tint: 0x4caf50
				}, {
					duration: 200
				});
			}
		}
		self.lastShot = LK.ticks;
	};
	self.update = function () {
		self.applyPoison();
	};
	return self;
});
var SlowTower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('slowTower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 180;
	self.slowEffect = 0.5; // Reduces enemy speed by 50%
	self.effectDuration = 120; // Effect lasts 2 seconds (120 ticks)
	self.fireRate = 90; // Slower than basic tower
	self.lastShot = 0;
	self.cost = 75;
	self.canShoot = function () {
		return LK.ticks - self.lastShot >= self.fireRate;
	};
	self.findTargetsInRange = function () {
		var targetsInRange = [];
		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) {
				targetsInRange.push(enemy);
			}
		}
		return targetsInRange;
	};
	self.applySlowEffect = function () {
		if (!self.canShoot()) return;
		var targets = self.findTargetsInRange();
		for (var i = 0; i < targets.length; i++) {
			var enemy = targets[i];
			if (!enemy.isSlowed) {
				enemy.isSlowed = true;
				enemy.originalSpeed = enemy.speed;
				enemy.speed = enemy.originalSpeed * self.slowEffect;
				enemy.slowEndTick = LK.ticks + self.effectDuration;
				// Visual effect - tint enemy blue
				tween(enemy.children[0], {
					tint: 0x2196f3
				}, {
					duration: 200
				});
			}
		}
		self.lastShot = LK.ticks;
	};
	self.update = function () {
		self.applySlowEffect();
	};
	return self;
});
var TankEnemy = Container.expand(function () {
	var self = Container.call(this);
	// Override graphics with different color and size
	self.children[0].destroy();
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	enemyGraphics.tint = 0x9c27b0; // Purple color
	self.health = 8;
	self.maxHealth = 8;
	self.speed = 1; // Slower than normal enemy
	self.reward = 25; // Higher reward
	return self;
});
var Tower = Container.expand(function () {
	var self = Container.call(this);
	var towerGraphics = self.attachAsset('tower', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.range = 200;
	self.damage = 1;
	self.fireRate = 60; // ticks between shots
	self.lastShot = 0;
	self.cost = 50;
	self.canShoot = function () {
		return LK.ticks - self.lastShot >= self.fireRate;
	};
	self.findTarget = function () {
		var closestEnemy = null;
		var closestDistance = Infinity;
		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 && distance < closestDistance) {
				closestDistance = distance;
				closestEnemy = enemy;
			}
		}
		return closestEnemy;
	};
	self.shoot = function (target) {
		if (!self.canShoot()) return;
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		bullet.target = target;
		bullet.damage = self.damage;
		bullets.push(bullet);
		game.addChild(bullet);
		self.lastShot = LK.ticks;
		LK.getSound('shoot').play();
	};
	self.update = function () {
		var target = self.findTarget();
		if (target) {
			self.shoot(target);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2E7D32
});

/**** 
* Game Code
****/ 
// Game variables
var playerMoney = 200;
var playerLives = 10;
var currentWave = 1;
var waveInProgress = false;
var shopOpen = false;
var placingTower = false;
var selectedTowerType = null;
// Game arrays
var towers = [];
var enemies = [];
var bullets = [];
// Enemy path (comprehensive brown winding path covering the entire screen)
var enemyPath = [{
	x: 0,
	y: 300
}, {
	x: 400,
	y: 300
}, {
	x: 400,
	y: 600
}, {
	x: 800,
	y: 600
}, {
	x: 800,
	y: 200
}, {
	x: 1200,
	y: 200
}, {
	x: 1200,
	y: 900
}, {
	x: 1600,
	y: 900
}, {
	x: 1600,
	y: 500
}, {
	x: 2000,
	y: 500
}, {
	x: 2000,
	y: 1100
}, {
	x: 1400,
	y: 1100
}, {
	x: 1400,
	y: 1400
}, {
	x: 600,
	y: 1400
}, {
	x: 600,
	y: 1800
}, {
	x: 1000,
	y: 1800
}, {
	x: 1000,
	y: 2200
}, {
	x: 1800,
	y: 2200
}, {
	x: 1800,
