/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	currency: 0
});

/**** 
* Classes
****/ 
// Ally: Semi-transparent melee ally that follows sniper and attacks nearest enemy
var Ally = Container.expand(function () {
	var self = Container.call(this);
	// Use a unique ally soldier image as the ally's body
	self.graphics = self.attachAsset('allySoldier', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	self.graphics.alpha = 0.85; // Slightly transparent for distinction
	self.maxHealth = 100;
	self.health = self.maxHealth;
	self.damage = 1;
	self.speed = 3.2; // Faster than regular enemy speed
	self.attackRange = 90; // Melee range
	self.attackCooldown = 600; // ms between attacks
	// Use regular enemy walk animation for Ally
	self.walkAnimTick = 0;
	self.lastMoveDirection = 1;
	self.updateWalkAnim = function () {
		// Diagonal walk animation: rotate left and right while moving
		if (self.active) {
			// Determine direction (toward target or following sniper)
			var dir = 1;
			if (self.targetEnemy) {
				dir = self.targetEnemy.x > self.x ? 1 : -1;
			} else if (sniper) {
				dir = sniper.x > self.x ? 1 : -1;
			}
			self.lastMoveDirection = dir;
			// Diagonal walk: oscillate rotation left and right as walking
			// Use a sine wave for smooth left-right rotation
			var walkOsc = Math.sin(LK.ticks * 0.18) * 0.28; // amplitude controls max angle (radians)
			tween(self.graphics, {
				rotation: walkOsc
			}, {
				duration: 180,
				easing: tween.easeInOut
			});
		}
		// Add up/down bobbing for walk animation (like enemy)
		var walkCycle = Math.sin(LK.ticks * 0.15) * 6;
		self.graphics.y = walkCycle;
	};
	self.lastAttack = 0;
	self.targetEnemy = null;
	self.followDistance = 80; // Distance to keep from sniper
	self.active = true;
	// Health bar background
	self.healthBarBg = LK.getAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000,
		scaleX: 1.6,
		scaleY: 0.22
	});
	self.healthBarBg.y = 60;
	self.addChild(self.healthBarBg);
	// Health bar fill
	self.healthBar = LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0.5,
		tint: 0x00FF00,
		scaleX: 1.5,
		scaleY: 0.18
	});
	self.healthBar.y = 60;
	self.healthBar.x = -self.healthBarBg.width / 2;
	self.addChild(self.healthBar);
	// Update health bar
	self.updateHealthBar = function () {
		var percent = Math.max(0, self.health / self.maxHealth);
		self.healthBar.scale.x = 1.5 * percent;
		if (percent < 0.3) {
			self.healthBar.tint = 0xFF0000;
		} else if (percent < 0.6) {
			self.healthBar.tint = 0xFFFF00;
		} else {
			self.healthBar.tint = 0x00FF00;
		}
		self.healthBar.visible = percent < 1;
		self.healthBarBg.visible = percent < 1;
	};
	// Take damage
	self.takeDamage = function (amount) {
		self.health -= amount;
		self.updateHealthBar();
		LK.effects.flashObject(self, 0xff0000, 200);
		if (self.health <= 0) {
			self.active = false;
			tween(self, {
				alpha: 0
			}, {
				duration: 400
			});
			self.visible = false;
		}
	};
	// Ally update: follow sniper or attack nearest enemy
	self.update = function () {
		if (!self.active) return;
		self.updateHealthBar();
		self.updateWalkAnim();
		// Find nearest enemy in range
		var nearest = null;
		var minDist = 99999;
		for (var i = 0; i < enemies.length; i++) {
			var e = enemies[i];
			if (!e.active) continue;
			var dx = e.x - self.x;
			var dy = e.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				nearest = e;
			}
		}
		var now = Date.now();
		if (nearest) {
			// Always move toward nearest enemy if any exist
			self.targetEnemy = nearest;
			var angle = Math.atan2(nearest.y - self.y, nearest.x - self.x);
			// If not in attack range, move toward enemy
			if (minDist > self.attackRange * 0.7) {
				self.x += Math.cos(angle) * self.speed;
				self.y += Math.sin(angle) * self.speed;
			}
			// Attack if in range and cooldown ready
			if (minDist <= self.attackRange && now - self.lastAttack > self.attackCooldown) {
				self.lastAttack = now;
				nearest.takeDamage(self.damage);
				LK.effects.flashObject(nearest, 0x00FFFF, 120);
			}
		} else {
			// No enemy present, follow sniper
			self.targetEnemy = null;
			var dx = sniper.x - self.x;
			var dy = sniper.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > self.followDistance) {
				var angle = Math.atan2(dy, dx);
				self.x += Math.cos(angle) * self.speed * 0.7;
				self.y += Math.sin(angle) * self.speed * 0.7;
			}
		}
	};
	return self;
});
var BuildingShop = Container.expand(function () {
	var self = Container.call(this);
	self.isOpen = false;
	self.buildings = [{
		name: "Basic Wall",
		price: 10,
		health: 100,
		owned: false
	}, {
		name: "Reinforced Wall",
		price: 20,
		health: 200,
		owned: false
	}, {
		name: "Sniper Tower",
		price: 30,
		health: 300,
		damage: 2,
		fireRate: 2000,
		owned: false
	}];
	// Shop button
	self.shopButton = new Text2("BUILDINGS", {
		size: 80,
		fill: 0xFFFF00
	});
	self.shopButton.anchor.set(0.5, 0);
	// Add background to make button more visible
	var buttonBg = LK.getAsset('bullet', {
		width: 300,
		height: 100,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x333333
	});
	buttonBg.alpha = 0.8;
	buttonBg.y = self.shopButton.height / 2;
	self.addChild(buttonBg);
	self.addChild(self.shopButton);
	// Shop panel (hidden by default)
	self.panel = new Container();
	self.panel.visible = false;
	self.addChild(self.panel);
	// Create building options
	self.buildingItems = [];
	for (var i = 0; i < self.buildings.length; i++) {
		var building = self.buildings[i];
		var item = new Container();
		var bg = LK.getAsset('bullet', {
			width: 400,
			height: 150,
			anchorX: 0.5,
			anchorY: 0.5,
			tint: 0x333333
		});
		bg.alpha = 0.8;
		item.addChild(bg);
		var title = new Text2(building.name, {
			size: 40,
			fill: 0xFFFFFF
		});
		title.anchor.set(0.5, 0);
		title.y = -50;
		item.addChild(title);
		var info;
		if (building.name === "Sniper Tower") {
			info = new Text2("Health: " + building.health + " | Damage: " + building.damage, {
				size: 30,
				fill: 0xFFFFFF
			});
		} else {
			info = new Text2("Health: " + building.health, {
				size: 30,
				fill: 0xFFFFFF
			});
		}
		info.anchor.set(0.5, 0);
		info.y = 0;
		item.addChild(info);
		var priceText = new Text2(building.owned ? "OWNED" : "$" + building.price, {
			size: 35,
			fill: building.owned ? 0x00FF00 : 0xFFFF00
		});
		priceText.anchor.set(0.5, 0);
		priceText.y = 40;
		item.addChild(priceText);
		item.y = i * 200;
		item.buildingIndex = i;
		self.buildingItems.push(item);
		self.panel.addChild(item);
	}
	// Position panel
	self.panel.y = 250;
	// Handle shop button press
	self.shopButton.down = function (x, y, obj) {
		self.toggleShop();
	};
	// Toggle shop visibility
	self.toggleShop = function () {
		self.isOpen = !self.isOpen;
		self.panel.visible = self.isOpen;
	};
	// Handle building selection/purchase
	self.selectBuilding = function (index) {
		var building = self.buildings[index];
		if (currency >= building.price) {
			// Always allow purchase, deduct currency every time
			currency -= building.price;
			updateUI();
			// Update UI to show price (never "OWNED")
			var priceText = self.buildingItems[index].children[3];
			priceText.setText("$" + building.price, {
				fill: 0xFFFF00
			});
			LK.getSound('upgrade').play();
			// After purchase, immediately select it for placement
			var buildingType;
			var buildingHealth = building.health;
			if (index === 0) {
				buildingType = 'basic';
			} else if (index === 1) {
				buildingType = 'reinforced';
			} else if (index === 2) {
				buildingType = 'sniper';
			}
			// Create and add placeable wall
			game.placeableWall = new PlaceableWall(buildingType, buildingHealth);
			game.addChild(game.placeableWall);
			game.isPlacing = true;
			// Close shop
			self.toggleShop();
			return true;
		} else if (building.owned) {
			// (Legacy: If owned, allow placement without payment, but this should never be true now)
			var buildingType;
			var buildingHealth = building.health;
			if (index === 0) {
				buildingType = 'basic';
			} else if (index === 1) {
				buildingType = 'reinforced';
			} else if (index === 2) {
				buildingType = 'sniper';
			}
			game.placeableWall = new PlaceableWall(buildingType, buildingHealth);
			game.addChild(game.placeableWall);
			game.isPlacing = true;
			self.toggleShop();
			return true;
		} else {
			// Not enough currency
			LK.effects.flashScreen(0xFF0000, 300);
			return false;
		}
	};
	// Check if an item was clicked
	self.checkItemClick = function (x, y) {
		if (!self.isOpen) return false;
		var pos = self.toLocal({
			x: x,
			y: y
		});
		for (var i = 0; i < self.buildingItems.length; i++) {
			var item = self.buildingItems[i];
			// Use item's actual bounds for hit detection
			var bounds = item.children[0].getBounds(); // children[0] is the background
			// Convert bounds to local coordinates relative to the panel
			var itemLeft = item.x + bounds.x - bounds.width * item.children[0].anchorX;
			var itemRight = itemLeft + bounds.width;
			var itemTop = item.y + bounds.y - bounds.height * item.children[0].anchorY;
			var itemBottom = itemTop + bounds.height;
			if (pos.x >= itemLeft && pos.x <= itemRight && pos.y >= itemTop && pos.y <= itemBottom) {
				return self.selectBuilding(item.buildingIndex);
			}
		}
		return false;
	};
	// Add down event handlers to each building item
	for (var i = 0; i < self.buildingItems.length; i++) {
		var item = self.buildingItems[i];
		item.interactive = true;
		item.index = i; // Store the index
		// Using custom event handler for each item
		(function (index) {
			item.down = function (x, y, obj) {
				self.selectBuilding(index);
			};
		})(i);
	}
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	self.graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15; // Default speed, will be overridden
	self.damage = 1; // Default damage, will be overridden
	self.active = true;
	self.update = function () {
		if (!self.active) return;
		// Use directional movement if speedX and speedY are defined
		if (self.speedX !== undefined && self.speedY !== undefined) {
