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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function (startX, startY, target, damage) {
	var self = Container.call(this);
	self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = startX;
	self.y = startY;
	self.target = target;
	self.damage = damage;
	self.speed = 8;
	self.update = function () {
		if (!self.target || self.target.destroyed) {
			self.removeBullet();
			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 < 10) {
			self.target.takeDamage(self.damage);
			// If this is an explosive bullet, create area damage
			if (self.isExplosive) {
				// Create explosion effect
				var explosionEffect = LK.getAsset('soldier', {
					anchorX: 0.5,
					anchorY: 0.5,
					scaleX: 0.8,
					scaleY: 0.8,
					alpha: 0.8
				});
				explosionEffect.x = self.target.x;
				explosionEffect.y = self.target.y;
				explosionEffect.tint = 0xff4444;
				game.addChild(explosionEffect);
				// Animate explosion
				tween(explosionEffect, {
					scaleX: 2.5,
					scaleY: 2.5,
					alpha: 0
				}, {
					duration: 400,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						explosionEffect.destroy();
					}
				});
				// Damage nearby enemies
				for (var i = 0; i < enemies.length; i++) {
					var enemy = enemies[i];
					if (enemy !== self.target) {
						var expDistance = Math.sqrt(Math.pow(enemy.x - self.target.x, 2) + Math.pow(enemy.y - self.target.y, 2));
						if (expDistance <= 80) {
							// Explosion radius
							enemy.takeDamage(Math.floor(self.damage * 0.6)); // 60% damage to nearby enemies
						}
					}
				}
			}
			self.removeBullet();
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.removeBullet = function () {
		for (var i = bullets.length - 1; i >= 0; i--) {
			if (bullets[i] === self) {
				bullets.splice(i, 1);
				break;
			}
		}
		self.destroy();
	};
	return self;
});
var Enemy = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type;
	self.pathIndex = 0;
	self.x = path[0].x;
	self.y = path[0].y;
	self.lastPathIndex = 0;
	if (type === 'soldier') {
		self.attachAsset('soldier', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var soldierEyeLeft = self.attachAsset('soldierEyeLeft', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -12,
			y: -8
		});
		var soldierEyeRight = self.attachAsset('soldierEyeRight', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 12,
			y: -8
		});
		var soldierMouth = self.attachAsset('soldierMouth', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 0,
			y: 8
		});
		self.health = 100;
		self.maxHealth = 100;
		self.speed = 2.5;
		self.reward = 10;
		// Add shield for soldiers after 2 bosses killed
		self.hasShield = false;
		self.shieldGraphics = null;
		if (bossKillCount >= 2 && Math.random() < 0.6) {
			// 60% chance for shield after 2 bosses
			self.hasShield = true;
			self.shieldGraphics = self.attachAsset('soldierShield', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: 0,
				y: 0,
				alpha: 0.8
			});
			self.health = 150; // Increased health with shield
			self.maxHealth = 150;
		}
	} else if (type === 'tank') {
		self.attachAsset('tank', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var tankNozzle = self.attachAsset('tankNozzle', {
			anchorX: 0,
			anchorY: 0.5,
			x: 40,
			y: 0
		});
		self.health = 250;
		self.maxHealth = 250;
		self.speed = 2;
		self.reward = 15;
	} else if (type === 'runner') {
		var runnerWingLeft = self.attachAsset('runnerWingLeft', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -28,
			y: 0,
			rotation: 0
		});
		var runnerWingRight = self.attachAsset('runnerWingRight', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 28,
			y: 0,
			rotation: 0
		});
		self.attachAsset('runner', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		// Add wing flapping animation to make wings more visible
		self.wingFlapTimer = 0;
		tween(runnerWingLeft, {
			rotation: -0.3
		}, {
			duration: 300,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(runnerWingLeft, {
					rotation: 0.3
				}, {
					duration: 300,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(runnerWingLeft, {
							rotation: 0
						}, {
							duration: 300,
							easing: tween.easeInOut
						});
					}
				});
			}
		});
		tween(runnerWingRight, {
			rotation: 0.3
		}, {
			duration: 300,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(runnerWingRight, {
					rotation: -0.3
				}, {
					duration: 300,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(runnerWingRight, {
							rotation: 0
						}, {
							duration: 300,
							easing: tween.easeInOut
						});
					}
				});
			}
		});
		var runnerEyeLeft = self.attachAsset('runnerEyeLeft', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -8,
			y: -6
		});
		var runnerEyeRight = self.attachAsset('runnerEyeRight', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 8,
			y: -6
		});
		self.health = 50;
		self.maxHealth = 50;
		self.speed = 4;
		self.reward = 5;
	} else if (type === 'boss') {
		self.attachAsset('boss', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.5,
			scaleY: 1.5
		});
		var bossEyeLeft = self.attachAsset('bossEyeLeft', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -18,
			y: -12
		});
		var bossEyeRight = self.attachAsset('bossEyeRight', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 18,
			y: -12
		});
		var bossMouth = self.attachAsset('bossMouth', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 0,
			y: 12
		});
		var bossHealth = 500 + bossKillCount * 200;
		self.health = bossHealth;
		self.maxHealth = bossHealth;
		self.speed = 1;
		self.reward = 200;
	}
	// Create HP display text for enemy
	self.hpText = new Text2(self.health + ' HP', {
		size: 20,
		fill: '#ff0000'
	});
	self.hpText.anchor.set(0.5, 0.5);
	self.hpText.x = 0;
	self.hpText.y = -40;
	self.addChild(self.hpText);
	// Add attack cooldown and special abilities
	self.attackCooldown = 0;
	self.specialAbilityCooldown = 0;
	self.update = function () {
		self.move();
		// Update HP display
		self.hpText.setText(self.health + ' HP');
		// Reduce cooldowns
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		if (self.specialAbilityCooldown > 0) {
			self.specialAbilityCooldown--;
		}
		// Special abilities for different enemy types
		if (self.type === 'soldier' && self.specialAbilityCooldown <= 0) {
			self.throwBomb();
