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

/**** 
* Classes
****/ 
var BossBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	bulletGraphics.tint = 0xff6600;
	self.speed = 4;
	self.update = function () {
		// Track player position for homing behavior (boss bullets only)
		if (player) {
			var dx = player.x - self.x;
			var dy = player.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				self.x += dx / distance * self.speed * 0.3;
				self.y += dy / distance * self.speed + self.speed * 0.7;
			} else {
				self.y += self.speed;
			}
		} else {
			self.y += self.speed;
		}
	};
	return self;
});
var BossEnemy = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1;
	self.health = 49;
	self.shootTimer = 0;
	self.update = function () {
		self.y += self.speed;
		self.shootTimer++;
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	bulletGraphics.tint = 0xff0000;
	self.speed = 4;
	self.update = function () {
		// Regular enemy bullets move straight down
		self.y += self.speed;
	};
	return self;
});
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PlayerShip = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.type = 'speed'; // speed, fireRate, or coins
	self.update = function () {
		self.y += self.speed;
		self.rotation += 0.1;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000011
});

/**** 
* Game Code
****/ 
var player = game.addChild(new PlayerShip());
player.x = 1024;
player.y = 2000;
tween(player, {
	scaleX: 1.2,
	scaleY: 1.2
}, {
	duration: 800,
	easing: tween.easeInOut,
	onFinish: function onFinish() {
		tween(player, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 800,
			easing: tween.easeInOut
		});
	}
});
var playerBullets = [];
var enemies = [];
var bulletTimer = 0;
var enemySpawnTimer = 0;
var enemySpawnRate = 120;
var dragNode = null;
var upgradeLevel = storage.upgradeLevel || 1;
var coins = storage.coins || 0;
var powerUpTimer = 0;
var powerUps = [];
var difficulty = null; // Always start with no difficulty to force selection
var gameStarted = false;
var playerFireMode = 1; // 1 = single, 2 = double, 3 = triple
var enemyHealth = {}; // Track enemy health by difficulty
var bossEnemies = [];
var enemyBullets = [];
var bossBullets = [];
var bossSpawned = false;
// Unlimited bullets - removed bullet limitation system
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 50;
// Difficulty selection UI
var difficultyTitle = new Text2('Select Difficulty', {
	size: 100,
	fill: 0xFFFFFF
});
difficultyTitle.anchor.set(0.5, 0.5);
difficultyTitle.x = 1024;
difficultyTitle.y = 800;
var easyBtn = new Text2('EASY', {
	size: 80,
	fill: 0x00FF00
});
easyBtn.anchor.set(0.5, 0.5);
easyBtn.x = 1024;
easyBtn.y = 1100;
var mediumBtn = new Text2('MEDIUM', {
	size: 80,
	fill: 0xFFFF00
});
mediumBtn.anchor.set(0.5, 0.5);
mediumBtn.x = 1024;
mediumBtn.y = 1300;
var hardBtn = new Text2('HARD', {
	size: 80,
	fill: 0xFF0000
});
hardBtn.anchor.set(0.5, 0.5);
hardBtn.x = 1024;
hardBtn.y = 1500;
// Always show difficulty buttons at game start
game.addChild(difficultyTitle);
game.addChild(easyBtn);
game.addChild(mediumBtn);
game.addChild(hardBtn);
gameStarted = false;
function startGame(selectedDifficulty) {
	difficulty = selectedDifficulty;
	storage.difficulty = difficulty;
	gameStarted = true;
	// Remove difficulty UI
	if (difficultyTitle.parent) difficultyTitle.destroy();
	if (easyBtn.parent) easyBtn.destroy();
	if (mediumBtn.parent) mediumBtn.destroy();
