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

/**** 
* Classes
****/ 
// Beam item class
var BeamItem = Container.expand(function () {
	var self = Container.call(this);
	var beamSprite = self.attachAsset('beamItem', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	beamSprite.width = 90;
	beamSprite.height = 90;
	beamSprite.alpha = 0.95;
	self.update = function () {
		self.y += 12 * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});
// Enemy type 1: moves straight down
var Enemy1 = Container.expand(function () {
	var self = Container.call(this);
	var enemySprite = self.attachAsset('enemy1', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 200;
	enemySprite.height = 200;
	self.speed = 8 + Math.random() * 4;
	self.update = function () {
		self.y += self.speed * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});
// Enemy type 2: moves in sine wave
var Enemy2 = Container.expand(function () {
	var self = Container.call(this);
	var enemySprite = self.attachAsset('enemy2', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 160;
	enemySprite.height = 160;
	self.speed = 7 + Math.random() * 3;
	self.waveAmplitude = 120 + Math.random() * 80;
	self.waveSpeed = 0.02 + Math.random() * 0.01;
	self.baseX = 0;
	self.t = 0;
	self.update = function () {
		var speedMult = typeof gameSpeed !== "undefined" ? gameSpeed : 1;
		self.y += self.speed * speedMult;
		self.t += self.waveSpeed * speedMult;
		self.x = self.baseX + Math.sin(self.t * 6.28) * self.waveAmplitude;
	};
	return self;
});
// Strong Enemy3: needs 5 hits to die, moves straight down, larger and purple
var Enemy3 = Container.expand(function () {
	var self = Container.call(this);
	var enemySprite = self.attachAsset('enemy3', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 260;
	enemySprite.height = 260;
	self.speed = 6 + Math.random() * 2;
	self.hp = 5;
	self.update = function () {
		self.y += self.speed * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});
// Enemy4: new enemy type, moves diagonally, bounces off screen edges, explodes when near hero, needs 3 hits to die
var Enemy4 = Container.expand(function () {
	var self = Container.call(this);
	var enemySprite = self.attachAsset('Enemy4', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 180;
	enemySprite.height = 180;
	self.speedX = (Math.random() < 0.5 ? 1 : -1) * (7 + Math.random() * 3);
	self.speedY = 7 + Math.random() * 3;
	self.exploded = false;
	self.hp = 3; // Needs 3 hits to die
	self.update = function () {
		// Initialize random explosion timer if not set
		if (typeof self.randomExplosionTimer === "undefined") {
			// Random explosion time between 2-8 seconds (120-480 frames at 60fps)
			self.randomExplosionTimer = 120 + Math.floor(Math.random() * 361);
		}
		var speedMult = typeof gameSpeed !== "undefined" ? gameSpeed : 1;
		// Countdown random explosion timer
		if (!self.exploded) {
			self.randomExplosionTimer -= speedMult;
			// Check for random explosion
			if (self.randomExplosionTimer <= 0) {
				self.exploded = true;
				// Flash explosion effect
				LK.effects.flashObject(self, 0xffffff, 120);
				// Throw 4 bullets around
				if (typeof enemyBullets !== "undefined" && typeof game !== "undefined") {
					for (var bulletDir = 0; bulletDir < 4; bulletDir++) {
						var bullet = new EnemyBullet();
						bullet.x = self.x;
						bullet.y = self.y;
						// 4 directions: up, right, down, left (90 degrees apart)
						var angle = bulletDir * Math.PI / 2;
						var speed = 20;
						bullet.speedX = Math.cos(angle) * speed;
						bullet.speedY = Math.sin(angle) * speed;
						enemyBullets.push(bullet);
						game.addChild(bullet);
					}
					LK.getSound('enemyShoot').play();
				}
				// Play explosion animation (particles)
				var particleCount = 16;
				for (var pi = 0; pi < particleCount; pi++) {
					var part = LK.getAsset('Enemy4', {
						anchorX: 0.5,
						anchorY: 0.5
					});
					part.x = self.x;
					part.y = self.y;
					part.width = 24 + Math.random() * 24;
					part.height = 24 + Math.random() * 24;
					part.alpha = 0.8 + Math.random() * 0.2;
					var angle = Math.PI * 2 * (pi / particleCount) + Math.random() * 0.2;
					var speed = 12 + Math.random() * 8;
					var vx = Math.cos(angle) * speed;
					var vy = Math.sin(angle) * speed;
					part.life = 10 + Math.floor(Math.random() * 10);
					part.update = function () {
						this.x += vx;
						this.y += vy;
						this.life--;
						this.alpha *= 0.88 + Math.random() * 0.06;
						if (this.life <= 0) {
							this.destroy();
						}
					};
					if (typeof game !== "undefined") {
						game.addChild(part);
					}
				}
				// Remove Enemy4 from game/enemies array on next update
				if (typeof self.destroy === "function") {
					self.destroy();
				}
				return;
			}
		}
		// --- Enemy4 parabolic movement to attack hero from behind ---
		// Only move if hero exists and Enemy4 is not exploded
		if (typeof hero !== "undefined" && !self.exploded) {
			// Initialize parabolic movement if not already started
			if (typeof self.parabolicStarted === "undefined") {
				self.parabolicStarted = true;
				self.startX = self.x;
				self.startY = self.y;
				// Calculate target position behind the hero
				var heroBackOffset = 200; // Distance behind hero
				var targetX = hero.x;
				var targetY = hero.y + heroBackOffset; // Position behind hero
				// Calculate control point for parabolic curve (creates the arc)
				var midX = (self.startX + targetX) / 2;
				var midY = Math.min(self.startY, targetY) - 300; // Arc height above both points
				self.controlX = midX + (Math.random() - 0.5) * 400; // Add some randomness
				self.controlY = midY;
				// Set final target
				self.targetX = targetX;
				self.targetY = targetY;
				// Animation progress
				self.progress = 0;
				self.duration = 180; // 3 seconds at 60fps
			}
			// Update parabolic movement
			if (self.progress < 1) {
				self.progress += 1 / self.duration * speedMult;
				if (self.progress > 1) self.progress = 1;
				// Quadratic Bezier curve calculation
				var t = self.progress;
				var invT = 1 - t;
				// B(t) = (1-t)²P₀ + 2(1-t)tP₁ + t²P₂
				self.x = invT * invT * self.startX + 2 * invT * t * self.controlX + t * t * self.targetX;
				self.y = invT * invT * self.startY + 2 * invT * t * self.controlY + t * t * self.targetY;
			} else {
				// After parabolic movement, move straight toward hero
				var dx = hero.x - self.x;
				var dy = hero.y - self.y;
				var dist = Math.sqrt(dx * dx + dy * dy);
				var speed = 18;
				if (dist > 0) {
					self.speedX = dx / dist * speed;
					self.speedY = dy / dist * speed;
					self.x += self.speedX * speedMult;
					self.y += self.speedY * speedMult;
				}
			}
		}
		// Bounce off left/right edges only if not in parabolic movement
		if (typeof self.progress === "undefined" || self.progress >= 1) {
			if (self.x - enemySprite.width / 2 <= 0 && self.speedX < 0 || self.x + enemySprite.width / 2 >= 2048 && self.speedX > 0) {
				self.speedX *= -1;
			}
		}
		// --- Enemy4 explodes and deals 2 damage when near or colliding with hero ---
		if (typeof hero !== "undefined" && !self.exploded && (
		// Collides with hero
		self.intersects(hero) ||
		// Or is "near" hero (distance < 120px)
		Math.abs(self.x - hero.x) < 120 && Math.abs(self.y - hero.y) < 120)) {
			self.exploded = true;
			// Tiny flash/explosion effect on Enemy4 itself
			LK.effects.flashObject(self, 0xffffff, 120);
			// Only deal damage if not in godMode or shieldActive
			if (!godMode && !shieldActive) {
				LK.getSound('heroHit').play();
				LK.effects.flashScreen(0xff0000, 800);
				if (typeof heroHealth !== "undefined") {
					heroHealth -= 2;
					if (heroHealth < 0) {
						heroHealth = 0;
					}
					if (typeof updateHealthBar === "function") {
						updateHealthBar();
					}
					if (typeof updateDemoHealthSquares === "function") {
						updateDemoHealthSquares();
					}
					if (heroHealth <= 0) {
						LK.getSound('Death').play();
						LK.showGameOver();
						return;
					}
				}
			} else if (shieldActive) {
				LK.effects.flashObject(hero, 0x00ffff, 200);
			}
			// Play explosion animation (particles)
			var particleCount = 16;
			for (var pi = 0; pi < particleCount; pi++) {
				var part = LK.getAsset('Enemy4', {
					anchorX: 0.5,
					anchorY: 0.5
				});
				part.x = self.x;
				part.y = self.y;
				part.width = 24 + Math.random() * 24;
				part.height = 24 + Math.random() * 24;
				part.alpha = 0.8 + Math.random() * 0.2;
				var angle = Math.PI * 2 * (pi / particleCount) + Math.random() * 0.2;
				var speed = 12 + Math.random() * 8;
				var vx = Math.cos(angle) * speed;
				var vy = Math.sin(angle) * speed;
				part.life = 10 + Math.floor(Math.random() * 10);
				part.update = function () {
					this.x += vx;
					this.y += vy;
					this.life--;
					this.alpha *= 0.88 + Math.random() * 0.06;
					if (this.life <= 0) {
						this.destroy();
					}
				};
				if (typeof game !== "undefined") {
					game.addChild(part);
				}
			}
			// Remove Enemy4 from game/enemies array on next update
			if (typeof self.destroy === "function") {
				self.destroy();
			}
			// Remove from enemies[] in main game.update (handled by main loop)
			return;
		}
		// Enemy4 now ignores proximity to hero and does not explode or interact when flying through the hero
	};
	return self;
});
// Enemy bullet class
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletSprite = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 16;
	self.update = function () {
		var speedMult = typeof gameSpeed !== "undefined" ? gameSpeed : 1;
		self.x += self.speedX * speedMult;
		self.y += self.speedY * speedMult;
	};
	return self;
});
// Extraordinary EnemyX: spawns only once after 250 score, unique appearance and behavior
var EnemyX = Container.expand(function () {
	var self = Container.call(this);
	// Use dedicated enemyX asset
	var enemySprite = self.attachAsset('enemyX', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 600;
	enemySprite.height = 600;
	enemySprite.alpha = 0.98;
	self.speed = 4 + Math.random() * 2;
	// Set EnemyX health to 500 in boss mode, 250 in normal mode
	self.hp = typeof bossMode !== "undefined" && bossMode ? 500 : 250; // much higher HP (500 hits required)
	// --- EnemyX shooting logic ---
	self.shootTick = 0;
	self.beamCooldown = 0;
	self.update = function () {
		// Boss mode: randomly drop health potion, shield, or beam items from EnemyX (less frequently)
		if (typeof bossMode !== "undefined" && bossMode && Math.random() < 0.005) {
			// 1/3 chance for each item
			var dropType = Math.floor(Math.random() * 3);
			var item;
			if (dropType === 0) {
				item = new HealthPotion();
			} else if (dropType === 1) {
				item = new ShieldItem();
			} else {
				item = new BeamItem();
			}
			item.x = self.x + (Math.random() - 0.5) * 120;
			item.y = self.y + 120;
			if (typeof items !== "undefined" && typeof game !== "undefined") {
				items.push(item);
				game.addChild(item);
			}
		}
		// Only allow EnemyX to wander in the upper part of the screen (y between 0 and 500)
		if (typeof self.t === "undefined") {
			self.t = Math.random() * 2;
		}
		var speedMult = typeof gameSpeed !== "undefined" ? gameSpeed : 1;
		self.t += 0.012 * speedMult;
		// Sway left/right slowly
		self.x += Math.sin(self.t * 2.5) * 6 * speedMult;
		// Restrict vertical movement: only allow y to increase up to a certain limit, then bounce back up
		if (typeof self.directionY === "undefined") {
			self.directionY = 1;
		}
		// Set upper and lower bounds for wandering
		var upperY = 60 + enemySprite.height / 2;
		var lowerY = 420 + enemySprite.height / 2;
		// Move down or up depending on direction
		self.y += self.speed * self.directionY * 0.5 * speedMult; // much slower vertical movement
		// If reached lower bound, go up; if reached upper bound, go down
		if (self.y >= lowerY) {
			self.y = lowerY;
			self.directionY = -1;
		} else if (self.y <= upperY) {
			self.y = upperY;
			self.directionY = 1;
		}
		// --- Shooting less frequently ---
		self.shootTick = (self.shootTick || 0) + speedMult;
		self.beamCooldown = (self.beamCooldown || 0) - speedMult;
		// Shoot a bullet every 90-150 ticks (randomized, less frequent)
		if (self.shootTick >= 90 + Math.floor(Math.random() * 61)) {
			if (typeof game !== "undefined" && typeof hero !== "undefined") {
				// Shoot 3-way spread
				for (var i = -1; i <= 1; i++) {
					var bullet = new EnemyBullet();
					bullet.x = self.x + i * 60;
					bullet.y = self.y + 120;
					// Aim at hero, but with spread
					var dx = hero.x - bullet.x + i * 80;
					var dy = hero.y - bullet.y;
					var len = Math.sqrt(dx * dx + dy * dy);