	y: 1600
}, {
	x: 2048,
	y: 1600
}];
// Create visual path segments
for (var i = 0; i < enemyPath.length - 1; i++) {
	var startPoint = enemyPath[i];
	var endPoint = enemyPath[i + 1];
	var segments = Math.ceil(Math.sqrt(Math.pow(endPoint.x - startPoint.x, 2) + Math.pow(endPoint.y - startPoint.y, 2)) / 50);
	for (var j = 0; j <= segments; j++) {
		var t = j / segments;
		var pathX = startPoint.x + (endPoint.x - startPoint.x) * t;
		var pathY = startPoint.y + (endPoint.y - startPoint.y) * t;
		var pathSegment = game.addChild(LK.getAsset('pathSegment', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: pathX,
			y: pathY
		}));
		pathSegment.alpha = 0.7;
	}
}
// Create base at end of path
var base = game.addChild(LK.getAsset('base', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: enemyPath[enemyPath.length - 1].x,
	y: enemyPath[enemyPath.length - 1].y
}));
// UI Elements
var moneyText = new Text2('Money: $' + playerMoney, {
	size: 60,
	fill: 0xFFFFFF
});
moneyText.anchor.set(0, 0);
moneyText.x = 120;
moneyText.y = 50;
LK.gui.topLeft.addChild(moneyText);
var livesText = new Text2('Lives: ' + playerLives, {
	size: 60,
	fill: 0xFFFFFF
});
livesText.anchor.set(0, 0);
livesText.x = 120;
livesText.y = 130;
LK.gui.topLeft.addChild(livesText);
var waveText = new Text2('Wave: ' + currentWave, {
	size: 60,
	fill: 0xFFFFFF
});
waveText.anchor.set(1, 0);
LK.gui.topRight.addChild(waveText);
// Shop button
var shopBtn = game.addChild(LK.getAsset('shopButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 200,
	y: 2500
}));
var shopBtnText = new Text2('SHOP', {
	size: 40,
	fill: 0xFFFFFF
});
shopBtnText.anchor.set(0.5, 0.5);
shopBtnText.x = shopBtn.x;
shopBtnText.y = shopBtn.y;
game.addChild(shopBtnText);
// Ready button
var readyBtn = game.addChild(LK.getAsset('readyButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 500,
	y: 2500
}));
var readyBtnText = new Text2('READY', {
	size: 40,
	fill: 0xFFFFFF
});
readyBtnText.anchor.set(0.5, 0.5);
readyBtnText.x = readyBtn.x;
readyBtnText.y = readyBtn.y;
game.addChild(readyBtnText);
// Shop panel (initially hidden)
var shopPanel = game.addChild(LK.getAsset('shopPanel', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
}));
shopPanel.visible = false;
var shopTitle = new Text2('TOWER SHOP', {
	size: 50,
	fill: 0xFFFFFF
});
shopTitle.anchor.set(0.5, 0);
shopTitle.x = shopPanel.x;
shopTitle.y = shopPanel.y - 450;
game.addChild(shopTitle);
// Basic tower button in shop
var basicTowerBtn = game.addChild(LK.getAsset('towerButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: shopPanel.x,
	y: shopPanel.y - 350
}));
basicTowerBtn.visible = false;
var basicTowerText = new Text2('Basic Tower\n$50', {
	size: 30,
	fill: 0xFFFFFF
});
basicTowerText.anchor.set(0.5, 0.5);
basicTowerText.x = basicTowerBtn.x;
basicTowerText.y = basicTowerBtn.y;
game.addChild(basicTowerText);
// Slow tower button in shop
var slowTowerBtn = game.addChild(LK.getAsset('towerButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: shopPanel.x,
	y: shopPanel.y - 200,
	color: 0x2196f3
}));
slowTowerBtn.visible = false;
var slowTowerText = new Text2('Slow Tower\n$75', {
	size: 30,
	fill: 0xFFFFFF
});
slowTowerText.anchor.set(0.5, 0.5);
slowTowerText.x = slowTowerBtn.x;
slowTowerText.y = slowTowerBtn.y;
game.addChild(slowTowerText);
// Area tower button in shop
var areaTowerBtn = game.addChild(LK.getAsset('towerButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: shopPanel.x,
	y: shopPanel.y - 50,
	color: 0xff9800
}));
areaTowerBtn.visible = false;
var areaTowerText = new Text2('Area Tower\n$100', {
	size: 30,
	fill: 0xFFFFFF
});
areaTowerText.anchor.set(0.5, 0.5);
areaTowerText.x = areaTowerBtn.x;
areaTowerText.y = areaTowerBtn.y;
game.addChild(areaTowerText);