	if (hardBtn.parent) hardBtn.destroy();
	// Set difficulty parameters
	if (difficulty === 'easy') {
		enemySpawnRate = 150;
	} else if (difficulty === 'medium') {
		enemySpawnRate = 100;
	} else if (difficulty === 'hard') {
		enemySpawnRate = 80;
		bossSpawned = false;
	}
}
var highScore = storage.highScore || 0;
var highScoreTxt = new Text2('High: ' + highScore, {
	size: 80,
	fill: 0xFFFF00
});
highScoreTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(highScoreTxt);
highScoreTxt.x = -20;
highScoreTxt.y = 50;
// Removed bullet count and reload UI - unlimited bullets
function handleMove(x, y, obj) {
	if (dragNode) {
		// Allow free movement within screen bounds
		var targetX = x;
		var targetY = y;
		if (targetX < 60) targetX = 60;
		if (targetX > 1988) targetX = 1988;
		if (targetY < 100) targetY = 100;
		if (targetY > 2600) targetY = 2600;
		// Direct movement without tweening for immediate response
		dragNode.x = targetX;
		dragNode.y = targetY;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	if (!gameStarted) {
		// Check difficulty button clicks using direct x,y coordinates
		if (x > 824 && x < 1224) {
			if (y > 1050 && y < 1150) {
				startGame('easy');
				return;
			} else if (y > 1250 && y < 1350) {
				startGame('medium');
				return;
			} else if (y > 1450 && y < 1550) {
				startGame('hard');
				return;
			}
		}
	} else {
		dragNode = player;
		handleMove(x, y, obj);
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.update = function () {
	bulletTimer++;
	enemySpawnTimer++;
	powerUpTimer++;
	// Unlimited bullets - removed reload handling
	// Spawn player bullets with upgrade-based fire rate (only if game started)
	if (gameStarted) {
		var fireRate = Math.max(8, 15 - upgradeLevel * 2);
		if (bulletTimer >= fireRate) {
			if (playerFireMode === 1) {
				// Single bullet
				var newBullet = new PlayerBullet();
				newBullet.x = player.x;
				newBullet.y = player.y - 40;
				newBullet.lastY = newBullet.y;
				playerBullets.push(newBullet);
				game.addChild(newBullet);
			} else if (playerFireMode === 2) {
				// Double bullets
				for (var bi = 0; bi < 2; bi++) {
					var newBullet = new PlayerBullet();
					newBullet.x = player.x + (bi === 0 ? -30 : 30);
					newBullet.y = player.y - 40;
					newBullet.lastY = newBullet.y;
					playerBullets.push(newBullet);
					game.addChild(newBullet);
				}
			} else if (playerFireMode === 3) {
				// Triple bullets
				for (var bi = 0; bi < 3; bi++) {
					var newBullet = new PlayerBullet();
					newBullet.x = player.x + (bi === 0 ? -40 : bi === 1 ? 0 : 40);
					newBullet.y = player.y - 40;
					newBullet.lastY = newBullet.y;
					playerBullets.push(newBullet);
					game.addChild(newBullet);
				}
			}
			LK.getSound('shoot').play();
			bulletTimer = 0;
		}
	}
	// Spawn power-ups occasionally
	if (powerUpTimer >= 600) {
		var newPowerUp = new PowerUp();
		newPowerUp.x = Math.random() * 1800 + 124;
		newPowerUp.y = -30;
		newPowerUp.lastY = newPowerUp.y;
		var powerUpTypes = ['speed', 'fireRate', 'coins'];
		newPowerUp.type = powerUpTypes[Math.floor(Math.random() * powerUpTypes.length)];
		if (newPowerUp.type === 'coins') {
			tween(newPowerUp, {
				tint: 0xffd700
			}, {
				duration: 0
			});
		} else if (newPowerUp.type === 'fireRate') {
			tween(newPowerUp, {
				tint: 0xff6600
			}, {
				duration: 0
			});
		}
		powerUps.push(newPowerUp);
		game.addChild(newPowerUp);
		powerUpTimer = 0;
