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

/**** 
* Classes
****/ 
var Arrow = Container.expand(function (team, startX, startY, targetX, targetY, damage) {
	var self = Container.call(this);
	var graphics = self.attachAsset('Arrow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.team = team;
	self.damage = damage;
	self.speed = 8;
	self.target = null;
	// Calculate direction
	var dx = targetX - startX;
	var dy = targetY - startY;
	var distance = Math.sqrt(dx * dx + dy * dy);
	self.directionX = dx / distance;
	self.directionY = dy / distance;
	// Set rotation to point toward target
	self.rotation = Math.atan2(dy, dx);
	// Position arrow at start
	self.x = startX;
	self.y = startY;
	self.update = function () {
		// Move arrow
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Check if arrow is off screen
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.destroy();
			// Remove from arrows array
			for (var i = arrows.length - 1; i >= 0; i--) {
				if (arrows[i] === self) {
					arrows.splice(i, 1);
					break;
				}
			}
		}
		// Check collision with enemy units
		var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
		for (var i = 0; i < enemyUnits.length; i++) {
			var enemy = enemyUnits[i];
			if (self.intersects(enemy)) {
				enemy.health -= self.damage;
				if (enemy.health <= 0) {
					enemyUnits.splice(i, 1);
					enemy.destroy();
				}
				self.destroy();
				// Remove from arrows array
				for (var j = arrows.length - 1; j >= 0; j--) {
					if (arrows[j] === self) {
						arrows.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Check collision with enemy towers
		var enemyTowers = self.team === 'player' ? aiTowers : playerTowers;
		for (var i = 0; i < enemyTowers.length; i++) {
			var tower = enemyTowers[i];
			if (self.intersects(tower)) {
				tower.health -= self.damage;
				if (tower.health <= 0) {
					enemyTowers.splice(i, 1);
					tower.destroy();
					LK.getSound('towerDestroyed').play();
				}
				self.destroy();
				// Remove from arrows array
				for (var j = arrows.length - 1; j >= 0; j--) {
					if (arrows[j] === self) {
						arrows.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
	};
	return self;
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.value = 1;
	self.collected = false;
	return self;
});
var CombatUnit = Container.expand(function (team, unitType) {
	var self = Container.call(this);
	var assetName = team === 'player' ? unitType : 'ai' + unitType.charAt(0).toUpperCase() + unitType.slice(1);
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.team = team;
	self.unitType = unitType;
	self.speed = unitType === 'dragon' ? 3 : unitType === 'wizard' ? 1.5 : unitType === 'archer' ? 2.5 : 2;
	self.damage = unitType === 'dragon' ? 40 : unitType === 'wizard' ? 30 : unitType === 'archer' ? 20 : 10;
	self.health = unitType === 'dragon' ? 50 : unitType === 'wizard' ? 40 : unitType === 'archer' ? 30 : unitType === 'warrior' ? 20 : 10;
	self.maxHealth = self.health;
	self.attackRange = unitType === 'wizard' ? 100 : unitType === 'archer' ? 200 : 50;
	self.attackCooldown = 0;
	self.target = null;
	self.isWaiting = !zombieMode && team === 'player'; // Only player units wait in normal mode
	// Create health bar background (black)
	self.healthBarBg = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBarBg.x = 0;
	self.healthBarBg.y = -120;
	self.healthBarBg.tint = team === 'player' ? 0x0000ff : 0x000000;
	self.addChild(self.healthBarBg);
	// Create health bar (green for player, red for AI)
	self.healthBar = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBar.x = 0;
	self.healthBar.y = -120;
	self.healthBar.tint = team === 'player' ? 0x00ff00 : 0xff0000;
	self.addChild(self.healthBar);
	self.healthText = new Text2(self.health.toString(), {
		size: 50,
		fill: '#ffffff'
	});
	self.healthText.anchor.set(0.5, 0.5);
	self.addChild(self.healthText);
	self.healthText.x = 0;
	self.healthText.y = -120;
	self.update = function () {
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		// In zombie mode, player units prioritize attacking zombies
		if (zombieMode && self.team === 'player' && self.unitType !== 'worker') {
			self.attackZombies();
		} else if (!zombieMode && self.team === 'player' && self.isWaiting) {
			// In normal mode, player units wait unless attack is triggered
			// Stay in position and don't move
		} else {
			if (!self.target) {
				self.findNearestEnemyTower();
			} else {
				self.moveToTarget();
			}
			// Combat with nearby enemy units
			self.combatNearbyEnemies();
		}
		self.healthText.setText(self.health.toString());
		// Update health bar scale based on health percentage
		var healthPercentage = self.health / self.maxHealth;
		tween(self.healthBar, {
			scaleX: 1.5 * healthPercentage
		}, {
			duration: 200
		});
	};
	self.findNearestEnemyTower = function () {
		// In zombie mode, player units should prioritize attacking zombies
		if (zombieMode && self.team === 'player' && self.unitType !== 'worker') {
			var nearestZombie = null;
			var nearestDistance = Infinity;
			for (var i = 0; i < zombies.length; i++) {
				var zombie = zombies[i];
				var distance = Math.sqrt(Math.pow(zombie.x - self.x, 2) + Math.pow(zombie.y - self.y, 2));
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestZombie = zombie;
				}
			}
			// If we found a zombie, target it
			if (nearestZombie) {
				self.target = nearestZombie;
				return;
			}
		}
		// Find nearest target - prioritize ALL enemy units first (including workers), then towers
		var nearestTarget = null;
		var nearestDistance = Infinity;
		// First check all enemy units (including workers)
		var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
		for (var i = 0; i < enemyUnits.length; i++) {
			var enemy = enemyUnits[i];
			// Target all enemy units now, including workers
			if (self.unitType !== 'worker') {
				var distance = Math.sqrt(Math.pow(enemy.x - self.x, 2) + Math.pow(enemy.y - self.y, 2));
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestTarget = enemy;
				}
			}
		}
		// Only target towers if no enemy units remain