					if (len > 0) {
						bullet.speedX = dx / len * 20;
						bullet.speedY = dy / len * 20;
					}
					enemyBullets.push(bullet);
					game.addChild(bullet);
					LK.getSound('enemyShoot').play();
				}
			}
			self.shootTick = 0;
		}
		// Sometimes shoot a beam down (every 360-540 ticks, much more rare, and only hit when visually active)
		if (self.beamCooldown <= 0 && Math.random() < 0.012) {
			if (typeof game !== "undefined") {
				// Visual: big vertical beam
				var beam = LK.getAsset('beamItem', {
					anchorX: 0.5,
					anchorY: 0,
					x: self.x,
					y: self.y + enemySprite.height / 2
				});
				beam.width = 120;
				beam.height = 2732 - (self.y + enemySprite.height / 2);
				beam.alpha = 0.38 + Math.random() * 0.12;
				game.addChild(beam);
				// Beam effect: damage hero if in column for 60 frames, but only on first 20 frames is it "active"
				beam.life = 60;
				beam.activeFrames = 20;
				beam.update = function () {
					this.life--;
					// Flicker effect
					this.alpha = 0.32 + Math.random() * 0.18;
					// Only hit hero if beam is visually active (first 20 frames)
					if (this.life > 60 - this.activeFrames) {
						if (typeof hero !== "undefined" && hero.y > this.y && hero.y < this.y + this.height) {
							if (Math.abs(hero.x - this.x) < this.width / 2 + hero.width / 2) {
								if (!godMode && !shieldActive && this.life === 60 - this.activeFrames + 1) {
									LK.getSound('heroHit').play();
									LK.effects.flashScreen(0xff0000, 800);
									heroHealth--;
									updateHealthBar();
									updateDemoHealthSquares && updateDemoHealthSquares();
									if (heroHealth <= 0) {
										LK.getSound('Death').play();
										LK.showGameOver();
										return;
									}
								} else if (!godMode && shieldActive && this.life === 60 - this.activeFrames + 1) {
									LK.effects.flashObject(hero, 0x00ffff, 200);
								}
							}
						}
					}
					if (this.life <= 0) {
						this.destroy();
					}
				};
				// Add to enemyBullets for update/removal
				enemyBullets.push(beam);
				// Play laser sound
				LK.getSound('laser').play();
				// Set cooldown for next beam (much more rare)
				self.beamCooldown = 360 + Math.floor(Math.random() * 180);
			}
		}
	};
	return self;
});
// EnemyZ: New boss type, appears as a large, fast, zig-zagging boss with high HP and double beam attack
var EnemyZ = Container.expand(function () {
	var self = Container.call(this);
	// Use enemyZ asset, large size
	var enemySprite = self.attachAsset('EnemyZ', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemySprite.width = 520;
	enemySprite.height = 520;
	enemySprite.alpha = 0.99;
	self.speed = 10 + Math.random() * 3;
	self.hp = typeof bossMode !== "undefined" && bossMode ? 800 : 500; // EnemyZ health: 800 in boss mode, 500 in normal mode
	self.t = Math.random() * 2;
	self.zigzagAmplitude = 320 + Math.random() * 80;
	self.zigzagSpeed = 0.018 + Math.random() * 0.008;
	self.baseX = 2048 / 2;
	self.directionY = 1;
	self.shootTick = 0;
	self.beamCooldown = 0;
	self.update = function () {
		// Zig-zag movement, stays in upper half of screen
		var speedMult = typeof gameSpeed !== "undefined" ? gameSpeed : 1;
		self.t += self.zigzagSpeed * speedMult;
		self.x = self.baseX + Math.sin(self.t * 2.5) * self.zigzagAmplitude;
		// Restrict vertical movement: only allow y to increase up to a certain limit, then bounce back up
		var upperY = 80 + enemySprite.height / 2;
		var lowerY = 600 + enemySprite.height / 2;
		self.y += self.speed * self.directionY * 0.5 * speedMult;
		if (self.y >= lowerY) {
			self.y = lowerY;
			self.directionY = -1;
		} else if (self.y <= upperY) {
			self.y = upperY;
			self.directionY = 1;
		}
		// --- Shooting logic: fires 5-way spread every 48-72 ticks ---
		self.shootTick = (self.shootTick || 0) + speedMult;
		self.beamCooldown = (self.beamCooldown || 0) - speedMult;
		if (self.shootTick >= 72 + Math.floor(Math.random() * 49)) {
			if (typeof game !== "undefined" && typeof hero !== "undefined") {
				// Shoot 5-way spread
				for (var i = -2; i <= 2; i++) {
					var bullet = new EnemyBullet();
					bullet.x = self.x + i * 60;
					bullet.y = self.y + 120;
					// Aim at hero, but with spread
					var dx = hero.x - bullet.x + i * 60;
					var dy = hero.y - bullet.y;
					var len = Math.sqrt(dx * dx + dy * dy);
					if (len > 0) {
						bullet.speedX = dx / len * 22;
						bullet.speedY = dy / len * 22;
					}
					enemyBullets.push(bullet);
					game.addChild(bullet);
					LK.getSound('enemyShoot').play();
				}
			}
			self.shootTick = 0;
		}
		// --- Single explosive attack: one explosive bullet at once, more frequent than EnemyX ---
		if (self.beamCooldown <= 0 && Math.random() < 0.025) {
			if (typeof game !== "undefined") {
				// Fire one explosive bullet at hero
				var explosive = new EnemyBullet();
				explosive.x = self.x;
				explosive.y = self.y + 120;
				// Aim at hero
				var dx = hero.x - explosive.x;
				var dy = hero.y - explosive.y;
				var len = Math.sqrt(dx * dx + dy * dy);
				if (len > 0) {
					explosive.speedX = dx / len * 25;
					explosive.speedY = dy / len * 25;
				}
				// Make explosive bullets larger and more visible
				explosive.children[0].width = 60;
				explosive.children[0].height = 60;
				explosive.children[0].tint = 0xff4400; // Orange tint for explosive look
				// Add explosive properties
				explosive.isExplosive = true;
				explosive.explosionTimer = 12; // 0.2 seconds until explosion (12 ticks at 60fps)
				explosive.hasExploded = false;
				explosive.explosionRadius = 200; // Area damage radius
				enemyBullets.push(explosive);
				game.addChild(explosive);
				LK.getSound('enemyShoot').play();
				// Set cooldown for next explosive (more frequent than EnemyX)
				self.beamCooldown = 180 + Math.floor(Math.random() * 90);
			}
		}
	};
	return self;
});
// Health potion class (separate asset)
var HealthPotion = Container.expand(function () {
	var self = Container.call(this);
	var potionSprite = self.attachAsset('healthPotion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	potionSprite.width = 90;
	potionSprite.height = 90;
	potionSprite.alpha = 0.95;
	self.update = function () {
		self.y += 16 * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroSprite = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = heroSprite.width / 2;
	self.shootCooldown = 0;
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
	};
	return self;
});
// Hero bullet class
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletSprite = self.attachAsset('heroBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -32;
	self.update = function () {
		self.y += self.speed * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});
// Shield item class
var ShieldItem = Container.expand(function () {
	var self = Container.call(this);
	var shieldSprite = self.attachAsset('shieldItem', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	shieldSprite.width = 90;
	shieldSprite.height = 90;
	shieldSprite.alpha = 0.95; // Make it much brighter/less transparent
	self.update = function () {
		self.y += 12 * (typeof gameSpeed !== "undefined" ? gameSpeed : 1);
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181818
});

/**** 
* Game Code
****/ 
// Add 6 healthbar assets to the screen (for demo/test, not for health UI)
function _typeof(o) {
	"@babel/helpers - typeof";
	return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof(o);
}
var greenSquares = [];
// (defer adding to game until after background is added)
for (var i = 0; i < 6; i++) {
	var square = LK.getAsset('Healthbar', {
		anchorX: 0,
		anchorY: 1,
		x: 60 + i * 70,
		y: 2732 - 60,
		width: 60,
		height: 60,
		tint: 0x44ff44
	});
	greenSquares.push(square);
}
// Helper to update demo health squares to match heroHealth
function updateDemoHealthSquares() {
	for (var i = 0; i < greenSquares.length; i++) {
		if (i < heroHealth) {
			greenSquares[i].visible = true;
		} else {
			greenSquares[i].visible = false;
		}
	}
}
// separate asset for health potion
// Play menu music and stop background music when menu is shown
// --- MENU OVERLAY ---
// Add menu asset as background in menu, and background asset in game
var menuBgSprite = LK.getAsset('Menu', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
menuBgSprite.width = 2048;
menuBgSprite.height = 2732;
game.addChild(menuBgSprite);
var backgroundSprite = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
});
// Scale background to fill the screen (2048x2732)
var bgOriginalWidth = backgroundSprite.width;
var bgOriginalHeight = backgroundSprite.height;
var scaleX = 2048 / bgOriginalWidth;
var scaleY = 2732 / bgOriginalHeight;
var scale = Math.max(scaleX, scaleY); // cover entire area
backgroundSprite.width = bgOriginalWidth * scale;
backgroundSprite.height = bgOriginalHeight * scale;
// Center if needed (in case aspect ratio doesn't match)
backgroundSprite.x = (2048 - backgroundSprite.width) / 2;
backgroundSprite.y = (2732 - backgroundSprite.height) / 2;
backgroundSprite.visible = false; // Only show in game, not in menu
game.addChild(backgroundSprite);
// Add green squares after background so they are in front
for (var i = 0; i < greenSquares.length; i++) {
	greenSquares[i].visible = false; // Hide in menu
	game.addChild(greenSquares[i]);
}
LK.stopMusic();
LK.playMusic('Menu');
var menuOverlay = new Container();
menuOverlay.zIndex = 10000; // ensure on top
// Title text
var titleTxt = new Text2("GALAXY DODGE SHOOTER", {
	size: 160,
	fill: "#fff",
	fontWeight: "bold"
});
titleTxt.anchor.set(0.5, 0);
titleTxt.x = 2048 / 2;
titleTxt.y = 220;
menuOverlay.addChild(titleTxt);
// Play button background
var playBtnBg = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
playBtnBg.width = 600;
playBtnBg.height = 220;
playBtnBg.alpha = 0.7;
playBtnBg.x = 2048 / 2;
playBtnBg.y = 700;
menuOverlay.addChild(playBtnBg);
// Play button text
var playBtn = new Text2("PLAY", {
	size: 140,
	fill: 0x00EAFF,
	fontWeight: "bold"
});
playBtn.anchor.set(0.5, 0.5);
playBtn.x = 2048 / 2;
playBtn.y = 700;
menuOverlay.addChild(playBtn);
// Game mode variables
var godMode = false;
var bossMode = false;
var scoreMode = false;
// Add music toggle button to menu  
var musicOn = true;
// Place music button below play button (with margin)
var musicBtnBg = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
musicBtnBg.width = 340;
musicBtnBg.height = 140;
musicBtnBg.alpha = 0.7;
musicBtnBg.x = 2048 / 2;
musicBtnBg.y = 700 + 220 / 2 + 60 + musicBtnBg.height / 2; // below playBtnBg
menuOverlay.addChild(musicBtnBg);
var musicBtn = new Text2("MUSIC: ON", {
	size: 80,
	fill: 0x00EAFF,
	fontWeight: "bold"
});
musicBtn.anchor.set(0.5, 0.5);
musicBtn.x = 2048 / 2;
musicBtn.y = musicBtnBg.y;
menuOverlay.addChild(musicBtn);
// Add help button below music button
var helpBtnBg = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
helpBtnBg.width = 340;
helpBtnBg.height = 140;
helpBtnBg.alpha = 0.7;
helpBtnBg.x = 2048 / 2;
helpBtnBg.y = musicBtnBg.y + musicBtnBg.height / 2 + 60 + helpBtnBg.height / 2;
menuOverlay.addChild(helpBtnBg);
var helpBtn = new Text2("HELP", {
	size: 80,
	fill: 0x00EAFF,
	fontWeight: "bold"
});
helpBtn.anchor.set(0.5, 0.5);
helpBtn.x = 2048 / 2;
helpBtn.y = helpBtnBg.y;
menuOverlay.addChild(helpBtn);
// Add scoreboard container with scoreboard asset background
var scoreboardBg = LK.getAsset('Scoreboard', {
	anchorX: 0.5,
	anchorY: 0
});
// Make the scoreboard background bigger
scoreboardBg.width = 1100;
scoreboardBg.height = 1400;
scoreboardBg.alpha = 0.9;
scoreboardBg.x = 1500; // Further right side of screen
scoreboardBg.y = helpBtnBg.y + helpBtnBg.height / 2 + 80; // Below help button with margin
menuOverlay.addChild(scoreboardBg);
var scoreboardContainer = new Container();
scoreboardContainer.x = scoreboardBg.x;
scoreboardContainer.y = scoreboardBg.y;
menuOverlay.addChild(scoreboardContainer);
// Scoreboard title
var scoreboardTitle = new Text2("TOP 10 SCORES", {
	size: 70,
	fill: "#fff",
	fontWeight: "bold"
});
scoreboardTitle.anchor.set(0.5, 0);
scoreboardTitle.x = 0;
scoreboardTitle.y = 130;
scoreboardContainer.addChild(scoreboardTitle);
// Array to hold scoreboard text objects
var scoreboardTexts = [];
// Function to update scoreboard display
function updateScoreboard() {
	// Get current high scores and names from storage as individual keys
	var highScores = [];
	var highScoreNames = [];
	for (var i = 0; i < 10; i++) {
		var score = storage["highScore_" + i];
		var name = storage["highScoreName_" + i];
		if (score !== undefined && score !== null) {
			highScores.push(score);
			highScoreNames.push(name || "Player");