	}
	// Spawn boss enemy for hard difficulty after score 100
	if (gameStarted && difficulty === 'hard' && LK.getScore() >= 100 && !bossSpawned) {
		var newBoss = new BossEnemy();
		newBoss.x = 1024;
		newBoss.y = -100;
		newBoss.lastY = newBoss.y;
		newBoss.lastIntersectingPlayer = false;
		newBoss.scaleX = 2;
		newBoss.scaleY = 2;
		newBoss.alpha = 0.8;
		newBoss.tint = 0xff6600;
		enemyHealth[bossEnemies.length] = 49;
		newBoss.enemyId = bossEnemies.length;
		bossEnemies.push(newBoss);
		game.addChild(newBoss);
		bossSpawned = true;
	}
	// Spawn enemies (only if game started)
	if (gameStarted && enemySpawnTimer >= enemySpawnRate) {
		var newEnemy = new EnemyShip();
		newEnemy.x = Math.random() * 1800 + 124;
		newEnemy.y = -30;
		newEnemy.lastY = newEnemy.y;
		newEnemy.lastIntersectingPlayer = false;
		newEnemy.scaleX = 0.5;
		newEnemy.scaleY = 0.5;
		newEnemy.alpha = 0.7;
		// Set enemy health and speed based on difficulty
		if (difficulty === 'easy') {
			newEnemy.health = 1;
			newEnemy.speed = 2;
		} else if (difficulty === 'medium') {
			newEnemy.health = 2;
			newEnemy.speed = 3;
		} else if (difficulty === 'hard') {
			newEnemy.health = 5;
			newEnemy.speed = 5;
			newEnemy.canShoot = true;
			newEnemy.shootTimer = Math.random() * 30;
		}
		enemyHealth[newEnemy.id || enemies.length] = newEnemy.health;
		newEnemy.enemyId = newEnemy.id || enemies.length;
		tween(newEnemy, {
			scaleX: 1,
			scaleY: 1,
			alpha: 1
		}, {
			duration: 400,
			easing: tween.easeOut
		});
		enemies.push(newEnemy);
		game.addChild(newEnemy);
		enemySpawnTimer = 0;
		if (enemySpawnRate > 15) {
			enemySpawnRate -= 1;
		}
	}
	// Enemy shooting logic for hard difficulty
	if (gameStarted && difficulty === 'hard') {
		// Regular enemies shoot
		for (var ei = 0; ei < enemies.length; ei++) {
			var enemy = enemies[ei];
			if (enemy.canShoot) {
				enemy.shootTimer++;
				if (enemy.shootTimer >= 40) {
					var enemyBullet = new EnemyBullet();
					enemyBullet.x = enemy.x;
					enemyBullet.y = enemy.y + 30;
					enemyBullet.lastY = enemyBullet.y;
					enemyBullets.push(enemyBullet);
					game.addChild(enemyBullet);
					enemy.shootTimer = 0;
				}
			}
		}
		// Boss enemies shoot every 60 ticks (1 second)
		for (var bi = 0; bi < bossEnemies.length; bi++) {
			var boss = bossEnemies[bi];
			boss.shootTimer++;
			if (boss.shootTimer >= 60) {
				var bossBullet = new BossBullet();
				bossBullet.x = boss.x;
				bossBullet.y = boss.y + 50;
				bossBullet.lastY = bossBullet.y;
				bossBullets.push(bossBullet);
				game.addChild(bossBullet);
				boss.shootTimer = 0;
			}
		}
	}
	// Update and check power-ups
	for (var p = powerUps.length - 1; p >= 0; p--) {
		var powerUp = powerUps[p];
		if (powerUp.lastY === undefined) powerUp.lastY = powerUp.y;
		// Remove power-ups that go off screen
		if (powerUp.lastY <= 2800 && powerUp.y > 2800) {
			powerUp.destroy();
			powerUps.splice(p, 1);
			continue;
		}
		// Check power-up collection
		if (powerUp.intersects(player)) {
			LK.getSound('powerup').play();
			if (powerUp.type === 'coins') {
				coins += 5;
				storage.coins = coins;
			} else if (powerUp.type === 'fireRate' && upgradeLevel < 5) {
				upgradeLevel++;
				storage.upgradeLevel = upgradeLevel;
			} else if (powerUp.type === 'speed') {
				// Green circle - upgrade fire mode
				if (playerFireMode < 3) {
					playerFireMode++;
				}
				tween(player, {
					tint: 0x00ff00
				}, {