			self.specialAbilityCooldown = 180; // 3 seconds
		} else if (self.type === 'tank' && self.attackCooldown <= 0) {
			self.fireTower();
			self.attackCooldown = 120; // 2 seconds
		} else if (self.type === 'boss' && self.attackCooldown <= 0) {
			self.fireMissile();
			self.attackCooldown = 90; // 1.5 seconds
		}
		// Continuous wing flapping for runners to make wings more visible
		if (self.type === 'runner') {
			self.wingFlapTimer++;
			if (self.wingFlapTimer >= 90) {
				// Every 1.5 seconds
				var wingLeft = self.children[0]; // runnerWingLeft
				var wingRight = self.children[1]; // runnerWingRight
				tween(wingLeft, {
					rotation: -0.4
				}, {
					duration: 200,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(wingLeft, {
							rotation: 0.4
						}, {
							duration: 200,
							easing: tween.easeInOut,
							onFinish: function onFinish() {
								tween(wingLeft, {
									rotation: 0
								}, {
									duration: 200,
									easing: tween.easeInOut
								});
							}
						});
					}
				});
				tween(wingRight, {
					rotation: 0.4
				}, {
					duration: 200,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(wingRight, {
							rotation: -0.4
						}, {
							duration: 200,
							easing: tween.easeInOut,
							onFinish: function onFinish() {
								tween(wingRight, {
									rotation: 0
								}, {
									duration: 200,
									easing: tween.easeInOut
								});
							}
						});
					}
				});
				self.wingFlapTimer = 0;
			}
		}
	};
	self.move = function () {
		if (self.pathIndex >= path.length - 1) {
			self.reachedEnd();
			return;
		}
		// Check for tower collisions and damage them
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
			if (distance < 50) {
				// Collision distance
				var damage = 0;
				if (self.type === 'runner') {
					damage = 20;
				} else if (self.type === 'soldier') {
					damage = 35;
				} else if (self.type === 'tank') {
					damage = 45;
				} else if (self.type === 'boss') {
					damage = 70;
				}
				// Apply damage to shield first if active
				if (tower.shieldProtection && tower.shieldHp > 0) {
					var shieldDamage = Math.min(damage, tower.shieldHp);
					tower.shieldHp -= shieldDamage;
					damage -= shieldDamage;
					// Flash shield when taking damage
					if (tower.shieldGraphics) {
						tween(tower.shieldGraphics, {
							tint: 0xff0000
						}, {
							duration: 150,
							onFinish: function onFinish() {
								tween(tower.shieldGraphics, {
									tint: 0xffffff
								}, {
									duration: 150
								});
							}
						});
					}
					// Remove shield when depleted
					if (tower.shieldHp <= 0) {
						tower.shieldProtection = false;
						if (tower.shieldGraphics) {
							tween(tower.shieldGraphics, {
								alpha: 0,
								scaleX: 2,
								scaleY: 2
							}, {
								duration: 300,
								onFinish: function onFinish() {
									if (tower.shieldGraphics) {
										tower.shieldGraphics.destroy();
										tower.shieldGraphics = null;
									}
								}
							});
						}
					}
				}
				// Apply remaining damage to tower HP
				tower.hp -= damage;
				if (tower.hp <= 0) {
					// Remove tower from game
					for (var j = towers.length - 1; j >= 0; j--) {
						if (towers[j] === tower) {
							towers.splice(j, 1);
							break;
						}
					}
					tower.destroy();
				}
				// Enemy dies after attacking tower
				self.die();
				return;
			}
		}
		var targetPoint = path[self.pathIndex + 1];
		var dx = targetPoint.x - self.x;
		var dy = targetPoint.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 5) {
			self.pathIndex++;
			self.lastPathIndex = self.pathIndex;
		} else {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.takeDamage = function (damage) {
		// Shield absorbs damage for soldiers
		if (self.type === 'soldier' && self.hasShield && self.shieldGraphics) {
			// Shield absorbs 50% of damage
			var actualDamage = Math.ceil(damage * 0.5);
			self.health -= actualDamage;
			// Flash shield when taking damage
			tween(self.shieldGraphics, {
				tint: 0xff0000
			}, {
				duration: 150,
				onFinish: function onFinish() {
					tween(self.shieldGraphics, {
						tint: 0xffffff
					}, {
						duration: 150
					});
				}
			});
			// Remove shield when health gets low
			if (self.health <= 50 && self.shieldGraphics) {
				// Shield breaks animation
				tween(self.shieldGraphics, {
					alpha: 0,
					scaleX: 2,
					scaleY: 2
				}, {
					duration: 300,
					onFinish: function onFinish() {
						if (self.shieldGraphics) {
							self.shieldGraphics.destroy();
							self.shieldGraphics = null;
						}
						self.hasShield = false;
					}
				});
			}
		} else {
			self.health -= damage;
		}
		if (self.health <= 0) {
			self.die();
		}
	};
	self.blastTowers = function (blastRadius, blastDamage) {
		// Create visual blast effect
		var blastEffect = LK.getAsset('soldier', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.5,
			scaleY: 0.5,
			alpha: 0.8
		});
		blastEffect.x = self.x;
		blastEffect.y = self.y;
		blastEffect.tint = 0xff4444;
		game.addChild(blastEffect);
		// Animate blast expanding
		tween(blastEffect, {
			scaleX: 3,
			scaleY: 3,
			alpha: 0
		}, {
			duration: 500,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				blastEffect.destroy();
			}
		});
		// Damage towers within blast radius
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
			if (distance <= blastRadius) {
				var damage = blastDamage;
				// Apply damage to shield first if active
				if (tower.shieldProtection && tower.shieldHp > 0) {
					var shieldDamage = Math.min(damage, tower.shieldHp);
					tower.shieldHp -= shieldDamage;
					damage -= shieldDamage;
					// Flash shield when taking damage
					if (tower.shieldGraphics) {
						tween(tower.shieldGraphics, {
							tint: 0xff0000
						}, {
							duration: 150,
							onFinish: function onFinish() {
								tween(tower.shieldGraphics, {
									tint: 0xffffff
								}, {
									duration: 150
								});
							}
						});
					}
					// Remove shield when depleted
					if (tower.shieldHp <= 0) {
						tower.shieldProtection = false;
						if (tower.shieldGraphics) {
							tween(tower.shieldGraphics, {
								alpha: 0,
								scaleX: 2,
								scaleY: 2
							}, {
								duration: 300,
								onFinish: function onFinish() {