		if (!nearestTarget) {
			var enemyTowers = self.team === 'player' ? aiTowers : playerTowers;
			for (var i = 0; i < enemyTowers.length; i++) {
				var tower = enemyTowers[i];
				var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestTarget = tower;
				}
			}
		}
		self.target = nearestTarget;
	};
	self.moveToTarget = function () {
		if (!self.target) {
			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 < self.attackRange) {
			self.attackTarget();
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.attackTarget = function () {
		if (self.attackCooldown <= 0 && self.target) {
			if (self.unitType === 'archer') {
				// Archer shoots arrow
				var arrow = new Arrow(self.team, self.x, self.y, self.target.x, self.target.y, self.damage);
				arrows.push(arrow);
				game.addChild(arrow);
			} else if (self.unitType === 'wizard') {
				// Wizard shoots magic
				var magic = new Magic(self.team, self.x, self.y, self.target.x, self.target.y, self.damage);
				magics.push(magic);
				game.addChild(magic);
			} else if (self.unitType === 'dragon') {
				// Change to attack asset for all dragon attacks
				self.removeChild(graphics);
				var assetName = 'DragonAttack';
				graphics = self.attachAsset(assetName, {
					anchorX: 0.5,
					anchorY: 0.5
				});
				// Dragon shoots fire with 1 damage
				var fire = new Fire(self.team, self.x, self.y, self.target.x, self.target.y, 1);
				fires.push(fire);
				game.addChild(fire);
			} else {
				// Melee attack
				self.target.health -= self.damage;
				if (self.target.health <= 0) {
					// Check if target is a unit or tower
					if (self.target.unitType) {
						// Target is a unit
						self.destroyUnit();
					} else {
						// Target is a tower
						self.destroyTower();
					}
				}
			}
			// Set dragon attack cooldown to 3 frames (0.05 seconds)
			if (self.unitType === 'dragon') {
				self.attackCooldown = 3;
			} else {
				self.attackCooldown = 60;
			}
			LK.getSound('attack').play();
		}
	};
	self.destroyUnit = function () {
		var units = self.team === 'player' ? aiUnits : playerUnits;
		var index = units.indexOf(self.target);
		if (index > -1) {
			units.splice(index, 1);
			self.target.destroy();
			self.target = null;
		}
	};
	self.destroyTower = function () {
		var towers = self.team === 'player' ? aiTowers : playerTowers;
		var index = towers.indexOf(self.target);
		if (index > -1) {
			towers.splice(index, 1);
			self.target.destroy();
			LK.getSound('towerDestroyed').play();
			self.target = null;
		}
	};
	self.attackZombies = function () {
		// Find nearest zombie to target
		var nearestZombie = null;
		var nearestDistance = Infinity;
		for (var i = 0; i < zombies.length; i++) {
			var zombie = zombies[i];
			var dx = zombie.x - self.x;
			var dy = zombie.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < nearestDistance) {
				nearestDistance = distance;
				nearestZombie = zombie;
			}
		}
		// Move toward and attack nearest zombie
		if (nearestZombie) {
			var dx = nearestZombie.x - self.x;
			var dy = nearestZombie.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			// Move toward zombie if not in attack range
			if (distance > self.attackRange) {
				self.x += dx / distance * self.speed;
				self.y += dy / distance * self.speed;
			} else if (self.attackCooldown <= 0) {
				// Attack zombie based on unit type
				if (self.unitType === 'archer') {
					// Archer shoots arrow at zombie
					var arrow = new Arrow(self.team, self.x, self.y, nearestZombie.x, nearestZombie.y, self.damage);
					arrows.push(arrow);
					game.addChild(arrow);
				} else if (self.unitType === 'wizard') {
					// Wizard shoots magic at zombie
					var magic = new Magic(self.team, self.x, self.y, nearestZombie.x, nearestZombie.y, self.damage);
					magics.push(magic);
					game.addChild(magic);
				} else if (self.unitType === 'dragon') {
					// Change to attack asset for dragon zombie attacks
					self.removeChild(graphics);
					var assetName = 'DragonAttack';
					graphics = self.attachAsset(assetName, {
						anchorX: 0.5,
						anchorY: 0.5
					});
					// Dragon shoots fire at zombie
					var fire = new Fire(self.team, self.x, self.y, nearestZombie.x, nearestZombie.y, self.damage);
					fires.push(fire);
					game.addChild(fire);
				} else {
					// Melee attack (warrior)
					nearestZombie.health -= self.damage;
					if (nearestZombie.health <= 0) {
						for (var j = 0; j < zombies.length; j++) {
							if (zombies[j] === nearestZombie) {
								zombies.splice(j, 1);
								nearestZombie.destroy();
								break;
							}
						}
					}
				}
				self.attackCooldown = 60; // 1 second cooldown
				LK.getSound('attack').play();
			}
		}
	};
	self.combatNearbyEnemies = function () {
		if (self.attackCooldown <= 0) {
			var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
			var meleeRange = 60; // Close combat range
			for (var i = 0; i < enemyUnits.length; i++) {
				var enemy = enemyUnits[i];
				// Skip workers in combat
				if (enemy.unitType === 'worker') {
					continue;
				}
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				// If enemy unit is within melee range, attack it
				if (distance <= meleeRange) {
					enemy.health -= self.damage;
					self.attackCooldown = 60; // 1 second cooldown
					LK.getSound('attack').play();
					// Check if enemy is destroyed
					if (enemy.health <= 0) {
						enemyUnits.splice(i, 1);
						enemy.destroy();
					}
					break; // Only attack one enemy per cycle
				}
			}
		}
	};
	return self;
});
var Fire = Container.expand(function (team, startX, startY, targetX, targetY, damage) {
	var self = Container.call(this);
	var graphics = self.attachAsset('Magic', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.team = team;
	self.damage = damage;
	self.speed = 4;
	self.target = null;
	// Calculate direction
	var dx = targetX - startX;
	var dy = targetY - startY;
	var distance = Math.sqrt(dx * dx + dy * dy);
	self.directionX = dx / distance;
	self.directionY = dy / distance;
	// Position fire at start