					duration: 200,
					onFinish: function onFinish() {
						tween(player, {
							tint: 0xffffff
						}, {
							duration: 200
						});
					}
				});
			}
			tween(powerUp, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					powerUp.destroy();
				}
			});
			powerUps.splice(p, 1);
			continue;
		}
		powerUp.lastY = powerUp.y;
	}
	// Update and check player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
		// Remove bullets that go off screen
		if (bullet.lastY >= -10 && bullet.y < -10) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check bullet-boss collisions first
		var hitEnemy = false;
		for (var bj = bossEnemies.length - 1; bj >= 0; bj--) {
			var boss = bossEnemies[bj];
			if (bullet.intersects(boss)) {
				var bossId = boss.enemyId;
				if (enemyHealth[bossId] === undefined) {
					enemyHealth[bossId] = 49;
				}
				// Reduce boss health
				enemyHealth[bossId]--;
				// Flash boss when hit
				LK.effects.flashObject(boss, 0xff0000, 100);
				if (enemyHealth[bossId] <= 0) {
					// Boss destroyed
					var points = 500;
					LK.setScore(LK.getScore() + points);
					scoreTxt.setText(LK.getScore());
					// Update high score
					if (LK.getScore() > highScore) {
						highScore = LK.getScore();
						storage.highScore = highScore;
						highScoreTxt.setText('High: ' + highScore);
						tween(highScoreTxt, {
							tint: 0x00ff00
						}, {
							duration: 300,
							onFinish: function onFinish() {
								tween(highScoreTxt, {
									tint: 0xffff00
								}, {
									duration: 300
								});
							}
						});
					}
					LK.getSound('explosion').play();
					tween(boss, {
						scaleX: 4,
						scaleY: 4,
						alpha: 0
					}, {
						duration: 500,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							boss.destroy();
						}
					});
					bossEnemies.splice(bj, 1);
					delete enemyHealth[bossId];
					bossSpawned = false; // Allow new boss to spawn
				}
				bullet.destroy();
				playerBullets.splice(i, 1);
				hitEnemy = true;
				break;
			}
		}
		// Check bullet-enemy collisions
		if (!hitEnemy) {
			for (var j = enemies.length - 1; j >= 0; j--) {
				var enemy = enemies[j];
				if (bullet.intersects(enemy)) {
					var enemyId = enemy.enemyId;
					if (enemyHealth[enemyId] === undefined) {
						enemyHealth[enemyId] = enemy.health || 1;
					}
					// Reduce enemy health
					enemyHealth[enemyId]--;
					// Flash enemy when hit
					LK.effects.flashObject(enemy, 0xff0000, 100);
					if (enemyHealth[enemyId] <= 0) {
						// Enemy destroyed
						var points = 10 + upgradeLevel * 5;
						LK.setScore(LK.getScore() + points);
						scoreTxt.setText(LK.getScore());
						// Update high score
						if (LK.getScore() > highScore) {
							highScore = LK.getScore();
							storage.highScore = highScore;
							highScoreTxt.setText('High: ' + highScore);
							tween(highScoreTxt, {
								tint: 0x00ff00
							}, {
								duration: 300,
								onFinish: function onFinish() {
									tween(highScoreTxt, {
										tint: 0xffff00
									}, {
										duration: 300
									});
								}
							});
						}
						LK.getSound('explosion').play();
						tween(enemy, {
							scaleX: 2,
							scaleY: 2,
							alpha: 0
						}, {
							duration: 300,
							easing: tween.easeOut,
							onFinish: function onFinish() {
								enemy.destroy();
							}
						});
						enemies.splice(j, 1);
						delete enemyHealth[enemyId];