									if (tower.shieldGraphics) {
										tower.shieldGraphics.destroy();
										tower.shieldGraphics = null;
									}
								}
							});
						}
					}
				}
				// Apply remaining damage to tower HP
				tower.hp -= damage;
				// Flash tower red to show damage
				tween(tower, {
					tint: 0xff0000
				}, {
					duration: 200,
					onFinish: function onFinish() {
						tween(tower, {
							tint: 0xffffff
						}, {
							duration: 200
						});
					}
				});
				if (tower.hp <= 0) {
					// Remove tower from game
					for (var j = towers.length - 1; j >= 0; j--) {
						if (towers[j] === tower) {
							towers.splice(j, 1);
							break;
						}
					}
					tower.destroy();
				}
			}
		}
	};
	self.die = function () {
		if (self.type === 'boss') {
			bossKillCount++;
		}
		// Drop chances for different enemy types
		var dropChance = Math.random();
		var shouldDrop = false;
		var dropMultiplier = 1;
		// Every wave special item drops guaranteed
		if (waveSpecialItemDropped === false) {
			shouldDrop = true;
			waveSpecialItemDropped = true;
		}
		// Boss kills drop 2 special items
		if (self.type === 'boss') {
			shouldDrop = true;
			dropMultiplier = 2;
		}
		// Regular drop chances (if not already dropping from wave/boss)
		if (!shouldDrop) {
			if (self.type === 'runner' && dropChance < 0.008) {
				shouldDrop = true;
			} else if (self.type === 'soldier' && dropChance < 0.002) {
				shouldDrop = true;
			} else if (self.type === 'tank' && dropChance < 0.0004) {
				shouldDrop = true;
			}
		}
		if (shouldDrop) {
			for (var dropCount = 0; dropCount < dropMultiplier; dropCount++) {
				var itemType = ['bomb', 'shield', 'missile'][Math.floor(Math.random() * 3)];
				var specialItem;
				if (itemType === 'bomb') {
					specialItem = LK.getAsset('soldier', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.7,
						scaleY: 0.7
					});
					specialItem.tint = 0x000000;
					// Add pulsing effect to make bomb more visible
					tween(specialItem, {
						scaleX: 0.8,
						scaleY: 0.8,
						alpha: 0.8
					}, {
						duration: 800,
						easing: tween.easeInOut,
						onFinish: function onFinish() {
							tween(specialItem, {
								scaleX: 0.7,
								scaleY: 0.7,
								alpha: 1
							}, {
								duration: 800,
								easing: tween.easeInOut
							});
						}
					});
				} else if (itemType === 'shield') {
					specialItem = LK.getAsset('soldierShield', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.6,
						scaleY: 0.6
					});
					specialItem.tint = 0xc0c0c0;
				} else if (itemType === 'missile') {
					// Create calendar base (rectangular)
					specialItem = LK.getAsset('tank', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.6,
						scaleY: 0.8
					});
					specialItem.tint = 0xffffff; // White calendar base
					// Add corn on top (yellow ellipse)
					var corn = specialItem.attachAsset('soldier', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.3,
						scaleY: 0.5,
						x: 0,
						y: -25
					});
					corn.tint = 0xffdd00; // Yellow corn color
				}
				// Position item vertically beside cannon (left side)
				var cannonX = 500; // Cannon button X position
				var baseY = 2400; // Above cannon button
				specialItem.x = cannonX - 150; // Left side of cannon
				specialItem.y = baseY - specialItems.length * 80; // Stack vertically
				// Add name text below special item
				var nameText = new Text2(itemType.charAt(0).toUpperCase() + itemType.slice(1), {
					size: 25,
					fill: '#ffffff'
				});
				nameText.anchor.set(0.5, 0.5);
				nameText.x = 0;
				nameText.y = 45;
				specialItem.addChild(nameText);
				// Store item type and dragging state
				specialItem.itemType = itemType;
				specialItem.isDragging = false;
				specialItem.startDragX = 0;
				specialItem.startDragY = 0;
				// Add to special items array for tracking
				specialItems.push(specialItem);
				game.addChild(specialItem);
				// Add down handler for dragging special items
				specialItem.down = function (localX, localY, obj) {
					this.isDragging = true;
					this.startDragX = localX;
					this.startDragY = localY;
					this.alpha = 0.7; // Make slightly transparent while dragging
				};
				// Animate special item with gentle floating effect
				tween(specialItem, {
					y: specialItem.y - 10,
					alpha: 0.9
				}, {
					duration: 1000,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						tween(specialItem, {
							y: specialItem.y + 10,
							alpha: 1
						}, {
							duration: 1000,
							easing: tween.easeInOut,
							onFinish: function onFinish() {
								// Loop the floating animation
								if (specialItem && !specialItem.destroyed) {
									tween(specialItem, {
										y: specialItem.y - 10,
										alpha: 0.9
									}, {
										duration: 1000,
										easing: tween.easeInOut
									});
								}
							}
						});
					}
				});
			}
		}
		// Special death effects for different enemy types
		if (self.type === 'runner') {
			// Runner blasts with smaller radius and damage
			self.blastTowers(120, 15);
		} else if (self.type === 'soldier') {
			// Soldier blasts with larger radius and damage
			self.blastTowers(150, 25);
		} else if (self.type === 'boss') {
			// Boss blasts with massive radius and damage
			self.blastTowers(200, 60);
		}
		money += self.reward;
		moneyText.setText('Money: ' + money);
		for (var i = enemies.length - 1; i >= 0; i--) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
		LK.getSound('enemyHit').play();
	};
	self.throwBomb = function () {
		if (self.type !== 'soldier') return;
		// Find nearest tower to throw bomb at
		var nearestTower = null;
		var nearestDistance = Infinity;
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
			if (distance < nearestDistance && distance <= 300) {
				// 300 pixel throw range
				nearestTower = tower;
				nearestDistance = distance;
			}
		}
		if (nearestTower) {
			// Create bomb projectile
			var bomb = LK.getAsset('soldier', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.5,
				scaleY: 0.5
			});
			bomb.x = self.x;
			bomb.y = self.y;
			bomb.tint = 0x000000;
			// Add pulsing effect to flying bomb
			tween(bomb, {
				scaleX: 0.6,
				scaleY: 0.6
			}, {
				duration: 400,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					tween(bomb, {
						scaleX: 0.5,
						scaleY: 0.5
					}, {