	self.x = startX;
	self.y = startY;
	// Add fire effect - orange/red tint and scaling
	graphics.tint = 0xff4500; // Orange-red fire color
	tween(graphics, {
		scaleX: 1.5,
		scaleY: 1.5
	}, {
		duration: 200,
		easing: tween.easeOut
	});
	self.update = function () {
		// Move fire
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Add fire flicker rotation
		graphics.rotation += 0.15;
		// Check if fire is off screen
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.destroy();
			// Remove from fires array
			for (var i = fires.length - 1; i >= 0; i--) {
				if (fires[i] === self) {
					fires.splice(i, 1);
					break;
				}
			}
		}
		// Check collision with enemy units
		var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
		for (var i = 0; i < enemyUnits.length; i++) {
			var enemy = enemyUnits[i];
			if (self.intersects(enemy)) {
				enemy.health -= self.damage;
				if (enemy.health <= 0) {
					enemyUnits.splice(i, 1);
					enemy.destroy();
				}
				self.destroy();
				// Remove from fires array
				for (var j = fires.length - 1; j >= 0; j--) {
					if (fires[j] === self) {
						fires.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Check collision with enemy towers
		var enemyTowers = self.team === 'player' ? aiTowers : playerTowers;
		for (var i = 0; i < enemyTowers.length; i++) {
			var tower = enemyTowers[i];
			if (self.intersects(tower)) {
				tower.health -= self.damage;
				if (tower.health <= 0) {
					enemyTowers.splice(i, 1);
					tower.destroy();
					LK.getSound('towerDestroyed').play();
				}
				self.destroy();
				// Remove from fires array
				for (var j = fires.length - 1; j >= 0; j--) {
					if (fires[j] === self) {
						fires.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
	};
	return self;
});
var Magic = Container.expand(function (team, startX, startY, targetX, targetY, damage) {
	var self = Container.call(this);
	var graphics = self.attachAsset('Magic', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.team = team;
	self.damage = damage;
	self.speed = 6;
	self.target = null;
	// Calculate direction
	var dx = targetX - startX;
	var dy = targetY - startY;
	var distance = Math.sqrt(dx * dx + dy * dy);
	self.directionX = dx / distance;
	self.directionY = dy / distance;
	// Position magic at start
	self.x = startX;
	self.y = startY;
	// Add magical glow effect
	tween(graphics, {
		tint: 0x9966ff
	}, {
		duration: 500,
		easing: tween.easeInOut
	});
	tween(graphics, {
		scaleX: 1.2,
		scaleY: 1.2
	}, {
		duration: 300,
		easing: tween.easeOut
	});
	self.update = function () {
		// Move magic
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Add sparkle rotation
		graphics.rotation += 0.1;
		// Check if magic is off screen
		if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.destroy();
			// Remove from magics array
			for (var i = magics.length - 1; i >= 0; i--) {
				if (magics[i] === self) {
					magics.splice(i, 1);
					break;
				}
			}
		}
		// Check collision with enemy units
		var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
		for (var i = 0; i < enemyUnits.length; i++) {
			var enemy = enemyUnits[i];
			if (self.intersects(enemy)) {
				enemy.health -= self.damage;
				if (enemy.health <= 0) {
					enemyUnits.splice(i, 1);
					enemy.destroy();
				}
				self.destroy();
				// Remove from magics array
				for (var j = magics.length - 1; j >= 0; j--) {
					if (magics[j] === self) {
						magics.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
		// Check collision with enemy towers
		var enemyTowers = self.team === 'player' ? aiTowers : playerTowers;
		for (var i = 0; i < enemyTowers.length; i++) {
			var tower = enemyTowers[i];
			if (self.intersects(tower)) {
				tower.health -= self.damage;
				if (tower.health <= 0) {
					enemyTowers.splice(i, 1);
					tower.destroy();
					LK.getSound('towerDestroyed').play();
				}
				self.destroy();
				// Remove from magics array
				for (var j = magics.length - 1; j >= 0; j--) {
					if (magics[j] === self) {
						magics.splice(j, 1);
						break;
					}
				}
				return;
			}
		}
	};
	return self;
});
var Tower = Container.expand(function (team) {
	var self = Container.call(this);
	var assetName = team === 'player' ? 'playerTower' : 'aiTower';
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.team = team;
	self.health = 500;
	self.maxHealth = 500;
	// Create health bar background (black)
	self.healthBarBg = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2.08,
		scaleY: 0.625
	});
	self.healthBarBg.x = 0;
	self.healthBarBg.y = -262.5;
	self.healthBarBg.tint = 0x0000ff;
	self.addChild(self.healthBarBg);
	// Create health bar (green for player, red for AI)
	self.healthBar = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2.08,
		scaleY: 0.625
	});
	self.healthBar.x = 0;
	self.healthBar.y = -262.5;
	self.healthBar.tint = team === 'player' ? 0x00ff00 : 0xff0000;
	self.addChild(self.healthBar);
	self.healthText = new Text2(self.health.toString(), {
		size: 42,
		fill: '#ffffff'
	});
	self.healthText.anchor.set(0.5, 0.5);
	self.addChild(self.healthText);
	self.healthText.x = 0;
	self.healthText.y = -262.5;
	self.attackCooldown = 0;
	self.attackRange = 400;
	// Damage area outline removed as requested
	self.update = function () {
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		self.attackNearbyEnemies();
		self.healthText.setText(self.health.toString());
		// Update health bar scale based on health percentage
		var healthPercentage = self.health / self.maxHealth;
		tween(self.healthBar, {
			scaleX: 2.08 * healthPercentage
		}, {
			duration: 200
		});
	};
	self.attackNearbyEnemies = function () {
		if (self.attackCooldown <= 0) {
			var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
			var nearestEnemy = null;
			var nearestDistance = Infinity;
			// Find nearest enemy unit within attack range
			for (var i = 0; i < enemyUnits.length; i++) {
				var enemy = enemyUnits[i];
				var dx = enemy.x - self.x;
				var dy = enemy.y - (self.y - 131.25); // Adjust for tower center position
				var distance = Math.sqrt(dx * dx + dy * dy);