		}
	}
	// Clear existing scoreboard text objects
	for (var i = 0; i < scoreboardTexts.length; i++) {
		scoreboardContainer.removeChild(scoreboardTexts[i]);
	}
	scoreboardTexts = [];
	// Display top 10 scores
	for (var i = 0; i < Math.min(10, highScores.length); i++) {
		var score = highScores[i];
		var name = highScoreNames[i] || "Player";
		var displayText = i + 1 + ". " + name + " - " + score;
		var scoreText = new Text2(displayText, {
			size: 70,
			fill: "#fff"
		});
		scoreText.anchor.set(0, 0);
		scoreText.x = -300;
		scoreText.y = 260 + i * 80; // Space entries 80 pixels apart, start at 260
		scoreboardContainer.addChild(scoreText);
		scoreboardTexts.push(scoreText);
	}
	// If no scores yet, show placeholder
	if (highScores.length === 0) {
		var noScoresText = new Text2("No scores yet!", {
			size: 70,
			fill: "#aaa"
		});
		noScoresText.anchor.set(0, 0);
		noScoresText.x = -300;
		noScoresText.y = 260;
		scoreboardContainer.addChild(noScoresText);
		scoreboardTexts.push(noScoresText);
	}
}
// Initialize scoreboard
updateScoreboard();
// Function to save high score
function saveHighScore(newScore, nickname) {
	// Only save scores from score mode
	if (!scoreMode) return;
	// Get current high scores using individual storage keys
	var highScores = [];
	var highScoreNames = [];
	for (var i = 0; i < 10; i++) {
		var score = storage["highScore_" + i];
		var name = storage["highScoreName_" + i];
		if (score !== undefined && score !== null) {
			highScores.push(score);
			highScoreNames.push(name || "Player");
		}
	}
	// Use nickname if provided, otherwise fallback to Player
	var playerName = "Player";
	if (typeof nickname === "string" && nickname.trim().length > 0) {
		playerName = nickname.trim();
	}
	// Add new score and name
	highScores.push(newScore);
	highScoreNames.push(playerName);
	// Create combined array for sorting
	var combined = [];
	for (var i = 0; i < highScores.length; i++) {
		combined.push({
			score: highScores[i],
			name: highScoreNames[i]
		});
	}
	// Sort in descending order by score
	combined.sort(function (a, b) {
		return b.score - a.score;
	});
	// Keep only top 10
	if (combined.length > 10) {
		combined = combined.slice(0, 10);
	}
	// Separate back into two arrays
	var newHighScores = [];
	var newHighScoreNames = [];
	for (var i = 0; i < combined.length; i++) {
		newHighScores.push(combined[i].score);
		newHighScoreNames.push(combined[i].name);
	}
	// Save back to storage as individual keys (storage only supports literals)
	for (var i = 0; i < newHighScores.length; i++) {
		storage["highScore_" + i] = newHighScores[i];
		storage["highScoreName_" + i] = newHighScoreNames[i];
	}
	// Clear any remaining old scores beyond the new length
	for (var i = newHighScores.length; i < 10; i++) {
		if (storage["highScore_" + i] !== undefined) {
			storage["highScore_" + i] = undefined;
			storage["highScoreName_" + i] = undefined;
		}
	}
	// Update display
	updateScoreboard();
}
// --- MODE SELECTION MENU ---
var modeSelectionOverlay = null;
function showModeSelection() {
	if (modeSelectionOverlay && modeSelectionOverlay.visible) {
		return;
	}
	if (modeSelectionOverlay) {
		modeSelectionOverlay.visible = true;
		return;
	}
	modeSelectionOverlay = new Container();
	modeSelectionOverlay.zIndex = 15000; // between menu and help
	// Mode selection background using menu asset
	var bg = LK.getAsset('Menu', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	bg.width = 2048;
	bg.height = 2732;
	bg.alpha = 0.95;
	modeSelectionOverlay.addChild(bg);
	// Mode selection title
	var modeTitle = new Text2("SELECT GAME MODE", {
		size: 140,
		fill: "#fff",
		fontWeight: "bold"
	});
	modeTitle.anchor.set(0.5, 0);
	modeTitle.x = 2048 / 2;
	modeTitle.y = 400;
	modeSelectionOverlay.addChild(modeTitle);
	// Standard Mode Button
	var standardBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	standardBtnBg.width = 600;
	standardBtnBg.height = 220;
	standardBtnBg.alpha = 0.7;
	standardBtnBg.x = 2048 / 2;
	standardBtnBg.y = 800;
	modeSelectionOverlay.addChild(standardBtnBg);
	var standardBtn = new Text2("STANDARD MODE", {
		size: 90,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	standardBtn.anchor.set(0.5, 0.5);
	standardBtn.x = 2048 / 2;
	standardBtn.y = 800;
	modeSelectionOverlay.addChild(standardBtn);
	// God Mode Button
	var godBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	godBtnBg.width = 600;
	godBtnBg.height = 220;
	godBtnBg.alpha = 0.7;
	godBtnBg.x = 2048 / 2;
	godBtnBg.y = 1100;
	modeSelectionOverlay.addChild(godBtnBg);
	var godBtn = new Text2("GOD MODE", {
		size: 100,
		fill: 0xffd700,
		fontWeight: "bold"
	});
	godBtn.anchor.set(0.5, 0.5);
	godBtn.x = 2048 / 2;
	godBtn.y = 1100;
	modeSelectionOverlay.addChild(godBtn);
	// Boss Mode Button
	var bossBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	bossBtnBg.width = 600;
	bossBtnBg.height = 220;
	bossBtnBg.alpha = 0.7;
	bossBtnBg.x = 2048 / 2;
	bossBtnBg.y = 1400;
	modeSelectionOverlay.addChild(bossBtnBg);
	var bossBtn = new Text2("BOSS MODE", {
		size: 100,
		fill: 0xff4444,
		fontWeight: "bold"
	});
	bossBtn.anchor.set(0.5, 0.5);
	bossBtn.x = 2048 / 2;
	bossBtn.y = 1400;
	modeSelectionOverlay.addChild(bossBtn);
	// Score Mode Button
	var scoreBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	scoreBtnBg.width = 600;
	scoreBtnBg.height = 220;
	scoreBtnBg.alpha = 0.7;
	scoreBtnBg.x = 2048 / 2;
	scoreBtnBg.y = 1700;
	modeSelectionOverlay.addChild(scoreBtnBg);
	var scoreBtn = new Text2("SCORE MODE", {
		size: 100,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	scoreBtn.anchor.set(0.5, 0.5);
	scoreBtn.x = 2048 / 2;
	scoreBtn.y = 1700;
	modeSelectionOverlay.addChild(scoreBtn);
	// Back button
	var backBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	backBtnBg.width = 340;
	backBtnBg.height = 140;
	backBtnBg.alpha = 0.7;
	backBtnBg.x = 2048 / 2;
	backBtnBg.y = 2000;
	modeSelectionOverlay.addChild(backBtnBg);
	var backBtn = new Text2("BACK", {
		size: 80,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	backBtn.anchor.set(0.5, 0.5);
	backBtn.x = 2048 / 2;
	backBtn.y = 2000;
	modeSelectionOverlay.addChild(backBtn);
	// Mode selection interactions
	modeSelectionOverlay.down = function (x, y, obj) {
		// Standard Mode
		var dx = x - standardBtn.x;
		var dy = y - standardBtn.y;
		if (Math.abs(dx) <= standardBtnBg.width / 2 && Math.abs(dy) <= standardBtnBg.height / 2) {
			// Start standard mode
			modeSelectionOverlay.visible = false;
			menuOverlay.visible = false;
			menuActive = false;
			godMode = false;
			bossMode = false;
			scoreMode = false;
			if (typeof menuBgSprite !== "undefined") {
				menuBgSprite.visible = false;
			}
			if (typeof backgroundSprite !== "undefined") {
				backgroundSprite.visible = true;
			}
			// Show UI elements
			healthBarBg.visible = true;
			healthBar.visible = true;
			for (var i = 0; i < healthBarVSquares.length; i++) {
				healthBarVSquares[i].visible = true;
			}
			ultiBtn.visible = true;
			ultiBtn.bg.visible = true;
			hero.visible = true;
			for (var i = 0; i < greenSquares.length; i++) {
				greenSquares[i].visible = true;
			}
			LK.stopMusic();
			if (musicOn) {
				LK.playMusic('bgmusic');
			}
			return;
		}
		// God Mode
		var gdx = x - godBtn.x;
		var gdy = y - godBtn.y;
		if (Math.abs(gdx) <= godBtnBg.width / 2 && Math.abs(gdy) <= godBtnBg.height / 2) {
			// Start god mode
			modeSelectionOverlay.visible = false;
			menuOverlay.visible = false;
			menuActive = false;
			godMode = true;
			bossMode = false;
			scoreMode = false;
			if (typeof menuBgSprite !== "undefined") {
				menuBgSprite.visible = false;
			}
			if (typeof backgroundSprite !== "undefined") {
				backgroundSprite.visible = true;
			}
			// Show UI elements
			healthBarBg.visible = true;
			healthBar.visible = true;
			for (var i = 0; i < healthBarVSquares.length; i++) {
				healthBarVSquares[i].visible = true;
			}
			ultiBtn.visible = true;
			ultiBtn.bg.visible = true;
			hero.visible = true;
			for (var i = 0; i < greenSquares.length; i++) {
				greenSquares[i].visible = true;
			}
			LK.stopMusic();
			if (musicOn) {
				LK.playMusic('Godmode');
			}
			return;
		}
		// Boss Mode
		var bdx = x - bossBtn.x;
		var bdy = y - bossBtn.y;
		if (Math.abs(bdx) <= bossBtnBg.width / 2 && Math.abs(bdy) <= bossBtnBg.height / 2) {
			// Start boss mode
			modeSelectionOverlay.visible = false;
			menuOverlay.visible = false;
			menuActive = false;
			godMode = false;
			bossMode = true;
			scoreMode = false;
			if (typeof menuBgSprite !== "undefined") {
				menuBgSprite.visible = false;
			}
			if (typeof backgroundSprite !== "undefined") {
				backgroundSprite.visible = true;
			}
			// Show UI elements
			healthBarBg.visible = true;
			healthBar.visible = true;
			for (var i = 0; i < healthBarVSquares.length; i++) {
				healthBarVSquares[i].visible = true;
			}
			ultiBtn.visible = true;
			ultiBtn.bg.visible = true;
			hero.visible = true;
			for (var i = 0; i < greenSquares.length; i++) {
				greenSquares[i].visible = true;
			}
			LK.stopMusic();
			if (musicOn) {
				LK.playMusic('Boss');
			}
			// Set up for boss mode: reset score, enemyXSpawned, etc.
			score = 0;
			scoreTxt.setText(score);
			enemyXSpawned = false;
			bossMusicPlayed = true; // already playing
			spawnTick = 0;
			return;
		}
		// Score Mode
		var sdx = x - scoreBtn.x;
		var sdy = y - scoreBtn.y;
		if (Math.abs(sdx) <= scoreBtnBg.width / 2 && Math.abs(sdy) <= scoreBtnBg.height / 2) {
			// Start score mode
			modeSelectionOverlay.visible = false;
			menuOverlay.visible = false;
			menuActive = false;
			godMode = false;
			bossMode = false;
			scoreMode = true;
			if (typeof menuBgSprite !== "undefined") {
				menuBgSprite.visible = false;
			}
			if (typeof backgroundSprite !== "undefined") {
				backgroundSprite.visible = true;
			}
			// Show UI elements
			healthBarBg.visible = true;
			healthBar.visible = true;
			for (var i = 0; i < healthBarVSquares.length; i++) {
				healthBarVSquares[i].visible = true;
			}
			ultiBtn.visible = true;
			ultiBtn.bg.visible = true;
			hero.visible = true;
			for (var i = 0; i < greenSquares.length; i++) {
				greenSquares[i].visible = true;
			}
			LK.stopMusic();
			if (musicOn) {
				LK.playMusic('Scoremode');
			}
			return;
		}
		// Back button
		var backDx = x - backBtn.x;
		var backDy = y - backBtn.y;
		if (Math.abs(backDx) <= backBtnBg.width / 2 && Math.abs(backDy) <= backBtnBg.height / 2) {
			modeSelectionOverlay.visible = false;
			return;
		}
	};
	game.addChild(modeSelectionOverlay);
}
// Add menu overlay to game
game.addChild(menuOverlay);
// --- HELP MENU POPUP ---
var helpMenuOverlay = null;
function showHelpMenu() {
	if (helpMenuOverlay && helpMenuOverlay.visible) {
		return;
	}
	if (helpMenuOverlay) {
		helpMenuOverlay.visible = true;
		return;
	}
	helpMenuOverlay = new Container();
	helpMenuOverlay.zIndex = 20000;
	// Help menu background using helpbackground asset
	var bg = LK.getAsset('Helpbackground', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	bg.width = 2048;
	bg.height = 2732;
	bg.alpha = 1.0;
	helpMenuOverlay.addChild(bg);
	// Help title
	var helpTitle = new Text2("HELP", {
		size: 120,
		fill: "#fff",
		fontWeight: "bold"
	});
	helpTitle.anchor.set(0.5, 0);
	helpTitle.x = 2048 / 2;
	helpTitle.y = 320;
	helpMenuOverlay.addChild(helpTitle);
	// --- PAGE SYSTEM ---
	var helpPage = 0; // 0 = enemies, 1 = items
	// Enemy types info for help menu
	var enemyTypes = [{
		asset: 'enemy1',
		name: 'Enemy 1',
		desc: 'Standard enemy. Moves straight down. Easy to destroy.'
	}, {
		asset: 'enemy2',
		name: 'Enemy 2',
		desc: 'Sine-wave enemy. Moves in a wavy pattern. Harder to hit.'
	}, {
		asset: 'enemy3',
		name: 'Enemy 3',
		desc: 'Strong enemy. Takes 5 hits to destroy. Large and slow.'
	}, {
		asset: 'Enemy4',
		name: 'Enemy 4',
		desc: 'Diagonal bouncer. Moves diagonally, bounces off edges, and explodes when near the hero!'
	}, {
		asset: 'enemyX',
		name: 'Boss Enemy X',
		desc: 'Boss enemy. Appears after 250 score or in Boss Mode. Very tough!'
	}, {
		asset: 'EnemyZ',
		name: 'Boss Enemy Z',
		desc: 'Boss enemy. Zig-zags, shoots double beams, and is very fast!'
	}];
	// Item types info for help menu
	var itemTypes = [{
		asset: 'healthPotion',
		name: 'Health Potion',
		desc: 'Restores 1 health. Pick up to heal. If at max health, does nothing.'
	}, {
		asset: 'shieldItem',
		name: 'Shield',
		desc: 'Grants a shield for 6 seconds if at max health. Absorbs one hit from enemies or bullets.'
	}, {
		asset: 'beamItem',
		name: 'Beam Powerup',
		desc: 'Enables triple-shot for a short time. Fires 3 bullets in a spread.'