						duration: 400,
						easing: tween.easeInOut
					});
				}
			});
			game.addChild(bomb);
			// Animate bomb flying to tower
			tween(bomb, {
				x: nearestTower.x,
				y: nearestTower.y
			}, {
				duration: 800,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					// Explode at tower location
					var blastEffect = LK.getAsset('soldier', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.5,
						scaleY: 0.5,
						alpha: 0.8
					});
					blastEffect.x = bomb.x;
					blastEffect.y = bomb.y;
					blastEffect.tint = 0xff8800;
					game.addChild(blastEffect);
					// Animate explosion
					tween(blastEffect, {
						scaleX: 2.5,
						scaleY: 2.5,
						alpha: 0
					}, {
						duration: 400,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							blastEffect.destroy();
						}
					});
					// Damage towers in blast radius
					for (var j = 0; j < towers.length; j++) {
						var tower = towers[j];
						var distance = Math.sqrt(Math.pow(tower.x - bomb.x, 2) + Math.pow(tower.y - bomb.y, 2));
						if (distance <= 100) {
							// Bomb blast radius
							var damage = 30;
							// Apply damage to shield first if active
							if (tower.shieldProtection && tower.shieldHp > 0) {
								var shieldDamage = Math.min(damage, tower.shieldHp);
								tower.shieldHp -= shieldDamage;
								damage -= shieldDamage;
								// Flash shield when taking damage
								if (tower.shieldGraphics) {
									tween(tower.shieldGraphics, {
										tint: 0xff0000
									}, {
										duration: 150,
										onFinish: function onFinish() {
											tween(tower.shieldGraphics, {
												tint: 0xffffff
											}, {
												duration: 150
											});
										}
									});
								}
								// Remove shield when depleted
								if (tower.shieldHp <= 0) {
									tower.shieldProtection = false;
									if (tower.shieldGraphics) {
										tween(tower.shieldGraphics, {
											alpha: 0,
											scaleX: 2,
											scaleY: 2
										}, {
											duration: 300,
											onFinish: function onFinish() {
												if (tower.shieldGraphics) {
													tower.shieldGraphics.destroy();
													tower.shieldGraphics = null;
												}
											}
										});
									}
								}
							}
							// Apply remaining damage to tower HP
							tower.hp -= damage;
							// Flash tower red
							tween(tower, {
								tint: 0xff0000
							}, {
								duration: 200,
								onFinish: function onFinish() {
									tween(tower, {
										tint: 0xffffff
									}, {
										duration: 200
									});
								}
							});
							if (tower.hp <= 0) {
								// Remove tower from game
								for (var k = towers.length - 1; k >= 0; k--) {
									if (towers[k] === tower) {
										towers.splice(k, 1);
										break;
									}
								}
								tower.destroy();
							}
						}
					}
					bomb.destroy();
				}
			});
		}
	};
	self.fireTower = function () {
		if (self.type !== 'tank') return;
		// Find nearest tower to fire at
		var nearestTower = null;
		var nearestDistance = Infinity;
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
			if (distance < nearestDistance && distance <= 400) {
				// 400 pixel firing range
				nearestTower = tower;
				nearestDistance = distance;
			}
		}
		if (nearestTower) {
			// Create tank projectile
			var tankBullet = LK.getAsset('bullet', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 2,
				scaleY: 2
			});
			tankBullet.x = self.x;
			tankBullet.y = self.y;
			tankBullet.tint = 0x8b572a;
			game.addChild(tankBullet);
			// Animate bullet flying to tower
			tween(tankBullet, {
				x: nearestTower.x,
				y: nearestTower.y
			}, {
				duration: 600,
				easing: tween.linear,
				onFinish: function onFinish() {
					// Damage the tower
					var damage = 40;
					// Apply damage to shield first if active
					if (nearestTower.shieldProtection && nearestTower.shieldHp > 0) {
						var shieldDamage = Math.min(damage, nearestTower.shieldHp);
						nearestTower.shieldHp -= shieldDamage;
						damage -= shieldDamage;
						// Flash shield when taking damage
						if (nearestTower.shieldGraphics) {
							tween(nearestTower.shieldGraphics, {
								tint: 0xff0000
							}, {
								duration: 150,
								onFinish: function onFinish() {
									tween(nearestTower.shieldGraphics, {
										tint: 0xffffff
									}, {
										duration: 150
									});
								}
							});
						}
						// Remove shield when depleted
						if (nearestTower.shieldHp <= 0) {
							nearestTower.shieldProtection = false;
							if (nearestTower.shieldGraphics) {
								tween(nearestTower.shieldGraphics, {
									alpha: 0,
									scaleX: 2,
									scaleY: 2
								}, {
									duration: 300,
									onFinish: function onFinish() {
										if (nearestTower.shieldGraphics) {
											nearestTower.shieldGraphics.destroy();
											nearestTower.shieldGraphics = null;
										}
									}
								});
							}
						}
					}
					// Apply remaining damage to tower HP
					nearestTower.hp -= damage;
					// Flash tower red
					tween(nearestTower, {
						tint: 0xff0000
					}, {
						duration: 200,
						onFinish: function onFinish() {
							tween(nearestTower, {
								tint: 0xffffff
							}, {
								duration: 200
							});
						}
					});
					if (nearestTower.hp <= 0) {
						// Remove tower from game
						for (var j = towers.length - 1; j >= 0; j--) {
							if (towers[j] === nearestTower) {
								towers.splice(j, 1);
								break;
							}
						}
						nearestTower.destroy();
					}
					tankBullet.destroy();
				}
			});
		}
	};
	self.fireMissile = function () {
		if (self.type !== 'boss') return;
		// Find nearest tower to fire missile at
		var nearestTower = null;
		var nearestDistance = Infinity;
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - self.x, 2) + Math.pow(tower.y - self.y, 2));
			if (distance < nearestDistance && distance <= 500) {
				// 500 pixel missile range
				nearestTower = tower;
				nearestDistance = distance;
			}
		}
		if (nearestTower) {
			// Create boss missile
			var missile = LK.getAsset('boss', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.4,
				scaleY: 0.4
			});
			missile.x = self.x;
			missile.y = self.y;
			missile.tint = 0xff0000;
			game.addChild(missile);
			// Animate missile flying to tower