				// Only consider units within the attack range
				if (distance <= self.attackRange && distance < nearestDistance) {
					nearestDistance = distance;
					nearestEnemy = enemy;
				}
			}
			// Attack only the nearest enemy if found
			if (nearestEnemy) {
				nearestEnemy.health -= 1; // Deal 1 damage as specified
				self.attackCooldown = 3; // 0.05 seconds at 60 FPS
				LK.getSound('attack').play();
				if (nearestEnemy.health <= 0) {
					var index = enemyUnits.indexOf(nearestEnemy);
					if (index > -1) {
						self.destroyUnit(nearestEnemy, enemyUnits, index);
					}
				}
			}
			// In zombie mode, player towers also attack zombies (find nearest zombie)
			if (zombieMode && self.team === 'player') {
				var nearestZombie = null;
				var nearestZombieDistance = Infinity;
				for (var i = 0; i < zombies.length; i++) {
					var zombie = zombies[i];
					var dx = zombie.x - self.x;
					var dy = zombie.y - (self.y - 131.25);
					var distance = Math.sqrt(dx * dx + dy * dy);
					if (distance <= self.attackRange && distance < nearestZombieDistance) {
						nearestZombieDistance = distance;
						nearestZombie = zombie;
					}
				}
				// Attack only the nearest zombie if found
				if (nearestZombie && !nearestEnemy) {
					// Only attack zombie if no enemy unit was attacked
					nearestZombie.health -= 1;
					self.attackCooldown = 3;
					LK.getSound('attack').play();
					if (nearestZombie.health <= 0) {
						var index = zombies.indexOf(nearestZombie);
						if (index > -1) {
							zombies.splice(index, 1);
							nearestZombie.destroy();
						}
					}
				}
			}
		}
	};
	self.showDamageArea = function () {
		// No visual effects when towers attack
	};
	self.destroyUnit = function (unit, unitsArray, index) {
		unitsArray.splice(index, 1);
		unit.destroy();
	};
	return self;
});
var Worker = Container.expand(function (team) {
	var self = Container.call(this);
	var assetName = team === 'player' ? 'worker' : 'aiWorker';
	var graphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.team = team;
	self.speed = 4;
	self.target = null;
	self.collectRange = 40;
	self.health = 10;
	self.maxHealth = 10;
	// Create health bar background (black)
	self.healthBarBg = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBarBg.x = 0;
	self.healthBarBg.y = -120;
	self.healthBarBg.tint = 0x000000;
	self.addChild(self.healthBarBg);
	// Create health bar (green for player, red for AI)
	self.healthBar = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBar.x = 0;
	self.healthBar.y = -120;
	self.healthBar.tint = team === 'player' ? 0x00ff00 : 0xff0000;
	self.addChild(self.healthBar);
	self.healthText = new Text2(self.health.toString(), {
		size: 50,
		fill: '#ffffff'
	});
	self.healthText.anchor.set(0.5, 0.5);
	self.addChild(self.healthText);
	self.healthText.x = 0;
	self.healthText.y = -120;
	self.update = function () {
		if (!self.target) {
			self.findNearestCoin();
		} else {
			self.moveToTarget();
		}
		// Workers can defend themselves
		self.defendSelf();
		self.healthText.setText(self.health.toString());
		// Update health bar scale based on health percentage
		var healthPercentage = self.health / self.maxHealth;
		tween(self.healthBar, {
			scaleX: 1.5 * healthPercentage
		}, {
			duration: 200
		});
	};
	self.findNearestCoin = function () {
		var targetCoins = self.team === 'player' ? playerCoins_array : aiCoins_array;
		var teamWorkers = self.team === 'player' ? playerUnits : aiUnits;
		var availableCoins = [];
		// First, collect all untargeted coins
		for (var i = 0; i < targetCoins.length; i++) {
			var coin = targetCoins[i];
			if (!coin.collected) {
				// Check if another worker is already targeting this coin
				var isTargeted = false;
				for (var j = 0; j < teamWorkers.length; j++) {
					var worker = teamWorkers[j];
					if (worker.unitType === 'worker' && worker !== self && worker.target === coin) {
						isTargeted = true;
						break;
					}
				}
				if (!isTargeted) {
					availableCoins.push(coin);
				}
			}
		}
		// If no available coins, clear target
		if (availableCoins.length === 0) {
			self.target = null;
			return;
		}
		// Get worker index to create unique targeting preference
		var workerIndex = -1;
		for (var i = 0; i < teamWorkers.length; i++) {
			if (teamWorkers[i] === self && teamWorkers[i].unitType === 'worker') {
				workerIndex = i;
				break;
			}
		}
		// Use worker index to create different targeting preferences
		var targetCoin = null;
		if (workerIndex >= 0 && workerIndex < availableCoins.length) {
			// Each worker gets a different coin based on their index
			targetCoin = availableCoins[workerIndex];
		} else {
			// If more workers than coins, use modulo to cycle through available coins
			var coinIndex = workerIndex % availableCoins.length;
			targetCoin = availableCoins[coinIndex];
		}
		// If targeted approach fails, fall back to nearest coin
		if (!targetCoin) {
			var nearestCoin = null;
			var nearestDistance = Infinity;
			for (var i = 0; i < availableCoins.length; i++) {
				var coin = availableCoins[i];
				var distance = Math.sqrt(Math.pow(coin.x - self.x, 2) + Math.pow(coin.y - self.y, 2));
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestCoin = coin;
				}
			}
			targetCoin = nearestCoin;
		}
		self.target = targetCoin;
	};
	self.moveToTarget = function () {
		if (!self.target || self.target.collected) {
			self.target = null;
			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 < self.collectRange) {
			self.collectCoin();
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.collectCoin = function () {
		if (self.target && !self.target.collected) {
			self.target.collected = true;
			if (self.team === 'player') {
				playerCoins += self.target.value;
			} else {
				aiCoins += self.target.value;
			}
			LK.getSound('coinCollect').play();
			self.target = null;
		}
	};
	self.defendSelf = function () {
		var enemyUnits = self.team === 'player' ? aiUnits : playerUnits;
		var defenseRange = 50;
		for (var i = 0; i < enemyUnits.length; i++) {