					}
					bullet.destroy();
					playerBullets.splice(i, 1);
					hitEnemy = true;
					break;
				}
			}
		}
		if (hitEnemy) continue;
		bullet.lastY = bullet.y;
	}
	// Update and check boss enemies
	for (var b = bossEnemies.length - 1; b >= 0; b--) {
		var boss = bossEnemies[b];
		if (boss.lastY === undefined) boss.lastY = boss.y;
		if (boss.lastIntersectingPlayer === undefined) boss.lastIntersectingPlayer = false;
		// Remove boss that goes off screen
		if (boss.lastY <= 2800 && boss.y > 2800) {
			boss.destroy();
			bossEnemies.splice(b, 1);
			continue;
		}
		// Check boss-player collision
		var currentIntersecting = boss.intersects(player);
		if (!boss.lastIntersectingPlayer && currentIntersecting) {
			LK.effects.flashScreen(0xff0000, 1000);
			storage.difficulty = null;
			difficulty = null;
			gameStarted = false;
			LK.showGameOver();
			return;
		}
		boss.lastY = boss.y;
		boss.lastIntersectingPlayer = currentIntersecting;
	}
	// Update and check enemy bullets
	for (var eb = enemyBullets.length - 1; eb >= 0; eb--) {
		var enemyBullet = enemyBullets[eb];
		if (enemyBullet.lastY === undefined) enemyBullet.lastY = enemyBullet.y;
		// Remove enemy bullets that go off screen
		if (enemyBullet.lastY <= 2800 && enemyBullet.y > 2800) {
			enemyBullet.destroy();
			enemyBullets.splice(eb, 1);
			continue;
		}
		// Check enemy bullet-player collision
		if (enemyBullet.intersects(player)) {
			LK.effects.flashScreen(0xff0000, 1000);
			storage.difficulty = null;
			difficulty = null;
			gameStarted = false;
			LK.showGameOver();
			return;
		}
		enemyBullet.lastY = enemyBullet.y;
	}
	// Update and check boss bullets
	for (var bb = bossBullets.length - 1; bb >= 0; bb--) {
		var bossBullet = bossBullets[bb];
		if (bossBullet.lastY === undefined) bossBullet.lastY = bossBullet.y;
		// Remove boss bullets that go off screen
		if (bossBullet.lastY <= 2800 && bossBullet.y > 2800) {
			bossBullet.destroy();
			bossBullets.splice(bb, 1);
			continue;
		}
		// Check boss bullet-player collision
		if (bossBullet.intersects(player)) {
			LK.effects.flashScreen(0xff0000, 1000);
			storage.difficulty = null;
			difficulty = null;
			gameStarted = false;
			LK.showGameOver();
			return;
		}
		bossBullet.lastY = bossBullet.y;
	}
	// Update and check enemies
	for (var k = enemies.length - 1; k >= 0; k--) {
		var enemy = enemies[k];
		if (enemy.lastY === undefined) enemy.lastY = enemy.y;
		if (enemy.lastIntersectingPlayer === undefined) enemy.lastIntersectingPlayer = false;
		// Remove enemies that go off screen
		if (enemy.lastY <= 2800 && enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(k, 1);
			continue;
		}
		// Check enemy-player collision
		var currentIntersecting = enemy.intersects(player);
		if (!enemy.lastIntersectingPlayer && currentIntersecting) {
			LK.effects.flashScreen(0xff0000, 1000);
			// Clear difficulty selection to force player to choose again
			storage.difficulty = null;
			difficulty = null;
			gameStarted = false;
			LK.showGameOver();
			return;
		}
		enemy.lastY = enemy.y;
		enemy.lastIntersectingPlayer = currentIntersecting;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -213,9 +213,9 @@
 		enemySpawnRate = 150;
 	} else if (difficulty === 'medium') {
 		enemySpawnRate = 100;
 	} else if (difficulty === 'hard') {
-		enemySpawnRate = 30;
+		enemySpawnRate = 80;
 		bossSpawned = false;
 	}
 }
 var highScore = storage.highScore || 0;