	}];
	// --- CONTAINER FOR PAGE CONTENT ---
	var pageContent = new Container();
	helpMenuOverlay.addChild(pageContent);
	// --- RENDER PAGE FUNCTION ---
	function renderHelpPage() {
		// Remove all children from pageContent
		while (pageContent.children.length > 0) {
			pageContent.removeChild(pageContent.children[0]);
		}
		// Title
		helpTitle.setText(helpPage === 0 ? "HELP" : "ITEMS");
		// Layout: vertical list, left-aligned for both image and text
		var startY = 500;
		var spacingY = 340;
		var leftMargin = 220;
		var imageTextGap = 40;
		var data = helpPage === 0 ? enemyTypes : itemTypes;
		for (var i = 0; i < data.length; i++) {
			var et = data[i];
			// Image
			var img = LK.getAsset(et.asset, {
				anchorX: 0,
				anchorY: 0,
				x: leftMargin,
				y: startY + i * spacingY,
				width: et.asset === 'enemyX' ? 180 : 120,
				height: et.asset === 'enemyX' ? 180 : 120
			});
			pageContent.addChild(img);
			// Name
			var nameTxt = new Text2(et.name, {
				size: 80,
				fill: "#fff",
				fontWeight: "bold"
			});
			nameTxt.anchor.set(0, 0);
			nameTxt.x = leftMargin + (et.asset === 'enemyX' ? 180 : 120) + imageTextGap;
			nameTxt.y = startY + i * spacingY + 10;
			pageContent.addChild(nameTxt);
			// Description
			var descTxt = new Text2(et.desc, {
				size: 60,
				fill: "#fff",
				align: "left"
			});
			descTxt.anchor.set(0, 0);
			descTxt.x = leftMargin + (et.asset === 'enemyX' ? 180 : 120) + imageTextGap;
			descTxt.y = startY + i * spacingY + 100;
			pageContent.addChild(descTxt);
		}
	}
	renderHelpPage();
	// --- PAGE NAVIGATION BUTTONS ---
	// Place under the last description text
	// Compute button Y based on number of entries in current help page
	var numEntries = helpPage === 0 ? enemyTypes.length : itemTypes.length;
	var lastDescY = 500 + (numEntries - 1) * 340 + 100 + 120; // 100 for desc offset, 120 for some margin
	// Close button (centered, first so it's under others visually)
	var closeBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	closeBtnBg.width = 340;
	closeBtnBg.height = 140;
	closeBtnBg.alpha = 0.7;
	closeBtnBg.x = 2048 / 2;
	closeBtnBg.y = lastDescY;
	helpMenuOverlay.addChild(closeBtnBg);
	var closeBtn = new Text2("CLOSE", {
		size: 80,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	closeBtn.anchor.set(0.5, 0.5);
	closeBtn.x = 2048 / 2;
	closeBtn.y = lastDescY;
	helpMenuOverlay.addChild(closeBtn);
	// Items button (right)
	var nextBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	nextBtnBg.width = 340;
	nextBtnBg.height = 140;
	nextBtnBg.alpha = 0.7;
	nextBtnBg.x = 2048 / 2 + 400;
	nextBtnBg.y = lastDescY;
	helpMenuOverlay.addChild(nextBtnBg);
	var nextBtn = new Text2("ITEMS", {
		size: 60,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	nextBtn.anchor.set(0.5, 0.5);
	nextBtn.x = nextBtnBg.x;
	nextBtn.y = nextBtnBg.y;
	helpMenuOverlay.addChild(nextBtn);
	// Enemies button (left)
	var prevBtnBg = LK.getAsset('Button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	prevBtnBg.width = 340;
	prevBtnBg.height = 140;
	prevBtnBg.alpha = 0.7;
	prevBtnBg.x = 2048 / 2 - 400;
	prevBtnBg.y = lastDescY;
	helpMenuOverlay.addChild(prevBtnBg);
	var prevBtn = new Text2("ENEMIES", {
		size: 60,
		fill: 0x00EAFF,
		fontWeight: "bold"
	});
	prevBtn.anchor.set(0.5, 0.5);
	prevBtn.x = prevBtnBg.x;
	prevBtn.y = prevBtnBg.y;
	helpMenuOverlay.addChild(prevBtn);
	// Dismiss help menu on close button press, and handle page navigation
	helpMenuOverlay.down = function (x, y, obj) {
		// Close
		var dx = x - closeBtn.x;
		var dy = y - closeBtn.y;
		if (Math.abs(dx) <= closeBtnBg.width / 2 && Math.abs(dy) <= closeBtnBg.height / 2) {
			helpMenuOverlay.visible = false;
			return;
		}
		// Prev (ENEMIES)
		var pdx = x - prevBtn.x;
		var pdy = y - prevBtn.y;
		if (Math.abs(pdx) <= prevBtnBg.width / 2 && Math.abs(pdy) <= prevBtnBg.height / 2) {
			if (helpPage !== 0) {
				helpPage = 0;
				renderHelpPage();
			}
			return;
		}
		// Next (ITEMS)
		var ndx = x - nextBtn.x;
		var ndy = y - nextBtn.y;
		if (Math.abs(ndx) <= nextBtnBg.width / 2 && Math.abs(ndy) <= nextBtnBg.height / 2) {
			if (helpPage !== 1) {
				helpPage = 1;
				renderHelpPage();
			}
			return;
		}
	};
	game.addChild(helpMenuOverlay);
}
// Menu state
var menuActive = true;
// Play button interaction
menuOverlay.down = function (x, y, obj) {
	// Check if play button was pressed - show mode selection
	var dx = x - playBtn.x;
	var dy = y - playBtn.y;
	if (Math.abs(dx) <= playBtnBg.width / 2 && Math.abs(dy) <= playBtnBg.height / 2) {
		// Show mode selection menu
		showModeSelection();
		return;
	}
	// Check if music button was pressed
	var mdx = x - musicBtn.x;
	var mdy = y - musicBtn.y;
	if (Math.abs(mdx) <= musicBtnBg.width / 2 && Math.abs(mdy) <= musicBtnBg.height / 2) {
		musicOn = !musicOn;
		if (musicOn) {
			musicBtn.setText("MUSIC: ON");
			LK.playMusic('Menu');
		} else {
			musicBtn.setText("MUSIC: OFF");
			LK.stopMusic();
		}
		return;
	}
	// Check if help button was pressed
	if (typeof helpBtn !== "undefined" && typeof helpBtnBg !== "undefined") {
		var hdx = x - helpBtn.x;
		var hdy = y - helpBtn.y;
		if (Math.abs(hdx) <= helpBtnBg.width / 2 && Math.abs(hdy) <= helpBtnBg.height / 2) {
			// Show help popup (custom help menu)
			showHelpMenu();
			return;
		}
	}
};
menuOverlay.move = function (x, y, obj) {};
menuOverlay.up = function (x, y, obj) {};
// Score display
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Health bar UI (horizontal, left bottom)
var maxHealth = 6;
var heroHealth = maxHealth;
var healthBarBg = LK.getAsset('enemy2', {
	anchorX: 0,
	// left edge
	anchorY: 1,
	// bottom edge
	tint: 0x222222
});
healthBarBg.width = 420;
healthBarBg.height = 60;
healthBarBg.alpha = 0.45;
// Place at left bottom, with margin (60px from left, 60px from bottom)
healthBarBg.x = 60;
healthBarBg.y = 2732 - 60;
healthBarBg.visible = false; // Hide in menu
LK.gui.bottomLeft.addChild(healthBarBg);
var healthBar = LK.getAsset('enemy1', {
	anchorX: 0,
	// left edge
	anchorY: 1,
	// bottom edge
	tint: 0xff4444
});
healthBar.width = 420;
healthBar.height = 60;
healthBar.alpha = 0.85;
healthBar.x = 60;
healthBar.y = 2732 - 60;
healthBar.visible = false; // Hide in menu
LK.gui.bottomLeft.addChild(healthBar);
// --- Health bar squares (vertical, left bottom) ---
var healthBarVSquares = [];
var squareSpacing = 12;
var squareSize = 60;
var baseX = 60;
var baseY = 2732 - 60;
for (var i = 0; i < maxHealth; i++) {
	var square = LK.getAsset('Healthbar', {
		anchorX: 0,
		anchorY: 1,
		x: baseX + i * (squareSize + squareSpacing),
		y: baseY,
		width: squareSize,
		height: squareSize,
		tint: 0x44ff44
	});
	square.visible = false; // Hide in menu
	LK.gui.bottomLeft.addChild(square);
	healthBarVSquares.push(square);
}
function updateHealthBar() {
	// Horizontal bar (left)
	healthBar.width = 420 * (heroHealth / maxHealth);
	if (heroHealth <= 2) {
		healthBar.tint = 0xff2222;
	} else if (heroHealth <= 4) {
		healthBar.tint = 0xffbb22;
	} else {
		healthBar.tint = 0x44ff44;
	}
	// Vertical bar (center) - show/hide squares and tint by health
	for (var i = 0; i < healthBarVSquares.length; i++) {
		if (i < heroHealth) {
			healthBarVSquares[i].visible = true;
			// Tint by health: green if >4, yellow if 3-4, red if 1-2
			if (heroHealth <= 2) {
				healthBarVSquares[i].tint = 0xff2222;
			} else if (heroHealth <= 4) {
				healthBarVSquares[i].tint = 0xffbb22;
			} else {
				healthBarVSquares[i].tint = 0x44ff44;
			}
			// Add a white border highlight if health is full
			healthBarVSquares[i].alpha = heroHealth === maxHealth ? 1.0 : 0.95;
		} else {
			healthBarVSquares[i].visible = false;
		}
	}
}
updateDemoHealthSquares && updateDemoHealthSquares();
// Custom nickname prompt overlay for score mode game over
function showNicknamePrompt(callback) {
	// Prevent multiple prompts
	if (game.nicknamePromptOverlay && game.nicknamePromptOverlay.visible) return;
	var overlay = new Container();
	overlay.zIndex = 99999;
	// Semi-transparent background
	var bg = LK.getAsset('Menu', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	bg.width = 2048;
	bg.height = 2732;
	bg.alpha = 0.92;
	overlay.addChild(bg);
	// Title
	var title = new Text2("GAME OVER!", {
		size: 120,
		fill: "#fff",
		fontWeight: "bold"
	});
	title.anchor.set(0.5, 0);
	title.x = 2048 / 2;
	title.y = 400;
	overlay.addChild(title);
	// Prompt text
	var prompt = new Text2("Enter your nickname:", {
		size: 80,
		fill: "#fff"
	});
	prompt.anchor.set(0.5, 0);
	prompt.x = 2048 / 2;
	prompt.y = 600;
	overlay.addChild(prompt);
	// Nickname input (simulate with text and +/- buttons)
	var nickname = "";
	var maxLen = 12;
	var nicknameText = new Text2("_", {
		size: 100,
		fill: 0x00EAFF
	});
	nicknameText.anchor.set(0.5, 0.5);
	nicknameText.x = 2048 / 2;
	nicknameText.y = 800;
	overlay.addChild(nicknameText);
	// On-screen keyboard (QWERTY layout: 3 rows + 1 row for numbers, backspace, OK)
	var qwertyRows = [["Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P"], ["A", "S", "D", "F", "G", "H", "J", "K", "L"], ["Z", "X", "C", "V", "B", "N", "M"], ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"], ["<", "OK"]];
	var keyButtons = [];
	var keySize = 120;
	var keySpacing = 18;
	var startY = 1000;
	for (var row = 0; row < qwertyRows.length; row++) {
		var keysInRow = qwertyRows[row];
		// Calculate row width for centering
		var rowWidth = keysInRow.length * keySize + (keysInRow.length - 1) * keySpacing;
		var startX = 2048 / 2 - rowWidth / 2 + keySize / 2;
		var y = startY + row * (keySize + keySpacing);
		for (var col = 0; col < keysInRow.length; col++) {
			var key = keysInRow[col];
			var keyBg = LK.getAsset('Button', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			keyBg.width = keySize;
			keyBg.height = keySize;
			keyBg.alpha = 0.7;
			keyBg.x = startX + col * (keySize + keySpacing);
			keyBg.y = y;
			overlay.addChild(keyBg);
			var keyTxt = new Text2(key, {
				size: 60,
				fill: "#fff",
				fontWeight: "bold"
			});
			keyTxt.anchor.set(0.5, 0.5);
			keyTxt.x = keyBg.x;
			keyTxt.y = keyBg.y;
			overlay.addChild(keyTxt);
			keyButtons.push({
				bg: keyBg,
				txt: keyTxt,
				key: key
			});
		}
	}
	// Button interaction
	overlay.down = function (x, y, obj) {
		for (var i = 0; i < keyButtons.length; i++) {
			var btn = keyButtons[i];
			var dx = x - btn.bg.x;
			var dy = y - btn.bg.y;
			if (Math.abs(dx) <= btn.bg.width / 2 && Math.abs(dy) <= btn.bg.height / 2) {
				if (btn.key === "OK") {
					// Accept nickname
					// Stop scoremode music and play gameover music if in score mode
					if (scoreMode) {
						LK.stopMusic();
						if (musicOn) {
							LK.playMusic('Gameover');
						}
					}
					overlay.visible = false;
					if (typeof callback === "function") callback(nickname.length > 0 ? nickname : "Player");
					if (game.nicknamePromptOverlay) {
						game.removeChild(game.nicknamePromptOverlay);
						game.nicknamePromptOverlay = null;
					}
					return;
				} else if (btn.key === "<") {
					// Backspace
					if (nickname.length > 0) {
						nickname = nickname.substring(0, nickname.length - 1);
						nicknameText.setText(nickname.length > 0 ? nickname : "_");
					}
				} else {
					// Add character
					if (nickname.length < maxLen) {
						nickname += btn.key;
						nicknameText.setText(nickname);
					}
				}
				break;
			}
		}
	};
	// Add overlay to game and track
	game.addChild(overlay);
	game.nicknamePromptOverlay = overlay;
}
// Game variables
var hero = new Hero();
game.addChild(hero);
hero.x = 2048 / 2;
hero.y = 2732 - 350;
hero.visible = false; // Hide in menu
// Game speed controller (only visible in god mode)
var gameSpeed = 1.0; // Default speed multiplier
var speedControllerVisible = false;
// Speed controller UI elements - positioned on left side and made vertical
var speedControllerBg = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
speedControllerBg.width = 180;
speedControllerBg.height = 600;
speedControllerBg.alpha = 0.8;
speedControllerBg.x = 200;
speedControllerBg.y = 500;
speedControllerBg.visible = false;
game.addChild(speedControllerBg);
var speedControllerLabel = new Text2("1.0x", {
	size: 90,
	fill: "#fff",
	fontWeight: "bold"
});
speedControllerLabel.anchor.set(0.5, 0.5);
speedControllerLabel.x = 200;
speedControllerLabel.y = 450;
speedControllerLabel.visible = false;
game.addChild(speedControllerLabel);
// Speed decrease button
var speedDecreaseBtn = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
speedDecreaseBtn.width = 120;