			tween(missile, {
				x: nearestTower.x,
				y: nearestTower.y
			}, {
				duration: 1000,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					// Create explosion effect
					var explosionEffect = LK.getAsset('boss', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.6,
						scaleY: 0.6,
						alpha: 0.9
					});
					explosionEffect.x = missile.x;
					explosionEffect.y = missile.y;
					explosionEffect.tint = 0xffaa00;
					game.addChild(explosionEffect);
					// Animate explosion
					tween(explosionEffect, {
						scaleX: 3,
						scaleY: 3,
						alpha: 0
					}, {
						duration: 600,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							explosionEffect.destroy();
						}
					});
					// Damage towers in missile blast radius
					for (var j = 0; j < towers.length; j++) {
						var tower = towers[j];
						var distance = Math.sqrt(Math.pow(tower.x - missile.x, 2) + Math.pow(tower.y - missile.y, 2));
						if (distance <= 120) {
							// Missile blast radius
							var damage = 50;
							// Apply damage to shield first if active
							if (tower.shieldProtection && tower.shieldHp > 0) {
								var shieldDamage = Math.min(damage, tower.shieldHp);
								tower.shieldHp -= shieldDamage;
								damage -= shieldDamage;
								// Flash shield when taking damage
								if (tower.shieldGraphics) {
									tween(tower.shieldGraphics, {
										tint: 0xff0000
									}, {
										duration: 150,
										onFinish: function onFinish() {
											tween(tower.shieldGraphics, {
												tint: 0xffffff
											}, {
												duration: 150
											});
										}
									});
								}
								// Remove shield when depleted
								if (tower.shieldHp <= 0) {
									tower.shieldProtection = false;
									if (tower.shieldGraphics) {
										tween(tower.shieldGraphics, {
											alpha: 0,
											scaleX: 2,
											scaleY: 2
										}, {
											duration: 300,
											onFinish: function onFinish() {
												if (tower.shieldGraphics) {
													tower.shieldGraphics.destroy();
													tower.shieldGraphics = null;
												}
											}
										});
									}
								}
							}
							// Apply remaining damage to tower HP
							tower.hp -= damage;
							// Flash tower red
							tween(tower, {
								tint: 0xff0000
							}, {
								duration: 200,
								onFinish: function onFinish() {
									tween(tower, {
										tint: 0xffffff
									}, {
										duration: 200
									});
								}
							});
							if (tower.hp <= 0) {
								// Remove tower from game
								for (var k = towers.length - 1; k >= 0; k--) {
									if (towers[k] === tower) {
										towers.splice(k, 1);
										break;
									}
								}
								tower.destroy();
							}
						}
					}
					missile.destroy();
				}
			});
		}
	};
	self.reachedEnd = function () {
		lives--;
		livesText.setText('Lives: ' + lives);
		for (var i = enemies.length - 1; i >= 0; i--) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
		if (lives <= 0) {
			LK.showGameOver();
		}
	};
	return self;
});
var Tower = Container.expand(function (type, x, y) {
	var self = Container.call(this);
	self.type = type;
	self.x = x;
	self.y = y;
	self.range = 200;
	self.shootCooldown = 0;
	self.target = null;
	if (type === 'cannon') {
		self.attachAsset('cannon', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.damage = 30;
		self.fireRate = 60;
		self.range = 120;
		self.hp = 190;
		self.maxHp = 190;
	} else if (type === 'sniper') {
		self.attachAsset('sniper', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var sniperTriangle1 = self.attachAsset('sniperTriangle1', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -15,
			y: -10,
			rotation: Math.PI / 4
		});
		var sniperTriangle2 = self.attachAsset('sniperTriangle2', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 15,
			y: -10,
			rotation: -Math.PI / 4
		});
		self.damage = 80;
		self.fireRate = 120;
		self.range = 350;
		self.hp = 240;
		self.maxHp = 240;
	} else if (type === 'laser') {
		self.attachAsset('laser', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.damage = 15;
		self.fireRate = 20;
		self.hp = 150;
		self.maxHp = 150;
	}
	// Create HP display text
	self.hpText = new Text2(self.hp + ' HP', {
		size: 25,
		fill: '#ffffff'
	});
	self.hpText.anchor.set(0.5, 0.5);
	self.hpText.x = 0;
	self.hpText.y = -60;
	self.addChild(self.hpText);
	// Add HP regeneration timer
	self.hpRegenTimer = 0;
	if (type === 'laser') {
		self.hpRegenRate = 120; // 2 seconds at 60 FPS
	} else if (type === 'cannon') {
		self.hpRegenRate = 165; // 2.75 seconds at 60 FPS
	} else if (type === 'sniper') {
		self.hpRegenRate = 225; // 3.75 seconds at 60 FPS
	}
	self.hpRegenAmount = Math.ceil(self.maxHp * 0.1); // Regenerate 10% of max HP
	// Special item enhancement properties
	self.bombEnhanced = false;
	self.bombEnhancedTimer = 0;
	self.shieldEnhanced = false;
	self.shieldEnhancedTimer = 0;
	self.shieldProtection = false;
	self.shieldGraphics = null;
	self.shieldHp = 0;
	self.shieldMaxHp = 70;
	self.missileEnhanced = false;
	self.missileEnhancedTimer = 0;
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
		self.findTarget();
		if (self.target && self.shootCooldown <= 0) {
			self.shoot();
			self.shootCooldown = self.fireRate;
		}
		// HP regeneration logic
		if (self.hp < self.maxHp) {
			self.hpRegenTimer++;
			if (self.hpRegenTimer >= self.hpRegenRate) {
				self.hp = Math.min(self.hp + self.hpRegenAmount, self.maxHp);
				self.hpRegenTimer = 0;
				// Visual regeneration effect
				tween(self, {
					tint: 0x00ff00
				}, {
					duration: 200,
					onFinish: function onFinish() {
						tween(self, {
							tint: 0xffffff
						}, {
							duration: 200
						});
					}
				});
			}
		}
		// Update HP display
		if (self.shieldProtection && self.shieldHp > 0) {
			self.hpText.setText(self.hp + ' HP + ' + self.shieldHp + ' Shield');
		} else {
			self.hpText.setText(self.hp + ' HP');
		}
	};
	self.findTarget = function () {
		var closestEnemy = null;
		var closestDistance = Infinity;
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			var distance = Math.sqrt(Math.pow(enemy.x - self.x, 2) + Math.pow(enemy.y - self.y, 2));
			if (distance <= self.range && distance < closestDistance) {
				closestEnemy = enemy;
				closestDistance = distance;