			var enemy = enemyUnits[i];
			// Workers only defend against other workers
			if (enemy.unitType === 'worker') {
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance <= defenseRange) {
					enemy.health -= 5; // Workers do less damage
					LK.getSound('attack').play();
					if (enemy.health <= 0) {
						enemyUnits.splice(i, 1);
						enemy.destroy();
					}
					break;
				}
			}
		}
	};
	return self;
});
var Zombie = Container.expand(function (waveNumber) {
	var self = Container.call(this);
	var graphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Stats increase with wave number
	var waveMultiplier = waveNumber || 1;
	self.speed = 1.5 + (waveMultiplier - 1) * 0.2; // Speed increases slightly each wave
	self.health = 30 + (waveMultiplier - 1) * 15; // Health increases by 15 each wave
	self.maxHealth = self.health;
	self.damage = 10 + (waveMultiplier - 1) * 5; // Damage increases by 5 each wave
	self.waveNumber = waveNumber;
	self.target = null;
	self.attackCooldown = 0;
	// Create health bar background (black)
	self.healthBarBg = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBarBg.x = 0;
	self.healthBarBg.y = -120;
	self.healthBarBg.tint = 0x000000;
	self.addChild(self.healthBarBg);
	// Create health bar (red for zombies)
	self.healthBar = LK.getAsset('blackBackground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.75
	});
	self.healthBar.x = 0;
	self.healthBar.y = -120;
	self.healthBar.tint = 0xff0000;
	self.addChild(self.healthBar);
	self.healthText = new Text2(self.health.toString(), {
		size: 50,
		fill: '#ffffff'
	});
	self.healthText.anchor.set(0.5, 0.5);
	self.addChild(self.healthText);
	self.healthText.x = 0;
	self.healthText.y = -120;
	self.update = function () {
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		if (!self.target) {
			self.findNearestPlayerTower();
		} else {
			self.moveToTarget();
		}
		// Attack nearby player units
		self.attackNearbyPlayerUnits();
		self.healthText.setText(self.health.toString());
		// Update health bar scale based on health percentage
		var healthPercentage = self.health / self.maxHealth;
		tween(self.healthBar, {
			scaleX: 1.5 * healthPercentage
		}, {
			duration: 200
		});
	};
	self.findNearestPlayerTower = function () {
		// Target player tower
		if (playerTowers.length > 0) {
			self.target = playerTowers[0];
		}
	};
	self.moveToTarget = function () {
		if (!self.target) {
			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 < 60) {
			self.attackTarget();
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.attackTarget = function () {
		if (self.attackCooldown <= 0 && self.target) {
			self.target.health -= self.damage;
			self.attackCooldown = 60;
			LK.getSound('attack').play();
			if (self.target.health <= 0) {
				// Tower destroyed
				var index = playerTowers.indexOf(self.target);
				if (index > -1) {
					playerTowers.splice(index, 1);
					self.target.destroy();
					LK.getSound('towerDestroyed').play();
					self.target = null;
				}
			}
		}
	};
	self.attackNearbyPlayerUnits = function () {
		if (self.attackCooldown <= 0) {
			var meleeRange = 60;
			for (var i = 0; i < playerUnits.length; i++) {
				var unit = playerUnits[i];
				var dx = unit.x - self.x;
				var dy = unit.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance <= meleeRange) {
					unit.health -= self.damage;
					self.attackCooldown = 60;
					LK.getSound('attack').play();
					if (unit.health <= 0) {
						playerUnits.splice(i, 1);
						unit.destroy();
					}
					break;
				}
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x228B22
});

/**** 
* Game Code
****/ 
// Game state management
var gameState = 'menu'; // 'menu' or 'playing'
// Add menu background
var menuBackground = LK.getAsset('menuBg', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
game.addChild(menuBackground);
// Create menu overlay
var menuOverlay = new Container();
game.addChild(menuOverlay);
// Add towers asset at the top of the menu
var towersAsset = LK.getAsset('Towers', {
	anchorX: 0.5,
	anchorY: 0,
	scaleX: 4.0,
	scaleY: 4.0
});
towersAsset.x = 1024;
towersAsset.y = 50;
menuOverlay.addChild(towersAsset);
// Add app banner at top of menu
var appBanner = LK.getAsset('Appbanner', {
	anchorX: 0.5,
	anchorY: 0,
	x: 1024,
	y: 20
});
menuOverlay.addChild(appBanner);
// Start button background
var startButtonBg = LK.getAsset('blackBackground', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4.0,
	scaleY: 1.5
});
startButtonBg.x = 1024;
startButtonBg.y = 1000;
startButtonBg.tint = 0x228b22;
menuOverlay.addChild(startButtonBg);
// Start button image
var startButton = LK.getAsset('StartGameButton', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4.0,
	scaleY: 2.0
});
startButton.x = 1024;
startButton.y = 1000;
menuOverlay.addChild(startButton);
// How to Play button
var howToPlayButton = LK.getAsset('Howtoplay22', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 4.0,
	scaleY: 4.0
});
howToPlayButton.x = 1024;
howToPlayButton.y = 1615; // 1.3x higher (2100 - 485 = 1615)
menuOverlay.addChild(howToPlayButton);
// Play menu music when game starts
LK.playMusic('Menusong');
// How to Play instructions overlay
var howToPlayOverlay = new Container();
howToPlayOverlay.visible = false;
game.addChild(howToPlayOverlay);
// How to Play background
var howToPlayBg = LK.getAsset('blackBackground', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 18.0,
	scaleY: 24.0
});
howToPlayBg.x = 1024;
howToPlayBg.y = 1366;
howToPlayBg.tint = 0x000000;
howToPlayBg.alpha = 0.9;
howToPlayOverlay.addChild(howToPlayBg);
// How to Play title
var howToPlayTitle = new Text2('HOW TO PLAY', {
	size: 100,
	fill: '#ffffff'
});
howToPlayTitle.anchor.set(0.5, 0.5);
howToPlayTitle.x = 1024;
howToPlayTitle.y = 400;
howToPlayOverlay.addChild(howToPlayTitle);
// How to Play instructions