// Poison tower button in shop
var poisonTowerBtn = game.addChild(LK.getAsset('towerButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: shopPanel.x,
	y: shopPanel.y + 100,
	color: 0x4caf50
}));
poisonTowerBtn.visible = false;
var poisonTowerText = new Text2('Poison Tower\n$80', {
	size: 30,
	fill: 0xFFFFFF
});
poisonTowerText.anchor.set(0.5, 0.5);
poisonTowerText.x = poisonTowerBtn.x;
poisonTowerText.y = poisonTowerBtn.y;
game.addChild(poisonTowerText);
// Close shop button
var closeShopBtn = game.addChild(LK.getAsset('towerButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: shopPanel.x,
	y: shopPanel.y + 400,
	color: 0xFF5722
}));
closeShopBtn.visible = false;
var closeShopText = new Text2('CLOSE', {
	size: 30,
	fill: 0xFFFFFF
});
closeShopText.anchor.set(0.5, 0.5);
closeShopText.x = closeShopBtn.x;
closeShopText.y = closeShopBtn.y;
game.addChild(closeShopText);
// Functions
function updateMoneyDisplay() {
	moneyText.setText('Money: $' + playerMoney);
}
function updateLivesDisplay() {
	livesText.setText('Lives: ' + playerLives);
}
function updateWaveDisplay() {
	waveText.setText('Wave: ' + currentWave);
}
function toggleShop() {
	shopOpen = !shopOpen;
	shopPanel.visible = shopOpen;
	shopTitle.visible = shopOpen;
	basicTowerBtn.visible = shopOpen;
	basicTowerText.visible = shopOpen;
	slowTowerBtn.visible = shopOpen;
	slowTowerText.visible = shopOpen;
	areaTowerBtn.visible = shopOpen;
	areaTowerText.visible = shopOpen;
	poisonTowerBtn.visible = shopOpen;
	poisonTowerText.visible = shopOpen;
	closeShopBtn.visible = shopOpen;
	closeShopText.visible = shopOpen;
}
function startWave() {
	if (waveInProgress) return;
	waveInProgress = true;
	var enemiesToSpawn = 3 + currentWave;
	var spawnDelay = 0;
	for (var i = 0; i < enemiesToSpawn; i++) {
		LK.setTimeout(function () {
			var enemy;
			var enemyType = Math.random();
			if (currentWave >= 3 && enemyType < 0.3) {
				enemy = new FastEnemy();
			} else if (currentWave >= 5 && enemyType < 0.6) {
				enemy = new TankEnemy();
			} else {
				enemy = new Enemy();
			}
			enemy.x = enemyPath[0].x;
			enemy.y = enemyPath[0].y;
			enemy.health += Math.floor(currentWave / 3); // Increase health every 3 waves
			enemy.maxHealth = enemy.health;
			enemies.push(enemy);
			game.addChild(enemy);
		}, spawnDelay);
		spawnDelay += 1000; // 1 second between spawns
	}
}
function checkWaveComplete() {
	if (waveInProgress && enemies.length === 0) {
		waveInProgress = false;
		currentWave++;
		updateWaveDisplay();
		playerMoney += 50; // Wave completion bonus
		updateMoneyDisplay();
	}
}
function placeTower(x, y) {
	var towerCost = 50;
	if (selectedTowerType === 'slow') towerCost = 75;else if (selectedTowerType === 'area') towerCost = 100;else if (selectedTowerType === 'poison') towerCost = 80;
	if (!placingTower || playerMoney < towerCost) return false;
	// Check if position is valid (not too close to path or other towers)
	for (var i = 0; i < towers.length; i++) {
		var tower = towers[i];
		var dx = tower.x - x;
		var dy = tower.y - y;
		if (Math.sqrt(dx * dx + dy * dy) < 100) {
			return false; // Too close to another tower
		}
	}
	var tower;
	if (selectedTowerType === 'slow') {
		tower = new SlowTower();
	} else if (selectedTowerType === 'area') {
		tower = new AreaTower();
	} else if (selectedTowerType === 'poison') {
		tower = new PoisonTower();
	} else {
		tower = new Tower();
	}
	tower.x = x;
	tower.y = y;
	towers.push(tower);
	game.addChild(tower);
	playerMoney -= tower.cost;
	updateMoneyDisplay();
	// Only stop placing if player doesn't have enough money for another tower
	if (playerMoney < towerCost) {
		placingTower = false;
	}
	return true;
}
// Event handlers
shopBtn.down = function (x, y, obj) {
	toggleShop();
};