			self.x += self.speedX;
			self.y += self.speedY;
		} else {
			// Fallback to original vertical-only movement
			self.y -= self.speed;
		}
		// Bullet goes off screen (check all edges)
		if (self.y < -50 || self.y > 2732 + 50 || self.x < -50 || self.x > 2048 + 50) {
			self.active = false;
		}
	};
	self.hit = function () {
		self.active = false;
		LK.getSound('enemyHit').play();
		LK.effects.flashObject(self, 0xffffff, 200);
	};
	return self;
});
var Bunker = Container.expand(function () {
	var self = Container.call(this);
	self.graphics = self.attachAsset('bunker', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damageIndicator = self.attachAsset('damageIndicator', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damageIndicator.alpha = 0;
	self.damageIndicator.originalX = 0;
	self.damageIndicator.originalY = 0;
	self.showDamage = function (percentage) {
		// Make indicator more visible as health decreases
		self.damageIndicator.alpha = 1 - percentage;
		// Move the indicator based on health percentage
		// Lower health = more movement
		var moveFactor = (1 - percentage) * 10;
		self.damageIndicator.x = self.damageIndicator.originalX + (Math.random() * 2 - 1) * moveFactor;
		self.damageIndicator.y = self.damageIndicator.originalY + (Math.random() * 2 - 1) * moveFactor;
		// Change tint to become redder as health decreases
		var healthColor = Math.floor(percentage * 255);
		self.damageIndicator.tint = 255 << 16 | healthColor << 8 | healthColor;
	};
	// Store original position
	self.onAddedToStage = function () {
		self.damageIndicator.originalX = self.damageIndicator.x;
		self.damageIndicator.originalY = self.damageIndicator.y;
	};
	return self;
});
var Bush = Container.expand(function () {
	var self = Container.call(this);
	// Random bush appearance with slight variation
	var type = Math.floor(Math.random() * 3);
	var size = Math.random() * 0.5 + 0.8; // Size between 0.8 and 1.3
	var rotation = Math.random() * 0.3 - 0.15; // Slight rotation
	// Create the bush using bullet shape with green tint
	self.graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x2E8B57,
		// Sea green color
		scaleX: size,
		scaleY: size
	});
	// Apply random rotation
	self.graphics.rotation = rotation;
	// Add some details to make bushes look different from each other
	if (type === 0) {
		// First type - taller bush
		self.graphics.scale.y *= 1.3;
		self.graphics.tint = 0x228B22; // Forest green
	} else if (type === 1) {
		// Second type - wider bush
		self.graphics.scale.x *= 1.2;
		self.graphics.tint = 0x006400; // Dark green
	} else {
		// Third type - round bush
		self.graphics.tint = 0x3CB371; // Medium sea green
	}
	return self;
});
// DesertBandit: Ranged enemy that keeps distance from allies and attacks from range
var DesertBandit = Container.expand(function () {
	var self = Container.call(this);
	// Use a new image asset for Desert Bandit (add to Assets if not present)
	self.graphics = self.attachAsset('desertBandit', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2.5,
		scaleY: 2.5
	});
	self.shadow = new Shadow();
	self.shadow.y = 30;
	var baseWidth = self.graphics.width * self.graphics.scale.x;
	self.shadow.updateSize(baseWidth);
	self.addChildAt(self.shadow, 0);
	self.shadow.x = 0;
	self.shadow.graphics.scale.x = baseWidth * 0.8 / 100;
	self.shadow.graphics.alpha = 0.5;
	self.type = 'desertBandit';
	self.speed = 2.2;
	self.hp = 3;
	self.damage = 12;
	self.points = 20;
	self.currency = 4;
	self.active = true;
	self.attackRange = 420; // Bandit shooting range
	self.minDistance = 220; // Minimum distance to keep from target
	self.attackCooldown = 1200; // ms between shots
	self.lastAttack = 0;
	self.target = null;
	self.isAttacking = false;
	self.moveDirection = Math.random() > 0.5 ? 1 : -1;
	self.moveCounter = 0;
	self.maxMoveDistance = Math.random() * 30 + 20;
	// Walk animation: oscillate left/right
	self.updateWalkAnim = function () {
		var walkOsc = Math.sin(LK.ticks * 0.18) * 0.28;
		tween(self.graphics, {
			rotation: walkOsc
		}, {
			duration: 180,
			easing: tween.easeInOut
		});
		var walkCycle = Math.sin(LK.ticks * 0.15) * 6;
		self.graphics.y = walkCycle;
	};
	// Bandit fires a bullet at the target
	self.shootAt = function (target) {
		var now = Date.now();
		if (now - self.lastAttack < self.attackCooldown) return;
		self.lastAttack = now;
		if (!target || !target.active) return;
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y;
		var dx = target.x - self.x;
		var dy = target.y - self.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist === 0) dist = 0.0001;
		bullet.speedX = dx / dist * 13;
		bullet.speedY = dy / dist * 13;
		bullet.damage = self.damage;
		bullet.graphics.tint = 0xC2B280; // Sand color
		bullet.graphics.scale.set(0.7, 1.2);
		bullets.push(bullet);
		if (game && typeof game.addChild === "function") game.addChild(bullet);
		// Visual feedback
		LK.effects.flashObject(self, 0xFFD700, 120);
	};
	self.update = function () {
		if (!self.active) return;
		self.updateWalkAnim();
		// Find nearest target: prioritize wall, sniper tower, or main player, then ally
		var bestTarget = null;
		var minDist = 99999;
		// 1. Walls (sniper towers and regular)
		if (game && game.walls && game.walls.length > 0) {
			for (var i = 0; i < game.walls.length; i++) {
				var wall = game.walls[i];
				if (wall.health > 0) {
					var dx = wall.x - self.x;
					var dy = wall.y - self.y;
					var dist = Math.sqrt(dx * dx + dy * dy);
					if (dist < minDist) {
						minDist = dist;
						bestTarget = wall;
					}
				}
			}
		}
		// 2. Sniper (main player)
		if (sniper && sniper.active) {
			var dxS = sniper.x - self.x;
			var dyS = sniper.y - self.y;
			var distS = Math.sqrt(dxS * dxS + dyS * dyS);
			if (distS < minDist) {
				minDist = distS;
				bestTarget = sniper;
			}
		}
		// 3. Ally
		if (ally && ally.active) {
			var dxA = ally.x - self.x;
			var dyA = ally.y - self.y;
			var distA = Math.sqrt(dxA * dxA + dyA * dyA);
			if (distA < minDist) {
				minDist = distA;
				bestTarget = ally;
			}
		}
		self.target = bestTarget;
		// If ally is approaching, keep distance and shoot
		if (self.target && self.target === ally && minDist < self.attackRange) {
			// Move away from ally if too close
			if (minDist < self.minDistance) {
				var angleAway = Math.atan2(self.y - ally.y, self.x - ally.x);
				self.x += Math.cos(angleAway) * self.speed * 1.2;
				self.y += Math.sin(angleAway) * self.speed * 1.2;
			} else if (minDist > self.attackRange * 0.7) {
				// Move closer if too far
				var angleTo = Math.atan2(ally.y - self.y, ally.x - self.x);
				self.x += Math.cos(angleTo) * self.speed;
				self.y += Math.sin(angleTo) * self.speed;
			}
			// Stop moving if in range (do not move forward)
			// Shoot at ally if in range
			if (minDist <= self.attackRange) {
				self.shootAt(ally);
			}
			return;
		}
		// If target is wall, sniper tower, or player, attack from range
		if (self.target && minDist < self.attackRange) {
			// Keep distance: move away if too close, else shoot
			if (minDist < self.minDistance) {
				var angleAway = Math.atan2(self.y - self.target.y, self.x - self.target.x);
				self.x += Math.cos(angleAway) * self.speed * 1.1;
				self.y += Math.sin(angleAway) * self.speed * 1.1;
			} else if (minDist > self.attackRange * 0.7) {
				// Move closer if too far
				var angleTo = Math.atan2(self.target.y - self.y, self.target.x - self.x);
				self.x += Math.cos(angleTo) * self.speed;
				self.y += Math.sin(angleTo) * self.speed;
			}
			// Stop moving if in range (do not move forward)
			// Shoot at target if in range
			if (minDist <= self.attackRange) {
				self.shootAt(self.target);
			}
			return;
		}
		// Default movement: move diagonally down
		self.y += self.speed;
		self.x += self.moveDirection * (self.speed * 0.5);
		self.moveCounter += self.speed;
		if (self.moveCounter >= self.maxMoveDistance) {
			self.moveDirection *= -1;
			self.moveCounter = 0;
			self.maxMoveDistance = Math.random() * 30 + 20;
		}
		// Stay within screen bounds
		if (self.x < 50) {
			self.x = 50;
			self.moveDirection = 1;
		} else if (self.x > 2048 - 50) {
			self.x = 2048 - 50;
			self.moveDirection = -1;
		}
		// If reached bunker, attack it
		if (self.y > bunkerY - 50) {
			self.attackBunker();
		}
	};
	self.takeDamage = function (amount) {
		self.hp -= amount;
		if (self.hp <= 0) {
			self.die();
		} else {
			LK.effects.flashObject(self, 0xffffff, 200);
		}
	};
	self.die = function () {
		tween(self.shadow.graphics, {
			alpha: 0
		}, {
			duration: 300
		});
		tween(self.graphics, {
			rotation: Math.PI / 2,
			alpha: 0.2
		}, {
			duration: 500,
			easing: tween.easeOut
		});
		LK.setTimeout(function () {
			if (self.graphics) {
				tween(self.graphics, {
					alpha: 0
				}, {
					duration: 800,
					easing: tween.easeIn
				});
			}
		}, 400);
		self.active = false;
		var currentScore = LK.getScore();
		var scoreMultiplier = 1;
		if (currentScore > 300) {
			scoreMultiplier = 2.5;
		} else if (currentScore > 200) {
			scoreMultiplier = 2;
		} else if (currentScore > 100) {
			scoreMultiplier = 1.5;
		}
		LK.setScore(currentScore + self.points);
		currency += Math.ceil(self.currency * scoreMultiplier);
		updateUI();
	};
	self.attackBunker = function () {
		bunkerHealth -= self.damage;
		updateBunkerHealth();
		LK.getSound('bunkerHit').play();
		LK.effects.flashObject(bunker, 0xff0000, 500);
		bunker.damageIndicator.alpha = 1;
		self.active = false;
		if (bunkerHealth <= 0) {
			gameOver();
		}
	};
	return self;
});
var Enemy = Container.expand(function (type) {
	var self = Container.call(this);
	self.type = type || 'regular';
	// Set properties based on enemy type
	switch (self.type) {
		case 'fast':
			self.graphics = self.attachAsset('fastEnemy', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 2.5,
				scaleY: 2.5
			});
			self.speed = 3;
			self.hp = 1;
			self.damage = 10;
			self.points = 15;
			self.currency = 2;
			break;
		case 'tank':