var instructionsText = new Text2('NORMAL MODE:\n• Collect gold coins with workers\n• Spend gold to recruit units\n• Press Attack to command units to advance\n• Destroy enemy tower to win\n\nUNIT TYPES & STATS:\n• Worker: 5 gold, 10 HP, 5 damage, collects coins\n• Warrior: 10 gold, 20 HP, 10 damage, melee combat\n• Archer: 15 gold, 30 HP, 20 damage, ranged arrows\n• Wizard: 20 gold, 40 HP, 30 damage, magic attacks\n• Dragon: 25 gold, 50 HP, 40 damage, fire breath\n\nTOWERS:\n• Player Tower: 500 HP, 5 damage per second, attacks nearest enemy\n• AI Tower: 500 HP, 5 damage per second, attacks nearest enemy\n• Attack range: 400 pixels\n\nZOMBIE MODE:\n• Survive endless zombie waves\n• Units automatically attack zombies first\n• Zombies spawn 30 seconds after start\n• Wave 1: 5 zombies (30 HP, 10 damage)\n• Each wave: +2 zombies, +15 HP, +5 damage\n• Defend your tower at all costs!', {
	size: 42,
	fill: '#ffffff'
});
instructionsText.anchor.set(0.5, 0.5);
instructionsText.x = 1024;
instructionsText.y = 1300;
howToPlayOverlay.addChild(instructionsText);
// Back button
var backButton = new Text2('BACK TO MENU', {
	size: 80,
	fill: '#ffff00'
});
backButton.anchor.set(0.5, 0.5);
backButton.x = 1024;
backButton.y = 2100;
howToPlayOverlay.addChild(backButton);
// Mode selection overlay
var modeSelectionOverlay = new Container();
modeSelectionOverlay.visible = false;
game.addChild(modeSelectionOverlay);
// Mode selection background
var modeSelectionBg = LK.getAsset('blackBackground', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 18.0,
	scaleY: 24.0
});
modeSelectionBg.x = 1024;
modeSelectionBg.y = 1366;
modeSelectionBg.tint = 0x000000;
modeSelectionBg.alpha = 0.9;
modeSelectionOverlay.addChild(modeSelectionBg);
// Mode selection title
var modeSelectionTitle = new Text2('SELECT MODE', {
	size: 100,
	fill: '#ffffff'
});
modeSelectionTitle.anchor.set(0.5, 0.5);
modeSelectionTitle.x = 1024;
modeSelectionTitle.y = 600;
modeSelectionOverlay.addChild(modeSelectionTitle);
// Normal mode button
var normalModeButton = LK.getAsset('Normalmode', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 2.0,
	scaleY: 2.0
});
normalModeButton.x = 1024;
normalModeButton.y = 1000;
modeSelectionOverlay.addChild(normalModeButton);
// Zombie mode button in mode selection
var zombieModeSelectButton = LK.getAsset('Zombiemode', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 2.0,
	scaleY: 2.0
});
zombieModeSelectButton.x = 1024;
zombieModeSelectButton.y = 1400;
modeSelectionOverlay.addChild(zombieModeSelectButton);
// Back to menu button from mode selection
var backToMenuButton = new Text2('BACK TO MENU', {
	size: 80,
	fill: '#ffff00'
});
backToMenuButton.anchor.set(0.5, 0.5);
backToMenuButton.x = 1024;
backToMenuButton.y = 2000;
modeSelectionOverlay.addChild(backToMenuButton);
// Start button event handler - now shows mode selection
startButton.down = function () {
	menuOverlay.visible = false;
	modeSelectionOverlay.visible = true;
};
startButtonBg.down = function () {
	menuOverlay.visible = false;
	modeSelectionOverlay.visible = true;
};
// Normal mode button event handler
normalModeButton.down = function () {
	zombieMode = false;
	gameState = 'playing';
	modeSelectionOverlay.visible = false;
	LK.stopMusic(); // Stop menu music when starting game
	initializeGame();
};
// Zombie mode button event handler in mode selection
zombieModeSelectButton.down = function () {
	zombieMode = true;
	gameState = 'playing';
	modeSelectionOverlay.visible = false;
	LK.stopMusic();
	initializeGame();
};
// Back to menu button event handler
backToMenuButton.down = function () {
	modeSelectionOverlay.visible = false;
	menuOverlay.visible = true;
};
// How to Play button event handler
howToPlayButton.down = function () {
	menuOverlay.visible = false;
	howToPlayOverlay.visible = true;
};
// Back button event handler
backButton.down = function () {
	howToPlayOverlay.visible = false;
	menuOverlay.visible = true;
};
// Add game background (initially hidden)
var background = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
background.visible = false;
game.addChild(background);
var playerCoins = 0;
var aiCoins = 0;
var playerTowers = [];
var aiTowers = [];
var coins = [];
var playerCoins_array = [];
var aiCoins_array = [];
var playerUnits = [];
var aiUnits = [];
var arrows = [];
var magics = [];
var fires = [];
var coinSpawnTimer = 0;
var aiActionTimer = 0;
var zombies = [];
var zombieSpawnTimer = 0;
var zombieMode = false;
var zombieWaveNumber = 1;
var zombieWaveSpawnTimer = 0;
var zombieWaveInProgress = false;
var zombiesInCurrentWave = 0;
var zombiesToSpawnInWave = 0;
// UI Elements
var coinDisplay = new Text2('Golds: 0', {
	size: 80,
	fill: '#ffff00'
});
coinDisplay.anchor.set(0.5, 0.5);
coinDisplay.x = 200;
coinDisplay.y = -273.75;
coinDisplay.visible = false;
LK.gui.bottom.addChild(coinDisplay);
// Attack button
var attackButton = new Text2('Attack', {
	size: 80,
	fill: '#ff0000'
});
attackButton.anchor.set(0.5, 0.5);
attackButton.x = -200;
attackButton.y = -273.75;
attackButton.visible = false;
LK.gui.bottom.addChild(attackButton);
var workerButton = new Text2('5', {
	size: 32,
	fill: '#ffffff'
});
workerButton.anchor.set(0.5, 0.5);
workerButton.x = -400;
workerButton.y = -45;
var warriorButton = new Text2('10', {
	size: 32,
	fill: '#ffffff'
});
warriorButton.anchor.set(0.5, 0.5);
warriorButton.x = -200;
warriorButton.y = -45;
var wizardButton = new Text2('20', {
	size: 32,
	fill: '#ffffff'
});
wizardButton.anchor.set(0.5, 0.5);
wizardButton.x = 200;
wizardButton.y = -45;
var archerButton = new Text2('15', {
	size: 32,
	fill: '#ffffff'
});
archerButton.anchor.set(0.5, 0.5);
archerButton.x = 0;
archerButton.y = -45;
var dragonButton = new Text2('25', {
	size: 32,
	fill: '#ffffff'
});
dragonButton.anchor.set(0.5, 0.5);
dragonButton.x = 400;
dragonButton.y = -45;
// Add unified black background behind all recruitment buttons and unit images
var unifiedBackground = LK.getAsset('blackBackground', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 22.0,
	scaleY: 2.8
});
unifiedBackground.x = 0;
unifiedBackground.y = -78;
unifiedBackground.tint = 0x000000;
unifiedBackground.alpha = 0.5;
unifiedBackground.visible = false;
LK.gui.bottom.addChild(unifiedBackground);
// Add unit images above recruitment buttons