speedDecreaseBtn.height = 120;
speedDecreaseBtn.alpha = 0.7;
speedDecreaseBtn.x = 200;
speedDecreaseBtn.y = 500 + 180;
speedDecreaseBtn.visible = false;
game.addChild(speedDecreaseBtn);
var speedDecreaseTxt = new Text2("-", {
	size: 120,
	fill: "#fff",
	fontWeight: "bold"
});
speedDecreaseTxt.anchor.set(0.5, 0.5);
speedDecreaseTxt.x = speedDecreaseBtn.x;
speedDecreaseTxt.y = speedDecreaseBtn.y;
speedDecreaseTxt.visible = false;
game.addChild(speedDecreaseTxt);
// Speed increase button
var speedIncreaseBtn = LK.getAsset('Button', {
	anchorX: 0.5,
	anchorY: 0.5
});
speedIncreaseBtn.width = 120;
speedIncreaseBtn.height = 120;
speedIncreaseBtn.alpha = 0.7;
speedIncreaseBtn.x = 200;
speedIncreaseBtn.y = 500 - 180;
speedIncreaseBtn.visible = false;
game.addChild(speedIncreaseBtn);
var speedIncreaseTxt = new Text2("+", {
	size: 120,
	fill: "#fff",
	fontWeight: "bold"
});
speedIncreaseTxt.anchor.set(0.5, 0.5);
speedIncreaseTxt.x = speedIncreaseBtn.x;
speedIncreaseTxt.y = speedIncreaseBtn.y;
speedIncreaseTxt.visible = false;
game.addChild(speedIncreaseTxt);
// Function to update speed controller display
function updateSpeedController() {
	var visible = godMode && !menuActive;
	speedControllerBg.visible = visible;
	speedControllerLabel.visible = visible;
	speedDecreaseBtn.visible = visible;
	speedDecreaseTxt.visible = visible;
	speedIncreaseBtn.visible = visible;
	speedIncreaseTxt.visible = visible;
	if (visible) {
		speedControllerLabel.setText(gameSpeed.toFixed(1) + "x");
	}
}
// Track if EnemyX has spawned
var enemyXSpawned = false;
var enemyZSpawned = false; // Track if EnemyZ is present in boss mode
// Track if EnemyX has been killed after 250 score (not in boss mode)
var enemyXKilledAfter250 = false;
// Ulti button UI and state
var ultiReady = true;
var ultiCooldown = 0;
var ultiCooldownMax = 1200; // 20 seconds at 60fps
// Create ulti button
var ultiBtn = new Text2("ULTI", {
	size: 120,
	fill: 0x00EAFF,
	fontWeight: "bold"
});
ultiBtn.anchor.set(0.5, 0.5);
// Place in right corner, leaving margin for touch and not overlapping top menu
ultiBtn.x = 2048 - 180;
ultiBtn.y = 2732 - 180;
ultiBtn.bg = LK.getAsset('enemy2', {
	anchorX: 0.5,
	anchorY: 0.5,
	tint: 0x00eaff
});
ultiBtn.bg.width = 340;
ultiBtn.bg.height = 220;
ultiBtn.bg.alpha = 0.25;
ultiBtn.bg.x = ultiBtn.x;
ultiBtn.bg.y = ultiBtn.y;
ultiBtn.bg.visible = false; // Hide in menu
game.addChild(ultiBtn.bg);
ultiBtn.visible = false; // Hide in menu
game.addChild(ultiBtn);
// Ulti button cooldown overlay
var ultiBtnOverlay = LK.getAsset('enemy2', {
	anchorX: 0.5,
	anchorY: 0.5,
	tint: 0x222222
});
ultiBtnOverlay.width = 340;
ultiBtnOverlay.height = 220;
ultiBtnOverlay.alpha = 0.55;
ultiBtnOverlay.x = ultiBtn.x;
ultiBtnOverlay.y = ultiBtn.y;
ultiBtnOverlay.visible = false;
game.addChild(ultiBtnOverlay);
// Laser Cannon state (no button UI)
var laserReady = true;
var laserCooldown = 0;
var laserCooldownMax = 720; // 12 seconds at 60fps
// Armor visual overlay for shield
var heroArmor = LK.getAsset('enemy2', {
	anchorX: 0.5,
	anchorY: 0.5,
	tint: 0x80eaff // light blue
});
heroArmor.width = hero.width * 1.35;
heroArmor.height = hero.height * 1.35;
heroArmor.alpha = 0.55;
heroArmor.visible = false;
game.addChild(heroArmor);
var heroBullets = [];
var enemies = [];
var enemyBullets = [];
var items = [];
var dragNode = null;
var lastHeroIntersecting = false;
var score = 0;
var spawnTick = 0;
var enemyShootTick = 0;
// Powerup state
var shieldActive = false;
var shieldTimer = 0;
var beamActive = false;
var beamTimer = 0;
// Helper: spawn item
function spawnItem() {
	var itemType = Math.random() < 0.5 ? "shield" : "beam";
	var item;
	if (itemType === "shield") {
		item = new ShieldItem();
	} else {
		item = new BeamItem();
	}
	item.x = 200 + Math.random() * (2048 - 400);
	item.y = -80;
	items.push(item);
	game.addChild(item);
}
// Helper: spawn enemy
function spawnEnemy() {
	// 10% Enemy4 (now allowed in score mode at any score), 20% Enemy3, 35% Enemy1, 35% Enemy2
	var rand = Math.random();
	var enemy;
	// Always allow Enemy4 to spawn from score 0 in score mode (10% chance)
	if (rand < 0.35) {
		enemy = new Enemy1();
		enemy.x = 200 + Math.random() * (2048 - 400);
		enemy.y = -80;
	} else if (rand < 0.7) {
		enemy = new Enemy2();
		enemy.baseX = 200 + Math.random() * (2048 - 400);
		enemy.x = enemy.baseX;
		enemy.y = -80;
		enemy.t = Math.random() * 2;
	} else if (rand < 0.9) {
		enemy = new Enemy3();
		enemy.x = 200 + Math.random() * (2048 - 400);
		enemy.y = -80;
	} else {
		// Enemy4 can spawn at any score, including score mode from 0
		enemy = new Enemy4();
		enemy.x = 200 + Math.random() * (2048 - 400);
		enemy.y = -80;
	}
	enemies.push(enemy);
	game.addChild(enemy);
}
// Helper: spawn enemy bullet
function spawnEnemyBullet(enemy, targetX, targetY) {
	var bullet = new EnemyBullet();
	bullet.x = enemy.x;
	bullet.y = enemy.y + 60;
	// Aim at hero
	var dx = targetX - bullet.x;
	var dy = targetY - bullet.y;
	var len = Math.sqrt(dx * dx + dy * dy);
	if (len > 0) {
		bullet.speedX = dx / len * 18;
		bullet.speedY = dy / len * 18;
	}
	enemyBullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('enemyShoot').play();
}
// Move handler for dragging hero
function handleMove(x, y, obj) {
	// Always follow mouse if not dragging and not in menu
	if (!dragNode && !(typeof menuActive !== "undefined" && menuActive)) {
		// Clamp hero inside screen
		var hw = hero.width / 2;
		var hh = hero.height / 2;
		var nx = Math.max(hw, Math.min(2048 - hw, x));
		var ny = Math.max(hh + 100, Math.min(2732 - hh, y));
		hero.x = nx;
		hero.y = ny;
		return;
	}
	if (dragNode) {
		// Clamp hero inside screen
		var hw = dragNode.width / 2;
		var hh = dragNode.height / 2;
		var nx = Math.max(hw, Math.min(2048 - hw, x));
		var ny = Math.max(hh + 100, Math.min(2732 - hh, y));
		dragNode.x = nx;
		dragNode.y = ny;
	}
}
// --- Make hero follow mouse automatically at game start (PC only) ---
if (typeof window !== "undefined" && window.addEventListener) {
	window.addEventListener("mousemove", function (evt) {
		// Only follow if not in menu and not dragging
		if (typeof menuActive !== "undefined" && menuActive) {
			return;
		}
		if (dragNode) {
			return;
		}
		// Get bounding rect of canvas
		var canvas = LK.getCanvas ? LK.getCanvas() : document.querySelector("canvas") || null;
		if (!canvas) {
			return;
		}
		var rect = canvas.getBoundingClientRect();
		// Convert mouse coordinates to game coordinates
		var scaleX = 2048 / rect.width;
		var scaleY = 2732 / rect.height;
		var x = (evt.clientX - rect.left) * scaleX;
		var y = (evt.clientY - rect.top) * scaleY;
		handleMove(x, y, {
			event: evt
		});
	});
}
// Touch down: start dragging hero
game.down = function (x, y, obj) {
	if (typeof menuActive !== "undefined" && menuActive) {
		return;
	}
	// PC: left mouse click triggers laser cannon if ready and not on menu
	if (obj && obj.event && obj.event.type === "mousedown" && obj.event.button === 0 && laserReady) {
		// Only fire if click is inside hero sprite (circle)
		var dx = x - hero.x;
		var dy = y - hero.y;
		if (dx * dx + dy * dy <= hero.radius * hero.radius) {
			// Activate laser
			laserReady = false;
			laserCooldown = laserCooldownMax;
			// Laser effect: fire a vertical laser column at hero.x
			var laserX = hero.x;
			// Visual effect: draw a vertical beam for a short time, and make it follow the hero
			var laserBeam = LK.getAsset('heroBullet', {
				anchorX: 0.5,
				anchorY: 1,
				x: laserX,
				y: hero.y - hero.height / 2
			});
			laserBeam.width = 80;
			laserBeam.height = hero.y - hero.height / 2; // from hero to top
			laserBeam.alpha = 0.45;
			game.addChild(laserBeam);
			// Store reference to active laser beam and set timer
			game.activeLaserBeam = laserBeam;
			game.activeLaserBeamTimer = 90; // 1.5 seconds at 60fps
			LK.getSound('laser').play();
			// Destroy all enemies and enemy bullets in the column
			for (var i = enemies.length - 1; i >= 0; i--) {
				var e = enemies[i];
				if (Math.abs(e.x - laserX) <= 80) {
					// Laser cannon does NOT affect EnemyX or EnemyZ (bosses)
					if (e instanceof EnemyX || e instanceof EnemyZ) {
						// Flash to show hit, but do not damage or destroy
						LK.effects.flashObject(e, 0xff0000, 120);
						continue;
					}
					LK.effects.flashObject(e, 0xffffff, 200);
					for (var pi = 0; pi < 12; pi++) {
						var part = LK.getAsset(e instanceof Enemy1 ? 'enemy1' : e instanceof Enemy2 ? 'enemy2' : 'enemy3', {
							anchorX: 0.5,
							anchorY: 0.5
						});
						part.x = e.x;
						part.y = e.y;
						part.width = 20 + Math.random() * 20;
						part.height = 20 + Math.random() * 20;
						part.alpha = 0.7 + Math.random() * 0.3;
						var angle = Math.PI * 2 * (pi / 12) + Math.random() * 0.2;
						var speed = 10 + Math.random() * 10;
						var vx = Math.cos(angle) * speed;
						var vy = Math.sin(angle) * speed;
						part.life = 10 + Math.floor(Math.random() * 10);
						part.update = function () {
							this.x += vx;
							this.y += vy;
							this.life--;
							this.alpha *= 0.88 + Math.random() * 0.06;
							if (this.life <= 0) {
								this.destroy();
							}
						};
						game.addChild(part);
					}
					// 35% chance to drop a health potion if Enemy3
					if (e instanceof Enemy3 && Math.random() < 0.35) {
						var healthPotion = new HealthPotion();
						healthPotion.x = e.x;
						healthPotion.y = e.y;
						items.push(healthPotion);
						game.addChild(healthPotion);
					}
					e.destroy();
					enemies.splice(i, 1);
				}
			}
			for (var i = enemyBullets.length - 1; i >= 0; i--) {
				var b = enemyBullets[i];
				if (Math.abs(b.x - laserX) <= 80) {
					b.destroy();
					enemyBullets.splice(i, 1);
				}
			}
			return;
		}
	}
	dragNode = hero;
	handleMove(x, y, obj);
};
// Touch up: stop dragging
game.up = function (x, y, obj) {
	if (typeof menuActive !== "undefined" && menuActive) {
		return;
	}
	dragNode = null;
};
// Touch move: move hero
game.move = function (x, y, obj) {
	if (typeof menuActive !== "undefined" && menuActive) {
		return;
	}
	// Handle speed controller interactions (only in god mode)
	if (godMode && !menuActive) {
		// Speed decrease button
		var dx = x - speedDecreaseBtn.x;
		var dy = y - speedDecreaseBtn.y;
		if (Math.abs(dx) <= speedDecreaseBtn.width / 2 && Math.abs(dy) <= speedDecreaseBtn.height / 2) {
			gameSpeed = Math.max(0.1, gameSpeed - 0.1);
			updateSpeedController();
			return;
		}
		// Speed increase button
		var idx = x - speedIncreaseBtn.x;
		var idy = y - speedIncreaseBtn.y;
		if (Math.abs(idx) <= speedIncreaseBtn.width / 2 && Math.abs(idy) <= speedIncreaseBtn.height / 2) {
			gameSpeed = Math.min(3.0, gameSpeed + 0.1);
			updateSpeedController();
			return;
		}
	}
	handleMove(x, y, obj);
	// Handle ulti button press (touch/click)
	if (ultiReady) {
		// Check if touch is inside ulti button area
		var dx = x - ultiBtn.x;
		var dy = y - ultiBtn.y;
		if (Math.abs(dx) <= ultiBtn.bg.width / 2 && Math.abs(dy) <= ultiBtn.bg.height / 2) {
			// Activate ulti
			ultiReady = false;
			ultiCooldown = ultiCooldownMax;
			ultiBtnOverlay.visible = true;
			// Play ulti sound
			LK.getSound('Ulti').play();
			// Ulti effect: clear all enemies and enemy bullets
			for (var i = enemies.length - 1; i >= 0; i--) {
				var e = enemies[i];
				if (e instanceof EnemyX) {
					// Ulti is ineffective if EnemyX has under 50 health
					if (e.hp < 50) {
						// Flash to show ulti hit but no damage
						LK.effects.flashObject(e, 0xff0000, 120);
						continue;
					}
					// Ulti does 50 damage to EnemyX in both boss mode and normal mode
					e.hp -= 50;
					LK.effects.flashObject(e, 0xffffff, 400);
					if (e.hp <= 0) {
						// Play death animation for EnemyX
						var enemyToDestroy = e;
						for (var pi = 0; pi < 48; pi++) {
							var part = LK.getAsset('enemyX', {
								anchorX: 0.5,
								anchorY: 0.5
							});
							part.x = enemyToDestroy.x;
							part.y = enemyToDestroy.y;
							part.width = 48 + Math.random() * 48;
							part.height = 48 + Math.random() * 48;
							part.alpha = 0.8 + Math.random() * 0.2;
							var angle = Math.PI * 2 * (pi / 48) + Math.random() * 0.2;
							var speed = 24 + Math.random() * 16;
							var vx = Math.cos(angle) * speed;
							var vy = Math.sin(angle) * speed;
							part.life = 32 + Math.floor(Math.random() * 32);
							part.update = function () {
								this.x += vx;
								this.y += vy;
								this.life--;
								this.alpha *= 0.90 + Math.random() * 0.04;
								if (this.life <= 0) {