			self.graphics = self.attachAsset('tankEnemy', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 2.5,
				scaleY: 2.5
			});
			self.speed = 1;
			self.hp = 5;
			self.damage = 25;
			self.points = 30;
			self.currency = 5;
			break;
		default:
			// regular
			self.graphics = self.attachAsset('regularEnemy', {
				anchorX: 0.5,
				anchorY: 0.5,
				scaleX: 2.5,
				scaleY: 2.5
			});
			self.speed = 2;
			self.hp = 2;
			self.damage = 15;
			self.points = 10;
			self.currency = 1;
	}
	// Create and add shadow beneath enemy
	self.shadow = new Shadow();
	self.shadow.y = 30; // Position shadow slightly below enemy
	// Update shadow size based on enemy type
	var baseWidth = self.graphics.width * self.graphics.scale.x;
	self.shadow.updateSize(baseWidth);
	self.addChildAt(self.shadow, 0); // Add shadow behind the enemy
	// Ensure the shadow is visible and properly positioned
	self.shadow.x = 0;
	self.shadow.graphics.scale.x = baseWidth * 0.8 / 100;
	self.shadow.graphics.alpha = 0.5;
	self.active = true;
	self.update = function () {
		if (!self.active) return;
		// Basic diagonal movement pattern
		if (!self.moveDirection) {
			self.moveDirection = Math.random() > 0.5 ? 1 : -1; // Random initial direction
			self.moveCounter = 0;
			self.maxMoveDistance = Math.random() * 30 + 20; // Random move distance
			self.isAttackingWall = false;
			self.attackTarget = null;
			self.attackAnimationTicks = 0;
		}
		// If enemy is attacking a wall or ally, perform attack animation
		if (self.isAttackingWall && self.attackTarget) {
			// --- Always run walk animation, even while attacking ---
			// Diagonal walk: oscillate rotation left and right as walking (like Ally)
			var walkOsc = Math.sin(LK.ticks * 0.18) * 0.28;
			// Always reset scale to default before tween to prevent cumulative shrinking
			self.graphics.scale.x = self.type === 'fast' || self.type === 'tank' || self.type === 'regular' ? 2.5 : self.graphics.scale.x;
			self.graphics.scale.y = self.type === 'fast' || self.type === 'tank' || self.type === 'regular' ? 2.5 : self.graphics.scale.y;
			tween(self.graphics, {
				rotation: walkOsc
			}, {
				duration: 180,
				easing: tween.easeInOut
			});
			// Add up/down bobbing for walk animation
			var walkCycle = Math.sin(LK.ticks * 0.15) * 6;
			self.graphics.y = walkCycle;
			// Increment animation counter
			self.attackAnimationTicks++;
			// Every 45 frames complete a full attack cycle
			if (self.attackAnimationTicks < 20) {
				// Pull back for attack - move head backwards
				if (self.attackAnimationTicks === 1) {
					tween(self.graphics, {
						rotation: -0.3,
						y: -10
					}, {
						duration: 300,
						easing: tween.easeOut
					});
				}
			} else if (self.attackAnimationTicks < 25) {
				// Forward strike - move head forward quickly
				if (self.attackAnimationTicks === 20) {
					tween(self.graphics, {
						rotation: 0.2,
						y: 10
					}, {
						duration: 150,
						easing: tween.easeIn
					});
				}
			} else {
				// Reset animation counter and damage the wall or ally
				self.attackAnimationTicks = 0;
				// Apply damage to wall or ally
				if (self.attackTarget) {
					if (self.attackTarget.takeDamage) {
						self.attackTarget.takeDamage(self.damage / 5);
						LK.effects.flashObject(self.attackTarget, 0xFF0000, 200);
					}
				}
			}
			// When wall or ally is destroyed, resume movement
			if (!self.attackTarget || self.attackTarget.health !== undefined && self.attackTarget.health <= 0 || self.attackTarget.active !== undefined && self.attackTarget.active === false) {
				self.isAttackingWall = false;
				self.attackTarget = null;
				// Reset position and rotation
				tween(self.graphics, {
					rotation: 0,
					y: 0
				}, {
					duration: 200,
					easing: tween.easeOut
				});
			}
			return; // Don't move while attacking
		}
		// --- Begin: Sniper Tower targeting logic ---
		// Priority: Attack sniper tower if present and in range, else ally, else bunker
		var sniperTowerWall = null;
		var minTowerDist = 99999;
		if (typeof game !== "undefined" && game.walls && game.walls.length > 0) {
			for (var i = 0; i < game.walls.length; i++) {
				var wall = game.walls[i];
				if (wall.type === "sniper" && wall.health > 0) {
					var dxTower = wall.x - self.x;
					var dyTower = wall.y - self.y;
					var distTower = Math.sqrt(dxTower * dxTower + dyTower * dyTower);
					if (distTower < minTowerDist) {
						minTowerDist = distTower;
						sniperTowerWall = wall;
					}
				}
			}
		}
		if (sniperTowerWall) {
			// Move toward sniper tower and attack if in range
			var dxTower = sniperTowerWall.x - self.x;
			var dyTower = sniperTowerWall.y - self.y;
			var distTower = Math.sqrt(dxTower * dxTower + dyTower * dyTower);
			if (distTower < 60) {
				if (!self.isAttackingWall || self.attackTarget !== sniperTowerWall) {
					self.isAttackingWall = true;
					self.attackTarget = sniperTowerWall;
					self.attackAnimationTicks = 0;
				}
				// Do not move if attacking tower
				return;
			} else {
				// Move toward sniper tower if not in attack range
				var angleToTower = Math.atan2(dyTower, dxTower);
				self.x += Math.cos(angleToTower) * self.speed;
				self.y += Math.sin(angleToTower) * self.speed;
				// Add walking animation for following tower
				if (LK.ticks % 10 === 0 && !self.isAttackingWall) {
					tween(self.graphics, {
						rotation: (dxTower > 0 ? 1 : -1) * 0.1
					}, {
						duration: 250,
						easing: tween.easeInOut
					});
				}
				return;
			}
		}
		// --- End: Sniper Tower targeting logic ---
		// Check for ally in range and attack if present and active
		if (typeof ally !== "undefined" && ally && ally.active) {
			var dxAlly = ally.x - self.x;
			var dyAlly = ally.y - self.y;
			var distAlly = Math.sqrt(dxAlly * dxAlly + dyAlly * dyAlly);
			// If ally is present, always follow and attack ally
			if (distAlly < 60) {
				if (!self.isAttackingWall || self.attackTarget !== ally) {
					self.isAttackingWall = true;
					self.attackTarget = ally;
					self.attackAnimationTicks = 0;
				}
				// Do not move if attacking ally
				return;
			} else {
				// Move toward ally if not in attack range
				var angleToAlly = Math.atan2(dyAlly, dxAlly);
				self.x += Math.cos(angleToAlly) * self.speed;
				self.y += Math.sin(angleToAlly) * self.speed;
				// Add walking animation for following ally
				if (LK.ticks % 10 === 0 && !self.isAttackingWall) {
					tween(self.graphics, {
						rotation: (dxAlly > 0 ? 1 : -1) * 0.1
					}, {
						duration: 250,
						easing: tween.easeInOut
					});
				}
				return;
			}
		}
		// Move diagonally
		self.y += self.speed;
		self.x += self.moveDirection * (self.speed * 0.5);
		// Switch direction after a certain distance
		self.moveCounter += self.speed;
		if (self.moveCounter >= self.maxMoveDistance) {
			self.moveDirection *= -1; // Reverse direction
			self.moveCounter = 0;
			self.maxMoveDistance = Math.random() * 30 + 20; // New random distance
		}
		// Make the shadow grow or shrink slightly with height simulation
		// Calculate height simulation based on movement cycle
		var heightSimulation = Math.sin(LK.ticks * 0.05) * 0.1;
		// Update shadow properties to create floating effect
		self.shadow.graphics.alpha = 0.5 - heightSimulation * 0.1; // Vary opacity with more baseline visibility
		self.shadow.graphics.scale.x = self.graphics.width * self.graphics.scale.x * 0.8 / 100 * (1 - heightSimulation); // Vary size
		// Ensure shadow follows enemy even with movement
		self.shadow.x = 0;
		// Add walking animation (always run, not just every 10 ticks, to prevent animation freeze)
		if (!self.isAttackingWall) {
			// Diagonal walk: oscillate rotation left and right as walking (like Ally)
			var walkOsc = Math.sin(LK.ticks * 0.18) * 0.28;
			// Always reset scale to default before tween to prevent cumulative shrinking
			self.graphics.scale.x = self.type === 'fast' || self.type === 'tank' || self.type === 'regular' ? 2.5 : self.graphics.scale.x;
			self.graphics.scale.y = self.type === 'fast' || self.type === 'tank' || self.type === 'regular' ? 2.5 : self.graphics.scale.y;
			tween(self.graphics, {
				rotation: walkOsc
			}, {
				duration: 180,
				easing: tween.easeInOut
			});
			// Add up/down bobbing for walk animation
			var walkCycle = Math.sin(LK.ticks * 0.15) * 6;
			self.graphics.y = walkCycle;
		}
		// Ensure enemy stays within screen bounds
		if (self.x < 50) {
			self.x = 50;
			self.moveDirection = 1;
		} else if (self.x > 2048 - 50) {
			self.x = 2048 - 50;
			self.moveDirection = -1;
		}
		// Check if enemy reached the bunker
		if (self.y > bunkerY - 50) {
			self.attackBunker();
		}
	};
	self.takeDamage = function (amount) {
		self.hp -= amount;
		if (self.hp <= 0) {
			self.die();
		} else {
			LK.effects.flashObject(self, 0xffffff, 200);
		}
	};
	self.die = function () {
		// Fade out shadow when enemy dies
		tween(self.shadow.graphics, {
			alpha: 0
		}, {
			duration: 300
		});
		// Rotate enemy to make it lie on its side (90 degrees in radians)
		tween(self.graphics, {
			rotation: Math.PI / 2,
			alpha: 0.2
		}, {
			duration: 500,
			easing: tween.easeOut
		});
		// After rotation, fade out completely
		LK.setTimeout(function () {
			if (self.graphics) {
				tween(self.graphics, {
					alpha: 0
				}, {
					duration: 800,
					easing: tween.easeIn
				});
			}
		}, 400);
		self.active = false;
		var currentScore = LK.getScore();
		var scoreMultiplier = 1;
		// Increase rewards based on score progression
		if (currentScore > 300) {
			scoreMultiplier = 2.5;
		} else if (currentScore > 200) {
			scoreMultiplier = 2;
		} else if (currentScore > 100) {
			scoreMultiplier = 1.5;
		}
		LK.setScore(currentScore + self.points);
		// Set different currency values based on enemy type with score multiplier
		if (self.type === 'regular') {
			currency += Math.ceil(3 * scoreMultiplier);
		} else if (self.type === 'fast') {
			currency += Math.ceil(4 * scoreMultiplier);
		} else if (self.type === 'tank') {
			currency += Math.ceil(6 * scoreMultiplier);
		} else {