			}
		}
		self.target = closestEnemy;
	};
	self.shoot = function () {
		if (self.target) {
			var finalDamage = self.damage;
			// Check if tower has special item enhancements active
			if (self.bombEnhanced && self.bombEnhancedTimer > 0) {
				finalDamage = Math.floor(finalDamage * 1.5); // 50% damage boost from bomb
				self.bombEnhancedTimer--;
				if (self.bombEnhancedTimer <= 0) {
					self.bombEnhanced = false;
				}
			}
			if (self.missileEnhanced && self.missileEnhancedTimer > 0) {
				// Missile enhancement: chance for explosive bullets
				if (Math.random() < 0.3) {
					// 30% chance for explosive shot
					finalDamage = Math.floor(finalDamage * 2); // Double damage for explosive shot
					// Visual effect for explosive bullet
					var explosiveBullet = new Bullet(self.x, self.y, self.target, finalDamage);
					explosiveBullet.isExplosive = true;
					bullets.push(explosiveBullet);
					game.addChild(explosiveBullet);
				} else {
					var bullet = new Bullet(self.x, self.y, self.target, finalDamage);
					bullets.push(bullet);
					game.addChild(bullet);
				}
				self.missileEnhancedTimer--;
				if (self.missileEnhancedTimer <= 0) {
					self.missileEnhanced = false;
				}
			} else {
				var bullet = new Bullet(self.x, self.y, self.target, finalDamage);
				bullets.push(bullet);
				game.addChild(bullet);
			}
			LK.getSound('shoot').play();
		}
	};
	self.updateFireArrow = function () {
		// Arrow display disabled
	};
	return self;
});
var TowerSpot = Container.expand(function (x, y) {
	var self = Container.call(this);
	self.attachAsset('towerSpot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.occupied = false;
	self.tower = null;
	self.down = function (localX, localY, obj) {
		if (!self.occupied && selectedTowerType && canAffordTower(selectedTowerType)) {
			self.placeTower(selectedTowerType);
		}
	};
	self.placeTower = function (type) {
		var cost = getTowerCost(type);
		if (money >= cost) {
			money -= cost;
			moneyText.setText('Money: ' + money);
			var tower = new Tower(type, self.x, self.y);
			towers.push(tower);
			game.addChild(tower);
			self.occupied = true;
			self.tower = tower;
			self.alpha = 0.3;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
var money = 350;
var lives = 20;
var wave = 1;
var waveTimer = 0;
var spawnTimer = 0;
var enemiesInWave = 0;
var enemiesSpawned = 0;
var selectedTowerType = null;
var selectedTower = null;
var rangeIndicator = null;
var bossKillCount = 0;
var draggedTower = null;
var draggedTowerType = null;
var isDragging = false;
var towers = [];
var enemies = [];
var bullets = [];
var towerSpots = [];
var specialItems = [];
var waveSpecialItemDropped = false;
var path = [{
	x: 1024,
	y: 0
}, {
	x: 1024,
	y: 200
}, {
	x: 1600,
	y: 200
}, {
	x: 1600,
	y: 400
}, {
	x: 400,
	y: 400
}, {
	x: 400,
	y: 600
}, {
	x: 1700,
	y: 600
}, {
	x: 1700,
	y: 800
}, {
	x: 300,
	y: 800
}, {
	x: 300,
	y: 1000
}, {
	x: 1500,
	y: 1000
}, {
	x: 1500,
	y: 1200
}, {
	x: 500,
	y: 1200
}, {
	x: 500,
	y: 1400
}, {
	x: 1600,
	y: 1400
}, {
	x: 1600,
	y: 1600
}, {
	x: 200,
	y: 1600
}, {
	x: 200,
	y: 1800
}, {
	x: 1700,
	y: 1800
}, {
	x: 1700,
	y: 2000
}, {
	x: 600,
	y: 2000
}, {
	x: 600,
	y: 2200
}, {
	x: 1400,
	y: 2200
}, {
	x: 1400,
	y: 2400
}, {
	x: 1024,
	y: 2400
}, {
	x: 1024,
	y: 2600
}];
// Create path visualization
for (var i = 0; i < path.length - 1; i++) {
	var pathSegment = LK.getAsset('path', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	pathSegment.x = (path[i].x + path[i + 1].x) / 2;
	pathSegment.y = (path[i].y + path[i + 1].y) / 2;
	var dx = path[i + 1].x - path[i].x;
	var dy = path[i + 1].y - path[i].y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	if (Math.abs(dx) > Math.abs(dy)) {
		pathSegment.width = distance;
		pathSegment.height = 120;
	} else {
		pathSegment.width = 120;
		pathSegment.height = distance;
	}
	game.addChild(pathSegment);
}
// UI Elements
var moneyText = new Text2('Money: ' + money, {
	size: 60,
	fill: '#ffffff'
});
moneyText.anchor.set(0, 0);
LK.gui.topLeft.addChild(moneyText);
moneyText.x = 120;
moneyText.y = 20;
var livesText = new Text2('Lives: ' + lives, {
	size: 60,
	fill: '#ffffff'
});
livesText.anchor.set(0, 0);
LK.gui.topLeft.addChild(livesText);
livesText.x = 120;
livesText.y = 100;
var waveText = new Text2('Wave: ' + wave, {
	size: 60,
	fill: '#ffffff'
});
waveText.anchor.set(0, 0);
LK.gui.topLeft.addChild(waveText);
waveText.x = 120;
waveText.y = 180;
// Tower selection buttons
var cannonButton = LK.getAsset('cannon', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
cannonButton.x = 500;
cannonButton.y = 2500;
game.addChild(cannonButton);
var sniperButton = LK.getAsset('sniper', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
sniperButton.x = 900;
sniperButton.y = 2500;
game.addChild(sniperButton);
var laserButton = LK.getAsset('laser', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 0.8,
	scaleY: 0.8
});
laserButton.x = 1300;
laserButton.y = 2500;
game.addChild(laserButton);
var cannonNameText = new Text2('Cannon', {
	size: 35,
	fill: '#ffffff'
});
cannonNameText.anchor.set(0.5, 0.5);
cannonNameText.x = 500;
cannonNameText.y = 2660;
game.addChild(cannonNameText);
var sniperNameText = new Text2('Sniper', {
	size: 35,
	fill: '#ffffff'
});
sniperNameText.anchor.set(0.5, 0.5);
sniperNameText.x = 900;
sniperNameText.y = 2660;
game.addChild(sniperNameText);
var laserNameText = new Text2('Laser', {
	size: 35,
	fill: '#ffffff'
});
laserNameText.anchor.set(0.5, 0.5);
laserNameText.x = 1300;
laserNameText.y = 2660;
game.addChild(laserNameText);
var cannonCostText = new Text2('50', {
	size: 40,
	fill: '#ffffff'
});
cannonCostText.anchor.set(0.5, 0.5);
cannonCostText.x = 500;
cannonCostText.y = 2620;
game.addChild(cannonCostText);
var sniperCostText = new Text2('100', {
	size: 40,
	fill: '#ffffff'
});
sniperCostText.anchor.set(0.5, 0.5);
sniperCostText.x = 900;
sniperCostText.y = 2620;
game.addChild(sniperCostText);
var laserCostText = new Text2('30', {
	size: 40,
	fill: '#ffffff'
});
laserCostText.anchor.set(0.5, 0.5);
laserCostText.x = 1300;
laserCostText.y = 2620;
game.addChild(laserCostText);
function getTowerCost(type) {
	if (type === 'cannon') return 50;
	if (type === 'sniper') return 100;
	if (type === 'laser') return 30;
	return 0;
}
function canAffordTower(type) {
	return money >= getTowerCost(type);
}