readyBtn.down = function (x, y, obj) {
	if (!waveInProgress) {
		startWave();
	}
};
basicTowerBtn.down = function (x, y, obj) {
	if (playerMoney >= 50) {
		placingTower = true;
		selectedTowerType = 'basic';
		toggleShop();
	}
};
slowTowerBtn.down = function (x, y, obj) {
	if (playerMoney >= 75) {
		placingTower = true;
		selectedTowerType = 'slow';
		toggleShop();
	}
};
areaTowerBtn.down = function (x, y, obj) {
	if (playerMoney >= 100) {
		placingTower = true;
		selectedTowerType = 'area';
		toggleShop();
	}
};
poisonTowerBtn.down = function (x, y, obj) {
	if (playerMoney >= 80) {
		placingTower = true;
		selectedTowerType = 'poison';
		toggleShop();
	}
};
closeShopBtn.down = function (x, y, obj) {
	toggleShop();
};
game.down = function (x, y, obj) {
	if (placingTower) {
		placeTower(x, y);
	}
};
game.up = function (x, y, obj) {
	// Double tap to cancel tower placement
	if (placingTower && obj.doubleTap) {
		placingTower = false;
		selectedTowerType = null;
	}
};
// Main game loop
game.update = function () {
	// Update towers
	for (var i = 0; i < towers.length; i++) {
		towers[i].update();
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		enemy.update();
		// Remove dead enemies
		if (enemy.health <= 0) {
			enemy.destroy();
			enemies.splice(i, 1);
		}
		// Remove enemies that reached the end
		else if (enemy.pathIndex >= enemyPath.length) {
			enemy.destroy();
			enemies.splice(i, 1);
		}
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		var shouldRemove = bullet.update();
		if (shouldRemove || !bullet.target || bullet.target.health <= 0) {
			bullet.destroy();
			bullets.splice(i, 1);
		}
	}
	// Check for game over
	if (playerLives <= 0) {
		LK.showGameOver();
	}
	// Update lives display if changed
	updateLivesDisplay();
	// Check if wave is complete
	checkWaveComplete();
	// Win condition - survive 10 waves
	if (currentWave > 10 && !waveInProgress && enemies.length === 0) {
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -5,8 +5,85 @@
 
 /**** 
 * Classes
 ****/ 
+var AreaTower = Container.expand(function () {
+	var self = Container.call(this);
+	var towerGraphics = self.attachAsset('areaTower', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.range = 160;
+	self.damage = 2;
+	self.areaDamage = 100; // Area damage radius
+	self.fireRate = 90; // Slower fire rate due to area effect
+	self.lastShot = 0;
+	self.cost = 100;
+	self.canShoot = function () {
+		return LK.ticks - self.lastShot >= self.fireRate;
+	};
+	self.findTarget = function () {
+		var closestEnemy = null;
+		var closestDistance = Infinity;
+		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 && distance < closestDistance) {
+				closestDistance = distance;
+				closestEnemy = enemy;
+			}
+		}
+		return closestEnemy;
+	};
+	self.explode = function (targetX, targetY) {
+		// Create explosion visual effect
+		var explosion = game.addChild(LK.getAsset('explosion', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			x: targetX,
+			y: targetY
+		}));
+		// Animate explosion
+		tween(explosion, {
+			scaleX: 2,
+			scaleY: 2,
+			alpha: 0
+		}, {
+			duration: 300,
+			onFinish: function onFinish() {
+				explosion.destroy();
+			}
+		});
+		// Damage all enemies in area
+		for (var i = 0; i < enemies.length; i++) {
+			var enemy = enemies[i];
+			var dx = enemy.x - targetX;
+			var dy = enemy.y - targetY;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance <= self.areaDamage) {
+				if (enemy.takeDamage(self.damage)) {
+					playerMoney += enemy.reward;
+					updateMoneyDisplay();
+				}
+			}
+		}
+	};
+	self.shoot = function (target) {
+		if (!self.canShoot()) return;
+		self.explode(target.x, target.y);
+		self.lastShot = LK.ticks;
+		LK.getSound('shoot').play();
+	};