			currency += Math.ceil(self.currency * scoreMultiplier); // Fallback
		}
		updateUI();
	};
	self.startAttackingWall = function (wall) {
		self.isAttackingWall = true;
		self.attackTarget = wall;
		self.attackAnimationTicks = 0;
	};
	self.attackBunker = function () {
		bunkerHealth -= self.damage;
		updateBunkerHealth();
		LK.getSound('bunkerHit').play();
		LK.effects.flashObject(bunker, 0xff0000, 500);
		// Make damage indicator visible when taking damage
		bunker.damageIndicator.alpha = 1;
		self.active = false;
		// Check if bunker is destroyed
		if (bunkerHealth <= 0) {
			gameOver();
		}
	};
	return self;
});
var MuzzleFlash = Container.expand(function () {
	var self = Container.call(this);
	// Create the flash using bullet shape with yellow-white tint
	self.graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFFFF99 // Bright yellow-white color for flash
	});
	// Initially scale small
	self.graphics.scale.set(0.3, 0.3);
	self.graphics.alpha = 0.9;
	// Animation lifetime
	self.duration = 100; // ms
	self.startTime = 0;
	self.active = false;
	// Start the flash effect
	self.flash = function () {
		self.active = true;
		self.startTime = Date.now();
		self.visible = true;
		// Reset and start animation
		self.graphics.scale.set(0.8, 0.8);
		self.graphics.alpha = 1;
	};
	// Update the flash animation
	self.update = function () {
		if (!self.active) return;
		var elapsed = Date.now() - self.startTime;
		var progress = elapsed / self.duration;
		if (progress >= 1) {
			// Animation complete
			self.active = false;
			self.visible = false;
			return;
		}
		// Animate scale and alpha
		self.graphics.scale.set(0.8 * (1 - progress), 0.8 * (1 - progress));
		self.graphics.alpha = 1 - progress;
	};
	// Hide initially
	self.visible = false;
	return self;
});
var PlaceableWall = Container.expand(function (buildingType, buildingHealth) {
	var self = Container.call(this);
	// Create semi-transparent wall based on type
	if (buildingType === 'reinforced') {
		self.graphics = self.attachAsset('reinforcedWall', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.3,
			scaleY: 1.3
		});
	} else if (buildingType === 'sniper') {
		// Create a tower
		self.graphics = self.attachAsset('sniperTower', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.5,
			scaleY: 1.5
		});
		// No need to add extra sniper on top since it's included in the image
	} else {
		// Basic wall
		self.graphics = self.attachAsset('basicWall', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.3,
			scaleY: 1.3
		});
	}
	// Make it semi-transparent
	self.alpha = 0.7;
	// Store building properties for when it's placed
	self.buildingType = buildingType;
	self.buildingHealth = buildingHealth;
	return self;
});
// Security: Melee security guard with walk animation (like Ally/Enemy)
var Security = Container.expand(function () {
	var self = Container.call(this);
	// Use ally soldier image for security for now (replace with unique asset if available)
	self.graphics = self.attachAsset('allySoldier', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.2,
		scaleY: 1.2
	});
	self.graphics.alpha = 1;
	self.maxHealth = 120;
	self.health = self.maxHealth;
	self.damage = 2;
	self.speed = 2.8;
	self.attackRange = 90;
	self.attackCooldown = 700;
	self.walkAnimTick = 0;
	self.lastMoveDirection = 1;
	self.updateWalkAnim = function () {
		// Simulate walk animation (same as Ally/Enemy)
		if (LK.ticks % 10 === 0 && self.active) {
			var dir = 1;
			if (self.targetEnemy) {
				dir = self.targetEnemy.x > self.x ? 1 : -1;
			}
			self.lastMoveDirection = dir;
			tween(self.graphics, {
				rotation: dir * 0.1
			}, {
				duration: 250,
				easing: tween.easeInOut
			});
		}
		var walkCycle = Math.sin(LK.ticks * 0.15) * 6;
		self.graphics.y = walkCycle;
	};
	self.lastAttack = 0;
	self.targetEnemy = null;
	self.followDistance = 100;
	self.active = true;
	// Health bar background
	self.healthBarBg = LK.getAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000,
		scaleX: 1.6,
		scaleY: 0.22
	});
	self.healthBarBg.y = 60;
	self.addChild(self.healthBarBg);
	// Health bar fill
	self.healthBar = LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0.5,
		tint: 0x00FF00,
		scaleX: 1.5,
		scaleY: 0.18
	});
	self.healthBar.y = 60;
	self.healthBar.x = -self.healthBarBg.width / 2;
	self.addChild(self.healthBar);
	// Update health bar
	self.updateHealthBar = function () {
		var percent = Math.max(0, self.health / self.maxHealth);
		self.healthBar.scale.x = 1.5 * percent;
		if (percent < 0.3) {
			self.healthBar.tint = 0xFF0000;
		} else if (percent < 0.6) {
			self.healthBar.tint = 0xFFFF00;
		} else {
			self.healthBar.tint = 0x00FF00;
		}
		self.healthBar.visible = percent < 1;
		self.healthBarBg.visible = percent < 1;
	};
	// Take damage
	self.takeDamage = function (amount) {
		self.health -= amount;
		self.updateHealthBar();
		LK.effects.flashObject(self, 0xff0000, 200);
		if (self.health <= 0) {
			self.active = false;
			tween(self, {
				alpha: 0
			}, {
				duration: 400
			});
			self.visible = false;
		}
	};
	// Security update: follow sniper or attack nearest enemy
	self.update = function () {
		if (!self.active) return;
		self.updateHealthBar();
		self.updateWalkAnim();
		// Find nearest enemy in range
		var nearest = null;
		var minDist = 99999;
		for (var i = 0; i < enemies.length; i++) {
			var e = enemies[i];
			if (!e.active) continue;
			var dx = e.x - self.x;
			var dy = e.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < minDist) {
				minDist = dist;
				nearest = e;
			}
		}
		var now = Date.now();
		if (nearest) {
			self.targetEnemy = nearest;
			var angle = Math.atan2(nearest.y - self.y, nearest.x - self.x);
			if (minDist > self.attackRange * 0.7) {
				self.x += Math.cos(angle) * self.speed;
				self.y += Math.sin(angle) * self.speed;
			}
			if (minDist <= self.attackRange && now - self.lastAttack > self.attackCooldown) {
				self.lastAttack = now;
				nearest.takeDamage(self.damage);
				LK.effects.flashObject(nearest, 0x00FFFF, 120);
			}
		} else {
			self.targetEnemy = null;
			var dx = sniper.x - self.x;
			var dy = sniper.y - self.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist > self.followDistance) {
				var angle = Math.atan2(dy, dx);
				self.x += Math.cos(angle) * self.speed * 0.7;
				self.y += Math.sin(angle) * self.speed * 0.7;
			}
		}
	};
	return self;
});
var Shadow = Container.expand(function () {
	var self = Container.call(this);
	// Create shadow using bullet shape
	self.graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	// Set shadow properties
	self.graphics.alpha = 0.5; // More visible shadow
	// Squish the shadow to appear flat on the ground
	self.graphics.scale.y = 0.3;
	// Ensure the shadow is visible with default size
	self.graphics.scale.x = 0.8;
	// Method to update shadow size based on parent
	self.updateSize = function (parentWidth) {
		// Make shadow slightly smaller than parent
		self.graphics.scale.x = parentWidth * 0.8 / 100;
	};
	return self;
});
var Sniper = Container.expand(function () {
	var self = Container.call(this);
	self.graphics = self.attachAsset('sniper', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8
	});
	// Add rifle that will rotate toward cursor
	self.rifle = self.attachAsset('rifle', {
		anchorX: 0,
		anchorY: 0.5,
		scaleX: 1.7,
		scaleY: 1.7
	});
	// Create references to all weapon graphics but only show the active one
	self.weapons = {
		basic: self.rifle,
		sniper: LK.getAsset('sniper_rifle', {
			anchorX: 0,
			anchorY: 0.5,
			scaleX: 1.2,
			scaleY: 1.2
		}),
		"super": LK.getAsset('sniper_rifle', {
			anchorX: 0,
			anchorY: 0.5,
			scaleX: 1.5,
			scaleY: 1.5,
			tint: 0xFF00FF // Magenta tint for Super Sniper
		})
	};
	// Add other weapons but hide them initially
	self.weapons.sniper.visible = false;
	self.weapons.sniper.x = 10;
	self.addChild(self.weapons.sniper);
	self.weapons["super"].visible = false;
	self.weapons["super"].x = 10;
	self.addChild(self.weapons["super"]);
	// Position rifle to appear like it's being held by the sniper
	self.rifle.x = 10;
	// Initialize weapon positions
	Object.keys(self.weapons).forEach(function (key) {
		// Standard positioning
		self.weapons[key].x = 10;
		self.weapons[key].y = 0;
		if (key === 'basic') {
			self.weapons[key].scale.x = 1.7;
			self.weapons[key].scale.y = 1.7;
		} else if (key === 'sniper') {
			self.weapons[key].scale.x = 1.2;
			self.weapons[key].scale.y = 1.2;
		} else {
			self.weapons[key].scale.x = 1.7;
			self.weapons[key].scale.y = 1.7;
		}
	});
	// Create muzzle flash effects for each weapon
	self.muzzleFlashes = {};
	Object.keys(self.weapons).forEach(function (key) {
		var flash = new MuzzleFlash();
		self.weapons[key].addChild(flash);
		// Position at the end of each weapon
		flash.x = self.weapons[key].width - 10;
		flash.y = 0;
		if (key === 'super') {
			flash.graphics.tint = 0xFF00FF; // Magenta flash for super sniper
		}
		self.muzzleFlashes[key] = flash;
	});
	self.fireRate = 1000; // ms between shots
	self.lastShot = 0;
	self.bulletDamage = 1;
	self.bulletSpeed = 15; // Default bullet speed
	self.currentWeapon = 'basic'; // Track current weapon type
	// Method to update rifle rotation based on cursor position
	self.updateAim = function (targetX, targetY) {
		// Calculate angle to target
		var angle = Math.atan2(targetY - self.y, targetX - self.x);
		// Determine if target is on left or right side of the screen
		var isTargetOnLeftSide = targetX < 2048 / 2;
		// Update sniper graphics based on which side target is on
		if (isTargetOnLeftSide) {
			// Target is on left side - character faces left
			self.graphics.scale.x = -1; // Flip character horizontally
			// Adjust weapon positions for left-facing stance
			Object.keys(self.weapons).forEach(function (key) {
				self.weapons[key].x = -10; // Offset for left side
				self.weapons[key].scale.x = -1; // Flip weapon horizontally
			});
		} else {
			// Target is on right side - character faces right
			self.graphics.scale.x = 1; // Normal orientation
			// Adjust weapon positions for right-facing stance