									this.destroy();
								}
							};
							game.addChild(part);
						}
						// Add score for killing EnemyX with ulti
						score += 1;
						scoreTxt.setText(score);
						// Drop 3 health potions when EnemyX is killed by ulti
						for (var hp = 0; hp < 3; hp++) {
							var healthPotion = new HealthPotion();
							healthPotion.x = enemyToDestroy.x - 60 + 60 * hp;
							healthPotion.y = enemyToDestroy.y;
							items.push(healthPotion);
							game.addChild(healthPotion);
						}
						enemyToDestroy.destroy();
						enemies.splice(i, 1);
					}
				} else if (e instanceof EnemyZ) {
					// Ulti is ineffective if EnemyZ has under 50 health
					if (e.hp < 50) {
						// Flash to show ulti hit but no damage
						LK.effects.flashObject(e, 0xff0000, 120);
						continue;
					}
					// Ulti does 50 damage to EnemyZ in both boss mode and normal mode
					e.hp -= 50;
					LK.effects.flashObject(e, 0xffffff, 400);
					if (e.hp <= 0) {
						// Play death animation for EnemyZ
						var enemyToDestroy = e;
						for (var pi = 0; pi < 48; pi++) {
							var part = LK.getAsset('EnemyZ', {
								anchorX: 0.5,
								anchorY: 0.5
							});
							part.x = enemyToDestroy.x;
							part.y = enemyToDestroy.y;
							part.width = 48 + Math.random() * 48;
							part.height = 48 + Math.random() * 48;
							part.alpha = 0.8 + Math.random() * 0.2;
							var angle = Math.PI * 2 * (pi / 48) + Math.random() * 0.2;
							var speed = 24 + Math.random() * 16;
							var vx = Math.cos(angle) * speed;
							var vy = Math.sin(angle) * speed;
							part.life = 32 + Math.floor(Math.random() * 32);
							part.update = function () {
								this.x += vx;
								this.y += vy;
								this.life--;
								this.alpha *= 0.90 + Math.random() * 0.04;
								if (this.life <= 0) {
									this.destroy();
								}
							};
							game.addChild(part);
						}
						// Add score for killing EnemyZ with ulti
						score += 1;
						scoreTxt.setText(score);
						// Drop 3 health potions when EnemyZ is killed by ulti
						for (var hp = 0; hp < 3; hp++) {
							var healthPotion = new HealthPotion();
							healthPotion.x = enemyToDestroy.x - 60 + 60 * hp;
							healthPotion.y = enemyToDestroy.y;
							items.push(healthPotion);
							game.addChild(healthPotion);
						}
						enemyToDestroy.destroy();
						enemies.splice(i, 1);
					}
				} else {
					// Add score for killing normal enemies with ulti
					score += 1;
					scoreTxt.setText(score);
					enemies[i].destroy();
					enemies.splice(i, 1);
				}
			}
			for (var i = enemyBullets.length - 1; i >= 0; i--) {
				enemyBullets[i].destroy();
				enemyBullets.splice(i, 1);
			}
			LK.effects.flashScreen(0x00eaff, 600);
			return;
		}
	}
	// Handle laser cannon activation by clicking on the hero
	if (laserReady) {
		var dx = x - hero.x;
		var dy = y - hero.y;
		// Check if touch/click is inside hero sprite (circle)
		if (dx * dx + dy * dy <= hero.radius * hero.radius) {
			// Activate laser
			laserReady = false;
			laserCooldown = laserCooldownMax;
			// Laser effect: fire a vertical laser column at hero.x
			var laserX = hero.x;
			// Visual effect: draw a vertical beam for a short time, and make it follow the hero
			var laserBeam = LK.getAsset('heroBullet', {
				anchorX: 0.5,
				anchorY: 1,
				//{37}  // anchor at bottom
				x: laserX,
				y: hero.y - hero.height / 2
			});
			laserBeam.width = 80;
			laserBeam.height = hero.y - hero.height / 2; // from hero to top
			laserBeam.alpha = 0.45;
			game.addChild(laserBeam);
			// Store reference to active laser beam and set timer
			game.activeLaserBeam = laserBeam;
			game.activeLaserBeamTimer = 90; // 1.5 seconds at 60fps
			LK.getSound('laser').play();
			// Destroy all enemies and enemy bullets in the column
			for (var i = enemies.length - 1; i >= 0; i--) {
				var e = enemies[i];
				if (Math.abs(e.x - laserX) <= 80) {
					// Laser cannon does NOT affect EnemyX or EnemyZ (bosses)
					if (e instanceof EnemyX || e instanceof EnemyZ) {
						// Flash to show hit, but do not damage or destroy
						LK.effects.flashObject(e, 0xff0000, 120);
						continue;
					}
					// Play death animation for each
					LK.effects.flashObject(e, 0xffffff, 200);
					// Particle effect for each
					for (var pi = 0; pi < 12; pi++) {
						var part = LK.getAsset(e instanceof Enemy1 ? 'enemy1' : e instanceof Enemy2 ? 'enemy2' : 'enemy3', {
							anchorX: 0.5,
							anchorY: 0.5
						});
						part.x = e.x;
						part.y = e.y;
						part.width = 20 + Math.random() * 20;
						part.height = 20 + Math.random() * 20;
						part.alpha = 0.7 + Math.random() * 0.3;
						var angle = Math.PI * 2 * (pi / 12) + Math.random() * 0.2;
						var speed = 10 + Math.random() * 10;
						var vx = Math.cos(angle) * speed;
						var vy = Math.sin(angle) * speed;
						part.life = 10 + Math.floor(Math.random() * 10);
						part.update = function () {
							this.x += vx;
							this.y += vy;
							this.life--;
							this.alpha *= 0.88 + Math.random() * 0.06;
							if (this.life <= 0) {
								this.destroy();
							}
						};
						game.addChild(part);
					}
					// 35% chance to drop a health potion if Enemy3
					if (e instanceof Enemy3 && Math.random() < 0.35) {
						var healthPotion = new HealthPotion();
						healthPotion.x = e.x;
						healthPotion.y = e.y;
						items.push(healthPotion);
						game.addChild(healthPotion);
					}
					e.destroy();
					enemies.splice(i, 1);
				}
			}
			for (var i = enemyBullets.length - 1; i >= 0; i--) {
				var b = enemyBullets[i];
				if (Math.abs(b.x - laserX) <= 80) {
					b.destroy();
					enemyBullets.splice(i, 1);
				}
			}
			return;
		}
	}
};
// Main game update
game.update = function () {
	if (typeof menuActive !== "undefined" && menuActive) {
		// Block all game logic while menu is active
		return;
	}
	// Stop all game logic if gameover screen is shown in score mode
	if (scoreMode && game.nicknamePromptOverlay && game.nicknamePromptOverlay.visible) {
		return;
	}
	// Update speed controller visibility
	updateSpeedController();
	// Apply game speed multiplier to all timed operations
	var speedMultiplier = gameSpeed;
	// Update hero
	hero.update();
	// Laser beam follow logic
	if (game.activeLaserBeam) {
		// Move the beam to follow the hero's x and y, and always stretch from hero to top
		game.activeLaserBeam.x = hero.x;
		game.activeLaserBeam.y = hero.y - hero.height / 2;
		game.activeLaserBeam.height = hero.y - hero.height / 2;
		// Laser beam hits enemies it touches
		for (var i = enemies.length - 1; i >= 0; i--) {
			var e = enemies[i];
			// Check if enemy is within the laser beam's column (80px wide, same as beam)
			if (e.y + (e.height ? e.height / 2 : 60) >= 0 &&
			// enemy is not above top
			e.y - (e.height ? e.height / 2 : 60) <= hero.y - hero.height / 2 &&
			// enemy is not below beam bottom
			Math.abs(e.x - game.activeLaserBeam.x) <= game.activeLaserBeam.width / 2) {
				// Laser cannon does NOT affect EnemyX or EnemyZ (bosses)
				if (e instanceof EnemyX || e instanceof EnemyZ) {
					// Flash to show hit, but do not damage or destroy
					LK.effects.flashObject(e, 0xff0000, 120);
					continue;
				}
				// Play hit sound and flash
				LK.getSound('enemyHit').play();
				LK.effects.flashObject(e, 0xffffff, 200);
				// Score and handle Enemy3 HP
				score += 1;
				scoreTxt.setText(score);
				if (e instanceof Enemy3) {
					e.hp--;
					if (e.hp <= 0) {
						// Play death animation before destroying Enemy3
						var enemyToDestroy = e;
						for (var pi = 0; pi < 24; pi++) {
							var part = LK.getAsset('enemy3', {
								anchorX: 0.5,
								anchorY: 0.5
							});
							part.x = enemyToDestroy.x;
							part.y = enemyToDestroy.y;
							part.width = 32 + Math.random() * 32;
							part.height = 32 + Math.random() * 32;
							part.alpha = 0.8 + Math.random() * 0.2;
							var angle = Math.PI * 2 * (pi / 24) + Math.random() * 0.2;
							var speed = 16 + Math.random() * 12;
							var vx = Math.cos(angle) * speed;
							var vy = Math.sin(angle) * speed;
							part.life = 16 + Math.floor(Math.random() * 16);
							part.update = function () {
								this.x += vx;
								this.y += vy;
								this.life--;
								this.alpha *= 0.90 + Math.random() * 0.04;
								if (this.life <= 0) {
									this.destroy();
								}
							};
							game.addChild(part);
						}
						// 35% chance to drop a health potion when Enemy3 is killed
						if (Math.random() < 0.35) {
							var healthPotion = new HealthPotion();
							healthPotion.x = enemyToDestroy.x;
							healthPotion.y = enemyToDestroy.y;
							items.push(healthPotion);
							game.addChild(healthPotion);
						}
						enemyToDestroy.destroy();
						enemies.splice(i, 1);
					} else {
						// Flash for hit, but don't destroy
						LK.effects.flashObject(e, 0x8e24aa, 120);
					}
				} else {
					// Play death animation before destroying normal enemies
					var enemyToDestroy = e;
					for (var pi = 0; pi < 16; pi++) {
						var part = LK.getAsset(enemyToDestroy instanceof Enemy1 ? 'enemy1' : 'enemy2', {
							anchorX: 0.5,
							anchorY: 0.5
						});
						part.x = enemyToDestroy.x;
						part.y = enemyToDestroy.y;
						part.width = 20 + Math.random() * 20;
						part.height = 20 + Math.random() * 20;
						part.alpha = 0.7 + Math.random() * 0.3;
						var angle = Math.PI * 2 * (pi / 16) + Math.random() * 0.2;
						var speed = 10 + Math.random() * 10;
						var vx = Math.cos(angle) * speed;
						var vy = Math.sin(angle) * speed;
						part.life = 10 + Math.floor(Math.random() * 10);
						part.update = function () {
							this.x += vx;
							this.y += vy;
							this.life--;
							this.alpha *= 0.88 + Math.random() * 0.06;
							if (this.life <= 0) {
								this.destroy();
							}
						};
						game.addChild(part);
					}
					enemyToDestroy.destroy();
					enemies.splice(i, 1);
				}
			}
		}
		// Decrement timer and destroy when done
		game.activeLaserBeamTimer--;
		if (game.activeLaserBeamTimer <= 0) {
			game.activeLaserBeam.destroy();
			game.activeLaserBeam = null;
		}
	}
	// Ulti cooldown logic
	if (godMode) {
		ultiReady = true;
		ultiCooldown = 0;
		ultiBtnOverlay.visible = false;
		ultiBtn.text = "ULTI";
	} else {
		if (!ultiReady) {
			ultiCooldown -= speedMultiplier;
			if (ultiCooldown <= 0) {
				ultiReady = true;
				ultiBtnOverlay.visible = false;
			} else {
				// Show overlay and update text to show seconds left
				ultiBtnOverlay.visible = true;
				ultiBtn.text = "ULTI\n" + Math.ceil(ultiCooldown / 60) + "s";
			}
		}
		if (ultiReady) {
			ultiBtn.text = "ULTI";
			ultiBtnOverlay.visible = false;
		}
	}
	// Update armor overlay position and visibility
	heroArmor.x = hero.x;
	heroArmor.y = hero.y;
	heroArmor.visible = shieldActive;
	// Laser cannon cooldown logic (no button UI)
	if (!laserReady) {
		laserCooldown -= speedMultiplier;
		if (laserCooldown <= 0) {
			laserReady = true;
		}
	}
	// Update shield/beam timers
	if (shieldActive) {
		shieldTimer -= speedMultiplier;
		if (shieldTimer <= 0) {
			shieldActive = false;
		}
	}
	if (beamActive) {
		beamTimer -= speedMultiplier;
		if (beamTimer <= 0) {
			beamActive = false;
		}
	}
	// Update items (powerups)
	for (var i = items.length - 1; i >= 0; i--) {
		var item = items[i];
		item.update();
		// Remove if off screen
		if (item.y > 2732 + 100) {
			item.destroy();
			items.splice(i, 1);
			continue;
		}
		// Pickup by hero
		if (item.intersects(hero)) {
			if (item instanceof HealthPotion) {
				// Health potion always gives 1 health (if not at max)
				if (heroHealth < maxHealth) {
					heroHealth = Math.min(maxHealth, heroHealth + 1);
					updateHealthBar();
					updateDemoHealthSquares && updateDemoHealthSquares();
					LK.effects.flashObject(hero, 0x44ff44, 400);
				}
			} else if (item instanceof ShieldItem) {
				// If already at max health, treat as shield
				if (heroHealth >= maxHealth) {
					shieldActive = true;
					shieldTimer = 360; // 6 seconds at 60fps
					LK.effects.flashObject(hero, 0x00ffff, 400);
				} else {
					// If not at max health, ignore shield pickup (health potions now handled separately)
				}
			} else if (item instanceof BeamItem) {
				beamActive = true;
				beamTimer = 180; // 3 seconds at 60fps
				LK.effects.flashObject(hero, 0xff00ff, 400);
			}
			item.destroy();
			items.splice(i, 1);
			continue;
		}
	}
	// Hero shooting (auto-fire)
	hero.shootCooldown -= speedMultiplier;
	if (hero.shootCooldown <= 0) {