+	self.update = function () {
+		var target = self.findTarget();
+		if (target) {
+			self.shoot(target);
+		}
+	};
+	return self;
+});
 var Bullet = Container.expand(function () {
 	var self = Container.call(this);
 	var bulletGraphics = self.attachAsset('bullet', {
 		anchorX: 0.5,
@@ -76,8 +153,26 @@
 			}, {
 				duration: 200
 			});
 		}
+		// Handle poison effect
+		if (self.isPoisoned) {
+			if (LK.ticks >= self.poisonEndTick) {
+				self.isPoisoned = false;
+				// Remove green tint
+				tween(self.children[0], {
+					tint: 0xFFFFFF
+				}, {
+					duration: 200
+				});
+			} else if (LK.ticks >= self.lastPoisonTick + self.poisonTickInterval) {
+				if (self.takeDamage(self.poisonDamage)) {
+					playerMoney += self.reward;
+					updateMoneyDisplay();
+				}
+				self.lastPoisonTick = LK.ticks;
+			}
+		}
 		if (self.pathIndex >= enemyPath.length) return;
 		var targetPoint = enemyPath[self.pathIndex];
 		var dx = targetPoint.x - self.x;
 		var dy = targetPoint.y - self.y;
@@ -95,8 +190,77 @@
 		}
 	};
 	return self;
 });
+var FastEnemy = Container.expand(function () {
+	var self = Container.call(this);
+	// Override graphics with different color
+	self.children[0].destroy();
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	enemyGraphics.tint = 0xff9800; // Orange color
+	self.health = 2;
+	self.maxHealth = 2;
+	self.speed = 4; // Faster than normal enemy
+	self.reward = 15; // Higher reward
+	return self;
+});
+var PoisonTower = Container.expand(function () {
+	var self = Container.call(this);
+	var towerGraphics = self.attachAsset('poisonTower', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.range = 150;
+	self.poisonDamage = 1;
+	self.poisonDuration = 180; // 3 seconds of poison
+	self.fireRate = 120; // Slower fire rate
+	self.lastShot = 0;
+	self.cost = 80;
+	self.canShoot = function () {
+		return LK.ticks - self.lastShot >= self.fireRate;
+	};
+	self.findTargetsInRange = function () {
+		var targetsInRange = [];
+		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) {
+				targetsInRange.push(enemy);
+			}
+		}
+		return targetsInRange;
+	};
+	self.applyPoison = function () {
+		if (!self.canShoot()) return;
+		var targets = self.findTargetsInRange();
+		for (var i = 0; i < targets.length; i++) {
+			var enemy = targets[i];
+			if (!enemy.isPoisoned) {
+				enemy.isPoisoned = true;
+				enemy.poisonDamage = self.poisonDamage;
+				enemy.poisonEndTick = LK.ticks + self.poisonDuration;
+				enemy.poisonTickInterval = 30; // Damage every 0.5 seconds
+				enemy.lastPoisonTick = LK.ticks;
+				// Visual effect - tint enemy green
+				tween(enemy.children[0], {
+					tint: 0x4caf50
+				}, {
+					duration: 200
+				});
+			}
+		}
+		self.lastShot = LK.ticks;
+	};
+	self.update = function () {
+		self.applyPoison();
+	};
+	return self;
+});
 var SlowTower = Container.expand(function () {
 	var self = Container.call(this);
 	var towerGraphics = self.attachAsset('slowTower', {
 		anchorX: 0.5,
@@ -148,8 +312,25 @@
 		self.applySlowEffect();
 	};
 	return self;
 });
+var TankEnemy = Container.expand(function () {
+	var self = Container.call(this);
+	// Override graphics with different color and size
+	self.children[0].destroy();
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		scaleX: 1.5,
+		scaleY: 1.5
+	});
+	enemyGraphics.tint = 0x9c27b0; // Purple color
+	self.health = 8;
+	self.maxHealth = 8;
+	self.speed = 1; // Slower than normal enemy
+	self.reward = 25; // Higher reward
+	return self;
+});
 var Tower = Container.expand(function () {
 	var self = Container.call(this);
 	var towerGraphics = self.attachAsset('tower', {
 		anchorX: 0.5,
@@ -409,8 +590,42 @@
 slowTowerText.anchor.set(0.5, 0.5);
 slowTowerText.x = slowTowerBtn.x;