			Object.keys(self.weapons).forEach(function (key) {
				self.weapons[key].x = 10; // Normal position on right side
				self.weapons[key].scale.x = 1; // Normal weapon orientation
			});
		}
		// Set all weapons rotation to aim at target, properly adjusted for direction
		if (isTargetOnLeftSide) {
			// When facing left, we need to adjust the angle
			self.weapons.basic.rotation = angle + Math.PI;
			self.weapons.sniper.rotation = angle + Math.PI;
			self.weapons["super"].rotation = angle + Math.PI;
		} else {
			self.weapons.basic.rotation = angle;
			self.weapons.sniper.rotation = angle;
			self.weapons["super"].rotation = angle;
		}
		return angle;
	};
	self.canShoot = function () {
		var now = Date.now();
		if (now - self.lastShot >= self.fireRate) {
			self.lastShot = now;
			return true;
		}
		return false;
	};
	self.switchWeapon = function (weaponIndex) {
		// Hide all weapons first
		self.weapons.basic.visible = false;
		self.weapons.sniper.visible = false;
		self.weapons["super"].visible = false;
		// Show selected weapon based on index
		switch (weaponIndex) {
			case 0:
				self.weapons.basic.visible = true;
				self.currentWeapon = 'basic';
				break;
			case 1:
				self.weapons.sniper.visible = true;
				self.currentWeapon = 'sniper';
				break;
			case 2:
				self.weapons["super"].visible = true;
				self.currentWeapon = 'super';
				break;
			default:
				self.weapons.basic.visible = true;
				self.currentWeapon = 'basic';
		}
		// Reset magazine if switching weapon
		var mag = magazines[self.currentWeapon];
		if (mag && mag.current > mag.max) mag.current = mag.max;
		updateAmmoUI();
	};
	self.shoot = function (targetX, targetY) {
		// Magazine and reload logic
		var weapon = self.currentWeapon;
		var mag = magazines[weapon];
		if (mag.reloading) return null;
		if (mag.current <= 0) {
			// Start reload
			mag.reloading = true;
			updateAmmoUI();
			// Animate reload: move weapon down and up, and show "reloading..." in UI
			tween(self.weapons[weapon], {
				y: 60,
				alpha: 0.5
			}, {
				duration: Math.floor(mag.reloadTime * 0.4),
				easing: tween.easeIn,
				onFinish: function onFinish() {
					tween(self.weapons[weapon], {
						y: 0,
						alpha: 1
					}, {
						duration: Math.floor(mag.reloadTime * 0.6),
						easing: tween.easeOut
					});
				}
			});
			LK.setTimeout(function () {
				mag.current = mag.max;
				mag.reloading = false;
				updateAmmoUI();
			}, mag.reloadTime);
			return null;
		}
		if (!self.canShoot()) return null;
		mag.current--;
		updateAmmoUI();
		// Update rifle aim
		var angle = self.updateAim(targetX, targetY);
		var bullet = new Bullet();
		// Determine if target is on left or right side of the screen
		var isTargetOnLeftSide = targetX < 2048 / 2;
		var activeWeapon = self.weapons[self.currentWeapon];
		var rifleLength = activeWeapon.width;
		// Calculate bullet spawn position at the muzzle, always at the tip of the rifle in world space
		// Get the local muzzle position (rifle tip) in weapon's local space
		var muzzleLocalX = rifleLength;
		var muzzleLocalY = 0;
		// Transform muzzle position to world space
		// 1. Get weapon's rotation and scale.x (for left/right flip)
		var weaponRotation = activeWeapon.rotation;
		var weaponScaleX = activeWeapon.scale.x;
		// 2. Calculate rotated and flipped muzzle position
		var cosR = Math.cos(weaponRotation);
		var sinR = Math.sin(weaponRotation);
		var muzzleWorldX = self.x + (activeWeapon.x + muzzleLocalX * weaponScaleX) * cosR - muzzleLocalY * sinR;
		var muzzleWorldY = self.y + (activeWeapon.y + muzzleLocalX * weaponScaleX) * sinR + muzzleLocalY * cosR;
		// Place bullet at the muzzle tip
		bullet.x = muzzleWorldX;
		bullet.y = muzzleWorldY;
		// Set bullet direction - always use the original angle for bullet direction
		bullet.speedX = Math.cos(angle) * (self.currentWeapon === "super" ? self.bulletSpeed : bullet.speed);
		bullet.speedY = Math.sin(angle) * (self.currentWeapon === "super" ? self.bulletSpeed : bullet.speed);
		bullet.damage = self.bulletDamage;
		bullet.speed = self.bulletSpeed; // Set bullet speed from sniper
		// Customize bullet appearance based on weapon type
		if (self.currentWeapon === 'sniper') {
			bullet.graphics.tint = 0x33CCFF; // Blue tint for sniper bullets
			bullet.graphics.scale.set(0.8, 1.5); // Thinner, longer bullets
		} else if (self.currentWeapon === 'super') {
			bullet.graphics.tint = 0xFF00FF; // Magenta tint for super sniper bullets
			bullet.graphics.scale.set(1.2, 2.2); // Even longer, more powerful look
			bullet.damage = self.bulletDamage; // Ensure correct damage
			bullet.speed = self.bulletSpeed; // Ensure correct speed
		}
		// Trigger muzzle flash for current weapon
		var muzzleFlash = self.muzzleFlashes[self.currentWeapon];
		if (muzzleFlash) {
			muzzleFlash.flash();
		}
		// Add weapon recoil effect based on weapon type
		var recoilDistance = 10; // Default recoil for rifle
		var recoilDuration = 100; // Default recoil recovery time
		var originX = activeWeapon.x;
		// Set different recoil parameters based on weapon type
		if (self.currentWeapon === 'sniper') {
			recoilDistance = 20; // Stronger recoil for sniper
			recoilDuration = 150;
		} else if (self.currentWeapon === 'super') {
			recoilDistance = 35; // Even stronger recoil for super sniper
			recoilDuration = 200;
		}
		// Calculate recoil direction (opposite to shot direction)
		// For recoil, we need to consider which direction the weapon is facing
		var recoilDirection = isTargetOnLeftSide ? 1 : -1; // Reverse for left-facing
		var bulletAngle = angle; // Use the same angle as bullet direction
		var recoilX = recoilDirection * Math.cos(bulletAngle) * recoilDistance;
		var recoilY = -Math.sin(bulletAngle) * recoilDistance;
		// Apply recoil to the active weapon
		tween(activeWeapon, {
			x: originX + recoilX,
			y: recoilY
		}, {
			duration: 50,
			// Quick recoil
			easing: tween.easeOut,
			onFinish: function onFinish() {
				// Recover from recoil
				tween(activeWeapon, {
					x: originX,
					y: 0
				}, {
					duration: recoilDuration,
					easing: tween.easeInOut
				});
			}
		});
		LK.getSound('shoot').play();
		return bullet;
	};
	return self;
});
var Tree = Container.expand(function () {
	var self = Container.call(this);
	// Random tree appearance with variation
	var type = Math.floor(Math.random() * 3);
	var size = Math.random() * 0.7 + 1.2; // Size between 1.2 and 1.9
	var rotation = Math.random() * 0.2 - 0.1; // Slight rotation
	// Create the tree trunk using bullet shape with brown tint
	var treeTrunk = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x8B4513,
		// Saddle brown color
		scaleX: size * 0.3,
		scaleY: size * 0.8
	});
	// Create the tree crown using bullet shape with green tint
	var treeCrown = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x228B22,
		// Forest green color
		scaleX: size * 1.2,
		scaleY: size * 1.0
	});
	// Position crown on top of trunk
	treeCrown.y = -treeTrunk.height * 0.5;
	// Apply random rotation
	self.rotation = rotation;
	// Add some details to make trees look different from each other
	if (type === 0) {
		// First type - taller tree with darker green
		treeCrown.scale.y *= 1.4;
		treeCrown.tint = 0x006400; // Dark green
	} else if (type === 1) {
		// Second type - wider tree with lighter green
		treeCrown.scale.x *= 1.3;
		treeCrown.tint = 0x32CD32; // Lime green
	} else {
		// Third type - autumn tree with different color
		treeCrown.tint = 0xFF8C00; // Dark orange
	}
	return self;
});
var Wall = Container.expand(function (type, health) {
	var self = Container.call(this);
	// Set properties based on wall type
	self.type = type || 'basic';
	self.maxHealth = health || 100;
	self.health = self.maxHealth;
	// Create wall graphic based on type
	if (self.type === 'reinforced') {
		self.graphics = self.attachAsset('reinforcedWall', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.3,
			scaleY: 1.3
		});
	} else if (self.type === 'sniper') {
		// Create a tower
		self.graphics = self.attachAsset('sniperTower', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.5,
			scaleY: 1.5
		});
		// Sniper tower stats
		self.maxHealth = 300;
		self.health = self.maxHealth;
		self.towerDamage = 2;
		self.towerRange = 700;
		self.towerFireRate = 1200; // ms between shots
		self.towerLastShot = 0;
		self.towerTarget = null;
		self.towerBulletSpeed = 18;
		self.towerBullet = function (target) {
			var bullet = new Bullet();
			bullet.x = self.x;
			bullet.y = self.y - self.graphics.height / 2;
			var dx = target.x - bullet.x;
			var dy = target.y - bullet.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			// Prevent division by zero and ensure bullet always moves
			if (dist === 0) dist = 0.0001;
			bullet.speedX = dx / dist * self.towerBulletSpeed;
			bullet.speedY = dy / dist * self.towerBulletSpeed;
			bullet.damage = self.towerDamage;
			bullet.graphics.tint = 0x33CCFF;
			bullet.graphics.scale.set(0.7, 1.3);
			return bullet;
		};
		// No need to add extra sniper on top since it's included in the image
	} else {
		// Basic wall
		self.graphics = self.attachAsset('basicWall', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 1.3,
			scaleY: 1.3
		});
	}
	// Add health bar
	self.healthBar = new Container();
	self.addChild(self.healthBar);
	// Health bar background
	self.healthBarBg = LK.getAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000,
		scaleX: 3,
		scaleY: 0.3
	});
	self.healthBarBg.y = -40;
	self.healthBar.addChild(self.healthBarBg);
	// Health bar fill
	self.healthBarFill = LK.getAsset('bullet', {
		anchorX: 0,
		anchorY: 0.5,
		tint: 0x00FF00,
		scaleX: 3,
		scaleY: 0.2
	});
	self.healthBarFill.y = -40;
	self.healthBarFill.x = -self.healthBarBg.width / 2;
	self.healthBar.addChild(self.healthBarFill);
	// Hide health bar initially
	self.healthBar.visible = false;
	self.update = function () {
		// Show health bar if damaged, and always show for sniper tower if not full health
		if (self.health < self.maxHealth || self.type === 'sniper' && self.health < self.maxHealth) {