function updateButtonColors() {
	cannonButton.tint = canAffordTower('cannon') ? 0xffffff : 0x666666;
	sniperButton.tint = canAffordTower('sniper') ? 0xffffff : 0x666666;
	laserButton.tint = canAffordTower('laser') ? 0xffffff : 0x666666;
}
function spawnEnemy() {
	var enemyType;
	if (wave >= 6 && enemiesSpawned === 0) {
		// Spawn boss as first enemy after wave 6
		enemyType = 'boss';
	} else {
		var rand = Math.random();
		if (rand < 0.4) {
			enemyType = 'soldier';
		} else if (rand < 0.6) {
			enemyType = 'tank';
		} else {
			enemyType = 'runner';
		}
	}
	var enemy = new Enemy(enemyType);
	enemies.push(enemy);
	game.addChild(enemy);
	enemiesSpawned++;
}
function startWave() {
	enemiesInWave = 5 + wave * 2;
	enemiesSpawned = 0;
	spawnTimer = 0;
	waveSpecialItemDropped = false; // Reset special item drop flag for new wave
}
game.move = function (x, y, obj) {
	if (isDragging && draggedTowerType) {
		// Update range indicator position during drag
		if (rangeIndicator) {
			rangeIndicator.x = x;
			rangeIndicator.y = y;
		}
	}
	// Handle special item dragging
	for (var i = 0; i < specialItems.length; i++) {
		var item = specialItems[i];
		if (item.isDragging) {
			item.x = x;
			item.y = y;
			break;
		}
	}
};
game.down = function (x, y, obj) {
	// Clear previous selection
	if (rangeIndicator && !isDragging) {
		rangeIndicator.destroy();
		rangeIndicator = null;
	}
	selectedTower = null;
	// Check tower button clicks
	var buttonSize = 80;
	if (y >= 2500 - buttonSize / 2 && y <= 2500 + buttonSize / 2) {
		if (x >= 500 - buttonSize / 2 && x <= 500 + buttonSize / 2 && canAffordTower('cannon')) {
			draggedTowerType = 'cannon';
			isDragging = true;
			// Show range indicator for dragged tower
			rangeIndicator = LK.getAsset('towerSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 120 / 50,
				// cannon range
				scaleY: 120 / 50,
				alpha: 0.4
			});
			rangeIndicator.x = x;
			rangeIndicator.y = y;
			rangeIndicator.tint = 0x4a90e2;
			game.addChild(rangeIndicator);
		} else if (x >= 900 - buttonSize / 2 && x <= 900 + buttonSize / 2 && canAffordTower('sniper')) {
			draggedTowerType = 'sniper';
			isDragging = true;
			// Show range indicator for dragged tower
			rangeIndicator = LK.getAsset('towerSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 350 / 50,
				// sniper range
				scaleY: 350 / 50,
				alpha: 0.4
			});
			rangeIndicator.x = x;
			rangeIndicator.y = y;
			rangeIndicator.tint = 0x7ed321;
			game.addChild(rangeIndicator);
		} else if (x >= 1300 - buttonSize / 2 && x <= 1300 + buttonSize / 2 && canAffordTower('laser')) {
			draggedTowerType = 'laser';
			isDragging = true;
			// Show range indicator for dragged tower
			rangeIndicator = LK.getAsset('towerSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 200 / 50,
				// laser range
				scaleY: 200 / 50,
				alpha: 0.4
			});
			rangeIndicator.x = x;
			rangeIndicator.y = y;
			rangeIndicator.tint = 0xf5a623;
			game.addChild(rangeIndicator);
		}
	} else {
		// Check if clicking on existing tower
		var clickedTower = null;
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			var distance = Math.sqrt(Math.pow(tower.x - x, 2) + Math.pow(tower.y - y, 2));
			if (distance <= 40) {
				// Tower click radius
				clickedTower = tower;
				break;
			}
		}
		if (clickedTower) {
			// Select tower and show range
			selectedTower = clickedTower;
			rangeIndicator = LK.getAsset('towerSpot', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: selectedTower.range / 50,
				scaleY: selectedTower.range / 50,
				alpha: 0.3
			});
			rangeIndicator.x = selectedTower.x;
			rangeIndicator.y = selectedTower.y;
			rangeIndicator.tint = 0x00ff00;
			game.addChild(rangeIndicator);
		}
	}
};
game.up = function (x, y, obj) {
	if (isDragging && draggedTowerType) {
		// Place tower at release position if affordable
		var cost = getTowerCost(draggedTowerType);
		if (money >= cost) {
			money -= cost;
			moneyText.setText('Money: ' + money);
			var tower = new Tower(draggedTowerType, x, y);
			towers.push(tower);
			game.addChild(tower);
		}
		// Clean up dragging state
		isDragging = false;
		draggedTowerType = null;
		if (rangeIndicator) {
			rangeIndicator.destroy();
			rangeIndicator = null;
		}
	}
	// Handle special item placement on towers
	for (var i = 0; i < specialItems.length; i++) {
		var item = specialItems[i];
		if (item.isDragging) {
			var targetTower = null;
			// Check if dropped on a tower
			for (var j = 0; j < towers.length; j++) {
				var tower = towers[j];
				var distance = Math.sqrt(Math.pow(tower.x - x, 2) + Math.pow(tower.y - y, 2));
				if (distance <= 60) {
					// Tower placement radius
					targetTower = tower;
					break;
				}
			}
			if (targetTower) {
				// Apply special item effect to the tower
				applySpecialItemToTower(item.itemType, targetTower);
				// Remove the special item
				specialItems.splice(i, 1);
				item.destroy();
				// Reposition remaining special items
				repositionSpecialItems();
			} else {
				// Return item to original position if not dropped on tower
				var cannonX = 500;
				var baseY = 2400;
				item.x = cannonX - 150;
				item.y = baseY - i * 80;
			}
			item.isDragging = false;
			item.alpha = 1; // Restore full opacity
			break;
		}
	}
};
game.update = function () {
	// Update all towers
	for (var i = 0; i < towers.length; i++) {
		towers[i].update();
	}
	// Update all enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
	}
	// Update all bullets
	for (var i = 0; i < bullets.length; i++) {
		bullets[i].update();
	}
	// Wave management
	if (enemies.length === 0 && enemiesSpawned >= enemiesInWave) {
		waveTimer++;
		if (waveTimer >= 180) {
			// 3 seconds between waves
			wave++;
			waveText.setText('Wave: ' + wave);
			startWave();
			waveTimer = 0;
		}
	}
	// Enemy spawning
	if (enemiesSpawned < enemiesInWave) {
		spawnTimer++;
		if (spawnTimer >= 45) {
			// Spawn every 0.75 seconds
			spawnEnemy();
			spawnTimer = 0;
		}
	}
	// Update button colors based on affordability
	updateButtonColors();
};
// Add down handlers for special items
for (var i = 0; i < specialItems.length; i++) {
	var item = specialItems[i];
	item.down = function (localX, localY, obj) {
		useSpecialItem(this);
	};
}
function useSpecialItem(item) {
	// Use stored itemType property instead of tint detection
	var itemType = item.itemType;