 slowTowerText.y = slowTowerBtn.y;
 game.addChild(slowTowerText);
+// Area tower button in shop
+var areaTowerBtn = game.addChild(LK.getAsset('towerButton', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: shopPanel.x,
+	y: shopPanel.y - 50,
+	color: 0xff9800
+}));
+areaTowerBtn.visible = false;
+var areaTowerText = new Text2('Area Tower\n$100', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+areaTowerText.anchor.set(0.5, 0.5);
+areaTowerText.x = areaTowerBtn.x;
+areaTowerText.y = areaTowerBtn.y;
+game.addChild(areaTowerText);
+// Poison tower button in shop
+var poisonTowerBtn = game.addChild(LK.getAsset('towerButton', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: shopPanel.x,
+	y: shopPanel.y + 100,
+	color: 0x4caf50
+}));
+poisonTowerBtn.visible = false;
+var poisonTowerText = new Text2('Poison Tower\n$80', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+poisonTowerText.anchor.set(0.5, 0.5);
+poisonTowerText.x = poisonTowerBtn.x;
+poisonTowerText.y = poisonTowerBtn.y;
+game.addChild(poisonTowerText);
 // Close shop button
 var closeShopBtn = game.addChild(LK.getAsset('towerButton', {
 	anchorX: 0.5,
 	anchorY: 0.5,
@@ -444,8 +659,12 @@
 	basicTowerBtn.visible = shopOpen;
 	basicTowerText.visible = shopOpen;
 	slowTowerBtn.visible = shopOpen;
 	slowTowerText.visible = shopOpen;
+	areaTowerBtn.visible = shopOpen;
+	areaTowerText.visible = shopOpen;
+	poisonTowerBtn.visible = shopOpen;
+	poisonTowerText.visible = shopOpen;
 	closeShopBtn.visible = shopOpen;
 	closeShopText.visible = shopOpen;
 }
 function startWave() {
@@ -454,9 +673,17 @@
 	var enemiesToSpawn = 3 + currentWave;
 	var spawnDelay = 0;
 	for (var i = 0; i < enemiesToSpawn; i++) {
 		LK.setTimeout(function () {
-			var enemy = new Enemy();
+			var enemy;
+			var enemyType = Math.random();
+			if (currentWave >= 3 && enemyType < 0.3) {
+				enemy = new FastEnemy();
+			} else if (currentWave >= 5 && enemyType < 0.6) {
+				enemy = new TankEnemy();
+			} else {
+				enemy = new Enemy();
+			}
 			enemy.x = enemyPath[0].x;
 			enemy.y = enemyPath[0].y;
 			enemy.health += Math.floor(currentWave / 3); // Increase health every 3 waves
 			enemy.maxHealth = enemy.health;
@@ -475,9 +702,10 @@
 		updateMoneyDisplay();
 	}
 }
 function placeTower(x, y) {
-	var towerCost = selectedTowerType === 'slow' ? 75 : 50;
+	var towerCost = 50;
+	if (selectedTowerType === 'slow') towerCost = 75;else if (selectedTowerType === 'area') towerCost = 100;else if (selectedTowerType === 'poison') towerCost = 80;
 	if (!placingTower || playerMoney < towerCost) return false;
 	// Check if position is valid (not too close to path or other towers)
 	for (var i = 0; i < towers.length; i++) {
 		var tower = towers[i];
@@ -486,9 +714,18 @@
 		if (Math.sqrt(dx * dx + dy * dy) < 100) {
 			return false; // Too close to another tower
 		}
 	}
-	var tower = selectedTowerType === 'slow' ? new SlowTower() : new Tower();
+	var tower;
+	if (selectedTowerType === 'slow') {
+		tower = new SlowTower();
+	} else if (selectedTowerType === 'area') {
+		tower = new AreaTower();
+	} else if (selectedTowerType === 'poison') {
+		tower = new PoisonTower();
+	} else {
+		tower = new Tower();
+	}
 	tower.x = x;
 	tower.y = y;
 	towers.push(tower);
 	game.addChild(tower);
@@ -522,8 +759,22 @@
 		selectedTowerType = 'slow';
 		toggleShop();
 	}
 };
+areaTowerBtn.down = function (x, y, obj) {
+	if (playerMoney >= 100) {
+		placingTower = true;
+		selectedTowerType = 'area';
+		toggleShop();
+	}
+};
+poisonTowerBtn.down = function (x, y, obj) {
+	if (playerMoney >= 80) {
+		placingTower = true;
+		selectedTowerType = 'poison';
+		toggleShop();
+	}
+};
 closeShopBtn.down = function (x, y, obj) {
 	toggleShop();
 };
 game.down = function (x, y, obj) {