			self.healthBar.visible = true;
			// Update health bar fill
			var healthPercent = self.health / self.maxHealth;
			self.healthBarFill.scale.x = 3 * healthPercent;
			// Change color based on health
			if (healthPercent < 0.3) {
				self.healthBarFill.tint = 0xFF0000; // Red
			} else if (healthPercent < 0.6) {
				self.healthBarFill.tint = 0xFFFF00; // Yellow
			} else {
				self.healthBarFill.tint = 0x00FF00; // Green
			}
		} else {
			self.healthBar.visible = false;
		}
		// Sniper tower AI: shoot at nearest enemy in range
		if (self.type === 'sniper' && self.health > 0) {
			var now = Date.now();
			// Find nearest enemy in range
			var nearest = null;
			var minDist = 99999;
			for (var i = 0; i < enemies.length; i++) {
				var e = enemies[i];
				if (!e.active) continue;
				var dx = e.x - self.x;
				var dy = e.y - self.y;
				var dist = Math.sqrt(dx * dx + dy * dy);
				if (dist < minDist && dist < self.towerRange) {
					minDist = dist;
					nearest = e;
				}
			}
			if (nearest && now - self.towerLastShot > self.towerFireRate) {
				self.towerLastShot = now;
				var bullet = self.towerBullet(nearest);
				if (bullet) {
					bullets.push(bullet);
					if (game && typeof game.addChild === "function") game.addChild(bullet);
				}
			}
		}
	};
	self.takeDamage = function (amount) {
		self.health -= amount;
		if (self.health <= 0) {
			self.destroy();
			return true; // Wall destroyed
		}
		return false; // Wall still standing
	};
	return self;
});
var WaveCountdown = Container.expand(function () {
	var self = Container.call(this);
	self.countdownTime = 60; // 60 seconds default
	self.active = false;
	// Create countdown text
	self.countdownText = new Text2(self.countdownTime, {
		size: 150,
		fill: 0xFFFFFF
	});
	self.countdownText.anchor.set(0.5, 0.5);
	self.addChild(self.countdownText);
	// Create skip button
	self.skipButton = new Text2("SKIP", {
		size: 80,
		fill: 0xFFFF00
	});
	self.skipButton.anchor.set(0.5, 0.5);
	self.skipButton.y = 100;
	self.addChild(self.skipButton);
	// Skip button background for better visibility
	var skipButtonBg = LK.getAsset('bullet', {
		width: 200,
		height: 100,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x333333
	});
	skipButtonBg.alpha = 0.8;
	skipButtonBg.y = 100;
	self.addChild(skipButtonBg);
	// Custom swap implementation since swapChildren is not available
	var parent = self.skipButton.parent;
	var skipButtonIndex = parent.children.indexOf(skipButtonBg);
	var buttonIndex = parent.children.indexOf(self.skipButton);
	// Manual reordering of children to create swap effect
	if (skipButtonIndex !== -1 && buttonIndex !== -1) {
		// Remove both from parent
		parent.removeChild(skipButtonBg);
		parent.removeChild(self.skipButton);
		// Add them back in reverse order
		parent.addChild(self.skipButton);
		parent.addChild(skipButtonBg);
	}
	// Timer for countdown
	self.timer = null;
	// Start countdown
	self.startCountdown = function (onComplete) {
		self.active = true;
		self.visible = true;
		self.countdownTime = 60;
		self.countdownText.setText(self.countdownTime);
		self.onComplete = onComplete;
		// Update countdown every second
		self.timer = LK.setInterval(function () {
			self.countdownTime--;
			self.countdownText.setText(self.countdownTime);
			if (self.countdownTime <= 0) {
				self.stopCountdown();
				if (self.onComplete) self.onComplete();
			}
		}, 1000);
	};
	// Stop countdown
	self.stopCountdown = function () {
		if (self.timer) {
			LK.clearInterval(self.timer);
			self.timer = null;
		}
		self.active = false;
		self.visible = false;
	};
	// Skip button event handler
	self.skipButton.down = function (x, y, obj) {
		if (self.active) {
			self.stopCountdown();
			if (self.onComplete) self.onComplete();
		}
	};
	return self;
});
var WeaponShop = Container.expand(function () {
	var self = Container.call(this);
	self.isOpen = false;
	self.weapons = [{
		name: "Basic Rifle",
		price: 0,
		damage: 1,
		speed: 15,
		owned: true
	}, {
		name: "Sniper Rifle",
		price: 50,
		damage: 3,
		speed: 30,
		owned: false
	}, {
		name: "Super Sniper",
		price: 150,
		damage: 7,
		speed: 40,
		owned: false
	}];
	// Shop button
	self.shopButton = new Text2("WEAPONS", {
		size: 80,
		fill: 0xFFFF00
	});
	self.shopButton.anchor.set(0.5, 0);
	// Add background to make button more visible
	var buttonBg = LK.getAsset('bullet', {
		width: 300,
		height: 100,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x333333
	});
	buttonBg.alpha = 0.8;
	buttonBg.y = self.shopButton.height / 2;
	self.addChild(buttonBg);
	self.addChild(self.shopButton);
	// Shop panel (hidden by default)
	self.panel = new Container();
	self.panel.visible = false;
	self.addChild(self.panel);
	// Create weapon options
	self.weaponItems = [];
	for (var i = 0; i < self.weapons.length; i++) {
		var weapon = self.weapons[i];
		var item = new Container();
		var bg = LK.getAsset('bullet', {
			width: 400,
			height: 150,
			anchorX: 0.5,
			anchorY: 0.5,
			tint: 0x333333
		});
		bg.alpha = 0.8;
		item.addChild(bg);
		var title = new Text2(weapon.name, {
			size: 40,
			fill: 0xFFFFFF
		});
		title.anchor.set(0.5, 0);
		title.y = -50;
		item.addChild(title);
		var info = new Text2("Damage: " + weapon.damage + " | Speed: " + weapon.speed, {
			size: 30,
			fill: 0xFFFFFF
		});
		info.anchor.set(0.5, 0);
		info.y = 0;
		item.addChild(info);
		var priceText = new Text2(weapon.owned ? "OWNED" : "$" + weapon.price, {
			size: 35,
			fill: weapon.owned ? 0x00FF00 : 0xFFFF00
		});
		priceText.anchor.set(0.5, 0);
		priceText.y = 40;
		item.addChild(priceText);
		item.y = i * 200;
		item.weaponIndex = i;
		self.weaponItems.push(item);
		self.panel.addChild(item);
	}
	// Position panel
	self.panel.y = 250;
	// Handle shop button press
	self.shopButton.down = function (x, y, obj) {
		self.toggleShop();
	};
	// Toggle shop visibility
	self.toggleShop = function () {
		self.isOpen = !self.isOpen;
		self.panel.visible = self.isOpen;
	};
	// Handle weapon selection
	self.selectWeapon = function (index) {
		var weapon = self.weapons[index];
		if (weapon.owned) {
			// Equip weapon
			sniper.bulletDamage = weapon.damage;
			sniper.bulletSpeed = weapon.speed;
			sniper.switchWeapon(index); // Switch to selected weapon appearance
			// Visual feedback for equipped weapon
			for (var i = 0; i < self.weaponItems.length; i++) {
				var priceText = self.weaponItems[i].children[3];
				if (i === index) {
					priceText.setText("EQUIPPED", {
						fill: i === 2 ? 0xFF00FF : 0x00FFFF // Magenta for super sniper, cyan for others
					});
				} else if (self.weapons[i].owned) {
					priceText.setText("OWNED", {
						fill: i === 2 ? 0xFF00FF : 0x00FF00 // Magenta for super sniper, green for others
					});
				}
			}
			LK.getSound('upgrade').play();
			return true;
		} else if (currency >= weapon.price) {
			// Purchase weapon
			currency -= weapon.price;
			weapon.owned = true;
			// Update UI
			var priceText = self.weaponItems[index].children[3];
			priceText.setText("EQUIPPED", {
				fill: index === 2 ? 0xFF00FF : 0x00FFFF // Magenta for super sniper, cyan for others
			});
			// Reset other weapon texts to "OWNED"
			for (var i = 0; i < self.weaponItems.length; i++) {
				if (i !== index && self.weapons[i].owned) {
					self.weaponItems[i].children[3].setText("OWNED", {
						fill: i === 2 ? 0xFF00FF : 0x00FF00 // Magenta for super sniper, green for others
					});
				}
			}
			// Equip weapon
			sniper.bulletDamage = weapon.damage;
			sniper.bulletSpeed = weapon.speed;
			sniper.switchWeapon(index); // Switch to selected weapon appearance
			LK.getSound('upgrade').play();
			updateUI();
			return true;
		} else {
			// Not enough currency
			LK.effects.flashScreen(0xFF0000, 300);
			return false;
		}
	};
	// Check if an item was clicked
	self.checkItemClick = function (x, y) {
		if (!self.isOpen) return false;
		var pos = self.toLocal({
			x: x,
			y: y
		});
		for (var i = 0; i < self.weaponItems.length; i++) {
			var item = self.weaponItems[i];
			// Use item's actual bounds for hit detection
			var bounds = item.children[0].getBounds(); // children[0] is the background
			// Convert bounds to local coordinates relative to the panel
			var itemLeft = item.x + bounds.x - bounds.width * item.children[0].anchorX;
			var itemRight = itemLeft + bounds.width;
			var itemTop = item.y + bounds.y - bounds.height * item.children[0].anchorY;
			var itemBottom = itemTop + bounds.height;
			if (pos.x >= itemLeft && pos.x <= itemRight && pos.y >= itemTop && pos.y <= itemBottom) {
				return self.selectWeapon(item.weaponIndex);
			}
		}
		return false;
	};
	// Add down event handlers to each weapon item
	for (var i = 0; i < self.weaponItems.length; i++) {
		var item = self.weaponItems[i];
		item.interactive = true;
		item.index = i; // Store the index
		// Using custom event handler for each item
		(function (index) {
			item.down = function (x, y, obj) {
				self.selectWeapon(index);
			};
		})(i);
	}
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	// No title, no description
	// Always backgroundColor is black
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Create background
var background = game.attachAsset('background', {
	width: 2048,
	height: 2732,
	anchorX: 0,
	anchorY: 0,
	tint: 0xC2B280 // Apply dry land tint to the background
});
// Game variables
var bunkerHealth = 100;
var maxBunkerHealth = 100;
var bunkerY = 2732 - 100; // Position near bottom of screen
var currency = 500;
var difficulty = 1;
var wave = 1;
var enemySpawnRate = 3000; // ms between enemy spawns
var lastEnemySpawn = 0;
var gameActive = true;
var waveInProgress = false;
var enemyIncreasePerWave = 0.25; // 25% more enemies per wave
var enemiesPerWave = 25; // Starting with 25 enemies
var enemiesSpawned = 0; // Track enemies spawned in current wave
var enemiesRequired = 10; // Initial enemies required for first wave
// Magazine system for each weapon type
var magazines = {
	basic: {
		max: 15,
		current: 15,
		reloading: false,
		reloadTime: 1200