	// Apply special item effects
	if (itemType === 'bomb') {
		// Bomb: Damages all enemies on screen
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			enemy.takeDamage(100);
			// Visual explosion effect on each enemy
			var explosionEffect = LK.getAsset('soldier', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.5,
				scaleY: 0.5,
				alpha: 0.8
			});
			explosionEffect.x = enemy.x;
			explosionEffect.y = enemy.y;
			explosionEffect.tint = 0xff4444;
			game.addChild(explosionEffect);
			tween(explosionEffect, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 400,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					explosionEffect.destroy();
				}
			});
		}
	} else if (itemType === 'shield') {
		// Shield: Heals all towers to full HP
		for (var i = 0; i < towers.length; i++) {
			var tower = towers[i];
			tower.hp = tower.maxHp;
			// Visual healing effect
			tween(tower, {
				tint: 0x00ff00
			}, {
				duration: 300,
				onFinish: function onFinish() {
					tween(tower, {
						tint: 0xffffff
					}, {
						duration: 300
					});
				}
			});
		}
	} else if (itemType === 'missile') {
		var _shake = function shake() {
			if (shakeTimer < shakeDuration) {
				game.x = originalX + (Math.random() - 0.5) * shakeAmount;
				game.y = originalY + (Math.random() - 0.5) * shakeAmount;
				shakeTimer += 16; // Approximate frame time
				LK.setTimeout(_shake, 16);
			} else {
				game.x = originalX;
				game.y = originalY;
			}
		};
		// Missile: Massive damage to all enemies and screen shake effect
		for (var i = 0; i < enemies.length; i++) {
			var enemy = enemies[i];
			enemy.takeDamage(120);
			// Large missile explosion effect
			var missileEffect = LK.getAsset('boss', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 0.8,
				scaleY: 0.8,
				alpha: 0.9
			});
			missileEffect.x = enemy.x;
			missileEffect.y = enemy.y;
			missileEffect.tint = 0xff0000;
			game.addChild(missileEffect);
			tween(missileEffect, {
				scaleX: 3,
				scaleY: 3,
				alpha: 0
			}, {
				duration: 600,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					missileEffect.destroy();
				}
			});
		}
		// Screen shake effect
		var originalX = game.x;
		var originalY = game.y;
		var shakeAmount = 10;
		var shakeDuration = 500;
		var shakeTimer = 0;
		_shake();
	}
	// Remove used special item
	for (var i = specialItems.length - 1; i >= 0; i--) {
		if (specialItems[i] === item) {
			specialItems.splice(i, 1);
			break;
		}
	}
	item.destroy();
	// Reposition remaining special items
	for (var i = 0; i < specialItems.length; i++) {
		var cannonX = 500;
		var baseY = 2400;
		specialItems[i].y = baseY - i * 80;
	}
}
function applySpecialItemToTower(itemType, tower) {
	if (itemType === 'bomb') {
		// Bomb: Enhanced damage for battle effectiveness
		tower.bombEnhanced = true;
		tower.bombEnhancedTimer = 600; // 10 seconds at 60 FPS
		// Visual effect
		tween(tower, {
			tint: 0xff4444
		}, {
			duration: 300,
			onFinish: function onFinish() {
				tween(tower, {
					tint: 0xffffff
				}, {
					duration: 300
				});
			}
		});
	} else if (itemType === 'shield') {
		// Shield: Protect tower with 70 HP shield
		tower.shieldProtection = true;
		tower.shieldHp = tower.shieldMaxHp; // 70 HP shield
		// Create visual shield graphics
		if (!tower.shieldGraphics) {
			tower.shieldGraphics = tower.attachAsset('shield', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.6,
				scaleX: 1.2,
				scaleY: 1.2
			});
		}
		// Visual healing effect
		tween(tower, {
			tint: 0x00ff00
		}, {
			duration: 300,
			onFinish: function onFinish() {
				tween(tower, {
					tint: 0xffffff
				}, {
					duration: 300
				});
			}
		});
	} else if (itemType === 'missile') {
		// Missile: Only works with cannon towers
		if (tower.type === 'cannon') {
			// Missile: Enhanced explosive shots for battle
			tower.missileEnhanced = true;
			tower.missileEnhancedTimer = 900; // 15 seconds at 60 FPS
			tower.fireRate = Math.floor(tower.fireRate * 0.8); // Slightly faster firing
			// Visual effect
			tween(tower, {
				tint: 0xff0000
			}, {
				duration: 300,
				onFinish: function onFinish() {
					tween(tower, {
						tint: 0xffffff
					}, {
						duration: 300
					});
				}
			});
			// Reset fire rate after enhancement ends
			LK.setTimeout(function () {
				if (!tower.missileEnhanced) {
					tower.fireRate = Math.floor(tower.fireRate / 0.8); // Reset to original
				}
			}, 15000);
		}
	}
}
function repositionSpecialItems() {
	for (var i = 0; i < specialItems.length; i++) {
		var cannonX = 500;
		var baseY = 2400;
		specialItems[i].x = cannonX - 150;
		specialItems[i].y = baseY - i * 80;
	}
}
// Start first wave
startWave();

===================================================================
--- original.js
+++ change.js
@@ -2003,31 +2003,34 @@
 				});
 			}
 		});
 	} else if (itemType === 'missile') {
-		// Missile: Enhanced explosive shots for battle
-		tower.missileEnhanced = true;
-		tower.missileEnhancedTimer = 900; // 15 seconds at 60 FPS
-		tower.fireRate = Math.floor(tower.fireRate * 0.8); // Slightly faster firing
-		// Visual effect
-		tween(tower, {
-			tint: 0xff0000
-		}, {
-			duration: 300,
-			onFinish: function onFinish() {
-				tween(tower, {
-					tint: 0xffffff
-				}, {
-					duration: 300
-				});
-			}
-		});
-		// Reset fire rate after enhancement ends
-		LK.setTimeout(function () {
-			if (!tower.missileEnhanced) {
-				tower.fireRate = Math.floor(tower.fireRate / 0.8); // Reset to original
-			}
-		}, 15000);
+		// Missile: Only works with cannon towers
+		if (tower.type === 'cannon') {
+			// Missile: Enhanced explosive shots for battle
+			tower.missileEnhanced = true;
+			tower.missileEnhancedTimer = 900; // 15 seconds at 60 FPS
+			tower.fireRate = Math.floor(tower.fireRate * 0.8); // Slightly faster firing
+			// Visual effect
+			tween(tower, {
+				tint: 0xff0000
+			}, {
+				duration: 300,
+				onFinish: function onFinish() {
+					tween(tower, {
+						tint: 0xffffff
+					}, {
+						duration: 300
+					});
+				}
+			});
+			// Reset fire rate after enhancement ends
+			LK.setTimeout(function () {
+				if (!tower.missileEnhanced) {
+					tower.fireRate = Math.floor(tower.fireRate / 0.8); // Reset to original
+				}
+			}, 15000);
+		}
 	}
 }
 function repositionSpecialItems() {
 	for (var i = 0; i < specialItems.length; i++) {