		if (beamActive) {
			// Beam: fire 3 bullets in spread
			for (var bdir = -1; bdir <= 1; bdir++) {
				var bullet = new HeroBullet();
				bullet.x = hero.x + bdir * 40;
				bullet.y = hero.y - hero.height / 2 - 20;
				bullet.spread = bdir * 0.18; // radians
				bullet.update = function (origUpdate, spread) {
					return function () {
						this.y += this.speed;
						this.x += Math.sin(spread) * 18;
					};
				}(bullet.update, bullet.spread);
				heroBullets.push(bullet);
				game.addChild(bullet);
			}
			hero.shootCooldown = 6 / speedMultiplier;
			LK.getSound('laser').play();
		} else {
			var bullet = new HeroBullet();
			bullet.x = hero.x;
			bullet.y = hero.y - hero.height / 2 - 20;
			heroBullets.push(bullet);
			game.addChild(bullet);
			hero.shootCooldown = 10 / speedMultiplier;
			LK.getSound('laser').play();
		}
	}
	// Update hero bullets
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		var b = heroBullets[i];
		b.update();
		// Remove if off screen
		if (b.y < -60) {
			b.destroy();
			heroBullets.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var e = enemies[j];
			// In boss mode, if EnemyZ is killed, allow next boss to spawn
			if (typeof bossMode !== "undefined" && bossMode && e instanceof EnemyZ && e.hp <= 1 && b.intersects(e)) {
				enemyZSpawned = false;
				spawnTick = 0;
				bossNextToSpawn = "X"; // Always alternate to X after Z dies
			}
			if (b.intersects(e)) {
				// Enemy hit
				LK.getSound('enemyHit').play();
				score += 1;
				scoreTxt.setText(score);
				// Flash enemy
				LK.effects.flashObject(e, 0xffffff, 200);
				// Remove both or handle Enemy3/EnemyX/Enemy4/EnemyZ hp
				if (e instanceof Enemy3 || e instanceof EnemyX || e instanceof Enemy4 || e instanceof EnemyZ) {
					e.hp--;
					if (e.hp <= 0) {
						// Play death animation before destroying Enemy3/EnemyX/Enemy4/EnemyZ
						var enemyToDestroy = e;
						// --- Enemy4 explosion: visual effect and bullet burst when killed by hero (bullet, laser, shield, or ulti) ---
						if (e instanceof Enemy4) {
							// Flash explosion effect
							LK.effects.flashObject(enemyToDestroy, 0xffffff, 120);
							// Throw 4 bullets around
							if (typeof enemyBullets !== "undefined" && typeof game !== "undefined") {
								for (var bulletDir = 0; bulletDir < 4; bulletDir++) {
									var bullet = new EnemyBullet();
									bullet.x = enemyToDestroy.x;
									bullet.y = enemyToDestroy.y;
									// 4 directions: up, right, down, left (90 degrees apart)
									var angle = bulletDir * Math.PI / 2;
									var speed = 20;
									bullet.speedX = Math.cos(angle) * speed;
									bullet.speedY = Math.sin(angle) * speed;
									enemyBullets.push(bullet);
									game.addChild(bullet);
								}
								LK.getSound('enemyShoot').play();
							}
						}
						// Particle animation for Enemy3/EnemyX/Enemy4/EnemyZ death (more particles, richer effect)
						var particleCount = e instanceof EnemyX ? 48 : e instanceof Enemy3 ? 24 : e instanceof EnemyZ ? 48 : 16;
						var assetName = e instanceof EnemyX ? 'enemyX' : e instanceof Enemy3 ? 'enemy3' : e instanceof EnemyZ ? 'EnemyZ' : 'Enemy4';
						for (var pi = 0; pi < particleCount; pi++) {
							var part = LK.getAsset(assetName, {
								anchorX: 0.5,
								anchorY: 0.5
							});
							part.x = enemyToDestroy.x;
							part.y = enemyToDestroy.y;
							part.width = (e instanceof EnemyX ? 48 : e instanceof Enemy3 ? 32 : e instanceof EnemyZ ? 48 : 24) + Math.random() * (e instanceof EnemyX ? 48 : e instanceof Enemy3 ? 32 : e instanceof EnemyZ ? 48 : 24);
							part.height = (e instanceof EnemyX ? 48 : e instanceof Enemy3 ? 32 : e instanceof EnemyZ ? 48 : 24) + Math.random() * (e instanceof EnemyX ? 48 : e instanceof Enemy3 ? 32 : e instanceof EnemyZ ? 48 : 24);
							part.alpha = 0.8 + Math.random() * 0.2;
							var angle = Math.PI * 2 * (pi / particleCount) + Math.random() * 0.2;
							var speed = (e instanceof EnemyX ? 24 : e instanceof Enemy3 ? 16 : e instanceof EnemyZ ? 24 : 12) + Math.random() * (e instanceof EnemyX ? 16 : e instanceof Enemy3 ? 12 : e instanceof EnemyZ ? 16 : 8);
							var vx = Math.cos(angle) * speed;
							var vy = Math.sin(angle) * speed;
							part.life = (e instanceof EnemyX ? 32 : e instanceof Enemy3 ? 16 : e instanceof EnemyZ ? 32 : 10) + Math.floor(Math.random() * (e instanceof EnemyX ? 32 : e instanceof Enemy3 ? 16 : e instanceof EnemyZ ? 32 : 8));
							part.update = function () {
								this.x += vx;
								this.y += vy;
								this.life--;
								this.alpha *= 0.90 + Math.random() * 0.04;
								if (this.life <= 0) {
									this.destroy();
								}
							};
							game.addChild(part);
						}
						// 35% chance to drop a health potion when Enemy3 is killed (not for EnemyX/Enemy4/EnemyZ)
						if (e instanceof Enemy3 && Math.random() < 0.35) {
							var healthPotion = new HealthPotion();
							healthPotion.x = enemyToDestroy.x;
							healthPotion.y = enemyToDestroy.y;
							items.push(healthPotion);
							game.addChild(healthPotion);
						}
						enemyToDestroy.destroy();
						enemies.splice(j, 1);
						// If EnemyX was killed, drop 3 health potions and restart normal enemy spawning
						if (e instanceof EnemyX) {
							for (var hp = 0; hp < 3; hp++) {
								var healthPotion = new HealthPotion();
								// Spread potions horizontally a bit
								healthPotion.x = enemyToDestroy.x - 60 + 60 * hp;
								healthPotion.y = enemyToDestroy.y;
								items.push(healthPotion);
								game.addChild(healthPotion);
							}
							// --- In boss mode, alternate to EnemyZ after EnemyX dies
							if (typeof bossMode !== "undefined" && bossMode) {
								enemyXSpawned = false;
								enemyZSpawned = false; // Allow next boss to spawn (EnemyZ)
								spawnTick = 0;
								bossNextToSpawn = "Z"; // Always alternate to Z after X dies
								// Music continues
							} else {
								// Reset boss state and allow normal enemies to spawn again
								enemyXSpawned = false;
								bossMusicPlayed = false;
								// Stop boss music and play bgmusic when EnemyX is killed
								LK.stopMusic();
								if (musicOn) {
									LK.playMusic('bgmusic');
								}
								// If score >= 250, mark EnemyX as killed so it never spawns again (not in boss mode)
								if (score >= 250 && !(typeof bossMode !== "undefined" && bossMode)) {
									enemyXKilledAfter250 = true;
								}
								// Reset spawnTick so normal enemies start coming again, but slowly
								spawnTick = 0;
								// Reset spawnIntervalNormal to its original value when resuming normal enemy spawns
								spawnIntervalNormal = 60;
								// Optionally, set a delay before next normal spawn (e.g. 60 frames)
								// spawnTick = -60;
							}
						}
						// If EnemyZ was killed, alternate to EnemyX after Z dies (boss mode)
						if (e instanceof EnemyZ && typeof bossMode !== "undefined" && bossMode) {
							enemyZSpawned = false;
							spawnTick = 0;
							bossNextToSpawn = "X"; // Always alternate to X after Z dies
						}
					} else {
						// Flash for hit, but don't destroy
						LK.effects.flashObject(e, 0x8e24aa, 120);
					}
					b.destroy();
					heroBullets.splice(i, 1);
					break;
				} else {
					b.destroy();
					heroBullets.splice(i, 1);
					// Play death animation before destroying normal enemies
					var enemyToDestroy = e;
					// Particle animation for normal enemy death (more particles, richer effect)
					for (var pi = 0; pi < 16; pi++) {
						var part = LK.getAsset(enemyToDestroy instanceof Enemy1 ? 'enemy1' : 'enemy2', {
							anchorX: 0.5,
							anchorY: 0.5
						});
						part.x = enemyToDestroy.x;
						part.y = enemyToDestroy.y;
						part.width = 20 + Math.random() * 20;
						part.height = 20 + Math.random() * 20;
						part.alpha = 0.7 + Math.random() * 0.3;
						var angle = Math.PI * 2 * (pi / 16) + Math.random() * 0.2;
						var speed = 10 + Math.random() * 10;
						var vx = Math.cos(angle) * speed;
						var vy = Math.sin(angle) * speed;
						part.life = 10 + Math.floor(Math.random() * 10);
						part.update = function () {
							this.x += vx;
							this.y += vy;
							this.life--;
							this.alpha *= 0.88 + Math.random() * 0.06;
							if (this.life <= 0) {
								this.destroy();
							}
						};
						game.addChild(part);
					}
					enemyToDestroy.destroy();
					enemies.splice(j, 1);
					break;
				}
			}
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var e = enemies[i];
		if (typeof bossMode !== "undefined" && bossMode && e instanceof EnemyZ && e.hp <= 0) {
			enemyZSpawned = false;
			spawnTick = 0;
			bossNextToSpawn = "X"; // Always alternate to X after Z dies
		}
		e.update();
		// Remove if off screen
		if (e.y > 2732 + 100) {
			e.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Enemy shoots randomly
		if (Math.random() < 0.004 * speedMultiplier) {
			spawnEnemyBullet(e, hero.x, hero.y);
		}
		// Check collision with hero
		// Prevent hero from affecting or being affected by boss type enemies (EnemyX, EnemyZ)
		if (e instanceof EnemyX || e instanceof EnemyZ) {
			// Do nothing: hero does not affect or get hit by boss type enemies
			continue;
		}
		if (e.intersects(hero)) {
			if (godMode) {
				// In god mode, ignore all damage and just destroy enemy
				enemies[i].destroy();
				enemies.splice(i, 1);
				continue;
			}
			if (!shieldActive) {
				// Hero hit
				LK.getSound('heroHit').play();
				LK.effects.flashScreen(0xff0000, 800);
				heroHealth--;
				updateHealthBar();
				updateDemoHealthSquares && updateDemoHealthSquares();
				if (heroHealth <= 0) {
					// Save high score before game over
					if (scoreMode) {
						// Stop scoremode music and play gameover music when hero dies in score mode
						LK.stopMusic();
						if (musicOn) {
							LK.playMusic('Gameover');
						}
						// Show custom nickname prompt overlay
						showNicknamePrompt(function (nickname) {
							if (!nickname || typeof nickname !== "string" || nickname.trim().length === 0) {
								nickname = "Player";
							}
							saveHighScore(score, nickname.trim());
							LK.getSound('Death').play();
							LK.showGameOver();
						});
						return;
					} else {
						saveHighScore(score);
						LK.getSound('Death').play();
						LK.showGameOver();
						return;
					}
				}
				enemies[i].destroy();
				enemies.splice(i, 1);
				continue;
			} else {
				// Shield absorbs hit, destroy enemy
				LK.effects.flashObject(hero, 0x00ffff, 200);
				// Play death animation before destroying enemy killed by shield
				var enemyToDestroy = e;
				// Particle animation for shield kill (more particles, richer effect)
				for (var pi = 0; pi < 16; pi++) {
					var part = LK.getAsset(enemyToDestroy instanceof Enemy1 ? 'enemy1' : enemyToDestroy instanceof Enemy2 ? 'enemy2' : 'enemy3', {
						anchorX: 0.5,
						anchorY: 0.5
					});
					part.x = enemyToDestroy.x;
					part.y = enemyToDestroy.y;
					part.width = 20 + Math.random() * 20;
					part.height = 20 + Math.random() * 20;
					part.alpha = 0.7 + Math.random() * 0.3;
					var angle = Math.PI * 2 * (pi / 16) + Math.random() * 0.2;
					var speed = 10 + Math.random() * 10;
					var vx = Math.cos(angle) * speed;
					var vy = Math.sin(angle) * speed;
					part.life = 10 + Math.floor(Math.random() * 10);
					part.update = function () {
						this.x += vx;
						this.y += vy;
						this.life--;
						this.alpha *= 0.88 + Math.random() * 0.06;
						if (this.life <= 0) {
							this.destroy();
						}
					};
					game.addChild(part);
				}
				enemyToDestroy.destroy();
				enemies.splice(i, 1);
				continue;
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var b = enemyBullets[i];
		if (typeof bossMode !== "undefined" && bossMode && b instanceof EnemyBullet) {
			// Check if this bullet killed EnemyZ (shouldn't happen, but for completeness)
			for (var j = enemies.length - 1; j >= 0; j--) {
				var e = enemies[j];
				if (e instanceof EnemyZ && e.hp <= 0) {
					enemyZSpawned = false;
					spawnTick = 0;
					bossNextToSpawn = "X"; // Always alternate to X after Z dies
				}
			}
		}
		b.update();
		// Handle explosive bullets
		if (b.isExplosive && !b.hasExploded) {
			b.explosionTimer -= speedMultiplier;
			// Flash bullet red as it gets closer to exploding
			if (b.explosionTimer <= 6) {
				b.children[0].tint = 0xff0000;
			}
			// Explode when timer reaches 0 (0.2 seconds = 12 ticks at 60fps)
			if (b.explosionTimer <= 0) {
				b.hasExploded = true;