	},
	sniper: {
		max: 10,
		current: 10,
		reloading: false,
		reloadTime: 1800
	},
	"super": {
		max: 5,
		current: 5,
		reloading: false,
		reloadTime: 2500
	}
};
// UI for ammo display
var ammoTxt = new Text2('Ammo: 5/5', {
	size: 50,
	fill: 0xFFFF00
});
ammoTxt.anchor.set(1, 0);
ammoTxt.x = 2048 - 80;
ammoTxt.y = 60;
LK.gui.top.addChild(ammoTxt);
// Helper to update ammo UI
function updateAmmoUI() {
	var weapon = sniper.currentWeapon;
	var mag = magazines[weapon];
	if (mag.reloading) {
		ammoTxt.setText('Reloading...');
	} else {
		ammoTxt.setText('Ammo: ' + mag.current + '/' + mag.max);
	}
}
// Upgrade costs and values
var upgrades = {
	fireRate: {
		level: 1,
		cost: 10,
		value: 1000,
		// ms between shots
		increment: -100 // decrease time between shots
	},
	bulletDamage: {
		level: 1,
		cost: 15,
		value: 1,
		increment: 1 // increase damage
	}
};
// Arrays for tracking game objects
var bullets = [];
var enemies = [];
var walls = [];
// Ally instance (semi-transparent melee ally)
var ally = null;
// Create bunker
var bunker = new Bunker();
bunker.x = 2048 / 2;
bunker.y = bunkerY;
game.addChild(bunker);
// Create sniper
var sniper = new Sniper();
sniper.x = 2048 / 2;
sniper.y = bunkerY - 50;
game.addChild(sniper);
// Create weapon shop
var weaponShop = new WeaponShop();
weaponShop.x = 350; // Moved more to the right for better visibility
weaponShop.y = 1800; // Position higher on the screen for better visibility
game.addChild(weaponShop); // Add to game instead of GUI for better positioning
// Create building shop
var buildingShop = new BuildingShop();
buildingShop.x = 400; // Moved further right to improve visibility and hit detection
buildingShop.y = 600; // Repositioned lower on the screen for better accessibility
game.addChild(buildingShop);
// Create wave countdown timer
var waveCountdown = new WaveCountdown();
waveCountdown.x = 2048 / 2; // Center horizontally
waveCountdown.y = 2732 / 2; // Center vertically
waveCountdown.visible = false; // Hide initially
game.addChild(waveCountdown);
// UI Elements
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 70,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.y = 50;
LK.gui.top.addChild(scoreTxt);
// Ally purchase button (bottom left corner, visible)
var allyBtnBg = LK.getAsset('bullet', {
	width: 260,
	height: 110,
	anchorX: 0.5,
	anchorY: 0.5,
	tint: 0x333333
});
allyBtnBg.alpha = 0.8;
var allyBtn = new Text2("ALLY\n$100", {
	size: 55,
	fill: 0x00FFFF
});
allyBtn.anchor.set(0.5, 0.5);
var allyBtnContainer = new Container();
allyBtnContainer.addChild(allyBtnBg);
allyBtnContainer.addChild(allyBtn);
allyBtnContainer.x = 140;
allyBtnContainer.y = 2732 - 140;
allyBtnContainer.interactive = true;
allyBtnContainer.visible = true;
game.addChild(allyBtnContainer);
// Ally button event
allyBtnContainer.down = function (x, y, obj) {
	if (currency >= 100 && (!ally || !ally.active)) {
		currency -= 100;
		updateUI();
		if (ally && !ally.active) {
			game.removeChild(ally);
		}
		ally = new Ally();
		ally.x = sniper.x + 80;
		ally.y = sniper.y;
		game.addChild(ally);
		// --- Fix: Reset all enemy walk animation scale to default when ally is created ---
		for (var i = 0; i < enemies.length; i++) {
			var e = enemies[i];
			if (e && e.graphics && (e.type === 'fast' || e.type === 'tank' || e.type === 'regular')) {
				e.graphics.scale.x = 2.5;
				e.graphics.scale.y = 2.5;
			}
		}
		LK.effects.flashObject(ally, 0x00FFFF, 400);
	} else if (currency < 100) {
		LK.effects.flashObject(allyBtnContainer, 0xFF0000, 200);
	}
};
// Wave display
var waveTxt = new Text2('Wave: 1', {
	size: 50,
	fill: 0xFFFFFF
});
waveTxt.anchor.set(1, 0);
LK.gui.topLeft.addChild(waveTxt);
waveTxt.x = 150; // Move away from the top left corner
// Health display
var healthTxt = new Text2('Bunker: 100%', {
	size: 50,
	fill: 0xFFFFFF
});
healthTxt.anchor.set(0.5, 0);
healthTxt.y = 130;
LK.gui.top.addChild(healthTxt);
// Currency display
var currencyTxt = new Text2('$: 0', {
	size: 50,
	fill: 0x00FF00
});
currencyTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(currencyTxt);
currencyTxt.x = 150; // Move away from top left corner
currencyTxt.y = 60; // Position below wave display
// Upgrade buttons removed as requested
// Update UI elements
function updateUI() {
	scoreTxt.setText('Score: ' + LK.getScore());
	currencyTxt.setText('$: ' + currency);
	waveTxt.setText('Wave: ' + wave);
	updateUpgradeButtons();
}
function updateBunkerHealth() {
	var healthPercentage = Math.max(0, Math.min(100, Math.round(bunkerHealth / maxBunkerHealth * 100)));
	healthTxt.setText('Bunker: ' + healthPercentage + '%');
	bunker.showDamage(bunkerHealth / maxBunkerHealth);
	// Only make damage indicator visible and shake when actually taking damage
	// Don't show it during initialization
	// Only proceed with damage indication animations if bunker is actually taking damage
	if (bunkerHealth < maxBunkerHealth) {
		// Make damage indicator visible and shake when damage is taken
		bunker.damageIndicator.alpha = 1;
		// Shake effect
		tween(bunker.damageIndicator, {
			x: bunker.damageIndicator.originalX + (Math.random() * 10 - 5),
			y: bunker.damageIndicator.originalY + (Math.random() * 10 - 5)
		}, {
			duration: 50,
			repeat: 5,
			yoyo: true,
			onFinish: function onFinish() {
				// Hide damage indicator after shake completes (1 second)
				LK.setTimeout(function () {
					if (gameActive) {
						// Fade out damage indicator
						tween(bunker.damageIndicator, {
							alpha: 0
						}, {
							duration: 300
						});
					}
				}, 1000);
			}
		});
	}
	// Create a visual indicator effect when health is low
	if (bunkerHealth / maxBunkerHealth < 0.5) {
		// Add continuous damage indicator update for low health
		LK.setTimeout(function () {
			if (gameActive) bunker.showDamage(bunkerHealth / maxBunkerHealth);
		}, 100);
	}
}
function updateUpgradeButtons() {
	// Upgrade buttons removed as requested
}
// Game mechanics functions
function spawnEnemy() {
	var now = Date.now();
	if (!waveInProgress || now - lastEnemySpawn < enemySpawnRate) return;
	// Check if we've already spawned enough enemies for this wave
	if (enemiesSpawned >= enemiesRequired) return;
	lastEnemySpawn = now;
	// Calculate number of enemies to spawn based on score
	var currentScore = LK.getScore();
	var enemiesToSpawnAtOnce = 1; // Default spawn one enemy at a time
	// Increase enemies spawned at once based on score thresholds
	if (currentScore >= 500) {
		enemiesToSpawnAtOnce = 5; // Spawn 5 enemies at once at high scores
	} else if (currentScore >= 300) {
		enemiesToSpawnAtOnce = 4; // Spawn 4 enemies at once
	} else if (currentScore >= 200) {
		enemiesToSpawnAtOnce = 3; // Spawn 3 enemies at once
	} else if (currentScore >= 100) {
		enemiesToSpawnAtOnce = 2; // Spawn 2 enemies at once
	}
	// Make sure we don't spawn more enemies than required for this wave
	enemiesToSpawnAtOnce = Math.min(enemiesToSpawnAtOnce, enemiesRequired - enemiesSpawned);
	// Spawn multiple enemies at once
	for (var i = 0; i < enemiesToSpawnAtOnce; i++) {
		// Determine enemy type based on score and wave progression
		var enemyType = 'regular';
		var random = Math.random();
		// More advanced enemies appear based on score thresholds
		if (currentScore >= 350 && random < 0.25) {
			enemyType = 'desertBandit';
		} else if (currentScore >= 300 && random < 0.3) {
			enemyType = 'tank';
		} else if (currentScore >= 150 && random < 0.25) {
			enemyType = 'tank';
		} else if (currentScore >= 100 && random < 0.35) {
			enemyType = 'fast';
		} else if (currentScore >= 50 && random < 0.25) {
			enemyType = 'fast';
		}
		var enemy;
		if (enemyType === 'desertBandit') {
			enemy = new DesertBandit();
		} else {
			enemy = new Enemy(enemyType);
		}
		// Distribute enemies across the width of the screen
		if (enemiesToSpawnAtOnce > 1) {
			// Distribute evenly but with some randomness
			var segment = 2048 / enemiesToSpawnAtOnce;
			enemy.x = i * segment + Math.random() * (segment - 100) + 50;
		} else {
			enemy.x = Math.random() * (2048 - 100) + 50; // Random x position
		}
		enemy.y = -50; // Start above the screen
		enemies.push(enemy);
		game.addChild(enemy);
		// Increment enemies spawned counter
		enemiesSpawned++;
	}
}
function checkCollisions() {
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (!bullet.active) {
			game.removeChild(bullet);
			bullets.splice(i, 1);
			continue;
		}
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (!enemy.active) {
				game.removeChild(enemy);
				enemies.splice(j, 1);
				continue;
			}
			if (bullet.active && enemy.active && bullet.intersects(enemy)) {
				enemy.takeDamage(bullet.damage);
				bullet.hit();
				break;
			}
		}
	}
}
function upgradeFireRate() {
	if (currency >= upgrades.fireRate.cost) {
		currency -= upgrades.fireRate.cost;
		upgrades.fireRate.level++;
		upgrades.fireRate.value += upgrades.fireRate.increment;
		// Ensure fire rate doesn't go below minimum
		upgrades.fireRate.value = Math.max(200, upgrades.fireRate.value);
		sniper.fireRate = upgrades.fireRate.value;
		// Increase cost for next upgrade
		upgrades.fireRate.cost = Math.floor(upgrades.fireRate.cost * 1.5);
		LK.getSound('upgrade').play();
		updateUI();
	}
}
function upgradeBulletDamage() {
	if (currency >= upgrades.bulletDamage.cost) {
		currency -= upgrades.bulletDamage.cost;
		upgrades.bulletDamage.level++;
		upgrades.bulletDamage.value += upgrades.bulletDamage.increment;
		sniper.bulletDamage = upgrades.bulletDamage.value;
		// Increase cost for next upgrade
		upgrades.bulletDamage.cost = Math.floor(upgrades.bulletDamage.cost * 1.5);
		LK.getSound('upgrade').play();
		updateUI();
	}
}
function increaseDifficulty() {
	// Check if all enemies for this wave are spawned and eliminated
	if (waveInProgress && enemiesSpawned >= enemiesRequired && enemies.length === 0) {
		// All enemies in current wave defeated, prepare for next wave
		wave++;
		// Calculate new enemies required for next wave (increase by 25%)
		enemiesRequired = Math.ceil(enemiesPerWave * Math.pow(1 + 0.25, wave - 1));