var workerImage = LK.getAsset('worker', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.0,
	scaleY: 1.0
});
workerImage.x = -400;
workerImage.y = -110;
LK.gui.bottom.addChild(workerImage);
var warriorImage = LK.getAsset('warrior', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.0,
	scaleY: 1.0
});
warriorImage.x = -200;
warriorImage.y = -110;
LK.gui.bottom.addChild(warriorImage);
var wizardImage = LK.getAsset('wizard', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.0,
	scaleY: 1.0
});
wizardImage.x = 200;
wizardImage.y = -110;
LK.gui.bottom.addChild(wizardImage);
var archerImage = LK.getAsset('archer', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.0,
	scaleY: 1.0
});
archerImage.x = 0;
archerImage.y = -110;
LK.gui.bottom.addChild(archerImage);
var dragonImage = LK.getAsset('dragon', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1.0,
	scaleY: 1.0
});
dragonImage.x = 400;
dragonImage.y = -110;
LK.gui.bottom.addChild(dragonImage);
// Wave display for zombie mode
var waveDisplay = new Text2('Wave: 1', {
	size: 80,
	fill: '#ff0000'
});
waveDisplay.anchor.set(0.5, 0.5);
waveDisplay.x = 0;
waveDisplay.y = 100;
waveDisplay.visible = false;
LK.gui.top.addChild(waveDisplay);
// Hide all UI elements initially (menu state)
workerButton.visible = false;
warriorButton.visible = false;
wizardButton.visible = false;
archerButton.visible = false;
dragonButton.visible = false;
workerImage.visible = false;
warriorImage.visible = false;
wizardImage.visible = false;
archerImage.visible = false;
dragonImage.visible = false;
// Add texts after backgrounds so they appear on top
LK.gui.bottom.addChild(workerButton);
LK.gui.bottom.addChild(warriorButton);
LK.gui.bottom.addChild(wizardButton);
LK.gui.bottom.addChild(archerButton);
LK.gui.bottom.addChild(dragonButton);
// Initialize towers
function initializeTowers() {
	// Player tower
	var playerTower = new Tower('player');
	playerTower.x = 1024;
	playerTower.y = 2300;
	playerTowers.push(playerTower);
	game.addChild(playerTower);
	// AI tower (only in normal mode)
	if (!zombieMode) {
		var aiTower = new Tower('ai');
		aiTower.x = 1024;
		aiTower.y = 400;
		aiTowers.push(aiTower);
		game.addChild(aiTower);
	}
}
;
function spawnCoin() {
	// Spawn player coin
	var playerCoin = new Coin();
	playerCoin.x = Math.random() * 1800 + 124;
	playerCoin.y = Math.random() * 1000 + 1200; // Lower half for player
	playerCoins_array.push(playerCoin);
	coins.push(playerCoin);
	game.addChild(playerCoin);
	// Spawn AI coin
	var aiCoin = new Coin();
	aiCoin.x = Math.random() * 1800 + 124;
	aiCoin.y = Math.random() * 1000 + 400; // Upper half for AI
	aiCoins_array.push(aiCoin);
	coins.push(aiCoin);
	game.addChild(aiCoin);
}
function spawnUnit(team, unitType) {
	var unit;
	var cost = unitType === 'worker' ? 5 : unitType === 'warrior' ? 10 : unitType === 'wizard' ? 20 : unitType === 'archer' ? 15 : 25;
	if (team === 'player' && playerCoins >= cost) {
		playerCoins -= cost;
		if (unitType === 'worker') {
			unit = new Worker('player');
		} else {
			unit = new CombatUnit('player', unitType);
		}
		if (!zombieMode && unitType !== 'worker') {
			// Position combat units in front of tower in normal mode with better spacing
			var unitCount = playerUnits.length;
			var spreadRadius = 300;
			var angle = unitCount * 0.5 % (Math.PI * 2);
			unit.x = playerTowers[0].x + Math.cos(angle) * spreadRadius;
			unit.y = playerTowers[0].y - 507 + Math.sin(angle) * 100;
		} else {
			var unitCount = playerUnits.length;
			var spreadRadius = 200;
			var angle = unitCount * 0.8 % (Math.PI * 2);
			unit.x = playerTowers[0].x + Math.cos(angle) * spreadRadius;
			unit.y = playerTowers[0].y - 100 + Math.sin(angle) * 50;
		}
		playerUnits.push(unit);
		game.addChild(unit);
		LK.getSound('unitSpawn').play();
	} else if (team === 'ai' && aiCoins >= cost) {
		aiCoins -= cost;
		if (unitType === 'worker') {
			unit = new Worker('ai');
		} else {
			unit = new CombatUnit('ai', unitType);
		}
		var unitCount = aiUnits.length;
		var spreadRadius = 200;
		var angle = unitCount * 0.8 % (Math.PI * 2);
		unit.x = aiTowers[0].x + Math.cos(angle) * spreadRadius;
		unit.y = aiTowers[0].y + 100 + Math.sin(angle) * 50;
		aiUnits.push(unit);
		game.addChild(unit);
	}
}
function spawnZombie() {
	var zombie = new Zombie(zombieWaveNumber);
	zombie.x = Math.random() * 1800 + 124; // Random X position across screen width
	zombie.y = 50; // Spawn at top of screen
	zombies.push(zombie);
	game.addChild(zombie);
}
function startZombieWave() {
	zombieWaveInProgress = true;
	zombiesToSpawnInWave = 3 + zombieWaveNumber * 2; // Wave 1: 5 zombies, Wave 2: 7 zombies, etc.
	zombiesInCurrentWave = 0;
	zombieWaveSpawnTimer = 0;
	// Update wave display
	if (zombieMode) {
		waveDisplay.setText('Wave: ' + zombieWaveNumber);
	}
}
function checkWaveComplete() {
	// Check if all zombies in current wave are spawned and destroyed
	if (zombieWaveInProgress && zombiesInCurrentWave >= zombiesToSpawnInWave && zombies.length === 0) {
		zombieWaveInProgress = false;
		zombieWaveNumber++;
		// Start next wave after 10 seconds (doubled from 5 seconds)
		zombieWaveSpawnTimer = -600; // 10 seconds delay before next wave
	}
}
function aiLogic() {
	if (aiActionTimer <= 0) {
		if (aiCoins >= 25 && Math.random() < 0.1) {
			spawnUnit('ai', 'dragon');
		} else if (aiCoins >= 15 && Math.random() < 0.15) {
			spawnUnit('ai', 'archer');
		} else if (aiCoins >= 20 && Math.random() < 0.2) {
			spawnUnit('ai', 'wizard');
		} else if (aiCoins >= 10 && Math.random() < 0.3) {
			spawnUnit('ai', 'warrior');
		} else if (aiCoins >= 5 && Math.random() < 0.4) {
			spawnUnit('ai', 'worker');
		}
		aiActionTimer = 120;
	}
	aiActionTimer--;
}
function checkGameEnd() {
	if (playerTowers.length === 0) {
		LK.showGameOver();
	} else if (!zombieMode && aiTowers.length === 0) {
		LK.showYouWin();
	}
}
function cleanupCollectedCoins() {
	// Clean up from main coins array
	for (var i = coins.length - 1; i >= 0; i--) {
		if (coins[i].collected) {
			coins[i].destroy();
			coins.splice(i, 1);
		}
	}
	// Clean up from player coins array