				// Create explosion visual effect
				var explosionEffect = LK.getAsset('enemyBullet', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: b.x,
					y: b.y,
					width: 100,
					height: 100,
					tint: 0xff8800
				});
				explosionEffect.alpha = 0.8;
				game.addChild(explosionEffect);
				// Animate explosion with tween
				tween(explosionEffect, {
					width: 400,
					height: 400,
					alpha: 0
				}, {
					duration: 800,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						explosionEffect.destroy();
					}
				});
				// Create 6 normal bullets flying in different directions
				for (var bulletIndex = 0; bulletIndex < 6; bulletIndex++) {
					var normalBullet = new EnemyBullet();
					normalBullet.x = b.x;
					normalBullet.y = b.y;
					// Calculate angle for 6 directions (60 degrees apart)
					var angle = bulletIndex * Math.PI * 2 / 6;
					var speed = 15;
					normalBullet.speedX = Math.cos(angle) * speed;
					normalBullet.speedY = Math.sin(angle) * speed;
					enemyBullets.push(normalBullet);
					game.addChild(normalBullet);
				}
				// Area damage to hero (reduced from original)
				var dx = hero.x - b.x;
				var dy = hero.y - b.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance <= b.explosionRadius) {
					if (!godMode && !shieldActive) {
						LK.getSound('heroHit').play();
						LK.effects.flashScreen(0xff0000, 800);
						heroHealth -= 1; // Reduced damage since bullets are now additional threat
						if (heroHealth < 0) {
							heroHealth = 0;
						}
						updateHealthBar();
						updateDemoHealthSquares && updateDemoHealthSquares();
						if (heroHealth <= 0) {
							// Save high score before game over
							if (scoreMode) {
								// Show custom nickname prompt overlay
								showNicknamePrompt(function (nickname) {
									if (!nickname || typeof nickname !== "string" || nickname.trim().length === 0) {
										nickname = "Player";
									}
									saveHighScore(score, nickname.trim());
									LK.getSound('Death').play();
									LK.showGameOver();
								});
								return;
							} else {
								saveHighScore(score);
								LK.getSound('Death').play();
								LK.showGameOver();
								return;
							}
						}
					} else if (shieldActive) {
						LK.effects.flashObject(hero, 0x00ffff, 200);
					}
				}
				// Remove explosive bullet after explosion
				b.destroy();
				enemyBullets.splice(i, 1);
				continue;
			}
		}
		// Remove if off screen
		if (b.y < -60 || b.y > 2732 + 60 || b.x < -60 || b.x > 2048 + 60) {
			b.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check collision with hero
		if (b.intersects(hero)) {
			if (godMode) {
				// In god mode, ignore all damage and just destroy bullet
				b.destroy();
				enemyBullets.splice(i, 1);
				continue;
			}
			if (!shieldActive) {
				LK.getSound('heroHit').play();
				LK.effects.flashScreen(0xff0000, 800);
				heroHealth--;
				updateHealthBar();
				updateDemoHealthSquares && updateDemoHealthSquares();
				if (heroHealth <= 0) {
					// Save high score before game over
					if (scoreMode) {
						// Show custom nickname prompt overlay
						showNicknamePrompt(function (nickname) {
							if (!nickname || typeof nickname !== "string" || nickname.trim().length === 0) {
								nickname = "Player";
							}
							saveHighScore(score, nickname.trim());
							LK.getSound('Death').play();
							LK.showGameOver();
						});
						return;
					} else {
						saveHighScore(score);
						LK.getSound('Death').play();
						LK.showGameOver();
						return;
					}
				}
				b.destroy();
				enemyBullets.splice(i, 1);
				continue;
			} else {
				// Shield absorbs bullet
				LK.effects.flashObject(hero, 0x00ffff, 120);
				b.destroy();
				enemyBullets.splice(i, 1);
				continue;
			}
		}
	}
	// --- ENEMY SPAWN RATE BOOST LOGIC ---
	if (typeof spawnRateBoostActive === "undefined") {
		var spawnRateBoostActive = false;
		var spawnRateBoostTimer = 0;
		var nextBoostScore = 50;
		var spawnIntervalNormal = 60;
		var spawnIntervalBoost = 30;
	}
	// Score mode: all enemy types, no bosses, gets harder by score
	if (typeof scoreMode !== "undefined" && scoreMode) {
		spawnTick += speedMultiplier;
		// Check if we reached a new boost score (50, 150, 250, ...) and trigger boost
		if (score >= nextBoostScore && !spawnRateBoostActive) {
			spawnRateBoostActive = true;
			spawnRateBoostTimer = 180; // 3 seconds at 60fps
			// After 50, next is 150, then 250, 350, ...
			if (nextBoostScore === 50) {
				nextBoostScore = 150;
			} else {
				nextBoostScore += 100;
			}
		}
		// Handle boost timer
		if (spawnRateBoostActive) {
			spawnRateBoostTimer -= speedMultiplier;
			if (spawnRateBoostTimer <= 0) {
				spawnRateBoostActive = false;
			}
		}
		// Calculate spawn interval based on score
		var baseInterval = spawnRateBoostActive ? spawnIntervalBoost : Math.max(18, spawnIntervalNormal - Math.floor(score / 20) * 2);
		var spawnInterval = score >= 600 ? Math.max(12, baseInterval - Math.floor((score - 600) / 30) * 2) : baseInterval;
		if (spawnTick >= spawnInterval) {
			// Calculate how many enemies to spawn based on score (1 + 1 per 50 score)
			var numEnemies = 1 + Math.floor(score / 50);
			for (var i = 0; i < numEnemies; i++) {
				spawnEnemy();
			}
			// 1 in 8 chance to spawn an item
			if (Math.random() < 0.125) {
				spawnItem();
			}
			spawnTick = 0;
		}
	}
	// Boss mode: alternate EnemyX and EnemyZ, never normal enemies or items
	else if (typeof bossMode !== "undefined" && bossMode) {
		spawnTick += speedMultiplier;
		// Track which boss to spawn next: "X" or "Z"
		if (typeof bossNextToSpawn === "undefined") {
			bossNextToSpawn = "X";
		}
		if (!enemyXSpawned && !enemyZSpawned && spawnTick >= 30) {
			var enemy;
			// Special case: at score 451, always spawn EnemyZ regardless of alternation
			if (score === 451) {
				enemy = new EnemyZ();
				enemy.x = 2048 / 2;
				enemy.y = -80;
				enemies.push(enemy);
				game.addChild(enemy);
				enemyZSpawned = true;
				bossNextToSpawn = "X"; // After Z, alternate to X
				spawnTick = 0;
			} else if (bossNextToSpawn === "X") {
				enemy = new EnemyX();
				enemy.x = 200 + Math.random() * (2048 - 400);
				enemy.y = -80;
				enemies.push(enemy);
				game.addChild(enemy);
				enemyXSpawned = true;
				// Do not alternate bossNextToSpawn here; alternate only on death
				spawnTick = 0;
			} else if (bossNextToSpawn === "Z") {
				enemy = new EnemyZ();
				enemy.x = 2048 / 2;
				enemy.y = -80;
				enemies.push(enemy);
				game.addChild(enemy);
				enemyZSpawned = true;
				// Do not alternate bossNextToSpawn here; alternate only on death
				spawnTick = 0;
			}
		}
		// Never spawn items or normal enemies in boss mode
	} else {
		// Check if we reached a new boost score (50, 150, 250, ...) and trigger boost
		if (score >= nextBoostScore && !spawnRateBoostActive) {
			spawnRateBoostActive = true;
			spawnRateBoostTimer = 180; // 3 seconds at 60fps
			// After 50, next is 150, then 250, 350, ...
			if (nextBoostScore === 50) {
				nextBoostScore = 150;
			} else {
				nextBoostScore += 100;
			}
		}
		// Handle boost timer
		if (spawnRateBoostActive) {
			spawnRateBoostTimer -= speedMultiplier;
			if (spawnRateBoostTimer <= 0) {
				spawnRateBoostActive = false;
			}
		}
		// Spawn enemies
		spawnTick += speedMultiplier;
		// Use boosted or normal interval
		// Make spawn rate scale more slowly with score (easier): decrease by 2 per 20 score, not 4 per 10
		// After 600 score, apply additional spawn rate increase
		var baseInterval = spawnRateBoostActive ? spawnIntervalBoost : Math.max(18, spawnIntervalNormal - Math.floor(score / 20) * 2);
		var spawnInterval = score >= 600 ? Math.max(12, baseInterval - Math.floor((score - 600) / 30) * 2) : baseInterval;
		if (score < 250) {
			if (spawnTick >= spawnInterval) {
				// Calculate how many enemies to spawn based on score (1 + 1 per 50 score)
				var numEnemies = 1 + Math.floor(score / 50);
				for (var i = 0; i < numEnemies; i++) {
					spawnEnemy();
				}
				// 1 in 8 chance to spawn an item
				if (Math.random() < 0.125) {
					spawnItem();
				}
				spawnTick = 0;
			}
		} else if (score >= 250) {
			// Stop current music and play boss music when score passes 250
			if (typeof bossMusicPlayed === "undefined") {
				var bossMusicPlayed = false;
			}
			if (!enemyXKilledAfter250) {
				// --- Ensure EnemyX spawns immediately after passing 250 score before any other enemies ---
				if (!enemyXSpawned) {
					// Only spawn EnemyX if not already present
					var enemy = new EnemyX();
					enemy.x = 200 + Math.random() * (2048 - 400);
					enemy.y = -80;
					enemies.push(enemy);
					game.addChild(enemy);
					enemyXSpawned = true;
					// Stop current music and play boss music when EnemyX spawns
					if (!bossMusicPlayed) {
						LK.stopMusic();
						if (musicOn) {
							LK.playMusic('Boss');
						}
						bossMusicPlayed = true;
					}
					spawnTick = 0;
				}
				// Do NOT spawn any other enemies or items until EnemyX is killed
				else {
					// Wait until EnemyX is killed before resuming normal spawns
					// (do nothing here)
				}
			} else {
				// EnemyX has been killed after 250 score, resume normal enemy and item spawns
				spawnTick++;
				// After score reaches 600, start to increase enemy spawn speed significantly
				var postBossSpawnInterval = 60;
				if (score >= 600) {
					// Decrease interval by 2 every 30 score above 600, minimum 12 (much faster spawn rate)
					postBossSpawnInterval = Math.max(12, 60 - Math.floor((score - 600) / 30) * 2);
				}
				// Always spawn exactly 1 enemy per postBossSpawnInterval ticks after EnemyX is killed post-250
				if (score < 800 && spawnTick >= postBossSpawnInterval) {
					spawnEnemy();
					// 1 in 8 chance to spawn an item
					if (Math.random() < 0.125) {
						spawnItem();
					}
					spawnTick = 0;
				} else if (score === 800 && !enemyZSpawned) {
					// Spawn EnemyZ at score 800
					var enemy = new EnemyZ();
					enemy.x = 2048 / 2;
					enemy.y = -80;
					enemies.push(enemy);
					game.addChild(enemy);
					enemyZSpawned = true;
					// Optionally play boss music if not already playing
					if (typeof bossMusicPlayed === "undefined" || !bossMusicPlayed) {
						LK.stopMusic();
						if (musicOn) {
							LK.playMusic('Boss');
						}
						bossMusicPlayed = true;
					}
					spawnTick = 0;
				}
			}
			// In god mode, also allow enemies to spawn after EnemyX is killed, just like normal mode
			if (godMode && enemyXKilledAfter250) {
				spawnTick++;
				var postBossSpawnInterval = 60;
				if (score >= 600) {
					// Use same aggressive spawn rate increase as normal mode
					postBossSpawnInterval = Math.max(12, 60 - Math.floor((score - 600) / 30) * 2);
				}
				if (score < 800 && spawnTick >= postBossSpawnInterval) {
					spawnEnemy();
					if (Math.random() < 0.125) {
						spawnItem();
					}
					spawnTick = 0;
				}
			}
			// In god mode, also apply increased spawn rate for pre-250 score enemies after 600 score
			if (godMode && score < 250 && score >= 600) {
				// Apply same spawn rate boost logic as normal mode for pre-250 enemies
				var baseInterval = spawnRateBoostActive ? spawnIntervalBoost : Math.max(18, spawnIntervalNormal - Math.floor(score / 20) * 2);
				var spawnInterval = Math.max(12, baseInterval - Math.floor((score - 600) / 30) * 2);
				if (spawnTick >= spawnInterval) {
					// Calculate how many enemies to spawn based on score (1 + 1 per 50 score)
					var numEnemies = 1 + Math.floor(score / 50);
					for (var i = 0; i < numEnemies; i++) {
						spawnEnemy();
					}
					// 1 in 8 chance to spawn an item
					if (Math.random() < 0.125) {
						spawnItem();
					}
					spawnTick = 0;
				}
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -1855,8 +1855,9 @@
 function spawnEnemy() {
 	// 10% Enemy4 (now allowed in score mode at any score), 20% Enemy3, 35% Enemy1, 35% Enemy2
 	var rand = Math.random();
 	var enemy;
+	// Always allow Enemy4 to spawn from score 0 in score mode (10% chance)
 	if (rand < 0.35) {
 		enemy = new Enemy1();
 		enemy.x = 200 + Math.random() * (2048 - 400);
 		enemy.y = -80;
@@ -1870,9 +1871,9 @@
 		enemy = new Enemy3();
 		enemy.x = 200 + Math.random() * (2048 - 400);
 		enemy.y = -80;
 	} else {
-		// Always allow Enemy4 to spawn (in all modes, including score mode, at any score)
+		// Enemy4 can spawn at any score, including score mode from 0
 		enemy = new Enemy4();
 		enemy.x = 200 + Math.random() * (2048 - 400);
 		enemy.y = -80;
 	}