		// Reset enemies spawned counter
		enemiesSpawned = 0;
		// Decrease spawn rate with each wave (faster spawns) based on score and wave
		var currentScore = LK.getScore();
		// More aggressive spawn rate reduction based on score
		var scoreBasedReduction = Math.min(2000, Math.floor(currentScore / 8) * 25);
		// Use an exponential reduction for higher scores to make spawns much faster
		if (currentScore > 300) {
			scoreBasedReduction += Math.min(1000, Math.pow(currentScore - 300, 1.2));
		}
		// Set a lower minimum spawn rate for higher scores
		var minSpawnRate = currentScore > 400 ? 100 : currentScore > 200 ? 200 : 300;
		enemySpawnRate = Math.max(minSpawnRate, 3000 - wave * 200 - scoreBasedReduction);
		// Pause wave progression and show countdown
		waveInProgress = false;
		// Start countdown for next wave
		waveCountdown.startCountdown(function () {
			// When countdown completes, start the new wave
			startNewWave();
		});
	}
}
function startNewWave() {
	// Clear all existing enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		game.removeChild(enemies[i]);
	}
	enemies = [];
	// Reset enemies spawned counter
	enemiesSpawned = 0;
	// Update UI to show new wave and enemy count
	waveTxt.setText('Wave: ' + wave + ' (' + enemiesRequired + ' enemies)');
	// Start spawning enemies again
	waveInProgress = true;
	// Flash screen to indicate new wave
	LK.effects.flashScreen(0x00FF00, 500);
	// Adjust difficulty based on score
	var currentScore = LK.getScore();
	if (currentScore > 300) {
		difficulty = 5;
	} else if (currentScore > 200) {
		difficulty = 4;
	} else if (currentScore > 100) {
		difficulty = 3;
	} else if (currentScore > 50) {
		difficulty = 2;
	} else {
		difficulty = 1;
	}
}
function gameOver() {
	gameActive = false;
	// Save high score
	if (LK.getScore() > storage.highScore) {
		storage.highScore = LK.getScore();
	}
	// Save currency for next game
	storage.currency = currency;
	// Show game over screen
	LK.showGameOver();
}
// Event handlers
game.move = function (x, y, obj) {
	if (gameActive) {
		// If placing a wall, move it with cursor
		if (game.isPlacing && game.placeableWall) {
			game.placeableWall.x = x;
			game.placeableWall.y = y;
		} else {
			// Otherwise update rifle aim to follow cursor
			var angle = sniper.updateAim(x, y);
			// Let the updateAim method handle the character orientation
			// We don't rotate the sniper character itself anymore
			// This prevents the character from being upside down when aiming
		}
	}
};
game.down = function (x, y, obj) {
	if (!gameActive) return;
	// Check if weapon shop item was clicked
	if (weaponShop.checkItemClick(x, y)) {
		return;
	}
	// Check if building shop item was clicked
	if (buildingShop.checkItemClick(x, y)) {
		return;
	}
	// If placing a wall, place it at the clicked position
	if (game.isPlacing && game.placeableWall) {
		// Don't place near bunker or too close to top-left corner
		var distToBunker = Math.sqrt(Math.pow(x - bunker.x, 2) + Math.pow(y - bunker.y, 2));
		var distToTopLeft = Math.sqrt(Math.pow(x - 100, 2) + Math.pow(y - 100, 2));
		if (distToBunker < 150 || distToTopLeft < 100 || y > bunkerY - 50) {
			// Can't place here - flash red
			LK.effects.flashObject(game.placeableWall, 0xFF0000, 300);
			return;
		}
		// Create an actual wall at this position
		var wall = new Wall(game.placeableWall.buildingType, game.placeableWall.buildingHealth);
		wall.x = x;
		wall.y = y;
		game.addChild(wall);
		// Add to walls array if we don't have one
		if (!game.walls) {
			game.walls = [];
		}
		game.walls.push(wall);
		// Remove placeable wall
		game.removeChild(game.placeableWall);
		game.placeableWall = null;
		game.isPlacing = false;
		return;
	}
	// Fire at touch location (single shot for all weapons)
	var bullet = sniper.shoot(x, y);
	if (bullet) {
		bullets.push(bullet);
		game.addChild(bullet);
	}
};
game.up = function (x, y, obj) {
	// No machine gun auto fire to stop
};
// Update function called every frame
game.update = function () {
	if (!gameActive) return;
	// Only spawn enemies if a wave is in progress
	if (waveInProgress) {
		// Spawn enemies
		spawnEnemy();
		// Update enemies
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i].active) {
				enemies[i].update();
			}
		}
		// Check for collisions
		checkCollisions();
	}
	// Update bullets regardless of wave status
	for (var i = 0; i < bullets.length; i++) {
		if (bullets[i].active) {
			bullets[i].update();
		}
	}
	// Update walls and check for wall-enemy collisions
	if (game.walls && game.walls.length > 0) {
		for (var i = game.walls.length - 1; i >= 0; i--) {
			var wall = game.walls[i];
			// Update wall health bar
			wall.update();
			// Check for collisions with enemies
			for (var j = enemies.length - 1; j >= 0; j--) {
				var enemy = enemies[j];
				if (enemy.active && wall.intersects(enemy)) {
					// Stop enemy and set it to attack the wall
					if (!enemy.isAttackingWall) {
						enemy.isAttackingWall = true;
						enemy.attackTarget = wall;
						enemy.attackAnimationTicks = 0;
					}
					// Check if wall was destroyed after the attack
					if (wall.health <= 0) {
						// Remove wall if destroyed
						game.removeChild(wall);
						game.walls.splice(i, 1);
						// Reset any enemies attacking this wall
						for (var k = 0; k < enemies.length; k++) {
							if (enemies[k].attackTarget === wall) {
								enemies[k].isAttackingWall = false;
								enemies[k].attackTarget = null;
								// Reset enemy position and rotation
								tween(enemies[k].graphics, {
									rotation: 0,
									y: 0
								}, {
									duration: 200,
									easing: tween.easeOut
								});
							}
						}
						break;
					}
				}
			}
		}
	}
	// Update muzzle flashes
	Object.keys(sniper.muzzleFlashes).forEach(function (key) {
		if (sniper.muzzleFlashes[key].active) {
			sniper.muzzleFlashes[key].update();
		}
	});
	// Update ally if present
	if (ally && ally.active) {
		ally.update();
	} else if (ally && !ally.active) {
		// Remove dead ally from game
		game.removeChild(ally);
		ally = null;
	}
	// Update difficulty (handles wave transitions)
	increaseDifficulty();
	// Continuously update damage indicator when health is low
	if (bunkerHealth / maxBunkerHealth < 0.4) {
		// Move damage indicator more frequently as health gets lower
		if (LK.ticks % Math.max(5, Math.floor(bunkerHealth / maxBunkerHealth * 20)) === 0) {
			bunker.showDamage(bunkerHealth / maxBunkerHealth);
		}
	}
	// Update UI
	if (LK.ticks % 30 === 0) {
		updateUI();
	}
};
// Make sure the weapon shop starts with the appropriate weapon equipped
weaponShop.selectWeapon(0); // Start with basic rifle selected
updateAmmoUI(); // Show initial ammo
// Initialize UI
updateUI();
// Ensure damage indicator is invisible at start
bunker.damageIndicator.alpha = 0;
updateBunkerHealth();
// Calculate initial enemies required for first wave
enemiesRequired = enemiesPerWave;
// Start the first wave with countdown
waveInProgress = false;
waveCountdown.startCountdown(function () {
	startNewWave();
});
// Place random bushes and trees around the game area
function placeBushes() {
	// Number of decorative elements to place
	var bushCount = 25;
	var treeCount = 15;
	// Positions to avoid (bunker and sniper area)
	var avoidX = 2048 / 2;
	var avoidY = bunkerY;
	var avoidRadius = 200;
	// Also avoid the top-left corner where menu icon is located
	var topLeftX = 50;
	var topLeftY = 50;
	var topLeftRadius = 100;
	// Add bushes
	for (var i = 0; i < bushCount; i++) {
		var bush = new Bush();
		// Keep generating positions until we find a suitable one
		var validPosition = false;
		var attempts = 0;
		while (!validPosition && attempts < 10) {
			// Generate random position
			bush.x = Math.random() * 2048;
			bush.y = Math.random() * 2732;
			// Check distance from bunker area
			var distToBunker = Math.sqrt(Math.pow(bush.x - avoidX, 2) + Math.pow(bush.y - avoidY, 2));
			// Check distance from top-left corner
			var distToTopLeft = Math.sqrt(Math.pow(bush.x - topLeftX, 2) + Math.pow(bush.y - topLeftY, 2));
			// Position is valid if it's away from both areas to avoid
			if (distToBunker > avoidRadius && distToTopLeft > topLeftRadius) {
				validPosition = true;
			}
			attempts++;
		}
		// Add bush behind other game elements (insert at the beginning of children array)
		game.addChildAt(bush, 0);
	}
	// Add trees
	for (var i = 0; i < treeCount; i++) {
		var tree = new Tree();
		// Keep generating positions until we find a suitable one
		var validPosition = false;
		var attempts = 0;
		while (!validPosition && attempts < 10) {
			// Generate random position
			tree.x = Math.random() * 2048;
			tree.y = Math.random() * 2732;
			// Check distance from bunker area
			var distToBunker = Math.sqrt(Math.pow(tree.x - avoidX, 2) + Math.pow(tree.y - avoidY, 2));
			// Check distance from top-left corner
			var distToTopLeft = Math.sqrt(Math.pow(tree.x - topLeftX, 2) + Math.pow(tree.y - topLeftY, 2));
			// Position is valid if it's away from both areas to avoid
			if (distToBunker > avoidRadius && distToTopLeft > topLeftRadius) {
				validPosition = true;
			}
			attempts++;
		}
		// Add tree behind other game elements (insert at the beginning of children array)
		game.addChildAt(tree, 0);
	}
}
// Add bushes to the game
placeBushes();
// Start background music
LK.playMusic('gameBgMusic', {
	fade: {
		start: 0,
		end: 0.3,
		duration: 1000
	}
});

===================================================================
--- original.js
+++ change.js
@@ -250,9 +250,9 @@
 		self.buildingItems.push(item);
 		self.panel.addChild(item);
 	}
 	// Position panel
-	self.panel.y = 350;
+	self.panel.y = 250;
 	// Handle shop button press
 	self.shopButton.down = function (x, y, obj) {
 		self.toggleShop();
 	};
@@ -1867,9 +1867,9 @@
 		self.weaponItems.push(item);
 		self.panel.addChild(item);
 	}
 	// Position panel
-	self.panel.y = 350;
+	self.panel.y = 250;
 	// Handle shop button press
 	self.shopButton.down = function (x, y, obj) {
 		self.toggleShop();
 	};