	for (var i = playerCoins_array.length - 1; i >= 0; i--) {
		if (playerCoins_array[i].collected) {
			playerCoins_array.splice(i, 1);
		}
	}
	// Clean up from AI coins array
	for (var i = aiCoins_array.length - 1; i >= 0; i--) {
		if (aiCoins_array[i].collected) {
			aiCoins_array.splice(i, 1);
		}
	}
}
// Button event handlers
workerButton.down = function () {
	spawnUnit('player', 'worker');
};
warriorButton.down = function () {
	spawnUnit('player', 'warrior');
};
wizardButton.down = function () {
	spawnUnit('player', 'wizard');
};
archerButton.down = function () {
	spawnUnit('player', 'archer');
};
dragonButton.down = function () {
	spawnUnit('player', 'dragon');
};
// Character image event handlers
workerImage.down = function () {
	spawnUnit('player', 'worker');
};
warriorImage.down = function () {
	spawnUnit('player', 'warrior');
};
wizardImage.down = function () {
	spawnUnit('player', 'wizard');
};
archerImage.down = function () {
	spawnUnit('player', 'archer');
};
dragonImage.down = function () {
	spawnUnit('player', 'dragon');
};
// Attack button event handler
attackButton.down = function () {
	if (!zombieMode) {
		// Make all waiting player units start attacking
		for (var i = 0; i < playerUnits.length; i++) {
			var unit = playerUnits[i];
			if (unit.unitType !== 'worker') {
				unit.isWaiting = false;
			}
		}
	}
};
// Initialize game function
function initializeGame() {
	background.visible = true;
	// Show UI elements when game starts
	coinDisplay.visible = true;
	unifiedBackground.visible = true;
	workerButton.visible = true;
	warriorButton.visible = true;
	wizardButton.visible = true;
	archerButton.visible = true;
	dragonButton.visible = true;
	workerImage.visible = true;
	warriorImage.visible = true;
	wizardImage.visible = true;
	archerImage.visible = true;
	dragonImage.visible = true;
	// Show attack button only in normal mode
	if (!zombieMode) {
		attackButton.visible = true;
	} else {
		// Show wave display in zombie mode
		waveDisplay.visible = true;
		waveDisplay.setText('Wave: ' + zombieWaveNumber);
	}
	// Reset zombie wave system
	zombieWaveNumber = 1;
	zombieWaveSpawnTimer = -1800; // 30 second delay (30 * 60 FPS = 1800 frames)
	zombieWaveInProgress = false;
	zombiesInCurrentWave = 0;
	zombiesToSpawnInWave = 0;
	// Play game music when match starts
	LK.playMusic('Song');
	initializeTowers();
	// Spawn initial workers for both teams
	var playerWorker = new Worker('player');
	playerWorker.x = playerTowers[0].x + 50;
	playerWorker.y = playerTowers[0].y - 100;
	playerUnits.push(playerWorker);
	game.addChild(playerWorker);
	// AI worker (only in normal mode)
	if (!zombieMode) {
		var aiWorker = new Worker('ai');
		aiWorker.x = aiTowers[0].x + 50;
		aiWorker.y = aiTowers[0].y + 100;
		aiUnits.push(aiWorker);
		game.addChild(aiWorker);
	}
}
// Main game loop
game.update = function () {
	if (gameState === 'playing') {
		// Update coin display
		coinDisplay.setText('Golds: ' + playerCoins);
		// Spawn coins
		coinSpawnTimer++;
		if (coinSpawnTimer >= 36) {
			// 5x more frequent (180/5 = 36)
			spawnCoin();
			coinSpawnTimer = 0;
		}
		// AI logic (only in normal mode)
		if (!zombieMode) {
			aiLogic();
		}
		// Clean up collected coins
		cleanupCollectedCoins();
		// Zombie mode logic
		if (zombieMode) {
			zombieWaveSpawnTimer++;
			// Start first wave or next wave after delay
			if (!zombieWaveInProgress && zombieWaveSpawnTimer >= 0) {
				startZombieWave();
			}
			// Spawn zombies in current wave
			if (zombieWaveInProgress && zombiesInCurrentWave < zombiesToSpawnInWave) {
				if (zombieWaveSpawnTimer % 60 === 0) {
					// Spawn one zombie every second during wave
					spawnZombie();
					zombiesInCurrentWave++;
				}
			}
			// Check if current wave is complete
			checkWaveComplete();
			// Clean up off-screen zombies
			for (var i = zombies.length - 1; i >= 0; i--) {
				if (zombies[i].y > 2800) {
					zombies[i].destroy();
					zombies.splice(i, 1);
				}
			}
		}
		// Check game end conditions
		checkGameEnd();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -1108,9 +1108,9 @@
 howToPlayTitle.x = 1024;
 howToPlayTitle.y = 400;
 howToPlayOverlay.addChild(howToPlayTitle);
 // How to Play instructions
-var instructionsText = new Text2('NORMAL MODE:\n• Collect gold coins with workers\n• Spend gold to recruit units\n• Press Attack to command units to advance\n• Destroy enemy tower to win\n\nUNIT TYPES & STATS:\n• Worker: 5 gold, 10 HP, 5 damage, collects coins\n• Warrior: 10 gold, 20 HP, 10 damage, melee combat\n• Archer: 15 gold, 30 HP, 20 damage, ranged arrows\n• Wizard: 20 gold, 40 HP, 30 damage, magic attacks\n• Dragon: 25 gold, 50 HP, 40 damage, fire breath\n\nTOWERS:\n• Player Tower: 500 HP, 1 damage per second, attacks nearest enemy\n• AI Tower: 500 HP, 1 damage per second, attacks nearest enemy\n• Attack range: 400 pixels\n\nZOMBIE MODE:\n• Survive endless zombie waves\n• Units automatically attack zombies first\n• Zombies spawn 30 seconds after start\n• Wave 1: 5 zombies (30 HP, 10 damage)\n• Each wave: +2 zombies, +15 HP, +5 damage\n• Defend your tower at all costs!', {
+var instructionsText = new Text2('NORMAL MODE:\n• Collect gold coins with workers\n• Spend gold to recruit units\n• Press Attack to command units to advance\n• Destroy enemy tower to win\n\nUNIT TYPES & STATS:\n• Worker: 5 gold, 10 HP, 5 damage, collects coins\n• Warrior: 10 gold, 20 HP, 10 damage, melee combat\n• Archer: 15 gold, 30 HP, 20 damage, ranged arrows\n• Wizard: 20 gold, 40 HP, 30 damage, magic attacks\n• Dragon: 25 gold, 50 HP, 40 damage, fire breath\n\nTOWERS:\n• Player Tower: 500 HP, 5 damage per second, attacks nearest enemy\n• AI Tower: 500 HP, 5 damage per second, attacks nearest enemy\n• Attack range: 400 pixels\n\nZOMBIE MODE:\n• Survive endless zombie waves\n• Units automatically attack zombies first\n• Zombies spawn 30 seconds after start\n• Wave 1: 5 zombies (30 HP, 10 damage)\n• Each wave: +2 zombies, +15 HP, +5 damage\n• Defend your tower at all costs!', {
 	size: 42,
 	fill: '#ffffff'
 });
 instructionsText.anchor.set(0.5, 0.5);